1. 方案概述 1. Solution Overview
本方案采用分布式光纤测温（DTS）系统，满足5000平方米以上大型厂房的温度监测需求，开创了一根光纤兼具传感器与信号传输线的创新监测模式。 This solution adopts the Distributed Temperature Sensing (DTS) system to meet temperature monitoring demands of large factories above 5,000 square meters. It creates an innovative monitoring mode where one optical fiber acts as both sensor and signal transmission line.
系统可对厂房整体温度场进行连续监测，同时对重点设备区域进行精准测温，实现无死角、无盲区的全覆盖温度传感。 The system enables continuous monitoring of the overall factory temperature field and precise temperature detection in specific equipment areas, achieving full-coverage temperature sensing without dead zones or blind spots.
DTS系统以感温光纤为温度传感器，具备阻燃、防爆、耐腐蚀、耐高压、抗电磁干扰能力强等特点，可精确测量光纤沿途各点温度，准确定位温度异常点。 Using temperature-sensing optical fiber as the temperature sensor, the DTS system features flame resistance, explosion proofing, corrosion resistance, high voltage endurance and strong anti-electromagnetic interference capability. It can accurately measure temperatures at all positions along the fiber and pinpoint abnormal temperature spots.
前端无源设计优势 Passive Front-end Design Advantages
前端采用全无源设计，无需供电，无网络接入限制；光纤作为传感与传输介质，不受电磁干扰，无燃烧爆炸风险，适用于高湿度、极端温度、腐蚀等恶劣环境。 The front-end adopts a fully passive design with no power supply or network access restrictions. As sensing and transmission media, optical fibers are immune to electromagnetic interference and free from combustion & explosion risks, suitable for harsh environments including high humidity, extreme temperatures and corrosive conditions.
2. 工作原理 2. Working Principle
DTS系统基于光纤背向拉曼散射原理与光时域反射（OTDR）技术实现温度测量与空间定位。 The DTS system realizes temperature measurement and spatial positioning based on optical fiber backward Raman scattering principle and Optical Time Domain Reflectometry (OTDR) technology.
2.1 测温原理 2.1 Temperature Measurement Principle
系统向光纤发射激光脉冲，光与光纤分子相互作用产生散射光。对温度敏感的反斯托克斯光与相对稳定的斯托克斯光的强度比值，与温度变化呈严格的函数关系。通过解调该比值变化，可精确计算光纤上各点的实时温度。 The system emits laser pulses into optical fibers. Light interacts with fiber molecules to generate scattered light. The intensity ratio between temperature-sensitive anti-Stokes light and relatively stable Stokes light follows a strict functional relationship with temperature changes. By demodulating such ratio variations, the real-time temperature at every point along the fiber can be accurately calculated.
2.2 空间定位原理 2.2 Spatial Positioning Principle
结合光脉冲传输的时间差，系统可精确确定光纤上每个测温点的位置，实现温度检测与空间定位一体化。 Combined with the time difference of optical pulse transmission, the system accurately locates each temperature measuring point along the fiber, integrating temperature detection and spatial positioning.
2.3 核心特点 2.3 Core Features
- 单根光纤可实现长达数十公里的连续温度监测Continuous temperature monitoring up to dozens of kilometers via a single optical fiber
- 每0.05米一个独立监测点，相当于数万个离散温度传感器Independent monitoring points every 0.05 meters, equivalent to tens of thousands of discrete temperature sensors
- 利用光纤连续空间布局，传感与数据传输一体化Integrated sensing and data transmission leveraging the continuous spatial layout of optical fibers
3. 方案设计 3. Solution Design
3.1 系统组成 3.1 System Composition
| 组件Component | 功能描述Function Description |
|---|---|
| DTS测温主机DTS Temperature Measuring Host | 核心处理单元，负责激光发射、信号接收、数据处理与分析Core processing unit for laser emission, signal reception, data processing and analysis |
| 感温光纤Temperature-sensing Optical Fiber | 兼具温度传感器与信号传输介质，铺设于厂房各处及重点设备Serves as both temperature sensor and signal transmission medium, laid out across factories and key equipment |
| 可视化软件平台Visualization Software Platform | 实时温度分布显示、历史数据查询、多级报警管理Real-time temperature distribution display, historical data query and multi-level alarm management |
| 通信接口Communication Interface | 支持Modbus RTU、Modbus TCP等协议，可无缝接入现有监控系统Supports Modbus RTU, Modbus TCP and other protocols for seamless access to existing monitoring systems |
3.2 5000㎡以上厂房光纤布局方案 3.2 Optical Fiber Layout Scheme for Factories above 5,000㎡
采用网格铺设+局部加密的组合布局策略 Adopt a combined layout strategy of grid arrangement + enhanced local deployment
(1) 厂房整体温度场监测 - 网格布局 (1) Grid Layout for Overall Factory Temperature Field Monitoring
- 沿厂房屋顶钢架蛇形/S形铺设光纤，形成全覆盖温度监测网格Lay optical fibers in serpentine/S-shape along factory roof steel frames to form a full-coverage temperature monitoring grid
- 沿四周墙体、立柱布置光纤，监测环境温度分布Arrange fibers along surrounding walls and columns to monitor ambient temperature distribution
- 根据监测精度要求，光纤间距设置为5-10米，消除监测盲区Set fiber spacing at 5-10 meters according to monitoring accuracy requirements to eliminate monitoring blind areas
- 光纤采用石英玻璃材质，完全电绝缘，不受电磁干扰，信号传输稳定，不受金属结构和墙体影响Made of quartz glass, the fiber is fully electrically insulated and free from electromagnetic interference, with stable signal transmission unaffected by metal structures and walls
(2) 重点设备区域 - 加密布局 (2) Enhanced Layout for Key Equipment Areas
- 变压器、配电柜、开关柜周围采用双绕或表面贴装方式密集铺设光纤Lay dense fibers around transformers, power distribution cabinets and switchgears via double-wound or surface-attached installation
- 沿电缆沟、电缆桥架随电缆走向部署光纤Deploy fibers along cable trenches and cable bridges following cable routing
- 重点覆盖易燃材料存储区、高温生产区域Focus on coverage of flammable material storage zones and high-temperature production areas
- 单光纤通道最大支持12公里长度，一台主机可扩展至16通道，完全满足大型厂房多区域监测需求Single fiber channel supports a maximum length of 12 km, and one host can expand up to 16 channels, fully meeting multi-zone monitoring requirements for large factories
(3) 布局注意事项 (3) Layout Notes
- 光纤具有耐腐蚀、防火、防水特性，使用寿命超过30年The optical fiber features corrosion resistance, fire resistance and water resistance with a service life of over 30 years
- 全无源设计，现场无需供电，安装便捷Fully passive design requires no on-site power supply for easy installation
- 本质安全型，具备防雷性能，零电气风险Intrinsically safe with lightning protection performance and zero electric risks
- 适应高湿度、高粉尘、机械振动等工业环境Adaptable to industrial environments with high humidity, heavy dust and mechanical vibration
3.3 分区管理 3.3 Zonal Management
系统支持按厂房功能区域划分独立监测区域： The system supports independent monitoring zones divided by factory functional areas:
- 生产区域Production Area
- 仓储区域Warehouse & Storage Area
- 设备区域（配电室、机房等）Equipment Area (Power Distribution Room, Machine Room, etc.)
- 办公及辅助区域Office & Auxiliary Area
每个区域可独立设置报警温度阈值及参数，最多可划分数百个区域，实现精细化温度管理。 Independent alarm temperature thresholds and parameters can be set for each zone, with a maximum of hundreds of divided zones to realize refined temperature management.
4. 技术优势 4. Technical Advantages
4.1 综合成本极低 4.1 Ultra-low Comprehensive Cost
- 采用标准通信光纤，无需定制传感器，大幅降低材料、设计、安装及维护成本Standard communication optical fibers are adopted without customized sensors, cutting down material, design, installation and maintenance costs
- 传感与传输一体化，省去大量离散温度传感器Integrated sensing and transmission function eliminates the need for massive discrete temperature sensors
- 无需像传统传感器每3-5年定期更换或标定No regular replacement or calibration required every 3-5 years like traditional sensors
- 运行期间近乎免维护，长期成本远低于传统方案Nearly maintenance-free in operation with far lower long-term costs
- 20公里光纤等同于20,000个传统传感器的监测能力20 kilometers of optical fiber equals the monitoring capacity of 20,000 traditional sensors
4.2 全范围无盲区监测 4.2 Full-range Blind-spot-free Monitoring
- 单光纤支持最长12公里连续监测Single fiber supports continuous monitoring up to 12 km
- 最大空间分辨率可达0.1米Maximum spatial resolution reaches 0.1 meters
- 适用于5000平方米以上大型厂房的大空间温度监管Ideal for large-space temperature supervision in factories over 5,000 square meters
4.3 高精度设备定位 4.3 High-precision Equipment Positioning
- 亚米级定位精度（≤0.4米）Sub-meter positioning accuracy (within 0.4 meters)
- 一旦发生过热，快速定位温度异常点及故障设备区域Rapidly locate abnormal temperature spots and faulty equipment areas once overheating occurs
- 支持多种报警模式：定温报警、区域温差报警、快速温升报警Supports multiple alarm modes: fixed-temperature alarm, regional temperature difference alarm and rapid temperature rise alarm
4.4 复杂工业场景强适应性 4.4 Strong Adaptability to Complex Industrial Scenarios
- 抗电磁干扰，不受高压电缆、变频设备干扰Anti-electromagnetic interference, free from disturbance of high-voltage cables and frequency conversion equipment
- 本质安全型无电检测，适用于易燃易爆场所Intrinsically safe non-electric detection, applicable to flammable and explosive sites
- 耐腐耐高温性能优异，适用于化工、高温车间Excellent corrosion and high temperature resistance for chemical and high-temperature workshops
- 全光信号传输，不受金属建筑、墙体结构影响All-optical signal transmission without impact from metal buildings and wall structures
4.5 快速响应性能 4.5 Fast Response Performance
- 单次测量最短时间：3秒Minimum single measurement time: 3 seconds
- 温度分辨率：0.01℃，测温精度：±1℃Temperature resolution: 0.01℃, measuring accuracy: ±1℃
- 温度异常后30秒内即可上传报警信号Alarm signals can be uploaded within 30 seconds once abnormal temperatures are detected
5. 系统功能 5. System Functions
| 功能模块Function Module | 详细功能Detailed Functions |
|---|---|
| 实时监测Real-time Monitoring | 7×24小时全厂房温度连续监测24/7 continuous full-factory temperature tracking |
| 可视化展示Visual Display | 分区平面图、温度分布曲线、重点监测点实时趋势曲线Zonal layout diagram, temperature distribution curve and real-time trend curve of key monitoring points |
| 多级报警Multi-level Alarm | 定温报警、温差报警、快速温升报警、光纤断裂报警Fixed temperature alarm, temperature difference alarm, rapid temperature rise alarm and fiber breakage alarm |
| 精确定位Precise Positioning | 快速锁定故障设备及温度异常区域Fast locking of faulty equipment and abnormal temperature zones |
| 历史数据管理Historical Data Management | 历史数据查询、展示及趋势分析，供维护参考Historical data query, display and trend analysis for maintenance reference |
| 系统联动System Linkage | 与消防系统互联，实现隐患早发现、快处置Interconnection with fire protection systems for early detection and rapid disposal of hazards |
6. 典型技术指标 6. Typical Technical Specifications
| 参数Parameter | 参考值Reference Value |
|---|---|
| 单通道最大监测距离Maximum Single-channel Monitoring Distance | 12公里12 km |
| 空间分辨率Spatial Resolution | 0.1m ~ 1m0.1 m ~ 1 m |
| 测温精度Temperature Measuring Accuracy | ±0.5℃ ~ ±1℃±0.5℃ ~ ±1℃ |
| 温度分辨率Temperature Resolution | 0.01℃ ~ 0.1℃0.01℃ ~ 0.1℃ |
| 最短测量时间Minimum Measuring Time | 每通道3秒3 seconds per channel |
| 定位精度Positioning Accuracy | ≤0.4m（亚米级）≤0.4 m (sub-meter level) |
| 光纤使用寿命Optical Fiber Service Life | 超过30年Over 30 years |
| 单主机最大可扩展通道数Maximum Expandable Channels per Host | 16通道16 channels |
7. 方案总结 7. Solution Summary
本方案以DTS分布式光纤测温技术为核心，充分利用光纤兼具传感与传输的双重功能，针对5000平方米以上大型厂房实现： Centered on DTS distributed optical fiber temperature measuring technology, this solution fully utilizes the dual functions of optical fibers as sensors and transmission media for large factories above 5,000 square meters:
- 全面覆盖：网格光纤布局实现全厂房无盲区监测Overall coverage: Grid fiber layout realizes full-factory monitoring without blind spots
- 精准分区：高精度空间定位，快速锁定异常设备与区域Accurate zoning: High-precision spatial positioning targets abnormal equipment and areas efficiently
- 成本经济：只需光纤铺设成本，无需额外传感器，维护工作量低Cost-efficient: Only fiber laying cost is required with no extra sensors and low maintenance workload
- 强兼容性：不受金属、建筑干扰，抗电磁干扰，本质安全Strong compatibility: Immune to metal and building interference, electromagnetic-resistant and intrinsically safe
本方案广泛应用于电缆隧道、大型工业厂房、变电站、仓储库房等场所的温度监测与火灾预警，是5000平方米以上厂房温度监管的最优选择。 Widely applied in temperature monitoring and fire early warning for cable tunnels, large industrial plants, substations and warehouses, this DTS solution is the optimal choice for temperature supervision in factories over 5,000 square meters.
