Wavetronix SmartSensor HD - Occlusion and multipathing

SmartSensor HD
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SmartSensor HD Installation Specification
1.0 General. is item shall govern the installation of an aboveground radar vehicle sensing device (RVSD) equivalent to the
Wavetronix SmartSensor™ HD.
RVSDs can provide accurate, consistent and reliable data provided they are installed properly. e requirements in this specica-
tion are intended to ensure proper RVSD installation.
2.0 Mounting and Installation.
2.1 Mounting Assembly. e RVSD shall be mounted directly onto a mounting assembly fastened to a pole or other solid
structure.
e RVSD mounting assembly shall provide the necessary degrees of rotation to ensure proper installation.
e RVSD mounting assembly shall be constructed of weather-resistant materials and shall be able to support a 20-lb.
(9.1-kg) load.
2.2 Mounting Location. e RVSD shall be mounted at a height that is within the manufacturer’s recommended mount-
ing heights.
e RVSD shall be mounted at an oset from the rst lane that is consistent with the RVSD’s minimum oset.
e RVSD shall be mounted so that the farthest lane to be monitored is within the maximum range of the RVSD.
e RVSD shall be mounted with its cable connector down and shall be tilted so that the RVSD is aimed at the center of
the lanes to be monitored. Typically, the RVSD is tilted o of vertical by 10–20 degrees.
e RVSD shall be aligned so that the horizontal angle is within approximately ±2 degrees of perpendicular to the ow of
trac. e RVSD alignment tool shall be used to verify pointing accuracy.
Two RVSD units shall not be mounted so that they are pointed directly at each other.
A distance of 40 ft. (12.2 m) or more, along the direction of the roadway, shall separate the RVSDs if they are located on
opposing sides of a roadway, and the RVSDs shall be congured to operate on dierent RF channels.
RVSDs that are mounted within 20 ft. (6.1 m) of each other shall be congured to operate on dierent RF channels
regardless of the pointing direction of the RVSDs.
When possible, the pole selected for the RVSD shall be where there is no guardrail or other type of barrier between the
pole and the rst lane of trac.
e RVSD shall not be installed in areas with overhead structures. For example, overhead sign bridges, tunnels and over-
passes should be avoided. e RVSD shall be mounted at least 30 ft. (9.1 m) to the side of any such overhead structures.
It is recommended that the manufacturer be consulted to verify nal RVSD placement if the RVSD is to be mounted near
large planar surfaces (sound barrier, building, parked vehicles, etc.) that run parallel to the monitored roadway.
2.3 Cabling. e cable end connector shall meet the MILC-26482 specication and shall be designed to interface with the
appropriate MIL-C-26482 connector. e connector backshell shall be an environmentally sealed shell that oers excellent
immersion capability. All conductors that interface with the connector shall be encased in a single jacket, and the outer
diameter of this jacket shall be within the backshell’s cable O.D. range to ensure proper sealing. e backshell shall have a
strain relief with enough strength to support the cable slack under extreme weather conditions. Recommended connectors
are Cannon’s KPT series, and recommended backshells are Glenair Series 37 cable sealing backshells.