Cảnh báo ứng dụng công nghệ sợi quang

959-11, Daechon-dong, Buk-gu, Gwangju, 500-470, South Korea Tel : +82-62-973-6114 /
FOM Sensor
April, 2009
1
Giới thiệu hệ thống bảo vệ, cảnh báo bằng cáp sợi
quang (công nghệ sưu tầm)
FOM Sensor operates based on Optical Radar Technology
The system injects Infrared Laser pulses into FOM (Fiber Optic Mesh) and detects intrusion
from Optical echoes caused by intruder cutting or excess force so as to pinpoint the intrusion
spot within ±15m error on th monitor with audible & visible alarm at Main Control Center
FOM Sensor Overview
Intrusion Alarm & Display
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FOM Sensor Overview
Skin & Eyes Concept Protection
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
The FOM Intrusion detection system, surrounding and protecting important facilities, shall detect
intrusion by generating audible alarm and pinpointing an intrusion spot on a display map within ±15
m accuracy.

FOM sensor is based on Fiber Optic Mesh Sensor and Optical Radar Technology. The OSU (Optical
Sensing Unit) injects Infrared Laser pulses into Fiber Optic Mesh and it detects Optical echoes of
the Infrared Laser pulses caused & backscattered by a cutting or excess force when an intruder
pulls or cut off the Fiber Optic Mesh.

The ACS (Alarm Control Station) which is located at MCC (Main Control Center) receives the
intrusion data from OSU and generates the audible alarm and pinpoints the intrusion spot.
FOM Sensor System Operation
Normal
Break or Strain

optical sensor cable
IR laser pulse
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ACS (Alarm Control Station)
OSU (Optical Sensing Unit)
OIA (Optical Intrusion Alarm)
FOM (Fiber Optic Mesh)
: Optical Fiber Sensor Cable
CCTV System
Software
Accessories
FOM Sensor Configuration
ACS
OSU
OIA
FOM CCTV camera
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Feature of FOM Sensor
False alarm free
Virtually 100% accurate detection of intrusion
Catch intruder view without missing at alarming
Pinpoint the intrusion location
Expensive Security Lightings to be replaced by Camera Lamps
To avoid expensive Thermal Cameras
Heavy & expensive fences to be replaced by cheap concertinas
Heavy steel gates to be replace by light FOM gates
Grooved Rods instead of Concrete Foundation
Minimum control equipments
Negligible Maintenance & Simple to operate by only one operator
Applicable unlimitedly to fence, wall, gate, buried, underwater etc.

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Unique & Cost Effective perfect Solution - 1
(1) Zero Nuisance Alarm
•
FOM Sensor is designed to eliminate the bugbear of PIDS(Perimeter Intrusion Detection
System) – Nuisance Alarm.
•
FOM using Optical Radar technique is immune to all kinds of environmental effects such as
vibration (wind, vehicle vibration, thunder, shocks), water (rain, snow, haze), electricity
(lightning, Power Line, EM fields).
(2) No Gaps, no compromise - 100% detection
•
FOM sensor do not compromise and overcome all the limitations of Vibration sensors
(3) Accurately locates within 15m
•
Pinpoint to the exact location of breach for effective security management.
•
The human eyes have limited night vision range and only able to see up to 30m in twilight.
•
As such, the PIDS must be designed to address this human limitation and be accurate to
pinpoint intrusion within the 30m accuracy.
•
With Fiber cable sensor, the accuracy is about the 200m range and this definitely not
acceptable as the patrol is unableto reach the specific intrusion point to see and apprehend
the intruder.
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(4) Applicable unlimitedly by fence type and terrain condition
•
FOM can be mounted on any type of the existing barrier or free standing whereas other kind
of systems is restricted to the type of existing fence.

•
For example, vibration cable sensors cannot be fitted onto a loose iron mesh fence or a rigid
wall.
•
It can be only being applied on a high-strength iron mesh fence because the cable sensors
require to sense the sound or vibration when the intruder cuts the mesh or scales over the
rigid wall.
(5) FOM is the effective measure against digging.
•
FOM can be applied without limitation by terrain condition providing effective anti-digging
measures. Shallow digging can be effectively detected by inserting FOM bottom to Grooved
Rod top in soil base ground condition.
(6) Negligible Maintenance
•
For FOM Sensor, minimum electronic equipments are placed outdoors and does not need
any adjustment or calibration to cater for weather change, hence the system requires
negligible maintenance.
Unique & Cost Effective perfect Solution - 2
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(7) Reduce CCTV Cameras
•
With conventional PIDS such as Cable Sensor or Microwave, with accuracy if about 100m,
fixed cameras must be placed at 50m spacing or PZT cameras at 200m spacing for effective
coverage.
•
On the other hand, using FOM Sensor with the ability to pinpoint intrusion with an accuracy
of 15M, PZT cameras can be placed at spacing of 400m. This will mean significant savings in
the cost of CCTV system required to work effectively in conjunction with the PIDS.
(8) Save Security Lighting
•

The site under protection by FOM Sensor does not need to have Security Lights ON at night
unless intrusion happens.
•
No intrusion no nuisance alarm allows no need to have security lights.
•
Instead to have Security Lights ON, illuminators with cameras are preferred to illuminate at
intrusion scene at alarming by FOM.
Unique & Cost Effective perfect Solution - 3
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FOM Sensor Application
Airport
Military Base
Border security
Utility
Water Treatment Plant
VIP residential district
Government Facility
Nuclear Power Plant
Research & Scientific Laboratory
Correctional Center
Port
Temporary Security Site
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Comparison of Various PIDS Performances - 1
Products
Features
IR/MW/EH
Field Sensor
Vibration
Cable Sensors

Taut Wire
Sensors
Other Fiber
Optic mesh
system
FOM sensor
Sensing Mode Sense human
body’s preformed
EM-field or IR
radiation
Sense vibration due
to cutting or
climbing
Sense breakage of
cutting or pulling
the sensors
By monitoring
Optical
transmission, Fiber
Optic mesh senses
cutting and top
Fiber Optic loop
senses pulling
respectively
By monitoring
Optical echo from
the intrusion spot,
sense and locate
cutting or pulling
the selectively

Sensing and
Location
performance
Sense normal speed
walking and locate
100~300m zone
Sense normal speed
cutting or climbing
100~300m zone
Sense normal speed
cutting of pulling
and locate
100~300m zone
Sense cutting and
climbing and locate
100m zone
Sense and locate
cutting or pulling
within zone of 250m
typically.
Vulnerability to
defect
•
Defeated by slow
of fast movement
•
Defeated by
crawling or jumping
over
•

Degraded at
rainy/snowy/windy
weather
•
silent cutting
•
slow
cutting/climbing
•
fast
cutting/climbing
•
intrusion at wind
•
balanced cutting
•
taut wire clamping
•
taut wire –
bypassing
•
spiral wire
removing
•
detector cooling
•
penetration after
opening the cross
over button by
nipper and punch

•
crawling after
separating mesh
bottom fixture bolts
to fence post
•
climbing after
laying down the top
supports
Prevent any defeat
attempts
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Products
Features
IR/MW/EH
Field Sensor
Vibration
Cable Sensors
Taut Wire
Sensors
Other Fiber
Optic mesh
system
FOM sensor
Environmental
Effects
•
Severe false alarm
due to wind, snow,
rain, haze,

lightening
•
Limited by harsh
ground condition
•
Affected by near-
by grass, trees,
passengers, cars,
power lines
•
Severe false alarm
due to wind and
temperature change
•
Immune to terrain
condition
•
Affected by grass,
trees, passengers,
cars, power lines
•
Severe false alarm
by rain, storm,
frozen ground,
tension change at
high temp.
•
Damaged by
lightening
•

Not applicable to
harsh terrain
condition
•
Affected by truck,
airplane
•
Transducer/EO
Box/control Cu
cable affected by
rain, lightening,
electrostatic etc.
•
Top tension
sensing loop limited
by harsh terrain
condition and
affected by
surrounding
•
Bottom portion
may require chicken
net covering against
small animal attacks
•
Immune to all
weather condition
because of
disturbance-free
sensing method and

no electronic
equipment outdoors
•
Not affected by
ground conditions
and surrounding
conditions
•
Bottom portion
may require chicken
net covering against
small animal attacks
Maintenance
problems
•
Frequency and
sensitivity
adjustments upon
weather change
•
Frequency and
sensitivity
adjustments upon
weather change
•
Tension/
sensitivity
adjustments upon
temperature and
wind variation

•
Large man power
to install
•
Large maintenance
•
Transducer/EO
Box/control cable
maintenance
problem
•
no OTDR function
partial replacement
difficults
•
semi-OTDR
•
partial
replacement easy
•
only seasonal
check necessary
Comparison of Various PIDS Performances - 2
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Products
Features
IR/MW/EH
Field Sensor
Vibration
Cable Sensors

Taut Wire
Sensors
Other Fiber
Optic mesh
system
FOM sensor
Applicable area
•
Protected area
•
Roof top
•
Rigid brick well
•
Not fit to existing
fences, need
separate posts and
space
•
Concrete surface
•
Flat rigid base
•
Limited to chain
mesh fence only
•
Not fit to wall, gate
and guard post
•
Fit to may types of

existing fences
•
standing-free FOM
fence
•
Fit to gate, around
post
Comparison of Various PIDS Performances - 3
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Security System
Requirements
FOM Sensor Solution
(FOM & 4 PZT Cameras)
Other Sensor Solution
(Fence IDS and 16 Cameras)
1) Negligible False Alarm
Rates ;
Comparable to actual
Intrusion Rate
• No False Alarm
• Normal at typhoon
• Severe false alarms due to rain, wind,
lightning, sand storm, shun shine, high
temperature etc
• Obsolete at sand storm
2) Guarantee to detect
rare but feared intrusion
100% full proof detection Poor detection reliability
• Depends on weather
• Unable to detect fast or slow movement and

silently cutting thru
3) Accurately locate
± 15m nominal ( ± 1m actually) Officially
proven from field tests
Unknown within 2km Loop
4) Simple Maintenance
Negligible maintenance
• No zone processor in FOM system
• 4 sensitive rotary cameras
Maintenance burden due to
• 14 FIDS zone processors
• 16 cameras
5) To catch Intruder
Image at Alarm
• Clearly identify 1m intruder / 30m scene
→8mm /21”Monitor
• Not miss the image of intruder
• Intruder view per 130m
6) Simple Operation
• Only on Control Rack with one monitor
• One operator to check at alarming
• Two Control Racks with four monitors
• Four operators continuously to check severe
false alarming and watch four monitors
Comparison between FOM Sensor & Other Sensor
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FOM at Foreign sites since 2005
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FOM at Airport sites
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Woven FOM at Military sites
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Thank You
for Your Attention !!!
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Please contact to:
Mr. Phan Van Tue
Hand phone: 0935486486