CN203706371U - Infanette alarm circuit based on humidity sensor - Google Patents
Infanette alarm circuit based on humidity sensor Download PDFInfo
- Publication number
- CN203706371U CN203706371U CN201320875853.0U CN201320875853U CN203706371U CN 203706371 U CN203706371 U CN 203706371U CN 201320875853 U CN201320875853 U CN 201320875853U CN 203706371 U CN203706371 U CN 203706371U
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- humidity sensor
- resistance
- chips
- alarm
- infanette
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Abstract
The utility model discloses an infanette alarm circuit based on humidity sensor; the infanette alarm circuit comprises a signal sensing circuit, an amplifier, a comparator, and an alarm; voltage outputted by the signal sensing circuit is amplified by the amplifier and enters a first input end of the comparator; a second input end of the comparator is connected with 9V reference voltage, and an output end of the comparator is connected with the alarm comprising an LED lamp and a buzzer; the comparator and the amplifier all employs an operational amplifier; the signal sensing circuit comprises a humidity sensor and a 555 chip; a power supply positive end VCC passes in sequence a first resistor (R1), a second resistor (R2) and the humidity sensor and is grounded; the humidity sensor employs a HS1101 device; the infanette alarm circuit based on the humidity sensor is simple in circuit, timely in alarm, and easy to implement.
Description
Technical field
The utility model relates to a kind of infanette warning circuit based on humidity sensor.
Background technology
Current infanette mainly attracts consumer from moulding and color, the moulding of lovely fashion, bright-coloured color and luster and to have the infanette of cartoon character complete.This is all to strengthen attractive force from outward appearance, and some infanette also can offer convenience function, can fool more easily child to fall asleep such as hang cradle by increase.But seldom consider that baby easily wets the bed, and can not be in time in the situation that adult sleep soundly too at night urinated wet clothing and cause the catch a cold situation of flu of baby for baby changes bed clothes.Therefore, be necessary to design a kind of novel infanette warning circuit.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of infanette warning circuit based on being humidity sensor, and infanette warning circuit that should be based on being humidity sensor has that circuit is simple, the outstanding advantages timely and easy to implement of reporting to the police.
The technical solution of utility model is as follows:
Based on an infanette warning circuit that is humidity sensor, comprise signal sensing circuit, amplifier, comparer and alarm;
The voltage of signal sensing circuit output is amplified into the first input end of comparer through amplifier; The reference voltage of the second input termination 9V of comparer, the output terminal device taking alarm of comparer;
Described alarm comprises LED lamp and hummer;
Described comparer and amplifier all adopt operational amplifier;
Signal sensing circuit comprises humidity sensor and 555 chips; Power positive end VCC is successively through the first resistance (R1), the second resistance (R2) and humidity sensor ground connection;
RST end and the VCC end of 555 chips all meet power positive end VCC;
DIS termination first resistance (R1) of 555 chips and the tie point of the second resistance (R2);
The THR end of 555 chips and TRI end all connect the tie point of humidity sensor and the second resistance (R2);
The CON of 555 chips holds through the 3rd resistance (R10) ground connection;
The GND end ground connection of 555 chips;
The output terminal that the OUT end of 555 chips is signal sensing circuit;
The first resistance, the second resistance and the 3rd resistance are respectively 49.9k ohm, 576k ohm and 909k ohm;
Humidity sensor adopts HS1101 device.
Beneficial effect:
Infanette warning circuit based on being humidity sensor of the present utility model, starts light emitting diode and the luminous pronunciation of hummer of alarm by the humidity of humidity sensor HS1101 detection bed and mattress, circuit is simple, easy to implement.
The infanette warning circuit of humidity sensor of the present utility model is that infanette has increased humidity alarm function.By at night luminous and pronunciation pipe, remind sleep in baby father and mother or nurse change clothing and sheet for timely child, better protect baby's health.
Accompanying drawing explanation
Fig. 1 is the theory diagram of infanette warning circuit based on being humidity sensor;
Fig. 2 is the circuit theory diagrams of the infanette warning circuit based on humidity sensor.
Embodiment
Below with reference to the drawings and specific embodiments, the utility model is described in further details:
Embodiment 1:
As Fig. 1-2, a kind of infanette warning circuit based on humidity sensor, comprises signal sensing circuit, amplifier, comparer and alarm;
The voltage of signal sensing circuit output is amplified into the first input end of comparer through amplifier; The reference voltage of the second input termination 9V of comparer, the output terminal device taking alarm of comparer;
Described alarm comprises LED lamp and hummer;
Described comparer and amplifier all adopt operational amplifier;
Signal sensing circuit comprises humidity sensor and 555 chips; Power positive end VCC is successively through the first resistance (R1), the second resistance (R2) and humidity sensor ground connection;
RST end and the VCC end of 555 chips all meet power positive end VCC;
DIS termination first resistance (R1) of 555 chips and the tie point of the second resistance (R2);
The THR end of 555 chips and TRI end all connect the tie point of humidity sensor and the second resistance (R2);
The CON of 555 chips holds through the 3rd resistance (R10) ground connection;
The GND end ground connection of 555 chips;
The output terminal that the OUT end of 555 chips is signal sensing circuit;
The first resistance, the second resistance and the 3rd resistance are respectively 49.9k ohm, 576k ohm and 909k ohm;
Humidity sensor adopts HS1101 device.
Humidity sensor hs1101 responds to humidity, and the information humidity of responding on humidity sensor being reflected by 555 chips is changing into voltage signal output.
The size of humidity sensor hs1101 (humicap) induction humidity, the variation of humidity is reflected in the variation of electric capacity of humidity sensor hs1101, thereby converts physical signalling humidity to electric signal.
Humidity transform portion is the voltage signal output that the capacitance signal of the humidity sensor changing with humidity is changed into different frequency, and the concrete thought of this partial design is to be connected into multivibrator with 555 timers.
Pressure drop on light emitting diode is too large, connects voltage stabilizing diode at the output terminal of comparer, the volt value of restriction output voltage.
Claims (1)
1. the infanette warning circuit based on humidity sensor, is characterized in that, comprises signal sensing circuit, amplifier, comparer and alarm;
The voltage of signal sensing circuit output is amplified into the first input end of comparer through amplifier; The reference voltage of the second input termination 9V of comparer, the output terminal device taking alarm of comparer;
Described alarm comprises LED lamp and hummer;
Described comparer and amplifier all adopt operational amplifier;
Signal sensing circuit comprises humidity sensor and 555 chips; Power positive end VCC is successively through the first resistance the second resistance and humidity sensor ground connection;
RST end and the VCC end of 555 chips all meet power positive end VCC;
DIS termination first resistance of 555 chips and the tie point of the second resistance;
The THR end of 555 chips and TRI end all connect the tie point of humidity sensor and the second resistance;
The CON of 555 chips holds through the 3rd resistance eutral grounding;
The GND end ground connection of 555 chips;
The output terminal that the OUT end of 555 chips is signal sensing circuit;
The first resistance, the second resistance and the 3rd resistance are respectively 49.9k ohm, 576k ohm and 909k ohm;
Humidity sensor adopts HS1101 device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320875853.0U CN203706371U (en) | 2013-12-29 | 2013-12-29 | Infanette alarm circuit based on humidity sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320875853.0U CN203706371U (en) | 2013-12-29 | 2013-12-29 | Infanette alarm circuit based on humidity sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203706371U true CN203706371U (en) | 2014-07-09 |
Family
ID=51056776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320875853.0U Expired - Fee Related CN203706371U (en) | 2013-12-29 | 2013-12-29 | Infanette alarm circuit based on humidity sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203706371U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105279907A (en) * | 2014-07-26 | 2016-01-27 | 邹海龙 | Wireless humidity induction alarm |
| CN106073998A (en) * | 2016-07-04 | 2016-11-09 | 济南市儿童医院 | A kind of enuresis detection and alarm device |
-
2013
- 2013-12-29 CN CN201320875853.0U patent/CN203706371U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105279907A (en) * | 2014-07-26 | 2016-01-27 | 邹海龙 | Wireless humidity induction alarm |
| CN106073998A (en) * | 2016-07-04 | 2016-11-09 | 济南市儿童医院 | A kind of enuresis detection and alarm device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 Termination date: 20141229 |
|
| EXPY | Termination of patent right or utility model |