System Structure

Structure of Vision Conveyor Tracking System

The structure of the vision conveyor tracking system is shown in the figures below.

Not to reduce the picking accuracy, you need to set the same timing for the camera to search for parts on the conveyor and for the encoder on the conveyor to latch position. It is also recommended to use a photoelectric sensor to match the timing of imaging a moving workpiece.

There are hardware trigger and software trigger as trigger methods for latching the camera image and encoder count.

Hardware trigger:

Structure that inputs from the photoelectric sensor or controller I/O to the trigger terminal of the camera and the encoder latch terminal of the PG board
Asynchronous reset mode

Software trigger:

Structure without trigger signal The work is imaged by executing the vision sequence, and the SPEL command that latches the encoder count is executed.

Vision Conveyor Tracking Structure Example 1 (using a hardware trigger)

Trigger signal that latches the camera image and encoder count is output from the controller I/O