6
Please note the above angle is for reference only. Please select the reasonable snap position.
Usually, the nearer the distance is, it is easy to distinguish the vehicles one by one. But the
speed error correction value may be high
，
and vice versa. Besides, the radar wave beam level
width is fixed 3dB. It shall guarantee the single-lane (There is no interference form neighboring
lane) and at the same, it can capture the vehicle running on the line. It has requirements of the
radar beam level angle. When the projection distance is far, the width of the level 3dB shall be
smaller. When the projection distance is near, the width of the level 3dB shall be larger. When
the distance is fixed, the width of the level 3dB is high if the you want the lane becomes width.
The narrow the lane is, the width of the level 3dB is smaller.
Please refer to Figure 5-2 and Figure 5-3 for ANPR installation information.
Figure 5-2
Figure 5-3
Step 4
Connect the radar to the camera.
Connect the radar to the camera via the RS232 port.
Radar
Camera
Cable Color
Signal
Signal
Green
TXD
RXD
Yellow
RXD
TXD
