CN204956266U - Fog lamp control circuit behind car - Google Patents
Fog lamp control circuit behind car Download PDFInfo
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- CN204956266U CN204956266U CN201520608639.8U CN201520608639U CN204956266U CN 204956266 U CN204956266 U CN 204956266U CN 201520608639 U CN201520608639 U CN 201520608639U CN 204956266 U CN204956266 U CN 204956266U
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Abstract
The utility model provides a fog lamp control circuit behind car, fails and passing lamp input unit including back fog lamp output unit, the control unit and lampet, front fog lamp, far -reaching headlamp, the positive terminal of each input unit's diode connects front fog lamp signal, far -reaching headlamp signal and passing lamp signal respectively, and the negative pole end of each diode connects the control unit's 7 feet altogether, lampet input unit includes triode Q1 and first diode, and 3 feet that meet the control unit are simultaneously held with the negative pole of first diode to its projecting pole, and the positive pole of first diode connects little modulating signal, and the collecting electrode connects the control unit's 6 feet, connects the control unit's 4 feet behind the base series connection second resistance, back fog lamp output unit's relay switch's coil both ends connect the control unit's 3 feet and 4 feet, the positive input terminal and back fog lamp output of relay switch's contact difference power connection respectively. Simple, the safe and reliable of this control circuit, it is with low costs, can satisfy among the national standard GB4785 -2007 requirement of the new regulation of fog lamp operating condition behind the automobile.
Description
Technical field
The utility model relates to a kind of car bulb control circuit, particularly relates to a kind of control circuit of rear foglight of automobile.
Background technology
According to the regulation of 4.3.14.7 joint to Auto Rear Fog Lamp mode of operation in standard GB/T 4785-2007:
1., when only having country beam, passing light or adverse-weather lamp to open, fog tail lamp could be opened;
2. fog tail lamp can be closed independent of other any lamps;
3. fog tail lamp can continuous working, till position lamp is closed.Be in closed condition afterwards, until again open always;
4. fog tail lamp work should not by the impact of the open and close of any lamp.
In order to meet the requirement of afore mentioned rules, usually adopt following two kinds of modes: one adopts BCM control system, but high cost; Another kind adopts single chip control module, and not only cost is higher but also technics comparing is complicated for single chip control module.
Have in addition adopt special ASIC, as application-specific integrated circuit (LD3505), although can Simplified flowsheet, control cost, can not meet completely specify in requirements.
The applicant in 2014 application application number be that the utility model patent " a kind of controller for rear fog lamp of automobile " of 2014201695200 is on the basis of control unit IC module LD3505, increase peripheral circuit, overcome the deficiency of above-mentioned prior art preferably, it is made to meet in GB4785-2007 4.3.14.7 to the regulation of fog tail lamp mode of operation, when only having country beam, passing light or adverse-weather lamp to open, fog tail lamp could be opened; Fog tail lamp can be closed independent of other any lamps simultaneously.
This controller circuitry is characterized as:
1. the two ends of the relay coil of fog tail lamp output unit connect 3 pin and 4 pin of control unit respectively; one contact of relay switch connects the electrode input end of power supply; another contact connects fog tail lamp mouth, is connected diode D1 between 3 pin of control unit and the electrode input end of power supply;
2. be also connected in series current-limiting resistance between the negative pole end of diode D2, D3 and D4 and 7 pin of control unit; Lampet signal input part is connected with 6 pin of control unit by silicon control Q1.
Its principle of work is: only have when little modulating signal to connect in (connecing silicon control anode) and adverse-weather lamp, country beam, passing light signal (connecing SCR control pole) three one or more connect d. c. voltage signal input time (having 12V, minimum voltage 7V), just can make silicon control Q1 conducting, make 12V(minimum voltage 7V) vdc input to input end 6 pin of control unit through Q1 silicon control, now by rear fog lamp switch trigging control, opening (bright) or closing (going out) of fog tail lamp can be controlled separately; When fog tail lamp is lighted, as long as keep little modulating signal to input, after turning off adverse-weather lamp, country beam, the input of passing light signal, silicon control does not end, and therefore fog tail lamp can keep lighting, not by the impact whether adverse-weather lamp, country beam, passing light close; Only have by closing rear fog lamp switch, silicon control is cut off, and fog tail lamp is just closed, and now again triggers rear fog lamp switch, and fog tail lamp is not lit.
But should " a kind of controller for rear fog lamp of automobile " exist following not enough:
Due to silicon control components and parts remove excite end (G pole) after need to maintain electric current by therein and keep (conducting of A, K pole) and be in the attribute feature of excited state, and be highly sensitively easier to be subject to the impact of external voltage environmental fluctuating and cause cut-off to turn off, when headlight or adverse-weather lamp are opened, control unit 7 pin is in high level, silicon control Q1 triggering and conducting, 6 pin are made to be in high level, at this moment 1 pin Low level effective activates fog tail lamp unlatching, 7 pin high level disappear, because silicon control Q1 keeps activating conducting state, 6 pin keep high level, fog tail lamp is made to be held open state, now as opened hazard lamp signal moment owing to drawing electric current larger, voltage jump can be caused, in addition the multiple consumer of car body is in parallel, in different consumer handoff procedure, voltage jump is caused due to changed power, voltage jump can affect the A pole of silicon control Q1, cause silicon control inner sustain curent change thus, cause activating conducting state cut-off, 6 pin high level disappear, control unit internal work logic quits work because of power down, there is the error state that fog tail lamp cannot keep.
Summary of the invention
The technical problems to be solved in the utility model is, be that the technical scheme of the utility model patent of 2014201695200 is improved to application number, there is provided a kind of and to meet in GB4785-2007 4.3.14.7 to the requirement of fog tail lamp mode of operation, more safe and reliable a kind of control circuit of rear foglight of automobile, to overcome the above-mentioned deficiency existing for prior art.
The technical scheme that the utility model is taked is: a kind of control circuit of rear foglight of automobile, comprises fog tail lamp output unit, control unit, lampet input block, adverse-weather lamp input block, country beam input block and passing light input block;
1 pin of described control unit mouth connects rear fog lamp switch, and 2 pin of mouth are by the first capacity earth, and mouth 3,4 pin connects fog tail lamp output unit;
8 pin of control unit input end are by the second capacity earth, 7 pin of control unit input end connect adverse-weather lamp input block, country beam input block and passing light input block, 6 pin of control unit input end connect lampet input block, connect the first resistance between 8 pin of control unit and 2 pin;
Described adverse-weather lamp input block comprises the second diode, the positive pole termination adverse-weather lamp signal of the second diode, described country beam input block comprises the 3rd diode, the positive pole termination country beam signal of the 3rd diode, described passing light input block comprises the 4th diode, the positive terminal of the 4th diode close to light modulation signal, 7 pin of the common connection control unit of negative pole end of described second diode, the 3rd diode and the 4th diode;
Described lampet input block comprises PNP type triode and the first diode, the emitter of aerotron and the negative pole end of the first diode connect 3 pin of control unit simultaneously, the positive pole of the first diode connects little modulating signal, the collecting electrode of aerotron connects 6 pin of control unit, connects 4 pin of control unit after base series second resistance of aerotron;
Described fog tail lamp output unit comprises relay switch, and the two ends of the coil of relay switch connect 3 pin and 4 pin of control unit respectively, and a contact of relay switch connects the electrode input end of power supply, and another contact connects fog tail lamp mouth.
Its further technical scheme is: described control unit adopts IC module LD3505.
Described first diode, the second diode, the 3rd diode and the 4th diode all adopt 4007 types, and described first resistance value is 20K, and the second resistance value is 1K.
Owing to adopting technique scheme, a kind of control circuit of rear foglight of automobile of the utility model has following beneficial effect:
1. a kind of control circuit of rear foglight of automobile of the utility model, can meet 4.3.14.7 in GB4785-2007 completely and, to the regulation of fog tail lamp mode of operation, when only having country beam, passing light or adverse-weather lamp to open, could open fog tail lamp; Fog tail lamp can be closed independent of other any lamps; Fog tail lamp can continuous working, and fog tail lamp work by the impact of the open and close of any lamp, till position lamp is closed, should not be in closed condition, until again open afterwards always;
2. use a kind of control circuit of rear foglight of automobile of the utility model, can not because of different consumer switch time, cause voltage jump due to changed power, affect silicon control Q1 and activate conducting state and end, there is the error state that fog tail lamp cannot keep, more safe and reliable;
3. a kind of control circuit of rear foglight of automobile of the utility model improves on original circuit base, and circuit-line is simple, and easy to connect, cost is low, economical and practical.
Be further described below in conjunction with the technical characteristic of drawings and Examples to a kind of control circuit of rear foglight of automobile of the utility model.
Accompanying drawing explanation
Fig. 1: original controller for rear fog lamp circuit diagram;
Fig. 2: application number is utility model patent " a kind of controller for rear fog lamp of automobile " circuit diagram of 2014201695200;
Fig. 3: a kind of control circuit of rear foglight of automobile scheme circuit of the utility model;
In figure:
101-fog tail lamp output unit, 102-control unit, 104-adverse-weather lamp input block, 103-lampet input block, 105-country beam input block, 106-passing light input block, D1-the first diode, D2-the second diode, D3-the 3rd diode, D4-the 4th diode, R1-the first resistance, R2-the second resistance, C1-the first electric capacity, C2-the second electric capacity, K1-relay switch, Q1-aerotron.
Detailed description of the invention
Embodiment
A kind of control circuit of rear foglight of automobile, comprises fog tail lamp output unit 101, control unit 102, lampet input block 103, adverse-weather lamp input block 104, country beam input block 105 and passing light input block 106;
1 pin of described control unit mouth connects rear fog lamp switch, and 2 pin of mouth are by the first electric capacity C1 ground connection, and mouth 3,4 pin connects fog tail lamp output unit 101;
8 pin of control unit input end are by the second electric capacity C2 ground connection, 7 pin of control unit input end connect adverse-weather lamp input block, country beam input block and passing light input block, 6 pin of control unit input end connect lampet input block, meet the first resistance R1 between 8 pin of control unit and 2 pin;
Described adverse-weather lamp input block comprises the second diode D2, the positive pole termination adverse-weather lamp signal of the second diode, described country beam input block comprises the 3rd diode D3, the positive pole termination country beam signal of the 3rd diode, described passing light input block comprises the 4th diode D4, the positive terminal of the 4th diode close to light modulation signal, 7 pin of the common connection control unit 102 of negative pole end of described second diode D2, the 3rd diode D3 and the 4th diode D4;
Described lampet input block comprises PNP type triode Q1 and the first diode D1, the emitter of described aerotron and the negative pole end of the first diode connect 3 pin of control unit simultaneously, the positive pole of the first diode connects little modulating signal, the collecting electrode of aerotron connects 6 pin of control unit, connects 4 pin of control unit after the base series second resistance R2 of aerotron;
Described fog tail lamp output unit comprises relay switch K1, and the two ends of the coil of relay switch connect 3 pin and 4 pin of control unit respectively, and a contact of relay switch connects the electrode input end of power supply, and another contact connects fog tail lamp mouth.
Described control unit adopts IC module LD3505.
Described first diode D1, the second diode D2, the 3rd diode D3 and the 4th diode D4 all adopt 4007 types, and the first resistance R1 numerical value is 20K, and the second resistance R2 numerical value is 1K.
principle of work:
When headlight or adverse-weather lamp are opened, chip 7 pin (VC2) sets high level, now chip internal logical device is started working, opened by low level flip chip 1 pin (SW) fog tail lamp, chip 4 pin (RELAY) sets low level simultaneously, therefore aerotron Q1 conducting, thus make chip 6 pin (VC1) connect high level; Now headlight or adverse-weather lamp are closed, be still placed in high level because Q1 position aerotron is still in conducting state chip 6 pin (VC1), chip continues to keep mode of operation; Chip 4 pin (RELAY) makes relay coil conducting keep adhesive, and fog tail lamp is opened and kept until close lampet, and fog tail lamp extinguishes.
Former scheme (employing silicon control) is identical with the utility model scheme (employing aerotron) work-based logic, difference is that in real vehicle circuit, the change of fog tail lamp relay 7 pin lampet input voltage can cause the change of controlled silicon conducting state in former scheme, and in the utility model scheme, triode ON state can not therefore pin change of voltage and have the change of conducting state.
Verify that this circuit is in real vehicle environment through small lot, when each consumer switch cause changed power to cause voltage jump time, can not open hold mode to circuit and fog tail lamp have any impact.
Claims (3)
1. a control circuit of rear foglight of automobile, comprises fog tail lamp output unit (101), control unit (102), lampet input block (103), adverse-weather lamp input block (104), country beam input block (105) and passing light input block (106);
1 pin of described control unit mouth connects rear fog lamp switch, and 2 pin of mouth are by the first electric capacity (C1) ground connection, and mouth 3,4 pin connects fog tail lamp output unit (101);
8 pin of control unit input end are by the second electric capacity (C2) ground connection, 7 pin of control unit input end connect adverse-weather lamp input block, country beam input block and passing light input block, 6 pin of control unit input end connect lampet input block, connect the first resistance (R1) between 8 pin of control unit and 2 pin;
It is characterized in that:
Described adverse-weather lamp input block comprises the second diode (D2), the positive pole termination adverse-weather lamp signal of the second diode, country beam input block comprises the 3rd diode (D3), the positive pole termination country beam signal of the 3rd diode, described passing light input block comprises the 4th diode (D4), the positive terminal of the 4th diode close to light modulation signal, 7 pin of the common connection control unit of negative pole end (102) of described second diode (D2), the 3rd diode (D3) and the 4th diode (D4);
Described lampet input block comprises PNP type triode (Q1) and the first diode (D1), the emitter of aerotron and the negative pole end of the first diode connect 3 pin of control unit simultaneously, the positive pole of the first diode connects little modulating signal, the collecting electrode of aerotron connects 6 pin of control unit, connects 4 pin of control unit after base series second resistance (R2) of aerotron;
Described fog tail lamp output unit comprises relay switch (K1), and the two ends of the coil of relay switch connect 3 pin and 4 pin of control unit respectively, and a contact of relay switch connects the electrode input end of power supply, and another contact connects fog tail lamp mouth.
2. a kind of control circuit of rear foglight of automobile according to claim 1, is characterized in that: described control unit adopts IC module LD3505.
3. a kind of control circuit of rear foglight of automobile according to claim 1 and 2, it is characterized in that: described first diode (D1), the second diode (D2), the 3rd diode (D3) and the 4th diode (D4) all adopt 4007 types, described first resistance (R1) numerical value is 20K, and the second resistance (R2) numerical value is 1K.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520608639.8U CN204956266U (en) | 2015-08-13 | 2015-08-13 | Fog lamp control circuit behind car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520608639.8U CN204956266U (en) | 2015-08-13 | 2015-08-13 | Fog lamp control circuit behind car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204956266U true CN204956266U (en) | 2016-01-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520608639.8U Withdrawn - After Issue CN204956266U (en) | 2015-08-13 | 2015-08-13 | Fog lamp control circuit behind car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204956266U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105172671A (en) * | 2015-08-13 | 2015-12-23 | 柳州市美源科技股份有限公司 | Control circuit for automobile rear fog lamps |
-
2015
- 2015-08-13 CN CN201520608639.8U patent/CN204956266U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105172671A (en) * | 2015-08-13 | 2015-12-23 | 柳州市美源科技股份有限公司 | Control circuit for automobile rear fog lamps |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160113 Effective date of abandoning: 20170929 |