System and method for capacitance sensing of pavement density
US6577141B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 13, 2001 |
| Grant date | Jun 10, 2003 |
| Priority date | — |
| Expiry date | Aug 17, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/22
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention discloses a system and method of determining the density of pavement material. The invention includes positioning a capacitive proximity sensor, adjacent to but not in direct contact with a pavement material, projecting an electrostatic capacitive field from the sensor in the direction of the pavement material, measuring the strength of the electrostatic capacitive field as detected by the sensor, and correlating the strength of the electrostatic capacitive field to the density of the pavement material. The invention further discloses determining a location and associating the location with a pavement material density.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.