Title:
SELF-POWERED WIRELESS INDUCTION SENSOR
Document Type and Number:
WIPO Patent Application WO/2012/158342
Kind Code:
A3
Abstract:
An induction sensor generates speed data based on a frequency of the change in magnetic flux within the sensor and powers sensor circuitry by recharging a power source using at least a portion of the electrical voltage induced by the change in magnetic flux. In this manner, the induction sensor may generate its own power to sense and transmit data. To optimize the recharging power available from the induced electrical voltage, the sensor may also include a variable load. This variable load may be automatically controlled by the sensor based on the induced voltage and/or current. The induction sensor may also wirelessly transmit generated data. In addition, the sensor may, after shutting down, automatically power up in response to the change in magnetic flux exceeding a start-up threshold.
Inventors:
RAMSESH ANILKUMAR (US)
Application Number:
PCT/US2012/036060
Publication Date:
March 28, 2013
Filing Date:
May 02, 2012
Export Citation:
Assignee:
HONEYWELL INT INC (US)
RAMSESH ANILKUMAR (US)
RAMSESH ANILKUMAR (US)
International Classes:
G01D5/20; G01B7/30
Foreign References:
| US7256505B2 | 2007-08-14 | |||
| US20080047363A1 | 2008-02-28 | |||
| US6515878B1 | 2003-02-04 | |||
| US20080204005A1 | 2008-08-28 |
Attorney, Agent or Firm:
BEATUS, Carrie (Patent Services M/S AB/2B101 Columbia Road,P. O. Box 224, Morristown New Jersey, US)
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