SYSTEM AND METHOD FOR OBTAINING BATTERY LIFESPAN
A method of determining a battery lifespan in an access control device includes determining a reference number of access events for the battery to transition from an initial voltage to a low voltage condition; collecting, in real time, a number of access events at the access control device; comparing the number of access events at the access control device to the reference number of access events; and determining the battery lifespan in response to the number of access events at the access control device and the reference number of access events.
1 . A method of determining a battery lifespan in an access control device, the method comprising:
determining a reference number of access events for the battery to transition from an initial voltage to a low voltage condition;
collecting, in real time, a number of access events at the access control device;
comparing the number of access events at the access control device to the reference number of access events; and
determining the battery lifespan in response to the number of access events at the access control device and the reference number of access events.
2 . The method of claim 1 wherein determining the battery lifespan comprises:
determining:
number of days until low voltage condition=cumulative days*max supported access events/cumulative number of access events;
where cumulative days is a number of days the access device has been in service;
max supported access events is the reference number of access events; and
cumulative number of access events is a count of the total number of access events experienced by the access control device over the cumulative days.
3 . The method of claim 1 further comprising generating a battery lifespan report in response to the battery lifespan.
4 . The method of claim 1 wherein the access control device is a lock.
5 . The method of claim 4 wherein the access event is one of locking and unlocking the lock.
6 . The method of claim 1 further comprising:
generating a trend report for the access control device, the trend report relating battery voltage to the number of access events;
comparing the trend report to an average trend report for a plurality of access control devices;
identifying the access control device as having a fault in response to the comparing.
7 . A system comprising:
an access control device having a battery;
a server in communication with the access control device, the server configured to:
determine a reference number of access events for the battery to transition from an initial voltage to a low voltage condition;
collect, in real time, a number of access events at the access control device;
compare the number of access events at the access control device to the reference number of access events;
determine a battery lifespan in response to the number of access events at the access control device and the reference number of access events.
8 . The system of claim 7 wherein determining the battery lifespan comprises:
determining:
number of days until low voltage condition=cumulative days*max supported access events/cumulative number of access events;
where cumulative days is a number of days the access device has been in service;
max supported openings is the reference number of access events; and
cumulative number of access events is a count of the total number of access events experienced by the access control device over the cumulative days.
9 . The system of claim 7 , wherein the server is configured to generate a battery lifespan report in response to the battery lifespan.
10 . The system of claim 7 wherein the access control device is a lock.
11 . The system of claim 10 wherein the access event is one of locking and unlocking the lock.
12 . The system of claim 7 wherein the server is configured to:
generate a trend report for the access control device, the trend report relating battery voltage to the number of access events;
compare the trend report to an average trend report for a plurality of access control devices;
identify the access control device as having a fault in response to the comparing.
13 . A computer program product for determining a battery lifespan in an access control device, the computer program product comprising a non-transitory computer readable storage medium having program instructions embodied therewith, the program instructions executable by a processor to cause the processor to implement operations comprising:
determining a reference number of access events for the battery to transition from an initial voltage to a low voltage condition;
collecting, in real time, a number of access events at the access control device;
comparing the number of access events at the access control device to the reference number of access events;
determining the battery lifespan in response to the number of access events at the access control device and the reference number of access events.