CN2068474U - Vehicle lamp fault alarm - Google Patents

Abstract

The utility model relates to a vehicle lamp fault alarm, which is composed of a sample circuit, a switch circuit and an alarm circuit. The vehicle lamp fault alarm is suitable for the alarm for the signal lamp faults of various automotive vehicles. The vehicle lamp fault alarm has the function of the normal alarm, and moreover, the vehicle lamp fault alarm has the advantages of simple circuit, low cost, convenient operation, reliability.

Description

Vehicle lamp fault alarm

A kind of power actuated vehicle signal lamp failure warning device.

In the prior art, signal lamps such as the stoplight stop lamp of power actuated vehicle such as automobile, motor bike, steering indicating light damage or the line open circuit, and cause signal lamp not work, though corresponding display lamp is arranged in the operator's compartment, but display lamp only shows the mode of operation of signal lamp, and the quality of displaing lamp does not see the signal lamp that is contained in the car front and back owing to chaufeur, as not finding in time that signal lamp does not work, and just has the danger that causes the accident.

The purpose of this utility model is in order to solve the problem of above existence, the warning device of the normal alarm condition of a kind of power actuated vehicle signal lamp to be provided.

The utility model is realized by sampling circuit, switch circuit, warning circuit.Sampling circuit is by the K switch that connects positive source, the other end of K connects the positive pole of diode D1 respectively, the emitter of aerotron BG1, the negative pole of D1 respectively with the negative pole of two utmost point D2, the end of signal lamp RL, and the base stage of passing through resistance R 2 and BG1 is connected, the other end of RL connects power cathode, the positive pole of D2 respectively with the other end of the R1 that is connected positive source, the collecting electrode of aerotron BG2, and the positive pole that connects the diode D3 of switch circuit joins, the collecting electrode of BG1 connects an end of resistance R 3, and the other end of R3 and the base stage of BG2 are joined, and emitter and the power cathode of BG2 connect to form.Switch circuit is made up of aerotron BG3, and the base stage of BG3 is connected with the negative pole of D3, and the negative pole of emitter and power supply is connected, and collecting electrode connects warning circuit.Warning circuit is made up of R4, D4 and the buzzer phone warning circuit of sound horn (or have), indicator lamp D4(is a light-emitting diode) the positive pole of anodal power connection, negative pole connects the end of R4, the collecting electrode of another termination BG3 of R4, and buzzer phone inserts between positive source and the BG3 collecting electrode.

When signal lamp does not need work (being that K does not close), do not damage as RL, power supply forms the loop through R1, D2, RL, because the R1 resistance is big (a few K Ω-hundreds of K Ω), RL does not work, at this moment after dividing potential drop, the positive summit potential of D2 is an active potential, not conducting of BG3, and warning circuit is not worked; When damaging as RL, the positive summit potential of D2 is a high potential, the BG3 conducting, and warning circuit work is promptly reported to the police.Like this no matter when RL damages and can both in time report to the police.

When signal lamp needs work (being that K closes), when not damaging as RL, the pressure drop about the last generation of D1 1V, BG1, BG2 conducting, the BG2 current collection is active potential very, and the BG3 base stage is by clamper and not conducting, and warning circuit is not worked; When damaging as RL, since the buffer action of D2, the last no pressure drop of D1, BG1, not conducting of BG2, the positive limit of D2 is a high potential, the BG3 conducting, warning circuit is reported to the police.

Below in conjunction with accompanying drawing the utility model car light fault alarm is described in detail.

Fig. 1 is the block scheme of the utility model car light fault alarm.

Fig. 2 is the schematic diagram of the utility model car light fault alarm.

Fig. 3 is the schematic diagram of the utility model car light fault alarm (positive ground type).

Fig. 4 is No. two annunciator schematic diagrams that the utility model car light fault alarm is formed.

Fig. 5 is the self-locking type fault alarm schematic diagram that the utility model car light fault alarm is formed.

1 is sampling circuit, the 2nd among Fig. 1, switch circuit, the 3rd, warning circuit.

An end of K switch is connected with positive source among Fig. 2, the other end connects diode D1 positive pole respectively, the emitter of aerotron BG1, the negative pole of D1 connects the negative pole of diode D2 respectively, the end of signal lamp RL, be connected with the other end of BG1 base stage bonded assembly R2, R2 plays the biasing resistor effect of current limliting or BG1, the other end of RL connects the negative pole of power supply, the positive pole of D2 respectively with the other end that is connected positive source R1, the collecting electrode of aerotron BG2, and the positive pole that connects the diode D3 of switch circuit is connected, the collecting electrode of BG2 also can connect the base stage of BG3, the collecting electrode of BG1 connects resistance R 3 successively, the base stage of BG2, the emitter of BG2 is connected with power cathode, forms sampling circuit.R3 is biasing resistor (or current-limiting resistance).

Switch circuit is made up of BG3, and the base stage of BG3 connects the negative pole of D3, and emitter is connected with power cathode, and collecting electrode connects R4 and the buzzer phone warning circuit of sound horn (or have) respectively.

Warning circuit is made up of R4, D4 and the buzzer phone warning circuit of sound horn (or have), indicator lamp D4(is a light-emitting diode) anodal power connection positive pole, negative pole connects the other end of R4, R4 is a current-limiting resistance, R4 and D4 can change over, effect is constant, and buzzer phone inserts between the collecting electrode of positive source and BG3.

When signal lamp RL does not work (when K does not close), RL is normal as signal lamp, because of RL is low resistance, power supply forms the loop through R1, D2, RL, because R1 is a few K Ω-hundreds of K Ω, RL is not luminous, the positive limit of D2 is an active potential, can not make BG3 different logical, and warning circuit is not reported to the police.D3 makes to improve BG3 gate voltage and uses.When RL damage or line open circuit, power supply makes BG3 different logical through R1 and D3, and report to the police indication and sound are sent in warning circuit work.

When signal lamp RL needs work (when K closes), RL is normal as signal lamp, and power supply forms the loop through K switch, D1 and RL, and RL is normally luminous, electric current through D1 is bigger, at this moment about the about 1V of the loss in voltage on the D1, make BG1, the BG2 conducting, the about 0.3V of BG2 collector potential, the positive summit potential of D2 and D3 is by BG2 collector potential clamper, not conducting of BG3, and warning circuit is not reported to the police.When RL damaged, because the buffer action of D2, the D1 no current passed through, no pressure drop, and BG1 and BG2 end, and can not make the BG3 conducting to the BG3 clamper, warning circuit work, D4 is luminous, the buzzer phone warning circuit of sound horn (or the have) warning of sounding.

The utility model car light fault alarm no matter which kind of state vehicle is in, needs only signal lamp and damages like this, and annunciator just can be reported to the police immediately.

The described car light fault alarm of Fig. 2 is applicable to minus earth type automobile.

The described car light fault alarm of Fig. 3 is applicable to positive ground type automobile, its structure is identical with Fig. 2 with principle, difference is: BG1 changes NPN type aerotron into by the positive-negative-positive aerotron, BG2 and BG3 change the positive-negative-positive aerotron into by NPN type aerotron, the anti-utmost point of D1, D2, D3 and D4 both positive and negative polarity connection mode, its effect is described the same with Fig. 2.

Two road warning circuits that Fig. 4 is made up of the car light fault alarm are applicable to two signal lamps of control.As two stoplight stop lamps or two steering indicating lights etc., it is by two sampling circuits, and switch circuit is formed, report to the police by a warning circuit, its light-emitting diode can show each road signal lamp failure respectively, connects a diode between the sampling of every road, switch circuit and the warning circuit, plays buffer action.

The self-locking type failure alarm circuit that Fig. 5 is made up of the car light fault alarm connects a relay J in warning circuit, when reporting to the police, and the relay adhesive, priming supply is cut off, and automobile can't start, and pending fault can start after getting rid of.

Above embodiment scheme should not constitute restriction of the present utility model, and other change still is passable, as realizing multichannel control, controls stoplight stop lamp respectively, signal lamps such as left and right sides steering indicating light.

The utility model alarm for headlight breakdown of car has the function of normal warning, and can also can report to the police to original signal lamp connection line open circuit, and simple in structure, low price is controlled the advantages such as convenient, effective, is applicable to the warning of various motor vehicles signal lamps.

Claims (2)

1, a kind of car light fault alarm, by between power supply, connect K switch, signal lamp RL forms, it is characterized in that, the junction that also is connected diode D1, D1 and K in K and RL is connected the emitter of aerotron BG1, the other end of D1 connects the base stage of resistance R 2, BG1 successively, and an end that connects the D2 between the BG3 base stage, the other end of the diode D3 that the other end of D2 is connected with the base stage of BG3; The point of connection of D2, D3 also connects collecting electrode, the resistance R 1 of BG2 respectively, the other end of R1 connects power supply, BG2, BG3 emitter connect the other end of power supply, the base stage of BG2 connects the collecting electrode of resistance R 3, BG1 successively, and the collecting electrode of BG3 connects the warning circuit of being made up of light-emitting diode, buzzer phone in the prior art.

2, car light fault alarm according to claim 1 is characterized in that the collecting electrode of BG2 also can be connected with the BG3 base stage.