Prabatama Nicky Andre, Nguyen Mai Lan, Hornych Pierre, Mariani Stefano, Laheurte Jean-Marc
Univ Gustave Eiffel, CNRS, ESYCOM, F-77454 Marne-la-Vallée, France.
Univ Gustave Eiffel, MAST-LAMES, F-44344 Bouguenais, France.
Sensors (Basel). 2024 Oct 9;24(19):6487. doi: 10.3390/s24196487.
In this paper, we propose a wireless sensor network for pavement health monitoring exploiting the Zigbee technology. Accelerometers are adopted to measure local accelerations linked to pavement vibrations, which are then converted into displacements by a signal processing algorithm. Each device consists of an on-board unit buried in the roadway and a roadside unit. The on-board unit comprises a microcontroller, an accelerometer and a Zigbee module that transfers acceleration data wirelessly to the roadside unit. The roadside unit consists of a Raspberry Pi, a Zigbee module and a USB Zigbee adapter. Laboratory tests were conducted using a vibration table and with three different accelerometers, to assess the system capability. A typical displacement signal from a five-axle truck was applied to the vibration table with two different displacement peaks, allowing for two different vehicle speeds. The prototyped system was then encapsulated in PVC packaging, deployed and tested in a real-life road situation with a fatigue carousel featuring rotating truck axles. The laboratory and on-road measurements show that displacements can be estimated with an accuracy equivalent to that of a reference sensor.
在本文中,我们提出了一种利用Zigbee技术进行路面健康监测的无线传感器网络。采用加速度计来测量与路面振动相关的局部加速度,然后通过信号处理算法将其转换为位移。每个设备由埋设在道路中的车载单元和路边单元组成。车载单元包括一个微控制器、一个加速度计和一个将加速度数据无线传输到路边单元的Zigbee模块。路边单元由一个树莓派、一个Zigbee模块和一个USB Zigbee适配器组成。使用振动台和三种不同的加速度计进行了实验室测试,以评估系统性能。将来自五轴卡车的典型位移信号以两个不同的位移峰值应用于振动台,从而模拟两种不同的车速。然后将原型系统封装在PVC包装中,部署并在具有旋转卡车车轴的疲劳转盘的实际道路情况下进行测试。实验室和道路测量表明,可以以与参考传感器相当的精度估计位移。