Applied Mechanics and Materials Vol. 418

Abstract: The purpose of this research is to design and construct a marine stabilization table. This table is fixed on a ship and can be self-balanced when the ship is moving in the sea. The stabilization principle bases on gyroscopic force created by a flywheel. The study also uses ADAMS software to simulate and analyze the virtual model. The analysis result shows that with a flywheel of 33 kg and a flywheel spinning speed of 3000 rpm, the maximum tilt angle of tabletop is 6.16⁰ when an 5 kg object is placed on edge of the one-meter-diameter tabletop. A prototype of marine stabilization table is also manufactured in this research.

Abstract: This paper aims to study and detect the imperfects of the hollow fasteners with thin flange during cold forging process. In this study, the finite element analysis (FEA) based on 3-D DEFORM^TM software to investigate the plastic deformation behavior of the hollow fasteners with thin flange. The simulation results showed that there is a folding phenomenon, which is occurring in the forming process. As a result, it revealed that with using FEA, the imperfects of forming hollow fasteners with the thin flange can be correctly predicted. From that, the occurrence of defects can be effectively prevented in the actual fabricating process. Future work will include an investigation into the optimization of the mold geometric parameters during cold pre-forming process for hollow fasteners with thin flange by comparing the simulative and experimental results.

Abstract: nvent for life leads to the emerging open kitchen. An open kitchen is equipped with modern appliances. However, it has become fashion statement rather than just serve performance. In this research, we develop value-added kitchen appliances, such as digital gas stove, variable frequency range hood and smart dishwasher to promote serve performance of these appliances. After that we provide an integration method of these appliances based on ZigBee wireless link technology to increase the convenience, safety, and comfort of cooking environments. By the aid of a sophisticated human-machine interface designed with touch screen controller and each value-added appliance equipped with a ZigBee transceiver and electronics, these appliances can be linked and controlled centrally to provide more and more serve performance. With the proposed architecture, it will be quite handy for the ON-OFF function and flame size adjustment of digital gas stove are controlled by touching, and/or the speed control of range hood links with the flame size adjustments of gas stove automatically, thus increasing fuel efficiency, reducing power consumption and keeping clean environment during cooking. Besides the wireless link and control of appliances, this controller also can store and display the details of the recipes, preset modes of cooking conditions, etc., for use at other times. Experimental results show our proposed structure enriches the kitchen activities and brings a handy, safe and eco kitchen.

Abstract: With the progress of science and technology, the image resolution of monitoring systems is entered the Full-HD (High Definition) era. The Full-HD refers to resolution of 1920X1080 (1080p), and the image refresh frequency is 30fps (Frames Per Second). Therefore, this thesis uses FPGA as image system processor, as well as uses AFE to implement a camera module. First, the dual-channel serial signal from AFE is converted into single-channel parallel signal, and the image is processed following our image processing procedure before charting and export. The image processing procedure includes AEC, auto color balance, color filter array interpolation, color correction, noise filter, gamma correction and dynamic range correction. Our algorithm counts information instantly, and calculates better correcting function content, so that we can display the brighter and darker parts of images clearly in different environments. Compared with a part of CCD digital cameras on the market, our ISP has better performance in SNR. Finally, the AWB mean error of our ISP design is less than 0.02%, it is difficult to be perceived by human eyes.

Abstract: This paper presents the design of a Python-based embedded streaming media server. The server uses the streaming media protocol which is written by Python, implementing video capturing using c language, not only highly efficient and stable, and more scalable, its very convenient for routine maintenance. The design is simple to implement two streaming media protocols, RTMP and RTSP; the client can play the video smoothly, using VLC or Pot player.

Abstract: In recent years, following malaria, tuberculosis, AIDS, Novel Influenza, and other infectious diseases, have an enormous impact on the entire globe, and directly and profoundly awaken the public, making them cognitive and alert regarding emerging and re-emerging infectious diseases. For some countries or developing regions, tuberculosis is still very serious, however, the public is still unclear TB development and change a variety of factors, therefore, need a model theory of tuberculosis. In view of this, the global epidemic, scientists and statisticians hope to further develop a complete inspection and data acquisition system and is committed to the existing monitoring system, and through the establishment of mathematical models and the spread of infectious diseases dynamics of quantitative methods to facilitate the practical application and control of epidemics, trends and cost-benefit assessment, and help build disease prevention policies, evaluation and revision.

Abstract: In this paper, the characteristics of AC/DC converter under single-phase voltage sags and three-phase voltage sags are simulated with Matlab emulator. The simulation results show that effects on rectifier equipment under three-phase voltage sags are more serious than those under single-phase voltage sags. The flat wave capacitance plays an important role in voltage sensitivity of sensitive loads. In practice, the capacitance of flat wave capacitor is chosen according to the power supply and load requirements so as to realize the best balance of performance and price.