3.2 Functionality
The device continually acquires stereoscopic video images in its
visual range.
3
2
1
Fig. 9: People sensing
1
Advanced People Sensor (APS)
2
Configured area/monitored area
3
Counting line
The integrated software evaluates the stereoscopic images. Per-
sons within the monitored area are recognized automatically and
their movements are tracked across the subsequent images.
The software provides the following functions:
The essential purpose of the device is to count boarding and
alighting passengers at the exterior doors of a vehicle. A very high
accuracy can be expected under the usual operating conditions of
a public transit system (typically better than 98 percent).
The device can record color VGA video files and store them inter-
nally or automatically upload them to a remote location, for later
analysis. The recording can be triggered via the digital inputs (door
contact). Video recording is a very efficient and transparent method
for periodic verification of the counting accuracy, and an excellent
diagnostic tool for the technical service.
The device checks its visible range permanently. The status of this
optical self diagnosis (OSD) is shown in the user interface.
Bi-directional Passenger Counting
Video recording for count verifica-
tion
Optical self diagnosis
Structure and function
Functionality
14
09.06.2017
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Summary of Contents for APS-R
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