采用多超声波传感器对履带车辆前方路面信息进行探测，特别是履带前方近距离的凸堆和凹坑，确定它们的距离、方位和高度等信息。并对超声波传感器的设置、系统硬件实现和软件流程设计进行了探讨；最后就精确感知路面信息提出了进一步的改进方案。关键词:超声波传感器； 路面信息；主动悬挂系统Abstract: Ultrasonic sensors are used to detect front road surface's information , especially toobtain raised clods and low pits' information about distance ,orientation and height, which are in near distance ahead of tracks. Moreover, the setting of ultrasonic sensors 、the achievement of system hardware and the design on the process of software of are discussed. Finally farther improvement is put forwarded to detect road surface's information accurately.Key words: ultrasonic sensors; information of road surface; active suspension systems