| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a device for generating rotation signal and a system for detecting rotation with a small and inexpensive structure eliminating the need for wiring a power source and exchanging a battery. <P>SOLUTION: The device for generating rotation signal 10 which is a device for detecting the rotation of a rotating body 12, is provided with a power generating section 2 which has a piezo-electric element 21 and a collision member 22 and generates power when the collision member 22 impacts on the piezo-electric element 21 because of the rotation of the rotating body 12, and a transmitting section 4 which generates signals according to the rotation of the rotating body 12 by using the generated power. The system for detecting rotation 1 is provided with the device for generating rotation signal 10, and a detecting device 11 which receives the signal transmitted from the device for generating rotation signal 10 and detects the rotation of the rotating body 12. <P>COPYRIGHT: (C)2003,JPO |
