Image Recognition System of Pointer Meter in Substation
Guiliang Li, Biao Tang, Bo Li, Xinyuan Luo, Yong Liang · 2020
Instrument monitoring and automatic analysis of instrument reading in substations place priority in the substation digitization process. In this paper, an image recognition system of the pointer instrument in the substation is designed. The embedded technology is used in the image acquisition module of this system to realize image collection and ensure the quality of acquired images. The template matching method is applied in the image analysis model to correct the position of the instrument dial, and the center projection method is designed to automatically recognize the indicator pointer scale. The experimental results show that the system can meet the image quality requirements in field operations. The absolute error of the analytical result is less than 0.004 in the pointer meter reading recognition algorithm, which meets the technical standards of the powering industry.