2025-08-28
The principle and application of sensors make our lives simpler and faster
Sensors are ubiquitous in our lives, and humans have created various electronic devices and household appliances using different types of sensors. It can be said that sensors play an important role in the field of technology. Next, let's talk about how sensors work. A sensor is actually an intelligent detection and feedback device that can transmit and process information such as electrical signals, temperature, and heat. Sensors are a symbol of intelligence and a prerequisite for achieving automation. There are also sensors made of semiconductor or magnetic materials, which are sensors manufactured using the characteristics of these special materials. The sensor principle is mainly composed of four parts, namely sensitive element, conversion element, conversion circuit, and auxiliary power supply. And sensitive components are mainly used to receive information, including sensitive components such as heat, light, gas, force, sound, and magnetism. Conversion components are used to output signals detected by sensitive components and convert them into electrical signals. Conversion circuits are used to amplify and process these electrical signals again, and finally feedback them to the instruction system to perform corresponding actions. The auxiliary power supply provides power to various internal components. There are many applications of sensors in our daily lives, such as robotic vacuum cleaners that use lasers to detect obstacles ahead and achieve rotation in different directions. The smartphones we use every day adopt many sensor principles, such as light sensors that automatically adjust brightness, and counting sensors that can constantly record our steps. Infrared detection sensors, smoke detectors, object sensors, etc. Sensor technology has become a mature technology that promotes industrial automation and technological intelligence, and has been widely applied to intelligent devices in various industries. Like a smart car, almost all types of sensors are applied.