CN202976239U - Vehicle driving state recording instrument - Google Patents
Vehicle driving state recording instrument Download PDFInfo
- Publication number
- CN202976239U CN202976239U CN 201220565269 CN201220565269U CN202976239U CN 202976239 U CN202976239 U CN 202976239U CN 201220565269 CN201220565269 CN 201220565269 CN 201220565269 U CN201220565269 U CN 201220565269U CN 202976239 U CN202976239 U CN 202976239U
- Authority
- CN
- China
- Prior art keywords
- signal
- master controller
- microprocessor
- interface
- running state
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Traffic Control Systems (AREA)
- Time Recorders, Dirve Recorders, Access Control (AREA)
Abstract
The utility model provides a vehicle driving state recording instrument, and belongs to the technical field of automotive electronics. The vehicle driving state recording instrument solves the problem that vehicle operation safety state information can not be monitored in real time in the prior art. The device comprises a signal acquisition module and a main controller, wherein the signal acquisition module is used for acquiring a vehicle driving property state signal; the main controller receives vehicle driving property state data at equal time intervals being least 2 seconds and stores the vehicle driving property state data in real time by taking one time interval as a storage unit, and the main controller comprises a signal receiving module, a microprocessor and a storage unit; the signal acquisition module is connected with the main controller through the signal receiving module; the microprocessor processes the vehicle driving property state signal; temporary storage and permanent storage can be respectively carried out on the vehicle driving property state signal by the storage unit, and the storage unit and the signal receiving module are respectively connected with the microprocessor; and the microprocessor is also connected with a pulse counting module. The device provided by the utility model can be used for recording and storing the state information related to vehicle operation safety in real time.
Description
Technical field
The utility model belongs to technical field of automotive electronics, relates to a kind of vehicle running state registering instrument.
Background technology
Along with the raising of living standards of the people, the recoverable amount of automobile also increases gradually, causes the generation cumulative year after year of traffic hazard.After accident occurs, for the evaluation of motor-vehicle accident reason, be a very difficult thing, the place of road monitoring particularly is not set at some, the traffic police is difficult to the reason that the discriminating accident causes, and causes and can not deal with problems timely.Know the reason that automobile travel conditions at that time can well help traffic police's discriminating accident to cause.
For this reason, it is 201010573097.7 a kind of car accident early warning and information recorder that Chinese patent literature discloses application number, adopt between the microprocessor of this device and accelerometer, inclinometer, video acquisition module, sound collection module, GRS module, memory module and gsm module and be electrically connected to, microprocessor also with between a quick wake module and independent electric power supply adopts and is electrically connected to, and wake module comprises that an impact switch that occurs for detection of collision accident and one detect the switch of inclination that the upset accident occurs fast; In vehicle normality driving process, microprocessor is in dormant state, when impact switch detects predefined acceleration dangerous values or switch of inclination and predefined inclination angle hazard threshold detected, microprocessor finishes dormant state at once, send early warning and the relevant operation of prompting to the driver, open rapidly simultaneously accelerometer, inclinometer, video acquisition module, sound collection module and memory module, information to Vehicle Driving Cycle is carried out record, and open GPS module and gsm module, location at risk and institute's canned data are wirelessly transmitted to the main frame of far-end; After accident finished, wake module resetted fast, and microprocessor enters dormant state again.This patent can realize sending early warning and record the state of automobile at that time when accident occurs.
The state that travels of automobile when although this device can the recording traffic accident occurs, the state in can not the Real-Time Monitoring Vehicle Driving Cycle still exists the status item of Vehicle Driving Cycle of certain hidden danger and this device record comprehensive not.
Summary of the invention
There are the problems referred to above in the utility model for existing technology, has proposed a kind of vehicle running state registering instrument, and this vehicle running state registering instrument is real time record and the correlation behavior information that stores pass vehicle security of operation efficiently.
the utility model is realized by following technical proposal: a kind of vehicle running state registering instrument, comprise the signal acquisition module for collection vehicle rideability status signal, it is characterized in that, this device also includes at least 2 seconds and receives road holding status signal data and carry out the master controller of real-time storage data take a time period as a storage cell, described master controller includes the signal receiving module that receives the road holding status signal, described signal acquisition module is connected with master controller by the signal receiving module of master controller, described master controller also includes the microprocessor that the road holding status signal is processed and the road holding status signal is carried out respectively interim storage and permanent storage unit of storing, described storage unit connects microprocessor, described signal receiving module connects microprocessor, described microprocessor also is connected with the pulse counter module for the transmitting time signal.
When vehicle in motion, signal acquisition module begins collection vehicle rideability status signal, at this moment, pulse counter module begins timing.because master controller comprises microprocessor and storage unit, and pulse counter module connects microprocessor, so pulse counter module transmitting time signal is to microprocessor, carry out receiving in 2 seconds a signal acquisition module by microprocessor by signal receiving module and collect the road holding status signal, storage unit is processed and sent to microprocessor to the road holding status signal that receives, microprocessor control store unit was stored take a time period as a storage cell temporarily, here the time period got 20 seconds, 10 unit are the real time data of 200 seconds namely, after having spent 200 seconds, these data are preserved for a long time, and restart real time data is next time stored temporarily.Aforesaid operations can simple and effective record and the information of store car rideability state, and storage unit has the function of interim storage and permanent storage, makes and checks that canned data is convenient.
In above-mentioned vehicle running state registering instrument, described storage unit comprises SDRAM and FLASH storer, and described SDRAM is connected microprocessor with the FLASH storer.Storer is used for the road holding status signal is stored.SDRAM is the abbreviation of the English Synchronous Dynamic of synchronous DRAM Random Access Memory, refers to synchronously in SDRAM that memory work needs synchronous clock, and the transmission of inner order and the transmission of data are all take it as benchmark; Refer to that dynamically storage array need to refresh constantly to guarantee that data do not lose; Refer to that at random data are not that linearity is stored successively, but free assigned address carries out reading and writing data.It belongs to a kind of of memory devices the FLASH storer, is a kind of involatile internal memory, also can keep muchly data under the condition that there is no the electric current supply, and its storage characteristics is equivalent to hard disk.
In above-mentioned vehicle running state registering instrument, described signal receiving module includes be used to the CAN bus interface that is received in the vehicle speed signal, tach signal, brake signal, Parking signal and the securing band signal that are gathered respectively by signal acquisition module on the CAN bus network, is used for receiving the A/D translation interface of the rear outputting analog signal of signal acquisition module detection and is used for receiving the I/O interface that signal acquisition module detects rear output digit signals.Signal receiving module adopts above-mentioned port can more comprehensively receive different road holding status signals, makes the data of record more perfect, improves the practicality of this device.The A/D translation interface refers to the interface that simulating signal and digital signal are changed mutually, and I/O is the abbreviation of input/output, i.e. input/output port.
In above-mentioned vehicle running state registering instrument, described microprocessor is connected with the independent current source that is different from automobile storage battery.Have the independent current source of distinguishing automobile storage battery and can avoid when vehicle has an accident, automobile storage battery outage and cause the inoperable problem of this device guarantees that data can preserve.
In above-mentioned vehicle running state registering instrument, described master controller also comprises reset circuit, and described reset circuit connects microprocessor.Reset circuit can be guaranteed the work that circuit is reliable and stable.
In above-mentioned vehicle running state registering instrument, described pulse counter module comprises impulse meter.The impulse meter basic function is the number of statistics time clock, namely realizes counting operation, and impulse meter can the generation time signal, sends to microprocessor.
In above-mentioned vehicle running state registering instrument, described master controller also includes audio output interface, and described main control connects loudspeaker by audio output interface.The microprocessor of master controller is processed the road holding status signal that receives, and and the various signal parameters of microprocessor internal are compared, when the signal data that receives was larger than the parameter of inner setting, microprocessor sends control signal gave the alarm loudspeaker to loudspeaker.
In above-mentioned vehicle running state registering instrument, described master controller also includes the LCD interface for the connecting fluid crystal display screen, and described master controller is by LCD interface connecting fluid crystal display screen.LCD is that the English of Liquid Crystal Display is called for short, and is a kind of of LCDs.The microprocessor of master controller is processed the road holding status signal that receives, and send a signal to LCDs by the LCD interface, can show the information of road holding state on LCDs, remind human pilot and facilitate human pilot to check.
In above-mentioned vehicle running state registering instrument, described master controller also comprises some USB interface and RS-232 interface, and described master controller also includes be used to the SD card interface that connects external storage card.RS-232 is a kind of serial physical interface standard that EIA formulates." RS " is the abbreviation of English " proposed standard ", and 232 is identification number.RS-232 interface can realize the function that master controller and external equipment carry out communication, USB interface can realize that master controller and external unit carry out the function of exchanges data, can use USB interface and RS-232 interface to obtain the data of this device storage when the transmission accident, understand the status information of Vehicle Driving Cycle at that time.Master controller can connect the SD card by the SD card interface simultaneously, the SD card is the abbreviation of English Secure Digital Memory Card, it is a kind of memory device of new generation of based semiconductor fast-flash memory device, the SD jig has very strong storage capacity, when the low memory of master controller, can plug external storage card SD card.
Compared with prior art, this vehicle running state registering instrument has the following advantages:
1, the utility model is to adopt master controller to carry out the road holding status signal that real time record and storing received arrive, and not only can help investigate the cause of the accident when having an accident by these information, and can warn human pilot.
2, the utility model adopts and gathered a secondary data in 2 seconds, take 20 seconds as a storage cell, stores the real time data of 200 seconds temporarily, has guaranteed the accuracy of real time data.
Description of drawings
Fig. 1 is structural representation of the present utility model.
In figure, 1, master controller; 2, microprocessor; 3, SDRAM; 4, FLASH storer; 5, impulse meter; 6, signal acquisition module; 7, CAN bus interface; 8, A/D translation interface; 9, I/O interface; 10, reset circuit; 11, power supply; 12, audio output interface; 13, loudspeaker; 14, LCD interface; 15, LCDs; 16, USB interface; 17, RS-232 interface; 18, SD card interface.
Embodiment
Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiment.
As shown in Figure 1, this vehicle running state registering instrument comprises for the signal acquisition module 6 of collection vehicle rideability status signal and is useful at least 2 seconds and receives road holding status signal data and carry out the master controller 1 of real-time storage data take a time period as a storage cell.Master controller 1 includes the signal receiving module that receives the road holding status signal.Signal receiving module comprises CAN bus interface 7, A/D translation interface 8 and I/O interface 9.Signal acquisition module 6 is connected with master controller 1 by the signal receiving module of master controller 1, and CAN bus interface 7, A/D translation interface 8 and I/O interface are connected connection signal acquisition module 6.
Master controller 1 also includes the microprocessor 2 that the road holding status signal is processed and the road holding status signal is carried out respectively interim storage and permanent storage unit of storing, storage unit comprises synchronous DRAM SDRAM3 and FLASH storer 4, and SDRAM3 is connected with the FLASH storer and is connected microprocessor 2.Signal receiving module also connects microprocessor 2, CAN bus interface 7, A/D translation interface 8 and I/O interface are connected and are connected microprocessor 2, microprocessor 2 also is connected with the pulse counter module for the transmitting time signal, pulse counter module comprises impulse meter 5, microprocessor 2 is connected with impulse meter 5, and microprocessor 2 also is connected with the independent current source 11 that is different from automobile storage battery.Master controller 1 also comprises reset circuit 10, and reset circuit 10 connects microprocessor 2.Master controller 1 also includes audio output interface 12, main control connects loudspeaker 13 by audio output interface 12, microcontroller connects audio output interface 12 and is used for sending information, master controller 1 also includes the LCD interface 14 for connecting fluid crystal display screen 15, and the microprocessor 2 in master controller 1 is by LCD interface 14 connecting fluid crystal display screens 15.Master controller 1 also comprises some usb 1s 6, RS-232 interface 17 and is connected the SD card interface 18 that connects external storage card.
When vehicle begins to travel, the independent current source 11 that is different from automobile storage battery is powered to this device, signal acquisition module 6 beginning collection vehicle rideability status signals, signal acquisition module 6 comprises engine system, transmission system, chassis system, driving system and electric system.In signal receiving module, CAN bus interface 7 is used for being received in vehicle speed signal, tach signal, brake signal, Parking signal and the securing band signal that is gathered respectively by signal acquisition module 6 on the CAN bus network; The reception signal acquisition module 6 that is used for A/D translation interface 8 detects rear outputting analog signals; The reception signal acquisition module 6 that is used for I/O interface 9 detects rear output digit signals.Pulse counter module comprises impulse meter 5, when signal acquisition module 6 is started working, and impulse meter 5 beginning timing.because master controller 1 comprises microprocessor 2 and storage unit, and impulse meter 5 connects microprocessor 2, so impulse meter 5 transmitting time signals are to microprocessor 2, pass through namely CAN bus interface 7 of signal receiving module by microprocessor 2, A/D translation interface 8 and I/O interface 9 carry out receiving in 2 seconds a signal acquisition module 6 and collect the road holding status signal, storage unit is processed and sent to the road holding status signal that 2 pairs of microprocessors receive, storage unit comprises SDRAM3 and FLASH storer 4, microprocessor 2 control store unit namely SDRAM3 and FLASH storer 4 were stored take a time period as a storage cell temporarily, here the time period got 20 seconds, 10 unit are the real time data of 200 seconds namely, after having spent 200 seconds, these data are preserved for a long time, and restart real time data is next time stored temporarily.
The road holding status signal that 2 pairs of microprocessors receive is processed, and and the various signal parameters of microprocessor 2 inside are compared, when the signal data that receives is larger than the parameter of inner setting, microprocessor 2 sends control signal gives the alarm loudspeaker 13 to loudspeaker 13, microprocessor 2 also sends to LCDs 15 to show by LCD interface 14 the road holding status signal of processing, and facilitates human pilot to check and propose caution.The usb 16 of master controller 1 can realize that master controller 1 and external unit carry out the function of exchanges data, RS-232 interface 17 can realize the function that master controller 1 and external equipment carry out communication, can use usb 16 and RS-232 interface 17 to obtain the data of this device storage when the transmission accident, understand the status information of Vehicle Driving Cycle at that time.Master controller 1 can connect the SD cards by SD card interface 18, and the SD jig has very strong storage capacity, when the low memory of master controller 1, can plug external storage card SD card.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has more used the terms such as master controller 1, microprocessor 2, SDRAM3, FLASH storer 4, impulse meter 5, signal acquisition module 6, CAN bus interface 7, A/D translation interface 8, I/O interface 9, reset circuit 10, power supply 11, audio output interface 12, loudspeaker 13, LCD interface 14, LCDs 15, usb 16, RS-232 interface 17, SD card interface 18, do not get rid of the possibility of using other term.Using these terms is only in order to describe more easily and explain essence of the present utility model; They are construed to any additional restriction is all contrary with the utility model spirit.
Claims (9)
1. vehicle running state registering instrument, comprise the signal acquisition module (6) for collection vehicle rideability status signal, it is characterized in that, this device also includes for receiving road holding status signal data at least 2 seconds and carrying out the master controller (1) of real-time storage data take a time period as a storage cell, described master controller (1) includes the signal receiving module that receives the road holding status signal, described signal acquisition module (6) is connected with master controller (1) by the signal receiving module of master controller (1), described master controller (1) also includes the microprocessor (2) that the road holding status signal is processed and the road holding status signal is carried out respectively interim storage and permanent storage unit of storing, described storage unit connects microprocessor (2), described signal receiving module connects microprocessor (2), described microprocessor (2) also is connected with the pulse counter module for the transmitting time signal.
2. vehicle running state registering instrument according to claim 1, is characterized in that, described storage unit comprises SDRAM(3) and FLASH storer (4), described SDRAM(3) be connected 4 with the FLASH storer) connection microprocessor (2).
3. vehicle running state registering instrument according to claim 1 and 2, it is characterized in that, described signal receiving module includes be used to the CAN bus interface (7) that is received in the vehicle speed signal, tach signal, brake signal, Parking signal and the securing band signal that are gathered respectively by signal acquisition module (6) on the CAN bus network, is used for receiving the A/D translation interface (8) of the rear outputting analog signal of signal acquisition module (6) detection and is used for receiving the I/O interface (9) that signal acquisition module (6) detects rear output digit signals.
4. vehicle running state registering instrument according to claim 3, is characterized in that, described microprocessor (2) is connected with the independent current source (11) that is different from automobile storage battery.
5. vehicle running state registering instrument according to claim 4, is characterized in that, described master controller (1) also comprises reset circuit (10), and described reset circuit (10) connects microprocessor (2).
6. vehicle running state registering instrument according to claim 5, is characterized in that, described pulse counter module comprises impulse meter (5).
7. vehicle running state registering instrument according to claim 6, is characterized in that, described master controller (1) also includes audio output interface (12), and described main control connects loudspeaker (13) by audio output interface (12).
8. vehicle running state registering instrument according to claim 7, it is characterized in that, described master controller (1) also includes the LCD interface (14) for connecting fluid crystal display screen (15), and described master controller (1) is by LCD interface (14) connecting fluid crystal display screen (15).
9. vehicle running state registering instrument according to claim 8, it is characterized in that, described master controller (1) also comprises some USB interface (16) and RS-232 interface (17), and described master controller (1) also includes be used to the SD card interface (18) that connects external storage card.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220565269 CN202976239U (en) | 2012-10-30 | 2012-10-30 | Vehicle driving state recording instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220565269 CN202976239U (en) | 2012-10-30 | 2012-10-30 | Vehicle driving state recording instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202976239U true CN202976239U (en) | 2013-06-05 |
Family
ID=48517284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220565269 Expired - Fee Related CN202976239U (en) | 2012-10-30 | 2012-10-30 | Vehicle driving state recording instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202976239U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867306A (en) * | 2014-03-31 | 2014-06-18 | 武汉理工大学 | Automatic gearshift automobile temporary parking flameout starting control method and control system |
| CN103883406A (en) * | 2014-04-01 | 2014-06-25 | 安徽安凯汽车股份有限公司 | Automatic ignition and flameout control method for engine of passenger car |
| CN104035363A (en) * | 2014-05-28 | 2014-09-10 | 湖南三一路面机械有限公司 | Vehicle-mounted record management system and management method thereof |
| CN106652096A (en) * | 2016-12-07 | 2017-05-10 | 广东技术师范学院 | Automobile attitude data acquistition device |
| CN106769084A (en) * | 2016-12-07 | 2017-05-31 | 广东技术师范学院 | A kind of automobile attitude monitoring system |
| CN107103657A (en) * | 2017-04-24 | 2017-08-29 | 北京首发公路养护工程有限公司 | A kind of environmental sanitation vehicles working condition collector and acquisition method |
| CN107193762A (en) * | 2016-03-15 | 2017-09-22 | 爱思开海力士有限公司 | The controller and its operating method of semiconductor storage unit |
| CN107862762A (en) * | 2017-10-27 | 2018-03-30 | 天津津航计算技术研究所 | A kind of airplane data Quick Acquisition and storage system |
| CN110557326A (en) * | 2018-05-30 | 2019-12-10 | 陕西重型汽车有限公司 | vehicle-mounted intelligent remote gateway |
| CN111681338A (en) * | 2020-07-10 | 2020-09-18 | 上海域广通讯科技有限公司合肥分公司 | Vehicle data recording equipment |
-
2012
- 2012-10-30 CN CN 201220565269 patent/CN202976239U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867306B (en) * | 2014-03-31 | 2016-08-17 | 武汉理工大学 | Automatic gearshift automobile temporary parking is flame-out starts control method and control system |
| CN103867306A (en) * | 2014-03-31 | 2014-06-18 | 武汉理工大学 | Automatic gearshift automobile temporary parking flameout starting control method and control system |
| CN103883406A (en) * | 2014-04-01 | 2014-06-25 | 安徽安凯汽车股份有限公司 | Automatic ignition and flameout control method for engine of passenger car |
| CN104035363A (en) * | 2014-05-28 | 2014-09-10 | 湖南三一路面机械有限公司 | Vehicle-mounted record management system and management method thereof |
| CN107193762B (en) * | 2016-03-15 | 2020-10-16 | 爱思开海力士有限公司 | Controller of semiconductor memory device and method of operating the same |
| CN107193762A (en) * | 2016-03-15 | 2017-09-22 | 爱思开海力士有限公司 | The controller and its operating method of semiconductor storage unit |
| CN106652096A (en) * | 2016-12-07 | 2017-05-10 | 广东技术师范学院 | Automobile attitude data acquistition device |
| CN106769084A (en) * | 2016-12-07 | 2017-05-31 | 广东技术师范学院 | A kind of automobile attitude monitoring system |
| CN107103657A (en) * | 2017-04-24 | 2017-08-29 | 北京首发公路养护工程有限公司 | A kind of environmental sanitation vehicles working condition collector and acquisition method |
| CN107862762A (en) * | 2017-10-27 | 2018-03-30 | 天津津航计算技术研究所 | A kind of airplane data Quick Acquisition and storage system |
| CN110557326A (en) * | 2018-05-30 | 2019-12-10 | 陕西重型汽车有限公司 | vehicle-mounted intelligent remote gateway |
| CN110557326B (en) * | 2018-05-30 | 2021-10-08 | 陕西重型汽车有限公司 | Vehicle-mounted intelligent remote gateway |
| CN111681338A (en) * | 2020-07-10 | 2020-09-18 | 上海域广通讯科技有限公司合肥分公司 | Vehicle data recording equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202976239U (en) | Vehicle driving state recording instrument | |
| CN106274779B (en) | A kind of detection method, device and its application of vehicle rollover and collision | |
| CN101110163A (en) | Vehicle driving recorder with GSM network access and its center monitoring software | |
| CN204791529U (en) | Vehicle safe intelligent supervisory systems of traveling | |
| CN102860830A (en) | Field programmable gate array-based (FPGA-based) fatigue driving binocular detection hardware platform | |
| CN102501799A (en) | Mobile terminal and mobile-terminal-based alarm method used for preventing rear-end accident | |
| CN202686330U (en) | Antifatigue driving system of car | |
| CN103832224A (en) | Tire pressure monitoring system and device | |
| CN104828015A (en) | Vehicle-mounted intelligent emergency start power supply anti-theft terminal based on network and sensor | |
| CN202196514U (en) | Intelligent vehicle-mounted terminal | |
| CN206383753U (en) | A kind of tire pressure receives controller | |
| CN203025911U (en) | Fatigue driving detection and identification system based on human face recognition | |
| CN202870930U (en) | System for preventing automobile hit-and-run | |
| CN106875512A (en) | A kind of vehicle-mounted intelligent monitoring system based on sound bearing identification | |
| CN203344818U (en) | Vehicle turning state detecting device based on electronic sensor | |
| TWM436579U (en) | Wireless tire pressure receiving device | |
| CN202562745U (en) | Engine temperature monitoring system in vehicle running state | |
| CN205210322U (en) | Physical geography instrument anti -theft device based on acceleration sensor | |
| CN209802669U (en) | Vehicle reliability test data collection and analysis system based on gyroscope | |
| CN204614164U (en) | Based on the bus transportation driver fatigue monitoring glasses of SPCE061A chip | |
| CN103507892A (en) | Estimated travelling distance display device of electromobile | |
| CN203012809U (en) | Satellite positioning vehicle monitoring vehicle-mounted terminal system | |
| CN207742708U (en) | A kind of automobile data recorder of band collision lock function | |
| CN206654008U (en) | A kind of electronic information monitoring system for automobile | |
| CN207697622U (en) | A kind of rear-end warning system of hazardous materials transportation vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20131030 |