CN103529870A - Automatic demisting device - Google Patents
Automatic demisting device Download PDFInfo
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- CN103529870A CN103529870A CN201310521186.0A CN201310521186A CN103529870A CN 103529870 A CN103529870 A CN 103529870A CN 201310521186 A CN201310521186 A CN 201310521186A CN 103529870 A CN103529870 A CN 103529870A
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- resistance
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- operational amplifier
- triode
- variable resistor
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Abstract
The invention discloses an automatic demisting device. The automatic demisting device is characterized in that a moisture-sensitive sensor is connected with a variable resistor R1 in series, and then a non-common terminal of the moisture-sensitive sensor is connected with a power supply; a resistor R3 and a resistor R4 are connected in series; the two non-common terminals of the resistors R3 and R4 are respectively connected to another two non-common terminals of the moisture-sensitive sensor and the variable resistor R1; an in-phase input end of an operational amplifier is connected with a common terminal of the moisture-sensitive sensor and the variable resistor R1, while an inverter input end is connected with the common terminal of the resistor R3 and the resistor R4; a resistor R5 is connected between the in-phase input end and the output end of the operational amplifier; the output end of the operation amplifier is connected with a base electrode of a triode through a resistor R6; an emitting electrode of the triode is grounded, while a collector electrode is connected with a anode of a diode; a cathode of the diode is connected with the power supply; a resistor R7 is connected between the emitting electrode and the collector electrode of the triode. The automatic demisting device has the advantages that the circuit structure is simple, and the device can detect the moisture of a mirror surface and automatically demist.
Description
Technical field
The present invention relates to a kind of demister, relate in particular a kind of automatic defogging device.
Background technology
Urban economy is more and more flourishing, and the decoration of Discussion on architecture adopts the design of minute surface more and more.The occasion that bathroom, French window etc. are equipped with glass mirror gets more and more.But, in the winter time, when glass two sides exists temperature difference, on glassly will tie the vaporific water of crystallization of one deck, make mirror lose the effect of mirror, make glass lose perspectivity.Especially at the tower of view, when indoor temperature has a certain distance with outdoor temperature, its on glass will bearing water, hinders our view.
Summary of the invention
The invention provides a kind of automatic defogging device, its circuit structure is simple, utilizes moisture sensor to detect humidity and the principle of generating heat by controlling resistance heats to reach the object of demist to glass.
For solving above-mentioned technical matters, the present invention by the following technical solutions:
, it comprises moisture sensor, variable resistor R1, resistance R 3, resistance R 4 and operational amplifier, after described moisture sensor and variable resistor R1 are in series, the non-common port of moisture sensor is connected on power supply; After described resistance R 3 and resistance R 4 are in series, two non-common ports are connected on the two non-common ports of moisture sensor and variable resistor R1; The in-phase input end of described operational amplifier is connected on the common port of moisture sensor and variable resistor R1, and inverting input is connected on the common port of resistance R 3 and resistance R 4; Between the in-phase input end of described operational amplifier and output terminal, be connected with resistance R 5, the output terminal of described operational amplifier is connected in the base stage of triode by resistance R 6; The grounded emitter of described triode, collector is connected on the anode of diode; The negative electrode of described diode is connected with power supply; Between the emitter and collector of described triode, be connected with resistance R 7.
Further technical scheme is:
The in-phase input end of described operational amplifier is connected on the common port of moisture sensor and variable resistor R1 by resistance R 2.
Described triode is NPN type triode.
Described resistance R 3 and the resistance value ratio of resistance R 4 are 2:1.
Compared with prior art, the invention has the beneficial effects as follows:
1, the present invention utilizes moisture sensor to detect and reach one regularly when humidity humidity, and the mode of controlling resistance heating heats glass, to eliminate water of crystallization on minute surface, makes glass keep minute surface dry and comfortable.
2, circuit structure of the present invention is simple, is easy to realize.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 is circuit diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further illustrated.Embodiments of the present invention include but not limited to the following example.
[embodiment]
A kind of automatic defogging device as shown in Figure 1, it comprises moisture sensor, variable resistor R1, resistance R 3, resistance R 4 and operational amplifier, after described moisture sensor and variable resistor R1 are in series, the non-common port of moisture sensor is connected on power supply; After described resistance R 3 and resistance R 4 are in series, two non-common ports are connected on the two non-common ports of moisture sensor and variable resistor R1; The in-phase input end of described operational amplifier is connected on the common port of moisture sensor and variable resistor R1, and inverting input is connected on the common port of resistance R 3 and resistance R 4; Between the in-phase input end of described operational amplifier and output terminal, be connected with resistance R 5, the output terminal of described operational amplifier is connected in the base stage of triode by resistance R 6; The grounded emitter of described triode, collector is connected on the anode of diode; The negative electrode of described diode is connected with power supply; Between the emitter and collector of described triode, be connected with resistance R 7.
In circuit of the present invention, operational amplifier and resistance R 5 form hysteresis comparator circuit, moisture sensor is arranged on glass surface the humidity on glass surface is detected, variable resistor R1 regulates the detection sensitivity to humidity, resistance R 3 and resistance R 4 bleeder circuit in series, produces a reference voltage to operational amplifier.When moisture sensor monitors humidity on glass over certain value, output of generation of operational amplifier, make the base voltage of triode be greater than the voltage of collector, now, triode is in state of saturation, and on off state, resistance R 7 is started working, glass is heated, eliminate fog on glass.When the humidity of glass-mirror does not reach certain value, not conducting of diode, resistance R 7 is not worked.Whole circuit structure is simple, is easy to realize.
During for fear of detection sensitivity regulating humidity, avoid variable resistor R1 operational amplifier to be caused to damage at 0 o'clock, the in-phase input end of described operational amplifier is connected on the common port of moisture sensor and variable resistor R1 by resistance R 2.
Described triode is NPN type triode.
Resistance R 3 and resistance R 4 series connection produce reference voltage, and for the ease of regulating the detection sensitivity to humidity, described resistance R 3 and the resistance value ratio of resistance R 4 are 2:1.
Be as mentioned above embodiments of the invention.The present invention is not limited to above-mentioned embodiment, and anyone should learn the structural change of making under enlightenment of the present invention, and every have identical or close technical scheme with the present invention, within all falling into protection scope of the present invention.
Claims (4)
1. an automatic defogging device, is characterized in that: it comprises moisture sensor, variable resistor R1, resistance R 3, resistance R 4 and operational amplifier, and after described moisture sensor and variable resistor R1 are in series, the non-common port of moisture sensor is connected on power supply; After described resistance R 3 and resistance R 4 are in series, two non-common ports are connected on the two non-common ports of moisture sensor and variable resistor R1; The in-phase input end of described operational amplifier is connected on the common port of moisture sensor and variable resistor R1, and inverting input is connected on the common port of resistance R 3 and resistance R 4; Between the in-phase input end of described operational amplifier and output terminal, be connected with resistance R 5, the output terminal of described operational amplifier is connected in the base stage of triode by resistance R 6; The grounded emitter of described triode, collector is connected on the anode of diode; The negative electrode of described diode is connected with power supply; Between the emitter and collector of described triode, be connected with resistance R 7.
2. a kind of automatic defogging device according to claim 1, is characterized in that: the in-phase input end of described operational amplifier is connected on the common port of moisture sensor and variable resistor R1 by resistance R 2.
3. a kind of automatic defogging device according to claim 1 and 2, is characterized in that: described triode is NPN type triode.
4. a kind of automatic defogging device according to claim 1, is characterized in that: described resistance R 3 and the resistance value ratio of resistance R 4 are 2:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310521186.0A CN103529870B (en) | 2013-10-30 | 2013-10-30 | A kind of automatic defogging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310521186.0A CN103529870B (en) | 2013-10-30 | 2013-10-30 | A kind of automatic defogging device |
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| Publication Number | Publication Date |
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| CN103529870A true CN103529870A (en) | 2014-01-22 |
| CN103529870B CN103529870B (en) | 2015-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310521186.0A Active CN103529870B (en) | 2013-10-30 | 2013-10-30 | A kind of automatic defogging device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104083028A (en) * | 2014-06-26 | 2014-10-08 | 陈东卫 | Auto-defogging mirror |
| CN108225595A (en) * | 2017-12-28 | 2018-06-29 | 郑州天舜电子技术有限公司 | A kind of environment temperature difference detector |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86206588U (en) * | 1986-12-16 | 1987-09-12 | 上海市档案馆 | Automatic measuring, recording and controlling instrument for relative humidity |
| CN201331686Y (en) * | 2008-12-31 | 2009-10-21 | 韶关市泰宏医疗器械有限公司 | Intelligent incubator control circuit |
| US20120065795A1 (en) * | 2010-09-10 | 2012-03-15 | Blackshaw Andrew L | System and method for operating an economizer cycle of an air conditioner |
| CN202433793U (en) * | 2011-12-21 | 2012-09-12 | 成都众询科技有限公司 | Intelligent temperature and humidity control system |
| CN203149317U (en) * | 2013-03-28 | 2013-08-21 | 詹文法 | Simple smoke ventilator automatic switch circuit |
-
2013
- 2013-10-30 CN CN201310521186.0A patent/CN103529870B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86206588U (en) * | 1986-12-16 | 1987-09-12 | 上海市档案馆 | Automatic measuring, recording and controlling instrument for relative humidity |
| CN201331686Y (en) * | 2008-12-31 | 2009-10-21 | 韶关市泰宏医疗器械有限公司 | Intelligent incubator control circuit |
| US20120065795A1 (en) * | 2010-09-10 | 2012-03-15 | Blackshaw Andrew L | System and method for operating an economizer cycle of an air conditioner |
| CN202433793U (en) * | 2011-12-21 | 2012-09-12 | 成都众询科技有限公司 | Intelligent temperature and humidity control system |
| CN203149317U (en) * | 2013-03-28 | 2013-08-21 | 詹文法 | Simple smoke ventilator automatic switch circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104083028A (en) * | 2014-06-26 | 2014-10-08 | 陈东卫 | Auto-defogging mirror |
| CN108225595A (en) * | 2017-12-28 | 2018-06-29 | 郑州天舜电子技术有限公司 | A kind of environment temperature difference detector |
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| Publication number | Publication date |
|---|---|
| CN103529870B (en) | 2015-09-09 |
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Effective date of registration: 20180627 Address after: 610000 Rong Ou, 144 Qingbaijiang Road, Chengdu, Sichuan. Patentee after: Chengdu Zhi Rong Chuang Intellectual Property Operation Co., Ltd. Address before: 610000 20 Yongfeng Road, high tech Zone, Chengdu, Sichuan, 2 1. Patentee before: Chengdu Hongshan Technology Co., Ltd. |
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Effective date of registration: 20181207 Address after: 644000 Sichuan Yibin City, Xuzhou District, Baixi Town, North New District, Qinglong Street, No. 2, Building 11, No. 1 Patentee after: Yibin Fengchuan Power Technology Co., Ltd. Address before: 610000 Rong Ou, 144 Qingbaijiang Road, Chengdu, Sichuan. Patentee before: Chengdu Zhi Rong Chuang Intellectual Property Operation Co., Ltd. |
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