Fig. 1. Structure of intelligent meter reading system

Fig. 2. Structure diagram and physical circuit board of image acquisition terminal

Fig. 3. Comparison of lighting module design

Fig. 4. Air302 workflow

Fig. 5. AT32 workflow

Fig. 6. Reading recognition method flow

Fig. 7. CNN structure used in this method

Fig. 8. Example images containing special double half-characters

Fig. 9. Convergence curves for CNN model training

Fig. 10. Grad-CAM heatmap

Fig. 11. Current waveform of single duty cycle

Fig. 12. Meter reading management platform