• Title/Summary/Keyword: Self-moving car

Search Result 10, Processing Time 0.025 seconds

A Design and Implementation of Control Application for Arduino Prime Smart Car

  • Park, Jin-Yang
    • Journal of the Korea Society of Computer and Information
    • /
    • v.21 no.11
    • /
    • pp.59-64
    • /
    • 2016
  • In this paper, we design and implement an Application based on android platform, which can control arduino Prime Smart Car using Bluetooth communication. This Application consist of Bluetooth communication module, manual mode module, and line-tracer mode module. In the Bluetooth communication module, it checks the on/off status of Smartphone Bluetooth. If Bluetooth status is off, it activates Bluetooth, selects the corresponding device from Bluetooth device list, and connects with a pair. In order to reduce coding time, we implements Bluetooth communication using inherited class from android Bluetooth package. In the manual mode module, it implements six direction moving button and stop button, which can control arduino Prime Smart Car. In the line-tracer mode module, it implements Prime Smart Car with self-driving function using TCRT5000 sensor. And moving button and stop button is disabled.

Analysis on Longitudinal Dose according to Change of Field Width (선속 폭(Field Width) 변화에 따른 종축선량 분석)

  • Jung, Won-Seok;Back, Jong-Geal;Shin, Ryung-Mi;Oh, Byung-Cheon;Jo, Jun-Young;Kim, Gi-Chul;Choi, Tae-Gu
    • The Journal of Korean Society for Radiation Therapy
    • /
    • v.23 no.2
    • /
    • pp.109-117
    • /
    • 2011
  • Purpose: To analyze the accuracy of tumor volume dose following field width change, to check the difference of dose change by using self-made moving car, and to evaluate practical delivery tumor dose when tomotherapy in the treatment of organ influenced by breathing. Materials and Methods: By using self-made moving car, the difference of longitudinal movement (0.0 cm, 1.0 cm, 1.5 cm, 2.0 cm) was applied and compared calculated dose with measured dose according to change of field width (1.05 cm, 2.50 cm, 5.02 cm) and apprehended margin of error. Then done comparative analysis in degree of photosensitivity of DQA film measured by using Gafchromic EBT film. Dose profile and Gamma histogram were used to measure degree of photosensitivity of DQA film. Results: When field width were 1.05 cm, 2.50 cm, 5.02 cm, margin of error of dose delivery coefficient was -2.00%, -0.39%, -2.55%. In dose profile of Gafchromic EBT film's analysis, the movement of moving car had greater motion toward longitudinal direction and as field width was narrower, big error increased considerably at high dose part compared to calculated dose. The more field width was narrowed, gamma index had a large considerable influence of moving at gamma histogram. Conclusion: We could check the difference of longitudinal dose of moving organ. In order to small field width and minimize organ moving due to breathing, it is thought to be needed to develop breathing control unit and fixation tool.

  • PDF

Future of Railways - in Open Systems?

  • Macheret, Dmitry A.
    • International Journal of Railway
    • /
    • v.5 no.4
    • /
    • pp.135-138
    • /
    • 2012
  • The article suggests criteria of dividing transport systems into systems of limited and open access. Possibilities of implementing principles of the open access in conjunction with the adaptive control at the railway transport have been analyzed. The author makes a grounded conclusion that the development of transport systems based on the open access and adaptive control can play a positive role in overcoming the global instability of the economy and form prerequisites of its stable grows.

Optical Camera Communication Based Lateral Vehicle Position Estimation Scheme Using Angle of LED Street Lights (LED 가로등의 각도를 이용한 광카메라통신기반 횡방향 차량 위치추정 기법)

  • Jeon, Hui-Jin;Yun, Soo-Keun;Kim, Byung Wook;Jung, Sung-Yoon
    • The Transactions of The Korean Institute of Electrical Engineers
    • /
    • v.66 no.9
    • /
    • pp.1416-1423
    • /
    • 2017
  • Lane detection technology is one of the most important issues on car safety and self-driving capability of autonomous vehicle. This paper introduces an accurate lane detection scheme based on OCC(Optical Camera Communication) for moving vehicles. For lane detection of moving vehicles, the streetlights and the front camera of the vehicle were used for a transmitter and a receiver, respectively. Based on the angle information of multiple streetlights in a captured image, the distance from sidewalk can be calculated using non-linear regression analysis. Simulation results show that the proposed scheme shows robust performance of accurate lane detection.

Characters on building floor of Japanese elderly house (일본 유료 노인홈의 건물 내 층별 실구성의 특성)

  • Rhee, Ji-Sook
    • Proceedings of the Korean Institute of Interior Design Conference
    • /
    • 2007.05a
    • /
    • pp.53-54
    • /
    • 2007
  • It is predicted that Japan will be in super-aged society at 2010. Recently elderly house buildings with self-supporting life and personal care senior house types have supplied over the area. So Elderly house buildings in Japan were studied for characters of room arrangement, through documents and internet from Jan. 2007 to Apr. 2007. Five cases built since 2000 were examined. There were self-supporting life house type, personal care senior house type, convenient facilities, etc. There were not lots of facilities in the building. Generally multi-purpose dining room and general bath room, lots for car and bicycle or restaurant or kindergarten or home helper station or green food shop or day service or moving service or clinic were there. These facilities were shared with local community. The reason of not being many facilities in the building was that the houses were located at urban with good transportation and convenient facilities. The residents in the building were get the utmost of regional facilities and the local people did the facilities in it because scare facilities in the building and fluent facilities in region. So strong community was composed of the residents and local people, on the contrary.

  • PDF

Map Matching Algorithm for Self-Contained Positioning (자립식 위치측정을 위한 Map Matching 알고리즘)

  • Lee, Jong-Hun;Kang, Tae-Ho;Kim, Jin-Seo;Lee, Woo-Yeul;Chae, Kwan-Soo;Kim, Young-Gi
    • Journal of Korean Society for Geospatial Information Science
    • /
    • v.3 no.2 s.6
    • /
    • pp.213-220
    • /
    • 1995
  • Map Matching is the method for correcting the current position from dead reckoning in Car Navigation System. In this paper, we proposed the new map matching algorithm that can correct the positioning error caused by sensors and digital map data around the cross road area. To do this, first we set the error boundary of the cross road area by combining the relative error of moving distance and the absolute error of road length, second, we find out the starting point of turning within the determined error boundary of the cross point area, third, we compare the turning angle of the car to the angle of each possible road, and the last, we decide the matched road. We used wheel sensor as a speed sensor and used optical fiber gyro as a directional sensor, and assembled the sensors to the notebook computer. We testified our algorithm by driving the Daejeon area-which is a part of south Korea-as a test area. And we proved the efficiency by doing that.

  • PDF

A Study on Welfare Vehicles for the User's of Wheelchair (휠체어 사용자를 위한 복지차량 연구-양산 차에 대한 휠체어 사용 탑승을 중심으로-)

  • 이호숭
    • Archives of design research
    • /
    • no.18
    • /
    • pp.123-134
    • /
    • 1996
  • For handicapped person who have a handicap in moving, vehicles are indispensible, especially in the viewpoint of handicapped person's participation for social life by rehabilitation, the freedom of movement equaling to nonnal person is a important factor for improving the quality in being complete growth.In the purposese of positively social participation of handicapped person, this study investigated the general problems about using a means of transportation in the users of wheelchair and for solving these problems and approached, in the viewpoint of styling, vehicles were considered from character of self-supporting in getting on and off a car. For that first, this study was progressed by suggesting invigorating convenience facilities in already established vehicles for the user of a wheelchair and the part of moulding of modified vehicles in a structure. Moreover, making a selection of domestic vehicles arbitrarily, analyzing a internal structure of a boarding of a wheelchair, and suggesting the modified model of vehicles by the sketch.

  • PDF

Influence of Self-driving Data Set Partition on Detection Performance Using YOLOv4 Network (YOLOv4 네트워크를 이용한 자동운전 데이터 분할이 검출성능에 미치는 영향)

  • Wang, Xufei;Chen, Le;Li, Qiutan;Son, Jinku;Ding, Xilong;Song, Jeongyoung
    • The Journal of the Institute of Internet, Broadcasting and Communication
    • /
    • v.20 no.6
    • /
    • pp.157-165
    • /
    • 2020
  • Aiming at the development of neural network and self-driving data set, it is also an idea to improve the performance of network model to detect moving objects by dividing the data set. In Darknet network framework, the YOLOv4 (You Only Look Once v4) network model was used to train and test Udacity data set. According to 7 proportions of the Udacity data set, it was divided into three subsets including training set, validation set and test set. K-means++ algorithm was used to conduct dimensional clustering of object boxes in 7 groups. By adjusting the super parameters of YOLOv4 network for training, Optimal model parameters for 7 groups were obtained respectively. These model parameters were used to detect and compare 7 test sets respectively. The experimental results showed that YOLOv4 can effectively detect the large, medium and small moving objects represented by Truck, Car and Pedestrian in the Udacity data set. When the ratio of training set, validation set and test set is 7:1.5:1.5, the optimal model parameters of the YOLOv4 have highest detection performance. The values show mAP50 reaching 80.89%, mAP75 reaching 47.08%, and the detection speed reaching 10.56 FPS.

Comparison & Analysis of Drones in Major Countries based on Self-Driving in IoT Environment (사물인터넷 환경에서 자율주행 기반의 주요국 드론 특성 비교/분석)

  • Lee, Dong-Woo;Cho, Kwangmoon;Lee, Seong-Hoon
    • Journal of Internet of Things and Convergence
    • /
    • v.6 no.2
    • /
    • pp.31-36
    • /
    • 2020
  • The remarkable change in the automobile industry, which is a traditional industrial field, is now evolving into a form of moving toward autonomous functions rather than humans due to various convenience functions and automatic driving or autonomous driving technologies if the person was central when driving the car. This situation is expanding to various industries such as the aviation industry and the drone market, as well as the robot market. The drone market in the aviation industry is being used in various fields due to the unmanned nature of drone operation. Among them, military drones are secret and due to the specificity of technology, details are not disclosed, but as a collection of advanced technologies, they have played a key role in drone development. In this study, the current status of China and the European Union, including the United States, which are major competitors in the drone field, was investigated, and the technologies of major countries were compared and analyzed through the characteristics and operational specifications of the drones currently in operation.

An Analysis of Referrals, Nursing Diagnosis, and Nursing Interventions in Home Care - Wonju Christian Hospital Community Health Nursing Service - (가정간호 기록지 분석 - 원주기독병원 가정간호 보건활동을 중심으로 -)

  • Suh, Mi-Hae;Huh, Hae-Kyung
    • Journal of Home Health Care Nursing
    • /
    • v.3
    • /
    • pp.53-66
    • /
    • 1996
  • Home Health Care is one part of the total health care system. It includes health care services that link the hospital to the community. While it is important for early discharge patients, home care is also important for people with chronic illnesses or handicapping conditions. In 1989 the Korean government passed a law that opened the way for formal development of home health care services beginning with education programs to certify nurses for home care, and then demonstration home care services. Part of the mandate of the demonstration projects was evaluation of home care services. This study was done in order to provide basic data that would contribute to the development of records that could be used for evaluation through a retrospective audit and to examine the care that had been given in Home Care at Wonju Christian Hospital over a twenty year period from 1974 to 1994. The purposes of the study were : to identify to characteristics of the clients who had received home care, to identify the reasons for client referrals, to identify the nursing problems of these clients, to identify the nursing care provided to these clients, and to identify differences in these areas over the twenty year period. The study was a descriptive study involving a retrospective audit of the client records. Demographic data on all clients were included : 4,171 clients from 2,564 families. Data on referrals, nursing diagnosis and nursing interventions were from even numbered records which had a patient problem list included in the record, 2,801 clients, Frequencies and ANOVA were used in the analysis. The results of the study showed that the majority of the clients were from Wonju city /county. There were more women than men related to the high number of postpartum clients(1,300). The high number of postparttum clients and newborns was also evident in the age distribution. An the number of maternal-child clients decreased over the 20 years, the mean age of the clients increased significantly. Other factors also contributed to this change ; as increasing number of clients with brain injuries or with cancer, and fewer children with burns, osteomyelitis and tuberculosis. There was a decrease in the mean number of visits and mean length of coverage, reflecting a movement towards a short term acute care model. The number of new clents dropped sharply after 1985. The reasons for this are : the development of other treatment alternatives for clients, the establishment of an active wellbaby clinic, many more options plus a decreasing number of new cases of Hansen's Disase, and insurance that allows people with burns to be kept in hospital until skin grafts are healed. Socioeconomic changes have resulted in an increase in the number of cases of cancer, stroke, head injuries following car accidents, and of diabetes. Of the 2,801 client records, 2,541(60.9%) contained a written referral but for 1,802 it contained only the medical diagnosis. The number of records with a referral requesting specific nursing care was 739(29.1%). Many family members who were identified as in need of nursing care had no written referral. Analysis of the patient problem list showed that 41.9% of the enteries were nursing diagnoses. Others incuded medical diagnosis, symptoms, and plans. The most frequently used diagnoses were alteration in nutrition, less than body requirements(115 entries), alteration in skin integrity(114), knowledge deficit(111), pain(78), self-care deficit(66), and alteration in pattern of urinary elimination(50). These are reflected in the NANDA categories for which the highest number of diagnosis was in the Exchanging pattern(446), followed by Moving(178), Feeling(136) and Knowing (115). Analysis of the frequency of interventions showed that exercise and teaching about exercise was the most frequent intervention, followed by teaching concering the need for follow-up care, checking vital signs, managing nutritional problems, managing catheters, giving emotional support, changing dressings, teaching about medication, teaching (subject not specified), teaching about diet, IM and IV medications or fluid, and skin care, in that order. Recommendations included: development of a record that would allow for efficient recording of frequently used nursing diagnoses and nursing interventions: expansion of the catchment area for Home Care at Wonju Christian Hospital ; expansion of the service to provide complication prevention, rehabilitation services, and support to increase the health maintenance /health promotion of the people being served as well as providing client dentered care ; and development of a clinical record that will allow efficient data collection from records, even though the recording is done by a variety of health care providers.

  • PDF