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To resolve the lifetime issue of sensor networks, various solutions, such as mobile-node deployment, energy-efficient routing protocol, and low-power hardware design (e.g., micro processor, small size RAM), have been proposed in modern sensor networks. However, these solutions can only extend the lifetime of sensor networks but cannot achieve immortal sensor networks. Fortunately, an emerging technology...
To provide complete vehicle information protection mechanism, this work proposes a self-adaptive system for vehicle information security applications (SAV). Different from the conventional software-based information access method, in the SAV, the access control policies are designed by the protection matrices and implemented as reconfigurable hardware modules. The information access method becomes...
The lifetime of wireless sensor networks are constrained by its limited battery capacity. Therefore, the lifetime is widely regard as a bottleneck of technique of wireless sensor network. Recently, the emerging breakthrough in wireless power transfer technique is expected to eliminate the power constraint bottleneck. In this paper, we propose an intelligent wireless charging vehicle (IWCV) strategy...
In this study, we developed a driver-assistance system on Lane Detection during nighttime by mounting a CCD camera inside the car to capture images and to use computer visions to detect lanes and the driving condition in front of the vehicle. This system can increase the safety of driving during low light condition. The features of this system includes: lane detection, surrounding vehicles detection,...
In this study, a road condition detection device (RCDD), which consists of an Arduino based sensing module and an Android smartphone based user interface, is designed and implemented for vehicles. First, the Arduino based sensing module is designed to evaluate the road conditions in real-time and send the evaluation result with raw data to the smartphone. While the smartphone receives the data from...
To provide complete vehicle information protection mechanism, this work proposes a vehicle information security system (VISS) with self-adaptation. The VISS integrates the concept of role-based access control, so that it can support multiuser access mechanism to avoid illegal modification. Further, all the access control policies for the information are realized as hardware circuits, so that the VISS...
We propose a method that can give the user a better dynamic route data. The system first create a road network containing basic road information,thenthis study develops anapplication program which uses anandroid PAD to collect driving data and fuel consumption data, and then turn it into a multi-layered network of road matrix by using a data warehouse. These aggregated road data provide a way to support...
This paper is dedicated to a license plate recognition (LPR) system for moving vehicles by using car video camera. The proposed LPR method mainly consists of preprocessing, plate location, and character segmentation & recognition. At irst, the possible regions of license plate are enhanced from the captured images through the proposed edge detection method and gradient-based binarization....
A nighttime driver-assistance system is developed in this study. Through lane detection, neighboring vehicle detection, lane deviation detection, and front vehicle distance estimation of real-time road images retrieved using a charge-coupled device camera, the developed system can issue timely alarms to warn drivers and increase their driving safety at nighttime. In lane detection, the developed system...
In this paper, a scheme of moving-vehicles behavior detection based on a Zigbee network is proposed. Three-axis accelerometers are installed on vehicles to capture the moving vehicle postures. A fuzzy inference system is developed to infer the six basic states of vehicle posture, such as normal driving, left/right turning, departure, accelerate, braking and bumping. Based on the recognition of vehicle...
This paper is dedicated to a license plate location method for moving vehicles passing through a gate in various weather conditions. The proposed license plate location algorithm mainly consists of edge detection, binarization, and license-plate judgment. Based on histogram analysis of a gradient image, the possible position of license plate is located from the image through the proposed effective...
Real-time information of tire friction forces is invaluable for vehicle control systems, such as ABS and the electronic stability program (ESP), to achieve better stability and maneuverability. To estimate tire forces on-line, this paper proposes a robust tire force estimation algorithm which is able to identify the longitudinal and lateral tire forces of each individual wheel. In addition, the estimation...
The FDTD method is used to calculate current densities induced in a charged human body approaching to a vehicle due to an ESD event in the frequency range from 10 Hz to 50 MHz. Obtained maximum current densities induced in the human body at frequencies of 10 kHz~50 MHz are much higher than the threshold current density of 1 μA/cm2 for the steady-state current flow cases, which may cause biological...
In this paper, we proposed an intelligent visual surveillance in specific sea-area based on video processing. We apply the technology of computer vision and video processing to implement the automatic system. At the first, we separate background and foreground in videos, and set a weight to update the new background. To extract the moving ships in videos, we apply the techniques including the change...
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