Method for monitoring remaining service life of a battery
First Claim
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.
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Abstract
A method for monitoring the remaining service life of a battery used for operating a field device in automation technology. The present power consumption of the battery is ascertained. Then, during a first phase of life, power consumption of the battery ascertained during operation of the field device is compared with a predetermined threshold value. In the case of exceeding the predetermined threshold value, during a second phase of life, the battery is exposed to defined load spikes at predetermined time intervals. Voltage collapses corresponding to the defined load spikes are detected, and a warning report is generated when the voltage collapses reach a predetermined maximum limit value.
23 Citations
14 Claims
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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:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification