本文运用传感器技术、微计算机技术和集成电路技术设计的圆弧半径测量仪,既可测量内、外圆弧,又能快速显示被测圆弧的半径尺寸,具有体积小、可手持测量的特点,适合在生产车间加工现场测量。误差分析表明,数显测量仪可以满足一般精度圆弧半径的测量要求。 In this paper, the use of sensor technology, micro-computer technology and integrated circuit design arc radius measuring instrument, both inside and outside the arc, but also quickly display the radius of the measured radius, with small size, hand-held measurement features , Suitable for processing in the production workshop measurement. Error analysis shows that digital measuring instrument can meet the general accuracy of the arc radius measurement requirements.