Abstract: A battery management method for one or more batteries in a healthcare delivery system is provided. The method includes determining when the healthcare delivery system is drawing power from the one or more batteries and controlling a display unit coupled to the controller to display an initial number corresponding to a time remaining on battery (TROB) when the healthcare delivery system is drawing power from the one or more batteries. The method also includes determining if the TROB is within a reserve range extending up to a reserve range maximum that is less than a maximum TROB, changing the TROB according to an operational state of the healthcare delivery system if the TROB is greater than the reserve range maximum, and decreasing the TROB to count down the TROB without regard for the operational state of the healthcare delivery system if the TROB is less than the reserve range maximum.

Abstract: A battery management method for one or more batteries in a healthcare delivery system is provided. The method includes determining when the healthcare delivery system is drawing power from the one or more batteries and controlling a display unit coupled to the controller to display an initial number corresponding to a time remaining on battery (TROB) when the healthcare delivery system is drawing power from the one or more batteries. The method also includes determining if the TROB is within a reserve range extending up to a reserve range maximum that is less than a maximum TROB, changing the TROB according to an operational state of the healthcare delivery system if the TROB is greater than the reserve range maximum, and decreasing the TROB to count down the TROB without regard for the operational state of the healthcare delivery system if the TROB is less than the reserve range maximum.

Abstract: A battery management system is provided for one or more batteries. The system includes a display unit, and a controller coupled to the display unit and programmed to determine when a healthcare delivery system is coupled to the one or more batteries, to control the display unit to display an initial number corresponding to a time remaining on battery (TROB) when the healthcare delivery system is coupled to the one or more batteries, to determine if the TROB is within a reserve range extending up to a reserve range maximum, the reserve range maximum being less than a maximum TROB, to change the TROB according to an operational state of the healthcare delivery system if the TROB is greater than the reserve range maximum, and to decrease the TROB without regard for the operational state of the healthcare delivery system if the TROB is less than the reserve range maximum.

Abstract: A battery management system is provided for one or more batteries. The system includes a display unit, and a controller coupled to the display unit and programmed to determine when a healthcare delivery system is coupled to the one or more batteries, to control the display unit to display an initial number corresponding to a time remaining on battery (TROB) when the healthcare delivery system is coupled to the one or more batteries, to determine if the TROB is within a reserve range extending up to a reserve range maximum, the reserve range maximum being less than a maximum TROB, to change the TROB according to an operational state of the healthcare delivery system if the TROB is greater than the reserve range maximum, and to decrease the TROB without regard for the operational state of the healthcare delivery system if the TROB is less than the reserve range maximum.

Abstract: A therapeutic ultrasound generator controlling an ultrasonic transducer based on actually sensing the amount of power radiated by the transducer to the patient. A controllable ultrasound generator, supplies a controllable amount of electric power to a transducer. A sensing circuit, coupled to the transducer, senses an amount of power radiated by the transducer. A control loop, which is responsive to the amount of power radiated, and a preset radiation power, controls the controllable amount of electric power delivered to the transducer. The radiation power is sensed by detecting an instantaneous current through the transducer, and an instantaneous voltage across the transducer. The instantaneous current and voltage are then used to compute an impedance. The computed impedance, and known characteristics of the transducer, are used to determine the actual amount of power radiated by the transducer to the patient.

Abstract: A phase-locked loop with redundant reference input signals compares each reference input signal to the loop feedback signal to generate corresponding phase correction signals. In response to a reference select signal, one of the phase correction signals is selected for supply as a loop correction signal. The loop correction signal is supplied through a filter as a control signal to a VCO. Phase and frequency detectors are included, each detector receiving a corresponding reference input signal and connected to receive the loop feedback signal for generating a phase correction signal indicating the phase and frequency difference between the corresponding reference input signals and the output signal. Also, a selector is provided in communication with each of the detectors that selects one of the phase correction signals in response to the reference select signal as the loop correction signal.

Abstract: An intelligent phase-locked loop performs adaptive transfer function parameter selection and fault tolerant self-monitoring within the phase error filtering algorithm. The algorithm includes a capture mode, at least one align mode and an operate mode. The capture mode shifts to the align mode if the phase error limit is not exceeded at the end of a first period of time. The align mode switches back to the capture mode if a reverse phase error relation is met during the mode. At the end of the align mode, the algorithm switches to the operate mode if a forward phase error relation is met. The operate mode continues indefinitely. However, a switchback to the align mode is made if an out of lock phase error limit is exceeded for the operate mode. The bandwidths of the transfer function of the loop are adapted for each of the modes so that the capture mode is the broadest bandwidth, the align mode is an intermediate bandwidth and the operate mode is a narrow bandwidth.