Temperature measurement method for moving object

Abstract

The invention provides a temperature measurement method for a moving object. The temperature measurement method comprises the following steps that (1) an absolute motion reference system, a moving system and a moving point are established; (2) a motion state of the measured object is judged, and the absolute motion of the measured object is decomposed into transport motion and relative motion, andthe absolute motion is divided into linear motion, rotation around a fixed axis and synthetic motion of the linear motion and the fixed-axis rotation according to the characteristics of motion; and (3) a specific temperature measurement and calculation method is determined, specifically, according to the difference of temperature measurement point positions, temperature measurement points of themeasured object are divided into internal temperature measurement points and boundary temperature measurement points; according to the different moving speeds of the measured object, the measured object is divided into low-speed black metal, high-speed black metal and non-black metal; a contact direct measurement method or a non-contact measurement method is selected and used according to different conditions; and when the non-contact measurement method is used, the temperature of the measured object=T<actual measurement>+[delta]T<correction>.

Description

technical field [0001] The invention relates to a temperature measurement method and technology, especially temperature measurement for moving objects. Background technique [0002] There are many methods and technologies for measuring the temperature of objects, such as thermocouple method, thermal imaging technology, numerical calculation method, contact and non-contact measurement, direct method and indirect method, etc. However, these technical methods are often limited to temperature measurement of general stationary solids; non-contact direct thermal imaging can measure the temperature of molten steel with an accuracy of about 2 degrees; thermocouples can directly and accurately measure the temperature and its changes at a certain point in space; indirect measurement +Analysis and calculation can get the accuracy range recognized by engineering. But for high-precision temperature measurement, especially for those who measure the temperature of moving objects, it is di...

AI Technical Summary

Problems solved by technology

However, these technical methods are often limited to temperature measurement of general stationary solids; non-contact direct thermal imaging can measure the temperature of molten steel with an accuracy of about 2 degrees; thermocouples can directly and accurately measure the temperature and its changes at a certain point in space; indirect measurement +Analysis and calculation can get the accuracy range recognized by engineering

But for high-precision temperature measurement, especially for temperature measurement of moving objects, it is difficult to meet the requirements

High-speed turning to measure the temperature of a certain point of the workpiece, the temperature change of the designated point of the brake pad in the high-speed rail brake, etc., lack of effective methods for accurate measurement

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