What is a sensor?
Humans understand the world through various sensory systems, such as touch, smell and taste, and so on. Through our vision, we know that it is an orange carrot with a green cap; through the sense of taste, we can taste the taste of carrot silk.
The sensor is the sense of touch, smell and taste of an object. It is a device or device that allows an object to feel the signal being measured and can convert this input signal into an output signal according to a certain rule. Suppose the robot is beaten, and the pressure is the input signal. The sensor changes it to a signal that the head can understand according to its own rules, and the head will respond when it receives the output signal.
The output signal often refers to an electrical signal. The electrical signal can be voltage or current, which can be easily transmitted and controlled, and can be easily transmitted, processed, and stored. Sensors are generally composed of sensitive elements and conversion elements. A typical sensor structure is composed of sensitive elements, conversion elements, signal conditioning and conversion circuits, and auxiliary power supplies.
The application of sensors in life
Sensors with different functions use different principles. According to the principles, there are ultrasonic, ultraviolet, electric, magnetic and acceleration sensors, etc. Sensors with different principles will also bring about differences in use effects.
Nowadays, the application of sensors has been very extensive, and we need to select sensors reasonably in a specific environment. For example, wearable devices, large petrochemical warehouses, smart home appliances, etc.
With the improvement of technology, sensors are becoming more and more miniaturized, multi-purpose and intelligent. I believe that with development, more advanced sensors will appear, bringing more convenience to our lives.