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This thesis describes a new method that in real time predicts fall and collision in order to support remote control of a tracked vehicle with sub-tracks. A tracked vehicle has high ability of getting over rough terrain. However, it is difficult for an operator at a remote place to control the vehicle's moving direction and speed. Hence, we propose a new path evaluation system based on the measurement...
Our present study aims to establish a method for estimating the position of a mobile robot traversing irregular ground. More specifically, we apply simultaneous localization and mapping (SLAM) using a laser range finder (LRF). We derive an expression to estimate the position of the mobile robot relative to a fixed landmark using the LRF. We use a pole for the landmark in our experiment. We confirm...
Due to the vastness of the vineyards in Hokkaido, it is very hard for its workers to eradicate weeds. In order to solve this problem, we aim to develop a weeding robot with a multi-link manipulator, using a visual sensing technique of stereo camera system for recognizing the trunk of grape. However this technique lacks accuracy because the stereo camera system generally cannot avoid the error in measurement...
In this paper, we propose the face detection method for tracking a human by a mobile-robot. We obtain images from a web camera, and detect faces by focusing on skin colors and eyes as facial features. If we detect faces from images, we trace the detected human, take a picture of him/her, and print it automatically by using the mobile-robot. In order to show the effectiveness of the proposed method,...
For manipulation of remote mobile robots, adequate scheduling of tasks and selecting of operational commands are required. This paper presents an analysis procedure to make the task switching profile visible by utilizing the Self-Organizing Map (SOM) and new cluster growing method. For practical verification, an experiment system with radio-controlled construction equipments was built, and the proposed...
In this paper, we propose an intelligent cane developed based on passive robotics concept for supporting the elderly and the disabled persons who have difficulty walking. The intelligent passive cane (IP Cane) is controlled by servo brakes attached to the wheels and intrinsically safe for humans, because it cannot move unintentionally, i.e., it has no driving actuators. In addition, the IP cane provides...
On a remote vehicle manipulation, both a task scheduling and an adequate selecting of operation commands are significant to execute sequential task successfully. Hence, for a future assistive intelligent mechatronics, automatic recognition of the operator's task-switching is required to support him / her timely. In the present research, an analysis procedure to make the task-switching strategy visible...
The aim of our research is to realize a navigation method that can be applied to various type of mobile robots and environments. In this paper, we propose a method to estimate robot's location for the situation in which camera posture varies irregularly. Our method consists of two processes, generation of a feature vector from the image acquired by the robot and identification of a location of the...
This paper describes a low-cost and flexible vegetation monitoring system and compares it with traditional remote sensing systems such as airplanes and satellites. We have developed a small unmanned aerial vehicle (UAV) equipped with visible and infrared cameras for vegetation observation. This system can automatically generate widespread high-resolution mosaic image and calculate the vegetation index...
We are developing new mobile robot platforms to achieve a given mission. The concept of developing robot is high-functional and grouped rescue robots. The robot group consists of two type of robot, one is high functional pioneer type, and the other is relatively small and high mobility semi-automatics surveyor type. The pioneer type equips a manipulator to eliminate light weight obstacles and open...
This article reports result of experimental analysis in order to declare human's skill on a machine manipulation for global research on human adaptive mechatronics(HAM), that supports human and enhances human-machine total system. Using tele-operation wheel mobile robot with maze-task, the process of the manipulation of operator's were measured and were analyzed via identification of the operators...
In this paper, an experimental analysis to evaluate human skill on a machine manipulation is introduced for realization of human adaptive mechatronics(HAM). HAM is a novel concept of intelligent mechanical systems that adapt themselves to assist and improve the user's skill. Using a tele-operated wheel mobile robot and a maze task, we acquired data of which human became skilled, and analyzed them...
In ubiquitous computing, localization of an radio frequency identification (RFID) tag attracts great attention, since it is a key to interfaces with location awareness such as haptic interfaces and navigations for blind people/mobile robots. Since an RFID tag with carrier frequencies of 135kHz or 13.56MHz has a loop antenna, the tag's position estimation is reduced to localization of a magnetic dipole...
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