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In this paper,the mechanical construction,thermal regulator design and temperature measurement system of alocal area were set up for large-scale linear measurement.Numerical analysis based on temperature correlatedcharacteristic is discussed to obtain optimal observation points for the measurements.The horizontal temperaturedistribution of the measured area is compared with the measurement of the variation of temperature at 15℃ and20~C over time,and characteristic of dynamic response is also discussed.In addition,the long-time stability ofmeasured temperature is analyzed by means of using the standard deviation.It characterizes the temperature dis-tribution performance of a large area and how it may impact the measurement of a large-scale object.
In this paper, the mechanical construction, thermal regulator design and temperature measurement system of alocal area were set up for large-scale linear measurement. Numerical analysis based on temperature correlatedcharacteristic is discussed to obtain optimal observation points for the measurements. Horizontal temperature distribution of the measured area is compared with the measurement of the variation of temperature at 15 ° C and20 ~ C over time, and characteristic of dynamic response is also discussed. In addition, the long-time stability of measured temperature is analyzed by means of using the standard deviation. It characterizes the temperature dis-tribution performance of a large area and how it may impact the measurement of a large-scale object.