CN202358096U - Lane departure warning and recording system based on DSP (Digital Signal Processor) - Google Patents
Lane departure warning and recording system based on DSP (Digital Signal Processor) Download PDFInfo
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- CN202358096U CN202358096U CN2011205027924U CN201120502792U CN202358096U CN 202358096 U CN202358096 U CN 202358096U CN 2011205027924 U CN2011205027924 U CN 2011205027924U CN 201120502792 U CN201120502792 U CN 201120502792U CN 202358096 U CN202358096 U CN 202358096U
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Abstract
The utility model discloses a lane departure warning and recording system based on DSP (Digital Signal Processor). The device comprises a DSP singlechip, a vehicle travelling parameter collecting singlechip connected with a can bus, a data memory, a liquid crystal display, a buzzer, a light emitting diode and a CCD image sensor installed at the front end of the vehicle, wherein the CCD image sensor is connected with the DSP singlechip through an image decoder, the vehicle travelling parameter collecting singlechip, the data memory and the liquid crystal display are respectively connected with the DSP singlechip, and the buzzer and the light emitting diode are respectively connected with the vehicle travelling parameter collecting singlechip. Through accurately analyzing the position information of the vehicle on the road and the travelling state of the vehicle, the device can give an alarm and make recording in the case of lane departure of the vehicle; and the lane departure warning and recording system based on DSP is an effective vehicle-mounted security auxiliary device with high flexibility.
Description
Technical field
The utility model belongs to the motor traffic safety technical field, is specifically related to a kind of deviation caution recording device based on DSP.
Background technology
The trap for automobile traffic accident is global disaster; Therefore motor traffic safety also is a global difficult problem; In the road running process; A lot of rising owing to chaufeur is taken sb's mind off sth or operated the caused traffic accident of reason all can be taken place every year, therefore when vehicle be about in the hole before, fast, accurately, timely chaufeur to be carried out early warning be very necessary.
Summary of the invention
To the defective or the deficiency of prior art, the purpose of the utility model is to provide the high deviation of a kind of intelligent degree to warn recording device.
For realizing above-mentioned technical assignment, the utility model is taked following technical solution:
A kind of deviation caution recording device based on DSP; It is characterized in that; Comprise the DSP micro controller system, with can bus bonded assembly vehicle ' parameter acquisition micro controller system, data memory, Liquid Crystal Display (LCD), buzzer phone, light-emitting diode be installed on the ccd image sensor of vehicle front; Said ccd image sensor is connected with the DSP micro controller system through image decoder; Said vehicle ' parameter acquisition micro controller system, data memory and Liquid Crystal Display (LCD) are connected with the DSP micro controller system respectively, and said buzzer phone is connected with vehicle ' parameter acquisition micro controller system respectively with light-emitting diode.
Said DSP micro controller system adopts TMS320DM642 DSP micro controller system.
Said vehicle ' parameter acquisition micro controller system adopts the MC9S12XS128 micro controller system.
Said ccd image sensor employing 1/4 " the special-purpose CCD module of SONY machine vision.
Said image decoder adopts the TVP5150 image decoder.
Said data memory adopts Barracuda 7200 memory devices.
Said Liquid Crystal Display (LCD) adopts the FYD12864-0402B Liquid Crystal Display (LCD).
Said buzzer phone adopts the CY-12055 buzzer phone, and said light-emitting diode adopts the SMD0805 light-emitting diode.
The device of the utility model can accurately be analyzed the location information of vehicle in road, correctly judges the motoring condition of vehicle, when automotive run-off-road, gives early warning and record; Device adopts the method for embedded software and hardware combining to realize the collection analysis to road based on the deviation caution recording device of DSP, can reduce the complexity of equipment, and greatly alerting ability is arranged, and is a kind of actv. on-vehicle safety auxiliary device.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the image processing workflow scheme drawing of DSP micro controller system.
Below in conjunction with accompanying drawing and embodiment the utility model is done further to specify.
The specific embodiment
The device of the utility model is embedded type C CD (the Charge Coupled Device in integrated use ergonomics, computer graphics, information engineering, Vehicle Engineering, traffic engineering, the computer vision technique; CCD) image sensing acquisition technique, embedded high-speed DSP (digital signal Processor; Digital signal microprocessor) image processing techniques, atural object shape edges detection technique, high-speed motion thing SHAPE DETECTION analytical technology and mode identification technology; Can detect the distance of vehicle in real time apart from roadmarking; When vehicle is in the hole, carries out early warning and store the image in this moment.
Embodiment:
With reference to Fig. 1; A kind of deviation caution recording device based on DSP that present embodiment provides comprises TMS320DM642 DSP micro controller system, with can bus bonded assembly MC9S12XS128 micro controller system, Barracuda 7200 data memoryes, FYD12864-0402B Liquid Crystal Display (LCD), CY-12055 buzzer phone, SMD0805 light-emitting diode be installed on 1/4 " the special-purpose ccd image sensor of SONY machine vision; said ccd image sensor is connected with the DSP micro controller system through the TVP5150 image decoder; said MC9S12XS128 micro controller system, data memory and Liquid Crystal Display (LCD) are connected with the DSP micro controller system respectively, and said buzzer phone is connected with the MC9S12XS128 micro controller system respectively with light-emitting diode of vehicle front.
Ccd image sensor is installed in the track of the inboard and oblique directed forward of front part of vehicle Windshield, is used to gather road information; This ccd image sensor scan mode is a pal mode; Image pixel reaches 300,000 pixels (500 * 582); Horizontal definition is 420TVL (tv line); Through the CCS software development environment this ccd image sensor is carried out initial configuration, ccd video camera is taken the instantaneous picture of the place ahead environment at short notice, then through TVP5150 image decoding chip image signal transmission in image digital signal treater TMS320DM642;
The turn sign of vehicle and GES are to pass to the MC9S12XS128 micro controller system through vehicle CAN bus; The MC9S12XS128 micro controller system obtains turn sign and GES through the CAN bus of vehicle; Signal according to obtaining calculates the instant parameter of going of vehicle, sends to TMS320DM642 to the speed and the pole changer signal that collect through the RS232 serial port again;
Its core of TMS320DM642 DSP micro controller system is a C6416 type high-performance digital signal processor, has extremely strong handling property, the alerting ability and the programmability of height, simultaneously peripheral integrated very complete equipment and interface such as audio frequency, video and network service.The coloured image that ccd image sensor collects is converted into gray level image after handling through DSP (digital signal processor), utilizes image processing algorithms such as median filtering method, Sobel Operator Method and thresholding method to obtain binary image;
The FYD12864-0402B LCD MODULE is a kind of have 4/8 bit parallels, 2 lines or 3 line serial multiple interfaces modes; Display resolution is 128*64; The matrix magazine of built-in standard; Adopting serial interface mode that it is visited, is the SPI standard protocol interface, shows this image constantly after obtaining the automotive run-off-road signal.
Barracuda 7200 memory devices adopt H.264 High Performance video compression technology, and its maximum advantage is to have very high data compression ratio, and under the condition of equal picture quality, compression ratio H.264 is more than 2 times of MPEG-2, is 1.5～2 times of MPEG-4; In addition, H.264 when having high compression ratio, also have the smooth image of high quality, can realize the local high capacity image storage of common hard disk;
When the steering indicating light of vehicle is not opened and vehicle when being about to run-off-road and going, the MC9S12DG128 micro controller system sends a high level and triggers that optical diode is luminous to give the alarm with buzzer phone, this means that vehicle is in alarm condition, reminds the driver to note driving.
With reference to Fig. 2; Ccd image sensor is gathered the realtime graphic of the place ahead environment at short notice; Then through TVP5150 image decoding chip image signal transmission in image processor TMS320DM642 micro controller system; After the image processing through the DSP micro controller system, be converted into gray level image to coloured image, utilize image processing algorithms such as median filtering method, Sobel Operator Method and thresholding method to obtain binary image.After vehicle CAN bus speed signal that collects and the filtering that turns to make-and-break signal through signal processing circuit, amplification, pass to the MC9S12DG128 micro controller system; Again through the RS232 serial port the speed that collects with turn to make-and-break signal to send to the TMS320DM642 micro controller system; The TMS320DM642 micro controller system obtains beginning run duration when vehicle begins to contact with lane mark (the time to lane crossing that crosses over the track time from the vehicle current location according to the speed of a motor vehicle and after treatment lane mark; TLC); Whether the TMS320DM642 micro controller system triggers the work of light emitting diode and buzzer phone according to the TLC signal control MC9S12DG128 micro controller system of turn sign and gained then, and concrete control process is following:
When not collecting turn sign: during TLC＜0.8 second, vehicle center is described near the center, track, from crossing over the track time also long, the early warning of not setting out of MC9S12DG128 micro controller system; When 0.4＜TLC＜0.8 second, vehicle center some distance of run-off-road center is described, it is also shorter to cross over the track time, and early warning is awaited orders; When TLC＜0.4 second; Vehicle center run-off-road center one segment distance is described; Very short from the leap track time, this timed unit is in limit risk, and the MC9S12DG128 micro controller system in time triggers early warning issue warning and stores the image of gathering this moment in the data memory into.
Because environmental differences; Make that the road image characteristic of actual acquisition is different,, improve the reliability of device in order to improve the validity of algorithm; The road image of gathering is carried out pattern classification according to the illumination characteristic of image such as high light, the low light level; And carry out the image pretreatment to different classification, and mainly be that original road image is carried out denoising and figure image intensifying, purpose is the useful zone that reduces in noise jamming, the outstanding image.For detected edge image under the different illumination conditions, adopt the binaryzation dividing method of adaptive threshold, extract the edge of image characteristic, carry out some Filtering Processing again, in the hope of removing these interference.
Used various electronic devices and components all are commercially available known product in the device of the utility model, and those skilled in the art can realize the connection of each electronic devices and components according to the technique effect of the utility model.
Claims (8)
1. deviation caution recording device based on DSP; It is characterized in that; Comprise the DSP micro controller system, with can bus bonded assembly vehicle ' parameter acquisition micro controller system, data memory, Liquid Crystal Display (LCD), buzzer phone, light-emitting diode be installed on the ccd image sensor of vehicle front; Said ccd image sensor is connected with the DSP micro controller system through image decoder; Said vehicle ' parameter acquisition micro controller system, data memory and Liquid Crystal Display (LCD) are connected with the DSP micro controller system respectively, and said buzzer phone is connected with vehicle ' parameter acquisition micro controller system respectively with light-emitting diode.
2. the deviation caution recording device based on DSP as claimed in claim 1 is characterized in that said DSP micro controller system adopts the TMS320DM642DSP micro controller system.
3. the deviation caution recording device based on DSP as claimed in claim 1 is characterized in that said vehicle ' parameter acquisition micro controller system adopts the MC9S12XS128 micro controller system.
4. the deviation caution recording device based on DSP as claimed in claim 1 is characterized in that, said ccd image sensor employing 1/4 " the special-purpose CCD module of SONY machine vision.
5. the deviation caution recording device based on DSP as claimed in claim 1 is characterized in that said image decoder adopts the TVP5150 image decoder.
6. the deviation caution recording device based on DSP as claimed in claim 1 is characterized in that said data memory adopts Barracuda 7200 memory devices.
7. the deviation caution recording device based on DSP as claimed in claim 1 is characterized in that said Liquid Crystal Display (LCD) adopts the FYD12864-0402B Liquid Crystal Display (LCD).
8. the deviation caution recording device based on DSP as claimed in claim 1 is characterized in that said buzzer phone adopts the CY-12055 buzzer phone, and said light-emitting diode adopts the SMD0805 light-emitting diode.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205027924U CN202358096U (en) | 2011-12-06 | 2011-12-06 | Lane departure warning and recording system based on DSP (Digital Signal Processor) |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011205027924U CN202358096U (en) | 2011-12-06 | 2011-12-06 | Lane departure warning and recording system based on DSP (Digital Signal Processor) |
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| CN2011205027924U Expired - Fee Related CN202358096U (en) | 2011-12-06 | 2011-12-06 | Lane departure warning and recording system based on DSP (Digital Signal Processor) |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI493513B (en) * | 2013-01-08 | 2015-07-21 | Pixart Imaging Inc | Lane departure warning system and lane identification apparatus and related method thereof |
| CN105043256A (en) * | 2015-08-07 | 2015-11-11 | 重庆铸豪机械有限责任公司 | Device for automatically detecting accuracy of electric machinery end cap |
| WO2015169312A1 (en) * | 2014-05-08 | 2015-11-12 | Continental Teves Ag & Co. Ohg | Driver assistance system and method for automatically logging log data |
| CN106004884A (en) * | 2016-07-11 | 2016-10-12 | 南昌工学院 | Method and system for realizing real-time identification and danger judgment of road conditions based on complex sensing |
| CN107544350A (en) * | 2017-10-09 | 2018-01-05 | 长安大学 | A kind of passenger stock transport condition parameter real-time acquisition system |
-
2011
- 2011-12-06 CN CN2011205027924U patent/CN202358096U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI493513B (en) * | 2013-01-08 | 2015-07-21 | Pixart Imaging Inc | Lane departure warning system and lane identification apparatus and related method thereof |
| US9286805B2 (en) | 2013-01-08 | 2016-03-15 | Pixart Imaging Inc. | Lane departure warning system, lane identification apparatus and related method thereof |
| US9785844B2 (en) | 2013-01-08 | 2017-10-10 | Pixart Imaging Inc. | Lane identification method and related apparatus thereof |
| WO2015169312A1 (en) * | 2014-05-08 | 2015-11-12 | Continental Teves Ag & Co. Ohg | Driver assistance system and method for automatically logging log data |
| US10343697B2 (en) | 2014-05-08 | 2019-07-09 | Continental Teves Ag & Co. Ohg | Driver assistance system and method for automatically logging log data |
| CN105043256A (en) * | 2015-08-07 | 2015-11-11 | 重庆铸豪机械有限责任公司 | Device for automatically detecting accuracy of electric machinery end cap |
| CN106004884A (en) * | 2016-07-11 | 2016-10-12 | 南昌工学院 | Method and system for realizing real-time identification and danger judgment of road conditions based on complex sensing |
| CN107544350A (en) * | 2017-10-09 | 2018-01-05 | 长安大学 | A kind of passenger stock transport condition parameter real-time acquisition system |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120801 Termination date: 20121206 |