论文部分内容阅读
目前,在29个国家的85条铁路上,已有约3000套红外线热轴探测器投入运用。在美国,自从第一套红外热轴探测器在弗吉尼亚州的诺基投入运用以来,25年中,这种装置检测出的热轴故障累计将近50万个。随着从电子管经过晶体管到集成电路的发展,红外热轴探测器的成本和维修费用降低了,可靠性提高了,但是,直接由输出信号(通常是同一车轴左右轴承问的温度差)判定热轴的原则却没有改变。微处理机的出现带来了实现较大改进的机会。在Servo公司推出的Servotrim系统中,不是用峰值信号触发警报,而是将全列车的信号储存起来,待列车通过后进行综合分析。这一分析在1秒钟之内即可完成。就全列车的红外信号进行比较而不是仅对一根车轴进行比较有不少优点。这不仅有可能
At present, about 3000 infrared hot axis detectors have been put into operation on 85 railways in 29 countries. In the United States, since the first infrared thermal axis detector was put into operation in Nokia, Virginia, nearly half a million thermal spindles have been detected by this device in 25 years. As transistors and integrated circuits have evolved from tubes to tubes, the cost and maintenance costs of infrared hot-rod detectors have been reduced and reliability has increased, however, the heat is determined directly by the output signal (usually the temperature difference between the right and left bearings on the same axle) The principle of the axis has not changed. The advent of microprocessors offers the opportunity to make major improvements. Instead of triggering an alarm with a peak signal, Servo’s Servotrim system stores the entire train’s signal for comprehensive analysis after the train passes. This analysis can be completed in less than one second. There are many advantages to comparing full train IR signals rather than just comparing one axle. This is not only possible