CN104634378A - Agricultural temperature and humidity alarm - Google Patents
Agricultural temperature and humidity alarm Download PDFInfo
- Publication number
- CN104634378A CN104634378A CN201310545711.2A CN201310545711A CN104634378A CN 104634378 A CN104634378 A CN 104634378A CN 201310545711 A CN201310545711 A CN 201310545711A CN 104634378 A CN104634378 A CN 104634378A
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- potentiometer
- integrated chip
- resistance
- diode
- humidity
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Abstract
The invention discloses an agricultural temperature and humidity alarm, which comprises a switch, a first resistor, a second resistor, a third resistor, a first diode, a second diode, a capacitor, a loudspeaker, a triode, a first potentiometer, a second potentiometer, a third potentiometer, a fourth potentiometer, a thermistor, a first humidity detection electrode, a second humidity detection electrode, a first integrated chip, a second integrated chip and a third integrated chip. The alarm disclosed by the invention is a temperature and humidity limit-exceeding alarm used in agriculture, sound and light alarm signals can be timely given out when temperature and humidity deviate from the set temperature, a farmer is reminded to pay attention to temperature and humidity in a greenhouse, the operation is simple, mounting is not complicated, and the product is worth popularizing.
Description
Technical field
The present invention relates to a kind of alarm, particularly relate to a kind of agricultural temperature humidity alarm.
Background technology
All need strict control in the temperature humidity of agriculturally many agricultural product, not so a lot of impacts and deviation can be caused, it is accurate not to there is monitoring in traditional monitoring instrument, need the shortcomings such as direct surveillance's instrument, while wasting a large amount of manpower, can not well temperature humidity be controlled in setting range.
Summary of the invention
Object of the present invention is just to provide a kind of agricultural temperature humidity alarm to solve the problem.
The present invention is achieved through the following technical solutions above-mentioned purpose:
The present invention includes switch, first resistance, second resistance, 3rd resistance, first diode, second diode, electric capacity, loudspeaker, triode, first potentiometer, second potentiometer, 3rd potentiometer, 4th potentiometer, thermistor, first Humidity Detection electrode, second Humidity Detection electrode, first integrated chip, second integrated chip and the 3rd integrated chip, the positive terminal of power supply is connected with the first end of described switch, the second end of described switch simultaneously with the first end of described electric capacity, the first end of described loudspeaker, the transmitting terminal of described triode, the first end of described first resistance, the first end of described 4th potentiometer, the first end of described second potentiometer is connected with the first end of described first potentiometer, second end of described first potentiometer simultaneously with the second end and the described first humidity detection Electrode connection of described second potentiometer, the sliding end of described first potentiometer is connected with the first pin of described second integrated chip, the sliding end of described second potentiometer is connected with the crus secunda of described second integrated chip, the 4th pin of described second integrated chip with simultaneously with the negative pole of described first diode, second end of described first resistance, second end of described second resistance connects, the positive terminal of described second diode is connected with the 4th pin of described 3rd integrated chip, the positive terminal of described first diode is connected with the tripod of described second integrated chip, described second resistance is connected with the base stage of described triode, the negative pole end of described second diode is connected with the tripod of described 3rd integrated circuit, second end of described 3rd potentiometer is connected with the first end of described thermistor simultaneously and the second end of described 4th potentiometer connects, with described second Humidity Detection electrode while of the crus secunda of described thermistor, first pin of described first integrated chip, second end of described electric capacity is connected with the negative pole end of described power supply and ground connection, the crus secunda of described first integrated chip is connected with the collector terminal of described triode, the described tripod of the first integrated chip is connected with the second end of described loudspeaker, and described 3rd resistance is in parallel with described first integrated chip.
Beneficial effect of the present invention is:
The present invention when temperature and humidity departs from design temperature, can send sound and light alarm signal in time, reminds the temperature in peasant's attentional manipulation canopy and humidity, simple to operate, and installing simple, is a product be worthy to be popularized.
Accompanying drawing explanation
Fig. 1 is circuit structure schematic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1: the present invention includes switch S, first resistance R1, second resistance R2, 3rd resistance R3, first diode D1, second diode D2, electric capacity C, loudspeaker Y, triode Q, first potentiometer RP1, second potentiometer RP2, 3rd potentiometer RP3, 4th potentiometer RP4, thermistor RT, first Humidity Detection electrode A, second Humidity Detection electrode B, first integrated chip IC1, second integrated chip IC2 and the 3rd integrated chip IC3, the positive terminal of power supply E is connected with the first end of switch S, the second end of switch S simultaneously with the first end of electric capacity C, the first end of loudspeaker Y, the transmitting terminal of triode Q, the first end of the first resistance R1, the first end of the 4th potentiometer RP4, the first end of the second potentiometer RP2 is connected with the first end of the first potentiometer RP1, second end of the first potentiometer RP1 is connected with second end of the second potentiometer RP2 and the first humidity detection electrode A simultaneously, the sliding end of the first potentiometer RP1 is connected with first pin of the second integrated chip IC2, the sliding end of the second potentiometer RP2 is connected with the crus secunda of the second integrated chip IC2, the 4th pin of the second integrated chip IC2 with simultaneously with the negative pole of the first diode D1, second end of the first resistance R1, second end of the second resistance R2 connects, the positive terminal of the second diode D2 is connected with the 4th pin of the 3rd integrated chip IC3, the positive terminal of the first diode D1 is connected with the tripod of the second integrated chip IC2, second resistance R2 is connected with the base stage of triode Q, the negative pole end of the second diode D2 is connected with the tripod of the 3rd integrated circuit (IC) 3, second end of the 3rd potentiometer RP3 is connected with the first end of thermistor RT simultaneously and second end of the 4th potentiometer RP4 connects, with the second Humidity Detection electrode B while of the crus secunda of thermistor RT, first pin of the first integrated chip IC1, second end of electric capacity C is connected with the negative pole end of power supply E and ground connection, the crus secunda of the first integrated chip IC1 is connected with the collector terminal of triode Q, the tripod of the first integrated chip IC1 is connected with second end of loudspeaker Y, 3rd resistance R3 is in parallel with the first integrated chip IC1, first potentiometer RP1 is used for setting humidity lower limit, second potentiometer RP2 is used for setting top limit of humidity value, 3rd potentiometer RP3 is used for design temperature lower limit, 4th potentiometer RP4 is used for design temperature higher limit, when soil moisture is in the humidity range set, second integrated chip IC2 exports high level, first diode D1 is in cut-off state, triode Q not conducting, the first integrated chip IC1 does not work, loudspeaker Y not sounding.When soil moisture exceedes the higher limit of setting humidity, resistance between Humidity Detection electrode A, B diminishes, make the midpoint potential of the second potentiometer RP2 lower than 2.7V, second integrated chip IC2 exports high level, first diode D1 is luminous, and instruction humidity is excessive, triode Q conducting simultaneously, first integrated chip IC1 energising work, sends chimes of doom.When the lower limit of soil moisture lower than setting humidity, resistance between Humidity Detection electrode A, B becomes large, and make the first potentiometer RP1 midpoint potential higher than 2.7V, the first diode IC2 output low level, the second diode D1 lights, and instruction humidity is less than normal; Triode Q conducting simultaneously, the first integrated chip IC1 energising work, loudspeaker Y sends chimes of doom.When temperature is in the temperature range set, the 3rd integrated chip IC3 all exports high level, and the second diode D2 is all in cut-off state, triode Q not conducting, and the first integrated chip IC1 does not work, loudspeaker Y not sounding.When temperature exceedes the higher limit of design temperature, the resistance of thermistor RT reduces, and makes the 4th potentiometer RP4 midpoint potential lower than 2.7V, and the 3rd integrated chip IC3 exports high level, and the second diode D2 lights, and indicated temperature is higher; Triode Q conducting simultaneously, first integrated chip IC1 is energized work, and loudspeaker Y sends chimes of doom, when the lower limit of temperature lower than design temperature, the resistance of thermistor RT increases, make the 3rd potentiometer RP3 midpoint potential higher than 2.7V, the 3rd integrated chip IC3 output low level, the second diode D2 lights, indicated temperature is higher, triode Q conducting simultaneously, the first integrated chip IC1 energising work, loudspeaker Y sends chimes of doom.
Claims (2)
1. an agricultural temperature humidity alarm, is characterized in that: comprise switch, first resistance, second resistance, 3rd resistance, first diode, second diode, electric capacity, loudspeaker, triode, first potentiometer, second potentiometer, 3rd potentiometer, 4th potentiometer, thermistor, first Humidity Detection electrode, second Humidity Detection electrode, first integrated chip, second integrated chip and the 3rd integrated chip, the positive terminal of power supply is connected with the first end of described switch, the second end of described switch simultaneously with the first end of described electric capacity, the first end of described loudspeaker, the transmitting terminal of described triode, the first end of described first resistance, the first end of described 4th potentiometer, the first end of described second potentiometer is connected with the first end of described first potentiometer, second end of described first potentiometer simultaneously with the second end and the described first humidity detection Electrode connection of described second potentiometer, the sliding end of described first potentiometer is connected with the first pin of described second integrated chip, the sliding end of described second potentiometer is connected with the crus secunda of described second integrated chip, the 4th pin of described second integrated chip with simultaneously with the negative pole of described first diode, second end of described first resistance, second end of described second resistance connects, the positive terminal of described second diode is connected with the 4th pin of described 3rd integrated chip, the positive terminal of described first diode is connected with the tripod of described second integrated chip, described second resistance is connected with the base stage of described triode, the negative pole end of described second diode is connected with the tripod of described 3rd integrated circuit, second end of described 3rd potentiometer is connected with the first end of described thermistor simultaneously and the second end of described 4th potentiometer connects, with described second Humidity Detection electrode while of the crus secunda of described thermistor, first pin of described first integrated chip, second end of described electric capacity is connected with the negative pole end of described power supply and ground connection, and the crus secunda of described first integrated chip is connected with the collector terminal of described triode, and the described tripod of the first integrated chip is connected with the second end of described loudspeaker.
2. the agricultural temperature humidity alarm of one according to claim 1, is characterized in that: described 3rd resistance is in parallel with described first integrated chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310545711.2A CN104634378A (en) | 2013-11-06 | 2013-11-06 | Agricultural temperature and humidity alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310545711.2A CN104634378A (en) | 2013-11-06 | 2013-11-06 | Agricultural temperature and humidity alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104634378A true CN104634378A (en) | 2015-05-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310545711.2A Pending CN104634378A (en) | 2013-11-06 | 2013-11-06 | Agricultural temperature and humidity alarm |
Country Status (1)
| Country | Link |
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| CN (1) | CN104634378A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106525124A (en) * | 2016-11-04 | 2017-03-22 | 无锡艾科瑞思产品设计与研究有限公司 | Grain mildew detection apparatus used for grain bin |
-
2013
- 2013-11-06 CN CN201310545711.2A patent/CN104634378A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106525124A (en) * | 2016-11-04 | 2017-03-22 | 无锡艾科瑞思产品设计与研究有限公司 | Grain mildew detection apparatus used for grain bin |
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Application publication date: 20150520 |