CN103419737B - A kind of anti-collision control method for vehicle and system - Google Patents
A kind of anti-collision control method for vehicle and system Download PDFInfo
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- CN103419737B CN103419737B CN201310356219.0A CN201310356219A CN103419737B CN 103419737 B CN103419737 B CN 103419737B CN 201310356219 A CN201310356219 A CN 201310356219A CN 103419737 B CN103419737 B CN 103419737B
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Abstract
The invention discloses a kind of anti-collision control method for vehicle and system.Described system comprises ultrasonic distance measuring module (1), IR laser module (2), photoelectric conversion module (3), anticollision control module (4) and read-out (5).Described ultrasonic distance measuring module (1) is for the distance of the obstacle of measuring vehicle and vehicle periphery, by find range from preset alert distance and compare, export control signal according to comparative result to described IR laser module (2) and described anticollision control module (4).Described IR laser module (2) is for launching infrared ray to the obstacle near vehicle.Described optical signal, for gathering the optical signal through obstacle reflection, is converted to electric signal by described photoelectric conversion module (3).Described anticollision control module (4), and to give a warning to vehicle driver with the view data of dyspoiesis thing for the treatment of described electric signal.Described read-out (5) is for showing the view data of obstacle.
Description
Technical field
The present invention relates to safe driving of vehicle technical field, more particularly, relate to a kind of anti-collision control method for vehicle and system.
Background technology
Fatigue driving is one of key factor causing various traffic accident.User easily produces fatigue in the process of driving over a long distance, and there will be absent minded, the situation of even dozing off.The scheme that the active anti-corrosion control system of prior art is taked be obstacle near driving vehicle time, by carrying out alerting by vibration user to seat, associative operation is carried out, with avoiding obstacles to vehicle.As user is in fatigue driving state, and not to be noted gradually near the obstacle of vehicle.When vehicle speed is very fast, and during close together between vehicle and obstacle, even if user senses the vibration of seat, recognize imminent collision risk, and promptly adjust the travel direction of vehicle, or acceleration/deceleration operation is carried out to vehicle, late.Under the effect of inertia of vehicle, user action is fast again, still cannot avoid the generation of the collision case of vehicle and obstacle.Therefore, user needs to focus one's attention on for a long time in the process of driving over a long distance, and user is the careless and inadvertent tragedy that may lead to car crash for the moment.How to develop a active anti-corrosion control system of the driving safety of the user that drives over a long distance of effectively protecting and become problem demanding prompt solution.
Summary of the invention
The technical problem to be solved in the present invention is, above-mentioned defect for prior art provides a kind of and can change according to the distance of vehicle and its peripheral obstacle, automatic display is near the obstructions chart picture of vehicle, and the anti-collision control method for vehicle sent based on the warning signal in orientation, obstacle place and system.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of anti-collision control method for vehicle, said method comprising the steps of:
S1) measure the vehicle in travelling and the distance between the obstacle of this vehicle periphery, the distance of institute's measuring car and obstacle and preset being used for are judged whether that the warning distance that should give a warning to the chaufeur of described vehicle compares;
S2) warning distance as described in the distance as vehicle as described in determining and obstacle is equal to or less than, then the chaufeur to described vehicle gives a warning, and launches infrared ray to the obstacle near described vehicle simultaneously;
S3) gather the infrared ray through blocking surfaces reflection, obtain the view data of obstacle;
S4) to the view data of the chaufeur display obstacle of described vehicle.
State on the invention in the anti-collision control method for vehicle, also comprise the steps:
S0) before described step S1, described warning distance is prestored, and for judging whether the braking distance that brake immediately.
State in the anti-collision control method for vehicle on the invention, measure the vehicle in travelling and the operation of distance between the obstacle of this vehicle periphery comprises: start timing starting to launch hypracoustic to the obstacle of vehicle periphery in described step S1 simultaneously, and stop timing when receiving the echoed signal through blocking surfaces reflection, first calculate the time difference of the time of the time starting timing and stopping timing, the distance between vehicle in traveling and the obstacle of this vehicle periphery is calculated in conjunction with the propagation speed in super sonic again air again by the described time difference.
State in the anti-collision control method for vehicle on the invention, described step S2 also comprises: as determined the distance of measuring car and preceding object thing be no more than as described in warning distance, then further the distance of institute's measuring car and preceding object thing and described braking distance are compared; Braking distance as described in distance as vehicle as described in determining and preceding object thing is equal to or less than, then carry out brake operating to described vehicle, make the speed of a motor vehicle of described vehicle reduce to 0.
The present invention also constructs a kind of anticollision control system for vehicle, described system comprises ultrasonic distance measuring module, the IR laser module be connected with the mouth of described ultrasonic distance measuring module, the photoelectric conversion module be connected with the mouth of described IR laser module, the anticollision control module be connected with the mouth of described photoelectric conversion module and described ultrasonic distance measuring module, and the read-out to be connected with the mouth of described anticollision control module, described ultrasonic distance measuring module is used for the distance between measuring vehicle and the obstacle of vehicle's surroundings, by find range from its storage be used for judge whether that the warning distance that should give a warning to the chaufeur of described vehicle compares, and export control signal according to comparative result to described IR laser module and described anticollision control module, described IR laser module is used under the control of described ultrasonic distance measuring module, infrared ray is launched to the obstacle near vehicle, described photoelectric conversion device is for gathering the optical signal through blocking surfaces reflection, and described optical signal is converted to electric signal, described anticollision control module for the treatment of this electric signal with the view data of dyspoiesis thing, and for receiving the alarm command of described ultrasonic distance measuring module (1), and send alerting signal, described read-out is for showing the view data of described obstacle.
State in the anticollision control system for vehicle on the invention, described ultrasonic distance measuring module comprises launches hypracoustic ultrasonic transmitting element for the obstacle to vehicle periphery, for receiving the ultrasonic wave receive unit of the echoed signal reflected by blocking surfaces, for starting timing when described ultrasonic transmitting element launches super sonic, and the timing unit of timing is stopped when described ultrasonic wave receive unit receives described echoed signal, for storing the first memory cell of described warning distance, with described ultrasonic transmitting element, described ultrasonic wave receive unit is connected with described timing unit, for calculating the distance between vehicle and the obstacle of vehicle's surroundings according to the timing time difference of described timing unit, by find range from described warning distance and compare, and export the MCU of control signal to described IR laser module and described anticollision control module according to comparative result.
State in the anticollision control system for vehicle on the invention, described anticollision control module comprises and being connected with the mouth of described photoelectric conversion module, for carrying out the amplifying circuit amplifying process to described electric signal, for carrying out the filter circuit of filtering process to described electric signal, for described electric signal being converted to the analog to digital conversion circuit of digital signal, calculate for carrying out imaging to described digital signal with the view data of dyspoiesis thing, and for receiving the alarm command of described ultrasonic distance measuring module, run the CPU of alert program, for storing the second memory cell of the view data of obstacle, for the loudspeaker unit sent warning signal, and for carrying out the speed of a motor vehicle control unit of brake operating to described vehicle.
State in the anticollision control system for vehicle on the invention, first memory cell of described ultrasonic distance measuring module also stores for judging whether the braking distance that brake immediately, described braking distance is less than described warning distance, described ultrasonic distance measuring module is when also for determining, the distance of measuring car and preceding object thing is less than described warning distance, further the distance of institute's measuring car and preceding object thing and described braking distance are compared, and when determining, measuring car is equal to or less than described braking distance with the distance of preceding object thing, control described speed of a motor vehicle control unit by described CPU and brake operating is carried out to described vehicle.
State in the anticollision control system for vehicle on the invention, described CPU also for controlling the emissive power of described IR laser module, the ultrared Illumination intensity of launching to regulate described IR laser module.
Implement the anti-collision control method for vehicle of the present invention and system, there is following beneficial effect: 1) the present invention is used for the anticollision control system of vehicle is that those need the user driven over a long distance to provide great convenience, anticollision control system of the present invention auxiliary under, user watches the obstructions chart picture of vehicle periphery in real time by read-out, and reception is broadcasted based on the prompting in orientation, obstacle place, when distance between vehicle and obstacle is equal to or less than the warning distance of user preset, anticollision control system of the present invention demonstrates the image of obstacle on a display screen automatically, and the alarm voice play based on this orientation, obstacle place, user is reminded in advance, user can according to obstructions chart picture shown on read-out, and the warning voice reported carry out associative operation to vehicle, the dangerous obstacles near vehicle can be avoided in time, the present invention is used for the incidence that the anticollision control system of vehicle can reduce the collision case between driving vehicle and the obstacle around it, 2) distance between vehicle and obstacle is more and more nearer, when distance between vehicle and obstacle is equal to or less than the warning distance of user preset, anticollision control system of the present invention is first shown by the image of dangerous obstacles and auxiliary prompting broadcast is warned in advance to user, when above-mentioned warning measure can not play reminding effect to user, when the distance that anticollision control system of the present invention determines the obstacle of vehicle and vehicle front is equal to or less than the braking distance of user preset, anticollision control system of the present invention will start preventing collision protection function automatically, run brake program, emergency brake operations is carried out to vehicle, to avoid the obstacle generation rear-end collision of vehicle and vehicle front, therefore the present invention is used for the incidence that the anticollision control system of vehicle can reduce vehicle collides therewith widely, 3) user can also control the ultrared Illumination intensity of IR laser module injection by the emissive power of adjustment IR laser module, to obtain more clear bright obstructions chart picture.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the structured flowchart of the anticollision control system for vehicle that present pre-ferred embodiments provides;
Fig. 2 is the structured flowchart of the ultrasonic distance measuring module of the anticollision control system for vehicle shown in Fig. 1;
Fig. 3 is the structured flowchart of the anticollision control module of the anticollision control system for vehicle shown in Fig. 1;
Fig. 4 is the diagram of circuit of the anti-collision control method for vehicle that present pre-ferred embodiments provides.
Detailed description of the invention
In order to make object of the present invention clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As shown in Figure 1, the anticollision control system 19 that the present invention is used for vehicle comprises for the distance between measuring vehicle and vehicle's surroundings obstacle, by find range from preset the warning distance being used for judging whether to give a warning to the chaufeur of vehicle, or for judging whether that the braking distance that brake immediately compares, and the ultrasonic distance measuring module 1 of alarm command or brake instruction is sent according to comparative result, for under the control of this ultrasonic distance measuring module 1, ultrared IR laser module 2 is launched to the obstacle near vehicle, for gathering the optical signal of the graphicinformation of the characterizing disorders thing through blocking surfaces reflection, and this optical signal is converted to the photoelectric conversion module 3 of electric signal, for receiving alarm command or the brake instruction of this ultrasonic distance measuring module 1, send warning signal or brake operating is carried out to vehicle, and for processing this electric signal, the anticollision control module 4 of the view data of dyspoiesis thing, for showing the read-out 5 of the view data of obstacle.
The input end of this IR laser module is connected with the mouth of ultrasonic distance measuring module 1, and its mouth is connected to photoelectric conversion module 3.The input end of this anticollision control module is connected with the mouth of ultrasonic distance measuring module 1 and photoelectric conversion module 3, and its mouth is connected to read-out 5 and IR laser module 2.This anticollision control module 4 also for controlling the emissive power of this IR laser module 2, with the ultrared Illumination intensity regulating this IR laser module 2 to launch.
Wherein, this ultrasonic distance measuring module 1 can be existing ultrasonic range finder, this IR laser module 2 can be existing infrared laser, this photoelectric conversion module 3 can be existing charge-coupled device (Charge-coupledDevice), and this read-out 5 can be existing Liquid Crystal Display or plasma display.This warning distance is greater than this braking distance.
As shown in Figure 2, this ultrasonic distance measuring module 1 comprises the first memory cell for storing warning distance and braking distance, hypracoustic ultrasonic transmitting element 6 is launched for the obstacle to vehicle periphery, for receiving the ultrasonic wave receive unit 7 of the echoed signal through blocking surfaces reflection, for starting timing when this ultrasonic transmitting element 6 launches super sonic, and the timing unit 9 of timing is stopped when this ultrasonic wave receive unit 7 receives this echoed signal, poor with the timing time of the time stopping timing for the beginning timing time according to this timing unit 9, and calculate the distance between vehicle and the obstacle of vehicle periphery in conjunction with the aerial propagation speed of super sonic, by find range from above-mentioned warning distance or braking distance and compare, and the MCU8 (MicroControlUnit) of to give a warning according to comparative result instruction or brake instruction.The input end of this MCU8 is connected with ultrasonic wave receive unit 7, and its mouth is connected to ultrasonic transmitting element 6, timing unit 9 and IR laser module 2.And this MCU8 and the first memory cell 10 input end and mouth each other.This timing unit 9 can be existing time meter, and this first memory cell 10 can be existing read-only memory (ROM) (ReadOnlyMemory).
As shown in Figure 3, this anticollision control module 4 comprises and being connected with the mouth of this photoelectric conversion module 3, electric signal for being changed by this photoelectric conversion module 3 carries out the amplifying circuit 12 amplifying process, be connected with the mouth of this amplifying circuit 12, for carrying out the filter circuit 13 of filtering process to this electric signal, be connected with the mouth of this filter circuit 13, for the electric signal of this amplification and filtering process being converted to the analog to digital conversion circuit 14 of digital signal, be connected with the mouth of this analog to digital conversion circuit 14, for carrying out imaging calculating according to digital image processing algorithm to this digital signal, with the CPU15 of the view data of dyspoiesis thing.The input end of this CPU15 is connected with the mouth of analog to digital conversion circuit 14 and ultrasonic distance measuring module 1, and its mouth is connected to IR laser module 2, loudspeaker unit 17, read-out 5 and speed of a motor vehicle control unit 18.This CPU15 is also for receiving the alarm command of ultrasonic control module 1, the image of the obstacle near vehicle is shown by read-out 5, and play preset warning voice by loudspeaker unit 17, avoid the dangerous obstacles near vehicle in time with reminding user.This CPU15, also for receiving the brake instruction of ultrasonic distance measuring module 1, carrying out emergency brake operations by speed of a motor vehicle control unit 18 pairs of vehicles, making this vehicle speed reduce to 0 at short notice, to avoid the obstacle generation rear-end collision of vehicle and this vehicle front.
The anticollision control system that the present invention is used for driving vehicle also comprises a microphone 11.The mouth of this microphone 11 is connected to the input end of analog to digital conversion circuit 14.This microphone 11 is for gathering the voice signal of user.The voice signal of user's input, after analog to digital conversion circuit 14 and CPU15 process respectively, is converted to digitized voice signal and is stored in the second memory cell, as the warning voice that loudspeaker unit 17 is play to user.User can the warning voice that carry of choice for use anticollision control system of the present invention.User also according to self needs, can carry out the warning voice of the various personalization of typing by microphone 11.The step of user's typing warning voice is as follows: S1) user is by microphone 11 input speech signal; S2) microphone 11 gathers the voice signal of user, after this voice signal is converted to electric signal, sends to analog to digital conversion circuit 14 to process; S3) this electric signal is converted to digitized voice signal by analog to digital conversion circuit 14, and CPU15 receives this digitized voice signal, and extracts the characteristic data in this digitized voice signal, this characteristic data is stored in the second memory cell 16.In better embodiment of the present invention, voice or the warning voice that carry of present system of user's input comprise " obstacle appears in forward/rear; ask Reduced Speed Now/give it the gun ", " there is obstacle in left/right, please keep right/left lateral sails, and please keep spacing ".
Wherein, this CPU15 can be the existing mobile treater based on ARM framework or digital signal processor (DigitalSignalProcessor).This second memory cell 16 can be existing hard disk or flash memory.This speed of a motor vehicle control unit 18 can be existing automobile brake system.
The anti-collision control method that the present invention is used for vehicle comprises the following steps:
S1) measure the vehicle in travelling and the distance between the obstacle of this vehicle periphery, the distance of institute's measuring car and obstacle and preset being used for are judged whether that the warning distance that should give a warning to the chaufeur of described vehicle compares;
S2) warning distance as described in the distance as vehicle as described in determining and obstacle is equal to or less than, then the chaufeur to described vehicle gives a warning, and launches infrared ray to the obstacle near described vehicle simultaneously;
S3) gather the infrared ray through blocking surfaces reflection, obtain the view data of obstacle;
S4) to the view data of the chaufeur display obstacle of described vehicle.
Below will for better embodiment of the present invention, principle of work the present invention being used for the anticollision control system of vehicle is described further:
As shown in Figure 4, in the step s 100, what user opened ultrasonic distance measuring module 1 arranges interface, enter the warning distance setting options of vehicle under anticollision distance setting options that this arranges interface and obstacle, arrange under these warning distance setting options for judging whether the warning distance that the chaufeur of tackling vehicle gives a warning, and open the obstacle Presentation Function option corresponding with this warning distance option and warning function option.After user preserves above-mentioned setting, the anticollision distance entering this ultrasonic distance measuring module 1 again arranges the braking distance setting options under interface, arrange under these braking distance setting options for judging whether the braking distance that brake immediately, and open the brake function option corresponding with this braking distance.After user preserves above-mentioned setting, that exits ultrasonic distance measuring module 1 arranges interface.
What user opened anticollision control module 4 arranges interface, enters the emissive power option that this anticollision control module 4 arranges the IR laser module under interface, suitably regulates the emissive power of IR laser module 2.The Illumination intensity of user by regulating the emissive power of IR laser module 2 to improve or reduce the Infrared that this IR laser module 2 is launched to obstacle, catch and reduce the image detail of meticulousr obstacle to be flutterred by photoelectric conversion module 3 and anticollision control module 4, obtain more clear bright obstructions chart picture.
In step s 200, ultrasonic distance measuring module 1 is controlled ultrasonic transmitting element 6, ultrasonic wave receive unit 7 and timing unit 9 by MCU8, to detect the obstacle of the surrounding near vehicle, calculates the distance between vehicle and the obstacle of this vehicle's surroundings.When this ultrasonic transmitting element 6 launches super sonic, this MCU8 sends the control signal of timing to timing unit 9.After timing unit 9 receives control signal, open clocking capability.When ultrasonic wave receive unit 7 receives echoed signal, MCU8 sends the control signal stopping timing to timing unit 9, make timing unit 9 stop timing.This MCU8 calculates the time difference of the time of the unlatching timing of this timing unit 9 and the time of stopping timing, the distance between vehicle and obstacle is gone out according to ultrasonic ranging formulae discovery, by find range from the warning distance or braking distance with user preset and compare, and to give a warning instruction or brake instruction to above-mentioned anticollision control module 4 according to comparative result.
In step S300, this MCU8 judges that the distance of its measuring car and obstacle is greater than warning distance, then this MCU8 continues the distance coming between measuring vehicle and the obstacle of vehicle periphery according to step S200, by find range from above-mentioned warning distance and compare.
In step S300, this MCU8 judges that its measuring car is less than or equal to above-mentioned warning distance with the distance of obstacle, then this MCU8 sends alarm command to anticollision control module 4, sends the control signal irradiating target obstacle to IR laser module 2 simultaneously.
In step S400, after this IR laser module 2 receives the instruction of MCU8, launch infrared ray to the target obstacle near vehicle.Infrared radiation is reflected behind the surface of target obstacle.
In step S500, photoelectric conversion module 2 gathers through blocking surfaces reflection, and the optical signal of the graphicinformation of characterizing disorders thing, is converted to electric signal by this optical signal, then this electric signal is issued anticollision control module 4 processes.Anticollision control module 4 receives this electric signal by amplifying circuit 12.This electric signal is after amplifying circuit 12 and filter circuit 13 carry out amplification and filtering process respectively, and this electric signal is sent to analog to digital conversion circuit 14 by filter circuit 13.Analog to digital conversion circuit 14 receives the electric signal of this amplification and filtering process, sends to CPU15 after this electric signal is converted to digital signal.CPU15 receives the digital signal that analog to digital conversion circuit 14 is changed, according to digital image processing algorithm, imaging calculating is carried out to this digital signal, extract the view data of the obstacle in this digital signal, the view data of the obstacle of this extraction is stored in the second memory cell 16.
In step S600, the view data of obstacle is sent to read-out 5 by CPU15, and read-out 5 receives the view data of obstacle and shows the view data of obstacle.Meanwhile, this CPU15 sends the control signal playing warning voice to loudspeaker unit 17.After loudspeaker unit 17 receives control signal, the warning voice based on orientation, obstacle place are play to user, the speed of a motor vehicle of vehicle is improved/reduces with reminding user, or the travel direction of vehicle is adjusted by bearing circle, to avoid colliding between vehicle and obstacle, improve the driving safety of user.
Therefore whether the anticollision control system 19 that the present invention is used for vehicle the distance between automatic decision vehicle and obstacle can be positioned at warning distance scope, and the image of the obstacle near vehicle is obtained according to judged result, and the warning voice reported based on orientation, obstacle place, user is reminded in advance.User is by the obstructions chart picture of display on read-out 5, and the warning voice that loudspeaker unit 17 is reported carry out associative operation to vehicle, to avoid those gradually near the obstacle of vehicle, efficiently avoid the generation of the collision case between vehicle and obstacle.
In step S700, the distance that this ultrasonic distance measuring module 1 judges between its measuring car and preceding object thing is positioned between the distance regions that above-mentioned warning distance and braking distance form, then this ultrasonic distance measuring module 1 sends alarm command by MCU8 to anticollision control module 4.This anticollision controls mould fast 4 and receives alarm command by CPU15, and the image of obstacle is obtained according to above-mentioned steps S400 to S600, on read-out 5, display is near the graphicinformation of the peripheral obstacle of vehicle, and play the warning voice based on orientation, obstacle place by loudspeaker unit 17, with reminding user, associative operation is carried out to vehicle, avoid those gradually near the dangerous obstacles of vehicle.
In step S700, this ultrasonic distance measuring module 1 judges that its measuring car is less than braking distance with the distance of preceding object thing, then this ultrasonic distance measuring module 1 sends brake instruction to anticollision control module 4.After this anticollision control module 4 receives brake instruction by CPU15, judge that user has been in the driving condition be in extreme danger, vehicle can collide with the obstacle of vehicle front at any time.This anticollision control module 4 runs brake program by CPU15, sends the control signal of braking to speed of a motor vehicle control unit 18.After this speed of a motor vehicle control unit receives control signal, emergency brake operations is carried out to vehicle, make the speed of a motor vehicle of vehicle reduce to 0 at short notice.
Compared with prior art, the present invention has plurality of advantages for the anticollision control system 19 of driving vehicle.
The anticollision control system 19 that the present invention is used for vehicle according to the distance change between vehicle and the obstacle of vehicle periphery, can show the obstructions chart picture near vehicle, and plays the warning voice based on orientation, obstacle place automatically.
Be used in the present invention the anticollision control system 19 of vehicle auxiliary under, user is by the brilliant image of read-out 5 obstacle of viewing vehicle's surroundings in real time, and various prompting received based on orientation, obstacle place are broadcasted.When user is in tired motoring condition, when there is scatterbrained situation, the dangerous obstacles of user's not to be noted vehicle front appearance.Distance between vehicle and obstacle is more and more nearer, when distance between vehicle and obstacle is equal to or less than the warning distance of user preset, anticollision control system 19 of the present invention is first shown by the image of dangerous obstacles and auxiliary prompting broadcast is warned in advance to user.When above-mentioned warning measure can not play reminding effect to user, when the distance that anticollision control system 19 of the present invention determines the obstacle of vehicle and vehicle front is equal to or less than the braking distance of user preset, user sits on a volcano.Now, anticollision control system 19 of the present invention will start preventing collision protection function automatically, run brake program, carry out emergency brake operations, to avoid the obstacle generation rear-end collision of vehicle and vehicle front to vehicle.Therefore the present invention is used for the incidence that the anticollision control system 19 of vehicle can reduce vehicle collides therewith widely.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. for an anti-collision control method for vehicle, it is characterized in that, said method comprising the steps of:
S1) measure the vehicle in travelling and the distance between the obstacle of this vehicle periphery, the distance of institute's measuring car and obstacle and preset being used for are judged whether that the warning distance that should give a warning to the chaufeur of described vehicle compares; Start to vehicle periphery obstacle launch hypracoustic start timing simultaneously, and stop timing when receiving the echoed signal through blocking surfaces reflection, first calculate the time starting timing and stop time difference of time of timing, then calculate the distance between vehicle in traveling and the obstacle of this vehicle periphery by this time difference in conjunction with the aerial propagation speed of super sonic;
S2) warning distance as described in the distance as vehicle as described in determining and obstacle is equal to or less than, then the chaufeur to described vehicle gives a warning, and launches infrared ray to the obstacle near described vehicle simultaneously;
S3) gather the infrared ray through blocking surfaces reflection, obtain the view data of obstacle;
S4) to the view data of the chaufeur display obstacle of described vehicle, and send warning signal.
2. the anti-collision control method for vehicle according to claim 1, is characterized in that, also comprise the steps:
S0) before described step S1, described warning distance is prestored, and for judging whether the braking distance that brake immediately.
3. the anti-collision control method for vehicle according to claim 2, it is characterized in that, described step S2 also comprises: as determined the distance of measuring car and preceding object thing be no more than as described in warning distance, then further the distance of institute's measuring car and preceding object thing and described braking distance are compared; Braking distance as described in distance as vehicle as described in determining and preceding object thing is equal to or less than, then carry out brake operating to described vehicle, make the speed of a motor vehicle of described vehicle reduce to 0.
4. the anticollision control system for vehicle, it is characterized in that, described system comprises ultrasonic distance measuring module (1), the IR laser module (2) be connected with the mouth of described ultrasonic distance measuring module (1), the photoelectric conversion module (3) be connected with the mouth of described IR laser module (2), the anticollision control module (4) be connected with the mouth of described photoelectric conversion module (3) and described ultrasonic distance measuring module (1), and the read-out (5) to be connected with the mouth of described anticollision control module (4), described ultrasonic distance measuring module (1) is for the distance between measuring vehicle and the obstacle of vehicle's surroundings, by find range from its storage be used for judge whether that the warning distance that should give a warning to the chaufeur of described vehicle compares, and export control signal according to comparative result to described IR laser module (2) and described anticollision control module (4), described IR laser module (2) is under the control of described ultrasonic distance measuring module (1), infrared ray is launched to the obstacle near vehicle, described photoelectric conversion module (3) is for gathering the optical signal through blocking surfaces reflection, and described optical signal is converted to electric signal, described anticollision control module (4) for the treatment of this electric signal with the view data of dyspoiesis thing, and for receiving the alarm command of described ultrasonic distance measuring module (1), and send alerting signal, described read-out (5) is for showing the view data of described obstacle, described ultrasonic distance measuring module (1) comprises launches hypracoustic ultrasonic transmitting element (6) for the obstacle to vehicle periphery, for receiving the ultrasonic wave receive unit of the echoed signal reflected by blocking surfaces, for starting timing when described ultrasonic transmitting element (6) launches super sonic, and the timing unit (9) of timing is stopped when described ultrasonic wave receive unit (7) receives described echoed signal, for storing first memory cell (10) of described warning distance, with described ultrasonic transmitting element (6), described ultrasonic wave receive unit (7) is connected with described timing unit (9), for calculating the distance between vehicle and the obstacle of vehicle's surroundings according to the timing time difference of described timing unit (9), by find range from described warning distance and compare, and export the MCU (8) of control signal to described IR laser module (2) and described anticollision control module (4) according to comparative result.
5. the anticollision control system for vehicle according to claim 4, it is characterized in that, described anticollision control module (4) comprises and being connected with the mouth of described photoelectric conversion module (3), for carrying out the amplifying circuit (12) amplifying process to described electric signal, for carrying out the filter circuit (13) of filtering process to described electric signal, for described electric signal being converted to the analog to digital conversion circuit (14) of digital signal, calculate for carrying out imaging to described digital signal with the view data of dyspoiesis thing, and for receiving the alarm command of described ultrasonic distance measuring module (1), run the CPU (15) of alert program, for storing second memory cell (16) of the view data of obstacle, for the loudspeaker unit (17) sent warning signal, and for carrying out the speed of a motor vehicle control unit (18) of brake operating to described vehicle.
6. the anticollision control system for vehicle according to claim 5, it is characterized in that, first memory cell (10) of described ultrasonic distance measuring module (1) also stores for judging whether the braking distance that brake immediately, described braking distance is less than described warning distance, described ultrasonic distance measuring module (1) is when also for determining, the distance of measuring car and preceding object thing is less than described warning distance, further the distance of institute's measuring car and preceding object thing and described braking distance are compared, and when determining, measuring car is equal to or less than described braking distance with the distance of preceding object thing, control described speed of a motor vehicle control unit (18) by described CPU (15) and brake operating is carried out to described vehicle.
7. the anticollision control system for vehicle according to claim 6, it is characterized in that, described CPU (15) also for controlling the emissive power of described IR laser module (2), with the ultrared Illumination intensity regulating described IR laser module (2) to launch.
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