Abstract:Smart Dust is an emerging technology come from tiny, wireless sensors. This paper mainly introduces the development and application of smart dust, and also discusses the problems of smart dust technology. Moreover, the authors point out several new development trends of smart dust.

Abstract:The characteristic impedance of GTEM cell is analyzed by three-dimension finite element method.The calculation model is the sect cut from the GTEM cell along the spherical wave direction.The optimized angle of septum is found through calculating the characteristic impedances for different sects and different angles.The optimum plan for correcting the septum is proposed,considering the effect of the thickness of septum.The(user's) program module for calculating the characteristic impedance is developed under the environment of ANSYS,which greatly improves the design efficiency.The method discussed in this paper approximate,perfectly to the real state of electromagnetic field distribution,so it's more accurate.

Abstract:A new method of frequency spectrum analysis using Power System Blockset(PSB) is presented.Based on the PSBFFTSCOPE function supplied by MATLAB,the input variable is reformed. This method can overcome the defect that the function can not be used to analyse the frequency spectrum of such signals sampled at variable step.And then the spectrum analysis range has been broaden in the PSB.The simulation results are accurate and indicate that the new method is feasible.

Abstract:A method of soft-sensing is put forward after the relation between spindle's power and load torque is analysed.The soft-sensing model based on BP neural network is built up,using the spindle's stator-voltage,stator-current,no load current and spindle speed as secondary variables.With an example of aviation engine clutch bearing test-bed torque measurement,the simulation is done for the soft-sensing model.It is shown from the result that the proposed method can satisfy some given precision requirements.And a good method is provided to solve the difficulty of installing the valuable torque sensor.

Abstract:Using the black-box testing method, we test the test software used in the data collection system. The running profile and test case are established by analyzing the software requirement and running performance, then the reliability testing is executed, and the software reliability about the input model is evaluated also.

Abstract:Through comparing three calculation modes of titrimetric analysis, a calculation method taking the chemical formula and its stoichiomotric number as the elementary entity is reasonable.

Abstract:Pointing to the non-linearity of the FOG with the change of temperature, a method of modeling for the temperature error of scale factor with BP neural network is proposed, and it can reduce the output error of fiber optic gyroscope. Meanwhile the modeling results of BP neural network for scale factor are compared with the traditional modeling results, it demonstrates that modeling for scale factor with BP neural network is very effective.

Abstract:Based on the calibrating device for micro accelerometer imported from Russia, this thesis is analyzes the influence that the foundation vibration causes to the calibration results of micro accelerometer, provides the method to dispel foundation vibration noise and method which identifies the static mathematical of acceleometer.

Abstract:The design of IRFPA crosstalk test system based on network is introduced in this paper. The principle and realization method of network controlling, accurate positioning and focusing, optimal DUT working status adjusting and noise reducing are presented in detail.

Abstract:A new kind of data acquisition instrument of flow calibrating instrument in field by using the standard flow meter has been developed. The article presents its design of hardware and software and function. The instrument is accurate, reliable and convenient for flow calibration in field.

Abstract:In order to check if the airoplane power supply quality reaches the national standard, the hardware and software for the ground experiments test system of power supply based on LabVIEW are discussed in this paper.

Abstract:Piezoelectric actuators are used widely in the field of precise positioning.But their hysteresis,creep and nonlinear characteristics make them difficult to be controlled.This article introduces the measurement principle of micro-displacement of piezoelectric ceramic based on strain gages signal used as feedback signal,and furthermore variable parameters PID control which has a upper limit and lower limit is introduced to make the precision and stability improved.

Abstract:This paper talks the principle about how to make the swept frequency RCS measurement. We configure the RCS measurement system based on the PNA network analyzer 8363A, then we remove the isolation errors by subtraction method of the time domain. At last, some results measured in the micro-wave darkroom are presented.

Abstract:A new method for measuring the returnloss of fiber optic components is introduced. To measure the returnloss of fiber optic components with this method, we can get a measurement result with little uncertainty, furthermore this method can resolve the trace to the source problem of the optic returnloss value of quantity.

Abstract:This paper mostly dissertates the half-auto intelligent measurement technology and the system structure, hardware selection, software design and using method of ZY4 model portable double electricity bridge. The uncertainty is evaluated.

Abstract:The principle for calibrating the current probe is introduced in this paper. And the analysis and evaluation of the uncertainty have been done in detail.

Abstract:This paper introduces the methods, process and conclusion of the evaluation and analysis of uncertainty of measurement of optical time domain reflect meter verification equipment. These are applicable for the analysis and evaluation of uncertainty of measurement establishing the metrological standards.

Abstract:This paper presents a design of virtual instruments based on PC/104 embedded computer system, which has the functions of measuring some electrical signal and time frequency signal. And it has functions of outputting different analog signals, impulse signal with different frequency, amplitude and different wave form. Owing to the high measurement accuracy and high accuracy of output signal, it can be used in measurement control and launch system for measurement and control of missile.

Abstract:Chroma measurement of light source is very important in many areas,and the UV-365 spectrophotometer is widely used in chroma measurement.In this paper,we develop a automatic chroma measurement system to compensate the shortage of that the UV-365 can't calculate the large number of measurement data and then the efficiency has been increased.We convince the feasibility of the system by testing a standard source in the end.

Abstract:The article introduces a module of air-borne data acquisition based on the microprocessor C8051F020. As one part of an air-borne data acquisition system, this module could capture many parameters when aircraft is in flight in real-time. It provides the basing data and information for flighttest. The configurations of software and hardware are given. The article introduces the method of sticking the accurate time label on acquisition data in detail.

Abstract:The paper introduces the feature of special testing equipment, present situation, site calibration of special testing equipment, automatic calibration essentiality and peculiarity. The calibration method and uncertainty of the special testing equipment are described in datail especially. The developing direction of the special testing equipment is presented.