Abstract: A thermal conduction structure is integrated into a multi-layer circuit board to thermally couple a power electronic device to a heatsink while electrically isolating the power electronic device from the heatsink. The thermal conduction structure includes a stack of alternatingly insulative and conductive layers, a first set of vertical vias that thermally and electrically join the power electronic device to a first set of conductive layers, and a second set of vertical vias that thermally and electrically join the heatsink to a second set of conductive layers that are interleaved with the first set of conductive layers.

Abstract: A thermal conduction structure is integrated into a multi-layer circuit board to thermally couple a power electronic device to a heatsink while electrically isolating the power electronic device from the heatsink. The thermal conduction structure includes a stack of alternatingly insulative and conductive layers, a first set of vertical vias that thermally and electrically join the power electronic device to a first set of conductive layers, and a second set of vertical vias that thermally and electrically join the heatsink to a second set of conductive layers that are interleaved with the first set of conductive layers.

Abstract: A transportation system and a method of transporting a handicapped individual are disclosed. The transportation system includes a navigational apparatus having a location sensor coupled to a personal mobility device. The location sensor detects signals emitted from a plurality of beacons disposed throughout the building. The signals include information, which permits the navigational assembly to calculate the location of the personal mobility device within the building. The navigational system then guides the personal mobility device along a pre-determined travel route to the desired location within the building, re-calculating the travel route as necessary to avoid obstacles encountered along the way.

Abstract: A personal mobility device, such as a wheelchair or a scooter, is disclosed. The personal mobility device includes at least one angle sensor to detect if the personal mobility device has overturned, and at least one accelerometer to detect if the personal mobility device has been struck in an accident. The angle sensor and the accelerometer sensor or coupled to a processor, and transmit data to the processor. A communication module is coupled to the processor and automatically signals a remote party for assistance when activated by the processor in response to an indication that the personal mobility device has overturned or been struck. The personal mobility device further includes a mast having a video device mounted atop thereof and in communication with a display to provide a video signal from an elevated position to the display, and a current sensor and a remote battery disconnect switch to reduce the potential for electrical fire.