JAI Vehicle Imaging Subsystem 300, Installation Manual

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Page 3
VIS CAM 300/400 Installation Manual
Introduction
measures the ambient light reflecting off the face of both vertical plates. The design is such that when
the face of one plate is in direct sun, the other one is in shadow. These two measurements identify the
range of light levels that the camera is required to image without saturation when a vehicle and its
license plate are in the camera’s field of view (FOV). To ensure correct functionality of the TLS-300, it
is very important to ensure during installation, that the sensor’s base plate is levelled with the road
surface, and that the orientation of the sensor is rotated so that the direction from the vertical plate A to
vertical plate B is the same as the direction of the traffic flow being observed by the traffic camera (see
Figure 2).
FIGURE 2.
Back shot VIS installation.
The TLS-300 light sensor is an essential component that ensures the VIS cameras will be ready to
capture high quality images of any vehicle and its license plate in virtually all weather and light
conditions.
It is very important to ensure that sensor positioning closely resembles real road conditions where the
vehicle image is most likely to be captured.
The light sensor is connected by means of the J-Panel VJP-300 and an RS485-to-Ethernet converter to
the Ethernet switch.
1.3.2 VISCAM
The VISCAM uses a state-of-the-art progressive interline transfer CCD that captures all of the vertical
resolution at once, thereby eliminating field-to-field imaging delays. The use of progressive scanning
allows the camera to freeze the motion of a rapidly moving vehicle at high resolution.
The VISCAM 300 houses a JAI TS-9720EN, while the VISCAM 400 houses the TS-2030EN Ethernet
camera with a built in IBM Power PC using an embedded Linux O/S and 64Mb memory for various