电气制图和识图知识.doc

电气制图和识图
一、电气图定义
    用电气图形符号、带注释的围框或简化外形表示电气系统或设备中组成部分之间相互关系及其连接关系的一种图。广义地说表明两个或两个以上变量之间关系的曲线，用以说明系统、成套装置或设备中各组成部分的相互关系或连接关系，或者用以提供工作参数的表格、文字等，也属于电气图之列。
二、电气图分类
       1、系统图或框图：用符号或带注释的框，概略表示系统或分系统的基本组成、相互关系及其主要特征的一种简图。
       2、电路图：用图形符号并按工作顺序排列，详细表示电路、设备或成套装置的全部组成和连接关系，而不考虑其实际位置的一种简图。目的是便于详细理解作用原理、分析和计算电路特性。
      3、功能图：表示理论的或理想的电路而不涉及实现方法的一种图，其用途是提供绘制电路图或其他有关图的依据。
      4、逻辑图：主要用二进制逻辑（与、或、异或等）单元图形符号绘制的一种简图，其中只表示功能而不涉及实现方法的逻辑图叫纯逻辑图。
      5、功能表图：表示控制系统的作用和状态的一种图。
      6、等效电路图：表示理论的或理想的元件（如R、L、C）及其连
Electrical mapping and knowledge map
First, the definition of electrical diagrams
    Electrical graphic symbols, annotated outline around box or simplified electrical system or equipment in that part of relationship and connection between the relationship of a map. Broadly said that two or more than two variable relationship between the curve, to illustrate the system, complete installation or equipment 中 relationship between the various components of the Xiang Hu Huo Lian Jie relations, Huozhe to Tigonggongzuo Shenshu the form, language, etc., Ye belong to the list of electrical diagrams.
Second, electrical diagram classification
       1, the system map or diagram: annotated with the symbol or the box, briefly said that the basic component systems or subsystems, relationship and the main features of a diagram.
       2, circuit diagram: Graphical symbols for use in accordance with work order detail that circuit, equipment or sets of devices to connect all the components and relationships, regardless of its actual location of a diagram. Purpose is to facilitate the detailed understanding of the role of theory, analysis and computation circuits.
      3, function diagram: representation theory or ideal circuit without involving the realization of a diagram, schematic drawing of its purposes is to provide a basis or other relevant plan.
      4, logic diagram: The main use of binary logic (AND, OR, XOR, etc.) a unit of graphical symbols for diagrams, which involve not only the realization that functional logic diagram called pure logic diagram.
      5, menu plans: that the role and status control system of a graph.
      6, the equivalent circuit: that theory or ideal elements (such as R, L, C) and even