1.2 Detection Range and Capability
Sidescan
®
Predict takes measurements from all sensors 10 times per second and will detect
objects that appear in the detection area up to 2.5 metres from the installed side of the
vehicle.
There are some situations in which objects may not be detected. These are described below.
•
Size and shape: The system reliably detects pedestrians, cyclists, motorcyclists and
other roadgoing vehicles. Very small or thin objects however may not generate
sufficient reflection from the ultrasound pulse to be detected consistently.
•
Material and surface: Ultrasonic pulses are sufficiently reflected from humans,
vehicles, and roadside furniture. However, sound-absorbent materials or surface
finish (e.g. cardboard) will reflect less energy and may not be detected at the full range.
•
Distance: Objects which fall outside of the sensor detection pattern will not be
detected. The height of objects detected will depend on the mounting height and
angle of the sensors. Detection patterns are given in Section 1.3.
•
Temperature: The operating temperature for Sidescan
®
Predict is -30 to +70 °C.
There are also situations in which background noise can cause false detections on the
sensors. This is typically caused by vehicle pneumatics, jet washing and street sweepers.
In most cases this noise is filtered out and will not cause a visible or audible alarm to
the driver.
1.3 Detection Pattern
This section shows the detection pattern measured with a 110 mm pole as the target. The
actual detection pattern will vary depending on the target used.
1.3.1 Horizontal Detection Pattern
SSP-00HSS-W (white sensor) horizontal detection pattern (cm).
SSP-00HSS-B (black sensor) horizontal detection pattern (cm).
9
8
System state Power/fault
LED
Visual
alarm
Audio
alarm
Image
No firmware/
no buzzer
message
Alternate
green and
amber light
No light
None
Connected to
configuration
software
Flashing
green light
No light
None
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1
Introduction