• Title/Summary/Keyword: wireless remote

Search Result 771, Processing Time 0.036 seconds

Activation plan of social safety network of the aged living alone - Focused on the aged using wireless paging system in Gwangyang-si - (독거노인의 사회안전망에 대한 활성화 방안 - 광양시 무선페이징시스템 대상자 중심으로 -)

  • Lee, Jae-Min
    • The Korean Journal of Emergency Medical Services
    • /
    • v.13 no.3
    • /
    • pp.41-58
    • /
    • 2009
  • Objective : The purpose of this study is to identify actual operations and issues of wireless paging system operation for the aged living alone as the end users of wireless paging system primarily in Gwangyang city, and thereby to explore possible advanced and integrated ways to promote social safety network for the aged. Methods : The survey tool used in this study was a structured questionnaire form consisting of question items. The researcher hereof conducted this survey by means of direct visit and interview during two seasons, i.e. from February to August, 2008 and from December 2008 to March 2009, respectively. Results : 1) For general demographic characteristics, it was found that 90.9% of all respondents were women and 61.2% of all respondents were at age 75 to 84. for health conditions, it was found that more than 90% of all respondents often took medicines due to their unhealthy body, and most of respondents suffered from musculoskeletal diseases 79.3% and circulatory diseases 61.6%. for walking capacity, it was found that 45.5% of all respondents used walking aids, and disable respondents (11.5% of all respondents) were represented primarily by those with physical disability (52.6% of disable respondents). for actual use of medical institutions, it was found 47.3% of all respondents relied on local clinics, since they preferred neighborhood hospitals or clinics they can trust for medical care. for social activities and supports, it was found that 43.6% respondents had 'needs for assistance at times' and 33.9% respondents have 'no need for assistance'. And it was found that the major difficulties in living alone at old age were represented primarily by health problems 37.8% and economic difficulties 33.5%. 2) For characteristics related to wireless paging system, it was found that 90.3% respondents used wireless paging system recommended by firemen, and 28.5% respondents used this system. and it was found that 59.6% respondents used this system once, and 85.2% respondents used it because of acute or chronic diseases. more than 90% respondents thought that they knew about wireless paging system and considered themselves safe, but 83.6% respondents didn't attach a remote control on their upper clothes, and even 49.1% respondents turned off the power of wireless paging system due to their concern about electricity bill and noise. 3) It was found that 83.6% respondents felt it necessary to use wireless paging system, and wireless paging users felt more satisfied with using the system than non-users, and 50.7% showed high satisfaction at certain psychological benefits like 'confidence in coping with critical situations' and 'a sense of relief'. In addition, it was found that some respondents who answered that 'they didn't turn off the paging system as they knew how it works' and those who answered that they knew 'how to use it' showed relatively high satisfaction. And some respondents who kept it well and felt it necessary also showed high satisfaction. 4) It was found that the level of satisfaction our respondents felt with using wireless paging system varied significantly availability($x^{2}$ = 12.759, p = .002), psychological advantages($x^{2}$ = 12.174, p = .002), knowledge about how to use system($x^{2}$ = 7.021, p = .016), power on/off($x^{2}$ = 13.221, p = .001), level of knowledge about system($x^{2}$ = 21.002, p = .000), maintenance($x^{2}$ = 9.871, p = .007) and level of necessity($x^{2}$ = 34.939, p = .000) on the statistical basis.

  • PDF

A Study on the Efficiency Remote Code Update Scheme for Wireless Sensor Networks (무선 센서 네트워크를 위한 효율적인 원격코드설치 기법에 관한 연구)

  • Lee, Han-Sun;Lee, Jung-Min;Chung, Kwang-Sue;Choi, Woong-Chul;Rhee, Seung-Hyoung
    • Proceedings of the Korean Information Science Society Conference
    • /
    • 2005.11a
    • /
    • pp.217-219
    • /
    • 2005
  • 최근 무선 센서 네트워크01서 원격코드설치를 위한 신뢰적인 전송 프로토콜에 관한 연구가 활발히 진행되고 있다. 센서 네트워크는 한정된 에너지를 가지기 때문에 에너지 소모를 줄이기 위한 NACK 기반의 전송 프로토콜로 설계된다. 하지만, NACK 기반의 프로토콜은 패킷손실 이벤트 전달을 막기 위해 전송을 멈추고 에러복구를 하기 때문에 코드 전송시간을 증가시키게 되고 센서 네트워크의 수명을 줄이게 된다. 본 논문은 센서 네트워크에서 신속한 원격코드설치를 위친 NACK 억제 기법을 제안한다. 또한, ns-2 시뮬레이터를 이용한 실험을 통해 코드 전송시간이 제안된 기법에 의해 향상되었음을 확인하였다.

  • PDF

On the Implementation and Standardization of the Mobile Communication (모바일 통신의 구현과 표준안에 관한 연구)

  • Hong, Bong-Hwa;Lee, Ji-Young
    • The Journal of Information Technology
    • /
    • v.8 no.1
    • /
    • pp.1-10
    • /
    • 2005
  • We research and analyze to the IMT-2000, it contains the various problem with the bandwidth and standardization. Finally, we proposed to the method of the standardization and implementation for the Beyond IMT-2000, in this paper. Comparing the Beyond the IMT-2000 take advantage of the aspect of the GPS(global positioning system) service and remote medical treatment service and wireless internet service and VOD(Video on Demand) service with IMT-2000. Henceforth, we are consider to the development of the contents which it is adaptable to various environment.

  • PDF

VSAT Implementation for Wireless Remote Data Transmission (무선 원격 자료 전송을 위한 위성단말장치(VSAT) 개발)

  • Lee, Young-Woo;Oh, Seung-Hyueb
    • Proceedings of the KIEE Conference
    • /
    • 2008.04a
    • /
    • pp.178-179
    • /
    • 2008
  • 최근 들어 VSAT 시스템은 수요자의 필요에 의해 많은 기술발전을 가져왔다. 과거에는 저속의 데이터 통신 및 전화위주로 많이 사용되었으나 최근에는 통신량의 증가와 인터넷의 발달로 고속의 데이터통신 시스템으로 발전하고 있다.[1] 따라서 Application Service에 따라 기존의 TDMA 방식의 VSAT 시스템과 고속통신용의 DVB-RCS 시스템으로 양분되어 사용하고 있다. 기존의 TDMA 방식은 주로 SCADA, POS, VOICE 통신 등의 저속 데이터 통신 위주로 많이 사용하고 DVB-RCS 방식은 Multi Media 및 인터넷 서비스로 고속의 데이터 통신 용으로 많이 사용되고 있다. 이에 본 논문에서는 원격 무인 사이트가 Solar-Cell Battery를 이용하는 측면에서 소비전력 최소화 및 유지보수 편리성을 증대하기 위한 측면을 고려하여 무선 원격 자료 전송을 위한 VSAT 시스템 설계, 알고리즘 및 H/W제작을 소개하고자 한다.

  • PDF

Tele-Operated Mobile Robot for Visual Inspection of a Reactor Head

  • Choi, Chang-Hwan;Jeong, Kyung-Min;Kim, Seung-Ho
    • 제어로봇시스템학회:학술대회논문집
    • /
    • 2003.10a
    • /
    • pp.2063-2065
    • /
    • 2003
  • The control rod drive mechanisms in a reactor head are arranged too narrow for a human worker to approach. Moreover, the working environment is in high radiation area. In order to inspect defections in the surfaces of the reactor head and welding parts, a visual inspection device that can approach such a narrow and high radiation area is required. This paper introduces a tele-operated mobile robot for visual inspection of a reactor head, which has pan/tilt camera, fixed rear camera, ultrasonic collision detection system, and so on. Moreover, the host controller and digital video logging system are developed and integrated control software is also developed. The robot is operated by a wireless control, which gives flexibility for the inspection.

  • PDF

16 channel Loadcell measurement system development. (16 채널 로드셀 계측시스템 개발)

  • Jarng, Soon-Suck;Kim, Kyung-Suk;Won, Yong-Ill;Kim, Dae-Gon
    • Proceedings of the IEEK Conference
    • /
    • 2005.11a
    • /
    • pp.1055-1058
    • /
    • 2005
  • The present paper designed a weight measuring instrumentation system in which data conversion and a series of signal processing were totally equipped. 16 loadcell are incoming sensors and each output of the loadcell was amplified and filtered for proper analog signal processing. Several measuring instrumentation OP amps and general purposed OP amps were used. 12 bits A/D converters converted analog signals to digital bits and a PIC microprocessor controlled the 16 channels of loadcell. RF RS232 modules were used for wireless communication between the PIC microprocessor and an ethernet host for a remote sensor monitoring system development.

  • PDF

Trends in Immersive Giga Media Service Platform (몰입형 기가미디어 서비스 플랫폼 기술 개발 동향)

  • Choi, S.H.;Park, N.S.;Lee, H.K.;Ko, E.J.;Han, M.K.;Jang, J.H.
    • Electronics and Telecommunications Trends
    • /
    • v.32 no.5
    • /
    • pp.1-9
    • /
    • 2017
  • This study focuses on the ongoing immersive Giga Media service platform technology developed by the Electronics and Telecommunications Research Institute(ETRI) for various projects of the Giga KOREA Foundation[1] to achieve a smart ICT environment including wireless-based Giga service by 2020. This technology enables an immersive realistic Tele-Experience service that supports immersive real-world interaction as if sharing one's surroundings in a particular location through a high-speed network among remote users. It is expected to contribute greatly to the activation of smart ICT.

Design of an Intelligent Streetlight System in USN

  • Oh, Sun Jin
    • International Journal of Advanced Culture Technology
    • /
    • v.2 no.2
    • /
    • pp.1-6
    • /
    • 2014
  • In this paper, we propose an intelligent streetlight system that has a complex sensor module of temperature, humidity, luminance and motion detection and controlled by the fuzzy logic based central monitoring system in order to get flexible and precise manipulation of the streetlight system in USN environment. The proposed streetlight system provides low power consumption and high efficiency by using sensed data from the complex sensor module, which were collected, processed, and analyzed by the fuzzy logic based central monitoring system. The performance of the proposed streetlight system is to be evaluated by a simulation study in terms of power savings and safety at the fields constructed as a test-bed under several suggested scenarios. Finally, we know that the proposed intelligent streetlight system can maximize the energy savings efficiently with the fuzzy logic based central monitoring system and selective remote dimming control by connecting it to the wireless ubiquitous sensor network (USN) using a Zigbee module.

Intelligent Robot Control using Personal Digital Assistants

  • Jaeyong Seo;Kim, Seongjoo;Kim, Yongtaek;Hongtae Jeon
    • Proceedings of the Korean Institute of Intelligent Systems Conference
    • /
    • 2003.09a
    • /
    • pp.304-306
    • /
    • 2003
  • In this paper, we propose the intelligent robot control technique for mobile robot using personal digital assistants (PDA). With the proposed technique, the mobile rebot can trace human at regular intervals by the remote control method with PDA. The mobile robot can recognize the distances between it and human whom the robot must follow with both multi-ultrasonic sensors and PC-camera and then, can inference the direction and velocity of itself to keep the given regular distances. In the first place, the mobile robot acquires the information about circumstances using ultrasonic sensor and PC-camera then secondly, transmits the data to PDA using wireless LAN communication. Finally, PDA recognizes the status of circumstances using the fuzzy logic and neural network and gives the command to mobile robot again.

  • PDF

Transmission of Map Data of Location-Based Services in Mobile Environment

  • Han, Eun-Young;Choi, Hae-Ock
    • Proceedings of the KSRS Conference
    • /
    • 2003.11a
    • /
    • pp.676-678
    • /
    • 2003
  • Recently, in according as rapid improvement of telecommunication markets and wireless internet technology, Location- Based Services (LBS) have been discussed as new 'Killer' application. The purpose of LBS is to determine location of user through mobile handset and to offer location information service to end-user. This paper has suggested an efficient transmission scheme of maps data as one of the important content services relating to data transmission of LBS in mobile environment. The basic system consists of three parts : (1) GIS (Geographic Information System) Server for storing, processing and handling map data, (2) Middleware Server for transmitting of map data by request of client, and (3) Client for requesting map data to Server and displaying them on handset. Also, in order to transmit map data, we are to expand WKB (Well Known Binary) in conformance to Simple Feature Specification of OGC (Open GIS Consortium), and increase efficiency of data transmission by developing trans mission data format to be able to transmit lightweight data and considering data compression technology.

  • PDF