基于 TDC-GP21高精度三维测风系统设计

摘要

According to the problem of measuring the wind speed and wind direction in a fast and ac-curate way, a 3D ultrasonic measuring system is designed by a high-precision time measuring chip TDC-GP21 and a SCM control chip MSP430F413.Three pairs of ultrasonic transducers are used to constitute the 3D arrays and the time difference method is used for measurement.In this paper, the overall structure of 3D ultrasonic measuring system, the ultrasonic driving circuit and the ultrasonic receiving circuit are designed.At the same time, the software process of wind speed and direction measurement are given.%针对快速准确测量风速和风向的问题，采用 TDC －GP21高精度时间测量芯片和MSP430F413单片机控制芯片，设计了三维超声波测风系统。利用三对超声波换能器构成三维阵列，采用时差法测量风速和风向。该文介绍了三维超声波测风系统总体结构，超声波驱动电路和超声波接收电路以及风速和风向测量的软件流程。