Other

Schneider Electric USA, Inc.

Terarecon, Inc.

Square D Company

Ryan James Moffitt

Steve M Meehleder

Richard Allen Studer, Ii

Tiecheng T Zhao

William Davison

Keiji Ito

Kevin John Malo

Paul Andrew Reid

Jeremy D Schroeder

David Joseph Dunne

Susan Jean Walker Colsch

Gary Michael Stumme

Brian Patrick Grove

Richard Allen Ii Studer

Ii Richard Allen Studer

Ii Studer Richard Allen

A display device displays a first medical image to a user. Touchless sensor technology detects user actions. The touchless sensor technology includes at least one sensor that does not rely on physical touch to detect the user actions. An image processor that compares detected user actions with currently valid user action within a list of currently valid user actions for the first medical image to determine when a detected user action matches a currently valid user action from the currently valid user actions contained in the list. A medical image processing engine uses metadata identifying the first medical image and an action identifier for a currently valid user action that is matched by the detected user action to generate a second medical image based on the metadata and the action identifier. Thee display device displays the second medical image to the user.

Touchless advanced image processing and visualization

A server receives a request from a client device initiated from a user operating the client device. The server determines a user action identifier (ID) based on the request, the user action ID identifying a user physical action that was captured by one or more sensors. One or more image processing commands are determined based on the user action ID in view of a first medical image currently displayed at the client device. An image processing operation is performed based on the first medical image by executing the one or more image processing commands, generating a second medical image. The second medical image is transmitted to the client device to be presented to the user at the client device.

A circuit breaker system for providing thermal protection to a conductor conducting current from a power source to a load. While the power source is connected to the load, a microcontroller is powered by the current passing through the conductor to thermally model the temperature of the conductor. If the microcontroller determines that the temperature of the conductor has risen to an undesirable or unsafe level, the circuit breaker disconnects the power source from the load and the current no longer passes through the conductor. With no current passing through the conductor, the microcontroller no longer receives power from the conductor. Instead, the microcontroller continues to model the temperature of the conductor as the conductor cools to an ambient temperature by receiving power from an energy storage device. Accordingly, the microcontroller continuously models the temperature of the conductor until the temperature of the conductor cools to the ambient temperature.

Thermal memory in a fault powered system

A thermal sensing system for providing thermal protection to an electronic circuit breaker that does not require any additional components. The layout of the conductive traces on the printed circuit board are dimensioned and configured so that the ratio of primary current to primary conductor thermal mass heating is correlated with the ratio of secondary current to secondary thermal mass heating. A voltage at a semiconductor junction in the rectifier behind the secondary transformer is measured, and a temperature or heat is calculated based on the voltage. Because this temperature or heat calculation is correlated with the temperature or heat of the primary conductor, a trip routine can be added based on the measured voltage for thermal protection of the primary conductors. A thermal history of the 'primary thermal mass' is also provided for robust thermal protection of the circuit breaker load and primary conductors.

Secondary thermal sensor for primary conductors

An arc fault demonstrator device for testing the efficacy of an arc fault interrupter (AFI) circuit breaker. The device includes a motor that moves a movable electrode relative to a stationary electrode under microprocessor control. A relay switches the electrodes connection between an arc voltage measurement circuit and an electrode close circuit. When current is applied to the electrodes, the measurement circuit provides voltage measurements to the microprocessor, which instructs the motor to move the electrodes closer or apart. When the arc voltage is below a low threshold, the electrodes are moved apart until the arc voltage exceeds a medium threshold. When the arc voltage exceeds a high threshold, the electrodes are moved closer until the arc voltage falls below the medium threshold. A switch switches between the AFI circuit breaker or a conventional circuit breaker to confirm that the AFI breaker will trip upon detection of the arc whereas the conventional breaker will not.

Continuous series arc generator

A method and system to detect currents in the saturation region of a current transformer for a circuit breaker is disclosed. An example method is sensing a fault condition with a current transformer in a circuit breaker. The characteristic curve of the current transformer in a saturation mode is determined based on peak current. A current is received on the transformer. A secondary current is output from the transformer. It is determined whether the secondary current is indicative of a fault current in the saturation mode of the transformer. The breaker is tripped if the secondary current is indicative of a fault current.

Method and system of current transformer output magnitude compensation in a circuit breaker system

An automatic temperature compensation method that automatically adjusts trip point thresholds of a motor circuit protector in response to changes in temperature. The relationship between two curves is exploited to match temperature sensor readings from a temperature sensor circuit with burden resistor percentage values derived from a burden resistor circuit. A temperature inflection point is determined from the intersection of (1) the temperature sensor curve plotting the voltage output of the temperature sensor versus temperature and (2) the burden resistance curve plotting burden resistance versus temperature. A temperature value along the temperature sensor curve is transformed into the corresponding burden resistance on the burden resistance curve. The burden resistance is expressed as a percentage variance from a burden resistance at an ambient temperature. An adjusted trip point threshold is calculated from the computed burden resistor percentage, and the adjusted trip point threshold is stored in a memory.

Burden resistor temperature compensation algorithm

A method and system to calibrate a motor circuit protection device is disclosed. An example method calibrates a signal chain of a circuit breaker. The signal chain includes a current transformer, a burden resistor, a stored energy circuit and a controller. The circuit breaker includes a memory coupled to the controller. A calibration instruction routine is written in a first location of the memory. A test current is injected in the circuit breaker signal chain. The test current peak of the test current in the circuit breaker signal chain is measured. Data indicative of the test current peak is stored in a second location of the memory. The test current peak data is read from the second location of the memory. The test current peak data is compared with nominal current data related to the signal chain remotely from the circuit breaker. A calibration factor is determined based on the comparison.

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Coralville, IA, United States of America

Ryan James Moffitt