Wyniki wyszukiwania - Biblioteka Nauki

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Safety problems in vehicles with adaptive cruise control system

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Yadav A. K. , Szpytko J.

Journal of KONBiN

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2017

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tom No. 42

389--398

EN

In today’s world automotive industries are still putting efforts towards more autonomous vehicles (AVs). The main concern of introducing the autonomous technology is safety of driver. According to a survey 90% of accidents happen due to mistake of driver. The adaptive cruise control system (ACC) is a system which combines cruise control with a collision avoidance system. The ACC system is based on laser and radar technologies. This system is capable of controlling the velocity of vehicle automatically to match the velocity of car, bus or truck in front of vehicle. If the lead vehicle gets slow down or accelerate, than ACC system automatically matches that velocity. The proposed paper is focusing on more accurate methods of detecting the preceding vehicle by using a radar and lidar sensors by considering the vehicle side slip and by controlling the distance between two vehicles. By using this approach i.e. logic for calculation of former vehicle distance and controlling the throttle valve of ACC equipped vehicle, an improvement in driving stability was achieved. The own contribution results with fuel efficient driving and with more safer and reliable driving system, but still some improvements are going on to make it more safe and reliable.

PL

Obecnie w koncepcji autonomicznych pojazdów typu AVS (ang.: Autonomous Vehicles) poszukuje się możliwości skutecznego polepszenia bezpieczeństwa w ruchu drogowym. Według różnych źródeł ocenia się, że około 90% wypadków w ruchu drogowym jest skutkiem błędu kierowcy. Znane obecnie rozwiązania typu ACC (ang.: Adaptive Cruise Control), ICC (ang.: Intelligent Cruise Control) mają za zadanie utrzymanie bezpiecznej pozycji pojazdu na pasie w odniesieniu do innych użytkowników ruchu, w rezultacie odpowiednich sterowań parametrami użytkowymi pojazdu. Przedmiotem artykułu jest opracowanie koncepcji poprawionego modułu identyfikacji pojazdów poprzedzających i jadących w kolumnie, z użyciem czujników radarowych i lidarów, pozwalających na uwzględnianie możliwego poślizgu bocznego pojazdu, przy zachowaniu kontroli odległości pomiędzy pojazdami. W rezultacie przeprowadzonych badań możliwa jest poprawa stabilności jazdy pojazdu, skutkująca efektywniejszym zużyciem paliwa przez pojazd, poprawą niezawodności systemu napędowego.

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Advanced communication system: for the survey of rail tracks to improve safety of rail transportation

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Yadav A. K. , Szpytko J.

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tom Vol. 24, No. 2

315--322

EN

Railway transportation is a backbone of any country for transporting people and cargo. At present Indian railway is the largest network in Asia. So that safety is always big concern. Here in this article low cost railway track surveillance and monitoring system is proposed which will identify drastic and minor changes into the railway track. It consist a high-resolution CMOS camera mounted on robot. It is designed like: it can easily roll on railway track. In case of any obstacle or train coming on track, robot folds itself and provides a path to pass the train. It is controlled by wireless control system, which can be operated from remote location or station. For accurate results, a live video streaming is done to the remote station for future references and comparison of results. On the assembly of robot, a GPS (Global Positioning System) is mounted to know the location of robot on the rail track. An obstacle detector sensor is also mounted on the front of the robot to detect any coming obstacle. In this article ultrasonic method (Non-Destructive Method) is also explained to detects presence of cracks on rail track in real time. Overall, power utilization of this system will be very low by operating this system by solar power. Signal processing and wireless communication system is used as technology, which cuts off the overall cost. By implementing this surveillance system, we can improve the safety parameters of Indian railway by minimizing the errors and reducing the time and cost.

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SEM study of head and cuticular armature of Gnathostoma doloresi [ Nematoda, Gnathostomatidae ]

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Yadav A. K. , Tandon V.

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nr 3

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SEM structure of Bourgelatia diducta [Nematoda, Chabertiidae]

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Yadav A. K. , Tandon V.

Acta Parasitologica

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1993

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tom 38

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nr 3

EN

The surface ultrastructure of Bourgelatia diducta, a common nematode parasite of domestic pigs in India, was examined with a scanning electron microscope. The anterior end possesses an external corona radiata of 21 elements, 4 cephalic papillae and 2 lateral amphids. The bursa is formed by a longer dorsal and 2 shorter lateral lobes that incorporate a genital cone. The female tail bears a pair of caudal papillae and phasmidial pores near its tip. The vulva appears as a circular, and the anus as a semicircular, opening. The surface ultrastructure of the species studied herein is compared with other members of its family (Chabertiidae), examined previously by SEM.