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System Diagram

Factors

Different parameters that are taken into consideration:

  • scanning device/method
  • sorting system
  • dispensing system

Components Interaction

Preliminary design

lid

Design Goals

body

rotating feeder design

rotating compartment design

  • Automatically sort blood products into specific compartments
  • Utilizing scanner and color code identification
  • Correctly dispense requested blood products
  • Easy to carry and user-friendly
  • Minimize human factor possibilities

Improved Design

Scanning System

Top Lid View

Side Lid View

Dispensing System

Estimating the Size and Dimensions

Anticoagulant bag 25 cm x 14 cm x 0.5 cm

Compartment

Dispensing Testing

Solution description

Blood product information

  • RBC = 350 ml = 350 g
  • FFP = 200 ml = 250 g
  • Platelet = 200 ml to 400 ml = 400 g (max)

Blood Products Compartment

*all of the blood products have densities of ~ 1g/ml

Torque Calculation

  • Servo torque = 3.3 kg.cm
  • Load
  • torque = (mass)*(radius of coil) = (0.4 kg)*(4 cm) = 1.6 kg.cm
  • Thus, each coil can carry up to two blood products
  • Total of 6 bags (max) in the cooler

3-loop dispensing coil

  • Load = 1 anticoagulant bag

= 200g

  • Power = 5V
  • Duration for one full turn = 2.5sec
  • Load = 2 anticoagulant bag

= 400 g

  • Power 5v
  • Duration: 1st turn = 1.5 sec

2nd turn = 2.5 sec

Design a smart cooler that utilizes sensors, micro controllers and motors to automatically sort the blood products

Scanning Testing

2.5 cm

white

red

  • Wiring and coding worked
  • Ambient light affects the sensor
  • Use range of values instead of highest value comparison

green

blue

Raw data

Assembling Progress

Performance Metrics

- Vanderbilt Machine Shop

Performance Criteria

Smart cooler design limitation

  • Inspection assessment
  • ensure each blood product is correctly sorted
  • Efficiency assessment
  • ensure scanning, sorting and dispensing systems work efficiently
  • Because of this limitation, products need to be stored separately

Conclusion

  • Divide our design plan into two stages

-1st stage : Develop dispensing system

-2nd stage: Construct the scanning and sorting system

Needs Assessment

Current Status

The cooler should be:

  • completed the dispensing system
  • currently working on sensor system

Next Plan

  • designing the lid
  • specify the value range of color sensor
  • decide on suitable power source
  • Able to automatically sort the blood products
  • Able to accurately dispense requested products
  • Easy to carry and user-friendly

Blood Products Smart Cooler

Aireen Zulaikha Abdul Aziz

Akhmal Hakim Zainal Ariffin

Ahmad Zulhilmi Abu Bakar

Problem Statement

1. Loss of millions of dollars reported due to human error when transferring platelet in/out of cooler.

2. The total number of platelet wasted 2011 (both Whole-Blood Derived and apheresis) based on the report is 73, 421. Total loss in 110 millions USD! (1500 USD/platelet bag).

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