| Presentation | 2017-07-29 Relation with Human Visual Recognition and Illumination Intensity Based on Duty Ratio of Pulse Driven LED Masaki Miyatani, Hiroki Yamamoto, Mineyuki Nishio, Nobutomo Uehara, Masaru Kamano, Emiko Yasuno, Yohsuke Kinouchi, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | LED lightning with pulsed width modulation (PWM) method is growing in use of modern electronic devices. This method can control brightness of pulsed LED lights by changing duty ratio of lights-on and lights-out time. In this study, visual recognition measurements of human eyes were conducted with various duty ratios of pulsed LED lights over multiple wavelengths. Some results of visual recognition measurements revealed false recognitions that the pulsed lights had same brightness with DC or were brighter than the DC light. Although the emitting time of pulsed light with less than 100% duty ratio of PWM is shorter than that of DC light, the number of the false recognitions increased in proportion to the duty ratio of pulsed light. It varied with wavelengths of lights that a threshold of averaged duty ratio recognized as same brightness with DC lights. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | LED / Drive system / DC driven / Pulse driven / Duty ratio / Visual recognition |
| Paper # | BioX2017-13,MBE2017-22 |
| Date of Issue | 2017-07-22 (BioX, MBE) |
| Conference Information | |
| Committee | MBE / BioX |
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| Conference Date | 2017/7/29(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tokushima University |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | ME, Biometrics, general |
| Chair | Kazuki Nakajima(Univ. of Toyama) / Kazuhiko Sumi(AGU) |
| Vice Chair | Masaki Kyoso(TCU) / Hiroshi Takano(Toyama Pref. Univ.) / Hitoshi Imaoka(NEC) |
| Secretary | Masaki Kyoso(Toyama Pref. Univ.) / Hiroshi Takano(Kindai Univ.) / Hitoshi Imaoka(Shizuoka Univ.) |
| Assistant | Kim Juhyon(Univ. of Toyama) / Takumi Kobayashi(YNU) / Masatsugu Ichino(Univ. of Electro-Comm.) / Naoyuki Takada(Secom) / Norihiro Okui(KDDI Labs.) |
| Paper Information | |
| Registration To | Technical Committee on ME and Bio Cybernetics / Technical Committee on Biometrics |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Relation with Human Visual Recognition and Illumination Intensity Based on Duty Ratio of Pulse Driven LED |
| Sub Title (in English) | |
| Keyword(1) | LED |
| Keyword(2) | Drive system |
| Keyword(3) | DC driven |
| Keyword(4) | Pulse driven |
| Keyword(5) | Duty ratio |
| Keyword(6) | Visual recognition |
| 1st Author's Name | Masaki Miyatani |
| 1st Author's Affiliation | National Institute of Technology, Anan College(NIT., Anan College) |
| 2nd Author's Name | Hiroki Yamamoto |
| 2nd Author's Affiliation | National Institute of Technology, Anan College(NIT., Anan College) |
| 3rd Author's Name | Mineyuki Nishio |
| 3rd Author's Affiliation | National Institute of Technology, Anan College(NIT., Anan College) |
| 4th Author's Name | Nobutomo Uehara |
| 4th Author's Affiliation | National Institute of Technology, JAPAN(NIT., JAPAN) |
| 5th Author's Name | Masaru Kamano |
| 5th Author's Affiliation | National Institute of Technology, Anan College(NIT., Anan College) |
| 6th Author's Name | Emiko Yasuno |
| 6th Author's Affiliation | National Institute of Technology, Anan College(NIT., Anan College) |
| 7th Author's Name | Yohsuke Kinouchi |
| 7th Author's Affiliation | Tokushima University(Tokushima Univ.) |
| Date | 2017-07-29 |
| Paper # | BioX2017-13,MBE2017-22 |
| Volume (vol) | vol.117 |
| Number (no) | BioX-164,MBE-165 |
| Page | pp.pp.21-24(BioX), pp.21-24(MBE), |
| #Pages | 4 |
| Date of Issue | 2017-07-22 (BioX, MBE) |