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FOM Sensor operates based on Optical Radar TechnologyThe system injects Infrared Laser pulses into FOM Fiber Optic Mesh and detects intrusion from Optical echoes caused by intruder cutt

FOM Sensor

April, 2009

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

FOM Sensor Overview

Skin & Eyes Concept Protection

 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

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

OIA

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.

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.

(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

(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

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

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 •of fast movement Defeated by slow

• 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

Prevent any defeat attempts

Features

IR/MW/EH Field Sensor Vibration Cable Sensors Taut Wire Sensors

Other Fiber Optic mesh system FOM sensor

Environmental

Effects •due to wind, snow, Severe false alarm

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 •sensitivity Frequency and

adjustments upon weather change

• Frequency and sensitivity adjustments upon weather change

• Tension/

sensitivity adjustments upon temperature and wind variation

• Transducer/EO Box/control cable maintenance problem

• no OTDR function

• semi-OTDR

• partial replacement easy

• only seasonal check necessary

Comparison of Various PIDS Performances - 2

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

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 • Two Control Racks with four monitors

Comparison between FOM Sensor & Other Sensor

FOM at Foreign sites since 2005

FOM at Airport sites

Woven FOM at Military sites

Thank You for Your Attention !!!

Please contact to:

Mr Phan Van Tue Hand phone: 0935486486