The Research And Design Of The Measure And Control Platform Based On Virtual Instrument

Virtual Instrument is the combine outcome between the computer and the instrument technology. It is the new development aspect of the instrument. The computer can replace the parts of the hardware, even the whole instrument. It leads to save hardware expenditure, reduce the research time and weaken the design difficult. The LabVIEW Virtual Instrument software exploder circumstance is involved based on the NI Co. in the paper. The technology and the way of the computer test and control are achieved based on the LabVIEW graphics mode programmed way and the integration exploder circumstance.Firstly, the Virtual Instrument is briefed introduced in the paper, including the form and the application of it. Then the graphics mode software exploder circumstance, the merits and the powerful functions of the LabVIEW language are showed in the paper. It is important that the computer test and control system design scheme in the Virtual Instrument exploder circumstance based on the LabVIEW are given. It includes the system frame, function, performance characteristic, design flow and design way.The 3-multitasking dispatch strategies based on LabVIEW test and control flat via setting priority and the select perform system. It is connected with the changeless time interval and the time block drive machine-made. It solves the met questions during high-speed data acquisition via circle buffer storage, high-speed disk storage technology, asynchronous read DAQ incidents.A LabVIEW test and control flat, namely, grate-fired furnace is designed. A brief friendly interface between the computer and man is realized. The process control, the picture supervise, the parameter setup, the parameter trend, given an alarm, database visit and the network communication etc are implemented based on LabVIEW the Virtual Instrument exploder circumstance in the paper. The multi-redundancy and multi-strategy control system form way based on the LabVIEW test and control flat is researched on the control project. A...