Thermal resistor steady state calibration method capable of evading self-heating effect
A technology of thermistor and calibration method, applied in instruments, scientific instruments, measuring heat, etc., can solve problems such as additional temperature deviation, and achieve the effect of improving temperature measurement and control accuracy and avoiding self-heating effects
Active Publication Date: 2018-09-25
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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[0029] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only Embodiments of some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts 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 drawings are used to distinguish similar objects, and not necessarily Used to describe a specific sequence or sequence. It is to be understood that the terms so used are interchangeable under appropriate ...
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The embodiment of the invention discloses a thermal resistor steady state calibration method capable of evading a self-heating effect. In the thermal resistor steady state calibration method, throughadjusting the output voltage of a programmable direct current power supply, a calibrated current passing through the thermal resistor is ensured to be equal to an operating current, and the arithmeticmean value of multiple sets of data is used to calculate the resistance value and the calibrated temperature value of the thermal resistor so that a problem of measurement accuracy of additional temperature deviation and the like caused by the inconsistent operating current and calibrated current of the thermal resistor in an existing calibration method is solved. The self-heating effect is evaded, temperature measurement and control accuracy is improved, and simultaneously necessary guarantee is provided for the accuracy and reliability of a spacecraft thermal control subsystem.
Description
technical field [0001] The invention belongs to the technical field of temperature sensor calibration, and in particular relates to a steady-state calibration method for a thermistor that avoids self-heating effects. Background technique [0002] A thermistor is a semiconductor component that measures temperature based on the one-to-one mapping relationship between the temperature of the resistor and the resistance value. Compared with other types of temperature sensors, thermistors show comprehensive advantages in cold and heat sensitivity, temperature change response speed, space environment adaptability, long-life reliability, and process implementability. In view of this, the spacecraft thermal control subsystem generally uses thermistors 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 subsystem h...
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Login to View More 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