Campbell CC5MPXWD, Инструкция по эксплуатации

Страница: 103 / 126

CC5MPX Digital Camera
91
The current draw of the camera is mainly dictated by the quiescent current
draw of the power mode, plus the current draw when the camera enters the
Fully On power mode (active current draw) to acquire an image or video.
TABLE 8-16 shows some total power consumption (standalone) figures in
ampere hours (A hr) per day depending on the power mode and frequency of
images.
One thing to note is that the OFF state will only consume less power than the
Deep Sleep state if fewer than 24 pictures are taken per day. This is due to the
boot-up time that the camera requires when exiting the OFF state. The extra
boot-up time means that the camera consumes the active current for a longer
time (120 seconds).
TABLE 8-16. Power Consumption (Standalone)
Power
Mode
Ethernet
Power Save
Mode
Quiescent
Current Draw
Max. @ 12 Vdc
Active Current
Draw Max. @
12 Vdc Active
Duration
Ampere
Hour Per
Day
2 JPG/Hr
Ampere
Hour Per
Day
1 JPG/Hr
Ampere
Hour Per
Day
1 JPG/Hr
Fully On
Always On 250 mA
250 mA
0 Sec/JPG
6.0 6.0 6.0
Full Power
Save
200 mA
200 mA
0 Sec/JPG
4.8 4.8 4.8
Partially
On
Always On 80 mA
250 mA
0 Sec/JPG
1.92 1.94 2.2
Full Power
Save
10 mA
200 mA
0 Sec/JPG
0.24 0.27 0.54
Deep
Sleep
Always On 6 mA
250 mA
0 Sec/JPG
0.15 0.18 0.63
Full Power
Save
6 mA
200 mA
0 Sec/JPG
0.15 0.18 0.53
OFF
Always On 1 mA
250 mA
0 Sec/JPG
0.041 0.22 2.4
Full Power
Save
1 mA
200 mA
0 Sec/JPG
0.037 0.18 1.93
8.12.2 Operation with Communications
The power calculations are more complicated when communications are
involved, as the amount of time the camera is Fully On state is increased by the
amount of time it takes for the camera to transfer an image or video.
The transfer times are influenced by two main factors: the size of the image
and the transfer speed used to send the image. The amount of time the camera
is on will be increased as the size of the image becomes larger or as the
communication rate slows down.
To properly determine the power consumption when using communications,
the additional time the camera consumes the Fully On current draw needs to be
accounted for in the power calculation. Refer to TABLE 8-17 as a guideline for