Slide 1

Mid-semester Presentation Senior Design II October 8, 2013MyBand Fitness

[1]MyBand Fitness Team Members Megan WareElectrical EngineeringSensorsSchematic and Board DesignPackaging Design

Jordan FairleyComputer Engineering Team Leader WebsitePIC programmingTestingPackaging Design

Matthew Eagles Computer Engineering WebsiteGUI programming Schematic and Board Design

Advisor

Dr. Tommy Morris Assistant Professor

Overview IntroductionProblem SolutionConstraintsTechnicalPracticalBlock DiagramHardware Details TestingPackaging MaterialsRemaining Tasks

ProblemOn the market today, monitoring armbands cost anywhere from $100 - $200.

Other armbands do not monitor ambient temperature.

Other products have complex computer application.

Some products have chest straps.

Examples

[2]

[3]Mio 0034US BLK, Energy Pro PlusChest strap with heart rate zone indicators. $99.95 Polar RCS5 Red Watch Chest strap with calorie counter and is water resistant. $179

SolutionDevelop the product to cost around $100.

Monitor ambient temperature.

Design computer application to be easy to operate for any age user.

Monitor heart rate with finger strap. Constraints Technical

Practical Technical ConstraintsNameDescription Battery LifeThe MyBand Fitness device will run for a minimum of four hours. Capturing DataThe device will capture data at a maximum sample rate of 200 Hz and store the data on separate flash memory of 8 GB. DisplayThe wrist device will display sensor values, warning messages.MeasurementThe product will measure heart rate and ambient temperature accurately. Physical ParametersThe MyBand Fitness device will fit comfortably around ones wrist. Practical Constraints TypeName DescriptionEconomicCostThe product will cost around $100. ManufacturabilitySizeThe device will be small enough to wear on users wrist. Economic To be competitive on the market, must cost around $100.

Manufacturability The wrist device will have to be small and weigh less an 1 pound to fit comfortably on the wrist.

Wrist device will have a detachable band. Block Diagram Power SupplyMicroprocessorPulse SensorTemperature SensorFlash MemoryInterface Design Concept

2) Connect flash drive to computer.3) View results from exercises.1) Device captures data while exercising.Hardware Details PCB Schematic

PCB Layout

PCB Size Comparison

PCB PartsPCB Schematic

LCD Screen VDIP1 module Pulse Sensor Pins Temperature Sensor PIC24HJ32GP20216PCB Layout

Pulse Sensor Pins Temperature SensorPIC24LCD Screen VDIP1 ModuleLCD SilkscreenLCD Silkscreen (fixed)PCB Size Comparison

3.375 in. 2.125 in. 2.7 in. 3. 61in. PCB Part PitfallsQuantityPart NumberPart Description1NHD-0216HZ-FSW-FBW-33V3CLCD Display1PIC24HJ32GP202Microprocessor1MLX90614Temperature Sensor1Arduino Pulse Sensor Pulse Sensor1MOD VINCULUM DEV 1 PORTVDIP1 ModuleTesting Testing Plan for PCB

Testing Overview for Sensors

Testing Overview for Software

Overall System TestTesting Plan for PCBDescription Completion PCB Check Party Populate PCB Test microprocessor on boardTest each component on board Overall Finished Product Testing

Test Overview for Sensors Verify pulse sensor accuracy via iPhone app, counting manually, and at health clinic. Verify temperature sensor accuracy by comparing values against two off the shelf digital thermometers.Confirm sensor values on flash drive. Testing Overview for Software Optimize PIC24 coding.Tweak BMP algorithm

Update GUI with chronological stamps.

Verify GUI values with results on displayed on the LCD screen.

Overall System TestTest final design by simulating an exercise routine.

Compare sensor values while exercising against other methods.Packaging Material

Remaining TasksOrder PCB

Populate and test PCB

Code adjustment

Final PackagingQuestions?References [1] http://www.biokineticspt.com/blog/tag/back-pain

[2] http://www.healthchecksystems.com/product/?product_id=24917

[3] https://www.google.com/shopping/product/7517145800000777582?q=chest%20stra p%20heart%20rate%20monitor&hl=en&bav=on.2,or.r_gc.r_pw.r_qf.&bvm=bv.42965579 ,d.eWU&biw=1600&bih=809&sa=X&ei=MCEsUdPhKInk9AT2lYCQCg&ved=0CMYBEPIC MAk

[4] http://www.ictradenet.com/models_pic/PIC24HJ32GP202-E%5ESP.JPG

[5] http://arduino.cc/en/uploads/Main/ArduinoUno_R3_Front.jpg

[6] http://hackedgadgets.com/wp-content/uploads/2011/12/Pulse-Sensor-monitors-Heart-Beats-and-easily-interfaces-to-an-Arduino_4-500x378.png

[7] http://circuits.datasheetdir.com/351/TCRT1000-pinout.jpg

[8] http://embedded-lab.com/blog/?p=5508

[9] https://www.sparkfun.com/products/9570

[10] https://sites.google.com/site/ece3724/labs/lab-10-adc-dac-experiments