• Title/Summary/Keyword: robotics

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A Survey on Teacher's Cognition for the Improvement of Robotics Education in Public Education (공교육의 로봇교육 내실화를 위한 교사 인식 조사)

  • Kim, Sung-Ae;Ji, Soon-Duk
    • The Journal of Korea Robotics Society
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    • v.6 no.4
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    • pp.365-372
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    • 2011
  • The purpose of this study is to improve robotics education in public education. This study was conducted with 157 secondary school teachers regardless of their gender, age and majors. The results are as follows: First, 68.2% of the respondents (81.2% of the STEM(Science, Technology, Engineering, Mathematics)-related teachers) thought that robotics education should be included in public education because it will be a very important area in the future. Second, 73.3% of respondents (89.3% of the STEM-related teachers) agreed that robotics education will be worth teaching as a regular subject. The most important reason was that they thought the robots would be an excellent tool to initiate their class participation and increase their study motivation. Third, the results from this survey showed that the technology teachers would be the best suitable instructors for robotics education. Lastly, teachers felt a great deal of burden to teach robotics although they thought robotics education was necessary. In order to implement robotics education in public school, teachers think it is necessary to take professional training. In addition, teachers should be supported with the reduction in their workload along with sufficient fundings, educational robots such as LEGO MINDSTORMS, and newly designed teaching materials.

A Multi-Sensor Module of Snake Robot for Searching Survivors in Narrow Space (협소 공간 생존자 탐색을 위한 뱀형 로봇의 다중 센서 모듈)

  • Kim, Sungjae;Shin, Dong-Gwan;Pyo, Juhyun;Shin, Juseong;Jin, Maolin;Suh, Jinho
    • The Journal of Korea Robotics Society
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    • v.16 no.4
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    • pp.291-298
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    • 2021
  • In this study, we present a multi-sensor module for snake robot searching survivors in a narrow space. To this end, we integrated five sensor systems by considering the opinions of the first responders: a gas sensor to detect CO2 gases from the exhalation of survivors, a CMOS camera to provide the image of survivors, an IR camera to see in the dark & smoky environment, two microphones to detect the voice of survivors, and an IMU to recognize the approximate location and direction of the robot and survivors. Furthermore, we integrated a speaker into the sensor module system to provide a communication channel between the first responders and survivors. To integrated all these mechatronics systems in a small, compact snake head, we optimized the positions of the sensors and designed a stacked structure for the whole system. We also developed a user-friendly GUI to show the information from the proposed sensor systems visually. Experimental results verified the searching function of the proposed sensor module system.

Hazardous Gas Detecting and Capturing Robot (유해가스 탐지·포집 로봇)

  • Shin, Juseong;Pyo, Juhyun;Lee, Meungsuk;Park, Sanghyun;Park, Seoyeon;Suh, Jinho;Jin, Maolin
    • Journal of Drive and Control
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    • v.19 no.2
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    • pp.27-35
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    • 2022
  • This study presents one man-portable, hazardous gas detecting and capturing robot. The robot can be fit in the trunk of a sedan car. Its weight is less than 20 kg. A dedicated gas intake mechanism is proposed for the robot. The robot can detect and capture gases at a height of 2 m above the ground, although the height of the robot is about 0.2 m. The performance of the gas intake mechanism is verified through computational fluid dynamics (CFD) analysis and experiments. Its gas detecting signals were acquired by serial communication and processed in Robot Operating System (ROS) based control software. The proposed robot can successfully move on rough terrains such as stairs, sand roads, and rock roads.

Design of Variable Release Torque-based Compliance Spring-clutch and Torque Estimation (가변 풀림 토크 기반 컴플라이언스 스프링 클러치의 설계 및 토크 추정)

  • Seok, Ju-Shin;Lee, Woo-Sub;Kang, Sung-Chul
    • The Journal of Korea Robotics Society
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    • v.11 no.1
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    • pp.26-32
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    • 2016
  • A variable release torque-based compliance spring-clutch (VCSC) is presented. VCSC is a safe joint to reduce the impact of collisions between humans and robots. It is composed of four functional plates, balls, springs to make some functions in compliant movement, release mechanism, gravity compensation during its work. Also, it can estimate torque applied to a joint by using distance sensor and parameters of cam profile. The measured variable torque of prototype is 4.3~7.6 Nm and release torque is 4.3 Nm. In our future studies, a calibration for torque estimation will be conducted.

Image Enhancement for Visual SLAM in Low Illumination (저조도 환경에서 Visual SLAM을 위한 이미지 개선 방법)

  • Donggil You;Jihoon Jung;Hyeongjun Jeon;Changwan Han;Ilwoo Park;Junghyun Oh
    • The Journal of Korea Robotics Society
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    • v.18 no.1
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    • pp.66-71
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    • 2023
  • As cameras have become primary sensors for mobile robots, vision based Simultaneous Localization and Mapping (SLAM) has achieved impressive results with the recent development of computer vision and deep learning. However, vision information has a disadvantage in that a lot of information disappears in a low-light environment. To overcome the problem, we propose an image enhancement method to perform visual SLAM in a low-light environment. Using the deep generative adversarial models and modified gamma correction, the quality of low-light images were improved. The proposed method is less sharp than the existing method, but it can be applied to ORB-SLAM in real time by dramatically reducing the amount of computation. The experimental results were able to prove the validity of the proposed method by applying to public Dataset TUM and VIVID++.

Development of a Vision-based Position Estimation System for the Inspection and Maintenance Manipulator of Steam Generator Tubes a in Nuclear Power Plant

  • Jeong, Kyung-Min;Cho, Jae-Wan;Kim, Seung-Ho;Kim, Seung-Ho;Jung, Seung-Ho;Shin, Ho-Chul;Choi, Chang-Whan;Seo, Yong-Chil
    • 제어로봇시스템학회:학술대회논문집
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    • 2003.10a
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    • pp.772-777
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    • 2003
  • A vision-based tool position estimation system for the inspection and maintenance manipulator working inside the steam generator bowl of nuclear power plants can help human operators ensure that the inspection probe or plug are inserted to the targeted tube. Some previous research proposed a simplified tube position verification system that counts the tubes passed through during the motion and displays only the position of the tool. In this paper, by using a general camera calibration approach, tool orientation is also estimated. In order to reduce the computation time and avoid the parameter bias problem in an ellipse fitting, a small number of edge points are collected around the large section of the ellipse boundary. Experiment results show that the camera calibration parameters, detected ellipses, and estimated tool position are appropriate.

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Emotional Robotics based on iT_Media

  • Yoon, Joong-Sun;Yoh, Myeung-Sook;Cho, Bong-Kug
    • 제어로봇시스템학회:학술대회논문집
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    • 2004.08a
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    • pp.804-809
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    • 2004
  • Intelligence is thought to be related to interaction rather than a deep but passive thinking. Interactive tangible media "iT_Media" is proposed to explore these issues. Personal robotics is a major area to investigate these ideas. A new design methodology for personal and emotional robotics is proposed. Sciences of the artificial and intelligence have been investigated. A short history of artificial intelligence is presented in terms of logic, heuristic, and mobility; a science of intelligence is presented in terms of imitation and understanding; intelligence issues for robotics and intelligence measures are described. A design methodology for personal robots based on science of emotion is investigated. We investigate three different aspects of design: visceral, behavioral, reflective. We also discuss affect and emotion in robots, robots that sense emotion, robots that induce emotion in people, and implications and ethical issues of emotional robots. Personal robotics for the elderly seems to be a major area in which to explore these ideas.

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R&D Trends of Intelligent Robotics on the Roadmap (국내외 기술로드맵을 통해 본 지능형로봇 기술개발의 동향)

  • Park, Hyun-Sub;Koh, Kyoung-Chul;Kim, Hong-Suck;Lee, Ho-Gil
    • The Journal of Korea Robotics Society
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    • v.2 no.1
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    • pp.103-108
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    • 2007
  • Intelligent Robot is considered as one of the Next Generation Growth Engine in many countries. The application fields are expected to be widen from 80's robotics for manufacturing to many applications such as military, space, medical, personal, etc. To reduce the R&D investment risk Technical Roadmap is prepared by Japan, Europe and Korea. In this paper, the technical Roadmap of the countries was analysed to get the idea of future of Robotics. Robotics is considered as one of solutions of future aged society. Robot can assist and company with elderly people in the near future. On the other hand, Robot is considered as a core technology of manufacturing competitive power. Industrial competitiveness also would be dependent on robot technology. Special Service robot has many application areas and each country has different target based on the situation. With the comparison of technical roadmap, we have suggested some ideas to improve Korea's roadmap.

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Modular and versatile platform for the benchmarking of modern actuators for robots

  • Garcia, Elena;Gonzalez-de-Santos, Pablo
    • Smart Structures and Systems
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    • v.11 no.2
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    • pp.135-161
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    • 2013
  • This work presents a test platform for the assessment and benchmarking of modern actuators which have been specifically developed for the new field and service robotics applications. This versatile platform has been designed for the comparative analysis of actuators of dissimilar technology and operating conditions. It combines a modular design to adapt to linear and rotational actuators of different sizes, shapes and functions, as well as those with different load capacities, power and displacement. This test platform emulates the kinematics of robotic joints while an adaptive antagonist-load actuator allows reproducing the variable dynamic loads that actuators used in real robotics applications will be subjected to. A data acquisition system is used for monitoring and analyzing test actuator performance. The test platform combines hardware and software in the loop to allow actuator performance characterization. The use of the proposed test platform is demonstrated through the characterization and benchmarking of three controllable impedance actuators recently being incorporated into modern robotics.