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Method and device for correcting temperature measuring equipment

A technology of temperature measurement equipment and calibration method, which is applied to measurement devices, electrical devices, thermometers, etc., can solve the problems of low calibration accuracy and long calibration time of temperature measurement devices, so as to improve calibration accuracy, shorten calibration time, The effect of eliminating errors

Pending Publication Date: 2021-11-02
SHANGHAI EASTSOFT MICROELECTRONICS
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Problems solved by technology

[0005] The invention provides a calibration method and device for temperature measuring equipment to solve the problems of long calibration time and low calibration accuracy in temperature measuring equipment

Method used

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  • Method and device for correcting temperature measuring equipment
  • Method and device for correcting temperature measuring equipment
  • Method and device for correcting temperature measuring equipment

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no. 1 example

[0064] refer to figure 2 , figure 2 As the first embodiment of the calibration method of the temperature measuring equipment of the present invention, the calibration method of the temperature measuring equipment includes the following steps:

[0065] Step S10, obtaining the first voltage value of the thermopile of the temperature measuring device at the first calibration temperature and the second voltage value at the second calibration temperature, and obtaining the temperature of the thermistor of the temperature measuring device at the first calibration temperature The first resistance value and the second resistance value at the second calibration temperature.

[0066] In this embodiment, the executor is the calibrating device of the temperature measuring device. For the convenience of description, the device is used below to refer to the calibrating device of the temperature measuring device. The temperature measurement equipment has a measurement temperature range. ...

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Abstract

The invention provides a method and device for correcting temperature measuring equipment. The method comprises the following steps: acquiring a first voltage value of a thermopile at a first correction temperature and a second voltage value of the thermopile at a second correction temperature, and acquiring a first resistance value of a thermistor at the first correction temperature and a second resistance value of the thermistor at the second correction temperature; respectively determining first sensitivity and second sensitivity of the thermistor according to the first resistance value and the second resistance value; according to the first voltage value, the second voltage value, the first resistance value, the second resistance value, the first sensitivity and the second sensitivity, determining the third sensitivity of the thermopile and the third resistance value of the thermistor at the environment temperature; and correcting the temperature measuring equipment according to the third sensitivity and the third resistance value. The temperature measuring equipment does not need to be placed in the temperature control device for standing, the correction time of the temperature measuring equipment is shortened, errors caused by the difference between the set environment temperature of the temperature control device and the actual environment temperature are eliminated, and the correction accuracy of the temperature measuring equipment is improved.

Description

technical field [0001] The invention relates to a calibration technology for temperature measuring equipment, in particular to a calibration method and device for temperature measuring equipment. Background technique [0002] Most temperature measuring equipment such as forehead thermometers, ear thermometers, and industrial temperature guns on the market use non-contact sensors (thermopiles) to measure the infrared energy emitted by the target object to achieve measurement. The sensor consists of two interfaces: a thermistor and a thermopile. components. The heat energy generates a small voltage difference through different metal materials in the thermopile, and the voltage difference can be converted and sampled by the analog-to-digital converter (ADC) in the single-chip microcomputer, and then returned to the temperature of the target object. [0003] Temperature measuring equipment needs to be calibrated before leaving the factory. At present, the temperature measuring...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K7/16
CPCG01K7/16
Inventor 陈光胜
Owner SHANGHAI EASTSOFT MICROELECTRONICS
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