Original stock photoelectric encoder/speed sensor encoder intelligent car C B D E car model
Product Descriptions：
Technical parameters of the encoder:
Number of lines: 100 lines
Outer diameter: 22mm
Inner hole diameter: 3.5mm
Thickness: 0.3mm
Material: Alloy steel
Production process: laser cutting processing
Installation method: The installation column provided by the seller can be used to fix it.
Technical parameters of speed measurement tube:
Manufacturer: Original HP from the United States
Supply voltage: 5V (3.3V is also available)
Wiring method: Red 5V, Black GND
Output signal: 5Vp-p two-phase signal output (see figure below).
Two signal lines, one yellow and one blue (due to different production batches, sometimes the signal line may be green, which does not affect use), yellow and blue are two TTL level signals (can be directly connected to a microcontroller) (note: measuring forward and reverse is based on these two levels to distinguish whether it is forward or reverse)
(Let A and B be signal lines)
A has a pulse first, which proves it is rotating in the positive direction
B has a pulse first, which proves it is a reversal
Important note: If the signal is blocked or not blocked for a long time, there will be no output. As a phase detection, waveform output will only be generated at the rising and falling edges of the beam. Therefore, when rotating the code wheel or switching back and forth with an opaque object, there will be a square wave output. At high speeds, it is similar to a sine wave or sawtooth wave. Please refer to the video demonstration below for details. The multimeter test consistently shows around 0.1V, which is invalid! Please use an oscilloscope or microcontroller's acquisition port for testing.
