Abstract: A portable power system assembly that includes a portable power system (PPS) and a dock. The dock is mountable to a vehicle and includes a PPS holding tray and an actuator arm, with the actuator arm capable of being pivoted from a first position to a second position, the holding tray including a PPS receiving station and a PPS securing station, and the securing station including electrical supply terminals. The PPS includes a housing with opposing ends, there being mating electrical terminals at one end and at least one abutment region at the other end for engagement with the actuator arm.

Abstract: The present invention relates to a method and system for estimating blood pressure of a subject. In particular, but not exclusively, the method involves receiving a photoplethysmogram (PPG) signal from a light-based Pulse-Plethysmography sensor applied to the skin of a subject and reconstructing a pulse blood pressure waveform between systolic and diastolic blood pressure of the subject. Additionally, but not exclusively, the method involves processing the pulse blood pressure waveform and reconstructing an absolute blood pressure waveform of the subject.

Abstract: The present invention relates to a rotary switch. In particular, the rotary switch includes a main contactor having a main contact carrier and a main cam, a shaft rotatably journaled in the main contactor and extending axially through the main contactor, and an auxiliary contactor. When the switch is rotated from the ON position to the OFF position, the shaft rotates to break open auxiliary contacts before main contacts break open upon further rotation of the shaft.

Abstract: A synchronous DC-DC converter (300) for converting an input voltage (Vin) into an output voltage (Vout), the converter having a continuous current operative mode (CCM) and a discontinuous current operative mode (DCM), the converter including: an active switch (302) receiving a first gate signal for turning on the active switch for a first time interval (Tq1), the first gate signal having a period (Tprd); a synchronous rectifier (304) receiving a second gate signal for turning on the synchronous rectifier for a second time interval (Tq2); and a controller (306) for determining an estimation (Tq1est) for the first time interval, and thereafter comparing the estimation (Tq1est) with the value of the first time interval (Tq1); wherein responsive to the comparison the controller (306) determines an operative mode of the converter (300) and controls the second time interval (Tq2) depending on the determined operative mode.

Abstract: A brake controller is disclosed for a towed vehicle braking system. The controller is adapted to be mounted in a towing or a towed vehicle having a longitudinal axis for generating a braking control signal to the towed vehicle braking system. The controller comprises an inertial sensor including plural sensor axes adapted to be mounted in an undefined orientation relative to the longitudinal axis for generating sensor data associated with each sensor axis. The controller also comprises a memory device for storing the sensor data associated with each sensor axis and a processor for processing the sensor data with the braking control signal to evaluate orientation of the inertial sensor relative to the longitudinal axis.

Abstract: A battery isolator unit is disclosed for controlling a switching means having a first contact for connection to a terminal of a first battery, a second contact for connection to a corresponding terminal of a second battery, and an actuating input for biasing a switch element of the switching means switch in a closed position. The battery isolator unit includes a sensing circuit and a switch controller. The sensing circuit periodically determines a first and second value attributable to terminal voltage values of the first battery and the second battery respectively. The switch controller is responsive to detecting a predetermined condition of the first battery and/or the second battery to provide to the actuating input a control signal having a characteristic for biasing the switch element to the closed position.