CN2241084Y - Automotive outer lamp work state monitor - Google Patents

Abstract

The utility model relates to an automotive outer lamp work state monitor, comprising a casing, a switch S, a vehicle lamp L and a plurality of control circuits 4. The utility model is characterized in that the control circuit 4 is composed of a V< T >, a V< D >, an R< 2 >, an R< 3 > and an R< 3 >, wherein, the V< T > is a PNP type silicon audion whose emitter is connected with the lamp switch S and connected with the lamp L via the current-limiting resistor R< 2 >; the collector of the V< T > is connected with the positive pole of the light-emitting diode V< D > via the step-down resistor R< 3 >; the other pole of the V< D > is connected with the negative pole of a power source; the sampling resistor R< 1 > is series-connected with the lamp L which needs to be monitored, and the R< 1 > is connected with the base of the V< T >. The utility model has the advantages that the structure is simple; the cost is low; the reliability is strong; the utility model is suitable for monitoring the working conditions of the outer lamps of various automobiles.

Description

Automobile embarkation lamp mode of operation monitor

The utility model relates to automobile embarkation lamp monitor, particularly about a kind of monitor of monitoring the automobile embarkation lamp mode of operation in travelling that is applicable to, belongs to car accessories.

Existing automobile is not equipped with the car light monitor usually, has only in the ultra-luxury mode roadlice of only a few expensive micro computer car light monitoring system is housed.The automobile that the car light monitor is not housed in the process of moving, as automobile embarkation lamp et out of order, chaufeur in the car can not in time be found, and other vehicle drivers also can't judge the purpose of travelling of front automobile, thereby be easy to bring out traffic accident, brought many inconvenience and safety hazard to people.

The purpose of this utility model provides a kind of automobile embarkation lamp mode of operation monitor that can monitor and in time provide automobile embarkation lamp mode of operation automatically simple in structure, cheap.

The utility model be achieved in that one of preparation can in dress electronic circuit board and having on the whole if in the casing in individual hole, design a control circuit, it is characterized in that described control circuit (4) is by aerotron V _T, light-emitting diode V _D, current-limiting resistance R ₂, dropping resistor R ₃, sample resistance R ₁Constitute, wherein aerotron V _TEmitter and lighting switch S join aerotron V _TBase stage through current-limiting resistance R ₂L joins with car light, and collecting electrode is through dropping resistor R ₃Be connected on light-emitting diode V _TPositive pole, the other end power connection negative pole of light-emitting diode.Aerotron V in described control circuit _TBase stage on be connected to and will supervise the sample resistance R that the car light bulb that shows is in series ₁Aerotron V in the described automobile embarkation lamp mode of operation monitor _TBe the positive-negative-positive silicone tube, R ₂Resistance between (1～2K Ω), R ₃Resistance between (1～2K Ω), R ₁Resistance between (0.1～0.3 Ω).Light-emitting diode V _DLuminous color is monochrome and polychrome.It is gone into a control circuit.When embarkation lamp is intact, the V in the circuit _TConducting, thus make V in the circuit _DLight, as embarkation lamp bubble et out of order, V _TBe in off condition, V _DExtinguish, thereby reach the purpose that automatic prison shows the mode of operation of embarkation lamp.Can form corresponding one by one each car light of several control circuits according to the car light quantity in the vehicle during use.

The utility model is simple in structure, is discrete device because of what adopt, thus with low cost, good reliability, easy for installation, be applicable to the automobile of any kind.

Below in conjunction with accompanying drawing the utility model one embodiment is elaborated.

Fig. 1 is the shape assumption diagram of the utility model embodiment;

Fig. 2 is the electrical schematic diagram of the utility model embodiment.

Among Fig. 11 is casing, and 2 is panel, and 3 is hole of light emitting diode.S among Fig. 2 is the switch S of automobile embarkation lamp, and L is the embarkation lamp bubble, and 4 among Fig. 2 is control circuit.As shown in Figure 1, 2, the utility model constitutes by 13 control circuits 4 are housed in shell 1, panel 2 and the machine, and 13 its detections of Kong Zhongyong and prison that 13 light-emitting diodes in 13 control circuits are placed on the panel show 13 embarkation lamps of automobile.Each control circuit (being control circuit 4) is by aerotron V _T, current-limiting resistance R ₂, dropping resistor R ₂, sample resistance R ₁, lighting switch S, car light L constitutes.Aerotron V wherein _TSelect PNP (9012) silicone tube for use, its emitter and lighting switch S join, and base stage is through current-limiting resistance R ₂(1,4K Ω) joins with car light L, and collecting electrode is through dropping resistor R ₃(1K Ω) is connected on light-emitting diode V _DPositive pole, light-emitting diode V _DOther end power connection negative pole.Sample resistance R ₁(0.2 Ω) is connected on R ₂And between the lighting switch S.Then 13 control circuits are connected together.Each control circuit electricity principle is as follows:

As shown in Figure 2, if automobile is wanted right-hand corner, the chaufeur right-hand corner embarkation lamp switch that can close, sample resistance R ₁Produce dividing potential drop V with the internal resistance (this internal resistance is as control circuit adjunction sample resistance) of embarkation lamp bulb L at the B point _B, because V _A) V _B, produce a certain amount of base current, thereby make transistor V _TConducting forms positive source → switch S → V _TThe e utmost point → V _TThe c utmost point → R ₃→ V _DCurrent return, this electric current can make light-emitting diode light, and when embarkation lamp L damages or during bad contact, V _TDo not produce base current, be in and end.Light-emitting diode V _DDo not have electric current to pass through, so light-emitting diode do not work, chaufeur can judge immediately that this road embarkation lamp has fault.

Claims (3)

1. an automobile embarkation lamp mode of operation monitor comprises casing (1), panel (2), hole of light emitting diode (3), lighting switch S, car light L, control circuit, it is characterized in that described control circuit (4) is by aerotron V _T, light-emitting diode V _D, current-limiting resistance R ₂, dropping resistor R ₃Constitute, wherein the emitter of aerotron and lighting switch S join, and the base stage of aerotron is through current-limiting resistance R ₂L joins with car light, and collecting electrode is through dropping resistor R ₃Be connected on light-emitting diode V _DPositive pole, light-emitting diode V _DOther end power connection negative pole.

2. automobile embarkation lamp mode of operation monitor as claimed in claim 1 is characterized in that the aerotron V in the described control circuit _TBase stage on be connected to and will supervise the sample resistance R that the car light L that shows is in series ₁

3. as claim 1,2 described automobile embarkation lamp mode of operation monitors, it is characterized in that above-mentioned aerotron V _TBe the silicone tube of positive-negative-positive, R ₂Be (1-2K Ω) current-limiting resistance, R ₃Be (1-2K Ω) dropping resistor, R ₁Be the sample resistance of (0.1-0.3 Ω), light-emitting diode V _DLuminous color is monochrome and polychrome.

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