对于内径的测量,传统的机械法存在着测量误差大、读数不方使的缺点。现有的一些电测量仪,进口的价格昂贵,国产的则存在着测量部分与显示部分分成两体,而且体积大、功耗大。不适宜于生产现场使用。为此,本文介绍所研制的一种新颖的便携式低功耗动态内径测量仪,它体积小、重量轻、携带方便、功耗很小、采用干电池供电,且具有最小值保持功能,直接显示内径值,适于现场和在线动态检测。 For the measurement of the inner diameter, the traditional mechanical method suffers from the disadvantages of large measurement error and unfavorable readings. Some of the existing electrical measuring instrument, the import of expensive, there is a domestic measurement of the display part and the display is divided into two parts, but also bulky, power consumption. Not suitable for use on the production site. To this end, this article describes the development of a novel portable low-power dynamic diameter meter, it is small, light weight, easy to carry, small power consumption, using a battery-powered, and has the minimum value to maintain the function of direct display diameter Value, suitable for on-site and online dynamic detection.