Share My Creation Remote Data Logger and Console.

Discussion in 'B4R Share Your Creations' started by tigrot, Mar 19, 2018.

  1. tigrot

    tigrot Well-Known Member Licensed User

    Hi everybody,
    Thanks to B4R I was able to develop a Data Logger and remote console for my main project, a food metal detector.
    This pjt show whatever is on MD main display and simulate it's four buttons remotelly. It stores on local SD some log of activities and automatically transfer to Usb memory if it's inserted in Vdrive socket.
    Thank you Anywhere Software.

    Mauro


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  2. positrom2

    positrom2 Active Member Licensed User

    Nice photographs.
    But "Sharing" I understand means that technical details of the project are presented, at least to learn something...
     
    tigrot and MarkusR like this.
  3. tigrot

    tigrot Well-Known Member Licensed User

    I promise I'll explain the details. Let me a couple of days.
    Mauro
     
    positrom2 likes this.
  4. tigrot

    tigrot Well-Known Member Licensed User

    My Metal Detector is based on a PIC 18F4525. It was developed to look for metallic contaminations in foods. Every industrial food must be metal free.
    It has a serial which was used to get a log of MD activities on a windows server.
    I have use a Arduino Mega2560 to remote console activities(to improve mag field stability) and to collect log instead of the windows server.
    It uses the second and the third serial ports to connect the MD and the VDrive Vinculum USB device. The fourth serial is used to concatenate a Windows logger.
    The logs are temporary stored on a SD. When needed a USB is inserted in the USB socket. When VDrive reveals that a memory is in, Arduino starts to copy SD content, removing each file from SD after the copy is complete.
    A real time clock is mantained in the logger shield. The screen to adjust the time and date shows when the USB memory is inserted.
     
    inakigarm and Erel like this.
  5. positrom2

    positrom2 Active Member Licensed User

    Would you mind to share more information on the magnetics part of your project?
     
  6. tigrot

    tigrot Well-Known Member Licensed User

    The MD part is not related to Arduino. It's not a property of mine. I have sold to a company. If you want to know about MD you can google "food metal detector". They are all based on the same metals magnetic properties.
     
  7. positrom2

    positrom2 Active Member Licensed User

    What is the smallest size of the metal particles that can be detected? While ago I found a 1cmx1mm brittle metal spiral in a cake containing apricots, probably released from opening the can of apricots at the bakery. Would not have been healthy to consume it due to its sharp edges. Today there are warnings on metal pieces in several cream chees products in Germany.
    https://www.focus.de/gesundheit/new...anderen-marken-zurueckgerufen_id_8650276.html
    Would be nice to have a (sensitive) metal detector for that at home... (in addition to smoke, CO, radiation, detectors etc, and for many more (plastic in water, mercury in fish), needed in our modern civilization)
     
  8. tigrot

    tigrot Well-Known Member Licensed User

    About 1mm diameter. The worst part is the antenna, made of two toroides, one to generate pulsing mag field and one to get. If you compare the sent and received waved you can measure the hysteresys of the food. Every metal has his own wave form. Using a DSP this is a relativelly simple task. If you have a double trace hoscilloscope, put the transmitter signal on one channel and the receiver on the other. It's amazing to observe the results!
     
    Last edited: Mar 22, 2018
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