Temperature signal detecting device

Abstract

The invention discloses a temperature signal detecting device, which comprises a temperature sensor, a control circuit and a mechanical filter. The filter is mainly composed of an energy storage portion having a rectangular parallelepiped shape and a fin portion having a sheet shape, and at least one surface of the fin portion and the energy storage portion is thermally contacted and fixed, and the energy storage portion is provided with a temperature measuring portion suitable for temperature measurement. The temperature sensor is assembled with the temperature measuring portion to detect thetemperature of the end of the temperature measuring portion. The fluid is subjected to heat treatment, the temperature distribution is not uniform, a natural convection flow field is formed under theaction of gravity, the flow of the fluid generates ultra-low frequency disturbance signals with a period as high as a magnitude of several minutes for temperature detection, an electronic filter is difficult to filter out, the detecting device of the invention can filter out the above-mentioned ultra-low frequency disturbance signals and accurately detect the temperature of the fluid, and in theprocess of applying heat treatment, influences of disturbance signals does not exist, the fluctuation of the fluid temperature is extremely small, the fluid temperature is more easier to be stabilizedin a setting value, the consumed time is short, and energy consumption is saved.

Description

technical field [0001] The invention relates to a temperature measuring device, in particular to a temperature signal detection device with the function of filtering ultra-low frequency disturbance signals applied to temperature signal detection, and belongs to the field of temperature signal detection. Background technique [0002] The fluid is subjected to heat treatment such as heating and cooling, and the temperature distribution is uneven. Under the action of gravity, a natural convection flow field is generated. There are a large number of advection, turbulence, and turbulent flow areas inside the fluid, and the temperature distribution of the fluid is uneven. Fluid flow with uneven temperature distribution generates disturbance interference signals to temperature detection, forming ultra-low frequency disturbance signals with a period of several minutes, and it is difficult for electronic filters to filter out, so that the temperature detection devices in the prior art...

AI Technical Summary

Problems solved by technology

Fluid flow with uneven temperature distribution generates disturbance interference signals to temperature detection, forming ultra-low frequency disturbance signals with a period of several minutes, and it is difficult for electronic filters to filter out, so that the temperature detection devices in the prior art cannot accurately measure During the heat treatment process, the temperature of the fluid fluctuates greatly due to the interference of the disturbance signal, and it is not easy to be stabilized at the set value, which takes a long time and increases energy consumption

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