Other

Microchip Technology Inc.

Powersmart, Inc.

Parviz Ghaseminejad

Daniel D Friel

Matthew P Hull

Roland Rathmann

Phuoc Van Duong

A system and method for time constrained retrieval of sensor data includes a sensor monitor system coupled to a plurality of sensors, wherein each sensor is coupled to a device having a variety of variable parameters to be sensed at intervals within a given timeframe. When at least some of the parameter values are relatively stable within the intervals, the sensor monitor system selectively requests parameter values from only a subset of the sensors at one or more intervals. However, preferably, a parameter value is obtained for each parameter at least once within the timeframe. In such a case, a current set of parameter values includes the most recently obtained parameter values for each parameter, regardless of the interval from which each parameter value was obtained.

Time constrained sensor data retrieval system and method

An opto-isolator circuit for providing isolation between a bi-directional, I2C transmission line and a pair of single-direction transmission lines. The opto-isolator circuit includes a bi-directional port for receiving data from, and providing data to, the bi-directional transmission line. The circuit further includes an output path that has (i) a first buffer for receiving outgoing data from the bi-directional port, (ii) a first opto-isolator for receiving the outgoing data from an output of the first buffer, and (iii) a second buffer for receiving the outgoing data from an output of the first opto-isolator and providing the outgoing data to an output port. The circuit also includes an input path, that has (i) a third buffer for receiving incoming data from an input port, (ii) a second opto-isolator for receiving the incoming data from an output of the third buffer, and (iii) a fourth buffer for receiving the incoming data from an output of the second opto-isolator. The fourth buffer provides the incoming data to the bi-directional port such that characteristics of the incoming data are compatible with I2C characteristics.

I2C opto-isolator circuit

A rechargeable battery pack and a method of managing operations of a rechargeable battery pack. Sensing elements are provided to sense and to generate analog signals representing battery parameters, and an analog-to-digital converter is used to convert those analog signals to digital signals. A processor uses those digital signals to perform various routines. The processor switches the analog-to-digital converter from a disabled state, in which the analog-to-digital conversions are not performed, to an abled state under defined conditions.

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Framingham, MA, United States of America

Parviz Ghaseminejad