Advanced Materials Research Vols. 562-564

Abstract: Geological disasters of landslides happen occasionally because of some frequent and no planning mining activities, infrastructure construction, or geological causes. Aimed to the disadvantages of existing manual searching method for landslides, a kind of landslide remote monitoring system using mobile GSM network for data transmission is designed and tested. The experimental result shows that the launch and receiving terminal of remote monitoring system are feasible.

Abstract: The flexure (compliant) joint has gradually replaced the rigid joint which is applied to the high-frequency device because of its structural advantages. As the most common type of error, the processing errors have a great impact on the performance of the flexure joints. It analyzed the width error and the other four processing error in the paper. Based on the detailed analysis of errors various structural parameters, it established a processing error model by using Paros J stiffness calculation formula and Smith S T error analysis method.

Abstract: In the acquisition process of ECG, noise, which mainly consists of power line interference baseline drift and the EMG interference, often exists due to the instrument, the human body and other aspects. This noise mixed with the ECG, will causes ECG distortion, which makes the whole ECG waveform blurred, and impacts the subsequent signal processing and analysis. In this paper, Coif4 wavelet is used to make the ECG decomposed by 8 scale; at the same time, the wavelet decomposition and reconstruction method is used to remove baseline drift, and then the improved wavelet threshold method is used to remove power line interference and the EMG interference waveform to obtain accurate geocentric, providing a more accurate basis for the medical diagnosis.

Abstract: In order to use of modern means of science and technology to the greatest degree of reducing fire damage to human life and property, this paper adopts the Zigbee wireless module to develop a Intelligent fire control system of office building , which can realize the indoor temperature, Co and concentration of smoke detection[1].The system consists of a sensor circuit, serial to Zigbee wireless, main control chip, executing mechanism and other components, using VB6.0 programming software, can realize the office environment real time data acquisition, real-time data curve drawing, historical data curve display, real time control parameters modification, thus realizing the office building fires monitoring and control.Keywords: intelligent fire, Zigbee wireless module, real-time information acquisition.

Abstract: MEWMA control chart is generally used to monitor slight deviation of mean vector for multivariate process. Sample covariance matrix S is often applied to estimate population covariance . When the initial sample data contains outliers, the results may be impacted and then weak the probabilities of control chart signals since the conventional mean vector and covariance matrix are not robust statistics. In this paper, FAST-MCD algorithm is used to build a robust covariance matrix to improve the robustness of MEWMA control chart. From the analysis of samples, the robust MEMWA control chart based on FAST-MCD algorithm has better immunity to small amount of noise in the initial samples.

Abstract: Aimed at the problem that video image is often affected by noises, the principle of median filtering and improved algorithm is analyzed. A new algorithm of noise elimination is presented, whose experiment on video processing hardware shows its reliability and advantage: image noise can be removed and image details can be preserved effectively.

Abstract: Flame Detection based on video is an important method for fire prevention. To save flame detection time, the moving objects were segmented from images in a video by using GMM(Gaussian Mixture Model) firstly. Then moving objects were determined as flame candidate or not by their color feature and area changes. The experiments show that the method could detect flame in video effectively with a low false positive rate.

Abstract: when the artillery gun, high temperature propellant gas and cartridge friction would bring serious thermal-influence to the Gun-barrel, they were erosion, abrasion, thermal stress and thermal deformation, and so on. All these would reduce the muzzle velocity，cannon-shot and accuracy, and limit the performance of guns, so its become the restrictions to improve gun power. From some research, all these bad influence relate on the temperature. In order to reduce these bad influence we would know the temperature change during gunning. So it is important to accurately measure the temperature of inner Gun-barrel bore, it is main aim of the paper. In this paper we would utilize the heat-transfer theory to study the temperature distributing in the canal, and apply the film-thermocouple sensor to measure the transient temperature distribute and apply Microcontroller-unit(MCU) technology to deal with these collected data, and then. We would apply compiled software that base on the extrapolation method to calculate the canal temperature. The temperature would offer a reference for take some methods to debase the canal interior temperature. Through some practice measure, the experiment data could arrive at the anticipative aim.

Abstract: Using a mathematical model, a feedforward controller model of Urea-SCR (selective catalytic reduction, SCR) in diesel engine is realized. At steady-state conditions, the simulated NOX concentration shows great consistence with the experimental value in the downstream of the converter. It can be seen that the simulation results show comparatively accurate performance of the model with the converter temperature changing linearly in the range from 450K to 750K.

Abstract: With the rapid development of our society, the costs of the labor are rapidly increasing, and the workers do not want to do the same thing all day long ,and they need some automatic equipments that can help them do the bored and dangerous things, but there are no such automated assembly for locks in China. We urgent need an automated assembly equipment to meet the needs of the production. And key tooth coding is the necessary conditions for the realization of automated assembly, and the difficulty is the key tooth extract, in view of the above, and the paper innovatively proposes an extracting method of key tooth code on the basis of experiments.