Electromagnetic shielding defect monitoring system and method for using the same

Abstract

An embodiment disclosed herein is directed to a method of monitoring an electromagnetic shield effectiveness comprising transmitting a first electromagnetic field toward a first surface of an electromagnetic shield, detecting a second electromagnetic field transmitted from a second surface of the electromagnetic shield, generating a first signal corresponding to the second electromagnetic field and determining whether a defect exists at the electromagnetic shield by comparing the first signal to a predetermined threshold.

1 . A method of monitoring an electromagnetic shield effectiveness comprising:
 transmitting a first electromagnetic field toward a first surface of the electromagnetic shield;   detecting a second electromagnetic field transmitted from a second surface of the electromagnetic shield; and   generating a first signal corresponding to the second electromagnetic field; and   determining whether a defect exists at the electromagnetic shield by comparing the first signal to a predetermined threshold.   
   
   
       2 . The method of  claim 1 , wherein the determining whether a defect exists comprises calculating an effectiveness value based on data contained within the first signal and comparing the effectiveness value to the predetermined threshold. 
   
   
       3 . The method of  claim 2 , wherein the defect exists if the effectiveness value exceeds the predetermined threshold. 
   
   
       4 . The method of  claim 1 , further comprising determining the location of the defect at the electromagnetic shield when it is determined that the defect exists. 
   
   
       5 . The method of  claim 1 , wherein the first surface is an inner surface of the electromagnetic shield, and the second surface is an outer surface of the electromagnetic shield. 
   
   
       6 . The method of  claim 1 , wherein the first surface is an outer surface of the electromagnetic shield, and the second surface is the inner surface of the electromagnetic shield. 
   
   
       7 . The method of  claim 1 , wherein the transmitting the first electromagnetic signal comprises transmitting the first electromagnetic signal at a predetermined time corresponding to a predefined schedule. 
   
   
       8 . The method of  claim 1 , wherein the transmitting the first electromagnetic field further comprises generating a first current on the first surface. 
   
   
       9 . The method of  claim 7 , wherein the second electromagnetic field is transmitted by a second current induced on the second surface by the first current. 
   
   
       10 . The method of  claim 1 , further comprising detecting a frequency and amplitude of the second electromagnetic field. 
   
   
       11 . The method of  claim 10 , further comprising generating a second signal that contains data representing the detected frequency and amplitude of the second electromagnetic field; and
 Wherein the generating the first signal comprises generating the first signal based on the data of the second signal.   
   
   
       12 . The method of  claim 1 , wherein the second magnetic field comprises a quasi-static region and a radiative region; and
 Wherein the detecting the second electromagnetic field comprises detecting one or both the quasi-static region and the radiative region.   
   
   
       13 . A system for monitoring effectiveness of an electromagnetic shield, comprising:
 a transmit system adapted to transmit a first electromagnetic field toward a first surface of the electromagnetic shield;   a receiver system adapted to detect a second electromagnetic field transmitted from a second surface of the electromagnetic shield; and   analysis circuitry adapted to determine whether a defect exists at the electromagnetic shield by comparing a first signal corresponding to the second electromagnetic field to a predetermined threshold.   
   
   
       14 . The system of  claim 13 , further comprising control circuitry adapted to control the operations of the transmit system and the receiver system. 
   
   
       15 . The system of  claim 14 , wherein the controlling the operations of the transmit system comprises controlling the properties of the first electromagnetic field. 
   
   
       16 . The system of  claim 14 , wherein the control circuitry is further adapted to detect a user input entered through a user interface and to generate control signals to cause the transmit system to transmit the first electromagnetic field based on the user input. 
   
   
       17 . The system of  claim 14 , wherein the control circuitry is further adapted to generate a user notification adapted to be displayed through a user interface when the defect exists. 
   
   
       18 . The system of  claim 13 , wherein the receiver system is further adapted to determine a frequency and amplitude of the second electromagnetic field and further adapted to generate a signal containing the data corresponding to the determined frequency and amplitude. 
   
   
       19 . The system of  claim 13 , wherein the transmit system comprises plurality of transmit antennas; and
 the first electromagnetic field is transmitted through one of the plurality of antennas.   
   
   
       20 . The system of  claim 13 , wherein the receiver system comprises plurality of receiver antennas; and
 the second electromagnetic field is detected through one of the plurality of antennas.