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SiAlCN wireless passive temperature sensor loaded with patch antenna and preparation method

A technology of temperature sensor and patch antenna, which is applied in the direction of antenna, thermometer, and thermometer with electric/magnetic elements that are directly sensitive to heat, etc. It can solve the problem of low working temperature, short test distance of wireless passive sensors, and difficult measurement methods. And other issues

Inactive Publication Date: 2018-07-10
XIAMEN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problems of existing temperature sensors, such as the low operating temperature of temperature sensitive elements, the difficulty of meeting the requirements of harsh environments such as high temperature corrosion by wired active measurement methods, and the relatively short test distance of existing wireless passive sensors, etc., to provide A SiAlCN wireless passive temperature sensor loaded with a patch antenna used in harsh environments such as high temperature corrosion and its preparation method

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  • SiAlCN wireless passive temperature sensor loaded with patch antenna and preparation method
  • SiAlCN wireless passive temperature sensor loaded with patch antenna and preparation method
  • SiAlCN wireless passive temperature sensor loaded with patch antenna and preparation method

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Embodiment Construction

[0042] The present invention will be further described below by means of embodiments in conjunction with the accompanying drawings.

[0043] The preparation method of the SiAlCN wireless passive temperature sensor loaded with patch antenna comprises the following steps:

[0044] 1. Mix polysilazane and 0.3 g of aluminum sec-butoxide in a mass ratio of 90:10, and stir the mixture on a magnetic stirrer under the protection of nitrogen atmosphere for 24 hours at a temperature of 80°C. A light yellow precursor mixture was obtained.

[0045] 2. Pour the mixture into a tin foil box, put it into a tube furnace, and then raise the temperature to 160°C for 4 hours to carry out thermal crosslinking. The whole process is protected by a nitrogen atmosphere, and naturally cooled to room temperature to obtain a block precursor.

[0046] 3. Crush the obtained massive precursor body, and grind it into powder with a ball mill, with a particle diameter of about 1 μm. The frequency of the vibr...

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Abstract

The invention relates to a SiAlCN wireless passive temperature sensor loaded with a patch antenna and a preparation method of the SiAlCN wireless passive temperature sensor and belongs to the temperature sensor. The sensor is provided with a ceramic temperature sensitive component; a metal layer is formed on the surface of the ceramic temperature sensitive component, so that a resonant cavity canbe formed; a slit is formed in the metal layer on the upper surface of the resonant cavity; and a ceramic-based patch antenna is arranged above the resonant cavity. According to the preparation methodof the SiAlCN wireless passive temperature sensor provided with the patch antenna, a cylindrical ceramic temperature sensitive component is prepared; a cylindrical resonant cavity is prepared; a ceramic substrate patch antenna is prepared; and a wireless passive temperature sensor is prepared. According to the wireless passive temperature sensor, SiAlCN is adopted as a temperature sensitive component; a high temperature resistant metal layer is plated on the surface of the temperature sensitive component, so that a resonant cavity can be formed; a slit is formed in the metal layer on the upper surface of the resonant cavity; a high temperature resistant ceramic-based patch antenna is loaded above the resonant cavity; the SiAlCN ceramic temperature sensitive component can withstand high temperature above 1400 DEG C; and the ceramic substrate and metal patch of the ceramic-based high temperature resistant patch antenna loaded above the resonant cavity can withstand temperature above 1000 DEG C.

Description

technical field [0001] The invention relates to a temperature sensor, in particular to a SiAlCN wireless passive temperature sensor loaded with a patch antenna and a preparation method thereof. Background technique [0002] The internal environment of the aero-engine is harsh and the working temperature is extremely high (>1000°C). Traditional limited active temperature sensors cannot work normally in the high-pressure compressor section and combustion chamber of aero-engines. The lack of temperature data in these parts seriously limits the development of aero-engine technology. At the same time, the aero-engine is a rotating machine, and the installation method of wired active sensors is usually difficult to meet the test requirements. The currently proposed wireless passive sensors have problems such as low operating temperature and short test distance (10-20mm). Therefore, there is an urgent need to develop a high-temperature resistant wireless passive temperature se...

Claims

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Application Information

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IPC IPC(8): G01K7/00H01Q1/22C04B35/58C04B35/622C04B41/88C04B41/00C04B41/51
CPCG01K7/00C04B35/58C04B35/622C04B41/009C04B41/5122C04B41/88C04B2235/48C04B2235/483H01Q1/225C04B41/4564C04B41/4529
Inventor 余煜玺徐杰伞海生张志昊
Owner XIAMEN UNIV
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