Desgin of body temperature alarm for night

A kind of the body-temperature alarm device that is suitable to household and hospital is designed.The thermistor is used as temperature sensor,integrated-operational-amplifier is used,the light emitting diode(LED) is used for display.The basic information of the body temperature is judged by looking color of the LED.The heat type of valetudinarian is displayed within 2~3 s measured under tongue and 8 s measured under axilla.This device has many excellence peculiarities such as low cost,light weight and being suitable to be spread and popularized.