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本文介绍以Intel公司的8031单片机为核心并配以2716 EPROM和8255可编程通讯接口等大规模集成电路组成的测速仪器。同过去水利水电部门普遍使用的传统仪器相比,它充分显示出可靠性好,抗干扰能力强,硬件电路简单,安装调试容易,操作使用简便等优点,而且不仅体积重量大为减小,成本也仅为传统仪器的四分之一至二分之一。一、硬件系统在满足使用要求和性能的前提下,考虑了现有单片机的特点、开发手段、价格以及仪器要求的功能诸因素,选用了MCS-51系列单片机中的8031。硬件最小系统原理图如图1。
This article describes the 8031 microcontroller with Intel Corporation as the core and with 2716 EPROM and 8255 programmable communication interface and other large-scale integrated circuit consisting of speed measuring instruments. Compared with the traditional instruments generally used by the water conservancy and hydropower departments in the past, it fully shows the advantages of good reliability, strong anti-interference ability, simple hardware circuit, easy installation and commissioning, simple operation and use, and not only greatly reduces the weight and cost It is only one-fourth to one-half of the traditional instruments. First, the hardware system to meet the requirements and performance of the premise, taking into account the characteristics of the existing microcontroller, development tools, price and equipment requirements of the various factors, the selection of the MCS-51 Series MCU 8031. Hardware minimum system diagram shown in Figure 1.