公开(公告)号：US3844513A

公开(公告)日：1974-10-29

申请号：US29425172

申请日：1972-10-02

Applicant: ERICSSON TELEFON AB L M

Inventor： BERNHARDSON R ,  LUNDFELDT K ,  ULLERFORS K

IPC: B61K9/12 ,  G01B7/28

CPC classification number: G01B7/282 ,  B61K9/12

Abstract: A system and method for detecting the presence of wheel flats on rail vehicles. The system includes a voltage source, one side of which is connected to a first rail of a track and the other to a second rail extending parallel with the first rail in a manner whereby the current circuit includes the rim of the wheel being sensed. The connection points are spaced in the longitudinal direction of the track such that the distance between the connection points is shorter than the smallest axle distance occurring in the vehicle. The circuit also includes an impedance and a detecting means connected over a portion of the impedance to sense changes in voltage resulting from a break in the circuit caused by a wheel flat.

Abstract translation: 一种用于检测轨道车辆上车轮平面的存在的系统和方法。 该系统包括电压源，其一侧连接到轨道的第一轨道，而另一侧连接到与第一轨道平行延伸的第二轨道，从而电流回路包括被感测的车轮轮缘。 连接点在轨道的纵向方向上间隔开，使得连接点之间的距离短于在车辆中出现的最小车轴距离。 该电路还包括一个阻抗和一个检测装置，它连接在阻抗的一部分上，以感测由于轮子平坦导致的电路中断引起的电压变化。