Design of Counter Beam Tunnel Lights for CIE 88 : 2004 Regulation in Threshold Zone
To enhance driving safety, a counter beam light is proposed to meet CIE (International Commission on Illumination) specifications for tunnel lighting. The proposed new counter beam light (CBL) acts as a qualified counter beam light to help tunnel road lighting meet the CIE 88 : 2004 regulation stand...
Saved in:
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2020-01-01
|
| Series: | International Journal of Optics |
| Online Access: | http://dx.doi.org/10.1155/2020/6145638 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832551293453860864 |
|---|---|
| author | Ming-Jui Chen Hien-Thanh Le Lanh-Thanh Le Wei-Hsiung Tseng Wei-Yang Lee Si-Yuan Chen Sheng-Yen Chen Hsing-Yuan Liao Yung-Cheng Li Hsiao-Yi Lee |
| author_facet | Ming-Jui Chen Hien-Thanh Le Lanh-Thanh Le Wei-Hsiung Tseng Wei-Yang Lee Si-Yuan Chen Sheng-Yen Chen Hsing-Yuan Liao Yung-Cheng Li Hsiao-Yi Lee |
| author_sort | Ming-Jui Chen |
| collection | DOAJ |
| description | To enhance driving safety, a counter beam light is proposed to meet CIE (International Commission on Illumination) specifications for tunnel lighting. The proposed new counter beam light (CBL) acts as a qualified counter beam light to help tunnel road lighting meet the CIE 88 : 2004 regulation standard in the threshold zone in both simulation and in practice. Through appropriate arrangements of the counter beam light and conventional fluorescent lights on the tunnel ceiling, we demonstrate that road tunnel lighting meeting CIE 88 : 2004 standards can be accomplished. Based on LiteStar four-dimensional simulation, the source file created through the measurement of the proposed CBL prototype achieved an average road surface brightness of 121 cd/m2, which is greater than the minimum regulation level of 105 cd/m2, a brightness uniformity of 0.88 (minimum regulation level of 0.4), longitudinal brightness uniformity of 0.98 (minimum regulation level of 0.6), a glare factor of 4.41% (maximum level of 15%), and a contrast revealing coefficient of 1.08, which is above the 0.6 minimum level in the threshold zone. |
| format | Article |
| id | doaj-art-ed10b18298a84033a57088e0fa877998 |
| institution | Kabale University |
| issn | 1687-9384 1687-9392 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Optics |
| spelling | doaj-art-ed10b18298a84033a57088e0fa8779982025-02-03T06:04:37ZengWileyInternational Journal of Optics1687-93841687-93922020-01-01202010.1155/2020/61456386145638Design of Counter Beam Tunnel Lights for CIE 88 : 2004 Regulation in Threshold ZoneMing-Jui Chen0Hien-Thanh Le1Lanh-Thanh Le2Wei-Hsiung Tseng3Wei-Yang Lee4Si-Yuan Chen5Sheng-Yen Chen6Hsing-Yuan Liao7Yung-Cheng Li8Hsiao-Yi Lee9Department of Electrical Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 80778, TaiwanDepartment of Electrical Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 80778, TaiwanDepartment of Electrical Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 80778, TaiwanDepartment of Aviation & Communication Electronics, Air Force Institute of Technology, Kaohsiung City 820, TaiwanDepartment of Electrical Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 80778, TaiwanDepartment of Electrical Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 80778, TaiwanDepartment of Electrical Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 80778, TaiwanDepartment of Electrical Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 80778, TaiwanDepartment of Materials Science and Engineering, National Tsing Hua University, No. 101, Section 2, Kuang-Fu Road, Hsinchu 30013, TaiwanDepartment of Electrical Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 80778, TaiwanTo enhance driving safety, a counter beam light is proposed to meet CIE (International Commission on Illumination) specifications for tunnel lighting. The proposed new counter beam light (CBL) acts as a qualified counter beam light to help tunnel road lighting meet the CIE 88 : 2004 regulation standard in the threshold zone in both simulation and in practice. Through appropriate arrangements of the counter beam light and conventional fluorescent lights on the tunnel ceiling, we demonstrate that road tunnel lighting meeting CIE 88 : 2004 standards can be accomplished. Based on LiteStar four-dimensional simulation, the source file created through the measurement of the proposed CBL prototype achieved an average road surface brightness of 121 cd/m2, which is greater than the minimum regulation level of 105 cd/m2, a brightness uniformity of 0.88 (minimum regulation level of 0.4), longitudinal brightness uniformity of 0.98 (minimum regulation level of 0.6), a glare factor of 4.41% (maximum level of 15%), and a contrast revealing coefficient of 1.08, which is above the 0.6 minimum level in the threshold zone.http://dx.doi.org/10.1155/2020/6145638 |
| spellingShingle | Ming-Jui Chen Hien-Thanh Le Lanh-Thanh Le Wei-Hsiung Tseng Wei-Yang Lee Si-Yuan Chen Sheng-Yen Chen Hsing-Yuan Liao Yung-Cheng Li Hsiao-Yi Lee Design of Counter Beam Tunnel Lights for CIE 88 : 2004 Regulation in Threshold Zone International Journal of Optics |
| title | Design of Counter Beam Tunnel Lights for CIE 88 : 2004 Regulation in Threshold Zone |
| title_full | Design of Counter Beam Tunnel Lights for CIE 88 : 2004 Regulation in Threshold Zone |
| title_fullStr | Design of Counter Beam Tunnel Lights for CIE 88 : 2004 Regulation in Threshold Zone |
| title_full_unstemmed | Design of Counter Beam Tunnel Lights for CIE 88 : 2004 Regulation in Threshold Zone |
| title_short | Design of Counter Beam Tunnel Lights for CIE 88 : 2004 Regulation in Threshold Zone |
| title_sort | design of counter beam tunnel lights for cie 88 2004 regulation in threshold zone |
| url | http://dx.doi.org/10.1155/2020/6145638 |
| work_keys_str_mv | AT mingjuichen designofcounterbeamtunnellightsforcie882004regulationinthresholdzone AT hienthanhle designofcounterbeamtunnellightsforcie882004regulationinthresholdzone AT lanhthanhle designofcounterbeamtunnellightsforcie882004regulationinthresholdzone AT weihsiungtseng designofcounterbeamtunnellightsforcie882004regulationinthresholdzone AT weiyanglee designofcounterbeamtunnellightsforcie882004regulationinthresholdzone AT siyuanchen designofcounterbeamtunnellightsforcie882004regulationinthresholdzone AT shengyenchen designofcounterbeamtunnellightsforcie882004regulationinthresholdzone AT hsingyuanliao designofcounterbeamtunnellightsforcie882004regulationinthresholdzone AT yungchengli designofcounterbeamtunnellightsforcie882004regulationinthresholdzone AT hsiaoyilee designofcounterbeamtunnellightsforcie882004regulationinthresholdzone |