CN202764823U - DSP-based (digital signal processor) vehicle-mounted distance measurement safety early-warning device - Google Patents
DSP-based (digital signal processor) vehicle-mounted distance measurement safety early-warning device Download PDFInfo
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- CN202764823U CN202764823U CN 201220273429 CN201220273429U CN202764823U CN 202764823 U CN202764823 U CN 202764823U CN 201220273429 CN201220273429 CN 201220273429 CN 201220273429 U CN201220273429 U CN 201220273429U CN 202764823 U CN202764823 U CN 202764823U
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Abstract
The utility model discloses a DSP-based (digital signal processor) vehicle-mounted distance measurement safety early-warning device, which comprises a vehicle speed sensor installed near a wheel, a laser radar installed on a front bumper of a vehicle and a reflector installed at the back part of the vehicle, wherein the laser radar is connected with an A/D converter, the laser beam emitted by the laser radar is received by the reflector after being reflected by a barrier and is connected with the A/D converter through a regulator, the vehicle speed sensor is connected with the A/D converter through an amplifier, the A/D converter is connected with a video/imaging fixed point digital signal processor(DSP), and the video/imaging fixed point digital signal processor (DSP) is provided with a liquid crystal display and a voice chip. According to the utility model, the safety distance for vehicle running is calculated, so that the vehicle driven in a dangerous distance can be warned, and the DSP-based vehicle-mounted distance measurement safety early-warning device is small in size, low in cost, high in reliability and strong expansion capability.
Description
Technical field
The utility model relates generally to a kind of motor traffic safety field, relates in particular to a kind of vehicle-mounted range finding safety early warning device based on DSP.
Background technology
In recent years, China's express highway grows out of nothing, now just with high speed development, Freeway Transport with its easily and efficiently advantage to society, play an important role in the economic life, yet, Freeway Transport bring efficient, quick and easy in, also caused heavy damage to the people's lives and property.According to statistics, in the past few years, hundred kilometers incidences of China's traffic accidents are about 4 times of average highway, and great, pernicious traffic accident happens occasionally.And the rear-end collision accident accounts for about 1/3 of China's traffic accidents, has become one of principal mode of China's traffic accidents in recent years.The car tracing cauda accident is formed the analysis showed that of reason, and the generation reason of accident is mainly spacing between driving vehicle less than safety distance.
Summary of the invention
The purpose of this utility model is to provide a kind of vehicle-mounted range finding safety early warning device based on DSP.Namely the advanced laser radar ranging technology of utilization is measured the actual vehiclar gap between driving vehicle, and judges whether the prompting warning with the safety distance contrast.This device can assist the automobile driver of running at high speed that front vehicles is carried out Real Time Monitoring, keeps the operating range of safety, prevents the generation of rear-end collision accident.
To achieve these goals, the utility model adopts following technical scheme to be achieved:
A kind of vehicle-mounted range finding safety early warning device based on DSP is characterized in that, comprises being installed near the car speed sensor of wheel, is installed in the laser radar on the automobile front beam, is installed in the light deflector of automobile rear, wherein:
Laser radar is connected with A/D converter, the laser beam that laser radar sends is received by light deflector after the obstacle reflection, the laser beam that light deflector receives is connected with A/D converter by regulating control, car speed sensor is connected with A/D converter by amplifier, A/D converter is connected with video/imaging fixed-point dsp DSP, on video/imaging fixed-point dsp DSP Liquid Crystal Display and speech chip is arranged.
Other characteristics of the present utility model are:
Be connected with loud speaker on the described speech chip.
The model of described video/imaging fixed-point dsp DSP is selected the TMS320DM642 chip.
Described car speed sensor is selected the XSAV11801 sensor.
The model of described A/D converter is selected the TLC5510 chip.
The model of described laser radar is selected HDL-64E S2.
Described Liquid Crystal Display is selected KNY-24064B graphic dot matrix Chinese type liquid crystal display module.
Described speech chip is selected the SPCE061A chip.
Vehicle-mounted range finding safety early warning device based on DSP of the present utility model adopts the embedded software combination of hardware, realizes sending to the calculating of vehicle operational safety spacing and when being in dangerous running distance warning, volume is little, cost is low, and reliability is strong, has very strong expansion capability.
Description of drawings
Fig. 1 is hardware configuration schematic diagram of the present utility model.
Fig. 2 is workflow diagram of the present utility model.
Below in conjunction with drawings and Examples the utility model is further specified.
The specific embodiment
With reference to Fig. 1, the present embodiment provides a kind of vehicle-mounted range finding safety early warning device based on DSP, and its hardware configuration mainly comprises near the car speed sensor that is installed in the wheel, is installed in the laser radar on the automobile front beam, is installed in the light deflector of automobile rear, wherein:
Laser radar is connected with A/D converter, the laser beam that laser radar sends is received by light deflector after the obstacle reflection, the laser beam that light deflector receives is connected with A/D converter by regulating control, car speed sensor is connected with A/D converter by amplifier, A/D converter is connected with video/imaging fixed-point dsp DSP, on video/imaging fixed-point dsp DSP Liquid Crystal Display and speech chip are arranged, loud speaker is arranged on the speech chip.
Liquid Crystal Display, speech chip and loud speaker are installed on the gauge panel.
In the present embodiment, laser radar is used for range finding, the laser radar model is HDL-64E S2, the camera lens of laser radar forwards shines the infrared laser beam of pulse type, laser beam produces folded light beam after running into obstacle, utilize the light deflector of automobile rear to receive folded light beam, detect its distance by demoder.
The model of car speed sensor is XSAV11801.Its technical parameter: profile: M30 threaded cylindrical; Output form: two lines are often opened; Operating voltage: 20～264VAC/DC; Contact capacity: 5～200mA DC:5～mAAC; Voltage :≤5.7V; Ambient temperature :-25～+ 70 ℃; Detect distance: 4～6mm; Response time: 10～0.4s(6～150 pulses/min).
A/D converter is a kind of high-speed converters, and its model is selected the TLC5510 chip.The TLC5510 chip is the conv (ADC) that CMOS, 8,20MSPS analog quantity turn digital quantity, and it adopts half flash structure (semi-flash architecture).Single 5V working power and power consumption only have the 100mW(representative value) power.Include sampling and lock-out circuit, parallel interface and internal reference resistance with high resistance mode.
The model of Liquid Crystal Display is KNY-24064B.Be a kind of graphic dot matrix Liquid Crystal Display, it is comprised of controller T6963C, line driver/row driver and 240 * 64 full lattice lcd display.Can finish figure and show, also can show 15 * 4 (16 * 16 dot matrix) Chinese characters.
The model of speech chip is SPCE061A.Its volume is little, integrated level is high, good reliability and be easy to the expansion SPCE061A each functional parts moduleization be integrated in 1 chip, the inner bus architecture that adopt, thereby reduced line between each functional component, improved its reliability and antijamming capability.In addition, modular structure is easy to serial expanded.The loud speaker that speech chip connects is KS-09055DY.
The model of video/imaging fixed-point dsp DSP is selected the TMS320DM642 chip, the TMS320DM642 chip is summit DSP up-to-date in the C6000 of the TI company series DSP, its core is C6416 type high-performance digital signal processor, has extremely strong handling property, alerting ability and the programmability of height, peripheral integrated very complete audio frequency simultaneously, the equipment such as video and network service and interface are specially adapted to machine vision, medical imaging, Network Video Surveillance, digital broadcasting and the high-speed dsp applications such as consumer electronics product of processing based on digital video/image.
Vehicle-mounted range finding safety early warning device working process reference based on DSP of the present utility model is shown in Figure 2, and behind the vehicle launch, initialization is carried out in the device power supply.Laser radar is measured driving vehicle spacing d1 in real time, through becoming digital quantity after the A/D converter conversion, exists in the internal storage of video/imaging fixed-point dsp DSP; Meanwhile, tachogenerator is recorded vehicle speed signal, by becoming digital quantity after the A/D converter conversion, is input to video/imaging fixed-point dsp DSP, calculates the vehicle operational safety spacing d2 that obtains in real time through the algorithm of setting.In a certain moment, if d1＜d2, Liquid Crystal Display shows the spaces of vehicles d1 that travels; Otherwise, then sending sound and light alarm, Liquid Crystal Display shows the spaces of vehicles d1 that travels simultaneously.
Claims (8)
1. the vehicle-mounted range finding safety early warning device based on DSP is characterized in that, comprises being installed near the car speed sensor of wheel, is installed in the laser radar on the automobile front beam, is installed in the light deflector of automobile rear, wherein:
Laser radar is connected with A/D converter, the laser beam that laser radar sends is received by light deflector after the obstacle reflection, the laser beam that light deflector receives is connected with A/D converter by regulating control, car speed sensor is connected with A/D converter by amplifier, A/D converter is connected with video/imaging fixed-point dsp DSP, on video/imaging fixed-point dsp DSP Liquid Crystal Display and speech chip is arranged.
2. the vehicle-mounted range finding safety early warning device based on DSP as claimed in claim 1 is characterized in that on the described speech chip loud speaker being arranged.
3. the vehicle-mounted range finding safety early warning device based on DSP as claimed in claim 1 is characterized in that, the model of described video/imaging fixed-point dsp DSP is selected the TMS320DM642 chip.
4. the vehicle-mounted range finding safety early warning device based on DSP as claimed in claim 1 is characterized in that, described car speed sensor is selected the XSAV11801 sensor.
5. the vehicle-mounted range finding safety early warning device based on DSP as claimed in claim 1 is characterized in that, the model of described A/D converter is selected the TLC5510 chip.
6. the vehicle-mounted range finding safety early warning device based on DSP as claimed in claim 1 is characterized in that, the model of described laser radar is selected HDL-64E S2.
7. the vehicle-mounted range finding safety early warning device based on DSP as claimed in claim 1 is characterized in that, described Liquid Crystal Display is selected KNY-24064B graphic dot matrix Chinese type liquid crystal display module.
8. the vehicle-mounted range finding safety early warning device based on DSP as claimed in claim 1 is characterized in that, described speech chip is selected the SPCE061A chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220273429 CN202764823U (en) | 2012-06-11 | 2012-06-11 | DSP-based (digital signal processor) vehicle-mounted distance measurement safety early-warning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220273429 CN202764823U (en) | 2012-06-11 | 2012-06-11 | DSP-based (digital signal processor) vehicle-mounted distance measurement safety early-warning device |
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| Publication Number | Publication Date |
|---|---|
| CN202764823U true CN202764823U (en) | 2013-03-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220273429 Expired - Fee Related CN202764823U (en) | 2012-06-11 | 2012-06-11 | DSP-based (digital signal processor) vehicle-mounted distance measurement safety early-warning device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106218504A (en) * | 2016-08-29 | 2016-12-14 | 芜湖安瑞光电有限公司 | Vehicle driving aid system and control method thereof |
-
2012
- 2012-06-11 CN CN 201220273429 patent/CN202764823U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106218504A (en) * | 2016-08-29 | 2016-12-14 | 芜湖安瑞光电有限公司 | Vehicle driving aid system and control method thereof |
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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: 20130306 Termination date: 20130611 |