ABSTRACT
Network monitor is usually used for intelligent switchboard, variable power distribution and energy management system, to realize the remote data acquisition and control.[1] At present, most of power parameter measurement instrument for measuring use chip and DSP chip as the core, because of these chips generally do not have the harmonic function, and poor portability, which is not conducive to further expand and upgrade;[2] while the high-end monitor integrated ADC + DSP + ARM structure, although the measuring accuracy is improved, but also increase the hardware cost and complexity, which is not conducive to the further application of digital monitor. Network monitor is designed in this paper uses ADC and ARM high accuracy combination model, a LPC2138 chip with high performance multi-resource, realize the high accurate analysis of measurement of electric parameters and real-time harmonic.
