Electromagnetic wave reflective type, low cost, active proximity sensor for harsh environments
US5600253A · kind A · utility
17Cited by
9References
1Claims
0Family size
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Key dates
| Filing date | May 8, 1995 |
| Grant date | Feb 4, 1997 |
| Priority date | — |
| Expiry date | May 8, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V8/005
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A low power, low cost, millimeter wave (MMW) proximity sensor that provides over a 6:1 increase in minimum detection range (55 mm minimum) compared to standard 18 mm inductive proximity sensors preferably includes a low cost MMW Gunn oscillator, MMW detector and analog processing/driver circuitry. The sensor is preferably designed for 3-wire operation and will fit in a standard 18 mm tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.