| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a current sensor capable of preferably being applied for on-board use etc. , which is adopted with the constitution that the DC magnetic field that corresponds to the current to be measured is detected by the modulation of the magnetic flux caused by the Villari effect, and the coil formation for winding on the sensor body with wiring material which is operated comparatively easily and in the later process is capable of easily assembling to the wiring already wired and capable of changing the wiring of the measurement object accompanied by the design change. <P>SOLUTION: The sensor body 4, which is formed to the surface and the rear face of the semicircular piezoelectric plate 1, is sandwiched by the same shaped first magnetic plate 2 and the second magnetic plate 3 bonded integrally. A pair of sensor bodies 4 are prepared, and a pair of pick up soils 5 are provided respectively, and for measurement the edges of two sensor bodies 4 are abutted against each other so as to be connected magnetically. On the surface and the rear face of the piezoelectric plate 1, the electrode films are provided and polarized in the thickness direction, and the pick up coils 5 are formed by winding around and along the external profile. With respect to the wire 7 the sensor bodies are inter linked around the same, and measurement can be performed. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
