Sensitivity optimization of individual light curtain channels
US9798041B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 22, 2014 |
| Grant date | Oct 24, 2017 |
| Priority date | — |
| Expiry date | Aug 11, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J1/20
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A light curtain controller is provided that serially tunes or optimizes the operating margin of each channel during an initialization sequence. The controller measures and adjusts the operating margin for each emitter-receiver pair individually, such that the margin for each channel satisfies a defined optimization criterion. In this way, the light curtain's unique environmental and installation conditions are taken into account when tuning each channel. By individually tuning each emitter-receiver pair, the operating margin of each channel is set sufficiently high to ensure accurate object detection, while excessive margin is limited to prevent signal processing errors, such as those associated with adjacent-channel signal bleed-through, susceptibility to internal and external noise, etc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.