• Proceedings of the Korea Information Processing Society Conference
• /
• 2017.11a
• /
• pp.569-570
• /
• 2017

현재 가장 많이 사용되는 비밀번호 도어락 시스템은 외부 노출의 가능성 때문에 범죄의 위험성이 크다. 이러한 방식을 보완하기 위하여 안면 인식과 음성 인식 두 가지 기술을 결합하여 보안성을 높이는 기술을 구현하였다. 이에 본 논문은 아두이노를 사용하여 사람을 확인하고 인증하는 모듈인 보이저 모듈, 음성인식과 화자인식을 지원하는 아두이노와 그의 음성인식 모듈 Easy VR을 제시한다. 두 가지 기술의 결합으로 보안성을 높여 강력 범죄를 예방한다.

• The Journal of the Institute of Internet, Broadcasting and Communication
• /
• v.18 no.6
• /
• pp.91-97
• /
• 2018

This paper presents implementation possibilities of digital IoT doorlock systems via VLC(Visible Light Communication)'s color grid. The color grid-based VLC modulation scheme which are discussed in this paper utilize the straightness of light and abundant frequency resources which are the properties of the light. Performance results in this paper are compared to that of conventional modulations with Bit Error Rate (BER) and Signal to Noise Ratio (SNR) simulations. With respect to a channel model, the proposed modulation schemes select the nearest Line Of Sight (LOS) except Non Line Of Sight (NLOS). Experiments in this paper show error rates of received symbols by changing power dB at a distance of 3m between Tx and Rx in an indoor environment. Through performance results and experiments, this paper demonstrates superiority of the proposed color grid-based modulation schemes.

• Proceedings of the KIEE Conference
• /
• 2002.07d
• /
• pp.2500-2502
• /
• 2002

실시간으로 빠른 응답을 원하는 시스템에서 임베디드 시스템은 매우 적절한 요소가 되었으며 원격제어를 위해 네트워크를 이용한 연구가 많아지고 있다. 본 논문에서는 PC기반의 원격제어 시스템을 임베디드화 하고 여기에 실시간 운영체제를 이식하여 시스템의 안정성과 속도 면에서 우수한 시스템을 구현하려고 한다. 이를 위하여 임베디드 시스템인 상용의 EZBoard와 운영체제로 real time OS를 사용한다. 네트워크로는 통신 프로토콜은 TCP/IP를 이용하려고 한다. 나아가 이 시스템을 Doorlock 제어 시스템에 적용시키려고 한다.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2014.04a
• /
• pp.20-23
• /
• 2014

기존 사용되고 있는 디지털 도어락은 사용자의 편의에 중점을 두어 보안 측면에서는 매우 취약한 단점이 있다. 이에 본 논문은 카메라와 센서, 통신 모듈이 결합된 디지털 도어락과 중계기, 서버를 시스템화하여 도어락 설치장소 전방에서 접근하는 객체를 감지 및 인식하고 이미지와 문 열림 정보를 사용자의 스마트 디바이스로 전송해 주는 영상 디지털 도어락 시스템을 제안하고자 한다. 제안한 시스템은 실험 결과 대상거리 내에서 96~98%의 접근자 인식률과 사용 통신망에 따라 평균 약 17.1~23.9초의 전송시간이 소요되었다. 따라서 도어락 시스템 전방의 상황을 모니터링하여 실시간 보안 대응이 가능할 것으로 판단된다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2016.05a
• /
• pp.241-243
• /
• 2016

In the Past, Trend of car security was Physical Something like doorlock system, and The Generation did not have skills connecting External devices. Through Car Development is up, that trend of car security Changed Physical Security to Intelligence Security. This Changes give a chance to hackers to attack this system. This System use CAN(Controller Area Network) Protocol which have three vulnerabilities. First, ID Spoofing, Twice, D - Dos Attack, Third, Android Application Injected Modern cars have many ECU(Electronic Control Unit) to control devices like Engine ON/OFF, Door Lock Handling, and Controlling Handle. Because CAN Protocol spread signal using broadcast, Hackers can get the signal very easily, and Those often use Mobile devices like Android or IOS to attack this system. if bluetooth signal is spread wide, hackers get the signal, and analysis the bluetooth data, so then They makes certain data to attack ECU, they send the data to ECU, and control ECU installed car. so I suggest that I will prevent this attack to make Auth system and prevent this attack in end of Android.

• Journal of IKEEE
• /
• v.22 no.3
• /
• pp.723-728
• /
• 2018

This paper proposes a signal detection method for IoT door lock system which is a new application field of VLC (Visible Light Communication). This paper describes the signal detection technique for user recognition that needs to be overcome in order to apply VLC to door lock system which has a demand for new technology due to security issue. This system has security and high signal detection characteristics because it uses existing infrastructure to communicate with visible light. In order to detect the signal using FFT, the signal of the user who accesses the authentication channel based on the pilot signal is detected, and the performance of the false alarm probability and detection probability is shown in the channel model.

• 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.

• 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.