CN2718693Y

CN2718693Y - Baby bed-wetting alarm

Info

Publication number: CN2718693Y
Application number: CN 200420026743
Authority: CN
Inventors: 王明晶
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-04-26
Filing date: 2004-04-26
Publication date: 2005-08-17
Anticipated expiration: 2014-04-26

Abstract

The utility model discloses a baby bed-wetting alarm, comprising a humidity transducer, a signal processing module, a delay circuit, a voice module, and a loudspeaker. The humidity of diapers is detected by the humidity transducer. After baby wets the bed, the humidity transducer sends out a signal, and the utility model immediately emits light and alarms. Meanwhile, the voice module is actuated to sound to remind people of the baby's bed-wetting after 30 to 60 seconds. The utility model can remind nursing people of the baby's bed-wetting at the first time without frightening the baby, and embodies humanization. The baby bed-wetting alarm is good for physical and mental health of people and the baby.

Description

Baby's alarm of wetting the bed

Technical field

The utility model relates to a kind of warning device, specifically is a kind ofly to detect infant urine by humidity sensor and send the device of warning, belongs to electronic application field.

Background technology

At present; application of electronic technology is very extensive; product about alarm is many; but also there is not product for the initiative prompting that the baby wets the bed; at present for baby's just passive protection of wetting the bed, finish protection by the hydroscopicity that increases diaper to infant skin, can't in time detect; cause the baby to be flooded by urine for a long time, skin is constituted very big injury.

The utility model content

The purpose of this utility model provides a kind of device that sends the alarm voice by humidity sensor detection infant urine.

The technical solution of the utility model is as follows:

Baby's alarm of wetting the bed, include humidity sensor, signal processing module, delay circuit, voice module is characterized in that: humidity sensor SL connects the signal processing module of being made up of T1, T2, again the delay circuit of forming through 3 NAND gate circuit, send drive signal and give voice module, cross the loudspeaker pronunciation.

The described baby alarm of wetting the bed, it is characterized in that: sensor SL connects triode T1 base stage, the SL other end is connected by collector, triode T1 emitter and the triode T2 base stage that R2 meets triode T1, light emitting diode VD1 negative pole connects the collector of triode T2 through R3, the grounded emitter of triode T2, R4, C1 constitute the B end that charging circuit meets Sheffer stroke gate F1, the output of F1 connects the input end of F2 negative circuit, connect the F end of F3 again via R5, C2 charging circuit, F3 output connects voice module, and voice module directly drives loudspeaker.Power supply VCC is made up of four joint dry cells

This baby alarm of wetting the bed utilizes humidity sensor, and the humidity of diaper is detected, and after the baby wet the bed, humidity sensor can provide a signal, luminous immediately warning; Simultaneously, baby's psychology is not caused negative effect, designed 30-60 delay circuit second, make the baby having urinated, drive the voice module sounding again, remind child adult to wet the bed in order to make alarm, this changing babies' napkin, thus protect baby's skin timely.

The beneficial effects of the utility model are; can know that the baby wets the bed in the very first time; protect the healthy of baby to greatest extent, embodied the love of human nature simultaneously, the baby is irritated little; also alleviate the head of a family's burden; make the head of a family during the nursing child, can feel at ease to handle other affairs, even night; also not needing can't ortho because of the health of worrying child, has guaranteed baby-monitoring personnel's physical and mental health.

Description of drawings

Fig. 1 is a circuit block diagram of the present utility model.

Fig. 2 is circuit theory diagrams of the present utility model.

Embodiment

Referring to accompanying drawing, circuit structure of the present utility model as shown in Figure 2.

Under the normality, humidity sensor SL is an off-state, testing circuit T ₁, T ₂Not conducting, A is a low level, B is high level, then Y ₁Be high level, thus Y ₂Be low level, then the high F of E is low, so Y ₃The output high level, the IC voice module is not worked, and loudspeaker is noiseless.

When sensor SL detects moisture signal, self conducting, thus resistance is reduced to several ohm of T ₁, T ₂Conducting, the luminous warning of light emitting diode VD1, this moment, power supply passed through R ₄To the C1 charging, when C1 was full of, A, B were high level, then Y simultaneously ₁Be low level, Y ₂Anti-phase is high level, passes through R immediately ₅To the C2 charging, along with the C2 charging, F is upgraded to high level by low, and E is a high level, so the Y3 output low level triggers voice module IC work, loudspeaker begins audio alert.In the circuit, time-delay is realized by R4, C1 and R5, C2, can decide the RC parameter according to concrete needs.

Claims

1, baby's alarm of wetting the bed, include humidity sensor, signal processing module, delay circuit, voice module is characterized in that: humidity sensor SL connects the signal processing module of being made up of T1, T2, again the delay circuit of forming through 3 NAND gate circuit, send drive signal and give voice module, pronounce by loudspeaker.

2, the baby as claimed in claim 1 alarm of wetting the bed, it is characterized in that: sensor SL connects triode T1 base stage, the SL other end connects the collector of triode T1 by R2, triode T1 emitter is connected with triode T2 base stage, light emitting diode VD1 negative pole connects the collector of triode T2 through R3, the grounded emitter of triode T2, R4, C1 constitutes the B end that charging circuit meets Sheffer stroke gate F1, the output of Sheffer stroke gate F1 connects the input end of Sheffer stroke gate F2 negative circuit, again via R5, the C2 charging circuit connects the F end of F3, Sheffer stroke gate F3 output connects voice module, voice module directly drives loudspeaker, and power supply VCC is done by four joints and forms electricly.