- Distributed fiber optic intrusion sensor systems provide continuous monitoring of perimeters up to 100km with a single interrogator unit, eliminating blind spots in security coverage.
- これらのシステムは、 分散型光ファイバーセンシング technologies including DAS, DVS, and DTS to detect and classify intrusion attempts with precision accuracy of 1-2 メートル.
- Modern systems integrate advanced AI algorithms that can distinguish between 24+ types of threats while reducing false alarms by up to 87% compared to conventional perimeter security technologies.
- グローバルな 分散型光ファイバーセンサー 市場 is projected to reach $2.2 billion by 2026, growing at 11.4% CAGR due to increasing critical infrastructure protection demands.
- FJINNO’s advanced systems lead the industry with superior detection capabilities, extreme environmental tolerance (-40°C ~ +70°C), and seamless integration with existing security infrastructure.
Distributed fiber optic intrusion sensor systems for monitoring long perimeters represent the most advanced perimeter security technology available today, offering unprecedented protection for critical infrastructure, 国境, パイプライン, and other high-value assets. これら systems transform ordinary fiber optic cables into sophisticated sensing networks capable of detecting, locating, and classifying intrusion attempts along perimeters spanning tens or even hundreds of kilometers, all from a single monitoring point.
理解 分散型光ファイバーセンシング テクノロジー
その核心, distributed fiber optic sensing technology converts standard optical fibers into highly sensitive vibration, 温度, and strain detectors. When properly deployed along a perimeter or critical infrastructure route, these systems can detect and precisely locate disturbances caused by walking, 掘る, クライミング, 切断, or vehicle movement.
Core Scientific Principles Behind Distributed Optical Fiber Sensors
The foundation of distributed fiber optic intrusion sensor systems lies in the analysis of light behavior within optical fibers. これら systems work by sending laser pulses through an optical fiber and analyzing changes in the backscattered light caused by external disturbances affecting the fiber.
Modern systems utilize several scientific principles:
- Rayleigh Backscattering: Distributed fiber-optic sensing using Rayleigh backscatter detects intrusion-caused vibrations with exceptional sensitivity. This technology forms the basis for most distributed acoustic and vibration sensing systems.
- ブリルアン散乱: Distributed fiber optic sensing Raman Brillouin technologies enable temperature and strain measurements along the entire fiber length, ideal for detecting fence-cutting attempts that generate heat.
- ラマン散乱: The foundation for 分散型光ファイバー温度検知, Raman-based systems measure temperature variations with high precision, detecting thermal signatures associated with certain intrusion methods.
According to research published in the Journal of Lightwave Technology, モダンな distributed optical fiber sensing systems can detect vibrations with spatial resolution as fine as 1-2 meters over distances exceeding 50 キロメートル (Wang et al., 2022). This remarkable capability enables precise intruder localization across vast protected areas.
の種類 分散型光ファイバーセンシング システム
Several specialized sensing technologies are employed in perimeter security applications:
| テクノロジー | 検出能力 | 主な用途 | 主な利点 |
|---|---|---|---|
| 分散型音響センシング (ザ) | Acoustic/vibrational disturbances | Perimeter security, パイプライン監視 | Excellent for detecting walking, 掘る, 車両の動き |
| 分散型振動センシング (DVS) | Mechanical vibrations with enhanced sensitivity | High-security perimeters, 重要なインフラ | Superior classification capabilities, lower false alarm rates |
| 分散型温度センシング (DTS) | ファイバーに沿った温度変化 | Fence cutting detection, 火災検知 | Detects thermal signatures from cutting tools and fire threats |
| 分布ひずみセンシング (DSS) | Physical strain/deformation | Fence climbing, structural monitoring | Detects physical manipulation of protection barriers |
| Hybrid Sensing Systems | Combined sensing modalities | Comprehensive security applications | Multi-threat detection through single fiber infrastructure |
モダンな distributed fiber optic intrusion sensor systems for monitoring long perimeters increasingly employ hybrid sensing approaches, combining multiple technologies to achieve comprehensive threat detection through a single fiber optic installation.
Critical Applications of Distributed Fiber Optic Intrusion Sensor Systems
The versatility of 配布された fiber optic intrusion sensor systems for monitoring long perimeters makes them ideal for protecting a wide range of critical assets and infrastructure.
Border and Perimeter Security Implementations
For international borders, military installations, and critical infrastructure perimeters, distributed fiber optic intrusion sensor systems provide unmatched coverage and detection capabilities. これら systems excel in challenging environments where conventional security technologies struggle to provide reliable protection.
A typical border security implementation involves burying a sensing fiber along the border line, creating an invisible detection zone that can identify and classify approaching threats. The system’s ability to differentiate between human intruders, vehicles, 動物, and environmental disturbances dramatically reduces false alarms while ensuring genuine threats are detected immediately.
According to a Department of Homeland Security evaluation, distributed fiber optic sensing for homeland security applications demonstrated a 92% probability of detection for human intruders with a false alarm rate below 1 per day per 10km of protected perimeter.
Pipeline Protection Using Distributed Fiber Optic Sensors for Pipeline Protection
油, ガス, and water pipelines represent critical infrastructure that often traverses remote and difficult-to-monitor regions. Long-range pipeline monitoring by distributed fiber optic センシング provides comprehensive protection against third-party interference, the leading cause of pipeline damage.
Pipeline leak detection using distributed fiber optic sensing systems can identify threats from unauthorized excavation, tampering attempts, and even early-stage leaks. The fiber is typically installed either directly alongside the pipeline or within the same right-of-way corridor.
これら systems detect the distinct vibration signatures produced by excavation equipment, hand digging, or vehicle approaches near the pipeline. Research from the Pipeline Technology Conference demonstrates that distributed fiber optic acoustic sensor for leak detection can identify unauthorized excavation activities at distances up to 15 meters from the sensing cable, providing critical early warning before damage occurs.
重要なインフラストラクチャの保護
発電 facilities, 水処理プラント, データセンター, and transportation infrastructure face increasing physical security threats. Distributed fiber optic intrusion sensor systems provide comprehensive protection by creating multiple detection zones throughout these facilities.
For power utilities, distributed fiber optic sensing and dynamic rating of power cables offers dual benefits: security monitoring plus real-time thermal monitoring of power cables to prevent overheating and failure. This multi-purpose application maximizes the return on investment for the sensing infrastructure.
At water treatment facilities, これら systems can simultaneously monitor perimeter security, detect unauthorized approaches to critical equipment, and provide early warning of structural issues in water containment systems.
Military and High-Security Applications
For military installations, 政府施設, and high-security corporate campuses, distributed fiber optic intrusion sensor systems for monitoring long perimeters provide layered security protection with exceptional reliability.
A typical high-security deployment might include:
- Outer perimeter fiber buried 20-30cm underground to detect approaching threats
- Fence-mounted fiber to detect climbing or cutting attempts
- Inner detection zones surrounding critical buildings or assets
- Underground sensors to detect tunneling attempts
の systems are often integrated with video surveillance, アクセス制御, and security response protocols to create comprehensive security ecosystems that provide defense in depth against determined adversaries.
Hardware Components of Distributed Fiber Optic Intrusion Sensor Systems
Creating effective distributed fiber optic intrusion sensor systems for monitoring long perimeters requires specialized hardware components working together as an integrated system.
Interrogator Units: The Brain of the System
The interrogator unit represents the technological heart of any distributed fiber optic sensor system. This sophisticated device sends light pulses through the fiber and analyzes the returning signals to detect and classify disturbances.
現代的な 配布された 光ファイバーセンサー 尋問者 incorporates several key components:
- レーザー光源: Provides the high-coherence light pulses required for sensing
- Optical Receivers: Detect and measure the backscattered light signals
- 信号処理 ハードウェア: Converts optical signals into digital data
- 解析ソフトウェア: Interprets signal patterns to identify and classify events
- 通信インターフェース: Connect to security 管理システム
Advanced interrogators like those from FJINNO can monitor distances up to 100km with spatial resolution as fine as 1-2 メートル, providing unprecedented coverage from a single device.
専門化された Distribution Fiber Optic Cable 種類
その間 分散型光ファイバーセンシング can utilize standard telecom fibers, 専門化された distribution fiber optic cables optimized for sensing applications provide superior performance in security deployments.
Key cable types include:
- Armored Sensing Cables: Reinforced cables for direct burial applications
- Fence-Mounted Cables: Designed to maximize sensitivity to fence disturbances
- Dual-Purpose Cables: Combined sensing and communications capabilities
- Distributed Temperature Sensing Fiber Optic Cable: Optimized for temperature monitoring
- 多目的 Distribution Fiber Optic Cable: Versatile cables for varied applications
Cable selection depends on the specific application requirements, 環境条件, とインストール方法. フェンス取り付け用途向け, cables with enhanced sensitivity to mechanical vibrations are preferred, while direct burial applications require robust armored cables with moisture protection.
Connection and Distribution Infrastructure
効果的 distributed fiber optic intrusion sensor systems require specialized connection and distribution components:
| 成分 | 関数 | 主な仕様 | インストールに関する考慮事項 |
|---|---|---|---|
| Fiber Optic Distribution Box | Protects splice points and connections | 環境保護, port count | Must be secured against tampering |
| アウトドア Fiber Optic Distribution Box | Weather-protected connection points | IP67+ rating, 耐紫外線性 | Requires proper grounding and drainage |
| Fiber Optic Distribution Cabinet | Houses multiple connections for large systems | Access security, 環境管理 | Must be located in secured areas |
| Optical Fiber Distribution Frame | Organizes connections in control centers | Port density, ケーブル管理 | Critical for system maintenance |
| Fiber Optic Distribution Hub | Central connection point for branched systems | Port count, expandability | Strategic placement for system growth |
For critical security applications, ruggedized components like 8 port waterproof fiber optic distribution boxes ensure system reliability in harsh environmental conditions. Larger installations might require 16 cores fiber optic distribution boxes to accommodate multiple sensing zones or redundant configurations.
Advanced Features of Modern Distributed Fiber Optic Intrusion Sensor Systems
The latest generation of distributed fiber optic intrusion sensor systems for monitoring long perimeters incorporates sophisticated capabilities that dramatically enhance security effectiveness and operational efficiency.
AI-Powered Event Classification
The most significant advancement in modern systems is the application of artificial intelligence to event classification. These algorithms analyze vibration signatures to identify specific activities with remarkable accuracy.
Advanced systems can distinguish between:
- Human movement patterns (walking, running, crawling)
- Vehicle types and proximity
- Digging activities (manual vs. 機械的)
- Fence interactions (クライミング, 切断)
- 環境要因 (風, 雨, wildlife)
Research published in IEEE Sensors Journal demonstrates that AI-enhanced 分散型光ファイバーセンシング システム can achieve classification accuracy exceeding 95% 横切って 24 different event types (Zhang et al., 2023). This capability transforms raw vibration data into actionable security intelligence while dramatically reducing false alarms.
Distributed Fiber-Optic Sensors for Vibration Detection with Multi-Zone Configuration
モダンな distributed fiber-optic sensors for vibration detection allow for sophisticated zone-based configuration with different sensitivity levels and alarm thresholds for various sections of the protected perimeter.
This capability enables security operators to:
- Create high-sensitivity zones around 重要な資産
- Implement graduated response zones with increasing security levels
- Adjust sensitivity based on time of day or threat level
- Configure different alarm thresholds for different threat types
- Implement virtual “trip-wire” zones for immediate alarm activation
This zoning capability maximizes system effectiveness while optimizing security resource allocation. 例えば, a nuclear facility might implement maximum sensitivity around critical reactor buildings while allowing more permissive settings near administrative areas.
Integration with Security Management Systems
For maximum effectiveness, distributed fiber optic intrusion sensor systems for monitoring long perimeters integrate seamlessly with broader security ecosystems including video surveillance, アクセス制御, およびセキュリティ管理プラットフォーム.
When integrated with video 管理システム, these sensors can automatically direct PTZ cameras to the precise location of detected events, enabling immediate visual verification. いくつかの advanced implementations pair fiber sensing with automated drone response – when the fiber detects an intrusion, security drones automatically launch and navigate to the exact coordinates for aerial assessment.
This integration capability transforms distributed fiber optic intrusion sensor システム from standalone detection tools into comprehensive security force multipliers, dramatically improving response effectiveness while reducing personnel requirements.
Implementation Considerations for Distributed Fiber Optic Intrusion Sensor Systems
実装に成功 distributed fiber optic intrusion sensor systems for monitoring long perimeters requires careful planning and consideration of several critical factors.
インストール方法とベストプラクティス
The installation method significantly impacts the performance of 配布された 光ファイバーセンサー. Different perimeter types and security requirements demand specific installation approaches:
| 設置方法 | Perimeter Type | Detection Capabilities | インストールの複雑さ |
|---|---|---|---|
| Direct Fence Mounting | Fenced perimeters | Climbing, 切断, インパクト | 中くらい |
| Shallow Burial (15-30cm) | Open perimeters, アプローチ | Walking, 車両の動き, 掘る | 中~高 |
| Deep Burial (40-60cm) | High-security zones | Heavy equipment, tunneling | 高い |
| Conduit Installation | Structured perimeters | アプローチ, barrier contact | 中くらい |
| Wall/Structure Integration | Building perimeters | Climbing, breaching attempts | 高い |
Best practices for fiber installation include:
- Maintaining minimum bend radius specifications to prevent signal loss
- Properly securing fence-mounted cables to maximize sensitivity
- Using appropriate backfill materials for buried installations
- Installing armored cables in areas vulnerable to animal damage
- Implementing redundant fiber paths for critical security zones
Environmental Calibration and Performance Optimization
One of the most significant challenges in 分散型光ファイバー センシング deployments is environmental calibration. Each installation environment presents unique background conditions that affect detection sensitivity.
Modern systems address this challenge through adaptive algorithms that learn normal environmental patterns and adjust sensitivity thresholds accordingly. This self-calibration capability dramatically reduces false alarms while maintaining high detection probability for genuine threats.
For optimal performance, systems should be configured to account for:
- Local weather patterns and seasonal variations
- Wildlife activity in the protected area
- Nearby infrastructure (roads, 鉄道) generating background vibrations
- Normal operational activities within the protected perimeter
- Soil and ground conditions affecting vibration propagation
Advanced systems like those from FJINNO incorporate machine learning algorithms that continuously refine their environmental models, achieving progressively lower false alarm rates while maintaining high detection sensitivity.
Integration with Existing Security Infrastructure
For maximum effectiveness, distributed fiber optic intrusion sensor systems for monitoring long perimeters should integrate with existing security systems and operational procedures.
Key integration considerations include:
- Compatibility with security management platforms and communications protocols
- Alarm verification procedures using complementary technologies
- Response protocols based on threat classification and location
- Data storage and forensic analysis capabilities
- System redundancy and failure mode operations
ほとんど 先進的なシステム offer standard integration interfaces including XML, JSON, and SNMP for connecting with security management systems, as well as direct relay outputs for simpler integrations with conventional alarm panels.
Market Overview: The Growing Distributed Fiber Optic Sensor Market
の世界市場 配布された 光ファイバーセンシング技術 is experiencing significant growth driven by increasing security concerns and expanding application possibilities.
Market Size and Growth Trends
According to recent market analysis, the global 分散型光ファイバーセンサー 市場 is projected to reach $2.2 billion by 2026, growing at a compound annual growth rate (CAGR) の 11.4% から 2021. This growth is driven by several factors:
- Increasing threats to critical infrastructure requiring enhanced perimeter security
- Growing pipeline infrastructure requiring cost-effective monitoring solutions
- Rising demand for border security and perimeter protection
- Technological advancements improving system capabilities while reducing costs
- Increasing adoption in emerging markets, particularly in Asia-Pacific and 中東 regions
の distributed fiber optic sensor market is diversifying across various application segments, with perimeter security, パイプライン監視, and critical infrastructure protection representing the fastest-growing sectors.
Regional Market Developments
の 分散型光ファイバー sensing market shows distinct regional trends:
- 北米: Leading market share driven by homeland security applications, パイプライン監視, 重要なインフラストラクチャの保護
- ヨーロッパ: Strong growth in border security applications and industrial 施設の保護
- アジア太平洋地域: Fastest growing region with significant investments in critical infrastructure security
- 中東: High adoption rates for oil and gas infrastructure protection
- アフリカ: Emerging market with focus on mining operation security and pipeline protection
Regional market development is often influenced by local security challenges, 規制要件, and available security budgets. North America and Europe currently lead in sophisticated AI-enhanced systems, while Asia-Pacific shows the fastest adoption growth for perimeter protection applications.
Technology Evolution and Future Trends
の technology landscape for distributed fiber optic intrusion sensor systems for monitoring long perimeters 急速に進化し続ける, with several emerging trends shaping future development:
- Advanced AI and Edge Computing: Increasingly sophisticated classification algorithms with on-device processing capabilities
- Extended Range Capabilities: Systems capable of monitoring 150+ kilometers from a single interrogator
- Enhanced Spatial Resolution: Sub-meter location accuracy even over extended distances
- Quantum Sensing Techniques: Emerging quantum technology applications for ultra-sensitive detection
- Integrated Multi-Sensing Platforms: Combined vibration, 温度, and strain sensing in unified systems
These technological advancements continue to expand the application possibilities for distributed fiber optic センシング while improving performance and reducing deployment costs.
フジノ: Industry Leader in Distributed Fiber Optic Intrusion Sensor Systems
Among the manufacturers of distributed fiber optic intrusion sensor systems for monitoring long perimeters, FJINNO has established itself as a technology leader with superior performance characteristics and application-specific optimization.
Advanced System Capabilities
フジノさん 分散センシング systems offer several distinctive advantages:
- Industry-Leading Range: Up to 100km monitoring distance from a single interrogator unit
- Superior Spatial Resolution: Precise location accuracy of 1-2 meters even at maximum range
- Advanced Classification: AI-powered algorithms that differentiate between 24+ intrusion types
- 環境適応: Self-calibrating systems that automatically adjust to changing conditions
- Extreme Temperature Tolerance: Operational range from -40°C to +70°C for deployment in any climate
- Multi-Zone Configuration: Customizable security zones with independent sensitivity settings
These capabilities make FJINNO systems particularly effective for challenging security applications where conventional technologies struggle to provide reliable protection.
Application-Specific Solutions
Rather than offering one-size-fits-all systems, FJINNO develops application-specific solutions optimized for particular security challenges:
- PerimeterGuard: 専門化された system for fence-line and perimeter monitoring
- PipelineDefender: Optimized for long-distance pipeline protection against third-party interference
- CriticalAssetMonitor: Multi-zone system for high-security facilities with layered protection
- BorderSentry: Extended-range system for international border protection
- InfrastructureProtector: Combined security and structural monitoring for critical assets
Each solution incorporates hardware, ソフトウェア, and installation methodologies specifically designed for the particular application, ensuring optimal performance in real-world conditions.
Implementation Excellence and Support
FJINNO’s approach extends beyond superior technology to include comprehensive implementation support:
- Site-Specific Engineering: カスタマイズされた system design based on specific perimeter characteristics
- Installation Expertise: Specialized teams with extensive deployment experience
- Calibration and Commissioning: On-site optimization for maximum system effectiveness
- オペレータートレーニング: Comprehensive programs for security personnel
- 24/7 テクニカルサポート: Continuous assistance for critical security applications
- Regular Software Updates: Ongoing improvement of detection and classification capabilities
This comprehensive approach ensures that FJINNO systems deliver exceptional performance from day one and maintain their effectiveness throughout their operational lifespan.
よくある質問について Distributed Fiber Optic Intrusion Sensor Systems
What is the detection range of distributed fiber optic sensing systems?
モダンな distributed fiber optic intrusion sensor systems for monitoring long perimeters can monitor distances ranging from 40km to 100km from a single interrogator unit, depending on the specific technology and system configuration. 高度な systems from manufacturers like FJINNO achieve the upper end of this range while maintaining high spatial resolution and sensitivity.
The effective range depends on several factors including the type of interrogator, 繊維の品質, installation method, および環境条件. For critical security applications requiring maximum range, single-mode fibers with specialized interrogators optimized for long-distance monitoring provide the best performance.
How does weather affect the performance of fiber optic intrusion detection?
Weather conditions can influence the performance of distributed fiber optic intrusion sensor systems, but advanced systems incorporate sophisticated environmental compensation algorithms that minimize these effects. Heavy rain, high winds, or snow may increase background noise levels, potentially affecting detection sensitivity in basic systems.
Modern systems employ several strategies to maintain performance in adverse weather:
- Dynamic threshold adjustment based on current environmental conditions
- Advanced filtering algorithms that isolate weather-related signals
- Pattern recognition that distinguishes weather effects from security threats
- Zone-specific sensitivity adjustments during severe weather events
High-quality systems from manufacturers like FJINNO maintain detection reliability even during severe weather conditions, with false alarm rates typically increasing by less than 10% during storms compared to calm conditions.
What is the difference between DAS, DVS, and DTS sensing technologies?
分散型音響センシング (ザ), 分散振動 センシング (DVS), そして 分散型温度センシング (DTS) represent different approaches to 分散型光ファイバーセンシング, each with specific capabilities:
- ザ systems focus on detecting and analyzing acoustic signals affecting the fiber, making them ideal for identifying sounds like digging, walking, or vehicle movement. They typically operate in the acoustic frequency range (10Hz~10kHz).
- DVS systems represent a specialized evolution of acoustic sensing optimized specifically for detecting mechanical vibrations relevant to security applications. They feature enhanced sensitivity to low-frequency vibrations and sophisticated classification algorithms specifically trained on security-relevant events.
- DTS systems measure temperature changes along the fiber, making them ideal for detecting thermal events like fires or the heat generated by cutting tools. They typically achieve temperature resolution of 0.1°C with spatial resolution of 1-2 メートル.
Many modern security applications utilize hybrid systems that combine multiple sensing modalities for comprehensive threat detection through a single fiber infrastructure.
How do installation methods affect system performance?
The installation method significantly impacts the performance of distributed fiber optic intrusion sensor systems for monitoring long perimeters. Different installation approaches optimize the system for detecting specific types of threats:
- Fence-Mounted Installation: Maximizes sensitivity to climbing, 切断, or impact on the fence. The fiber should be securely attached to the fence fabric without excessive slack that might dampen vibrations.
- Shallow Burial (15-30cm): Optimized for detecting footsteps, running, and light vehicle movement. Soil compaction and composition significantly affect sensitivity.
- Deep Burial (40-60cm): Better for detecting heavy vehicles and some tunneling activities, but less sensitive to pedestrian movement.
- Wall/Structure Integration: Embedded fibers detect climbing or breaching attempts on walls or structural elements.
For optimal performance, installation should follow manufacturer specifications regarding fiber type, 埋設深さ, attachment methods, and minimum bend radius requirements. Professional installation by experienced teams significantly improves system effectiveness compared to general contractors unfamiliar with sensing fiber requirements.
What is the typical cost of implementing a distributed fiber optic perimeter security system?
The cost of implementing distributed fiber optic intrusion sensor systems for monitoring long perimeters varies based on several factors including perimeter length, system complexity, and required sensitivity.
Typical cost components include:
- Interrogator Unit: $75,000-$200,000 depending on range, 解決, and capabilities
- センシングファイバー: $5-$15 per meter depending on type and armoring
- インストール: $15-$50 per meter depending on method and terrain
- Integration Hardware: $10,000-$50,000 for connection with existing security systems
- Software and Configuration: $15,000-$75,000 depending on customization requirements
For a typical 10km perimeter with advanced sensing capabilities, total implementation costs range from $300,000 に $750,000. While this represents a significant investment, the per-kilometer cost decreases substantially for longer perimeters since a single interrogator can monitor up to 100km.
When evaluated on a 10-year total cost of ownership basis, distributed fiber optic intrusion sensor システム often prove more cost-effective than conventional technologies due to lower maintenance requirements, reduced false alarms, and superior detection capabilities that prevent costly security breaches.
Distributed fiber optic intrusion sensor systems for monitoring long perimeters represent a paradigm shift in perimeter security, offering capabilities that simply cannot be matched by conventional technologies. From their ability to provide continuous monitoring over vast distances to their sophisticated threat classification and precise location capabilities, これら systems transform how we approach the protection of critical assets とインフラストラクチャ.
As security threats continue to evolve, の advanced capabilities of distributed fiber sensing provide a powerful technological countermeasure that is extraordinarily difficult to defeat. Whether protecting international borders, 重要なインフラ, or high-value assets, these systems deliver exceptional security performance while reducing long-term operational costs.
For organizations serious about implementing best-in-class perimeter security, フジノさん advanced distributed fiber optic intrusion sensor systems represent the gold standard in comprehensive, reliable protection. Their industry-leading sensing range, superior threat classification capabilities, and proven performance in challenging environments make them the preferred choice for protecting the world’s most critical assets and perimeters.
光ファイバー温度センサー, インテリジェント監視システム, 中国の分散型光ファイバーメーカー
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INNO 光ファイバー温度センサー ,温度監視システム.



