LabVIEW在PLC功耗高精度动态测量中的应用

为了实现对电力线载波通信(PLC)模块功耗的精确测量,解决普通功耗测量仪器误差大、操作复杂的问题,设计了基于Lab VIEW的PLC模块功耗测量系统。该系统界面友好、可操作性强、可调采样率及采样周期。文中介绍了测量系统的工作原理,详细分析了功耗的计算方法,同时对多种测量系统进行了实验比较,分析实验数据得出该系统测试数据稳定可靠、精确度高的结论。最后,对不同种类测量系统之间产生较大误差的原因进行了探讨,总结了保证高精度、高灵敏度功率测量的必要条件。

Labview dynamic measurement precision power applications in the PLC

In order to achieve the accurate measurement of PLC of power line communication (PLC), module power and solve the inaccuracy in common power measuring instruments and the complexity in operation, a PLC module power measurement system is designed based on LabVIEW that is user-friendly, highly-operable and adjustable in sampling rate and sampling period.The operating principle of the measurement system is introduced and the algorithm is analyzed in detail.Meanwhile, a variety of systems for measurement are compared to prove the high efficiency and accuracy of the current system.The causes of large errors in different types of measuring systems are later discussed and the necessary conditions to ensure high precision and sensitivity are summarized.