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Application of sensors in monitoring the settlement of railway track subgrades
To ensure the high-speed and healthy development of railways, a remote automatic monitoring system for subgrade settlement based on laser measurement, advanced sensing, and wireless network technologies has been developed. This monitoring system includes four subsystems: surface settlement laser automatic measurement, simultaneous automatic measurement of subgrade layered settlement and lateral displacement, automatic measurement of subgrade lateral profile settlement, and data collection and wireless transmission. The surface settlement automatic measurement is achieved using laser measurement and automatic calibration technology; the simultaneous automatic measurement of subgrade layered settlement and lateral displacement is achieved using Hall sensors, laser ranging, and tilt sensors; the automatic measurement of subgrade lateral profile settlement is achieved using master and slave motors driving the tilt sensors. The monitoring system has been validated in the laboratory and engineered, and experiments have been conducted on-site at a certain high-speed railway station.
Tilt sensors can be effectively applied in this control system, enabling real-time monitoring of overall subgrade settlement, local settlement, and different layer settlements within the cross-section by measuring the angle of inclination. The signals output by the tilt sensors are transmitted to a computer via wireless transmission or various wired networks, and then processed, analyzed, and stored using computer software.
Inclination monitoring
X, Y axis, industrial design, small size, low power consumption
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X, Y, Z three axis, attitude calculation measurement algorithm
Imu inertial sensor
Three-axis angle, angular velocity, acceleration, magnetic field measurement
Attitude heading reference system
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