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Speeder X1 and X2 Configuration and API Guide
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Fig. 4.
Timing of the Digital outputs when delayed trigger is activated.
4.1.3 Profile measurement
Sensor is able to output distance information during the vehicle detection. Output is in
binary format as
described below. Binary format doesn’t effect on normal speed output
and trigger functions. Speed output occurs after binary output in selected format.
Vehicle profile is calculated based on the raw distance data when installation height,
measurement distance to the ground and vehicle speed are known.
Fig. 5.
Noptel laser radar collects distance measurement data from the area between the sensor and
the road surface detecting all passing vehicles. It is possible to acquire exact profile regarding
passing vehicle with activated profile measurement.
The profile measurement data is delivered in 2 or 3 bytes depending on the control bits.
Profile data format can be used for distances up to 81.9 metres. Raw data output
originates from single laser (Beam A for approaching and Beam B for departing). Sensor
has two different measurement rates, pulse rate (parameter 5) is used for accurate
vehicle detection and speed pulse rate (parameter 29) for speed measurement. Profile
Digital Input/Output
Delayed distance
(par. 46)
Trigger Legth
(par. 17)
Clear Check Time
(par. 18)
Detection of a target
Detection
Ready for new detection
Digital Output
