Printed Circuit Board History Tracking System

Abstract

A printed circuit board (PCB) history tracking system utilizes an illumination device to provide light sources of different wavelengths, enabling an image capturing device to acquire PCB code images of circuit boards on different surfaces. These PCB code images are then used to integrate the processing status of the circuit board at each processing device into a PCB history, allowing processing personnel to track the entire PCB processing process. Furthermore, the PCB codes are in plain text format; if the system cannot automatically recognize them, processing personnel can manually input the PCB codes to correct them.

Claims

1. A printed circuit board history tracking system for tracking a circuit board history generated after a circuit board (2) has undergone a processing operation in any of a plurality of processing equipment (1), comprising: the plurality of processing equipment (1), each of the processing equipment (1) being used to perform the processing operation on the circuit board (2); an image capturing device (3), each of the processing equipment (1) being provided with the image capturing device (3), and the image capturing device (3) being used to acquire an image of a circuit board code (23) on the circuit board (2), and an image of the appearance of the entire circuit board (2) (P1); At least one illumination device (4), each of the processing equipment (1) is provided with the illumination device (4), and the illumination device (4) is used to provide an incident light (L1) of different wavelengths to illuminate the circuit board (2) according to a device code corresponding to each of the processing equipment (1), so that the image capturing device (3) can obtain a clear image of the circuit board code (23) of the circuit board (2); and a detection device (5), each of the processing equipment (1) is provided with the detection device (5), and the detection device (5) on each of the processing equipment (1) has the device code corresponding to the processing equipment (1) built in, and the detection device (5) is used to store the circuit board history generated after the processing operation of the circuit board (2); wherein the circuit board code (23) on the circuit board (2) is plain text.

2. The printed circuit board history tracking system as described in claim 1 further includes a database (6) electrically connected to the detection device (5) of each of the processing equipment (1) and used to store the history of the circuit boards of a plurality of the circuit boards (2).

3. The printed circuit board history tracking system as described in claim 2 further includes a central control device (7), which is electrically connected to the detection device (5) of each processing equipment (1) and the database (6), and includes a central processing module (71), a display module (72), and an input module (73), wherein the central processing module (71) is electrically connected to the display module (72) and the input module (73), and the central processing module (71) searches for the corresponding circuit board history from the database (6) according to the circuit board code (23) transmitted by the input module (73), and then uses the display module (72) to display the circuit board history to a processing worker.

4. The printed circuit board history tracking system as described in claim 1, wherein the detection device (5) includes a processing module (51) and a light control module (52), the processing module (51) is electrically connected to the image capturing device (3) and the light control module (52), and the light control module (52) is electrically connected to the illumination device (4), wherein the processing module (51) transmits a light control signal to the light control module (52) based on the circuit board code (23) image of the circuit board (2) transmitted by the image capturing device (3), and the light control module (52) then controls the illumination device (4) to emit the incident light (L1) of the corresponding wavelength based on the light control signal.

5. The printed circuit board history tracking system as described in claim 4, wherein the detection device (5) further includes a text recognition module (53), which is electrically connected to the processing module (51). After the image capturing device (3) transmits the image of the circuit board code (23) of the circuit board (2) to the processing module (51), the processing module (51) then transmits it to the text recognition module (53). Then, the text recognition module (53) generates a circuit board code (23) signal based on the image of the circuit board code (23) of the circuit board (2), and then sends the circuit board code (23) back to the processing module (51).

6. The printed circuit board history tracking system as described in claim 4, wherein the detection device (5) further includes an appearance recognition module (54), the appearance recognition module (54) is electrically connected to the processing module (51), after the image capturing device (3) transmits the appearance image (P1) of the circuit board (2) to the processing module (51), the processing module (51) then transmits it to the appearance recognition module (54), and then the appearance recognition module (54) generates at least one defect feature coordinate based on the appearance image (P1) of the circuit board.

7. The printed circuit board history tracking system as described in claim 6, wherein the detection device (5) further includes a judgment module (55) electrically connected to the processing module (51). After receiving the defect feature coordinates transmitted by the appearance recognition module (54), the judgment module (55) compares the defect feature coordinates with a product inspection standard data to generate a defect degree of the defect feature coordinates. Then, it compares the defect degree with a standard value and sends a processing status report back to the processing module (51).

8. The printed circuit board history tracking system as described in claim 4, wherein the detection device (5) further includes an integration module (56) electrically connected to the processing module (51) and used to integrate the circuit board code (23) image of the circuit board (2), a processing status report of the circuit board appearance image (P1) of the circuit board (2), a processing time of the circuit board (2) processed in each of the processing equipment (1), the equipment code of the processing equipment (1), and a processing data used by each of the processing equipment (1) into the circuit board history.

9. The printed circuit board history tracking system as claimed in claim 1, wherein when the circuit board code (23) of the circuit board substrate (2) is surrounded by a surface (2a), the incident light (L1) provided by the illumination device (4) is an infrared light (L11) with a wavelength range of 760nm to 1mm.

10. The printed circuit board history tracking system as claimed in claim 1, wherein the circuit board code (23) of the circuit board substrate (2) is surrounded by a glass fiber surface (2b), and the incident light (L1) provided by the illumination device (4) is a blue light (L12) with a wavelength range of 380 nm to 500 nm.

Images