書誌事項
- タイトル別名
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- An Analysis of the Flickering Patterns of LED Warning Lights for Visibility Improvement Based on Psychophysical Measurements
- LEDケイヒカリトウ ノ シニンセイコウ ジョウ ノ タメ ノ カンセイ シヒョウ ニ モトズク テンメツ パターン カイセキ
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Recently, the number of emergency vehicles equipped with light-emitting diode (LED) warning lights has increased. Unlike traditional beanie lights, LED warning lights can display various flickering patterns because these patterns are controlled by computers. The purpose of this study was to develop flickering patterns that had a high level of visibility. Lighting time (ON time), no-lighting time (OFF time), light intensity and rising time (UP time) were controlled by a microcomputer. Further, the visibility of each LED flickering pattern was evaluated quantitatively. Specifically, the visibility of the flickering patterns using the psychophysical measure of “conspicuity (easy to stand out)” from Bradley-Terry paired comparison model was identified. Results showed that OFF time had a significantly greater influence on visibility than ON time. Moreover, the flickering pattern with 66 msec of OFF time provided optimal visibility, regardless of the ON time, by making the visibility map, which represented the degree of visibility between ON time and OFF time. Therefore, the ideal combination between ON time and OFF time was determined.
収録刊行物
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- 精密工学会誌
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精密工学会誌 79 (11), 1159-1164, 2013
公益社団法人 精密工学会
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詳細情報 詳細情報について
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- CRID
- 1390001204830001024
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- NII論文ID
- 130003384948
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- NII書誌ID
- AN1003250X
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- ISSN
- 1882675X
- 09120289
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- NDL書誌ID
- 024986699
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- 使用不可