Post on 29-Nov-2014
description
Train coder/decoder
ECE 775 - project
Ivan Razumenić
Introduction
Introduction
Introduction
R6
10kΩ
D7
1N4148
R8
37kΩ
R9
30kΩ
R111kΩ
R121.9kΩ
R131.5kΩ
R1414.6kΩ
VCC9V
XSC4
A B
Ext Trig+
+
_
_ + _
D8
1N4148
D9
1N4148
V5 -5V 5VV4
1 V
R101kΩ
D10
1N4148
R15
37kΩ
D11
1N4148
R16
30kΩ
D12
1N4148
R171.9kΩ
R181.5kΩ
R1914.6kΩ
VEE-9V
Idea
R6
10kΩ
D7
1N4148
R8
37kΩ
R9
30kΩ
R111kΩ
R121.9kΩ
R131.5kΩ
R1414.6kΩ
VCC9V
XSC4
A B
Ext Trig+
+
_
_ + _
D8
1N4148
D9
1N4148
V5 -5V 5VV4
1 V
R101kΩ
D10
1N4148
R15
37kΩ
D11
1N4148
R16
30kΩ
D12
1N4148
R171.9kΩ
R181.5kΩ
R1914.6kΩ
VEE-9V
Goal
R6
10kΩ
D7
1N4148
R8
37kΩ
R9
30kΩ
R111kΩ
R121.9kΩ
R131.5kΩ
R1414.6kΩ
VCC9V
XSC4
A B
Ext Trig+
+
_
_ + _
D8
1N4148
D9
1N4148
V5 -5V 5VV4
1 V
R101kΩ
D10
1N4148
R15
37kΩ
D11
1N4148
R16
30kΩ
D12
1N4148
R171.9kΩ
R181.5kΩ
R1914.6kΩ
VEE-9V
coder
decoder
Coder design
R6
10kΩ
D7
1N4148
R8
37kΩ
R9
30kΩ
R111kΩ
R121.9kΩ
R131.5kΩ
R1414.6kΩ
VCC9V
XSC4
A B
Ext Trig+
+
_
_ + _
D8
1N4148
D9
1N4148
V5 -5V 5VV4
1 V
R101kΩ
D10
1N4148
R15
37kΩ
D11
1N4148
R16
30kΩ
D12
1N4148
R171.9kΩ
R181.5kΩ
R1914.6kΩ
VEE-9V
voltage controlled oscillator
Coder design
R6
10kΩ
D7
1N4148
R8
37kΩ
R9
30kΩ
R111kΩ
R121.9kΩ
R131.5kΩ
R1414.6kΩ
VCC9V
XSC4
A B
Ext Trig+
+
_
_ + _
D8
1N4148
D9
1N4148
V5 -5V 5VV4
1 V
R101kΩ
D10
1N4148
R15
37kΩ
D11
1N4148
R16
30kΩ
D12
1N4148
R171.9kΩ
R181.5kΩ
R1914.6kΩ
VEE-9V
large voltage drop
Coder design
R6
10kΩ
D7
1N4148
R8
37kΩ
R9
30kΩ
R111kΩ
R121.9kΩ
R131.5kΩ
R1414.6kΩ
VCC9V
XSC4
A B
Ext Trig+
+
_
_ + _
D8
1N4148
D9
1N4148
V5 -5V 5VV4
1 V
R101kΩ
D10
1N4148
R15
37kΩ
D11
1N4148
R16
30kΩ
D12
1N4148
R171.9kΩ
R181.5kΩ
R1914.6kΩ
VEE-9V
low voltage drop
Coder design
R6
10kΩ
D7
1N4148
R8
37kΩ
R9
30kΩ
R111kΩ
R121.9kΩ
R131.5kΩ
R1414.6kΩ
VCC9V
XSC4
A B
Ext Trig+
+
_
_ + _
D8
1N4148
D9
1N4148
V5 -5V 5VV4
1 V
R101kΩ
D10
1N4148
R15
37kΩ
D11
1N4148
R16
30kΩ
D12
1N4148
R171.9kΩ
R181.5kΩ
R1914.6kΩ
VEE-9V
common collector
amp.
this would work too
Coder design
R6
10kΩ
D7
1N4148
R8
37kΩ
R9
30kΩ
R111kΩ
R121.9kΩ
R131.5kΩ
R1414.6kΩ
VCC9V
XSC4
A B
Ext Trig+
+
_
_ + _
D8
1N4148
D9
1N4148
V5 -5V 5VV4
1 V
R101kΩ
D10
1N4148
R15
37kΩ
D11
1N4148
R16
30kΩ
D12
1N4148
R171.9kΩ
R181.5kΩ
R1914.6kΩ
VEE-9V
common collector
amp.
Coder design
R6
10kΩ
D7
1N4148
R8
37kΩ
R9
30kΩ
R111kΩ
R121.9kΩ
R131.5kΩ
R1414.6kΩ
VCC9V
XSC4
A B
Ext Trig+
+
_
_ + _
D8
1N4148
D9
1N4148
V5 -5V 5VV4
1 V
R101kΩ
D10
1N4148
R15
37kΩ
D11
1N4148
R16
30kΩ
D12
1N4148
R171.9kΩ
R181.5kΩ
R1914.6kΩ
VEE-9V
galvanic isolation
Coder Design
R6
10kΩ
D7
1N4148
R8
37kΩ
R9
30kΩ
R111kΩ
R121.9kΩ
R131.5kΩ
R1414.6kΩ
VCC9V
XSC4
A B
Ext Trig+
+
_
_ + _
D8
1N4148
D9
1N4148
V5 -5V 5VV4
1 V
R101kΩ
D10
1N4148
R15
37kΩ
D11
1N4148
R16
30kΩ
D12
1N4148
R171.9kΩ
R181.5kΩ
R1914.6kΩ
VEE-9V
VCO
control voltage
Coder Design
R6
10kΩ
D7
1N4148
R8
37kΩ
R9
30kΩ
R111kΩ
R121.9kΩ
R131.5kΩ
R1414.6kΩ
VCC9V
XSC4
A B
Ext Trig+
+
_
_ + _
D8
1N4148
D9
1N4148
V5 -5V 5VV4
1 V
R101kΩ
D10
1N4148
R15
37kΩ
D11
1N4148
R16
30kΩ
D12
1N4148
R171.9kΩ
R181.5kΩ
R1914.6kΩ
VEE-9V
VCODAC
Decoder design
R6
10kΩ
D7
1N4148
R8
37kΩ
R9
30kΩ
R111kΩ
R121.9kΩ
R131.5kΩ
R1414.6kΩ
VCC9V
XSC4
A B
Ext Trig+
+
_
_ + _
D8
1N4148
D9
1N4148
V5 -5V 5VV4
1 V
R101kΩ
D10
1N4148
R15
37kΩ
D11
1N4148
R16
30kΩ
D12
1N4148
R171.9kΩ
R181.5kΩ
R1914.6kΩ
VEE-9V
VCODACPLL
Decoder design
R6
10kΩ
D7
1N4148
R8
37kΩ
R9
30kΩ
R111kΩ
R121.9kΩ
R131.5kΩ
R1414.6kΩ
VCC9V
XSC4
A B
Ext Trig+
+
_
_ + _
D8
1N4148
D9
1N4148
V5 -5V 5VV4
1 V
R101kΩ
D10
1N4148
R15
37kΩ
D11
1N4148
R16
30kΩ
D12
1N4148
R171.9kΩ
R181.5kΩ
R1914.6kΩ
VEE-9V
VCODACPLL ADC
Decoder design
R6
10kΩ
D7
1N4148
R8
37kΩ
R9
30kΩ
R111kΩ
R121.9kΩ
R131.5kΩ
R1414.6kΩ
VCC9V
XSC4
A B
Ext Trig+
+
_
_ + _
D8
1N4148
D9
1N4148
V5 -5V 5VV4
1 V
R101kΩ
D10
1N4148
R15
37kΩ
D11
1N4148
R16
30kΩ
D12
1N4148
R171.9kΩ
R181.5kΩ
R1914.6kΩ
VEE-9V
VCODACPLL ADC
higher frequency oscillationsexpect some noise
Decoder design
R6
10kΩ
D7
1N4148
R8
37kΩ
R9
30kΩ
R111kΩ
R121.9kΩ
R131.5kΩ
R1414.6kΩ
VCC9V
XSC4
A B
Ext Trig+
+
_
_ + _
D8
1N4148
D9
1N4148
V5 -5V 5VV4
1 V
R101kΩ
D10
1N4148
R15
37kΩ
D11
1N4148
R16
30kΩ
D12
1N4148
R171.9kΩ
R181.5kΩ
R1914.6kΩ
VEE-9V
VCODACPLL ADC
higher frequency oscillations
BP filter
expect some noise
Design
R6
10kΩ
D7
1N4148
R8
37kΩ
R9
30kΩ
R111kΩ
R121.9kΩ
R131.5kΩ
R1414.6kΩ
VCC9V
XSC4
A B
Ext Trig+
+
_
_ + _
D8
1N4148
D9
1N4148
V5 -5V 5VV4
1 V
R101kΩ
D10
1N4148
R15
37kΩ
D11
1N4148
R16
30kΩ
D12
1N4148
R171.9kΩ
R181.5kΩ
R1914.6kΩ
VEE-9V
VCODACPLL ADC
BP filter
only oneone-sided supply
voltage regulator
voltage regulator
It works
R6
10kΩ
D7
1N4148
R8
37kΩ
R9
30kΩ
R111kΩ
R121.9kΩ
R131.5kΩ
R1414.6kΩ
VCC9V
XSC4
A B
Ext Trig+
+
_
_ + _
D8
1N4148
D9
1N4148
V5 -5V 5VV4
1 V
R101kΩ
D10
1N4148
R15
37kΩ
D11
1N4148
R16
30kΩ
D12
1N4148
R171.9kΩ
R181.5kΩ
R1914.6kΩ
VEE-9V
VCODACPLL ADC
BP filter
voltage regulator
voltage regulator
It works, under one condition
R6
10kΩ
D7
1N4148
R8
37kΩ
R9
30kΩ
R111kΩ
R121.9kΩ
R131.5kΩ
R1414.6kΩ
VCC9V
XSC4
A B
Ext Trig+
+
_
_ + _
D8
1N4148
D9
1N4148
V5 -5V 5VV4
1 V
R101kΩ
D10
1N4148
R15
37kΩ
D11
1N4148
R16
30kΩ
D12
1N4148
R171.9kΩ
R181.5kΩ
R1914.6kΩ
VEE-9V
VCODACPLL ADC
BP filter
voltage regulator
voltage regulator
Houston, we have a problem
R6
10kΩ
D7
1N4148
R8
37kΩ
R9
30kΩ
R111kΩ
R121.9kΩ
R131.5kΩ
R1414.6kΩ
VCC9V
XSC4
A B
Ext Trig+
+
_
_ + _
D8
1N4148
D9
1N4148
V5 -5V 5VV4
1 V
R101kΩ
D10
1N4148
R15
37kΩ
D11
1N4148
R16
30kΩ
D12
1N4148
R171.9kΩ
R181.5kΩ
R1914.6kΩ
VEE-9V
VCODACPLL ADC
BP filter
voltage regulator
voltage regulator
SNR too low
How to increase SNR?
R6
10kΩ
D7
1N4148
R8
37kΩ
R9
30kΩ
R111kΩ
R121.9kΩ
R131.5kΩ
R1414.6kΩ
VCC9V
XSC4
A B
Ext Trig+
+
_
_ + _
D8
1N4148
D9
1N4148
V5 -5V 5VV4
1 V
R101kΩ
D10
1N4148
R15
37kΩ
D11
1N4148
R16
30kΩ
D12
1N4148
R171.9kΩ
R181.5kΩ
R1914.6kΩ
VEE-9V
VCODACPLL ADC
BP filter
voltage regulator
voltage regulator
lower noise power
lower BW
How to increase SNR?
R6
10kΩ
D7
1N4148
R8
37kΩ
R9
30kΩ
R111kΩ
R121.9kΩ
R131.5kΩ
R1414.6kΩ
VCC9V
XSC4
A B
Ext Trig+
+
_
_ + _
D8
1N4148
D9
1N4148
V5 -5V 5VV4
1 V
R101kΩ
D10
1N4148
R15
37kΩ
D11
1N4148
R16
30kΩ
D12
1N4148
R171.9kΩ
R181.5kΩ
R1914.6kΩ
VEE-9V
VCODACPLL ADC
BP filter
voltage regulator
voltage regulator
lower noise power
lower BW
How to increase SNR?
R6
10kΩ
D7
1N4148
R8
37kΩ
R9
30kΩ
R111kΩ
R121.9kΩ
R131.5kΩ
R1414.6kΩ
VCC9V
XSC4
A B
Ext Trig+
+
_
_ + _
D8
1N4148
D9
1N4148
V5 -5V 5VV4
1 V
R101kΩ
D10
1N4148
R15
37kΩ
D11
1N4148
R16
30kΩ
D12
1N4148
R171.9kΩ
R181.5kΩ
R1914.6kΩ
VEE-9V
VCODACPLL ADC
BP filter
voltage regulator
voltage regulator
lower noise power
lower BW
How to increase SNR?
increase signal power
R6
10kΩ
D7
1N4148
R8
37kΩ
R9
30kΩ
R111kΩ
R121.9kΩ
R131.5kΩ
R1414.6kΩ
VCC9V
XSC4
A B
Ext Trig+
+
_
_ + _
D8
1N4148
D9
1N4148
V5 -5V 5VV4
1 V
R101kΩ
D10
1N4148
R15
37kΩ
D11
1N4148
R16
30kΩ
D12
1N4148
R171.9kΩ
R181.5kΩ
R1914.6kΩ
VEE-9V
VCODACPLL ADC
BP filter
voltage regulator
voltage regulator
common collector
amp.
Solution?
R6
10kΩ
D7
1N4148
R8
37kΩ
R9
30kΩ
R111kΩ
R121.9kΩ
R131.5kΩ
R1414.6kΩ
VCC9V
XSC4
A B
Ext Trig+
+
_
_ + _
D8
1N4148
D9
1N4148
V5 -5V 5VV4
1 V
R101kΩ
D10
1N4148
R15
37kΩ
D11
1N4148
R16
30kΩ
D12
1N4148
R171.9kΩ
R181.5kΩ
R1914.6kΩ
VEE-9V
VCODACPLL ADC
BP filter
voltage regulator
common collector
amp.
Coding
Questions
Train Coder/Decoder
Ivan Razumenić