CN211527659U

CN211527659U - Temperature sensor for dressing of children

Info

Publication number: CN211527659U
Application number: CN201920830322.7U
Authority: CN
Inventors: 王治全
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-06-03
Filing date: 2019-06-03
Publication date: 2020-09-18
Anticipated expiration: 2029-06-03

Abstract

A temperature sensor for dressing children, in the circuit, a thermistor R2, a resistor R3, a power supply I and a switch K are sequentially connected in series to form a complete loop, and a filter capacitor C1, a power supply indicator light D, a resistor R1, a triode PNP and a buzzer HA are sequentially connected in parallel among the temperature sensing resistor R3, the power supply I, the thermistor R2 and the switch K; the base electrode B of the PNP is connected in parallel between the resistor R3 and the thermistor R2, the collector electrode C of the PNP is connected in series with the buzzer HA, and the emitter electrode E of the PNP is connected in series with the resistor R1, so that an integral circuit of the children dressing temperature sensor is formed; the temperature sensor is small and exquisite, is slightly larger than a button, is safe and reliable in use, convenient to wear, low in cost and low in investment, and has certain popularization and application values.

Description

Temperature sensor for dressing of children

Technical Field

The utility model relates to a temperature sensing's problem, especially a children temperature sensor of dressing in children's dress clothes is felt to children.

Background

The cold prevention method is characterized in that the cold prevention season of infants and children is in winter, the resistance of the infants and children is weak, the cold and the heat of the children about three years old cannot be expressed, the cold and the clothes are common knowledge known by adults, however, the cold cannot be expressed by the children under the condition, the optimal temperature around the body is 28 degrees, the children easily catch the cold below the optimal temperature, the adults sometimes carelessly feel careless, the clothes cannot be timely added to the children, and the children are likely to catch the cold at this time.

Disclosure of Invention

In order to solve the problems that the clothes can not be increased or reduced in time due to cold and heat, the utility model provides a temperature sensor for dressing for children, the device makes a sound when the body of the children is lower than 28 degrees around, and gives a prompt, the temperature sensor is small and exquisite, slightly larger than a button, safe and reliable in use, convenient to wear, low in cost and low in investment, and has certain popularization and application values.

The utility model provides a technical scheme that its technical problem adopted is: a temperature sensor for dressing a child, comprising: the circuit comprises a power supply I, a switch K, a power indicator lamp D, a resistor R1, a thermistor R2, a triode PNP, a resistor R3, a buzzer HA, a fly-wheel diode D1, a filter capacitor C1, an emitter E, a base B and a collector C; the shape of this temperature sensor slightly is greater than the button, and its inside is equipped with temperature-sensing ware, temperature-sensing ware's circuit principle structure is: in the circuit, a thermistor R2, a resistor R3, a power supply I and a switch K are sequentially connected in series to form a complete electric loop, and a filter capacitor C1, a power supply indicator lamp D, a resistor R1, a triode PNP and a buzzer HA are sequentially connected in parallel among the thermistor R3, the power supply I, the thermistor R2 and the switch K; the base electrode B of the PNP is connected in parallel between the resistor R3 and the thermistor R2, the collector electrode C of the PNP is connected in series with the buzzer HA, the emitter electrode E of the PNP is connected in series with the resistor R1, and the buzzer HA is connected in parallel with a freewheeling diode D1.

When the temperature sensor is used, a child wears clothes and is placed in an underwear pocket, when the ambient temperature of the child is 28 degrees, the resistance value of the thermistor R2 is set to be incapable of enabling the base electrode current of the triode to change, when the ambient temperature of the body is lower than 28 degrees, the resistance value of the temperature sensing resistor becomes small, the temperature sensing resistor generates current change, the base electrode B of the triode is conducted, the current from the emitting electrode E to the collecting electrode C is amplified, and the current makes a sound through the buzzer HA to give a prompt.

The utility model has the advantages that: the children dressing temperature sensor is small and exquisite, slightly larger than a button, safe and reliable in use, convenient to wear, low in cost and investment, and has certain popularization and application values.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic diagram of the structural circuit principle of the utility model.

In the figure: I. the circuit comprises a power supply, a K switch, a D power indicator, an R1 resistor, an R2 thermistor, a PNP triode, an R3 resistor, an HA buzzer, a D1 freewheeling diode, a C1 filter capacitor, an E emitter, a B base and a C collector.

Detailed Description

The utility model provides a technical scheme that its technical problem adopted is: a temperature sensor for dressing a child, comprising: the circuit comprises a power supply I, a switch K, a power indicator lamp D, a resistor R1, a thermistor R2, a triode PNP, a resistor R3, a buzzer HA, a fly-wheel diode D1, a filter capacitor C1, an emitter E, a base B and a collector C; the shape of this temperature sensor slightly is greater than the button, and its inside is equipped with temperature-sensing ware, temperature-sensing ware's circuit principle structure is: in the circuit, a thermistor R2, a resistor R3, a power supply I and a switch K are sequentially connected in series to form a complete electric loop, and a filter capacitor C1, a power supply indicator lamp D, a resistor R1, a triode PNP and a buzzer HA are sequentially connected in parallel among the thermistor R3, the power supply I, the thermistor R2 and the switch K; the base electrode B of the PNP is connected in parallel between the resistor R3 and the thermistor R2, the collector electrode C of the PNP is connected in series with the buzzer HA, the emitter electrode E of the PNP is connected in series with the resistor R1, and the buzzer HA is connected in parallel with a fly-wheel diode D1.

When the temperature sensor is used, a child wears clothes and is placed in cloth clothes, when the ambient temperature of the child is 28 degrees, the resistance value of the resistor R3 is set to be incapable of changing the base electrode current of the triode, when the ambient temperature of the body is lower than 28 degrees, the resistance value of the temperature sensing resistor is reduced, the temperature sensing resistor generates current change, the base electrode B of the triode is conducted, the current from the emitter E to the collector C is amplified, and the current sounds after passing through the buzzer HA.

Claims

1. A temperature sensor for dressing a child, comprising: the circuit comprises a power supply I, a switch K, a power indicator lamp D, a resistor R1, a thermistor R2, a triode PNP, a resistor R3, a buzzer HA, a fly-wheel diode D1, a filter capacitor C1, an emitter E, a base B and a collector C; the method is characterized in that: the shape of this temperature sensor slightly is greater than the button, and its inside is equipped with temperature-sensing ware, temperature-sensing ware's circuit principle structure is: in the circuit, a thermistor R2, a resistor R3, a power supply I and a switch K are sequentially connected in series to form a complete electric loop, and a filter capacitor C1, a power supply indicator lamp D, a resistor R1, a triode PNP and a buzzer HA are sequentially connected in parallel among the thermistor R3, the power supply I, the thermistor R2 and the switch K; the base electrode B of the PNP is connected in parallel between the resistor R3 and the thermistor R2, the collector electrode C of the PNP is connected in series with the buzzer HA, the emitter electrode E of the PNP is connected in series with the resistor R1, and the buzzer HA is connected in parallel with a fly-wheel diode D1.