Self-powered temperature sensor based on thermoelectric effect and preparation method and application thereof

A technology of temperature sensor and thermoelectric effect, applied in the manufacture/processing of thermoelectric devices, thermoelectric devices using only Peltier or Seebeck effect, thermoelectric device components, etc., can solve the problems of lack of patterned integrated design research, etc. The effect of transmission and artificial intelligence, fast heat dissipation and high stability

Pending Publication Date: 2022-04-01
HENAN AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although many methods and mechanisms for improving the performance of this material have been explored, there is a lack of research on the patterned integrated design of its material, and it has not been applied to soil temperature sensors based on the thermoelectric effect.

Method used

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  • Self-powered temperature sensor based on thermoelectric effect and preparation method and application thereof
  • Self-powered temperature sensor based on thermoelectric effect and preparation method and application thereof
  • Self-powered temperature sensor based on thermoelectric effect and preparation method and application thereof

Examples

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preparation example Construction

[0045] The preparation method of the self-powered temperature sensor based on the thermoelectric effect of the present invention includes the preparation method of the thermoelectric module, and the flow chart of the preparation method of the thermoelectric module is as follows: image 3 shown, including the following steps:

[0046] (1) Obtain the best optimized process parameters of the thermoelectric module, the core of the self-powered temperature sensor:

[0047] The optimal process parameters of the thermoelectric module can be obtained by the method of ANSYS finite element simulation software, and the optimal process parameters of the thermoelectric module can also be obtained by other finite element methods such as comsol. The present invention preferably adopts the obtaining method of ANSYS finite element simulation software.

[0048] The thermoelectric module model based on the thermoelectric effect is established by ANSYS finite element simulation software. During ...

Embodiment 1

[0057] This embodiment provides a thermoelectric effect-based self-powered temperature sensor for a greenhouse. The design route is as follows: the thermoelectric legs are N-type bismuth telluride film and P-type antimony telluride film, the film electrode is made of copper, and the base plate is made of polyimide amine. The substrate thickness and inner electrode size of the temperature sensor based on the thermoelectric effect were optimized by ANSYS finite element simulation software, and the optimal substrate thickness and inner electrode size of the temperature sensor based on bismuth telluride-based thermoelectric materials were obtained. The preparation of thin film thermoelectric modules is realized by patterning deposition of bismuth telluride, antimony telluride and copper thin film electrodes by magnetron technology. The preparation of self-powered temperature sensor in greenhouse can realize sensitive and stable self-powered real-time monitoring of soil temperature...

Embodiment 2

[0077] The only difference between Example 2 and Example 1 is that the thickness of the base plate is different, and the thickness of the base plate is designed to be 0.5 mm and 1 mm respectively.

[0078] Image 6 The temperature distribution cloud map of the soil temperature sensor with different base plate thicknesses shows that the thermoelectric module with a smaller base plate thickness can achieve a larger temperature difference establishment.

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Abstract

The invention discloses a self-powered temperature sensor based on a thermoelectric effect and a preparation method and application thereof, and aims to provide a temperature sensor which is based on a high-performance bismuth telluride-based thin film thermoelectric material and is high in sensitivity and high in flexibility, a preparation method of the temperature sensor and application of the temperature sensor in the aspect of monitoring the temperature of greenhouse soil. The temperature sensor comprises a thermoelectric module, the thermoelectric module comprises a substrate plate, the substrate plate is provided with N-type bismuth telluride films and P-type antimony telluride films which are distributed in a scattering shape, the N-type bismuth telluride films and the P-type antimony telluride films are arranged at intervals, the N-type bismuth telluride films and the P-type antimony telluride films are connected in series through film electrodes to integrate multiple pairs of P-N junction thermoelectric legs, and the P-N junction thermoelectric legs are connected with the substrate plate. A central hollow hole is formed in an inner ring formed along the thin film electrode on the base plate, the hollow position at the central hollow hole and the thin film electrode of the inner ring are packaged through a high heat conduction material, and a heat conduction packaging layer is formed in a middle area. The sensor has the advantages of high sensitivity, strong flexibility and accurate monitoring capability.

Description

technical field [0001] The invention belongs to the technical field of self-powered temperature sensors, and more particularly relates to a self-powered temperature sensor based on thermoelectric effect, a preparation method thereof, and its application in monitoring soil temperature in agricultural greenhouses. Background technique [0002] With the rapid development of smart agriculture, the ability to provide sustainable and stable self-powered sensing technology has attracted widespread attention. If the soil temperature in the greenhouse is too high or too low, it will affect the normal growth of crops. If the soil temperature in the greenhouse cannot be monitored in time, the crops may wither or the yield is too low, which will bring huge losses to farmers. Therefore, the effective soil temperature in the greenhouse is effective. Monitoring is one of the important basis for judging the normal growth of crops. [0003] At present, people manage the temperature and soil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L35/02H01L35/04H01L35/16H01L35/32H01L35/34G01K1/02
Inventor 王亚玲谭明刘小标张梦娇王静贾树恒李辉李聪
Owner HENAN AGRICULTURAL UNIVERSITY
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