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测试科学与仪器：英文版

测试科学与仪器：英文版

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Journal of Measurement Science and Instrumentation（《测试科学与仪器》）（ISSN1674－8042，CN14-1357/TH）是英文期刊，2010年创刊，季刊，CSCD收录期刊。
  • 发文量：279
  • 被引量：200
  • H指数：3
  • 开始收录时间：2010(1)
  • CNKI综合因子：0.261
  • 维普期刊影响因子： 0.41
  • 万方期刊影响因子：0.23
  • 创刊时间：2010
  • 国内刊号/CN：14-1357/TH
    国际刊号/ISSN：1674-8042
  • 发行周期：季刊
    邮发代号：-
  • 主管单位：中北大学
    主办单位：中北大学
测试科学与仪器：英文版-联系信息
  • 主编：熊继军;维克托
  • 电话：0351-3923306
  • 邮箱：jmsi@nuc.edu.cn
  • 地址：山西省太原市学院路3号
  • 邮编：030051
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测试科学与仪器：英文版 >2023年第3期

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  • 摘要：This paper proposes an algorithm that extracts features of back side of the vehicle and detects the front vehicle in real-time by local feature tracking of vehicle in the continuous images.The features in back side of the vehicle are vertical and horizontal edges,shadow and symmetry.By comparing local features using the fixed window size,the features in the continuous images are tracked.A robust and fast Haarlike mask is used for detecting vertical and horizontal edges,and shadow is extracted by histogram equalization,and the sliding window method is used to compare both side templates of the detected candidates for extracting symmetry.The features for tracking are vertical edges,and histogram is used to compare location of the peak and magnitude of the edges.The method using local feature tracking in the continuous images is more robust for detecting vehicle than the method using single image,and the proposed algorithm is evaluated by continuous images obtained on the expressway and downtown.And it can be performed on real-time through applying it to the embedded system.
  • 摘要：In order to reduce the noise and vibration of the diesel engine,it is crucial to exactly identify the engine noise source character.Based on "two-microphone" method,the sound intensity measurement of a vehicle four-stroke diesel engine was carried out in a hemi-anechoic chamber.Then the sound intensity contour maps were obtained from the measurement results and the main noise components of different frequencies on all the measurement surfaces were picked out to construct contour maps.By analysizing the relationship between the characteristics of contour maps and the space distribution of the engine compartment,the major sources of the exterior radiation noise of the diesel engine were identified.The results provided a creditable basis for improving the noise performance of the engine in the next phase.
  • 摘要：The effect of the microstrip bend on the propagation characteristics of a microstrip line was investigated based on the Finite-Difference Time-Domain(FDTD)method.The dispersive characteristics of a microstrip line with a bend are quite different from that of a uniform straight microstrip line.The effect of bend discontinuity on propagation constants deceases exponentially with the distance form the corner of the bend.This can be explained by the fact that the higher order modes excited by the bend discontinuities have intrinsic properties of exponentially decay with the distance from the bend discontinuities.This effect can be negligible(less than five percent)when the distance is beyond ten times of conductor strip width.The S parameters and propagation constants comparison between unmitered and mitered bends are also presented.The proposed method which takes advantage of the FDTD algorithm and the Root Mean Square Deviation(RMSD)analysis is also an effective way for analyzing the dispersion characteristics of other planar transmission lines.
  • 摘要：This paper presents an extended Dyna-Q algorithm to improve efficiency of the standard Dyna-Q algorithm.In the first episodes of the standard Dyna-Q algorithm,the agent travels blindly to find a goal position.To overcome this weakness,our approach is to use a maximum likelihood model of all state-action pairs to choose actions and update Q-values in the first few episodes.Our algorithm is compared with one-step Q-learning algorithm and the standard Dyna-Q algorithm for the path planning problem in maze environments.Experimental results show that the proposed algorithm is more efficient than the one-step Q-learning algorithm as well as the standard Dyna-Q algorithm,especially in the large environment of states.
  • 摘要：By utilizing the capability of high-speed computing,powerful real-time processing of TMS320F2812 DSP,wavelet thresholding denoising algorithm is realized based on Digital Signal Processors.Based on the multi-resolution analysis of wavelet transformation,this paper proposes a new thresholding function,to some extent,to overcome the shortcomings of discontinuity in hard-thresholding function and bias in soft-thresholding function.The threshold value can be abtained adaptively according to the characteristics of wavelet coefficients of each layer by adopting adaptive threshold algorithm and then the noise is removed.The simulation results show that the improved thresholding function and the adaptive threshold algorithm have a good effect on denoising and meet the criteria of smoothness and similarity between the original signal and denoising signal.
  • 摘要：Taking the accelerometer installation errors into consideration,the attitude optimization algorithm of Gyro Free Inertial Measurement Unit(GFIMU)is studied in the high spinning condition in this paper.A ten-accelerometer configuration is designed so as to establish a mathematical model to acquire the angular speeds in the case of installation errors.Precision of the algorithm is evaluated by using damping Gauss-Newton method.A large amount of simulation results show that if the accelerometer’s angle-installation errors maintain small(<5°),the errors of attitude angles can be limited within ±1°.Hence,the algorithm has a great applicable value in engineering.
  • 摘要：MIE is an important parameter to be used to rank the ignition risk of the combustible materials.Commonly used electric circuits for generating spark have been reviewed and their features are analyzed in detail.Attention to avoiding test errors is stressed.Ranking of ignition risk is suggested based on MIE data.
  • 摘要：Wireless Mesh Network has drawn much attention due to wide area service coverage with low system cost and being easy to install.However,WMN suffers from high bit error rate,which provides different link capacity among wireless mesh routers.The conventional routing metrics select the path based on link quality.The link with the best quality is preferred as the data transmission path,and thus all nodes likely select the same link,which leads to network performance degradation.This paper proposes a routing metric that considers the available bandwidth and the number of nodes suffering congestion in the path.It is confirmed that the proposed method provides higher network performance of reduced delay,reduced packet loss and increased throughput than conventional routing metrics.
  • 摘要：In this paper,virtual instrument technology is applied in the development of an electric parameter measurement system for mobile power stations.Virtual instrument technology is used to measure and analyze electric parameters of mobile power stations.The whole measurement system is composed of computer,data acquisition card and LabView virtual instrument platform.It can be used to monitor,record,and analyze electric parameters of sinusoidal alternating circuit.These parameters include voltage,effective value of current,phase differences,power,and etc.Experimental results show that this virtual measuring device satisfy the requirement of mobile power station monitoring and dynamic property analysis.Hardware and software design of the system will be discussed in detail.
  • 摘要：In the technique of robot-assisted invasive surgery,high quality image is a key factor of the visual navigation system.In this paper,the authors have made a study of the image processing in visual system.Based on the analysis of plentiful denoising methods,they proposed a new method(S-AM-W)which combines Adaptive Median filter and Wiener filter to remove the main noises(Salt & Pepper noise and Gaussian noise).The simulation results show that it is simple,well real time,and has high Peak Signal-to-Noise Ratio(PSNR).It was found that the new method is effective and efficient in dealing with medical image of background noise.
  • 摘要：This paper presents a 10-bit 20 MS/s pipelined Analog-to-Digital Converter(ADC)using op amp sharing approach and removing Sample and Hold Amplifier(SHA)or SHA-less technique to reach the goal of low-power consumption.This design was fabricated in TSMC 0.18 μm 1P6M CMOS technology.Measurement results show at supply voltage of 1.8 V,a SFDR of 42.46 dB,a SNDR of 39.45 dB,an ENOB of 6.26,and a THD of 41.82 dB are at 1 MHz sinusoidal signal input.In addition,the DNL and INL are 1.4 LSB and 3.23 LSB respectively.The power consumption is 28.8 mW.The core area is 0.595 mm2 and the chip area including pads is 1.468 mm2.
  • 摘要：Distortion is a technical indicator in the field of common voice signal processing.The design is a portable distortion degree tester,based on Field-Programmable Gate Array(FPGA,EP2C20)as the core,using harmonic analysis method which better solve the distortion problem of accuracy.It can achieve the signal transformation from the time-domain to the frequency-domain,and is widely used for signal spectrum analysis.All the components used in the design are low power,high performance,low drift and industrial grade components.The reference voltage sources of ADC and DAC have identical performance of high stability,high precision.The clock is the precise stable clock with FPGA temperature compensation.This project can get the cost-effective,high-precision,low power and portable design goals.
  • 摘要：A discrete fuzzy sliding mode variable structure controller was studied and designed for a class of electro-hydraulic servo system by means of the combination of sliding mode control theory and fuzzy control theory.Designed based on the exponential reaching law,parameter ε of conventional sliding mode controller is the key factor of system chattering,and is proportional to it as well.In view of this,fuzzy control theory was introduced into the design to ensure the real-time adjusting of parameter ε.Simulation results show that the system chattering is eliminated perfectly,and the dynamic performance of the control system is improved effectively.
  • 摘要：By combining the Back-Propagation(BP)neural network with conventional proportional Integral Derivative(PID)controller,a new temperature control strategy of the export steam in supercritical electric power plant is put forward.This scheme can effectively overcome the large time delay,inertia of the export steam and the influence of object in varying operational parameters.Thus excellent control quality is obtained.The present paper describes the development and application of neural network based controller to control the temperature of the boiler’s export steam.Through simulation in various situations,it validates that the control quality of this control system is apparently superior to the conventional PID control system.
  • 摘要：The evolution of chaotic state of Lorenz system on the familiar parameter space orbit is analyzed.Based on the principle of chaos suppression with nonresonant parametric drive,the model of detecting weak periodic signals in strong noise is built.According to the parametric equivalent relationship obtained using averaging method and renormalization method,the critical values of detection parameters are determined,which lead to a sudden change of system dynamical behavior from periodic orbit to stable equilibrium point.Simulation results show that weak periodic signals in strong noise can be detected accurately with the proposed system.The method can obtain accurate range of parameter threshold through theoretical analysis,and the detection criterion is rather simple,which is more convenient for automatic detection.
  • 摘要：Recently,the use of ubiquitous sensor network technology has spread vastly.The ubiquitous sensor networks are widely deployed in factory automation as they provide effective measuring solution for instruments.The wired/wireless network module,which provides the interface to connect to the u-sensor network,is needed but there is no perfect standardization about the interface.In this situation,the interface compatibility between measuring instrument can be maintained using the IEEE1451 international standard.In this paper,the Wireless Transducer Interface Module(WTIM)based on IEEE1451.5 was designed.It connects to the measuring instrument,like the multi-meter,power meter,and etc.,to support the RS232 interface.As these devices cannot connect to network without a module,we use the WTIM to help these devices connect to network system.Its function was verified through the ubiquitous network connection and data transfer between monitoring PC and measuring instrument.This technology is expected to reduce cost in order to construct the wireless industry automation system using existing devices.
  • 摘要：A design of arbitrary waveform generator using NI PXI-5412 module(an arbitrary waveform generator)was provided in this paper,based on virtual instrument technology and LabVIEW.The generator can produce standard function waveforms,such as sine,triangle,square wave with adjustable amplitude and frequency.It can also produce arbitrary waveforms of different data files importing by Analog Waveform Generator Software.A heart electric waveform was set as an example of arbitrary waveform generation.It has practical value,because the standard functions and heart electric waveforms generated by the generator can be used in laboratories.
  • 摘要：Along with the development of biomedical engineering,negative pressure aspirator is more and more widely applied in clinical treatment and patients rescuing.The study of negative pressure aspirator is an important goal pursued in emergency treatment,because it can boost aid success.Given this need,this device based on MXT8051 single-chip is developed.The device can use Pulse Width Modulation(PWM)signal to drive the motor of negative pressure pump and it can adjust the motor’s speed through the Proportional Integral Derivative(PID)algorithm to realize the setting negative pressure rapidly,accurately and stably.The control requirement is accomplishedthrough the man-machine interface.This device has the advantage of simple operation,low cost and good practicability.
  • 摘要：Image denoising is indispensable for image processing.In this paper,image denoising algorithm based on Nonlocal Means(NLM)filter is proposed.Recently,abundant enhancements based on NLM filter have been performed.However,the performance of NLM filter is still inferior to that of other image processing approaches such as K-SVD.In this paper,NLM algorithm with weight refinement is utilized for image denoising.Weight refinement is performed to thoroughly take advantage of self-similarity of the image.Experimental results show good performance of the proposed method.
  • 摘要：This paper presented an individual recognition algorithm for human iris using fractal dimension of grayscale extremums for feature extraction.Firstly,iris region was localized from an eye image with modified circle detector stemmed from Daugman’s integro-differential operator.Then,segmentation was used to extract the iris and to exclude occlusion from eyelids and eyelashes.The extracted iris was normalized and mapped to polar coordinates for matching.In feature encoding,a new approach based on fractal dimension of grayscale extremums was designed to extract textural features of iris.Finally,a normalized correlation classifier was employed to determine the agreement of two iris feature templates,and the feature template was rotated left and right to avoid the interference from rotation of eyes and tilting of head.The experimental results show that fractal dimension of grayscale extremums can extract textural features from iris image effectively,and the proposed recognition algorithm is accurate and efficient.The proposed algorithm was tested on CASIA-IrisV3-Interval iris database and the performance was evaluated based on the analysis of both False Accept Rate(FAR)and False Reject Rate(FRR)curves.Experimental results show that the proposed iris recognition algorithm is effective and efficient.
  • 摘要：在这份报纸，我们在场自治杀虫剂喷洒并且采样机器人用绝对本地化 system.Design 和本地化系统的实现在温室工作来自其各个 RF 单身者接收装置和一个超声的 transmitter.The RF 单身者镇静的烽火系统的用法的为一根栏杆的本地化的一个方法接收装置得到同步从活动机器人的信号，和超声的传输器送超声的信号。
  • 摘要：自动化多范围 multipliers (范围电阻器)系统被建立因为由使用热电压 converter.It 的 AC 电压大小被选择自动地执行适当更多样地，范围其电压包含电压没有通过新设计 system.It 手工地改变它，被测量，通过控制的一个微控制器由控制部分组成由通过在一个电路的电子继电器的指定准备 LabVIEW 节目和切换的部分作为清楚地
  • 摘要：A distributed feedback fiber laser based Bragg grating vibration sensor system is proposed.Demodulated by using an unbalanced M-Z interferometer,experiment demonstrates that the system runs at a sensing sensitivity of about 257.2 rad·s2/m and a resolution of 4.2×10-5 m/s2 for monitoring acceleration.Experimental results show that the phase-shift changes with the acceleration linearly.
  • 摘要：A novel method to infer the finger flexing motions of various arm postures is proposed.From the gyroscope signal,the authors recognized forearm posture using K-means clustering method.Then finger motion inferred.For finger motion inference,Gaussian model of information entropy and maximum likelihood method was utilized.Experimentally it is obtained that the average recognition rate with the forearm posture inference is much higher than those without the inference by 30.7%.
  • 摘要：This paper presents a new method based on ontology formation and fuzzy recognition of digital pictures.Ontology creation and document indexing are well-known bottlenecks for integrating semantic services and for the Semantic Web,and thus the new method will be able to make automatic creation of the fish geometric ontology and automatic indexing to existing Semantic Web.Fuzzy set and fuzzy recognition are used to decide wheter a new fish picture belongs to an existing training set,here with the carp as an example.Training samples are used to set up fuzzy set and membership functions.The existing way of fish ontology formation can be integrated with the new method and the existing work for fish web can be used.
  • 摘要：Speech coding techniques have been studied not only to reduce the complexity and bit rate but also to improve the sound quality.CELP type vocoder,used as standard,supports the great sound quality even low bit rate.In this paper,the preprocessing of input speech to reduce the bit rate is different from the conventional vocoder.Different kinds of parameter are used for the preprocessing compared with the other parameters to find the more appropriate parameter for the vocoder.The parameters are used to synthesize the speech not to encode or decode for coding technique so we proposed the simple algorithm not to have the influence on the processing time or the computation time.The parameters in the preprocessing step are speaking rate,duration,and PSOLA technique.
  • 摘要：In this paper,a group of methods in reducing Peak to Average Power Ratio(PAPR)in 3GPP-LTE uplink Single-Carrier Frequency Division Multiple Access(SC-FDMA)using Constant Amplitude Zero Auto-Correlation Sequences(CAZAC)sequences were proposed.The authors discussed the methods of reducing PAPR using pilot sequences and detailed schemes.Then they investigated several CAZAC sequences,mainly about phase shifted sequences,such as Chu sequence,Frank sequence and Golomb sequence.They also compared the differences between various kinds of pilot sequence positions.Compared to simple binary sequences,CAZAC has a great improvement in peak power reduction.With respect to pilot sequence orders and pilot density,all three CAZAC sequences have similar performances,which is an advantage in designing SC-FDMA systems.
  • 摘要：By introducing a small-caliber deep well rescue robot,a hold-hug pattern rescue mechanism was brought forward.In order to reduce the volume,the under-well rescue mechanism is modularizing designed.At the same time,the audio and video systems,the illumination system and the ventilation system are expatiated.The rescuing robot can rescue the falling person in the deep well,it can save much manpower,material resources and time.It’s really an ideal rescue device for the small-caliber fall.
  • 摘要：This paper presents an optimal trajectory planning method of the dual arm manipulator using Dual Arm Manipulability Measure(DAMM).When the manipulator carries an object from a certain position to the destination,various trajectory candidates could be considered.To select the optimal trajectory from the several candidates,energy,time,and the length of the trajectory could be utilized.In order to quantify the carrying efficiency of dual-arms,DAMM has been defined and applied for the decision of the optimal path.DAMM is defined as the intersection of the manipulability ellipsoids of the dual-arms,while the manipulability measure indicates the relationship between the joint velocity and the Cartesian velocity for each arm.The cost function for achieving the optimal path is defined as the summation of the distance to the goal and inverse of this DAMM,which aims to generate the efficient motion to the goal.It is confirmed that the optimal path planning keeps higher manipulability through the short distance path by using computer simulation.To show the effectiveness of this cooperative control algorithm experimentally,a 5-DOF dual-arm robot with distributed controllers for synchronization control has been developed and used for the experiments.

    测试科学与仪器：英文版的期刊信息

    • 创刊时间：2010
    • 地区：CN
    • 语言：中文
    • 热门主题：英文 BASED_ON USING DESIGN 数据收集 自动化系统 LABVIEW 数据处理 MEASUREMENT FPGA
    • 学科分类：

    测试科学与仪器：英文版的获奖情况

    测试科学与仪器：英文版的收录情况

    • • 文摘杂志
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    • • 中国科学引文数据库（2015-2016）
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    • • 中国科学引文数据库（2019-2020）
    • • 哥白尼索引
    • • 日本科学技术振兴机构数据库

    测试科学与仪器：英文版的投稿信息

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    • 邮编：030051
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    • 邮箱：jmsi@nuc.edu.cn
    • 期刊栏目：测试理论和技术；信号处理；网络与通信技术；机器人；图象处理；控制理论与技术
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