A non-contact temperature parameter extraction device in an ultra-high temperature environment

Abstract

The invention relates to a non-contact temperature parameter extraction device in an ultra-high temperature environment, which includes a receiving processing unit, a connecting cable, a broadband receiving antenna, a composite structure of a rectangular dielectric resonance and a transmitting antenna; the receiving and processing unit is connected to a broadband receiving unit through a connecting cable The antenna, which is placed in an ordinary temperature environment, sends and receives broadband signals to the composite structure of rectangular dielectric resonance and transmitting antenna; the composite structure of rectangular dielectric resonance and transmitting antenna is placed in an ultra-high temperature environment, including the reference ground and the horn installed on the reference ground Shaped radiation source and dielectric layer; the dielectric constant of the dielectric layer changes with temperature, and the horn-shaped radiation source induces the dielectric constant of the dielectric layer to change and resonates and sends its resonant frequency to the broadband receiving antenna; the device has a small structural size , the temperature-sensitive extraction device can be directly placed in an ultra-high temperature environment, and the temperature parameters in an ultra-high temperature environment can be monitored in real time for a long time.

Description

technical field [0001] The invention relates to the technical field of electronic communication, in particular to a non-contact temperature parameter extraction device in an ultra-high temperature environment. Background technique [0002] With the rapid development of my country's aerospace and civil flight technology, the key components of the engine have been in an ultra-high temperature (>1000°C) environment caused by fuel and high-speed friction with the atmosphere for a long time. In the high-speed engine compartment or the aircraft turbine surface flying fast in the atmosphere, there is such a special environment formed by high temperature, and real-time monitoring of temperature parameters in high-temperature environments is of great help to improve the reliability, life and quality of the engine and aircraft. Material selection is of great significance. At the same time, it is also an essential part of its dynamical system research. Therefore, in order to enabl...

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Problems solved by technology

The first method is only suitable for environments where the temperature is lower than 600°C. In a high temperature environment exceeding 600°C, the active test device will fail or be damaged, and the parameters cannot be monitored in real time.

The temperature range applicable to the second method is generally lower than 800°C, and there are problems such as inaccurate test results and insufficient dynamic response, which also cannot meet the requirements of real-time monitoring

The preparation of the temperature sensor is relatively complicated, in which the cantilever beam structure is prepared by epitaxial monocrystalline silicon surface micromachining (MEMS), and the input of the Wheatstone bridge needs to be powered by pulsed current, so the processing technology of the traditional temperature sensitive scheme Complicated, the peak operating temperature is far below 500°C, which cannot meet the test requirements of ultra-high temperature environments

[0006] At present, there is no real-time monitoring device in China that can work in an ultra-high temperature environment above 1000 °C

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