Causing relative motion
US8263955B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2008 |
| Grant date | Sep 11, 2012 |
| Priority date | — |
| Expiry date | Apr 21, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2015/1027
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Sensors can be used to obtain encoded sensing results from objects that have nonuniform relative motion. A photosensor or impedance-based sensor, for example, can obtain sensing results from objects that have relative motion within a sensing region relative to the sensor, with the relative motion being, for example, periodically varying, randomly varying, chirp-varying, or modulated relative motion that completes at least one modulation cycle within the sensing region. Relative motion can be caused by varying objects' speed and/or direction or by controlling flow of fluid carrying objects, movement of a channel, movement of a support structure, movement of a sensor, and/or pattern movement. A fluidic implementation can include shaped channel wall parts and/or a displacement component causing time-varying lateral displacement. A support structure implementation can include a scanner device and a rotary device that respectively control scanning and rotating movement of a movable support structure or of a sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.