Advanced Materials Research Vols. 756-759

Abstract: Aimming at the demand of China's remote medical monitoring, a scheme of a human health remote monitoring system based on ZigBee technology and ARM chip is designed. In this system, the signal from human is transmitted to the mobile terminal equipment --PDA through the ZigBee wireless network. The physiological signal detected is passed to the remote monitoring platform using GSM/WCDMA digital mobile communication system, which realizes the remote medical monitoring for patients at home. The experiment results show that the system has a stable performance, good mobility and can achieve real-time monitoring to the patient's health status.

Abstract: This paper introduces the real-time monitoring provided by the function of PLC control system based on the configuration control technology in silicon steel plant. Visual real-time monitoring of silicon steel flue gas dust removal system, the main parameters includes: working condition of the two temperature sensor in flue pipe, air conditioning butterfly valve, bag type dust trap system, high pressure fan, dust conveying system, dust unloading system and cleaning system, etc. Moreover, monitoring and give an alarm in case the failure of dust removal system appears appears in the course of their work. This paper also introduces the hardware components and software components of the visual real-time monitoring of silicon steel flue gas dust removal system, and their applications. And discuss how to use configuration technology develop and design real-time monitoring system.

Abstract: In this paper, they are proposed that the Agent-based single intersection traffic control and analysis of the basic structure of a single intersection based on Agent, modeling them. Single intersection is the basic control unit of the entire transportation system. The superior single intersection control is protecting transport network uptime. Agent-based traffic control combines the advantage of fuzzy control in complex transportation system; the fuzzy control technology used in traffic lights control decisions

Abstract: Server refers to one special computer providing users with the management of resources and services. Opposed to an ordinary PC, server demands much higher stability, security, performance and etc., hence the hardware including CPU, chipset, memory, disk system, and network set is different from PC.

Abstract: For the purpose of fast fault diagnosis and fault time point location, wavelet transform was used in the fault diagnosis in this paper, due to its singularity of the wavelet transform and multi-resolution properties, and it is verified the simulation examples, which illustrates different wavelet coefficients have different effect on the detection of mutation signal. Finally we obtained a general method of wavelet type selection.

Abstract: Permanent magnet synchronous motor (PMSM) vector control strategy is studied deeply in the paper based on the analysis of the operation principle of permanent magnet synchronous motor (PMSM). Permanent magnet synchronous motor (PMSM) speed-current double closed loop control system was built by Matlab/Simulink. The simulation results showed that the system had fast response speed, high accuracy and strong anti-interference ability and so on. It also proved that Permanent magnet synchronous motor (PMSM) vector control system had good dynamic and static performances.

Abstract: With the rapid construction of UHV power grid in China, the difficulty of transmission lines inspection and maintenance has increased dramatically. Thus it is urgent to adopt new technologies to replace the traditional manual mode of transmission lines inspection and maintenance. In this paper, the characteristics and applications in UHV transmission lines inspection of 3G and COFDM technology are analyzed and compared.

Abstract: The resources of wireless sensor nodes are limited, and the power of nodes is supplied with battery whose capacity is very limited, once the energy of battery is run out, the nodes will lose their effect, so there are serious energy constraint in wireless sensor network. In this paper, the specific energy consumption of sensor nodes is studied by experiments, the energy experimental hardware platform is established with the low power consumption SCM MSP430F135 and wireless transceiver chip CC2420, the relationship of energy consumption and communication distance for nodes is discussed, and the energy management strategy of effective wireless greenhouse monitoring system based on dynamic power management is put forward and discussed, the mobile structure is adopted in the convergent nodes. The experiment and simulation results show that the energy consumption of nodes is proportional to the third power of communication distance, the communication distance of sensor nodes can greatly shorten, and energy consumption is saved.

Abstract: To automatic test the function and performance of an airborne radar, changeable test adapter is adopted to implement the hardware and software design of the automatic test set of the antenna, transceiver and indicator of the radar based on AT89C52. Problems such as t the different types of interfaces, the various kinds of signals and the test of microwave signal are solved successfully and the objectives of resource sharing and automatic test are realized. The test software is designed by modular structure, and with the help of automatic test set hardware, the required test items of the radar system are experimented and the test process control succeeded. Experiment results show that the automatic test set performs steadily and the results meet the requirements of the airborne radar. The set has the advantages of intelligent, manageable and reducing artificial errors. It provides effective guarantees for radars maintenance, fault diagnosis and fault detection, and has a wide application prospect with low cost.

Abstract: In this paper a novel Support vector clustering (SVC) method for outlier detection is proposed. Outlier detection algorithms have application in several tasks such as data mining, data preprocessing, data filter-cleaner, time series analysis and so on. Traditionally outlier detection methods are mostly based on modeling data based on its statistical properties and these approaches are only preferred when large scale set is available. To solve this problem, in this paper we focus on establishing the context of support vector clustering approach for outlier detection. Compared to traditional outlier detection methods , the performance of the SVC is not sensitive to the selection of needed parameters. The experiment results proved the efficiency of our method.