• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.21 no.5
• /
• pp.1027-1034
• /
• 2017

Recently, OTP (One-time-Password) log-in methods have been used in many areas to prevent leakage of personal information and enhance security. The OTP method is primarily used for security of bank personal account, this is one of the sophisticated security ways in which one time password is generated and checked to enhance security. Digital door locks frequently used in everyday life require convenience and safety simultaneously. Meanwhile, related technologies for digital door locks are evolving, but methods for enhancement of security are still unsatisfactory. Generally, the digital door lock using password input type has been most commonly used and especially it provides more convenience, but it has some problems such as password exposure and password oblivion. Therefore, in this study, we propose and implement the OTP-based digital door lock system with enhanced security and convenience features but without the risk of password exposure and oblivion.

• Proceedings of the KAIS Fall Conference
• /
• 2001.05a
• /
• pp.151-154
• /
• 2001

우리 주변에서 쉽게 접할 수 있는 도어락 시스템(Door Lock System)을 기존의 열쇠방식이 아닌 자기카드(magnetic card)를 이용하여 이를 열쇠로 사용하는 것으로 누구든지 소지하고 있는 은행용 현금카드의 데이터를 비밀번호로 사용하는 방식의 도어락 시스템에 대해서 구현하였다. 또한 카드의 사용이 불가능할 때를 대비하여 4×4의 키패드를 이용하여 정해진 비밀번호를 입력하여 문을 열 수 있도록 제작하였다. 부가적인 주변장치로 도어락 시스템은 항상 동작하여야 하므로 오동작으로 인해 도어락 시스템이 작동하지 않을 경우를 대비하여 자동적으로 시스템을 초기화하도록 해서 정상적인 회로동작이 가능하게 하는 기능을 추가하였다.

• Smart Media Journal
• /
• v.6 no.1
• /
• pp.61-67
• /
• 2017

A large number of people living in modern times prefer remaining unmarried or living alone independently for the reason of their own will or another person's will. This is because they dislike being interfered with by other persons or because there is a financial problem. This behavior has become mainstream in persons working for professional jobs, persons having a strong disposition toward individual activity or college students. In particular, career women pursuing their own comfortable life have the tendency to prefer single life. However, sometimes, they become a target of crime that targets and makes bad use of this point. For these reasons. Consequently, sometimes, they additionally install and use a security system such as door security guard at front door and so on. It is not so difficult to lock the door security guard at the front door. However, it is apt to be forgotten. And when they are on the bedspread before falling asleep, in case they should check whether the door security guard is locked or in case they should lock it, they should get up, go to the entrance, and check and lock the door security guard. They often don't lock the door security guard due to their feeling that it is all right because of annoyance and inconvenience. This paper is intended to work for safety from crime such as illegal housebreaking by more conveniently using the door security guard after designing and implementing a system that can remotely control the door security guard, using a smartphone as a method of resolving this annoyance and keeping life more safe.

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• v.10 no.4
• /
• pp.1751-1767
• /
• 2016

Home security has become the prime concern for everyone in present scenario. In this work an attempt has been made to develop a home security system which is accessible, affordable and yet effective.The proposed system is based on 'Remote Embedded Control System' (RECS) which works both on the web and gsm platform for authentication and monitoring. This system is therefore cost effective as it relies on existing network infrastructure. As PCA is most popular and efficient algorithm for face recognition, it has been usedin this work. Next to it an interface has been developed for communication purpose in the embedded security system through the ZigBee module. Based on this embedded system, automated control of door movement has been implemented through electromagnetic door lock technology. This helps the users to monitor the real-time activities through web services/SMS. The web service consists of either web browser command or e-mail provision. The system establishes the communication between the system and authenticated user. The e-mail received by the system from the authorized person will monitor and control the real-time operation and door lock. The entire control system is reinforced using ARM1176JZF-S microcontroller and tested for actual use in the home environment. The result shows the experimental verification of the proposed system.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2016.10a
• /
• pp.305-306
• /
• 2016

In other areas, if the job or university or travel to other areas the firsth problem is Accommodation. When you get home to get around, There is no place to stay. Also of travelers want to Personal Space more than Space group. To solve this problem In this paper,It provides a house through a door lock that do not use the remote control system. The system provides a room that is available to users and can be controlled by setting the password to a remote door lock. In addition, by using the NFC provided a convenience so that the user can use forgotten the password. Information and reviews of the house were available to help you manage the cloud system.

• The Journal of the Korea institute of electronic communication sciences
• /
• v.13 no.1
• /
• pp.45-52
• /
• 2018

In this paper, we propose smart digital door lock system using heterogeneous communication. This system has efficient function using RF communication and Internet communication, and realizes access and real image of the passengers by combining camera control technology to secure original competitiveness with existing products. It uses the Internet of things and receive images to and from your smart-phone. And senses human behavior. In the simulated results, the image transmission rate of 90 % or more and the time required to transmit 10,000 images have an average transmission speed of 3 seconds. It is expected to secure competitiveness to increase the security of door lock in the future by enabling minimum security and fire monitoring service in real time.

• The KIPS Transactions:PartB
• /
• v.19B no.2
• /
• pp.127-134
• /
• 2012

Video digital door lock(VDDL) system detects people who access to the door and acquires the human image. Design considerations is that current consumption must be minimized by applying fast human detection algorithm because of battery-based operation. Since the digital door lock takes an image through a fixed camera, detection of a person based on background image leads to high degree of reliability. This paper deals with a single human detection algorithm suitable for VDDL with fulfilling these requirements such that it detects a moving object in an image, then identifies whether the object is a person or not using image processing. The proposed image processing algorithm consists of two steps: Firstly, it detects the human image region using both background image and skin color information. Secondly, it identifies the person using polar histogram based on proportional information of human body. Proposed algorithm is implemented in VDDL and is verified the performance through experiments.

• Journal of the Semiconductor & Display Technology
• /
• v.22 no.2
• /
• pp.72-76
• /
• 2023

The mobile card system used for mobile access control is connected to the door lock mounted on the door, enabling non-contact control. The RSSI (Received Signal Strength Indicator) of the BLE (Bluetooth Low Energy) communication packet used here can help to know the direction and distance of the mobile device. In this study, the desirable access control distance was calculated and implemented by setting the RSSI of the transmitter of the BLE packet used in mobile access control and processing the RSSI of the receiver.

• Journal of the Korean Institute of Intelligent Systems
• /
• v.25 no.6
• /
• pp.565-570
• /
• 2015

In this paper, we implemented the smart door lock system that control remotely devices using the concept of internet of things. Internet of things is intelligent system that can help devices to communicate with people and devices. And recently internet of things is getting attention because of advance of hardware technology and big data. The smart doorlock system based on internet of things used raspberry pi, sensor and doorlock. Using the smart phone, doorlock can be controlled from the raspberry pi server. And the user can identify some people that is in front of doorlock. also user can check around of doorlock in realtime using the raspberry pi camera.

• Proceedings of the KIEE Conference
• /
• 2000.07d
• /
• pp.3103-3105
• /
• 2000

본 논문은 RF/ID 카드를 이용한 도어락 시스템의 개발에 관한 것이다. 기존 기계적 도어락 시스템의 보안과 편리성을 도모하기 위해 전자식 도어락가 현재 널리 쓰이고 있다. 대부분의 도어락 시스템이 버튼식이지만 현재 RF/ID 카드를 많이 쓰는 추세이다. RF/ID카드는 비접촉식으로 보안성과 그 신뢰성이 뛰어나며 안테나 설계와 Tag의 특성에 따라서 그 통신 범위도 작게는 몇Cm에서 크게는 몇십m 까지 된다. 따라서 그 응용 범위 또한 광범위해서 사람. 개체. 물류등의 개체인식에 널리 쓰이고 있다. 본 논문은 이러한 RF/ID 카드를 소규모 도어락 시스템을 요구하는 가정, 또는 오피스텔과 같은 곳에서 쓰일 수 있는 도어락 시스템을 개발하였다.