Research on status online monitoring techniques of substation time synchronization based on reverse network measurement algorithm

In wireless sensor networks, for improving the time synchronization perfromance of online monitoring and application of ZigBee protocol, a scheme is designed. For this objective, first of all, the ZigBee protocol specification is summarized, a profound analysis of the hardware abstraction architecture of TinyOS operating system is made; the advantages of the ZigBee protocol compared with the traditional radio technology are comparatively analyzed. At the same time, the node design block diagram based on CC2430 and related development system is provided. In the TinyOS2.x operating system, we analyze CC2430 application program abstract architecture, and on this basis, give the realization process of program design. The research results showed that we achieve an on-line monitoring system based on ZigBee protocol, which has realistic significance of applying ZigBee protocol in wireless sensor network of electrical equipment online monitoring. Based on the above research, it is concluded that the online monitoring system can collect the temperature parameters of the monitored object in real time that it can be widely applied in wireless sensor networks.

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Scale-up from microtiter plate to laboratory fermenter: evaluation by online monitoring techniques of growth and protein expression in Escherichia coli and Hansenula polymorpha fermentations

Microbial Cell Factories ◽

10.1186/1475-2859-8-68 ◽

2009 ◽

Vol 8 (1) ◽

pp. 68 ◽

Cited By ~ 63

Author(s):

Frank Kensy ◽

Christoph Engelbrecht ◽

Jochen Büchs

Keyword(s):

Escherichia Coli ◽

Protein Expression ◽

Online Monitoring ◽

Hansenula Polymorpha ◽

Scale Up ◽

Microtiter Plate ◽

Monitoring Techniques ◽

Expression In Escherichia Coli

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Research on Fast Application Layer Tree Multicast Algorithm Based on End-to-End Measurement

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.159.46 ◽

2010 ◽

Vol 159 ◽

pp. 46-50

Author(s):

Xin Hai Wang

Keyword(s):

Network Measurement ◽

Measurement Technology ◽

Application Layer ◽

Random Measurement ◽

Measurement Algorithm ◽

Covering Tree ◽

Path Measurement ◽

Simulation Results ◽

End To End ◽

Fast Application

Application Layer Multicast (ALM) is more flexible than that in IP layer and easy to optimize for specific applications, so the research on it has become a hotspot. Aiming at the problem of most ALM protocol ignoring bandwidth of covering tree, the paper presented a new heuristic algorithm Max-Delta, which inferred the underlying link topology using end-to-end measurement technology. On the basis of this, a kind of Fast Application layer Tree (FAT) algorithm to construct covering tree was proposed to meet the requirements of bandwidth. In addition, the algorithm's time complexity was also analyzed. Simulation results show that Max-Delta algorithm can obtain network topology accurately with less network measurement times comparing with random measurement algorithm and longest path measurement algorithm.

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