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利用许多检测元件的动态响应具有确定和稳定的特性这一规律,本文以工业上应用比较普遍的测量元件——热电偶为例,论述应用计算机技术和数字信号处理的原理,在不改变检测元件原有的结构和材料的前提下,对测温元件的传递函数,引入校正函数的方法,来改善测温元件的动态响应特性,从而较明显地提高了动态信号的检测速度。理论分析指出:这种方法不仅适用于一阶惯性系统,而且对二阶以上的高阶系统,以及其它种类的检测元件也是完全可行的。
Utilizing the rule that many dynamic response of detection elements have certain and stable characteristics, this article takes the thermocouple, which is a relatively common measurement element in industry, as an example to discuss the principle of applying computer technology and digital signal processing. Without changing the detection elements The original structure and materials under the premise of the temperature measurement element transfer function, the introduction of the correction function method to improve the dynamic response of temperature measurement element, which significantly increased the dynamic signal detection speed. Theoretical analysis shows that this method is not only applicable to first-order inertial systems, but also feasible for higher-order systems above second order, as well as other types of detection elements.