干电池电性能测试仪的研制

本测试仪以MCS-51系列单片机为核心，可对干电池进行脉冲、间歇放电和连续放电等3种模式的测试；实现同一放电模式下的多种不同放电方式；具有打印功能和rS232C接口，可进行远程监控

Design and implementation of testing platform of small form-factor pluggable transceiver based on LabVIEW

介绍了一种利用lAbVIEW构建SfP(SMAll fOrM-fACTOr PluggAblE)光模块测试平台的方法。测试平台通过读写计算机并口来映射地址上的数据,控制并口端口的逻辑电平实现计算机并口模拟I2C总线。计算机利用模拟的I2C总线与SfP光模块实现通信。分析了生产者/消费者结构队列状态机并用于设计中,该设计模式可以及时响应前面板动作或外部事件,并且使得状态机的状态变换更加灵活多变。This paper introduces a method of constructing a SFP(small form-factor pluggable) transceiver testing platform by using LabVIEW.The testing platform controls the logic level of parallel port to simulate I2C Bus by reading and writing the data of address which map to the parallel port.The computer can attach to the SFP transceiver by means of the I2C Bus.This paper also analyzes and applies queued state machine-producer consumer architecture,this kind of design style can respond to the action of front panel or external happening without delay.What's more,it can make transformation of state more flexible and changeable

Comprehension and Application of Thevenin's Theorem

本文从电路等效变换的本质出发,在理论层面上剖析戴维宁定理的重要性,分析戴维宁等效模型的建立方法,讨论戴维宁等效电路存在的局限性及解决方法,进一步,通过实际应用实例,加深对戴维宁定理运用的理解。Based on the essence of the transformations in the equivalent circuit,this paper underlines the importance role of Thevenin's theorem on the theoretical level,and elaborates the establishment method of the Thevenin's equivalent circuit. Moreover,the limitation of the equivalent model is emphasized and analyzed with Norton model. The examples of practical application are illustrated to deepen the understanding of Thevenin's theorem

Design of FDL Battery Service Output Test Equipment

The titled test equipment is designed based on the microcontrollor MCS 51.It can be use for three models of pulse test, pause discharge test and continuous discharge test. It works on many forms with one model by entering different parameters. It has not only printing function, but also ICL232 interface, and can be controlled at a long distance

The Application of Neural network in the Analysis and Prediction of Earthquakes

为了探索人工神经网络应用于地震分析预报的可能性，以福建及其周边地区地震活动为例，采用b值、地震频次、地震能量释放、空间集中度4项地震活动性指标作为神经网络的输入，用具有S-型特性函数的bP网络对由每年地震的活动指标组成的标准样本进行训练，由训练结束后的权值和阈值及待预报样本的因子测值计算出网络输出值，作为地震活动性的预测.结果表明，用神经网络可以在一定精度范围内使震级预报的内检符合率达100%，在例子中，外推预报准确率达88%以上.To explore the possibility of application of neural network in analysis and prediction of earthquakes, we input the following four quota of seismic activity,i.e., b value,frequency, energy release and intensity of the earthquakes in Fujian province and the areas around, and then,use BP network with S model characteristic function to exercise the standard samples coming from the annual quota of seismic activity.After the exercise, we use the weight value, the threshold value and the factorial measurement value of the sample to be predicted to calculate the network output value, basde on which we give the prediction of seismic activity.The result indicates that this neural network can,to a certain extent achieve 100% accuracy of the intrapolated earthquake prediction and 88% correctness in the extrapolated earthquake prediction

The RC Sinusoid Oscillator and Voltage Controlled Frequency RC Sinusoid Oscillator Realized by The Second generation Current Conveyor

提出由单块第二代电流传输器（CCⅡ）构成的rC正弦振荡器和压控振荡器.This paper describes the realization of RC Sinusoid oscillator and voltage controlled Frequency RC sinusoid oscillator by employing only a single second generation current conveyor

A region-varying and step size-varying LMS adaptive algorithm based on computational verb rules

Conference Name:2012 7th International Conference on Computer Science and Education, ICCSE 2012. Conference Address: Melbourne, VIC, Australia. Time:July 14, 2012 - July 17, 2012.University of MelbourneThis paper presents a region-varying and step size-varying LMS adaptive algorithm based on computational verb rules. This method allows the step-size 渭 to be adjusted by the error signal e based on the predefined computational verb rules. What's more, the variable region of 渭 is adjusted according to the variation of e, and the factor expand and contract is a function with two variables, error signal e and it's variation ec. Compared with the conventional LMS adaptive filtering algorithm, this algorithm gives attention to the three performance indices below, initial convergent speed, time-varying track ability and constringent precision. 漏 2012 IEEE

A Second order Current Filter Realized by Using Current Conveyors

提出一种由电流传输器实现的二阶rC低通、高通、带通电流滤波器并分析电路的无源灵敏度和有源灵敏度.该电路容易级联而不需附加匹配装置This paper deals with a second order RC lowpass,highpass, bandpass current Filter realized by using current conveyors.The passive and active sentivities of the circuits have been investigated.The proposed current Filter can be easily cascaded without matching circuits

Research and analysis of routing algorithms for NoC

Conference Name:2011 3rd International Conference on Computer Research and Development, ICCRD 2011. Conference Address: Shanghai, China. Time:March 11, 2011 - March 15, 2011.The Network-on-Chip has been recognized as a paradigm to solve System-on-Chip (SoC) design challenges. The routing algorithm is one of key researches of a NoC design. Its importance and effect on the performance of the network is accordingly cardinal. High-performance, load-blance, deadlock-free and livelock-free, fault-tolerant are the desirable properties of a routing algorithm for NoC. In this paper, we summarize routing algorithms used for NoC by simply comparison and analysis,and give the merits and demerits of some routing algorithms. ? 2011 IEEE

Storing of Transient Signal from a Transient Converter in a Disk of Computer

　TCH-4000S瞬态记录仪,能读取(0.05 μS~0.10 M S)x4096 的瞬间信息, 并保存在寄存器中, 后以不同的速率绘图或经d/A 转换输出,设计并行接口电路,编制软件,把寄存的数据在微机中存盘,为瞬态信息的研究提供捷径.Model TCH-4000s transient converter is able to read a transient signal ( 0.05 μs～0.10 m s)×4096 and further to store the analog events in a sem iconductor digital m em ory.The stored digitaldata are subsequently recorded by an X-Yrecorderorreconverted to analog data foroutputata differentspeed .Aparallelinterface circuithasbeen designed and a softw are has been developed for storing the data in a disk of com puter.It provides conve- nience forthe research oftransientsignal.福建省自然科学基金!(A97006