Automatic monitoring system for structural safety of dangerous buildings

Housing construction safety is the basic guarantee for people’s economic life and personal safety in production, business, residence, and study. In recent years, housing safety accidents have occurred frequently, resulting in casualties and great property losses. Therefore, in terms of protecting the personal safety and property safety of residents, housing construction safety management is particularly important. However, my country's current requirements for housing construction safety There are still many shortcomings and problems in management.

Nowadays, more and more houses in our country are too old. The houses built in the early stage may have defects in structural design. During the construction process, corners may also be cut due to insufficient supervision. In addition, the houses During use, they will also be affected by factors such as material aging, illegal reconstruction, geological activities, etc. A large number of houses have reached the end of their service life.

At present, most of the traditional manual regular observation and measurement methods are used to assess the safety of houses in our country. In the process of continuous innovation in detection technology and means, especially when combined with electronic information and Internet of Things technology, the efficiency of safety management and monitoring of housing buildings has also been significantly improved. By combining the needs of dilapidated building monitoring, the structural health automated monitoring system is designed to realize long-term online monitoring of uneven settlement of house foundations, damage to house infrastructure, structural deformation and other phenomena, and to grasp the deformation and damage of important structures of old houses in real time. Changing trends.

The significance of deploying automated safety monitoring of house (building) structures is mainly reflected in:

1. Once the house building structure deforms, the deformation amplitude is very small, and manual detection methods are simply difficult to detect. It was found that the automated monitoring system is used to conduct safety appraisals of the house to ensure timeliness and accuracy, identify the main structural deformations and dangerous points currently existing in the house, and use scientific means to analyze and evaluate the causes of damage to the house to avoid the occurrence of house safety accidents.

2. Establish an automated monitoring system to understand the structural changes of dilapidated buildings in the jurisdiction area in real time, carry out appropriate repairs and reinforcements for structural defects discovered during the monitoring process, and send an early warning when the deformation exceeds the set threshold to avoid Further deterioration of structural safety.

3. The automated house monitoring and early warning system realizes the network informatization of house safety management and establishes an automated house safety monitoring platform, which helps prevent the occurrence of safety accidents such as the collapse of dangerous buildings.

System advantages:

At present, the common operation methods for dangerous house safety inspection are mostly to evaluate and observe the safety status of the house structure through manual visual inspection or the information obtained by measuring with the help of portable instruments. , however, with the development of the entire industry, the accuracy of manual detection cannot be guaranteed, and the limitations of heavy workload and long measurement cycle have become increasingly prominent. Therefore, we have integrated sensors, wireless transmission, cloud computing, Internet of Things, artificial intelligence and other technologies to develop an automated structural safety monitoring system to truly realize unattended automated online monitoring, which not only saves time and effort, but also provides accurate and real-time monitoring Sex is greatly improved.

System composition:

The automatic monitoring system for house structure safety is an online monitoring system that implements all-day monitoring of data indicators that affect the safety of house structures such as settlement, tilt, and cracks. It adopts hierarchical The design method can be divided into perception layer, collection layer, cloud layer and interaction layer. Various sensor devices are installed in key parts of the house for real-time monitoring. The data is connected to the collection device. After preliminary calculation, the collection device outputs the data to the cloud server through the wireless network. The cloud server analyzes and processes the data and sends it to the back end. Monitoring platform realizes data collaboration, timely warning, and problem-controllable information automated monitoring and warning system.

Monitoring sensors:

Install various sensors (including inclination sensors, crack meters, static levels, etc.) at key locations such as corners, walls, roofs, and foundations of houses. The measurement and control cloud platform performs remote monitoring data and real-time monitoring of houses.

Collection layer:

The collection layer uses an intelligent collection gateway, which integrates data collection module, edge computing module, power supply module and data transmission module.

It can collect data from various sensors, perform preliminary calculations on the data, and then output the data to the cloud server through wireless or wired networks.

Cloud layer:

The cloud integrates the Internet of Things and cloud computing technology. Various sensor data are calculated and analyzed and then stored in categories, and the processed data are sent to various human-computer interaction interfaces.

Interactive layer:

The measurement and control cloud platform is mainly composed of cloud servers and software systems. Through statistical analysis of various sensor data in the house, the development rules and changes of various characteristic parameters are obtained Trends are sent to the terminal and displayed on the user side in the form of data and charts, realizing functions such as archiving, querying, storage and management of data from various measurement points in the house.

The main functions of the measurement and control cloud platform:

The measurement and control cloud platform uses big data technology and combines automated monitoring and linkage control methods to build a It has established a dynamic and hierarchical early warning mechanism for the safety of housing structures, and established an information management system from housing monitoring, assessment, identification to remediation and crisis relief. It has realized early warning management and efficient management and control of the safety status of existing buildings in the city, and improved housing safety management. The scientific, informatization and automation level, its specific functions are as follows:

Real-time monitoring: The collection frequency can be set according to different needs, and the high-frequency collection of 1 time/second ensures 7*24 hours of uninterrupted online automation Monitoring; no need for personnel to enter the construction site multiple times.

Wireless transmission: The system can realize wireless transmission without the need to lay cables and optical cables over long distances;

Analysis and statistics: After the cloud receives the front-end monitoring data, it can automatically perform real-time monitoring of the monitoring data. Data analysis, processing, deformation curve drawing, preliminary prediction of monitoring results, and report generation.

Instant early warning: The platform monitors data analysis results through sensors, and performs hierarchical early warning functions based on pre-set early warning values. Early warning information can be provided to the person in charge through the platform, SMS, on-site sound and light early warning devices, etc. Be informed of any abnormality on site in a timely manner.

Remote query: According to on-site requirements, remote wireless transmission to the server is supported, and on-site data can be queried at any time on the web and mobile terminals.

Project management: Establish or manage corresponding engineering projects according to needs, while setting parameters of structures, on-site collection terminals and sensors; monitoring configuration of structures; equipment management, etc.

Data compatibility: The measurement and control cloud platform can be connected to third-party information platforms to achieve data sharing.