ULTRA HIGH RESOLUTION HIGH SPEED PARALLEL PROCESSING AUTO INSPECTION SYSTEM FOR PCB

According to the present invention, provided is an ultrahigh-resolution high-speed parallel processing auto-inspection apparatus for a high-integration printed circuit board. The apparatus includes: a line scan camera for obtaining a surface image of an inspection surface of a PCB; a lighting part emitting light to the inspection surface of the PCB; a vertical movement member supporting the line scan camera to enable the camera to be vertically moved; a laser displacement sensor obtaining inclination information of the inspection surface by pre-scanning the inspection surface of the PCB before obtaining the surface image of the inspection surface of the PCB, and then measuring a distance between the line scan camera and the inspection surface of the PCB to maintain the distance therebetween during the procedure of obtaining the surface image; and a displacement compensation means pre-controlling the movement of the vertical movement member by referring to the inclination information pre-obtained during the procedure of obtaining the surface image, and then controlling the movement of the vertical movement member to compensate for displacement corresponding to a difference value if there is a change in the displacement measured by the laser displacement sensor. The displacement compensation means includes: a signal receiving part receiving a signal from the laser displacement sensor; a displacement difference calculation part calculating a displacement difference by comparing a displacement value inputted from the signal receiving part and a reference displacement value stored in a storage device; a pre-scanning means controlling the operation of the scanning and movement of the laser displacement sensor to enable the laser displacement sensor to obtain the inclination information of the inspection surface of the PCB; and a control part controlling the operation of a motor, which is a component of the vertical movement member, as far as the displacement difference calculated by the displacement difference calculation part. 본 발명은 PCB의 검사면의 표면이미지를 획득하기 위한 라인스캔카메라; 상기 PCB의 검사면에 광을 조사하는 조명부; 상기 라인스캔카메라를 수직으로 이동가능하도록 지지하는 수직이동부재; 상기 PCB 검사면의 표면이미지를 획득하기 이전에 상기 PCB 검사면을 사전스캐닝하여 검사면의 경사정보를 획득하고, 상기 표면이미지의 획득과정에서 PCB의 검사면과 라인스캔카메라가 일정한 거리를 유지하기 위해 상기 거리를 실시간으로 측정하는 레이저변위센서; 상기 표면이미지의 획득과정에서 사전 획득한 상기 경사정보를 참조하여 수직이동부재의 이동을 미리 제어하고, 레이저변위센서에서 측정된 변위에 변동이 있는 경우 그 차이값에 해당하는 변위만큼 보정하도록 상기 수직이동부재의 이동을 제어하는 변위보정수단을 포함하되, 상기 변위보정수단은 레이저변위센서로부터 신호를 수신하는 신호수신부, 상기 신호수신부로부터