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随着科学技术的飞速发展,当代各行各业使用的天平已由双盘等臂天平发展到现代的电子天平。一、电子天平原理框图如下: 当传感器加上或去除载荷时,秤盘位置发生变化,位置检测器将此变化通过PID调节器,放大器转换成线圈中电流信号,该电流信号在采样电阻R_M上转换成与载荷相应的电质信号,通过低通滤波器、模数(A/D)转换器
With the rapid development of science and technology, balances used by all walks of life have been developed from double-arm and other arm scales to modern electronic scales. First, the electronic balance principle block diagram is as follows: When the sensor plus or remove the load, the pan position changes, the position detector will change this through the PID regulator, the amplifier into a coil current signal, the current signal in the sampling resistor R_M Converted into a load corresponding to the electric signal through the low-pass filter, analog-to-digital (A / D) converter