Method for inspecting temperature distribution
专利汇可以提供Method for inspecting temperature distribution专利检索，专利查询，专利分析的服务。并且PURPOSE: To detect an inferior part by inspecting the temperature distribution on a printed circuit board packaged with parts by scanning infrared rays while power supply is made to the board and comparing the temperature distribution thus obtained with the temperature distribution of a normal printed circuit board.
CONSTITUTION: A printed circuit board 1 packaged with parts is put on a prescribed fixing place and electric power is supplied to the board 1 after a dummy load is connected with the board 1. A motor 6 is rotated in corresponding to an address stored in a RAM 13 and rotates a mirror 5. Infrared-ray emitted from an infrared lamp 2 are reflected by mirrors 5 and 7 after passing through a filter 3 and condenser lens 4 and irradiates the board 1. Data corresponding to the calorific value on the board 1 are outputted from an infrared camera 9 and converted into digital signals by means of an A/D converter 10. The digital signals are stored in the position of a RAM 13 corresponding to the address of the board 1. The data of a printed circuit board 1 to be measured and measured by a similar method by using the data as a reference. Then a CPU 14 compares both data with each other and the compared result is outputted by means of a printer 16 or displayed on a display 15.
COPYRIGHT: (C)1990,JPO&Japio，下面是Method for inspecting temperature distribution专利的具体信息内容。
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