Applied Mechanics and Materials Vols. 568-570

Abstract: In recent years, the use of drill string automated processing systems on offshore drilling platform has become more and more widespread, and it not only can improve the efficiency of workers, but also can reduce the labor intensity. In order to make the automatic system more intelligent and more efficient in the whole process, in this paper, we designed a set of adjustable speed drill delivery system, which is based on PID control algorithm. It can not only improve the efficiency of the automated catwalks machine conveying pipe, but also ensure the quick and efficient production.

Abstract: System security and reliability play an important role in the engine electronic control system airworthiness certification process. System performance validation tests and environmental tests are the most important and effective method to determine and verify the system secrurity and reliability. In this paper,the process and main point for the engine control system certification will be given based on the Performance Validation Tests and Environmental Tests.

Abstract: In order to provide convenience for users to access the MIL-STD-1553B bus, a remote terminal FPGA interface is developed in this paper using 1553B protocol and BU61580 protocol chip. 1553B communication is implemented by a protocol chip which is controlled by FPGA logics. A simple port for users to receive and transmit data is designed. The operation mechanism of FPGA logics and the implementing methods of FPGA function modules are described in detail. Test results show the validity.

Abstract: The traditional real-time video surveillance system at smart home tends to occupy a lot of resource .In order to solve this kind of problem, a design of an infrared sensor to trigger video monitoring system is proposed in this paper .The system uses arm9-Linux as the platform ,and infrared sensor as the trigger device and uses the mpeg-4 algorithm to encode the video stream finally .The article mainly introduces how to build the hardware and software platform and tests the feasibility of the system.

Abstract: An implementation of a remote destruction solid state drive (SSD) was introduced in the design. The advanced technology of rapid data destruction, the technology of breakdown the flash with high-voltage pulse and the technology of GSM is combined together. As a result, user can operate through a simple command (text message or a call) to destroy all data in SSD, as long as the user confirms SSD is out of control. The method of erasing data and destroying the flash I/O are both executed, so the data can’t be recovered after destruction. At last, some tests are displayed to verify the performance of the remote destruction SSD.

Abstract: This paper builds a model of QT4 for WinCE 5.0 development platform based on Visual Studio 2008 environment. It offers the campus tour navigation interface which is designed by using Qt Creator tools and code, and implements the transplantation of application in GEC S5PV210 development board which is applied to the actual project successfully.

Abstract: The theory, design, implementation and experimental validation of a neural network based diagnosis method for open-switch faults in the three-phase grid-connection inverter are discussed. The model of three-phase grid-connection inverter are established with Matlab/Simulink. The feature value of output current wave of the inverter is extracted under various kinds of open-switch faulty conditions in the inverter with the FFT method and wavelet analysis method. The experimental results show the flexible and double domain superiority of the wavelet analysis. Finally, the design takes advantage of the extraction as learning and training samples, puts forward a new method of locating fault for three-phase grid connection inverter based on neural network structure. The simulation results show that the method can locate the fault device exactly and distinguish multiple fault modes. The experiment illustrates the effectiveness of the method.

Abstract: A free ordering system based on instant message—Fetion is studied. It is composed of an ordering terminal to print out the instant messages and a website to order online by sending Fetion. Related technologies studied include MCU controlled GSM module transceiving Fetion/SMS, MCU controlled mini-printer printing out Fetion/SMS, PDU encoding and decoding, website sending Fetion, and the software process of ordering. Demonstration systems and prototypes are developed.

Abstract: With the continuous development of SSD, It becomes the commodity requirements of memory storage users especially in consumer application. NAND Flash lifespan limitation is the most concerns of every user in relation to the drive’s reliability. This paper explains three factors which embark from the basic principle effect of SSD lifespan and induced the reliability strategies/the method of SSD lifespan prediction during the SSD design and usage period. We have designed a SSD`s lifespan management software which predict and manage the SSD lifespan. It will enhance the safety of SSD usage.SSD lifespan mechanism analyzes how actively you use your solid-state drive and uses a special algorithm to calculate its estimated lifetime. Of course, the date of the lifetime expiration is corrected depending on how intensively you keep using your drive.

Abstract: In this paper, a three-phase calibration method which is that the three-phase voltage transformer or current transformer of HV three-phase combined transformer is calibrated in the same time with simulating real running state is proposed. And a standard calibrating apparatus which is used to implementation three-phase calibration method is designed. The structure, working principle, technical characteristics, test circuit and test results of standard calibrating apparatus are given out. The large test results show that the error performance in real running state of 10kV-35kV HV three-phase combined transformer can be calibrated accurately and the error caused by the mutual influence between the voltage transformer or current transformer can be detected out with the proposed three-phase calibration method and apparatus.