I. Optical sensors
Optical sensor is a sensor that uses the principles of refraction, reflection and diffuse reflection of light to monitor and detect objects. Often used to measure the brightness, color, shape and other parameters of objects. It is widely used in industrial production and automation fields, such as detecting product shape, color, surface defects, width and other information.
Second, the temperature sensor
A temperature sensor is a sensor used to measure the temperature change on the surface or inside of an object. The working principle of these sensors can be based on thermal diffusion, thermoelectric effect, resistance temperature change and so on. Temperature sensors are widely used in various industrial sites and electronic equipment, such as temperature control, heat treatment and high-precision measurement.
Third, the pressure sensor
Pressure sensor is a kind of sensor used to measure pressure change. It can convert pressure signals into electrical signals to detect and monitor physical changes under various pressure conditions. The application fields of pressure sensors include manufacturing, medical care, food processing and environmental monitoring.
Function of sensor
I. Monitoring the environment
Sensors can monitor and sense various physical quantities in the environment, such as temperature, humidity, air pressure, light and so on. Through these monitoring, we can better understand the environment and get the information we need. At present, many smart homes use various types of sensors to monitor indoor temperature and humidity, so as to adjust air conditioners, humidifiers and other equipment and provide a comfortable living environment for human beings.
Second, the control equipment
Sensors can also be used to control various devices, such as cars, robots, factory equipment and so on. Sensors control the operation of equipment by sensing the changes of environment and equipment and converting these changes into electrical signals. For example, when the automobile sensor detects that the tire pressure is too low, it will send a warning signal to the automobile computer system, so that the automobile driver can carry out maintenance in time to ensure driving safety.
Third, safety.
The switch sensors of doors and windows can detect whether the windows are opened, thus helping users to protect their homes and property. In addition, sensors can also play an important role in some cases, such as fire or gas leakage. Once they detect the danger, they immediately send an alarm signal to the fire station or relevant institutions to protect people's lives and property.