Transcript Slide 1

Rev.13.01
Electromyogram ; EMG
Surface Electromyogram ; sEMG
วัตถุประสงค์
Copyright © S.Witthayapradit.2009
ศึกษาเกีย่ วกับการวัดสัญญาณไฟฟ้ ากล้ ามเนื้อ
ร้ ูจักพาสซีฟอิเล็กโทรดกับแอกทีฟอิเล็กโทรด
เรี ยนร้ ูการใช้ ประโยชน์ สัญญาณกล้ ามเนื้อทาง
อิเล็กทรอนิกส์
หัวข้ อบรรยาย
Copyright © S.Witthayapradit.2009
 Electromyograph ; EMG
 Bionic
 Electrode & Active Electrode
 EMG Measurement
 EMG Applications
Electromyograph ; EMG
Copyright © S.Witthayapradit.2009
Bionic
Copyright © S.Witthayapradit.2009
Jesse Sullivan
Bionic Leg
Copyright © S.Witthayapradit.2009
Peng Shu lin
Bionic Arm
Copyright © S.Witthayapradit.2009
Electrode
Copyright © S.Witthayapradit.2009
Active Electrode
Copyright © S.Witthayapradit.2009
Active Electrode
Copyright © S.Witthayapradit.2009
Electromyograph Measurement
Copyright © S.Witthayapradit.2009
0
Electrodes
0
0
0
0
Amplifier
+
BSF
Rectifier
Low pass
Filter
Analog
Output
Electromyograph Measurement
Electrodes
Copyright © S.Witthayapradit.2009
Amplifier
-
BSF
+
Rectifier
Low pass
Filter
MAX44XX
Instrumentation Amp.
 MAX4462 [1/10/100]
 INA128 [1-10,000]
 INA129 [1-10,000]
Analog
Output
Electromyograph Measurement
Electrodes
Copyright © S.Witthayapradit.2009
Amplifier
-
BSF
+
Rectifier
Low pass
Filter
Analog
Output
INA128
INA129
Instrumentation Amp.
 MAX4462 [1/10/100]
 INA128 [1-10,000]
 INA129 [1-10,000]
Electromyograph Measurement
Copyright © S.Witthayapradit.2009
AV= -1
Electromyograph Measurement
Copyright © S.Witthayapradit.2009
“ Frequency Response of
Instrumentation Amplifier...”
70
VCC
1
8
3
-
GS 1
GS 2 +
+
VD B
60
OUT
6
RE F
1Va c
0Vd c
2
V-
V1
R1
50
V+
7
U1
50
5
4
INA128
VE E
0
0
0
40
0.001
VDB(C1:1)
0.1
Frequency(KHz)
10
100
Electromyograph Measurement
Copyright © S.Witthayapradit.2009
2.0mV
“ Time domain of
0V
Instrumentation Amplifier… “
-2.0mV
V
v(v1:+,V1:-)
7
VCC
100mV
V-
V2
VOFF = 0
VAMPL = 50m
FREQ = 50Hz
0
+
OUT
6
REF
3
GS1
GS2 +
0V
SEL>>
-100mV
V(V1:+)
1.0V
INA128
5
1
8
-
V-
V1
emg1m.txt
2
4
V+
R1
50
V+
V
U1
0V
VEE
0
-1.0V
0s
1.0s
V(U1:OUT)
Time
2.0s
Electromyograph Measurement
Copyright © S.Witthayapradit.2009
“ Twin-T Band Stop Filter … “
-
OUT
R
3
Vin
+
1
MAX4124EUK
47K
2
47K
V-
R
V+
U2
4
VDB
5
VCC
2C
136nF
VEE
R4
1k
VCC
68nF
68nF
V+
1
-
V-
C
+
U3
4
OUT
MAX4124EUK
2
C
5
0.5R
23.5K
3
R5
2.2K
VEE
0
Electromyograph Measurement
Copyright © S.Witthayapradit.2009
“ Frequency Response of
0
Twin-T Band Stop Filter … “
47K
47K
3
-20
1
OUT
MAX4124EUK
+
2
R
2C
136nF
VEE
-40
1.0Hz
10Hz
VDB(U2:-)
5
V+
68nF
C
-
V-
C
R4
1k
VCC
0.5R
23.5K
+
U3
4
1
OUT
68nF MAX4124EUK
2
Vin
R
-
V-
U2
4
V+
5
VDB
VCC
VEE
100Hz
Frequency
3
R5
2.2K
0
1.0KHz
Electromyograph Measurement
Copyright © S.Witthayapradit.2009
1.0V
“ Time domain of
Twin-T Band Stop Filter … “
0V
SEL>>
-1.0V
VCC
5
V(R7:1)
1.0V
V+
-
V
U4
4
OUT
R8
3
+
1
MA X4124 EUK
V
0V
47K
2
47K
V-
R7
Vemg
emg.txt
C7
136nF
R10
1k
Vi nt
VOFF = 0
VA MPL = 100m
FRE Q = 5 0Hz
1
68nF
68nF
V+
C9
-
V-
C8
5
R9
23.5K
1.0s
+
Time
U5
4
OUT
MA X4124 EUK
-1.0V
0s
V(R10:2)
VCC
2
0
VE E
3
R11
2.2K
VE E
0
2.0s
V
Copyright © S.Witthayapradit.2009
V
Electromyograph Measurement
C4
“ DC Remove … “
AC = 1
DC = 0
VOFF = 0.5
VA MPL = 0.5
FRE Q = 1k
1u
V4
R7
180K
“ Time domain …. “
1.0V
“ Frequency Response …. “
0
0
-10
0
0.5V
fC 
1
2 R C
0V
-0.5V
0s
V(C4:1)
1.0ms
V(C4:2)
2.0ms
Time
-20
100mHz
VdB(C4:2)
1.0Hz
10Hz
Frequency
100Hz
3.0ms
Electromyograph Measurement
Copyright © S.Witthayapradit.2009
2.0V
V
V
“ DC Remove … “
1.0V
C4
1u
Vs
emg.txt
R7
180K
0V
Vdc
0.5Vdc
0
0
-1.0V
0s
1.0s
V(Vs:+)
V(C4:2)
Time
2.0s
Electromyograph Measurement
“ Rectifier … “
R8
R9
180K
180K
U11
4
-
D1
D1N4001
V+
V4
5
VCC
OUT
3
+
V-
AC = 1
DC = 0
VOFF = 0
VA MP L = 1
FRE Q = 1 00
V
V
Copyright © S.Witthayapradit.2009
1
1.0V
MA X4124 EUK
2
0
0
VE E
2.0V
0V
1.0V
-1.0V
0s
10ms
V(D1:2)
V(V4:+)
Time
0V
-2.0V
0V
V(D1:2)
V_V4
2.0V
20ms
30ms
Electromyograph Measurement
Copyright © S.Witthayapradit.2009
“ Rectifier … “
V
V
1.0V
R8
R9
180K
180K
VCC
+
V+
2
3
0
D1
D1N4001
OUT
V-
Vs
emg.txt
U11
4
-
5
0V
0
VE E
1
MA X4124 EUK
-1.0V
0s
V(Vs:+)
1.0s
V(D1:2)
Time
2.0s
Electromyograph Measurement
Copyright © S.Witthayapradit.2009
“ Low Pass Filter … “
0
R10
AC = 1
DC = 0
VOFF = 0
VA MPL = 0.5
FRE Q = 1k
-10
Vi
6.8K
VDB
C6
4.7u
0
fC 
-20
1
2 R C
0
-30
100mHz
1.0Hz
10Hz
Vdb(R10:2)
Frequency
100Hz
Electromyograph Measurement
Copyright © S.Witthayapradit.2009
“ Low Pass Filter … “
V
V
600mV
R1 0
400mV
6.8K
Vs
emg-rec.txt
0
C6
4.7u
200mV
0
0V
0s
V(R10:1)
1.0s
V(R10:2)
Time
2.0s
Electromyograph Measurement
Copyright © S.Witthayapradit.2009
Electrodes
Amplifier
-
BSF
Low pass
Filter
Rectifier
+
Analog
Output
68nF
VE E
VP
2.5Vdc
0
VN
-2.5V dc
0
-
0
+
3
R6
2.2K
VE E
0
D1
D1N4001
OUT
U3
4
OUT
MA X4124 EUK
0
3
5
1
VCC
U11
4
-
5
2
68nF
V+
C2
180K
+
2
4
5
C1
180K
VCC
VCC
R4
23.5K
0
1u
R7
180K
R5
1k
0
R9
VE E
VE E
0
MA X4124 EUK
47K
C3
136nF
INA128
R8
V+
47K
+
V-
+
OUT
3
2
GS 1
GS 2 +
OUT
R3
6
C4
1
V-
R2
RE F
3
-
-
V-
7
1
8
V+
2
V-
V1
1Va c
0Vd c
R1
50
U2
4
U1
V+
VCC
5
VCC
VE E
R10
OUT
1
MA X4124 EUK
6.8K
C6
4.7u
0
Electromyograph Measurement
Electrodes
Copyright © S.Witthayapradit.2009
Amplifier
-
BSF
Rectifier
+
INPUT # 1
ADC
INPUT # 2
ADC
INPUT # N
ADC
Low pass
Filter
Analog
Output
Equipment # 1
MCU
Equipment # 2
Equipment # N
Electromyograph Measurement
Electrodes
Copyright © S.Witthayapradit.2009
Amplifier
-
BSF
+
INPUT # 1
Level
Detector
Toggle
Switch
INPUT # 2
Level
Detector
Toggle
Switch
INPUT # N
Level
Detector
Toggle
Switch
Rectifier
Low pass
Filter
Analog
Output
Electromyogram Project : PSU
Copyright © S.Witthayapradit.2009
Source : http://saturn.ee.psu.ac.th/~beatlab/
Report of EECON-32 Accept
Copyright © S.Witthayapradit.2009
Reference
Copyright © S.Witthayapradit.2009
[1] Sergio Franco , “Design with Operational Amplifiers and
Analog Integrated Circuits” , Third edition , McGraw-Hill , 2002.
[2] James W.Nilsson , Susan A.Riedel , “Electric Circuits” , 8th
Edition , Prentice Hall , 2008.
[3] Thomas L.Floyd , “Electronic Devices” , 7th Edition , Prentice
Hall Inc. , 2005.
[4] Inhyuk Moon, Myungjoon Lee, Junuk Chu, and Museong Mun ,
“Wearable EMG-based HCI for Electric-Powered Wheelchair
Users with Motor Disabilities” , Proceedings of the 2005 IEEE
International Conference on Robotics and Automation Barcelona,
Spain, April 2005
Rev.13.01
Electromyogram ; EMG
Surface Electromyogram ; sEMG
The End
Q&A