Applied Mechanics and Materials Vols. 556-562

Abstract: In order to understand the working position of the status of marine diesel oil unit in time, reducing the failure rate and improving fuel supply efficiency, Forcecontrol monitoring system based on PLC and Configuration Software is designed. The lower computer S7-200Smart PLC is collected the signal of the system such as temperature, pressure, viscosity and flow rate sensor periodically, by means of analyzing data, outputting a control signal to control the corresponding valves opening or closing as well as various types of motor start or stop status. A Forcecontrol monitoring configuration software is used as upper computer, to execute remote control and monitoring of the system.The system can realize video surveillance of field apparatus via the Forcecontrol configuration software without adding external devices and keeping high system integration, and achieve application innovation of Forcecontrol monitoring configuration software.

Abstract: This paper designs a three-dimensional positioning scheme suitable for indoor, adopts Chirp Spread Spectrum (CSS) and the particular Symmetric Double-Sided Two-Way Ranging (SDS-TWR). Combining BMP085 pressure sensor to measure altitude, it can implement three-dimensional positioning of a moving object in indoor. Due to the complex indoor environment would cause multipath effect when Chirp signal being transmitted, this scheme uses Kalman filtering method to filter out mutative coordinate value, thus the positioning error can be controlled within 1 m.

Abstract: Along with improvement of capability of the precision measurement radar, the servo system with more high capability is needed. A large antenna reduces rigidity and structural resonance frequency of antenna system, and it is even possible to make radar lose the target. Based on analyzing Ship-borne servo system, the model of servo system has been set up and intelligent integral has been applied in the Position Control Loop. The result of simulation shows that this method can decrease overshoot of the servo system and improve the quickness of the servo system.

Abstract: With the example of stress corrosion test of natural gas pipeline steel, the application of Visual Basic (VB) language program in the test will be discussed in the paper. The result shows that different waveforms of VB language design can simulate various forms of applied load of pipeline steel well, and make fluctuant slow strain rate test more accurate and convenient.

Abstract: The airport navigation light simulation system is designed to improve the ability of navigation light’s operators. The structure of airport navigation light system is introduced. To simulate the faults of light circuit, the fault model of light circuit for airport navigation system is built and is verified by simulation experiment. A power flow calculation algorithm is completed based on the equivalent circuits of airport navigation system. Method of bisection is taken to locate the faults of the light circuit in the simulation system. The airport navigation light simulation system is built for operator training and it works fine.

Abstract: Thinking applied to the seed dispersal weighted network using node strength to find seed node, and through seed nodes for each node fitness Looking node's home societies, and update the node in the iterative process of fitness makes societies divided stabilized. The experimental results show that the network based on the weighted overlap Societies seed dispersal algorithm can be found in weighted social networks effectively divided and divided more tends to be refined.

Abstract: We introduce a new algorithm for Image Registration and Stitching. The algorithm is designed to be extremely efficient and fast in its execution and is intended for use in stitching images extracted from a video stream of a camera. This algorithm is not universally applicable to all the image registration and stitching problems. It is customized to be used to generate single images of surfaces such as a conveyor belt or undercarriage of vehicles, which cannot be captured by a single photo. The algorithm works by extracting edges of the two images to be registered. Then it selects a reference section from the first image and search in the second image where it finds the best match for that section. The best match is the east difference score. We present full details of how the extraction of the heuristic is done from the inputs and how it drastically reduces the execution time of the algorithm. The paper also contains a full section on comparing our algorithm with a set of existing algorithms. Our algorithm outperforms the existing ones for all the common image sizes.

Abstract: Position technologies is the basis of maritime navigation system as a whole, almost all functions of the system are predicated on ship position accuracy. Position accuracy and timeliness is directly related to navigation systems practical value and overall performance, so locating the main source of error is the navigation system error. Insights into the causes of these errors, in marine transportation organizations, navigation safety and accident prevention has played a huge role.

Abstract: Currently, GPS global positioning system has been in the areas of precise positioning, navigation, timing has been widely used. By GPS-OEM combined with computer and communications technologies, users are able to easily and independently developed to meet the specific needs of GPS systems. Design system based on GPS navigation navigation system requirements package, in-depth study of the main factors affecting the precision of navigation. Several factors made corresponding solutions, implements navigation navigation system the main functions of the software.

Abstract: Software metrics include project metrics, product metrics and process metrics. Software measurement process model embodies the relations among the three aspects of collection mechanism, analysis evaluation and project control of the metrics data. The three measurement activities and measurement information can be respectively applied to effective data acquisition, measurement process improvement and software process management. Data collection and analysis are the key to the software measurement process, the continued advancement of their technologies and methods has important significance on the improvement of software measurement process.