{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,2]],"date-time":"2026-01-02T07:44:35Z","timestamp":1767339875781,"version":"build-2065373602"},"reference-count":23,"publisher":"MDPI AG","issue":"18","license":[{"start":{"date-parts":[[2020,9,10]],"date-time":"2020-09-10T00:00:00Z","timestamp":1599696000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Key R &amp; D Program of China","award":["2016YFB1200602-40"],"award-info":[{"award-number":["2016YFB1200602-40"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>A novel absolute positioning sensor for high-speed maglev train based on eddy current effect is studied in this paper. The sensor is designed with photoelectric switch and four groups of unilateral coplanar code-reading detection coil combination. The photoelectric switch realizes the positioning of the marker plate, and the four groups of detection coils read the mileage code of the mileage sign plate to obtain the absolute mileage information of the vehicle, which effectively reduces the quality and volume of the sensor, and reduces the impact of ice and snow. At the same time, the code-reading reliability and speed adaptability index are proposed. The code-reading reliability of the sensor is analyzed and tested under the fluctuation of levitation guidance, and the positioning error under the speed range of 0\u2013600 km\/h is calculated and analyzed. The results show that the novel sensor has the advantages of simple and compact structure. It still satisfies the system\u2019s requirements for absolute vehicle mileage information under the conditions of vehicle operating attitude fluctuations and changes in the full operating speed range.<\/jats:p>","DOI":"10.3390\/s20185167","type":"journal-article","created":{"date-parts":[[2020,9,10]],"date-time":"2020-09-10T09:10:09Z","timestamp":1599729009000},"page":"5167","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Research on Absolute Positioning Sensor Based on Eddy Current Reflection for High-Speed Maglev Train"],"prefix":"10.3390","volume":"20","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7862-1451","authenticated-orcid":false,"given":"Xiaobo","family":"Hong","sequence":"first","affiliation":[{"name":"College of Intelligent Science, National University of Defense Technology, Changsha 410073, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jun","family":"Wu","sequence":"additional","affiliation":[{"name":"College of Intelligent Science, National University of Defense Technology, Changsha 410073, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yunzhou","family":"Zhang","sequence":"additional","affiliation":[{"name":"College of Intelligent Science, National University of Defense Technology, Changsha 410073, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4361-3985","authenticated-orcid":false,"given":"Yongxiang","family":"He","sequence":"additional","affiliation":[{"name":"College of Intelligent Science, National University of Defense Technology, Changsha 410073, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2020,9,10]]},"reference":[{"key":"ref_1","unstructured":"Wu, X.M. (2003). Maglev Train, Shanghai Science and Technology Press."},{"key":"ref_2","unstructured":"Liu, H.Q. (1995). Transrapid, University of Electronic Since and Technology of China Press."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"5224","DOI":"10.3390\/s120505225","article-title":"A high precision position sensor design and its signal processing algorithm for a maglev train","volume":"12","author":"Xue","year":"2012","journal-title":"Sensors"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"7204","DOI":"10.3390\/s110707204","article-title":"Research on the filtering algorithm in speed and position detection of mdpiaglev trains","volume":"11","author":"Dai","year":"2011","journal-title":"Sensors"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"6740","DOI":"10.3390\/s150306740","article-title":"Location Detection and Tracking of Moving Targets by a 2D IR-UWB Radar System","volume":"15","author":"Nguyen","year":"2015","journal-title":"Sensors"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"261","DOI":"10.1016\/j.sna.2013.09.009","article-title":"Design and realization of a novel position-and-speed measurement system with communication function for the low-speed maglev train","volume":"203","author":"Zhang","year":"2013","journal-title":"Sens. Actuators A Phys."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"112","DOI":"10.1007\/s11771-016-3054-8","article-title":"Filtering algorithm and direction identification in relative position estimation based on induction loop-cable","volume":"23","author":"Dou","year":"2016","journal-title":"J. Cent. South Univ."},{"key":"ref_8","doi-asserted-by":"crossref","unstructured":"Nai, W., Li, X., and Yu, Y. (2016, January 9\u201310). Study on Absolute Positioning Technique for Medium-Low Speed Maglev Train Based on Cross Coding Inductive Loop Wire. Proceedings of the International Conference on Advances in Mechanical Engineering & Industrial Informatics, Hangzhou, China.","DOI":"10.2991\/ameii-16.2016.124"},{"key":"ref_9","doi-asserted-by":"crossref","unstructured":"Nai, W., Chen, Y., and Zhang, F. (2016, January 10\u201312). Design and Optimization of Positioning and Speed Measuring System in Engineering Application for Medium-Low Speed Maglev Train. Proceedings of the 2016 IEEE International Conference on Vehicular Electronics and Safety (ICVES), Beijing, China.","DOI":"10.1109\/ICVES.2016.7548179"},{"key":"ref_10","doi-asserted-by":"crossref","unstructured":"Jiang, X., Nai, W., and Yilixiati, A. (2017, January 17\u201319). A Train Positioning Mechanism for Medium-Low Speed Maglev Train Based on Parity Check Cross Coding Inductive Loop Wire. Proceedings of the 2017 3rd IEEE International Conference on Control Science and Systems Engineering (ICCSSE), Beijing, China.","DOI":"10.1109\/CCSSE.2017.8087938"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"4225","DOI":"10.3390\/s140304225","article-title":"RFID-Based Vehicle Positioning and Its Applications in Connected Vehicles","volume":"14","author":"Wang","year":"2014","journal-title":"Sensors"},{"key":"ref_12","first-page":"1902","article-title":"Survey on the techniques of speed and position measurement of maglev train","volume":"11","author":"Qian","year":"2004","journal-title":"J. Shanghai Jiaotong Univ."},{"key":"ref_13","first-page":"82","article-title":"Study on the Techniques of the Locating and Speed-measuring of the Aerotrain","volume":"25","author":"Long","year":"2003","journal-title":"J. Natl. Univ. Def. Technol."},{"key":"ref_14","first-page":"30","article-title":"Train Positioning Technology of Railway and Mass Transit","volume":"1","author":"Liu","year":"2001","journal-title":"Urban Mass Transit."},{"key":"ref_15","first-page":"109","article-title":"Research on speed and position detection system of high speed maglev train","volume":"33","author":"Wu","year":"2011","journal-title":"J. Natl. Univ. Defense Tech."},{"key":"ref_16","first-page":"455","article-title":"Location and speed detection system for high-speed maglev vehicle","volume":"39","author":"Guo","year":"2004","journal-title":"J. Southwest Jiaotong Univ."},{"key":"ref_17","first-page":"12","article-title":"Design of speed and position detection system for high-speed maglev","volume":"31","author":"Qian","year":"2005","journal-title":"Comp. Eng."},{"key":"ref_18","unstructured":"Yang, S.Y. (2006). Theory and Practice of Electromagnetic Shielding, National Defense Industry Press."},{"key":"ref_19","first-page":"86","article-title":"Calculation of Shielding Effectiveness of Melt Wire Mesh of Cable","volume":"28","author":"Wang","year":"2010","journal-title":"J. Electron. Meas. Instrum."},{"key":"ref_20","doi-asserted-by":"crossref","unstructured":"Qian, C., Han, Z., and Xie, W. (2007, January 5\u20138). Research on Absolute Positioning System for High-speed Maglev Train. Proceedings of the 2007 International Conference on Mechatronics and Automation, Harbin, China.","DOI":"10.1109\/ICMA.2007.4303669"},{"key":"ref_21","first-page":"116","article-title":"The Design and Analysis of Recognition Structure for Absolute Train Positioning System of High-speed Maglev Train System","volume":"14","author":"Dhillon","year":"2004","journal-title":"Eur. J. Clin. Investig."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"10621","DOI":"10.3390\/s120810621","article-title":"Optimal Design of the Absolute Positioning Sensor for a High-Speed Maglev Train and Research on Its Fault Diagnosis","volume":"12","author":"Zhang","year":"2012","journal-title":"Sensors"},{"key":"ref_23","first-page":"33","article-title":"Research on absolute positioning system of maglev vehicle","volume":"3","author":"Wang","year":"2005","journal-title":"Electr. Drive Locomot."}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/20\/18\/5167\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T10:08:47Z","timestamp":1760177327000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/20\/18\/5167"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,9,10]]},"references-count":23,"journal-issue":{"issue":"18","published-online":{"date-parts":[[2020,9]]}},"alternative-id":["s20185167"],"URL":"https:\/\/doi.org\/10.3390\/s20185167","relation":{},"ISSN":["1424-8220"],"issn-type":[{"type":"electronic","value":"1424-8220"}],"subject":[],"published":{"date-parts":[[2020,9,10]]}}}