Proximity detection involves the ability to sense the presence of nearby objects without physical contact. A common example is a sensor that activates a device, such as a light or a door opener, when a person or object is within a specific range. This relies on technologies like infrared, ultrasonic, or capacitive sensors to perceive changes in the immediate environment.
The utilization of this sensing capability enhances safety, automation, and efficiency across numerous industries. Historically, simpler mechanical systems fulfilled this role, but modern electronic sensors offer improved reliability, precision, and adaptability. This advancement has led to more sophisticated and responsive systems in manufacturing, robotics, and consumer electronics.