Tinyml Digital Counter for Electric Metering System

The repo contains the codebase for building and deployment of computer vision solution for digitalizing electric meters.

Introduction

Requirement

• Software
  • Edge Impulse
• Hardware
  • Openmv Camera H7 Plus
  • Openmv Wifi Shield

Data Collection

Run the data collection script data_collection_img.py. The script captures images every snapshot_interval.

Data Processing

The captured data is further processed to obtain each digit in each sample image using the following notebook.

Training

The cropped images are uploaded the Edge Impulse and a computer vision model was built to recongize digits.

Deployment

To use the inference script, provide the following details in the secret.py:

user = "" # MQTT username 
password = "" # MQTT password
SSID = ""  # Network SSID
KEY = ""  # Network key
server = "" # MQTT server

Run the deployment script main.py. To perform inference.

Demo

Screen Scraping in Action

Demo video

Future Works

• Build lighting system for obtaining reading at night
• Deep sleep and energy saving mode
• Alerting system for notification