纺纱机的纱锭转速(转/分)、纺纱的线速度(米/分)、捻度(转/米)和纺纱时间均须进行实时测定。为了使研制的测速仪体积小、性能可靠、精度高、价格低廉,我们选用了美美国 Intel 公司的 MCS—8748单片计算机作为测速仪的主机,再配以相应的外部接口电路、数码显示器、琴键开关和传感器等组成。8478单片计算机由一块芯片上的中央处理机 Spinning machine spindle speed (rev / min), spinning speed (m / min), twist (rev / m) and spinning time must be measured in real time. In order to make the development of the small size, reliable performance, high precision, low cost, we use the United States and the United States Intel Corporation MCS-8748 single-chip computer as the main speedometer, together with the corresponding external interface circuit, digital display, Key switches and sensors and other components. 8478 monolithic computer consists of a chip on the central processing unit