I. Overview: Because traditional LED display input only through the data lines directly connected to the computer, so the traditional LED display for the remote information can not meet the needs of real-time, therefore, unable to build a large-scale networked information LED screen system. Fu Ka-yan from Beijing Science and Technology Co., Ltd. to develop the LED information release system can effectively resolve the LED display remote network problems. The system is based on GPRS / CDMA wireless network technology to provide universal LED communications control interface, to achieve large-scale LED display network. Whether ordinary article text screen, or large-screen graphic screen, as long as the LED connected to wireless transmission terminals, will be able to immediately break the traditional LED display limitations, to become a large-scale wireless networking LED information display. Wireless LED information display is a new information media, once available, it is widely accepted by social groups, and its "floating" display information dissemination and networking features of the more highly regarded by the advertising industry has become a brand-new advertising media. No matter where on the LED display, LED display the number, the system's control center will be able to information accurate, real-time release to the designated one or more or all of the LED screen. Wireless LED information release system can greatly enhance the LED display as an information carrier released information shows that the flexibility and real-time, in order to expand the application of LED screens to play great effect.
Second, wireless LED information release system features: (1) large-scale network: traditional LED display content from a computer through the serial data lines to send, display the number of restrictions in terms of scale received. Wireless LED information release system, through GPRS \ CDMA wireless networks to send messages using TCP network transmission protocol, terminal network can be as many as tens of thousands across an unlimited number. (2) real-time dissemination of information: the traditional fixed-LED screen can only display the information stored within the controller, for release of new information only through the computer to update information online. Wireless LED display can receive information center issued information. (3) from the distance restrictions: traditional electronic display only a short distance use, generally only tens, wireless LED display across the country, as long as the GPRS wireless network coverage area can use, free from distance and location restrictions. (4) to facilitate installation and maintenance: As no need for the laying of fiber optic cable or communication cables, so wireless LED display is easy to choose the installation location. Modular product design, ease of maintenance and overhaul.
Third, the wireless LED information release system design principles: (1) nature: full use of the computer Internet, mobile wireless communications systems, LED display control, such as advanced technology, the design of advanced wireless LED information release system. The use of advanced system software platform and terminal equipment, wireless LED will not only release information networking needs, and can support all industry-related specific business needs. (2) reliability: As the wireless LED information release system uses the special nature of the environment, must ensure that the system is relatively stable and reliable. The reliability of the system is mainly embodied in three aspects: First, Center for system reliability, the reliability of the system including hardware, operating system, databases, services such as software platform system reliability; Second, wireless LED display terminal reliability , and mainly refers to vehicle wireless LED display terminal can be stable and reliable work, the low rate of hardware failure. Third, a reliable communication mechanism, because the use of wireless network communication environment characterized by its complexity, the system communication mechanism must be highly efficient and reliable data protection. (3) scalability: The system should have a good scalability, when the terminal increase in the number of users to extend the scope of use, increased system functionality, is a smooth upgrade, the protection of investment. At present, wireless LED information release system can support various types of existing wireless access, GSM communication system, GPRS communication system, CDMA communication system, and implemented these systems and network operations, the future through the development and installation of the corresponding communication interface agreement to achieve other future communication system access.
(4) practicality: the operation of the entire system to facilitate simple and efficient as the goal, not only fully reflects the characteristics of rapid reaction, but also easy to handle personnel and dissemination of information processing for management to keep abreast of the statistical information. (5) Confidentiality: For the system management strict rights management, only a certain amount of keys to access permissions, monitoring, implementation of appropriate management and control operation, to ensure that the system is safe and reliable. Fourth, wireless LED information release system, the main functions of functions: 1. System maximum support wireless LED display is greater than the number of 10,000; 2. Communications system to support: GPRS communication, CDMA communications; 3. System software using B / S structure; 4. LED display equipment to support information management functions; 5. Support for real-time text messages sent, time sent; 6. Release of information to add, delete and edit modify function; 7. Different operational definition of users have different operating permissions, user management at different levels; 5, wireless LED information release system applications: As a new information carrier, wireless LED information release system has a vast market and use, can be widely used in government, business, transportation, catering, construction, tourism, sports, transportation and other industries and sectors.
Residential buildings: The wireless LED display installed in the district, building and courtyard at the entrance, as the district information bulletin board to facilitate the property and release the property to inform the residents, public information, Community Bulletin, weather information, safety knowledge and traffic tips, community information and so on, contribute to community integration and dissemination of information, clean up the environment of the community to enhance the image in the community; Government departments: the wireless LED display installed in government departments, business lobby, as the Chief publicity column for release of government policies, notices publicity, opinion polls, emergency notification, early warning tips, weather information, publicity and other laws and regulations; wireless LED display could be weather, safety, transportation, water, fire, civil affairs, public security, urban management, such as industry sector information and early warning systems standard terminal. Supermarket stores: wireless LED screen doors installed in the store first, supermarket entrance hall, shelves Department for the prompt release guide, supply and demand information, price quotes, promotional discounts, introduce new products, businesses recommended greetings, such as customers, is the business customer's media guide and information dissemination of the window, help to attract consumers, promote the dissemination of information businesses. Transit Station: The wireless LED display installed at the station waiting room, toll stations and the site as electronic bulletin screen, for publishing public information, weather forecasts, all kinds of advertising, real-time news, traffic road, the ticketing situation, the interim notice and so on; Transport vehicles: wireless LED displays installed in public transport, urban taxis, subway trains and rail vehicles for the release of urban news, weather forecasts, road transport, business information, etc.; Advertising media: wireless LED display can be embedded into the advertising light boxes, outdoor advertising, signs of building numbers, road signs in real-time for publishing ads and information, can effectively raise the overall advertising effectiveness, and expand the rate of advertising audiences. Agriculture and rural areas: wireless LED display will be installed in villages, towns, an important place, as a rural supply and demand information column for the release of agricultural science and technology, agricultural policy, emergency broadcasting, market information, supply and demand information and climate information, such as disease prevention and treatment; Hotels: optional column with premium wireless LED display installed in the front hall, etc., for the release price information bulletin notice, weather notice, consumer guides, welcomed the language, etc.; School Hospital: The wireless-mail as an electronic bulletin board for the release of service guidelines, publicity fees, prevention reminders, notices of meetings, academic activities, supply and demand information
Wireless LED display can also be used for tourist attractions, the Group of businesses, independent internal wireless networking, in order to achieve multi-level, cross-class, flat-class wireless information sharing system. Wireless LED applications 6, wireless LED information release system network topology: Wireless LED information release system consists of LED displays, LED display controller, wireless data transmission unit and wireless LED information release center platform is composed of several components. Control center through the LED display information released software to GPRS / CDMA network for data transmission carrier and wireless data transmission unit and LED display controller for the LED screen access terminals, remote from the control center to the remote wireless LED display device Send fax messages. 7, wireless LED information release system software description: Wireless LED information release system platform of Beijing Jia Xin Fu independent research and development of LED information release platform, referred to as WMPC, is the Wireless Message Publish Center acronym. WMPC is a system for data transmission hub, is responsible for the system to send and receive data, storage and processing, to meet the information management, publishing, editing, statistics and other management needs. Wireless LED information release system platform include: customer service agent (UAS), data distribution center (MEC), a database application server (DAS), storage server (SS), communication interface (CI) and information management system (MIS) software package, such as . The maximum support to the 100 million wireless LED display terminal. System uses a modular design, each module in the fast, efficient and stable operation on the basis of the various modules can be seamlessly to complete the different applications, different LED display units, different means of communication in the same unified system running.
The program using the network control mode, by telephone, wireless remote control, internet network remote control work of the state of the water heater, hot water anytime, anywhere to meet your needs. A functional description: Network control mode, realized through time and space of four remote control mode: 1, choose a wireless remote control on the water heater; 2, may choose at any time through the internet network to monitor the work of the state of the water heater and water heater remote control working condition; 3, by telephone to control the work of the state of the water heater, water heater to achieve the appointment, switches, etc.; 4, can bind a number of mobile phone users servers to achieve a cell phone text message on the water heater for remote condition monitoring and control, without having to wait for time to avoid long-term waste of energy heating. In addition, the realization of the protection features such as water heaters, over-temperature protection, dry protection, leakage protection.
Second, product characteristics: 1, the program from the network controller, remote control, water heater controller, the server has four major components, all of which can independently control the composition of multiple independent systems to control water heaters, water heaters can be arbitrary choice of control. 2, network control of the main chips for embedded systems using Microchip's Internet access application development out of eight integrated Ethernet Controller PIC18F66J60, the system has been embedded Microchip released based on this chip TCP / IP protocol stack. 3, wireless remote control chip U.S. companies Integration IA4421, remote control over a range of up to 30 meters, at least can penetrate a wall blocking 20CM remote. 4, network controller and heater controller to control the use of wireless means to avoid the water heater installed wiring bring trouble.
Third, technical parameters: Wireless communications Frequency: bi-directional transmission, 433 MHz Wireless communication rate: ≥ 9.6 Kbps Ethernet port: 10M Phone / telephone control decoding methods: DTMF (dual-audio decoder) The use of ambient temperature: -40 ℃ ~ +75 ℃ The use of relative humidity: 95% RH below (at room temperature at 25 ℃)
The utility model involves a massage chair with a wireless remote control remote cluster. It includes the mother of a remote control (1) and sub-remote control (2), the mother described the remote control (1) through the cable and direct connection to massage chairs, and its characteristics is described in the parent remote control (1) set up a wireless signal Receiving System (3), described in a subset of the remote control (2) set up with the receiving system (3) adaptation of the wireless signal launching system (4). Its structure is simple and easy to use, suitable for simplifying the operation of massage chair controller promotion.
No wiring Emissions, control switches, without wiring. Easy installation Where is convenient, where the installation. Like how to install, on how to install. Partition control (without barriers) Wall, separated rooms, is still effectively controlled. Safe and reliable Away from the strong power to operate, the elderly, children feel more at ease to use. Carry Lighting switch, make in their hands, like how to control on how to control. Where would like to bring on to where. Simple Use only one remote control, you can manipulate the lighting of the room. Only in one place, you can manipulate the lighting in all rooms. Personalized settings The same switch can control a number of lamps; The same lamps can install multiple switches; Intelligent combination of A switch can control multiple rooms; Switch control can be more than a room; Any combination of, will not be misled into opening. Humanized operation Open directions: 360-degree direction, do not have to turn around, free remote control. Open Location :15-30 meters, do not have to stand up, we can control. (Open space up to 100 meters.) The application of broad, long life Be connected with a variety of household lamps (incandescent, fluorescent, energy-saving lamps, curtains, fans, etc.). Switching frequency of up to 100,000 times as long as 50 years.
FA1227B wireless doorbell visualization program Features: 1. Built-in SD card interface that can store audio and video and the local radio waves transmitted through the audio-video and high-resolution photos, 2.USB the PC client interface, allowing remote network control; 3. Transmitter to trigger auto-sensing, image mobile detection, temperature sensors trigger. 4. Farthest distance of 150 meters can be done. 5. System with a 3.5-inch QVGA screen, USB interface, 1.3 million, or 300,000-pixel image capture, voice of the acquisition and playback simultaneously! 6. The real-time image data is sent to the 2.4G wireless networks, can form a communication platform Jiutai FA1227B. 7. To support real-time MJPEG + ADPCM (images plus sound), ultra-high data compression rate; 8. The system can support multi-channel audio and video switch control, can support up to 8; 9. To support local storage remote audio and video, 64MBNandFlash own memory, can retain historical data; 10. System Configuration flexibility, random FA1227B will be configured as master and slave machines; 11. Long rechargeable battery-powered; 12. Transmitter to trigger auto-sensing, image mobile detection, temperature sensors trigger. Product parameters: Maximum image resolution: 1280 * 1024 or 640 * 480 Image output format: JPEG, Motion JPEG + ADPCM Video parameters: MAX = 320 * 240 10 frames per second Focal length: 0.3M-infinity brightness :0.01-100, 000Lux Wide-angle lens: 75-140 degrees Host Size: 28mm * 48mm * 72mm
The use of single-chip computer to the wireless telemetry Electronic Hanging said the quality of sensor micro-volt signals, automatic measurement, signal coding, wireless telemetry fired for receiving, real-time signal processing, display, print and other treatment methods. Adoption of wireless transmission, said the quality of data, so that the quality of simple objects more convenient to operate; in circuit design, using PPcm system, so the launch, receive power greatly reduced power consumption very small; the use of secondary coding and decoding technology to send the receipt, anti-interference ability significantly increased; and hardware circuit software so that hardware is simple, cost-effective high -
RF wireless remote control pen flip a teacher, a lecture demonstration of the close aide who is a multimedia projector, notebook computers essential option! And as sales of electronic gifts! Whether you're in the classroom in which corner, or in the conference room behind and live interactive lecture people, just you touch "wireless speech pen," you want the screen will automatically appear on the screen. No longer need special help you operate the notebook, you can also save a back-for-page hard rostrum. Technical Features: Presentation page from top to bottom, laser pointer pen integrated, simple and practical. Mini design, attractive appearance and easy to carry. RF RF (radio) remote control design, remote control distance of up to 15 meters, there is no need at the receiver, can bypass the obstruction. Not equipped with special operations or notebook PC, demonstration, classroom teaching is only one person can easily get. WINDOW98/2000/ME/XP applicable to various systems. Demonstration in support of various documents, Web pages, e-book browser. Receivers such as the U disk size, optional built-in USB receiver. Convenient to carry all the documents, USB interface, plug and play, do not need to install drivers.
The main parameters: Action Distance: 6 cm Wireless launch Distance: open to 80 meters Battery type: 12-volt battery Columnar Battery Life: 6 months can configure different types of "host." The application of occasions: Induction of the opening and closing of doors and windows for installation in large steel doors or metal door. Shops, stores, supermarkets volumes dedicated anti-theft gate: When it was illegal to rolling shutter door prized open 6 centimeters, the product immediately to host anti-theft alarm signal, anti-theft alarm host of speakers, will be issued a loud alarm sounds, so that illegal can not start, played the role of anti-theft alarm. Suitable for shops, stores, garage and other places. ( volumes are dedicatedgate, can be easily installed in the volume on the gate.) With host-based: in volume have been illegally opened the gate to trigger alarm situation, theto the "host" Send touch alarm signals generated by the host all kinds of alarm signals and direct dial telephone, told the owner of thieves entered the shop, garage or warehouse, play a role in anti-theft alarm. Suitable for shops, garage and other places. Market prospects: A county-level cities have tens of thousands of commercial pavement, maintenance, catering establishments, warehouses, garages, most of these places at night with anti-theft gate volumes, the owners slept in their homes, their hearts are in the store, and can not sleep soundly, Now, with our products, the owner can sit back and relax! Because even if a thief were to patronize stores, the owner can also be immediately received by the system automatically calls the police to inform the owner of phone! Moreover, our system is very advanced, so long as the volume slightly to prize open the gates of a slit, the system immediately report to the police. Consider: In the silence of the night, as the air defense alarm as 120 dB noise sounded great, there would have been bold enough to continue breaking son thief trying to crimes it? With it, owners can sleep at ease.
Handsheets directly copied from table with a table of data and control valves. When the meter reading meter reading staff, the meter reading device issued direct meter reading meter reading signals, the system overall low cost, the program matures, system maintenance less. Table with the use of battery-powered, table-side system with average power consumption <20uA, dormant during the current 3uA, emission current <40mA, lithium battery-powered system is stable and working hours> 8 years. Meter-reading device to copy from a high floor general for <11-storey residential buildings general, particularly suitable for the current transformation of the old city projects in China. Meter-reading staff to carry wireless meter reading, and one by one to each floor, all the tables with data copied from the completion of the wireless meter-reading devices wired back to form with all the data into the computer management system for meter reading. The system is particularly applicable to the transformation of old buildings projects, housing units in the three tables set down, low floors for new buildings, urban high-rise building alignment difficulties wired, wireless communication signals of the local poor.
Automotive security applications used in a typical system consists of a remote control to open the door installed in the vehicle controller and a user-portable transceiver (or transmitter, that is, wireless remote control door keys). Transceiver (or transmitter) is generally taken to include a microcontroller (MCU), RF devices as well as buttons and LED devices, such as man-machine interface. Transceiver (or transmitter) is usually closed, only press the button or when the work will need to send data. Traditional transmitter used to send data to the controller, it is a one-way communication. However, this situation is changing. New Intelligent transceiver can send data, but also receive data, and therefore two-way communication. In the two-way communication system, the controller (installed in the car) and the transceiver (ie, car keys) can be achieved automatically communications, do not need to man-machine interface. Frequencies can be achieved using two low-cost two-way communication transceivers, of which 125 kHz for receiving data, UHF (315, 433,868 or 915 MHz) used to launch data. Due to the spread of 125 kHz signal is not strong, so the scope of two-way communication is usually in the following three meters. Since the transceiver button itself can still provide for optional other operations, so the one-way (from the transceiver to the controller) the scope of the Send button information can be longer. In such applications, the controller using 125kHz frequency to send orders, while at the same time the scope of the search effective UHF transceiver frequency response. Intelligent transceiver usually in receive mode, waiting for an effective command 125kHz controller. If you receive a valid command controller, then the transceiver will respond through the UHF frequency. This is commonly referred to as passive remote control to open the door (PKE) system. Traditional open-door system of remote control transmitter and a new type of passive remote control to open the door system transceiver biggest difference between the latter has a two-way communication for the 125kHz circuit. Use, including digital front-end and low-frequency integrated circuit System-on-Chip (SoC) Smart MCU can achieve low-cost transceiver PKE. PKE transceiver as a result of the work depends on the automatic and inter-controller communications, do not need to man-machine interface, so the reliability of the system depends directly on the controller and transceiver signals between the situation. So facing the problem is whether the transceiver like the traditional man-machine interface are as reliable as the work of transceivers (ie, car keys) price can it be done with the traditional solutions almost? European luxury car manufacturers have already adopted the enhanced security and privacy features, along with a large Asian OEM manufacturers (Toyota, Nissan, Hyundai, Mazda, as well as large Kivu, etc.) also started in their mass-market car platform used in such PKE system, the situation is changing rapidly. This trend brought about by economies of scale will allow cost-effective PKE system more attractive for end customers, thus ensuring that prices for consumers.
Intelligent passive remote control to open the door automatically (PKE) systems, using two-way communication. Transceiver (the key) the use of three orthogonal placed LC resonance antenna controller command (125 kHz), and through UHF transmitter to send in response.
Figure 2 gives a smart PKE system. Transceiver on the button for the optional, but car doors do not need artificial interference action can be automatically completed. PKE Application of two-way communication sequence is as follows:
(a) the use of 125 KHz frequency controllers send a command; (b) transceiver using three orthogonal array of 125 kHz resonant antenna to receive 125 kHz controller orders; (c) If the order is correct, transceiver via a UHF transmitter to send response (encrypted data); (d) respond to the controller to receive data, if the data is correctly activated switch to open the door. System design engineers the challenge is to decide how to raise the 125 kHz range launch controller orders, thereby ensuring the transceiver battery life long enough to ensure that circumstances reliable operation. The scope of two-way communication requirements of the input sensitivity In battery-powered transceiver applications, UHF signals (315/433/915 MHz) maximum communication distance is about 100 meters, but for low-frequency signals (LF, 125 KHz) are only a few meters. Therefore, the dual-frequency transceiver communications PKE mainly by the 125 KHz controller command to launch the scope of the restrictions. As the low-frequency signal transmission characteristics, 125KHz signal attenuation with the transmission distance rapidly. For example, suppose the antenna controller output voltage of about 300 Vpp, then about three meters from the transceiver to the antenna to receive the voltage is only about 3mVpp, which is almost the level of environmental noise. Weak signal detection system designers are faced with a challenging problem. Some may be in doubt, why not in both directions to achieve the use of UHF two-way communication. The answer to this question is: First of all, in the transceiver to achieve the cost of UHF receivers than 125 kHz detection circuit is higher, and secondly, three-meter distance for the majority of applications PKE enough. 125 kHz to improve the transmission range of the controller commands, there are two possible solutions to consider: To improve the controller's transmission power, or improve the receiver's input sensitivity. However, due to government regulation requirements, transmitter maximum power is limited. Therefore, the assumption that the controller in the extent permitted maximum transmission power, then at this time to raise the input signal detection sensitivity is the only effective solution. In order to achieve three meters away from the two-way communication, receiver's input sensitivity must be reached about 3mVpp.
Plate over the remote control garage door system is to control the use of radio signals through the flip open the way to enhance a new type of automatic garage door system. This article on the market in the existing garage door conducting surveys and research, based on a number of remote control garage door for actuation and control of the way to improve the program, and design methods. In this paper, the remote control garage door of working methods of the analysis and comparison: inverted plate on the garage door remote control to enhance the design of linkage methods, conducted in-depth and meticulous research: a remote control device for a study on the remote control of the working principle and relating to control security on the remote control signal codec issues, conducted a detailed analysis and presentation: design and validate the control circuit logic function of the realization of methods, described the anti-jamming circuit measures: to design a new power to deal with institutions, the use of pure mechanical agencies, to achieve the convenience of electric and manual switching, the completion of the user to operate the various requirements of the portal, the system's ability to respond to special circumstances to be strengthened. Plate over the remote control garage door can be reversed to enhance the correct key is to enhance the linkage design. The traditional design method of time-consuming and laborious, and not easy to duplicate the design parameters is not easy to modify. To this end, the author of the integrated use of MATLAB and ADAMS software, developed a set used in the design of the linkage, intuitive, easy, repeatable, easy to modify the design method to achieve linkage size and location identification, combined with virtual prototyping technology, upgrade the agency to achieve the kinematics and dynamics simulation analysis, and on this basis to optimize the design. Virtual model to simulate the effect of computing are very good.
The program wireless sensor sub-machine using TI's 16-bit single-chip ultra-low power MSP430F2012 as the core, host MSP430F41X used as the core, combined with CC1100 wireless sensors and ultrasonic range finder with the outside world to achieve automotive obstacle detection alarm distance. Ultrasonic Ranging wireless sensor uses lithium battery-powered, on-chip 10-bit ADC in the Timer-A regular testing under the control of the supply voltage, ranging sensor uses popular reality ultrasonic sensor can achieve wide-angle of 60 degrees away from the obstacle detection ; ultrasonic sensors in the MCU through the week under the control of the conversion to level sensor provides up to 100V voltage field around the launch of ultrasonic signals, external obstacles encountered in the ultrasonic sound waves generated reflection, this time to return to being a part of acoustic sensors through external signal amplification transported by low-noise level of side-pass filter, after entering the chip signal waveform acquisition ADC10, interception peak waveform as detected by echo signal point in time, in this process as ultrasonic Timer-A launch to receive back the time difference timer waves through the acoustic propagation velocity of the car, such as calculated by the distance barrier with the outside world; detection distance data transmission in real time through the CC1100 to install indoor driving the host, the distance from the host showed the situation of obstructions; 4 ~ 9 from the real-time detection machine initiative outside obstacles, the real-time, efficient and fast. Host received from the plane sent a distance of obstructions to the public through the voice chip is accurate to 0.1 meters away from the accuracy of alarm given by the drive-chip LCD driver liquid crystal display and battery voltage, such as distance information; external crystal 32.768KHz CPU can be used as the closure of the state of the Basic-Timer clock source, as a system of real-time clock, calendar, accuracy up to 1S / day, could serve as a vehicle to use the clock. The program has a low power consumption, long battery life, small size, convenient and flexible installation, low error rate, high reliability, the system simple combination of characteristics such as wireless sensor reversing radar is the best option. Details Web site: www.lierda.com.
MSP430F2012 characteristics: ※ low operating voltage range: 1.8 ~ 3.6V ※ ultra-low power: Patterns of activity: 200uA @ 1MHZ, 2.2V Standby mode: 0.5uA Power-down mode (RAM data retention mode): 0.1uA ※ five power-saving mode ※ wake up from standby mode does not exceed 1us ※ 16 bit RISC Reduced Instruction system, 62.5ns instruction cycle ※ 2 zones capture / compare register 16 regular Timer-A ※ USI support for Universal Serial Interface SPI, I2C interface ※ 10-BIT, 200KSPS, A / D converter
MSP430F413 characteristics: ※ low operating voltage range: 1.8 ~ 3.6V ※ Flash Capacity: 4 ~ 32K ※ ultra-low power: Patterns of activity: 200uA @ 1MHZ, 2.2V Standby mode: 0.7uA Power-down mode (RAM data retention mode): 0.1uA ※ five power-saving mode ※ wake up from standby mode does not exceed 6us ※ 16 bit RISC Reduced Instruction system, 62.5ns instruction cycle ※ 3 zones capture / compare register 16 regular Timer-A ※ LCD controller / driver (up to 96) ※ chip comparators, can be used for analog signal can be used for comparison or hypotenuse A / D conversion
TPMS common market program by three leading chip supplier: ge, infineon and freescale. ge TPMS company in the field by virtue of its 10 years design experience, making it the one of the leaders in the field. Its development npx2 contains pressure Temperature, acceleration and battery voltage four sensors, the platform-based TPMS system more compact, energy-saving, stable, while reducing the sensor module Block size and weight. 1995, ge universal novasensor on the provision of pressure sensors to the TPMS system. To date, shipments of more than 10 million, statistics it does not Yield only parts per million (1ppm). Its shipment to customers such as schrader, smartire, trw, lear, such as first-line companies are. From 2004 The beginning, ge generic second-generation tire pressure sensor NPX begun shipping. The integration of pressure, temperature sensors, and one 8-bit risc mcu. Also introduced the same year npx ii, and npx i compared, npx ii addition to all the features npxi, another integrated inertial sensors, can withstand 5000g acceleration. 2006, ge Universal will launch npx iii. npx iii has npx ii all the features, but also to rf launch with a single integrated circuit chip side Case. TPMS existing programs will bring a breakthrough.
I. Overview: Because traditional LED display input only through the data lines directly connected to the computer, so the traditional LED display for the remote information can not meet the needs of real-time, therefore, unable to build a large-scale networked information LED screen system. Fu Ka-yan from Beijing Science and Technology Co., Ltd. to develop the LED information release system can effectively resolve the LED display remote network problems. The system is based on GPRS / CDMA wireless network technology to provide universal LED communications control interface, to achieve large-scale LED display network. Whether ordinary article text screen, or large-screen graphic screen, as long as the LED connected to wireless transmission terminals, will be able to immediately break the traditional LED display limitations, to become a large-scale wireless networking LED information display. Wireless LED information display is a new information media, once available, it is widely accepted by social groups, and its "floating" display information dissemination and networking features of the more highly regarded by the advertising industry has become a brand-new advertising media. No matter where on the LED display, LED display the number, the system's control center will be able to information accurate, real-time release to the designated one or more or all of the LED screen. Wireless LED information release system can greatly enhance the LED display as an information carrier released information shows that the flexibility and real-time, in order to expand the application of LED screens to play great effect.
Second, wireless LED information release system features: (1) large-scale network: traditional LED display content from a computer through the serial data lines to send, display the number of restrictions in terms of scale received. Wireless LED information release system, through GPRS \ CDMA wireless networks to send messages using TCP network transmission protocol, terminal network can be as many as tens of thousands across an unlimited number. (2) real-time dissemination of information: the traditional fixed-LED screen can only display the information stored within the controller, for release of new information only through the computer to update information online. Wireless LED display can receive information center issued information. (3) from the distance restrictions: traditional electronic display only a short distance use, generally only tens, wireless LED display across the country, as long as the GPRS wireless network coverage area can use, free from distance and location restrictions. (4) to facilitate installation and maintenance: As no need for the laying of fiber optic cable or communication cables, so wireless LED display is easy to choose the installation location. Modular product design, ease of maintenance and overhaul.
Third, the wireless LED information release system design principles: (1) nature: full use of the computer Internet, mobile wireless communications systems, LED display control, such as advanced technology, the design of advanced wireless LED information release system. The use of advanced system software platform and terminal equipment, wireless LED will not only release information networking needs, and can support all industry-related specific business needs. (2) reliability: As the wireless LED information release system uses the special nature of the environment, must ensure that the system is relatively stable and reliable. The reliability of the system is mainly embodied in three aspects: First, Center for system reliability, the reliability of the system including hardware, operating system, databases, services such as software platform system reliability; Second, wireless LED display terminal reliability , and mainly refers to vehicle wireless LED display terminal can be stable and reliable work, the low rate of hardware failure. Third, a reliable communication mechanism, because the use of wireless network communication environment characterized by its complexity, the system communication mechanism must be highly efficient and reliable data protection. (3) scalability: The system should have a good scalability, when the terminal increase in the number of users to extend the scope of use, increased system functionality, is a smooth upgrade, the protection of investment. At present, wireless LED information release system can support various types of existing wireless access, GSM communication system, GPRS communication system, CDMA communication system, and implemented these systems and network operations, the future through the development and installation of the corresponding communication interface agreement to achieve other future communication system access.
(4) practicality: the operation of the entire system to facilitate simple and efficient as the goal, not only fully reflects the characteristics of rapid reaction, but also easy to handle personnel and dissemination of information processing for management to keep abreast of the statistical information. (5) Confidentiality: For the system management strict rights management, only a certain amount of keys to access permissions, monitoring, implementation of appropriate management and control operation, to ensure that the system is safe and reliable. Fourth, wireless LED information release system, the main functions of functions: 1. System maximum support wireless LED display is greater than the number of 10,000; 2. Communications system to support: GPRS communication, CDMA communications; 3. System software using B / S structure; 4. LED display equipment to support information management functions; 5. Support for real-time text messages sent, time sent; 6. Release of information to add, delete and edit modify function; 7. Different operational definition of users have different operating permissions, user management at different levels; 5, wireless LED information release system applications: As a new information carrier, wireless LED information release system has a vast market and use, can be widely used in government, business, transportation, catering, construction, tourism, sports, transportation and other industries and sectors.
Residential buildings: The wireless LED display installed in the district, building and courtyard at the entrance, as the district information bulletin board to facilitate the property and release the property to inform the residents, public information, Community Bulletin, weather information, safety knowledge and traffic tips, community information and so on, contribute to community integration and dissemination of information, clean up the environment of the community to enhance the image in the community; Government departments: the wireless LED display installed in government departments, business lobby, as the Chief publicity column for release of government policies, notices publicity, opinion polls, emergency notification, early warning tips, weather information, publicity and other laws and regulations; wireless LED display could be weather, safety, transportation, water, fire, civil affairs, public security, urban management, such as industry sector information and early warning systems standard terminal. Supermarket stores: wireless LED screen doors installed in the store first, supermarket entrance hall, shelves Department for the prompt release guide, supply and demand information, price quotes, promotional discounts, introduce new products, businesses recommended greetings, such as customers, is the business customer's media guide and information dissemination of the window, help to attract consumers, promote the dissemination of information businesses. Transit Station: The wireless LED display installed at the station waiting room, toll stations and the site as electronic bulletin screen, for publishing public information, weather forecasts, all kinds of advertising, real-time news, traffic road, the ticketing situation, the interim notice and so on; Transport vehicles: wireless LED displays installed in public transport, urban taxis, subway trains and rail vehicles for the release of urban news, weather forecasts, road transport, business information, etc.; Advertising media: wireless LED display can be embedded into the advertising light boxes, outdoor advertising, signs of building numbers, road signs in real-time for publishing ads and information, can effectively raise the overall advertising effectiveness, and expand the rate of advertising audiences. Agriculture and rural areas: wireless LED display will be installed in villages, towns, an important place, as a rural supply and demand information column for the release of agricultural science and technology, agricultural policy, emergency broadcasting, market information, supply and demand information and climate information, such as disease prevention and treatment; Hotels: optional column with premium wireless LED display installed in the front hall, etc., for the release price information bulletin notice, weather notice, consumer guides, welcomed the language, etc.; School Hospital: The wireless-mail as an electronic bulletin board for the release of service guidelines, publicity fees, prevention reminders, notices of meetings, academic activities, supply and demand information
Wireless LED display can also be used for tourist attractions, the Group of businesses, independent internal wireless networking, in order to achieve multi-level, cross-class, flat-class wireless information sharing system. Wireless LED applications 6, wireless LED information release system network topology: Wireless LED information release system consists of LED displays, LED display controller, wireless data transmission unit and wireless LED information release center platform is composed of several components. Control center through the LED display information released software to GPRS / CDMA network for data transmission carrier and wireless data transmission unit and LED display controller for the LED screen access terminals, remote from the control center to the remote wireless LED display device Send fax messages. 7, wireless LED information release system software description: Wireless LED information release system platform of Beijing Jia Xin Fu independent research and development of LED information release platform, referred to as WMPC, is the Wireless Message Publish Center acronym. WMPC is a system for data transmission hub, is responsible for the system to send and receive data, storage and processing, to meet the information management, publishing, editing, statistics and other management needs. Wireless LED information release system platform include: customer service agent (UAS), data distribution center (MEC), a database application server (DAS), storage server (SS), communication interface (CI) and information management system (MIS) software package, such as . The maximum support to the 100 million wireless LED display terminal. System uses a modular design, each module in the fast, efficient and stable operation on the basis of the various modules can be seamlessly to complete the different applications, different LED display units, different means of communication in the same unified system running.
The program using the network control mode, by telephone, wireless remote control, internet network remote control work of the state of the water heater, hot water anytime, anywhere to meet your needs. A functional description: Network control mode, realized through time and space of four remote control mode: 1, choose a wireless remote control on the water heater; 2, may choose at any time through the internet network to monitor the work of the state of the water heater and water heater remote control working condition; 3, by telephone to control the work of the state of the water heater, water heater to achieve the appointment, switches, etc.; 4, can bind a number of mobile phone users servers to achieve a cell phone text message on the water heater for remote condition monitoring and control, without having to wait for time to avoid long-term waste of energy heating. In addition, the realization of the protection features such as water heaters, over-temperature protection, dry protection, leakage protection.
Second, product characteristics: 1, the program from the network controller, remote control, water heater controller, the server has four major components, all of which can independently control the composition of multiple independent systems to control water heaters, water heaters can be arbitrary choice of control. 2, network control of the main chips for embedded systems using Microchip's Internet access application development out of eight integrated Ethernet Controller PIC18F66J60, the system has been embedded Microchip released based on this chip TCP / IP protocol stack. 3, wireless remote control chip U.S. companies Integration IA4421, remote control over a range of up to 30 meters, at least can penetrate a wall blocking 20CM remote. 4, network controller and heater controller to control the use of wireless means to avoid the water heater installed wiring bring trouble.
Third, technical parameters: Wireless communications Frequency: bi-directional transmission, 433 MHz Wireless communication rate: ≥ 9.6 Kbps Ethernet port: 10M Phone / telephone control decoding methods: DTMF (dual-audio decoder) The use of ambient temperature: -40 ℃ ~ +75 ℃ The use of relative humidity: 95% RH below (at room temperature at 25 ℃)
The utility model involves a massage chair with a wireless remote control remote cluster. It includes the mother of a remote control (1) and sub-remote control (2), the mother described the remote control (1) through the cable and direct connection to massage chairs, and its characteristics is described in the parent remote control (1) set up a wireless signal Receiving System (3), described in a subset of the remote control (2) set up with the receiving system (3) adaptation of the wireless signal launching system (4). Its structure is simple and easy to use, suitable for simplifying the operation of massage chair controller promotion.
No wiring Emissions, control switches, without wiring. Easy installation Where is convenient, where the installation. Like how to install, on how to install. Partition control (without barriers) Wall, separated rooms, is still effectively controlled. Safe and reliable Away from the strong power to operate, the elderly, children feel more at ease to use. Carry Lighting switch, make in their hands, like how to control on how to control. Where would like to bring on to where. Simple Use only one remote control, you can manipulate the lighting of the room. Only in one place, you can manipulate the lighting in all rooms. Personalized settings The same switch can control a number of lamps; The same lamps can install multiple switches; Intelligent combination of A switch can control multiple rooms; Switch control can be more than a room; Any combination of, will not be misled into opening. Humanized operation Open directions: 360-degree direction, do not have to turn around, free remote control. Open Location :15-30 meters, do not have to stand up, we can control. (Open space up to 100 meters.) The application of broad, long life Be connected with a variety of household lamps (incandescent, fluorescent, energy-saving lamps, curtains, fans, etc.). Switching frequency of up to 100,000 times as long as 50 years.
FA1227B wireless doorbell visualization program Features: 1. Built-in SD card interface that can store audio and video and the local radio waves transmitted through the audio-video and high-resolution photos, 2.USB the PC client interface, allowing remote network control; 3. Transmitter to trigger auto-sensing, image mobile detection, temperature sensors trigger. 4. Farthest distance of 150 meters can be done. 5. System with a 3.5-inch QVGA screen, USB interface, 1.3 million, or 300,000-pixel image capture, voice of the acquisition and playback simultaneously! 6. The real-time image data is sent to the 2.4G wireless networks, can form a communication platform Jiutai FA1227B. 7. To support real-time MJPEG + ADPCM (images plus sound), ultra-high data compression rate; 8. The system can support multi-channel audio and video switch control, can support up to 8; 9. To support local storage remote audio and video, 64MBNandFlash own memory, can retain historical data; 10. System Configuration flexibility, random FA1227B will be configured as master and slave machines; 11. Long rechargeable battery-powered; 12. Transmitter to trigger auto-sensing, image mobile detection, temperature sensors trigger. Product parameters: Maximum image resolution: 1280 * 1024 or 640 * 480 Image output format: JPEG, Motion JPEG + ADPCM Video parameters: MAX = 320 * 240 10 frames per second Focal length: 0.3M-infinity brightness :0.01-100, 000Lux Wide-angle lens: 75-140 degrees Host Size: 28mm * 48mm * 72mm
The use of single-chip computer to the wireless telemetry Electronic Hanging said the quality of sensor micro-volt signals, automatic measurement, signal coding, wireless telemetry fired for receiving, real-time signal processing, display, print and other treatment methods. Adoption of wireless transmission, said the quality of data, so that the quality of simple objects more convenient to operate; in circuit design, using PPcm system, so the launch, receive power greatly reduced power consumption very small; the use of secondary coding and decoding technology to send the receipt, anti-interference ability significantly increased; and hardware circuit software so that hardware is simple, cost-effective high -
RF wireless remote control pen flip a teacher, a lecture demonstration of the close aide who is a multimedia projector, notebook computers essential option! And as sales of electronic gifts! Whether you're in the classroom in which corner, or in the conference room behind and live interactive lecture people, just you touch "wireless speech pen," you want the screen will automatically appear on the screen. No longer need special help you operate the notebook, you can also save a back-for-page hard rostrum. Technical Features: Presentation page from top to bottom, laser pointer pen integrated, simple and practical. Mini design, attractive appearance and easy to carry. RF RF (radio) remote control design, remote control distance of up to 15 meters, there is no need at the receiver, can bypass the obstruction. Not equipped with special operations or notebook PC, demonstration, classroom teaching is only one person can easily get. WINDOW98/2000/ME/XP applicable to various systems. Demonstration in support of various documents, Web pages, e-book browser. Receivers such as the U disk size, optional built-in USB receiver. Convenient to carry all the documents, USB interface, plug and play, do not need to install drivers.
The main parameters: Action Distance: 6 cm Wireless launch Distance: open to 80 meters Battery type: 12-volt battery Columnar Battery Life: 6 months can configure different types of "host." The application of occasions: Induction of the opening and closing of doors and windows for installation in large steel doors or metal door. Shops, stores, supermarkets volumes dedicated anti-theft gate: When it was illegal to rolling shutter door prized open 6 centimeters, the product immediately to host anti-theft alarm signal, anti-theft alarm host of speakers, will be issued a loud alarm sounds, so that illegal can not start, played the role of anti-theft alarm. Suitable for shops, stores, garage and other places. ( volumes are dedicatedgate, can be easily installed in the volume on the gate.) With host-based: in volume have been illegally opened the gate to trigger alarm situation, theto the "host" Send touch alarm signals generated by the host all kinds of alarm signals and direct dial telephone, told the owner of thieves entered the shop, garage or warehouse, play a role in anti-theft alarm. Suitable for shops, garage and other places. Market prospects: A county-level cities have tens of thousands of commercial pavement, maintenance, catering establishments, warehouses, garages, most of these places at night with anti-theft gate volumes, the owners slept in their homes, their hearts are in the store, and can not sleep soundly, Now, with our products, the owner can sit back and relax! Because even if a thief were to patronize stores, the owner can also be immediately received by the system automatically calls the police to inform the owner of phone! Moreover, our system is very advanced, so long as the volume slightly to prize open the gates of a slit, the system immediately report to the police. Consider: In the silence of the night, as the air defense alarm as 120 dB noise sounded great, there would have been bold enough to continue breaking son thief trying to crimes it? With it, owners can sleep at ease.
Handsheets directly copied from table with a table of data and control valves. When the meter reading meter reading staff, the meter reading device issued direct meter reading meter reading signals, the system overall low cost, the program matures, system maintenance less. Table with the use of battery-powered, table-side system with average power consumption <20uA, dormant during the current 3uA, emission current <40mA, lithium battery-powered system is stable and working hours> 8 years. Meter-reading device to copy from a high floor general for <11-storey residential buildings general, particularly suitable for the current transformation of the old city projects in China. Meter-reading staff to carry wireless meter reading, and one by one to each floor, all the tables with data copied from the completion of the wireless meter-reading devices wired back to form with all the data into the computer management system for meter reading. The system is particularly applicable to the transformation of old buildings projects, housing units in the three tables set down, low floors for new buildings, urban high-rise building alignment difficulties wired, wireless communication signals of the local poor.
Automotive security applications used in a typical system consists of a remote control to open the door installed in the vehicle controller and a user-portable transceiver (or transmitter, that is, wireless remote control door keys). Transceiver (or transmitter) is generally taken to include a microcontroller (MCU), RF devices as well as buttons and LED devices, such as man-machine interface. Transceiver (or transmitter) is usually closed, only press the button or when the work will need to send data. Traditional transmitter used to send data to the controller, it is a one-way communication. However, this situation is changing. New Intelligent transceiver can send data, but also receive data, and therefore two-way communication. In the two-way communication system, the controller (installed in the car) and the transceiver (ie, car keys) can be achieved automatically communications, do not need to man-machine interface. Frequencies can be achieved using two low-cost two-way communication transceivers, of which 125 kHz for receiving data, UHF (315, 433,868 or 915 MHz) used to launch data. Due to the spread of 125 kHz signal is not strong, so the scope of two-way communication is usually in the following three meters. Since the transceiver button itself can still provide for optional other operations, so the one-way (from the transceiver to the controller) the scope of the Send button information can be longer. In such applications, the controller using 125kHz frequency to send orders, while at the same time the scope of the search effective UHF transceiver frequency response. Intelligent transceiver usually in receive mode, waiting for an effective command 125kHz controller. If you receive a valid command controller, then the transceiver will respond through the UHF frequency. This is commonly referred to as passive remote control to open the door (PKE) system. Traditional open-door system of remote control transmitter and a new type of passive remote control to open the door system transceiver biggest difference between the latter has a two-way communication for the 125kHz circuit. Use, including digital front-end and low-frequency integrated circuit System-on-Chip (SoC) Smart MCU can achieve low-cost transceiver PKE. PKE transceiver as a result of the work depends on the automatic and inter-controller communications, do not need to man-machine interface, so the reliability of the system depends directly on the controller and transceiver signals between the situation. So facing the problem is whether the transceiver like the traditional man-machine interface are as reliable as the work of transceivers (ie, car keys) price can it be done with the traditional solutions almost? European luxury car manufacturers have already adopted the enhanced security and privacy features, along with a large Asian OEM manufacturers (Toyota, Nissan, Hyundai, Mazda, as well as large Kivu, etc.) also started in their mass-market car platform used in such PKE system, the situation is changing rapidly. This trend brought about by economies of scale will allow cost-effective PKE system more attractive for end customers, thus ensuring that prices for consumers.
Intelligent passive remote control to open the door automatically (PKE) systems, using two-way communication. Transceiver (the key) the use of three orthogonal placed LC resonance antenna controller command (125 kHz), and through UHF transmitter to send in response.
Figure 2 gives a smart PKE system. Transceiver on the button for the optional, but car doors do not need artificial interference action can be automatically completed. PKE Application of two-way communication sequence is as follows:
(a) the use of 125 KHz frequency controllers send a command; (b) transceiver using three orthogonal array of 125 kHz resonant antenna to receive 125 kHz controller orders; (c) If the order is correct, transceiver via a UHF transmitter to send response (encrypted data); (d) respond to the controller to receive data, if the data is correctly activated switch to open the door. System design engineers the challenge is to decide how to raise the 125 kHz range launch controller orders, thereby ensuring the transceiver battery life long enough to ensure that circumstances reliable operation. The scope of two-way communication requirements of the input sensitivity In battery-powered transceiver applications, UHF signals (315/433/915 MHz) maximum communication distance is about 100 meters, but for low-frequency signals (LF, 125 KHz) are only a few meters. Therefore, the dual-frequency transceiver communications PKE mainly by the 125 KHz controller command to launch the scope of the restrictions. As the low-frequency signal transmission characteristics, 125KHz signal attenuation with the transmission distance rapidly. For example, suppose the antenna controller output voltage of about 300 Vpp, then about three meters from the transceiver to the antenna to receive the voltage is only about 3mVpp, which is almost the level of environmental noise. Weak signal detection system designers are faced with a challenging problem. Some may be in doubt, why not in both directions to achieve the use of UHF two-way communication. The answer to this question is: First of all, in the transceiver to achieve the cost of UHF receivers than 125 kHz detection circuit is higher, and secondly, three-meter distance for the majority of applications PKE enough. 125 kHz to improve the transmission range of the controller commands, there are two possible solutions to consider: To improve the controller's transmission power, or improve the receiver's input sensitivity. However, due to government regulation requirements, transmitter maximum power is limited. Therefore, the assumption that the controller in the extent permitted maximum transmission power, then at this time to raise the input signal detection sensitivity is the only effective solution. In order to achieve three meters away from the two-way communication, receiver's input sensitivity must be reached about 3mVpp.
Plate over the remote control garage door system is to control the use of radio signals through the flip open the way to enhance a new type of automatic garage door system. This article on the market in the existing garage door conducting surveys and research, based on a number of remote control garage door for actuation and control of the way to improve the program, and design methods. In this paper, the remote control garage door of working methods of the analysis and comparison: inverted plate on the garage door remote control to enhance the design of linkage methods, conducted in-depth and meticulous research: a remote control device for a study on the remote control of the working principle and relating to control security on the remote control signal codec issues, conducted a detailed analysis and presentation: design and validate the control circuit logic function of the realization of methods, described the anti-jamming circuit measures: to design a new power to deal with institutions, the use of pure mechanical agencies, to achieve the convenience of electric and manual switching, the completion of the user to operate the various requirements of the portal, the system's ability to respond to special circumstances to be strengthened. Plate over the remote control garage door can be reversed to enhance the correct key is to enhance the linkage design. The traditional design method of time-consuming and laborious, and not easy to duplicate the design parameters is not easy to modify. To this end, the author of the integrated use of MATLAB and ADAMS software, developed a set used in the design of the linkage, intuitive, easy, repeatable, easy to modify the design method to achieve linkage size and location identification, combined with virtual prototyping technology, upgrade the agency to achieve the kinematics and dynamics simulation analysis, and on this basis to optimize the design. Virtual model to simulate the effect of computing are very good.
The program wireless sensor sub-machine using TI's 16-bit single-chip ultra-low power MSP430F2012 as the core, host MSP430F41X used as the core, combined with CC1100 wireless sensors and ultrasonic range finder with the outside world to achieve automotive obstacle detection alarm distance. Ultrasonic Ranging wireless sensor uses lithium battery-powered, on-chip 10-bit ADC in the Timer-A regular testing under the control of the supply voltage, ranging sensor uses popular reality ultrasonic sensor can achieve wide-angle of 60 degrees away from the obstacle detection ; ultrasonic sensors in the MCU through the week under the control of the conversion to level sensor provides up to 100V voltage field around the launch of ultrasonic signals, external obstacles encountered in the ultrasonic sound waves generated reflection, this time to return to being a part of acoustic sensors through external signal amplification transported by low-noise level of side-pass filter, after entering the chip signal waveform acquisition ADC10, interception peak waveform as detected by echo signal point in time, in this process as ultrasonic Timer-A launch to receive back the time difference timer waves through the acoustic propagation velocity of the car, such as calculated by the distance barrier with the outside world; detection distance data transmission in real time through the CC1100 to install indoor driving the host, the distance from the host showed the situation of obstructions; 4 ~ 9 from the real-time detection machine initiative outside obstacles, the real-time, efficient and fast. Host received from the plane sent a distance of obstructions to the public through the voice chip is accurate to 0.1 meters away from the accuracy of alarm given by the drive-chip LCD driver liquid crystal display and battery voltage, such as distance information; external crystal 32.768KHz CPU can be used as the closure of the state of the Basic-Timer clock source, as a system of real-time clock, calendar, accuracy up to 1S / day, could serve as a vehicle to use the clock. The program has a low power consumption, long battery life, small size, convenient and flexible installation, low error rate, high reliability, the system simple combination of characteristics such as wireless sensor reversing radar is the best option. Details Web site: www.lierda.com.
MSP430F2012 characteristics: ※ low operating voltage range: 1.8 ~ 3.6V ※ ultra-low power: Patterns of activity: 200uA @ 1MHZ, 2.2V Standby mode: 0.5uA Power-down mode (RAM data retention mode): 0.1uA ※ five power-saving mode ※ wake up from standby mode does not exceed 1us ※ 16 bit RISC Reduced Instruction system, 62.5ns instruction cycle ※ 2 zones capture / compare register 16 regular Timer-A ※ USI support for Universal Serial Interface SPI, I2C interface ※ 10-BIT, 200KSPS, A / D converter
MSP430F413 characteristics: ※ low operating voltage range: 1.8 ~ 3.6V ※ Flash Capacity: 4 ~ 32K ※ ultra-low power: Patterns of activity: 200uA @ 1MHZ, 2.2V Standby mode: 0.7uA Power-down mode (RAM data retention mode): 0.1uA ※ five power-saving mode ※ wake up from standby mode does not exceed 6us ※ 16 bit RISC Reduced Instruction system, 62.5ns instruction cycle ※ 3 zones capture / compare register 16 regular Timer-A ※ LCD controller / driver (up to 96) ※ chip comparators, can be used for analog signal can be used for comparison or hypotenuse A / D conversion
TPMS common market program by three leading chip supplier: ge, infineon and freescale. ge TPMS company in the field by virtue of its 10 years design experience, making it the one of the leaders in the field. Its development npx2 contains pressure Temperature, acceleration and battery voltage four sensors, the platform-based TPMS system more compact, energy-saving, stable, while reducing the sensor module Block size and weight. 1995, ge universal novasensor on the provision of pressure sensors to the TPMS system. To date, shipments of more than 10 million, statistics it does not Yield only parts per million (1ppm). Its shipment to customers such as schrader, smartire, trw, lear, such as first-line companies are. From 2004 The beginning, ge generic second-generation tire pressure sensor NPX begun shipping. The integration of pressure, temperature sensors, and one 8-bit risc mcu. Also introduced the same year npx ii, and npx i compared, npx ii addition to all the features npxi, another integrated inertial sensors, can withstand 5000g acceleration. 2006, ge Universal will launch npx iii. npx iii has npx ii all the features, but also to rf launch with a single integrated circuit chip side Case. TPMS existing programs will bring a breakthrough.
Technical information
