CN104297302A - Acousto-optic warning device for humidity detection - Google Patents
Acousto-optic warning device for humidity detection Download PDFInfo
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- CN104297302A CN104297302A CN201410610482.2A CN201410610482A CN104297302A CN 104297302 A CN104297302 A CN 104297302A CN 201410610482 A CN201410610482 A CN 201410610482A CN 104297302 A CN104297302 A CN 104297302A
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Abstract
The invention provides an acousto-optic warning device for humidity detection. The acousto-optic warning device is characterized by comprising a 3V DC (Direct Current) power supply, a humidity detection sampling circuit, a humidity signal amplifying circuit and a humidity status acousto-optic warning circuit, wherein the humidity detection sampling circuit is composed of a humidity-sensitive sensor SM and a linear potentiometer RP1; the humidity signal amplifying circuit is composed of an operational amplifier IC1, a resistor R1 and a resistor R2; the model of the operational amplifier IC1 is LM324; a humidity status displaying circuit is composed of a linear potentiometer RP2, an electrolytic capacitor C1, an NPN type transistor VT1, a red light emitting diode LED, a resistor R3 and a buzzer HA. According to the acousto-optic warning device for humidity detection, the humidity-sensitive sensor is used for sampling a humidity signal; the humidity signal is compared by the operational amplifier and then is amplified; finally, the light emitting diode and the buzzer indicates the humidity status. The acousto-optic warning device for humidity detection can also be used as a warehouse humidity alarm to provide a warning signal for opening a dehumidifier or windowing for ventilation and dehumidification.
Description
Technical field
The invention belongs to application of electronic technology field, relate to a kind of Humidity Detection sound-light reminding device.
Background technology
For improving early farmland spring environment temperature, rural area common plastics film is barricaded as simple and easy hot house on the ground to cultivate crop seedling.The raise an infant shortcoming of seedling of this hot house is stuffy in booth, airtight, and the humidity problems of too in hot house occurs often, thus affects the normal growth of crop seedling, and easily grows seedling early disease.Of the present invention is a Humidity Detection sound-light reminding device, it is sampled by moisture sensor, moisture signal is compared by operational amplifier, and then pass through signal amplification circuit, remind moisture condition finally by light emitting diode and hummer, instruct peasant household to take the measure of ventilation wet down in time.The present invention also can be used as the humidity alarm in warehouse, for opening dehumidifier or ventilation drying of windowing provides signal.
Below describe the guardian technique content that Humidity Detection sound-light reminding device of the present invention is involved in manufacturing process in detail.
Summary of the invention
Goal of the invention and beneficial effect: for improving environment temperature in early spring, rural area common plastics film is barricaded as simple and easy hot house on the ground to cultivate crop seedling.The raise an infant shortcoming of seedling of this hot house is stuffy in booth, airtight, and the humidity problems of too in hot house occurs often, thus affects the normal growth of crop seedling, and easily grows seedling early disease.Of the present invention is a Humidity Detection sound-light reminding device, it is sampled by moisture sensor, moisture signal is compared by operational amplifier, and then pass through signal amplification circuit, remind moisture condition finally by light emitting diode and hummer, instruct peasant household to take the measure of ventilation wet down in time.The present invention also can be used as the humidity alarm in warehouse, for opening dehumidifier or ventilation drying of windowing provides signal.
Circuit working principle: the operational amplifier IC1 (LM324) in Humidity Detection sound-light reminding device is connected into single supply working method, resistance R1 and moisture sensor RSM forms Humidity Detection sample circuit, the 3rd pin that humidity is converted to electric signal feeding operational amplifier IC1 by moisture sensor RSM carries out homophase amplification, the level that signal after amplification is exported by the 1st pin of operational amplifier IC1 is sent into NPN transistor VT1 by potentiometer RP and is carried out power amplification, then drive hummer HA to sound a buzzer, LED lights instruction simultaneously.3V direct supply is provided by 2 joints No. 5 batteries.
Accompanying drawing explanation
Accompanying drawing 1 is the embodiment circuit working schematic diagram of Humidity Detection sound-light reminding device; In accompanying drawing 1, the negative pole of 3V direct supply is connected with circuit ground GND; Accompanying drawing 2 is moisture sensor RSM schematic diagram.
Embodiment
According to the Humidity Detection sound-light reminding device 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.
Technical scheme: Humidity Detection sound-light reminding device, it comprises 3V direct supply, Humidity Detection sample circuit, moisture signal amplifying circuit, moisture condition acoustic-optic reminding circuit, it is characterized in that:
Humidity Detection sample circuit: it is made up of moisture sensor RSM and linear potentiometer RP1, operational amplifier IC1 the 3rd pin connects moisture sensor RSM mono-pin and linear potentiometer RP1 one end, another pin connection circuit positive pole of moisture sensor RSM VCC, the linear potentiometer RP1 other end and movable end connection circuit ground GND thereof;
Moisture signal amplifying circuit: it is made up of operational amplifier IC1, resistance R1, resistance R2, the model that operational amplifier IC1 selects is LM324, the 4th pin connection circuit positive pole VCC of operational amplifier IC1, operational amplifier IC1 the 2nd pin connecting resistance R1 one end and resistance R2 one end, resistance R1 other end connection circuit ground GND, another termination operational amplifier of resistance R2 IC1 the 1st pin, operational amplifier IC1 the 11st pin connection circuit ground GND;
Moisture condition display circuit: it is by linear potentiometer RP2, electrochemical capacitor C1, NPN transistor VT1, red light emitting diodes LED and resistance R3 and hummer HA forms, operational amplifier IC1 the 1st pin connects linear potentiometer RP2 one end, the linear potentiometer RP2 other end and activity termination electrochemical capacitor C1 positive pole thereof and NPN transistor VT1 base stage, NPN transistor VT1 collector connects the negative pole of red light emitting diodes LED negative pole and hummer HA, red light emitting diodes LED positive pole connecting resistance R3 one end, the positive pole connection circuit positive pole VCC of the resistance R3 other end and hummer HA, electrochemical capacitor C1 negative pole and NPN transistor VT1 emitter connection circuit ground GND,
3V DC power anode connection circuit positive pole VCC, 3V DC power cathode is connected with circuit ground GND.
The technical parameter of components and parts and selection requirement
IC1 is operational amplifier, and the model selected is LM324, and packing forms is 14 pin dual-in-line plastic packagings; Its internal circuit comprises four groups of identical operational amplifiers of form, and except power sharing, four groups of operational amplifiers are separate, and the present embodiment has only used a group wherein;
VT1 is NPN transistor, and the model selected is 2SC9013, requires enlargement factor β >=180;
LED is red light emitting diodes, selects diameter ￠ 5mm red light emitting diodes;
Resistance R1 ~ R3 selects 1/4W metalfilmresistor, and the resistance of resistance R1 ~ R3 is 5.1K Ω, 5.1M Ω, 430 Ω respectively;
RP1 is linear potentiometer, and its resistance is 15K Ω; RP2 is linear potentiometer, and its resistance is 10K Ω;
C1 is electrochemical capacitor, and its capacity is 22 μ F/16V;
HA is hummer, selects hummer to be built-in with audio generating circuit, and operating voltage is 3V.
Circuit production main points and circuit debugging
The making of moisture sensor RSM: preferred dimension is 46mm × 35mm epoxy resin one side copper foil plate one piece, carves 9 interdigitations according to the shown hacksaw blade of accompanying drawing 2, is connected to two pins of moisture sensor RSM respectively with strand copper wire;
When circuit debugging, use 500 type pointer multimeters, black meter pen two test pencil of multimeter is connected on moisture sensor RSM two pins respectively, breathes out hot gas with mouth on moisture sensor SM, and the direction deflection that at this moment 500 type multimeter pointers should be rapidly to resistance value little is moved; When after the aqueous vapor evaporation on moisture sensor RSM, multimeter indicator gets back to initial position again gradually, and moisture sensor RSM performance is normal;
The resistance of linear adjustment potentiometer RP1, can set the early warning humidity value of needs; The resistance of linear adjustment potentiometer RP2, can adjust the brightness of red light emitting diodes LED and the volume of hummer HA;
Moisture sensor RSM in Humidity Detection sound-light reminding device should be placed on the representational position of tested indoor (or region) most;
The outward appearance of circuit components layout of the present invention, board design, supply socket and size etc. are not gordian techniquies of the present invention, neither the technology contents of application claims protection, therefore illustrate no longer one by one in the description.
Claims (1)
1. a Humidity Detection sound-light reminding device, it comprises 3V direct supply, Humidity Detection sample circuit, moisture signal amplifying circuit, moisture condition acoustic-optic reminding circuit, it is characterized in that:
Described Humidity Detection sample circuit is made up of moisture sensor RSM and linear potentiometer RP1, operational amplifier IC1 the 3rd pin connects moisture sensor RSM mono-pin and linear potentiometer RP1 one end, another pin connection circuit positive pole of moisture sensor RSM VCC, the linear potentiometer RP1 other end and movable end connection circuit ground GND thereof;
Described moisture signal amplifying circuit is made up of operational amplifier IC1, resistance R1, resistance R2, the model that operational amplifier IC1 selects is LM324, the 4th pin connection circuit positive pole VCC of operational amplifier IC1, operational amplifier IC1 the 2nd pin connecting resistance R1 one end and resistance R2 one end, resistance R1 other end connection circuit ground GND, another termination operational amplifier of resistance R2 IC1 the 1st pin, operational amplifier IC1 the 11st pin connection circuit ground GND;
Described moisture condition display circuit is by linear potentiometer RP2, electrochemical capacitor C1, NPN transistor VT1, red light emitting diodes LED and resistance R3 and hummer HA forms, operational amplifier IC1 the 1st pin connects linear potentiometer RP2 one end, the linear potentiometer RP2 other end and activity termination electrochemical capacitor C1 positive pole thereof and NPN transistor VT1 base stage, NPN transistor VT1 collector connects the negative pole of red light emitting diodes LED negative pole and hummer HA, red light emitting diodes LED positive pole connecting resistance R3 one end, the positive pole connection circuit positive pole VCC of the resistance R3 other end and hummer HA, electrochemical capacitor C1 negative pole and NPN transistor VT1 emitter connection circuit ground GND,
Described 3V DC power anode connection circuit positive pole VCC, 3V DC power cathode is connected with circuit ground GND.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410610482.2A CN104297302A (en) | 2014-11-02 | 2014-11-02 | Acousto-optic warning device for humidity detection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410610482.2A CN104297302A (en) | 2014-11-02 | 2014-11-02 | Acousto-optic warning device for humidity detection |
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| CN104297302A true CN104297302A (en) | 2015-01-21 |
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| CN201410610482.2A Pending CN104297302A (en) | 2014-11-02 | 2014-11-02 | Acousto-optic warning device for humidity detection |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105185055A (en) * | 2015-09-01 | 2015-12-23 | 芜湖瑞泰精密机械有限公司 | Agricultural planting soil condition monitoring device |
| CN105781198A (en) * | 2016-04-26 | 2016-07-20 | 周玉林 | Acousto-optical reminding device for enabling vehicles to safely pass in and out of underground garage |
Citations (5)
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|---|---|---|---|---|
| CN2183565Y (en) * | 1993-12-30 | 1994-11-23 | 周骁威 | Moisture sensitive electronic switch |
| KR100489813B1 (en) * | 2004-07-29 | 2005-05-17 | (주)동명엔터프라이즈 | Apparatus for sensing of water contents in oil flows |
| CN201107292Y (en) * | 2007-11-15 | 2008-08-27 | 高子泉 | Humidity detection alarming device |
| CN103759336A (en) * | 2014-01-24 | 2014-04-30 | 青岛格兰德新能源有限公司 | Full-automatic air circulating, purifying, washing and incensing system |
| CN204101497U (en) * | 2014-11-02 | 2015-01-14 | 黄宇嵩 | Humidity Detection sound-light reminding device |
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2014
- 2014-11-02 CN CN201410610482.2A patent/CN104297302A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2183565Y (en) * | 1993-12-30 | 1994-11-23 | 周骁威 | Moisture sensitive electronic switch |
| KR100489813B1 (en) * | 2004-07-29 | 2005-05-17 | (주)동명엔터프라이즈 | Apparatus for sensing of water contents in oil flows |
| CN201107292Y (en) * | 2007-11-15 | 2008-08-27 | 高子泉 | Humidity detection alarming device |
| CN103759336A (en) * | 2014-01-24 | 2014-04-30 | 青岛格兰德新能源有限公司 | Full-automatic air circulating, purifying, washing and incensing system |
| CN204101497U (en) * | 2014-11-02 | 2015-01-14 | 黄宇嵩 | Humidity Detection sound-light reminding device |
Non-Patent Citations (4)
| Title |
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| J. ARTIGAS ET AL.: "Application of ion sensitive field effect transistor based sensors to soil analysis", 《COMPUTERS AND ELECTRONICS IN AGRICULTURE》 * |
| J. ARTIGAS ET AL.: "Application of ion sensitive field effect transistor based sensors to soil analysis", 《COMPUTERS AND ELECTRONICS IN AGRICULTURE》, vol. 31, no. 2, 31 December 2001 (2001-12-31) * |
| N.G. PATEL ET AL.: "Fabrication of carbon dioxide gas sensor and its alarm system using indium tin oxide (ITO) thin films", 《SENSORS AND ACTUATORS B 》, vol. 21, 31 December 1994 (1994-12-31) * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105185055A (en) * | 2015-09-01 | 2015-12-23 | 芜湖瑞泰精密机械有限公司 | Agricultural planting soil condition monitoring device |
| CN105781198A (en) * | 2016-04-26 | 2016-07-20 | 周玉林 | Acousto-optical reminding device for enabling vehicles to safely pass in and out of underground garage |
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