Method and Apparatus for Modular Power Management and Protection of Critical Services in Ambulatory Medical Devices

摘要

Architecture and associated methods are provided for power management of ambulatory medical devices. The medical devices is described by a suite of services, each assigned a level of priority (from discretionary to critical), and the power management architecture allows use interchangeable control modules of various levels. A Power Safety Controller supervises the system to ensure appropriate preservation of critical services and provide warnings for low battery level. A Fidelity Controller ensures optimal allocation of power between the different services. A device supervision module estimates device characteristics which can be used by the other levels. The overall architecture ensures a safe and optimal management of services, and allows for a bottom-up deployment of the device.

主权项

1. A power management system for managing power consumption of a battery-operated device configured to provide a plurality of services, comprising:
a device characteristics estimation module configured to receive a battery level of said device, at least one parameter of a user of the device, and the services being provided by the device, said device characteristics estimation module being further configured to construct time profiles encoding a probability of at least one of said battery level, user parameter, and services being provided having certain values at each of a number of time segment k; a fidelity controller module configured to receive said time profiles from said device characteristics estimation module and said battery level, and to set a fidelity policy u(k) for each time segment k, said fidelity policy defining a level of fidelity for each service; a power controller module configured to receive said fidelity policy u(k) and said battery level, to compute an amount of time remaining before battery exhaustion under said battery level and a mode of operation having a predefine power consumption rate, and to take a predetermined action based on the computed amount of time remaining with respect to at least one preset threshold; and a device service regulator module for regulating access of said services to resources of said device for performing said services, in accordance with a predetermined action communicated from the power controller module.