ECE 477 Design Review Team 4  Spring 2006 Justin Thacker, Matt Kocsis, Ian Snyder, Dustin Poe

Outline Project overviewProject overview Project-specific success criteriaProject-specific success criteria Block diagramBlock diagram Component selection rationaleComponent selection rationale Packaging designPackaging design Schematic and theory of operationSchematic and theory of operation PCB layoutPCB layout Software design/development statusSoftware design/development status Project completion timelineProject completion timeline Questions / discussionQuestions / discussion

Project Overview The Digital Real-time Intelligent Networked Kegerator will address safety, legal, usability, and economic concerns of draft beverage distribution. Alcohol consumption monitoring will provide a tool to allow a person to know exactly how much they have consumed, learn estimated legal limits, and reduce unauthorized or unlawful drinking. System control and monitoring will allow users to track inventory, decrease beverage waste, and predict future resource needs.The Digital Real-time Intelligent Networked Kegerator will address safety, legal, usability, and economic concerns of draft beverage distribution. Alcohol consumption monitoring will provide a tool to allow a person to know exactly how much they have consumed, learn estimated legal limits, and reduce unauthorized or unlawful drinking. System control and monitoring will allow users to track inventory, decrease beverage waste, and predict future resource needs.

Project-Specific Success Criteria An ability to sense and control beverage temperature.An ability to sense and control beverage temperature. An ability to identify authorized users via electronic identification.An ability to identify authorized users via electronic identification. An ability to track consumption on an individual basis.An ability to track consumption on an individual basis. An ability to display user/device status on an LCD.An ability to display user/device status on an LCD. An ability to control the function of and report the status of the kegerator via an embedded web server.An ability to control the function of and report the status of the kegerator via an embedded web server.

Block Diagram

Microprocessor Selection

LCD Selection

RFID Reader Selection

Packaging Design Self contained unitSelf contained unit Easy to add on to existing systemEasy to add on to existing system

Schematic/Theory of Operation

PCB Layout 236 mm 117 mm

Bottom Copper Analog Gnd / Power Gnd 50 mil i Digital Gnd Pins 2 and 3 Internally Connected Single Point of Analog and Digital Ground

Top Copper 12V 50 mil12V 60 mil 5V Traces 50 mil 3.3V

PCB Layout Common Beverage Interface Temp/ Compress RCM3315 Microcontroller Module 5V and 3.3V Converters Serial Interface Biometric Future Dev

Common Beverage Interface Have common I/0 simplified easily through symmetry Segregates High Current Analog From Rest of Circuit

DC to DC Converter Traces made short and large as possible Bypass Capacitors mounted underneath to get as close as possible Power and Signal Gnds Segregated EMI reduction

Software Design/Development Status All functions built into costate statements.All functions built into costate statements. –Temperature polling –Rabbit web External events triggered by interupts.External events triggered by interupts. –Flowmeters: code working on rabbit Other hardware over serial communication.Other hardware over serial communication. –Bill Validator: code working on rabbit –RFID: code working on rabbit –LCD: code working on computer

Project Completion Timeline Week 8 – PCB and Schematic finalization and test circuitsWeek 8 – PCB and Schematic finalization and test circuits Week 9 – Finalize PCB and test circuitsWeek 9 – Finalize PCB and test circuits Week 10 – Complete all functional software modules and hardware testingWeek 10 – Complete all functional software modules and hardware testing Week 11 – PCB integration and testingWeek 11 – PCB integration and testing Week 12 – Integrate controller functions with web and hardware testingWeek 12 – Integrate controller functions with web and hardware testing Week 13 – Add complex featuresWeek 13 – Add complex features Week 14 – Test complex features, create video and posterWeek 14 – Test complex features, create video and poster Week 15 – Final Presentation, ReportWeek 15 – Final Presentation, Report

Questions / Discussion