1 / 34

Magic Wand Battle Game

Magic Wand Battle Game. Team 53 Shanoon Martin, Jialin Sun, Manfei Wu. Introduction. Combine the technology of gesture recognition and the concept of wide-range game Implement the wireless network in the game to make it portable and flexible . Block Diagram. Wands. Wand’s Workflow.

kendall
Télécharger la présentation

Magic Wand Battle Game

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Magic Wand Battle Game Team 53 Shanoon Martin, Jialin Sun, Manfei Wu

  2. Introduction • Combine the technology of gesture recognition and the concept of wide-range game • Implement the wireless network in the game to make it portable and flexible

  3. Block Diagram

  4. Wands

  5. Wand’s Workflow

  6. Inertial Measurement Unit (IMU) • Consist of 3-axis Gyroscope and 3-axis Accelerometer • Accelerometer detects static and dynamic acceleration for tilt-sensing • Gyroscope senses angular velocity for motion orientation

  7. Filtering the IMU raw data • Gyroscope is less susceptible to noise on short term, but has accumulated drift over time • On long term, accelerometer data is sampled accurately because it does not drift • Complementary Filter and Kalman Filter

  8. Gesture Recognition Algorithm • Limitation: Arduino Uno computational time and memory • Better algorithm : Trajectory estimation algorithm and Bayesian network gesture recognnition • Actual implemented algorithm : Perceptron Algorithm

  9. Multiclass Perceptron Algorithm • Single layer artificial neuron network • Each data input vector is processed to be a feature vector f(x) • Weight vector (w): a specialized vector that used for identification for each different class • Activation: the dot product between w and f(x). The result determine which class the feature vector belong to

  10. HitSensor HitSensor=UltrasonicReceiver+Xbee+Arduino

  11. UltrasonicReceiverSchematic • Three stages of amplifier(2N2222) and a comparator(LM386) • Capacitors are added to get rid of DC components • At the input of the comparator, if V+ > V-, output is high, otherwise it is low, so we will have a square wave output

  12. Ultrasonic Transmitter • MaxSonarEZ4 • narrowbeam • Range: 0-5meters • ConnectitsVddand • GNDanditwillsend • outultrasonicwave • automatically

  13. Ultrasonic Receiver Output Oscilloscope output Arduino Serial Port Output

  14. Xbee • Wand • Hit Sensor • Receiver XBee S1

  15. Enable a wide range communication system • Distance 100ft (30m) • Set Transmitter Receiver XBee 1 XBee 2 ATID 40 ATID 40 Network ID ATMY 1 ATMY 2 Current ID ATDL 2 ATDL 1 Destination ID ATWR ATWR Save parameters ATCN ATCN Exit

  16. Receive Message hello 0-100 Point-to-Point Communication System is Ready

  17. XbeeMultiple Points Communication

  18. Multiple Transmitters One Receiver Transmitters Receiver (Wand & Hit Sensor) ATID 40 ATID 40 ATMY 1 ATMY 2 ATDL 2 ATDL 1 ATWR ATWR ATCN ATCN

  19. Main Receiver: Raspberry Pi A Receiver Xbee is connected Raspberry Pi with Xbee adapter • Enable Serial input of Pi • Download a Serial package • Test code

  20. Game Logic • Usedpython,especiallypygame • UsedseverallocalvariablestodistinguishdifferentincomingsignalsfromIMUorultrasonicreceiver classplayer(): hp=100 hit=0 move=0

  21. User Interface • Solder the PiTFT 2.8” touchscreen from Adafruit to female • header • Software: Install a new Kernel package over the Paspbian • Test and then edit more files to make it auto-load

  22. Wand’s Requirements and Verification • Test on IMU calibration

  23. Algorithm Correctness

  24. Stable connectivity between Wands and Receiver • Transmit real time sampling data at once from the wand to the receiver, average data lost is less than 5%

  25. Hit Sensor Requirements and Verifications Requirements: • Ultrasonic receiver will receive ultrasonic wave 5 meters away • At the longest distance, the receiver will have accuracy of 5cm Verifications: • Set the transmitter and receiver in parallel and 5 meters away from each other • Move the transmitter 5cm away from the line and see if the receiver gets any signals

  26. Wireless Communication Requirements and Verifications • Enable a wide range communication system • Support the mesh Network for multiple users communication with one receiver

  27. Power Budget • First Design : • Total power for wand: 5hr of gaming needs 812mAh • Final Design • Total power for wand: 5hr of gaming needs 1250mAh Current battery can sustain for 2hrs

  28. Challenges: 1. wand • Transmission rate between Xbees becomes slower when the end side is Raspberry Pi  Affecting the algorithm accuracy • Perceptron Algorithm can only sample limited movements

  29. 2. Hit Sensor • Calibration time 3. User Interface • Touchscreen is not stable

  30. Modified Design • Additional Arduino in Hit Sensor Coded to enable distinguishing multiple points 2. Use ArduinoUnos instead of building Arduinoboards using Arduino chips Could not fix the bug of “avrdude: stk500_getsync(): not in sync: resp = 0x50”

  31. Future Work • Implementing the wand algorithm on a different processor to increase the complexity tolerance of calculation • Integrate the processor and PCB of the wand to a lighter, smaller dimension for a better mobility • Decrease hit sensor calibration time • Make the touchscreen more stable • Add more players to the game

  32. Thank you!

  33. Reference • (2010) Accelerometer and Gyro Tutorial : http://www.instructables.com/id/Accelerometer-Gyro- Tutorial/ • Ultrasound device data sheet : http://www.maxbotix.com/documents/MB1040_Datasheet.pdf • Raspberry Pi to Arduino : http://www.cooking-hacks.com/documentation/tutorials/raspberry-pi-to- arduino-shields-connection-bridge • Ultrasound receiver information: http://www.engineeringshock.com/store/p311/The_40kHz_Ultrasonic_Transducer_Receiver_DIY_Kit_w ith_Custom_PCB.html • IEEE code of ethics

More Related