Electronic thermometer calibration method

Abstract

The invention discloses an electronic thermometer calibration method which comprises the following steps: step 1, placing an electronic thermometer in a standard temperature water tank, setting the initial temperature of the standard temperature water tank to be x DEG C, gradually increasing the temperature of the standard temperature water tank by 10m DEG C, and selecting a temperature calibration point [alpha]i every time the temperature of the standard temperature water tank is gradually increased by 10m DEG C; 2, when the temperature of the standard temperature water tank reaches a temperature calibration point [alpha]i, enabling the CPU circuit to collect a resistance signal [beta]j output by the temperature sensor; and 3, enabling the temperature calibration point [alpha]i and the resistance signal [beta]j to be in one-to-one correspondence to establish a database, writing the database into the CPU circuit, and completing calibration work. The electronic temperature is calibrated by using the standard temperature water tank, and the temperature of the standard temperature water tank is matched with the resistance signals output by the temperature sensor one by one to establish a database and write the database into the CPU circuit, so that the influence of the low-precision temperature sensor and the processing circuit on temperature measurement is reduced, and the accuracy is improved.

Description

technical field [0001] The invention relates to a method for calibrating an electronic thermometer. Background technique [0002] The measurement accuracy of the electronic thermometer is related to the accuracy of the temperature sensor and the processing circuit. Choosing a high-precision temperature sensor and processing circuit will lead to a substantial increase in cost, which is not conducive to family purchase and use, and products with high prices are also not conducive to market promotion. , and the electronic thermometer with low-precision temperature sensor and processing circuit has large errors, resulting in low product quality. Therefore, it is necessary to propose a calibration method for low-precision electronic thermometers to reduce errors and improve product quality. Contents of the invention [0003] The invention provides a method for calibrating an electronic thermometer, which can solve the problems pointed out in the background art. [0004] A meth...

AI Technical Summary

Problems solved by technology

[0002] The measurement accuracy of the electronic thermometer is related to the accuracy of the temperature sensor and the processing circuit. Choosing a high-precision temperature sensor and processing circuit will lead to a substantial increase in cost, which is not conducive to family purchase and use, and products with high prices are also not conducive to market promotion. , and the use of low-precision temperature sensors and electronic thermometers with processing circuits has large errors, resulting in low product quality. Therefore, it is necessary to propose a calibration method for low-precision electronic thermometers to reduce errors and improve product quality.