With the enactment of the Minamata Convention on Mercury, traditional mercury thermometer is gradually withdrawing from the market, and electronic thermometer has become the mainstream alternative due to its safety, speed, and digital advantages. Compared with mercury thermometer, electronic thermometer usually uses EXSENSE high-accuracy miniature NTC thermistor as front-end temperature sensing component in the design, so the temperature measurement accuracy will be higher and the temperature measurement speed will be faster.
The temperature measurement system based on EXSENSE thermistor in electronic thermometer often also includes voltage divider circuit, ADC, MCU, etc. NTC thermistor is usually installed at the front end of the electronic thermometer probe (i.e., the part that is in direct contact with or closest to the human body), which can quickly and accurately sense subtle changes in human body temperature, laying the foundation for subsequent physical condition judgment. If the NTC resistance value decreases significantly when the body temperature rises, it will be converted into an electrical signal by the voltage divider circuit. The ADC then converts the electrical signal into a digital signal, and finally analyzes and processes it by the MCU, and then displays the corresponding temperature value on the electronic thermometer screen.
In addition, in the actual working process, the ambient temperature, the temperature drift of other components in the circuit, etc., may affect the measurement accuracy of the electronic thermometer. When the ambient temperature changes, the resistance value of EXSENSE high-accuracy miniature NTC will also change accordingly, and the voltage divider circuit will adjust accordingly to offset the interference of unstable factors such as ambient temperature on the measurement results, so that the electronic thermometer can control the measurement error within the range under different environmental conditions to ensure the accuracy of body temperature monitoring. The reason why EXSENSE high-accuracy miniature NTC thermistor used in electronic thermometer is because of its ability to:
1. High accuracy: The ± 1% accuracy of miniature NTC can assist the electronic thermometer to maintain a high and accurate measurement level, providing reliable data support for doctors to diagnose the condition, so as to take corresponding treatment measures and play a positive role in promoting the recovery of patients.
2. Fast response: The miniature NTC temperature sensing head has a small size (reach to 1.2mm in diameter), which makes it highly sensitive and can quickly sense subtle body temperature changes. Therefore, EXSENSE thermistor can help electronic thermometer measure body temperature in a short time, improving its work efficiency.
EXSENSE high-accuracy miniature NTC thermistor plays an irreplaceable role in temperature monitoring in electronic thermometer by virtue of its negative correlation between temperature and resistance value. In clinical applications, electronic thermometer based on EXSENSE thermistor can achieve continuous and accurate body temperature monitoring, help doctors grasp the trend of patient body temperature changes in real time, and provide quantitative basis for the adjustment of treatment plans. For home health monitoring, EXSENSE high-accuracy miniature NTC thermistor can avoid misjudgments caused by errors and improve the reliability of health monitoring of electronic thermometer.
