Patent ID: 8766643
Filing Date: 2014-07-01
Classification: G01R,H02J

Abstract:
1. A method for monitoring the remaining service life of a battery used during operation of a field device in automation technology, wherein the field device is operated in various operating states and associated with each operating state of the field device is stored a defined power consumption of the battery as a function of the arising operating states, and wherein the method uses both a consumption calculation during a first phase of life as well as an End-of-Life detection during a second phase of life, comprising the steps of: during the first phase of life, comparing the calculated sum of the power consumptions of the arising operating states of the field device with a predetermined threshold value; entering a second phase of life when the sum of the calculated power consumptions of the arising operating states of the field device exceeds the predetermined threshold value; during the second phase of life, exposing the battery to defined overload spikes at predetermined time intervals; detecting voltage collapses corresponding to the defined overload spikes; and generating a warning report when the voltage collapses reaches a predetermined maximum limit value.