Application of vitual instrument for Tank Integrated Simulator Based-on LabWindows/CVI
Cue Qing 1 , Luo Jia1 , Zheng Changwei1 ,Wang Wei2, Huang Yibin1
1. Department of Equipment Command and Manage, Academy of Armored Force Engineering, Beijing, China, 100072 2. Beijing Institute of Special Vehicle, Beijing, China, 100072
13811772060@163.com
Abstract—The tank detection display system is an basic component of the tank integrated simulator. This paper describes the design process of virtual instrument for tank integrated simulator based on LabWindows/CVI. The hardware architecture and diagrams of system are introduced first. The software module architecture and design development process are given later. The research of several key issues is focused on, such as signal collection 、
communication in TCP model 、 control of operation load system as well as parameters tests in automatic condition. And finally practical interface images of tank virtual instruments which give a powerful technical support for detection and maintenance are achieved so that met the demands for training purpose.
Keywords: LabWindows/CVI, virtual instrument, tank integrated simulator, data collection
- INTRODUCTION
With the changes in military demand and the application of computer technology which is developing so fast, there is a number of increasing in the complexity and informational level of the tank information and control system; therefore, the use of tank integrated simulator especially with the operation training of digitized weapons and equipment which has become an indispensable part in the construction of armored force during recent years. Virtual instruments based-on LabWindows/CVI are important part of integrated simulator, have characteristics about high effectiveness and low costing.
- SYSTEM STRUCTURE
The computer network technique and theory of system simulation are used for the simulator. And this simulator has the basic practicing functions including communication
drive、and command which can satisfy the demands for
army. This system made by LabWindows/CVI is not only the window that displays the virtual instruments and performance parameters, but also a key basis for the crew to give a reasonable judgment and a correct manipulation in response to a wide circumstances range. The figure of control system for tank integrated simulator is showed below:
Figure 1. Framework for Simulator Control System
A. Simulation System for Control and Operation
Control and operation is the key issue used to afford cab operation sense realistically, which is also called operation load system. Cab operation sense is made for tank moving to the crew, mainly controlled by driver inputting actions to the simulator. Simulation system for control and operation is divided into two parts. One is hydraulic pressure system of tank cab, another is main console.
Figure 2. Hydraulic pressure system of tank cab and main console
Hydraulic pressure system of tank cab is used for special tank practice such as communication、driving and shooting.
It can simulate different postures when tank is moving on different terrains, and it is the base of main console which
can display、control and dictate messages for commander、instructor、driver and gunner represented by computers is the brain of all the simulation systems.
B. Control system of simulative instrument
Control system of simulative instrument is the important part of tank simulator. This system can afford and present different kinds of panel data in different situations controlled with varies dictations made by commander or instructor. The instruments used by the simulator are as true as the counterparts in real tank and the cab structure is strictly designed vivid. Different postures supplied by hydraulic pressure system can imitate real tank positions such as
shooting、driving in different terrains.
C. View simulation system
This system is made up by core parts: one is image process software system. High resolving capability images are processed by this system, and source-files are cut up by multi-channel 、 illumination adjust 、 verge congregation regulating 、overlapping、and handling vague. The other one is multi-channels output system which can represent clear pictures to the crews including gunner 、commander and driver at the same time after accepting pictures dealt with the image processing system.
The whole system simplifies the controlling process based-on functions and convenience that confirms the practice qualifies.
D. Structure design of system hardware
The core part of tank simulation is main console. All the simulator working signals are coming from operation load system which is composed by hydraulic pressure system and tank operation system mentioned above. The actions made
by operators let brake 、clutch and other control devices
moving measured by sensors, computers in main console analyze signals and transport them by Ethernet each other whose screen would show images corresponding with the actions. And console delivers analyzed signals by Adam to the instruments embedded in cab in real-time.
Figure 3. Structure design of system hardware
III. IMPLEMENT OF SOFTWARE BASED-ON
LABWINDOWS/CVI
A. Introduction above LabWindows/CVI
LabWindows/CVI is a mutual development software to face process of virtual instruments and test. It combines C language with special test tool. The software has powerful hardware control and signal analyzed capability fit for
develop software about measure、cont
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基于虚拟仪器技术的防空导弹发射设备自动测试研究
杨明，王洁，余晓辉，齐晓鹏
中国空军工程大学导弹研究所，中国，中国，713800，
电话： 86292829110电子邮件：杨敏123@sohu.com
摘要：发射设备是防空导弹发射系统的重要组成部分。由于其功能的可靠性和实现对发射结果的影响，所以对发射设备的测试是很重要的。摘要虚拟仪器概念作为一种新型的自动检测技术，适用于各种空间领域，包括各种防空导弹试验。摘要通过对防空导弹发射装备自动检测的现状分析，提出了一种基于虚拟仪器的新型系统模型;该系统使用PXI总线技术和LabVIEW程序语言。给出了自动测试系统的设计流程，设计了其硬件解决方案和软件解决方案。
关键词: 虚拟仪器;导弹发射设备;自动测试系统
第一章 绪论
摘要随着微电子技术和计算机科学的全面发展，基于虚拟仪器技术的自动检测系统，利用自动检测技术和计算机技术，成为数字仪器测试系统的一种新的测量和现代仪器热点。发射设备是防空导弹的重要组成部分，它被用来支撑和持有导弹，完成一些射击准备，在发射前进行定位，跟踪目标，并引导导弹正确起飞。其功能的实现和可靠性将直接影响发射结果。
在测试中，引导虚拟仪器技术到防空导弹武器系统，能够特别有效地进行测试和监测系统的各种武器参数，确保制导导弹成功发射。
本文将虚拟仪器技术应用于防空导弹发射设备的自动化测试,和PXI总线技术和虚拟仪器编程语言被应用于结构测试系统,测试的自动化程度和检测效率大大提高,系统在保证发射设备工作起着非常重要的作用。
第二章 虚拟仪器技术
虚拟仪器（VI）概念首先由美国国家仪器公司（NI）提出;VI是继智能仪器之后的新一代测试仪器。它是一个以计算机为基础的软件和硬件测试平台，它可以取代传统的测量设备，如示波器、逻辑分析仪器、发电机、频率分析仪器等;它还可以与汽车控制和工业控制系统相结合;并可建立免费的独家仪器系统。
A.虚拟仪器的基本结构
虚拟仪器概念将仪器分为三个主要部分：进口模块、出口模块和数据处理模块。其基本结构如图1所示。
图1虚拟仪器的基本结构
虚拟仪器的硬件包括计算机硬件和仪器硬件。计算机硬件和仪器硬件协同工作，用于收集信号，提供源信号和控制信号，包括数据采集卡、电压表、示波器、函数发生器等。虚拟仪器通过透明的计算机硬件和仪器硬件资源，汇集在一起，构成消费者需要的任何一种软件。应用软件开发环境、计算机数据分析能力和显示能力与仪器驱动相结合，为用户开发虚拟仪器提供了必要的软件实现和环境，其通常的开发环境是LabWindows和LabVIEW。
B.虚拟仪器的关键技术
PXI是仪器领域的PCI扩展，它开发了一种总线标准的PCI总线技术，使其适合于测试、测量和数据采集，从而成为一种新的虚拟仪器结构。PXI总线符合工业标准，所有优点都使PCI总线在机械、电力和软件方面充分发挥了作用。PXI系统的性能有许多标准特性，如固化，有助于缩短专业人员的开发时间，这也使工作更容易。其最显著的特征属性包括:系统的模块化,易于集成,容易加载,卸载和链接,以及大量的电气特性改善测试系统设备同步和触发精度,防空发射设备的自动测试系统是完全基于PXI总线技术。
LabVIEW是一种艺术化的编程语言，用于建立测试、测量和控制应用程序，它灵活、快速、容易升级。它为专业人员提供了大量的VI函数和子VI支持任务，还提供了一些特殊的使用程序，如PXI总线控制、数据分析、显示和内存，可以使用LabVIEW和硬件，如数据采集设备，图像设备进行通信。在LabVIEW开发平台上建立的程序称为虚拟仪器程序，即VI，它是LabVIEW的基本程序单元。LabVIEW可以使用图形模式编程方法;构建VI来完成约会测试任务。一个简单的测试任务可能需要一个VI;对于一个复杂的测试任务，可以将一般的测试任务分散到许多子任务中，构建子VI，并将这些VI与VI进行合并，以完成测试任务。
第三章 导弹发射装备自动测试系统设计
传统的防空导弹发射设备试验存在以下缺陷
（1）操作复杂;工作很辛苦，考试时间很长;
（2）根据测试人的工作经验，主观性非常高，测试准确度低;
（3）试验结果不能完全反映机械结构特征特性和发射设备的系统情况。
因此，为了满足现代战争武器装备的快速反应能力和可靠性要求，将虚拟仪器技术应用于防空导弹发射设备已经成为不可避免的趋势。
A.测试系统的设计流程
在对发射设备的功能和结构进行详细分析的基础上，根据系统的功能要求，确定系统集成需要的硬件配置，然后编制相应的测试程序，实现软件和硬件的最终调试。软件和硬件的设计遵循模块化设计原则。其中的软件设计将一个过程划分为一些子vi，改进了计算机内存的调试和使用。针对发射设备存在的问题，测试系统已引入故障诊断程序，可发现检测信号的问题，及时进行故障诊断。与此同时，错误允许对设计进行了考虑，采用了测试的信号隔离和波滤波，以保证系统具有良好的可靠性。
测试系统设计流程如图2所示。
图2测试系统设计流程
B.自动测试系统软件和硬件
通常，基于PXI的测试系统有两个硬件方案，MXI总线控制硬件方案和嵌入式计算机控制方式的硬件方案。MXI控制模式硬件方案具有较高的自然价格比，系统易于扩展和升级，适用于实验室和导弹发射设备的测试系统，测试系统原本完全采用MXI控制模式。MXI总线控制系统硬件包括各种测量仪器、数据采集卡、MXI-3接口卡、PXI主机箱、仪表模块、开关设备和电源。
该结构如图3所示。
图3测试系统硬件结构
在图中，导弹发射设备的信息通过测量仪器、数据采集卡和接口电路传递到PXI盒子。PXI box包括模拟和数字信号输入输出模块和GPIB控制器模块，用于确保测试系统测试来自导弹发射设备的信号。该箱将主控制计算机与MXI-3电缆连接，连接实现了导弹发射设备和主控制计算机进行对话，这样，专业人员就可以在主控制计算机的LabVIEW软件平台上进行导弹发射设备的各种测试。
测试系统软件包括计算机的主控制程序和PXI的程序工作，以完成数据采集和处理，以及通过PXI系统测试程序控制每个信号通道运行的主控制程序。在数据处理之后，根据信号状态的程序决定是否传输默认的诊断程序。系统软件如图4所示。以机械振动测试子vi的设计为例：本文应用LabVIEW软件进行机械振动数据处理。机械振动是导弹发射设备的常见问题之一，它对导弹发射设备有影响
图4系统软件结构示意图
工作和影响导弹发射的结果。在机械振动测试的主导下，可以获得发射设备的振动强度，在频率分析后，可以估计机械振动源，找到相应的降低机械振动的方法。机械振动测试的子vi前面板如图5所示。
图5振动试验程序前面板
根据防空导弹发射设备的不同工作条件，可以使用LabVIEW软件设计许多应用程序亚vi程序，这些程序可以完成发射设备的测试任务。某些项目需要专业人员根据情况进行设计。
第四章 结论
本文以某型地空导弹武器发射设备为研究对象，分析了目前发射设备测试的现状和虚拟仪器在现代测试中的应用，将虚拟仪器技术应用于防空发射设备。它给出了自动测试系统的一般设计流程和具体的软件和硬件设计方案，并以发射设备的机械振动为例，设计了子程序。
本文基于虚拟仪器的自动检测系统具有高采样率和高带宽等特点，并可根据测试系统的数据，对发射设备进行故障诊断，其开放性、系统优势是明显的。
参考文献
[1]雷振山，LabVIEW 7表示实用的编程技术，中国铁路出版社;p353 - 355
[2]张一帮，自动测试系统.2001年哈尔滨科技大学出版社出版;P120
[3]张毅智，小肖，虚拟仪器的设计与实现，西安：西安电子科技出版社，2003年
[4]徐晓武，研究导弹发射控制系统在PXI总线上的自动测试基地，弹体杂志，
Research on Automatic Testing of Air Defense Missile Launch Equipment Based on Virtual Instrument Technology
YANG Ming, WANG Jie，YU Xiaohui, QI Xiaopeng
Missile Institute of Air Force Engineering University, Sanyuan, Shannxi, China, 713800,
Phone : 86 29 2829110 E-Mail: youngmin123@sohu.com
Abstract: Launch equipment is an important part of air defense missile launch system. For its reliability and realization of its function affect launch result, so the test to the launch equipment is important. As a new type of automatic testing technology, virtual instrument concept is suitable for the space fields, including all kinds of testing for air defense missiles. By analyzing the present situation of air defense missile launch equipment automatic testing, a new model of system based on virtual instrument is presented; the system used PXI bus technology and LabVIEW program language. The design flow of automatic testing system is given, its hardware solution and software solution is designed.
Key words: virtual instrument; missile launch equipment; automatic testing system
I. Introduction
With the full speed development of microelectronics technology and computer science, the automatic testing system based on virtual instrument technology, which take the advantage of automatic testing technology and computer technology, become of a new measurement and modern instrumentation hot spot following digital instrument testing system. Launch equipment is a important component of air defense missile, it is used to prop up and hold a guided missile, accomplishing some shooting preparation, laying, tracking target before launching and guiding the missile to take off correctly. Its functionrsquo;s realization and its reliability will affect the launch result directly. In the testing, leads virtual instrument technology to air defense missile weapon system, being able to be especially effective taking a test and monitoring systematic various weapon parameters, ensuring the guided missile launches successfully.
This paper applying virtual instrument technology to the air defense missile launching equipmentrsquo;s automation testing, and PXI bus technology and LabVIEW programming language having
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