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Speeder X1 and X2 Configuration and API Guide
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4.2 Speed measurement mode for horizontal installation
The value of the Parameter 1 is 12.
Horizontal mode measures speed from the side of the road and can detect vehicles
travelling on parallel lanes. Speeder X1 comprises two lasers and it must be installed in
correct orientation for intended application. Orientation for horizontal installation is shown
in the Fig. 6. Horizontal installation height is on the same level with cars i.e. measurement
beam hits the front of the car at the same height in both lanes (height of the licence
plates). Measurement beam hitting the target is shown in the Fig. 6. The height of the
measurement beam should be lower for the car in the picture but it is correct for higher
vehicles. Installation is always a compromise because the size of cars varies in real
measurement situations.
Measurement angle against the lanes should be such that the cars in the first lane are
detected roughly on 20 meters and cars on the second lane at 40 meters. In practise, set
the detection distance for the second lane at least to 40 meters and for the first lane it is
what it is. Sensor is set for operation with parameters. These parameters depend on
installation geometry and are shown in the Fig. 7. Thereafter programmatic calibration is
carried out for the horizontal measurement.
Fig. 6.
Orientation of the Speeder X1 sensor for horizontal measurement. In default orientation
connector is up and parameter 53 setting is 1.
Fig. 7.
Parameter settings.
1
2
Speeder
Par. 43
Par. 12, 13
Par. 32
