Eurotech PCN-1001, Руководство пользователя

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Step
4: Use WinClient to network PCN-1001 & Host PC PCN-1001 User manual
43
PCN-1001_UserMan_En_4.0
7: Use the “Scene background” button to acquire and store the background
Together with “Door threshold”, “Scene background” is the most important parameter that has to be
properly set to obtain a reliable counting process.
The acquisition and storage of the background is a fundamental and sensitive issue.
A bad background acquisition can seriously affect the counting process.
IMPORTANT NOTE:
Acquire the background in the following circumstances:
• Once the PCN-1001 has been installed
• When the PCN-1001 has been relocated
• If the background has altered
Pay attention to the following issues:
• The background has to be taken with no foreign removable objects in the detection area
• The background has to be taken with doors open, especially if the doors would block the PCN-1001s’
field of view as frequently occurs within buses or trains
• Lighting of the detection area should be diffused as much as possible. No spot lighting (e.g. solar
reflections or strong lighting) should be present in the detection area during background acquisition
• Highly reflective, geometric structures situated on or near the floor, such as the metallic parts of a door
mechanism, which cause extreme patterns of light and darkness when illuminated by strong light (e.g.
direct sunlight or directional halogen lighting) could lead to flawed distance measurements. To avoid
performance degradation due to these effects the structures and any highly reflective surfaces should
be avoided as much as possible in the detection area
• Metallic or shiny objects (such as handles, bars, glass, etc.) should not cover a significant part of the
detection area. If this is not avoidable, the reflectivity of these items should be reduced by means of
non-reflective materials or modifying the “No Tracking Zone”
• If necessary, use the features of the “No Tracking Zone” panel in “ The “Advanced (1/2)” tab ” (page 73).
The “No Tracking Zone” feature allows you to define rectangular zones in the detection area where
tracking will not be performed. This feature can be used to mask surfaces that are very reflective or with
spot lighting