Journal of the Korea Society of Computer and Information (한국컴퓨터정보학회논문지)

Korean Society of Computer Information (한국컴퓨터정보학회)
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A Disembarking Notification Application Based on Smart Device using High Frequencies from Built-in Speaker of Public Transportation

  • Received : 2019.03.28
  • Accepted : 2019.04.10
  • Published : 2019.04.30
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Abstract

Recently, many people enjoy movies and music content through their smart devices for using public transportation like as bus or subway. However, because their concentration is aimed at content on their smart devices, passengers sometimes forget to disembark and miss their destination stations. Therefore, in this paper, we propose a destination notification system for disembarking public transport using high frequencies based on the smart devices. We tested 1,000 times real-time destination notification to performance evaluate of the proposed application and service system. According to the test results, the proposed system showed 99.4% and 99.6% accuracy and we confirmed that it could be very useful. As such, the proposed system could be a useful technology for notifying smart device users when to get off public transport, capable of global commercialization.

Keywords

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Fig. 1. The flow of the proposed application and server system

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Fig. 2. An example of proposed high frequencies for disembarking notification

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Fig. 3. The pseudo code for high frequencies detection to notify disembarking

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Fig. 4. Screen composition of the proposed application for disembarking notification

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Fig. 5. The disembarkation notification of the proposed application when subway is approaching the destination

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Fig. 6. Seoul subway line 2 map and the high frequencies value for each subway station

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Fig. 7. The disembarkation notification result of the pair high frequencies from each smart device

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Fig. 8. The disembarkation notification result at two distinguish space of the subway

Table 1. The value of high frequencies for each bit data

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Table 2. The value of a pair high frequencies for each subway station

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