T EAM 12 - SUPER TANK
O VERVIEW

Project Refresher

A Basic Question

An Ethical Look (Qualitative)

Environmental (Quantitative)

A Personal Perspective
P ROJECT R EFRESHER

Long Range Vehicle (Tank) Control over wireless
network

Operate from anywhere in the world
(Website/Android App)

Collaboration with HKUST

Shared Server

Customizable for new vehicle
features
PSSC S

An ability to send/receive/decode commands from a
controller wirelessly

An ability to control direction/firing capability of a
vehicle

An ability to autonomously avoid obstacles
encountered by the tank

An ability to provide sensor feedback to a wireless
controller

An ability to monitor a battery and prevent
unexpected signal loss by alerting operator
A B ASIC Q UESTION
Me
SUPER TANK
?
E THICAL Q UESTIONS ?

NONE!
E THICAL Q UESTIONS

Will this be used to hurt anyone?

How secure does it have to be? Can it be hacked by
terrorists?

Who should we allow to use SUPER TANK?

Etc..

Not the focus of this analysis.

INDUSTRIAL CASE - We’ll assume DARPA hired us for
honest reasons to deploy the SUPER TANK

RESIDENTIAL CASE – We’ll assume we are producing a
toy.
E THICAL I MPACT

How thoroughly tested should this be?

What regulations should we comply with?

Where should we add warning Labels?

User manual cautions?

Should we add any additional safety
mechanisms?
E THICAL I MPACT

What regulations should we comply with?


It should be FCC Class B compliant.
How thoroughly tested should this be?

All FCC Class B features

Potential injury from cannon

External pinch points of motors

Reliability of all functions related to PSSCs
E THICAL I MPACT

Where should we add warning Labels?


User manual cautions?


If cannon can injure: On chasis
If cannon can injure
Should we add any additional safety
mechanisms?

Physical safe gaurds against motor pinch points
E NVIRONMENTAL I MPACT ?
E NVIRONMENTAL I MPACT
C ONSTRAINTS

We are in the Residential market space

No evaluation of Network

Just Purdue’s Vehicle
E NVIRONMENTAL I MPACT
Halo Tank
SUPER TANK
?
E NVIRONMENTAL I MPACT
Me
SUPER TANK
?
E NVIRONMENTAL I MPACT –
C OSTS
Cost
Cost
Plastic Manufacturing
Plastic
Electronics Manufacturing
Electronics
Battery Manufacturing
Battery
Overall Construction
Overall
Electricity Consumption
Electricity
Quiescent Power
Quiescent
PCB Recycle
PCB
Pandaboard Recycle
Pandaboard
Battery Recycle
Battery
Other Recycling
Other
Potential Throw Away
Potential
Lifecycle Stage Harsnhess Description/Rationale
Manufacturing Low
Plastic takes energy and resources to be manufactured
High
Very energy intensive to make ICs! Estimates from 280kWh/Kg to MWh's/Kg
High
Uses many hazardous chemicals such as Cadmium
Low
In the grand scheme of things, this construction is trivial
In Use
High
Uses ~MWh throughout its useful lifetime
Low
The vehicle will tend to be active when on.
End of Life
High
This PCB is very specific to our SUPER TANK. It would be hard to re-use
Low
If done properly, the Pandaboard can be reused
High
Recycling of batteries again require's use of hazardous chemicals
Low
Our other components are mostly plastic, they canbe melted and re-used easily
High
If these materals get thrown away they are non-bodegradable and potentially hazardous
E NVIRONMENTAL I MPACT –
M ITIGATIONS
Cost
Plastic Manufacturing
Electronics Manufacturing
Battery Manufacturing
Overall Construction
Electricity Consumption
Quiescent Power
PCB Recycle
Pandaboard Recycle
Battery Recycle
Other Recycling
Potential Throw Away
Lifecycle Stage Harsnhess Description/Rationale
Manufacturing Low
Plastic takes energy and resources to be manufactured
High
Very energy intensive to make ICs! Estimates from 280kWh/Kg to MWh's/Kg
High
Uses many hazardous chemicals such as Cadmium
Low
In the grand scheme of things, this construction is trivial
In Use
High
Uses ~MWh throughout its useful lifetime
Low
The vehicle will tend to be active when on.
Proper Labeling and Documentation
End of Life
High
This PCB is very specific to our SUPER TANK. It would be hard to re-use
Low
If done properly, the Pandaboard can be reused
High
Recycling of batteries again require's use of hazardous chemicals
Low
Our other components are mostly plastic, they canbe melted and re-used easily
High
If these materals get thrown away they are non-bodegradable and potentially hazardous
SUPER TANK S C ARBON F OOTPRINT
Super Tank's Carbon Footprint
Component
Amount Rate
Packaging
4Kg
6kG/kG of plastic
Electrical Components 1Kg
2800kWh/Kg
Electricity Use
1.306lb/kWh
866kWh
Total
Cost (Ton CO2) Ref
0.0264 Packaging Report
Comments
Derived from 10lb estimate of total weight, and 2 pound
estimate of electrical component weight
Derived from 10lb estimate of total weight, and 2 pound
estimate of electrical component weight
1.8284 Packaging Report
Reliability Analysis,
Design Constraint 2 Years MTTF (Reliability) -> 2 Years @ 39.3 W =
(39.3*22039.1)Wh = 866kWh
0.565498 Analysis
2.4203
H ALO TANKS C ARBON F OOTPRINT
Halo Tank
H ALO TANKS C ARBON F OOTPRINT
Halo Tank's Carbon Footprint
Component
Amount Rate
Packaging
0.5 6kG/kG of plastic
Electrical Components
0.5 2800kWh/Kg
Electricity Use
242kWh
1.306lb/kWh
Total
Cost (Ton CO2) Ref
0.0033 Packaging Report
Comments
Derived from 10lb estimate of total weight, and 2 pound
estimate of electrical component weight
Derived from 10lb estimate of total weight, and 2 pound
estimate of electrical component weight
0.9142 Packaging Report
Reliability Analysis,
Design Constraint 1 Years MTTF (estimate) -> 1 Years @ 22.0 W = (22.0*11020)Wh
= 242kWh
0.158026 Analysis
1.07553
About (2/5)ths that of SUPER TANK
E NVIRONMENTAL I MPACT
Halo Tank
SUPER TANK
?
>
M Y P ERSONAL C ARBON
F OOTPRINT

Conversation.org -> 14.7 Tons CO2/year

EPA.gov -> 16.0 Tons CO2/year

Averaged is 15.35 Tons CO2/year
M Y P ERSONAL C ARBON
F OOTPRINT

Estimate I will live to be 85.

Estimate my standard of living will increase at 3%
per year

Estimate standards of living are proportional to
your Carbon Footprint.
62
15.35 ∑(1.03)^n = 2783 Tons CO2
n=0
1 Matt =~ 1000 Super Tanks
E NVIRONMENTAL I MPACT
Me
SUPER TANK
<<
2.42 Tons CO2
2783 Tons CO2
E NVIRONMENTAL I MPACT
Me
SUPER TANK
<
1.21 Tons/Year
15.35 Tons/Year
Q UESTIONS ?