Draeger Medical Systems, Inc.

Xilectric, Inc.

Charles R Lemay

Andrew Ferencz

Steven E Weiss

Clifford Mark Kelly

Martin Doering

Donald Myers

Systems, devices, and methods of diagnosing an electrochemical cell using cyclic coulometry are discussed. An exemplary battery diagnostic system comprises a current generator to generate symmetric charge current and discharge current to excite an electrochemical cell, and a cyclic coulometer to evaluate performance of the electrochemical cell. The cyclic coulometer can adjust at least one of a charge time for applying the charge current, or a discharge time for applying the discharge current, to keep a monitored cell voltage toward a specific setpoint. The adjustment of charge or discharge time can be achieved by changing a current switch timing for reversing current from a first to a second current direction. The cyclic coulometer measures one or more electrical parameters during the charge or discharge cycle, and generates a performance metric using the measured electrical parameters.

Methods and algorithms of cyclic coulometry

Systems and apparatus of cyclic coulometry

A system monitors cable interface connections in a network. An individual cable interface connection includes a connection between a cable and an associated device in the network. The system includes a plurality of individual interface controllers. The plurality of individual interface controllers monitor one or more cable interface connections in a network. This plurality of interface controllers include a first interface controller for automatically acquiring device type identification data from a second interface controller which is monitoring a connection between a cable and an associated device in the network. The device type identification data is acquired via the cable and the first and second cable interface connections at the end of the cable. The device type identification data supports identification of the device associated with the second cable interface connection. The first interface controller supports communication between individual interface controllers in the network on a first communication link. The system further includes a second communication link, different from the first communication link, being conveyed via the plurality of cable interface connections in the network.

System for monitoring cable interface connections in a network

A pulse signal drive circuit includes an energy storage device. A source of energy supplies a substantially constant flow of energy to the energy storage device. A switch circuit draws repetitive pulses of substantially constant energy from the energy storage device to generate corresponding pulse drive signals.

Pulse signal drive circuit

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Portsmouth, NH, United States of America

Charles R Lemay