Inspection process. Quick guide

How to start your inspection process. With some tips about how to improve the fault detection results and comments about what not to do.

Wired vs WIFI internet connection

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The inspection process time is strongly dependent on the internet speed. If your images needs more than 10 seconds to get fully uploaded, you will get a "TIMEOUT ERROR" message. 

We recommend a wired connection and speeds of 100-1000Mbps

The faster the internet speed, the faster the inspection.

If your premises do not have or have low speed internet access, our OFFLINE inspection platform could be what you need. Contact us for more information.

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Light sources and panel/circuit  orientation

The inspection platform uses 2 LED lights and diffuser panels to get rid of cast shadows. But if you take photos of the circuits varying its orientation every inspection, large electronic elements (like capacitors, coils and connectors) present on the circuits/ panels will be seen differently from the camera's point of view.

Try to place the circuit always with the same orientation. 

 

The software is capable, within a second, of auto-aligning the images, but the light projected will fall very differently over the electronic components if the circuit is rotated by 90/180 degrees.  That will lead the neural network to make mistakes when looking for faults. Try to avoid it always placing the panels/circuits with the same orientation.

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Optical / Digital ZOOM

 When using a DIGITAL ZOOM, the camera's optics are not adjusted. It is accomplished electronically, so no optical resolution is gained. That means that you are not providing useful info to the software. 

If you are using our inspection platform and are inspecting a small circuit/panel: Move the camera DOWN until it is about 45 cm over from the circuit you are inspecting. The structure of the platform will not allow going down further in any case.​​  From that distance, take the photos.

Do not use the camera controls to increase the size of the circuit/ panel. That will only degrade the quality of the image taken. The Raspberry 400 will take control of the camera and set the best configuration under every circumstance.

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CROPPING tool

Useful when the panel/circuit in the photo is too small. Cropping the image will "force" the software to focus on the selected area and will reduce the inspection time.

You can only crop an image in the REFERENCE canvas.

 

The software will automatically look for the same area in every photo taken of the panels to be inspected after the cropping boundary has been set. To remove the CROP boundaries, click on the CROP icon again.

In case of doubt, visit the Inspection tool guide.

Starting the inspection process. STEPS

At this point, you should have already set up the inspection platform as instructed in this guide. 

Please read the inspection tool guide. It has useful information about how to properly use the software.

The points listed below will guide you through the steps you need to make to inspect a circuit/ panel your first time. This video shows the same process:

  1. Turn ON the LEDs panels using the switch and/or remote control. Set, using the UP and DOWN arrows, their brightness. If you are inside a well-lit room, you may not need to set them to their maximum brightness.

  2. Turn ON the CAMERA.

  3. Check if the camera is set in aperture mode (A). See below how to do it. 

  4. Turn ON the Raspberry Pi 400 and wait for the system to boot. Check if you have everything connected as indicated in the assembly guide.​

  5. The Inspection software tool will automatically show up. If this is the first time launching the system, you will need to populate the USER CREDENTIALS fields and submit the info, clicking on SUBMIT.

  6. You need to connect your raspberry 400 to your internet network. To do that, click on the NETWORK icon shown below, pick the right network and type the password. As indicated above, wired connection is highly recommended making the most of the AOI service.

     7.Check if the camera respond to the INSPECTION BUTTON, pressing it for 5 seconds. That should set a REFERENCE image. This is a photo taken             to a circuit/panel you already know is in good condition. As the camera parameters are controlled from the Raspberry, you do not have to do                     anything. Just check if the image is in focus. You can use the mouse's wheel to increase the zoom magnification and take a closer look at the                   elements. You ca

      8.Once the REFERENCE photo of the circuit has been set, you can now take photos of the units you want to inspect. Press the INSPECTION                            BUTTON for one second to take a photo.

      9. You are ready to go. Read the NOTES below for important tips.

All the inspection results will be stored in the PCB_OUT folder you will find in the external USB drive. The REFERENCE images will be moved to the folder called "REFERENCE". You can find all of them there , in the case you need any of the REFERENCE images previously used.

NOTE: the "R" key from the keyboard will work as a camera trigger button too. "R" will set a REFERENCE image. "S" will take a photo of an image to be inspected. 

NOTE: If you activate the AUTO-ANALYSIS option, all the photos taken pressing "R" or the INSPECTION BUTTON for one second, will be automatically processed.

NOTE: By default, we send the camera already configured, but from time to time, re-check the the camera is operating with the Aperture MODE enabled. 

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First, tap on the round button indicated above. The select rotating the dial, the Aperture MODE (A). Then, using the same dial, select the value F8.0 (right image). Setting the aperture to F8.0 will let you get the most detailed photos of your circuits / panels.

NOTE: make use of the ERROR REPORT button. That will dramatically improve the recognition capacity of the system in the long run. More info about how to use it here.

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