April 29, 2022
Visevi Robotics, a Germany-based startup that focuses on computer vision for sensing and grasping on smart robots, has announced new vision-based encoders that can perform generic angular measurement applications without any sensors on the joint. The ViseJoint offering allows for the measurement of one or more multiple joints to be performed remotely, using a computer vision software and a camera that looks onto the joints from a distance.
Multiple joints and even kinematic chains are measured simply by looking at them with a camera, Visevi said. Sensing and control works remotely, and is purely camera based. In addition, mechanical components do not need to integrate any sensor, electronics or wiring.
The system is available as a software package for any standard PC, and for many embedded systems, the company said. It connects to most standard cameras (USBVision, UVC, Ethernet), and can provide angular readings for all observed joints. Users only need to attach textured markers onto the joints, and a development kit is available to help users get started.
Applications include mechanical systems with one or more rotational joints that require angular position control, as long as remote sensing is feasible, Visevi said. This can include automation systems, in which multiple components with rotational axes may be monitored by a single camera. For the control of robot arms, especially service robots, camera-based encoders measure chains of multiple joints with a pair of markers. Camera-based encoders can also be used for calibration tasks, such as initializing a relative encoder, or as a second channel in conjunction with existing encoders.
For additional information on the new system, visit the Visevi Robotics website here.