The electricity meter value image detection system and the comparison of algorithms based on FPGA

• 1、Jiangsu Key Laboratory of Meteorological Observation and Information Processing, Department of Electronic and Information Engineering, Nanjing University of Information & Science Technology, Nanjing 210044, China

Abstract：Due to the limitations of the actual use of the environment, the collection of electricity meter value is generally collected manually. Due to the inconvenience, danger and high cost of transcription, it has certain limitations when used. Based on this background, this design is based on FPGA-based electricity meter value image camera acquisition and Sobel edge detection processing, in order to achieve high-speed and real-time electricity meter value acquisition and display. This design is based on the ALTERA FPGA EP4CE10 development board, with the ALTERA EP4CE10 chip as the main control chip, which realizes the extraction of the electricity meter value based on the Sobel operator, analyzes the extraction effect and the extraction accuracy under different conditions, and the extraction accuracy is respectively compared with the commonly used other edge detection algorithms. The experiment results show that this processing system can realize rapid automatic acquisition and edge detection of the electricity meter value, comparing and analyzing, and make values clear.

Keywords： electricity meter value edge detection FPGA Sobel