Photoelectric sensor and light emitter with abnormality detection
US11385330B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 16, 2017 |
| Grant date | Jul 12, 2022 |
| Priority date | — |
| Expiry date | Oct 4, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/94104
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A photoelectric sensor including a light emitter and a light receiver is provided. The light emitter includes a light emitting unit configured to emit a light beam, and a power supply circuit configured to receive supply of electric power through a first power supply line leading to an outside of the light emitter and to supply required electric power to the light emitting unit. The light receiver includes: a first switching element, the first switching element serving to output a first output signal; a second switching element serving to output a second output signal; and a detection circuit. A third power supply line is provided such that one end of the third power supply line is electrically connected to the first power supply line inside the light emitter, and the other end is electrically connected to the second power supply line outside the light receiver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.