Acoustic Battleship Evaluated by: Professor Maciej Ciesielski - - PowerPoint PPT Presentation

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Acoustic Battleship Evaluated by: Professor Maciej Ciesielski - - PowerPoint PPT Presentation

Nov 01, 2022 107 likes •330 views

Acoustic Battleship Evaluated by: Professor Maciej Ciesielski Professor Christopher Hollot Department of Electrical and Computer Engineering Team Members Liam Weston Adrian Sanmiguel (Group Manager) Xinyu Cao Justin Forgue Department of

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Department of Electrical and Computer Engineering

Evaluated by: Professor Maciej Ciesielski Professor Christopher Hollot

Acoustic Battleship

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Team Members

Liam Weston (Group Manager) Adrian Sanmiguel Justin Forgue Xinyu Cao

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Problem Statement

Board games have failed to adapt to the technological advances of today’s market. Traditional board games have fallen out of favor. Implementing embedded systems could help to provide a jolt to the industry. How do we plan to do this?

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Problem Statement

▪ Provide an aesthetically pleasing, functional, scalable, and robust interface ▪ Applying these characteristics to Battleship

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Problem Statement

▪ Our solution will put an interactive spin on a classic game ▪ Accuracy based game using a ping pong ball to provide low-latency, responsive feedback ▪ Will follow an adapted set of guidelines to Battleship ▪ Using localization from a network of microphones to detect if a target is hit

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Display for A Player B Player A Display for B Player A plays, miss Game Demo START

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Player B Player A Player B plays, hits Display for A Display for B Game Demo

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System Requirements & Specifications

Requirement Specifications Value Accuracy Distance Error <= 5 cm Responsiveness Response Time <= 500 ms

Table of Requirements and Specifications Components: Microphone, LED, ADC, Microcontroller, Display, Ping-Pong Ball, transparent glass table

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UI LED Display

Ping Pong Ball

Sound Effect Start Button

ADC Input Acoustic Sensors

Processing Unit

Microcontroller

Block Diagram

Clock

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▪ Implement 16 electret omnidirectional condenser microphones (CMA-4544PF) to optimize source localization in 2-Dimensional space ▪ Operating frequency: 20Hz – 20kHz

Frequency of human conversation: 85Hz - 255 Hz Frequency of Ping Pong hitting a surface: 5.9kHz - 7.3kHz

Microphone Sensors

CMA-4544PF

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▪ Microphones sensors will be omnidirectional

Microphone Sensors

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Analog Digital Converter (ADC)

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Time of Arrival

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Algorithms

sound source acoustic sensor

d = t * s

t: time duration from sound source to sensor s = 340 m/s (sound of speed in air) d: distance from sound source to sensor

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Algorithms

sound source acoustic sensor

  • calculated coordinate:

actual coordinate:

Three-sensor subsystem with two corner sensors

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▪ Takes input from the ADCs and clock ▪ Once the input of an ADC goes high the system time is stored ▪ The 16 time stamps are compared to calculate a location on the board ▪ The location is matched to a LED ▪ The relevant LED is switched through the output

  • f a PWM signal

Microcontroller Function

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FPGA (compared to microcontroller) ▪ Pro: flexible and reduce system components ▪ Con: more complex and takes more time Camera vision (compared to microphone sensor) ▪ Pro: easier to track the motion, more precise ▪ Con: more complex and resource intensive. Infrared sensors (compared to microphone sensor) ▪ Pro: more accurate, more responsive ▪ Con: expensive, need a lot

Technical Alternatives

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Ping-Pong Score Keeping (compared to Battleship) ▪ Pro: more interesting ▪ Con: not represent the precision we are looking to achieve; more edge cases Electric Dart Game (compared to Battleship) ▪ Pro: straightforward; represent the precision ▪ Con: less technically advanced and less interesting

Non-Technical Alternatives

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▪ (16) Microphone Sensors: $15.00 ▪ Passive Components: $5.00 ▪ (1) Arduino Microcontroller: $23.00 ▪ Playing Surface: $80.00 ▪ (200) RGB LED: $56.00 ___________________________ Total: $179.00 Budget Remaining: $321.00

Prototype Budget

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▪ System on a single board for one player ▪ Using Arduino as microcontroller ▪ Calculate coordinates and light up LED accordingly ▪ Error distance less than 8 cm. ▪ Response time less than 1 s

MDR Prototype

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Question?