Digital electronics encoder sensor

Because the conduction area of encoder counter code channel and direction code channel is staggered by half area, when the code disk rotates in a certain direction, the conduction area of counting code channel first touches the sensitive element, so the output of counting code channel will be ahead of that of direction code channel: when the code disk rotates in the opposite direction, the conduction area of direction code channel first meets the sensitive element, Therefore, the output of digital channel will lag behind that of directional code channel. With a simple logic circuit, the rotation direction of the code disk can be determined according to the output pulse sequence of the two barcode channels. When the output pulse of the sensitive element corresponding to the counter code channel is sent to the counter, and the counter is determined to count by adding or subtracting according to the rotation direction, the angular displacement of the code disk can be detected.