【摘要】 讨论电容式传感器的原理、电容频率转换电路、宽范围精确测量频率量的多周期测量法 ,及利用DS182 0测量温度和用单片机进行温度补偿的方法。更多还原

【Abstract】 The paper discusses the design of a intelligent liquid lever measurement instrument with capacitive sensor. It uses C f circuit to complete the conversion of the signal of transducer and uses multi periods to measure frequence accurately. It also offers the way to compensate the error made by influence of temperature.更多还原