Abstract:From the influence of radiation rate with radiation thermometry on measuring temperature, the development and application of multi-colour radiation thermometry are discussed, and the advantages and disadvantages for different treatment methods are compared.

Abstract:The high frequency grating is applied into the measurement of mechanical parameters.The point by point in plane strains,out of plane displacement and rigid body rotations can be obtained by measuring the displacements of diffraction fields of the specimen grating before and after loating.Using CCD as the image sensor,the above deformation values can be input into the computer via I/O board and data processing can be made automatically.

Abstract:Measuring velocity by correlation method has developing for years. Because of the large correlation calculations, calculating velocity is limited and real time feature and accuracy are not good for large velcity system (more than ten ~tens m/s). This paper introduces correlation calculating method with the hardware, and the constuction of hardware correlation instrument and 8098 interface block diagram are given.

Abstract:The measuring instrument for non-rigid base line floating workpiece width measurement online is introduced. It consists of the light-electrical transformer,automatic sweeping light-electrical boide array, and data processing with microcomputer.

Abstract:This paper discribes the construction principle of the vertical eccentric instrument,measuring method and its error analysis.