Usha Jagadish

US Patent:

7825819, Nov 2, 2010

Filed:

Nov 11, 2008

Appl. No.:

12/268657

Inventors:

Govindarajan Muralidharan - Knoxville TN, US
Charles L. Britton - Alcoa TN, US
James Pearce - Lenoir City TN, US
Usha Jagadish - Knoxville TN, US
Vinod K. Sikka - Oak Ridge TN, US

Assignee:

UT-Battelle, LLC - Oak Ridge TN

International Classification:

G08B 21/00

US Classification:

340665, 220200, 235385

Abstract:

A low-power shock sensing system includes at least one shock sensor physically coupled to a chemical storage tank to be monitored for impacts, and an RF transmitter which is in a low-power idle state in the absence of a triggering signal. The system includes interface circuitry including or activated by the shock sensor, wherein an output of the interface circuitry is coupled to an input of the RF transmitter. The interface circuitry triggers the RF transmitter with the triggering signal to transmit an alarm message to at least one remote location when the sensor senses a shock greater than a predetermined threshold. In one embodiment the shock sensor is a shock switch which provides an open and a closed state, the open state being a low power idle state.

US Patent:

20070182577, Aug 9, 2007

Filed:

Feb 3, 2006

Appl. No.:

11/346867

Inventors:

Govindarajan Muralidharan - Knoxville TN, US
Charles Britton - Alcoa TN, US
James Pearce - Lenoir City TN, US
Usha Jagadish - Knoxville TN, US
Vinod Sikka - Oak Ridge TN, US

International Classification:

G08B 21/00
G08B 1/08

US Classification:

340669000, 340539100

Abstract:

A low-power shock sensing system includes at least one shock sensor physically coupled to a chemical storage tank to be monitored for impacts, and an RF transmitter which is in a low-power idle state in the absence of a triggering signal. The system includes interference circuitry including or activated by the shock sensor, wherein an output of the interface circuitry is coupled to an input of the RF transmitter. The interface circuitry triggers the RF transmitting with the triggering signal to transmit an alarm message to at least one remote location when the sensor senses a shock greater than a predetermined threshold. In one embodiment the shock sensor is a shock switch which provides an open and a closed state, the open state being a low power idle state.