CN204348040U - The wet testing circuit of a kind of baby' diaper urine - Google Patents
The wet testing circuit of a kind of baby' diaper urine Download PDFInfo
- Publication number
- CN204348040U CN204348040U CN201420811436.4U CN201420811436U CN204348040U CN 204348040 U CN204348040 U CN 204348040U CN 201420811436 U CN201420811436 U CN 201420811436U CN 204348040 U CN204348040 U CN 204348040U
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- triode
- baby
- resistance
- diaper
- hummer
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Abstract
The utility model discloses the wet testing circuit of a kind of baby' diaper urine, comprise transformer T, resistance R1 ~ R4, electric capacity C1 and C2, the base stage of triode Q2, triode Q1 and Q2, hummer SK, humidity sensor M, battery E; When baby' diaper is dry, the two ends of humidity sensor M are insulation, and triode Q1 and triode Q2 is cut-off, hummer SK not sounding; If baby' diaper is by baby's urinating, the two ends resistance value of humidity sensor M can decline immediately, and the base current passed through makes VT1 conducting, and VT2 also works in succession, so hummer SK just have issued chimes of doom.Have simple to operate, easily facilitate, safety and stability, the feature that the life-span is long.
Description
Technical field
The utility model relates to Humidity Detection technical field, the wet testing circuit of espespecially a kind of baby' diaper urine.
Background technology
Diaper is child-bearing necessary article, and newborn baby almost uses 7-8 sheet every day.Because newborn baby urinates or just relatively frequently, the just red stern of easy appearance sealed for a long time by diaper, needs timely duty to change.How to judge whether that this is to baby's changing babies' napkin? most of father and mother rely on hand to touch in early days, and how many urines of sensation diaper absorbent judges, sometimes wait baby urinate wet for a long time, diaper becomes not only heavily but also swollenly just to know.Can discover in time to allow new hand father and mother and to baby's more changing babies' napkin, some urine are wet reminds design just to arise at the historic moment.
Summary of the invention
The wet testing circuit of a kind of baby' diaper of the utility model urine, it is characterized in that for above-mentioned deficiency, a kind of working stability is provided, utilizes the change of the two ends resistance value of humidity sensor M to carry out the wet circuit detected of baby' diaper urine, have simple to operate, easy to use, safety and stability, the feature that the life-span is long.
To achieve these goals, technical solution of the present utility model is: the wet testing circuit of a kind of baby' diaper urine comprises transformer T, resistance R1 ~ R4, electric capacity C1 and C2, the base stage of triode Q2, triode Q1 and Q2, hummer SK, humidity sensor M, battery E, the positive pole of battery E respectively with the positive terminal of electrochemical capacitor C4, the center tap of primary coil N1 and N2 of transformer T, the collector of triode Q1 is connected, the other end of primary coil N1 meets electric capacity C1 and C2 respectively, the base stage of the other end difference connecting resistance R4 and triode Q2 of electric capacity C1, the other end of electric capacity C2 connects the collector of triode Q2 and the other end of primary coil N2 respectively, the base stage connecting resistance R1 of triode Q1, the emitter of triode Q1 is by the other end of resistance R2 connecting resistance R4 and the positive terminal of electrochemical capacitor C3, the negative pole end connecting resistance R3 of electrochemical capacitor C3, the secondary coil N3 two termination hummer SK of transformer T, the two ends of humidity sensor M connect the positive pole of battery E and the other end of resistance R1 respectively, the other end of resistance R3, the negative pole of the emitter of triode Q2 and the negative pole termination battery E of electrochemical capacitor C4.
Feature of the present utility model and beneficial effect are: when baby' diaper is dry, and the two ends of humidity sensor M are insulation, and triode Q1 and triode Q2 is cut-off, hummer SK not sounding; If baby' diaper is by baby's urinating, the two ends resistance value of humidity sensor M can decline immediately, and the base current passed through makes VT1 conducting, and VT2 also works in succession, so hummer SK just have issued chimes of doom.Have simple to operate, easy to use, safety and stability, the feature that the life-span is long.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
Accompanying drawing is circuit theory diagrams of the present utility model.
Embodiment
Shown in accompanying drawing, the wet testing circuit of a kind of baby' diaper of the utility model urine comprises transformer T, resistance R1 ~ R4, electric capacity C1 and C2, the base stage of triode Q2, triode Q1 and Q2, hummer SK, humidity sensor M, battery E, the positive pole of battery E respectively with the positive terminal of electrochemical capacitor C4, the center tap of primary coil N1 and N2 of transformer T, the collector of triode Q1 is connected, the other end of primary coil N1 meets electric capacity C1 and C2 respectively, the base stage of the other end difference connecting resistance R4 and triode Q2 of electric capacity C1, the other end of electric capacity C2 connects the collector of triode Q2 and the other end of primary coil N2 respectively, the base stage connecting resistance R1 of triode Q1, the emitter of triode Q1 is by the other end of resistance R2 connecting resistance R4 and the positive terminal of electrochemical capacitor C3, the negative pole end connecting resistance R3 of electrochemical capacitor C3, the secondary coil N3 two termination hummer SK of transformer T, the two ends of humidity sensor M connect the positive pole of battery E and the other end of resistance R1 respectively, the other end of resistance R3, the negative pole of the emitter of triode Q2 and the negative pole termination battery E of electrochemical capacitor C4.
During use, when baby' diaper is dry, the two ends of humidity sensor M are insulation, and triode Q1 and triode Q2 is cut-off, hummer SK not sounding; If baby' diaper is by baby's urinating, the two ends resistance value of humidity sensor M can decline immediately, and the base current passed through makes VT1 conducting, and VT2 also works in succession, so hummer SK just have issued chimes of doom.Have simple to operate, easily facilitate, safety and stability, the feature that the life-span is long.
the above; embodiment is only be described preferred implementation of the present utility model; not scope of the present utility model is limited; under the prerequisite of spirit not departing from the utility model technology; the various distortion that this area engineering technical personnel make the technical solution of the utility model and improvement, all should fall in protection domain that claims of the present utility model determine.
Claims (1)
1. the wet testing circuit of baby' diaper urine, is characterized in that: the described wet testing circuit of baby' diaper urine comprises transformer T, resistance R1 ~ R4, electric capacity C1 and C2, the base stage of triode Q2, triode Q1 and Q2, hummer SK, humidity sensor M, battery E, the positive pole of battery E respectively with the positive terminal of electrochemical capacitor C4, the center tap of primary coil N1 and N2 of transformer T, the collector of triode Q1 is connected, the other end of primary coil N1 meets electric capacity C1 and C2 respectively, the base stage of the other end difference connecting resistance R4 and triode Q2 of electric capacity C1, the other end of electric capacity C2 connects the collector of triode Q2 and the other end of primary coil N2 respectively, the base stage connecting resistance R1 of triode Q1, the emitter of triode Q1 is by the other end of resistance R2 connecting resistance R4 and the positive terminal of electrochemical capacitor C3, the negative pole end connecting resistance R3 of electrochemical capacitor C3, the secondary coil N3 two termination hummer SK of transformer T, the two ends of humidity sensor M connect the positive pole of battery E and the other end of resistance R1 respectively, the other end of resistance R3, the negative pole of the emitter of triode Q2 and the negative pole termination battery E of electrochemical capacitor C4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420811436.4U CN204348040U (en) | 2014-12-19 | 2014-12-19 | The wet testing circuit of a kind of baby' diaper urine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420811436.4U CN204348040U (en) | 2014-12-19 | 2014-12-19 | The wet testing circuit of a kind of baby' diaper urine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204348040U true CN204348040U (en) | 2015-05-20 |
Family
ID=53231296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420811436.4U Expired - Fee Related CN204348040U (en) | 2014-12-19 | 2014-12-19 | The wet testing circuit of a kind of baby' diaper urine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204348040U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110123533A (en) * | 2019-06-10 | 2019-08-16 | 吴建堂 | Baby urinates urine alarm set |
-
2014
- 2014-12-19 CN CN201420811436.4U patent/CN204348040U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110123533A (en) * | 2019-06-10 | 2019-08-16 | 吴建堂 | Baby urinates urine alarm set |
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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: 20150520 Termination date: 20151219 |
|
| EXPY | Termination of patent right or utility model |