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一、前言电脑型流量显示记录仪是利用微处理机处理数据和实时控制功能的新型流量显示记录仪表。它使计量装置中的大量硬件软化,提高了仪表的精度及可靠性,实现了单台表进行多路控制、处理数据、打印显示等功能,使整个系统成本降低,性能指标大大改善,因此电脑型流量显示记录仪在流量计量系统中作为处理记录数据可广泛应用,大有发展前途。二、仪表系统概述该仪表主要由三部分组成。 1.多路切换输入电路:以光电耦合器组成的多路切换开关,在微处理机控制下,与V/F器件一起构成多路切换输入电路,实现多路采样及转换的功能。
First, the foreword Computer-based traffic recorder display is the use of microprocessor processing data and real-time control of the new flow display recorder. It softens a large amount of hardware in the metering device, improves the precision and reliability of the meter, realizes the functions of multi-channel control, data processing and print display in a single meter, so as to reduce the entire system cost and greatly improve the performance index. Therefore, the computer Type flow recorder display in the flow measurement system as a record processing data can be widely used, promising future. Second, the instrument system overview The instrument consists of three parts. 1.Multiple switching input circuit: Optocouplers composed of multi-switch, under the control of the microprocessor, and V / F devices together constitute the multi-channel switching input circuit, multi-channel sampling and conversion functions.