With the continuous development of network technology, distributed systems have been widely studied and applied. The Publish/Subscribe (Pub/Sub) model supports asynchronous and multipoint communication, enabling the participants of distributed systems to be completely decoupled in time, space, and control flow, thereby solving the problems of integration and dynamic reorganization of distributed systems. The purpose of this paper is to design a distributed system for wheel and rail detection based on ZeroMQ. On the basis of distributed system research, it first analyzes the ZEROMQ message queue operation in detail, combining the characteristics of big data, system architecture, logical architecture, partial architecture and ZERCMQ-based. The distributed design scheme of the distributed system is proposed, and a set of methods to solve the lateral force and vertical force of the wheel-rail contact based on the axonometric method and the combined wheel measurement method are proposed. Finally, the final performance test of the distributed system based on ZEROMQ, the insert performance results show that when the number of insert commands is 10, the average execution time is 2,500,000us, and the query performance results show that when the number of search commands is 10, the average The execution time is 500000us, it can be seen that the system has excellent concurrent performance.

Kavita Sahhil. Distributed System for Wheel and Rail Detection Based on ZeroMQ. Distributed Processing System (2020), Vol. 1, Issue 4: 1-9. https://doi.org/10.38007/DPS.2020.010401.

[1] Pichlik P, Bauer J. Adhesion Characteristic Slope Estimation for Wheel Slip Control Purpose based on UKF. IEEE Transactions on Vehicular Technology, 2020, PP(99):1-1.

[2] Parise F, Gentile B, Lygeros J. A distributed algorithm for average aggregative games with coupling constraints. IEEE Transactions on Control of Network Systems, 2020, 7(2):770-782.

[3] Ofenloch A, Greif F. A Flexible Distributed Simulation Environment for Cyber-Physical Systems Using ZeroMQ. Journal of Communications, 2018, 13(6):333-337.

[4] Conradt T, Wechsung F, Bronstert A. Three perceptions of the evapotranspiration landscape: comparing spatial patterns from a distributed hydrological model, remotely sensed surface temperatures, and sub-basin water balances. Hydrology and Earth System Sciences,17,7(2013-07-25), 2018, 17(7):2947-2966.

[5] Kargarian A, Mohammadi J, Guo J, et al. Toward Distributed/Decentralized DC Optimal Power Flow Implementation in Future Electric Power Systems. IEEE Transactions on Smart Grid, 2018, 9(4):2574-2594.

[6] Fioretto F, Pontelli E, Yeoh W. Distributed Constraint Optimization Problems and Applications: A Survey. Journal of Artificial Intelligence Research, 2018, 61(45):1-16.

[7] Margellos K, Falsone A, Garatti S, et al. Distributed constrained optimization and consensus in uncertain networks via proximal minimization. IEEE Transactions on Automatic Control, 2018, 63(5):1372-1387.

[8] E Sevinç, A Coşar. An Evolutionary Genetic Algorithm for Optimization of Distributed Database Queries. Computer Journal, 2018, 54(5):717-725.

[9] Mallik G, Nataraj N, Raymond J P. Error estimates for the numerical approximation of a distributed optimal control problem governed by the von Kármán equations. Esaim Mathematical Modelling & Numerical Analysis, 2018, 52(3):1137-1172.

[10] Krause S, Blume T, Cassidy N J. Investigating patterns and controls of groundwater up-welling in a lowland river by combining Fibre-optic Distributed Temperature Sensing with observations of vertical hydraulic gradients. Hydrology and Earth System Sciences,16,6(2012-06-29), 2018, 9(1):337-378.

[11] Ferraz R, Ferraz R, Rueda-Medina A C, et al. Genetic optimisation-based distributed energy resource allocation and recloser-fuse coordination. IET Generation Transmission & Distribution, 2020, 14(20):4501-4508.

[12] Hamdani S, Khan A W, Iltaf N, et al. Dynamic distributed trust management scheme for the Internet of Things. Turkish Journal of Electrical Engineering and Computer Sciences, 2020, 29(2):796-815.

[13] A A E B, A A G, B J L, et al. CD30 + lymphomatoid skin toxicity secondary to ipilimumab. JAAD Case Reports, 2020, 6( 4):251-253.

[14] Dehghanpour K, Yuan Y, Bu F, et al. Statistical Modeling of Networked Solar Resources for Assessing and Mitigating Risk of Interdependent Inverter Tripping Events in Distribution Grids. IEEE Transactions on Power Systems, 2020, PP(99):1-1.

[15] Consolaro A. Extensive orthodontically induced dental resorption: What to do?. Dental Press Journal of Orthodontics, 2020, 25(2):18-23.

[16] Avelar S A, Piumbini R M, Ompolo S, et al. Karyotypic description of the stingless bee Meliponaquinquefasciata Lepeletier, 1836 (Hymenoptera, Meliponini) with emphasis on the presence of B chromosomes. Comparative cytogenetics, 2020, 12(4):471-482.

[17] Segura A, Duque E, Rojas A, et al. Functional characterization of fatty acyl desaturase Fads2 and Elovl5 elongase in the Boddart's goggle‐eyed goby, Boleophthalmus boddarti (Gobiidae) suggest an incapacity for long‐chain polyunsaturated fatty acid biosynthesis. 2020, 6(4):416-423.

[18] Kasim K, Deepthi R S. Morphological, Pathological and Molecular Diversity of Colletotrichum capsici inciting Fruit Rot in Chilli (Capsicum annuum L.). Research Journal of Biotechnology, 2020, 12(4):14-21.