누출감지 모니터링 시스템

Praetorian - Fibre Optic Sensing

Praetorian System은 진동 및 온도 변화를 찾기 위해 대규모 파이프 라인을 지속적으로 모니터링 합니다. 시스템이 경보를 확인하고 디지털로 보고하면 기존 사이트 분산 제어 시스템(DCS)을 사용하여 유지/보수 또는 운영팀에게 경보를 발생 시킵니다.

Praetorian은 실시간으로 광 섬유 기록을 따라 일련의 마이크 폰 및 온도계   역할을 한다고 생각할 수 있습니다.

이 시스템은 초고속FPGA 아키텍처를사용하여 많은양의데이터를 분석하여 가능한 원천적인 방해 유형에 대한 실시간 피드백을 제공합니다.

독점적인 패턴 인식 소프트웨어 및 다중 변수 센싱을 활용하면 일반적으로 다른광섬유 센서와 관련된 가양성의발생을 줄일 수 있습니다.

Praetorians은 보안 또는 감시 팀이 즉시 대응할 수 있도록 알람을전송합니다.

Praetorians은 처리 속도와 펄스의 반복 주파수 속도가 빠르므로 방해가 될 수 있는 미세한 간섭을 감지 할 수 있습니다. 감지 가능한 영역은 다음과 같습니다.

  • 파이프라인누수
  • 수동굴착
  • 기계굴착
  • 파이프라인 주변의차량이동
  • 지진활동
  • 지상교란

Praetorian – Fibre Optic Sensing

Praetorian takes its name from the most elite guards of the Roman Empire, charged with protecting Praetors, Senators and Emperors alike. HAWK’s Praetorian Fibre Optic Sensing system lives up to this name and are at the forefront of asset protection.

Fibre Optic Sensing represents a pinnacle of current day sensor technology. This type of technology  allow for real time measurements of long assets such as pipelines, conveyers and fences by monitoring changes that occur in a fibre optic cable affixed to the asset.

Rather than a traditional point instrument, Praetorian’s sensing is distributed along the fibre thereby the entire cable is able to sense disturbances to the application.

What can Praetorian see?

Pretorian is able to be configured to sense the following:

  • Sound: Acoustics and Vibration: Acting as a hyper sensitive microphone at every point in the fibre listening for potential problems.
  • Temperature: Acting as a thermometer, heat detector or thermocouple at every point along the fibre, feeling for potential problems.
  • Strain: Tiny changes in stress and strain in the application can be picked up as if the fibre itself was made of thousands of strain gauges, predicting breakages and failures before they have a chance to occur.

Praetorian is modular in design depending on the application it is possible to have one or more of these sensing capabilities built in.

Where can I use it?

Praetorian is able to monitor any linear asset, examples Include:

  • Pipelines (above ground or buried)
  • Perimeters
  • Fences
  • Roads
  • Railways
  • Tunnels
  • Bridges

This modular hardware and software is unique and has world leading specifications and software for false positive minimisation and maximum flexibility for specific in-situ customer needs.

HAWK offers a range of software suites in order to accommodate the various applications that are able to be monitored with the Praetorian Fibre Optic Sensing System.

How does it work?

Distributed Acoustic Sensing (DAS) continuously monitors Vibration, Sound and Acoustic Energy along the fibre using a process called Rayleigh Backscatter along the entire length of an optical fibre. Using a “time of flight” calculation on the laser pulse the position of any incoming signal can be determined to within a meter.

Distributed Temperature Sensing (DTS) and Distributed Strain Sensing (DSS) work in a similar way, but use a looped fibre within the sensing cable to detect both Temperature and Strain. The laser is sent down both sides of this loop and the interference pattern allows for Brillouin Backscattering to be measured revealing changes to Strain and Temperature within the fibre.

Praetorian has a built-in Field Programmable Gate Array (FPGA) which quickly records, processes and analyses the data collected by the system and detects and reports signals generated by problematic events within the environment.

What does Praetorian tell me?

Praetorian has a built in Human Machine Interface (HMI) and can be operated directly or connected to existing Control Systems (such as SCADA) via a digital communications protocol (Typically TCP/IP) and report:

  • The location of the alarm
  • The classification of the alarm
  • The alarms longitude and latitude
  • The intensity of the alarm
  • A time and date stamp of the alarm
  • And other detected conditions depending on the specific application

Why HAWK?

HAWK’s unique modular design means that it is possible to monitor up to 80 kilometres (50 miles) of fibre with a single system simultaneously detecting Temperature, Vibration and Strain. A single interrogator in one rack mounted enclosure is the most reliable and cost effective way to integrate multi-variable sensing of a Fibre Optic Sensing system.

Utilising a highly stable fibre optic laser, HAWK is able to achieve extreme signal stability and increased ranges. By reducing laser fluctuation even the smallest signals are able to be detected at great distances leading HAWK to have the best sensing capability in the market.