CN102681533A - Equipment for calibrating, upgrading and detecting LDW (Lane Departure Warning) system - Google Patents
Equipment for calibrating, upgrading and detecting LDW (Lane Departure Warning) system Download PDFInfo
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Abstract
The invention relates to equipment for calibrating, upgrading and detecting a LDW (Lane Departure Warning) system. The equipment is characterized by comprising a shell, a core processing unit, a video input unit, a communication unit and an alarming unit, wherein the core processing unit, the video input unit, the communication unit and the alarming unit are arranged in the shell; the shell is provided with a human-machine interaction unit and an LCD (Liquid Crystal Display); the core processing unit comprises a calibrating module, an upgrading module and a detection module; the communication unit comprises a CAN (Controller Area Network) communication unit and a USB (Universal Serial Bus) communication unit; the detection module comprises a soft detection module and a hardware detection module; the input end of the core processing unit is connected with the output ends of the video input unit and the human-machine interaction unit respectively; the output end of the core processing unit is connected with the input ends of a video output unit and the alarming unit respectively; the input end of the video input unit is connected with a camera of the LDW system; and the core processing unit is bilaterally connected with the LDW system through the CAN communication unit, and is bilaterally connected with the USB communication unit. The equipment can be widely applied to calibration, upgrading and detection of LDW systems of various automobiles.
Description
Technical field
The present invention relates to a kind of utility appliance that automobile safety system is demarcated, upgraded and detects of being used for, particularly about a kind of equipment that the LDW system is demarcated, upgrades and detects of being used for.
Background technology
LDW system (driveway deviation alarming system) is a kind of driving ancillary equipment, and this system reports to the police in the time of can be to the automobile generation deviation phenomenon of going on highway or two-lane highway, in time reminds the driver to revise driving condition.The LDW system belongs to machine vision equipment; Need to adopt camera to take the road surface scene in the driving process, need demarcate the camera parameter when therefore using, the camera parameter calibration is the relation of setting up between camera image location of pixels and the scene point location; It mainly is imaging model according to camera; By the model parameter that the image coordinate and the world coordinates of known features point are found the solution camera, need demarcate respectively the inner parameter and the external parameter of camera usually, inner parameter is used to describe the relation between camera coordinate system and the image coordinate system; Only and camera structure, relevant such as camera lens, Pixel Dimensions etc.; External parameter is meant the relation between camera coordinate system and the world coordinate system, comprises translation and rotation.Soft, hardware capability detection that the LDW system in use also need often carry out; Be connected with checkout equipment and receive and dispatch coherent detection information through the CAN bus; Checkout equipment according to these information judge the LDW system soft, whether hardware normal; If undesired, then send information warning, and in use also need irregularly carry out code upgrade the LDW system.
Traditional approach is demarcated to mutually combine through PC, CAN card and video frequency collection card to the camera in the LDW system and is realized; The mode that this kind demarcated the LDW system has adopted more communication facilities; Not only efficient is lower, use inconvenience, and cost is also than higher (as shown in Figure 4).Traditional approach regularly carries out code upgrade to the LDW system, is to link the LDW system that receives through PC and CAN, is transferred to the DSP of LDW system to the code after upgrading, and needs the communication facilities through separating equally, uses inconveniently, and cost is also than higher.Traditional approach is to be connected sending and receiving coherent detection information with checkout equipment through the CAN bus when LDW system is carried out in installation process that soft, hardware capability detects; Checkout equipment according to these information judge LDW equipment soft, whether hardware normal; The checkout equipment that this kind mode also need be added; Not only use inconvenience, and cost is also than higher.
Summary of the invention
To the problems referred to above, the purpose of this invention is to provide and a kind ofly can reduce intermediate equipment, and being used for of can effectively reducing cost equipment that the LDW system is demarcated, upgrades and detects.
For realizing above-mentioned purpose; The present invention takes following technical scheme: a kind of equipment that the LDW system is demarcated, upgrades and detects of being used for; It is characterized in that: it comprises a shell; Be arranged on a core processing unit, a video input block, a communication unit and an alarm unit in the said shell, said shell is provided with a man-machine interaction unit and a LCD display; Said core processing unit comprises a demarcating module, a upgrading module and a detection module, and said communication unit comprises a CAN communication unit and a usb communication unit, and said detection module comprises a software detection module and a hardware detecting module; Wherein, The input end of said core processing unit connects the output terminal of said video input block and man-machine interactively unit respectively; The output terminal of said core processing unit connects the input end of said alarm unit and LCD display respectively; The input end of said video input block connects the camera of a LDW system, and said core processing unit is through the said LDW of the two-way connection of said CAN communication unit system, the said usb communication of the two-way connection of said core processing unit unit.
Also be provided with a conformable display on the said shell, said core processing unit connects the input end of said conformable display through a video output unit.
Said core processing unit comprises a S3C6410 processor, the dynamic read-write memory of a DDR2 and a FLASH storer; Said S3C6410 processor adopting WINCE6.0 operating system; The dynamic read-write memory of said DDR2 supplies said WINCE6.0 operating system real time execution program to use the executable program code and the application code of the said WINCE6.0 operating system of said FLASH memory stores.
Said video input block connects said core processing unit through a TVP5150 demoder.
Said man-machine interaction unit includes button and LCD touch-screen.
Said alarm unit comprises an audio alert module and a LED display module.
The present invention is owing to take above technical scheme; It has the following advantages: 1, the present invention is owing to directly be connected the LDW system through the CAN communication unit with core processing unit; Demarcating module in the core processing unit, upgrading module and detection module are accomplished respectively the LDW system are demarcated, upgrade and detects; Compared with prior art, the present invention need not pass through other communication, collection and checkout equipment can accomplish the function of demarcation, upgrading and the detection of LDW system, so has not only reduced the use of intermediate equipment; Reduce equipment cost, and effectively improved the speed of demarcation, upgrading and detection.2, the present invention is placed on owing to demarcation, upgrading and measuring ability with the LDW system integrate and forms holistic portable set in the shell; Not only carry and use all easily, and can on-the-spot the employed LDW of automobile system be demarcated, upgrade and detect.The present invention can be widely used in the demarcation of the LDW system of all kinds of automobiles, upgrading and detecting.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural representation of the specific embodiment of the invention;
Fig. 3 is the syndeton synoptic diagram that the present invention demarcates LDW system camera;
Fig. 4 is the connection synoptic diagram of under the traditional approach LDW system camera being demarcated.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is carried out detailed description.
Shown in Fig. 1～3; Of the present invention being used for comprises a shell (not shown) to the equipment that the LDW system demarcates, upgrades and detects; Be provided with a core processing unit 1, a video input block 2, a video output unit 3, a communication unit 4 and an alarm unit 5 in the shell, shell is provided with a man-machine interaction unit 6, a LCD display 7 and a conformable display (not shown); Core processing unit 1 includes a demarcating module 11, a upgrading module 12 and a detection module 13, and communication unit 4 comprises a CAN communication unit 41 and a usb communication unit 42; Wherein, The input end of core processing unit 1 connects the output terminal of video input block 2 and man-machine interactively unit 6 respectively; The output terminal of core processing unit 1 connects the input end of alarm unit 5 and LCD display 7 respectively; The input end of video input block 2 connects the camera of a LDW system; Core processing unit 1 is through the two-way connection LDW of CAN communication unit 41 system, core processing unit 1 two-way connection usb communication unit 42, and core processing unit 1 connects the input end of conformable displays through video output unit 3.
The LDW system is carried out timing signal; Camera sends to core processing unit 1 with the video image of picked-up through video input block 2; The demarcating module 11 of core processing unit 1 is demarcated the camera external parameter according to the video image that collects; And calibration result sent to the LDW system through CAN communication unit 41, the LDW system accomplishes the demarcation to the external parameter of camera.The parameter that the demarcating module 11 of core processing unit 1 needs to demarcate is: 1) the camera external parameter comprises the angle of pitch of camera, rotation angle and angle of deviation; 2) installation parameter of camera comprises the distance of camera height, the horizontal installation site of camera, camera and wheel and the distance of camera and headstock; Demarcating module 11 also need comprise warning sensitivity to the relevant setting of reporting to the police simultaneously, and sound type and volume are demarcated.The inner parameter of camera general with the camera structure that is adopted, relevant such as camera lens, Pixel Dimensions etc., therefore as long as selected a certain video camera can be accomplished the demarcation of camera inner parameter to its parameter setting.
The LDW system upgrade comprises DSP upgrading and MCU upgrading; Usb communication unit 42 sends to core processing unit 1 with up-to-date program executable file; The upgrading module 12 of core processing unit 1 is analyzed the upgrade data and the address corresponding with it of executable file; And through CAN communication unit 41 upgrade data is sent among DSP or the MCU of LDW system in the corresponding address, accomplish upgrading to the DSP or the MCU of LDW system.The MCU upgrading is different with the upgrading address except the executable file parsing with the DSP upgrading, and other process is all identical.
The detection module 13 of LDW system comprises software detection module and hardware detecting module, and software detection module and hardware detecting module are accomplished the detection to the software and hardware ruuning situation of LDW system through CAN communication unit 41 transmission information respectively.
As shown in Figure 3, in the foregoing description, core processing unit 1 of the present invention comprises S3C6410 processor, the dynamic read-write memory of DDR2 and FLASH storer, and the S3C6410 processor can adopt WINCE6.0 operating system.The dynamic read-write memory of DDR2 supplies WINCE6.0 operating system real time execution program to use the executable program code and the application code of FLASH memory stores WINCE6.0 operating system.
As shown in Figure 2; Among above-mentioned each embodiment; The video of video input block 2 outputs is the composite video of TSC-system formula; Need be through sending in the core processing unit 1 behind the TVP5150 decoder decode, core processing unit 1 connects LCD display 7 through an amplifying circuit digital signal of exporting is outputed to demonstration on the LCD display 7.
Among above-mentioned each embodiment, be provided with amplifying circuit and D/A converting circuit in the video output unit 3, video output unit 3 output terminals connect conformable display, and converting digital signal to simulating signal is that the CVBS signal sends on the conformable display and shows.
Among above-mentioned each embodiment, man-machine interaction unit 6 includes button and LCD touch-screen.Button can reset and control operation to the LDW system in practical operation, and the WINCE6.0 operating system of S3C6410 processor can be operated through the LCD touch-screen.
Among above-mentioned each embodiment, alarm unit 5 comprises an audio alert module and a LED display module, and audio alert module and LED display module can send caution to task completion and signal fault.
Among above-mentioned each embodiment, can adopt battery to supply power when adopting equipment of the present invention that LDW is detected.
Further specify the implementation process that adopts the present invention that the LDW system is demarcated, upgrades and detects through specific embodiment below:
1, like Fig. 2, shown in Figure 3; The LDW system is carried out timing signal; Demarcating module 11 reads the vehicle code and the pairing vehicle default parameters of this vehicle code of the LDW system support of being selected for use through CAN communication unit 41; Wherein, all calibrating parameters relevant with vehicle all are stored in the FLASH storer of LDW system with the XML formatted file, and the XML formatted file comprises all vehicles that employed LDW system supports; And corresponding CAN protocol information of each vehicle and camera installation parameter, core processing unit 1 can be accomplished the demarcation to the installation parameter of LDW system according to the data in the XML formatted file.Demarcation to the installation parameter of camera can be accomplished through hand dipping, the distance of the distance of horizontal installation site, camera and the wheel of the setting height(from bottom) of camera, camera and camera and headstock can be accomplished the demarcation of camera installation parameter through man-machine interaction unit 6 manual inputs; After accomplishing the demarcation of camera installation parameter; One scaling board is positioned over preceding 2 meters of headstock; Read video image through video input block 2; Move the cursor that shows on LCD display 7 interfaces through man-machine interaction unit 6; Make the central point of camera move to the position with the height such as reference center point grade of scaling board, click the completion button on the LCD display 7, demarcating module 11 can go out the angle of pitch, rotation angle and the angle of deviation completion of the camera demarcation to the camera external parameter according to the coordinate Calculation of reference center point on the scaling board.
Demarcating module 11 can also comprise warning sensitivity to the relevant setting of reporting to the police; Sound type and volume are demarcated; After demarcating completion; The information that CAN communication unit 41 is accomplished task sends to core processing unit 1, and core processing unit 1 transmits a signal to alarm unit 5 and sends information warning.After the user has demarcated correlation parameter, can select to preserve current calibration result in the XML formatted file of LDW system.After demarcating completion, the LDW system need restart, and gets into normal mode of operation.In vehicle-mounted practical application; Through constraint is installed; Can think that generally the rotation angle of camera and angle of deviation are very little; Therefore can not ignore it is demarcated, when reality is used, the LDW system is carried out timing signal and only need demarcate and get final product the angle of pitch of the installation parameter of camera and camera.
When 2, the LDW system being upgraded; The upgrading module 12 of core processing unit 1 is obtained present version number of LDW system through CAN communication unit 41; And whether the prompting user need upgrade; Confirm the assembly (DSP or MCU) of needs upgradings according to user's request, in case when confirming to need upgrading, upgrading module 12 will be obtained upgrade data through CCP (CAN Calibration Protocol) agreement from usb communication unit 42; And after the content of the upgrade data that obtains and address analyzed; Correspondence sends among the DSP or MCU of LDW system, and accomplishes the copy of from the dynamic read-write memory of DDR2 to FLASH (the perhaps EEPROM of MCU) simultaneously, accomplishes upgrading.After upgrading was accomplished, the LDW system need restart, and got into normal mode of operation.If in escalation process, break down, CAN communication unit 41 can send to core processing unit 1 with failure message, and core processing unit 1 transmits a signal to alarm unit 5 and sends warning message.
When 3, the LDW system being detected; In installation and use; Hardware detecting module reads and move the hardware detection program in the FLASH storer in the LDW system through CAN communication unit 41, accomplishes following hardware detection: whether the CAN bus functionality that 1. detects the LDW system is normal; Whether the video coding and decoding process and the image processing process that 2. detect the LDW system be correct; Whether the audio coding process that 3. detects the LDW system is correct; 4. detect DDR2 chip and the FLASH chip operate as normal whether in the LDW system.Whether software detection module is used to detect the XML executable file of demarcating and upgrading correct, and software detection module can also regularly read the testing result in the LDW system through CAN communication unit 41 according to the correlation parameter of automobile real time execution, and the correlation parameter of automobile real time execution comprises current vehicle and lane line distance; Current vehicle and leading vehicle distance; The current vehicle speed of a motor vehicle, whether current vehicle left and right sides steering indicating light opens state, and whether current vehicle brake state such as steps on; And detection information outputed on the LCD display 7 show; In l-G simulation test, can be through the correlation parameter of man-machine interaction unit 6 input automobilisms, the function of LDW system is detected.After the hardware and software detection of accomplishing the LDW system, core processing unit 1 is through CAN communication unit 41 notice LDW system recovery normal operating conditions.
In the foregoing description, the LDW system is being carried out timing signal,, then needing at first upgrade, demarcating again after the upgrading the LDW system if detect less than the use vehicle in the employed LDW system.
Above-mentioned each embodiment only is used to explain the present invention, and wherein the structure of each parts and connected mode etc. all can change to some extent, and every equivalents of on the basis of technical scheme of the present invention, carrying out and improvement all should not got rid of outside protection scope of the present invention.
Claims (10)
1. one kind is used for equipment that the LDW system is demarcated, upgrades and detects; It is characterized in that: it comprises a shell; Be arranged on a core processing unit, a video input block, a communication unit and an alarm unit in the said shell, said shell is provided with a man-machine interaction unit and a LCD display; Said core processing unit comprises a demarcating module, a upgrading module and a detection module, and said communication unit comprises a CAN communication unit and a usb communication unit, and said detection module comprises a software detection module and a hardware detecting module; Wherein, The input end of said core processing unit connects the output terminal of said video input block and man-machine interactively unit respectively; The output terminal of said core processing unit connects the input end of said alarm unit and LCD display respectively; The input end of said video input block connects the camera of a LDW system, and said core processing unit is through the said LDW of the two-way connection of said CAN communication unit system, the said usb communication of the two-way connection of said core processing unit unit.
2. a kind of equipment that the LDW system is demarcated, upgrades and detects of being used for as claimed in claim 1; It is characterized in that: also be provided with a conformable display on the said shell, said core processing unit connects the input end of said conformable display through a video output unit.
3. a kind of equipment that the LDW system is demarcated, upgrades and detects of being used for as claimed in claim 1; It is characterized in that: said core processing unit comprises a S3C6410 processor, the dynamic read-write memory of a DDR2 and a FLASH storer; Said S3C6410 processor adopting WINCE6.0 operating system; The dynamic read-write memory of said DDR2 supplies said WINCE6.0 operating system real time execution program to use the executable program code and the application code of the said WINCE6.0 operating system of said FLASH memory stores.
4. a kind of equipment that the LDW system is demarcated, upgrades and detects of being used for as claimed in claim 2; It is characterized in that: said core processing unit comprises a S3C6410 processor, the dynamic read-write memory of a DDR2 and a FLASH storer; Said S3C6410 processor adopting WINCE6.0 operating system; The dynamic read-write memory of said DDR2 supplies said WINCE6.0 operating system real time execution program to use the executable program code and the application code of the said WINCE6.0 operating system of said FLASH memory stores.
5. like claim 1 or 2 or 3 or 4 described a kind of equipment that the LDW system is demarcated, upgrades and detects of being used for, it is characterized in that: said video input block connects said core processing unit through a TVP5150 demoder.
6. like claim 1 or 2 or 3 or 4 described a kind of equipment that the LDW system is demarcated, upgrades and detects of being used for, it is characterized in that: said man-machine interaction unit includes button and LCD touch-screen.
7. a kind of equipment that the LDW system is demarcated, upgrades and detects of being used for as claimed in claim 5, it is characterized in that: said man-machine interaction unit includes button and LCD touch-screen.
8. like claim 1 or 2 or 3 or 4 or 7 described a kind of equipment that the LDW system is demarcated, upgrades and detects of being used for, it is characterized in that: said alarm unit comprises an audio alert module and a LED display module.
9. a kind of equipment that the LDW system is demarcated, upgrades and detects of being used for as claimed in claim 5, it is characterized in that: said alarm unit comprises an audio alert module and a LED display module.
10. a kind of equipment that the LDW system is demarcated, upgrades and detects of being used for as claimed in claim 6, it is characterized in that: said alarm unit comprises an audio alert module and a LED display module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101510943A CN102681533A (en) | 2012-05-15 | 2012-05-15 | Equipment for calibrating, upgrading and detecting LDW (Lane Departure Warning) system |
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| CN2012101510943A CN102681533A (en) | 2012-05-15 | 2012-05-15 | Equipment for calibrating, upgrading and detecting LDW (Lane Departure Warning) system |
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Application publication date: 20120919 |