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Sensor Network Interface and Multisensor Fusion Technology; Sensor Network Interfaceand Multisensor Fusion Technology

Author: YanWei
Tutor: LiuGuoLiang
School: Harbin Institute of Technology
Course: Control Science and Engineering
Keywords: Network Serial Adapter Sensor networks Multi-sensor fusion EM algorithm
CLC: TP212.9
Type: Master's thesis
Year: 2010
Downloads: 68
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Abstract


With the development of network technology , remote data acquisition and control technologies are showing a trend of high demand . The RS232/RS485 protocol as the main means of transmission of multi-sensor system has been unable to meet the requirements of modern industrial control field , developed remote network monitoring and control system can achieve , and compatible with the original RS232/RS485 standard the equipment is imperative . In addition , in a complex multi-sensor system , in order to reduce the amount of network data transmission is necessary to carry out multi-sensor information fusion , the traditional fusion technology is the registration and fusion discrete consider , in fact , both are contact interaction . In response to these problems , the subject is given the appropriate solution , mainly include the following : ( 1 ) design a network serial adapter ; It is a general-purpose network switching equipment , user devices only need to have the RS232 interface , you can use the adapter for networking . The virtual serial adapter , network data and serial data conversion package to a virtual serial port driver so that end users only need to use serial programming , you can achieve the network interconnection of serial devices , greatly reducing the user software design difficulty . The network type serial adapter includes both hardware and software , the hardware part as the core the eight processors ATmega128L microcontroller , adding a special network protocol stack chip the W5100 , 10/100Mbps Ethernet connection . The software part is composed of two parts by the end of the adapter firmware and computer end virtual serial port driver and network data communication between the virtual COM port and firmware . The firmware program designed adapter management program through the RS232 port on the adapter configuration parameters . (2) multi-sensor information fusion technology research; multi-sensor based on the expectation-maximization registration and fusion method , using an algorithm to simultaneously make the sensor registration and fusion , are given in the E step the state is given in the M step estimates of the registration parameters . Finally, the use of Matlab simulation experiments of a target tracking system .

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation components,parts > Transmitter ( converter),the sensor > Sensor applications
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