CN201523476U

CN201523476U - Automobile xenon lamp decoder

Info

Publication number: CN201523476U
Application number: CN2009201424621U
Authority: CN
Inventors: 曹军
Original assignee: TAICANG ETHER POWER ELECTRONICS TECHNOLOGY Co Ltd
Current assignee: TAICANG ETHER POWER ELECTRONICS TECHNOLOGY Co Ltd
Priority date: 2009-04-15
Filing date: 2009-04-15
Publication date: 2010-07-07
Anticipated expiration: 2019-04-15

Abstract

The utility model discloses an automobile xenon lamp decoder, which comprises two input ports, two output ports, an RC relay circuit, a field-effect tube, a halogen lamp simulated resistor, an inductance and a capacitor. The RC relay circuit is electrically connected among the two input ports and the two output ports; a grid electrode of the field-effect tube is connected to a common connecting end of a resistor and a capacitor of the RC relay circuit; the halogen lamp simulated resistor is electrically connected between a drain electrode and a source electrode of the field-effect tube; the inductance is in series connection between a positive input port and a positive output port; and the capacitor is in parallel connection with the inductance to form an LC loop connected with the drain electrode of the field-effect tube. The automobile xenon lamp decoder can be used as a simulated halogen lamp in the moment of lighting up, and the simulated halogen lamp enables the circuit to form a loop under the condition of inputting pulse signals, thereby smoothly detecting lines of a lamp system. After detection is finished, inputted lighting signals ensure xenon lamps on an automobile to be lit up normally, thereby the decoder has comparatively large expanded applicability.

Description

Vehicle xenon lamp decoder

Technical field

The utility model belongs to vehicle electric field, relates in particular to lighting control system on the automobile.

Background technology

The certain model automobile is in lamp control on the market, exist following control mode: at auto lamp is under the Halogen lamp LED situation, moment is when starting, automotive control system can send lasting pulse signal at the utmost point in the short time, this signal acts in the lamp system loop, be used for detecting the circuit of lamp system, then normally light a lamp after detection is normal.And as on the basis of this control mode, if auto lamp adopts when being xenon lamp, because the characteristics of xenon lamp, what charge between its two electrode is inert gas, is equivalent to be in open-circuit condition (the based on halogen bulb electrode is a tungsten filament, only has small resistor) when not lighting a lamp, the auto lamp control system can judge that this circuit is in open-circuit condition so, make the alarm command of the lamp that do not work, make xenon lamp can not normally enter the program of lighting then, thereby influence is used.

The utility model content

Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art a kind of carrying out as usual of wireline inspection that both can guarantee is provided, simultaneously the decoder that can light the xenon lamp on the automobile again.

For solving above technical problem, the utility model adopts following technical scheme: a kind of vehicle xenon lamp decoder, it comprises two input ports, two output ports, be connected electrically in the RC delay circuit between two input ports and two output ports, the field effect transistor that grid and the resistance of RC delay circuit are connected with the electric capacity common connection end, be connected electrically in the drain electrode of described field effect transistor and the Halogen lamp LED artifical resistance between the source electrode, be serially connected in inductance between positive input port and the positive output port, being in parallel with described inductance is connected to form the electric capacity in LC loop, and described LC loop is connected with the drain electrode of field effect transistor.

Further, also be in series with between the grid of described positive input port and field effect transistor and be used for the fly-wheel diode of energy back to the importation.

Be electrically connected with voltage stabilizing didoe between described fet gate and the negative input end.

Described field effect transistor is a N ditch enhancement transistor.

Because the enforcement of above technical scheme, the utility model compared with prior art has following advantage: the utility model can be simulated Halogen lamp LED in the moment of lighting a lamp and be used, the simulation Halogen lamp LED makes this circuit form the loop under the situation of input pulse signal, thereby the circuit to lamp system detects smoothly, after detection is finished, xenon lamp on the some modulating signal assurance automobile of input is normally lighted, and therefore, the utility model decoder has bigger extended application.

Description of drawings

Accompanying drawing 1 is the utility model xenon lamp decoder circuit schematic diagram;

Embodiment

Below in conjunction with accompanying drawing the utility model preferred embodiment is elaborated:

Decoder circuit as shown in Figure 1, it comprises input port IN+, IN-, output port OUT+, OUT-, be connected electrically in two input port IN+, IN-and two output port OUT+, RC delay circuit 1 between the OUT-, the field effect transistor Q1 that grid and the resistance R 1 of RC delay circuit 1 are connected with capacitor C 1 common connection end, be connected electrically in the drain electrode of described field effect transistor Q1 and the Halogen lamp LED artifical resistance R4 between the source electrode, be serially connected in inductance L 1 between positive input port IN+ and the positive output port OUT+, the capacitor C 1 that is in parallel and is connected to form the LC loop with described inductance L 1, C2, and described LC loop C1, C2 is connected with the drain electrode of field effect transistor Q1.Wherein, field effect transistor Q1 is a N ditch enhancement transistor, and the resistance of the tungsten filament in the resistance of Halogen lamp LED artifical resistance R4 and the based on halogen bulb is identical.

Between the grid of positive input port IN+ and field effect transistor Q1, also be in series with and be used for the sustained diode 1 of energy back to the importation.

Between field effect transistor Q1 grid and negative input end IN-, be electrically connected with voltage stabilizing didoe D2.

Concrete operation principle is as follows: if on the automobile xenon lamp has been installed, when starting the headlight for vehicles control system so, this control system is at first sent lasting pulse signal, capacitor C 2, C3 are the states that is in instantaneous short circuit in moment, pulse signal will act on Halogen lamp LED artifical resistance R4, and the resistance of R4 is identical with the resistance of tungsten filament in the based on halogen bulb, constitutes the loop with this, so during this impulse action, but situation of real simulation Halogen lamp LED.Resistance R 1, capacitor C 1 play delayed action in the delay circuit, guarantee that field effect transistor (MOSFET) Q1 is in not on-state during this period, after the control impuls detection is finished, control system will be sent a modulating signal, and capacitor C 1, C2, C3 charging at this moment also finished substantially, and field effect transistor Q1 just is in conducting state, resistance R 4 is by the Q1 short circuit, capacitor C 2, C3 and inductance L 1 are carried out filtering, are supplied to ballast with xenon lamp work thereby export stable voltage, guarantee normally lighting a lamp of xenon lamp.

Can simulate the situation of Halogen lamp LED in the moment of lighting a lamp, after pulse signal carries out the detection of circuit equally, finish normally lighting a lamp of xenon lamp.Can guarantee carrying out as usual of wireline inspection like this, keep the fail safe of circuit, can keep normally lighting a lamp of xenon lamp again.

The foregoing description only is explanation technical conceive of the present utility model and characteristics; its purpose is to allow the personage that is familiar with this art can understand content of the present utility model and is implemented; can not limit protection range of the present utility model with this; all equivalences of doing according to spirit of the present utility model change or modify, and all should be encompassed in the protection range of the present utility model.

Claims

1. vehicle xenon lamp decoder, it is characterized in that: it comprises two input port (IN+, IN-), two output port (OUT+, OUT-), be connected electrically in two input port (IN+, IN-) with two output port (OUT+, OUT-) the RC delay circuit (1) between, the field effect transistor (Q1) that grid and the resistance (R1) of RC delay circuit (1) are connected with electric capacity (C1) common connection end, be connected electrically in the drain electrode of described field effect transistor (Q1) and the Halogen lamp LED artifical resistance (R4) between the source electrode, be serially connected in inductance (L1) between positive input port (IN+) and the positive output port (OUT+), electric capacity (the C1 that is in parallel and is connected to form the LC loop with described inductance (L1), and described LC loop (C1 C2),, C2) drain electrode with field effect transistor (Q1) is connected.

2. vehicle xenon lamp decoder according to claim 1 is characterized in that: also be in series with between the grid of described positive input port (IN+) and field effect transistor (Q1) and be used for the fly-wheel diode (D1) of energy back to the importation.

3. vehicle xenon lamp decoder according to claim 1 and 2 is characterized in that: be electrically connected with voltage stabilizing didoe (D2) between described field effect transistor (Q1) grid and the negative input end (IN-).

4. vehicle xenon lamp decoder according to claim 1 is characterized in that: described field effect transistor (Q1) is a N ditch enhancement transistor.