CN202389310U - Control circuit of automobile electronic combination instrument - Google Patents
Control circuit of automobile electronic combination instrument Download PDFInfo
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- CN202389310U CN202389310U CN2011204620363U CN201120462036U CN202389310U CN 202389310 U CN202389310 U CN 202389310U CN 2011204620363 U CN2011204620363 U CN 2011204620363U CN 201120462036 U CN201120462036 U CN 201120462036U CN 202389310 U CN202389310 U CN 202389310U
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- power supply
- combination instrument
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Abstract
The utility model relates to a control circuit of an automobile electronic combination instrument, belonging to the technical field of power-on timing sequence control of an automobile instrument. The control circuit mainly solves the problem that the existing great majority of truck combination instruments are started by a single ignition lock and a power supply of a whole automobile can not be sampled and controlled. The control circuit is characterized by comprising a comparison control circuit, an input triode amplifying circuit, a storage battery cathode control input circuit and an output triode control circuit; a triode collector electrode of the input triode amplifying circuit is connected with a first power supply voltage bleeder circuit; a base electrode is connected with an ignition voltage bleeder circuit; an emission electrode is connected with a NOR gate integrated circuit; the storage battery cathode control input circuit comprises a diode and a second power supply voltage bleeder circuit, which are serially connected; and a collector electrode of the output triode control circuit is a voltage power supply end of the combination instrument. The control circuit of the automobile electronic combination instrument has the characteristics of convenience for maintaining the whole automobile, reduction of special pieces and capability of realizing the function of the instrument of the whole automobile by a low cost; and the control circuit is mainly used for the automobile electronic combination instrument.
Description
Technical field
The utility model belongs to auto meter electrifying timing sequence control technology field.Be specifically related to a kind of vehicle electronics combination instrument control circuit.
Background technology
The combination instrument of present most of trucies all adopts the mono-ignition lock to start in the logical sequence definition that instrument is powered on, and does not have pair car load power supply to carry out the function of controlling of sampling.
Domestic general instrument all is to adopt the B+ master mode simultaneously, seldom adopts the battery negative post master mode.Just need carry out special electrifying timing sequence control to the instrument of battery negative post master mode, and then reach strict control and the processing on the instrument electrifying timing sequence.
Summary of the invention
The purpose of the utility model is exactly that a kind of vehicle electronics combination instrument control circuit to the control of the electrifying timing sequence under battery negative post state of a control definition is provided to above-mentioned deficiency.
The technical solution of the utility model is: a kind of vehicle electronics combination instrument control circuit is characterized in that: comprise the comparison control circuit that constitutes by the joint denial gate IC and with this joint denial gate IC the 1st input end bonded assembly input transistor amplifier, with the 2nd input end bonded assembly battery negative post control input circuit, with mouth bonded assembly output triode control circuit; Wherein, the transistor collector of input transistor amplifier is connected with the 1st power supply voltage bleeder circuit, and transistor base is connected with the ignition tension bleeder circuit, and transistor emitter AND OR NOT gate IC the 1st input end connects; Battery negative post control input circuit comprises the diode and the 2nd power supply voltage bleeder circuit of serial connection, and the 2nd power supply voltage bleeder circuit AND OR NOT gate IC the 2nd input end connects; The current collection of output triode control circuit is vehicle electronics combination instrument power voltage supply end very.
Ignition tension bleeder circuit described in the technical solution of the utility model is by series connected resistance and be attempted by that ohmically electric capacity constitutes between ignition tension end AND OR NOT gate IC the 1st input end.
The 2nd power supply voltage bleeder circuit in battery negative post described in the technical solution of the utility model control input circuit is by series connected resistance and be attempted by that ohmically electric capacity constitutes between ground terminal AND OR NOT gate IC the 2nd input end.
Be provided with the capacitance-resistance bleeder circuit between joint denial gate ic output described in the technical solution of the utility model and the output triode amplifying circuit, wherein and the resistance that connects, electric capacity be connected in parallel between the base stage and emitter of aerotron.
The voltage branch circuit that the 1st power supply voltage bleeder circuit described in the technical solution of the utility model is made up of the resistance that is connected in series.
Joint denial gate IC feeder ear described in the technical solution of the utility model is provided with the power supply voltage mu balanced circuit of being made up of the resistance of serial connection and zener diode.
The utility model is owing to adopt the comparison control circuit that is made up of the joint denial gate IC; And with this joint denial gate IC the 1st input end bonded assembly input transistor amplifier, with the 2nd input end bonded assembly battery negative post control input circuit, with mouth bonded assembly output triode control circuit; Thereby have when joint denial gate IC the 1st, the 2nd input end is low level output triode control circuit output high level, otherwise output low level; Promptly realize connecting when ignition lock; When battery negative post was controlled to be high level simultaneously, output triode control circuit output high level was connected the power supply of vehicle electronics combination instrument; Otherwise do not give the power supply of vehicle electronics combination instrument, reach the purpose of the utility model.It is easy to maintenance to the utlity model has car load, reduces special purpose parts, and the characteristics of implemented with low cost car load instrument function.The utility model is mainly used in the vehicle electronics combination instrument.
Description of drawings
Fig. 1 is the circuit diagram of the utility model.
The specific embodiment
As shown in Figure 1.The utility model vehicle electronics combination instrument control circuit is imported transistor amplifier, is controlled input circuit, forms with mouth bonded assembly output triode control circuit with the 2nd input end bonded assembly battery negative post by joint denial gate IC U1 and with this joint denial gate IC U1 the 1st input end bonded assembly.
The aerotron T1 collecting electrode of input transistor amplifier is connected with the 1st power supply voltage bleeder circuit, and aerotron T1 base stage is connected with the ignition tension bleeder circuit, and aerotron T1 emitter AND OR NOT gate IC U1 the 1st input end connects.The ignition tension bleeder circuit is by series connected resistance R 1, R2 and be attempted by that the capacitor C 1 on the resistance R 2 constitutes between ignition tension end AND OR NOT gate IC the 1st input end, and required voltage is carried out obtaining of voltage source, and capacitor C 1 is as the usefulness of Filtering Processing.The 1st power supply voltage bleeder circuit carries out obtaining of voltage source by the resistance R 3 of serial connection, the voltage branch circuit that R4 constitutes to required voltage.
Battery negative post control input circuit comprises the diode D1 and the 2nd power supply voltage bleeder circuit of serial connection, and the 2nd power supply voltage bleeder circuit AND OR NOT gate IC U1 the 2nd input end connects.The 2nd power supply voltage bleeder circuit is by series connected resistance R 5, R6 and be attempted by that the capacitor C 2 on the resistance R 6 constitutes between ground terminal AND OR NOT gate IC U1 the 2nd input end, and required voltage is carried out obtaining of voltage source, and capacitor C 2 is as the usefulness of Filtering Processing.
Joint denial gate IC U1 feeder ear the 5th end is provided with the power supply voltage mu balanced circuit of being made up of the resistance R 7, R8 and the zener diode VD1 that are connected in series, and required voltage is carried out obtaining of voltage source, and resulting voltage source is carried out the stable of voltage.The resistor group zoarium provides certain required voltage value, and zener diode VD1 then carries out the voltage voltage stabilizing to the magnitude of voltage that is collected to be handled.
Joint denial gate IC U1 constitutes comparison control circuit, and the level state of being sampled is handled, and obtains required certain logic control.Be provided with the capacitance-resistance bleeder circuit between joint denial gate IC U1 mouth and the output triode amplifying circuit; Wherein and the resistance R 9 that connects, R10, capacitor C 3 be connected in parallel between the base stage and emitter of aerotron T2; Required voltage is carried out obtaining of voltage source, and capacitor C 3 is as the usefulness of Filtering Processing.The current collection of aerotron T2 is vehicle electronics combination instrument power voltage supply end very, and the end points of required control is carried out control corresponding.Bleeder circuit is the most basic dividing potential drop scale unit.The IC chip of joint denial gate logical process function, its required peripheral components is considerably less, only need provide the logic level of one group of voltage source and 2 kinds of input states can obtain a stable level output state to this chip.Through changing the voltage status of collector output of this magnitude of voltage and then control aerotron.
The symbol brief analysis:
V+ car load instrument power voltage, IN1 car load ignition lock signal voltage, IN2 sampled signal end, OUT control output end, Va U1 chip 1 pin voltage, Vb U1 chip 2 pin voltages, Vy U1 chip 4 pin voltages.
Concrete work schedule is set forth as follows:
The voltage that resistance R 1, R2 and C1 receive the IN1 termination carries out dividing potential drop, obtains a magnitude of voltage V2, and V2 drives aerotron T1; Bleeder circuit by R3 and R4 constitute jointly provides voltage for the collecting electrode of T1.This one the tunnel is a processing unit to the IN1 voltage signal.
When IN1 was low level, then V2 magnitude of voltage all-the-time stable was at the low voltage shape, and the base stage of T1 does not receive electricity, even V1 is a high level, then aerotron T1 is in off condition all the time; When IN1 is high level, the bleeder circuit dividing potential drop that process R1 and R2 are combined into, causing V2 is high potential; Because the collecting electrode of T1 is a high level state always; This moment, T1 was in conducting state, and the voltage status of Va becomes low level by instability, because V1 is pind down and is low level; So the Va of this moment approximates (V1-0.7V), is approximately 0V.
Because what R5 and R6 constituted is bleeder circuit, so Vb is a high level, when IN2 was low level, the Vb of this moment was forced and drags down, and the magnitude of voltage of IN2 is about (Vb-0.7V); When IN2 was indeterminate state, the magnitude of voltage of Vb was continued to put height; When IN2 was high level, Vb then remained high level state.
R7, R8, these three components and parts of VD1 constitute the dividing potential drop mu balanced circuit jointly, are V3 and are always high level, stable voltage source are provided for chip U1.U1 is a joint denial gate IC chip, and its first pin and crus secunda are the state input end, its tripod ground connection, and the 4th pin is the mouth after the computing.
Carry out concrete elaboration to the function of U1 at present:
First pin of supposing U1 is A, and crus secunda is B, and tripod is Y, and then when A was high level for high level B, Y was output as low level; When A was high level for low level B, Y was output as low level; When A was nondeterministic statement, no matter which kind of state B was, then Y output is always low level; When A was low level for high level B, Y was output as low level; When A was low level for low level B, Y was output as high level; When A was any state, when B was nondeterministic statement, then Y output was always low level.
Comprehensive the above, learn that could guarantee that Y is output as high level when having A and B only and being low level simultaneously, this characteristic has uniqueness.
Analyze the working mechanism of the control circuit of T2 formation now with following two states:
Y was not output as then low level when first kind of situation: A and B were not low level simultaneously, and the V4 of this moment also is pinned in low level state, the not conducting of T2 aerotron, and the OUT mouth is approximately V+, is high level output.
The output of Y then was high level when second kind of situation: A and B were low level simultaneously; When the 4th pin of U1 was high level, Vy was a high level, and the base tension V4 of T2 is owing to R9, R10, the common bleeder circuit principle of forming of C3 can be known at this moment; The V4 voltage of this moment also is high level; This high level causes the T2 aerotron to handle conducting state, and then mouth OUT end is pind down and is pulled low to earth potential, approximate 0V.
Can know only have only by above analysis, could guarantee that it is low level state that mouth OUT holds, otherwise be high level state as A and B during simultaneously for low level.According to this principle, can realize the operation mechanism of two-way input state decision output state.
This circuit also can carry out the multichannel expansion, to realize the circuit of the single output state of the common decision of multichannel input state.
Claims (6)
1. vehicle electronics combination instrument control circuit is characterized in that: comprise the comparison control circuit that constitutes by the joint denial gate IC and with this joint denial gate IC the 1st input end bonded assembly input transistor amplifier, with the 2nd input end bonded assembly battery negative post control input circuit, with mouth bonded assembly output triode control circuit; Wherein, the transistor collector of input transistor amplifier is connected with the 1st power supply voltage bleeder circuit, and transistor base is connected with the ignition tension bleeder circuit, and transistor emitter AND OR NOT gate IC the 1st input end connects; Battery negative post control input circuit comprises the diode and the 2nd power supply voltage bleeder circuit of serial connection, and the 2nd power supply voltage bleeder circuit AND OR NOT gate IC the 2nd input end connects; The current collection of output triode control circuit is vehicle electronics combination instrument power voltage supply end very.
2. a kind of vehicle electronics combination instrument control circuit according to claim 1 is characterized in that: described ignition tension bleeder circuit is by series connected resistance and be attempted by that ohmically electric capacity constitutes between ignition tension end AND OR NOT gate IC the 1st input end.
3. a kind of vehicle electronics combination instrument control circuit according to claim 1 and 2 is characterized in that: the 2nd power supply voltage bleeder circuit in the described battery negative post control input circuit is by series connected resistance and be attempted by that ohmically electric capacity constitutes between ground terminal AND OR NOT gate IC the 2nd input end.
4. a kind of vehicle electronics combination instrument control circuit according to claim 1 and 2; It is characterized in that: be provided with the capacitance-resistance bleeder circuit between described joint denial gate ic output and the output triode amplifying circuit, wherein and the resistance that connects, electric capacity be connected in parallel between the base stage and emitter of aerotron.
5. a kind of vehicle electronics combination instrument control circuit according to claim 1 and 2 is characterized in that: the voltage branch circuit that described the 1st power supply voltage bleeder circuit is made up of the resistance that is connected in series.
6. a kind of vehicle electronics combination instrument control circuit according to claim 1 and 2 is characterized in that: described joint denial gate IC feeder ear is provided with the power supply voltage mu balanced circuit of being made up of the resistance of serial connection and zener diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204620363U CN202389310U (en) | 2011-11-21 | 2011-11-21 | Control circuit of automobile electronic combination instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204620363U CN202389310U (en) | 2011-11-21 | 2011-11-21 | Control circuit of automobile electronic combination instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202389310U true CN202389310U (en) | 2012-08-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204620363U Expired - Fee Related CN202389310U (en) | 2011-11-21 | 2011-11-21 | Control circuit of automobile electronic combination instrument |
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| Country | Link |
|---|---|
| CN (1) | CN202389310U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109302776A (en) * | 2018-12-06 | 2019-02-01 | 上汽大众汽车有限公司 | A kind of lighting circuit of vehicle switch function instruction |
-
2011
- 2011-11-21 CN CN2011204620363U patent/CN202389310U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109302776A (en) * | 2018-12-06 | 2019-02-01 | 上汽大众汽车有限公司 | A kind of lighting circuit of vehicle switch function instruction |
| CN109302776B (en) * | 2018-12-06 | 2024-02-02 | 上汽大众汽车有限公司 | Lighting circuit for indicating automobile switch function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: DONGFENG AUTOMOBILE ELECTRONICS CO., LTD. Free format text: FORMER NAME: DONGFENG XIANGFAN INSTRUMENT SYSTEMS CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 441001 No. 227 East Daqing Road, Hubei, Xiangyang Patentee after: DONGFENG AUTOMOBILE ELECTRONICS CO., LTD. Address before: 441001 No. 227 East Daqing Road, Hubei, Xiangfan Patentee before: Dongfeng Xiangfan Instrument Systems Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120822 Termination date: 20161121 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |