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8 INTRODUCTION  SMARTSENSOR MATRIX USER GUIDE

140 ft

Sensor Pole

140 ft

Figure I.3 – Corner Radar

 Line of sight – Position the sensor so that it will be able to detect the entire area

of interest. Avoid occlusion by installing the sensor away from trees, signs and other

roadside structures.

 Detection coverage – Position the sensor so that it will be able to reach all the specied

stop bar detection zones. e sensor will often work better if you position it so that it

tracks vehicles for several feet before the rst zone in each lane. If the sensor has a view

several feet beyond the stop bar, it is more likely to accurately detect queue dissipation.

 Closest roadside – Mount the sensor on the side of the road closest to the lanes of

primary interest. Always mount the sensor high enough to prevent trac from occlud-

ing approaching vehicles.

 Mounting height – A minimum height of 12 ft. (3.6 m) is recommended. Mounting

the sensor higher will generally improve line of sight and decrease the possibility of

occlusion.

 Mounting oset – A minimum oset of 6 ft. (1.8 m) to the rst lane of interest is

required.

 Redundant detection – It is possible to have multiple sensors monitoring the same

approach. Multiple sensors are needed when zones are spread over more than 140 ft.

(42.7 m).

 Sensor proximity – When multiple sensors are mounted at the same intersection,

interference can be avoided by conguring each sensor to operate on a unique RF

channel.

 Departing lanes – ere is usually no need to view trac in departing lanes or to

congure departing lanes. However, if they are congured, then the stop bar should

not be congured.

 Suspended electrical cables – e sensor is designed to work in the presence of sus-

pended power lines and other electrical cables. However, these cables should be at least

10 ft. (3 m) away from the front of the sensor.

 Neighboring structures and parallel walls – e sensor should not be mounted with

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Wavetronix SMARTSENSOR 105 Guía de usuario Pagina 9