| 电子电度表基本原理 |
| 添加时间：2019/9/23 14:22:32 浏览次数： |
| 电子式电度表是利用电子电路/芯片来测量电能； Electronic watt-hour meter uses electronic circuit/chip to measure electric energy. 用分压电阻或电压互感器将电压信号变成可用于电子测量的小信号,用分流器或电流互感器将电流信号变成可用于电子测量的小信号,利用专用的电能测量芯片将变换好的电压、电流信号进行模拟或数字乘法,并对电能进行累计,然后输出频率与电能成正比的脉冲信号； The voltage signal is transformed into a small signal which can be used for electronic measurement by piezoresistor or voltage transformer, the current signal is transformed into a small signal which can be used for electronic measurement by shunt or current transformer, and the transformed voltage and current signal is analogized or multiplied by a dedicated power measurement chip, and the electric energy is accumulated. The output frequency is proportional to the electric energy. 脉冲信号驱动步进马达带动机械计度器显示,或送微计算机处理后进行数码显示。 Pulse signal drives stepper motor to drive mechanical meter display, or sends it to a computer for digital display after processing. |
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