作战指挥自动化系统用电子瞄准镜的设计

电子瞄准镜是单兵导弹雷达指挥系统的一部分.雷达系统对空搜索,发现和跟踪目标,并将目标的方位、高低等信息通过串口传给电子瞄准镜系统.电子瞄准镜系统由单片机W77E58,电子罗盘TCM-20,通信接口,EL显示屏组成.单片机作为中央控制器完成和雷达的串口通信,获取目标信息.电子罗盘获取发射筒当前所指向的方位,显示屏显示目标的方位、距离、航迹和射击筒方位信息.单片机与电子罗盘采用RS232通信、与雷达系统的计算机采用RS422通信,显示屏的驱动和显示是对SED1335的写操作.同时,给出了单片机的软件工作流程.     

基于单片机的GPS定位系统设计

系统采用GPS-25LP模块作为定位系统卫星数据接收处理芯片,模块接口简单,能方便的通过串口与单片机进行连接;系统中的8051单片机用于配置GPS模块并且接收GPS模块传送的位置和速度等数据信息,同时将这些信息显示到LCD显示器上;GPS模块可以提供多种数据信息,在本系统的基础上进行程序扩充便可以构成更加强的大系统。     

电子罗盘在无人机飞控器中的应用

数字电子罗盘HMR3000在飞行导航系统中的应用,首先判断接收的数据是否为起始位,是则开始采集数据,读取第2位,同时对采集到的数据进行保存,否则继续判断.通信单片机采集数据同时要判断是否为结束标志位,是则进行CRC校验,并对数据进行处理,处理后数据送至指定的存储位置.飞行姿态的数据流向为单向,即传感器将数据送到通信单片机,通信单片机将数据进行处理后写到指定的寄存器中,主单片机通过I2C总线将寄存器中的数据读出.     

照明片区网络化的设计

小区照明片区网络化设计,参照C-BUS将其分为小区层、栋层和房间层3层,上层收集处理下层信息并控制下层.并首先建立协调管理智能灯具控制节点网络模型,以单片机为核心的节点上利用其串口和无线通信模块实现房间层节点的网络设计,并预留网络扩展接口,以实现多区域的统一管理.房间层初始化程序包括串口及定时计数器初始化、读取本从机地址、采集本室内的人员及光强信息后上层命令开关照明灯.     

一种组合导航低成本地面验证技术

在常见的SINS/GPS组合导航地面跑车系统的基础上,提出一种低成本验证方案。在硬件上采用现有常用设备组成跑车系统,在软件上采取"自对准"方式,使用数字罗盘HMR3000与弹道倾角、弹道偏角作为姿态精度考察的基准,避免了研制专用跑车设备带来的花费高、周期长等问题。实践表明,该方案能够较准确验证组合导航输出的姿态角精度、速度及位置,达到了跑车试验的目的。     

经济型单片机开发系统的设计

基于MCS-51(8031)的经济型单片机开发系统,采用MCS-51汇编语言设计其单片机与微机串行通讯的接口程序.系统硬件包括程序和数据存储、输入/输出及通讯模块,软件则由监控主程序、键盘扫描与键值处理子程序、动态显示处理和通讯处理子程序构成,并通过RS-232标准通讯电缆与PC机连接.     

基于RoyalTek REB-12R的GPS信号显示器设计

基于RoyalTek REB-12R接收机的GPS信号显示器,利用MCU处理REB-12R输出信号并在LCD显示.开机时MCU串口初始化使默认值格式符合GPS,从TXA输出默认信号格式和输出信号格式.MCU接收GPS的ASSIC字符进入中断程序,然后判断数据起始位再送显示缓存.     

一种多功能通用异步串行UART接口的设计与实现

设计了一种多功能通用异步串行UART接口模块,它包括CPU接口模块、用于存储接收信息的接收FIFO模块、用于存储发送信息的发送FIFO模块和接收发送模块等;该UART接口具有3种工作模式：普通模式、FIFO模式和FIFO帧模式;这些模式及其通信格式可以通过软件配置来设置和选择;收发采用FIFO作为缓存,大大减少了UART接口对CPU的中断次数。该UART具有的强大通用性让用户可以更加方便地使用。     

串口通讯模块CP340在工业称重中的应用

西门子S7-300系统通过串口通讯模块CP340,以点对点的方式实现与赛多利斯电子秤进行通讯.其CPU采用314C-2DP,CP340采用RS-422/485,通讯协议为ASCII driver,接口为15孔串口模块.先定义CP340和电子秤的接口,在组态CP340通讯参数前,先安装CP340的驱动程序并自动集成在PLC编程软件S7中.PLC启动时先执行OB100,然后循环执行OB1.通讯程序编写在功能中,然后在OB1中调用相应的功能.     

多功能数字摄像系统的设计

基于FPGA的数字摄像系统由光学子系统、系统控制层、图像高速采集处理模块、音频采集处理模块、电源模块和与外设接口等部分组成.系统采用单MCU方案,以单片机作为中央控制器,用FPGA实现了实时图像处理和静止图像的数字特效处理,以及视频和静止图片压缩.     

Nitrosation and Nitration of Tetraacetyldibenzylhexaazaisowurtzitane

Tetraacetyldibenzylhitane (TADBIW) was subjected to debenzylation by nitrosating with inorganic materials available commercially to synthesize tetraacetyldinitrosohexaazaisowurtzitane (TADNSIW). TADNSIW was purified, and its structure was determined by FTIR, 1H NMR, MS and element analysis. The debenzylation reaction of TADBIW gave quantitative benzaldehyde as a by-product. This indicates that the reaction produces an imine cation as an intermediate. Hexanitrohexaazaisowurtzitane (HNIW) was prepared from unpurified TADNSIW with the yield over 96.0 % and the purity more than 98.0 %. And the mechanism of the reaction from TADNSIW to HNIW is proposed to be oxidation of nitroso and nitration of acetyl on the molecule of TADNSIW, This reaction system involved is simple, and the reaction can complete within a short time and under mild conditions. The product can be easily to separate and the waste disposed readily.     

A Robust Algorithm for Watermarking 2D Vector Maps with Low Shape-Distortions

The technique of watermarking has been introduced into 2D vector maps for many potential applications such as protecting the copyright of important GIS （geographical information system） data and tracing the data source of military maps. In most previous works, although the validity of the map data could be preserved during the embedding procedure, the shape-distortions of the map elements are usually neglected which would tend to degrade the invisibility of the watermarking schemes. A shape-preserving algorithm for watermarking 2D vector maps is presented in this paper. A 1D distance sequence extracted from the original map is adopted as the cover data instead of 2D coordinates. A watermark bit is represented by changing the distributions of the cover data. The embedding procedure induces lower shape-distortions than in former works. Experimental results indicate better invisibility of the proposed scheme, as well as its robustness to certain attacks such as map simplification, interpolation, additive noise and most geometric transforms.     

Open Rule-setting System Applied to Conceptual Design of Engines

Open rule-setting method advanced in this paper concentrates on providing designers of engines with a convenient way to express their design innovations and develop the expected prototypes in the early CAD stage, and constitute effective models for the following analysis process of CAE and CAPP. The problems arisen in the process of conceptual design with the traditional experience-based development method are analyzed. Based on those analyses, open rule-setting method is presented and some associated technical problems are discussed. The functional framework of open rule-setting system was built as software engineering methods. The speciality of the engine product as a kind of complex product and the requirement of the engine product based on its structural particularity to rule-setting system are considered carefully. A demonstration is supplied to illustrate how the open rule-setting method enhances the efficiency and quality of the engine conceptual design.     

Research on Linux Network Device Driver

By analyzing the working principle of Linux network device driver, discussing the Linux network driver structure and its key technologies, the general network driver structure and its design methodologies in Linux system are summarized. Through modifying the network device driver of Linux device driver 3rd version snull, c and improving the COW technology, the Zero-Copy technology in Linux （kernel version 2.6.11 ） is implemented. In the end, the success test tells us that the thorough analysis of network device driver is the foundation of many applications, and it also provides a certain improvement to a lot of real applications, even to military application development.     

Improvement and Experiment of the Reamer in Vibra Cutter Against Wave Edge of Titanium Sheet Alloy Parts

By analyzing the influencing factors of part quality making of sheet alloy of titanium by vibra cutter, the shape of upper reamer is set as cylinder and wedge-shaped form, and the lower reamer as plain and hemicycle form, and its main structural parameters are defined as well. Then it is validated further that such improved vibra cutter reamer can be used to process curve-edged parts of titanium alloy sheet. The experimental result shows that the titanium alloy sheet parts processed by above equipment have no sharpen angles for convex parts and evident crevasse of concave-edged part. In summary, such improvement can eliminate the free-waved edge and improve the manufacture quality of titanium alloy sheet parts greatly.     

Experimental Study on the Small Flyer Initiating Behavior of Fine-grained Explosives

The initiating behavior of fine-grained explosives by small flyer is studied. The diameter of small flyer in this device is 1 ram. The test results indicate that the granularity of explosives has great effect on its flyer initiating sensitivity.The flyer initiating sensitivity of the fine-grained explosives is higher and the critical initiating energy is lower than that of common explosives. For common explosive, the flyer initiating sensitivity increases as the density is reduced. But for the fine-grained explosive, the test results are exactly opposite.     

Algorithm for Multi-laser-target Tracking Based on Clustering Fusion

Multi-laser-target tracking is an important subject in the field of signal processing of laser warners. A clustering method is applied to the measurement of laser warner, and the space-time fusion for measurements in the same cluster is accomplished. Real-time tracking of multi-laser-target and real-time picking of multi-laser-signal are introduced using data fusion of the measurements. A prototype device of the algorithm is built up. The results of experiments show that the algorithm is very effective.     

Influence of Installing Error on the Surface Shape Precision of the Axial Symmetry Aspheric Workpiece in Lapping

A method to calculate the surface shape error, which is caused by the installing error between the workpiece and the lapping tool in the process of form lapping, is proposed. The mathematical model which the installing translation error influences on the workpiece surface shape error is established. The changing rule of the error is simulated through the calculating example of the paraboloid workpiece. The results indicate that the surface shape error of the workpiece is increasing with the increase of the installing translation error, it is also increasing gradually along the center point of the curve surface to the edge, and the influence is severer to the curve surface with great curvature than that of the small curvature when the translation error is the same.     

Experimental Research on Output Performances of Giant Magnetostrictive Actuator

The paper introduces the performances of magnetostrictive actuators and its applications, discusses the design methods for the structure and internal magnetic circuit of a giant magnetostrictive actuator, and makes tests on the output displacement and force characteristics for an actuator using homemade magnetostrictive material. The experimental result shows that the actuator has satisfactory output precisions and ranges in transient and stable states, and can be used in lowfrequency vibration control system of precise equipment.     

Robust Graded Sliding Mode Tracking Control for Low Speed Spinning Ballistic Missiles

The nonlinear dynamic model of spinning ballistic missiles is established during the first boosting phase of the missile. Based on the conventional backstepping sliding mode control and the assumption of a two time-scale separation of missile dynamics, a graded sliding mode controller is designed with two sub-sliding surfaces which have invariability to external disturbances and parameter perturbations, and a matrix which comprises three first order low pass filters is introduced to prevent ＂explosion of terms＂. Owing to the upper bounds of the uncertainties are difficult to obtain in advance, adaptive laws are introduced to estimate the values of the uncertainties in real-time. Eventually, the numerical simulation results given to show the proposed controller can ensure the steady flight of missiles.