目前在石油化工,冶金,电站等大型生产企业,采用矩阵网络选点法是比较常见的。它具有自成格局形式,可节省大量导线、电缆、开关、显示仪表和减少表盘面积,便于集中等优点。但这种矩阵网络是有源的,需采用干簧继电器、二极管等。本文介绍的无源矩阵开关选点网络不需采用上述元件,安装使用更为方便。 Currently in the petrochemical industry, metallurgy, power plants and other large-scale manufacturing enterprises, the use of matrix network point selection method is more common. It has its own form of pattern, can save a lot of wires, cables, switches, display instruments and reduce the dial area, easy to concentrate and so on. However, this matrix network is active, the need to use reed relays, diodes and so on. This article describes the passive matrix switch point network does not require the use of these components, installation and use more convenient.