49
Programming examples
Copyright eltima electronic 2022
Advanced example with a cross barrier
Task:
A camera should take pictures of a subject when it passes a specific point.
The cross light barrier is ideal for this. After a picture has been taken, the
camera should not be able to be released again for at least 500 ms. Since
this is a fast moving subject, the shutter lag of the camera should be kept
as low as possible.
A second camera, from a different perspective, shall take, with a delay of
200 ms, two shots in succession with a gap of of 300 ms, also triggered
by the cross light barrier. The waiting time for a next shot shall be 100ms.
A third camera, equipped with a wide angle, should record all move-
ments over the entire beam length of light barrier 2 (part of the cross
light barrier) without any delay. Therefore, it should be possible to re-
lease the camera again immediately after taking a picture.
A fourth camera should work independently of the events described
above, e.g. take pictures of an animal feeding nearby, which is detected
by the light barrier 3. As long as there are animals in the beam, the cam-
era should take a picture every 2 seconds so that a motion profile of the
animals during the feeding can be created.
Setting up the system: The light barriers 1 and 2 are arranged crosswise at
the desired location, light barrier 3, as a one beam barrier, is installed at the
feeding place. The 80 mm reflectors are used.
Parameter list: The table below shows a possible setting of the parameters
for this task.
Basic Parameters
Value
action mode
cross barrier
sensitivity 1 - 3
9
range
distance
dwell time
0 ms
scanning mode 1
with reflector
scanning mode 2
with reflector
scanning mode 3
with reflector
Output parameters
a
b
c
d
lag time
0 ms
200 ms
0 ms
0 ms
release time
200 ms
200 ms
200 ms
200 ms
release period
200 ms
300 ms
200 ms
200 ms
interval
700 ms
900 ms
200 ms
2000 ms
repetitions
0
1
0
0
trigger
act mode
act mode
barrier 2
barrier 3
drive mode
single
single
single
continu-
ous
wake-up
99
0
0
0
start time
00 00 00
16 28 42
00 00 00
08 53 09
end time
00 00 00
16 28 42
00 00 00
08 53 09
link
no link
no link
no link
no link
open shutter
0
0
0
0