CN2056267U

CN2056267U - Alarm for infant kicking quilt or urinating

Info

Publication number: CN2056267U
Application number: CN 89208771
Authority: CN
Inventors: 许尚先; 许景有
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-06-28
Filing date: 1989-06-28
Publication date: 1990-04-18

Abstract

The utility model discloses an alarm for infant kicking a quilt or urinating, comprising a humidity sensor, a cooling sensor, a cooling signal generator and an alarm. The utility model can alarm in time when infants kick the quilt or urinate and inform parents of replacing diapers or covering the quilt. Alarm signals simulating animals' voices do not hurt people's hearing organs.

Description

Alarm for infant kicking quilt or urinating

The utility model belongs to household appliance technical field, is specifically related to a kind of baby and plays by urine-wet alarm device.

If the infant urinates wet untimely replacing the later on, will influence the infant and have a rest, even cause disease of skin.The infant often will be kicked open in bed, if untimely building, it is sick that the infant is suffered from cold.In order to guarantee growing up healthy and sound of infant, its father and mother or nurse must day and night nurse the infant, consume a large amount of energy.Chinese patent 86206633 discloses the wet baby bunting of a kind of automatic newspaper, and this patent has solved the infant and urinated the problem of reporting to the police in wet back adorning an energy on the sleeping bag and having the alarm that sends sound and light signal under the occasion of wet signal automatically.The weak point of this technology is only to have solved the infant to urinate wet warning problem, does not solve and plays by the warning problem, and the mode of its warning is to utilize the piezoelectric ceramic piece sounding in addition, and its volume is little, and tonequality is also bad.

The purpose of this utility model provide a kind of can to the infant play by, urine is wet can both report to the police, chimes of doom is the device of simulated animal cry.

The technical scheme that realizes this purpose is: be connected between the biasing resistor R6 and positive source of the triode BG4 in the alarm by wet sensor, alarm comprises complementary note amplifier BG4 and BG5, be connected on capacitor C 1 and inductance L between transistor BG4 base-emitter-base bandgap grading, be connected on the loudspeaker of transistor BG5 collector, the cooling signal generator joins by diode D and alarm, and the input end of cooling sensor and cooling signal generator joins.Alarm, the cooling signal generator is cased, cooling sensor and joined with cooling signal generator and alarm respectively by the jack on the shell by wet sensor.

The cooling signal generator comprises differential amplifier BG2 and BG3, be connected on the resistance R 4 and the potentiometer W of transistor BG2 base stage, be connected on the resistance R 1 of transistor BG3 base stage, resistance R 1, R4, potentiometer W and cooling sensor are formed a bridge diagram, base stage is connected on the collector of transistor BG2, and emitter is connected on the output amplifier transistor BG1 of the collector of transistor BG3.The cooling sensor is the thermistor of a negative temperature coefficient, and the material of outsourcing one deck quality softness is drawn two wiring.

The utility model has the advantages that: to the infant play by or urine is wet in time reports to the police, thereby in time notify the adult more changing babies' napkin or put up bed clothes, prevent that the infant from suffering from cold or be subjected to the hardship of humidity.Alerting signal is the simulated animal cry, and tonequality is good, does not stimulate sense of hearing sense organ.

The utility model has the following drawings:

Fig. 1 infant plays by the urine-wet alarm device outside drawing,

Fig. 2 sensor construction synoptic diagram of lowering the temperature,

Fig. 3 is subjected to the wet sensor structural representation,

Fig. 4 circuit theory diagrams,

Fig. 5 printed-wiring board (PWB) figure.

Embodiment:

This baby plays by the circuit of urine-wet alarm device (Fig. 4) and comprises alarm 16 and cooling signal generator 15 two parts.Alarm 16 comprises: complementary note amplifier BG4 and BG5, be connected on capacitor C 1 and inductance L between transistor BG4 base-emitter-base bandgap grading, be connected on the loudspeaker 3 of transistor BG5 collector, be connected on the capacitor C 2 between transistor BG4 base stage and the transistor BG5 collector, be connected on the biasing resistor R6 of transistor BG4 base stage.C1 and L form a LC oscillator, supply with current signal off and on of base stage of transistor BG4, make loudspeaker 3 send the simulated animal cry.When the value of capacitor C 1 is 10 μ f, when the value of resistance R 6 is 4.7K Ω, tonequality the best.Cooling signal generator 15 comprises differential amplifier BG3 and BG2, be connected on the resistance R 4 and the potentiometer W of transistor BG2 base stage, be connected on the resistance R 1 of transistor BG3 base stage, be connected on the common emitter resistance R 5 of the emitter of transistor BG2 and BG3, base stage is connected on the collector of transistor BG2, and emitter is connected on the output amplifier tube BG1 of the collector of transistor BG3.Resistance R 1, R4, potentiometer W and the cooling sensor 7 that is connected on transistor BG3 base stage are formed a bridge diagram.Cooling signal generator 15 links to each other with alarm 16 by diode D, and urine wets or plays and can be carried out the individual event warning like this, also can report to the police simultaneously, and not dried mutually scratching.

The circuit of cooling signal generator 15 and alarm 16 is all arranged and is put on printed-wiring board (PWB) (Fig. 5), and printed-wiring board (PWB) is contained in the shell 1, cooling sensor jack 5 is arranged on the shell 1 and be subjected to wet sensor jack 6, and power switch 2 also is equipped with one and portablely is with 4.

Cooling sensor 7 is thermistors 8 of a negative temperature coefficient, and the material of outsourcing one deck softness is drawn two wiring 9 and 10.During use, sensor 7 is located on bed clothes inboard or the baby's nightwear, after bed clothes are kicked open, the resistance of resistance 8 increases, thereby has destroyed the balance of the bridge diagram in the cooling signal generator 15, makes the base stage of differential amplifier BG2 and BG3 produce potential difference (PD), and there is electric current to pass through, transport to transistor BG1 by collector and carry out the electric current amplification, the electric current after the amplification is coupled to alarm 16 by diode D, makes loudspeaker 3 send alerting signal.

Be subjected to the wet sensor 11 can be with 6 * 3 centimetres copper clad plate 12, the middle Copper Foil of carving 1 mm wide, the cloth of outsourcing one deck softness is drawn

wiring

13 and 14 at the two ends of copper clad plate 12.Be connected between the positive pole of biasing resistor R6 and power supply E by input jack 6 by wet sensor 11.During use, will be placed in the middle of infant's the diaper by wet sensor 11, when the infant urinate wet after, the gaps of carving Copper Foil in the middle of the copper clad plate 12 begin to have electric current to pass through, transistor BG4 starts working, and makes loudspeaker 3 send alerting signal.

Claims

1, a kind of baby plays by urine-wet alarm device, comprise shell 1, at least one is subjected to wet sensor 11, a loudspeaker 3 and an alarm 16, the feature of this utility model is: be connected between the biasing resistor R6 and power supply E positive pole of the triode BG4 in the alarm 16 by wet sensor 11, alarm 16 comprises complementary note amplifier BG4 and BG5, be connected on capacitor C 1 and inductance L between transistor BG4 base-emitter-base bandgap grading, be connected on the loudspeaker 3 of transistor BG5 collector, cooling signal generator 15 joins by diode D and alarm 16, and cooling sensor 7 joins with the input end 5 of cooling signal generator 15.

2, baby as claimed in claim 1 plays by urine-wet alarm device, it is characterized in that cooling signal generator 15 comprises differential amplifier BG2 and BG3, be connected on the resistance R 4 and the potentiometer W of transistor BG2 base stage, resistance R 1, R4, W and cooling sensor 7 are formed a bridge diagram, are connected on the resistance R 1 of transistor BG3 base stage, base stage is connected on the collector of transistor BG2, and emitter is connected on the output amplifier tube BG1 of the collector of transistor BG3.

3, baby as claimed in claim 1 plays by urine-wet alarm device, it is characterized in that: cooling sensor 7 is thermistors 8 of a negative temperature coefficient, and the material of outsourcing one deck quality softness is drawn two wiring 9 and 10.

4, baby as claimed in claim 1 plays by urine-wet alarm device, it is characterized in that: the value of capacitor C 1 is 10 μ f, alerting signal tonequality the best that loudspeaker 3 sent when the value of resistance R 6 was 4.7K Ω.