CN87200687U - Photoelectric automatic control device for increasing traffic safety - Google Patents

Abstract

The device can emit acoustic and optical alarm or automatically control for some unsafe factors, such as the sudden speed reduction or the parking of a motor vehicle running ahead, light-reflecting obstacles at night, glaring light during vehicle meeting, etc. The utility model has significant practicability for improving driving safety. The utility model is characterized in that the utility model changes the optical angle or the optical brightness of a distance-light lamp during vehicle meeting to prevent glare and have sufficient illumination, and the optical angle or the optical brightness can automatically recover after vehicle meeting. Multiple control modes are adopted to adapt to different requirements of vehicle headlamps. Thus, the utility model has the advantages of economy, convenience, simple circuit and wide practicability, and a relay is replaced with a solid switch to enhance the service life and the reliability.

Description

Photoelectric automatic control device for increasing traffic safety

The utility model belongs to the photoelectricity automatic control technology, is a kind of practical photoelectricity automatic control device that improves self-propelled vehicle driving safety.This device is to causing some safety hazard in the self-propelled vehicle driving, for example drive a vehicle sudden deceleration or parking of the place ahead; The upper beams that dazzle the eyes when reflective obstacle and meeting night etc. can send sound to navigating mate, light is reported to the police or control automatically.

In the past to the place ahead drive a vehicle sudden deceleration or parking, provide automatically or strengthen the stoplight signal, the driver of back vehicle observes with eyes, and this red light is handled.But when this driver does not realize this red signal because of certain reason, may cause having an accident.This device can send sound, light warning through processing of circuit immediately to this stoplight signal, handles to remind the driver.If the signal that this device sends is sent into automatic braking device, can further reach self-stopping purpose.In addition, if before existing in night travel during the reflective obstacle of line direction, within certain distance, this device also has above-mentioned functions.

This device Another application is the light automatic guidance when being applicable to nighttime meeting.Prior art be when meeting manually or automatically shut down distance head lamp, dazzling the eyes when having avoided meeting like this.But no matter be to utilize the reversing light that installs additional in the prior art, still utilize the car side light, all be difficult to satisfy the actv. vehicling lighting.At this problem, the design has improved control method, is characterized in passing through when meeting the angle of mechanical rotation changing of design car head light; Perhaps utilize novel two filament headlights or separate the instant and near light lamp, change lighting angle by the electronics power element; Perhaps change the brightness of car head light by the electronics power element.So not only can solve meeting and dazzle the eyes problem, and the problem of illumination deficiency when having solved meeting.Because the design has corresponding different control method at the present actual different car lights that use, thereby the utlity model has the popularity of practical application.In circuit, adopt the voltage stabilizing link, avoid the influence of cell pressure fluctuation, also utilize high-power electronic switch to replace relay, improved service life and reliability.

Main points of the present utility model are: to the optical signal that aforesaid safety hazard sent, detect with photosensor (for example photodiode, photo-transistor, photoemissive element etc.), amplify and processing through electronic circuit, handle machine by high-power electronic switch, electricity power element (for example electromagnet, combined aural and visual alarm, mechanical rotating mechanism, drag mechanism etc.), carry out auto alarm or automatic guidance, and can recover normal condition automatically, reach the purpose of safe driving to assist navigating mate.

According to above-mentioned design philosophy, the concrete scheme of this device is: to front truck slow down or parking red light, night reflective obstacle optical signal, detect by photosensor, through electronic circuit amplify, compare, regularly, follow, start electronic switching circuit, make sound, light crossing-signal send warning.To the control of nighttime meeting light, its scheme has following three kinds: 1. electromagnet drives mechanical rotating mechanism, to change the position angle of car head light; 2. turn-off two filament car lights in the country beam of filament far away or separation, low beam silk or non-ly dazzle the eyes passing light in the utilization changes lighting angle; 3. in the country beam circuit, insert the resistance of suitable resistance automatically, weaken the brightness of country beam.So all can reach the illumination of existing suitable meeting driving, dazzle-free again.Automatically restore by electronic timing circuit behind the meeting.

Fig. 1 and Fig. 2 are concrete schematic circuit diagram.

Fig. 1 reports to the police to drive the circuit working schematic diagram of mechanical rotating mechanism with electromagnet.Certainly warning circuit can constitute a device separately, at this moment can be without T ₇, T ₈, and T ₆Use 3DG12B instead.Also can be at T ₆Add the one-level multi-vibrator before the level, perhaps T ₄, T ₅Change pressure-controlled multi-vibrator into, making the alerting signal of sending is the paroxysm formula.Here easy for circuit, merged with lighting control circuit.But also adjunction warning circuit of Fig. 2 in like manner.

Circuit shown in Figure 1 mainly is made of five parts, wherein T ₁, T ₂, T ₃Be photoelectricity amplification switch circuit, T ₄, T ₅Constitute the common emitter monostable circuit, T ₆Be emitter follower, T ₇, T ₈Constitute the Darlington high-power switching circuit, R ₁₂And D _WConstitute the voltage stabilizing link.T _1～3Available 1～2 superelevation β pipe replaces.T _4～8Also other model aerotron of available approximate performance replaces.

The warning circuit principle of work is as follows.G ₃Be the photo-transistor of cover with red transparent plastic film, also available certainly other to the light activated photoelectric device of redness.Work as K ₃, K _2-1, K _2-2Closure, K ₁During disconnection, warning circuit is in running order.When redfree illumination, G ₃Be high-impedance state, T _1～3End T ₄End T ₅Conducting, T at this moment ₆, T ₇, T ₈Be in off condition, annunciator coil no current passes through.But when enough red light were shone, circuit state was opposite, and the annunciator coil is similar to 12V voltage, sends warning.

Daytime is when using, for avoiding daylight impression, and can be at G ₃Before add a short tube.Bias light influence adjustable potentiometer R ₂Compensation, but because of T _1～3Be on off state during work, generally needn't adjust repeatedly.R ₅Adjust monostable threshold voltage, can cooperate to adjust and start to control sensitivity.Taillight is reequiped reflective snoot, can strengthen to start to control distance, reports to the police more reliably.

During night running, closed K of while _1-1, when then running into reflective obstacle, its reflected light can make sound, light crossing-signal report to the police.

Light automatically controlled principle of work is similar to above-mentioned principle during meeting.At K ₁When closed, unglazed photograph is T then ₈End, electromagnet L no current passes through; During meeting, under the effect of the other side's light, G ₁, G ₂Conducting, circuit upset, T ₈Conducting, electromagnetic actuation makes mechanical rotating mechanism change the front car light angle, reaches existing 30～40 meters illumination, and is dazzle-free again.Through T ₄, T ₅Time-delay, behind certain hour, circuit overturns automatically, T ₈Enter off condition again, the electromagnet dead electricity, restore the car light position.The time of time-delay is by R ₈Adjust, within 1～5 second scope.When electromagnet has soft iron processing, and when using harder steel, may produce remanent magnetism, make Control Failure.C ₂, C ₃, R ₁₅Constitute the convergent oscillations loop with L, in order to eliminate remanent magnetism.R ₂The adjustable distance of starting to control is generally chosen about 100 meters and is advisable.

Because the car head light position difference of various vehicles is bigger, available two or two above photo-transistors place different angles, the in parallel use.Sometimes because of the light intensity difference of various vehicles, may not cause action simultaneously, the at this moment available method that shortens delay time, with when the second time illumination, concurrently-acting.

The formation of circuit shown in Figure 2 is similar to Fig. 1, and just the illumination effect is opposite, T during promptly unglazed the photograph ₈Conducting, circuit upset when illumination is arranged, T ₈End.R among the figure _L1, R _L2Be respectively the middle headlight high beam filament and the middle dip filament of two filament car lights, perhaps be respectively the country beam and the non-passing light of dazzling the eyes (irradiation has a down dip) of separation.During meeting, when distance head lamp automatically shut down, middle dip filament and the non-irradiation of dazzling the eyes passing light to have a down dip because of two filament car lights all had certain range and dazzle-free like this.

If still use common car head light, then can be as the R of Fig. 2 dotted line connection ₁₆, connect the resistance of a suitable resistance, T when making meeting ₈End car head light R _L1Insert R ₁₆, thereby brightness deterioration.Time-delay back T ₈Conducting, short circuit R ₁₆, the car head light recovers normal illumination automatically.Because of present car head light power difference, so R ₁₆Need the light fixture of border use factually to adjust.

Claims (5)

1, a kind of photoelectricity automatic control device that improves self-propelled vehicle driving safety is characterized in that:

-to slow down or the parking red light and night reflective obstacle send the device of sound, light auto alarm,

The light automatic control device of-change car head light lighting angle that constitutes by electromagnet, mechanical rotating mechanism and control circuit,

The light automatic control device of-change lighting angle that constitutes by two filament headlights and control circuit,

The light automatic control device of-change brightness that constitutes by car head light and control circuit,

-warning device and light automatic control device are same control circuit.

2, photoelectricity automatic control device as claimed in claim 1, the light automatic control device that it is characterized in that wherein changing brightness comprises the resistance of the control brightness that is connected in series with the car head light.

3, photoelectricity automatic control device as claimed in claim 1, it is characterized in that wherein control circuit by Photoelectric Detection, amplification, comparison, regularly, follow, electronic switch and mu balanced circuit form.

4, photoelectricity automatic control device as claimed in claim 3 is characterized in that wherein switch comprises the high power solid state electronic switch.

5, photoelectricity automatic control device as claimed in claim 3 is characterized in that wherein being to comprise a degausser in the control circuit of load with the electromagnet.

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