一、概述; 在石油、化工、能源、饮料及食品加工等部门,经常需要对液态产品的输送实行定量控制和定量灌装。目前,实现产品定量输送的常见方法是,通过观察流量计的读数,人工控制阀的开启与关闭,而定量灌装则多采用人工称重的方法,这些方法的最大缺点是计量不准,劳动强度大,工作效率低。为改变这种状况,我们研制了一种以单片微机为基础的流量定量控制仪,并以此为核心配以流量计和相应的输出控制执 I. Overview; In the petroleum, chemical, energy, beverage and food processing sectors, it is often necessary to carry out quantitative control and quantitative filling of liquid products. At present, the common method to realize quantitative product delivery is to manually control the opening and closing of the valve by observing the flowmeter readings, while manual filling is often used for quantitative filling. The biggest disadvantage of these methods is that the measurement is not accurate and the labor High intensity, low efficiency. To change this situation, we developed a single-chip microcomputer-based flow rate controller, and as the core with the flowmeter and the corresponding output control