Verification table temperature measuring method based on Kalman filtering

Abstract

The invention relates to a temperature measuring method, in particular to a verification table temperature measuring method based on Kalman filtering. The method includes the steps that parameters of a Kalman filter are initialized; according to a previous state noise value and the optimal value, a current-moment numerical value is predicted, and Kalman gain is calculated; an innovation sequence is added and used for performing Kalman processing on data; an existing state numerical value is estimated according to a previous state numerical value, next state covariance is calculated, related data are updated, and the Kalman filtering optimal value is returned. The innovation sequence is added into Kalman filtering, and the anti-interference capacity of a large verification table temperature measuring circuit is improved for an industry site; Kalman filtering is very good in smoothness, and water temperatures of a verification table water inlet tube, a water return tube and a water tank can be accurately measured in real time; Kalman filtering is introduced into verification table temperature measuring of the heat metering industry, and the method has certain demonstration meaning and has a certain demonstration effect.

Description

technical field [0001] The invention relates to a temperature measurement method, in particular to a Kalman filter-based calibration platform temperature measurement method. Background technique [0002] In the heat metering industry, ultrasonic heat meter verification equipment is required to verify the factory ultrasonic heat meters one by one, which requires the verification platform itself to be able to measure the water temperature in the pipeline accurately and in real time; since the measurement system is close to high-power motors and other equipment, The test site environment is relatively complicated, and the temperature measuring circuit in the verification equipment needs to have good anti-interference ability. In the prior art, these two conveniences in the verification equipment need to be improved. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a temperature measurement method of a calibration pla...

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Problems solved by technology

[0002] In the heat metering industry, ultrasonic heat meter verification equipment is required to verify the factory ultrasonic heat meters one by one, which requires the verification platform itself to be able to measure the water temperature in the pipeline accurately and in real time; since the measurement system is close to high-power motors and other equipment, The test site environment is relatively complicated, and the temperature measurement circuit in the verification equipment needs to have good anti-interference ability. In the existing technology, it is necessary to improve these two conveniences in the verification equipment.

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