CN201063775Y - Digital video vehicle accident recording instrument - Google Patents
Digital video vehicle accident recording instrument Download PDFInfo
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- CN201063775Y CN201063775Y CNU200720155264XU CN200720155264U CN201063775Y CN 201063775 Y CN201063775 Y CN 201063775Y CN U200720155264X U CNU200720155264X U CN U200720155264XU CN 200720155264 U CN200720155264 U CN 200720155264U CN 201063775 Y CN201063775 Y CN 201063775Y
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Abstract
The utility model relates to the data video image processing field, in particular to a digital video automobile accident recorder, comprising an accident trigger sensor, a central processing unit, an image sensor and a memory, wherein, the central processing unit is an Hi3510 chip, which compress image signals acquired by the image sensor into the H.264 standard format and store in the memory. As the utility model applies the video compression technology H.264 which is the most advanced in the prior industry to the digital video automobile accident recorder, image quality and data compression ratio are greatly improved, while the memory space occupied by images is extremely small. The Hi3510 chip integrating DSP with ARM9 for image processing and control greatly improves the integration level of products, and decreases product cost. Meanwhile, in the aspect of patent charges for use, the H.264 is much lower than other image processing standards.
Description
Technical field
The utility model relates to the data field of video image processing, particularly a kind of digital video The Development of Automobile Black-Box.
Background technology
" digital video The Development of Automobile Black-Box " is a kind of novel automobile black box, by digital video technology and automobile black box are combined, when having an accident, but the image around the registration of vehicle, speed, acceleration, steering wheel angle, whether throttle operation, time, whether the operation of electronic equipment waits information, for judging that accident cause provides direct visual image evidence, especially can solve contingent dispute when not having the eye witness, further improve the accuracy of accident treatment and the fairness of law enforcement, safeguard the personnel's that observe traffic rules and regulations interests.
Present U.S. Drivecam company, Korea S Caspo company, Galche company, Japanese fujitsu sky company has released the automobile black box with digital video image writing function.But all there is the not high shortcoming of function singleness picture quality in these products, as: image Compression all adopts JPEG and MJPEG (Motion JPEG) technology.The JPEG compress technique is a kind of compression of still image, can only provide discrete still image for accident, and practical effect is bad.MJPEG (Motion JPEG) is the dynamic image compression technique of getting up in the JPEG base growth, and therefore the defective that causes is also very obvious, one: the frame losing phenomenon is serious, real-time is poor, must be under the prerequisite of high definition guaranteeing, is difficult to finish Real Time Compression; Its two: compression efficiency is low, the storage take up room bigger.
The utility model content
The utility model has overcome above-mentioned shortcoming, and a kind of picture quality height, digital video The Development of Automobile Black-Box that the integrated level cost is low are provided.
The technical scheme in the invention for solving the technical problem is: a kind of digital video The Development of Automobile Black-Box comprises
Accident triggers transducer, and the judgement that is used for the accident generation provides information;
Central processing unit is used to receive triggering signal and controls IMAQ;
Imageing sensor is used for carrying out IMAQ under the control of central processing unit; And memory;
Described central processing unit is the Hi3510 chip, and H.264 the picture signal that imageing sensor is obtained is compressed into that reference format is stored in the described memory.
Described accident triggers transducer can comprise vehicle speed sensor, brake sensor, inertial sensor, direction sensor, crash sensor.
Described imageing sensor can comprise and is arranged on headstock or/and the hazard plot image-position sensor of vehicle body both sides also comprises the reversing imageing sensor that is arranged on the tailstock.
Described imageing sensor can be transferred to described central processing unit with the image signal data that obtains by LVDS Low Voltage Differential Signal transmission means.
Described imageing sensor can be selected MT9V125 for use
Described memory can be the SD storage card.
Also can comprise the display that links to each other with described central processing unit.
Described display can be LCD display.
Described imageing sensor can be connected with one and be used for the independent microprocessor that imageing sensor is carried out control and management.
Described microprocessor can adopt MCU.
H.264, the utility model is applied to " digital video The Development of Automobile Black-Box " by adopting the state-of-the-art video compression technology of current industry, has greatly improved picture quality and data compression rate, and it is minimum that image takies memory space.Select the Hi3510 chip that integrates DSP and ARM9 for use in image processing and control, greatly improved the integrated level of product, reduced product cost.Simultaneously aspect patent royalties H.264 than low many of other image processing standard.
Description of drawings
Fig. 1 is a theory diagram of the present utility model
Fig. 2 is the control principle figure of imageing sensor in the utility model.
Embodiment
At first the related technical term of the utility model is explained:
H.264:H.264 be the new digital video coding standard of joint video team (JVT:joint video team) exploitation of the MPEG (moving picture expert group) of the VCEG (video coding expert group) of ITU-T and ISO/IEC.
LVDS:LVDS (Low Voltage Differential Signaling) is the Low Voltage Differential Signal transmission, is a kind of new technique that current high-performance data transmission is used that satisfies.Because it can make system's supply power voltage be low to moderate 2V, so it can also satisfy the following needs of using.This technology is based on ANSI/TIA/EIA-644 LVDS interface standard.
DSP:DSP is the abbreviation of (Digital Signal Processing), the expression digital signal processor, informationalized basis is digitlization, one of digitized core technology is a Digital Signal Processing, the task of Digital Signal Processing need be finished by the DSP device to a great extent, and the DSP technology has become cutting edge technology people's growing interest and that obtain developing rapidly.
MCU:MCU (Micro Controller Unit) Chinese is a multipoint control unit, claim one chip microcomputer (Single Chip Microcomputer) again, be meant appearance and development thereof along with large scale integrated circuit, CPU, RAM, ROM, timing number device and the multiple I/O interface of computer are integrated on a slice chip, form the computer of chip-scale, for doing various combination control in different application scenarios.
Below in conjunction with specific embodiment the utility model content is described in detail.As shown in fig. 1, the utility model is the control core with the central processing unit, employing integrates the Hi3510 chip of DSP and ARM9, is made of the hazard plot image-position sensor that connects described central processing unit respectively, reversing imageing sensor, vehicle speed sensor, brake sensor, inertial sensor, direction sensor, crash sensor, LCD display and SD storage card (hereinafter to be referred as the SD card).Described hazard plot image-position sensor is arranged on the front end or the vehicle body both sides of automobile, also can with storage condition one or more imageing sensors be set as required, thereby reach multi-angle, multi-faceted IMAQ, described reversing imageing sensor is arranged on the tailstock, when reversing automobile, be used to take the image help driver reversing of rear view of vehicle, also can when accident takes place, write down the image information of the tailstock.
Described central processing unit is selected Hi3510 for use, because Hi3510 is the high performance communication Media Processor of a high integrated, able to programme, multi-protocols such as support MPEG-4AVC/H.264 etc. based on ARM9, DSP dual processor kernel and hardware acceleration engine, Graphics Processing Unit can provide video denoising, figure image intensifying, and motion detection function; Support video, the pantography of arbitrary proportion, and De-interlace handles; Support OSD, 2D figure to quicken, therefore provide abundant characteristic for the Graphics Application interface development.Consider product in actual environment for use anti-interference factor and the convenience of installation, adopt current LVDS Low Voltage Differential Signal transmission novel high-performance transfer of data skill between imageing sensor and the central processing unit.
Described imageing sensor is selected MT9V125 for use, and MT9V125 has adopted the distinctive low noise high sensitive of Micron Digital Clarity technology, provides remarkable video quality, especially under the low light level and high light state.During 27MHz, it was 30 frame/seconds that two electronic shutters are caught speed, the file speed 60Hz of ntsc video system; Seizure speed during for PAL video system 27MHz was 25 frame/seconds, and file speed is 50Hz.The operating temperature range of MT9V125 expansion :-40 ℃ to 105 ℃, can in the environment of sternness, work reliably.The Pixel Dimensions of MT9V125 is 5.6 * 5.6 μ m, adopts 1/4 inch lens form of standard.
The control structure of described imageing sensor part as shown in Figure 2, between imageing sensor MT9V125 and central processing unit Hi3510, realize the LVDS transfer of data, for reduce with central processing unit between be connected pin, need to use a MCU to be responsible for imageing sensor MT9V125 is carried out control and management, we select PIC10F202T for use in this product, described MCU is independent of the controller of central processing unit Hi3510, can realize control to the vision sensor data gatherer process, pin between described central processing unit and the imageing sensor is mainly used in the LVDS transfer of data, no longer carry out data acquisition control, make the central processing unit can reception image file as much as possible, improve the utilance of described central processing unit pin.
When automobile advances, described hazard plot image-position sensor obtains the vehicle front picture signal, by LVDS Low Voltage Differential Signal transmission means image signal data is transferred to described central processing unit again, DSP in the central processing unit carries out picture signal in real time to compress processing with reference format H.264, vehicle speed sensor is obtained the automobile pace, the above-mentioned view data that collects and car speed data being deposited in SD after synthetic sticks into row and preserves, according to the practical application needs, the SD card is divided into 10 memory cell, each memory cell can write down 6 minutes view data, therefore whole SD card can write down 60 minute datas, after each memory cell of SD card all writes down completely, adopt the principle of first in first out that the data of unit records are deleted, write down new data again.If in the process of picture signal collection, brake occurred, then brake sensor will deposit its brake signal in SD and stick into the row preservation after view data and car speed data are synthesized, central processing unit passes through inertial sensor, direction sensor, the crash sensor signal, adopt the multi-sensor information fusion technology of present comparative maturity, judge that the traffic accident thing takes place whether to take place automobile, in case judge that automobile has an accident, central processing unit 2 memory cell in front and back on the SD card of moment that will have an accident, promptly store and collide and the image data during generation bump such as brake hard freezes preservation, can not delete again, for judging that afterwards traffic accident responsibility uses.If in accident back or the escape of accident automobile take place, central processing unit calls other memory cell of not freezing on the SD card with commander and continues to preserve new data.
LCD display is selected 16: 9 display screen for use, has enough wide visual angle, and LCD can be made of one machine with central processing unit, also can adopt independent LCD display interface with it, and interface mode has LVDS and VIDEO full signal.To move backward image and switching on the LCD display of central processing unit utilizes the image of taking rear view of vehicle to help the driver to move backward when automobile is carried out reverse gear.
More than digital video The Development of Automobile Black-Box provided by the utility model is described in detail, used specific case herein principle of the present utility model and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (10)
1. a digital video The Development of Automobile Black-Box comprises
Accident triggers transducer, and the judgement that is used for the accident generation provides information;
Central processing unit is used to receive triggering signal and controls IMAQ;
Imageing sensor is used for carrying out IMAQ under the control of central processing unit; And memory;
It is characterized in that: described central processing unit is the Hi3510 chip, and H.264 the picture signal that imageing sensor is obtained is compressed into that reference format is stored in the described memory.
2. digital video The Development of Automobile Black-Box according to claim 1 is characterized in that: described accident triggers transducer and comprises vehicle speed sensor, brake sensor, inertial sensor, direction sensor, crash sensor.
3. digital video The Development of Automobile Black-Box according to claim 1 is characterized in that: described imageing sensor comprises and is arranged on headstock or/and the hazard plot image-position sensor of vehicle body both sides also comprises the reversing imageing sensor that is arranged on the tailstock.
4. digital video The Development of Automobile Black-Box according to claim 1 is characterized in that: described imageing sensor is transferred to described central processing unit by LVDS Low Voltage Differential Signal transmission means with the image signal data that obtains.
5. digital video The Development of Automobile Black-Box according to claim 1 is characterized in that: described imageing sensor is connected with one and is used for the independent microprocessor that imageing sensor is carried out control and management.
6. according to each described digital video The Development of Automobile Black-Box in the claim 1～5, it is characterized in that: also comprise the display that links to each other with described central processing unit.
7. according to claim 1 or 4 or 5 described digital video The Development of Automobile Black-Box, it is characterized in that: described imageing sensor is selected MT9V125 for use.
8. digital video The Development of Automobile Black-Box according to claim 1 is characterized in that: described memory is the SD storage card.
9. digital video The Development of Automobile Black-Box according to claim 6 is characterized in that: described display is a LCD display.
10. digital video The Development of Automobile Black-Box according to claim 5 is characterized in that: described microprocessor adopts MCU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720155264XU CN201063775Y (en) | 2007-07-13 | 2007-07-13 | Digital video vehicle accident recording instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720155264XU CN201063775Y (en) | 2007-07-13 | 2007-07-13 | Digital video vehicle accident recording instrument |
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| Publication Number | Publication Date |
|---|---|
| CN201063775Y true CN201063775Y (en) | 2008-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU200720155264XU Expired - Fee Related CN201063775Y (en) | 2007-07-13 | 2007-07-13 | Digital video vehicle accident recording instrument |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105208355A (en) * | 2015-10-21 | 2015-12-30 | 合肥华凌股份有限公司 | Refrigerator data acquisition method and system as well as refrigerator |
| CN112802229A (en) * | 2021-01-09 | 2021-05-14 | 徐占奇 | Automobile data recorder based on wireless communication and video recording function control method thereof |
-
2007
- 2007-07-13 CN CNU200720155264XU patent/CN201063775Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105208355A (en) * | 2015-10-21 | 2015-12-30 | 合肥华凌股份有限公司 | Refrigerator data acquisition method and system as well as refrigerator |
| CN112802229A (en) * | 2021-01-09 | 2021-05-14 | 徐占奇 | Automobile data recorder based on wireless communication and video recording function control method thereof |
| CN112802229B (en) * | 2021-01-09 | 2022-07-19 | 深圳捷渡科技有限公司 | Automobile data recorder based on wireless communication and video recording function control method thereof |
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Legal Events
| 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: 20080521 Termination date: 20130713 |