CN203819202U - Automatic dehumidification device for rear window glass of automobile - Google Patents
Automatic dehumidification device for rear window glass of automobile Download PDFInfo
- Publication number
- CN203819202U CN203819202U CN201420268671.1U CN201420268671U CN203819202U CN 203819202 U CN203819202 U CN 203819202U CN 201420268671 U CN201420268671 U CN 201420268671U CN 203819202 U CN203819202 U CN 203819202U
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- resistance
- connects
- fan
- window glass
- resistor
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Abstract
The utility model provides an automatic dehumidification device for the rear window glass of an automobile, belongs to the field of sensor control and aims to solve the problems of space occupation and high cost when a hot air fog removal device is adopted to remove frost on the rear window of the automobile. The automatic dehumidification device comprises a humidity sensor, a heating membrane, a fan and a control part, wherein the heating membrane is adhered to the inner surface of the rear automobile window glass; the humidity sensor is arranged on the rear automobile window glass; a hygristor Rl with a negative resistance humidity characteristic is adopted by the humidity sensor; the fan is arranged on the roof of an automobile shed and faces towards the upper half part of the rear automobile window glass; the control part comprises an NPN triode VT1, an NPN triode VT2, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a not gate D, an intermediate relay K1, an electrifying time-delay relay K2 and a turn-off thyristor VTH; when the humidity sensor detects that the rear automobile window frosts, the heating membrane is started to remove frost, and the fan is started to assist for dehumidification in a time delay manner.
Description
Technical field
The utility model relates to a kind of dehumidification system, belongs to sensor control field.
Background technology
Automobile is as a kind of walking-replacing tool, and its safety is especially aobvious important.When temperature is low, the inside and outside temperature difference of car can cause frosting on vehicle rear window, hinders the visual field of occupant, especially chaufeur, if do not remove in time, its consequence is hardly imaginable.General car is provided with hot blast fog-dispelling system, and this device and glass for vehicle window are separate, not only occupies space, and assembly cost is also large.
Summary of the invention
The utility model object is the frost that adopts hot blast fog-dispelling system to remove automobile vehicle rear window in order to solve, and the problem that existence takes up space, cost is high, provides a kind of automobile vehicle rear window glass automatic dehumidification system.
The automatic dehumidification system of automobile vehicle rear window glass described in the utility model, it comprises humidity sensor, heating film, fan and control part; Inside face at vehicle rear window glass posts heating film, and it is on glass that humidity sensor is arranged on vehicle rear window, and humidity sensor adopts the hygristor RL of negative resistance humidity characteristic to realize; Fan is arranged on bicycle shed top, and wafter is the first half of glass for vehicle window backward;
Described control part comprises NPN aerotron VT1, NPN aerotron VT2, resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, resistance R 7, not gate D, intermediate relay K1, energization delay relay K2 and turn-off thyristor VTH;
+ 6V power supply connects one end of energization delay relay K2 time delay open contact K2-1, one end of intermediate relay K1 open contact K1-1, one end of intermediate relay K1 coil, one end, one end of resistance R 6 and one end of resistance R 1 of resistance R 3 simultaneously;
The other end of energization delay relay K2 time delay open contact K2-1 connects a power supply terminal of fan;
The other end of intermediate relay K1 open contact K1-1 connects a power supply terminal of heating film;
The other end of intermediate relay K1 coil connects one end of energization delay relay K2 coil, and the other end of energization delay relay K2 coil connects the anode of turn-off thyristor VTH;
The other end of resistance R 1 connects one end, one end of resistance R 2 and the base stage of NPN aerotron VT1 of hygristor RL simultaneously; The other end of the collecting electrode while contact resistance R3 of NPN aerotron VT1 and one end of resistance R 4; The other end of resistance R 4 connects one end of base stage and the resistance R 5 of NPN aerotron VT2 simultaneously; The emitter of NPN aerotron VT1 connects the emitter of NPN aerotron VT2 and one end of resistance R 7 simultaneously, the other end of the collecting electrode while contact resistance R6 of NPN aerotron VT2 and the input end of not gate D, the mouth of not gate D connects the control utmost point of turn-off thyristor VTH;
Another power supply terminal of the negative electrode of the other end of the other end of hygristor RL, the other end of resistance R 2, resistance R 5, the other end of resistance R 7, turn-off thyristor VTH, another power supply terminal of heating film and fan ground connection simultaneously.
Advantage of the present utility model: the automatic dehumidification system of automobile vehicle rear window glass described in the utility model is simple in structure, employing humidity sensor detects the humidity of vehicle rear window, removes in time frost or the steam of automobile vehicle rear window; The utility model adopts cheap analog device to build, and do not take up space, and overall cost is very low.
Brief description of the drawings
Fig. 1 is the physical circuit figure of the automatic dehumidification system of automobile vehicle rear window glass described in the utility model.
Detailed description of the invention
Detailed description of the invention one: below in conjunction with Fig. 1, present embodiment is described, the automatic dehumidification system of automobile vehicle rear window glass described in present embodiment, it comprises humidity sensor, heating film, fan and control part; Inside face at vehicle rear window glass posts heating film, and it is on glass that humidity sensor is arranged on vehicle rear window, and humidity sensor adopts the hygristor RL of negative resistance humidity characteristic to realize; Fan is arranged on bicycle shed top, and wafter is the first half of glass for vehicle window backward;
Described control part comprises NPN aerotron VT1, NPN aerotron VT2, resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, resistance R 7, not gate D, intermediate relay K1, energization delay relay K2 and turn-off thyristor VTH;
+ 6V power supply connects one end of energization delay relay K2 time delay open contact K2-1, one end of intermediate relay K1 open contact K1-1, one end of intermediate relay K1 coil, one end, one end of resistance R 6 and one end of resistance R 1 of resistance R 3 simultaneously;
The other end of energization delay relay K2 time delay open contact K2-1 connects a power supply terminal of fan;
The other end of intermediate relay K1 open contact K1-1 connects a power supply terminal of heating film;
The other end of intermediate relay K1 coil connects one end of energization delay relay K2 coil, and the other end of energization delay relay K2 coil connects the anode of turn-off thyristor VTH;
The other end of resistance R 1 connects one end, one end of resistance R 2 and the base stage of NPN aerotron VT1 of hygristor RL simultaneously; The other end of the collecting electrode while contact resistance R3 of NPN aerotron VT1 and one end of resistance R 4; The other end of resistance R 4 connects one end of base stage and the resistance R 5 of NPN aerotron VT2 simultaneously; The emitter of NPN aerotron VT1 connects the emitter of NPN aerotron VT2 and one end of resistance R 7 simultaneously, the other end of the collecting electrode while contact resistance R6 of NPN aerotron VT2 and the input end of not gate D, the mouth of not gate D connects the control utmost point of turn-off thyristor VTH;
Another power supply terminal of the negative electrode of the other end of the other end of hygristor RL, the other end of resistance R 2, resistance R 5, the other end of resistance R 7, turn-off thyristor VTH, another power supply terminal of heating film and fan ground connection simultaneously.
The principle of work of energization delay relay: energization delay relay has time delay open contact, time delay normally closed contact; Coil obtains electric, its time delay open contact time closing, and its time delay normally closed contact time delay disconnects; When coil losing electricity, its time delay open contact instantaneous recovery off-state, its time delay normally closed contact instantaneous recovery normally off.
Principle of work:
Resistance R 3, resistance R 4, resistance R 5, resistance R 6, resistance R 7, NPN aerotron VT1 and NPN aerotron VT2 form Schmidt trigger, the control utmost point of the output termination turn-off thyristor VTH of Schmidt trigger, when Schmidt trigger output high level, turn-off thyristor VTH conducting, K1 and K2 obtain electric; When Schmidt trigger output low level, turn-off thyristor VTH cut-off, K1 and K2 dead electricity.
What the hygristor RL of present embodiment adopted is the hygristor of negative resistance humidity characteristic, and its resistance reduces with the increase of humidity.In the time that car back window glass humidity is normal, the resistance of RL is very large, and the voltage that A is ordered is higher than the base stage conducting required voltage of VT1, Schmidt trigger is output as high level, and this high level is low level by not gate D upset, and the control utmost point of VTH does not have trigger voltage, K1 and K2 must not be electric, are failure to actuate.
When car internal-external temperature difference becomes large, the frosting of car back window glass, the resistance of humidity sensor RL diminishes thereupon, be less than after 0.7V to A point voltage when little, VT1 cut-off, Schmidt trigger is output as low level, this low level is high level by not gate D upset, the trigger voltage of providing to the control utmost point of VTH, VTH conducting, K1 and K2 obtain electric, and K1-1 is closed immediately, and heating film starts heating, frost on glass is molten into the globule, K2-1 time closing, fan work, the auxiliary globule, the better effects if of dehumidifying of drying up.
Detailed description of the invention two: present embodiment is described further embodiment one, the quantity of fan is one or more.If multiple, fan arranges a row on bicycle shed top, all towards vehicle rear window glass.
Claims (2)
1. the automatic dehumidification system of automobile vehicle rear window glass, is characterized in that, it comprises humidity sensor, heating film, fan and control part; Inside face at vehicle rear window glass posts heating film, and it is on glass that humidity sensor is arranged on vehicle rear window, and humidity sensor adopts the hygristor RL of negative resistance humidity characteristic to realize; Fan is arranged on bicycle shed top, and wafter is the first half of glass for vehicle window backward;
Described control part comprises NPN aerotron VT1, NPN aerotron VT2, resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, resistance R 7, not gate D, intermediate relay K1, energization delay relay K2 and turn-off thyristor VTH;
+ 6V power supply connects one end of energization delay relay K2 time delay open contact K2-1, one end of intermediate relay K1 open contact K1-1, one end of intermediate relay K1 coil, one end, one end of resistance R 6 and one end of resistance R 1 of resistance R 3 simultaneously;
The other end of energization delay relay K2 time delay open contact K2-1 connects a power supply terminal of fan;
The other end of intermediate relay K1 open contact K1-1 connects a power supply terminal of heating film;
The other end of intermediate relay K1 coil connects one end of energization delay relay K2 coil, and the other end of energization delay relay K2 coil connects the anode of turn-off thyristor VTH;
The other end of resistance R 1 connects one end, one end of resistance R 2 and the base stage of NPN aerotron VT1 of hygristor RL simultaneously; The other end of the collecting electrode while contact resistance R3 of NPN aerotron VT1 and one end of resistance R 4; The other end of resistance R 4 connects one end of base stage and the resistance R 5 of NPN aerotron VT2 simultaneously; The emitter of NPN aerotron VT1 connects the emitter of NPN aerotron VT2 and one end of resistance R 7 simultaneously, the other end of the collecting electrode while contact resistance R6 of NPN aerotron VT2 and the input end of not gate D, the mouth of not gate D connects the control utmost point of turn-off thyristor VTH;
Another power supply terminal of the negative electrode of the other end of the other end of hygristor RL, the other end of resistance R 2, resistance R 5, the other end of resistance R 7, turn-off thyristor VTH, another power supply terminal of heating film and fan ground connection simultaneously.
2. the automatic dehumidification system of automobile vehicle rear window glass according to claim 1, is characterized in that, the quantity of fan is one or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420268671.1U CN203819202U (en) | 2014-05-23 | 2014-05-23 | Automatic dehumidification device for rear window glass of automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420268671.1U CN203819202U (en) | 2014-05-23 | 2014-05-23 | Automatic dehumidification device for rear window glass of automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203819202U true CN203819202U (en) | 2014-09-10 |
Family
ID=51474730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420268671.1U Expired - Fee Related CN203819202U (en) | 2014-05-23 | 2014-05-23 | Automatic dehumidification device for rear window glass of automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203819202U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104890628A (en) * | 2015-05-27 | 2015-09-09 | 合肥卓元科技服务有限公司 | Automatic dehumidification system |
-
2014
- 2014-05-23 CN CN201420268671.1U patent/CN203819202U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104890628A (en) * | 2015-05-27 | 2015-09-09 | 合肥卓元科技服务有限公司 | Automatic dehumidification system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140910 Termination date: 20150523 |
|
| EXPY | Termination of patent right or utility model |