| 摘要 |
<p>PURPOSE:To realize good excitation control by satisfactorily detecting a human body with a simple structure. CONSTITUTION:A vibration sensor 4 is provided in a controller 3 fixed at one corner section of a carpet main body 2. A heating element 1 is buried in the carpet main body 2. The vibrations generated at various sections of the carpet main body 2 are satisfactorily transferred to the controller 3. A vibration sensor 4 can properly detect the vibrations generated at various sections of the carpet main body 2. Since the distance between the vibration sensor 4 and an electric circuit provided in the controller 3 is short, the effect of the noises generated by the heating element 1 can be suppressed to the minimum. The excitation to the heating element 1 is controlled based on the output signal of the vibration sensor 4.</p> |
