CN201881971U - Automobile speed limiting alarm device based on CAN (controller area network) transmission - Google Patents
Automobile speed limiting alarm device based on CAN (controller area network) transmission Download PDFInfo
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- CN201881971U CN201881971U CN2010205897326U CN201020589732U CN201881971U CN 201881971 U CN201881971 U CN 201881971U CN 2010205897326 U CN2010205897326 U CN 2010205897326U CN 201020589732 U CN201020589732 U CN 201020589732U CN 201881971 U CN201881971 U CN 201881971U
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Abstract
The utility model provides an automobile speed limiting alarm device based on CAN (controller area network) transmission, which belongs to the field of an automobile speed limiting device. In the technical scheme, the automobile speed limiting alarm device comprises a sensor, a signal processing circuit, a speed limiting processing module and a speed setting device, the sensor is connected with the input end of the signal processing circuit, the output end of the signal processing circuit is connected with the speed limiting processing module through a CAN bus, the speed limiting processing module is connected with the speed setting device through a CAN bus and is also connected with an engine management system, and the output end of the speed setting device is connected with an alarm display device. The utility model solves the problems that the automobile speed limiting alarm can easily malfunction and key structures can be easily damaged and has the beneficial effect that: the automobile speed limiting alarm device has a simple structure and a low cost. The automobile speed limiting alarm device can accurately judge the overspeed of an automobile, rapidly utter an overspeed alarm, and promptly and reliably achieve automatic speed limiting for the overspeed of the automobile.
Description
Technical field
The utility model relates to a kind of automobile speed limit device, especially relates to the overspeed alarming in a kind of running car and the timely device of speed limit.
Background technology
Along with the raising and the development of science and technology, automotive performance also improves constantly, and automobile design speed is more and more faster.Owing to be subjected to the restriction of road and environment during automobile is advanced, need different speed in different travels down, to guarantee the safety of traffic participant.This just needs a kind of device, and in a single day automobile surpasses the speed that qualification is set under steam, just can constantly remind navigating mate to slow down, if the untimely adequate measures of taking of navigating mate are slowed down, this device will be reduced to the speed that qualification is set with the speed of a motor vehicle automatically.Chinese patent notification number CN201449394U, date of declaration on May 5th, 2010, name is called the utility model patent of " a kind of automobile speed limit warning device ", disclose a kind of automobile speed limit warning device, it is become by digital speedometter, speed of a motor vehicle initialization circuit, speed of a motor vehicle testing circuit and warning speed limit circuit bank; Wherein speed of a motor vehicle initialization circuit is connected with digital speedometter, test car speed circuit and digital speedometter carry out data communication, executive command is passed on by warning speed limit circuit, by speed of a motor vehicle testing circuit detected speed of a motor vehicle numerical value is compared with speed of a motor vehicle initialization circuit preset data value, exceed then and to report to the police and the speed of a motor vehicle is controlled in the preset vehicle speed.Three code switchs and the digital speedometter of the speed of a motor vehicle initialization circuit of automobile speed limit warning device join, when having only digital identical that the numeral that shows when digital speedometter and code switch preset, three code switch ability while output low levels are given 4023 chips, the joint denial gate output high level of 4023 chips makes continuous diode saturation conduction, control relay open contact closure, short circuit car acceleration system, alarming horn sends chimes of doom simultaneously.When automobile acceleration fast, the violent step on the accelerator of acceleration personnel, the digital speed of digital speedometter demonstration at this moment can surpass the warning speed limit, and this automobile speed limit warning device will be reported to the police and short circuit car acceleration system comes speed limit, causes automobile to raise speed fast.Simultaneously,, cause relay contact adhesive and release continually, damage easily owing to reach speed limit by the adhesive short circuit car acceleration system of control relay open contact.
Summary of the invention
In order to solve the damageable problem of automobile speed limit warning misoperation and key structure, the utility model provides a kind of automobile speed limit warning device based on the CAN transmission, reach simple in structure, overspeed of vehicle is judged accurately, speed limit is reported to the police in time, the rapid and reliable purpose of speed limit.
The technical solution of the utility model is: a kind of automobile speed limit warning device based on the CAN transmission, comprise sensor, signal processing circuit, the speed limit processing module, the speed of a motor vehicle is provided with device, the sensor of gathering four vehicle wheel rotational speeds of automobile links to each other with the input end of signal processing circuit, the mouth of signal processing circuit links to each other with a PORT COM of speed limit processing module by automobile CAN-bus, another PORT COM of speed limit processing module links to each other by the PORT COM that the automobile CAN-bus and the speed of a motor vehicle are provided with device, the speed limit processing module also is connected with the engine management system module, and the mouth that the speed of a motor vehicle is provided with device is connected with the alarm display device.The rotating speed of four wheels of automobile, by the sensor acquisition that automobile is provided with, sensor acquisition to signal be transferred to the signal processing circuit that automobile is provided with, signal processing circuit sends by the automobile CAN-bus broadcast type.The speed of a motor vehicle is provided with device and gives speed limit processing module with data-signal by the CAN bus transfer with the speed limit that is provided with.The speed limit processing module is provided with speed limit relatively with what the real-time speed of a motor vehicle of measured automobile and the speed of a motor vehicle were provided with that module provides, when the real-time speed of a motor vehicle when speed limit is set, the speed limit processing module outputs signal to the engine management system module and screens, if the engine management system module judges that automobile does not belong to hypervelocity, the engine management system module is not taked speed limit; If the engine management system module is judged overspeed of vehicle, the engine management system module is taked the deceleration measure on the one hand, and the message feedback that on the one hand speed of a motor vehicle is judged to be hypervelocity is given the speed limit processing module.The speed limit processing module is exported to the alarm display device after with the overspeed of vehicle signal conditioning, the alarm display device prompting navigating mate that gives the alarm.The equipment that the sensor of automobile speed limit warning device, signal processing circuit and engine management system module and automobile are equipped with share saving cost simple in structure.By the automobile CAN-bus transmission signals not only soon but also reliable, speed limit and reporting to the police has in time reduced wire harness, saves cost.Overspeed of vehicle is screened through the engine management system module after judging by the speed limit processing module again, the hypervelocity accuracy of judgement.
As preferably, the speed limit processing module is integrated in the engine management system module, and engine management system module model is MC9S12XHZ512.Speed limit processing module that the engine management system module is integrated, saving cost simple in structure.
As preferably, the speed of a motor vehicle is provided with device and is provided with that the speed of a motor vehicle is provided with module, speed limit is provided with switch and function activation switch, it is the MC9S08DZ60 chip that the speed of a motor vehicle is provided with module, the speed of a motor vehicle is provided with module and links to each other with the automobile CAN-bus transceiver by PORT COM, speed limit is provided with switch and with the speed of a motor vehicle module is set by the RTC real-time counter module in the MC9S08DZ60 chip with the function activation switch and links to each other, and the speed of a motor vehicle is provided with the I/O mouth of module by the MC9S08DZ60 chip and links to each other with the alarm display device.Regulate speed limit the speed that switch is provided with needs qualification is set, the closing function activator switch can shield speed limit alarm device.It is simple, easy to adjust that speed limit is provided with.Speed limit alarm device can be selected to use on demand, and utilization flexibly.
As preferably, the back mirror telltale that alarm display device and automobile are equipped with share; The speed of a motor vehicle shows signal that the speed of a motor vehicle is provided with module output inputs to the back mirror read-out, and the overspeed alarming aud. snl. that the speed of a motor vehicle is provided with module output inputs to the loudspeaker in the back mirror telltale, does not increase equipment, saves cost.
Compared with prior art, the utility model beneficial effect is: saving cost simple in structure.Overspeed of vehicle is judged accurately, overspeed alarming is fast, hypervelocity back automatic speed-limiting is in time reliable.
Description of drawings
Accompanying drawing 1 is a block scheme of the present utility model;
Accompanying drawing 2 is the utility model speed limit processing module and engine management system module frame chart;
Accompanying drawing 3 is provided with the device block diagram for the utility model speed of a motor vehicle;
Accompanying drawing 4 is the utility model control flow chart.
The specific embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment 1:
As shown in Figure 1, a kind of automobile speed limit warning device based on the CAN transmission, the input end of sensor 1 links to each other with the speed measuring device of four wheels of automobile, the mouth of sensor 1 links to each other with the input end of signal processing circuit 2, and signal processing circuit 2 hangs on the automobile CAN-bus as a node of automobile CAN-bus.Sensor 1 and signal processing circuit 2 are share (not shown) with the equipment that automobile is equipped with.Speed limit processing module 3 is integrated in (see figure 2) in the engine management system module 6, and the engine management system module 6 that is integrated with speed limit processing module 3 hangs on the automobile CAN-bus as a node of automobile CAN-bus.Speed limit processing module 3 is provided with device 4 by the automobile CAN-bus and the speed of a motor vehicle and links to each other, and the mouth that the speed of a motor vehicle is provided with device 4 is connected with alarm display device 5.
As shown in Figure 2, speed limit processing module 3 is integrated in the engine management system module 6, and engine management system module 6 is provided with MC9S12XHZ512 master chip 61, PWM module 62, ECT module 63, A/D module 64.Speed limit processing module 3 and engine management system 6 shared master chips 61.Master chip 61 is connected with vehicle electronics throttle gate 9 by PWM module 61; Master chip 61 is connected with fuel injector 8 with automobile ignition coil 7 respectively by ECT module 63; Master chip 61 is connected with electronic accelerator pedal of automobile 10 by A/D module 64.Engine management system module 6 is connected with automobile CAN-bus by DDRM/PTM interface (CAN PORT COM).
As shown in Figure 3, the speed of a motor vehicle is provided with device 4 and is provided with that the speed of a motor vehicle is provided with module 41, speed limit is provided with switch 42 and function activation switch 43, and the speed of a motor vehicle is provided with module 41 and is the MC9S08DZ60 chip.Speed limit is provided with switch 42 and function activation switch 43 and by the speed of a motor vehicle RTC real-time counter modules in the module 41 is set respectively and with the speed of a motor vehicle module 41 is set and is connected.The speed of a motor vehicle is provided with module 41 and is connected with automobile CAN-bus by PORT interface (CAN PORT COM).
As shown in Figure 4, automobile key inserts key hole, gets to the ON shelves, and system initialization also reads and preserved speed limit last time, and system is in wait state.When the automotive ignition success, on the one hand, sensor 1 is gathered four vehicle wheel rotational speeds, and the signal of collection is handled back broadcast type issue on automobile CAN-bus through signal processing circuit 2.On the other hand, system judges whether the speed limit function is activated, if function activation switch 43 is in closed condition, system does not work and is in readiness for action; If function activation switch 43 is in opening, system further judges whether new speed limit is set, if there is not new speed limit, system will preserve speed limit input speed limit processing module 3 last time; If speed limit is reset, system is with the speed limit input speed limit processing module 3 of new settings.Speed limit processing module 3 is integrated in the engine management system module 6, and engine management system module 6 hangs on the CAN bus as a node on the automobile CAN-bus.The wheel velocity that 3 pairs of sensors of speed limit processing module 1 are gathered and the speed limit of system's setting compare: if the speed of a motor vehicle is lower than speed limit, system does not report to the police; If the speed of a motor vehicle is higher than speed limit greatly, system has judged whether the renewal speed limit again.If Velocity Updating is arranged, by the speed speed limit newly is set, the speed of a motor vehicle is lower than the speed speed limit newly is set, and system does not report to the police; If the speed of a motor vehicle is greater than newly being provided with the speed speed limit, speed limit processing module 3 sends information to engine management system module 6.Engine management system module 6 is provided with: when actual vehicle speed surpasses 10% of the setting speed of a motor vehicle is to surpass speed limit.If engine management system module 6 is judged actual vehicle speed and is given speed limit processing module 3 for not exceeding the speed limit with message feedback.Speed limit processing module 3 is not reported to the police.If engine management system module 6 is judged actual vehicle speed and is hypervelocity, then engine management system module 6 is taken measures: the aperture that reduces the aperture of electronic throttle 9, the fuel charge of restriction fuel injector 8, the point of ignition of adjusting high-tension coil 7 and restriction efp 10, drop in the speed limit until car speed, engine management system module 6 is just removed the speed limit measure.When engine management system module 6 takes to slow down measure, speed limit processing module 3 information transfer that will exceed the speed limit is provided with module 41 to the speed of a motor vehicle, the speed of a motor vehicle is provided with module 41 and will exceeds the speed limit and export to alarm display device 5 after the information processing, alarm display device 5 will be presented in the back mirror telltale above the speed of restriction, alarm display device 5 is play overspeed alarming sound in loudspeaker,, in qualification speed, remove and report to the police until car deceleration.
Claims (4)
1. automobile speed limit warning device based on CAN transmission, comprise sensor (1), signal processing circuit (2), speed limit processing module (3), the speed of a motor vehicle is provided with device (4), it is characterized in that: the sensor (1) of gathering four vehicle wheel rotational speeds of automobile links to each other with the input end of described signal processing circuit (2), the mouth of described signal processing circuit (2) links to each other with a PORT COM of described speed limit processing module (3) by automobile CAN-bus, another PORT COM of described speed limit processing module (3) links to each other by the PORT COM that the automobile CAN-bus and the described speed of a motor vehicle are provided with device (4), described speed limit processing module (3) also is connected with engine management system module (6), and the mouth that the described speed of a motor vehicle is provided with device (4) is connected with alarm display device (5).
2. the automobile speed limit warning device based on the CAN transmission according to claim 1, it is characterized in that: described speed limit processing module (3) is integrated in the described engine management system module (6), and engine management system module (6) model is MC9S12XHZ512.
3. the automobile speed limit warning device based on the CAN transmission according to claim 1, it is characterized in that: the described speed of a motor vehicle is provided with device (4) and the speed of a motor vehicle is set module (41) is set, speed limit is provided with switch (42) and function activation switch (43), the described speed of a motor vehicle is provided with module (41) and is the MC9S08DZ60 chip, the speed of a motor vehicle is provided with module (41) and links to each other with the automobile CAN-bus transceiver by PORT COM, speed limit is provided with switch (42) and by the RTC real-time counter module in the MC9S08DZ60 chip and the described speed of a motor vehicle module (41) is set with function activation switch (43) and links to each other, and the described speed of a motor vehicle is provided with the I/O mouth of module (41) by the MC9S08DZ60 chip and links to each other with described alarm display device (5).
4. the automobile speed limit warning device based on the CAN transmission according to claim 1 is characterized in that: described alarm display device (5) share with the back mirror telltale that automobile is equipped with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205897326U CN201881971U (en) | 2010-11-04 | 2010-11-04 | Automobile speed limiting alarm device based on CAN (controller area network) transmission |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205897326U CN201881971U (en) | 2010-11-04 | 2010-11-04 | Automobile speed limiting alarm device based on CAN (controller area network) transmission |
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| CN201881971U true CN201881971U (en) | 2011-06-29 |
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| CN2010205897326U Expired - Fee Related CN201881971U (en) | 2010-11-04 | 2010-11-04 | Automobile speed limiting alarm device based on CAN (controller area network) transmission |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102529809A (en) * | 2012-02-24 | 2012-07-04 | 奇瑞汽车股份有限公司 | Speed-limiting device of vehicle and speed-limiting method thereof |
| CN103085664A (en) * | 2013-01-18 | 2013-05-08 | 浙江吉利汽车研究院有限公司杭州分公司 | System and method for automatically limiting vehicle speed |
| CN103362678A (en) * | 2013-06-03 | 2013-10-23 | 湖北三江航天万峰科技发展有限公司 | Automatic control device of diesel engine |
| CN104890516A (en) * | 2015-06-17 | 2015-09-09 | 安庆师范学院 | Automobile speed limiting device |
| CN106515449A (en) * | 2016-11-28 | 2017-03-22 | 奇瑞汽车股份有限公司 | Vehicle speed limit system having active speed limit function and method |
| CN107640063A (en) * | 2017-09-19 | 2018-01-30 | 合肥凯利科技投资有限公司 | A kind of controller for electric vehicle with speed per hour prompting function |
| CN107878196A (en) * | 2017-11-08 | 2018-04-06 | 中科院合肥技术创新工程院 | A kind of automobile active overrunning governor |
-
2010
- 2010-11-04 CN CN2010205897326U patent/CN201881971U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102529809A (en) * | 2012-02-24 | 2012-07-04 | 奇瑞汽车股份有限公司 | Speed-limiting device of vehicle and speed-limiting method thereof |
| CN103085664A (en) * | 2013-01-18 | 2013-05-08 | 浙江吉利汽车研究院有限公司杭州分公司 | System and method for automatically limiting vehicle speed |
| CN103085664B (en) * | 2013-01-18 | 2016-05-25 | 浙江吉利汽车研究院有限公司杭州分公司 | A kind of speed of a motor vehicle volitional check system and method |
| CN103362678A (en) * | 2013-06-03 | 2013-10-23 | 湖北三江航天万峰科技发展有限公司 | Automatic control device of diesel engine |
| CN103362678B (en) * | 2013-06-03 | 2017-04-12 | 湖北三江航天万峰科技发展有限公司 | Automatic control device of diesel engine |
| CN104890516A (en) * | 2015-06-17 | 2015-09-09 | 安庆师范学院 | Automobile speed limiting device |
| CN106515449A (en) * | 2016-11-28 | 2017-03-22 | 奇瑞汽车股份有限公司 | Vehicle speed limit system having active speed limit function and method |
| CN107640063A (en) * | 2017-09-19 | 2018-01-30 | 合肥凯利科技投资有限公司 | A kind of controller for electric vehicle with speed per hour prompting function |
| CN107878196A (en) * | 2017-11-08 | 2018-04-06 | 中科院合肥技术创新工程院 | A kind of automobile active overrunning governor |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 317000 east gate of Taizhou City, Guangdong Province Co-patentee after: Zhejiang Geely Holding Group Co., Ltd. Patentee after: Zhejiang Geely Automobile Research Institute Co., Ltd. Address before: 317000, No. 188, Century Avenue, Linjiang Industrial Park, Xiaoshan District, Zhejiang, Hangzhou Co-patentee before: Zhejiang Geely Holding Group Co., Ltd. Patentee before: Zhejiang Geely Automobile Research Institute Co., Ltd. |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110629 Termination date: 20131104 |