Patent · US Active

Apparatus and method for executing a safety function

US11566750B2 · kind B2 · utility

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18Claims

0Family size

Assignee

Pilz GmbH & Co. KG · DE

Inventors

Daniel BAKOVIC · Esslingen am Neckar, DE
Juergen Pullmann · Großenhain, DE
Bernd Neuschwander · Esslingen am Neckar, DE

Key dates

Filing date	Sep 3, 2020
Grant date	Jan 31, 2023
Priority date	—
Expiry date	Apr 10, 2041

Classification

Technology area (CPC H)Electricity
CPC primaryH04N9/3161
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

An apparatus and method for executing a safety function is particularly applicable to monitoring a safety area of a technical installation. An imaging unit acquires an event that triggers the safety function within a defined working area. A controller carries out a safety-related reaction depending on the triggering event. A test unit is configured to verify the operability of the imaging unit and includes a processing unit and a projection unit. The projection unit projects a pattern with defined properties into the working area. The processing unit evaluates the image data acquired by the imaging unit to detect the projected pattern within the acquired image data. Further, the processing unit extracts the specific properties of the detected projected pattern, and compares the specific properties of the detected projected pattern with the defined properties.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.