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锅炉液位的自动检测和调节,目前多数采用DDZ-Ⅱ型仪表,少数采用DDZ-Ⅲ型仪表.采用这种仪表,连同变送器、运算器、调节器和显示仪表组成的系统价格昂贵,体积大,调节性能也有许多不足之处.本文介绍用Z80-CPU、PIO、CTC及A/D、D/A转换器等构成的水位控制仪,同浮球电感式传感器和电动调节阀一起构成的锅炉液位微机控制系统,这个系统充分利用了微机的快速采样、准确而高速的运算能力和逻辑判断能力,尽可能用软件代替硬件,使整个系统造价低,体积小,便于集中操作,系统的自动化程度高,调
At present, the majority of DDZ-Ⅱ meters are used, while the other is DDZ-Ⅲ meters. With this instrument, the system composed of transmitter, calculator, regulator and display instrument is expensive, Large size, there are many regulatory deficiencies.This article describes the use of Z80-CPU, PIO, CTC and A / D, D / A converter composed of water level controller, with the float sensor and electric control valve together The system makes full use of the rapid sampling computer, accurate and high-speed computing power and logical judgment, as much as possible to replace the hardware with software, the entire system low cost, small size, ease of centralized operation, the system The high degree of automation, transfer