Time-of-flight safety photoelectric barrier and method of monitoring a protective field
US10082245B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 12, 2016 |
| Grant date | Sep 25, 2018 |
| Priority date | — |
| Expiry date | Sep 22, 2036 |
Classification
- Technology area (CPC —)General
Abstract
The present invention relates to a safety photoelectric barrier for monitoring a protective field and to a corresponding method. A safety photoelectric barrier (100) comprises a single-sided transceiver bar with a housing (102), a plurality of transceiver modules (104) each having a radiation emitting unit (112) for emitting radiation towards a reference target (108), a radiation detecting unit (114) for detecting radiation incident on the transceiver module (104), and a signal processing unit for evaluating the detected radiation regarding a distance information and an intensity information and for generating a binary output signal indicating the presence or absence of an object within the protective field. A controller module (126) evaluates the binary output signals and generates a safety signal in response to the evaluated output signals. The radiation detecting unit comprises at least a first and a second photosensitive element (114) for redundantly evaluating the distance and intensity information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.