Applied Mechanics and Materials Vols. 644-650

Abstract: This paper proposes dynamic threshold control algorithm by Co-evolutionary implementation base on a multidirectional gradient edge detection predictor (MGEDP) template. First, the image cut into four equal parts, these parts will be calculate simultaneously the error values by MGEDP predictor template, in the four sub images using, dynamic threshold evolution; Use these feedback values, to get the error image, and to calculate the threshold values by collaborative computing OTSU threshold, and so on, to classify the edges of error image, The result was convinced that this model could not only accelerated the image processing by Co-evolutionary implementation but get the more details, clearer edges, and better visual sense image.

Abstract: The edge detection is very important in the early stage of the visual processing, According to deal with the local characteristics of image information, First,this paper apply GAP predictor templates prediction error of the image. Then using improved genetic algorithm combined with OTSU method, calculate the threshold. According the threshold, the error image edge was classified , and image edge was extracted. Experiments show that this paper algorithm is better results than the traditional edge detection, It has the advantage of edge location accurate, less false edge, and so image edge detection is an effective supplement.

Abstract: The study of the mechanical ruling process of aluminum grating needs a new test device. And a program controlled test device for mechanical ruling was analyzed, designed, manufactured and tested in this paper. The developed mechanical ruling techniques of this device to fabricate micropatterns are introduced with the characteristics of multiple degrees of freedom, openness, visualization, and operability. After some primary tests, assessment of microgrooves was performed with mini video microscopy, which confirmed the validity of the new device for mechanical ruling process investigation.

Abstract: In this article, a quality testing system was developed based on LabVIEW trail version. A pc-controlled electronic universal testing machine was applied to acquire mechanical characteristics. Through this system, muskmelon interior quality had been tested by using acoustics characteristics. Origin8.1 is used for treatment the signals, including data smoothing, FFT analytical, data fitting, baseline peak value analysis and other methods, then modeling according to these analysis data. The nonlinear regression analysis is available to the characteristics’ establishment for other agricultural products, which can supply theoretical references in order to appraise the quality of fruits and vegetables.

Abstract: In recent years, the technology of video surveillance, widely used in the coal industry, has become an important technical means in mine safety production and management. Movement monitoring of personnel and carrier is an important part in underground video monitoring and management. This paper firstly detects change region of moving targets through background subtraction and temporal difference. Detecting moving targets through binarization and morphological filtering, thus personnel and carrier are identified combining with shape feature and texture. The rest of this paper puts forward an improved particle filter method to recognize and track multiple moving targets. Lastly this paper gives an underground video example to monitor the underground video. The result of this paper shows that this method has great significance for mine safety production.

Abstract: This paper proposes an adaptive moving vehicle detection algorithm based on hybrid background subtraction and frame difference. The background image of continuous video frequency is reconstructed by calculating the maximun probability grayscale using grey histogram; Moving regions is gained by frame defference, the initial target image is obtained by background difference method,moving regions image and initial target image AND,XOR and OR operations to get the vehicle moving target images. Experimental results show that the algorithm can response timely to the actual scene changes and improve the quality of moving vehicle detection.

Abstract: On the basis of the determination of basic probability assignment based on interval numbers, and combine the generalized evidence theory in the open world, the paper proposed an approach to determine generalized basic probability assignment based on the interval number, which offered a new idea of the determination of generalized basic probability besides the determination based on fuzzy theory. The rationality and effectiveness are verified by the experiments.

Abstract: In this paper, the relative change rates of content of conjugated fatty acid glycerides, content of tans-fatty acid glycerides, unsaturation and linear long-chain fatty acid glycerides were explored after being at high temperature for several hours by using FTIR-ATR. The results hints:1.Starting from 160°C, the contents of conjugated fatty acids glycerides and trans-fatty acid glycerids in the vegetable oils increase but unsaturation and content of linear long-chain fatty acid glycerides decreases with heating temperature and heating time increasing; 2. When heating temperature reaches 200°C or more, the heating time up to four hours or longer, the four indicators (conjugated fatty glycerids, trans-fatty acid glycerids, unsaturation and linear long-chain fatty acid glycerides) of five kinds of vegetable oils have substantial changes; 3. The content of linoleic acid in the vegetable oil has some contributions to the change amplitude of contents of conjugated fatty acid glycerides, and the content of oleic acid in the vegetable oil has some contributions to the change amplitude of content of trans-fatty acid glycerides. Because refined “waste oil” experiences a longer history at temperature higher than 200 °C compared to the vegetable oil, four index value and its variation can be used as specific indicators for it.

Abstract: In order to testify the driving characteristics of 3m homemade steel-belt friction drive test bench, a data detection system under AT89C52 is developed.The system uses two photoelectric encoders as the speed testing unit and one weighing sensor as the strength testing unit.therefore.It is critical to both of them to be used on real time to detect properties,such as rotation speeds, direction, pre-tightening force and dynamic load and so on. It is tested that this system is stable which can record the date of pre-tightening force accurately with the error in the range of 1% and keep transmission accuracy with the error in the range of 0.5%.

Abstract: According to the problem of the temperature, light intensity, and smoke concentration acquisition for the indoor environment, a multi-channel data acquisition system based on ZigBee Wireless Sensor Network communicates with GSM network is introduced. This system taking CC2530 as the main controlling chip, using LabVIEW as the development platform, builds a data acquisition, analysis, query and display system. This system is stable, easy to maintain, and can be broadly applied to the remote real-time data acquisition and control.