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This paper proposes an autonomous flying projector (AFP) that projects images from a micro aerial vehicle (MAV) on which a small projector is placed. The AFP works as a public and ubiquitous display, and has a potential for an expansion of projector applications (e.g., a digital signage moving in response to a distribution state of people, and the one following moving targets such as a person and...
In this paper, we design a new mobile traffic warning triangle (MTWT) which consist five parts: distance measurement unit, reflective tracking function, LED indicate, emergency calling and embedded controller. The MTWT can track the white line in road side then move a fix distance and rise the LED indicate triangle. It also can detect the distance between two cars and alarm the driver. The GPS module...
Association of Radio Industries and Businesses (ARIB) has standardized ARIB STD-T109 for IVC (Inter Vehicle Communications) and RVC (Road to Vehicle Communications) as applications of Intelligent Transport Systems in 700 MHz band. In ARIB STD-T109, IVC and RVC share one channel by employing time division duplex. It is possible to avoid frame collisions between IVC and RVC by this scheme. Moreover,...
In recent years, vulnerability of information security of automotive embedded systems has been indicated. Especially, Trojan, which falsifies programs of Electronic Control Unit (ECU), has serious threat for the safety of a car. Therefore, measures against the Trojan are particularly important to secure automotive embedded systems. However, few studies for the Trojan on automotive embedded systems...
Traffic sign recognition contributes to the safety of drivers and people around the car. The system analyzes the road ahead images taken by on-vehicle camera, but blurred and distorted images make it difficult to recognize correct traffic sign. In this paper, we propose a method that deforms from ellipses to perfect circles and applies template matching with distorted sign templates.
The 3D receptive LF band antenna used in vehicle smart key system is realized with ultrathin thickness of 0.32 mm. The antenna consists of three planar coils having a magnetic core of sheet type. For 3D reception, the magnetic axis representing the direction of maximum sensitivity of each coil should be orthogonal with one another. In this paper, a novel technique is introduced to realize that. The...
We have proposed a simple vehicular information acquisition scheme using infrared radar and reflector code in order to recognize vehicle information with low cost. However, since the size of the reflector code is so large and the number of code patterns is not so large, it is necessary to reduce the size and increase the patterns in order to be attached with vehicles. So we propose a new scheme using...
Conventionally, Fundamental Diagrams, which consist of vehicle traffic flow and density pairs, are obtained from intrusive sensor such as inductive loop detectors. However these sensors are uncommon in developing countries as they are embedded in the roads, and consequently expensive to deploy and impractical to implement on busy roads. Our novel method, VDZ with CCTV snap shots can provide the data...
In this paper, various actions of a pedestrian with danger of leading to a traffic accident are analyzed. We have proposed a collision avoidance support system between pedestrian and vehicle. It is important to estimate the danger of the pedestrian. So we propose a new system by using pedestrian moving record.
People pay attention to the relationship between drivers' state before driving and subsequent vehicle operation as drivers' state like insomnia and overwork may contribute to traffic accidents. In this study, we classified drivers' state based on their sleeping hours before each driving session, and then we tried to bring out the effects in vehicle operation data, 20 in total, due to drivers' sleeping...
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