Large-scale complete sets of equipment in automation systems, also known as automation devices. The process in which a machine or device automatically operates or controls according to specified procedures or instructions without human intervention. Automation technology is widely used in industry, agriculture, military, scientific research, transportation, commerce, medical care, services, and family. The use of automation technology can not only free people from heavy physical labor, part of mental work, and harsh and dangerous work environments, but also expand human organ functions, greatly increase labor productivity, and enhance human abilities to understand the world and transform the world. . Therefore, automation is an important condition and a significant symbol of modernization of industry, agriculture, national defense, and science and technology.