CN105231941A - Infrared light-operated hand drier - Google Patents
Infrared light-operated hand drier Download PDFInfo
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- CN105231941A CN105231941A CN201510692502.XA CN201510692502A CN105231941A CN 105231941 A CN105231941 A CN 105231941A CN 201510692502 A CN201510692502 A CN 201510692502A CN 105231941 A CN105231941 A CN 105231941A
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Abstract
The invention provides an infrared light-operated hand drier, which is characterized by comprising a 220V alternated current power supply, a 12V half-wave rectifying and voltage-stabilizing power supply, an infrared signal detection circuit, a light-operated signal conversion and mono-stability circuit, an electric heating and fan driving circuit and a working state indicating circuit, wherein a time-base circuit IC1 in the light-operated signal conversion and mono-stability circuit is NE555. On the basis of tests through a plurality of schemes, the requirements of the infrared light-operated hand drier on simple structure, reliable performance and low construction cost are achieved by using bidirectional controllable silicon as an electric heating and fan power driving element and under the assistance of a few of normal components.
Description
Technical field
The invention belongs to electronic auto-control technology field, relate to a kind of controlled by infrared light hand dryer.
Background technology
Hand dryer is that it is divided into induction type automatic hand dryer and manual hand dryer with oven dry both hands or the sanitary equipment electrical equipment drying up both hands between a kind of bathroom.It to be mainly used between hotel, restaurant, scientific research institution, hospital, place of public amusement or domestic hygiene etc.
The hand dryer market owning amount of hot type is maximum, usually its heating power is larger, many at more than 1500W, and power of motor is generally 200W, the typical feature of this hand dryer is that wind-warm syndrome is very high, and rely on the wind than higher temperature, the water-band on handle is walked, its advantage is that noise is little, therefore receives office building etc. and to need peace and quiet the favor in space.Through the test of kinds of schemes, the present invention uses bidirectional triode thyristor as the power drive element of electrical heating and blower fan, and is aided with a small amount of common components and parts and achieves the requirement that controlled by infrared light hand dryer circuit structure is simple, dependable performance, cost are low.
Below describe that controlled by infrared light hand dryer of the present invention is involved necessary in implementation process, guardian technique content in detail.
Summary of the invention
Goal of the invention and beneficial effect: the hand dryer market owning amount of hot type is maximum, usually its heating power is larger, many at more than 1500W, and power of motor is generally 200W, the typical feature of this hand dryer is that wind-warm syndrome is very high, and rely on the wind than higher temperature, the water-band on handle is walked, its advantage is that noise is little, therefore receives office building etc. and to need peace and quiet the favor in space.Through the test of kinds of schemes, the present invention uses bidirectional triode thyristor as the power drive element of electrical heating and blower fan, and is aided with a small amount of common components and parts and achieves the requirement that controlled by infrared light hand dryer circuit structure is simple, dependable performance, cost are low.
Circuit working principle: controlled by infrared light hand dryer by 220V AC power through decompression capacitor C1, bleeder resistance R1 step-down current limliting, through silicon rectifier diode D1 halfwave rectifier, Zener diode DW voltage stabilizing, and electric capacity C2 filtering obtains 12V stable DC voltage after filtering.
Controlled by infrared light hand dryer is that infrared light emission pipe D1 is faced the below that photosensitive receiving tube D2 is installed on hand dryer, when staff does not enter or leaves hand dryer, the infrared light direct irradiation that infraluminescence pipe D1 sends is on photosensitive receiving tube D2, at this moment photosensitive receiving tube D2 conducting makes its resistance very little, make the voltage on the 2nd pin of time base circuit IC1 and the 6th pin very low, the 3rd pin making time base circuit IC1 is low level, bidirectional triode thyristor BCR ends, electrical heating and fan drive circuit do not work without electricity, and red light emitting diodes LED does not work yet.
When staff enters hand dryer, the infrared light that infraluminescence pipe D1 sends is blocked by staff, the resistance of photosensitive receiving tube D2 is made to become very large, the 3rd pin current potential of time base circuit IC1 is made to change into high level by low level, bidirectional triode thyristor BCR is triggered conducting, make electrical heating and fan drive circuit energising work, the red light emitting diodes LED in working state indicating circuit is lit.
Technical scheme: controlled by infrared light hand dryer, it comprises 220V AC power, 12V halfwave rectifier voltage-stabilized power supply, infrared signal testing circuit, optically-controlled signal conversion and monostable circuit, electrical heating and fan drive circuit, working state indicating circuit, it is characterized in that:
Infrared signal testing circuit: it is made up of infrared light emission diode D3, resistance R5 and photodiode D2, resistance R4, trimmer potentiometer RP1 and trimmer potentiometer RP2, the positive pole of infrared light emission diode D3 is by resistance R5 connection circuit positive pole VCC, the negative pole connection circuit ground GND of infrared light emission diode D3, the positive pole of photodiode D2 connects one end of trimmer potentiometer RP1 by trimmer potentiometer RP2, one end of the other end connecting resistance R4 of trimmer potentiometer RP1, the negative pole connection circuit ground GND of the other end connection circuit positive pole VCC of resistance R4, photodiode D2;
The model that optically-controlled signal is changed and in monostable circuit, time base circuit IC1 selects is NE555,4th pin of time base circuit IC1 and the 8th pin connection circuit positive pole VCC, the 1st pin connection circuit ground GND of time base circuit IC1,6th pin of the activity termination time base circuit IC1 of trimmer potentiometer RP1,2nd pin of the activity termination time base circuit IC1 of trimmer potentiometer RP2, the 3rd pin of time base circuit IC1 connects working state indicating circuit and electrical heating and fan drive circuit;
Electrical heating and fan drive circuit: it is made up of trigger resistance R2, bidirectional triode thyristor BCR, electrical heating wire RL and blower fan, 3rd pin of time base circuit IC1 meets the control pole G of bidirectional triode thyristor BCR by trigger resistance R2, the first anode T1 of bidirectional triode thyristor BCR connects one end of electrical heating wire RL and one end of blower fan, the second plate T2 connection circuit ground GND of the live wire end L of the other end of electrical heating wire RL and another termination 220V AC power of blower fan, bidirectional triode thyristor BCR;
Working state indicating circuit: it is made up of red light emitting diodes LED and dropping resistor R3, the positive pole of red light emitting diodes LED connects the 3rd pin of time base circuit IC1, and the negative pole of red light emitting diodes LED is by dropping resistor R3 connection circuit ground GND;
12V halfwave rectifier voltage-stabilized power supply: it is by decompression capacitor C1, bleeder resistance R1, silicon rectifier diode D1, filter capacitor C2 and silicon voltage regulator diode DW forms, the technical parameter that silicon voltage regulator diode DW uses is 12V, the live wire end L of 220V AC power connects one end of decompression capacitor C1 and one end of bleeder resistance R1, the positive pole of the other end of decompression capacitor C1 and another termination silicon rectifier diode D1 of bleeder resistance R1, the negative pole of silicon rectifier diode D1 connects the negative pole of silicon voltage regulator diode DW and the positive pole of filter capacitor C2, the positive pole of silicon voltage regulator diode DW and the negative pole connection circuit ground GND of filter capacitor C2,
The positive pole of 12V halfwave rectifier voltage-stabilized power supply is connected with circuit anode VCC, and the negative pole of 12V halfwave rectifier voltage-stabilized power supply is connected with the zero line side N of circuit ground GND and 220V AC power.
Accompanying drawing explanation
Accompanying drawing 1 is the circuit working schematic diagram that the invention provides a controlled by infrared light hand dryer embodiment.
Detailed description of the invention
According to the controlled by infrared light hand dryer circuit working schematic diagram shown in accompanying drawing 1 and accompanying drawing explanation, and according to annexation between components and parts in each several part circuit described in summary of the invention, and components and parts technical parameter described in embodiment requires and circuit production main points are carried out enforcement and can be realized the present invention, is further described correlation technique of the present invention below in conjunction with embodiment.
The technical parameter of components and parts and selection requirement thereof
The model that infrared light emission diode D1 and photosensitive reception diode D2 adopts is respectively SE303 and PH302;
IC1 is time base circuit, and the model of employing is NE555;
BCR is bidirectional triode thyristor, and the technical parameter of use is 450V, 15A;
D1 is silicon rectifier diode, and the model selected is 1N4007;
DW Zener diode, the voltage stabilizing value selected is 12V, power is 1W;
LED is red light emitting diodes;
RP1, RP2 are trimmer potentiometer, and its resistance is 5.6K Ω, 12K Ω respectively;
R1 is bleeder resistance, and its resistance is 680K Ω, and power is 1W; The resistance of trigger resistance R2 is 15K Ω; The resistance of dropping resistor R3 is 910 Ω; The resistance of resistance R4 is 82K Ω; The resistance of resistance R5 is 820 Ω;
C1 is decompression capacitor, and capacity is 0.68 μ F/450V, C2 is filter capacitor, and capacity is 1000 μ F/25V;
RL is electrical heating wire, and the technical parameter of use is 220V, 1500W;
Blower fan uses series-wound motor and permanent magnet motor, and its technical parameter is 220V, 180W.
Circuit production main points, circuit debugging and using method
Because the circuit structure of controlled by infrared light hand dryer is fairly simple, comparison is easy, as long as the electronic devices and components performance generally selected is intact, and the components and parts annexation to specifications in accompanying drawing 1 is welded, physical connection line and welding quality are through carefully checking correctly, and circuit of the present invention only needs to carry out simple debugging and can normally work;
Adjustment of sensitivity: regulate trimmer potentiometer RP1 respectively and regulate trimmer potentiometer RP2, when staff does not enter or leaves hand dryer, the level that the 3rd pin of time base circuit IC1 exports can reliably overturn.
Circuit structure design of the present invention, components' placement; and its face shaping and size etc. thereof are not all key technologies of the present invention; neither application claims protection guardian technique content; because not affecting the realization of specific implementation process of the present invention and goal of the invention, therefore do not illustrate one by one in the description.
Claims (1)
1. a controlled by infrared light hand dryer, it comprises 220V AC power, 12V halfwave rectifier voltage-stabilized power supply, infrared signal testing circuit, optically-controlled signal conversion and monostable circuit, electrical heating and fan drive circuit, working state indicating circuit, it is characterized in that:
Described infrared signal testing circuit is made up of infrared light emission diode D3, resistance R5 and photodiode D2, resistance R4, trimmer potentiometer RP1 and trimmer potentiometer RP2, the positive pole of infrared light emission diode D3 is by resistance R5 connection circuit positive pole VCC, the negative pole connection circuit ground GND of infrared light emission diode D3, the positive pole of photodiode D2 connects one end of trimmer potentiometer RP1 by trimmer potentiometer RP2, one end of the other end connecting resistance R4 of trimmer potentiometer RP1, the negative pole connection circuit ground GND of the other end connection circuit positive pole VCC of resistance R4, photodiode D2;
The model that described optically-controlled signal is changed and in monostable circuit, time base circuit IC1 selects is NE555,4th pin of time base circuit IC1 and the 8th pin connection circuit positive pole VCC, the 1st pin connection circuit ground GND of time base circuit IC1,6th pin of the activity termination time base circuit IC1 of trimmer potentiometer RP1,2nd pin of the activity termination time base circuit IC1 of trimmer potentiometer RP2, the 3rd pin of time base circuit IC1 connects working state indicating circuit and electrical heating and fan drive circuit;
Described electrical heating and fan drive circuit are made up of trigger resistance R2, bidirectional triode thyristor BCR, electrical heating wire RL and blower fan, 3rd pin of time base circuit IC1 meets the control pole G of bidirectional triode thyristor BCR by trigger resistance R2, the first anode T1 of bidirectional triode thyristor BCR connects one end of electrical heating wire RL and one end of blower fan, the second plate T2 connection circuit ground GND of the live wire end L of the other end of electrical heating wire RL and another termination 220V AC power of blower fan, bidirectional triode thyristor BCR;
Described working state indicating circuit is made up of red light emitting diodes LED and dropping resistor R3, and the positive pole of red light emitting diodes LED connects the 3rd pin of time base circuit IC1, and the negative pole of red light emitting diodes LED is by dropping resistor R3 connection circuit ground GND;
Described 12V halfwave rectifier voltage-stabilized power supply is by decompression capacitor C1, bleeder resistance R1, silicon rectifier diode D1, filter capacitor C2 and silicon voltage regulator diode DW forms, the technical parameter that silicon voltage regulator diode DW uses is 12V, the live wire end L of 220V AC power connects one end of decompression capacitor C1 and one end of bleeder resistance R1, the positive pole of the other end of decompression capacitor C1 and another termination silicon rectifier diode D1 of bleeder resistance R1, the negative pole of silicon rectifier diode D1 connects the negative pole of silicon voltage regulator diode DW and the positive pole of filter capacitor C2, the positive pole of silicon voltage regulator diode DW and the negative pole connection circuit ground GND of filter capacitor C2,
The positive pole of described 12V halfwave rectifier voltage-stabilized power supply is connected with circuit anode VCC, and the negative pole of 12V halfwave rectifier voltage-stabilized power supply is connected with the zero line side N of circuit ground GND and 220V AC power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510692502.XA CN105231941A (en) | 2015-10-21 | 2015-10-21 | Infrared light-operated hand drier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510692502.XA CN105231941A (en) | 2015-10-21 | 2015-10-21 | Infrared light-operated hand drier |
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| Publication Number | Publication Date |
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| CN105231941A true CN105231941A (en) | 2016-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510692502.XA Pending CN105231941A (en) | 2015-10-21 | 2015-10-21 | Infrared light-operated hand drier |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106361209A (en) * | 2016-11-18 | 2017-02-01 | 广西大学 | Pyroelectric infrared automatic hand drier |
| CN106618343A (en) * | 2016-11-18 | 2017-05-10 | 广西大学 | Easy-to-control automatic hand dryer |
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| CN102734201A (en) * | 2012-07-16 | 2012-10-17 | 刘昭利 | Speed-regulation time-delay ventilation fan |
| CN102880202A (en) * | 2012-10-08 | 2013-01-16 | 洪珍 | Intermittent temperature controller for electric blanket |
| CN103759292A (en) * | 2014-02-23 | 2014-04-30 | 吴圣铎 | Electronic cigarette lighter with delay flameout function |
| CN103809629A (en) * | 2014-03-10 | 2014-05-21 | 吴圣铎 | Table top temperature controller for heat-preserving dining table |
| CN103829915A (en) * | 2014-03-20 | 2014-06-04 | 吴圣铎 | Electronic thermoregulator of shoe drying board |
| CN205094290U (en) * | 2015-10-21 | 2016-03-23 | 吴圣铎 | Light -operated hand drier of infrared ray |
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2015
- 2015-10-21 CN CN201510692502.XA patent/CN105231941A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102734201A (en) * | 2012-07-16 | 2012-10-17 | 刘昭利 | Speed-regulation time-delay ventilation fan |
| CN102880202A (en) * | 2012-10-08 | 2013-01-16 | 洪珍 | Intermittent temperature controller for electric blanket |
| CN103759292A (en) * | 2014-02-23 | 2014-04-30 | 吴圣铎 | Electronic cigarette lighter with delay flameout function |
| CN103809629A (en) * | 2014-03-10 | 2014-05-21 | 吴圣铎 | Table top temperature controller for heat-preserving dining table |
| CN103829915A (en) * | 2014-03-20 | 2014-06-04 | 吴圣铎 | Electronic thermoregulator of shoe drying board |
| CN205094290U (en) * | 2015-10-21 | 2016-03-23 | 吴圣铎 | Light -operated hand drier of infrared ray |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106361209A (en) * | 2016-11-18 | 2017-02-01 | 广西大学 | Pyroelectric infrared automatic hand drier |
| CN106618343A (en) * | 2016-11-18 | 2017-05-10 | 广西大学 | Easy-to-control automatic hand dryer |
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Application publication date: 20160113 |
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