Development and application of a new temperature-measuring pick

• Published in: Measurement : journal of the International Measurement Confederation 2020-01, Vol.149, p.107034, Article 107034
• Main Authors: Liu, Sifei, Lu, Shuaifeng, Wan, Zhijun, Yang, Zhuangzhuang, Wang, Junhui
• Format: Article
• Language: English
• Subjects: Circuits; Coal cutting; Cushioning; Cutting; Electronic components; Error analysis; Friction; Sensors; Temperature; Temperature-measuring circuit; Temperature-measuring pick; Vibration; Water baths
• ISSN: 0263-2241; 1873-412X
• DOI: 10.1016/j.measurement.2019.107034

•A mine temperature-measuring pick based on PT100 was developed for the first time.•The theoretical resolution of sensor in the new circuit can be up to 0.0008 °C.•Data error between temperature-measuring pick and thermal infrared is less than 2%. To avoid the gas ignition danger caused by the friction between pick and rock, a pick temperature-measuring system was developed to obtain the actual temperature at the tip of cutting head. A mine temperature-measuring pick based on PT100 was developed for the first time. In the pick, the vibration and explosion of internal electronic components were prevented by a cushioning layer and a sealing cover. A new temperature-measuring circuit solution was proposed and the theoretical resolution of sensor can be up to 0.0008 °C. Then, the temperature-measuring pick was calibrated and corrected through a constant temperature water bath test, and the measurement error remained within 0.01 °C. According to the coal-cutting test, the data error between temperature-measuring pick and thermal infrared is less than 2%, which proves credibility, reliability and repeatability of the temperature-measuring pick. The temperature-measuring pick completely meets the actual needs of production.