MEDICAL INFUSION PUMP WITH POWER SOURCE VOLTAGE LOGGING AND METHOD FOR LOGGING A POWER SOURCE VOLTAGE IN A MEDICAL INFUSION PUMP

摘要

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.

主权项

1. 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.