Ultrasonic displacement sensor using envelope detection
US6909668B2 · kind B2 · utility
16Cited by
13References
21Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 16, 2002 |
| Grant date | Jun 21, 2005 |
| Priority date | — |
| Expiry date | Jul 17, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S15/86
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus and method is provided for detecting motion or displacement of an object in a monitored zone. The apparatus is disposed between a load and a power source and comprises a transmitter for providing a pulsed signal within a monitored zone. The pulsed signal interacts with objects in the monitored zone and provides a return signal. A receiver receives echoes from a return signal of the pulsed record signal, and a microcontroller circuit processes the echoes. The processing involves retrieving and comparing phase and amplitude information associated with the echoes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.