CN204681645U - A kind of manual air conditioning controller secondary lighting control circuit - Google Patents

A kind of manual air conditioning controller secondary lighting control circuit Download PDF

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Publication number
CN204681645U
CN204681645U CN201520380093.5U CN201520380093U CN204681645U CN 204681645 U CN204681645 U CN 204681645U CN 201520380093 U CN201520380093 U CN 201520380093U CN 204681645 U CN204681645 U CN 204681645U
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China
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resistance
triode
unit
air conditioning
conditioning controller
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CN201520380093.5U
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Chinese (zh)
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梁展鸿
付源
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Huizhou Desay SV Automotive Co Ltd
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Huizhou Desay SV Automotive Co Ltd
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Abstract

The utility model provides a kind of manual air conditioning controller secondary lighting control circuit, comprise the self-lock switch connecting manual air conditioning controller, one end is connected to self-lock switch and is used to indicate indicator light and the resistance light-adjusting module of self-lock switch state, the described indicator light other end is connected to resistance light-adjusting module, described resistance light-adjusting module comprises the first resistance unit and the second resistance unit that one end is connected to indicator light jointly, the other end of described first resistance unit connects the first triode unit for controlling the first resistance unit conducting, the other end of described second resistance unit connects the second triode unit for controlling the second resistance unit conducting, described second triode unit also connects and is controlled by system triggers signal thus the inverter trigger element controlling the second triode cell conduction, MCU and LDO is introduced without the need to passing through, there is structure simple, be easy to realize, versatility is high, cost is low, the advantages such as the construction cycle is short.

Description

A kind of manual air conditioning controller secondary lighting control circuit
Technical field
The utility model relates to a kind of lighting control circuit, particularly manual air conditioning controller secondary lighting control circuit.
Background technology
Manual air conditioning controller in use, according to day or night luminance difference larger need, secondary light function is set, namely time by day, the indicator light brightness of manual air conditioning controller is higher, during evening, the brightness of indicator light is lower, and the secondary light function of current manual air conditioning controller needs the input signal first being detected backlight by MCU, then MCU sends PWM control triode thus makes the dimmed one-level of indicator light.This control strategy introduces MCU, and that must introduce LDO power supply chip simultaneously, and the shortcomings such as it is high that such control strategy has cost, and the construction cycle is longer, are unfavorable for the development of industry.
Utility model content
In view of this, the technical problems to be solved in the utility model is to provide the manual air conditioning controller secondary lighting control circuit of a kind of low cost, easily realization.
For solving the problems of the technologies described above, the technical scheme that the utility model provides is: a kind of manual air conditioning controller secondary lighting control circuit, comprise the self-lock switch connecting manual air conditioning controller, one end is connected to self-lock switch and is used to indicate indicator light and the resistance light-adjusting module of self-lock switch state, the described indicator light other end is connected to resistance light-adjusting module, described resistance light-adjusting module comprises the first resistance unit and the second resistance unit that one end is connected to indicator light jointly, the other end of described first resistance unit connects the first triode unit for controlling the first resistance unit conducting, the other end of described second resistance unit connects the second triode unit for controlling the second resistance unit conducting, described second triode unit also connects and is controlled by system triggers signal thus the inverter trigger element controlling the second triode cell conduction.
Preferably, described first triode unit comprises the first triode, and the first transistor collector is connected to the first resistance unit, grounded emitter, and base stage is connected to self-lock switch simultaneously by another grounding through resistance by a resistance;
Described second triode unit comprises the second triode, and the second transistor collector is connected to the second resistance unit, grounded emitter, and base stage is connected to self-lock switch simultaneously by another grounding through resistance by a resistance.
Preferably, described inverter trigger element comprises the 3rd triode, and the 3rd transistor collector connects the base stage of the second triode, grounded emitter, base stage connects manual air conditioning controller system triggers signal output part, simultaneously by another grounding through resistance by a resistance.
Preferably, described self-lock switch one end connects the triggering signal output of manual air conditioning controller, and the other end connects level switch terminal of the high end, is changed the level height of the triggering signal output of access manual air conditioning controller by the switching of self-lock switch.
Compared with prior art, the utility model tool has the following advantages:
The utility model provides a kind of manual air conditioning controller secondary lighting control circuit, self-lock switch and inverter trigger element is adopted to select the resistance quantity controlling to access indicator light, change input current size is reached by changing access resistance, thus reach the object of the brightness changing indicator light, without the need to by introducing MCU and LDO, there is structure simple, be easy to realize, the advantages such as versatility is high, and cost is low, and the construction cycle is short.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment manual air conditioning controller system block diagram.
Fig. 2 is the utility model embodiment self-lock switch connecting circuit schematic diagram.
Fig. 3 is the utility model embodiment manual air conditioning controller secondary lighting control circuit figure.
Embodiment
The utility model to be explained in further detail below in conjunction with accompanying drawing and embodiment for the ease of it will be appreciated by those skilled in the art that.
Be illustrated in figure 1 manual air conditioning controller system block diagram, comprise inner-outer circulation circuit for controlling motor, compressor Control Cprant, backlight lamp control circuit, REC indicator light secondary circuit and AC indicator light secondary circuit, wherein REC indicator light secondary circuit is connected to the REC end of inner-outer circulation circuit for controlling motor, AC indicator light secondary circuit connects the AC_REQ end of compressor Control Cprant, REC indicator light secondary circuit wherein and AC indicator light secondary circuit are manual air conditioning controller secondary lighting control circuit described in the utility model, the present embodiment describes REC indicator light secondary circuit in detail, AC indicator light secondary circuit structural principle is identical with REC indicator light secondary circuit, this control circuit can be applicable in vehicle-mounted multiple control circuit, indicator light switch function is switched by self-lock switch, and reach secondary dimming function by inverter cut-off current-limiting resistance, replace existing employing MCU control and introduce the high cost scheme of LDO, there is cost low, the advantages such as the construction cycle is short.
Be illustrated in figure 2 self-lock switch connecting circuit schematic diagram, common port 2 pin of this self-lock switch K1 and 5 pin are connected to FRESH and the REC end of inner-outer circulation circuit for controlling motor by diode D1 and diode D2, diode D1 is connected inner-outer circulation circuit for controlling motor with the negative pole of diode D2, simultaneously by electric capacity C1 and electric capacity C2 ground connection, self-lock switch K1 also comprises movable end and connects pin 6 pin, 4 pin, 1 pin and 3 pin, wherein 6 pin are connected high level output end KL15_PORT with 3 pin, 4 pin and 1 pin ground connection, when self-lock switch is not pressed, 5 pin are connected to 6 pin, 2 pin are connected to 1 pin, now FRESH voltage is high level, REC voltage is low level, inner-outer circulation motor is in outer circulation state, after self-lock switch is pressed, 5 pin are connected to 4 pin, and 2 pin are connected to 3 pin, and now FRESH voltage is low level, and REC voltage is high level, and inner-outer circulation motor is in Inner eycle state.
Be illustrated in figure 3 manual air conditioning controller secondary lighting control circuit figure, comprise self-lock switch as shown in Figure 2, indicator light, resistance light-adjusting module, first triode unit, second triode unit and inverter trigger element, wherein indicator light adopts light-emitting diode D3, the positive pole of light-emitting diode D3 connects the REC end of self-lock switch, negative pole contact resistance light-adjusting module, described resistance light-adjusting module comprises the first resistance unit and the second resistance unit, first resistance unit comprises resistance R1 parallel with one another and resistance R2, the negative pole of one end connecting luminous diode D3 after resistance R1 and resistance R2 parallel connection, the other end connects the first triode unit, second resistance unit comprises resistance R3 parallel with one another and resistance R4, the negative pole of one end connecting luminous diode D3 after resistance R3 and resistance R4 parallel connection, and the other end connects the second triode unit, described first triode unit comprises the first triode T1, the collector electrode of the first triode T1 connects the first resistance unit, grounded emitter, and base stage connects the REC end of self-lock switch by resistance R5, be received from the level signal of lock-switch, simultaneously by resistance R6 ground connection, described second triode unit comprises the second triode T2, the collector electrode of the second triode T2 connects the second resistance unit, grounded emitter, and base stage connects the REC end of self-lock switch by resistance R8, be received from the level signal of lock-switch, simultaneously by resistance R7 ground connection, described inverter trigger element comprises the 3rd triode T3, the collector electrode of the 3rd triode T3 connects the base stage of the second triode T2, the grounded emitter of the 3rd triode T3, base stage connects manual air conditioning controller system triggers signal ILL+, simultaneously by resistance R9 ground connection by resistance R10.
When being in day mode, the unsettled input of manual air conditioning controller system triggers signal ILL+, if now self-lock switch K1 presses, namely REC end is high level, first triode T1 conducting, second triode T2 also conducting, the 3rd triode T3 not conducting, now the resistance of connecting luminous diode D3 is resistance R1, resistance R2, resistance R3 and resistance R4;
When being in night mode, manual air conditioning controller system triggers signal ILL+ is high level input, 3rd triode T3 conducting, if now self-lock switch K1 presses, namely REC end is high level, the first triode T1 conducting, and the 3rd triode T3 is by anti-phase for high level low level output to the second triode T2 that is converted into, second triode T2 not conducting, now the resistance of connecting luminous diode D3 is resistance R1 and resistance R2;
Be greater than night mode by the resistance of light-emitting diode D3 during day mode, therefore during night mode, resistance strengthens, electric current reduces, and light-emitting diode D3 brightness reduces, thus realizes secondary dimming function.
In the utility model, the not concrete functional module introduced all can adopt ripe functional module of the prior art, such as manual air conditioning controller system etc.
Be more than wherein specific implementation of the present utility model, it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these apparent replacement forms all belong to protection range of the present utility model.

Claims (4)

1. a manual air conditioning controller secondary lighting control circuit, it is characterized in that: comprise the self-lock switch connecting manual air conditioning controller, one end is connected to self-lock switch and is used to indicate indicator light and the resistance light-adjusting module of self-lock switch state, the described indicator light other end is connected to resistance light-adjusting module, described resistance light-adjusting module comprises the first resistance unit and the second resistance unit that one end is connected to indicator light jointly, the other end of described first resistance unit connects the first triode unit for controlling the first resistance unit conducting, the other end of described second resistance unit connects the second triode unit for controlling the second resistance unit conducting, described second triode unit also connects and is controlled by system triggers signal thus the inverter trigger element controlling the second triode cell conduction.
2. manual air conditioning controller secondary lighting control circuit according to claim 1, it is characterized in that: described first triode unit comprises the first triode, first transistor collector is connected to the first resistance unit, grounded emitter, base stage is connected to self-lock switch simultaneously by another grounding through resistance by a resistance;
Described second triode unit comprises the second triode, and the second transistor collector is connected to the second resistance unit, grounded emitter, and base stage is connected to self-lock switch simultaneously by another grounding through resistance by a resistance.
3. manual air conditioning controller secondary lighting control circuit according to claim 2, it is characterized in that: described inverter trigger element comprises the 3rd triode, 3rd transistor collector connects the base stage of the second triode, grounded emitter, base stage connects manual air conditioning controller system triggers signal output part, simultaneously by another grounding through resistance by a resistance.
4. manual air conditioning controller secondary lighting control circuit according to claim 3, it is characterized in that: described self-lock switch one end connects the triggering signal output of manual air conditioning controller, the other end connects level switch terminal of the high end, is changed the level height of the triggering signal output of access manual air conditioning controller by the switching of self-lock switch.
CN201520380093.5U 2015-06-05 2015-06-05 A kind of manual air conditioning controller secondary lighting control circuit Active CN204681645U (en)

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Application Number Priority Date Filing Date Title
CN201520380093.5U CN204681645U (en) 2015-06-05 2015-06-05 A kind of manual air conditioning controller secondary lighting control circuit

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Application Number Priority Date Filing Date Title
CN201520380093.5U CN204681645U (en) 2015-06-05 2015-06-05 A kind of manual air conditioning controller secondary lighting control circuit

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CN204681645U true CN204681645U (en) 2015-09-30

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111081192A (en) * 2019-12-05 2020-04-28 芜湖宏景电子股份有限公司 Two-stage brightness control circuit for backlight lamp of vehicle-mounted multimedia display screen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111081192A (en) * 2019-12-05 2020-04-28 芜湖宏景电子股份有限公司 Two-stage brightness control circuit for backlight lamp of vehicle-mounted multimedia display screen

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