Design and application of temperature compensating element of hollow inclusion stress gauge

The hollow inclusion stress gauge is widely used in measurement of ground stress, now the method which uses thermistor for complete temperature compensation is widely adopted. Through comprehensive comparison and analysis of the thermistor and temperature sensor DS18B20, it was found that DS18B20 is more suitable. A circuit system for temperature measurement using DS18B20 as the sensor was designed, controlled by single chip microcomputer with digital tube display. The circuit, verified in laboratory experiment, has been successfully applied in mines.