一、引言 常见的数字温度显示仪只能显示测量值,不能同时显示目标值,如要实现自动控制,还要另设颇为复杂的外围电路,甚至还得动用单片机。而智能控温仪性能好,自动控制方便但成本高,推广受经济条件限制。设计一种既简洁、经济、又能达到检测、显示、自控的仪器已成为广大设计者的迫切要求。本仪表就是本着这种思想设计的。 二、特点和技术参数 1.特点 I. INTRODUCTION Common digital temperature display instrument can only display the measured value, can not display the target value at the same time, if want to realize the automatic control, should set up another quite complicated peripheral circuit additionally, even have to use the one-chip computer. The smart temperature controller performance, easy automatic control but high cost, promotion of economic conditions. Designing a simple, economical, but also to detect, display, automatic control of the device has become an urgent requirement of the majority of designers. The instrument is designed in this thinking. Second, the characteristics and technical parameters 1. Features