Structural health monitoring throughout a bridge's entire lifecycle is crucial for accident prevention and ensuring traffic safety. Our "BridgeGuard" BD-100 Series bridge-specific inclinometer is an industrial-grade sensor based on high-precision MEMS technology. It can continuously and accurately monitor minute tilt changes in critical parts of a bridge, such as piers, box girders, and pylons, providing vital attitude data for the long-term health assessment of the structure. It is an indispensable and reliable cornerstone for building your intelligent bridge monitoring system.
Long-Term Stability & Micro-Change Detection
Optimized specifically for monitoring long-term, slow settlement and tilt deformation, it features exceptional long-term stability, capable of detecting minute angular displacements with very low annual rates of change.
With a high measurement accuracy of ±0.003°, it can sensitively perceive early-stage anomalies, providing valuable time for early warnings.
Built for Harsh Outdoor Environments
Ultra-Wide Operating Temperature Range: Suitable for all-weather outdoor operation, from intense heat to severe cold (-40°C ~ +85°C).
Superior Protection Rating: Housing utilizes corrosion-resistant materials with an IP68 protection rating, ensuring long-term stable operation in harsh environments like heavy rain, humidity, and salt spray.
Excellent Anti-Vibration Performance: Specially designed internal structure effectively filters out continuous high-frequency vibrations caused by passing vehicles, ensuring data reflects true structural deformation rather than transient interference.
Low Power Consumption & Remote Powering Capability
Features an ultra-low power mode designed for field or off-grid scenarios, easily adaptable to solar power systems.
Supports wide voltage input, compatible with various industrial monitoring system power configurations.
Flexible Communication & Integration Options
Primary Output: RS485/CAN Bus: Supports standard industrial protocols like Modbus, facilitating long-distance wiring and networking, and easy integration into existing data acquisition systems.
Optional 4G/NB-IoT Wireless Transmission: Versions with built-in wireless modules can directly upload data to the cloud platform, enabling remote, real-time online monitoring.
Resolution : The smallest change in the measured value that the sensor can detect and distinguish within the measurement range.
Accuracy: The root mean square error between the actual angle and the angle measured by the sensor for multiple times(≥16 times).
Pier & Foundation Settlement Monitoring: Installed on pier pile caps or piers to monitor tilting caused by uneven settlement.
Main Girder & Box Girder Deflection/Torsion Monitoring: Installed at critical cross-sections of the main girders to monitor deflection and torsion under load.
Pylon (Tower) Attitude Monitoring: For cable-stayed bridges and suspension bridges, continuously monitors the posture changes of pylons under cable force and wind load.
Bearing Displacement & Rotation Monitoring: Indirectly monitors whether the bearings are functioning normally.
Adjacent Structure Impact Monitoring: Monitors potential impacts on the bridge structure during nearby construction activities like tunnel excavation.
System Value: From Data to Decision-Making
By deploying the BD-100 Series sensors, you can:
Establish a Baseline: Obtain initial attitude data of the bridge in its healthy state.
Real-Time Early Warning: The system automatically alarms when the tilt exceeds a preset threshold, prompting manual inspection.
Trend Analysis: Analyze long-term deformation trends of the bridge through accumulated data, providing a scientific basis for maintenance and repair.
Validate Design: Verify the consistency between the bridge design model and its actual behavior.
The correct installation method can avoid measurement errors. When installing the sensor, please do the following:
First of all, make sure that the sensor mounting surface is completely close to the measured surface, and the measured surface should be as level as possible. There should be no included angles as shown in Figure A and Figure C. The correct installation method is shown in Figure Band Figure D.
Secondly,the bottom line of the sensor and the axis of the measured object cannot have an angle as shown in Figure E, and the bottom line of the sensor should be kept parallel or orthogonal to the axis of rotation of the measured object during installation. This product can be installed horizontally or vertically (vertical installation needs to be customized), and the correct installation method is shown in Figure F
Finally, the mounting surface of the sensor and the surface to be measured must be tightly fixed, smooth in contact, and stable in rotation, and measurement errors due to acceleration and vibration must be avoided.
Every bridge is a critical social asset and transportation link. Choosing the Bridge Guard BD-100 Series means adding a reliable "digital guardrail" to bridge safety. Let us use precise data to safeguard the safety behind every crossing.
Contact us for the Detailed Technical Proposal & Bridge Monitoring System Integration Guide!
The Acceleration Sensor for Bridge is a high-performance three-axis capacitive accelerometer engineered specifically for structural health monitoring of bridges and other critical infrastructure. Designed to capture precise vibration and dynamic load data under real-world conditions, this sensor delivers reliable, continuous monitoring of bridge behavior — from traffic-induced oscillations to environmental excitations such as wind and seismic events. With a robust housing, wide frequency response, and excellent temperature stability, it serves as a foundational component in modern bridge safety and maintenance systems.
Westcoast New Area, Qingdao City ,Shandong Province ,China
