Wavetronix SmartSensor Matrix Uživatelský manuál stáhnout pdf (Strana 8)

SmartSensor Matrix

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-2204-2002-PVC-

GY or an equivalent cable that conforms to the following

specications:

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

● The RS-485 conductors shall have nominal capacitance

conductor to conductor of less than 40 pF/ft at 1 kHz.

● The RS-485 conductors shall have nominal conductor

DC resistance of less than 16.7 ohms/1000 ft. (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/1000 ft. (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 be terminated only on the two farthest

ends of the cable.

The cable length shall not exceed 2000 ft (609.6 m) for

the operational baud rate of RS-485 communications (9.6

Kbps).

If 12 VDC is being supplied for the RPD then the cable

length shall not exceed 110 ft. (33.5 m).

If 24 VDC is being supplied for the RPD then the cable

length shall not exceed 600 ft. (182.9 m).

Both communication and power conductors can be

bundled together in the same cable as long as the above-

mentioned conditions are met.

SmartSensor Matrix Installation

Specication

1.0 General. This item shall govern the installation of an

aboveground radar presence detector (RPD) equivalent to the

Wavetronix SmartSensor Matrix.

RPDs can provide accurate, consistent, and reliable presence

detections provided they are installed properly. The require-

ments in this specication are intended to ensure proper RPD

installation.

2.0 Mounting and Installation.

2.1 Mounting Assembly. The RPD shall be mounted di-

rectly onto a mounting assembly fastened to a mast arm,

pole or other solid structure.

The RPD mounting assembly shall provide the necessary

degrees of rotation to ensure proper installation.

The RPD 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 RPD shall be mounted at a

height that is within the manufacturer’s recommended

mounting heights.

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

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

The RPD shall be mounted so that at least 20 feet along

the farthest lane to be monitored is within the eld view

of the RPD.

The RPD shall be mounted with its cable connector down

and shall be tilted so that the RPD is aimed at the center

of the lanes to be monitored. Typically, the RPD is tilted

o of vertical by 20–30 degrees.

The RPD shall be mounted on a vertical signal pole or on

the horizontal mast arm.

The RPD shall be mounted so that its eld of view is not

occluded by poles, signs or other structures.

RPDs that are mounted within 20 ft. (6.1 m) of each other

or that are monitoring the same intersection shall be con-

gured to operate on dierent RF channels regardless of

the pointing direction of the RPDs.

It is recommended that the manufacturer be consulted to

verify nal RPD placement if the RPD is to be mounted

near large planar surfaces (sound barrier, building,

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