Why is it better to use a magnetoelectric encoder than a photoelectric encoder

Magnetoelectric encoder is a new type of encoder product born after photoelectric encoder. Its cost performance is higher than that of photoelectric encoder. It is worthy of everyone's choice. Why do you say that? Let's take a look at the difference between magnetoelectric encoder and photoelectric encoder, and The advantages of magnetic encoders!

The difference between a magnetoelectric encoder and a traditional photoelectric encoder

The photoelectric encoder is a type of sensor that is composed of a photoelectric code disk with a shaft in the center, a ring-shaped, dark engraved line, and a photoelectric transmitting and receiving device to read and obtain signals. It is mainly used to measure displacement or angle. Traditional photoelectric encoder code discs are made of glass, metal, and plastic. The glass code disc is made of thin engraved lines deposited on the glass. Its thermal stability and accuracy can meet common standards and requirements, but it is easy to break.

Magnetoelectric encoder is a new type of angle or displacement measuring device. Its principle is to use magnetoresistance or Hall element to measure the angle or displacement value of the changed magnetic material. The change of the angle or displacement of the magnetic material will cause a certain resistance or The voltage change is amplified by the amplifying circuit, and the pulse signal or analog signal is output after processing by the single-chip microcomputer to achieve the purpose of measurement. Its structure is divided into two parts: sampling detection and amplifying output. The detection is generally completed by a bridge circuit. There are two types of half-bridge and full-bridge. The amplifying output is generally realized by devices such as transistors and operational amplifiers.

The photoelectric encoder calculates the accuracy by marking lines on the code disc, so the higher the accuracy, the larger the code disc, the larger the encoder volume, and the accuracy is not continuous. Magnetoelectric encoders do not have such restrictions. They can be small in size and high in accuracy. In particular, absolute encoders require high accuracy and are more suitable for use in magnetic encoders.

Magnetoelectric encoder has the characteristics of anti-vibration, anti-corrosion, anti-pollution, anti-interference and wide temperature, and can be used in fields where traditional photoelectric encoders cannot adapt. High-performance magnetoelectric encoders can be widely used in industrial control, machinery manufacturing, shipbuilding, textiles, printing, aviation, aerospace, radar, communications, military and other fields.