Encoder

An encoder is a device that compiles and converts a signal (such as a bit stream) or data into a signal form that can be used for communication, transmission and storage. The encoder converts angular displacement or linear displacement into electrical signals. The former is called a code wheel and the latter is called a code ruler. Encoders can be divided into contact type and non-contact type according to the reading mode; encoders can be divided into two types: incremental and absolute according to the working principle. The incremental encoder converts the displacement into a periodic electric signal, and then converts this electric signal into a counting pulse, and the number of pulses is used to indicate the magnitude of the displacement. Each position of the absolute encoder corresponds to a certain digital code, so its indication is only related to the start and end positions of the measurement, and has nothing to do with the middle process of the measurement.

Classification of encoders

According to the working principle, the encoder has optical, magnetic, inductive and capacitive working modes. According to its scale method and signal output form, encoders are generally divided into three types: incremental, absolute and hybrid.

1. Incremental encoder Incremental encoder directly uses the principle of photoelectric conversion to output three sets of square wave pulses A, B and Z; the phase difference of the two sets of pulses A and B is 90 degrees, so that the rotation can be easily judged Direction, and the Z phase is one pulse per revolution, used for reference point positioning. Its advantages are simple structure, average mechanical life of more than tens of thousands of hours, strong anti-interference ability, high reliability, and suitable for long-distance transmission. The disadvantage is that the absolute position information of the shaft rotation cannot be output.

Second, absolute encoder Absolute encoder is a sensor that directly outputs numbers. There are several concentric code discs along the radial direction on its circular code disc, and each track is composed of light-transmissive and opaque sectors alternately. , The sector trees of adjacent code channels are in double relationship. The number of code channels on the code disc is the number of binary digits. On one side of the disc is the light source, and the other side has a photosensitive element corresponding to each code channel. , When the disc is in different positions, each photosensitive element converts the corresponding level signal according to whether it receives light or not to form a binary number. The characteristic of this kind of encoder is that it does not need a counter, and can read a fixed digital code corresponding to the position at any position of the shaft. Obviously, there must be N doctrines. At present, there are 16-bit absolute encoder products in China.

Third, the hybrid absolute encoder The hybrid absolute encoder outputs two sets of information, one set of information is used to detect the magnetic pole position, with absolute information function; the other set is exactly the same as the output information of the incremental encoder.

okplazas.com is a high-tech enterprise integrating R&D, production and sales of industrial encoders and high-precision couplings. The main products of the company are encoder and coupling series. There are five series of encoders: absolute series, economic series, industrial universal series, precision enhanced series, magnetoelectric series; couplings mainly include plum-shaped couplings, diaphragm couplings, and expansion sets Shafts, cross slide couplings, etc.

The company’s leading product, incremental encoder electronic handwheels, are widely used in the field of automation. They are essential key sensor components for CNC machine tools, servo motors, elevators, glass machinery, ceramic machinery, food machinery, aerospace, and automated assembly lines. It is an important component for the industrial upgrading of equipment manufacturing industry; while the coupling focuses on R&D investment, it also strengthens the requirements for technology and technology. All products adopt numerical control production, absorb foreign advanced technology, and develop and manufacture according to domestic actual conditions. Customer needs, to undertake special specifications.

The company's products implement ISO9001 quality management system standards, fully implement ERP enterprise resource data information management, and have passed CE certification and ROHS certification. Strength casts brand, professional achievement quality. "Time precipitation, fruitful results" Shishuo Technology has always adhered to the business philosophy of "accompaniment, learning, innovation, and service", market-oriented, paying attention to customer needs, through technological innovation, to improve product quality, exceed customer expectations, and provide customers wholeheartedly First-class products and services