Applied Mechanics and Materials Vols. 241-244

Abstract: RFID system is facing the serious problems of private security, which mainly consists of the leakage of tag sensitive information, tracking and monitoring spitefully the carrier of mobile tag. This paper constructs a coordination protection mechanism of tag private information by a variety of reader-writer, which solves the two questions mentioned above. Firstly, a trust-security mechanism used to ensure that the readers in system are trustful. Next, via intercommunication of the readers, the secret key, which is produced by the tag-charged reader, is divided and distributed to the various readers in system. The test result shows that attackers cannot gain the shared secret key from various readers, and he/she could only read an encoded data, thus the security of private information in tag is guaranteed. Additionally, a set of readers use coordination-protection mechanism, which is an efficient way to improve the expandability of the system.

Abstract: Internet of Things technology has played a significant role in promoting the development of various industries. intelligent logistics is one of the representative application. Firstly, this paper introduces the principle of Internet of Things, the hardware and software systems. secondly, paper analyzes the Internet of Things technology applications in intelligent logistics and also points out the its problems. Internet of Things promising applications is finally summarized.

Abstract: Learning from the successful experience of the 2010 Shanghai World Expo, modern logistics industry offers tremendous opportunities. Under this condition, the paper predecessor analysis on the basis of the design of large-scale comprehensive exhibition logistics network operating programs, solutions of the logistics industry is pointed out faced with the logistics of the extended time, the complicated logistics and other issues. A well operated exhibition logistics system and its information system are designed with several advantages.

Abstract: along with more and more trajectory dataset being collected into application servers, the research in trajectory clustering has become increasingly important topic. This paper proposes a new mobile object trajectory Clustering algorithm (Trajectory Clustering based Improved Minimum Hausdorff Distance under Translation, TraClustMHD). In this framework, improved Minimum Hausdorff Distance under Translation is presented to measure the similarity between sub-segments. In additional, R-Tree is employed to improve the efficiency. The experimental results showed that this algorithm better than based on Hausdorff distance and based on line Hausdorff distance has good trajectory clustering performance.

Abstract: The IoT is considered as one of the most important supporting technologies of the smart grid and the smart grid is considered as one of the most important application areas of the IoT. However, the electric IoT has vast amount and many kinds of sensors, very high data acquisition frequency, and a highly heterogeneous network, which lead to the challenge that if the raw time-series data gathered by sensors is all transmitted to the sensing data center via network and then compressed and reserved, the bandwidth and the computing resource requirements of the network and the sensing data center, respectively, are unacceptable. In this paper, in order to cope with the challenge, we propose an in-network time-series data compression algorithm, i.e., the DSDT (Distributed Swinging Door Trending) algorithm, for the electric IoT, which utilizes the computing resource of the sensors to compress the raw sensing data, and then transmits the compressed data to sensing data center where the data will be further compressed and reserved. In this way, the bandwidth and the computing resource requirements of the network and the sensing data center, respectively, are significantly reduced. A performance study shows the superiority of the algorithm.

Abstract: With the rapid development and application of the Internet, both the way and the field of hotel marketing have seen changes. The traditional pattern and way of hotel marketing have become incapable of adapting to the development of the times, and hotel marketing in the new period is launched more and more via the informationalized online platform before becoming the major means. This paper, on the basis of analyzing the formation and development of the AISAS model, studies the hotel consumer behavior and provides targeted solutions to the problems existing in the present day hotel e-mark.

Abstract: Aiming at the problems how to realize long range, high speed identification and how to integrate web with the management system in the UHF RFID applications, a UHF RFID reader system based on S3C2440 microprocessor and AS3992 UHF Reader chip is designed and implemented in this paper. By designing the RF front-end power amplifier and signal isolation circuit, the transmit power detection circuit and the antenna impedance tunable matching circuit, the transmit power reaches up to 32 dBm and the receiver SNR is improved at the same time, resulting in the stable read range reaching up to 12 meters. In order to integrate web control into the RFID management system, the reader system is transplanted into the embedded Linux OS and a web management system that is based on web server and CGI is constructed. Device drivers are developed and RFID APIs are packaged, greatly facilitating the software development and maintenance. By using the Random-Slotted anti-collision algorithm, high speed identification of ISO18000-6C RFID tags has been achieved.

Abstract: In order to satisfy tenants’ customization requirements, cloud system should adapt to constantly variable requirements and variety in business area. So, a novel method constructing cloud system in flexible SaaS patterns is proposed. Following the guidance of flexible thought, the method introduces a series of steps containing service division, constructing service level and so on to help developer analysis and design the whole structure of services and its extensible functions, then, by means of software development based on plug-in and dynamically assembling framework Equinox, services and plug-ins are dynamically assembled into complete services for tenants. Finally, to confirm the maneuverability and effectiveness of this flexible method, it is introduced into a communication project.

Abstract: This article proposes the internet of things monitoring and dispatching system for port based on SOCKET communication, which is through the analysis for port’s current situation, system components, operation process and communication protocol, etc. The system can fulfill real-time positioning monitoring and dispatching for port’s mobile terminals, and also fulfill real-time monitoring and management for the whole port. Eventually it can improve the total competitiveness of port by improving production efficiency of port, securing operation safety and decreasing production cost.

Abstract: Our current thermal management in public buildings still remains in the stage of extensive management, which leads to the difficulty in guiding a heat-user to cultivate the awareness of energy conservation. As a result, a large quantity of heat is wasted. Therefore this article introduces a thermal control mechanism based on strategies, and proposes a design of zigbee-based wireless temperature collecting method to collect temperature in the heating field. On the basis of these techniques, an automatic control system for the heating of public buildings is achieved. The system fits the users’ heat use habits and is easy to operate, so that it can guide the heat users’ awareness of energy conservation and reduce energy waste.