| 摘要 |
A rotation detection device includes an encoder that is rotatably arranged, multiple detection object portions that are provided in the encoder and arranged in a circumferential direction, and a rotation detector for detecting rotation of the encoder. The rotation detector includes a detection portion for detecting the rotation of the encoder, a pulse generation portion for generating a pulse based on a detection signal that is outputted from the detection portion, a rotation speed calculation portion for calculating a first rotation speed of the encoder based on the pulse, a pulse counter for counting the pulse, an encoding portion for encoding information that includes the first rotation speed and a counter value of the pulse counter, and a communication portion for communicating the encoded information through unidirectional communication or interactive communication with an external device. |
