• Title/Summary/Keyword: Mobile Phone Sensor

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Study of iPhone Interface for Remote Robot Control Based on WiFi Communication (WiFi 통신 기반의 로봇제어를 위한 아이폰 인터페이스 연구)

  • Jung, Hah-Min;Kim, Dong-Hun
    • Journal of the Korean Institute of Intelligent Systems
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    • v.22 no.5
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    • pp.669-674
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    • 2012
  • This study presents the remote control of a mobile robot using iPhone based on Wi-Fi communication. The paper proposes the following set of user interfaces : acceleration mode, arrow touch mode, and jog-shuttle mode. To evaluate the proposed three interfaces, a virtual robot is controlled in a monitor to follow a referenced trajectory using iPhone. In simulation, the standard deviation and summed errors are analysed for showing good and weak points of the proposed three interfaces. The proposed interface replace an additional remote controller requiring cost with a cellular phone. Results of an experiment show that the proposed interfaces can be effectively used for remote robot control.

Development of a Simulator for a Mobile Robot Based on iPhone (아이폰 기반의 이동로봇 시뮬레이터 개발)

  • Kim, Dong Hun
    • Journal of the Korean Institute of Intelligent Systems
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    • v.23 no.1
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    • pp.29-34
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    • 2013
  • This study presents the remote control of a mobile robot using iPhone based on ad hoc communication. Two control interfaces are proposed to control a mobile robot using iPhone : Remote control by a user and autonomous control. To evaluate the effectiveness of algorithms for trajectory following, a simulator are developed where a virtual robot follows a referenced trajectory in a monitor by iPhone interface. In the proposed simulator, some algorithms are tested how they work well or not for trajectory following of a mobile robot. Comparative results by remote user control and autonomous control are shown. Results of an experiment show that the proposed simulator can be effectively used for testing the effectiveness of autonomous tracking algorithms.

A Study on the Calculation of the Number of Rescuers at Fire Sites Using Wireless Signals of Mobile Phones (화재 현장에서 휴대전화 무선 신호를 활용한 구조대원 투입 인원수 산출 연구)

  • Kim, Younghyun;Kim, Boseob;Lee, Sungwoo
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2021.10a
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    • pp.275-276
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    • 2021
  • In the event of a fire in a complex, the identification of isolated people's location information is delayed, resulting in many casualties. In order to prevent such an accident, research on estimating the location of the requesters by detecting the wireless signal of the mobile phone at fire sites is in progress. The main concept is to use a wireless signal scanner to detect the wireless signal of a mobile phones at fire sites, and then position the mobile phone based on this. However, it is difficult to secure visibility at the fire site due to the smoke, and there is a difficulty in rescuing requesters in need compared with general disaster sites. Therefore, it will be one of the important issues to be solved to determine the minimum number of rescuers to be deployed according to the number and condition of the requesters. In this study, we propose a method to calculate the number of rescuers put to fire sites by using the radio signal generated from mobile phones and the information generated from the inertial sensor of the mobile phones.

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Effect of Die Bonding Epoxy on the Warpage and Optical Performance of Mobile Phone Camera Packages (모바일 폰 카메라 패키지의 다이 본딩 에폭시가 Warpage와 광학성능에 미치는 영향 분석)

  • Son, Sukwoo;Kihm, Hagyong;Yang, Ho Soon
    • Journal of the Semiconductor & Display Technology
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    • v.15 no.4
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    • pp.1-9
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    • 2016
  • The warpage on mobile phone camera packages occurs due to the CTE(Coefficient of Thermal Expansion) mismatch between a thin silicon die and a substrate. The warpage in the optical instruments such as camera module has an effect on the field curvature, which is one of the factors degrading the optical performance and the product yield. In this paper, we studied the effect of die bonding epoxy on the package and optical performance of mobile phone camera packages. We calculated the warpages of camera module packages by using a finite element analysis, and their shapes were in good agreement showing parabolic curvature. We also measured the warpages and through-focus MTF of camera module specimens with experiments. The warpage was improved on an epoxy with low elastic modulus at both finite element analysis and experiment results, and the MTF performance increased accordingly. The results show that die bonding epoxy affects the warpage generated on the image sensor during the packaging process, and this warpage eventually affects the optical performance associated with the field curvature.

Design and Implementation of M2M-based Smart Factory Management Systems that controls with Smart Phone (스마트폰과 연동되는 M2M 기반 스마트 팩토리 관리시스템의 설계 및 구현)

  • Park, Byoung-Seob
    • Journal of the Korea Society of Computer and Information
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    • v.16 no.4
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    • pp.189-196
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    • 2011
  • The main issues of the researches are monitoring environment such as weather or temperature variation and natural accident, and sensor gateways which have mobile device, applications for mobile health care. In this paper, we propose the SFMS(Smart Factory Management System) that can effectively monitor and manage a green smart factory area based on M2M service and smart phone with android OS platform. The proposed system is performed based on the TinyOS-based IEEE 802.15.4 protocol stack. To validate system functionality, we built sensor network environments where were equipped with four application sensors such as Temp/Hum, PIR, door, and camera sensor. We also built and tested the SFMS system to provide a novel model for event detection systems with smart phone.

Study on Mobile Meteorological Information Services for Urban Area

  • Choi, Jin-Oh
    • Journal of information and communication convergence engineering
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    • v.9 no.1
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    • pp.64-68
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    • 2011
  • On the limited urban area, precise measurement of meteorological data is not easy for the cost problem. The facilities collecting the data require high installment costs. The mobile sources can be a solution in city region. For example, a public bus on which some meteorological sensors are installed can act as moving information gathering station. The information is gathered on a server and aggregated to generate useful information for smart phone application. To implement the services, several obstacles are exists. This paper studies on a design of this mobile meteorological information service system for urban area.

Smart Water Quality Sensor Platform For Hydroponic Plant Growing Applications

  • Nagavalli, Venkata Raja Satya Teja;Lee, Seung-Jun;Lee, Kye-Shin
    • Journal of Multimedia Information System
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    • v.5 no.3
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    • pp.215-220
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    • 2018
  • This work presents a smart water quality sensor for hydroponic plant growing applications. The proposed sensor can effectively measure pH level and electrical conductivity of the water solution. The micro-controller incorporated in the sensor processes the raw sensor data, and converts it into a readable format. In addition, through the mobile interface realized using a WiFi module, the sensor can send data to the web server database that collects and stores the data. The data stored in the web server can be accessed by a personal computer or smart phone. The prototype sensor has been implemented, and the operations have been verified under an actual hydroponic plant growing application.

Vital Sign Monitoring System with Routing and Query of Wireless Sensor Node on Mobile Environment (모바일 환경에서 질의응답이 가능한 무선센서노드 라우팅 생체신호 모니터링 시스템)

  • Lee, Seung-Chul;Toh, Sing-Hui;Do, Kyeong-Hoon;Chung, Wan-Young
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2008.10a
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    • pp.357-360
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    • 2008
  • Vital sign monitoring system using IEEE 502.IS.4 based wireless sensor network(WSN) is designed and developed on mobile environment and sensor node platform. WSN and CDMA are integrated to create a wide coverage to support various environments like inside and outside. We developed query processor to use selective any devices(ECG, Blood pressure and sugar module) and control of the self-organizing network of sensor nodes in a wireless sensor network. Vital sign from wireless medical any devices are analysed in cell phone first for real time signal analyses and the abnormal vital signs are sent and save to hospital server for detail signal processing. wireless signal traffic in wireless sensor network environment or data communication inside the cell phone is reduced.

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A Study on the Mobile Communication Network and Practical use of Smart Phone for Building of Realtime Location Based Reservation System (실시간 위치기반 예약시스템 구축을 위한 이동통신망과 스마트폰 최적 활용에 관한 연구)

  • Kang, Sin-Kwan;Lee, Jeong-Bae
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.12 no.1
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    • pp.283-294
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    • 2012
  • Recently increasing usage of smart phones so, the application field of convergence industry between IT technology using smart phone-based mobile communication networks and other industry branches is expanding. In addition, R&D technologies in other fields are applied to smart phone applications effectively in order to develop products and support daily life more convenient. However, it is very hard to control these products and there is no efficient solution for this problem when many people are sent to specific area for big events, such as Biennale, Film Festival, EXPO, and so on. In order to solve this problem, this paper describes a network-based ticket reservation system and its organization using augmented reality on smart phone and mobile communication networks. In particular, we propose a method of designing and developing prototyping system based on smart phone application design technologies, prior to developing real smart phone application.

The Design of Sensor System for Scalable Mobile Meteorological Information Services (확장 가능한 모바일 기상 정보 서비스를 위한 센서 시스템의 설계)

  • Choi, Jin-Oh
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.15 no.6
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    • pp.1327-1332
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    • 2011
  • In the mobile meteorological information services, an existing sensor system should be expanded to serve precise information. This is because of large cost problem to add the existing sensors. This thesis proposes a system architecture to construct scalable mobile meteorological information services and suggests mobile phone, sensor network, and public traffic vehicle as expended sensors. The proposed scalable sensors are compared each other and analysed the results to evaluated their strength and weakness. In this system, based on the characteristics of the sense data collected at server, a data processing methods are proposed to support efficient query processing. The proposing data processing methods have several benefits. They compress some data volume sensed by various sources on some area at some time to a logical unit. Still it could preserve same services quality.