Open AccessRadar-based living object protection for inductive charging of electric vehicles using two-dimensional signal processing
Author(s) -
Tim Poguntke,
Philipp Schumann,
Karlheinz Ochs
Publication year - 2017
Publication title -
wireless power transfer
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.275
H-Index - 11
ISSN - 2052-8418
DOI - 10.1017/wpt.2017.7
Subject(s) - inductive charging , computer science , radar , wireless , battery (electricity) , electric vehicle , automotive industry , signal (programming language) , automotive engineering , electrical engineering , field (mathematics) , engineering , telecommunications , aerospace engineering , power (physics) , physics , quantum mechanics , programming language , mathematics , pure mathematics
As battery capacities become suitable for the mass market, there is an increasing demand on technologies to charge electric vehicles. Wireless charging is regarded as the most promising technique for automatic and convenient charging. Especially in publicly accessible parking spaces, foreign objects are able to enter the large air gap between the charging coils easily. Since the evoked magnetic field does not meet regulations, wireless charging systems are demanded to take further precautions related to the protection of endangered objects. Thus, additional sensors are required to protect primarily living objects by preventing them from being exposed to the magnetic field. In this paper, we propose a new approach for monitoring the air gap under the vehicle underbody using an automotive radar sensor on the vehicle side. The concept feasibility is evaluated with the help of a prototypical implementation. Further, two-dimensional signal processing techniques are applied to meet the requirements of inductive charging systems. Consequently, this paper provides measurement data for relevant use cases frequently discussed in the community of inductive charging.