Thermal type wind speed sensor structure with zero point calibration function, and calibration method thereof
A wind speed sensor and zero point calibration technology, which is applied in the testing/calibration of speed/acceleration/shock measurement equipment, instruments, speed/acceleration/shock measurement, etc., can solve the problems of cumbersome sensor compensation and avoid the influence of zero point drift, packaging Convenience and efficiency-enhancing effects
Active Publication Date: 2015-10-14
SOUTHEAST UNIV
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[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a thermal wind speed sensor structure and calibration method that can perform zero point calibration online. The structure adjusts the output of the sensor by adding a heating structure to the sensor to achieve The purpose of detecting the real-time zero point avoids the cumbersome compensation problem of the sensor
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[0013] The present invention will be further described below in conjunction with the accompanying drawings.
[0014] Such as figure 1 Shown is a thermal wind speed sensor structure with a zero point calibration function, including a circular ceramic substrate 1, a heating element 2 is arranged at the center of the back of the circular ceramic substrate 1, a first temperature measuring sensor 31 and a second measuring sensor The temperature sensors 32 are symmetrically distributed on the back of the circular ceramic substrate 1 with the heating element 2 as the center, and the first heating element 41 and the second heating element 42 are symmetrically distributed on the front of the circular ceramic substrate 1 with the heating element 2 as the center; The first heating element 41 is connected with the first lead pad 71 on the back side of the circular ceramic substrate 1 through the first wire 51 and the first through hole 61, and the second heating element 42 is connected wi...
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The invention discloses a thermal type wind speed sensor structure with a zero point calibration function, and a calibration method thereof. A wind sense surface of a thermal type wind speed sensor is provided with two heating parts. When calibration is needed, the heating parts are made to work and then temperature difference signals of two opposite directions can be obtained, and a zero point of a current environment can be obtained by averaging the two opposite temperature difference signals through arithmetic. The thermal type wind speed sensor structure is simple in structure and convenient to package. The detection and calibration time of the thermal type wind speed sensor is greatly reduced.
Description
technical field [0001] The invention relates to a thermal wind speed sensor structure and a calibration method with a zero point calibration function. Background technique [0002] Wind speed and wind direction are very important parameters to reflect meteorological conditions, and have 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. As we all know, typical thermal anemometers cannot be completely symmetrical due to process and packaging problems. Therefore, the problem of zero drift has always been a major obstacle hindering the improvement of the accuracy and sensitivity of thermal anemometers. The general method is to measure the relationship between the change of ambient temperature and the wind speed, and use a look-up table or empirical formula to calibrate. The problem with this is that a large...
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Inventor 秦明叶一舟陈蓓朱雁青黄庆安
Owner SOUTHEAST UNIV