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An AC self-heating wind speed and direction sensor and its measuring method

A wind speed sensor, wind speed and wind direction technology, applied in the direction of speed/acceleration/shock measurement, fluid speed measurement using thermal variables, measuring devices, etc., can solve the problems of wind speed sensor bulky, high power consumption, etc., to achieve simple structure, The effect of low power consumption and easy measurement

Active Publication Date: 2019-12-03
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these wind speed sensors cannot meet the requirements of mobile and portable applications due to their bulky size and high power consumption.

Method used

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  • An AC self-heating wind speed and direction sensor and its measuring method
  • An AC self-heating wind speed and direction sensor and its measuring method

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Embodiment Construction

[0013] The present invention will be further explained below in conjunction with the accompanying drawings.

[0014] Such as figure 1 , 2 As shown, an AC self-heating wind speed and direction sensor includes a gallium arsenide substrate 3 and four AC self-heating wind speed sensors grown on the surface of the gallium arsenide substrate 3 and distributed orthogonally. Wherein, each AC self-heating wind speed sensor includes a heating resistor 1 and a semiconductor thermocouple 2 formed on the surface of the gallium arsenide substrate 3 by processes such as sputtering and lift-off, and the cross-section of the heating resistor 1 and the semiconductor thermocouple 2 The dimensions are consistent, and the length ratio of the semiconductor thermocouple 2 and the heating resistor 1 is 15-20:1. In this embodiment, the heating resistor 1 is a square structure with a side length of 10 mm, and the length of the heating resistor 1 is 150 mm. One end of the heating resistor 1 is attach...

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Abstract

The invention discloses an alternating current self-heating type wind speed and wind direction sensor and a measurement method using the same. The sensor comprises a gallium arsenide substrate, a heating resistor which grows on the surface of the gallium arsenide substrate and is used for generating heat, and a semiconductor thermocouple which is used for sensing a temperature difference. Four wind speed sensors are arrayed orthogonall to form the alternating current self-heating type wind speed and wind direction sensor. According to the detection method, the heating resistor generates heat; when wind blows by, the temperature difference formed between the cold end and the hot end of the semiconductor thermocouple can be changed to change the direct current voltage generated at the cold and hot ends; simultaneous detection on the wind speed and the wind direction is finally realized by detecting four direct current voltages.

Description

technical field [0001] The invention provides a wind speed and wind direction sensor and a measuring method thereof, belonging to the technical field of micro-electro-mechanical systems (MEMS). Background technique [0002] The detection of wind speed and direction is closely related to people's daily life, and the information provided by wind speed and direction detection plays a vital role in many fields such as industrial and agricultural production, aerospace sounding, energy development, transportation and tourism, weather forecast and environmental protection. role. In the early days, the detection of wind speed and direction was mainly realized by mechanical wind cups and wind vanes, and then wind speed detection systems based on the ultrasonic principle and the Doppler principle appeared respectively. However, these wind speed sensors cannot meet the requirements of mobile and portable applications due to their bulky size and high power consumption. The development...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01P5/12G01P13/02
Inventor 易真翔秦明黄庆安
Owner SOUTHEAST UNIV