CN2224762Y - Damage alarm of vehicle light - Google Patents

Abstract

The utility model relates to a fault alarm of a vehicle light, which comprises a signal generating circuit and an alarm circuit, wherein, the signal generating circuit is an oscillating circuit; a group of oscillating signals generated by the oscillating circuit is input into the input terminal of the alarm circuit; the vehicle light of a motor vehicle is connected between the signal generating circuit and the alarm circuit; the other end of the vehicle light is connected with ground. The utility model is suitable for various vehicle models; as long as the motor vehicle is ignited, the alarm enters into the operational status of detection; no matter what status the motor vehicle or the vehicle lamp is in, once the vehicle lamp has a fault, the utility model can timely give an alarm. The utility model has the advantages of small size, simple structure, reliable performance, etc.

Description

The car light fault alarm

The utility model is a kind of vehicular spare parts, particularly a kind of automobile lamp fault alarm.

Whether the car light of traveling automobile exists fault on the road surface at present, and navigating mate is not easy to discover very much, so the hidden danger of accident exists all the time.The patent No. is that 91224623 utility model patent discloses a kind of car light fault alarm, it is provided with one and is connected on a heating wire in the loop with headlight filament, the length variations of utilizing heating wire to be heated to be produced drives the moving contact action of change-over swith, warning circuit is opened circuit, in case and the car light et out of order, generation is opened circuit, heating wire promptly returns to the original length, connect change-over swith, make warning circuit send alerting signal.The shortcoming of this Automobile Lamp Alarm Device is in a period of time that car light is started working, and no matter whether car light has fault, and annunciator all will send alerting signal, is subjected to thermal elongation up to heating wire, and change-over swith is opened circuit, and just stops to send alerting signal.Therefore this annunciator will produce noise one time when every bright car light.And this annunciator is to utilize the mechanical type change-over swith to control warning circuit, so each street lamp needs a switch to control, certainly will cause complex structure in actual applications.Heating wire is often opened normal off in addition, can shorten its service life, influences the reliability that annunciator uses.

The purpose of this utility model provides a kind of later-model automobile lamp accident warning device, and it can overcome existing shortcoming in the prior art, realizes dependable performance, simple in structure, and have only when the car light et out of order, alerting signal just sent, in addition, it can not produce any noise.

The purpose of this utility model is achieved in that it comprises signal generating circuit and warning circuit, it is characterized in that signal generating circuit is an oscillating circuit, one group of oscillator signal that it produces is defeated by the input end of warning circuit, between signal generating circuit and warning circuit, be connected with the car light of automobile, the other end ground connection of car light.

The power supply of warning circuit of the present utility model adopts 12V or 24V direct supply, preferably directly use automotive battery, and the ignition lock of the master cock of annunciator and automobile is shared.

The utility model is applicable to various vehicles, as long as automobile one igniting, annunciator promptly enters the testing state, and no matter automobile is to stop or driving, and no matter car light leaves or closes, in case there is fault in car light, the utility model can in time be reported to the police.And compare with above-mentioned prior art, it is small and exquisite, simple in structure to the utlity model has volume, advantages such as dependable performance.

The utility model is described in further detail below in conjunction with most preferred embodiment of the present utility model and accompanying drawing thereof.

Fig. 1 is the electrical schematic of the optimum structure of six street lamp light crossing-signals.

The utility model adopts integrated operational amplifier IC1, the IC2 (LM324) of two four-ways, also can if adopt separation original paper triode to form amplifying circuit.Integrated amplification piece has eight passages, one of them channel modulation AC signal, a channels drive buzzer phone, other six channels drive light-emitting diodes.

The 12V direct supply of employing automotive battery and automobile ignition switch are as the master cock of annunciator.When power turn-on, because R1-R5 and C2 and IC1 first passage are formed oscillating circuit, produce the AC signal of 10-100 kilohertz, this AC signal is by the 1 pin output of IC1, deliver to R8, R35 and R13, R18, R23, R28 respectively by capacitor C 3, as six bus lamp detection signals.ZD1-ZD6 is an automotive lamp among the figure.If this moment six bus lamp troubles free, AC signal will flow into battery negative post by car light.This moment, the AC signal by capacitor C 4-C9 was a low level, so is low level by resistance R 6, R11, R16, R21, R26 and R31 to the incoming signal of IC1 and IC2 respective channel in-phase end, promptly 3,5,12 pin of 5 of IC1,10,12 pin and IC2 are low level.The cooresponding mouth of IC1 and IC2, i.e. 1,7,14 pin of 7 of IC1,8,14 pin and IC2) be high level.Cooresponding with it light-emitting diode D13-D18 does not work.Simultaneously because the positive pole of D7-D12 is taken from the in-phase input end of each passage respectively, so the time diode common port also be low level, 10 pin of IC2 also are low level, so buzzer phone is loud.

If there is a car light to break down, with ZD1 example, this moment, the AC signal of 1 pin output of IC1 was added to 5 pin of IC1 by C3 to R8, C4, R6, and signal is a high level, so 7 pin of IC1 are output as low level, light-emitting diode D13 is bright.Meanwhile, the positive pole of diode D12 obtains high level and conducting, and high level signal is added to 10 pin of IC2, and the 8 pin output low levels of IC2 make buzzer phone send alarm sound.Other lamp alarm principle that breaks down is same as described above.

When buzzer phone sends alerting signal, make driving or maintainer learn that car light has after the fault, disturb for a long time in order to exempt alerting signal, the utility model also is provided with silence switch, promptly the public negative pole at diode D7-D12 is connected to a K switch 2, it can cut off the input of alerting signal in good time, makes buzzer phone stop to report to the police.

The utility model is provided with try cock K1, is connected to the mouth of AC signal.When the K1 closure, the AC signal of 1 pin of IC1 output makes its conducting simultaneously by the positive pole that C3, K1, R39 deliver to D1-D6, high level signal is delivered to each relevant in-phase input end of IC1, IC2, this moment, D13-D18 was simultaneously luminous, and buzzer phone sends sound equipment, illustrates that annunciator is in normal operation.Try cock has been arranged, the unfailing performance of alarm work is improved.

D19 among the figure is the indicator signal of power supply.D20 is reverse polarity protection's diode, connects the safety method of taking on the contrary in order to prevent power supply.

Claims (3)

1, a kind of car light fault alarm, it comprises signal generating circuit and warning circuit, it is characterized in that signal generating circuit is an oscillating circuit, one group of oscillator signal that it produces is defeated by the input end of warning circuit, between signal generating circuit and warning circuit, be connected with the car light of automobile, the other end ground connection of car light.

2,, it is characterized in that it also is connected to silence switch according to the said annunciator of claim 1.

3,, it is characterized in that being connected to try cock at the mouth of oscillator signal according to the said annunciator of claim 1.

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