Wireless temperature measurement gun for metal solution and working method thereof

Abstract

The invention relates to a wireless temperature measurement gun for metal solution and a working method thereof. The wireless temperature measurement gun comprises a temperature measurement control circuit and a temperature display control circuit. The temperature measurement control circuit comprises a temperature measurement microprocessor, a temperature measurement control circuit, an A / D switching circuit and a power switch control circuit. The temperature display control circuit comprises a display microprocessor, a temperature measurement state setting switch and a display apparatus. The working method comprises a step of controlling the power switch, a step of controlling the temperature measurement, and a step of correcting thermocouple measurement accuracy. The beneficial effects of the invention are that the invention does not use compensation lead any more, has high measurement accuracy and reduces production cost; the invention can automatically cut off the electric source in a non-operating state, so that the power consumption in the non-operating state is zero, in addition, the invention prolongs the service life of battery and reduces the times of replacing or charging the battery; the invention does not use an artificial circuit to correct thermocouple measurement accuracy, so as to avoid the error of a potentiometer due to vibration; and the invention can set the test parameters according to the user requirements, and is simply structured and conveniently operated.

Description

technical field [0001] The invention belongs to thermal engineering temperature measuring devices for metallurgical furnaces, in particular to a wireless temperature measuring gun for metal solution and its working method. Background technique [0002] At present, the temperature measuring gun and the temperature measuring signal processing display for the temperature measurement of the smelting metal solution are connected by expensive compensation wires. The problems brought about are inconvenient operation, high cost and inaccurate measurement accuracy. Due to the complex working conditions of the measurement site, it is easy to be damaged. The compensation wire needs to be replaced frequently, which is a great waste of resources. According to statistics, a medium-sized steel factory needs to spend hundreds of thousands or even millions of yuan to replace the compensation wire every year; at the same time, the original temperature measuring gun has artificial Judging the ...

AI Technical Summary

Problems solved by technology

[0002] At present, the temperature measuring gun and the temperature measuring signal processing display for the temperature measurement of the smelting metal solution are connected by expensive compensation wires. The problems brought about are inconvenient operation, high cost and inaccurate measurement accuracy. Due to the complex working conditions of the measurement site, it is easy to be damaged. The compensation wire needs to be replaced frequently, which is a great waste of resources. According to statistics, a medium-sized steel factory needs to spend hundreds of thousands or even millions of yuan to replace the compensation wire every year; at the same time, the original temperature measuring gun has artificial Judging the effective temperature measurement point, this method has visual fatigue and inaccurate work mistakes; with the rapid development of science and technology, it is possible to connect the temperature measurement gun to the temperature measurement signal processing display through a wireless connection; but using this In the method, in order to ensure the normal operation of the temperature measuring gun, the temperature measuring gun must be equipped with a battery. The continuous use of the temperature measuring gun requires frequent replacement of the battery, which is inconvenient for use. The wake-up circuit is still in the state of using the power supply to consume electric energy; in order to measure accurately in use, it is often necessary to use standard thermocouple potential calibration temperature measurement signal processing to ensure temperature measurement accuracy. Traditional thermocouple measurement accuracy calibration uses analog circuit calibration , in the calibration, it is necessary to adjust the potentiometer of the control circuit in the temperature measuring gun to correct it. During use, due to vibration, the resistance value of the potentiometer will change slightly. Due to this small change, the correction potential will be changed, and measurement errors will affect the measurement. temperature measurement accuracy

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