Functional safety system using three dimensional sensing and dynamic digital twin
US11675329B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 2021 |
| Grant date | Jun 13, 2023 |
| Priority date | — |
| Expiry date | Aug 1, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F30/10
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A functional safety system performs safety analysis on three-dimensional point cloud data measured by a time-of-flight (TOF) sensor that monitors a hazardous industrial area that includes an automation system. To reduce the amount of point cloud data to be analyzed for hazardous conditions, the safety system executes a real-time emulation of the automation system using a digital twin and live controller data read from an industrial controller that monitors and controls the automation system. The safety system generates simulated, or shadow, point cloud data based on the emulation and subtracts this simulate point cloud data from the measured point cloud data received from the TOF sensor. This removes portions of the point cloud data corresponding to known or expected elements within the monitored area. Any remaining entities detected in the reduced point cloud data can be further analyzed for safety concerns.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.