Applied Mechanics and Materials Vols. 416-417

Abstract: language is the most natural to pass information, the most effective and most convenient method, at the same time, because everyone there are differences in pronunciation organs and habits, by the speaker's voice to identify the identity will make process more convenient and effective. Its application can not only make the system of information security has been further guaranteed, you can also bring great convenience to users, increase the economic benefits of system operator. This paper first introduces the principle and the research of speaker recognition system, and then discussed the pretreatment of the feature parameters in speaker recognition system and the feature extraction process, finally discusses the implementation results and the test of speaker recognition system, shows that the system run correctly, the performance good, to achieve the desired effect.

Abstract: For application requirements of smart multimedia system, the paper design and implements system application framework and describes the function of each software module in the whole system. After description of the overall framework,paper analyze detailed implementation of several key software modules,that is supports SD and HD video signal, video capture module, object intrusion alarm motion detection module, audio and video multimedia processing synchronization mechanism, and web-based remote control module. And the article describes the main features of the DaVinci technology and DaVinci technology platform development, elaborated the DSP6467 DaVinci platform hardware structure which used in this paper.

Abstract: Because the mechanical motion capture system can only capture the motion data of the human body and it can`t achieve the positioning function in three-dimensional space, therefore, it is only suitable for capturing just one person's motion data. This paper will introduce the UWB positioning technology to the multiplayer mechanical motion capture system, the system through the mechanical motion capture technology to get the motion data of performers and using UWB positioning technique to obtain the coordinate data of each performer, then through the integration and calculation of the above two kinds of data, the system will acquire the complete motion data of each performer.

Abstract: Aiming at the problem that the stability of clustering recognition algorithm without any prior information is not enough and the network cluster extraction quality needs to be improved and so on, the original algorithm is improved from the following aspects: The choice of the destination vertex function is added in the random walk; use automatic step number detection method to cancel the original algorithm of random walk steps parameter; add weight of evaluation inter-cluster connection on the original based on cluster extraction conditions; realize the controllable particle size of cluster extraction by introducing the threshold parameter. The test results show that the improved algorithm in terms of anti-jamming in the stability and the clustering quality are higher than the original algorithm.

Abstract: The development of the automobile industry led to the development of auto parts, and airbags are one of the most important safety components of cars. In this paper, to meet the shortfall of traditional way of using a dial indicator to detect airbags deficiencies, a new automotive airbag shape detection methods based on image processing technology is put forward. First, extract the airbags image edge information using the method of boundary tracking, then detect whether airbags are qualified according to the similarity of image invariant moment. Experiments confirmed this method can improve the range and accuracy of the airbag detection.

Abstract: One being developed automatic sweep robot, need to estimate if anyone is on a certain range of road ahead then automatically adjust running speed, in order to ensure work efficiency and operation safety. This paper proposed a method using face detection to predict the data of image sensor. The experimental results show that, the proposed algorithm is practical and reliable, and good outcome have been achieved in the application of instruction robot.

Abstract: Articles for shell parts CNC machining process, project analyzed and discussed. Analysis of case processing factors affect the gun balance beam gear rotating parts; proposed economic program of quality assurance measures and casing processing; This paper will compared to the original process and improvement process, the shell process, to do this re-determine the economic process and the causes of quality problems and the economical process scheme according to the characteristics of small and medium-sized enterprises.Quality assurance measures; proposed economic projects introduce a key process in the process modified process, reasonable development of technology programs, the use of general machine is a reliable way to achieve better economic efficiency.

Abstract: This paper illustrated the importance of determining reasonable gravure hot-air drying parameters. On the basis of residual solvent detection via gas chromatographic method, the effect of hot-air velocity, hot-air temperature and primal solvent content on residual solvent was analyzed. According to polynomial regression analysis, curve fitting was conducted, and mathematical model of various parameters, average drying velocity and unit energy consumption was constructed to optimize printing dryer and guide practical production.

Abstract: In order to facilitate intuitive and understanding of the frequency synthesizer technology, research on direct digital frequency synthesizer by the phase accumulator , waveform storage ROM, the D/ Aconverter and low-pass filter modules .Multisim provides powerful virtual electronic platform, realize DDS synthetic sine wave design and circuit simulation by C51 MCU control center, while providing key code. By adjustingthe reference clock frequency fc, or to adjust the frequency control word K, can be clearly seen of the frequency of the synthesized sine wave will be changed.

Abstract: A study on production line layout problem indicates there is a lack of research on the production line design issue. Traditional methodology on this problem mainly depends on the designers experience and calls for theory analysis and quantitative study. To control the cost and optimize the resource utilization of enterprises, this paper develops a multi-stage integer programming model to describe the production line layout problem, and proposes a heuristic algorithm to solve the problem. A practical example illustrates the effectiveness of the model.