System Diagram
Factors
Different parameters that are taken into consideration:
- scanning device/method
- sorting system
- dispensing system
Components Interaction
Design Goals
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
Scanning System
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
- Wiring and coding worked
- Ambient light affects the sensor
- Use range of values instead of highest value comparison
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
- 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).