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首页> 美国卫生研究院文献>Sensors (Basel Switzerland) >Development of a High Precision Displacement Measurement System by Fusing a Low Cost RTK-GPS Sensor and a Force Feedback Accelerometer for Infrastructure Monitoring
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Development of a High Precision Displacement Measurement System by Fusing a Low Cost RTK-GPS Sensor and a Force Feedback Accelerometer for Infrastructure Monitoring

机译：通过融合低成本RTK-GPS传感器和力反馈加速度计开发高精度位移测量系统以进行基础设施监控

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摘要

A displacement measurement system fusing a low cost real-time kinematic global positioning system (RTK-GPS) receiver and a force feedback accelerometer is proposed for infrastructure monitoring. The proposed system is composed of a sensor module, a base module and a computation module. The sensor module consists of a RTK-GPS rover and a force feedback accelerometer, and is installed on a target structure like conventional RTK-GPS sensors. The base module is placed on a rigid ground away from the target structure similar to conventional RTK-GPS bases, and transmits observation messages to the sensor module. Then, the initial acceleration, velocity and displacement responses measured by the sensor module are transmitted to the computation module located at a central monitoring facility. Finally, high precision and high sampling rate displacement, velocity, and acceleration are estimated by fusing the acceleration from the accelerometer, the velocity from the GPS rover, and the displacement from RTK-GPS. Note that the proposed displacement measurement system can measure 3-axis acceleration, velocity as well as displacement in real time. In terms of displacement, the proposed measurement system can estimate dynamic and pseudo-static displacement with a root-mean-square error of 2 mm and a sampling rate of up to 100 Hz. The performance of the proposed system is validated under sinusoidal, random and steady-state vibrations. Field tests were performed on the Yeongjong Grand Bridge and Yi Sun-sin Bridge in Korea, and the Xihoumen Bridge in China to compare the performance of the proposed system with a commercial RTK-GPS sensor and other data fusion techniques.
机译：提出了一种融合了低成本实时运动学全球定位系统（RTK-GPS）接收器和力反馈加速度计的位移测量系统，用于基础设施监控。所提出的系统由传感器模块，基本模块和计算模块组成。传感器模块由RTK-GPS流动站和力反馈加速度计组成，并像常规RTK-GPS传感器一样安装在目标结构上。与传统的RTK-GPS基座类似，该基座模块被放置在远离目标结构的刚性地面上，并将观测消息传输到传感器模块。然后，将由传感器模块测量的初始加速度，速度和位移响应传输到位于中央监控设施的计算模块。最后，通过融合来自加速度计的加速度，来自GPS流动站的速度和来自RTK-GPS的位移，可以估算出高精度和高采样率的位移，速度和加速度。请注意，建议的位移测量系统可以实时测量3轴加速度，速度和位移。就位移而言，所提出的测量系统可以估计动态和伪静态位移，均方根误差为2 mm，采样率最高为100 Hz。该系统的性能在正弦，随机和稳态振动条件下得到了验证。在韩国的永宗大桥和益新仙大桥以及中国的西后门大桥上进行了现场测试，以比较该系统与商用RTK-GPS传感器和其他数据融合技术的性能。

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