• 제목/요약/키워드: Sensor configuration

검색결과 479건 처리시간 0.022초

Redesigning Taguchi Sensor

  • Hossein-Babaei Faramarz;Park, Won-Kyu
    • 한국세라믹학회지
    • /
    • 제42권1호
    • /
    • pp.11-15
    • /
    • 2005
  • The configuration of the main components and the physical structure of the Taguchi sensor, the first ceramic gas sensor mass produced, has remained virtually unaltered since its appearance 40 years ago. This device owns an excellent combination of the quality factors but is non-selective. The research efforts carried out to enhance the selectivity in this resistive gas sensor are briefly reviewed. A novel design, Capillary-attached Gas Sensor (CGS), is introduced, which employs the same ceramic components used for the fabrication of a classical Taguchi sensor but in altered geometries. CGS presents remarkable advantages from the view point of selectivity over the original design. While the steady state response of a CGS has the same significance as that of the Taguchi sensor, its transient response presents valuable diagnostic information. Fabrication and test of a prototype CGS is reported.

Obstacle Avoidance and Lane Recognition for the Directional Control of Unmanned Vehicle

  • Kim, Chang-Man;Moon, Hee-Chang;Kim, Sang-Gyum;Kim, Jung-Ha
    • 제어로봇시스템학회:학술대회논문집
    • /
    • 제어로봇시스템학회 2002년도 ICCAS
    • /
    • pp.34.6-34
    • /
    • 2002
  • 1. Introduction 2. System Configuration 2.1 Control System 2.1.1 Longitudinal control 2.1.2 Lateral control 2.2 Sensor System 2.2.1 Photo interrupt 2.2.2 Ultrasonic sensor 2.3 Vision system 2.4 Communication system 2.4.1 Data communication 2.4.2 Image Communication 3. Test and Result 3.1 Vision test 3.2 Ultrasonic sensor test 4. Conculsion. Acknowledgment References.

  • PDF

Pd가 코팅된 광섬유 센서를 이용한 수소 검출 시스템 (Hydrogen detection system based on Pd coated fiber sensor)

  • 박선옥;박규하;양병철;김광택;김태언;김회종;백세종;임기건
    • 한국광학회:학술대회논문집
    • /
    • 한국광학회 2007년도 하계학술발표회 논문집
    • /
    • pp.347-348
    • /
    • 2007
  • We have implemented a hydrogen detection system based on a Pd coated fiber sensor. The configuration of the system and the characteristics of the hydrogen sensor was presented.

  • PDF

능동기기 무선센터 모니터링 시스템 구축에 관한 기초연구 (A basic study of wireless sensor monitoring system configuration for active machinery)

  • 박창대;임병주;이후락;최봉우;황성재;정경열
    • 한국마린엔지니어링학회:학술대회논문집
    • /
    • 한국마린엔지니어링학회 2012년도 전기공동학술대회 논문집
    • /
    • pp.119-120
    • /
    • 2012
  • In the various industry plant, it need a condition monitoring system for an active machine that used an detachable wireless sensors. In this paper, IEEE802.15.4 standard based detachable wireless sensor monitoring system configure results will be introduced.

  • PDF

STUDY ON A CONTACT TYPE SENSOR FOR DETECTING HEIGHT FROM GROUND SURFACE

  • J. K. Ha;Lee, J. Y.;Park, Y. M.;Kim, T. S.
    • 한국농업기계학회:학술대회논문집
    • /
    • 한국농업기계학회 2000년도 THE THIRD INTERNATIONAL CONFERENCE ON AGRICULTURAL MACHINERY ENGINEERING. V.II
    • /
    • pp.178-187
    • /
    • 2000
  • The tillage operation by rotary implements is widely done in Korea. In the case of rotary implements, the tillage depth control system is one of important implement control systems. A contact type-sensor for measurement of the ground height was designed and fabricated to evaluate the possibility of application of the sensor on the tillage depth control system. Indoor experiments were conducted to obtain static and dynamic detection characteristics of the sensor under various conditions; 1) several moisture contents for four soil samples, 2) two soil surfaces with a designed configuration, 3) four heights of the sensor from the soil surface, 4) five traveling speeds of the carrier on which the sensor was attached, and so on. The experimental results showed the detection characteristics of the sensor sufficient as the ground height sensor of the tillage depth control system.

  • PDF

디바이스 센싱 단계의 IoT 네트워크 보안 기술 프레임워크 구성 (A Study of Phase Sensing Device IoT Network Security Technology Framework Configuration)

  • 노시춘;김점구
    • 융합보안논문지
    • /
    • 제15권4호
    • /
    • pp.35-41
    • /
    • 2015
  • 사물인터넷은 정보보안 위협에 노출되는 취약성을 광범위하게 가지고 있다. 그러나 이에 대처할 기본적 보안솔루션인 백신이 없고 데이터 전송에 암호화를 하지 않는다. 안전한 무선 센서 네트워크 환경의 구축을 위하여 노드 간에 전송되는 메시지를 암호화 및 인증이 요구된다. 센서 네트워크의 제약 조건 및 보안 요구사항을 만족시키기 위하여, 센서 환경에 적합한 경량 암호 및 인증기술, 경량 키 관리 기술이 요구된다. 센서 네트워크 보안기술의 필수항목은 프라이버시 보호 기술 부 채널 공격 방지, 기술이다. 안전한 무선 센서 네트워크 환경의 구축을 위하여 노드 간에 전송되는 메시지를 암호화하고 인증하는 것이 중요하다. 네트워크상에 존재하는 노드들을 안전하게 탐지할 수 있도록 lightweight 침입 탐지 메커니즘 기능을 적용해야 한다. 사람이 관여하지 않는 센서 노드는 단말의 진위파악 인증 기술, 체계가 필요하다. 사물인터넷환경에서 네트워크 보안 기술은 단말기와 센서 간 커뮤니케이션 채널의 안전성을 강화하는 기술이 중심이 되어야 한다.

형상계수와 태양추적장치를 이용한 헬리오스타트 제어 시스템 개발 (Development of Optimal Control of Heliostat System Using Configuration Factor and Solar Tracking Device)

  • 이동일;전우진;백승욱
    • 대한기계학회논문집B
    • /
    • 제36권12호
    • /
    • pp.1177-1183
    • /
    • 2012
  • 본 연구의 목적은 형상계수와 태양추적장치를 이용하여 헬리오스타트에서 흡수기로 복사열전달이 최대화 될 수 있는 시스템을 개발하는 것이다. 헬리오스타트에서 타워 상단에 위치한 흡수기로의 열전달은 대부분 복사에 의해 일어나기 때문에, 복사 열전달에서 사용되는 형상계수를 헬리오스타트 제어에 이용하였다. 태양 추적 및 태양 위치 계산은 CdS 센서와 시뮬링크 프로그램을 이용하였다. 시뮬링크 프로그램을 이용하여 실시간으로 헬리오스타트, 흡수기, 태양 사이의 형상계수가 최대화되는 알고리즘을 적용함으로서, 헬리오스타트에서 흡수기로의 복사 열전달이 최대화 될 수 있도록 하였다. 또한 다양한 조건에 따른 헬리오스타트 제어에 필요한 각을 시뮬레이션 함으로서 각 조건에 필요한 각을 도출할 수 있었다.

Design of an Absolute Location and Position Measuring System for a Mobile Robot

  • Kim, Dong-Hwan;Park, Young-Chil;Hakyoung Chung
    • Journal of Mechanical Science and Technology
    • /
    • 제15권10호
    • /
    • pp.1369-1379
    • /
    • 2001
  • This paper focuses on a development of a sensor system measuring locations of a vehicle to localize a mobile robot while it tracks on the track (location sensor) . Also it focuses on a system configuration identifying the vehicle's orientation and distance from the object while it is stationary at certain station (position sensor) . As for the location sensor it consists of a set of sensors with a combined guiding and counting sensor, and an address-coded sensor to localize the vehicle while moving on the rail. For the position sensor a PSD (Position Sensitive Device) sensor with photo-switches sensor to measure the offset and orientation of the vehicle at each station is introduced. Both sensor systems are integrated with a microprocessor as a data relay to the main computer controlling the vehicle. The location sensor system is developed and its performance for a mobile robot is verified by experiments. The position measuring system is proposed and is robust to the environmental variation. Moreover, the two kinds of sensor systems guarantee a low cost application and high reliability.

  • PDF

레이저-비전 센서를 이용한 Autonomous Robot Kinematic Calibration (Autonomous Robot Kinematic Calibration using a Laser-Vision Sensor)

  • 정정우;강희준
    • 한국정밀공학회지
    • /
    • 제16권2호통권95호
    • /
    • pp.176-182
    • /
    • 1999
  • This paper presents a new autonomous kinematic calibration technique by using a laser-vision sensor called "Perceptron TriCam Contour". Because the sensor measures by capturing the image of a projected laser line on the surface of the object, we set up a long, straight line of a very fine string inside the robot workspace, and then allow the sensor mounted on a robot to measure the point intersection of the line of string and the projected laser line. The point data collected by changing robot configuration and sensor measuring are constrained to on a single straght line such that the closed-loop calibration method can be applied. The obtained calibration method is simple and accurate and also suitable for on-site calibration in an industrial environment. The method is implemented using Hyundai VORG-35 for its effectiveness.

  • PDF