Archive > Volume 37 Issue 1 > 2009,37(1):93-96 Prev Next

MultiChannel Method for Measuring Wind Speed

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    Abstract:
    The wind speed measurement at automatic weather stations usually adopts only the singlechannel acquiring and processing circuit. In order to achieve the multichannel simultaneous wind speed measurement, the multichannel measurement of wind speed is studied, and the characteristics of the hardware circuit design based on the interrupt controller with the software for interrupt counting are described. The 8channel simultaneous wind speed measurement can be realized with the method. The relationship between system MCU (Microprocessor Control Unit) operating speed and interruption codes is analyzed, and the longest executive time allowable for an interrupt routine is calculated. This method not only can be used to avoid the interruption count lose, and but also play a very good role of antiinterference. On the basis of the appropriate additional hardware and software optimization, it can be extended to 16channel simultaneous wind speed measurement. The hardware schematic chart and some source codes are given. This measurement method is successfully put to use in the MultiChannel Wind Observing System developed by the Guangdong Atmospheric Detection Technology Center, as well as in other institutions across China, and the trial application shows that it is feasible and practical.

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External LinksChina Meteorological AdministrationCMA Meteorological Observation CentreChinese Academy of Meteorological SciencesBeijing Meteorological ServiceNational Satellite Meteorological Center
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