Xiao Wei Han

Design of Dynamic Vehicle Navigation Terminal Based on GPS/GPRS

A design scheme of combine dynamic vehicle navigation terminal based on GPS/GPRS is presented, according to some shortcomings about real-time and the digital map data updating in existing vehicle navigation terminal. The paper focuses on the basic working principle and software flow of work of the CPU core board and the main functional modules. Established TCP/IP communication mode based on GPRS and used data monitoring server, to realize the accurate prediction of traffic flow information. The design of the Vehicle navigation terminal provides an important prerequisite for realizing the urban traffic vehicle global optimization and dynamic navigation.

Embedded Software Design of Campus Tourism Navigation Based on QT

This paper builds a model of QT4 for WinCE 5.0 development platform based on Visual Studio 2008 environment. It offers the campus tour navigation interface which is designed by using Qt Creator tools and code, and implements the transplantation of application in GEC S5PV210 development board which is applied to the actual project successfully.

Abnormal Event Detection of Traffic Intersection Based on SAT Algorithm

SAT (Separating Axis Theorem) is an algorithm applied in two-dimensional games of collision detection in the convex polygon. This paper applied SAT algorithm into video monitoring at intersections to detect the vehicles collision incidents. Established separation axis to extracted vehicles and projected the target vehicles into separation axis. Through comparing the scalar value in separation axis to determine whether the target vehicles collision. Its proved that the method is effective by using Matlab software to the simulation test in this algorithm.

An Electronic Image Stabilizition Algorithm Based on Gray Projection and Circle Projection Matching

In most video systems,the carrier of camera expierences all kinds of motions which make the video ambiguous and unstable.Usually,the gray projection matching algorithm can only stabilize the translation motion between frames,but the rotation motion of frames in a video sequence.By zoning the image into few small regions,the rotation motion could be ignored,then, local movement vector is aqcuired by the grey projection matching method and compensate the movement between frames.Then for the rotation movement,it can be stabilized by the compensation with circle projection matching.

Design of Condenser Rubber Ball Cleaning Counting System Based on CPLD

The working condition of the condenser in power plant is an important factor that affects the economic operation of the power plant. Rubber ball cleaning is a main method to deal with the condenser fouling. The thesis, dealing with the problem of counting errors of rubber ball in the process of condenser cleaning, based on CPLD(Complex Programmable Logic Device) technology, designs a programme have rubber balls checking and counting automatically. The program takes use of the controlled laser sensors to count the number of rubber balls in every single pipe and the parallel processing capacity of CPLD,and have the number of different pipes counted and shown. Experiments have proved its constancy and accuracy.

Emergency Countermeasure and Rescue Plan of Subway Fire

Subway is one of the most important public transportations in cities, and its operation security is a very prominent problem. Subway fire is an outstanding issue. The paper begins with the characteristics and reasons of subway, and sets forth the emergency countermeasure and rescue plan of subway fire.

The Weld Image Acquisition and Preprocessing Based on FPGA

In the weld image acquisition system, real-time image processing has been a difficult design bottleneck to break through, especially for the occasion of large data processing capability and more demanding real-time requirements, in which the traditional MCU can not adapt, so using high-performance FPGA as the core of the high speed image acquisition and processing card, better meets the large amount of data in most of the image processing system and high demanding real-time requirements. At the same time, system data collection, storage and display were implemented by using Verilog, and in order to reducing the influence of edge detection noise, the combination of image enhancement and median filtering image preprocessing algorithm was used. Compared to the pre-processing algorithm of the software implementation, it has a great speed advantage, and simplifies the subsequent processing work load, improves the speed and efficiency of the entire image processing system greatly. So it proves that the system has strong ability of restraining the noise of image, and more accurate extracted edge positioning, it can be applied in the seam tracking field which need higher real-time requirements.

Design of Vehicle Navigation Terminal Interface Based on QT

A designed scheme of Vehicle navigation terminal interface Based on QT is presented. According to the current high cost of vehicle navigation terminal is common problem. The paper focuses on the design process of the Linux OSQT GUI and electronic map. The establishment of the communication way of GPRS and the analysis of the GPS data is finished in this paper. The design options of software, combining with hardware, is effective to solve real-time and dynamic update problem of electronic map display, data update, path query functions , The design of the Vehicle navigation terminal provides an important prerequisite for realizing the urban traffic vehicle global optimization and dynamic navigation.

MAP Based Super-Resolution Image Reconstruction Method

Super-resolution image reconstruction has been one of the most active research fields in recent years. In this paper, a new super-resolution algorithm is proposed to the problem of obtaining a high-resolution image from several low- resolution images that have been sub sampled. In the image registration, the paper puts forward an improved search strategies improving registration accuracy. In the MAP algorithm, the threshold parameters of solving the optimal value, making the estimated value of the optimal high-resolution images, so that the reconstructed image is better. The results of the experiments indicate that the proposed algorithm can not only make an automatic choice of the parameter and get the high resolution reconstruction image expected, but also can preserve the edges and details of the image effectively.

Fault Diagnosis Methods of Rolling Bearing: A General Review

Rolling bearing failures account for most of rotating machinery failures. Fault diagnosis of rolling bearings according to their running state is of great importance. In this paper current research situation and existing problems of fault diagnosis are summarized firstly. Then several different diagnosis approaches in terms of the measuring medium are reviewed. After analysis of fault mechanism, feature extraction based on non-stationary signal process is elaborated. Finally, the development tendencies are pointed out.