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最近,伺服公司正在发展行阵列(Linear array)技术。据称可以探测到整个轴箱。 近年来,国外热轴探测器没有突破性发展。各家公司的红外轴温探测器,滚动轴承的声学探测器以及车上检测系统差不多都是这样。 声学探测的发展了若干年,产品主要是Burlinston Northern、伺服和哈曼。现有6部声学探测器在BN地区使用,取得了良好的进展。探测兑现率达90％,即检测出的热滚动轴承,有90％是故障轴承。另外,还有6套分布在各地(太平洋地区2个,NS、Conrail、加拿大国铁、和英国国铁各1个)。声学探测器的改进和性能完善还要继续研究。但是,整个进程要取决于铁路的发展和政府的投资。
Recently, servo companies are developing line array technology. It is said that the entire axlebox can be detected. In recent years, there has been no breakthrough in foreign hot shaft detectors. Almost all companies infrared axis temperature detectors, acoustic detectors and rolling bearings on-board detection system is almost like this. Acoustic detection has been developing for several years and its products are mainly Burlinston Northern, Servo and Harman. The existing six acoustic detectors are used in the BN area and good progress has been made. Probing rate of 90%, that is detected hot rolling bearings, 90% of the fault bearing. There are also six other distribution locations (two in the Pacific, one in NS, one in Conrail, one in Canada and one in Britain). Acoustic detector improvements and performance improvements should continue to study. However, the whole process depends on the development of the railway and government investment.