煤矿用超声波式风速风向传感器设计

为了监测煤矿瓦斯突出事故导致的瓦斯逆流情况,应用超声波时差法原理设计了煤矿用超声波式风速风向传感器。该传感器利用超声波发射、接收的时差与风速、风向的关系,经过运算得到被测风向和风速。测试结果表明,该传感器稳定性强,测量精度高,风速测量范围为0.4~15m/s,误差不超过0.3m/s,风向测量范围为0~360°,误差不超过3°。

Design of mine-used ultrasonic transducer of wind speed and direction

In order to monitor gas countercurrent leaded by coal mine gas outburst accidence,a mine-used ultrasonic transducer of wind speed and direction was designed based on principle of ultrasonic time difference method.The relationship between the wind speed and direction and the time difference of ultrasonic transmitting and receiving is applied to operate and obtain the wind direction and speed.The testing results show that the transducer has strong stability and high measurement accuracy,wind speed measurement range is 0.4-15m/s,its error is no more than 0.3m/s and wind direction measurement range is 0-360 degree,error is no more than three degree.