Application of dynamic sensor activation on operating automated headlights
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Control Theory and Technology http://link.springer.com/journal/11768
Application of dynamic sensor activation on operating automated headlights Han DING 1 , Yishan QIAN 1 , Chaohui GONG 2† , Yunfeng HOU 1 , Weilin WANG 2 1.School of Optical-Electrical and Computer Engineering, University for Shanghai Science and Technology, Shanghai 200093, China; 2.Zhejiang Research Center on Smart Rail Transportation, PowerChina Huadong Engineering Corporation Limited, Hangzhou Zhejiang 311225, China Received 2 December 2019; revised 25 April 2020; accepted 27 April 2020
Abstract The controller in an automated vehicle relies on sensors to collect the information needed for handling traffic situations, and reducing the frequency of using sensors could prolong their lifespans. We present in this paper the application of dynamic sensor activation algorithms in discrete event systems to activate/deactivate sensors for collecting information when it is only necessary to automatically operate headlights based on traffic rules. The framework developed in this paper forms a basis for automatically activating/deactivating sensors for other components in an automated vehicle in the future. Keywords: Discrete event systems, automata, supervisory control, sensor activation, automated headlights DOI https://doi.org/10.1007/s11768-020-9190-6
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Introduction
The controller (central processor) in an automated vehicle makes decisions on handling traffic situations, based on data from hundreds of sensors. To find a way to prolong the lifespan of these sensors, we present in this paper how to activate sensors to obtain necessary information for operating headlights, depending on traffic situations, and deactivate the sensors most of the time.
The dynamics of operating headlights and relevant changes in traffic situations can be viewed as consecutive event occurrences, which can be modeled using a discrete event system (DES). Events involved include switching on high beam, flashing high beam, vehicle overtaking, etc. The dynamics of DES are driven by asynchronous occurrences of events. Operating headlights according to traffic rules can be achieved via supervisory control of DES. Ramadge and Wonham [1] initiated the study of su-
† Corresponding author. E-mail: [email protected]. Tel.: +86-18721897136. This work was supported in part by the PowerChina Grant (No. KY2018-JT-20-01-2019), the National Natural Science Foundation of China (No. CNSF-61374058) and the Australian Research Council (No. DP-130100156).
© 2020 South China University of Technology, Academy of Mathematics and Systems Science, CAS and Springer-Verlag GmbH Germany, part of Springer Nature
H. Ding et al. / Control Theory Tech, Vol.
pervisory control of DES in 1987. The purpose of supervisory control of DES is to prevent undesired event sequences. Not all occurrences of events are observable, and the controller only responds to observed event occurrences; this is called partial observation [2, 3]. After that, a new formulation of observation was introduced, in w
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