Abstract:
본 발명은 철도선로 유기전류 감소를 위한 무선급전 선로 시스템에 관한 것으로서, 철도열차를 지지하는 철도선로(100); 및 복수개로 구성되어 각기 감는 방향을 다르게 구성하여 자기장을 반대방향이 반대가 되도록 형성하는 급전루프(200);를 포함한다. 상기와 같은 본 발명에 따르면, 철도차량이 지상으로부터의 고주파 자기장을 전력으로 사용하여 자기장 발생에 의해 철도선로에 형성된 유도전류를 감소시킴으로써, 철도선로에 유기되는 유도전류를 최소화하여 철도 통신신호 및 철도 감전사고를 미연에 방지하는 효과가 있다.
Abstract:
The present invention relates to a solar power collector. According to an aspect of the present invention, the solar power collector comprises: a light collector for collecting sunlight; a transmission path for receiving and transmitting the sunlight collected by the light collector, in which one end is coupled to the light collector; and a reflectance reducing material which is placed between the light collector and the transmission path, and has a shape of reducing the reflectance of the sunlight collected by the light collector in the transmission path. As a result, the solar power collector of the present invention can increase the transmission efficiency of the sunlight collected in the light collector to the transmission path or a solar charging unit.
Abstract:
The present invention relates to an apparatus for detecting a bolt and nut release state using a Hall sensor. In the apparatus for detecting a bolt and nut release state, which is configured to include release measuring means for measuring a release state between a bolt and a nut fastened; and data analysis means for determining the release of the bolt and the nut by using a detection signal measured by the release measuring means, the release measuring means is configured to have a magnet that is fixed to the bolt; and the Hall sensor that outputs the detection signal corresponding to a change in a distance between the magnet and the Hall sensor. According to the present invention, the bolt and nut release state is detected by utilizing the magnet and the Hall sensor instead of traditional methods such as visual inspection, the detection signal can be analyzed to determine the release of the bolt and the nut, and the bolt and nut release state and positions of the bolt and the nut released can be accurately detected. In particular, according to the present invention, the bolt and nut release state can be accurately detected even at a part defying visual inspection.
Abstract:
The present invention relates to a device for removing magnetic impurities for a transport, which is installed in the transport having a permanent magnet to remove magnetic impurities that may be adhered to the permanent magnet. Provided is a device for removing magnetic impurities for a transport having an exposed permanent magnet (20) at a lower part to establish levitation force or propulsion force through magnetic force, the device including a housing (110) that is made of a nonmagnetic material and is detachably installed at the transport (10) while enveloping the permanent magnet (20), whereby the magnetic impurities may be adhered to the surface of the housing without being adhered directly to the permanent magnet, thereby making it easy to perform a work for removing the impurities. [Reference numerals] (10) Lower part of a train; (20) Permanent magnet