Volumetric Airflow Gauge

bendembarrassElectronics - Devices

Nov 2, 2013 (3 years and 8 months ago)

272 views

Fault Tree Analysis

Volumetric Airflow Gauge


Failure Modes

Administrator

Error

Failure to create

seal

Electrical

Failure

Design/Casing

Failure

Improper

Administration

Incorrect

Vol. reading

Regurgitation

Into Device

Incooperation

Improper

Training

A

Patient

Complications

B

One
-
way flow

valve/gauge

Block/malfunc.


Group Members


Justin Kiswardy


Mike Nilo


Matt Chakan


Failure to use

device

Improper Device

Attachment

Inaccurate

Volumetric Display

Over/under

inflation

Increased expiratory

Air pressure

Lung Tissue

Damage

Design Failure
-
A

A


Gasket/Seal

Failure

Water/Liquid

enters housing


Poor Material

Selection


Tube cracking

Environmental

Effects

Non
-
standardized

Fitting

Air Leak

Low

Marketability


Air Leak



Inaccurate

reading



Delayed

Resusc.



Early

heat strain


Delayed

Resusc.

Damage to

Circuit

Damage to

Batteries


Microbial

Buildup



Dimensional

Failure

Alter/Increase

Weight Specs.

Loose Elect.

Components

Shifting of

Display

Mechanical Failure
-

B

B

Mass Flow

Device

No

Functionality


LEDs.

Lifetime

fatigue

Unexpected

Part malfunc.


Electrical Circuit

Malfunction


Improper

Calibration

Circuit Break

Over/Under

Inflation

Circuit

Break

Burnout.

Power Indicator/

Metronome

Malfunction

Display

LED

Malfunction

Inaccurate

Display


No

Display


Circuit

Break

Thermistor

Malfunction

Tubing

Crack

Improper

Resistance/

Temp. reading



Components

Enter tubing/

Patients air

way

Over/under

inflation

Asphys. of

Patient/lung

Damage

Microcontroller

C

C

Incorrect

Proramming

Improper Pin

Placement

No

Functionality

Inaccurate

Display

No

Functionality

Microcontroller Failure
-
C