Study on Lighting Optimization of Tunnel Entrance Section Based on Driver’s Visual Adaptation Model

CICTP 2019 ◽  
2019 ◽  
Author(s):  
Zeng’an Wang ◽  
Fei Chen ◽  
Fei Hu ◽  
Jiayun Zhu
Keyword(s):  
Visual Adaptation ◽  
Entrance Section ◽  
Adaptation Model ◽  
Tunnel Entrance

Variation of Drivers' Visual Features in Long-Tunnel Entrance Section on Expressway

2011 ◽  
Vol 3 (1) ◽  
pp. 27-37 ◽  
Author(s):  
Haoxue Liu ◽  
Guangming Ding ◽  
Weihua Zhao ◽  
Hui Wang ◽  
Kaizheng Liu ◽  
...  
Keyword(s):  
Visual Features ◽  
Entrance Section ◽  
Tunnel Entrance

scholarly journals Dynamics of Visual Adaptation With Simultaneous Stimulation of Two Visual Pathways

2021 ◽  
Vol 15 ◽  
Author(s):  
Clemente Paz-Filgueira ◽  
Michael Tan ◽  
Sarah Elliott ◽  
Dingcai Cao
Keyword(s):  
Retinal Ganglion Cells ◽  
Ganglion Cells ◽  
Visual Pathway ◽  
Visual Pathways ◽  
Visual Adaptation ◽  
Time Varying ◽  
Retinal Ganglion ◽  
Simultaneous Stimulation ◽  
Adaptation Model ◽  
Stimulation Of

Primates’ retinal ganglion cells in different visual pathways have been shown to adapt independently (Current Biology 22 (2012) 220–224). However, the manner in which adaptation occurs under simultaneous stimulation of two visual pathways has not yet been explored. In this study, the dynamics of color afterimages were measured while stimulating one or two visual pathway using a time-varying afterimage paradigm. The dynamics of adaptation was approximately equivalent among the three primary visual pathways, but adaptation was slower for simultaneous stimulation of two visual pathways compared to the stimulation of one visual pathway. In addition, we found that the speed of adaptation also depends upon which two pathways are combined. We developed a two-stage adaptation model, both with the same dynamics, to account for the results with simultaneous stimulation of two pathways.

Visual Adaptation Based on Pupil Variation of Urban Underwater Tunnel Entrance

CICTP 2020 ◽  
2020 ◽  
Author(s):  
Fangtong Jiao ◽  
Zhigang Du ◽  
Shoushuo Wang ◽  
Haoran Zheng ◽  
Yudan Ni
Keyword(s):  
Visual Adaptation ◽  
Underwater Tunnel ◽  
Tunnel Entrance

scholarly journals Design and implementation of LED lighting intelligent control system for expressway tunnel entrance based on Internet of things and fuzzy control

2020 ◽  
Vol 16 (5) ◽  
pp. 155014772092574
Author(s):  
Ying Lu ◽  
Jin Wang ◽  
Xiaojun Bai ◽  
Hehan Wang
Keyword(s):  
Control System ◽  
Internet Of Things ◽  
Fuzzy Control ◽  
Traffic Flow ◽  
Intelligent Control ◽  
Flow Speed ◽  
Led Lighting ◽  
Intelligent Control System ◽  
Entrance Section ◽  
Tunnel Entrance

Due to the special characteristics of highway tunnels and vehicles, the interior of the tunnel is required to provide appropriate lighting to ensure the safety of driving vehicles, especially at the entrance section of the tunnel. At present, most of the tunnel entrance lighting control system only considers one single factor, the brightness outside the tunnel. However, in practice, the required lighting brightness in the tunnel is also related to traffic flow, speed, and other factors. Comprehensively utilizing these factors to improve the control strategy is urgently needed. To deal with this problem, this article has designed a multi-source information acquisition system for tunnel lighting based on the Internet of things technology, which combined with fuzzy control theory in order to develop an intelligent control system for LED lighting at the entrance section of the tunnel. The designed system was implemented and long-term tested in a real highway tunnel. The experimental results have shown that the system designed in this article can automatically control the brightness of the lighting inside the tunnel according to the real-time measurements of the brightness outside the tunnel, traffic flow, speed, and so on. Furthermore, the utilizations of the system can minimize the human and power consumption of tunnel lighting while ensuring the safety of tunnel traffic.

Seismic Analysis of the Entrance Section of a Nuclear Power Intake Tunnel

2014 ◽  
Vol 1065-1069 ◽  
pp. 426-432
Author(s):  
Shi Kui Huang ◽  
Jie Zhao
Keyword(s):  
Nuclear Power ◽  
Large Scale ◽  
Seismic Waves ◽  
Seismic Analysis ◽  
Three Dimensional ◽  
Nonlinear Dynamic Analysis ◽  
Analysis Method ◽  
Response Characteristics ◽  
Entrance Section ◽  
Tunnel Entrance

For a nuclear power intake tunnel project, large-scale three-dimensional finite difference model is established by Flac3D to simulate the seismic response regularity of the entrance section of tunnel under the action of seismic waves schedule with the nonlinear dynamic analysis method. Through the input of the site seismic wave, the structure response characteristics of the tunnel entrance and slope are explored and duration curve of tunnel hole lining force under seismic waves action and tunnel lining figure can be obtained. The analysis results show that the anti-seismic weak parts of the tunnel entrance is at the location of tunnel spandrel and the sidewall. The analysis method and conclusions can be for reference in the seismic design of similar nuclear power intake tunnel project.

Analysis and Design Optimization of Collapse Characteristics of Taojiakuang Tunnel Entrance Section

2019 ◽  
Vol 38 (1) ◽  
pp. 551-560 ◽  
Author(s):  
Ran Li ◽  
Nana Han ◽  
Changfeng Yuan ◽  
Qiuru Chen ◽  
Guangming Yu ◽  
...  
Keyword(s):  
Design Optimization ◽  
Analysis And Design ◽  
Entrance Section ◽  
Collapse Characteristics ◽  
Tunnel Entrance

scholarly journals Gender and the Body Size and Shape Aftereffect: Implications for neural processing

2019 ◽  
Author(s):  
Kevin R. Brooks ◽  
Evelyn Baldry ◽  
Jon Mond ◽  
Dick stevenson ◽  
Deborah Mitchison ◽  
...  
Keyword(s):  
Body Size ◽  
Prolonged Exposure ◽  
The Body ◽  
Neural Mechanisms ◽  
Visual Adaptation ◽  
Neural Processing ◽  
Size And Shape ◽  
Before And After ◽  
Processing Body ◽  
Adaptation Model

Prolonged exposure to wide (thin) bodies causes a perceptual aftereffect such that subsequently-viewed bodies appear thinner (wider) than they actually are. This phenomenon is known as visual adaptation. We used the adaptation paradigm to examine the gender selectivity of the neural mechanisms encoding body size and shape. Observers adjusted female and male test bodies to appear normal-sized both before and after adaptation to bodies digitally altered to appear heavier or lighter. In Experiment 1, observers adapted simultaneously to bodies of each gender distorted in opposite directions, e.g. thin females and wide males. The direction of resultant aftereffects was contingent on the gender of the test stimulus, such that in this example female test bodies appeared wider while male test bodies appeared thinner. This indicates at least some separation of the neural mechanisms processing body size and shape for the two genders. In Experiment 2, adaptation involved either wide females, thin females, wide males or thin males. Aftereffects were present in all conditions, but were stronger when test and adaptation genders were congruent, suggesting some overlap in the tuning of gender-selective neural mechanisms. Given that visual adaptation has been implicated in real-world examples of body size and shape misperception (e.g. in anorexia nervosa or obesity), these results may have implications for the development of body image therapies based on the adaptation model.

scholarly journals Study on temperature field of entrance section at high altitude tunnel considering water supply from snowmelt

2021 ◽  
Vol 25 (6 Part B) ◽  
pp. 4597-4604
Author(s):  
Guo-Dong Niu ◽  
Zhi-Qiang Liu ◽  
Ning Li ◽  
Hao-Xuan Zhou ◽  
Gang Yang
Keyword(s):  
Temperature Field ◽  
Water Supply ◽  
High Altitude ◽  
Great Influence ◽  
Side Wall ◽  
Model Tests ◽  
Freezing Injury ◽  
Entrance Section ◽  
Supply Condition ◽  
Tunnel Entrance

To explore the influence of snowmelt supply at the entrance section at high altitude tunnel on tunnel engineering, several indoor model tests were carried out by setting a water-supply system above the model device for simulating the actual snowmelt supply environment. The model tests were based on a project at high altitude tunnel in Qinghai. The varied characteristics of temperature field in typical cross-sections of tunnel entrances with and without water-supply condition under freeze-thaw cycles were analyzed accurately by the model. This study shows that the external water supply has a great influence on the tunnel entrance. When the surrounding rock freezes at the tunnel entrance, it first freezes from the arch, then develops to the side wall, and then spreads to the inverted arch to form a freezing circle. The faster the freezing development rate is, the greater the thickness of the freezing ring is under the water-supply condition. The development of temperature field under water-supply condition is obviously faster than that under normal condition. The distribution characteristics of freezing depth in both conditions are the arch is the largest, the side wall is the second, and the inverted arch is the smallest. This study can provide a reference for analyzing the process of freezing injury caused by high altitude snowmelt water supply into tunnel entrances in western Sichuan.

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