日本铁路信号维修发展的演变过程表明了电务设备的维修管理有其自身发展的客观规律,设备的维修方式随设备的发展而变化,电务技术装备水平,自动监测装置及器材的可靠性等直接决定维修方式。电务维修工作的发展趋向是向“状态修”发展。日本在改进维修工作过程中,在设备技术上曾采取以下有效措施: The evolution of Japan’s railway signal maintenance and development shows that the maintenance and management of the electrical equipment has its own objective laws of development. The maintenance methods of the equipment vary with the development of the equipment. The level of the electrical and technical equipment, the reliability of the automatic monitoring equipment and equipment, etc. Directly decided to repair methods. The development trend of maintenance work is to “state repair” development. In the process of improving the maintenance work, Japan has taken the following effective measures in equipment technology: