At present, the main schemes of Energy meter in power industry are generally based on semiconductor technology to achieve accurate measurement purposes. The Energy meter is generally used in high precision A/D converter, the voltage and current signals of power sampling and analog-to-digital conversion, and then use the high speed microprocessor for processing and data analysis, processing and sorting of digital signals, resulting in a variety of measurement data; finally, use a variety of communication interface, human-machine interface to achieve docking with various equipment for.

Energy meter is the product of sampling technology, micro processing technology, design technology and experience. It is a cross disciplinary high-tech product. According to the design and understanding and application skills, the Electric meter manufacturers realize the functions of the meter. Electric meter, now has a multi-functional, networked, intelligent and digital needs, can meet the various requirements of measurement, such as active power metering, reactive power metering, demand calculation, complex functions of power quality detection, network event records, and can be used as a communication from the station and central control station data exchange.

In the process of continuous development and upgrading of product technology of power information collection system, product requirements and product functions are constantly optimized and continuously increased to meet the increasing requirements of information management. Product technology combined the current mature Electric meter function, electromagnetic measurement technology, DSP data processing technology, industrial automatic control technology, wireless transmission technology, low voltage power line carrier communication technology, embedded real-time operating system software platform is a system of interdisciplinary technology; and high technology products are new products, both at home and abroad at present, the manufacturers technical level is at the same level, with little international well-known manufacturers in the technology and performance gap.