Integrated pipe gallery monitoring system

The comprehensive pipe gallery monitoring system, also known as the common ditch, is a tunnel space built underground in the city, which integrates various pipelines such as municipal, power, communication, gas, water supply and drainage. It is equipped with dedicated inspection ports, lifting ports and monitoring systems, and implements unified planning, design, construction and management. The construction of a comprehensive pipe gallery system can effectively alleviate the contradiction between urban development and the shortage of land resources in China, and is of great significance for improving land utilization and expanding urban survival and development space.

　　1.1 Introduction to Comprehensive Pipe Gallery

GIS/CityIntegrated pipe gallery monitoring systemAlso known as a common ditch, it is a tunnel space built underground in the city that integrates various pipelines such as municipal, power, communication, gas, and water supply and drainage. It is equipped with specialized inspection ports, lifting ports, and monitoring systems, and implements unified planning, design, construction, and management. The construction of a comprehensive pipe gallery system can effectively alleviate the contradiction between urban development and the shortage of land resources in China, and is of great significance for improving land utilization and expanding urban survival and development space.

Urban underground pipelines are the lifeline of urban operation, and achieving pipeline information sharing, real-time monitoring, and centralized control are the basic requirements of underground pipeline management. They play an important role in urban safety and pipeline operation, and promote urbanization construction.

　　1.2 Requirement analysis

The construction of a comprehensive pipe gallery is a systematic project that not only requires the design of reasonable pipe compartments to allow urban service pipelines to enter the gallery, but also focuses on but is not limited to the following pipelines entering the gallery: natural gas pipelines, thermal pipelines, water supply pipelines, recycled water pipelines, rainwater pipelines, power cables, communication cables, broadcasting and television, etc. It also needs to cover facilities such as fire protection, power supply, lighting, monitoring and alarm, ventilation, and drainage. Concentrate and share scattered and segmented regulatory resources through a comprehensive pipe gallery, achieve a system integration of pipe gallery monitoring, and realizesameHighly integrated, truly achieving a pattern of shared management and collaborative governance.

GIS/CityIntegrated pipe gallery monitoring systemIt is a highly comprehensive control system. Due to the different technical systems and standards adopted by each subsystem, it is necessary to consider not only the requirements for environmental and equipment monitoring, communication, and geographic information, but also the needs for image monitoring in disaster and accident warning, security prevention, and other aspects. At the same time, it is also necessary to consider the integration of supporting systems such as alarm and access control, as well as linkage with the broadcasting system, to eliminate the problem of information silos caused by system heterogeneity. Based on the characteristics of comprehensive pipe gallery monitoring and management, Jiuchuang Technology has launched a monitoring and management solution with JC1000 software platform as the core. Through the construction of monitoring and alarm systems, three-dimensional geographic information, equipment operation information, environmental information, security prevention information, video images, warning and alarm signals, management information, and other content are integrated to establish a unified resource library. Combined with distributed real-time historical databases, pre alarm analysis, big data analysis, and fully switched networking, these advantageous technologies provide business application services for pipe gallery monitoring. The JC1000 software platform covers the entire field of industrial informatization, and achieves efficient integration, cascading, and expansion between systems through the characteristics of distributed real-time databases. It can provide users with a fast/efficient platform product to meet the needs of various industrial informatization enterprises.

　　1.3 Design Ideas

The system design process follows relevant industry standards and specifications, and conforms to the principles of convenience and reliability, progressiveness and practicality, information sharing and interconnection, and overall consideration and coordination. The pipe gallery monitoring system has formed a long-term planning and design based on actual needs, gradually implemented construction, deeply integrated application, and achieved a sustainable construction route for the pipe gallery system. It has pointed out the direction for ensuring the development and application of pipe gallery monitoring.

　　1.4 Integrated Pipe Gallery Monitoring Subsystem

GIS/CityIntegrated pipe gallery monitoring systemIncluding fire protection system, ventilation system, power supply system, lighting system, drainage system, identification system, monitoring and alarm system.Integrated pipe gallery monitoring systemFor integrated management systems, they can be divided into communication systems, integrated monitoring systems, environmental monitoring systems, fire detection and alarm systems, video surveillance systems, IP systems, intrusion detection systems, and monitoring center computer systems. The communication system realizes the communication transmission between various systems inside the pipe gallery and the monitoring center system. Industrial grade switches and optical terminal equipment are installed in each fire compartment monitoring chassis, and multiple fire compartments form a fiber optic self-healing ring network. The comprehensive monitoring of equipment is based on PLC programmable logic controller, which monitors and controls the status of ventilation equipment, drainage pumps, electrical equipment, etc. in the pipe gallery. It is connected to equipment such as fans, smoke and fire dampers, internal lighting in the pipe gallery, float switches, water pump equipment, fire doors, hydraulic manhole covers, etc. It can be controlled locally automatically, manually, and remotely.

The environmental monitoring system realizes full monitoring of environmental parameters and status throughout the comprehensive pipe gallery, including gas monitoring on page 5 and temperature and humidity monitoring. Gas monitoring includes harmful gas monitoring (H2S, CO, CH4), oxygen content monitoring, and toxic and harmful gas monitoring. Monitor the co built cabin and gas cabin separately. Gas, temperature and humidity detectors are connected to the PLC equipment acquisition module in this zone. When the harmful gas content exceeds the standard or the oxygen content is too low, the system will sound and light an alarm to remind the monitoring center staff to take relevant measures.

The fire detection adopts distributed fiber optic temperature measurement technology to monitor the temperature of the power cable tray and pipe gallery environment inside the integrated pipe gallery, and to monitor the temperature of the pipe gallery environment inside the gas cabin online. The fiber optic temperature measurement host is connected to the industrial grade switch in the monitoring chassis through RJ45 interface and flame-retardant Ethernet cable, and is connected to the fire workstation and fire alarm control host in the monitoring center. When temperature anomalies or fires occur, the fiber optic temperature measurement host will output real-time temperature, fire location, and fire alarm signals to the information monitoring and management platform and fire alarm system, and the fire alarm system will complete the corresponding fire linkage. The fire alarm system can receive fire detection signals or alarm signals from manual fire alarm buttons, and conduct sound and light alarms inside the comprehensive pipe gallery and monitoring center. The system also conducts sound and light alarms in the monitoring center to alert staff. Support automatic/manual control, enable the start and stop of relevant alarm and fire-fighting equipment through operation buttons, and perform fire-fighting linkage through the monitoring platform, such as starting fans for smoke exhaust, starting gas fire extinguishing devices, etc.

The video surveillance system realizes real-time video monitoring, video recording query and other management application functions. The monitoring range covers all important nodes in the pipe gallery, including personnel entrances and exits, feeding ports, ventilation openings, and exit sections. The camera adopts infrared monitoring technology, which can clearly display the on-site image in the absence of light. The monitoring center system uses centralized storage devices for high-definition video storage.

The IP system enables voice communication between the monitoring center and the site. IP system workstations, sound and light alarms, and IP network paging microphones are set up in the monitoring center. IP terminals are installed in each fire zone. The IP system workstation is connected to the alarm control box and sound and light alarm, and responds to front-end alarm signals. It is also responsible for managing the IP system and providing software operations. The intrusion detection system implements personnel intrusion detection and alarm functions in important locations. Intrusion alarm hosts are installed in the control room of the monitoring center, and infrared intrusion detectors are installed in important locations such as personnel entrances and exits, feeding ports, and mechanical/natural ventilation openings. When personnel intrusion occurs, the infrared radiation level received by the equipment changes, generating an alarm state and uploading it to drive the alarm response.