Applied Mechanics and Materials Vols. 198-199

Abstract: Tennis is a very elegant sport, with a strong sense of competitiveness and appreciation, which has gained more and more attentions in our country, and it tends to be a fashion. This project is to achieve the measurement of tennis batting motion attitude in three dimensional space using a combination of the three-axis MEMS(Micro-electromechanical Systems) sensors, and make research on the principle of measurement system, composition and data acquisition. Body posture measurement system is to measure the attitude measurement in human movement, it can be applied to study the movement posture or to meet the requirements of position control, which provides theoretical foundation for scientific training and prevention of sports injury and also plays a significant and instructional role in improving the training levels of tennis playing and generalizing nationwide fitness campaign.

Abstract: This article has given one kind of IC card system based on EAS(Enterprise Application System)platform, Including system architecture description, the main module describes the structure and function. IC card system using the standard PBOC1.0 and Symmetrical key system ,can support three types of applications:Electronic wallet,Medical Insurance,Rechargeable card.This system have the main features of security ,flexibility, and already put into application.

Abstract: Maintainability is a main design attribute of a civil airplane. So evaluation to the maintainability is very important for the design of the civil aircraft. The Human motion capture is a promising technique for maintainability evaluation. In this article, a method about the maintainability evaluation based on the optical motion capture system was presented. Then a test case was developed to demonstrate the feasibility of the method. The test case mainly focused on the accessibility of the civil aircraft.

Abstract: In-depth analysis of the characteristics of the battlefield on the basis of ferromagnetic targets, according to the problems of magnetic fuse detection system, such as low detection resolution and poor status of target recognition, the new type of magnetic sensors based on Giant Magneto-Impedance(GMI) effect, because of the sensitivity, power consumption, etc. natural advantages, with its fuse detection system for the magnetic core components, combined with fuzzy neural networks, can guarantee that probe nano-Tesla(nT) accurately identify the target within the scope. Then, equable magnetization rotation elliptic is used to simulate the tank and military truck, taking the magnetic moments and semi-focal length, that are M_x, M_y, M_z and c, as recognition characteristic quantity, and the FNN is used to recognize the tank and military truck including the categories and motion directions. The method achieved good recognition results through experimental verification, and it has great significance to improve detection range and recognition accuracy.

Abstract: This paper focuses on the problem of non-fragile static output feedback control for discrete-time fuzzy bilinear systems. Based on the parallel distributed compensation approach, the sufficient conditions are derived in the presence of the additive controller gain perturbations. The stabilization conditions are further formulated into linear matrix inequalities (LMI) so that the desired controller can be easily obtained by using the LMI toolbox.

Abstract: Sensing marine plankton plays a key role in biological oceanography system. Lots of sensing marine plankton systems using different methods are developed so far with different functionality. In this paper, a systematic analysis of most methods used is summarized for direct sampling measurement, electron counting measurement, acoustic detection measurement and optical observation measurement. Technical and functional properties of developed devices are systematically analyzed and problems are also given. Finally, future needs and possible research directions are provided.

Abstract: Solar radiation between 100 and 400 nm has a number of effects on human health. The UV Index and exposure time are particularly important in the evaluation of the risk of sunburn, skin cancer and other injury. This paper used the UVM-30 photodetector to measure the UVI and the max exposure time in sun real time with a simple linear function relationship circuit. The results suggest you should bath in sun not more than 36 minutes at noon, or not more than 106 minutes at 17:00 in the afternoon with 5 UVI.

Abstract: After introducing the principle of ventilation and dehumidification for closed steam hood, the key and difficulty points of its control are analyzed. Aiming at the production line of coating white board with surface sizing and high steam consumption, DCS system of steam hood based on SIMATIC S7-300 PLC is designed. The hardware structure and control algorithms are illustrated in detail. The control system has been applied on the paper machine with nearly 10 board paper plants of the coating white board paper base in Fuyang, Zhejiang province, and the good energy-saving control effect has been obtained.

Abstract: This paper aimed to solve the problems that traffic detector which was used in china, can't satisfies the multifunction and high-accuracy needs of the domestic traffic survey and traffic volume measurement.We designed a traffic detection system based on laser and piezoelectric technologies,which is made up of laser speed sensor, laser scanning sensor, piezoelectric axle shaft sensor, data acquisition unit, software system and server, and their application was discussed in detail. The working principles of laser speed sensor, laser scanning sensor, piezoelectric axle shaft sensor were presented, and the detection parameters of the system were put forward. The whole structure and data processing flow of software system were also pointed out. Through test verification, the multifunction and high-accuracy characteristics of the system were verified. This traffic detection system has great significance for enhancing the research level of the domestic traffic survey and traffic volume measurement.

Abstract: Laser pen instruction-aid system is intelligent equipment used to increase the interaction between lecturer and audience in the smart classrooms for face-to-face, mobile, or cloud learning. Lecturer can use the system to easily control presentation documents and to communicate with the audience. The system can function either as a mouse or a keyboard. And the system can draw a laser spot track and do path drawing on the presentation document, so as to make the presentation vivid and interesting. All these functions are supported by the Bluetooth communication mechanism, which sends control signal from the laser pen and receives the signal on the computer. The paper describes how Bluetooth devices enable the signal communications and the unique functions of the pen.