Post on 20-Dec-2015
transcript
XPC Control TargetA/D Converter
P10021
4051 MUX
Internal Clock
Counter4051
DEMUX
Counter
Ground
15V Out/In
In/Out
4051 MUX
Internal Clock
Counter
4051 DEMUXCounter
Out/In
In/Out
Ground
15V
Motor Controller
Motor Controller
Voltage Regulator5, 12, 15, GroundVoltage Regulator5, 12, 15, Ground
2 Sum. Op-Amplifiers4 Diff. Op-Amplifiers2 Sum. Op-Amplifiers4 Diff. Op-Amplifiers
PWM Generator(4 Amplifiers)
PWM Generator(4 Amplifiers)
LVAD
13 Pins of DV 15
Current pumps on the market use a cable about the size of a coaxial line
Available CablesAvailable Cables
HeartAssist 5™ Pediatric VADBerlin Heart: INCOR PumpCable: Silicone
Concept Selection: Signal Transmission System
A B C D
MICS400 - 405 MHz
Bluetooth2.4 GHz OFDM Over One Wire 2 Multiplexed Wires
Selection Criteria Weight Rating Notes Wtd Rating Notes Wtd Rating Notes Wtd Rating Notes Wtd
Inter-group compatibility 2 2 4 2 4 2 4.00 3 6.00
Interference5 3
Reserved Medical Band 15 1
Unlicensed 2.4GHz Band 5 3
Orthogonal Signals 15.00 3 15.00
Size2 4 3x5x10 mm 8 3 6x6x1 mm 6 1
Requires multiple parts 2.00 1
Requires multiple parts 2.00
Data Rate3 2 800kbps 6 3 3 Mbps 9 4
500kbps plus wire transfer 12.00 3
Wire Transfer 9.00
Power3 4 -16dBm 12 1 -6 to 4 dBm 3 2 6.00 3 9.00
Wire number reduction5 4 2 wires 20 4 2 wires 20 3 3 wires 15.00 1 4 wires 5.00
Availability of Parts5 1 24-lead? 5 4 Widely 20 2
Requires multiple parts 10.00 4
Requires multiple parts 20.00
Scope of Project falls within rigorous time line 6 1
Difficult test platform 6 2
Difficult test platform 12 2
Unfamiliar topic 12.00 4 24.00
Reliability8 2
Possible loss of signal 16 1
Attenuation of frequency 8 4
Partially wired for control 32.00 4
Wired connection 32.00
Security6 2
Wireless Hacking 12 1 Blue Jacking 6 4 Wired Signal 24.00 4 Wired Signal 24.00
Low probability of error
7 1
Signals sent in separate
packets 7 1
Signals sent in separate
packets 7 3
Signals sent on
orthogonal channels 21.00 4
Less signal processing 28.00
Total Score 104.00 93.00 132.00 146.00
4 currents
3 currents
8 signals
Motor
Pump
Interior Electronics
(Proposed)
72 bits
Differential/Summing Amps6 Total
12-bit A/D6 Total
Transmitter 6 signalsHESA
Hall Effect Sensor Array
2 Total
AMBActive Magnetic Bearing
2 Total
5V
12V
15V
72 bits
5 bits
Wireless Signal Transmission (INT)
Receiver
Motor Controller
PWMAmps
4 Total
FPGAFor Signal Processing
Clock
Motor Control Signal
PWM Control Signals(4 or 8)
Miniaturization Project
ControlXPc
Target
Exterior Electronics(Proposed)
Receiver
Transmitter
72 bits72 bits
5 bits
Wireless Signal Transmission (EXT)
6 signals
FPGAFor Signal Processing
Clock
5 bits
Requires 2 Wires• 15 V Line• Ground Line
Benefits• Eliminates all signal wiresCons• 300kHz channels require data in packets• Higher bit error rate• Limited products available
4 currents
3 currents
8 signals
Motor
Pump
Interior Electronics
(Proposed)
72 bits
Differential/Summing Amps6 Total
12-bit A/D6 Total
USB Transceiver
6 signalsHESA
Hall Effect Sensor Array
2 Total
AMBActive Magnetic Bearing
2 Total
5V
12V
15V
Multi-Channel Single Wire Signal (INT)
Motor Controller
PWMAmps
4 Total
1 signal
4 signals
72 bits
5 bits
5 bits
1-bit Registers
Miniaturization Project
ControlXPc
Target
Exterior Electronics(Proposed)
USB Transceiver
72 bits
Multi-Channel Single Wire Signal (EXT)
5 bits
Requires 3 Wires• 15 V Line• Ground Line• 1 Signal Wire
Benefits• Allows for wider bandwidth• Decrease probability of error• More control of channelCons•Data rate may be too fast
72 bits
5 bits
Concept Selection - Materials
Titanium Silicone UHMWPE Polyurethane
Selection Criteria Weight Rating Notes Wtd Rating Notes Wtd Rating Notes Wtd Rating Notes Wtd
Ease of Fabrication 7 5Machine
Block35 8
Room Temp. Cast
or Overcoating
56 5Machine
Block35 5 Unknown 35
FDA Approved for Similar Applications
8 10Abiocor control case
80 2 Many 16 5Prosthetic
s40 7
Abiocor pump
56
Availability 5 7Off-the-
shelf35 5
Special order
25 9Off-the-
shelf45 3
Angioflex, trademarke
d15
High Thermal Conductance
3 7 15 W/m-K 21 3 0.3 W/m-K 9 3 0.5 W/m-K 9 3Assumed < 1W/m-K
9
Low Wireless Interference
2 0 0 9 18 5 10 5 10
Low Weight 6 3 4.4 g/cc 18 9 1 g/cc 54 9 0.9 g/cc 54 9 1.2 g/cc 54
High Durability 10 10No
corrosion100 10 Inert 100 7 Inert 70 7 Inert 70
Total Score 289 278 263 249
Rank 1 2 3 4
8 currents
3 currents
8 signals
Motor
PumpInterior Electronics
(Proposed)
HESAHall Effect
Sensor Array2 Total
AMBActive Magnetic Bearing
2 Total
5V
12V
15V
Wire- “Less” Proposal (INT)
3-bit CounterClock
1:5 MultiplexerWired Signal
6:1 MultiplexerWired Signal Motor
Controller
PWMAmps4 Total
Differential/Summing Amps6 Total
WiredSignal
4 PWM Control Signals
1 RelaySignal
Miniaturization Project
ControlXPc
Target
Exterior Electronics(Proposed)
1:6 Multiplexer
Wire- “Less” Proposal (EXT)
Clock3-bit Counter
5:1 Multiplexer
Counter
Requires 4 Wires• 15 V Line• Ground Line• 2 Signal Wire•(1 Clock sync wire)
WiredSignal
6 positionsignals
Benefits• Cost Effective• Wired signal more reliable than wirelessCons• Signal only available fraction of time• Will require synchronization commands with project 10021