Thermal wind speed sensor structure and wind speed and direction determination method based on time-delay measurement

Abstract

The invention discloses a thermal wind speed sensor structure and a wind speed and direction measurement method based on time-delay measurement. The thermal wind speed sensor structure includes a substrate. Assuming that an XOY rectangular coordinate system is established on the upper surface of the substrate, a groove is set at the origin O. , a pulse heat source is set in the groove; a set of temperature measurement points are respectively set in the X-axis positive direction, the X-axis negative direction, the Y-axis positive direction and the Y-axis negative direction, each group of temperature measurement points includes two temperature measurement points, respectively Denoted as the first temperature measurement point and the second temperature measurement point, the four first temperature measurement points are at the same distance from the origin O, and the four second temperature measurement points are at the same distance from the origin O, and set at each temperature measurement point a temperature sensor. The wind speed and wind direction can be measured by measuring the time difference of the temperature sensor receiving the temperature signal, which can avoid the influence of heat source and ambient temperature on the measurement, and has the advantages of high accuracy, strong anti-interference ability, low power consumption, and ultra-miniaturization.

Description

technical field [0001] The invention relates to a thermal wind speed and direction sensor structure and a wind speed and direction measurement method based on pulse heating and time delay measurement. The wind speed and direction measurement is realized by measuring the time delay between two temperature sensor signals. Background technique [0002] Wind speed and wind direction are very important parameters to reflect environmental meteorological information. The detection of wind speed and wind direction has an important impact on environmental monitoring, air conditioning and industrial and agricultural production. Therefore, it is of great practical significance to quickly and accurately measure wind speed and wind direction. Such sensors generally include traditional wind cup and wind vane structures, ultrasonic wind speed sensors and thermal wind speed sensors, etc. Traditional wind cups and wind vanes have large structures, generally tens of centimeters or more, and t...

AI Technical Summary

Problems solved by technology

However, since this type of sensor realizes wind speed measurement by measuring the principle of thermal field or heat loss, the temperature drift effect and zero point drift are relatively large, and the sensor needs to be continuously heated, and the power consumption is relatively large

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