SPEPC TECHNOLOGY

Solution

Structural Safety Monitoring and Early Warning Solution for Buildings

Background Introduction

Building construction serves as a vital spatial framework for people’s daily lives and work, and its structural integrity directly impacts public safety, property protection, and social stability. In China’s hilly and mountainous regions, during the development of residential communities, schools, hospitals, and public buildings, retaining walls and steep slopes formed by site grading, along with critical structural elements such as foundations, load-bearing walls, beams, and columns, are subject over time to factors including foundation settlement, material aging, disturbances from adjacent construction activities, and rainfall‑induced seepage. These conditions can readily give rise to defects such as differential settlement, wall cracking, tilting, localized bulging, or even sliding. Initially, these issues progress slowly and are often difficult to detect; however, once instability occurs, they pose a serious threat to the safety of occupants and nearby residents.

Traditional manual inspection methods suffer from numerous blind spots, long inspection cycles, and delayed early warnings, making it difficult to achieve real-time monitoring of a building’s structural health. Therefore, establishing an economical, reliable, and intelligent structural safety monitoring and early‑warning system for buildings—capable of providing round‑the‑clock automated surveillance of both the main structure and its ancillary retaining elements, along with proactive risk alerts—is a critical public‑interest project for eliminating housing safety hazards and ensuring residents’ peace of mind and prosperity. It also constitutes an essential tool for refined urban management and resilience‑building.  

Solution Overview

 

 

This solution is a comprehensive IoT‑based system specifically designed for structural safety monitoring in buildings, including residential homes, public facilities, aging urban neighborhoods, schools, hospitals, and more. Adhering to the principles of cost‑effectiveness, real‑time performance, and accuracy, it deploys intelligent sensing devices and a cloud‑based management platform to enable automated, all‑round monitoring of critical parameters such as foundation settlement, wall inclination, crack progression, and structural vibration.

The system consists of two main components: front-end monitoring terminals and a back-end data management platform. By installing integrated inclinometers, crack meters, static leveling instruments, and other smart devices at critical load-bearing locations, existing cracks, retaining walls, and foundation areas, the system can collect real-time data on the structure’s orientation, deformation, and settlement. The data is transmitted via… 4G/NB-IoT Once the wireless network transmits data to the cloud‑based monitoring and early‑warning platform, the platform performs real-time data processing, trend analysis, and intelligent decision‑making. When the monitored data exceeds the preset safety threshold, the platform automatically generates an alert and notifies users via SMS, in‑platform pop‑ups, and mobile… APP Notifications and other methods are used to promptly inform property management, community administrators, or the persons responsible for housing safety, thereby enabling the early detection of potential structural risks and a swift response.

The construction of the automated monitoring and early-warning system adheres to the principles of cost-effectiveness, real-time performance, and accuracy. By installing automated monitoring equipment and deploying a software management platform, it enables comprehensive monitoring of the soil within the residential community.

FEATURES OF THE SOLUTION

24/7 Automated Condition Monitoring

24/7 Automated Condition Monitoring

The system provides 24/7 continuous automated monitoring of building tilt, vibration, crack propagation, and foundation settlement, fundamentally transforming the traditional reliance on periodic manual inspections and eliminating monitoring blind spots.
Intelligent Threshold Alerts and Multi-Channel Notifications

Intelligent Threshold Alerts and Multi-Channel Notifications

The platform supports customizable multi-level alert thresholds (e.g., blue, yellow, and red alerts). When monitoring data deviates from normal or exceeds set limits, the system immediately triggers a platform‑level alert and simultaneously sends an SMS notification to the responsible party’s mobile phone, ensuring that warning information is delivered promptly and accurately.
Wireless Networking and Remote Cloud Management

Wireless Networking and Remote Cloud Management

It employs wireless communication technologies such as 4G and NB‑IoT to build the network, eliminating the need for complex cabling and enabling easy installation, making it particularly well suited for renovation projects in older residential areas. It supports remote configuration of edge devices, online status monitoring, and firmware upgrades, significantly reducing the complexity and costs of long-term operations and maintenance.
Visualization Platform and Global Control

Visualization Platform and Global Control

The monitoring and early-warning platform integrates a GIS-based electronic map, enabling intuitive visualization of the locations of all monitored buildings, their real-time data, historical trends, and health status. Administrators can quickly obtain an overview of building safety across the entire area via PC or mobile devices, facilitating evidence-based decision-making and efficient management.
Extended Compatibility

Extended Compatibility

The system employs a modular design, enabling seamless integration with other devices such as environmental sensors (e.g., rainfall, temperature, and humidity) and video surveillance, thereby meeting the scalability requirements for comprehensive housing safety assessments.

 

System Architecture

The system employs a mature and robust three-tier IoT architecture, characterized by clear layering and reliable operation:

Perception Layer
It comprises an integrated array of intelligent sensing devices—such as inclinometers, crack meters, static leveling instruments, and vibration sensors—deployed on the building’s load-bearing walls, beams, columns, foundations, and surrounding retaining walls, responsible for acquiring real-time raw data on structural deformation, settlement, and vibration.

Network layer

By leveraging public or private wireless communication networks such as 4G, NB‑IoT, and LoRa, a low‑power, highly reliable uplink channel is established to securely and reliably transmit data from the perception layer to the cloud server.

Data Application Layer

The cloud-based monitoring and early-warning platform is responsible for data reception, storage, analysis, visualization, and the issuance of alerts. The platform offers real-time monitoring, historical data retrieval, trend analysis, alert‑rule configuration, device management, and system administration, while providing administrators with a user-friendly interface via both a web portal and a mobile app.

System platform

By deploying automated intelligent monitoring terminals, key structural data—including building tilt, crack patterns, and settlement—are collected in real time from the structures and their associated retaining walls.

The backend data management platform performs intelligent analysis of multi-source monitoring data, assesses trends, and predicts potential disasters, while automatically pushing tiered early-warning notifications to relevant personnel.

System Implementation 7×24 Hourly, round-the-clock, all‑round dynamic monitoring enables users to track the deformation and structural health of buildings anytime, anywhere, providing a scientific basis for early warning, preventive measures, and maintenance management of building and retaining wall defects.

RECOMMENDED CASES

RECOMMENDED PRODUCTS

Geodetic GNSS receiver

The geodetic GNSS receiver is a versatile deformation‑monitoring device that integrates a high‑precision GNSS module with MEMS sensors. It supports multi‑system, multi‑frequency signal reception, including BeiDou‑3, GPS, and GLONASS, and delivers millimeter‑level static monitoring as well as centimeter‑level dynamic monitoring. Equipped with an advanced intelligent fusion algorithm, the device combines satellite positioning data with inertial sensor information to enable continuous, reliable displacement monitoring in complex environments. It is widely applicable to geological hazard and engineering safety monitoring scenarios, such as landslides, subsidence, and mining‑area deformations.

Radar water level gauge

Radar water level gauges are developed based on millimeter-wave radar and designed for measuring water levels. By recording the time it takes for a pulse wave to travel and multiplying it by the speed of electromagnetic waves, the gauge measures the distance between the liquid surface and the radar antenna, thereby indicating changes in water level. This device is a compact, all‑weather, 24/7 sensor that offers high integration, a small footprint, and easy installation.

Integrated Soil Moisture Monitor

The integrated soil moisture monitor is a multi-layer soil moisture sensing device based on the frequency-domain reflectometry (FDR) principle, capable of simultaneously measuring volumetric water content at three distinct depths within the same soil profile. The device integrates high‑sensitivity sensors, a low‑power processor, and a wireless communication module, supporting remote configuration and real-time data transmission. It features robust temperature compensation and excellent soil adaptability, making it well suited for long-term soil moisture monitoring in applications such as precision agriculture, landslide early warning, and ecohydrology.

Rainfall monitor

The rainfall monitor is a fully automatic rain‑gauge device featuring a dual‑bucket mechanical design, offering 0.2 mm resolution and ±2% measurement accuracy, and capable of stable operation under extreme temperature and vibration conditions. The instrument integrates rainfall sensing, data storage, and wireless transmission functions, supporting real-time calculation of rainfall intensity and cumulative rainfall totals. It is widely used in meteorology, hydrology, geological hazard monitoring, and urban flood‑control surveillance.

Integrated Tilt (Collapse) Monitor

The integrated tilt (collapse) monitoring device is an intelligent monitoring system that combines high‑precision sensing, wireless transmission, and a robust protection rating. It employs triaxial MEMS tilt and vibration‑acceleration sensors to continuously acquire real‑time data on structural tilt angles and acceleration, which are then transmitted via 4G, LoRa, or other methods to a cloud platform. This device is ideally suited for long‑term safety monitoring of slopes, bridges, transmission towers, and similar structures. Featuring low power consumption, extended battery life, and strong anti‑interference capabilities, it provides reliable data to support structural health assessments and disaster early warning.

Integrated Crack Monitor

The Integrated Crack Monitor is an intelligent monitoring terminal that leverages cable‑pull displacement sensing and multi‑parameter fusion technology, specifically designed for monitoring surface deformations such as slope cracks and retaining wall fissures. The device incorporates a high‑precision displacement sensor and a triaxial accelerometer/tilt sensor, enabling real-time monitoring of crack width changes, wall vibrations, and tilt angles, while supporting remote data transmission and alarm notifications via LoRa or 4G networks. With a robust structure and straightforward installation, it is well suited for long‑term automated monitoring in harsh outdoor environments.

Debris Flow Line-Disconnection Monitor

The debris‑flow line‑break monitoring device is an intelligent monitoring and early‑warning system specifically designed for geological hazard prevention in mountainous valleys during flood season. It focuses on real-time sensing and timely reporting of sudden geological hazards such as debris flows and flash floods caused by torrential runoff. The device integrates high‑precision cable‑strain sensors, data acquisition, and wireless transmission modules, featuring a highly compact and modular design that adapts to complex field conditions. Typically deployed at both ends of debris‑flow‑prone gullies, it employs a physics‑based triggering mechanism to accurately detect the impact and destructive signals generated by debris flows and floodwaters carrying sediment and rocks. This enables second‑level hazard detection, instant data upload, and remote alarm notification, buying valuable time for preemptive evacuation and emergency response.

Array-type displacement sensor

The array-type displacement meter is a flexible, series‑connected three‑dimensional inclinometer array composed of multiple measurement units. It is ideally suited for monitoring three‑dimensional spatial deformations, such as deep‑buried displacements, tunnel convergence, and excavation pit deformation. The device employs high‑precision MEMS sensors and a flexible circuit design, enabling it to bend freely with structural deformation while providing real‑time outputs of displacement, tilt angle, and vibration data. It also features trigger‑based data acquisition and a low‑power sleep mode, making it well suited for long‑term, concealed‑installation monitoring and automated safety‑alert systems.
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