| 摘要 |
PURPOSE:To constitute a titled device so that it is scarcely influenced by temperature variation, and to measure the intensity of magnetism with high accuracy, by winding an electric coil around an amorphous magnetic material which generates a magnetic distortion effect, making a prescribed energizing current flow, and obtaining a signal corresponding to binary variation of magnetic flux density. CONSTITUTION:Coils 5, 6 have the same number of windings, the winding directions are made opposite, and a signal of a sine wave oscillator 7 due to electromagnetic induction is not generated. In case when a magnetic field changes a code by making a prescribed sine wave current flow to the coil 5, a sharp pulse is generated in the coil 8. Subsequently, when an external magnetic field which is stronger than prescribed is provided by bringing a permanent magnet close to a magnetic bistable element 3, no pulse is generated. A magnetic field H1 which generates a pulse again by increasing the magnetic field generated in the coil 5 is proportional to an external magnetic field H0, and by measuring the H1, the external magnetic field H0 is derived exactly. |
