CN2537602Y - Light monitor for vehicle - Google Patents

Abstract

The utility model discloses a monitor which can remind driver to turn off the lights when no need for light duting vehicle starting or environment light changing, comprising a judgement circuit, a time delay circuit, a switching circuit, a light sensing circuit. The monitor is connected in parallel with lighting equipment, and without adverse effect to the original circuit. The utility model has an advantage of, preventing driver forgetting to turn lights ON or OFF by mistake effectively.

Description

The vehicle lights monitor

Affiliated technical field

The utility model relates to a kind of warning device of monitoring the correct situation of vehicle lights work, especially when ambient light is brighter, points out chaufeur to close light when not needing light with language or sound.

Background technology

At present, known light service condition indicating device is to utilize the indicator lamp on the gauge panel to show.But a lot of chaufeurs are ignored the service condition of light indicator lamp easily, still turn on light when causing driving a vehicle by day and travel, and cause vehicle electric element equipment life and fuel oil consumption and traffic violation phenomenon.

Summary of the invention

In order to overcome the deficiency that existing light service condition indicating device is ignored by chaufeur easily, the utility model provides a kind of monitor, this monitor is with language or auditory tone cues chaufeur, close light when driving a vehicle by day, and vehicle launch or surround lighting change to do not need light after prompting stop automatically after some seconds.

The utility model solves the used scheme of its technical matters: be connected with decision circuitry, time delay circuit, photosensitive circuit, switch circuit on a circuit card, amplifying circuit, buzzer phone.Time delay circuit adopts the RC integrating circuit, directly be connected on the exit of electrical generator excited signal, decision circuitry adopts the base stage of a switch triode sense and emitter to judge whether ignition signal and wigwag occur simultaneously, optical circuit adopts the power of photoconductive cell induced environment light, voltage control optical switch circuit on utilization and the series connected adjustable resistance of photoconductive cell, switch circuit adopts switch triode control, the base stage of switch triode is connected between the resistance and electric capacity of RC circuit, and amplifying circuit adopts the aerotron single-stage to amplify.Photoconductive cell is placed the position that can do required ambient light, and buzzer phone places in the chaufeur audibility range, and main body is installed in enough places, any space.Draw single line respectively by the positive pole of monitored lamp and electrical generator " F " binding post and do control signal, the former connects integrator delay-time circuit and judges emitter with three machine pipes, and the latter connects the base stage of judgement with three machine pipes.When vehicle launch, if the preceding light of not closing when once stopping, then wigwag and electrical generator excited signal occur simultaneously, base stage and the emitter short circuit that be equivalent to judge three machine pipes of usefulness this moment are connected on the high level simultaneously, collecting electrode is connected on the emitter of switch triode, at this moment, the charging of RC circuit, the voltage at resistance two ends is the base loop conducting of switch triode, and collecting electrode causes the base stage of amplifying triode with high level, with the conducting of buzzer phone loop, charging taps at the end, electric current in the RC circuit diminishes, and switch triode ends, and buzzer phone stops pronunciation.If open light again behind the starting vehicle earlier, electric capacity is full of in the RC circuit at this moment, this moment, switch triode did not have base current, therefore if ambient light is darker at this moment, change to when not needing light at ambient light, the voltage breakdown zener diode at the adjustable resistance two ends on the photosensitive circuit, high level is guided to the base stage of photosensitive circuit switch triode, make the conducting of sensitization amplifying circuit, the cutin relay wire loop, relay normally open contact is connected the positive pole of the positive pole of the electric capacity 4 of RC circuit and another electric capacity, make buzzer phone pronounce again and delayed time some seconds after stop automatically.

Thus, application of the present utility model can be avoided the mistake that chaufeur is turned on light and travelled daytime.Circuit component is the universal electric element, and is simple in structure, reliable in function.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further described.

Fig. 1 is schematic circuit diagram of the present utility model.

Fig. 2 and Fig. 3 are the constructional drawings of a specific embodiment of the present utility model.

1. controlled light switch signal leading-in end common cathode diodes among the figure, 2. electrical generator excited signal leading-in end, 3 judgement aerotron, 4. delay capacitor, 5. switch triodes, 6. power gain aerotron, 7. buzzer phone, 8. adjustable resistance, 9. photoconductive cell, 10. optically-controlled signal amplifying triode, 11. photoswitch aerotrons.

Wherein electric capacity 4. and resistance 12 are formed delay control circuit, aerotron 3. constitutes decision circuitry separately, aerotron 5. and its current-limiting resistance, aerotron 11. and its base stage zener diode constitute switch circuit respectively, but resistance trimming 8. and photoconductive cell 9. constitute photosensitive circuit, and three utmost points 6. and its current-limiting resistance, aerotron 11 and its current-limiting resistance constitute amplifying circuit respectively

Specific embodiments

Controlled modulating signal leading-in end 1, electrical generator excited signal leading-in end 2, photoconductive cell 9, buzzer phone 7 among Fig. 1 are drawn by circuit card and to be connected on corresponding place.Main body cover can be bonded at the place that any space allows with screw or all purpose adhesive, buzzer phone is connected in the audibility range of chaufeur, photoconductive cell is connected on the local aerotron 6 and the aerotron 10 of can sense ambient light and not influenced by other light and selects the bigger switch triode of power ratio for use, and its excess-three can be selected the small power switch aerotron for use.Aerotron 5 and aerotron 11 are positive-negative-positive, and all the other are the NPN type.When buzzer phone or use the power ratio of other warning devices instead and can connect a relay on the position at buzzer phone when big, the main contact of relay is controlled the through and off of warning device again.The resistance value that changes adjustable resistance 8 can change the intensity that plays light modulation of this monitor, therefore, can change 8 resistance value according to the difference of photoconductive cell installation site.

Claims (2)

1. vehicle lights monitor, by decision circuitry, time delay circuit, switch circuit, amplifying circuit, buzzer phone, photosensitive circuit is composited, it is characterized in that: the output of decision circuitry links to each other with the emitter of switch triode 5, the output of switch circuit links to each other with the base stage of amplifying circuit aerotron 6, buzzer phone is connected in the amplifying circuit, the output of time delay circuit links to each other with the base stage of aerotron 5, the output of photosensitive circuit links to each other with the base stage of photoswitch aerotron 11, the control coil of relay K M is connected in the output loop of light-controlled switching circuit, is connected in parallel on the two ends of electric capacity 4 after the open contact capacitances in series of relay K M.

2. vehicle lights monitor according to claim 1 is characterized in that: this product and vehicle lighting fixture also connect.

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