Design optimization of key components’ spatial position of unilateral axle counting sensor

PurposeThe unilateral axle counting sensor is an important railway signal device that detects a train. For efficient and stable detection, the amplitude of induced electromotive force and its changes must be big enough. Therefore, the purpose of this study is to find a way to design and optimize the sensor structure quickly and accurately.Design/methodology/approachWith the help of extensive electromagnetic field calculations, the study puts forward a modified model based on the finite element method, establishes an independent air domain around the sensor, wheel and the railway and adopts a unique grid division method. It offers a design optimization method of the induction coil angles and its spatial location with respect to the excitation coil by using the combination weighting algorithm.FindingsThe modified modeling method can greatly reduce the number of finite element mesh and the operation time, and the method can also be applied to other areas. The combination weighting algorithm can optimize the structure of the sensor quickly and accurately.Originality/valueThis study provides a way to design and optimize the structure of the sensor and a theoretical basis for the development. The results can improve and expand the technology of the axle counting sensor.

Research on Internet of Things Technology in Railway Signal Device Management

Signal device management is an important mission to ensure the safe operation of the railway, and it is a definite orientation for the future development to apply the Internet of Things technology in railway signal device management. This article introduces the relevant concepts of the Internet of Things, and analyzes the current information construction level of China's railway signal device management. Based on actual requirements on railway signal device management, it gives the implementation plans of management platform based on the Internet of Things technology and as well analyzes the key technology. And it provides a reference for the application of the Internet of Things in the railway signal device management.