CN104240501A - Remote automobile running gesture detecting system based on wireless communication technology - Google Patents
Remote automobile running gesture detecting system based on wireless communication technology Download PDFInfo
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- CN104240501A CN104240501A CN201410425240.6A CN201410425240A CN104240501A CN 104240501 A CN104240501 A CN 104240501A CN 201410425240 A CN201410425240 A CN 201410425240A CN 104240501 A CN104240501 A CN 104240501A
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Abstract
The invention provides a remote automobile running gesture detecting system based on a wireless communication technology. The remote automobile running gesture detecting system comprises an embedded gesture detecting module based on an MEMS inertia device, and a wireless communication module based on the GPRS. The system relates to the fields of the wireless communication technology, the electronic technology, the inertial navigation technology, the digital signal processing technology and the Internet of Things. According to the remote automobile running gesture detecting system based on the wireless communication technology, the GPRS communication technology is adopted, the gesture data in the automobile running process can be collected by the system in real time and are uploaded to a monitoring center through a GPRS network, automatic remote data transmission is achieved, and users can check the automobile running state in real time through the monitoring center. When the GPRS network is jammed, the system is automatically switched into an SMS mode to conduct data transmission. The automobile running gestures are collected through an embedded system platform, an ARM and a CPLD serve as control cores of the platform, and the gesture data of automobiles in the running process are collected by relying on the MEMS inertia device.
Description
Technical field
The present invention relates to wireless communication technique, electronic technology, inertial navigation technique, Digital Signal Processing and Internet of Things field, refer more particularly to the knowledge of GPRS wireless communication technique and the attitude detection technical elements based on MEMS inertia device.
Background technology
In recent years, rapidly, highway construction becomes better and approaching perfection day by day, and traffic transport industry also develops rapidly in Domestic Automotive Industry development.But along with the fast development of communications and transportation, motor traffic accidents is also in continuous increase.The driving safety of automobile has become the problem that people extremely pay close attention to.Along with automotive average travel speed is more and more higher, especially the problem of lateral stability in traffic safety is more and more outstanding for stability of automobile.In vehicle traveling process, the traveling attitude of real-time detection automobile, feeds back to driver and remote monitoring center, not only helps avoid the generation of vehicle side turning situation, and when mishap occurs, Surveillance center can find and contact rescue the very first time.
Along with the development of MEMS (micro electro mechanical system) (MEMS) technology, its sensor application is adopted to become ripe to the condition in attitude detection system.Based on MEMS technology acceleration transducer and gyroscope has strong shock resistance, reliability is high, the life-span is long, low cost and other advantages, that to be suitable for building the inertial sensor of attitude detection system current, running car attitude parameter is generally gathered by gyroscope, but gyrostatic physical construction easily produces systematic error and is difficult to eliminate, also there is the attitude parameter being calculated automobile by multiple acceleration transducer strapdown, there is the shortcoming that system complex cost is high like this.
And in wireless telecommunications, when network congestion, system cannot connect GPRS network, the data of collection can not send, and produce packet loss.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, and provide a kind of remote automobile based on wireless communication technique to travel attitude detection system, the liquid crystal display in driver front can show optimal estimation attitude angle, be uploaded to Surveillance center simultaneously, when calculate to attitude angle be greater than early warning value time, detection system can send alerting signal, and driver notes driving safety.
Based on above-mentioned purpose, the invention provides following technical scheme:
A kind of remote automobile of base wireless communication technique travels attitude detection system, this system mainly comprises embedded attitude detection module and wireless communication module, wherein: embedded attitude detection module adopts ARM and CPLD as control core, use the attitude data in MEMS inertia device collection running car, wireless communication module adopts GPRS as data transmission network, detection system also with LCD MODULE and matrix keyboard module, to realize human-computer interaction function.
The remote automobile of described a kind of base wireless communication technique travels attitude detection system, it is characterized in that: attitude during system meeting real-time detection running car and geographical location information, driver is fed back to by LCD, be uploaded to Surveillance center by GPRS module simultaneously, system automatically detects automobile and whether exception occurs, and judge extremely as rollover accident still occurs for early warning information, fault, when producing fault and rollover accident, abnormal information and location of accident information are sent to Surveillance center by system, request rescue.
The remote automobile of described a kind of base wireless communication technique travels attitude detection system, it is characterized in that: adopt ARM and CPLD as control core, ARM adopts the STM32F103ZET6 of ST company, CPLD adopts the EPM570T100I5 of altera corp, CPLD is articulated on the FSMC interface of ARM, both realizations communication.
The remote automobile of described a kind of base wireless communication technique travels attitude detection system, it is characterized in that: adopt the attitude data in accelerometer and gyroscope collection running car, accelerometer adopts the MMA7361L of Freescale company, gyroscope adopts the L3G462 of ST company, AD conversion chip adopts the ADS8364 of TI company, CPLD is sampled by control ADS8364, realizes the high speed acquisition of attitude signal.
The remote automobile of described a kind of base wireless communication technique travels attitude detection system, it is characterized in that: CPLD adopts smothing filtering algorithm to carry out noise reduction process to data, ARM adopts kalman filter method to carry out software filtering to data, and data fusion and error correction are carried out to signal, obtain automobile optimal estimation attitude angle.
The remote automobile of described a kind of base wireless communication technique travels attitude detection system, it is characterized in that: adopt SIM900 type GPRS module, realize geographic position by GPRS module to determine and information remote transmission, when GPRS network gets congestion, system adopts SMS mode to carry out data transmission.
The remote automobile of described a kind of base wireless communication technique travels attitude detection system, it is characterized in that: with LCD MODULE and matrix keyboard module, be configured GPRS by matrix keyboard, by liquid crystal display attitude, position and failure message.
According to specific embodiment provided by the invention, the invention discloses following technique effect:
After adopting the present invention, first to be arranged GPRS module by matrix keyboard before use, after system and Surveillance center connect, liquid crystal display can show connection signal.In vehicle traveling process, the attitude data in the detection vehicle traveling process that system can be real-time, and optimal estimation attitude angle is presented on the liquid crystal display in driver front, be uploaded to Surveillance center simultaneously.When calculate to attitude angle be greater than early warning value time, detection system can send alerting signal, and driver notes driving safety.When calculate to attitude angle be greater than fault value time, expression is broken down, and failure message is fed back to Surveillance center by system.When calculate to attitude angle be greater than rollover value time, expression accident occur, detection system can send an SOS to Surveillance center.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is that remote automobile travels attitude detection system module composition;
Fig. 2 is running car attitude information processing scheme;
Fig. 3 is CPLD inner workings block diagram;
Fig. 4 is the inner attitude algorithm structured flowchart of ARM;
Fig. 5 is ARM internal fault analysis and remote transmission block diagram;
Description of reference numerals: 1 is attitude induction module, 2 key control units, 3GPRS module.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The present invention is that a kind of remote automobile of base wireless communication technique travels its system module of attitude detection system composition as shown in Figure 1.System can be divided into embedded attitude detection module and wireless communication module.Embedded attitude detection module comprises attitude induction module and kernel control module, wireless communication module and GPRS module.Attitude induction module is made up of MEMS inertia device, signal conditioning circuit and A/D convertor circuit.Wherein MEME inertia device adopts MMA7361L accelerometer and L3G462 gyroscope.A/D convertor circuit core is one piece of Hexamermis spp ultra high speed A/D conversion chip ADS8364.Kernel control module is made up of ARM, CPLD, LCD matrix keyboard and FLASH.ARM and CPLD is as Systematical control core, and ARM adopts the STM32F103ZET6 of ST company, and CPLD adopts the EPM570T100I5 of altera corp.Matrix keyboard is used for the input of GPRS module configuration information and controls liquid crystal display page turning.FLASH is for preserving the abnormal information such as position and attitude information and early warning, fault, rollover in traveling.Adopt SIM900 type GPRS module, realize position, status by GPRS module and determine and information remote transmission.When GPRS network gets congestion, system will be automatically converted to SMS mode and carry out data transmission.
Remote automobile travels detection and the transmission that its core of attitude detection system is running car attitude.The processing scheme of attitude information as shown in Figure 2.First need to use signal conditioning circuit to carry out noise filtering to the simulating signal that MEMS inertia device exports, signal conditioning circuit adopts second order Butterworth filter.Filtered signal carries out data processing by delivering to key control unit after AD conversion, and key control unit needs, to the smoothing filtering of signal, to carry out noise reduction again.Then Kalman filtering is adopted to carry out secondary treating.Finally data fusion and conversion are carried out to the three axis accelerometer signal after process and three-axis gyroscope signal, obtain optimal estimation attitude angle.
Remote automobile travels the specific implementation of attitude detection system as shown in Fig. 3, Fig. 4 and Fig. 5.Fig. 3 is CPLD inner workings block diagram.CPLD is articulated on the FSMC interface of ARM, by parallel mode communication.ARM carries out addressing by address wire to CPLD, then transmits data, and control CPLD samples, and carries out data transmission.CPLD also can by data line to ARM feedback operation state.Control line between ARM and CPLD has three.CE: control ARM chooses CPLD, RE: control ARM reads data in CPLD, WE: control ARM writes data in CPLD.ARM timing sends sampled signal to CPLD, and CPLD carries out 20 samplings continuously after receiving sampled signal, and carries out smothing filtering.Then by filter value by bus transfer in ARM, be further processed.
Fig. 4 is the inner attitude algorithm structured flowchart of ARM.After ARM receives the signal of FSMC interface transmission, first data decode will be carried out, obtain three axis accelerometer signal and three-axis gyroscope signal respectively, then deliver to filter unit and carry out Kalman filtering, finally deliver to attitude conversion unit and carry out data fusion and process obtains optimal estimation attitude angle.Optimal estimation attitude angle is fed back to driver by LCD display by ARM, optimum attitude angular data is saved in FLASH simultaneously.
Fig. 5 is ARM internal fault analysis and remote transmission block diagram.Be sent to fault analysis unit after obtaining optimal estimation attitude angle, judge whether abnormal information occurs.Abnormal information is divided three classes: early warning information, failure message and rollover information.During prediction occurring information, system can feed back to driver, and Accident prevention occurs to make it note.When break down information time, system can analyzing failure cause feed back to driver, failure message and geographical location information also can upload to Surveillance center, Surveillance center can according to actual conditions determine whether rescue, driver also initiatively can send SOS.When there is rollover information, represent and major accident occurs, rollover information and geographical location information can upload to Surveillance center, and Surveillance center's emergency contact rescue, rollover information has the highest information transmission priority.
ARM is by serial ports and GPRS module communication.During start, ARM carries out initialization to GPRS module, the serial port baud rate, server ip, heart time etc. of configuration module.Driver also resets remote server IP address by matrix keyboard.When producing failure message, ARM is by information by the packing of certain form, and by Serial Port Transmission to GPRS module, GPRS module uploads onto the server according to Transmission Control Protocol.Detection system is also integrated with one piece of FLASH chip, for the failure message of the data and generation that store Real-time Collection.When carrying out Wireless Data Transmission, in order to prevent blocking up the situation occurring that data cannot be transmitted due to GPRS network.When GPRS module cannot connect GPRS network, be converted to SMS transmission, prevent data packetloss.
Claims (7)
1. the remote automobile of a base wireless communication technique travels attitude detection system, this system mainly comprises embedded attitude detection module and wireless communication module, wherein: embedded attitude detection module adopts ARM and CPLD as control core, use the attitude data in MEMS inertia device collection running car, wireless communication module adopts GPRS as data transmission network, detection system also with LCD MODULE and matrix keyboard module, to realize human-computer interaction function.
2. the remote automobile of a kind of base wireless communication technique according to claim 1 travels attitude detection system, it is characterized in that: attitude during system meeting real-time detection running car and geographical location information, driver is fed back to by LCD, be uploaded to Surveillance center by GPRS module simultaneously, system automatically detects automobile and whether exception occurs, and judge extremely as rollover accident still occurs for early warning information, fault, when producing fault and rollover accident, abnormal information and location of accident information are sent to Surveillance center by system, request rescue.
3. the remote automobile of a kind of base wireless communication technique according to claim 1 travels attitude detection system, it is characterized in that: adopt ARM and CPLD as control core, ARM adopts the STM32F103ZET6 of ST company, CPLD adopts the EPM570T100I5 of altera corp, CPLD is articulated on the FSMC interface of ARM, both realizations communication.
4. the remote automobile of a kind of base wireless communication technique according to claim 1 travels attitude detection system, it is characterized in that: adopt the attitude data in accelerometer and gyroscope collection running car, accelerometer adopts the MMA7361L of Freescale company, gyroscope adopts the L3G462 of ST company, AD conversion chip adopts the ADS8364 of TI company, CPLD is sampled by control ADS8364, realizes the high speed acquisition of attitude signal.
5. the remote automobile of a kind of base wireless communication technique according to claim 1 travels attitude detection system, it is characterized in that: CPLD adopts smothing filtering algorithm to carry out noise reduction process to data, ARM adopts kalman filter method to carry out software filtering to data, and data fusion and error correction are carried out to signal, obtain automobile optimal estimation attitude angle.
6. the remote automobile of a kind of base wireless communication technique according to claim 1 travels attitude detection system, it is characterized in that: adopt SIM900 type GPRS module, realize geographic position by GPRS module to determine and information remote transmission, when GPRS network gets congestion, system adopts SMS mode to carry out data transmission.
7. the remote automobile of a kind of base wireless communication technique according to claim 1 travels attitude detection system, it is characterized in that: with LCD MODULE and matrix keyboard module, by matrix keyboard, GPRS is configured, by liquid crystal display attitude, position and failure message.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105353710A (en) * | 2015-12-09 | 2016-02-24 | 江苏天安智联科技股份有限公司 | Vehicle condition intelligent monitoring system based on vehicle rollover monitoring |
| CN105786182A (en) * | 2016-02-26 | 2016-07-20 | 深圳还是威健康科技有限公司 | Method and device for controlling periphery devices based on gesture |
| CN105848309A (en) * | 2016-03-23 | 2016-08-10 | 安徽京师方圆信息技术有限公司 | GPRS data terminal for field remote communication |
| CN110843766A (en) * | 2019-10-31 | 2020-02-28 | 泰斗微电子科技有限公司 | Vehicle attitude detection method, device, vehicle-mounted terminal, vehicle and medium |
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| CN110843766B (en) * | 2019-10-31 | 2021-07-13 | 泰斗微电子科技有限公司 | Vehicle attitude detection method, device, vehicle-mounted terminal, vehicle and medium |
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Application publication date: 20141224 |