Based on the hardware platform of ARM processor of S3C44B0X,this systemic design builds a webserver based on embedded operating system and realize network connection in embedded system by means of porting μC/OS-Ⅱ and TCP/IP stackAt the beginning of this thesis, the development of embedded system is introduced.
Finally,by using the general means of network connection among modules the logic relationship of system connection is described with a pipe duct equation being used to effect a refined quantification of correlation relationship of variables among modules.
By the construction practice on the stone engingeering blasting project,summarize the link of detonator network and it's construction method,propose a new kind of new blowing-up network with detonator network.
This paper introduces a distributed monitoring and controlling system based on economical PLC network which has being used for the lubrication of axle bush of ball mill. In the system whose structure is 'IPC+NETWORK+PLC', 'Kingview'software is used to develop program in IPC and FX2N PLC is used as controller connected with the former by RS485 network.
CNC lathes fitted with network are connected to classroom computer for simulation of CAD/CAM so as to automatically generate a machining program with CAD/CAM. Test proves that correct program can be transmitted to the lathes so that machining with automatic programming can be achieved.
Furthermore, by computer and network technology, it is possible to join the central monitoring system with HIS network in hospital to realize long distance transmission and long distance interview of patient's information and to make active help for long distance treatment.
By way of example, tracking of the state of a network connection under TCP is given.
Simulation results show that SAREL algorithm could achieve better performance in packet delivery ratio, especially when network connection ratio is average.
The conception of trusted network connection (TNC) is introduced, and the weakness of TNC to control user's action is analyzed.
Using specially developed software, the time-to-display (TTD) of different image types was measured with up to 16 concurrent PCs for various combinations of processor, random access memory (RAM), network connection and image compression.
Only with a 10-Mbit/s network connection or with lossy compression were TTDs above 5?s obtained.
The paper proves a theorem of active multi-terminal networks, suggests a "reciprocal principle" , and derivea some rules of operating connection-connection rules, such as rules of parallel connection and series connection of multi-terminal networks, It can be used to reduce any time-invariant multi-terminal networks.
In order to improve the results of experimental methods and parameter criterion methods of connection regularity of two- port networks, this paper gives a set of concise regularity parameter criterions with proofs, demonstrates how to determine these parameters, and derives the relationships among them. Several notes on applying the formulas are pointed out.