The Remote Monitoring System In The Computer Room Based On Embedded Ethernet

The remote monitoring system in the computer room is one of the important ways tocomputer room supervision,allowing the local PC to realize the monitoring and control ofthe environment and equipment in the remote computer room via internet. At present, mostof the remote monitoring systems in the computer room consider PC as the processing core;indicate the monitoring terminal to perform relative operations. However, this kind ofmodel is inherent with the problems of high energy consumption and high hardware costand so on. Moreover, the embedded Ethernet technology has been masterfully andskillfully applied in the field of IPC, which provides a valuable opportunity for theresearch and development of the embedded Ethernet monitoring system in computer rooms.Meanwhile, entrusted by the Freescale Company, the embedded laboratory in SoochowUniversity has conducted an in-depth research into the application of K60. In terms of theabove-mentioned elements, the study proposes a design based on K60for remotemonitoring system in the computer room which integrates the functions of environmentalacquisition, image acquisition, abnormal alarm, automatic control etc.Based on the extensive research on the working mechanism of K60, a detailedanalysis of the functional requirements of the monitoring system in the computer room andthe concept of embedded hardware component development, the paper designs thehardware system circuit that both meet the need of actual function and to reserve scalableinterface. In response to the environmental characteristics of the computer room, the papercompletes the design for electrical isolation and anti-electromagnetic interference ofmodules as AD acquisition circuit, image acquisition circuit, GSM circuit, the SDHCcircuit and Ethernet circuit etc.According to the concept of structured design in software engineering, the paperdivides the software system into three-layer system which consists of hardware-oriented driving program, TCP/IP protocol stacks responsible for communicational functions andWeb server programs complete with face-to-face interaction functions. According to thedeveloping concept of component-based software, the paper finishes the component designfor all function modules, so as to improve the repeatability and maintainability of theprogram. As for the problem of the data’s CUP occupation in transmitting data in TCP/IPstacks, this system adopts the technology of ’zero copy’ which realizes the zero copy ofdata transmitting in each stack. In order to save hardware resource, the paper makes simpledesign for protocol stacks on the basis of realistic requirements. The paper stresses the keyprogramming points of Web server, writes CGI programs, finishes the design for embeddeddynastic webpage; and solves the problems of face-to-face interaction without an operatingsystem.The system is arranged to undergo the test run in the LAN of the laboratory, andbasically realizes the functions of environmental acquisition, image monitoring andabnormal alarm in the environment of computer room. The experiments’ results show thatthis system is equipped with good stability and can be applied to the area of computerroom’s monitoring after necessary test and validation.