Operant Conditioning ChamberF09-23-RATMAZES

MembersPaul Stofko, EE (PM)

Tyler Ferro, ECEAdam Watkins, CpE

Dominic DiGregor, CpEAndy Thouvenot, ME

David Coats, ME

ClientDr. Eric Jacobs

FTADr. Nazieh Botros

Outline

• Executive Summary (AW)• Detailed Project Description• Overall Subsystem Descriptions (TF)• Subsystem Descriptions• Summary (PS)• Acknowledgements (DC)

Executive Summary

• Main Goals– Durability– Modularity– Automation

• Built for the Department of Psychology• Can be implemented in 14 weeks• Recommended solution costs $5991.80

Overall Description

• Operant chamber (Skinner box)• Token Exchange

Options Studied

• Upgrade current chamber or fresh start– Chose to start fresh and design entire chamber

• FPGA, Data Acquisition Card or Single Board Computer– Chose Single Board Computer

• USB, Ethernet, or Wireless– Chose USB

Subsystem Functional Descriptions

Subsystems – Physical LocationSound proof box

ComputerOperant Chamber Control Box

Reinforcement ManipulandaSensors

Subsystems – Physical Components

Micro SD

Operant Chamber

Control Box

I/O connectors

Ethernet/USB/WiFi

connectors

Waste Tray Modular BladesFloor barsRemovable

PostsRemovable

Door

Subsystems – Data FlowMarble DropLightsSpeakers

Marble ReceptacleLevers

Syringe PumpMilk ScoopPebble Food

Dispenser

Marble Drop

Lights

SpeakersMarble Receptacle

LeversSyringe Pump

Milk Scoop

Pebble Food Dispenser

Control Box

Computer

Fan

Fan

USB/Ethernet

Micro SD

Subsystem Description

• Soundproof box– Prevents majority of

distractions to experiment

– Mostly made of wood and soundproofing

– Has multiple features• Drawer• Viewing hole• Vetilation fan

Subsystem Description– Sound Attenuation

• To be filled later– Air Flow

• 80.78 CFM– Drawer max load

• 100lb

Control Box

• Breaker Box• Plug System• Control Switch Box

Power Distribution

• 300W Power Supply• Power Rails

Libraries

• Plug• LED• Lever• Marble Dispenser• Schedule• CSV• Clock

Arduino• Located in the control box• Also used OpenLog and Real-Time-

Clock modules• Controls modules• Timestamps events in a .csv

(comma separated value file)

Initial Experiment• Based on Decision Diagram• 4 main stages

– Token Production– Exchange Production– Token Exchange– Food Production

Decision Diagram

Start

Token production(Random interval)

· Lever light on· House light on

Exchange Production(Random Ratio)

Token Exchange(Random Ratio)

· Marble receptacle light on· House light flashing

% of Time(Produce marble)

% of Lever Presses(Allow to exchange)

1-% of responses

Time outOr

All dispensed marbles returned

Time out

Food Production· Food light on· House light on

% of Tokens(Give food)

Subsystem Description

• Chamber– Dimensions:

220 x 250 x 250 mm– Material: Steel and

Stainless Steel– Modular: 27

interchangeable blade locations

Subsystem Description

• Marble Dispenser– Marble Size:

½” Steel Ball Bearing– Components:

aluminum cylinder push/pull actuator PVC Piping System

– Capacity: 200+ marble hopper

Subsystem Description

• Marble Receptacle– Size: 1 ½” diameter hole– Sensor: switch sensor– Materials: PVC

Subsystem Description

• Lever– ¾” extension – 10g activation

• LED– Tricolor LED

• Speaker– 20Hz-20kHz

Subsystem Description

• House Light– White LED– Cluster

• Milk Scoop– Solenoid– .1 cc

Module Electronics

• 3.3V LED Power• 5V Logic Chips Power/Relay Switching• 12V Actuator• D[0] D[1] LED Control• D[2] Levers/Sensors• D[3] Actuator Toggle• D[4] Actuator Enable

Indirect Control

• Purpose• Description• Examples:

– LED Circuit– Relay– Speaker MOSFET

Controller Decoder

LED

LED

Controller Relay(s)

12V

Actuator

Summary

• Purpose• Function• Results

Acknowledgements

• Dr. Jacobs• Dr. Botros• Course Instructors• Dr. Pourboghrat• Dr. Sczary• Gladys Hounsinou• Tim Attig• Student Center Craft Shop and Wood Shop

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