Medical infusion pump with power source voltage logging and method for logging a power source voltage in a medical infusion pump
AssigneeRoche Diabetes Care, Inc.
InventorsReto Aeschlimann, Thomas Rufer
Life of this patent
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Abstract
A medical infusion pump and a method for logging a power source voltage of a medical infusion pump are disclosed. The medical pump may include a power source, a processor, and a voltage supervisor which responds if a voltage (VDD) drops to a response voltage level which is above a reset voltage level of the processor. When the voltage supervisor responds, the processor start logging the voltage (Vbat) of the power source in a memory, thus generating a voltage log. The memory maintains the logged data when the power supply by the power source is interrupted, thus enabling retrospective analysis of the voltage log.
Claims20
A method for retrospectively determining a cause of a power supply interruption in a portable device, comprising:
- monitoring a processor supply voltage (VDD) via a voltage supervisor;
- responding if the processor supply voltage (VDD) drops to a predetermined response voltage level which is above a reset voltage level of the processor by providing an output signal via the voltage supervisor and logging a power source voltage (Vbat) in a memory to generate a voltage log, and maintaining in the memory logged data when the power supply by the power source is interrupted to enable retrospective analysis of the voltage log;
- and
- determining retrospectively the cause of the power supply interruption in the portable device by retrospectively analyzing the voltage log.
A method for retrospectively determining a cause of a power supply interruption in a handheld device, comprising:
- monitoring a processor supply voltage (VDD) via a voltage supervisor;
- responding if the processor supply voltage (VDD) drops to a predetermined response voltage level which is above a reset voltage level of the processor by providing an output signal via the voltage supervisor and logging a power source voltage (Vbat) in a memory to generate a voltage log, and maintaining in the memory logged data when the power supply by the power source is interrupted to enable retrospective analysis of the voltage log;
- and
- determining retrospectively the cause of the power supply interruption in the handheld device by retrospectively analyzing the voltage log.
Dependencies are inferred from the claim text.