The Energy Directors Jeremy Nash, Chris Lamb, Kelsey Whitesell, Josh Chircus.

Slides:



Advertisements
Similar presentations
Georgia Tech Digital Back-end µHRG interface Curtis Mayberry School of Electrical and Computer Engineering Georgia Institute of Technology January 13 th,
Advertisements

Analog-to-Digital Converter (ADC) And
Sensors Interfacing.
Outline Project overview Project-specific success criteria Block diagram Component selection rationale Packaging design Schematic and theory of operation.
Kareem Nammari Edward Nicholson Kari Skupa Wes Stanway Cui Sun 1.
4.2 Digital Transmission Pulse Modulation (Part 2.1)
Technion – Israel Institute of Technology Department of Electrical Engineering High Speed Digital Systems Lab Project performed by: Safi Seid-Ahmad Emile.
Low-Noise Trans-impedance Amplifiers (TIAs) for Communication System Jie Zou Faculty Advisor: Dr. Kamran Entesari, Graduate Advisor: Sarmad Musa Department.
Fiber-Optic Communications
EEG Machine By The All-American Boys Featuring Slo- Mo Motaz Alturayef Shawn Arni Adam Bierman Jon Ohman.
CMOS VLSIAnalog DesignSlide 1 CMOS VLSI Analog Design.
SENIOR DESIGN 10/16.
Introduction to Op Amps
IT-101 Section 001 Lecture #15 Introduction to Information Technology.
Digital to Analog Converters
The Energy Directors Jeremy Nash, Chris Lamb, Kelsey Whitesell, Josh Chircus.
Team Members Jordan Bennett Kyle Schultz Min Jae Lee Kevin Yeh.
Digital Communication Techniques
A compact, low power digital CDS CCD readout system.
E DWARD N ICHOLSON K AREEM N AMMARI W ES S TANWAY K ARI S KUPA C UI S UN CDR.
BeH ā v Student Behavior FeedbackSystem. Overview Team BeHāV Overview Schematic Parts Software Hub Timeline Budget.
Chapter 13 Linear-Digital ICs. Copyright ©2009 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Electronic Devices.
Electronics for PS and LHC transformers Grzegorz Kasprowicz Supervisor: David Belohrad AB-BDI-PI Technical student report.
ECE 477 DESIGN REVIEW TEAM 2  FALL 2011 Members: Bo Yuan, Yimin Xiao, Yang Yang, Jintao Zhang.
Shiv Yukeun Donghan Robert.  Project overview  Project-specific success criteria  Block diagram  Component selection rationale  Packaging design.
Analog to Digital conversion. Introduction  The process of converting an analog signal into an equivalent digital signal is known as Analog to Digital.
ECE 477 Design Review Team 4  Fall 2010 (L to R) Andy Sydelko, Chris Cadawallader, Mike Wiliams, Craig Pilcher.
Group 8: Video Game Console Team Members: Rich Capone Hong Jin Cho Dave Elliott Ryan Gates.
1 ELE5 COMMUNICATIONS SYSTEMS REVISION NOTES. 2 Generalised System.
ATtiny23131 A SEMINAR ON AVR MICROCONTROLLER ATtiny2313.
EA PROJETO EM ELETRÔNICA APLICADA Bruno Mourão Siqueira.
Solar Power Array Management for the Solar Racing Team Mark Calotes Ginah Colón Alemneh Haile Nidhi Joshi Michael Lu School of Electrical and Computer.
JgimenoIWM-12/1/2004 Fiber Optic module 1 STUDIES AND DEVELOPMENT OF A FIRST FIBER OPTIC MODULE PROTOTYPE Javier Gimeno Vicente.
Automatic accident avoiding system PROJECT MEMBERS MUTHUKUMAR.K (05ME33) SAKTHIDHASAN.S (05ME39) SAKTHIVEL.N (05ME40) VINOTH.S (05ME56) PROJECT GUIDE:
LIGO-G09xxxxx-v1 Form F v1 Development of a Low Noise External Cavity Diode Laser in the Littrow Configuration Chloe Ling LIGO SURF 2013 Mentors:
ECE 477 Design Review Team 5  Spring 2010 Fred Grandlienard Andrew Gregor Kevin Mohr Ryan DeFord.
Treasure Chess ECE 477 Team 2 - Spring 2013 Parul Schroff, Brock Caley, Sidharth Malik, Jeremy Stork Design Review.
Digital to Analog Converter (DAC)
UCLA IEEE NATCAR 2004 SUMMER CLASS Magnetic Sensors & Power Regulation.
Low Power, High-Throughput AD Converters
Low Power, High-Throughput AD Converters
Μ [sic] design constraints wesley :: chris :: dave :: josh.
Task List  Group management plan  Background studies  Link budget: optical/electrical  Build, test learning Rx board  Order components for transceiver.
Guide Presented by Mr.M Cheenya V.Abhinav Kumar 11E31A0422 Asst.Professor K.Shiva Kumar 11E31A0423 K.Rajashekhar 11E31A0424 K.Chaithanya Sree 11E31A0428.
Wireless Power Transfer Via Inductive Coupling SENIOR DESIGN GROUP 1615 RYAN ANDREWS, MICHAEL DONOHUE, WEICHEN ZHANG.
© Date: 10/07 vinvin Product Presentation High-Speed, Microcontroller-adaptable, PWM Controller MCP1631 October 2007.
Sound Source Location Stand Group 72: Hiroshi Fujii Chase Zhou Bill Wang TA: Katherine O’Kane.
Signal conditioning Noisy. Key Functions of Signal Conditioning: Amplification Filter  Attenuation  Isolation  Linearization.
Low Power, High-Throughput AD Converters
IR OBSTACLE DETECTION TO
Summary  Goals  Communication technology  Optical Experiments  Fast Optical Communication  Transmitter  Receiver  Future work.
Electronic Devices and Circuit Theory
Different Types of Voltage Regulators with Working Principle.
ME6405 The George W. Woodruff School of Mechanical Engineering ME 4447/ME6405 Microprocessor Control of Manufacturing Systems/Introduction to Mechatronics.
Spring 2006CSE 597A: Analog-Digital IC Design Scan-Flash ADC Low Power, High-Throughput AD Converters Melvin Eze Pennsylvania State University
Components of Mechatronic Systems AUE 425 Week 2 Kerem ALTUN October 3, 2016.
IT-101 Section 001 Lecture #15 Introduction to Information Technology.
Application Case Study Christmas Lights Controller
Infrared Transmitter and Receiver Block Design
AC PWM CONTROL FOR INDUCTION MOTOR
UNIT-3 ADVANCES IN METROLOGY
4.2 Digital Transmission Pulse Modulation (Part 2.1)
Chapter 13 Linear-Digital ICs
AC PWM BASED POWER Control BY IGBT / MOSFET
ARDUINO LINE FOLLOWER ROBOT
Pulse Width Modulation (PWM) Motor Feedback - Shaft Encoder
Analog and Digital Instruments
ECE 3336 Introduction to Circuits & Electronics
Manual Robotics ..
Presented by T. Suomijärvi
Presentation transcript:

The Energy Directors Jeremy Nash, Chris Lamb, Kelsey Whitesell, Josh Chircus

Milestone 1  One way digital signal transmission through free space  Simple noise filtering  Show functionality of ADC/DAC/SPI  Basic motor movements Milestone 2  2 way signal transmission with ADC/DAC/Encryption/TDM functionality over short distance  Full motor control  Simple alignment functionality Josh

 Full auto-alignment functionality  2 way optical communication of audio signal with ADC/DAC/Encryption/TDM functionality  Package system in an aesthetic structure  Incorporate telephone handset for users to communicate with Josh

Laser setup: Successfully transmitted analog signal using laser diode and photodiode setup at 1ft Signal encoding: Several circuits, including the audio amplifier, summers, laser diode driver, and transimpedance amplifier have been implemented and debugged Motor control: Pseudo code for motor alignment complete, awaiting motor testing PCB layout: Schematic complete. PCB design almost complete. PCBwill be ordered within the week to implement a faster MCU for encoding Josh

Parts Bought Free Parts PartCompanyPrice 10 PhotodiodesThorlabs$130 2 Laser DiodesQPhotonics$120 1 Optical FilterEdmund Optics$125 InvertersDigiKey$10 TOTAL$385 PartCompany 2 Laser DiodesIntense (Kevin Caughlin) 8 Low Noise Op AmpsAnalog Devices 5 MultiplexersDigiKey Josh

EquipmentPurposePrice DEPS Funding$2200 UROP Funding$960 Laser DiodesTransmits encoded information-$120 PhotodiodesDetects laser signal-$130 LensesUsed in alignment system-$125 Inverter$10 Money Left$2775 PCB parts (Original Design, Redesign, Components, etc.) Decodes voltage from photodiode and filters noise$200 Motorized Track Actuators Precision adjustment of photodiodes and lasers for automatic alignment $350 TripodsUsed for Mounting Transceivers$100 Items Left to Purchase650 Josh

 Each transceiver will have an AC-DC power adapter to supply power to the board  Easy to implement  All components run on 15V or less  Allows for system portability  The motors will be powered by a separate AC-DC power supply of 24-36V  Decrease noise feedback from motors Josh

Jeremy

 ADC  12 bit samples  200 ksps (1 sample per 5μs)  Used to digitize audio signal  DAC  12 bit input  Used to convert digital signal to audible signal Jeremy

 1 ADC sample per packet  2 8 bit SPI transactions  12 bits for ADC sample  4 bits for checksum STC UCLK SIMO Jeremy

Input Signal Offset Summer ADC Data Serialization AM H/W Laser + Optics Transimpedence Amplifier Decoding H/W DAC Amplifi er Speaker Input Output (No Load) Input Output (Loaded) Jeremy

 Interrupt driven  Receive Interrupt  Transmit Interrupt  Alignment Interrupt  Interrupts are put into a FIFO buffer and processed Jeremy

 Transmitter  Summer and bias circuits for encoding data  Filters  Laser diode driver and laser diode  MCU  LED indicators, selection and on/off buttons (switches)  Receiver  Photodiodes- receiving and alignment feedback array  Transimpedance amplifier  Audio amplifier with volume control  Bandpass filters  MCU Jeremy Chris Josh Kelsey

 12 bit DAC and ADC  Capable of data encryption  Easy to lay down (64 pins)  4 Synchronous SPI ports  116 KB Flash, 8KB RAM  16MHz clock suitable for audio and digital data processing  Three-channel internal DMA for high-speed memory access in video applications  Disadvantage: No available development boards besides target boards Kelsey

Transmitter

 Linear track actuators for X-Y plane control  Motors: Firgelli Linear Track Actuators ▪ 10’’ stroke length ▪ VDC input ▪ Bracket available separately ▪ in/sec speeds depending on load  Motor drivers: two relays for directional control from the MSP 430; opto-isolators  Pulse-width modulation input Kelsey

 Stepper Motor for tilt control  Use stepper motors from Lin Eng. ▪ High resolution: 0.45 degree step size ▪ High torque ▪ 4 Leads  Pre-assembled motor driver from Lin Engineering ▪ Max. step frequency 2.5 MHz ▪ Optically isolated I/O ▪ See schematic Kelsey

 X-Y control  If receiving photodiode has no current: ▪ check to see if any photodiodes on array have current ▪ If so, PWM linear actuator driver to move transceiver unit a pre- calibrated distance in the x-y plane (positions of diodes stored as 1x2 vectors) ▪ If not, scan up and down in a 5x5 ‘’ window until current is seen in one of the diodes. If no current seen still, scan a 6x6’’ window… then adjust transceiver position  If receiving photodiode has current, no adjustment is necessary Kelsey

 Tilt control (sideways)  Used when one photodiode is receiving and the other is not, indicating a tilted transceiver ▪ Clamped transceivers should help reduce the chances of this problem ▪ Optical encoders cannot be used alone since only one transceiver has a motor and if misaligned, the other transceiver cannot communicate its tilt to the other ▪ Use similar scanning technique as for x-y control  Forward-backward tilt control not possible in our design Kelsey

 Photodiodes – Thorlabs FDS100  nm  High Responsivity in red (650 nm) range  Fast recovery time (35MHz)  Laser Diodes – QPhotonics QLD S  Single mode Fabry Perot laser  1 mW to 14 mW operating range  Pulsed operation with 0.5ns rise time easily allows 5 to 10 MHz modulation bandwidth  Low threshold current (~60 mA) and high slope efficiency  657 nm, +/- 1nm  Operating temperature range -40 o C to +40 o C  Laser Diodes – Intense  5mW - 10mW operating range  650nm, +/- 10nm  Low threshold current (~20 mA)  Operating temperature range 20 o C to 25 o C  Provided free of charge by Intense  Optical Filter – Edmund Optics NT  655 nm center wavelength, 40 nm bandwidth  93% or better transmission  1.25 mm (1 inch) diameter  UV Grade Fused Silica (low reflectance)  Collimating Kit – Optima Precision Inc. LDM-3756  Small, compact size (2 cm), focusable  Low divergence  High transmission of collimated beam, greater than 93%  Simple built-In heat sink Chris

 LIV Curves  Non-ideal nature in power drift may be due to temperature drift. Chris

 IV curve  Linear nature of IV curve suggests that resistance of Laser Diode remains constant throughout operating range. Chris

 Linearity Implies that resistance of photo diode is essentially a constant at all power levels. Chris

 Profile agrees well with the laser diode LIV curves, indicating that the photo diode is detecting the laser diode correctly. Chris

 The shift in responsivity suggests that the wavelength of the laser diode is decreasing due to power shift. Chris

 Op-amp  Must have > 112 V/μs slew rate for 16MHz Operation (LF356N is 12 V/μs)  Must be low noise to preserve digital signal integrity  Speaker Driver  Needed for drawing sufficient current  Optical Issues  Power loss and noise  Difficulties with the beam divergence  Mechanical awkwardness  Awkwardness Chris