Thermal measuring and testing – Calorimetry – Gain or loss of heat by heat utilizing load in path of heat...
Patent
1994-04-06
1995-08-08
Cosimano, Edward R.
Thermal measuring and testing
Calorimetry
Gain or loss of heat by heat utilizing load in path of heat...
356 73, 356394, 364481, 364550, 36457102, G01R 3100, G01N 2184
Patent
active
054405661
ABSTRACT:
A method for detecting an diagnosing faults in printed circuit boards. Emissivity data and thermal image data of the various components of the board are obtained. The emissivity data is used to correct the thermal image data. The corrected data is converted to device space data, which is then input to a previously trained neural network. The output of the neural network indicates the location of the fault. The method includes an improved method for obtaining an emissivity map and a method for providing suitable neural network input.
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Burris Daniel P.
Houston Robert A.
Spence Hugh F.
Cosimano Edward R.
Southwest Research Institute
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