SICK Free Flow Profiler User manual

OPERATING INSTRUCTIONS
FREE FLOW PROFILER
Proling systems

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Product described
Product name: Free Flow Profiler
Document identification
Title: Operating instructions for Free Flow Profiler
Part number: 8020776/12AX
Status: 2019-05-31
Manufacturer
SICK AG
Erwin-Sick-Str. 1 · 79183 Waldkirch · Germany
Trademarks
IBM is a trademark of the International Business Machine Corporation.
MS-DOS is a trademark of the Microsoft Corporation.
Windows is a trademark of the Microsoft Corporation.
Other product names in this document may also be trademarks and are
only used here for identification purposes.
Original documents
The German version 8020775/12AX of this document is an original
SICK AG document.
SICK AG does not assume liability for the correctness of any unauthorized
translation.
In case of doubt, contact SICK AG or your local agency.
Legal notes
Subject to change without notice
© SICK AG. All rights reserved

CONTENTS
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Contents
1About these operating instructions................................................................................7
1.1 Described software versions ...............................................................................7
1.2 Purpose of this document....................................................................................7
1.3 Target group .........................................................................................................7
1.4 Information depth ................................................................................................8
1.5 Abbreviations used...............................................................................................8
1.6 Symbols used .......................................................................................................9
2On safety......................................................................................................................... 10
2.1 Qualified safety personnel................................................................................ 10
2.2 Applications of the system................................................................................ 10
2.3 Intended use...................................................................................................... 11
2.4 General safety notes and protective measures .............................................. 12
2.4.1 Safety notes and symbols ................................................................. 12
2.4.2 General safety notes.......................................................................... 13
2.4.3 Potential hazardous points................................................................ 14
2.5 Protecting the environment .............................................................................. 17
3System description ........................................................................................................ 18
3.1 The measurement site ...................................................................................... 19
3.1.1 Typical layout of the measurement site............................................ 19
3.1.2 Possible layouts ................................................................................. 20
3.2 The system components in detail .................................................................... 24
3.2.1 2D LiDAR sensors .............................................................................. 24
3.2.2 Traffic Controller FPS ......................................................................... 24
3.3 System operating principle ............................................................................... 25
3.3.1 Operating principle of vehicle detection ........................................... 25
3.3.2 Operating principle of the function for calculating the vehicle
dimensions ......................................................................................... 27
3.3.3 Operating principle of the vehicle classification function................ 29
3.3.4 Operating principle of the vehicle axle counting function ............... 30
3.3.5 Emission of object location messages.............................................. 32
3.3.6 Data processing in the Traffic Controller FPS................................... 33
3.3.7 Output data ........................................................................................ 34
3.4 System interfaces.............................................................................................. 36
3.4.1 Integration into existing IT infrastructure ......................................... 37
3.4.2 Site view in TEMS Manager ............................................................... 38
3.4.3 Plug-ins for saving and downloading the vehicle data..................... 39
3.4.4 Downloading log files......................................................................... 41
3.5 Project planning ................................................................................................ 42
3.5.1 General system requirements ........................................................... 42
3.5.2 Requirements for vehicles................................................................. 42
3.5.3 General requirements at the measurement site.............................. 43
3.5.4 Requirements for mounting the vehicle detection
components........................................................................................ 43
3.5.5 Requirements for mounting the axle counting components ........... 44
3.6 Status indicators ............................................................................................... 48
3.6.1 Status indicators for the 2D LiDAR sensors ..................................... 48
3.6.2 Status indicators and controls on the Traffic Controller FPS .......... 48

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4Mounting .........................................................................................................................49
4.1 Mounting 2D LiDAR sensors .............................................................................49
4.1.1General advice ....................................................................................49
4.1.2 Mounting positions of the 2D LiDAR sensors ...................................50
4.1.3 Mounting accessories for the LMS511 2D LiDAR sensor................52
4.2 Mounting the Traffic Controller FPS..................................................................55
4.3 Mounting the Ethernet switch ...........................................................................55
5Electrical installation.....................................................................................................56
5.1 General advice ...................................................................................................56
5.2 Wiring overview ..................................................................................................56
5.3 Connecting the Traffic Controller FPS...............................................................57
5.3.1 Connections on the Traffic Controller FPS ........................................57
5.3.2 Connecting to the voltage supply.......................................................58
5.3.3 Connection to Ethernet switch ...........................................................59
5.3.4 Connecting to the customer interface ...............................................59
5.4 Connecting the Ethernet switch to the voltage supply ....................................60
5.5 Connecting the 2D LiDAR sensors ....................................................................60
5.5.1 Connections on the 2D LiDAR sensor................................................60
5.5.2 Connecting to the voltage supply.......................................................61
5.5.3 Connection to Ethernet switch ...........................................................62
5.6 SICK connecting cables .....................................................................................63
6Commissioning ...............................................................................................................64
6.1 Starting the profiling system .............................................................................64
6.2 Connecting to TEMS Manager...........................................................................64
6.3 Configuring the IP address of the Traffic Controller FPS .................................65
6.4 Setting up the site configuration with the wizard.............................................68
6.4.1 Selecting components ........................................................................69
6.4.2 Specifying the measurement site layout ...........................................70
6.4.3 Selecting a region ...............................................................................71
6.4.4 Defining the classification system .....................................................72
6.4.5 Completing site configuration ............................................................73
6.5 Working in TEMS Manager ................................................................................74
6.5.1 The user interface...............................................................................74
6.5.2 Displaying the measurement site ......................................................77
6.6 Adapting system functions to the measurement site......................................80
6.6.1 Configuring the measurement site ....................................................80
6.6.2 Configuring system functions for vehicle detection..........................83
6.6.3 Configuring system functions for axle counting ................................90
6.7 Working in expert mode.....................................................................................93
6.7.1 Displaying the system parameters and system status.....................93
6.7.2 Displaying system functions for vehicle classification .....................95
6.7.3 Working with the Axle Overruler.........................................................96
6.7.4 Configuring plug-ins ............................................................................96
6.8 Running the configuration .............................................................................. 100
6.8.1 Checking operational readiness ..................................................... 101
6.8.2 Displaying measurement points ..................................................... 103
6.8.3 Displaying the device status ........................................................... 104
6.8.4 Switching back to editing mode...................................................... 104
6.8.5 Saving the configuration on the hard drive .................................... 105

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6.9 Checking that measuring mode is working properly ..................................... 106
6.9.1 Displaying vehicles with measured values .....................................106
6.9.2 Saving vehicle data .......................................................................... 108
6.9.3 Accessing detailed information about a vehicle ............................108
6.10 Downloading log files ......................................................................................117
6.11 Updating the TEMS Recorder and packages .................................................120
6.11.1 Displaying information on the TEMS Recorder...............................120
6.11.2 Updating the TEMS Recorder ..........................................................121
6.11.3 Updating packages ..........................................................................122
6.12 Using the TEMS Info interface ........................................................................ 123
6.13 Installing the security certificate for the HTTPS connection .........................125
6.13.1 Uploading the supplied HTTPS certificate ...................................... 125
6.13.2 Uploading your own HTTPS certificate ............................................ 127
6.14 Extending/changing the site........................................................................... 128
6.14.1 Adding system components ............................................................128
6.14.2 Adding a second road ......................................................................132
6.14.3 Configuring an additional LMS Length in an offset position .........134
6.14.4 Using a configuration file to load system parameters ................... 136
7Maintenance ................................................................................................................137
7.1 Overview of maintenance tasks .....................................................................137
7.2 Maintenance during operation .......................................................................138
7.2.1 Visual inspection .............................................................................. 138
7.2.2 Cleaning the 2D LiDAR sensors ......................................................139
7.3 Replacing components ...................................................................................140
7.3.1 Basic procedure ............................................................................... 140
7.3.2 Replacing the 2D LiDAR sensors ....................................................141
7.3.3 Replacing the Traffic Controller FPS ...............................................141
7.3.4 Updating the measurement site .....................................................142
8Fault diagnosis ............................................................................................................ 146
8.1 SICK Support ................................................................................................... 146
8.2 Fault indicators at component level............................................................... 147
8.2.1 Fault indicator for the 2D LiDAR sensors ....................................... 147
8.2.2 Traffic Controller FPS fault indicators ............................................. 147
8.3 Fault indicators at system level...................................................................... 148
8.3.1 Fault diagnosis in TEMS Manager................................................... 149
8.3.2 Fault diagnosis via the TEMS Info interface ...................................154
8.3.3 Detecting system errors using log files...........................................154
8.3.4 Providing raw data to help Support................................................. 154
8.3.5 Sensor component failures .............................................................156
8.4 Typical fault situations ....................................................................................157
9Annex ............................................................................................................................ 159
9.1 Technical data .................................................................................................159
9.1.1 FPS data sheet .................................................................................159
9.1.2 Excerpt from the Traffic Controller FPS data sheet........................159
9.1.3 Excerpt from the LMS511 SE data sheet .......................................159
9.2 Dimensional drawings..................................................................................... 160
9.2.1 Dimensional drawing for LMS511 SE 2D LiDAR sensor................ 160
9.2.2 Dimensional drawings for the Traffic Controller FPS ..................... 163

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9.3 Category systems............................................................................................ 164
9.3.1 European region .............................................................................. 164
9.3.2 North American region .................................................................... 167
9.3.3Brief overview of grouped category systems.................................. 169
9.4 Terminology relating to statistical measurement accuracy.......................... 170
9.5 Users and authorizations................................................................................ 171
9.5.1 Overview ........................................................................................... 171
9.5.2 Changing default passwords........................................................... 172
9.5.3 Creating users .................................................................................. 173
9.5.4 Change password ............................................................................ 174
9.5.5 User data for accessing the FTP server of the Traffic
Controller.......................................................................................... 174
9.6 IP addresses.................................................................................................... 175
10 Disposal ........................................................................................................................ 176

ABOUT THESE OPERATING INSTRUCTIONS 1
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1About these operating instructions
Please read through this chapter carefully before you use the documentation and work
with the Free Flow Profiler profiling system (also abbreviated to FPS in these operating
instructions).
1.1 Described software versions
Software
Function
Status
TEMS Info interface
Profiling software for recording and processing
measurement data
V 2.0
TEMS platform
Profiling software
V 2.8
Tab. 1: Software versions
1.2 Purpose of this document
These operating instructions are designed to give technical personnel instructions on
the safe mounting, configuration, electrical installation, commissioning, operation, and
maintenance of the profiling system.
These operating instructions do not provide information on operating the customer
system into which the profiling system has been or is going to be integrated. More
information on this can be found in the customer documentation.
1.3 Target group
These operating instructions are intended for persons integrating and operating the
profiling system. They are also intended for the planners and integrators of the customer
system, as well as the operating entity with responsibility for it.
Target group
Activities
Entity operating the customer system
System user
Operating the system: site view and display of the measurement
results in TEMS Manager

The system user reports faults to the system manager.
System manager
Mounting, electrical installation, maintenance, and replacement
of system components.
The system manager submits support requests to SICK.
SICK
SICK service technician
Commissioning, configuration, and support.
Tab. 2: Target group

1ABOUT THESE OPERATING INSTRUCTIONS
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1.4 Information depth
These operating instructions contain information about the following topics related to the
profiling system:
•System description
•Mounting
•Electrical installation
•Commissioning
•Operation
•Maintenance and care
•Fault diagnosis and troubleshooting
•Technical data and dimensional drawings
When planning and using profiling systems, technical skills are required that are not
covered by this document.
The official and legal regulations for operating the system must always be complied with.
Further information about the device components used in the profiling system can be
found in the accompanying operating instructions.
1.5 Abbreviations used
The 2D cross-sections recorded by the 2D LiDAR sensors during the measurement
process are merged together to form a 3D point cloud. The point cloud is used as the
basis for calculating the vehicle dimensions and for vehicle classification.
Free-flow profiling system = a system for measuring and classifying vehicles in free-
flowing traffic
File Transfer Protocol = a network protocol for transferring data between different systems
Laser measurement scanner = 2D LiDAR sensor from SICK AG
Simple Network Management Protocol = a protocol for managing and controlling networks
Traffic Enhanced Measurement System
Customer side of the TEMS Info interface
TCP/IP interface for communication with the TEMS Recorder
Configuration software for the profiling system
Profiling software on the Traffic Controller FPS; it processes the data from the 2D LiDAR
sensors and outputs the results
Entering a UNC path (Universal Naming Convention) allows a path in a network to be
accessed without the need for a drive letter. The UNC path does not need to be visible in
Windows Explorer. Windows shared folders can also be used as UNC destinations.
Uninterruptible Power Supply
Note
3D point cloud
FPS
FTP
LMS
SNMP
TEMS
TEMS Info client
TEMS Info interface
TEMS Manager
TEMS Recorder
UNC
UPS

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1.6 Symbols used
Recommendations are intended to help you make a decision regarding the use of a
particular function or technical feature.
Notes provide information about the features of a device, application tips, or other useful
information.
Instructions that must be carried out in the described order are referred to as step-by-step
instructions and are indicated by numbered lists. Carefully read and follow the
instructions for action.
Instructions requiring specific action are indicated by an arrow. Carefully read and follow
the instructions for action.
LED icons describe the status of a diagnostics LED.
The LED is illuminated continuously.
The LED is flashing.
The LED is off.
Display symbols show the status of the 7-segment display:
 Constant display of characters, e.g., U
Flashing display of characters, e.g., 8
 Alternating display of characters, e.g., L and 2
Recommendation
Note
1. / 2. ...
step by step

Action
, 

,


2ON SAFETY
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2On safety
This chapter provides information that concerns your own safety as well as the safety of
the plant operator.
▸Please read this chapter carefully before you begin working with the profiling system.
2.1 Qualified safety personnel
The profiling system must only be mounted, commissioned, and maintained by properly
qualified safety personnel.
A person is considered qualified safety personnel if he/she
•Has sufficient skills in the field of the respective equipment based on his/her technical
training and experience and
•Has been instructed by the manufacturer on system operation and all applicable safety
guidelines and
•Is familiar with all relevant country-specific occupational safety regulations, work safety
regulations, guidelines, and generally accepted technical rules and standards (e.g.,
DIN standards, VDE regulations, country-specific rules) to such an extent that he/she is
able to evaluate the safe condition of the power-driven machinery and he/she
•Has access to and has read the operating instructions.
2.2 Applications of the system
The Free Flow Profiler profiling system is designed for automated measurement of vehicle
dimensions using eye-safe laser scanners. The system takes the measurements
automatically in free-flowing traffic without any need for manual operation.
The profiling system is designed for use in multi-lane, free-flowing traffic and stop-and-go
traffic as part of electronic toll systems. It can also be used for traffic management and
analysis.
The modules available for the profiling system support the system functions described
below:
System function for measuring vehicle dimensions
The Dimension Measurer system function can be used to identify the following vehicle
data (depending on the system variant): length, width, height, speed, measurement start
and end times, 3D measuring points for the vehicle including – where applicable – excess
dimensions.

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System function for classifying vehicles
The Vehicle Classifier system function sorts vehicles into up to 30 vehicle classes using
predefined category systems. The vehicle class can be output based on the 3D
measurement results for the vehicle.
System function for automatically counting axles
The Axle Detector system function can be used to determine the number of axles and
their positions.
Data output
All the data recorded by the individual system functions are made available via a TCP/IP
interface (TEMS Info interface).
2.3 Intended use
The profiling system may only be used as described in section 2.2 Applications of the
system. It may only be used by qualified personnel in the environment in which it was
mounted and initially commissioned by qualified safety personnel in accordance with
these operating instructions.
The profiling system is not a safety device for human protection and it therefore does not
comply with any safety standards.
It is purely a measurement system without any safety functions and must only be used
in this capacity.
Consequently, any responsibility on the part of SICK is restricted to these defined and
limited properties of the measurement system.
If used in any other way or if alterations are made to the profiling system – including in
the context of mounting and installation – this will render void any warranty claims
directed to SICK AG.
Notes
Note

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2.4 General safety notes and protective measures
2.4.1 Safety notes and symbols
The following safety and hazard notes concern your own safety, the safety of third parties,
and the safety of the devices. You should therefore observe them at all times.
DANGER
Denotes an immediate hazard that may result in severe to fatal injuries.
The symbol shown on the left-hand side of the note refers to the type of hazard in
question (the example here shows a risk of injury resulting from electrical current).
WARNING
Denotes a potentially dangerous situation that may result in severe to fatal injuries.
The symbol shown on the left-hand side of the note refers to the type of hazard in
question (the example here shows a risk of damage to the eye by laser beams).
WARNING
Denotes a potentially dangerous situation that may result in minor personal injury or
possible material damage.
NOTE
Denotes a potential risk of damage or functional impairment of the device or the devices
connected to it.
This symbol refers to supplementary technical documentation.

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2.4.2 General safety notes
The profiling system has been designed in a way that allows for safe operation. Protective
devices reduce potential risks to the maximum possible extent. However, a certain level of
risk will always remain.
Awareness of potential hazardous points in the system will help you to work in a safer
manner and thus prevent accidents.
To avoid risks, please also observe the special warnings in each of the individual
chapters.
WARNING
Safety notes
Observe the following to ensure the safe use of the profiling system as intended.
•The notes in these operating instructions (e.g., regarding use, mounting, installation,
or integration into the machine controller) must be observed.
•All official and statutory regulations governing the operation of the profiling system
must be complied with.
•National and international legal specifications apply to the installation and use of the
profiling system, to its commissioning, and to recurring technical inspections, in
particular:
- Work safety regulations and safety rules
- Any other relevant safety provisions
•The checks must be carried out by qualified safety personnel or specially qualified and
authorized personnel, and must be recorded and documented to ensure that the tests
can be reconstructed and retraced at any time.
•These operating instructions must be made available to the operator of the system in
which the profiling system is used.
•The operator of the profiling system must be instructed by qualified safety personnel
and must read the operating instructions.
WARNING
Risk resulting from improper operation
Improper installation and commissioning, damaged components, and unsuitable ambient
conditions such as excessively cold or warm temperatures and high levels of dust, fog or
spray, may cause faults and faulty alarms and may result in a complete system crash.
WARNING
System does not comply with safety standards
The profiling system is not suitable for the protection of humans within the meaning of the
applicable safety standards for machines. The system therefore does not comply with
safety standards.

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WARNING
Location of use
The profiling system is intended exclusively for use in traffic-related applications.
2.4.3 Potential hazardous points
Laser protection
WARNING
Damage to the eye by laser beams
The 2D LiDAR sensors used in the profiling system conform to Class 1 laser (eye-safe)
criteria according to IEC 60825-1 (latest version); see laser warning plate on the device
for publication date. This ensures compliance with 21 CFR 1040.10 except for the
tolerances according to Laser Notice No. 50 of July 26, 2001.
The laser beam operates at a wavelength of γ = 905 nm (invisible infrared light). The laser
beam is not visible to the human eye.
The radiation emitted in normal operation is harmless to human skin and eyes.
Improper use (e.g., opening the housing and stopping the motor) can result in dangerous
exposure to radiation.
▸Never open the 2D LiDAR sensor housing. Opening the housing does not interrupt the
operation of the laser beam.
▸Observe the laser safety regulations as per IEC 60 825Q1 (latest version).
•No maintenance is required to ensure compliance with laser class 1.
•The laser output aperture is the inspection window on the 2D LiDAR sensor.
•The laser warning is located on the right-hand side of the 2D LiDAR sensor.
WARNING
Important

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Electrical current
DANGER
Risk of injury and damage caused by electrical current
Improper handling of live devices may lead to severe personal injury or death by electric
shock!
▸Electrical installation and maintenance work must always be carried out by personnel
authorized to do so.
▸Be sure to disconnect the voltage supply before attaching or detaching any electrical
connections.
▸Select and implement wire cross-sections and their correct fuse protection in accordance
with the applicable standards.
▸Do not touch any live parts.
▸In the event of danger, immediately disconnect the profiling system from the power
supply.
▸Always use original fuses with the specified current rating.
▸Report any damaged cables to the maintenance team without delay.
▸Observe the current safety regulations when working on electrical systems.
DANGER
Damaging potential equalization currents due to different ground potentials
The profiling system has been designed and tested for electrical safety according to
EN 60 950L1 (2006L04) and EN 60 950L1 / A11 (2009L03).
The profiling system is connected to the peripheral devices (voltage supply, PLC/host,
any other sensors, etc.) via shielded cables. The shield of each cable is connected to the
metal housing of the corresponding system components via the system plug.
If the peripheral devices have metal housings and if the cable shields are also connected
to these housings, it is assumed that all devices involved in the system have the same
ground potential.
This is achieved by fulfilling the following conditions, for example:
•Mounting the devices on conductive metal surfaces.
•Correctly grounding the devices and metal surfaces in the system.
•Low-impedance and current-carrying equipotential bonding between areas with
different ground potentials, if necessary.
If these conditions are not met, e.g., on devices in a widely distributed system spanning
several buildings, different ground potentials may cause potential equalization currents to
flow along the cable shields between the devices, thereby creating hazards.
DANGER
Risk of injury and damage caused by potential equalization currents
Potential equalization currents between the profiling system and the peripheral devices
can have the following effects:
•Dangerous voltages on the metal housing, e.g., of the 2D LiDAR sensors
•Incorrect functioning of or irreparable damage to the devices
•Damage/irreparable damage to the cable shields due to heating and cable fires.

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Commissioning/operation/maintenance
WARNING
Risk resulting from incorrect commissioning and configuration!
Do not commission without testing by qualified personnel!
Before carrying out initial commissioning of the profiling system, you must have it checked
and approved by qualified safety personnel.
WARNING
Avoid strong vibrations and jolts at the measurement site
Do not allow the system components of the profiling system to be exposed to excessive
vibrations or jolts as a result of construction work at the measurement site or within its
immediate vicinity (work involving compressors, road rollers/compactors, etc.).
▸Switch off all components of the profiling system if strong vibrations are anticipated.
NOTE
Claims under the warranty rendered void
The housings of the devices must not be opened. The devices are sealed.
If the device is opened, any warranty claims against SICK AG will be void.
WARNING
Risk resulting from faults
Cease operation if the cause of the malfunction has not been clearly identified!
▸Immediately stop system operation if you cannot clearly identify the fault and if you
cannot safely remedy the problem.

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2.5 Protecting the environment
The profiling system has been designed to minimize its impact on the environment. It
consumes very little energy.
Always act in an environmentally responsible manner at work. For this reason, please note
the following information on disposal.
Disposal after final decommissioning
▸Always dispose of unusable or irreparable devices in accordance with the applicable
waste disposal regulations specific to your country.
▸Remove the plastic parts and recycle the aluminum housing of the 2D LiDAR sensor.
▸Dispose of all electronic assemblies as hazardous waste. The electronic assemblies
can be easily removed.
SICK AG does not take back devices that are unusable or irreparable.
Note

3SYSTEM DESCRIPTION
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3System description
This chapter describes the layout and operating principle of the FPS, in particular the
interaction of the different components.
Always read this chapter before mounting, installing, or commissioning the FPS.
NOTE
Thorough inspection for completeness and damage
It is recommended that you carefully check for and report transport damage of any kind
as soon as possible after receiving the system.
Also verify that the delivery includes all components listed on the delivery note.
▸Report any incomplete or damaged deliveries to Customer Service.
▸Always document the damage by taking photographs.
The FPS profiling system comprises a Traffic Controller FPS with profiling software and
three 2D LiDAR sensors. An Ethernet switch, mounting kits, and cables are available as
SICK accessories.
Fig. 1: FPS system components
Additional 2D LiDAR sensors can be added to the FPS depending on the monitoring tasks.
Scope of delivery
Quantity
Part No.
Description
1088784
Free Flow Profiler
3
(1091458) *
LMS511 SE (system extension) 2D LiDAR sensor
1
(2094695) *
Traffic Controller FPS with profiling software
USB stick with TEMS analyzer, TEMS info sample client, source
code for TEMS info sample client, and operating instructions
* For spare parts order
Quantity
Part No.
Description
1–4
6050687
Voltage supply (20 m) connecting cable for the LMS511 SE
(system extension)
1–4
6050685
Ethernet cable (20 m) for connecting the 2D LiDAR sensors to
the Ethernet switch
1
6026083
Ethernet cable (3 m) for connecting the Ethernet switch to the
Traffic Controller FPS
Note
Accessories

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3.1 The measurement site
When fully configured with all available options, the FPS features the following system
functions:
•The initial vehicle detection system function provides a 3D point cloud for the vehicle,
which serves as the basis for calculating the measurements. This system function
typically comprises two LMS Width system components and one LMS Length system
function. The system components each use an LMS511 SE (system extension) 2D
LiDAR sensor, hereinafter referred to as LMS511.
•The system function for measuring the vehicle dimensions does not require its own
sensors. It uses the vehicle detection data.
•The system function for classifying vehicles does not require its own sensors either. It
uses the vehicle detection data.
•The system function for automatically counting the number of vehicle axles consists of
the LMS Axle system component. This system component uses one LMS511 2D LiDAR
sensor.
All the sensor components of the system communicate with the Traffic Controller FPS via
TCP/IP.
3.1.1 Typical layout of the measurement site
The Layout of the measurement site depends on the local conditions and on the system
functions to be used. Typically, the system components for vehicle detection are mounted
either above the road on a gantry or to the side of the road on a cantilever arm or post.
This position enables the profile of the vehicle to be captured perfectly and the length to
be calculated. Depending on the system configuration, one or more 2D LiDAR sensors are
responsible for monitoring up to four lanes of a road. One direction of travel is assigned to
each lane.
Within all layouts, the system components are precisely positioned in a 3-dimensional
coordinate system.
Fig. 2: Coordinate system
The following axes are used in this coordinate system:
•The horizontal axis (X-axis) points orthogonally across the lane. The zero-point of this
axis is the right-hand edge of the lane (when viewed in the direction of travel).
•The vertical axis (Y-axis) points upward perpendicular to the road surface.
•The movement axis (Z-axis) points in the direction of travel. The zero-point is located on
the profile measuring plane comprising one or more LMS Width laser scanners.
Note

3SYSTEM DESCRIPTION
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8020776/12AX / 2019-05-31|SICK
OPERATING INSTRUCTIONS|Free Flow Profiler
Subject to change without notice
3.1.2 Possible layouts
The following chapters illustrate a selection of possible layouts for the measurement site.
The suggested mounting positions can, of course, be adapted to suit the specific on-site
conditions.
3.1.2.1 Layouts for vehicle detection, vehicle measurement, and vehicle classification
The figure below shows a profiling system with two LMS Width laser scanners mounted at
the sides of the gantry and one LMS Length laser scanner mounted in the middle. This
layout allows you to measure vehicle dimensions and to classify vehicles.
Fig. 3: Layouts – 1 lane, 3 x 2D LiDAR sensors
The two LMS Width laser scanners mounted on the gantry above the lane are used to
capture the profile of the vehicle using individual 2D cross-sections. The beam of the
LMS Width is emitted perpendicular to the road surface. To capture the profile of both
sides of the vehicle, two LMS Width laser scanners are normally used. The purpose of this
is to increase the density of the measuring points in the 3D point cloud and to ensure that
the vehicle is measured on both sides.
The LMS Length (which is aligned along the lane) is responsible for vehicle tracking,
measures changes in vehicle speed, and provides the time axis to which the individual 2D
cross-sections are assigned. The beam of the LMS Length is emitted along the direction of
travel.
Note