Automatic Scanning with Phase Array
Objective
Test that the phased array can automatically transmit and receive signals and detect multiple RFID tags.
Proof of Concept
Set up the whole phased array system and run the automated scanning code on the Raspberry Pi. Once everything is set up, test to see if the phased array can detect multiple RFID tags. We performed this test by setting up RFID tags in the East, Northeast, North, Northwest, and West direction and see if all the tags can be read by the phased array.
Pass criteria: Detect RFID Tags
Fail criteria: No RFID Tags Detected
Methods
To ensure that the Phased Array can automatically sweep from the East to West and detect if an RFID tag was nearby. Set up all the components including the phased array, RFID Reader, Arduino Uno, and Raspberry Pi. Run the RFID Reader code to start scanning for RFID tags. Place RFID tags in the direction of East, Northeast, North, Northwest, and West and when a tag is detected a message will show up on the Raspberry pi notifying the user that a tag was found. Once a tag was found in each of the directions we pushed the tags back until the tag was no longer found to see how far the distance the tag could be detected. We did this for each of the different directions.
Results
When the whole phased array system was set up and in its encasement we were able to scan for multiple RFID tags at the same time when using the automated scanning mode. After multiple tests we were able to scan for tags in the West, Northwest, North, Northeast and East directions. The tags were dominant in the West, East and most dominant in the North.
LCD Display
![LCD.PNG](https://static.wixstatic.com/media/d427e6_af008f8e0bd6422f9c10938787145a8a~mv2.png/v1/fill/w_715,h_418,al_c,lg_1,q_85,enc_auto/LCD_PNG.png)
Automatic Scanning Results
Images
Automatic Scanning
![PA Set up.PNG](https://static.wixstatic.com/media/d427e6_d045f4167d24435da5d181f4807b47cb~mv2.png/v1/fill/w_571,h_786,al_c,lg_1,q_90,enc_auto/PA%20Set%20up_PNG.png)
Automatic Scanning Set Up
Final Encasement
![Encasement setuo.PNG](https://static.wixstatic.com/media/d427e6_5fe63d501eaa46468ff46a8fbcad54d5~mv2.png/v1/fill/w_601,h_658,al_c,lg_1,q_90,enc_auto/Encasement%20setuo_PNG.png)
Final Encasement Set Up