CN104464208A - Alarm of humidity detection integrated circuit - Google Patents
Alarm of humidity detection integrated circuit Download PDFInfo
- Publication number
- CN104464208A CN104464208A CN201310433673.1A CN201310433673A CN104464208A CN 104464208 A CN104464208 A CN 104464208A CN 201310433673 A CN201310433673 A CN 201310433673A CN 104464208 A CN104464208 A CN 104464208A
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- China
- Prior art keywords
- triode
- resistance
- electric capacity
- alarm
- integrated chip
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/20—Status alarms responsive to moisture
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Abstract
The invention discloses an alarm of a humidity detection integrated circuit. The alarm comprises a direct-current power supply, a switch, a loudspeaker, a first capacitor, a second capacitor, a third capacitor, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a potentiometer, a voice integrated chip, a diode, a first triode, a second triode, a third triode, a fourth triode and a moisture-sensitive sensor. The alarm of the humidity detection integrated circuit has the advantages that the circuit structure is simple, the number of adopted elements is small, the size is small, the cost is low, and manufacturing is easy; meanwhile, the action delay time of the alarm can be changed by regulating the resistance value of the potentiometer, and the tone of alarm voice can be changed by changing the resistance value of the third resistor.
Description
Technical field
The present invention relates to the parts that a kind of integrated circuit is relevant, particularly relate to a kind of alarm of Humidity Detection integrated circuit.
Background technology
The alarm of Humidity Detection integrated circuit of the prior art, circuit structure is complicated, employing element is many, bulky, cost of manufacture high and be not easy make, and the alarm of Humidity Detection integrated circuit of the prior art, the time delay of alarm and the tone of alarm voice can not be changed.
Summary of the invention
Object of the present invention is just the alarm providing a kind of Humidity Detection integrated circuit in order to solve the problem.
The present invention is achieved through the following technical solutions above-mentioned purpose:
The present invention includes direct supply, switch, loudspeaker, first electric capacity, second electric capacity, 3rd electric capacity, first resistance, second resistance, 3rd resistance, 4th resistance, 5th resistance, 6th resistance, potentiometer, voice integrated chip, diode, first triode, second triode, 3rd triode, 4th triode and moisture sensor, the positive pole of described direct supply is connected with the first end of described switch, the negative pole of described direct supply simultaneously with the first end of described first electric capacity, the emitter of described first triode, the first end of described second resistance, the power-of described voice integrated chip is extreme, the first end of described second electric capacity, the first end of described 3rd electric capacity, the emitter of described 3rd triode is connected with the emitter of described 4th triode, the second end of described switch simultaneously with the second end of described first electric capacity, the first end of described loudspeaker, the power positive end of described voice integrated chip, the first end of described 3rd resistance, the collector of described second triode, the sliding end of described potentiometer, the first end of described potentiometer, the first end of described 4th resistance is connected with the first end of described moisture sensor, the first end of described first resistance is connected with the base stage of described first triode, second end of described first resistance is connected with the signal output part of described voice integrated chip, second end of described second resistance is connected with the trigger end of described voice integrated chip and the emitter of described second triode simultaneously, second end of described 3rd resistance is connected with the signal input part of described voice integrated chip and the second end of described second electric capacity simultaneously, second end of described 4th resistance is connected with the base stage of described 3rd triode and the first end of described 5th resistance simultaneously, second end of described 5th resistance is connected with the collector of described 4th triode, the described first end of the 6th resistance is connected with the second end of described moisture sensor, second end of described 6th resistance is connected with the base stage of described 4th triode, the collector of described first triode is connected with the second end of described loudspeaker, the base stage of described second triode is connected with the negative pole of described diode, the collector of described 3rd triode simultaneously with the second end of described potentiometer, second end of described 3rd electric capacity is connected with the positive pole of described diode.
Particularly, described first electric capacity and described 3rd electric capacity all select withstand voltage to be greater than the aluminium electrolutic capacitor of 6V, and described second electric capacity selects high frequency ceramic capacitor; Described diode selects model to be the transwitch diode of 1N4148.
Beneficial effect of the present invention is:
The present invention is a kind of alarm of Humidity Detection integrated circuit, have circuit structure simple, adopt that element is few, volume is little, cost is low and the advantage such as easy making, the resistance value of regulator potentiometer simultaneously, the time delay of alarm action can be changed, change the resistance value of the 3rd resistance, the tone of alarm voice can be changed.
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 direct supply E, K switch, loudspeaker BL, first electric capacity C1, second electric capacity C2, 3rd electric capacity C3, first resistance R1, second resistance R2, 3rd resistance R3, 4th resistance R4, 5th resistance R5, 6th resistance R6, potentiometer RP, voice integrated chip IC, diode VD, first triode VT1, second triode VT2, 3rd triode VT3, 4th triode VT4 and moisture sensor SR, the positive pole of direct supply E is connected with the first end of K switch, the negative pole of direct supply E simultaneously with the first end of the first electric capacity C1, the emitter of the first triode VT1, the first end of the second resistance R2, the power-of voice integrated chip IC is extreme, the first end of the second electric capacity C2, the first end of the 3rd electric capacity C3, the emitter of the 3rd triode VT3 is connected with the emitter of the 4th triode VT4, the second end of K switch simultaneously with second end of the first electric capacity C1, the first end of loudspeaker BL, the power positive end of voice integrated chip IC, the first end of the 3rd resistance R3, the collector of the second triode VT2, the sliding end of potentiometer RP, the first end of potentiometer RP, the first end of the 4th resistance R4 is connected with the first end of moisture sensor SR, the first end of the first resistance R1 is connected with the base stage of the first triode VT1, second end of the first resistance R1 is connected with the signal output part of voice integrated chip IC, second end of the second resistance R2 is connected with the trigger end of voice integrated chip IC and the emitter of the second triode VT2 simultaneously, second end of the 3rd resistance R3 is connected with the signal input part of voice integrated chip IC and second end of the second electric capacity C2 simultaneously, second end of the 4th resistance R4 is connected with the base stage of the 3rd triode VT3 and the first end of the 5th resistance R5 simultaneously, second end of the 5th resistance R5 is connected with the collector of the 4th triode VT4, the first end of the 6th resistance R6 is connected with second end of moisture sensor SR, second end of the 6th resistance R6 is connected with the base stage of the 4th triode VT4, the collector of the first triode VT1 is connected with second end of loudspeaker BL, the base stage of the second triode VT2 is connected with the negative pole of diode VD, the collector of the 3rd triode VT3 simultaneously with second end of potentiometer RP, second end of the 3rd electric capacity C3 is connected with the positive pole of diode VD, first electric capacity C1 and the 3rd electric capacity C3 all selects withstand voltage to be greater than the aluminium electrolutic capacitor of 6V, second electric capacity C2 selects high frequency ceramic capacitor, and diode VD selects model to be the transwitch diode of 1N4148.
As shown in Figure 1: in the place of drying, the resistance value at moisture sensor SR two ends is almost infinity, 4th triode VT4 ends, 3rd triode VT3 conducting, diode VD and the second triode VT2 all ends, voice integrated chip IC does not work because trigger end is always low level, loudspeaker BL not sounding.Once local moist, moisture sensor SR two ends become low resistive state because of liquid conduction from high-impedance state, make the 4th triode VT4 positively biased conducting, 3rd triode VT3 ends, supply voltage charges to the 3rd electric capacity C3 through potentiometer RP, 1-2min after the 3rd electric capacity C3 charging terminates, diode VD and the second triode VT2 successive conductive, the high level that second triode VT2 emitter exports makes voice integrated chip IC be triggered and work, voice signal is exported from the signal output part of voice integrated chip IC, this signal is after the first triode VT1 amplifies, promote loudspeaker BL and send voice reminder sound.The resistance value of regulator potentiometer RP, can change the time delay of alarm action, changes the resistance value of the 3rd resistance R3, can change the tone of alarm voice.
Claims (3)
1. an alarm for Humidity Detection integrated circuit, is characterized in that: comprise direct supply, switch, loudspeaker, first electric capacity, second electric capacity, 3rd electric capacity, first resistance, second resistance, 3rd resistance, 4th resistance, 5th resistance, 6th resistance, potentiometer, voice integrated chip, diode, first triode, second triode, 3rd triode, 4th triode and moisture sensor, the positive pole of described direct supply is connected with the first end of described switch, the negative pole of described direct supply simultaneously with the first end of described first electric capacity, the emitter of described first triode, the first end of described second resistance, the power-of described voice integrated chip is extreme, the first end of described second electric capacity, the first end of described 3rd electric capacity, the emitter of described 3rd triode is connected with the emitter of described 4th triode, the second end of described switch simultaneously with the second end of described first electric capacity, the first end of described loudspeaker, the power positive end of described voice integrated chip, the first end of described 3rd resistance, the collector of described second triode, the sliding end of described potentiometer, the first end of described potentiometer, the first end of described 4th resistance is connected with the first end of described moisture sensor, the first end of described first resistance is connected with the base stage of described first triode, second end of described first resistance is connected with the signal output part of described voice integrated chip, second end of described second resistance is connected with the trigger end of described voice integrated chip and the emitter of described second triode simultaneously, second end of described 3rd resistance is connected with the signal input part of described voice integrated chip and the second end of described second electric capacity simultaneously, second end of described 4th resistance is connected with the base stage of described 3rd triode and the first end of described 5th resistance simultaneously, second end of described 5th resistance is connected with the collector of described 4th triode, the described first end of the 6th resistance is connected with the second end of described moisture sensor, second end of described 6th resistance is connected with the base stage of described 4th triode, the collector of described first triode is connected with the second end of described loudspeaker, the base stage of described second triode is connected with the negative pole of described diode, the collector of described 3rd triode simultaneously with the second end of described potentiometer, second end of described 3rd electric capacity is connected with the positive pole of described diode.
2. the alarm of Humidity Detection integrated circuit according to claim 1, is characterized in that: described first electric capacity and described 3rd electric capacity all select withstand voltage to be greater than the aluminium electrolutic capacitor of 6V, and described second electric capacity selects high frequency ceramic capacitor.
3. the alarm of Humidity Detection integrated circuit according to claim 1, is characterized in that: described diode selects model to be the transwitch diode of 1N4148.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310433673.1A CN104464208A (en) | 2013-09-23 | 2013-09-23 | Alarm of humidity detection integrated circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310433673.1A CN104464208A (en) | 2013-09-23 | 2013-09-23 | Alarm of humidity detection integrated circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104464208A true CN104464208A (en) | 2015-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310433673.1A Pending CN104464208A (en) | 2013-09-23 | 2013-09-23 | Alarm of humidity detection integrated circuit |
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| Country | Link |
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| CN (1) | CN104464208A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105866344A (en) * | 2016-05-13 | 2016-08-17 | 成都易思科科技有限公司 | Method for ambient humidity detection |
| CN110346014A (en) * | 2019-07-28 | 2019-10-18 | 北京交通大学 | A kind of city tunnel ponding warning device |
-
2013
- 2013-09-23 CN CN201310433673.1A patent/CN104464208A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105866344A (en) * | 2016-05-13 | 2016-08-17 | 成都易思科科技有限公司 | Method for ambient humidity detection |
| CN110346014A (en) * | 2019-07-28 | 2019-10-18 | 北京交通大学 | A kind of city tunnel ponding warning device |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150325 |
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| WD01 | Invention patent application deemed withdrawn after publication |