Temperature compensation method, printed circuit board, compressor and vehicle

Abstract

The invention provides a temperature compensation method, a printed circuit board, a compressor and a vehicle. The temperature compensation method comprises the steps of: obtaining a data package, enabling the data package to comprise a plurality of data pairs, enabling each data pair to comprise an associated voltage and a measurement temperature, and enabling the measurement temperature to be calculated through a voltage and voltage temperature relation, performing clustering calculation on the data package to obtain a plurality of central data pairs, and forming a central data pair group bythe plurality of central data pairs, fitting a voltage temperature curve by the central data pair group, and generating a temperature compensation model according to the voltage temperature curve andthe theoretical voltage temperature curve, the temperature compensation model being used for compensating the measurement temperature. According to the temperature compensation method provided by theinvention, the digital signal of the NTC temperature-sensitive resistor is acquired, the data is analyzed by using a signal processing method, and finally, the temperature compensation model for monitoring the temperature in real time is established to compensate the measurement temperature, so that the temperature detection precision can be improved, and the printed circuit board can be protected more effectively.

Description

technical field [0001] The present invention relates to the field of electric vehicle compressor control, in particular to a temperature compensation method, a computer device, a computer-readable storage medium, a printed circuit board, a compressor and a vehicle. Background technique [0002] The commonly used NTC (negative temperature coefficient, negative temperature coefficient) thermistor is a temperature-sensitive resistor with a negative temperature coefficient, which changes with the change of temperature. The principle of temperature measurement is to derive the corresponding resistance value by collecting the voltage change at both ends of the resistor, and then use the look-up table method to find out the temperature corresponding to the resistance value. In practical applications, this temperature protection strategy will cause large errors, because the resistance value of the resistor may deviate from the calibration value, and the change in actual conditions i...

AI Technical Summary

Problems solved by technology

If the temperature detection error is large, it will have a great impact on the service life of components and PCB boards, as well as the reliability of the entire compressor

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