Differential RTK Technology Enables GNSS Systems to Achieve Millimeter-Level Precision Monitoring of Engineering Deformation

GNSS monitoring equipment equipped with differential RTK technology can achieve millimeter-level displacement monitoring in engineering projects. It is suitable for monitoring scenarios such as dams, bridges, and landslides. The equipment boasts high accuracy and stability, supports real-time data transmission and remote control, is compatible with multiple monitoring systems, and is adaptable to complex working conditions.

This millimeter-level displacement monitoring equipment, built using GNSS systems combined with differential RTK technology, is a core device in the current field of engineering safety monitoring. It is widely applicable to various engineering scenarios such as dam safety monitoring, bridge health monitoring, and landslide early warning, effectively overcoming the shortcomings of traditional monitoring methods, such as insufficient accuracy, data lag, and operational limitations. The core of this equipment relies on a real-time dynamic differential algorithm, using data linkage correction between the base station and monitoring station to offset monitoring errors caused by satellite orbit, ionospheric, and environmental interference, ensuring the accuracy and stability of monitoring data.

The equipment possesses standardized high-precision monitoring capabilities. In differential mode, the horizontal monitoring accuracy can reach ±(2.5mm+1ppm), and the vertical monitoring accuracy can reach ±(5mm+1ppm), enabling precise capture of minute displacement deformations in engineering structures. The hardware configuration employs a choke coil antenna paired with magnetic absorbing materials to effectively reduce signal interference caused by multipath effects, further enhancing monitoring stability in complex environments. The device boasts low power consumption and strong adaptability, supporting DC 10V-15V power supply and capable of continuous and stable operation in environments ranging from -40°C to +85°C with no condensation and high humidity, making it suitable for various complex monitoring scenarios such as fieldwork, mountainous areas, and river valleys.

The device features a lightweight structural design and compact overall size, facilitating convenient installation and deployment without complex debugging procedures, significantly reducing on-site construction costs and operational difficulty. Equipped with the standard Modbus-RTU communication protocol and supporting RTCM3 differential data transmission, the device can perform offline displacement calculations, accurately outputting horizontal and vertical displacement data. It also features real-time data transmission, remote monitoring, and data analysis capabilities, allowing personnel to remotely monitor the real-time status of monitoring points.

Its excellent compatibility and data processing capabilities allow the device to be seamlessly integrated into various engineering monitoring systems, enabling multi-device and multi-dimensional data sharing and fusion, building a comprehensive engineering safety monitoring system, and continuously providing efficient, accurate, and stable monitoring support for infrastructure projects, geological disaster prevention and control, and other fields, thus helping to normalize engineering safety management.