Abstract: One main content of the roadway fatigue test is to let vehicles to roll over and over on the roadbed,and to count the roiling numbers as the important parameters for synthesis analysis．The ordinary method for roadway fatigue test is using manual counter or electronic counter controlled by mechanical switch．Ofter having investigated the disadvantages of above-mentioned methods，This paper introduced a non-contact counter with advanced principle and excellent performance．This method has been proved practically better．

Key words: non-contact, counter, roadway, fatigue test

摘要： 道路疲劳试验的内容之一。就是用车辆在被测路基上进行反复多次的碾压。并将碾压的次数，作为综合分析 被测路基的一个重要参数．道路疲劳试验常见的计数方法，多采用人工计数或用机械传动控制点动开关的电子计 数．本文在分析了上述两种计数方式存在的弊病后，提出了一种原理先进、性能优越的非接触式计数器，经实践证 明，效果良好．

关键词: 非接触, 计数器, 道路, 疲劳试验