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고령자 친화형 차량내부 정보시스템 개발을 위한 사용자 요구사항 도출
배성현,Jose Fernando Sabando,김상호 대한안전경영과학회 2017 대한안전경영과학회지 Vol.19 No.1
The objectiveof this study is to analyze the needs anddetermine the requirements ofelder drivers for effectivelyusing In-vehicle Information Systems (IVIS), by reducing cognitive and physical impact on this vulnerable group. The persona method was used to determine the relevant characteristics of older drivers. Task analysis was performed in order to obtain general interaction problems of the personas when using a common function of recent days IVIS. The results were classified in the different usability goals as general requirements, specific needs. This study suggest improvement directions in order to develop an elderly friendly IVIS; in addition, different usability metrics were suggested. In this way, elder drivers would easily interact with new powerful functions supplied by IVIS of modern cars; while improving safety and comfort of an rapidly aging society.
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Jong Gyu Shin,Jose Fernando Sabando,Jong Ha Woo,Sang Ho Kim 대한인간공학회 2016 대한인간공학회 학술대회논문집 Vol.2016 No.11
Objective: The aim of this study is to compare the driver’s emotional responses of different haptic signals configurations delivered through a haptic actuator. It is to check whether haptic signals can convey transparent messages or information to drivers. Background: In recent days, cars have become intelligent systems that interact with the driver, historically the display of information has been done through the visual and auditory modality. However, multimodal displays have been introduced by car manufacturers in order to declutter the visual sense. In order to take advantage of the haptic modality, and reduce the driver’s cognitive overload; it needs to be confirmed that this channel can be used to deliver higher quality information instead of just being used as a redundant part of the multimodal display. Method: Experiments were performed to gather the emotional responses for the different configurations of haptic signals delivered through a computerized interactive driving simulator. The haptic signals were configured by using different sets of frequency and acceleration values. 20 pair of adjectives were defined to measure the emotional value of each haptic signal configuration and the semantical differential method was used to measure them using a 5 point scale. Results: The emotional responses were classified in two groups: urgency and awareness. An emotional map was constructed with the different signal configurations and the average emotional responses. Conclusion: The study shows that the perceived urgency of the haptic signals can be influenced by a proper coding. High urgency was obtained with higher values of frequency and acceleration; low urgency was obtained when low values of frequency and acceleration were used. But for the awareness factor, the responses were spread out meaning that different pairs of adjectives should be used to get a better understanding of how to influence this factor. Application: In this study it has been proven that information can be delivered independently through a haptic display and therefore can be used as a standalone modality in future in-vehicle information systems.
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Kim, Sang Ho,Shin, Jong Gyu,Sabando, Jose Fernando Korean Institute of Industrial Engineers 2017 Industrial Engineeering & Management Systems Vol.16 No.4
Objective: The objective of this study is to compare the driver's response rate and time between auditory and haptic signals under different task conditions. It is for checking whether haptic signals can be used as a primary and independent channel of the multimodal in-vehicle warning system. Background: As recent automobiles are evolving into intelligent information systems the amount of information that drivers need to process increase correspondingly. Too much information presented simultaneously on visual displays may distract drivers' attention and it may cause serious traffic accidents. It is hypothesized that multimodal in-vehicle information systems can be a possible solution for reducing the driver's cognitive overload. Method: Experiments were conducted to gather response rate and time for given warning signals delivered in auditory and haptic modalities, using a computerized interactive driving simulator. The subjects were tested under two different task conditions: driving and non-driving. Response rate and time for the haptic signals were compared with those for the auditory signals. Conclusion: The study shows that there is no significant difference in response rate between the two modalities. For response time, auditory signals draw faster responses compared to the haptic signals in 70 msec on average. Application: The result from this study supports that haptic signals can be used as substitute warnings under the condition that other channels are busy and signals can be initiated a bit earlier than the auditory signals.
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Sang Ho Kim,Jong Gyu Shin,Jose Fernando Sabando 대한산업공학회 2017 Industrial Engineeering & Management Systems Vol.16 No.4
Objective: The objective of this study is to compare the driver’s response rate and time between auditory and haptic signals under different task conditions. It is for checking whether haptic signals can be used as a primary and independent channel of the multimodal in-vehicle warning system. Background: As recent automobiles are evolving into intelligent information systems the amount of information that drivers need to process increase correspondingly. Too much information presented simultaneously on visual displays may distract drivers’ attention and it may cause serious traffic accidents. It is hypothesized that multimodal in-vehicle information systems can be a possible solution for reducing the driver’s cognitive overload. Method: Experiments were conducted to gather response rate and time for given warning signals delivered in auditory and haptic modalities, using a computerized interactive driving simulator. The subjects were tested under two different task conditions: driving and non-driving. Response rate and time for the haptic signals were compared with those for the auditory signals. Conclusion: The study shows that there is no significant difference in response rate between the two modalities. For response time, auditory signals draw faster responses compared to the haptic signals in 70 msec on average. Application: The result from this study supports that haptic signals can be used as substitute warnings under the condition that other channels are busy and signals can be initiated a bit earlier than the auditory signals.
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