本文给出了一种在原有工作的基础上完善了的、按照NIM标准设计的自动换档线性率表。它能自动转换档位和自动给出档位的显示与标记,因此可与记录仪联合起来用于长时间自动监测。文中介绍了电路核心方案、附加电路、结型场效应管的开关性能以及整体电路的某些指标。特别是讨论了自动换档阀值与积分电路时间常数之间的定性定量关系,为使自动换档率表能比较满意地工作提供了设计和调整的依据。 This paper presents an improved automatic shift linearity rate meter based on the original work. It automatically shifts the gear and automatically displays and marks the gear so that it can be combined with the recorder for long-term automatic monitoring. This paper introduces the circuit core programs, additional circuits, junction FET switching performance and the overall circuit of some of the indicators. In particular, the relationship between the automatic shift threshold and the integral circuit time constant is discussed qualitatively and quantitatively, which provides the basis for design and adjustment for the automatic shift schedule to work satisfactorily.