© 2003 By Default! A Free sample background from Slide 1 Clinical Blood Analyzer Senior Design Project Sponsored by D3 Engineering PDR – November 12, 2004 Project 05204

© 2003 By Default! A Free sample background from Slide 2 Meet the Team Jerome Barczykowski – EE – Team Leader Jerome Barczykowski – EE – Team Leader William Murphy – EE William Murphy – EE James Milks – EE James Milks – EE Jeremy Gerevics – ME Jeremy Gerevics – ME Michael Maeder – ME Michael Maeder – ME Advisors: Dr. David Borkholder, Dr. Eli Saber Advisors: Dr. David Borkholder, Dr. Eli Saber Sponsors: Chuck Moon, Scott Reardon Sponsors: Chuck Moon, Scott Reardon

© 2003 By Default! A Free sample background from Slide 3 Presentation Overview Introduction Introduction Positioning System Design Positioning System Design Metering Tower Design Metering Tower Design Incubator Chamber Design Incubator Chamber Design Motion Control Design Motion Control Design Interface and Communications Design Interface and Communications Design Image Processing Overview Image Processing Overview Future Plans Future Plans Questions Questions

© 2003 By Default! A Free sample background from Slide 4 Introduction

© 2003 By Default! A Free sample background from Slide 5 Project Requirements The system shall be: Portable Portable Fully Automated Fully Automated Self-Calibrating Self-Calibrating Capable of analyzing twelve slides Capable of analyzing twelve slides Capable of determining number of slides in slide tray Capable of determining number of slides in slide tray Compatible to use test slides manufactured by the Johnson and Johnson Co. Compatible to use test slides manufactured by the Johnson and Johnson Co.

© 2003 By Default! A Free sample background from Slide 6 Requirements Cont’d. Able to dispense very precise amounts of blood on test slides Able to dispense very precise amounts of blood on test slides Determine stage of development of the blood dispensed on test slides Determine stage of development of the blood dispensed on test slides Capable of transferring images to a host PC Capable of transferring images to a host PC

© 2003 By Default! A Free sample background from Slide 7 Positioning System Design

© 2003 By Default! A Free sample background from Slide 8 Positioning Concepts Rotary/Phonograph Positioning Rotary/Phonograph Positioning Matrix Positioning – Moving Slides Matrix Positioning – Moving Slides Matrix Positioning – Stationary Slides Matrix Positioning – Stationary Slides Full Linear Positioning Full Linear Positioning

© 2003 By Default! A Free sample background from Slide 9 Positioning Feasibility Concept Feasibility Score Rank Matrix Positioning – Moving Slides 233 Matrix Positioning – Stationary Slides 212 Full Linear Positioning 161 Based on the feasibility score the linear positioning system will be used. Based on the feasibility score the linear positioning system will be used. Concept will provide more accuracy for positioning Concept will provide more accuracy for positioning Will require less maintenance Will require less maintenance

© 2003 By Default! A Free sample background from Slide 10 Metering Tower Design

© 2003 By Default! A Free sample background from Slide 11 Metering Tower Concepts Two-piece head design Two-piece head design Rack and pinion or linear actuator for Z-axis movement Rack and pinion or linear actuator for Z-axis movement Slide rails and belt drive system for Y-axis movement Slide rails and belt drive system for Y-axis movement Fixed pin or additional worm gear to open/close evaporation caps Fixed pin or additional worm gear to open/close evaporation caps

© 2003 By Default! A Free sample background from Slide 12 Metering Tower Feasibility Two-Piece System Two-Piece System –Costs less –Implementation time less –Less mass to move –Easily machined –Provides more accuracy with linear actuator Single-Piece System Single-Piece System –Already designed from inkjet printer –Additional adapter piece needed –Heavier –Need for higher motor holding torque –Higher machining costs

© 2003 By Default! A Free sample background from Slide 13 Metering Tower Design Nylon 6/6 for blocks Nylon 6/6 for blocks 303 Stainless rails 303 Stainless rails Frelon bearings Frelon bearings Designed for minimal holding torque Designed for minimal holding torque Lower block extension houses the fluid pump and linear actuator Lower block extension houses the fluid pump and linear actuator

© 2003 By Default! A Free sample background from Slide 14 Metering Tower Blocks

© 2003 By Default! A Free sample background from Slide 15 Incubation Chamber Design

© 2003 By Default! A Free sample background from Slide 16 Incubator Concepts Aluminum chamber with cartridge heaters or heat strips Aluminum chamber with cartridge heaters or heat strips Evaporation caps to regulate chamber temperature Evaporation caps to regulate chamber temperature

© 2003 By Default! A Free sample background from Slide 17 Incubator Feasibility Heat Strips Heat Strips –Require less area –Better temperature consistency –Built in thermocouples –Able to be controlled by an available PWM channel not used by the DSP motor control board

© 2003 By Default! A Free sample background from Slide 18 Heat Tray Design 0.5 in. 1.5 in. 0.5 in.0.8 in. 1.4 in.1.3 in. Hole in heating element to view slide through

© 2003 By Default! A Free sample background from Slide 19 Motion Control Design

© 2003 By Default! A Free sample background from Slide 20 Motion Control Concepts Motors Brushless DC with limit switch positions DC Stepper motors with photo encoded home position Motor Control Motion control will be done using a TMS320F243 DSP motor control board developed by the sponsor

© 2003 By Default! A Free sample background from Slide 21 Control Feasibility DC brushless and limit switch positioning issues: DC brushless and limit switch positioning issues: –Extra parts –Limits switch lifetime not sufficient –Not enough accuracy –Need for extra I/O lines –Sponsor developed control boards currently control bipolar stepper motors

© 2003 By Default! A Free sample background from Slide 22 Motion Control Design Motion control will be done using the sponsors motor control board Motion control will be done using the sponsors motor control board Dual phase stepper motors will be used for Y-axis movement Dual phase stepper motors will be used for Y-axis movement Linear actuators will be used for Z-axis movement Linear actuators will be used for Z-axis movement

© 2003 By Default! A Free sample background from Slide 23 Motor Control Board Drives two dual-phase stepper motors (24VDC) Drives two dual-phase stepper motors (24VDC) One optional PWM channel One optional PWM channel Interfaces to PC via USB Interfaces to PC via USB

© 2003 By Default! A Free sample background from Slide 24 Z-axis Motor Selection ` Provides the necessary N of thrust needed to move the metering tower Provides the necessary N of thrust needed to move the metering tower Provides inches per step resolution Provides inches per step resolution HIS-26343

© 2003 By Default! A Free sample background from Slide 25 Y-axis Motor Selection Will provide the calculated holding torque of kgf-cm for the metering head Will provide the calculated holding torque of kgf-cm for the metering head When used with the gear selected, will provide in. per 1.8 degree step When used with the gear selected, will provide in. per 1.8 degree step SST85D1810

© 2003 By Default! A Free sample background from Slide 26 Positioning Sequence Design

© 2003 By Default! A Free sample background from Slide 27 User Interface and Inter- Processor Communications (IPC) Design

© 2003 By Default! A Free sample background from Slide 28 User Interface Concepts PC based user interface via Visual Basic PC based user interface via Visual Basic Fully embedded system Fully embedded system

© 2003 By Default! A Free sample background from Slide 29 IPC Concepts PC provides communication PC provides communication Camera kit handles communication Camera kit handles communication –VB Interface –Fully Embedded

© 2003 By Default! A Free sample background from Slide 30 User Interface Feasibility PC based with direct system control PC based with direct system control PC based with indirect system control (6000 series TI DSP) PC based with indirect system control (6000 series TI DSP) Fully embedded system Fully embedded system

© 2003 By Default! A Free sample background from Slide 31 IPC Feasibility Serial SPI Serial SPI –Requires additional I/O lines –Can support multi- masters on same bus –Supported by D3 camera kit and 28x DSP Serial UART Serial UART –Simple to develop –No extra hardware –Supported by virtually all processors I2C and CAN I2C and CAN –Very common communications bus –Will require extra hardware and resources –Not supported by D3 camera kit

© 2003 By Default! A Free sample background from Slide 32 Direct PC Control Design

© 2003 By Default! A Free sample background from Slide 33 D3 Camera Kit Architecture Architecture –TI 6000 series DSP –Additional SRAM, FIFO, CPLD –Omnivision CMOS imager Image Capture Process Image Capture Process –Image read into DSP memory –Image Processing –Image converted from Bayer to LCD Format Necessary Functions Necessary Functions –Edge Detection –Color Analysis

© 2003 By Default! A Free sample background from Slide 34 Future Plans

© 2003 By Default! A Free sample background from Slide 35 Questions?