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NTC Thermistor and Baby Temperature Monitor
2021/06/03 03:06:38

When babies are in the cold, fever and other physical discomfort, they need to be cared by their parents, which is easy to result in parents prone to fatigue and sleep like a log. If the baby appears any physical condition at this time, it is easy to miss the best time for treatment, resulting in irreversible consequences. Therefore, a variety of baby temperature monitors appear on the market, which used the characteristic that the resistance value of NTC thermistor decreases with the increase of temperature, the body’s temperature can be monitored in real time.

Today, EXSENSE Electronics introduces a baby temperature monitor, its has simple circuit design, good sensitivity, high precision in temperature alarm, low cost of production, with few devices, small size to achieve temperature monitoring, sound and light alarm functions. The baby temperature monitor includes a housing, two NTC thermistors, a buzzer, an NPN audion, a light-emitting diode, a variable resistor, an electrolytic capacitor and a photo-receptive sensor. The power supply is connected with the upper end of two NTC thermistors, the upper end of the buzzer, and the positive pole of light-emitting diode; The base of NPN audion is connected with the lower end of two NTC thermistor, upper end of variable resistor; The collector of NPN audion is connected with the lower end of buzzer and the negative pole of light-emitting diode; The emitter of NPN audion grounded, lower end of variable resistor. The power supply provides a forward bias voltage to the collector of NPN audion through a buzzer and a light-emitting diode, and the base voltage of NPN audion is controlled by the partial voltage of two NTC thermistors and variable resistors. The monitor uses NTC thermistor to monitor the baby's temperature in real time. If the baby's temperature exceeds the normal temperature, the monitor will be issued to alert the parents.

Through NTC thermistor, the baby temperature monitor realizes the two functions of baby temperature monitoring, sound and light alarm, which can effectively reduce the probability of serious diseases such as meningitis caused by high fever. The high-precision NTC thermistor produced by EXSENSE Electronics Technology Co., Ltd. has the advantages of fast response, great sensitivity and high cost performance, which plays an indispensable role in temperature monitoring of baby temperature monitor.

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