| 摘要 |
PURPOSE:To monitor a direction with real time at a remote place by fitting a Hall element, a magnetic forcuser and an angle detector integrally to a rotation axis of a motor. CONSTITUTION:The motor 5 is fixed on a case 8 and the Hall element 1 is fitted to the rotation axis 6 integrally with the angle detector 4, the magnetic forcuser 2, an electronic circuit 3, etc. The output voltage (V) of the element 1 is taken out to the outside via the circuit 3 and a rotational current collector 7. Then, the motor 5 rotates and drives the element 1 and a potentiometer 11 for detecting an angle. An electric current is supplied from a constant-current power source 9 to the element 1 and the electric potential is generated according to the strength of a magnetic field and its output is inputted to an xy recorder 14 via a differential amplification circuit 10. On the other hand, output of the meter 11 is inputted to the recorder 14 via a buffer amplifier 13. The direction can be know immediately by processing these two output signals of the recorder 14.
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