Electrical panel display OCR reading
Switchboards and MCCs are full of digital panel meters, protection relays and generator controllers showing voltage, current and energy on seven-segment or LCD displays. A camera reads the display and the cloud model records the values.
THE PROBLEM
Values on the door, no port on the back
Many older panel meters show voltage, current, power factor and kWh but have no communication port, or have one that was never wired. Opening a live switchboard to add CTs or communication cabling needs a shutdown, a permit and an electrician, and the work is often scheduled for the next annual outage.
Meanwhile the facility team still needs the numbers: daily kWh for energy reports, load current to check headroom before adding equipment, and generator hours and voltage after a power failure.
A camera mounted outside the live parts reads the display through the panel door or window, so the switchboard stays closed.
HOW WE SET IT UP
Reading displays from outside the live zone
Clearance and access first
We agree the mounting position with your electrical team so the camera stays outside required clearances and never blocks switching, isolation or inspection.
Optical check of each display
Seven-segment LEDs, backlit LCDs and reflective LCDs behave differently in a photo. We validate each display type for glare, viewing angle and backlight timing.
Scrolling displays handled
Some meters cycle through pages. We set capture timing so the right parameter is on screen, or read the page label along with the value.
Energy data without opening the panel
Readings flow into the same reports as the rest of your energy data. Where a permanent metering upgrade makes sense later, our energy metering team can plan it.
AT A GLANCE
Panel display reading in brief
- What is measured
- Displayed electrical values such as voltage, current, power factor and kWh
- Display types
- Seven-segment LED and LCD displays, validated per meter
- Hardware
- Vision AI optical meter reader on a mounting plate outside the live parts
- Installation
- Position agreed with your electrical team to keep the required clearances
- Power
- Battery or external power
- Data
- MQTT over TLS 1.2 to RIOD Live or your own server, PDF and Excel exports
- Validation
- Optical check per display, accuracy confirmed during the pilot
FAQ
Questions buyers ask us
Can a camera read a digital panel meter?
Yes. Seven-segment and LCD displays are within what the model reads. We validate each display type for glare and viewing angle before rollout.
Do we need a shutdown to install it?
The camera is mounted outside the live parts and reads the display through the door or window, so installation usually needs no shutdown. The position is agreed with your electrical team.
What about meters that scroll through several values?
We time the captures to the page you need, or read the page label with the value. This is set up and checked during the pilot.
Is this better than a Modbus energy meter?
Each suits a different job. Camera reading gets data from existing meters without opening the panel, while a Modbus meter suits permanent, high-frequency metering. Many sites use both.
Panel meters you need to log?
Send us photos of the displays and the panel doors. We will check the optics and plan the mounting with your electrical team.