Piezocable based sensor for measuring unsteady pressures inside a pipe
US7367239B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 23, 2005 |
| Grant date | May 6, 2008 |
| Priority date | — |
| Expiry date | Mar 23, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L9/0001
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A piezocable-based sensor for measuring unsteady pressures inside a pipe comprises at least one cable extending around at least a portion of a circumference of the pipe. The cable includes a first electrical conductor, a piezoelectric material disposed around the first electrical conductor, and a second electrical conductor disposed around the piezoelectric material. The sensor provides a signal indicative of unsteady pressure within the pipe in response to displacement of the pipe. In various embodiments, a band is wrapped around the at least one cable for compressing the at least one cable toward the pipe. In other embodiments, the sensor includes a clamp attached to opposing ends of the at least one cable for holding the at least one cable in tension around the pipe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.