User Guide
Count Bin Capacities
The following information is intended to assist the user in understanding the intersection count data bin
storage capacity of VersiCam. Count data is handled in a FIFO (First In – First Out) format. This means that as
data is added to the storage memory and the memory allocation becomes filled the oldest data will be
dumped to make room for the new data. The VersiCam count data string consists of 16 bytes of information.
The storage capacity is based on the number of bins available (fixed) and the total number of count zones
(variable) and the selected count interval (variable). Given the number of bins available, you can easily
calculate the storage capacity.
The chart below identifies the maximum number of days of intersection count data that can be stored for the
following scenarios —
#1 – One (1) zone per camera at a one (1) hour interval
#2 – Six (6) zones per camera at fifteen (15) minute intervals
For scenarios other than shown above the following formula may be used:
D = B / (Zt x (60/I) x 24)
Where:
D = Days
B = Bins
Zt = Total Number of Zones for all Cameras
I = Interval in Minutes
Count String Format:
Count Data String = Zone Detail Number, Date, Time, Count, Video Status
Typical Count Data String:
06,2005-09-15,09:25:00,006,Video OK
06 = Zone Detail Number
2005-09-15 = 9/15/05 (Date)
09:25:00 = 9:25 AM (Time)
006 = Count of 6 Vehicles during the Bin Interval period
Video OK = Video Status at Time of Count
If the data exceeds the size of the memory buffer, the oldest data is simply over-written (FIFO).
To Next Page
Loading...
