분산형 광섬유 센싱, DTS 및 DAS 시스템

분산형 음향 센싱은 코히어런트 레일리 산란을 기반으로 합니다. 굴착, 발걸음, 차량 이동 또는 누출 소음과 같은 외부 진동이나 음향 이벤트가 광섬유에 작용하면, 후방 산란광의 광학 경로와 위상에 미세한 변화가 발생합니다.

시스템은 광섬유를 따라 발생한 이러한 탄성 산란 신호를 분석하여 진동 이벤트를 재구성하고 장거리 구간에서 위치를 파악할 수 있습니다.

물리 원리: 탄성 산란, 광자 에너지 보존
감지 대상: 진동, 음향파, 변형 및 침입 이벤트
적용 분야: 파이프라인 보안, 경계 보호, 누출 소음 및 PIG 추적

열 및 온도

DTS: 비탄성 라만 산란

분산형 온도 센싱은 라만 산란을 사용합니다. 탄성 산란과 달리 라만 산란은 광자가 광섬유 분자와 에너지를 교환하는 비탄성 상호작용입니다.

후방 산란 신호에는 Stokes와 Anti-Stokes 성분이 포함됩니다. Anti-Stokes 신호는 온도에 매우 민감하므로, 시스템은 각 위치에서의 신호 비율을 비교하여 광섬유 전 구간의 온도 분포를 계산합니다.

물리 원리: 비탄성 산란, 광자 에너지 변화
감지 대상: 온도, 핫스팟, 화재 위험 및 열 이상
적용 분야: 전력 케이블 모니터링, 터널, 화재 경보 및 파이프라인 열 모니터링

DIVERSITY OF EXPLORATION

OUTDOOR SCENE

However, those with sealed components, including motors, controllers, and connectors, can also be operated outdoors. Performance IC forklifts tend to be utilized in heavy-duty applications, such as brick and lumber yards, where larger capacity and performance is required to move the heavy loads.

INFRASTRUCTURE SCENARIO

TRANSPORTATION SCENARIOS

INDUSTRIAL SCENARIOS

Our Sensing Solutions

Acoustic Sensing

HZ-iDAS-50 Series

Intelligent Distributed Acoustic Sensing system. Integrates with AI management platform.

Range: Up to 50km
Tech: Coherent Rayleigh
App: Pipeline security

Learn More

Temperature Sensing

HZ-DTS-1004 Series

High-precision linear heat detection. Real-time online monitoring for critical thermal assets.

Range: 12km per channel
Tech: Raman OTDR
App: Power cables, Tunnels

Learn More

Well Logging

FS-5100 System

High-fidelity long-range DAS designed specifically for oil & gas well logging.

Fidelity: High-res subsurface scan
Range: 50km Single Channel
App: Reservoir analysis

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Distributed Fiber Optic Sensing FAQ

Common questions about DTS, DAS, fiber optic temperature sensing and distributed acoustic sensing.

What is distributed fiber optic sensing?

Distributed fiber optic sensing uses optical fiber as a continuous sensing medium. Instead of placing sensors only at fixed points, the fiber itself becomes a long sensing line for temperature, vibration or acoustic events.

What is the difference between DTS and DAS?

DTS measures temperature changes along the fiber route, while DAS detects vibration and acoustic events. DTS is typically used for cable temperature, hotspots and fire risk. DAS is typically used for intrusion, digging, leak noise and route disturbance.

When should I choose DTS?

Choose DTS when the monitoring target creates temperature change, such as power cable overheating, tunnel fire risk, pipeline thermal leakage, tank temperature change or data center cable temperature rise.

When should I choose DAS?

Choose DAS when the monitoring target creates vibration or acoustic energy, such as digging, vehicle movement, footsteps, pipeline interference, leak noise or perimeter intrusion.

Can DTS and DAS be used together?

Yes. Many long-distance assets benefit from both systems. DTS provides temperature visibility, while DAS provides vibration and disturbance awareness. Together they support more complete route-level monitoring.

Which HERTZINNO products are recommended for fiber sensing?

HZ-DTS is recommended for distributed temperature sensing. HZ-iDAS is recommended for distributed acoustic sensing. FS-5100 is recommended for oilfield DAS and well logging applications.

PRODUCTS: Acoustic Imaging Cameras; Voiceprint Products; Optic Fiber Sensing

Contact Us: Greenland Mtown, No. 515, Huanke Road, Pudong District, Shanghai, China; info@hertzinno.com

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