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Abstract-In this paper a new round robin algorithm proposed for reducing context switching and solution of large time quantum. In round robin algorithm is not applicable for real time operating system because more context switching and time quantum is not fixe. Basically my proposed algorithm for a soft real time operating system. Round robin CPU scheduling is not applicable for soft real time operating...
Real-time path planning is one of emergent approaches which efficiently reduce traffic jam in urban scenarios. Designing an efficient path planning strategy to achieve optimal vehicle-traffic flow control still remains a challenging problem, especially when we take human's uncooperative and uncoordinated selfish behaviors into consideration. In this paper, we first introduce an intelligent transportation...
Abstract-The dynamics model based on aeromodelling uses computer control technology and GPS positioning. The coverage and flying precision of unmanned aircraft can be increased greatly. Effective control of observation area is achieved. It takes lots of time to calculate the path points if traditional continuous path control algorithms are adopted. It is not conducive to real-time control of aircraft...
For improving environmental visual perception of indoor robots more accurate and faster, a new model based on image multi-feature fusion is proposed. The hierarchical match mode is used to match real-time collected images of indoor robot with various multi-directional and multi-state images in a database. After establishing a database of 1000 images, average accuracy, average recall ratio and average...
The basic advantage of stepper motors over other types of motors is that it can be driven by digital and open-loop control. However an open loop control shows a poor dynamic performance and is insufficient in precise motions which require a high dynamic, so a closed loop control is required. This paper describes field oriented control which will improve the dynamic performance of the Hybrid stepper...
The initial real-time information system for Bus Rapid Transit (BRT) is based on Global Positioning System (GPS) in Ji'nan, it can't provide accurate real-time information of buses arrival/departure at stop, and missing data of GPS is often found, especially under elevated highway or in bad weather. The papers put forward a new way to provide real-time transit information for BRT based on GPS/Signpost...
Time synchronization is one of the key points in distributed real-time computer system. At first, a time synchronization method under 1PPS signal is put forth. Secondly, two kinds of relevant synthetic disturbance are analyzed, and time synchronization logic is studied to cope with the disturbance. Arena software is chosen to model and simulate the time synchronization procedure. At last, the whole...
In order to improve the management efficiency and convenience of the access control system in intelligent building, according to the new demand, a network entrance guard management software has been in this paper developed based on original software for single computer system. Inquiring real-time network data, browsing real-time information and long-distance monitoring can be realized by use of the...
Environment has big effect on the development of an organization. This essay disscuse the effect that external environment has on organization structures by focusing on two issues as total environment and real time environment. We try to find out the feasible method to handle the relationship between external environment and organization structures.
When facing the emergencies, to achieve the whole day real-time scanning services on targets, we propose a program with integration of visible and infrared imagers. A novel airborne low-altitude monitoring system is designed. it helps operators to detect targets accurately. Experiments show that the design is feasible and the system is practical, reliable, and easy to operate, displays Chinese characters,...
A basic network model N of local flow is a simple directed graph, in which transfer capacity and circulation capacity of a node in a local flow network are not detected and characterized. As a result, it is not in accord with various factual states and changes of the network commonly. An improved mathematical model NIO, called a node-separating model, was proposed in the presented paper. The NIO involves...
The paper describes an Intelligent-control Coating System for resin rollers. The system is divided into five sub-systems, the Host-computer Control System, the Slave-computer Control System, the Quantitative Coating System, and so on. The host-computer Control System collects PLC signals, vacuum signals and temperature signals through MCGS, and completes real-time monitoring. PLC is the main unit...
This paper of railway crane according to the analysis, describes a new generation of railway crane of the profibus control system. This system is composed of 2 DP masters and 16 DP slaves, adopts the bus-type network topology and completes signal acquisition and A / D conversion function. Data is processed by the sites, and then transferred. The system sends the information to the monitor display,...
Research and design on the DC servo motor position control system was developed based on the virtual instrument technology. The research focuses on the system configuration, PID controller, data acquisition and the real-time control procedures. An experimental rig has been built, and the test has been carried out. The experiment results show that the system in this paper has more advantages than traditional...
According to the requirements of a DC motor speed control system, a Dual-Closed-Loop Speed Regulator has been designed, with the AT89C51 and TMS320LF2407A is the MCU of this regulator. The function of TMS320LF2407A is sampling and regulating the speed of the DC motor, and the function of AT89C51 is inputting and displaying the speed of the DC motor. The hardware block diagram, program charts, and...
In order to realize the rapid construction and dynamic reconfiguration of human-computer interface, a rapid developing model based on component assembly was proposed recurring to an assistant design tool developed self-owned, as well as the assembly models of domain component and interface components. In the rapid construction model, the scheduling component cooperated with configure file to achieve...
In this paper we propose a new algorithm for the least square fitting of ellipses from scattered data. Originally based on the one proposed by Fitzgibbon et Al in 1999, our procedure is able to overcome the numerical instability of that algorithm. We test our approach versus the latter and another approach with different ellipses. Then, we present and discuss our results.
There is an emerging focus on real-time data stream analysis on mobile devices. A wide range of data stream processing applications are targeted to run on mobile handheld devices with limited computational capabilities such as patient monitoring, driver monitoring, providing real-time analysis and visualization for emergency and disaster management, real-time optimization for courier pick-up and delivery...
This study addresses the general problem of efficient resource management in wireless networks with arbitrary time-varying topologies. Communication channels are assumed to generally accommodate multiple simultaneous transmissions. In this context, we focus our attention on the problem of distributed transmission power allocation and medium access by links (transmitter-receiver pairs) that require...
The information of vehicle is very important for maintaining traffic order under the present complex traffic environments. The image of vehicle is captured in various ways; fixed camera, movable camera, and vehicle-loaded camera. This paper proposes a new vehicle plate recognition mechanism that is essential to know the information of vehicle. The proposed method is a real-time processing system using...
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