The national standard GB7665-87 defines a sensor as: "a device or device that can sense the specified measured and convert it into a usable signal according to a certain rule (mathematical function rule), usually composed of a sensitive element and a conversion element".
The China Internet of Things School-Enterprise Alliance believes that the existence and development of sensors allows objects to have senses such as touch, taste and smell, and makes objects slowly become alive. "
A "sensor" is defined in the New Welsh dictionary as: "a device that receives power from one system and, usually in another form, delivers power to a second system"
