美国铁路准备大量地采用技术诊断设备来防止由于机车车辆走行部损坏而造成的翻车事故。他们将主要的注意力集中在轴箱发热传感器上。造成严重后果的绝大部分翻车事故,均是由于机车车辆限界尺寸不符合要求造成的。所以已开始广泛使用机车车辆限界检查装置,这种装置采用了激光传感器,它可以检查列车的极限横截面。有些检查仪如脱轨传感器、自行脱钩传感器、列车防火系统、踏面缺陷的振动声学传感器等的研究工作已结束,目前正开始试验性的检验。设计上述检查仪时保证它有 U.S. railroads are prepared to use a large amount of technical diagnostic equipment to prevent rollovers resulting from damage to the running gear of rolling stock. They focus their attention on the pedestal heat sensors. Most of the serious consequences of rollover accidents, are due to rolling stock limit size does not meet the requirements caused. Therefore, widespread use of rolling stock clearance checking devices has been introduced. This device uses a laser sensor which can check the limit cross section of the train. Some examiners such as derailment sensors, self-decoupling sensors, fire safety systems for trains, vibrational acoustic sensors for tread defects, etc. have been completed and experimental testing is currently under way. When designing the tester, make sure it has it