Time filter

Source Type

Hosotani D.,Koito Industries LTD. | Hosotani D.,University of Tsukuba | Yoda I.,Japan Advanced Institute of Science and Technology | Yoda I.,University of Tsukuba | And 3 more authors.
IEEJ Transactions on Electronics, Information and Systems | Year: 2010

Many people are involved in accidents every year at railroad crossings, but there is no suitable sensor for detecting pedestrians. We are therefore developing a ubiquitous stereo vision based system for ensuring safety at railroad crossings. In this system, stereo cameras are installed at the corners and are pointed toward the center of the railroad crossing to monitor the passage of people. The system determines automatically and in real-time whether anyone or anything is inside the railroad crossing, and whether anyone remains in the crossing. The system can be configured to automatically switch over to a surveillance monitor or automatically connect to an emergency brake system in the event of trouble. We have developed an original stereovision device and installed the remote controlled experimental system applied human detection algorithm in the commercial railroad crossing. Then we store and analyze image data and tracking data throughout two years for standardization of system requirement specification. © 2010 The Institute of Electrical Engineers of Japan.


Patent
Kabushiki Kaisha Toyota Jidoshokki, Tokyu Co. and Kabushiki Kaisha Toyota Chuo Kenkyusho | Date: 2013-04-03

A compressor includes a discharge chamber, compressor chamber, valve plate, and discharge reed valve. The valve plate includes a fixing surface, exposed to the discharge chamber, and a discharge port, which communicates the discharge chamber and the compression chamber. The discharge reed valve includes a fixed portion, fixed to the fixing surface, a base portion, separable from the valve plate, and a valve portion, which closes the discharge port. The valve plate includes an annular seal surface, recessed groove, receiving surface, and support surface. The seal surface contacts the valve portion around the discharge port. The recessed groove is arranged in the fixing surface outward from the seal surface. The receiving surface is flush with the fixing surface and contacts a distal region of the valve portion. The support surface is flush with the fixing surface and contacts a central region of the valve portion.


Noaki M.,Tokyo University of Science | Suzuki M.,Tokyu Corporation | Yamaguchi J.,Obayashi Corporation | Ohmiya Y.,Tokyo University of Science
Journal of Environmental Engineering (Japan) | Year: 2015

Experiments were conducted with the aim of elucidating the effect of differences in the ratio Af/Ah=φ of the combustible surface area Af to the horizontal projection area Ah of a combustible on the reduction in heat release rate from supplying with water. Wood cribs (wood species: Japanese cedar) where the surface area ratio Af/Ah=φ can be easily created by changing the number of layers of stacking used for the combustibles. The main experimental parameters were "number of layers of wood cribs," "water delivered density," and "water supplying start time. In the experimental results, regardless of the number of layers of wood cribs, the heat release rate per unit area ΔQ" that was reduced by supplying with water was proportional to the product of the water delivered density w and 1/φ (=Ah/Af). The constant of proportionality was virtually the same value (approximately 12.5 kJ/g in this experiment) for all water delivered densities and all numbers of layers of wood cribs. © 2015, Architectural Institute of Japan. All rights reserved.


Fujikawa Y.,Tokyu Corporation
Japanese Railway Engineering | Year: 2012

Kaminoge station in the Tokyu Oimachi line is a station of about 21,000 passengers per day located in Setagaya ward, Tokyo. In accordance with the express operation commencement in the Oimachi line in March 2008, the rebuilding of the station has been carried out. In this article, we introduce the plan outline of Kaminoge station, which has a building concept of "station design for a regional contribution" through design and functional aspects.


Su D.,University of Tokyo | Shimada Y.,Tokyu Corporation | Nagayama T.,University of Tokyo | Fujino Y.,Yokohama National University
IABSE Conference, Guangzhou 2016: Bridges and Structures Sustainability - Seeking Intelligent Solutions - Report | Year: 2016

One of the primary damages of steel girder bridges is the fatigue cracks which suffer from the local stress concentration caused by heavy traffic. In this paper, dynamic stress responses of such a bridge subjected to traffic-induced load is studied to investigate the capability of a FE model in evaluating stress response and extend to predict fatigue life in local members. Good agreement is found in the comparisons between the measurement and the simulation results either for main member or secondary members. By refining the mesh size, the stress concentration effect could be simulated accurately to evaluate the fatigue phenomenon. Furthermore, by the parametric analysis including the vehicle's load, the running speed, and the road roughness, the results reveal that the quality of the pavement significantly influences the dynamic stress responses of the secondary members and indicates the importance of maintenance of the road pavement.


Ito T.,Tokyu Corporation
Japanese Railway Engineering | Year: 2010

With increasing awareness of global environmental issues at home and abroad, environmental considerations in business activities have become fashionable for corporations as one of the social responsibilities that they must bear. In such a social condition, the company won Minister of Land, Infrastructure, Transport and Tourism Prize in No. 18 global environment grand prix. As for this, an action to the various environment consideration that we performed continuously was evaluated. This paper introduces the examples of architectural environmental considerations of Tokyu Corporation in stations and related facilities, including the actual measured value after their completion.


Yamane T.,Tokyu Corporation
Japanese Railway Engineering | Year: 2014

This thesis is to introduce the outline of the planning and the ongoing construction works of the proceeding redevelopment projects at ampi]]lquot;Shibuya",the sub-center of Tokyo.


Patent
Tokyu Co. and Kabushiki Kaisha Toyota Jidoshokki | Date: 2012-09-24

A compressor includes a discharge chamber, compressor chamber, valve plate, and discharge reed valve. The valve plate includes a fixing surface, exposed to the discharge chamber, and a discharge port, which communicates the discharge chamber and the compression chamber. The discharge reed valve includes a fixed portion, fixed to the fixing surface, a base portion, separable from the valve plate, and a valve portion, which closes the discharge port. The valve plate includes an annular seal surface, recessed groove, receiving surface, and support surface. The seal surface contacts the valve portion around the discharge port. The recessed groove is arranged in the fixing surface outward from the seal surface. The receiving surface is flush with the fixing surface and contacts a distal region of the valve portion. The support surface is flush with the fixing surface and contacts a central region of the valve portion.


Patent
Kabushiki Kaisha Toyota Jidoshokki and Tokyu Co. | Date: 2013-05-22

A compressor includes a valve base plate, which is arranged between a suction chamber and a compression chamber and has a suction port. The valve base plate includes a sealing surface, a recessed groove, a receiving surface, and a support surface. The sealing surface is flush with a fixing surface and contacts the valve portion in an annular manner. The recessed groove is located at an outer side of the sealing surface and recessed with respect to the fixing surface. The recessed groove includes a bottom portion and separates an edge portion of the valve portion from the bottom portion. The receiving surface is flush with the fixing surface and capable of contacting a distal zone of the valve portion. The support surface is flush with the fixing surface and capable of contacting a middle zone located at an inner side of the sealing surface of the valve portion.


Patent
Tokyu Co. and Kabushiki Kaisha Toyota Jidoshokki | Date: 2012-11-13

A compressor includes a valve base plate, which is arranged between a suction chamber and a compression chamber and has a suction port. The valve base plate includes a sealing surface, a recessed groove, a receiving surface, and a support surface. The sealing surface is flush with a fixing surface and contacts the valve portion in an annular manner. The recessed groove is located at an outer side of the sealing surface and recessed with respect to the fixing surface. The recessed groove includes a bottom portion and separates an edge portion of the valve portion from the bottom portion. The receiving surface is flush with the fixing surface and capable of contacting a distal zone of the valve portion. The support surface is flush with the fixing surface and capable of contacting a middle zone located at an inner side of the sealing surface of the valve portion.

Loading Tokyu Corporation collaborators
Loading Tokyu Corporation collaborators