CN2128220Y - Photoelectric infrared collision avoidance system for automobile - Google Patents

Abstract

The utility model relates to a photoelectric anti-collision device used for enhancing the driving safety performance of an automobile, which adopts infrared as a checking light source. An infrared light emitting lamp and an infrared light receiving lamp communicated with a photoelectric control execution circuit are respectively installed on both sides of the front end of an automobile body, and the utility model has the advantages of high resolving capability, wide detection range, far distance, etc. In addition, the utility model also designs a connecting rod adjusting mechanism, and a rotary mechanism for a lamp body synchronous with the automobile body; the connecting rod adjusting mechanism can adjust the change of the included angle between two lamp bodies following the change of driving speed; thus the problem of simultaneous scanning frequency of brake and the automobile and the problem of a detecting light beam always tracks road surface when the automobile body turns are solved.

Description

Photoelectric infrared collision avoidance system for automobile

The utility model belongs to the automobile automation field, particularly a kind of photo-electric anticollision device that can be used for improving the running safety performance.

In the running way, since chaufeur carelessness etc. former thereby fail in time to some driving safety hazard (as the road barrier thing, head-on send a car and situations such as sudden deceleration of front vehicles or parking) handle it, may cause serious traffic accident to take place.In order to guarantee traffic safety, eliminate accident potential, for a long time, people have made very big effort from multiple field of research to this.In all kinds of solution of prior art, employing electromagnetic type Photoelectric Detection control class anticollision device is undoubtedly comparatively advanced.This class device mainly is to utilize projector and the receptor monitoring road surface situation that is installed on body structure, and with sending sound, light warning after the processing of roadblock signal warp let-off control circuit immediately, judges and processing to remind chaufeur to make.But the problem of its existence is: this class device uses the photoelectric switch of general light source, cisco unity malfunction under the occasion that has veiling glare to disturb, and its workmanship descends under strong illumination simultaneously; In addition, being installed in the projector of body structure and the angle between the receptor generally all fixes, that is to say, its warning surveillance distance to the place ahead is to change according to the actual conditions that run in the driving way (as the relative velocity situation of car body and the place ahead obstacle or the relative velocity situation between the meeting both sides vehicle), and this has also brought inconvenience to the timely reaction treatment of vehicle.All all difficulties have all limited the enforcement of prior-art devices to a great extent.

The utility model is a kind of existing automobile Photoelectric Detection control class anticollision device to be made improved device, and its purpose is to overcome at present existing weak point in this type of device, improves its workmanship and safe application performance thereof.

In order to realize the foregoing invention purpose, technical solution of the present utility model is to adopt the detection light source of infrared light sources as automobile Photoelectric Detection control formula anticollision device, promptly is separately installed with an infrared light emission lamp and an infrared light receiving light that is communicated with the photoelectric control executive circuit in the both sides of auto body front end.In automobile is travelling the way during convergence obstacle, the infrared signal that penetrates from the emission lamp is received by receiving light by the diffuser reflection of body surface, and then by after the control circuit processing, can send sound and light alarm successively or cut off the working power of automobile, close throttle, drag is realized stopping at last.Resolution capability height, detection range are wide because infrared light has, distance, speed of response are fast, be not afraid of high light disturbs and is not afraid of characteristics such as influence of magnetic field, thereby than other kind same device that adopts ordinary light source, its more reliable performance, use more conveniently, can greatly increase the traffic safety sense of chaufeur.In addition, in order to solve brake and the synchronous problem of the speed of a motor vehicle, the utility model has also adopted the regulating mechanism that the lamp body angle can change with the speed of a motor vehicle has been housed on emission lamp and receiving light lamp bracket, make the angle of reflection that detects light beam to adjust automatically, so also just make vehicle obtain more suitable safety shut-down distance with the variation of the speed of a motor vehicle.

Below with reference to accompanying drawing automotive infrared photoelectricity anticollision device described in the utility model is further described.

Fig. 1 is the structural representation of test section in the utility model.

Fig. 2 be in the utility model the test section with the scheme drawing of the synchronous steering structure of vehicle body.

Fig. 3 is the sectional structure chart along A-A line among Fig. 1.

Fig. 4 is the sectional structure chart along B-B line among Fig. 1.

Fig. 5 is the functional-block diagram of control part in the utility model.

Fig. 6 is a concrete scheme circuit of control part in the utility model.

Referring to accompanying drawing, infrared light emission lamp 1 and receiving light 2 are installed in the body structure both sides respectively, form certain included angle each other.Receiving light 2 is subjected to less than illumination at ordinary times, only just can receive the infrared light that reflects at vehicle convergence object during to certain distance.During concrete enforcement, can a convergent lens respectively be installed in emission lamp 1 and receiving light 2 front portions, make the coverage zone that shape is intersected in an angle between their the ejaculation light, when in this zone, running into the orienting reflex object, reflected light is received by receiving light 2, thereby obtains reflected signal.Aforesaid lamp body angle is such with the regulating mechanism that the speed of a motor vehicle changes: will launch lamp 1 and be connected by the pointer arm 3 of an auxiliary crank connecting rod mechanism with automobile magnetoelectric induction device 13 with receiving light 2.Described piston crank mechanism is hinged and is constituted by emission lamp 1 lamp bracket, receiving light 2 lamp brackets, left and right pipe link 4,5, adjust bar 6, and wherein the middle part of adjust bar 6 is provided with a fulcrum, and tail end is hinged on the pointer arm 3 of magnetoelectric induction device 13.During running car, the output shaft of its change-speed box or part-time case is by flexible axle 12 rotations, and the magnetic line of force in the cutting magnetoelectric induction device 13 drives 3 work of magnetoelectric induction device 13 pointer arms, has also driven the piston crank mechanism action simultaneously.When automobile speed is higher, move on the tail end of pointer arm 3 drive adjusts bar 6, driven left and right pipe link 4,5 simultaneously and moved down, the angle between emission lamp 1 lamp bracket and receiving light 2 lamp brackets is diminished, this moment, the detection range of automobile was just distant; Otherwise when the speed of a motor vehicle was low, it is big that angle becomes, and it is just closer to receive the distance of surveying.So just realized changing braking distance, making the vehicle scanning frequency purpose synchronous with brake according to the situation of the speed of a motor vehicle.Meet when head-on sending a car, owing in the vehicle same device is being housed relatively, two cars brake simultaneously, can play the effect of double insurance.Label 21 is a convergent lens among Fig. 1,22 expression obstacles.

For making automobile detecting light beam when the turning driving follow the tracks of the road surface all the time, prevent that the on turn vehicle traffic accident from taking place, the utility model has also been made the structure design that the test section that makes anticollision device turns to synchronously with car body, and its concrete form is as shown in Figure 2.Have a pair and can turn to the rotating disk 8 of synchronous rotation with car body in this structure, will launch lamp 1 and receiving light 2 and be contained on the rotating disk 8 by connecting pin 7, rotating disk 8 is installed on the intermediate rod 11 of automotive steering structure by a pipe link 9 and an oscillating bearing 10 simultaneously.When the chaufeur steering wheel rotation, intermediate rod 11 is left or right to extend or stretches weak point, so just drive rotating disk 8 left-right rotation with intermediate rod 11 bonded assembly pipe links 9, the Device Testing part is turned to synchronously with car body.

The photoelectric control executive circuit that is communicated with receiving light 2 in the utility model as shown in Figure 5 and Figure 6.It is received by oscillating circuit 14, waveform transformation circuit 15,16, power amplification circuit 17, modulated light signal and detecting circuit 18, gating circuit 19 and demodulation trigger circuit 20 are formed.Oscillating circuit 14 is by this schmitt trigger H ₁, capacitor C ₁And resistance R ₁The multi-vibrator that constitutes, waveform transformation circuit 15 is by two this schmitt trigger H that are used for wave shaping ₂, H ₃Constitute, its effect is the square-wave signal P that multi-vibrator is produced ₁Become narrow ripple signal P ₂P ₂Signal is input to the emitter follower BG in the power amplification circuit 17 ₁In, again by BG ₁Emitter output, deenergization darlington BG ₂And BG ₃Carry out power gain.In modulated light signal reception and detecting circuit 18, photo-transistor BG ₄Be used for the receiving infrared-ray pulse-modulated signal, replace the load of resistance, because L presents low resistance to stable direct current, and modulating pulse is presented high resistance, so again through capacitor C as receiving light 2 with inductance L ₄Coupling every removing direct current, just can be selected required modulated pulse signal, transistor BG ₅And BG ₆Two-stage as AC signal is amplified.Gating circuit 19 mainly comprises NAND gate M ₁, its narrow ripple signal P after with shaping ₂With reception detecting signal P ₄Compared its output signal P ₅This schmitt trigger of warp let-off H again ₅In transfer wide processing, output signal P thereafter ₆Be transported to again in the demodulation trigger circuit 20, this circuit is the double D trigger of CO43 and the NAND gate M of three parallel connections by model ₂, M ₃, M ₄Form, wherein CO43 plays the demodulation effect, demodulation signal later feeds the electrical actuators (for example drag mechanism, sound and light alarm mechanism, mechanical rotating mechanism etc.) of automobile at last again through NAND gate mouth output in parallel, carries out auto alarm or automatic guidance.Three NAND gate M in the demodulation trigger circuit 20 ₂, M ₃, M ₄The in parallel use can increase output supplying electric current and output absorption current, improves the power-handling capability of entire circuit.In the embodiment shown in fig. 6, H ₁～H ₅Adopting a model is six these schmitt triggers of CH40106, M ₁～M ₄Adopting model is the 42 output NAND gate circuit of CO36.

Compared with prior art, the advantages such as that photoelectric infrared collision avoidance system for automobile described in the utility model has is rational in infrastructure, perfect in shape and function, easy to use and reliable working performance, for improving the automotive safety train operation performance, alleviating driver's spirit and body burden thereof has great benefit. This device is except can automobile is installed and used, also being installed on train, steamer and other motor vehicles simultaneously.

Claims (5)

1, a kind of photo-electric anticollision device that is used to improve the running safety performance is characterized in that in the body structure both sides infrared light being installed respectively launches lamp 1 and an infrared light receiving light 2 that is communicated with the photoelectric control executive circuit.

2, photo-electric anticollision device as claimed in claim 1 is characterized in that launching lamp 1 and is connected by the pointer 3 of an auxiliary crank connecting rod mechanism with automobile magnetoelectric induction device with receiving light 2.

3, photo-electric anticollision device as claimed in claim 2 is characterized in that piston crank mechanism is hinged and is constituted by emission lamp 1 lamp bracket, receiving light 2 lamp brackets, left and right pipe link 4,5, adjust bar 6.

4, as claim 1,2 described photo-electric anticollision devices, it is characterized in that emission lamp 1 and receiving light 2 are contained on the secondary rotating disk 8 by connecting pin 7, this rotating disk 8 is installed on the intermediate rod 11 of automotive steering structure by a pipe link 9 and an oscillating bearing 10 simultaneously.

5,, it is characterized in that the photoelectric control executive circuit that is communicated with infrared light receiving light 2 is received by oscillating circuit 14, waveform transformation circuit 15,16, power amplification circuit 17, modulated light signal and detecting circuit 18, gating circuit 19 and demodulation trigger circuit 20 are formed as claim 1,2,4 described photo-electric anticollision devices.

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