Sensors

Updated: 6/28/2025 Words: 0 words Reading time: 0 minutes

Sensors are devices or equipment capable of sensing, detecting, and measuring specific physical quantities or environmental parameters. They are ubiquitous in daily life, and we interact with them almost every day.

For example, automatic sensor faucets in bathrooms typically use infrared sensors to detect whether hands are nearby; additionally, there are various types such as temperature sensors, humidity sensors, pressure sensors, and speed sensors.

Sensors are widely used in various fields, including industry, science, medicine, communications, automotive, and household appliances.

Sensors achieve data collection and processing by sensing different physical quantities and converting them into readable signals or electrical signals.

As shown in the diagram below, when a finger touches the sensor, the sensor senses the pressure input. The sensor's resistance changes with pressure variations, and the peripheral circuit converts the resistance change into a voltage signal. By measuring the voltage signal, the system can calculate the corresponding pressure value.