Patent ID: 6184693
Filing Date: 2001-02-06
Classification: G01R

Abstract:
An electromagnetic noise detecting device for measuring electromagnetic noise in a vicinity of an integral structure base, comprising:an integral structure base made by perpendicularly intersecting and integrally constructing a first substrate having formed on a surface thereof a first electromagnetic noise sensor and a second substrate having formed on a surface thereof a second electromagnetic noise sensor;drive means for moving the integral structure base a predetermined distance in a direction of the first substrate;memory means for storing a first induced voltage value output from the first electromagnetic noise sensor at a position immediately preceding driving thereof by said drive means, storing a second induced voltage value output from the second electromagnetic noise sensor at a position when the integral structure base is moved only a predetermined distance in a direction of the first substrate, and further interconnecting in parallel the first electromagnetic noise sensor and the second electromagnetic noise sensor and storing a third induced voltage value output from the parallel connected electromagnetic noise sensors at the position of movement;computation means for determining an electromagnetic noise level based on the first and second induced voltage values stored by the memory means, comparing the first and second induced voltage values stored by the memory means, and determining a direction of an electromagnetic noise generating source based on both a comparison of the first and second induced voltage values and whether a largest induced voltage value from among the first and second induced voltage values is larger than the third induced voltage value; anddisplay means for displaying the electromagnetic noise level and the direction of the electromagnetic noise generating source, determined by the computation means, at a position corresponding to the position of the first electromagnetic noise sensor formed on the first substrate which was driven by the driving means.