| 摘要 |
<p>PURPOSE:To accurately detect the traveling direction of the machine body by making a detection signal of a vibration gyro pass through a band-pass filter and removing noises accompanying vibration, etc., of the machine body. CONSTITUTION:A detection signal of a vibration gyro 9 is allowed to pass through a band-pass filter 23a and, therefore, e.g. high-frequency noises accompanying vibration of the machine body or noises due to drift accompanying heat generation in the vibration gyro 9 can be removed. The signal allowed to pass through the band-pass filter 23a is, after application of a bias voltage by a constant voltage generating circuit 23b, input into a microcomputer 23c. From the output port of the microcomputer 23c, a high-voltage signal is output according to the traveling direction and the deviation angle of the machine body and thirteen LED 10a, 10b and 10c are suitably lightened by an LED-driving circuit 23d.</p> |
