With the development of economy, the progress of science and technology, the growing market demand, more and more sales of sensors on the market. The majority of buyers and consumers face seemed a bit at the wide variety of sensors, in order to make everyone better distinguish various sensors, to introduce more about sensor in detail below.
Pressure sensors, a sensor is the most commonly used in industrial practice, its widely used in various industrial control environment, involved in water conservancy and hydropower, railway transportation, intelligent buildings, production control, aerospace, military industry, petrochemical, oil, electric power, ships, machine tools, pipe, and many other industries, the following is a brief introduction some commonly used sensor principle and its application. Other medical pressure sensor.
: ultrasonic sensor was designed by the characteristics of ultrasonic sensors. Ultrasound is a kind of mechanical wave of vibration frequency is higher than the sound wave, can by changing the chip to vibration happens under the excitation of voltage, it has a higher frequency, shorter wavelengths, small diffraction phenomenon, especially good directivity, can become rays and directional transmission, etc. Ultrasonic penetrating power of liquid and solid is very big, especially in sunshine opaque solid, it can penetrate tens of metres in depth. Ultrasonic encounter impurities or interface can produce significant reflection form into echo, touching the moving objects can produce doppler effect. So ultrasonic detection is widely used in industry, national defense, biomedicine, etc.
Laser sensor: using laser technology measurement sensors. It consists of laser, laser detector and the measurement circuit. Laser sensor is a new type of measuring instrument, its advantage is that can realize non-contact distance measurement, fast speed, high precision, large range, optical, electrical interference resistance ability, etc.
Displacement sensor, also known as linear sensor, is a device that belongs to the metal induction linear sensor is the function of the various physical quantities can be converted into electricity to be tested. In the process of production, displacement measurement generally divided into two physical dimensions and mechanical displacement measurement. According to the measured variable transformation, different kind of displacement sensor can be divided into analog and digital two kinds. Can be divided into the physical properties and structural analog two kinds. Displacement sensor is commonly used in the majority with analog structured, including the potentiometer displacement sensor, inductive displacement sensor, selsyn, capacitive displacement sensor and electric eddy current displacement sensor and hall displacement sensor, etc. An important advantage of digital displacement sensor is to facilitate the signal directly into a computer system. This kind of sensor has been developing rapidly, the application is becoming more and more widely. Displacement sensor can be used for navigation discuss above, can accurately distinguish distance and route.
