Wavetronix VDR24 User Manual
DOC-0100-
00
Island Radar Company Part Numbers
Part Name
Part Number
Typical Quantity
SmartSensor™ - Rail Radar Sensor
RAD-0500-00
2
Vehicle Detection Radar Controller
RAD-0100-00
1
Extended Mounting Bracket, 48-Inch
MNT-0102-00
2
Mast Riser Cable
CAB-0100-00
2
Mast Base Junction Box
ENC-0100-00
2
Home Run Cable
CAB-0101-00
Up to 600 Feet per Sensor
VEHICLE DETECTION RADAR SYSTEM
®
VDR24
INSTALLATION AND OPERATION MANUAL
• Installation
• Configuration
• Operation
• Support
Troubleshooting
•
Document Number DOC-0100-00
Publication Date March 23, 2014
Rev 1.0
Island Radar Company, LLC
Island Radar
Wavetronix U.S. and international patents pending.
are registered
25055 West Valley Parkway, Suite 104
Olathe, Kansas 66061
(913) 543-3322
www.islandradar.com
© 2014 The Island Radar Company. All rights reserved. Protected by Island
Radar Company, LLC Patent Nos. 8,596,587, Wavetronix U.S. Patent Nos.
6,556,916; 6,693,557; 6,426,450; and 7,427,930. Other
Company and
Wavetronix, Smart Sensor, Click! and all associated logos are trademarks of
Wavetronix LLC. Island Radar and ‘get out of the road’
trademarks of The Island Radar Company, LLC. All other product or brand
names as they appear are trademarks or registered trademarks of their
respective holders.
Product specifications are subject to change without notice. This material is
provided for informational purposes only.
ii VDR24 Radar Detection System, Rev 1.0
Notices
DDAATTEE
1.0
March 23, 2014
Initial Issue
Proprietary Notice
This document and its contents are the property of the Island Radar Company. This document
has been furnished to you on the following conditions: no right or license under any patents or
any other proprietary right in respect of this document or its content is given or waived in
supplying this document. This document or its content are not to be used or treated in any
manner inconsistent with the rights of Island Radar Company, or to its detriment, and are not to
be copied, reproduced, disclosed to others, or disposed of except with the prior written consent
of the Island Radar Company.
Important Notice
The Island Radar Company constantly strives to improve our products and keep our customers
apprised of changes in technology. Following the recommendations contained in the attached
service manual will provide our customers with optimum operational reliability. The data
contained herein purports solely to describe the product, and does not create any warranties.
Within the scope of the attached manual, it is impossible to take into account every eventuality
that may arise with technical equipment in service. Please consult your local Island Radar
Company sales representative in the event of any irregularities with this product or system.
We expressly disclaim liability resulting from any improper handling or use of this equipment,
even if these instructions contain no specific indication in this respect. We strongly recommend
that only approved Island Radar Company spare parts are used as replacements.
Revision History
RREEVV..
NNAATTUURREE OOFF RREEVVIISSIIOONN
VDR24 Radar Detection System, Rev. 1.0 iii
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GEENNEERRAALL IINNFFOORRMMAATTIIOONN .................................................................................................................................................................. 1111
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INNSSTTAALLLLIINNGG TTHHEE VVDDRR2244 CCOONNTTRROOLLLLEERR ...................................................................................................................... 3333
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INNSSTTAALLLLIINNGG TTHHEE SSMMAARRTTSSEENNSSOORR--RRAAIILL MMAANNAAGGEERR .................................................................................... 3377
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POOWWEERR UUPP AANNDD UUSSEERR IINNTTEERRFFAACCEE NNAAVVIIGGAATTIIOONN .......................................................................................... 3399
Table of Contents
11.
G
1.1. Safety and Regulatory Information ............................................................................................ 11
1.2. FCC Part 15 Compliance ........................................................................................................... 11
1.3. Specifications ............................................................................................................................ 11
22.
I
2.1. About This Manual ..................................................................................................................... 14
2.2. Glossary and Terms .................................................................................................................. 15
2.3. Introduction to the Island Radar System Components .............................................................. 18
2.3.1. System Layout .............................................................................................................. 18
2.3.2. About the SmartSensor-Rail Radar Sensor .................................................................. 19
2.3.3. SS300 SmartSensor-Rail Views and Features ............................................................. 19
2.3.4. About the VDR24 Controller ......................................................................................... 21
2.3.5. Island Radar Accessory Components .......................................................................... 23
33.
I
3.1. Typical Radar Siting on Entrance or Exit Gate Masts ............................................................... 27
3.2. Radar Siting on Dedicated Poles ............................................................................................... 28
3.3. Radar Siting on Dedicated Poles for Train Detection at Crossovers ......................................... 28
44.
I
4.1. Mounting the Radar Sensor to the Pole or Mast ....................................................................... 29
4.2. Attaching the Sensor to the Mounting Bracket .......................................................................... 29
4.3. Aiming the Radar ....................................................................................................................... 30
4.4. Connecting the communication cable ........................................................................................ 31
4.4.1. Applying the Silicon Dielectric Compound .................................................................... 31
4.5. Connecting the Earth Ground Cable ......................................................................................... 31
4.6. Securing the Communications Cable and Earth Ground Cable ................................................ 31
55.
I
5.1. Physical Mounting of the Controller ........................................................................................... 33
5.1.1. DC Power Connection .................................................................................................. 33
5.1.2. Earth Ground Connection ............................................................................................. 33
5.2. Connecting the Radar Communication Cables to the Controller ............................................... 33
5.3. Connecting Railroad Signals to the Controller ........................................................................... 34
5.3.1. Crossing Relay Connections ........................................................................................ 34
5.3.2. Island Relay Connections ............................................................................................. 35
5.4. Connecting Controller Outputs to Other Equipment .................................................................. 35
5.4.1. Zone Detection Outputs ................................................................................................ 35
5.4.2. Health Outputs .............................................................................................................. 36
66.
I
77.
P
7.1. Final Checkout Before Initial System Power-up ........................................................................ 39
7.2. VDR24 Indicators, Keyboard, and Display Familiarization ........................................................ 39
7.2.1. Indicators ...................................................................................................................... 39
7.2.2. Display 39
7.2.3. Keyboard Viewport Navigation ..................................................................................... 40
7.3. Apply Initial Power and Basic Checkout .................................................................................... 43
iv VDR24 Radar Detection System, Rev 1.0
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SEETTTTIINNGG UUPP LLAANNEESS,, ZZOONNEESS,, AANNDD CCHHAANNNNEELLSS .................................................................................................. 4499
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MAAIINNTTEENNAANNCCEE AANNDD SSUUPPPPOORRTT ................................................................................................................................................ 6633
7.3.1. Verify VDR24 and Radar Status ................................................................................... 43
7.3.2. Verify XR and IR Circuits .............................................................................................. 44
7.3.3. Verify Radar Sensor Voltage Levels ............................................................................. 44
7.3.4. Connect SSM-Rail Application ...................................................................................... 45
88.
S
8.1. Connect the SSM-Rail application ............................................................................................. 50
8.1.1. Connect the SSM-Rail Application ................................................................................ 51
8.1.2. Locate Connected Sensors Using Full or Quick Search ............................................... 51
8.1.3. Verify the Radar Sensor is Connected ......................................................................... 51
8.2. Assign and Verify Radar Sensor Settings ................................................................................. 52
8.2.1. General Tab .................................................................................................................. 52
8.2.2. Communication Parameters Tab .................................................................................. 53
8.2.3. Advance Settings Tab ................................................................................................... 53
8.3. SSM-Rail Tab 1 - Establish Lanes for Traffic ............................................................................ 54
8.3.1. Orient Display to Match Physical Sensor Location ....................................................... 54
8.3.2. Verify Proper Physical Aiming of the Sensors .............................................................. 54
8.3.3. Set Lane Placement, Lane Widths, and Direction ........................................................ 54
8.3.4. Set Background Attenuation ......................................................................................... 55
8.4. SSM-Rail Tab 2 - Establish detection zones ............................................................................. 56
8.4.1. Create Physical Detection Zones ................................................................................. 57
8.4.2. Set Zone Delay and Extend Values .............................................................................. 58
8.4.3. Assign Zones to Output Channels ................................................................................ 58
8.4.4. Channel Settings .......................................................................................................... 58
8.4.5. Save Zone and Channel Settings ................................................................................. 58
8.5. SSM-Rail Tab 3 - Verify settings ............................................................................................... 59
8.5.1. Watch Vehicles Traversing the Crossing to Verify Proper Detection ............................ 60
8.5.2. Verify Connections to Railroad Equipment ................................................................... 60
8.5.3. Testing with a Test Vehicle ........................................................................................... 61
8.5.4. Back Up Configuration Settings and Values ................................................................. 61
99.
M
9.1. Periodic Radar Sensor Verification and Performance Checks .................................................. 63
9.1.1. Real-Time Detection Activity (Visual) ........................................................................... 64
9.1.2. VDR24 Indicator Status (Visual) ................................................................................... 64
9.1.3. Communication Quality ................................................................................................. 64
9.1.4. Examination of Performance Metrics ............................................................................ 65
9.1.5. 9.1.5 Detection Levels .................................................................................................. 65
9.1.6. Verification of Radar Alignment (Visual) ....................................................................... 65
9.1.7. Verify Runtime Metrics .................................................................................................. 66
9.1.8. Verification of Radar Positioning and Alignment ........................................................... 67
9.1.9. Verification of Zone Position and Boundaries ............................................................... 67
9.1.10.Verify Settings Against Backup Record ........................................................................ 67
9.1.11.Radar Self Tests ........................................................................................................... 68
9.1.12.Verification of Voltage Levels ....................................................................................... 69
9.1.13.Ground Leakage ........................................................................................................... 69
9.1.14.Re-Tighten Radar Mounting Hardware ......................................................................... 69
9.1.15.Check Radar Electrical Connections ............................................................................ 69
VDR24 Radar Detection System, Rev. 1.0 v
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ADDDDIITTIIOONNAALL IINNSSTTAALLLLAATTIIOONN OORR SSIITTEE IINNFFOORRMMAATTIIOONN ............................................................................ 7755
9.1.16.Configuration Re-Verification ........................................................................................ 69
9.2. Upgrading Radar Firmware ....................................................................................................... 70
9.2.1. Uploading and Installing New Radar Firmware ............................................................ 70
9.3. Backing Up and Restoring Radar Sensor Configuration Settings ............................................. 72
9.3.1. Creating a Backup ........................................................................................................ 72
9.3.2. Restoring Settings ........................................................................................................ 72
9.3.3. Restore Factory Settings .............................................................................................. 72
9.4. Contacting Island Radar Company for Assistance .................................................................... 73
9.5. Configuration Settings Chart ..................................................................................................... 74
1100.
A
vi VDR24 Radar Detection System, Rev 1.0
Figures
Figure 1 – SmartSensor Radar and VDR24 Controller ............................................................................... 13
Figure 2 - Overhead View of a Typical Crossing Installation ...................................................................... 18
Figure 3 -SmartSensor-Rail Radar Views ................................................................................................... 20
Figure 4 - Typical Radar Mounting and Connections ................................................................................. 21
Figure 5 - VDR24 Right Side View ............................................................................................................ 22
Figure 6 - VDR24 Left Side View ................................................................................................................ 23
Figure 7 - Sensor on Elevated Mount ........................................................................................................ 24
Figure 8 - Mast Riser Cable With Weatherproof Connector ....................................................................... 24
Figure 9 - Mast Base Junction Box ............................................................................................................ 25
Figure 10 - Typical, Overlapping Radar Detection Footprints ..................................................................... 27
Figure 11 - Radar Placement in Trapezoidal Crossing Configurations ...................................................... 27
Figure 12 - Radar Siting on Dedicated Poles ............................................................................................ 28
Figure 13 - Securing the Radar Sensors and Mounts to the Mast .............................................................. 29
Figure 14 - Weatherproof Connector and Earth Ground Connection ......................................................... 31
Figure 15 - Typical XR and IR Connections ............................................................................................... 34
Figure 16 - Typical Zone and Health Output Connections .......................................................................... 35
Figure 17 - SSM-Rail Version Information .................................................................................................. 37
Figure 18 - Radar Firmware Version Information Revealed by the SSM-Rail ............................................ 38
Figure 19 - Keyboard Descriptions and Functions ...................................................................................... 40
Figure 20 - Menu Structure and Navigation ................................................................................................ 41
Figure 21 - Front Panel Keyboard/Display Navigation ............................................................................... 42
Figure 22 - System Initialization Display .................................................................................................... 43
Figure 23 - Home Screen .......................................................................................................................... 43
Figure 24 - Measuring XR and IR Voltage Levels ...................................................................................... 44
Figure 25 - Confirming Radar Voltage Levels ............................................................................................. 44
Figure 26 - RS-232 Configuration Port ....................................................................................................... 45
Figure 27 - SSM-Rail Home Page Controls ................................................................................................ 45
Figure 28 - Setting SSM-Rail Communication Parameters ........................................................................ 46
Figure 29 - Search Discovers Connected Radar Sensors .......................................................................... 46
Figure 30 - Verification of Connected Radar Sensor .................................................................................. 47
Figure 31 - SSM-Rail Sensor Settings General Tab ................................................................................... 52
Figure 32 - SSM-Rail Sensor Settings Comm Tab ..................................................................................... 53
Figure 33 - SSM-Rail Sensor Settings Advanced Tab ................................................................................ 53
Figure 34 – Lane Setup on SSM-Rail Tab 1 ............................................................................................... 54
Figure 35 - Setting Lanes Attributes SSM-Rail Tab 1 ................................................................................. 55
VDR24 Radar Detection System, Rev. 1.0 vii
Figure 36 – Accessing Attenuation Adjustment .......................................................................................... 55
Figure 37 - Adjusting Attenuation and Sensitivity ....................................................................................... 56
Figure 38 - Clear Storage Distance ............................................................................................................ 56
Figure 39 - Optimum Location of Detection Zone Boundaries .................................................................... 57
Figure 40 - Position Detection Zone Boundaries Using a Human Tracker ................................................. 57
Figure 41 - Setting the Zone's Delay and Extend Parameters .................................................................... 58
Figure 42 - Mapping or Assigning a Zone to an Output Channel ............................................................... 58
Figure 43 - Setting Up the SSM-Rail Display for Verification ...................................................................... 59
Figure 44 - Viewing Communication Quality Metrics .................................................................................. 64
Figure 45 - Co-Incident Detection Metrics .................................................................................................. 65
Figure 46 - Accessing the System Runtime Metric ..................................................................................... 66
Figure 47 - Accessing WatchDog (WD) Timer Reset Metrics ..................................................................... 66
Figure 48 - Accessing Radar Sensor Self Test Function ............................................................................ 68
Figure 49 - SSM-Rail Indication that Firmware Upgrades are Available .................................................... 70
Figure 50 – Downgrade Warning ................................................................................................................ 70
Figure 51 - Accessing Configuration Backup and Restore Functions ........................................................ 72
viii VDR24 Radar Detection System, Rev 1.0
Tables
Table 1 - Radar Sensor Operating Specifications ...................................................................................... 11
Table 2 - Radar Sensor Mechanical Specifications .................................................................................... 12
Table 3 - VDR24 Operating Specifications ................................................................................................. 12
Table 4 - VDR24 Mechanical Specifications ............................................................................................... 12
Table 5 - Glossary of Terms ....................................................................................................................... 15
Table 6 - Radar Cable Color Coding .......................................................................................................... 34
Table 7 - Recommended Periodic Maintenance Schedule ......................................................................... 63
Table 8 - Configuration Settings Chart ....................................................................................................... 74
VDR24 Radar Detection System, Rev. 1.0 ix
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x VDR24 Radar Detection System, Rev 1.0
General Information
Taabbllee 11 -- RRaaddaarr SSeennssoorr OOppeerraattiinngg SSppeecciiffiiccaattiioonnss
System Power Source Voltages
8 Vdc to 30 Vdc, 10W
Temperature Range
-40° C to +70°C
Humidity
0% to 95% non-condensing per AREMA 11.15.1
Vibration
Per AREMA 11.15.1
EMI
Per AREMA 11.15.1
Isolation and Protection
Per AREMA 11.3.3
Important notes, advisories or guidance are highlighted with a gray background.
11.. GGEENNEERRAALL IINNFFOORRMMAATTIIOONN
1.1. Safety and Regulatory Information
Read and thoroughly understand this manual before attempting any of the procedures listed.
Pay particular attention to:
These headings may appear throughout this manual. Caution statements indicate conditions
that could cause damage to equipment. Important notes, advisories or guidance are highlighted
with a gray background. Always observe standard precautions familiar to trained electrical
technicians, and always adhere to all safety regulations stipulated by the railroad.
1.2. FCC Part 15 Compliance
This equipment has been tested and found to comply with the limits for a Class A digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference when the equipment is operated in a commercial
environment. This equipment generates, uses, and can radiate radio frequency energy and, if
not, installed and used in accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this equipment in a residential area is likely
to cause harmful interference in which case the user will be required to correct the interference
at user’s own expense.
CAUTION
and
Operation is subject to the following two conditions: (1) this device may not cause harmful
interference and (2) this device must accept any interference received including interference
that may cause undesired operation. This Class A digital apparatus meets all requirements of
the Canadian interference causing equipment regulations. This Category II radiocommunication
device complies with Industry Canada Standard RSS-310. Ce dispositif de radiocommunication
de categorie II respecte la norme CNR-310 d’Industrie Canada.
1.3. Specifications
The Radar sensors and centralized controller (VDR24) meets all applicable environmental, EMI,
and vibration tolerance specifications for AREMA Class B and C equipment.
T
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VDR24 Radar Detection System, Rev. 1.0 11
General Information
Height
11 inches
Width
13 inches
Depth, including connectors
3.5 inches
Weight
3 lbs.
Mounting
18 to 22 feet height, on approved
foreground structures
Taabbllee 33 -- VVDDRR2244 OOppeerraattiinngg SSppeecciiffiiccaattiioonnss
System Power Source Voltages
8 Vdc to 30 Vdc, 30W
Temperature Range
-40° C to +70°C
Humidity
0% to 95% non-condensing per AREMA 11.15.1
Vibration
Per AREMA 11.15.1
EMI
Per AREMA 11.15.1
Isolation and Protection
Per AREMA 11.3.3
Taabbllee 44 -- VVDDRR2244 MMeecchhaanniiccaall SSppeecciiffiiccaattiioonnss
Height
6 inches
Width (including mounting flanges)
8 inches
Depth
3 inches
Weight
1.5 lbs.
Recommended Mounting Clearance Width
5 inches each side, 18 inches total
Mounting Method
Flange mounting, four screws, vertically on a
wood or other non-conductive surface
TTaabbllee 22 -- RRaaddaarr SSeennssoorr MMeecchhaanniiccaall SSppeecciiffiiccaattiioonnss
PPAARRAAMMEETTEERR
mounting bracket, unobstructed by any
VVAALLUUEE
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12 VDR24 Radar Detection System, Rev 1.0
Introduction and Overview
Fiigguurree 11 –– SSmmaarrttSSeennssoorr RRaaddaarr aanndd VVDDRR2244 CCoonnttrroolllleerr
22.. IINNTTRROODDUUCCTTIIOONN AANNDD OOVVEERRVVIIEEWW
The Island Radar Company is pleased to provide this radar-based vehicle and train detection
radar solution, powered by rugged and proven Wavetronix SmartSensor© Matrix sensors, with
railroad specific application enhancements. This system is designed to provide reliable and
failsafe detection of vehicles without the negative consequences associated with maintaining
buried loop technologies. Unaffected by precipitation, temperature, fog, and varying light
conditions, this technology is at work in tens of thousands of Intelligent Transportation System
(ITS) applications worldwide.
The system is comprised of two (and in some cases, more) SmartSensor-Rail radar sensors
connected to a centralized controller, the VDR24. The VDR24 controller communicates with
each connected radar sensor every 60msec to verify operability and to instantly get information
regarding vehicle presence in any of up to 10 lanes of traffic containing up to16 configurable
detection zones. The VDR24 controller’s AREMA-compliant isolated outputs are intended to
connect to a crossing controller or any other equipment needing an indication of vehicle or train
presence in these user configurable zones.
F
Two radars are used to provide 100% redundancy of the detection zone areas, a reliability
feature available with no other detection system. Each radar sensor communicates with a
separate output processor within the VDR24 controller, and a third supervisory processor
monitors and double-checks every radar message and the resultant output processor’s
response. This “no single point of failure” vital architecture is unique to the Island Radar Vehicle
Detection solution – a performance attribute unavailable with any other form of vehicle
detection.
VDR24 Radar Detection System, Rev. 1.0 13
Introduction and Overview
The Island Radar Company is committed to providing support and assistance to assure that the
quality and the functionality of this vehicle detection system exceeds your expectations. In
fulfilling that objective, we encourage you to contact us regarding any difficulties or additional
needs you may encounter. The Island Radar, nation-wide technical support organization is
available 24 hours per day at (913) 543-3322.
2.1. About This Manual
This service manual covers topics pertaining to the mechanical and electrical installation and
checkout of the radar sensors and the VDR24 controller. The Island Radar detection system
may be used to detect vehicles at crossings as well as detecting trains at crossovers and
interlocks. Accordingly, this manual describes the setup and configuration in the context of
railroad crossings. Where necessary additional guidance is provided for train detection use
cases.
Step-by-step instructions for installation and setup are provided in this manual, which is
organized into eight sections:
Section 1: General Information
The previous section provides general information about this Installation and Operation manual,
as well as regulatory and environmental specifications.
Section 2: Introduction and Overview
This section (the one you’re reading now) provides an overview of the radar-based detection
system and a description of the underlying technology, failsafe design, and vital-architecture.
Section 3: Installation and Sensor Siting Guidelines
This section provides instructions on where to mount radar sensors to achieve the best
coverage of vehicle detection zones, whether on exit gate masts, entrance gate masts, or on
dedicated masts adjacent to the crossing. Pole siting guidance for train detection at crossovers
is also provided.
Section 4: Installing the Radar Sensors and the Communication Cables
This section provides details on how to connect the radar sensors atop their 18-20 foot masts to
junction boxes at the mast bases, and to home run cables leading to the crossing equipment
bungalow where the VDR24 controller is located. Guidance on aiming the radar sensors is also
provided.
Section 5: Installing and Connecting the VDR24 Controller
This section covers installation and connection of the VDR24 controller that is typically located
in the crossing’s equipment bungalow.
Section 6: Installing the SmartSensor-Rail Manager
The SmartSensor-Rail Manager is a software application that runs on a laptop PC. This
Windows based application is used configure the radar sensors so that each is monitoring the
same traffic lanes and detection zones. This section covers installation of this software on the
computer.
Section 7: Power up and Communications
Following installation of radar sensors and the VDR24 controller, this section provides
instructions on how to initially power the system and verify operation.
Section 8: Setting up Lanes, Track, Zones, and Output Channels
14 VDR24 Radar Detection System, Rev 1.0
Introduction and Overview
Taabbllee 55 -- GGlloossssaarryy ooff TTeerrmmss
Term
Description
Attenuation
Designated in unitless decibels (dB), attenuation is a relative
decrease in sensitivity, Lower attenuation means greater
AREMA
The American Railway Engineering and Maintenance-of-Way
ion (AREMA) is a North American railway industry
group. It publishes recommended practices for the design,
construction and maintenance of railway infrastructure, which
Channels
For the purposes of the Island Radar detection system, Output
Channels are the isolated interface point between Detection
Clear Storage Distance
The six-foot minimum space between the outermost rails and
Closed Contacts
For the purposes of the Island Radar detection system, a
Crossing Island
The area bounded by entrance and exit gates at a grade
Crossovers or Interlockers
A switchless interface between two or more tracks. For the
purposes of the Island Radar detection system, a crossover is
Using the SmartSensor-Rail Manager application, this section provides instructions on how to
configure and verify lanes, detection zones, output assignments, and operating parameters for
crossing applications. For train detection applications, track paths are established in lieu of
lanes for vehicles.
Once installed, the operational status and health of the system can be assessed by examining
performance data visible on the VDR24 controller front panel display. Many different screens
are viewable showing real-time performance parameters such as co-incident detection, radar
sensor response times, communication quality, and accumulated, historical performance
metrics.
Section 9: Support, Maintenance, Troubleshooting
This section provides information on maintenance and how to obtain troubleshooting assistance
and user support. The Island Radar Company provides knowledgeable and experienced
support through its field support resources, which is available for assistance 24 hours per day.
Section 10: Additional Installation or Site Information
This section provides special notes or information on equipment modifications unique to a
particular application.
2.2. Glossary and Terms
Some of the terms are used in this manual have connotations that are specific to the railroad
industry or the Island Radar vehicle detection system.
T
sensitivity while higher attenuation means less sensitivity.
Associat
are requirements in the United States and Canada.
Zones and Railroad equipment. See Lanes and Zones.
a lowered entrance or exit gate at a grade crossing.
closed contact is an isolated, solid state, electrical switch that
establishes a connection and conducts current.
crossing through which a roadway passes.
VDR24 Radar Detection System, Rev. 1.0 15
Introduction and Overview
a location where the radar based detection system may be
Delay Time
For the purposes of the Island Radar detection system, delay
an established zone must be present before the VDR24
Controller passes that condition to an Output Channel for
Device USB Port
A Type B connector effecting a USB interface where a
connected Host USB port supplies power and manages the
communications, e.g. a device that is controlled by a laptop
Dry Inputs and Outputs
Unpowered contacts or switches. In order for Dry Contacts to
control (e.g. a relay) a power source must be
Extend time
For the purposes of the Island Radar detection system, extend
Firmware
Microprocessor executable code that defines the operations
Host USB Port
A Type A connector effecting a USB interface that [provides
e.g. a laptop computer that is connected to a device being
IR Circuit
Abbreviation for Island Relay Circuit, generally a series
combination of vital relays that signals when a train is
occupying any section of track over a Crossing Island.
Railroad failsafe convention specifies that the series contacts
the series
ITS
Intelligent Transportation System, the general category of
Lanes
For the purposes of the Island Radar detection system, Lanes
When the system is used for train detection at Crossovers,
MTCD
Minimum Track Clearance Distance is the entire Crossing
Open Contacts
For the purposes of the Island Radar detection system, an
open contact is an isolated, solid state, electrical switch that
ction and therefore does not
used to detect trains on track circuit dead sections.
is the time period during which a continuous detection state on
signaling to railroad equipment.
computer USB Port.
provide
externally provided.
is the additional time period that a Channel Output remains in
an active detection state following a valid detection event. It is
intended to assure that a minimum pulse width signal is made
available to connected Railroad Equipment.
and operating parameters of a device.
power and manages communications to a USB Device Port,
controlled by an application residing on the computer.
are closed when no train is present and that
contacts open when a train is present.
systems that provide highway and rail traffic operational data,
including radar based sensing devices.
are the pathways where vehicles are intended to be detected.
Lanes are synonymous with tracks. See Channels and Zones.
Island Area, the formal railroad industry name for the Crossing
Island area
does not establish a conne
conduct current.
16 VDR24 Radar Detection System, Rev 1.0
Introduction and Overview
Radar Cross Section
The relative signal strength of reflected radar emissions off of
Railroad Equipment
For the purposes of the Island Radar detection system,
Railroad Equipment includes crossing controllers, relay logic,
and vital processors that utilize vehicle or train detection to
crossing warning system gates or signal aspects for track
RS-232
A one-to-one serial communication standard. For the
RS-485
A multi-drop serial communication standard. For the purposes
485 circuits are
used between the VDR24 Controller and the radar sensors.
communications reliably over long distances with
Shield or Drain
A common electrical conductor used to suppress noise and
SmartSensor Manager – Rail
A PC application for configuring the behavior of radar sensors
and establishing detection Lanes, Zones, and output
SmartSensor-Matrix
The general class of Wavetronix sensors containing multiple
SmartSensor-Rail
A specific firmware version of the SmartSensor-Matrix
hardware that contains performance features specially
XR Circuit
Abbreviation for Crossing Relay Circuit, generally the primary
energized by a train detection, causes
activation of the Crossing Warning System. Railroad failsafe
convention specifies that the XR relay contacts are closed
to be activated and open
Zones
For the purposes of the Island Radar detection system, Zones
are individual areas which, when a detection state is
confirmed, cause an associated output Channel or Channels
ening the contacts associated with those
a vehicle or structure. When measured and compared against
background signals, meaningful levels of reflected energy are
the first step in the detection analysis process.
perform other functions such as changing the position of grade
circuit dead sections.
purposes of the Island Radar detection system, an RS-232
communication link is used to configure the radar sensors.
of the Island Radar detection system, RS-
An important attribute of RS-485 circuits is their ability to pass
high-speed
high immunity to electrical noise and interference.
or SSM-Rail
interference in communication cables.
Channels.
solid-state radar sensors in a single package.
intended for railroad applications.
relay which, when de-
when the crossing is not intended
when the crossing is activated.
to be activated, op
output Channels. See Channels and Lanes.
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Introduction and Overview
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2.3. Introduction to the Island Radar System Components
2.3.1. System Layout
Each radar sensor has a detection footprint that is quarter-circle shaped, 90 degrees by 140
feet. Within this detection footprint up to 10 lanes of traffic may be configured with up to 16 foursided polygon detection zones. Each of these zones is correlated to one of four isolated outputs
that are connected to the crossing controller or other equipment.
The Island Radar system is designed to utilize one sensor on each side of the crossing island,
for instance, one on each exit gate mast or one on each entrance gate mast. Optionally, the
radar sensors can be mounted on dedicated masts but they should be in line with and spaced
no more than 10 feet away from the exit or entrance gate masts. In this manner, both radars can
be configured to monitor the same lanes of traffic and the same detection zones. The VDR24
controller, typically located in the crossing bungalow, will combine these outputs together so that
the radar devices operate with 100% redundancy.
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The sensors are optimally mounted at a height of 18-22 feet above the roadway. Since most
gate masts are a maximum of 15 feet, Island Radar provides a 48-inch Extended Mounting
Bracket that can be clamped to the crossing gate mast. In the case of train detection at
crossovers, where poles may be greater than 20 feet in height, Island Radar can provide radar
sensor mounts that can extend horizontally from the top of taller poles without extending the
sensors vertically.
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Introduction and Overview
More detailed instructions regarding the physical placement and electrical installation of the
radar masts and sensors may be found in Section 3 - Installation and Sensor Siting
Guidelines and in Section 4 - Installing the Radar Sensors and the Communication
Cables.
2.3.2. About the SmartSensor-Rail Radar Sensor
The SmartSensor-Rail radar sensor is a sophisticated device that combines sixteen solid-state
24GHz radars into a single, rugged package. These radar arrays establish a detection footprint
that is quarter-circle shaped, measuring 90 degrees by 140 feet. The sensor is proven in
thousands of Intelligent Traffic System (ITS) applications worldwide and has been uniquely
adapted and optimized for railroad detection applications. The following figure shows the
primary features of the radar including:
2.3.2.1. Front Emitter Surface
The front of the radar sensor is aimed at the center of the crossing from an elevation of 18-22
feet to achieve an optimum detection vantage point.
2.3.2.2. Mast Riser Cable Connector
A weatherproof, avionics-class connector accepts the plug at the top end of the 7-conductor,
Mast Riser Cable. This connection links the radar sensor to the bungalow-mounted VDR24
controller.
2.3.2.3. Earth Ground Lug
The radar sensor is protected from transients induced by lighting and other sources through the
Earth Ground Lug on the rear of the radar enclosure. It is very important that this ground be
established to a solid and viable earth ground at the base of the mast.
2.3.2.4. Aiming Guide
Aiming the radar is easy due to its very wide detection footprint. But the Aiming Guide
embossed into the top and bottom of the radar sensor’s enclosure provides an easy way to
visually point the radar sensor in the proper horizontal (left/right) direction.
2.3.2.5. Multi-Axis Mounting Bracket
The mounting plate on the rear of the radar, along with the adjustable settings provided on the
mast mounting bracket provide secure, multi-axis positioning of the radar sensor head above
the crossing island detection zones.
2.3.3. SS300 SmartSensor-Rail Views and Features
Front, back, and bottom views of the SmartSensor-Rail are shown on the following page.
VDR24 Radar Detection System, Rev. 1.0 19
Introduction and Overview
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90o Footprint Aiming Guide
16 Solid State Radar
Sensor Bracket Mounting
Emitters
Features
Communication Cable Connector
Earth Ground Lug
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Introduction and Overview
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2.3.4. About the VDR24 Controller
2.3.4.1. How the System is Connected
Connections from each radar sensor are brought down the mast through the Mast Riser Cable,
which is terminated at the mast base in the Mast Base Junction Box. Here, the seven
conductors in the cable are connected to Home Run Cable that ultimately connected to the
VDR24 Controller radar inputs in (or near) the bungalow. The Home Run Cable may be up to
500 feet in length and may be run beneath the roadway and rails, as necessary, through bored
conduit passageways or may be strung overhead suspended by messenger cable similar to
utility cabling. If your application requires a cable length longer than 500 ft. (152.4 m), contact
Island Radar Company support for assistance.
F
VDR24 Radar Detection System, Rev. 1.0 21
Introduction and Overview
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Display Port
2.3.4.2. The VDR24 Controller Description
The VDR24 Controller is a multi-processor device that is designed expressly for demanding
railroad applications. Each radar sensor connects to an individual input and communicates
vehicle presence and radar health information sixteen times per second to its own dedicated
processor. Each radar processor instantly provides isolated Zone detection outputs to crossing
controller equipment, Exit gate Management Systems, or communication devices. An “open”
output signifies that a vehicle has been detected in a specific Zone and a “closed’ output
designates that the Zone is clear.
The VDR24 provides up to four separate Zone outputs and the device is typically configured in
such a manner that both radars are watching the same Zones, with their Zone outputs
combined together, but from opposite side of the crossing island.
2.3.4.3. Constant Monitoring, Failsafe Operation
Each radar sensor and its dedicated radar processor also analyze several continually running
processes that access radar and system health. Any missed communications from the radar
sensor, any failed internal health check process, or any loss of power instantly drives the
VDR24 into a failsafe state, opening all Zone outputs as well as the affected radar’s Health
output.
2.3.4.4. Vital Architecture – No Single Point of Failure
By utilizing separate processors for each radar sensor, the Island Radar detection solution
achieves a uniquely vital architecture with no single point of failure. This is in addition to the
100% redundancy afforded by utilizing two radar devices, both monitoring the same detection
zones from complimentarily positioned points on each side of the crossing island.
A third processor monitors and oversees the functions of the individual radar processors. This
system processor listens to communications emanating from the radar sensors and verifies that
each radar processor makes the proper decisions as the output states of the Zone outputs
reflect the presence/clear information communicated by the radar sensors.
Keyboard Navigation
Zone and Health Indicators
RS-232 Configuration Port
Power Terminal
F
22 VDR24 Radar Detection System, Rev 1.0
Introduction and Overview
IR and XR Inputs
Radar 2 Input
Detection Zone Outputs
Health Outputs
Radar 1 Input
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2.3.4.5. Front Panel
The VDR24 Controller front panel provides indicators that show detection and radar
communications events. A combination keyboard and display provide a viewport into the
internal operation of the unit, where real time and historical performance metrics may be
reviewed during regular maintenance visits.
2.3.4.6. Radar Inputs, Detection Zone Outputs
On the left side of the VDR24 Controller are pluggable, cage-clamp connectors for terminating
Home Run Cable wiring from the radar sensors. AREMA compliant, isolated contact pairs are
provided for four Zone outputs as well as a Health circuit for each radar sensor. Two-wire,
isolated, dry input terminals are provided for Island Relay and Crossing Relay signals from the
railroad crossing bungalow electronics. By using these signals the VDR24 is able to ignore the
many detection events that occur when a train is moving through the crossing island. This helps
to preserve the value of the historical metrics accumulated by the system by registering only
valid vehicle detection events.
2.3.4.7. Power and Communications Connections
On the right side of the VDR24 are power connections (9-36VDC) and several communications
ports. These ports include Ethernet, RS232, RS485, and both a Host and Device USB port.
These ports are used for various configuration and networking functions described later in this
manual.
2.3.4.8. Mounting Flanges
The VDR24 is typically wall-mounted at eye level for optimum viewing, using the mounting
flanges provided on the back left and right side of the device.
2.3.5. Island Radar Accessory Components
There are a number of additional accessory components associated with the installation and
operation of the Island Radar vehicle detection solution.
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Introduction and Overview
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2.3.5.1. Radar Sensor Mounting Brackets
Island Radar provides several different types of mounting
brackets for positioning the radar sensors at the right height
and location above the crossing.
2.3.5.1.1. Elevated Mounting Brackets (MNT-0101-00)
The optimum vertical height for the radar sensors is between
18 and 22 feet. The most convenient location to mount the
devices is atop the exit or entrance gate masts, which are
typically a maximum of 15 feet in height. The primary mounting
fixture for most applications, the Elevated Mounting Bracket
provides an additional 48 inches of elevation and provides a
universal joint sensor mounting mechanism to properly position
the radar sensor above, to the side, and just within Minimum
Track Clearance Distance Zone (MTCD) of the crossing island.
2.3.5.1.2. Standard Mounting Brackets (MNT-0100-00)
The standard mounting bracket is intended for use on poles
that are already between 18-22 feet in height and therefore do
not require additional elevation. The standard mounting
bracket positions the radar sensors 12 inches (horizontally)
into the crossing area.
2.3.5.1.3. Extended Mounting Brackets (MNT-0102-00)
The extended mounting bracket is intended for use on poles
that are already between 18-22 feet in height but require
additional horizontal extension for positioning the radar
sensors (horizontally) into the crossing area.
2.3.5.2. Mast Riser Cable
To separate the longer Home Run
Cable from the connection that is made
to the radar sensor at the top of the
mast, a shorter Mast Riser Cable is
provided. At the sensor end of this
cable is a preassembled, weatherproof,
avionics-class plug that is latched into
the sensor connector. At the mast base
this cable is connected to a transitional
interface in the Mast Base Junction Box
where it is connected to the Home Run
Cable for connection to the VDR24 in or
near the crossing equipment bungalow.
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24 VDR24 Radar Detection System, Rev 1.0
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