超声波风速风向仪的研制

The design of the ultrasonic anemometer

超声波风速风向的设计仪国内少有报道。本系统采用时差法原理实现对风速风向的测量,利用单片机PIC18F4580为控制核心,构成高速计时模块,利用多重阈值比较电路,结合软件设计实现发射时间范围控制和可靠性检验。实验结果表明系统在风速30m/s以下与参照曲线拟合程度较高,实现了用时差法超声波测量风速风向的目的,具有一定实用价值。

The design of ultrasonic anemometer is rarely reported in China. It is presented the measurement principles of the travel time difference method of the ultrasonic anemometer in this paper. PIC18F4580 is used as high speed counter and core of system. It achieves on the travel time rang control and reliability analysis through software and the multi-threshold module. The results of ex- periment confirm that the ultrasonic anemometer achieves the design object when the wind speed is below 30m/s.