Temperature sensor algorithm

Abstract

The invention discloses a temperature sensor algorithm, which performs compensation through a software algorithm to achieve the purpose of accurate temperature measurement and temperature control, performs modeling on linear separable data, analyzes the relationship between a single input independent variable and a single output dependent variable, and performs interval calculation by fitting a sample curve and using a logic function. Modeling is rapid, simple and convenient, the method is particularly useful for a temperature sensor which is small in data size, logic functions are very visually understood and explained, the method is very sensitive to abnormal values, the detection precision can be improved, and finally high-precision temperature measurement and control are achieved.

Description

technical field [0001] The invention relates to a temperature control method, in particular to a temperature sensor algorithm. Background technique [0002] In recent years, the theoretical development of temperature inspection has been relatively mature, but in measurement and control, how to ensure the correctness of the collected data and how to control the measured temperature more accurately is still a problem that needs to be solved. [0003] The measured temperature T of the temperature sensor has a linear relationship with the resistance R, but in fact it is not completely linear, and there will be an error of several degrees Celsius where the deviation is large. If you want to get a relatively high-precision measurement result, you cannot calculate it according to the linear relationship. At present, the commonly used method is to use the look-up table method to calculate a more accurate temperature value, but the look-up table method first needs to establish an RT ...

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Problems solved by technology

[0003] The measured temperature T of the temperature sensor has a linear relationship with the resistance R, but in fact it is not completely linear, and there will be an error of several degrees Celsius in places with large deviations.

If you want to get a relatively high-precision measurement result, you can’t calculate it according to the linear relationship. At present, the commonly used method is to use the look-up table method to calculate a more accurate temperature value, but the look-up table method first needs to establish an RT corresponding table, and the temperature sensor measurement The wider the range, the more values ​​in the RT table, the greater the probability of errors when building the table, and it is not easy to detect; there is another disadvantage of the look-up table method. If the measured value is between the two values ​​​​of the RT table, it is difficult to accurately determine

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