• Title/Summary/Keyword: PDA(Portable device)

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Development of a Portable Device based on PDA for Vibration Signal Analysis (PDA 기반 포터블 진동 신호 분석기 개발)

  • 김동준;박광호;기창두
    • Journal of the Korean Society for Precision Engineering
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    • v.19 no.12
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    • pp.179-184
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    • 2002
  • In this study, we developed a portable device which can monitor and analyze vibration signals from machines. This system consists a PDA loading the program for vibration analysis and A/D board for vibration acquisition. A PDA is smaller than the palm of the hand, but it has a powerful computing ability as much as an IBM compatible PC with a Pentium 100MHz CPU. The A/D board developed in this study supports LAN interface using TCP/IP communication protocol. The application program for vibration analysis includes signal processing module, fault diagnosis module, data store module, and plot display module. MS visual embedded C++ 3.0 was used to developed the program.

Development of a Portable Device for Vibration Signal Analysis Based on Windows CE (Windows CE 기반 포터블 진동 신호분석기 개발)

  • 김동준;박광호;기창두
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 1997.10a
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    • pp.253-256
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    • 1997
  • In this study, we developed a portable device which monitors and analyzes a vibration signal happened to machines. This device is based on PDA which is smaller thant a palm of the hand, but it has powerful computing ability as much s a computer with 100MHz CPU and an operating system called Windows CE. As a preprocess for a diagnosis of a rotating machine, training artificial neural network based on PC is performed, and the device will diagnose the condition of a rotating machine using weight values as a result of the training ANN.

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The Design and Implementation of Java Application in KVM on Real-Time Operating System, iRTOS (실시간 운영체제 iRTOS 상에서의 KVM기반 자바 응용프로그램 설계 및 구현)

  • Lee, jin-wook;Kim, jong-jin;Lee, cheol-hoon
    • Proceedings of the Korea Contents Association Conference
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    • 2009.05a
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    • pp.833-838
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    • 2009
  • Recently the use of the portable device like a PDA or a Smart-Phone increases to follow, Java technology that support Platform Independence on Hardware Flatform has become core Flatform in Software sphere. Especially Portable device use a KVM(Kilobyte Virtual Machine) of Java's various specification. In this paper, we design and implement Java Game Application for verification of KVM and verify on Real-Time Operating System iRTOS.

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Implementation of Power Management System for Smart device for the prevention of missing child (미아방지용 스마트 디바이스를 위한 전력 관리 시스템 구현에 관한 연구)

  • Kim, Yuongl-Gil;Kang, Suk-Bum
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2007.10a
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    • pp.493-496
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    • 2007
  • As the ubiquitous society period has set in recently, which resulted from both mass distribution of portable devices such as PDA, PMP, Smart Phones, the demand for more optional features of system and multimedia functions has been increasing. In compliance with thoses needs, the amount of information increased in a system and greater power capacities are needed more than ever. Therefore, in portable device which uses battery as a limited source of power, the power management has become a key factor in the system. This paper concentrates on the Power management solution for Smart device for the prevention of missing child. And ARM9 Core was used as CPU and Windows CE 5.0 was ported to the smart device.

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A portable electronic nose (E-Nose) system using PDA device (개인 휴대 단말기 (PDA)를 기반으로 한 휴대용 E-Nose의 개발)

  • Yang, Yoon-Seok;Kim, Yong-Shin;Ha, Seung-Chul;Kim, Yong-Jun;Cho, Seong-Mok;Pyo, Hyeon-Bong;Choi, Chang-Auck
    • Journal of Sensor Science and Technology
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    • v.14 no.2
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    • pp.69-77
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    • 2005
  • The electronic nose (e-nose) has been used in food industry and quality controls in plastic packaging. Recently it finds its applications in medical diagnosis, specifically on detection of diabetes, pulmonary or gastrointestinal problem, or infections by examining odors in the breath or tissues with its odor characterizing ability. Moreover, the use of portable e-nose enables the on-site measurements and analysis of vapors without extra gas-sampling units. This is expected to widen the application of the e-nose in various fields including point-of-care-test or e-health. In this study, a PDA-based portable e-nose was developed using micro-machined gas sensor array and miniaturized electronic interfaces. The rich capacities of the PDA in its computing power and various interfaces are expected to provide the rapid and application specific development of the diagnostic devices, and easy connection to other facilities through information technology (IT) infra. For performance verification of the developed portable e-nose system, Six different vapors were measured using the system. Seven different carbon-black polymer composites were used for the sensor array. The results showed the reproducibility of the measured data and the distinguishable patterns between the vapor species. Additionally, the application of two typical pattern recognition algorithms verified the possibility of the automatic vapor recognition from the portable measurements. These validated the portable e-nose based on PDA developed in this study.

Design and Implementation of the DRM Supporting Smart Multimedia Streaming in Ubi-Home (Ubi-Home에서의 지능적 멀티미디어 스트리밍을 지원하는 DRM 설계 및 구현)

  • Park Jong-Hyuk;Lee Sang-Jin;Hong In-Hwa;Ahn Tae-Won;Lee Deok-Gyu
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.31 no.3C
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    • pp.293-301
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    • 2006
  • In this paper, we design and implement the UHSNS-DRM(Ubi-Home Smart Multimedia Streaming-Digital Right Management) in Ubi-Home. The proposed system support flexible distribution platform for digital content copyright protection and management in Ubi-Home. This system also can provide multimedia streaming service to authorized users who are using PC, STB, PDA, and Portable Device, etc. Furthermore, we adopt concept of domain authentication and it help to improve the efficiency of license management for all devices in Ubi-Home. We design user's location recognition algorithm in order to provide intelligent services. Of course, this algorithm is applied for the proposed system. Start after striking space key 2 times.

Development of a Bone Conduction Vibrator for Portable Acoustic Device (휴대음성장치용 골도 진동자 개발)

  • Kim, Kwang-Suk;Bang, Ki-Chang;Hwang, Gun-Yong;Hwang, Sang-Moon
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2008.04a
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    • pp.613-617
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    • 2008
  • One of the important parts on multimedia era is acoustic ones. With increased demand of smallest multimedia products such as personal digital assistant (PDA) and mobile phones, it is necessary to develop acoustic devices which have higher performance and smaller size. Acoustic parts with various function for hearing impaired persons. This paper introduces a bone conduction vibrator (BCV) for hearing impaired persons to use portable acoustic device without additional devices. For vibration analysis of the BCV, electromagnetic, mechanical and their coupling effects are considered for the analysis. This paper shows that the development of design and analysis technique by finite element method (FEM) of BCV.

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Research on Vehicle Diagnostic and Monitoring technology Using WiBro Portable Device (와이브로 휴대기기를 사용한 차량진단 및 모니터링 기술에 관한 연구)

  • Ryoo, Hee-Soo;Won, Yong-Gwan;Park, Kwon-Chul;Ahn, Yong-Beom
    • Journal of the Institute of Electronics Engineers of Korea TC
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    • v.47 no.10
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    • pp.17-26
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    • 2010
  • This is concerned with the technology to monitor the vehicle operation, failure and disorder by using WiBro portable device. More precisely, the technology makes it possible that the information collection device is connected to both ECU(Electronic Control Unit) which is the device for controlling engine, transmission, brake, air-bag, etc that are connected to in-vehicle network and OBD-II connector that is for data collection from various sensors. In addition, with a WiBro portable device (cell phone, PDA, PMP, UMPC, etc). equipped with a vehicle diagnostic programs, information for operation, failure and malfunction can be obtained and analyzed in real-time, and alarm is alerted when the vehicle is in abnormal status, which makes the early reactions to the status. Furthermore, the collected data can be sent through WiBro network to the server managed by the company specialized in managing the vehicles, thus the technology could help the drivers who have less knowledge about their auto-vehicles have safe and economic driving. There is always a possibility of malfunction due to various types of noise that are caused by wring-harness when the device is wired-connected. In this research, in order to overcome this problem, we propose a system configuration that can do monitoring and diagnosis with a device for collecting data from vehicle and a personal WiBro device. Also, we performed research on data acquisition and interlock for the system defined by the definition for information and data sharing platform.

Bio-Signal Acquisition System Using Mobile Device (휴대용 개인 정보 단말기를 이용한 생체신호 획득 시스템)

  • Kim Hyung-Bae;Kwon Man-Jun;Cha Eun-Jong;Chun Myung-Geun
    • Journal of the Korean Institute of Intelligent Systems
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    • v.15 no.3
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    • pp.349-354
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    • 2005
  • In this paper, we propose a mobile telemedicine system that acquires more easily and analyzes individual's bio-signal using PDA. It is not easy for modern people who live busily, disabled patients, or old people to visit hospital. The major goal of this study is to implement the mobile telemedicine systems that the captured bio-signal from remote hospital or other medical treatment device is transmitted via Bluetooth module in ubiquitous environment, PDA with built-in Bluetooth module receives its data and displays on the screen in various form. By implemented systems, it is possible to compare current bio-signal with historical bio-signal and analyze bio-signal, and it is able to make a self diagnosis and it is available to be examined and treated remote diagnosis by sending stored bio-signal to a medical doctor.

Design of Zigbee based Portable ECG monitoring system (지그비 기반의 휴대형 심전도 모니터링 시스템 설계)

  • Hong, Joo-Hyun;Kim, Nam-Jin;Cha, Eun-Jong;Lee, Tae-Soo
    • Proceedings of the KIEE Conference
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    • 2006.04a
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    • pp.51-53
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    • 2006
  • This paper proposes a portable ECG monitoring system, which integrates uptodate PDA and RF communication technology. The aim of the study is to acquire the subject's biomedical signal without any constraint. It has two types of transmission mode, which are total signal transmission mode and HR(heart rate)/SC(step count) transmission mode. In audition, wireless communication technology uses Zigbee Wireless PAN and can work in low-power mode, which is one of the advantages of ZiBbee communication technology. The developed system is composed of a transmitter and a receiver. The transmitter has three-axial acceleration sensor. ECG amplifier and Zigbee communication controller. In total signal transmission mode, it can send data 50 packets per second whose transmission speed corresponds to 300 ECG samples and 60 acceleration samples. In HR/SG transmission mode, it can calculate heart rate from EEG data with 216 samples per second and step count from acceleration data and send a packet every cardiac cycle. The receiver forwards the received data to PDA, where the data can be stored and displayed. Therefore, the developed device enables to continuous monitoring for Activities of Daily Living(ADL). Also, this method will reduce medical costs in the aged society.

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