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A steady-state calibration method for thermistors avoiding self-heating effect

A thermistor and calibration method technology, applied in the direction of instruments, heat measurement, scientific instruments, etc., can solve the problem of additional temperature deviation, achieve the effect of improving the accuracy of temperature measurement and control, and avoiding self-heating effect

Active Publication Date: 2019-06-28
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

The thermistor steady-state calibration method solves the problem of measurement accuracy such as additional temperature deviation caused by the inconsistency of the thermistor's working current and calibration current in the existing calibration method, and realizes avoiding the self-heating effect and improving the accuracy of temperature measurement and control. , also provides the necessary guarantee for the accuracy and reliability of the spacecraft thermal control subsystem

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  • A steady-state calibration method for thermistors avoiding self-heating effect
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  • A steady-state calibration method for thermistors avoiding self-heating effect

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Embodiment Construction

[0029] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are merely Part of the embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0030] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, without having to use To describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropri...

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Abstract

The embodiment of the invention discloses a steady-state calibration method for a thermistor that avoids the self-heating effect. The thermistor steady-state calibration method ensures that the calibration current through the thermistor is equal to the operating current by adjusting the output voltage of the programmable DC power supply, and uses the arithmetic mean value of multiple sets of data to calculate the resistance value of the thermistor and Calibrate the temperature value, which solves the problem of measurement accuracy such as additional temperature deviation caused by the inconsistency of the thermistor’s working current and the calibration current in the existing calibration method. The accuracy and reliability of the thermal control subsystem of the device provide the necessary guarantee.

Description

Technical field [0001] The invention belongs to the technical field of temperature sensor calibration, and specifically relates to a method for steady state calibration of a thermistor that avoids self-heating effects. Background technique [0002] Thermistor is a semiconductor component that realizes temperature measurement based on the one-to-one mapping relationship between resistance temperature and resistance value. Compared with other types of temperature sensors, thermistors show comprehensive advantages in many aspects such as cold and heat sensitivity, temperature change response speed, space environment adaptability, long-life reliability and process feasibility. In view of this, thermistors are commonly used in spacecraft thermal control sub-systems for temperature measurement, control and compensation. [0003] With the rapid development of space precision instruments and equipment, how to improve the temperature measurement and control accuracy of the thermal control ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K15/00
CPCG01K15/00
Inventor 张旭升郭亮刘春龙于鹏毛阿龙黄勇
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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