Project Carna Concept Review

Project Carna Concept Review

Team Carna [P08025]

CARNA System Diagram

[WET] [DRY]

Electrical Conduit _Junct.

Box MUX DAQ Data Center Power Plant O u t to D ry S y s te m s Health Monitor LUI B a rr ie r Junct. Box Tank Control Sensors/ Actuators Mock Circulation Loops x10 Control Sensors/ Actuators

Ten vs. One

Single Large Tank with Ten Modular Loops

Ten Small Modular Tanks and Loop

Design Cost Reliability Complexity Redundant Total

10 - + - - -2

One Tank System

Single Tank with Ten Mock Loop Modules

Tanks Cost Machine Corrosive Total

Plastic + + + 3

Composite - - + -1

Loop Redundancy and Modular Sensor Replacement

Heat, Cooling, and Disinfection

Heat Power Cost Ease of Implementation Total

Immersion Heater + + + 3

Tankless Heater - - + -1

Heat Pump 0 - 0 -1

Computer Waste Heat + - - -1

Cooling Power Cost Ease of Implementation Response Time Control Total

Heat Tubes + - + - 0 0 Air Heat Ex - 0 + 0 + 1 Water Hat Ex - 0 0 0 + 0 Heat Pup - - 0 + + 0 Refrigerant - - - + + -1 Convection + + - - 0 0 Saline in Cues - + - - - -3

Disinfection Power Cost Ease of Implementation Maintain Effect Total

UV-C - - - - + -3 Chlorine Generator - - - - + -3 Chlorine/Bleach 0 + + 0 + 3 Disinfect Tubes + - + 1 Filter + 0 + - + 2 Do Nothing + + + + - 3 Sucker Fish 0 0 + 0 + 2

Level Sensors Power Cost Ease of Implementation Maintain Effect Response TimeTotal Electro-Optic - - 0 - + + -1 Continuous Level - 0 0 - + + 0 Infrared - - 0 - + + -1 Floating + + + - + 0 3 Mechanical Device + + + + + - 4

Flow Sensors Power Cost Ease of Implementation Maintain Effect Response TimeTotal

Boolean + + + + + + 6

Volumetric 0 - + + + 0 2

Combination with Temp - - + + + 0 1

Pressure Sensors Power Cost Ease of Implementation Maintain Effect Response TimeTotal

Pressure Transmitter 0 + 0 0 + + 3

Pressure Sensor 0 - 0 0 + + 1

Pressure Sensor with Display - - 0 0 + + 0

Pressure Transducer + - 0 0 + + 2

Salinity Sensors Power Cost Ease of Implementation Maintain Effect Response TimeTotal

Probe - - 0 - + + -1

Refractometer + + - - - - -2

Temperature Sensors Power Cost Ease of Implementation Maintain Effect Response TimeTotal

Combination with Pressure - - 0 0 + + 0

Thermocouple Probes - - 0 0 + + 0

Basic Thermocouple + + + - + + 4

Thermistor + 0 + 0 + + 4

Heat Transfer Through Pipe [Excel]

Pressure loss, tank to pump

Flow Rate (L/min)

H e a d ( in ) 0.375 0.438 0.500 0.563 0.625 0.688 0.750 0.813 0.875 0.938 1.000 Pipe Dia (in)

Head Loss Analysis [Excel]

Flow and Pressure Control

What is needed?

Pressure control at the inlet and outlet of the LVAD

What are the specs?

Inlet: -20 to 50 mmhg (-0.39 to 0.97 psi) Outlet: 0 to 150 mmhg (0 to 2.9 psi)

What are the options?

0 0 + -0 Gate -2 0 0 -Pinch +1 0 -+ + Orifice/Restrictor -2 -+ Needle -1 + 0 -Solenoid 0 -+ 0 0 Throttle +3 + + + 0 Ball Total “size” Variability (x2) $ Power Req’d Valve/Restrict. Type

LVAD Flow and Pressure Control

+1 0 + + + 0 -+2 0 + + + 0 0 -Electric Actuation -Separate -Packaged 0 0 + + + -Pneumatic Actuation 0 0 -0 + + 0 Manual Total Step Size Consistency Precision Ease of Use Ease of Integration $ Power Valve Control

What is the proposed solution?

Integrate a ball valve before and after the LVAD, to be controlled by DC servo motors. A worm drive will also be implemented, and a sensor to aid in validating the valve position.

Flow and Pressure Control

Ball Valves:

• Easy to operate

• Can maintain & regulate flow • High volume

• High temp • High pressure

• Corrosion resistance (Brass/Bronze) • Full Port (Unrestricted Flow)

• Flow through the valve = valve pipe size

Flow and Pressure Control

Worm Drives:

• Increased torque at a decreased speed

• Ideal for small electric motors (high-speed/low-torque)

• Can be “self-locking” (non reversible direction of transmission)

Worm Drive System (mcmastercarr.com)

How will it be implemented?

The handle of the ball valve will be removed and the stem of the valve will be integrated into a worm drive system, powered by the electric motor. There will be a sensor (to be determined) put into place

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100BaseT Internal Network

DAQ 1 (PC)

DAQ 2 (PC)

Breakout Box Breakout Box

Multiplexer Multiplexer Data Management Center Health Monitor H ea lt h N e tw or k C on tr ol N e tw or k H ea lt h N e tw or k LUI

DAQ Cost Ease of Implementation Reliability Power Scalable Total

Redundant PCs, non-multiplexed - + + 0 0 1

Redundant PCs, multiplexed 0 0 0 0 0 0

NI embedded - + 0 + + 2

Custom Hardware + - - + + 1

Test Equipment (oscilloscopes) - - - -5

Redundant NI embedded - + + 0 + 2

Wiring Cost Form Factor Noise Rejection Total

Single Strand + 0 - 0

Twisted Pair 0 + + 2

Coaxial - - + -1

MCU Phone on A Chip H e a lt h N e tw o rk Function: Communicate with

main subsystems. Get health status. Periodically ship data to the Server for long-term storage. The ability to voice-call/sms and email through cellular

network. Cellular Network

Health Monitor

Health Monitor Platform Cost Ease of Implementation Reliability Power Total

Microcontroller + - + + 2

PC - + 0 - -1

External Communication Cost Ease of Implementation Reliability Power Total

VOIP - 0 - 0 -2

Phone on a chip 0 0 + 0 1

TCP/IP/SMTP 0 + - 0 0

Health Network Protocol Cost Ease of Implementation Reliability Power Total

CAN bus 0 0 + 0 1

I2C 0 + - 0 0

RS232 0 - 0 0 -1

Monitoring Approach Cost Ease of Implementation Reliability Power Total

Health Monitor Loop 1 Controller Loop 2 Controller Loop 3 Controller Loop 4 Controller

…

Health Monitor Network – RS232 Design Concept

…

Fault Tolerant Switching Create requested output voltages main power auxiliary power A.T.S. (Automatic Transition Switch) Quality Surge

Suppression Energy Storage 1

Energy Storage 2 Create requested _{output voltages}

Manuel by-pass Manuel by-pass V1A V1B V10A V10B

Off the shelf UPS

VAC,1

VAC,2

Auto Transfer Switch Surge Suppression DC Power Supply Battery Backup Module UPS UPS Batteries Redundancy Module DC Power Supply Battery Backup Module Batteries Redundancy Module DC AC1 AC2 Main Aux

Power Plant

Power Plant Cost Ease of Implementation Reliability Maintanence Total

Industrial DC supplies - + + 0 1

Benchtop DC supplies + 0 0 0 1

Lead acid batteries + 0 0 + 2

Li-Ion Batteries - 0 0 + 0

Flywheel 0 - + - -1

Off-the-shelf UPS - + 0 + 1

Diode paralleling + 0 0 0 1

Data Management Center DAQ 1 DAQ 2 C o n tro l N e tw o rk R S 2 3 2 LUI WEB Server SFTP SMTP SSH Redundant Storage Array

Internal Network Switch 10/100/1000 Base-T

Linux OS

Health Network RS232 Who is Master DAQ ?

Organize Data S e n d M a s te r D a ta O n ly ? ? Firewall World-Access Loop and Tank

Parameters Accessible From LUI

Data Management Center

Data Storage Manager Cost Ease of Implementation Reliability Power Total

PC + + _ _ 0

Embedded _ _ + 0 -1

Operating System Cost Ease of Implementation Reliability Power Total

Linux + 0 + 0 2

Windows _ + _ 0 -1

Labview RT OS 0 _ + 0 0

Storage Medium Cost Ease of Implementation Reliability Power Total

IDE + + 0 0 2

SATA 0 + 0 0 1

Solid State _ 0 + + 1

Punch Cards + _ + 0 1

LUI Cost Ease of Implementation Reliability Power Total

Touchscreen + + 0 0 2

Keyboard/mouse/monitor + + 0 0 2

LUI Platform Cost Ease of Implementation Reliability Power Total

Embedded _ _ 0 + -1

MCU w/ ADC, PWMout, And 2 Serial Ports

AI Temperature X4 AI Pressure X4 AI Flow Rate X4

Digital Output X10 [Shut off Valves]

PWM Output X4 [Actuators] H e a lt h N e tw o rk C o n tr o l N e tw o rk

Flow Loop Controller

Loop Controller Cost Ease of Implementation Reliability Power Total Single Controller

(control all ten loops) + 0 - + 1

One per loop 0 + 0 0 1

Two per loop

Parallel Redundant 0 0 + 0 1

Platform Cost Ease of Implementation Reliability Power Total

PC - - - - -4

MCU w/ ADC, PWMout, And 3 Serial Ports

Parallel Redundant Flow Loop Controllers

MCU w/ ADC, PWMout, And 3 Serial Ports

Handshaking H e a lt h N e tw o rk C o n tr o l N e tw o rk H e a lt h N e tw o rk C o n tr o l N e tw o rk

All input signals will be shared between the two MCU’s. They will handshake With each other and with the Health Monitor. Only one MCU will be allowed to actuate the System at any given moment. The other will remain in sleep mode Until it is required to function. (i.e. if the first MCU fails).

30 LVADR2-Simulator (Microcontroller or PC NI/Labview) D A C A rr a y HE 1 HE 2 HE 3 HE 4 HE 5 HE 6 HE 7 HE 8 CARNA Differenced HE 1 Differenced HE 2 Differenced HE 3 Differenced HE 4 5V GRND AMB 1 AMB 2 Motor Speed AMB 1 AMB 2 Motor Speed Pump Simulator

31

Six Principles

of Heuristic Evaluation

PRINCIPLES

(Offers more specific direction than the more general set of rules when it comes to problem resolution)

1. Visibility

Keeping all needed options and materials for a given task visible without distracting the user with extraneous or redundant information

2. Feedback

Keeping users informed of actions or interpretations, changes of state or condition, and errors or exceptions that are relevant and of interest to the user through clear, concise and unambiguous language familiar to users 3. Structure

Organize the user interface purposefully, in meaningful and useful ways based on clear, consistent models that are apparent and recognizable to users.

Six Principles

of Heuristic Evaluation (Cont.)

4. Reuse

Systems should use language and structure in a consistent fashion Identical terminology should be used for

- Prompts - Menu

- Help screens 5. Tolerance

Reducing the cost of mistakes and misuse by allowing, undoing and redoing while also preventing errors

6. Simplicity

Make simple, common tasks simple to do, communicating clearly and simply in the users own language

Start Panel

Emergency Situations

• In Emergency Situations, the User Interface screen will go RED (also a auditory alert sound of 40-70 dBA) and immediately goes to the

maintenance program with a full and complete description of the problem. • Secondary system will also activate when the emergency situation arises

until the maintenance engineer arrives and deals with the problem.

• The maintenance engineer will have immediate access to all of the UI and have an full and descriptive procedure on screen to fix the problem.