中文摘要：

针对道路载荷谱采集系统多采用加速度传感器等间接测量方式导致测量误差较大等问题,通过自主研发的车轮力传感器对道路载荷谱进行直接测量,并依此构建了采集系统.设计了单向并行总线实现了高速数据传输,设计了双向串行总线实现了个模块间控制信息的传输.系统硬件上采用CAN总线和基于cPCI的传感器-集成数据采集系统-上位机的构架方案,对WFT中的车轮力传输模块采用无线传输方式;软件上对采集的原始载荷谱采用AR建模结合Kalman滤波的方法进行去噪处理.实车试验分别采集了水泥和沥青路面数据,试验结果表明：采用滤波算法后,既保留了路面起伏的原貌,又去除了细小的波动,较准确地得到了路谱数据,系统是稳定可靠的.

英文摘要：

Indirect acquisition method of using acceleration sensor was normally used to acquire road loa-ding spectra data,leading to large detection error.According to the direct acquisition method of wheel force transducer（WFT）,an acquisition system was proposed.Unidirectional concurrent bus was designed to transmit high-speed data,and bidirectional serial bus was designed to transmit data.CAN bus and scheme based on cPCI of sensor,integrated data acquisition part and upper machine schedule were adopted in hardware system.Wireless data transmission was used in wheel force transmission module of WFT.In software system,AR model which integrated with Kalman filter was adopted for denoising of primitive loading spectra.On-car experiment was conducted on concrete and pitch roads to acquire loading spectra data.The results show that the real road surface wave can be retained after filtering,and the small-disturbance can also be denoised.The proposed acquisition method of road loading spectra data is reliable.