System for sensing air velocity without requiring external power supply and a method for operating the same
US7669485B2 · kind B2 · utility
14Cited by
2References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2007 |
| Grant date | Mar 2, 2010 |
| Priority date | — |
| Expiry date | May 15, 2028 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24F2110/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An air velocity sensing system not requiring external power supply is applied to an air duct system, comprising: (1) a sensor module disposed in the air duct for measuring the air velocity therein and for saving the measured air velocity value; and (2) a control module for wirelessly transmitting a signal to the sensor module, which sends the measured air velocity value back to the control module after receiving the signal from the control module, so as to have the air velocity value displayed on control module. The present invention also provides an air velocity sensing method not requiring external power supply.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.