Design and Implementation of High Precision Temperature Measurement Unit

3rd International Conference on Energy Equipment Science and Engineering

Zeng, Xianzhen^1 ; Yu, Weiyu^1 ; Zhang, Zhijian^2 ; Liu, Hancheng^2

South China University of Technology, Guangzhou

510641, China^1

Dongguan University of Technology, Dongguan

523808, China^2

关键词: Calibration source;    Design and implementations;    Digital temperature sensor;    Energy-saving measures;    High-precision temperature measurements;    Liquid scintillator;    Photomultiplier tube;    Transmission speed;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/128/1/012127/pdf
DOI  :  10.1088/1755-1315/128/1/012127

来源: IOP

【 摘 要 】

Large-scale neutrino detector requires calibration of photomultiplier tubes (PMT) and electronic system in the detector, performed by plotting the calibration source with a group of designated coordinates in the acrylic sphere. Where the calibration source positioning is based on the principle of ultrasonic ranging, the transmission speed of ultrasonic in liquid scintillator of acrylic sphere is related to temperature. This paper presents a temperature measurement unit based on STM32L031 and single-line bus digital temperature sensor TSic506. The measurement data of the temperature measurement unit can help the ultrasonic ranging to be more accurate. The test results show that the temperature measurement error is within ±0.1°C, which satisfies the requirement of calibration source positioning. Take energy-saving measures, with 3.7V/50mAH lithium battery-powered, the temperature measurement unit can work continuously more than 24 hours.