Multi-channel electronic transformer data reception and decimation filtering

Process level digital signal processing module's function is to complete the multi-channel electronic transformer data reception and decimation filtering, the paper discusses a follow IEC60044-8 standard combined unit to achieve synchronization of the new method to analyze the implementation of efficient decimation  Voltage stabilizer , using VHDL language programming and applied to the FPGA, FPGA high integration, flexible programming features, ensure the system's real-time and  electric meter . In the process layer coding module, in accordance with the requirements of the standard IEC60044-8 data after adding the extracted header, CRC checksum complete set of frames, then the complete data frame Manchester encoded  Air circuit breaker  the fiber to the spacer layer, the paper encoding module circuits were designed in detail and compared. The spacer layer, based on all-digital phase-locked loop technology, using Manchester code itself has a wealth of information bit timing characteristics of the design of the decoding circuit module, the realization of high-speed data stream reception and a synchronous clock signal extracted from the data decoding, and finally split frame check.