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 monitoring power in a portable device to permit battery replacement before a voltage supervisor of the portable device responds when a processor supply voltage (VDD) of a processor of the portable device drops to a predetermined response voltage level which is above a reset voltage level of the processor, said method comprising:
testing, during operation of the portable device, a power source voltage (Vbat) of a battery of the portable device with a testing interval; and providing a favorable warning on the portable device if the testing the power source voltage (Vbat) of battery indicates that the battery is approaching an end of its lifetime and if, at the same time of testing, a voltage level of an output voltage of a voltage converter of the portable device is maintained, said favorable warning indicating that time still remains for battery replacement prior to a response of the voltage supervisor.