Abstract:The sense,priciple and method of using the fiber Bragg grating for dynamic strain measurement are described in this paper. Two methods of using the fiber Bragg grating for wavelength shift demodulation are proposed when it is employed in the dynamic strain measurement. One is based on the fiber Mach Zehnder interferometry which is the dynamic phase demodulation suitable for high frequency bandwidth dynamic sensing and measurement and the other is the direct detection of the Bragg wavelength by DWDM with limited frequency bandwidth or medium frequency responding.

Abstract:This paper introduces a measuring method for the crosspoint of three space turning spindle axises.The uncertainty of measurement is analysed also.

Abstract:Measurement of non contact alignment with static photoelectric microscope improves the precision of aim and offers the reliable base of automeasurement.Combining with the alignment principle of the photoelectric microscope and establishing the mathematic model,the diameter of the inside pore can be measured.

Abstract:The method of designing the environment ensuring equipment for keeping the metrological verification working condition is presented in this paper.This equipment may realize the measurement and control of temperature and hurnidity in the lab.Its convenient communication interface makes it easy to connect with the computer.Owing to additive multi point time control circuit,preheating instrunment and equipment in advance and the increasing efficienty are realized.

Abstract:An aero engine inlet pressure distortion measurement and control system based on VXI bus is introduced in this paper.The data continuous store,the real time multi display and the real time calculation of composite distortion factor W have been realized at the same time of high speed acquisition.The functions of this system have been validated through experiment.

Abstract:In the process of heating up and warming up various industrial die,the technology of intermediate frequency inductance is adopted.The related technology about the temperature test of die and the heating up technique of automatic controlling is introduced. The main characteristic of testing technology and the problems are discussed and analyzed.

Abstract:This paper describes a relative spectrum responsibility testing system of infrared focal plane array developed by the 41st research institute of electronic.This system uses single optical channels substitude measurement methods,it is flexible and expandable with pattern generator,bias source,clock driver and data acquisition cards that were developed by ourself ,it can satisfy the needs for measuring various devices.

Abstract:Point to some turbofan aircraft engine,the constitution,the characteristic and the function of AYF are introduced in this paper.Its performance has achieved the internal advanced level.Having advanced technique,excellent performance and perfect function,it has some military significance and economic benefit.

Abstract:In this paper,the error source of teeth dividing table measuring the polygonal prism is analyzed.The measuring mathematics model is established.The combined standard uncertainty and the expanded uncertainty of this standard are evaluated.And the evaluating freedom is given.

Abstract:The construction of the calibration system of mass spectrometers for partial pressure,its principle and measurement methods also are introduced.In addition, the uncertainty analysis of partial pressure measurement and sensitivity calibration are presented.

Abstract:Application of PLD(Programmable Logic Device)to measurement and control system is analyzed.Compared with former electronic design methods,using PLD can simplify the design of the measurement and control system,reduce the area of PCB and miniaturize the whole system. Furthermore,some complex arithmetic can be carried out by the PLD so that the system function is greatly enhanced.At last the related project examples are given.

Abstract:The questions about setting up the measurement standard of chemical metrology are discussed and the proposition is given in this paper.