Optical sensors mainly include general optical metering instruments, laser interference, grating, encoder, and optical fiber -based optical sensors and instruments.Optical sensors and instruments are measured according to the principle of optical.In terms of design, it is mainly used to detect whether the target appears, or the motion testing of various industries, automobiles, electronic products and retail automation.
Optical sensor application
Optical sensors are mainly used in high -tech fields. Especially in the aerospace industry, optical sensors have an irreplaceable effect. For exampleThe height of the aircraft to ensure the safe navigation of the aircraft; in the national defense scientific research and the information industry, optical sensors also have a very important role. Using optical sensing device can greatly improve the accuracy of the weapon and enhance the national defense forces; optical sensors are inMedical also has an important role. The use of optical transmitted sensors can see the interior of the human body to improve the effect of medical treatment.
Optical sensor principle
First, the sensor of the groove -type optical sensor is to use the optical transmitter in it to send a beam, and the corresponding optical groove is formed by the light receiver above.When the objects we want to detect through the optical groove, this object will cause corresponding light refraction and light reflection. At this timeA corresponding analysis and feedback are given to the processing component.Second, the radio optoelectronics sensor is the most commonly used optical sensor. This optical sensor is to separate the transmitter and the receiver.Can detect larger objects.The principle is basically the same as the groove optical sensor, and it is not introduced in detail here.Third, the reflective plate -type photoelectric sensor is placed in the same device in the same device. Under normal circumstances, the light emitted by the luminous device is reflected by the light reflective board on the light sensor on the optoe sensor to the receiver.If there are objects in the middle, the corresponding electrical signal will be generated.In this way, the corresponding electronic control switch can be controlled.This entire action is the complete output switch signal of the photoelectric switch.Fourth, diffuse reflective optical switch This is the last Chinese optical sensor, which is also among the same device in the same device.But there is no reflector in front of the receiver.Under normal circumstances, the light emitted by the transmitter cannot be found on the receiver.Only when the object is blocked by the light, this is reflected by the light, and some light reflects it to the light receiver. At this time, the light receiver accepts the light signal, and the light signal is converted into the corresponding electrical signal.
Optical sensor classification
Optical sensors can be divided into transmitted optical sensors, optical measurement sensors, mouse -specific sensors, reflective sensors, image sensors, etc. according to their uses.Among them, the optical mouse sensor is a revolutionary optical sensor that has revolutionized in the electronic digital world. It is equivalent to "confirming" and "records" in the process of continuously on the movement, so as to calculate the actual displacement of the mouse, and butThe advantage of the word "optical" is manifested on the LED light of the mouse base. The speed of light allows these data to pass to the computer host faster, thereby quickly responding.Most of the other types of optical sensors apply the speed of light, which is very convenient.

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