CN201600729U - Video-based automobile driving recoding device based on videos - Google Patents
Video-based automobile driving recoding device based on videos Download PDFInfo
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- CN201600729U CN201600729U CN2010200205390U CN201020020539U CN201600729U CN 201600729 U CN201600729 U CN 201600729U CN 2010200205390 U CN2010200205390 U CN 2010200205390U CN 201020020539 U CN201020020539 U CN 201020020539U CN 201600729 U CN201600729 U CN 201600729U
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Abstract
The utility model discloses a video-based automobile driving recoding device, which comprises a video acquisition device, driver operation keys, a sensor, a storage device and a microprocessor. Among the units, the video acquisition device comprises a front camera and a rear camera and provided with the storage device. The units of the automobile driving recoding device are respectively connected with the microprocessor; and the storage device, an accident operation key, a system zero clearing key, an automobile collision sensor, a brake sensor and a steering wheel rotational angle sensor are all connected with the microprocessor. Main parts of the automobile driving recording device include the cameras, the ARM7 microprocessor and a CF storage card, and the automobile driving recording device has less investment cost, simple use and operation and fine steadiness.
Description
Technical field
The utility model relates to the automobile running record field, is specifically related to a kind of automobile traveling recording device based on video.
Background technology
In recent years, the situation of China's traffic safety is very severe always, and great, the especially big traffic hazard that causes the dead group of group to hinder takes place again and again, has brought massive losses to people's lives and properties, has also restricted further developing of national economy to a certain extent.Often lack real evidence when causal investigation is carried out in traffic hazard, can only lean on accident litigant's testimony and some inspection of the scene of a crime data.This method can not be accomplished accurate, causes artificial inequity again easily.In order to obtain the vehicle operating parameter in the vehicle traveling process, for the responsibility judgement after the accident generation reaches driver's driving behavior is monitored, existing way is that automobile travel recorder is installed on automobile, these registering instruments are usually to some concrete parameters of automobile, as car speed, steering angle, travel route carries out record, seldom has pair vehicle traveling process to carry out the system of video monitoring.On the other hand, a spot of equipment also provides video monitoring, but because the video storage data volume is big, and the use character of Vehicular video registering instrument has determined that its price can not be too high, so can not adopt high performance video processing equipment and memory device in the system.At present, this automobile travel recorder that has video monitoring is used seldom, mainly is subject to system cost.
The probability that has an accident for each particular automobile is very little, video image in the automobile normal running process is otiose for crash analysis, generally, when carrying out the identification of accident investigation or accident responsibility, video before the accident that only need obtain takes place in very short a period of time is just passable, therefore, for complexity and the system cost that reduces system, be convenient to popularizing of Vehicular video registering instrument, for being very important based on the device of the automobile running record of video and the research of record.
Summary of the invention
The shortcomings and deficiencies that exist in the prior art, the purpose of this utility model is, a kind of automobile traveling recording device and method thereof based on video is provided, solved the excessive problem of data volume in the running car videograph, and the video of running car before can the recording traffic accident taking place.The utility model investment cost is few, use is simple, good stability.
In order to reach above-mentioned technical purpose, the utility model is taked following technical scheme:
A kind of automobile traveling recording device based on video comprises with lower unit:
Video acquisition device, camera and back camera are used for gathering in real time video information before comprising;
The driver's operation button comprises emergency button and system's reset button, and emergency button is used for transmitting trouble-signal to microprocessor when minor accident; System's reset button is used for the video zero clearing;
Sensor, comprise car crass sensor, brake sensor and steering wheel angle sensor, the car crass sensor is used for sending signal to microprocessor when accident takes place, brake sensor is used for sending signal to microprocessor when emergency brake, and steering wheel angle sensor is used for sending signal to microprocessor when emergency turn;
Memory device is used for the video information that the store video harvester collects;
Microprocessor, being used for forward, camera sends control signal with the back camera, control forward and backward camera collection video information and receive preceding camera and the vision signal that the back camera sends, the vision signal that receives is saved in the memory device as video file; Receive the signal of car crass sensor, brake sensor, steering wheel angle sensor, emergency button transmission in real time, judge whether to take place traffic hazard according to the signal that receives; The signal of real-time receiving system reset button is according to the video information in this signal removal memory device.
In the said units, preceding camera all is connected with microprocessor with back camera, memory device, accident action button, system's reset button, car crass sensor, brake sensor and steering wheel angle sensor;
The utility model also comprises following other technologies feature, and described preceding camera is identical with the frequency acquisition of back camera.
Camera and back camera all adopt Mai Dekesi MS-sudden peal of thunder USB2.0 camera before described.
Described microprocessor adopts ARM 7 processors.
Described memory device employing capacity is the CF card of 4G.
The utility model is gathered the video at vehicle front and rear respectively by two cameras, and video is handled preservation.Video acquisition, the time interval of preservation is 3 minutes, the Video processing that is about in per 3 minutes saves as an independent video file, is kept in the data storage card.Each data are carried out discriminatory analysis to the motoring condition in this time period after preserving and finishing, if automobile does not have an accident in this time period, the video deletion that then should write down in the time period is to save storage space.If in this time period traffic hazard has taken place, then should be saved in the storage card by the video of record in the time period, use during for analysis on accident cause and accident responsibility identification.
The critical piece of the utility model video recording apparatus adopts camera, ARM 7 microprocessors and Compact Flash, low cost, and cost is low; This video recording method is mainly finished automatically by microprocessor, and is simple to operate, and the recording of video result directly is saved in the storage card, and structure is directly perceived, reliable;
Description of drawings
Fig. 1 is the structural representation of the utility model device.
Fig. 2 be in the utility model before camera and the back camera scheme of installation.
Fig. 3 is the process flow diagram that utilization the utility model carries out the method for automobile running record.
Fig. 4 is the decision flow chart that utilization the utility model carries out accident determining step in the method for automobile running record.
Below in conjunction with embodiment the utility model is described in further detail.
Embodiment
With reference to Fig. 1, the automobile traveling recording device based on video of the present utility model comprises with lower unit:
Video acquisition device, camera and back camera are used for gathering in real time video information before comprising;
The driver's operation button comprises emergency button and system's reset button, and emergency button is used for transmitting trouble-signal to microprocessor when minor accident; System's reset button is used for the video zero clearing;
Sensor, comprise car crass sensor, brake sensor and steering wheel angle sensor, the car crass sensor is used for sending signal to microprocessor when accident takes place, brake sensor is used for sending signal to microprocessor when emergency brake, and steering wheel angle sensor is used for sending signal to microprocessor when emergency turn;
Memory device is used for the video information that the store video harvester collects, and memory device employing capacity is the CF card of 4G;
Microprocessor, being used for forward, camera sends control signal with the back camera, control forward and backward camera collection video information and receive preceding camera and the vision signal that the back camera sends, the vision signal that receives is saved in the memory device as video file; Receive the signal of car crass sensor, brake sensor, steering wheel angle sensor, emergency button transmission in real time, judge whether to take place traffic hazard according to the signal that receives; The signal of real-time receiving system reset button is according to the video information in this signal removal memory device.
In the said units, preceding camera all is connected with microprocessor with back camera, memory device, accident action button, system's reset button, car crass sensor, brake sensor and steering wheel angle sensor;
With reference to Fig. 2, the preceding camera A in the present embodiment is installed in the back side of room mirror, is connected with room mirror with bolt, installs towards vehicle front, is used to gather the video of vehicle front; Back camera B is installed in rear windshield edge on glass in the car, is connected with roof with bolt, installs towards the automobile rear, is used to gather the video at automobile rear.Crash sensor is installed in the automobile head and is used for collision accident is monitored in real time.Steering wheel angle sensor is installed on the steering column for vehicles corner to bearing circle and monitors in real time.Brake sensor is installed in and is used to monitor the true-time operation of driver to brake pedal under the brake pedal plate.Emergency button, system's reset button, storage card and microprocessor are installed on the Auto Instrument desk, make things convenient for driver's operation.
For guaranteeing the readability of video that camera is gathered, the valid pixel of camera is 600,000-1,000,000.The camera volume that device of the present invention adopted is little, is suitable for installing at various types of automotive interiors.
Present embodiment adopts two Mai Dekesi MS-news thunder 2 USB2.0 cameras, valid pixel 1,000,000, two camera USB2.0 data lines are connected respectively to ARM 7 microprocessors, camera A and back camera B gather vehicle front video and automobile rear video respectively before the control of ARM 7 microprocessors, and the video that collects is saved in the storage card.
Vehicle crash sensor D is installed in the head of automobile, and the crash sensor D that installs on ARM 7 processors and the automobile is connected by lead, and ARM 7 processors receive the collision alarm from crash sensor.
Vehicle brake sensor E is installed on the pedal position of automobile, and the brake sensor E that installs on ARM 7 processors and the automobile is connected by lead, and arm processor receives the signal of bringing to a halt from brake sensor E.
Steering wheel angle sensor C is installed in below the vehicle steering, and the steering wheel angle sensor C that installs on ARM 7 processors and the automobile is connected by lead, and ARM 7 processors receive the zig zag signal of steering wheel angle sensor C.
With reference to figure 3, Fig. 4, the automobile running record method based on video of using said apparatus may further comprise the steps:
1) system start-up, behind the automobile starting, each unit starting of system;
2) video acquisition and preservation, forward and backward camera is gathered the video information at vehicle front and rear respectively under the control of microprocessor control signal, microprocessor receives the vision signal of forward and backward camera, and the forward and backward two-path video signal that will receive was that unit is kept at respectively in the memory device with 3 minutes, saved as the place ahead video, rear video;
3) accident is judged, microprocessor receives the signal from other unit in real time, and in the signal that receives of real-time judge whether the accident collision alarm is arranged, at least a in the signal of bringing to a halt, zig zag signal or the emergency button signal, if having then judging has accident to take place, then keep video and output in this time period, and proceed real-time accident and judge; If do not receive at least a in four kinds of above-mentioned signals, the conclusion of traffic hazard is not then taken place, execution in step 4);
4) control signal is sent in video deletion, the microprocessor memory device in camera and the back camera forward respectively, and the 6th section video before that time point when accident is judged deleted from memory device.
Wherein, step 3) also comprises the steps:
Judged whether earlier to bring to a halt, take a sudden turn, judged whether again to bump, judged at last whether the driver presses emergency button.
Design of the present invention and principle explanation
A, automobile starting
The power supply of device of the present utility model and the ignition switch of automobile are cascaded, will connect the power supply of video recording device simultaneously when the ignition switch of automobile is connected.Behind the automobile starting, video acquisition device electrifying startup, camera begin to gather video, and ARM 7 processors, each sensor electrifying startup are started working.
B, video acquisition, preservation
ARM 7 microprocessors are controlled former and later two cameras vehicle front and automobile rear are taken, and images acquired is input in ARM 7 microprocessors; During images acquired, ARM 7 directly controls the collecting work of camera by USB interface, does not need other special control lines.
When starting working, control former and later two cameras by ARM 7 microprocessors vehicle front and automobile rear are carried out image acquisition, the image that collects is imported in ARM 7 microprocessors in the mode of USB2.0.ARM 7 microprocessors receive the vision signal from the USB2.0 passage, and with the two-path video signal according to per 3 minutes for unit is saved in the storage card, two-path video saves as two video files respectively.
C, accident are judged
The initial conditions of the accident determining step in the automobile running record method of the present utility model is divided into two kinds, a kind of brake signal, turn signal and collision status signal for sensor assembly output; Another is the emergency button in the driver's operation button.In very short a period of time, the driver can carry out emergency brake or break turn usually before accident took place, therefore, and by having judged whether that emergency brake, emergency turn the accident that can judge whether take place take place; Whether when accident took place, the crash sensor of installing on the automobile can send the accident collision alarm, had accident to take place by judging whether the signal that receives crash sensor; When having the part traffic hazard to take place, because accident is very slight, above-mentioned three kinds of sensors all can not collect signal, the driver is not subjected to grievous injury usually in this case, this moment, the driver pressed the emergency button that panel board is installed in car, microprocessor receives the signal of this emergency button, judges whether the generation of accident.
A, judge whether to bring to a halt
In the video recording device operational process, the signal of bringing to a halt that ARM 7 processor real-times monitoring brake sensor is exported.Automobile is under the cruising situation, and brake sensor can not exported the signal of bringing to a halt, and the ARM7 microprocessor can not receive the signal of bringing to a halt, and the judged result of bringing to a halt is not for bringing to a halt.When automobile had an accident, the driver generally can take severe brake action, and brake sensor sends the signal of bringing to a halt, and ARM 7 processors receive the signal of bringing to a halt, and the judged result of bringing to a halt is brought to a halt for having taken place.
B, judge whether the zig zag
In the video recording device operational process, the zig zag signal that ARM 7 processor real-times monitoring steering wheel angle sensor is exported.Automobile is under the cruising situation, and steering wheel angle sensor can not exported the zig zag signal, and ARM 7 microprocessors can not receive the zig zag signal, and the zig zag judged result is not for taking a sudden turn.When automobile had an accident, the driver generally can take the zig zag action, and steering wheel angle sensor sends the zig zag signal, and ARM 7 processors receive the zig zag signal, and the zig zag judged result is for zig zag has taken place.
C, judge whether to bump
In the video recording device operational process, ARM 7 microprocessors are monitored the collision alarm that crash sensor is exported in real time.Automobile is under the cruising situation, and crash sensor is not exported collision alarm, and ARM 7 microprocessors can not receive collision alarm, and collision judgment result is not for bumping.When great collision accident took place automobile, crash sensor sent collision alarm, and ARM 7 processors receive collision alarm, and collision judgment result is for bumping.
D, judge whether the driver presses emergency button
In the video recording device operational process, the state of ARM 7 processor real-times monitoring emergency button.Automobile does not need to carry out video acquisition because traffic hazard takes place in the cruising process, so the driver do not need to press this switch and carry out videograph, and emergency button state judged result is not pressed emergency button for the driver.Automobile has an accident smaller under a lot of situations, do not have collision alarm, bring to a halt signal and the zig zag signal be input to ARM 7 processors, but the video when this situation also needs to keep this accident generation, at this moment the driver presses emergency button, and judged result is pressed emergency button for the driver.
D, video keep and the video deletion
Write down the video image at vehicle front and automobile rear after this device electrifying startup constantly, and video image is saved in the storage card.The interior video of time period that does not have accident to take place is otiose for crash analysis and divisions of responsibility can, therefore need be with these videos deletions; The interior video of time period that has accident to take place is useful for crash analysis and divisions of responsibility can, therefore these videos need be kept in storage card.The video deletion is to judge whether to bump, judge whether to bring to a halt, judge whether to take a sudden turn, judge whether the driver presses emergency button with the foundation that keeps.As long as a deterministic process judged result is arranged in these four deterministic processes for corresponding situation has taken place, represent that then traffic hazard has taken place automobile in this time period, need and should in storage card, keep by the video file in the time period.If judge whether to bump, judge whether to bring to a halt, judge whether to take a sudden turn, judge that whether the driver presses four deterministic process judged results of emergency button all is that corresponding situation does not take place, then be illustrated in interior automobile of this time period traffic hazard does not take place, video in this time period does not need to keep, and ARM 7 processors are deleted the video in this time period.
The video deletion time considers that the driver may not can press accident generation button immediately after accident takes place, therefore, during the video deletion deletion to as if this time period before the 6th section video, promptly the video of each deletion is preceding the 6th section video of this time point.
E, video output
After the automobile generation traffic hazard, the driver needs the video image in this accident time of origin section is shifted out from video recording device, for crash analysis and divisions of responsibility can provide reference video.Carrying out video playback when carrying out crash analysis and divisions of responsibility can is to carry out on other computing machines, so the video of video recording device institute recorded and stored need be transferred on other computer equipments and uses.The memory device that the utility model adopts is a storage card, and during video output, the driver extracts storage card from video recording device, be inserted into and finish the video output procedure in other computing machines.
F, system's zero clearing
The accident probability that each independent automobile takes place is very little, and in order to guarantee that can carry out correct video acquisition to occurrent accident preserves, present embodiment has been taked above-mentioned judgement.Two deterministic processes that wherein judge whether to bring to a halt and judge whether to take a sudden turn can cause the reservation of some useless videos, reason is under the automobile situation that occurs bringing to a halt and taking a sudden turn traffic hazard to take place not necessarily, the experience of life shows, most bring to a halt and take a sudden turn can not cause the accident, but generally all can bring to a halt and take a sudden turn when having an accident.Under long-time operating position, can record in the video recording device some the video of bringing to a halt and taking a sudden turn has taken place, but should not have an accident in the time period, and this video council takies the space of memory device, therefore, the driver can remove the video in the storage card by use accident reset button.ARM 7 processors receive from after the reset signal of accident reset button more than lasting 5 seconds the video in the storage card being removed, and continuing to press the accident reset button is in order to prevent driver's maloperation to this button when operating at ordinary times more than 5 seconds.
Claims (5)
1. the automobile traveling recording device based on video is characterized in that, comprises with lower unit:
Video acquisition device, camera and back camera are used for gathering in real time video information before comprising;
The driver's operation button comprises emergency button and system's reset button, and emergency button is used for transmitting trouble-signal to microprocessor when minor accident; System's reset button is used for the video zero clearing;
Sensor, comprise car crass sensor, brake sensor and steering wheel angle sensor, the car crass sensor is used for sending signal to microprocessor when accident takes place, brake sensor is used for sending signal to microprocessor when emergency brake, and steering wheel angle sensor is used for sending signal to microprocessor when emergency turn;
Memory device is used for the video information that the store video harvester collects;
Microprocessor, being used for forward, camera sends control signal with the back camera, control forward and backward camera collection video information and receive preceding camera and the vision signal that the back camera sends, the vision signal that receives is saved in the memory device as video file; Receive the signal of car crass sensor, brake sensor, steering wheel angle sensor, emergency button transmission in real time, judge whether to take place traffic hazard according to the signal that receives; The signal of real-time receiving system reset button is according to the video information in this signal removal memory device;
In the said units, preceding camera all is connected with microprocessor with back camera, memory device, accident action button, system's reset button, car crass sensor, brake sensor and steering wheel angle sensor.
2. the automobile traveling recording device based on video as claimed in claim 1 is characterized in that, described preceding camera is identical with the frequency acquisition of back camera.
3. the automobile traveling recording device based on video as claimed in claim 1 or 2 is characterized in that, described preceding camera and back camera all adopt Mai Dekesi MS-sudden peal of thunder USB2.0 camera.
4. the automobile traveling recording device based on video as claimed in claim 1 is characterized in that, described microprocessor adopts ARM 7 processors.
5. the automobile traveling recording device based on video as claimed in claim 1 is characterized in that, described memory device employing capacity is the CF card of 4G.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200205390U CN201600729U (en) | 2010-01-22 | 2010-01-22 | Video-based automobile driving recoding device based on videos |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010200205390U CN201600729U (en) | 2010-01-22 | 2010-01-22 | Video-based automobile driving recoding device based on videos |
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| CN201600729U true CN201600729U (en) | 2010-10-06 |
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| CN2010200205390U Expired - Fee Related CN201600729U (en) | 2010-01-22 | 2010-01-22 | Video-based automobile driving recoding device based on videos |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101777199B (en) * | 2010-01-22 | 2012-10-03 | 长安大学 | Automobile traveling recording device based on video and recording method thereof |
| CN103489231A (en) * | 2013-09-26 | 2014-01-01 | 浙江吉利控股集团有限公司 | Driving condition recording device and driving condition recording method |
| CN105365674A (en) * | 2015-12-04 | 2016-03-02 | 长城信息产业股份有限公司 | Multifunctional vehicle meter panel and realization method thereof |
-
2010
- 2010-01-22 CN CN2010200205390U patent/CN201600729U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101777199B (en) * | 2010-01-22 | 2012-10-03 | 长安大学 | Automobile traveling recording device based on video and recording method thereof |
| CN103489231A (en) * | 2013-09-26 | 2014-01-01 | 浙江吉利控股集团有限公司 | Driving condition recording device and driving condition recording method |
| CN105365674A (en) * | 2015-12-04 | 2016-03-02 | 长城信息产业股份有限公司 | Multifunctional vehicle meter panel and realization method thereof |
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| Date | Code | Title | Description |
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| 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: 20101006 Termination date: 20110122 |