本文提出一种用VFC(电压-频率变换器)进行模数转换的气象参数和温度脉动测量系统.系统安装在云南天文台高美古观测站一27 m高铁塔上，包括三层金属丝温度脉动传感器和温度、湿度、气压、风速、风向传感器.用计算机选通多路开关，8253计数器对脉冲信号计数，实时测量和显示数据.成本低，能保证长距离数据采集的精度.
A meteorological parameter and atmospheric turbulence measurement system was described in this paper. A/D conversion was done by VFC (Voltage Frequency Changer). The system has been implemented at a 27 m tower in Gaomeigu Yunnan Astronomical Observatory,that includes three levels fast-response temperature sensors and two slow-response temperature sensors, a humidity sensor, a pressure sensor, a propeller-vane anemometer, Computer selects input channels and pulse signal is counted by 8253 counter, so the system cost is low and the measuring precision of long distance sampling signal can be ensured.
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