The output stability of power supply for Heavy Ion Research Facility of Lanzhou (HIRFL) is signicant. Powersupply provides currents to magnets which produce the magnetic eld to constraint particles. So the output stab...The output stability of power supply for Heavy Ion Research Facility of Lanzhou (HIRFL) is signicant. Powersupply provides currents to magnets which produce the magnetic eld to constraint particles. So the output stabilityof power supply has a great signicance to the quality of beams. In order to test the stability of power supply, weuse a Fluke 8846A digit precision multimeter based on LabView platform of National Instrument Corporation.Remote operation of 8846A Digital Multimeter from a host, that is a terminal, controller, PC, or computer, isaccomplished by sending commands to it through one of its remote interfaces. The Multimeter is controlled remotelyusing Standard Commands for Programmable Instruments (SCPI), Fluke 45 or Fluke 8842A (8840A and 8842A)commands. The meter can be remotely controlled through the LAN port on the Meter's rear panel[1] We can sendSCPI commands to the Meter using network communicating controls provided by LabView[2]. This program couldbe used to test output stability of power supply of HIRFL.展开更多
In this paper, a network-based monitoring unit for condition monitoring andfault diagnosis of rotating machinery is designed and implemented. With the technology of DSP(Digital signal processing) , TCP/IP, and simulta...In this paper, a network-based monitoring unit for condition monitoring andfault diagnosis of rotating machinery is designed and implemented. With the technology of DSP(Digital signal processing) , TCP/IP, and simultaneous acquisition, a mechanism of multi-process andinter-process communication, the integrating problem of signal acquisition, the data dynamicmanagement and network-based configuration in the embedded condition monitoring system is solved. Itoffers the input function of monitoring information for network-based condition monitoring and afault diagnosis system.展开更多
The distributed computer system described in this paper is a set of computernodes interconnected in an interconnection network via packet-switching interfaces.The nodes communicate with each other by means of message-...The distributed computer system described in this paper is a set of computernodes interconnected in an interconnection network via packet-switching interfaces.The nodes communicate with each other by means of message-passing protocols. Thispaper presents the implementation of rendezvous facilities as highlevel prhoitives provided by a parallel programming language to support interprocess cornmunication andsynchronisation.展开更多
文摘The output stability of power supply for Heavy Ion Research Facility of Lanzhou (HIRFL) is signicant. Powersupply provides currents to magnets which produce the magnetic eld to constraint particles. So the output stabilityof power supply has a great signicance to the quality of beams. In order to test the stability of power supply, weuse a Fluke 8846A digit precision multimeter based on LabView platform of National Instrument Corporation.Remote operation of 8846A Digital Multimeter from a host, that is a terminal, controller, PC, or computer, isaccomplished by sending commands to it through one of its remote interfaces. The Multimeter is controlled remotelyusing Standard Commands for Programmable Instruments (SCPI), Fluke 45 or Fluke 8842A (8840A and 8842A)commands. The meter can be remotely controlled through the LAN port on the Meter's rear panel[1] We can sendSCPI commands to the Meter using network communicating controls provided by LabView[2]. This program couldbe used to test output stability of power supply of HIRFL.
文摘In this paper, a network-based monitoring unit for condition monitoring andfault diagnosis of rotating machinery is designed and implemented. With the technology of DSP(Digital signal processing) , TCP/IP, and simultaneous acquisition, a mechanism of multi-process andinter-process communication, the integrating problem of signal acquisition, the data dynamicmanagement and network-based configuration in the embedded condition monitoring system is solved. Itoffers the input function of monitoring information for network-based condition monitoring and afault diagnosis system.
文摘The distributed computer system described in this paper is a set of computernodes interconnected in an interconnection network via packet-switching interfaces.The nodes communicate with each other by means of message-passing protocols. Thispaper presents the implementation of rendezvous facilities as highlevel prhoitives provided by a parallel programming language to support interprocess cornmunication andsynchronisation.
