IDS GeoRadar s r l IBIS-SU IBIS Supply Unit User Manual

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Document Title	MN_2009_071_11_Manuale_Utente_IBIS-S_PPR_france_cust
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- PRO/010/M1 Rev 4 -
INGEGNERIA DEI SISTEMI S.p.A.
Rev. 1.1
N°doc: MN/2009/071
Config.: IBIS-S-PRCS-OUT-MN
IBIS-S System
IMAGE BY INTERFEROMETRIC SURVEY
IBIS-S v. 1.0 User Manual
Pisa, June 2010
Tot. N° pages = 48
IDS Ingegneria Dei Sistemi S.p.A.
IBIS-S v. 1.0 - User Manual
N doc: MN/2009/071 - Rev. 1.1
Config.: IBIS-S-PRCS-OUT-MN
KEY WORDS
IBIS-S, INTERFEROMETER, INSTALLATION
SUMMARY
IBIS-S system user manual. This document illustrates the contents of
the package and the procedures the operator must perform to set up and
dismantle the IBIS-S system.
Document Evolution
Revision
Date
Reason for change
Rev. 1.0
October 2009
First Edition with Battery information (according to DL 188
dated 20/11/2008)
Rev. 1.1
June 2010
Document revision for declarations for US and Canada (see
RNC 201005097)
Document change record
RNC
201005097
References
Before index
Change description
Declarations for US and Canadian customers
HW and SW versions covered by this document
IBIS-S apparatus v. 1.0.
Warnings
IDS will not be held responsible for the consequences of an improper use of the equipment.
IDS will not be held responsible for the consequences of an improper use of the software
All information contained in this document is property of IDS.
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IDS Ingegneria Dei Sistemi S.p.A.
IBIS-S v. 1.0 - User Manual
N doc: MN/2009/071 - Rev. 1.1
Config.: IBIS-S-PRCS-OUT-MN
Contacts
IDS Ingegneria Dei Sistemi S.p.A.
Via Sterpulino, 20
56121 PISA (Loc. Ospedaletto)
Tel: +3905096711
Fax: +39050961721
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IDS Ingegneria Dei Sistemi S.p.A.
IBIS-S v. 1.0 - User Manual
N doc: MN/2009/071 - Rev. 1.1
Config.: IBIS-S-PRCS-OUT-MN
DISCLAIMER
IDS WILL NOT BE HELD RESPONSIBLE FOR THE CONSEQUENCES
OF AN IMPROPER USE OF THE EQUIPMENT AND/OR THE
SOFTWARE.
THIS
SOFTWARE
MAY
INCLUDE
PROCESSING AND ANALYSIS TOOLS.
AUTOMATED
DATA
WHILE EVERY EFFORT IS MADE TO ENSURE THE ACCURACY OF
THE INFORMATION PROVIDED BY THOSE TOOLS, THEY MUST
NOT BE INTENDED AS A SUBSTITUTE FOR INTELLIGENT
ANALYSIS; RATHER, THEY HAVE TO BE INTENDED AS AN
ADVISOR AND THE USER MUST NOT COMPLETELY RELY ON THE
RESULTS PROVIDED BY THEM TO GIVE THE COMPLETE
ANSWER.
IDS INGEGNERIA DEI SISTEMI SPA ASSUMES NO LIABILITY FOR
ANY
DIRECT,
INDIRECT,
SPECIAL,
INCIDENTAL
OR
CONSEQUENTIAL DAMAGES OR INJURIES CAUSED BY SUCH
RELIANCE ON THE ACCURACY, RELIABILITY, OR TIMELESS OF
THE INFORMATION PROVIDED BY THOSE TOOLS.
ANY PERSON OR ENTITY WHO RELIES ON INFORMATION
OBTAINED
FROM
THE
AUTOMATED
DATA
PROCESSING/ANALYSIS TOOLS ONLY, DOES SO AT HIS OR HER
OWN RISK.
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IDS Ingegneria Dei Sistemi S.p.A.
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Config.: IBIS-S-PRCS-OUT-MN
SAFETY INFORMATION
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IBIS-S v. 1.0 - User Manual
N doc: MN/2009/071 - Rev. 1.1
Config.: IBIS-S-PRCS-OUT-MN
Warning: this equipment is destined for use in industrial environments
(Class A apparatus). In residential, commercial and light industry
environments, this apparatus may generate radio interference: in this case,
the user may be required to operate while taking appropriate
countermeasures.
The apparatus is sensitive to the presence of external electromagnetic fields,
which may reduce its performance.
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IDS Ingegneria Dei Sistemi S.p.A.
IBIS-S v. 1.0 - User Manual
N doc: MN/2009/071 - Rev. 1.1
Config.: IBIS-S-PRCS-OUT-MN
IMPORTANT NOTE FOR THE US CUSTOMERS
Model No.: IBIS-KU
FCC ID: UFW-IBIS-KU
This device complies with part 90 of the FCC Rules.
Caution: Any changes or modifications to this device not explicitly approved by manufacturer could void your
authority to operate this equipment.
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This
equipment should be installed and operated with minimum 20 cm between the radiator and your body. This
transmitter must not be collocated or operating in conjunction with any other antenna or transmitter unless
authorized to do so by the FCC.
IMPORTANT NOTE FOR THE CANADIAN CUSTOMERS
Model No.: IBIS-KU
IC ID: 8991A-IBISKU
This device has been designed to operate with the antennas listed below, and having a maximum gain of 22 dB.
Antennas not included in this list or having a gain greater than 22 dB are strictly prohibited for use with this device.
The required antenna impedance is 50 ohms.
IBIS-ANT1-H38V18
IBIS-ANT2-H29V25
IBIS-ANT3-H17V15
IBIS-ANT4-H11V10
IBIS-ANT5-H12V39
IBIS-ANT6-H51V20
Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device
must accept any interference, including interference that may cause undesired operation of the device.
To reduce potential radio interference to other users, the antenna type and its gain should be so chosen that the
equivalent isotropically radiated power (e.i.r.p.) is not more than that permitted for successful communication.
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IDS Ingegneria Dei Sistemi S.p.A.
IBIS-S v. 1.0 - User Manual
N doc: MN/2009/071 - Rev. 1.1
Config.: IBIS-S-PRCS-OUT-MN
CLEANING INFORMATION
WARNING
Before cleaning any external parts of the apparatus, make sure
that all cables have been disconnected, including the power
supply cable. If a damp cloth is used, make sure it is not too wet,
to avoid any damage to the electrical components of the
equipment. Wait until the equipment is totally dry before
reconnecting the cables.
The IBIS-S should be cleaned periodically using a damp cloth.
Do not use solvents or abrasive detergents.
Do not apply liquid directly to the electrical contacts of the
various connectors. If a specific spray is used to clean the PC
TFT monitor, make sure it is not flammable; in any case, do not
spray it directly on the screen, instead, spray it onto the cleaning
cloth.
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IDS Ingegneria Dei Sistemi S.p.A.
IBIS-S v. 1.0 - User Manual
N doc: MN/2009/071 - Rev. 1.1
Config.: IBIS-S-PRCS-OUT-MN
BATTERIES REMOVAL INFORMATION
NOTE: Batteries must be recycled according to national regulations. Read
carefully the warnings and information on the batteries.
Laptop Batteries:
Manufacturer: PANASONIC
Type: Li-ion Ni
Characteristics: 10.65V 5.7Ah
Removal instructions:
1. turn off the laptop;
2. open the drawer marked with the battery symbol;
3. extract the battery pack by pulling the tab.
Radar batteries:
Manufacturer: FIAMM FG21202
Type: rechargeable lead acid, non
spillable batteries
Characteristics: 12V & 12Ah
Removal instructions:
1. disconnect the battery from the instrument:
a. pull the connector wings;
b. separate the connectors;
2. remove the battery from the cover (optional) by opening
the strap.
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IDS Ingegneria Dei Sistemi S.p.A.
IBIS-S v. 1.0 - User Manual
N doc: MN/2009/071 - Rev. 1.1
Config.: IBIS-S-PRCS-OUT-MN
RECICLYING
The crossed out wheeled bin symbol shown on the equipment indicates that
the product must be recycled separately from other waste at the end of its
useful life.
Separate waste disposal of this product at the end of its useful life will be
organised and managed by IDS. When you decide to dispose of the
equipment, contact IDS and follow the system that IDS has set up to permit
the separate collection of the apparatus at its life end.
Adequate separate collection for its subsequent recycling, treatment and
environmental friendly disposal contribute towards avoiding any
unnecessary effects on the environment and to health and favour the reuse or
recycling of the materials that make up the equipment. Unauthorised disposal
of this product as unsorted waste by its possessor will lead to an
administrative penalty foreseen by national regulations.
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IDS Ingegneria Dei Sistemi S.p.A.
IBIS-S v. 1.0 - User Manual
N doc: MN/2009/071 - Rev. 1.1
Config.: IBIS-S-PRCS-OUT-MN
WARRANTY CERTIFICATE CONDITIONS
1) IDS Ingegneria dei Sistemi S.p.A, hereinafter referred to as IDS, warrants hardware/software
products for a period of 12 months from the delivery date to the original customer;
2) The delivery date is certified by the “Warranty Registration Form”;
3) IDS’s hardware products will be free from defects in materials workmanship under normal use and
service;
4) IDS’s obligation is limited to repairing or replacing parts or equipment which are returned to IDS,
without alteration or further damage, and which in IDS s judgment, were defective or became
defective during normal use;
5) IDS’ software will have to be installed on a PC according to the requirement of the IDS hardware (
see IDS User’s Guide the Software Data Acquisition);
6) IDS’ s software products designed by IDS for use for IDS hardware products are warranted not to
fail to execute their programming instructions due to defects during the warranty period, provided
they are properly installed on IDS hardware products. IDS does not warrant if the IDS software will
be used and operated in hardware and software combinations not selected by IDS;
7) IDS does not assumes any liability for any direct, indirect, special, incidental or consequential
damages or injuries caused by proper or improper operation of its equipment whether defective or
not defective;
8) This software may include automated data processing and analysis tools. While every effort is made
to ensure the accuracy of the information provided by those tools, they must not be intended as a
substitute for intelligent analysis; rather, they have to be intended as an advisor and the user must
not completely rely on the results provided by them to give the complete answer. IDS assumes no
liability for any direct, indirect special, incidental or consequential damages or injuries caused by
such reliance on the accuracy, reliability, or timeliness of the information provided by those tools.
Any person or entity who relies on information obtained from the automated data
processing/analysis tools only, does so at his or her own risk;
9) IDS’s warranty does not extend and shall not apply to:
a)
Products which have been repaired or altered by other than IDS personnel;
b) Products which have been subjected to misuse, neglect, accident or improper installation;
c)
Products in which have been installed Hardware/Software accessories not supplied by IDS
and/or without any approval by IDS;
d) Products which have been connected to equipment different from the ones supplied by IDS
(except the PC data Logger which must conform to IDS specifications;
e)
Products which have been damaged by natural disaster or calamities.
10) Before returning any equipment to IDS , you have to contact the IDS Customer Care Office that will
authorize you to return the material to be repaired;
11) Once the parts/equipment to be repaired arrive to IDS, IDS may inspect the defective products to
verify they are eligible for repair or replacement. All packing must be saved for inspection purpose
in order to assist IDS to understand the cause of the defects. IDS, will not be obliged to repair, or
replace for products returned as defective but damaged from abuse, misuse, negligence , accident
loss or damage in transit;
12) The final clients, is responsible for ensuring the defective products returned to be properly
packaged;
13) The above warranty are sole and exclusive, and no other warranty, whether written or oral, is
expressed or implied.
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IDS Ingegneria Dei Sistemi S.p.A.
IBIS-S v. 1.0 - User Manual
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Config.: IBIS-S-PRCS-OUT-MN
INDEX
1. Introduction ........................................................................................................................... 15
1.1 Scope.............................................................................................................................. 15
1.2 Field of application........................................................................................................ 15
1.3 Authorisation for use – national restriction .................................................................. 15
1.4 CE Marking ................................................................................................................... 16
1.5 Acronyms ....................................................................................................................... 16
2. Overview................................................................................................................................. 17
2.1 How to use this manual.................................................................................................. 17
2.2 General description of the IBIS-S system ...................................................................... 17
3. Pack contents ......................................................................................................................... 19
4. IBIS-S system hardware configuration ............................................................................... 23
4.1 IBIS-S Sensor................................................................................................................. 23
4.2 Antennas ........................................................................................................................ 24
4.2.1 Ku band system antennas ...............................................................................................24
4.2.2 X band system antennas .................................................................................................27
4.3 Control and acquisition PC ........................................................................................... 28
4.4 Batteries......................................................................................................................... 29
4.5 Connection cable kit IBIS-CS KIT................................................................................. 29
4.6 Tripod and three axial head .......................................................................................... 30
5. IBIS-S Installation and Dismantling Procedure................................................................. 31
5.1 Material required........................................................................................................... 31
5.2 IBIS-S installation.......................................................................................................... 33
5.3 Dismantling IBIS-S ........................................................................................................ 41
6. Useful Tips.............................................................................................................................. 43
6.1 Installation..................................................................................................................... 43
6.2 Use ................................................................................................................................. 44
Appendix A - Restrictions......................................................................................................... 45
Appendix B - Technical Specifications .................................................................................... 45
B.1 - Radar sensor ............................................................................................................... 45
B.2 - Batteries / battery charger .......................................................................................... 46
B.3 - Panasonic CF-19 PC .................................................................................................. 46
Appendix C - Elements of Radar Technology ........................................................................ 47
C.1 - Definitions .................................................................................................................. 47
C.1.1 Main antenna lobe .........................................................................................................47
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IDS Ingegneria Dei Sistemi S.p.A.
IBIS-S v. 1.0 - User Manual
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Config.: IBIS-S-PRCS-OUT-MN
FIGURES INDEX
FIG. 2.1 – IBIS-S..........................................................................................................................................18
FIG. 3.1 – TRIPOD BAG .............................................................................................................................19
FIG. 3.2 – IBIS-S CASE...............................................................................................................................20
FIG. 4.1 – IBIS-S SENSOR..........................................................................................................................23
FIG. 4.2 – REAR (A) AND FRONT (B) VIEW OF IBIS-S SENSOR ........................................................24
FIG. 4.3 – BOTTOM VIEW IBIS-S SENSOR.............................................................................................24
FIG. 4.4 – IBIS-H20 VERTICAL PLANE PATTERN................................................................................25
FIG. 4.5 – IBIS-H20 HORIZONTAL PLANE PATTERN ..........................................................................25
FIG. 4.6 – IBIS-H20 ANTENNA .................................................................................................................25
FIG. 4.7 – IBIS-H23 VERTICAL PLANE PATTERN................................................................................26
FIG. 4.8 – IBIS-H15 HORIZONTAL PLANE PATTERN ..........................................................................26
FIG. 4.9 – IBIS-H15 VERTICAL PLANE PATTERN................................................................................26
FIG. 4.10 – IBIS-H15 HORIZONTAL PLANE PATTERN ........................................................................26
FIG. 4.11 – IBIS-H13 VERTICAL PLANE PATTERN ..............................................................................26
FIG. 4.12 – IBIS-H13 HORIZONTAL PLANE PATTERN ........................................................................26
FIG. 4.13 – X BAND ANTENNA VERTICAL PLANE PATTERN ..........................................................27
FIG. 4.14 – X BAND ANTENNA HORIZONTAL PLANE PATTERN ....................................................27
FIG. 4.15 – PC PANASONIC CF-19 ...........................................................................................................28
FIG. 4.16 – CONNECTIONS SCHEME......................................................................................................29
FIG. 5.1 – THE IBIS-S CASE ......................................................................................................................31
FIG. 5.2 – CONTENTS OF THE IBIS-S CASE ..........................................................................................32
FIG. 5.3 – SECOND LAYER OF IBIS-S CASE CONTENTS....................................................................32
FIG. 5.4 – INSTALLED TRIPOD................................................................................................................33
FIG. 5.5 – COMPOSITION OF THE TRIAXIAL HEAD ...........................................................................34
FIG. 5.6 – MOUNTED TRIAXIAL HEAD .................................................................................................34
FIG. 5.7 – TRIAXIAL HEAD FIXED TO THE TRIPOD ...........................................................................35
FIG. 5.8 – UNBLOCKING THE LEVERS OF THE QUICK LOCK MECHANISM.................................35
FIG. 5.9 – METALLIC NUT........................................................................................................................36
FIG. 5.10 – TIGHTENING NUT .................................................................................................................36
FIG. 5.11 – SENSOR INSTALLATION ONTO THE TRIPOD..................................................................37
FIG. 5.12 – MOUNTING THE OPTICAL TELESCOPE............................................................................37
FIG. 5.13 – MOUNTING THE ANTENNAS ..............................................................................................38
FIG. 5.14 – POINTING THE SENSOR .......................................................................................................38
FIG. 5.15 – REMOVE THE PROTECTION CAPS.....................................................................................39
FIG. 5.16 – CONNECTING THE SENSOR TO THE BATTERY..............................................................39
FIG. 5.17 – INSTALLED IBIS-S SYSTEM ................................................................................................40
FIG. 5.18 – START UP WINDOW OF THE IBIS-S CONTROLLER SOFTWARE .................................40
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Config.: IBIS-S-PRCS-OUT-MN
FIG. 5.19 – REMOVING THE SENSOR FROM THE THREE AXIAL HEAD ........................................41
FIG. 5.20 – POSITION OF THE BODY OF THE THREE AXIAL HEAD WHEN PACKING IT AWAY42
FIG. 6.1 – PROJECTION OF DISPLACEMENT DATA............................................................................43
FIG. 6.2 – TRIPOD.......................................................................................................................................44
FIG. C. 1 – SCHEMATIC DIAGRAM OF THE ANTENNA BEAM.........................................................47
FIG. C. 2 – AREA OF THE SCENARIO COVERED BY THE ANTENNA BEAM MAIN LOBE ..........48
TABLES INDEX
TAB. 3.1 – TRIPOD BAG CONTENTS......................................................................................................19
TAB. 3.2 – IBIS-S CASE CONTENT..........................................................................................................22
TAB. 4-1 – WIDTH OF THE MAIN LOBES OF THE IBIS-H20 ANTENNAS AT -3 DB AND -10 DB.25
TAB. 4-2 – KU BAND ANTENNAS CHARACTERISTICS .....................................................................27
TAB. 4-3 – WIDTH OF THE MAIN LOBES OF THE X BAND ANTENNAS AT -3 DB AND -10 DB .27
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Config.: IBIS-S-PRCS-OUT-MN
1. INTRODUCTION
This document provides an introduction to the IBIS-S system (Image By Interferometric
Survey-S), with particular reference to the concepts the user must learn before starting to
use this device. Therefore we recommend that you read the entire document before
starting the system.
If technical assistance is required, please use the contact numbers provided on page 3 of
this manual.
1.1 Scope
This document will provide the operator with all the necessary knowledge to install and
maintain the IBIS-L system. In particular, the manual describes:
The contents of the cases;
The procedure for installing and dismantling the system;
Information for the safe use of the system.
1.2 Field of application
This document applies to the installation and dismantling of the of the IBIS system in S
configuration and its use in the field for monitoring quasi static or dynamic phenomena.
1.3 Authorisation for use – national restriction
European countries
IBIS-S system has been classified by the CEPT Administrations as SRD – Short Range
Device - i.e. a device that doesn’t cause interference to other systems operating in the
same frequency band. IBIS-S has so been included in the ERC/REC 70-03 which defines
the SRD equipment.
For Ku band system
While the European countries update their national frequency allocation table applying the
new recommendations, currently the use of IBIS-S system outside a laboratory can still be
subject to authorisation by the Competent Ministry of the country where the system will
be used. Please refer to the country’s Competent Ministry to know whether there is the
need of an authorisation.
For X band system
Almost all the European countries have applied the ERC/REC 70-03 for the X band
system. Please refer to the Competent Ministry of the country where the system will be
used to know if there are limitations in the use of X band IBIS-S equipment.
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Config.: IBIS-S-PRCS-OUT-MN
1.4 CE Marking
This equipment is in compliance with the essential requirements and
other relevant provisions of the Directive 1999/5/EC.
The full Declaration of Conformity can be found either on the CD or
a separate document included with this product.
This is a Class A product. In a domestic environment it may cause
radio interference, in which case the user may be required to take
adequate measures.
1.5 Acronyms
IBIS-S: Image By Interferometric Survey - S;
SF-CW: Stepped Frequency - Continuous Wave.
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2. OVERVIEW
2.1 How to use this manual
This manual consists of the following chapters:
•
Chapter 3 - contents of the cases
•
Chapter 4 - IBIS-S system hardware configuration
•
Chapter 5 - IBIS-S system installation and dismantling procedure
•
Chapter 6 - Useful Tips
•
Appendix A - Restrictions
•
Appendix B - Technical Specifications
•
Appendix C - Elements of Radar Technology
2.2 General description of the IBIS-S system
The IBIS-S system is designed to remotely measure displacements with a sampling
frequency up to 200 Hz with an accuracy as fine as a hundredth of a millimetre.
The performance of the IBIS-S system depends on the type of configuration used and on
the operative measurement conditions; however, the best performance characteristics can
be defined as follows:
•
Maximum operational distance: 1000 m;
•
Maximum image resolution in distance: 75 cm;
•
Accuracy in measuring displacements in the viewing direction: 0.01 mm;
The time required for instrument installation is about 20 minutes, and the same time is
required for its dismantling.
The instrument has been specifically designed for outdoor use and is equipped with IP65
level protection and is supplied with a notebook PC specifically designed for outdoor use
in extreme conditions.
The IBIS-S system offers the following advantages over currently available monitoring
systems (GPS, extensometers, accelerometers ):
•
remote monitoring without the need to access the structure to be monitored
•
Resolution of 0.75 m which permits IBIS-S to identify a large number of “virtual
displacement sensors” on the area under investigation, simply by remotely
targeting the scenario;
•
Acquisition frequency of the entire measurement area up to 200Hz;
•
Directly measure the displacements in real time: IBIS-S can process acquired data
and display the displacement of a point selected from the scenario in real time.
This IBIS-S characteristic permits the monitoring of damaged structures with real
time generation of alarm signals in case of collapse danger;
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•
Displacement measurement accuracy up to 1/100 of a millimetre: the
interferometer technique permits IBIS-S to measure movements with a high
degree of accuracy and precision, never seen before in a remote monitoring
system;
•
Quick to install;
•
Functioning conditions suitable for long term monitoring :
Automatic functioning (presence of an operator not necessary while
functioning);
Can operate night and day;
Can operate in any weather conditions;
The IBIS-S system is particularly suitable for all applications where it is important to
measure displacements of a structure without the need to have direct access to it , or when
short investigations must be performed quickly.
By performing long range measurements, without the need for direct contact with the
structure to be monitored, IBIS-S permits measurements to be performed even when:
•
The area of interest is not accessible;
•
The structure is very tall such as a large antenna or a tower;
•
The structure is covered by paintings or sculptures and it is not feasible to perform
contact monitoring.
In addition, in emergency situations when monitoring activities are required to guarantee
safety, the possibility if performing remote monitoring may be an essential condition
towards saving lives.
Fig. 2.1 – IBIS-S
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IDS Ingegneria Dei Sistemi S.p.A.
IBIS-S v. 1.0 - User Manual
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Config.: IBIS-S-PRCS-OUT-MN
3. PACK CONTENTS
The packing cases contain the following items:
Tripod Bag:
Black shoulder bag with tripod inside: size 20x20x80cm, total weight
6Kg,. (see Tab. 3.1).
Fig. 3.1 – Tripod bag
N°1 tripod
Tab. 3.1 – Tripod bag contents
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IDS Ingegneria Dei Sistemi S.p.A.
IBIS-S v. 1.0 - User Manual
IBIS-S case:
N doc: MN/2009/071 - Rev. 1.1
Config.: IBIS-S-PRCS-OUT-MN
Black trolley containing material listed in Tab. 3.2: size 55x30x80 cm,
weight 40 kg.
Fig. 3.2 – IBIS-S case
N°1 IBIS sensor
N°1 Optical telescope
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IDS Ingegneria Dei Sistemi S.p.A.
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Config.: IBIS-S-PRCS-OUT-MN
N°1 pair of antennas with four fixing
screws for each
N°1 USB cable to connect IBIS-S
sensor to the computer (length: 3m).
N°1 power cable used to connect IBIS-S
sensor with the battery (length: 3m).
N°1 three axial support for IBIS-S
sensor
N°1 PC PANASONIC CF19
(the original package with warranties
and software licences is provided
separately)
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IBIS-S v. 1.0 - User Manual
N doc: MN/2009/071 - Rev. 1.1
Config.: IBIS-S-PRCS-OUT-MN
N°2 12V batteries with one yellow bag
each
N°1 battery charger
N°1 PC power supplier from electrical
network
N°1 PC power supplier from batteries
N°1 IBIS-S user manual
N°1 IBIS-S Controller manual
Tab. 3.2 – IBIS-S case content
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IBIS-S v. 1.0 - User Manual
N doc: MN/2009/071 - Rev. 1.1
Config.: IBIS-S-PRCS-OUT-MN
4. IBIS-S SYSTEM HARDWARE CONFIGURATION
IBIS-S components description is provided in this section of the manual:
•
Cap.4.1 IBIS-S sensor;
•
Cap.4.2 IBIS antennas;
•
Cap.4.3 control and acquisition PC;
•
Cap.0 power supply batteries IBIS-BAT;
•
Cap.4.5 power supply cables kit IBIS-C KIT;
•
Cap.4.6 tripod (IBIS-TR) and three axial head(IBIS-H3).
4.1 IBIS-S Sensor
The IBIS-S sensor is the unit containing all the parts for the generation, transmission,
reception and acquisition of the radar signal. The sensor (see Fig. 4.1) is a yellow box
having 375x270x115 mm dimensions.
Fig. 4.1 – IBIS-S sensor
It features the following interfaces (see Fig. 4.2 and Fig. 4.3):
•
1 type A USB Female connector on the rear of the box;
•
1 12 pole Male connector to provide power on the rear of the box;
•
2 housings for the antennas on the front of the box.
•
1 dovetail guide to be used to fix the optical telescope to the sensor (see par.5.2)
on the top of the box;
•
1 threaded screw hole to permit the sensor to be fitted onto the tripod (see par.
5.2) on the bottom of the box;
•
4 dovetail elements to permit the sensor to be fitted onto the pointing system
positioning module (for IBIS-L configuration).
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IBIS-S v. 1.0 - User Manual
N doc: MN/2009/071 - Rev. 1.1
Config.: IBIS-S-PRCS-OUT-MN
Dovetail guide
Power supply
housings
USB
(b)
(a)
Fig. 4.2 – Rear (a) and front (b) view of IBIS-S sensor
4 dovetail elements
for IBIS-L
configuration
Threaded
screw hole
Fig. 4.3 – Bottom view IBIS-S sensor
4.2 Antennas
4.2.1 Ku band system antennas
The Ku band IBIS-S system is provided with two identical IBIS-H20 antennas operating
in vertical polarisation and characterised by a maximum gain of 20dBi. The amplitude
characteristics of the antenna main lobe at -3 dB and -10 dB are provided in Tab. 4-1 and
its vertical and horizontal patterns are shown in Fig. 4.4 and Fig. 4.5. For further details
see appendix 6.2C.1 - .
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IBIS-S v. 1.0 - User Manual
IBIS-H20
-3 dB
-10 dB
N doc: MN/2009/071 - Rev. 1.1
Config.: IBIS-S-PRCS-OUT-MN
HORIZONTAL
PLANE
17°
34°
VERTICAL
PLANE
15°
45°
Tab. 4-1 – Width of the main lobes of the IBIS-H20 antennas at -3 dB and -10 dB
Fig. 4.4 – IBIS-H20 vertical plane pattern
Fig. 4.5 – IBIS-H20 horizontal plane pattern
The sensor is fitted with two flanges, each with four filleted holes for the installation of
the pair of antennas (see paragraph 5.2).
Fig. 4.6 – IBIS-H20 antenna
If desired as an optional or a substitution, the IBIS-H20 antennas can be replaced by a pair
of three other antennas whose characteristics are reported below:
IBIS-H23 antennas (Type 1) having the following characteristics:
•
Maximum gain of 23.5 dBi;
•
Horizontal antenna beam width at -3dB: 11deg.
•
Vertical antenna beam width at -3dB: 10deg.
IBIS-H15 antennas (Type 3) having the following characteristics:
•
Maximum gain of 15 dBi;
•
Horizontal antenna beam width at -3dB: 29deg.
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IBIS-S v. 1.0 - User Manual
•
N doc: MN/2009/071 - Rev. 1.1
Config.: IBIS-S-PRCS-OUT-MN
Vertical antenna beam width at -3dB: 25deg.
IBIS-H13 antennas (Type 4) having the following characteristics:
•
Maximum gain of 13.5 dBi;
•
Horizontal antenna beam width at -3dB: 38deg.
•
Vertical antenna beam width at -3dB: 18deg.
Figure from Fig. 4.7 to Fig. 4.12 show the vertical and horizontal patterns of antenna
Type 1, 3 and 4 and Tab. 4-2 summarizes the information for the all four antenna types.
Fig. 4.7 – IBIS-H23 vertical plane pattern
Fig. 4.8 – IBIS-H15 horizontal plane pattern
Fig. 4.9 – IBIS-H15 vertical plane pattern
Fig. 4.10 – IBIS-H15 horizontal plane pattern
Fig. 4.11 – IBIS-H13 vertical plane pattern
Fig. 4.12 – IBIS-H13 horizontal plane pattern
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IBIS-S v. 1.0 - User Manual
N doc: MN/2009/071 - Rev. 1.1
Config.: IBIS-S-PRCS-OUT-MN
Gain Elevation Azimuth
[dBi]
[deg]
[deg]
Antenna Type
1 - IBIS-H23
-3 dB azimuth beamwidth
-10 dB azimuth beamwidth
23,5
10
30
11
23
20
15
45
17
34
15
25
49
29
53
13,5
18
30
38
70
2 - IBISH20
-3 dB azimuth beamwidth
-10 dB azimuth beamwidth
3 - IBIS-H15
-3 dB azimuth beamwidth
-10 dB azimuth beamwidth
4 - IBISH13
-3 dB azimuth beamwidth
-10 dB azimuth beamwidth
Tab. 4-2 – Ku band Antennas characteristics
4.2.2 X band system antennas
The X band IBIS-S system is provided with two identical antennas operating in vertical
polarisation and characterised by a maximum gain of 21dBi. The amplitude characteristics
of the antenna main lobe at -3 dB and -10 dB are provided in Tab. 4-3 and its vertical and
horizontal patterns are shown in Fig. 4.13 and Fig. 4.14. For further details see appendix
6.2C.1 - .
X band
antenna
-3 dB
-10 dB
HORIZONTAL
PLANE
15°
27°
VERTICAL
PLANE
15°
25°
Tab. 4-3 – Width of the main lobes of the X band antennas at -3 dB and -10 dB
Fig. 4.13 – X band antenna vertical plane
pattern
Fig. 4.14 – X band antenna horizontal plane
pattern
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IBIS-S v. 1.0 - User Manual
N doc: MN/2009/071 - Rev. 1.1
Config.: IBIS-S-PRCS-OUT-MN
The sensor is fitted with two flanges, each with four filleted holes for the installation of
the pair of antennas (see paragraph 5.2).
4.3 Control and acquisition PC
The IBIS-S system is supplied with a notebook PC, model PANASONIC CF-19 (see Fig.
4.15). It contains the operative system windows XP and the pre-installed control and data
acquisition software IBIS-S Controller v. 02.01.004.
Fig. 4.15 – PC Panasonic CF-19
Characteristics of the supplied model are:
•
Intel Core Duo Processor U2400;
•
100 Mb/s Ethernet card;
•
RAM 512 MB memory ;
•
max monitor resolution 1024x768 pixels;
•
max number of colours 16 777 216 colours;
•
Windows XP Professional operative system;
•
HDD 80 GB, shock-proof (mounted on gel support or equivalent);
•
Protection from atmospheric agents (conforms with IP54);
•
No communication software such as Firewall, WiFi or antivirus must be installed
to avoid any conflict with the IBIS-S Controller software.
NOTA: IDS takes no responsibility for malfunctioning if there is a functional conflict between
its software and any software installed on the notebook PC by the user. IDS does not
guarantee that the performance of its equipment will be maintained using a
configuration different to that recommended.
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IBIS-S v. 1.0 - User Manual
N doc: MN/2009/071 - Rev. 1.1
Config.: IBIS-S-PRCS-OUT-MN
The notebook is supplied with a network power supplier (220V) and a battery power
supplier (12V). The latter permits to supply the notebook using the battery or the 12V
plug of a car.
4.4 Batteries
IBIS-S is provided with two 12Vdc batteries and with one battery charger that can
recharge a battery in about 6 hours.
The batteries can be used contemporarily:
•
One to supply IBIS-S sensor;
•
The other to supply the notebook using the battery power supplier.
In both cases one battery lasts about 4 hours..
4.5 Connection cable kit IBIS-CS KIT
The IBIS-CS KIT includes:
•
A 3 m long USB cable to connect IBIS-S sensor to the notebook;
•
A 3 m long power supply cable to connect IBIS-S sensor to the battery;
•
Two power supply cable for the notebook:
One to supply it with the battery (12 V);
The other to supply it with the network (220 V 50 Hz).
Fig. 4.16 shows the connections scheme.
IBIS-S
PC
USB
IBIS-S power
supply
PC power
supply
Battery
Battery
Fig. 4.16 – Connections scheme
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IBIS-S v. 1.0 - User Manual
N doc: MN/2009/071 - Rev. 1.1
Config.: IBIS-S-PRCS-OUT-MN
4.6 Tripod and three axial head
The IBIS-S standing device is composed of a tripod and a head with three rotational axles.
The IBIS-S sensor stands fixed on the triaxial head which is screwed on the tripod
providing stable support on the ground.
The triaxial head permits the operator to change the IBIS-S sensor pointing, simply
acting on the axes blocking levers.
The tripod characteristics are listed below:
•
weight: 4,3kg;
•
minimum height: 43cm;
•
maximum height: 188cm
Triaxial head characteristics are listed below:
•
weight: 1,9 kg;
•
azimuth allowable rotation: 360°;
•
elevation allowable rotation: from -25 deg to + 90 deg;
•
lateral rotation: from -30 deg to +90 deg.
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IBIS-S v. 1.0 - User Manual
N doc: MN/2009/071 - Rev. 1.1
Config.: IBIS-S-PRCS-OUT-MN
5. IBIS-S INSTALLATION AND DISMANTLING PROCEDURE
The IBIS-S system has been designed to be fast and simple to install. The complete
procedure takes about 20 minutes to have the instrument ready for operation. The same
time is required to dismantle it.
The following section describes all the material required (Para. 5.1) and the steps to
follow to correctly install (Para. 5.2) and dismantle(Para. 5.3) IBIS-S.
5.1 Material required
The material required for installation includes:
•
IBIS-S case;
•
Bag containing tripod;
•
Small tapered cross slot screwdriver (not supplied).
Proceed as follows to remove the various parts from the case:
1.
sit the IBIS-S case on the ground;
Fig. 5.1 – The IBIS-S case
2.
open the 7 catches around the IBIS-S case and lift the lid;
3.
after removing the protective layer, you will see:
a.
2 batteries;
b.
1 battery charger;
c.
1 three axial head;
d.
1 PC power supply converter for battery;
e.
1 optical telescope
f.
1 USB cable and 1 sensor power supply cable
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IBIS-S v. 1.0 - User Manual
N doc: MN/2009/071 - Rev. 1.1
Config.: IBIS-S-PRCS-OUT-MN
Battery
charger
Batteries
Optical
telescope
Sensor power
supply cable
PC-Sensor
USB cable
Three
axial head
Panasonic
PC
Battery
transformer
for PC
Fig. 5.2 – Contents of the IBIS-S case
4.
remove the Panasonic PC, the optical telescope, the USB cable and the sensor
power supply cable;
5.
you will see the second layer of equipment:
a.
1 pair of H20 antennas;
b.
1 mains transformer for the PC;
c.
1 IBIS-S sensor
IBIS-S
sensor
H20
Antennas
PC mains
transformer
Fig. 5.3 – Second layer of IBIS-S case contents
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IBIS-S v. 1.0 - User Manual
N doc: MN/2009/071 - Rev. 1.1
Config.: IBIS-S-PRCS-OUT-MN
5.2 IBIS-S installation
In order to simplify system installation, the area where the IBIS-S is to be installed must
be chosen carefully. The selected area must satisfy the following requirements:
•
The scenario of interest must be visible and the view must be uninterrupted by
the presence of obstacles from the chosen point (trees, fences, buildings);
•
The area must be sufficiently large to mount the tripod, manoeuvre with the case
and for the operator to work from (the tripod covers at most a circular surface
1.5 m in diameter while the case has a base of 85x55 cm);
•
The surface must be compact and stable to avoid any subsidence under the
weight of the instrument.
Once the optimal installation point has been chosen, proceed as follows:
1.
Remove the tripod form its bag.
2.
Open the tripod and fix it at the desired height using the levers and blocking
screws.
3.
Ensure that all the joints have been firmly tightened to optimise the rigidity and
stability of the tripod.
4.
Position the tripod on the ground being careful that the area chosen is stable.
5.
Level the tripod using its spirit level, adjusting the length of the individual legs
if required
Fig. 5.4 – Installed tripod
6.
Remove the triaxial head and handles from the case.
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IBIS-S v. 1.0 - User Manual
N doc: MN/2009/071 - Rev. 1.1
Config.: IBIS-S-PRCS-OUT-MN
Hexagonal
lock
Adjustment
handles
Triaxial
head
Fig. 5.5 – Composition of the triaxial head
7.
Remove the plastic tags from the long handle and the triaxial head.
8.
Screw in the two short handles in the yellow coloured nut covers.
9.
Screw the long handle into the threaded hole on the side of the triaxial head.
10. Tighten the three handles.
Fig. 5.6 – Mounted triaxial head
11. Screw the triaxial head onto the filleted pin on the top of the tripod;
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IBIS-S v. 1.0 - User Manual
N doc: MN/2009/071 - Rev. 1.1
Config.: IBIS-S-PRCS-OUT-MN
Handle for
elevation
control
Handle for
horizontal
control
Handle for
azimuth control
Fig. 5.7 – Triaxial head fixed to the tripod
12. rotate the three axial head, working on the three handles until it perfectly is
levelled with the two spirit levels positioned near the top of the three axial head
(ensure that the handles are well tightened).
13. unblock the hexagonal quick lock from the three axial head by acting on the 2
levers as shown in Fig. 5.8.
Fig. 5.8 – Unblocking the levers of the quick lock mechanism
14. Remove the hexagon from the triaxial head and remove the plastic cap covering
the hexagon screw.
15. Insert the quick lock hexagon screw into the threaded hole on the bottom of the
sensor , working on the metallic nut (Fig. 5.9);
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IBIS-S v. 1.0 - User Manual
N doc: MN/2009/071 - Rev. 1.1
Config.: IBIS-S-PRCS-OUT-MN
Fig. 5.9 – Metallic nut
16. Position the hexagon so that one side of the hexagon is parallel with the long
side of the IBIS-S head base, then block the hexagon using the tightening nut
(Fig. 5.10);
Fig. 5.10 – Tightening nut
17. Lift the sensor with the antenna side pointing forward.
18. Position yourself with the sensor behind the tripod on the side with the elevation
control handle.
19. Lift the sensor over the tripod and slowly lower it making sure that the hexagon
is positioned above the quick locking mechanism on the triaxial head.
20. Fix the sensor onto the tripod, ensuring the locking mechanism clicks into place.
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IBIS-S v. 1.0 - User Manual
N doc: MN/2009/071 - Rev. 1.1
Config.: IBIS-S-PRCS-OUT-MN
Antenna
side
Elevation
handle
Fig. 5.11 – Sensor installation onto the tripod
21. Retrieve the optical telescope and loosen the lower screws.
22. Install the optical telescope on the sensor, sliding it into the guide on the top of
the sensor and fix it by tightening the screws (the writing on the telescope
should face the side with the connectors).
Screws for
fixing the
telescope
Fig. 5.12 – Mounting the optical telescope
23. Retrieve the two antennas and their fixing screws from the case.
24. Mount the two antennas on the sensor (Fig. 5.13) using the screws provided (4
for each antenna).
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Config.: IBIS-S-PRCS-OUT-MN
Fig. 5.13 – Mounting the antennas
25. Acting on the two handles that block the azimuth and elevation axes, rotate the
sensor until the optical telescope is pointing to the desired point of the scenario;
Fig. 5.14 – Pointing the sensor
26. Remove the protection caps covering the connectors on the back of the IBIS-S
sensor;
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IBIS-S v. 1.0 - User Manual
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Config.: IBIS-S-PRCS-OUT-MN
Fig. 5.15 – Remove the protection caps
27. Retrieve one of the batteries from the case.
28. Connect the power supply cable to the IBIS-S sensor then to the battery.
Fig. 5.16 – Connecting the sensor to the battery
29. Place the PC near the sensor (during operation we recommend using a portable
table to sit the PC on).
30. Connect the PC to the second battery using the car transformer.
31. Start up the PC and log in as administrator.
32. Connect the USB cable to the IBIS-S sensor and then to the PC;
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IBIS-S v. 1.0 - User Manual
N doc: MN/2009/071 - Rev. 1.1
Config.: IBIS-S-PRCS-OUT-MN
USB cable
Battery transforming
PC cable
Fig. 5.17 – Installed IBIS-S system
33. Start up the IBIS-S Controller control and management software by double
clicking ion the icon shown on the desktop.
34. Check software has recognised the sensor.
Fig. 5.18 – start up window of the IBIS-S Controller Software
Once these operations have been completed, IBIS-S is active and ready to be used.
For the description of the control and management SW functions, refer to the specific
manual.
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IBIS-S v. 1.0 - User Manual
N doc: MN/2009/071 - Rev. 1.1
Config.: IBIS-S-PRCS-OUT-MN
5.3 Dismantling IBIS-S
1. Close the IBIS-S Controller application and turn off the PC;
2. Disconnect the power supply cable form the sensor and then from the battery.
3. Disconnect the USB cable from the PC and then from the sensor.
4. Disconnect the transformer from the PC and then from the battery.
5. Screw the protection caps onto the two IBIS-S sensor connectors .
6. Remove the optical telescope from the IBIS-S sensor by loosening the screws and
sliding it out of the guide;
7. Remove the two IBIS-H20 antennas from the sensor.
8. Reposition the antennas in the appropriate place in the IBIS-S case.
9. Keeping firm hold of the sensor, unblock the quick lock mechanism on the
triaxial head (we recommend this operation is performed by two operators; one
keeping hold of the sensor, the other unblocking the quick lock mechanism).
Fig. 5.19 – Removing the sensor from the three axial head
10. Remove the IBIS-S sensor, lifting it off of the triaxial head.
11. Place the sensor on one side and loosen the external fixing nut on the hexagon.
12. Unscrew the hexagon from the bottom of the IBIS-S sensor, acting on the metallic
nut and screw on the back of the hexagon on the triaxial head.
13. Replace the IBIS-S sensor in its position in the IBIS-S case.
14. Remove the triaxial head from the tripod by rotating the azimuth control handle
anticlockwise (the handle must be securely tightened).
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IBIS-S v. 1.0 - User Manual
N doc: MN/2009/071 - Rev. 1.1
Config.: IBIS-S-PRCS-OUT-MN
Fig. 5.20 – Position of the body of the three axial head when packing it away
15. Close the tripod and place it in its bag.
16. Replace the remaining objects into the IBIS-S case (cables, PC and optical
telescope).
17. Close the IBIS-S case after having fixed secure all parts.
Before closing the case check that the contents are complete and that all the parts have
been secured, in order to avoid any damage during transportation.
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IBIS-S v. 1.0 - User Manual
N doc: MN/2009/071 - Rev. 1.1
Config.: IBIS-S-PRCS-OUT-MN
6. USEFUL TIPS
6.1 Installation
The successful performance of a field measurement campaign starts with the initial
inspection survey. The scope of this survey is the evaluation of the following aspects:
•
Identification of a suitable installation point for the IBIS-S in terms of scenario
visibility and stability of the point the equipment will sit on. The characteristics
of a good position can be summarised as:
o direction of the displacement to be measured coincides with the ideal line
traced between the sensor and the measurement point;
o there being sufficient space to operate safely and to position the tripod, the
IBIS-S case and for the operators to move around;
o easily accessible to permit all the required material to be brought to the site.
•
An evaluation beforehand of the quantity, quality and position of reflecting
points present in the scenario;
•
The possibility to install artificial reflectors if those present in the scenario are
not sufficient. Installation of artificial reflectors eliminates one of the advantages
of IBIS-S, because it means that there must be access to the site. However, the
use of artificial reflectors allows a better accuracy in displacement measurement
and identification of the point the displacement is measured for.
•
The presence of possible disturbances due to vegetation, foliage or other
sources, near to the intended displacement measurement points.
•
The number of measurement points and their location in the scenario.
The IBIS-S sensor measures displacements along the ideal line joining the sensor to the
point being examined (radial displacement), therefore if the real displacement occurs in
another direction, the detected displacement must be projected on the basis of geometrical
considerations (Fig. 6.1).
Measured displacement
Real displacement
Fig. 6.1 – Projection of displacement data
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IBIS-S v. 1.0 - User Manual
N doc: MN/2009/071 - Rev. 1.1
Config.: IBIS-S-PRCS-OUT-MN
To avoid making projection errors of the displacement data and when possible, we
recommend positioning the sensor so that the displacement direction of the interested
object occurs along the line that joins the point to the sensor.
If this is not possible, in order to minimise projection errors, an accurate georeferencing of
the sensor must be performed with respect to the scenario/structure of interest.. Maps of
the scenario and /or drawings of the buildings to be observed (in 3D if possible) should be
obtained.
If the monitoring concerns a public building or infrastructure , make sure that all required
authorisations have been obtained. It is always a good idea however to warn the
responsible local authority before starting to perform measurements.
When extending the tripod to reach the desired height, the following basic precautions
should be taken to optimise the rigidity of the structure:
•
Adjust the height of the structure by first lengthening the middle section of the
legs, then the thinner bottom sections;
•
If possible, avoid extending the central column;
•
Avoid opening the legs wide when they have been significantly extended in
length.
Central
column
Handle for
controlling the
central column
Bottom
section
Middle
section
Fig. 6.2 – Tripod
6.2 Use
When the equipment is functioning, it is a good idea to ensure that nobody can pass or
stop in front of the radar sensor to avoid a reduction in the quality of the radar acquisition.
When performing a field measurement campaign , it is very useful to have a folding table
where the control and acquisition PC can be positioned.
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IBIS-S v. 1.0 - User Manual
N doc: MN/2009/071 - Rev. 1.1
Config.: IBIS-S-PRCS-OUT-MN
APPENDIX A - RESTRICTIONS
A.1 - Ku band system
According to the CEPT Recommendation ERC 70-03 IBIS-L system working at Ku band
is allowed to transmit on a band of 200MHz, between 17.1GHz and 17.3 GHz permitting
a range resolution up to 0.75m.
A.2 - X band system
According to the CEPT Recommendation ERC 70-03 IBIS-L system working at Ku band
is allowed to transmit on a band of 100MHz, between 10.5GHz and 10.6 GHz permitting
a range resolution up to 1.5m.
NOTE: A different configuration of the system is subject to the request of an authorization for
use to the competent body of the country where the equipment has to be used. IDS
takes no responsibility for the use of the system with a configuration not compliant
with the recommendation and without the required permission.
APPENDIX B - TECHNICAL SPECIFICATIONS
B.1 - Radar sensor
Ku band system
Frequency band
17.1 – 17.3 GHz
Maximum EIRP power
26dBm
X band system
Frequency band
10.5 – 10.6 GHz
Maximum EIRP power
27dBm
Power supply
9-36 Vdc
Power Consumption
average: 27 W
Dimensions
width 375 mm
lenght 270 mm
height 115 mm
Weight
10 kg
45 / 48
All information contained in this document is property of IDS. All rights reserved.
IDS Ingegneria Dei Sistemi S.p.A.
IBIS-S v. 1.0 - User Manual
N doc: MN/2009/071 - Rev. 1.1
Config.: IBIS-S-PRCS-OUT-MN
B.2 - Batteries / battery charger
Batteries:
Voltage supplied
12 Vdc, 12 Ah
Autonomy
4 hours
(in continuous operation)
Dimensions
width 150 mm
length 100 mm
height 100 mm
Weight
3.8 kg
Battery charger:
Power supply
230 V; 50 Hz
Charging time
6 hours
B.3 - Panasonic CF-19 PC
Power supply
16 Vdc
Power absorbed
Average: 11 W
Dimensions
Width 270 mm
Length 220 mm
height 55 mm
Weight
2.2 kg
46 / 48
All information contained in this document is property of IDS. All rights reserved.
IDS Ingegneria Dei Sistemi S.p.A.
IBIS-S v. 1.0 - User Manual
N doc: MN/2009/071 - Rev. 1.1
Config.: IBIS-S-PRCS-OUT-MN
APPENDIX C - ELEMENTS OF RADAR TECHNOLOGY
C.1 - Definitions
C.1.1 Main antenna lobe
The term antenna main lobe (or beam) is intended as the angular area within which the
antenna concentrates most of the power it is supplied with.
The main lobe of an antenna can be schematically represented as a truncated cone with an
elliptic base, where the cone vertex is positioned in correspondence with the antenna. The
base of the cone is elliptical since antennas typically have lobes with different angular
amplitudes in the elevation (V) and azimuth (H) planes.
V plane
H plane
Fig. C. 1 – Schematic diagram of the antenna beam
The following parameters are normally defined to quantify the antenna beam amplitude:
•
The beam at -3dB: angular area within which antenna gain is more than 50% of the
maximum gain (-3 dB = 10*log10(0,5)).
•
The beam at -10 by: angular area within which gain is more than 10% of the
maximum gain (-10 dB = 10* log10(0,1)).
From an applicative point of view, this means that the sensor must be pointed so that the
scenario of interest falls inside the antenna beam, preferably at -3dB. Therefore the
distance at which the instrument should be positioned and its inclination should be chosen
depending on the antenna beam being used.
47 / 48
All information contained in this document is property of IDS. All rights reserved.
IDS Ingegneria Dei Sistemi S.p.A.
IBIS-S v. 1.0 - User Manual
N doc: MN/2009/071 - Rev. 1.1
Config.: IBIS-S-PRCS-OUT-MN
Area visible inside the
antenna beam
Fig. C. 2 – Area of the scenario covered by the antenna beam main lobe
48 / 48
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