Adjustable constant current temperature measuring system and method

Abstract

The invention provides an adjustable constant current temperature measuring system, and further provides an adjustable constant current temperature measuring method. The adjustable constant current temperature measuring system comprises a main control module, a continuous adjustable constant current source module, a voltage measuring module, a PT100 platinum thermal resistance sensor temperature measuring module, a storage module, a human machine interface module, a dual power supply module, a USB communication module and a lithium battery. The continuous adjustable constant current source module is used for providing a constant bias current value to a temperature measuring diode to enable corresponding voltages to be generated at both ends of the temperature measuring diode with the temperature change and is capable of automatically shifting. The PT100 platinum thermal resistance sensor temperature measuring module is used for outputting a fixed bias current value to a PT100 platinumthermal resistance sensor. The main control module is connected with the continuous adjustable constant current source module capable of automatically shifting, the voltage measuring module, the PT100platinum thermal resistance sensor temperature measuring module, the storage module, the human machine interface module and the USB communication module separately. The adjustable constant current temperature measuring system and method can quickly, effectively and reliably measure the temperature of a temperature sensor to improve the measurement efficiency, thereby being used as a basis for determining the measuring accuracy and quality of the temperature sensor, and displaying and finding out the overall change trend of the temperature by a temperature curve.

Description

technical field [0001] The invention relates to the technical field of temperature measurement by a temperature sensor, and more specifically relates to an adjustable constant current temperature measurement system and a temperature measurement method. Background technique [0002] In many fields such as industry and agriculture, national defense, aerospace and scientific research, temperature measurement has always played a pivotal role. Most measurement fields use temperature measuring diodes (temperature sensors) for temperature measurement. Temperature measuring diodes are widely used in all walks of life. , which is mainly to directly measure the temperature of the surface of the object and the environment in which the object is located. [0003] Among many temperature sensors, Pt100 platinum thermal resistance sensor is a temperature sensor whose resistance value changes with temperature, and it is an internationally recognized standard sensor for high-precision temper...

AI Technical Summary

Problems solved by technology

However, the current method of measuring temperature sensors is still mainly manual operation. Many manufacturers and research institutes have long used manual measurement and recording methods when using temperature sensors to measure temperature, resulting in heavy workload, low efficiency, difficult comparison and data accuracy. and poor synchronization

At the same time, this method of manually using instruments to repeatedly measure and convert other physical quantities of temperature sensors will have subjective judgments, and cannot quickly, reliably and accurately measure relevant data, resulting in measurement errors for temperature sensor detection Various problems such as large size, low detection accuracy and low detection efficiency

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