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What is the incremental encoder output signal

by:HENGXIANG     2020-11-25
Incremental encoder is a kind of can convert rotary motion to the output signal of the sensor, combined with the mechanical transmission components such as gear and rack, measuring wheel or spindle, incremental encoder can also measure the linear motion. The position of the shaft encoder can be incremental changes into a continuous pulse signal is output. By optical incremental encoder signal transformation principle 'partial linear yards of metal plastic or glass material of the encoder with rotating take hand installation, by testing, Inspection and testing) Leds emit far infrared light to realize the position detection. SSI signal display is by the absolute type rotary encoder, device or automatic cable or other form of coupler, display, controller, transmission cables, RS485 digital communication interface and other components, gate movement through the coupler drive the sensor, can be output with brake corresponding gray code coding signal. Encoder scribed line on the number of determines the resolution, the light obscured by the sensor on the circuit board receives and through the signal processing circuit, the resulting square wave signal as the output of the encoder signal. Incremental encoder output signal of shaft encoder to provide two way with 90 degree phase difference of the square wave signal, and can also provide reference signal N. Pull on the rope displacement sensor is also called the pull on the rope, the rope sensors, pull on the rope electronic scale, pull on the rope encoder. Pull on the rope displacement sensor is linear displacement sensors in the structure of the choiceness, fully combines the Angle sensor and the advantages of the linear displacement transducer, as a small size, compact structure, installation, large travel and high precision measurement sensor, from a few hundred millimeters to more than 10 m. In order to improve the quality of signal transmission, some specific output circuit can generate reverse signals such as: RI30, RI36, RI58, RI58 - H, RI76 - TD,RI58- D。 The phase difference between the A and B signals are referred to as the measuring distance. The resolution of the dual channel encoder signal can be twice the frequency through the follow-up circuit or four times the frequency. Encoder installed after installed on the reduction gear, such as winding wire rope drum shaft end or the last section reduction gear shaft end, this method has no gear charges of clearance, measurement is more direct, high precision, this method is generally measured positioning for long distances, such as all kinds of lifting equipment, feeding dolly positioning, etc. Through this party to 2500 line signal can be increased to 5000 lines or 1000 lines.
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