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전기이륜차용 NFC 기반 배터리 인증 시스템 개발 연구
노형태(HyeongTae Noh),김진현(JinHyun Kim) 한국자동차공학회 2022 한국자동차공학회 학술대회 및 전시회 Vol.2022 No.11
The Company and government are strengthening budget support and technology development for the supply of electric two-wheeled vehicles, while at the same time expanding battery exchange stations. Electric two-wheeled vehicles have limitations on the mileage depending on the battery capacity and condition, and this can be solved by charging the battery or replacing the battery. Electric motorcycle OEMs, battery station operators, delivery or shared platform companies, etc. must provide services such as optimal performance through battery tracking management, maintenance/repair, theft detection or damage prevention for drivers, and introduce battery authentication for this purpose. In this paper, we developed an NFC-based battery authentication system for an electric two-wheeled vehicle, made an operation scenario for battery authentication according to the NFC communication mode, and designed and implemented a battery authentication algorithm model. In addition, the authentication algorithm was verified in the actual test bed and vehicle environment, and after successful battery authentication and user authentication, it was confirmed that the vehicle is normally controlled. It is expected that this will be able to provide the effective operation and management of the battery.
모뎀을 활용한 전기이륜차용 데이터 서비스 운영 전략 및 보완점 도출
김진현(JimHyum Kim),노형태(HyeongTae Noh),김대우(DaeWoo Kim) 한국자동차공학회 2022 한국자동차공학회 학술대회 및 전시회 Vol.2022 No.11
Due to the electrification of vehicles, the data that can be collected from vehicles is increasing, and as the use of data is diversified, the importance of data services in vehicles is increasing. The same goes for electric two-wheelers, where the market continues to grow and develop. In this paper, the structure of data service using modem in electric motorcycles and data-related strategies are introduced, and complementary points are derived based on actual operation experience.
교환형 배터리를 활용한 전기삼륜차 전력분배 시스템 구성에 대한 연구
김재인(JaeIn Kim),곽인재(InJae Kwak),노형태(HyeongTae Noh),진실로(SilLo Jin) 한국자동차공학회 2022 한국자동차공학회 학술대회 및 전시회 Vol.2022 No.11
The transition to eco-friendly mobility is accelerating around the world based on the recent national-level pollution-free vehicle conversion policy and raising environmental awareness. In order to achieve carbon neutrality in 2050, a rapid response is required, and attention is focused on the trend of mobility in Asia, which emits large amounts of greenhouse gas in the transportation sector. Therefore, if we take the lead in the development of two-wheeled and three-wheeled vehicles, which are the main means of transportation in many countries in East and Southwest Asia and are the main targets of vehicle electrification policies, it will be an opportunity to preoccupy major markets. In this study, performance tests were conducted with different battery systems mounted on the same electric three-wheeled vehicle, and the results were compared and analyzed to find ways to improve marketability.
배터리 교환형 시스템에서 전기 차량의 전력 분배 제어에 대한 연구
진실로(Sillo Jin),곽인재(Injae Kwak),노형태(Hyeongtae Noh),김재인(Jaein Kim) 한국자동차공학회 2022 한국자동차공학회 학술대회 및 전시회 Vol.2022 No.11
It has been always an issue that charging the electric vehicle takes too much time unlike ICE vehicles. It is main reason slows down the transition from ICE vehicles to electric vehicles. To overcome this problem, Battery Swap Station, so-called BSS, has become most important platform in small vehicle markets like electric two-wheeler and three-wheeler. And, it is mandatory to standardize battery and to lower the weight of battery to manage BSS platform. Many corporation is on the process to launch various products within BSS platform. However, standardizing and lightening the battery forces electric vehicles to be low-powered to increase one-charge mileage. To operate high-powered electric vehicle like three-wheeler using BSS, connecting batteries in series and parallel can be solution. This research deals with what are the system components, pros and cons, and risks to connect battery pack in series and parallel, what are the solutions, what are verification and evaluation results of this vehicle….
2채널 High-side 스위치를 활용한 전기이륜차 방향지시등 고장 진단 기법
이준우(JunWoo Lee),백남철(NamChul Paik),노형태(HyeongTae Noh),진실로(SilLo Jin) 한국자동차공학회 2023 한국자동차공학회 학술대회 및 전시회 Vol.2023 No.11
A direction indicator lamp is an essential component not only automobile but also Wheeler to indicate to other roaddrivers that the driver intends to change a direction to the right or to the left. To drive safely, the direction indicator lamp should be operated accordingly when driver orders to operate it by setting direction indicator lamp’s switch ON. If the direction indicator lamp is in trouble, it should be informed with certain sound or display so that driver is to repair it. For that reason, the regulation of Wheeler requires when the failure of direction indicator lamp occurs the failure should be informed to driver with a certain pattern of sound or a displaying in cluster. Therefore, this study suggest a simple way to detect the failure of direction indicator lamp using High-side driver’s Sensing Current signal to detect the failure without installing any additional components or relay.
곽인재(Injae Kwak),김상훈(SangHoon Kim),노형태(HyeongTae Noh) 한국자동차공학회 2023 한국자동차공학회 학술대회 및 전시회 Vol.2023 No.11
Electrical two wheeler have become familiar in our daily life world widely these days to reduce a carbon emission and global warming issue. ISO 26262 is an international standard for functional safety in the automotive industry. The standard applies to electrical and electronic systems consisting of hardware and software components in vehicles and development process to maintain vehicle lifecycle. This topic have been highly recommended on the electrical two wheeler to avoid hazard of the high voltage system to protect driver and pedestrian but also for the safety on the system. The framework of functional safety should need to duplexing design on the hardware to monitor system conditions. In this paper, we have focus on the concept design of functional safety for the conventional electrical two wheeler system with application software in vehicle control unit. The control of vehicle behavior and coordination control with other control units through brake and throttle signal and several digital switches. This study is the first step of functional safety system for the electrical two wheeler.
온 디바이스 AI 기반 주행 환경 인식을 이용한 퍼스널 모빌리티 안전 제어 연구
강수혁(Soohyeok Kang),김근수(Geunsu Kim),박규도(Gyudo Park),노형태(Hyeongtae Noh),변세희(Sehee Byun) 한국자동차공학회 2022 한국자동차공학회 학술대회 및 전시회 Vol.2022 No.11
In this paper, we propose a method for recognizing the current driving environment and limiting the moving speed. For environment recognition, an on-device AI system using a smartphone’s camera and gps are configured. The recognized result is transmitted to mobility through bluetooth communication. In mobility, the logic that controls driving speed through torque control was designed according to the recognition result. Since this system has limited computing resources, it is necessary to use model compression techniques such as quantization or pruning to reduce the computational load while maintaining the performance of the AI model. So the trained model was quantized into types float16, int8, and full int8. The inference performance of quantized model was evaluated and applied on the CPU, GPU, and NPU of Samsung’s Galaxy S22 Ultra smartphone. Also, we tested the proposed method in the actual mobility system using the MOBILGO of the Hyundai KEFICO’s electric two-wheeled vehicle system.