What is the difference between an optoelectronic incremental encoder and an incremental rotary encod

Photoelectric incremental encoders generally refer to the internal composition of high-precision glass gratings and detection elements. The encoder rotates to produce the light on/off, and the optoelectronic components convert it into biphasic pulses or ABZ pulses in different directions for position detection.

The photoelectric incremental encoder is the best performance encoder, which can achieve a high number of more than 1500 lines and up to 10000 lines. The output pulse can reach about 1MHz.

Incremental encoders with low pulses per revolution and low rotation speeds may be optical, or they may be based on other, more economical and simple detection principles.

Below 200 are basically miscellaneous or OEM (that is, counterfeit), no quality assurance, and the process is not up to standard.

Actually, it's a meaning, in my opinion.

Incremental optical encoder operation method pro! Hello Heng Yuchen, I am happy to answer for you<> The operation method of the pro-incremental photoelectric encoder is as follows: The incremental photoelectric encoder outputs pulse signals of A, B and two different electric degrees (i.e., the so-called two groups of orthogonal output signals), so that the direction of rotation can be easily determined. At the same time, there is also a z-phase marker (indicator) pulse signal that is used as a reference mark, and only one marker signal is emitted for each rotation of the disc.

Flag pulse is often used to indicate the position of a machine or to zero the amount of accumulation. The signal output forms of incremental optical encoders are: open collector, voltage output, line driver, complemental output, and totem pole.

Generally, PLC has a special encoder interface, because the difference between A and B phases is 90 degrees, it can be compared whether phase A is in front or B phase is in front to distinguish the forward and reverse rotation of the encoder, and the zero reference bit of the encoder can be obtained through the zero pulse Z. If the encoder is a parallel output, connect the IO point of the PLC, you need to know whether the signal level of the encoder is a push-pull (or push-pull) output or an open collector output, if it is an open collector output, there are two types: N type and P type, which need to be the same as the I O polarity of the PLC. In the case of a push-pull output, there is no problem with the connection.

Hope mine can help you <>

Do you have any other questions?

An incremental encoder is a common position sensor that measures the position and speed of rotational or linear motion. It consists of a rotating or linear axis and a fixed encoder. The encoder consists of a photoelectric sensor and a grating disc on which there are many equally spaced transparent and opaque stripes.

When the axis rotates or moves, the photoelectric sensor detects the streaks on the grating disc and generates a pulsed signal. These pulse signals can be read by a counter or microprocessor to determine the position and speed of the shaft.

The working principle of an incremental encoder can be divided into two parts: position measurement and speed measurement. In position measurement, the encoder generates a pulse signal, each of which represents a fixed angle or distance for the number of traces of axis rotation or movement.

These pulsed signals can be read by a counter or microprocessor to determine the position of the shaft. In speed measurement, the encoder generates a series of pulsed signals whose frequency is proportional to the speed at which the shaft rotates or moves. These pulsed signals can be read by a counter or microprocessor to determine the speed of the shaft.

The advantages of incremental encoders are high accuracy, good reliability, and low cost. It can be used in a variety of applications, such as robotics, automated production spike lines, medical equipment, aerospace, etc. However, incremental encoders do not determine the absolute position of the shaft, so a starting position is required to determine the position of the shaft.

In addition, the resolution of incremental encoders is limited by the number of stripes on the raster disk, so the resolution rate is limited.

The incremental encoder converts the displacement into a periodic electrical signal, and then converts the electrical signal into a counting pulse, and the number of pulses indicates the size of the displacement. An encoder is a device that converts angular or linear displacement into an electrical signal. The former is called a yard disc and the latter is called a yardstick.

According to the readout method, encoders can be divided into two types: contact type and non-contact type. The contact type uses the electric section to search and brush the output, and a brush contacts the conductive area or insulation area to indicate whether the state of ** is "1" or "0"; The non-contact receiving sensitive element is a photosensitive element or a magnetic sensitive element, and when the photosensitive element is used, the light transmission area and the opaque area are used to indicate the state of ** is "1", and the state of the fire is "0".

There is a gap at equal angles (divided into transparent and opaque parts) on the edge of a code disc, and a light source and a photosensitive element are installed on both sides of the slit disc. When the code disc rotates with the working axis, each time it turns a gap, it produces a change in the brightness and darkness of the light, and then after shaping and amplifying, the output signal of the electric pulse of a certain amplitude and power can be obtained, and the number of pulses is equal to the number of gaps turned. This pulse signal is sent to a counter to be counted, and the angle at which the disc is turned can be known from the measured number of digits.

In order to determine the direction of rotation.

Two sets of photoelectric conversion devices can be used. Let their relative positions in space have a certain relationship, so as to ensure that the signals they produce are phase-1 4 periods apart.

How does an incremental optical encoder measure angle, forward and reverse rotation, and number of turns?

By setting the zero position of the encoder, a specific position can be defined as the electronic origin. 2.The angle is calculated by the number of pulses of the output signal of the encoder:

When the encoder rotates, a certain number of signal pulses are generated, and the angle of rotation can be calculated based on the number of pulses and the resolution of the encoder. For example, if the resolution of the encoder is 1000 pulses, when the encoder outputs 100 pulses, it means that the rotation is 1 10 revolutions, which is 36 degrees. 3.

The number of turns is calculated by accumulating the number of signal pulses: After one rotation of the encoder, the counting starts again from the zero position, so the number of revolutions can be calculated by accumulating the number of signal pulses output by the encoder. The way to measure forward and reverse rotation is to calculate the relative phase information of the encoder's output signal.

When the forward rotation is the same frequency of the two outputs, the phase difference is 0 degrees, and when the reverse rotation is the same for the two outputs, the phase difference is 180 degrees. Therefore, the forward and reverse assignment of the encoder can be judged by detecting the change in the phase of the two signals. By decoding the signal output by the encoder, the encoder's angle and number of turns can be obtained.

How does an incremental optical encoder measure angle, forward and reverse rotation, and number of turns?

Hello, the incremental optical encoder can measure the angle, forward and reverse rotation and the number of turns by measuring the number of pulses output by the optical encoder. The specific methods are as follows:1

Measurement angle: The number of output pulses of incremental optical encoders is proportional to the angle of rotation, so the angle of rotation can be calculated by measuring the number of output pulses of the liquid marker. In general, the number of output pulses of an incremental optical encoder is related to the number of scales per revolution, so it needs to be calculated according to the specific encoder specifications.

2.The direction of the output pulse of the incremental photoelectric encoder can be indicated, so the direction of rotation can be judged by measuring the direction of the output pulse.

In general, the output hall of an incremental optical encoder is dependent on the direction of rotation and therefore needs to be calculated according to the specific encoder specifications. 3.Number of Measuring Laps:

The number of output pulses of an incremental optical encoder can represent the number of revolutions, so the number of rotations can be calculated by measuring the number of output pulses. In general, the number of output pulses of an incremental optical encoder is related to the number of scales per revolution, so it needs to be calculated according to the specific encoder specifications. It should be noted that the measurement accuracy of incremental optical encoders is affected by many factors, such as the resolution of the encoder, rotation speed, ambient temperature, etc., so calibration and error correction are required in practical applications to improve the measurement accuracy and reliability.