Virtual test apparatus for thermal wind speed sensor in absence of wind tunnel

Abstract

The invention discloses a virtual test apparatus for a thermal wind speed sensor in absence of a wind tunnel. Thermal probes for precise temperature control are adopted to apply temperature difference signals directly to the surface of a sensor, thereby simulating the influence of actual wind speed. The apparatus can conveniently collect, analyze, process, display and store a lot of test data of a thermal wind speed sensor, thus providing a basis for automatic test and calibration of the thermal wind speed sensor. The advantage and technical effects of the apparatus are that: computer software and hardware resources and apparatus hardware are combined as a whole body, the great calculating processing capability of a computer and the measuring and control capability of the apparatus hardware are combined to be a system, parameter setting and data collection of test software are simple and feasible, and analysis and processing functions are flexible, so the test efficiency for the thermal wind speed sensor is greatly improved, and the test cost is reduced.

Description

technical field [0001] The invention relates to a test device for a virtual thermal wind speed sensor without a wind tunnel, which belongs to the sensor performance test technology. Background technique [0002] At present, people's dependence on meteorological information has penetrated into every corner of daily life and production. In the fields of outdoor sports, field adventures, underground work, highway road condition information monitoring and other fields, it is necessary to timely, accurately and conveniently monitor the meteorological information in a small area. Information is obtained. Among the many meteorological information affecting human life, wind is undoubtedly a very important one. Since the unevenness of wind speed is very common, there may be a large difference in wind speed between two places in the same area hundreds of meters apart. In order to detect the wind speed more accurately, the traditional expensive and bulky traditional anemometer can no...

AI Technical Summary

Problems solved by technology

In order to detect the wind speed more accurately, the traditional expensive and bulky traditional anemometer can no longer meet such demands, and the thermal wind speed and direction sensor based on MEMS technology has a series of advantages such as small size, high sensitivity and low price, especially It is suitable for the construction of large-scale sensor network nodes and the development of portable, low-cost automatic weather detection microsystems, but in the current situation, the performance detection and calibration of MEMS thermal wind speed and direction sensors need to test the output of the sensor at different wind speeds and directions , and the performance of the sensor in different working environments (such as different temperature and humidity conditions)

The traditional test method is carried out in an environment-controlled wind tunnel. The whole process lasts for a long time, and the energy consumption is very high. It is also necessary to set the ambient temperature of the sensor and record the current parameter value of the sensor at regular intervals.

In the traditional sensor detection system, these operations are all done manually, and the efficiency is relatively low. With the increase of the number of tested sensors, the manual wind tunnel test system has been unable to meet the increasing workload requirements and low energy consumption and environmental protection requirements.

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