VisionHub has a network based architecture
that gives it numerous advantages over traditional PC based vision system architectures.
The network architecture applies both to how VisionHub controls and interacts with its
internal components and the outside world. VisionHub advantages including:
- Simplified and standardized cabling between components.
- Eliminates the need for specialized frame grabber hardware and software drivers.
- Dynamic configuration of components
- Eliminates the need for dedicated PC monitor, keyboard, and mouse.
- Remote diagnosis and monitoring of system operation
The network components of a VisionHub system consist of:
- Factory hardened controller
- Smart camera sensors
The VisionHub uses Ethernet to communicate with smart sensors and robot controllers.
The number of individual components that can be physically supported is essentially
open-ended. Cycle time and data transfers become the primary limiting factors.
The smart camera sensors provide raw, 2D feature locations (hole centers, end points,
lines, intersection points, and contours) that get converted into 3D vectors in the
VisionHub controller. The VisionHub uses these 3D vectors, along with calibration
information for each sensor and a part model to generate the six-degrees of freedom part
position offset from its nominal position. The part position offset computation allows
redundancy and side constraints.
An important point regarding VisionHub components is that no specific brand, or model
of equipment is critical to its operation. VisionHub has been designed to use
interchangeable hardware components so that its success is not dependent on any specific
make or model. This allows vision to take advantage of improvements and technical
innovations in the components it uses.
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