Advanced Materials Research Vols. 433-440

Abstract: Logic design and verification is the frontend of ASIC (Application Specific Integrated Circuit), and is a very important design part during the design process of ASIC. A Verilog HDL design case－2×2 SDH digital cross-connect matrix is provided to illustrate the entire design process including logic-level description, verification and synthesis based on the frontend tools of Synopsys. After that a gate-level netlist conforming to the design requirements can be obtained.

Abstract: This paper analyzes the Virtual Engine platform “Virtools” and the theory of Multi-touch technology, explores the way to merge the behavior interactive module of Virtools and Multi-touch control mechanism, and proposes a resolution which integrates the virtual scene rendering and touch interaction. By creating the virtual scene of Dunhuang Mogao Grotto and combining the interactive advantage of Virtools when manipulating the 3D objects, the proposed system has created an immersive sensation of entering into the real environment. During the tour, the system will bring strong interests in Historical sites’ culture to its visitors. Implementation of the proposed system show that the researches on the virtual scene rendering and the integration of interactive technologies have achieved the desired effect.

Abstract: Traditional access control models through search Access Control List(ACL) to authorize [1-3]. Traditional access control models fail to satisfy the modern information system, thus Usage Control( UCON ) models were produced and fundamentally enhanced the traditional access control. The UCON models are considered as the next generation access control models. This paper is organized as follow. Section 1 introduces the Usage Control models. Section 2 introduces Regular Grammar ( RG ). Section 3 gives the RG of the 16 core ABC UCON models. Section 4 gives the RG of on-line antivirus procedure. Finally, section 5 summarizes this paper.

Abstract: The paper introduces a Wireless Series Port Communication System between PC and MCU based on the wireless communication module. With the MSComm control technology and the VC++ platform, a PC-side communication software is developed. Hardware and software of MCU-side is also designed by setting serial communication protocols and working modes. The system has been applied in the wireless communication of Open Architecture CNC System successfully.

Abstract: Analysed three design standards on the combination of wire breakage load and the value of tension load over the past decade , According to 1M module of State Grid Tower "typical design-110kV transmission line volumes", selected a straight pole and a corner pole to carry out comparative studies, mainly calculated and analyzed the towers bending moments on the different standards or codes of wire breakage situation and wire breakage tension changes , discussed the change of safety factors of lines’ impact on the tower's bending moments; analyzed synthetically the changes of the pole actual bending moments and weight resulting from inequable ice-coating and other load combination; finally drew a conclusion that national standard increased the tower design standards, and project investment corresponding increased, then put forward reasonable proposals considering the security and economic aspects. Analysis and study are very meaningful and valuable to the different parts of towers calculation and checksum.

Abstract: To solve the crossing-linkable polyethylene (XLPE) insulation compound purity evaluation problem, a high speed scanning measurement system was designed according to FPGA. With the updated information technology and advanced electronic devices, it is possible to develop a new inspecting technology for sorting, checking and evaluating material quality, by which defects microscopic images can be real-time recorded, processed and displayed. The result shows that this system can measure the size of impurity particles of XLPE cable materials correctly, it also can find out the accurate location and numbers of impurity particles. The resolving power of this method can reach 20 m and the error is less than 10%.The possibility that the impurity particles can be checked out is up to 100%.

Abstract: A novel reversible data hiding technique for JPEG images is proposed in this paper. Consecutive zeros in the tail of DCT coefficient sequence in each block are exploited to embed a number of secret bits by modifying only one coefficient. Thanks to the efficient data embedding in the DCT coefficients, the proposed scheme can provide a good rate-distortion performance. Also, when having an image containing secret data, one can perfectly recover the original image after extracting the embedded data. Experimental results show that the proposed scheme outperforms the previous method.

Abstract: Wireless sensor networks (WSNs) used for remote temperature monitoring is researched in this paper; the WSN is in multi-layered structure. The WSN node, the routing protocol which can choose the routing path adaptively, the data communication protocol and the data encryption technology for wireless transmission, WSN management and monitoring software are Researched and Realized. The WSN was deployed, tested, and running steadily, it proved that the protocol and node design are reasonable.

Abstract: The encrypt algorithm apply in WSN (Wireless sensor networks) is researched, the principle that the encrypt algorithm apply in WSN must follow is advanced. TEA algorithm is researched and used in multi-layered structure WSN, The routing protocol, the data communication protocol and the data encryption technology of the WSN are researched and tested, the results showed that TEA algorithm is appropriate algorithm and meet achieve requirement of the encrypt algorithm used in WSN.

Abstract: Based on ZigBee theory, the MC13213 module produced by Freescale company are adopted , and the star-network is established upon MAC 802.15.4 protocol stack. The paper advances the hardware design of the network node, and introduces in detail the thought of establishing network. A simply temperature sensor network is established through experiment, which proves the reliability and stability of the system.