Log In | Enterprise CRM | Corporate Email
Application Cases of Underground Integrated Utility Tunnel Environment and Equipment Monitoring Systems
Release date:
2020-05-18
The power cable tunnel monitoring and alarm system is a highly integrated control system. Due to differences in their technical frameworks and the varying standards they adopt, these systems often struggle to achieve seamless interoperability. This challenge not only requires balancing diverse needs such as environmental and equipment monitoring, communication coordination, and information management, but also demands robust support for image-based surveillance crucial for disaster early warning and safety protection. Additionally, the system must seamlessly integrate with complementary components like alarm systems and access control, while also enabling effective coordination with broadcast systems. As a result, during the process of interconnecting these systems, the inevitable emergence of information silos stemming from system heterogeneity becomes a significant hurdle.
To break the siloed information landscape, a sophisticated, heterogeneous monitoring and alerting system must address compatibility issues among products from different vendors, as well as the seamless integration of multiple systems. It also needs to account for platform-level network access and resource allocation strategies, while being designed with the perspective of large-scale, networked users in mind—ensuring that the principles of mutual benefit and shared value are carefully balanced.
Aotuo Technology's "Integrated Platform for Urban Power Tunnel Monitoring and Alarm Systems" successfully addresses the challenges of multi-brand compatibility, seamless system integration and convergence, and inconsistent protocol and interface standards—thanks to its innovative integrated control technology. This platform is poised to become the future direction for the development of power tunnel monitoring systems.
Project Configuration and Instructions
The Sibu Island Power Cable Tunnel is located in Dongtou District, Wenzhou City. It spans a total length of 400 meters and is divided into three fire-resistant compartments. The appearance of the tunnel is shown in the figure below.
The Su Bu Island Power Cable Tunnel System consists of three main components: the management layer, the control layer, and the equipment layer. The management layer serves as the core of the entire monitoring system, responsible for linking, coordinating, controlling, and managing the operations of each subsystem, as well as overseeing data transmission and communication. Specifically, the PLC handles the collection of detection signals from within the tunnel, performs logical computations and analyses, and then uses these signals to execute both automatic and manual controls over the tunnel's equipment. Meanwhile, the equipment layer includes on-site devices such as lighting systems, ventilation fans, water pumps, video surveillance units, oxygen sensors, hydrogen sulfide sensors, methane sensors, temperature and humidity sensors, and infrared detectors. The system’s block diagram is illustrated in Figure 1 below.
PLC Control System >>>
The Regional Control Unit employs the NA300 series PLC, integrating signal acquisition, local control, data exchange, and remote networking into a single system. It enables the real-time collection of temperature, humidity, carbon monoxide, methane, and hydrogen sulfide concentrations within the utility tunnel, as well as the immediate control and monitoring of on-site equipment such as water pumps, fans, lighting, and hydraulic manhole covers. Furthermore, through an环网 (ring network) switch, critical data is accurately and promptly transmitted to the unified information management platform at the monitoring center. In the control room of the monitoring center, this data—displaying gas levels (O2, CH4, H2S), temperature, humidity, water level, and the operational status of field equipment—in digital format—is shown for each fire compartment. This setup allows on-duty personnel to swiftly identify any environmental or equipment-related issues, promptly address malfunctions, and efficiently manage emergency alerts, ensuring the seamless operation of the utility tunnel.
Each fire compartment control unit primarily includes the following components:
Host Computer Monitoring System >>>
The host computer uses NAControl configuration software and consists of two engineer stations. Users can monitor sensors and electrical equipment in real time through the monitoring system, enabling online surveillance. Additionally, users can directly perform relevant operations within the graphical interface of the host computer, seamlessly meeting the associated control requirements.
Control Function
Operating Condition Monitoring >>>
It can achieve the collection of temperature, humidity, carbon monoxide, methane, and hydrogen sulfide concentrations within the tunnel corridor, as well as real-time online monitoring of the operational status of on-site pumps, fans, lighting, and hydraulic manhole covers.
It can achieve the collection of temperature, humidity, carbon monoxide, methane, and hydrogen sulfide concentrations within the tunnel corridor, as well as real-time online monitoring of the operational status of on-site pumps, fans, lighting, and hydraulic manhole covers.
Integrated Control >>>
Under automatic conditions, the water pump is automatically linked and controlled in coordination with the liquid-level sensor, initiating or stopping the pump motor according to the programmed sequence. In local operation mode, the pump’s on/off status can be manually adjusted based on real-time site conditions. Similarly, under automatic conditions, the fan is automatically linked and controlled with the gas sensor, activating or deactivating the fan as per the sensor readings and the predefined program. In local mode, the fan can be manually started or stopped according to on-site requirements. Additionally, emergency lighting, general lighting, and hydraulic well covers—all of which can be remotely controlled for start/stop operations.
Through the automated centralized control system, it is not only possible to monitor the sub-control systems from the central control room, but also to use software for system monitoring, debugging, and programming. This has significantly reduced equipment maintenance and repair workload, easing the burden on operational staff. Since the system was put into operation, equipment has been running smoothly, with no failures reported across the entire system. Moreover, the system has delivered excellent performance and has received unanimous praise from operators. Overall, the program control system has greatly enhanced both the operational efficiency and control capabilities of the equipment. All operational steps of the system can now be seamlessly executed via automatic control from the main control room, while real-time status updates, sensor readings, and other key parameters are conveniently displayed on the primary control interface. Additionally, the system’s printer effortlessly generates fault alarms and provides easy access to real-time as well as historical data records for review.
Keywords:
Related Products
2020-04-08
2020-04-08
2020-04-08
2020-04-07
Service hotline:+8618905163737
Company Headquarters: No. 15, Building B, Zone B, Phase I, Headquarters Economic Park, 69 Fengzhan Road, Yuhuatai District, Nanjing, Jiangsu, P.R. China
Production Center: No. 219 Qinghuiting West Road, Jiangning Economic Development Zone, Nanjing City, Jiangsu Province
Aoto Technology Co., Ltd.
