Abstract:This paper briefly describes the function, installation and how to use the software on Windows 95 of PC - DIO-96 board, which is used for data acquisition, and supplied by National Instruments. It gives the program flow that run on Windows for accomplishing PC- DIO- 96's line,port and group application. It presents the details of application for the project of " Establish the large dimension etalon up to 60m", which include environment data acquisition and controlling motor.

Abstract:The simple and discrete sample method for measuring the root-mean-square, distortion,phase and other parameters of periodic signal with high accuracy is proved to be correct withmathematical method and origins of measuring uncertainty are pointed.

Abstract:The system of quick temperature measurement is introduced in this paper. This systemis suitable for applications in some special environments, in which the temperature is not measurable byconventional techniques. The system is proposed to be utilized in the processes of casting, forging,high frequency dielectric heating and porcelain sintering,

Abstract:介绍了表面粗糙度干涉图像处理和该系统以静态干涉图像处理技术对表面粗糙度检测的过程。该系统通过对一帧白光干涉图像的处理，可对Ｒａ值≤０．２μｍ的多刻线样板，试件表面粗糙度绝对、非接触、快速、自动地测量；该系统通过对白光和纳光二帧干涉图象的联合处理，以白光定位、纳光定度可对沟槽深度Ｈ≤５μｍ的标准单位刻线深度绝对，非接触，准确地测量。

Abstract:This paper presents the method of measuring large scale diameter based on laserscanning principle and describes its working principle and photoelectric of the system. The scanningvelocity characteristic of the laser scanning optical system is analyzed theoretically. It is also discussedthat the errors of the scanning velocity have the effect on its measuring accuracy in detail.

Abstract:The authors summarizes the present situation of verification (inspection) standard for the CMM, the brief introduction of ISO 10360-2 standard and the direction of research.

Abstract:The characteristic and principle of turbine flowmeter and the notable problems for its application are introduced.

Abstract:A method of data processing about the dynamic grab bucket scale is introduced in this paper. And its mathematical model is described in details.

Abstract:This paper discusses the accuracy of the type A standard uncertainty which is influencedby the times of repeated measurement and evaluated by its standard deviation. So its influence couldn'tbe neglected for high accuracy.

Abstract:By the analysis of engine cam lift error curve, distinguishing principle of evaluating thecam lift errors is presented according to the smallest condition so that the erroneous judgement causedby the different measuring standard is avoided.

Abstract:This paper introduces the principle and construction of tracing system used for contact thickness measurement on line. From practice the tracing system can be changed as the shape changes of plate to be tasted. The testing results reIate to the thickness of plate only. It give the test and control for thickness of the plate the on -line.

Abstract:Based on the ruler of defense metrology and the requirement series 9000 and supportingstandard ISO 10012. The idea of metrology assurance, administration operating object and runningsystem is proposed. This paper briefly introduces the type metrology assurance, administrationoperating object and running system.

Abstract:The research work conducted abroad in dynamic coordinate measurement with lasertracing technique during the past ten years are described in this paper. Several kinds of advancedtechnique are integrated in measuring system. Though its usages have almost been limited in thecalibration of robots, it has opened up the bright prospect for more wide industrial applications. It canbe asserted that this represents the new developing trends of metrology. Several measurementmethods, including the spherical approach, the triangulation method and the multi-lateration methodare described. We also illustrate the principles and structures of the signal - station system and themulti - station system (including tow -station, three - station and four - station system ). Finally,precision and accuracy the systems have already got or possibly get, and advantages as well asdisadvantages are analyzed.