针对扭矩测试仪的高精度和高可靠性要求，设计了一种基于AVR单片机的扭矩测试仪装置。本文主要分析了扭矩测试仪的基本组成，设计了基于ATmega128单片机为核心的扭矩测试仪的硬件电路，完成了压力信号的检测与输出控制，实现了扭矩测试装置的自动控制。硬件测试结果表明此装置压力信号控制效果较好、性能安全可靠、抗干扰性强。%Aiming at the topic of reactive power compensation in electric power grid,a reactive power compensation system is introduced based on MSP430 and TC35i,which is message transceiver module of GSM network. The design for hardware and software of the system is described briefly. It can detect voltage and current then figure out power factor,and it realizes auto-switching capacitor bank and reactive compensation according to definite control law. Meanwhile,it is used to transmit data by short message to realize the remote control auto-switching capacitor and grid parameters monitoring by using GSM signal coverage range. The whole system is stable,reliable,and simple.
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