Emre Ceylan
What is an industrial camera is the question behind “can we just use a webcam?” An industrial camera is built for external trigger, fixed optics, and long duty on a line. A webcam or phone streams a preview; a line camera locks the frame to an encoder or photoelectric.
Lighting is in industrial camera lighting selection; trigger in conveyor camera triggering and encoder.
What is an industrial camera?
The job is not a pretty picture. It is a repeatable frame. The same part, light and trigger should keep pixel shift in the millisecond range. Output usually goes to a PC or an embedded board over GigE, USB3 or MIPI. On the board side, power, isolation and I/O matter as much as the camera body; at Revan that sits under machine vision as a trigger and interface card.
Layers are in what is machine vision; the window in what is ROI in machine vision.
Why it matters
- External trigger: the frame locks to line rhythm
- Fixed optics: autofocus does not break repeatability
- Industrial connector: lock holds in dust and vibration
- Driver lifetime: plant software expects the same interface for years
How it works
An encoder or photocell trigger input locks the frame. Exposure and gain stay fixed; “auto” modes should stay exceptions. If ROI is applied before capture, bandwidth drops. The light strobe opens in the same millisecond.
Typical uses
- Missing part / screw present-absent
- Label present-absent and code
- Measure and silhouette
- Fill level
- Closed-booth stations
Common mistakes
Picking resolution “as high as possible” inflates bandwidth and cycle time. Set ROI and lens first, megapixels second. If light is weak, fix lighting before swapping the camera. Housing IP rating and locking connectors last longer than a webcam dongle. “Just plug the camera” is not delivery; driver and SDK are part of it.
Outer frame: Wikipedia — machine vision.
Design checklist
- Is trigger input and latency measured?
- Does the lens match sensor size and distance?
- Does distance decide GigE vs USB3?
- Is there a strobe sync pin?
- Are IP class and locking connector fit for the line?
FAQ
Industrial camera vs webcam?
Trigger input, fixed exposure, industrial connectors and driver lifetime. A webcam is a continuous stream; a line camera locks frame by frame.
GigE or USB3?
Cable length and a switch favour GigE. Short runs, one PC and high bandwidth favour USB3.
Is a smart camera enough?
For a closed check (present/absent, code), yes. Multiple ROIs, custom metrology or plant software usually want an external processor plus an industrial camera.
Is the lens chosen with the camera?
Yes. Sensor size and working distance set the lens. The wrong lens wastes high resolution.
Results
What is an industrial camera? A triggerable image source locked to line rhythm. Decision quality comes with light, trigger and the board.
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