Wavetronix SMARTSENSOR 105 Uživatelský manuál stáhnout pdf (Strana 10)

SmartSensor 105

SmartSensor 105 Installation

Specication

1.0 General. This item shall govern the installation of an

aboveground radar vehicle sensing device (RVSD) equivalent

to the Wavetronix SmartSensor 105.

RVSDs can provide accurate, consistent, and reliable data

provided they are installed properly. The requirements in this

specication are intended to ensure proper RVSD installation.

2.0 Mounting and Installation.

2.1 Mounting Assembly. The RVSD shall be mounted

directly onto a mounting assembly fastened to a pole or

other solid structure.

The RVSD mounting assembly shall provide the neces-

sary degrees of rotation to ensure proper installation.

The 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. The RVSD shall be mounted at

a height that is within the manufacturer’s recommended

mounting heights.

The RVSD shall be mounted at an oset from the rst lane

that is consistent with the RVSD’s minimum oset.

The RVSD shall be mounted so that the farthest lane to be

monitored is within the maximum range of the RVSD.

The 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.

The RVSD shall be aligned so that the horizontal angle is

within approximately ±2 degrees of perpendicular to the

ow of trac.

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 be-

tween the pole and the rst lane of trac.

The RVSD shall not be installed in areas with overhead

structures, namely tunnels and overpasses. The 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. The cable end connector shall meet the MIL-

C-26482 specication and shall be designed to interface

with the appropriate MIL-C-26482 connector. The connec-

tor 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 with-

in the backshell’s cable O.D. range to ensure proper seal-

ing. The 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.

The cable shall be the Orion Wire Combo-2207-2002-PVC-

GY or an equivalent cable that conforms to the following

specications:

● The RS-485 conductors shall be a twisted pair.

● The RS-232 and RS-485 conductors shall have nominal

capacitance conductor to conductor of less than 71pF/Ft

at 1 Khz.

● The RS-232 and RS-485 conductors shall have nominal

conductor DC resistance of less than 16.5 ohms/(304.8

m) at 68°F (20°C).

● The power conductors shall be one twisted pair with

nominal conductor DC resistance of less than 11.5

ohms/(304.8 m) at 68°F (20°C).

● Each wire bundle or the entire cable shall be shielded

with an aluminum/mylar shield with a drain wire.

The cable shall have a single continuous run with no

splices.

The cable shall be terminated only on the two farthest

ends of the cable.

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