Case of Image Recognition and Acquisition in SMT Factory

 


SMT workshop photos


 

Workshop photos

As shown in the figure above, in the SMT factory in Yiwu, Zhejiang, the host computer software of the placement machine has a numerical display interface that can display the operation status data of the placement machine. The project requirement is to collect the equipment operation status data and upload it to the MES system according to the MQTT network protocol.

The following is a list of equipment for the project survey:

Serial number

Equipment No.

Location

workshop

Device Type

Device Name

model

brand

1

PSC170027

1901

22 Thick film workshop

Reflow

Lead-free computer hot air reflow

FLW-KR1060

Kelongwei Automation Equipment Co., Ltd.

2

PSC170028

1901

22 Thick film workshop

AOI

Lead-free computer hot air reflow

FLW-KR1060

Kelongwei Automation Equipment Co., Ltd.

3

PSC170029

1901

22 Thick film workshop

AOI

Lead-free computer hot air reflow

FLW-KR1060

Kelongwei Automation Equipment Co., Ltd.

4

PSC170272

1901

22 Thick film workshop

Reflow

Full hot air reflow oven

HS-0802

Shenzhen Haobao Automation Equipment Co., Ltd.

5

PSC220018

1901

22 Thick film workshop

Reflow

Reflow

JTR-1000(10 temperature zones)

Shenzhen Jintuo Automation Equipment Co., Ltd.

6

PSC170335

1901

06 Power supply workshop

Wave Soldering

Wave Soldering

E-FLOW-350

Unisplendour Suneast Technology Shenzhen Co., Ltd.

7

PSC200076

1901

02Injection molding workshop

Injection molding machine

Injection molding machine

JM258T

Chen Hsong Marketing (Shenzhen) Co., Ltd. Ningbo Branch

If you want to obtain the operation data of the placement machine and connect it to the MES system, you need to contact the placement machine manufacturer and open an authorization. The fee is very high, estimated to be 50,000 to 100,000.


 

Photos of the upper computer of the SMT equipment in the workshop

Therefore, in order to help customers reduce implementation costs, we chose the screen recognition solution. That is, we took a compromise solution of taking screenshots at regular intervals and identifying the software interface data on the screen. We used the instrument recognition software provided by our company.

 


 

Screen recognition software interface

As shown in the figure above, after the screen value is recognized, the data is uploaded in json format according to the required mqtt protocol and connected to the MES system. This solution saves the trouble of protocol docking and the cost is only about one tenth of the authorization fee.


 

MQTT protocol data upload debugging interface

 

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