Design method of digital electric energy metering handheld tester with model self-recognition function

The invention discloses a model self-recognition digital electric energy metering handheld tester design method, and the method employs a ZYNQ 7020 chip of the Sialism, and the ZYNQ 7020 chip is a dual-processor architecture of FPGA + ARM (Field Programmable Gate Array + Advanced RISC Machines); real-time processing of sampling value data can be achieved, and meanwhile man-machine interaction and battery power supply of an upper computer are taken into consideration. AMP double operating systems are adopted for software development, and bottom software and application layer software can be separated in function, so that later function addition and software management are facilitated. According to the invention, a multi-optical-port digital signal forwarding mechanism is adopted, and the series-parallel connection function of current and voltage signals in the real load test process is realized. When virtual load testing is adopted, the automatic testing function of digital metering can be achieved through the