Infrared thermopile relies on the Seebeck effect for non-contact infrared temperature measurement. Its output voltage difference is not only influenced by the infrared radiation intensity of the measured object but is also easily affected by environmental temperature drift, which can cause baseline shifts and data distortion. To meet the high-precision temperature measurement requirements in industrial, medical, and other applications, EXSENSE silver termination NTC chip is installed in infrared thermopile to collect the working environment temperature in real time. This helps offset thermopile temperature drift errors and ensures measurement stability, making NTC a essential component in standardized packaging of infrared thermopile.
During the packaging of infrared thermopile, EXSENSE silver termination NTC chip is usually integrated with the thermopile chip in the same package. The lower surface of NTC is mounted on the substrate via soldering process, and the upper surface is connected to the pin through bonding process. During temperature monitoring process, the hot junction of thermopile receives infrared radiation from the measured object, generating a voltage due to the temperature difference, while the cold junction temperature changes dynamically with the environment. At this point, EXSENSE bare chip can detect the internal ambient temperature in real time. The back-end MCU collects the NTC resistance signal the thermopile voltage signal, corrects measurement deviations caused by environmental drift through built-in temperature compensation algorithms, calibrating the actual temperature of the measured object. Without real-time monitoring data from the EXSENSE silver termination NTC chip, the thermopile can only output the raw voltage difference and cannot differentiate between radiation temperature differences and environmental changes, losing accurate measurement ability. Therefore, the NTC is crucial for its stable operation. The stable temperature monitoring of EXSENSE silver termination NTC chip in infrared thermopile relies on:
1. High accuracy: The accuracy of NTC in infrared thermopile can reach ±1%, accurately capturing small environmental temperature fluctuations. It effectively supports applications with strict temperature monitoring requirements, such as body temperature measurement and precision industrial equipment, etc., preventing overcompensation or undercompensation and ensuring reliable temperature measurement data.
2. Fast response: The response time of the EXSENSE bare chip can reach the millisecond level, promptly detecting temperature changes and avoiding dynamic measurement errors caused by delayed response. This feature allows infrared thermopile to continuously output accurate data even with changing ambient temperatures, greatly improving dynamic measurement efficiency and environmental adaptability.
In summary, EXSENSE silver termination NTC chip is not just an auxiliary component of the infrared thermopile; it is a core functional element in a highly stable infrared temperature measurement system, integral to thermopile measurement, calibration, and operation, has irreplaceable application value. The insertion of EXSENSE silver termination NTC chip has solved the environmental interference problem of non-contact temperature measurement of infrared thermopile, providing real-time and reliable basic data support for its temperature compensation algorithm.
