Appendix 5 Overall Sensitivity - EDAN Sonotrax Pro User Manual

Appendix 5 Overall Sensitivity

Diameter of Target
Distance
Reflector
(mm)
(d)(mm)
50
75
1.58
A=45.7dB@2MHz
100
200
50
75
2.38
A=43.2dB@2MHz
100
200
Doppler Frequency (Hz)
SONOTRAX(2009) Series Ultrasonic Pocket Doppler User Manual
Two-way Attenuation
B=∑B
∑B (T: ultrasonic attenuation
A(dB)
phantom No. B :dB)
a
T 6# 6# 3#
45.7
B 24.9 24.9 7.7
a
T 6# 6# 2#
45.7
B 24.9 24.9 5.5
a
T 6# 6# 1#
45.7
B 24.9 24.9 3.7
a
T 6# 6#
45.7
B 24.9 24.9
a
T 6# 6# 2#
43.2
B 24.9 24.9 5.5
a
T 6# 6# 3#
43.2
B 24.9 24.9 7.7
a
T 6# 6# 2#
43.2
B 24.9 24.9 5.5
a
T 6# 6# 1#
43.2
B 24.9 24.9 3.7
a
333
+B V
a w
(r.m.s)
B B
w
(dB) (dB)
-
0 57.5 72.15
-
-
0 55.3 70.35
-
-
0 53.5 72.62
-
- -
0 49.8 75.47
- -
1#
0 59.0 72.36
3.7
-
0 57.5 74.31
-
-
0 55.3 75.26
-
-
0 53.5 75.42
-
Velocity of Target
106


V r
V
  
S n s
C 20 log

10
(r.m.s) 
V r
n
mV mV
dB
34.32 6.45
34.83 6.10
35.64 6.30
35.86 6.24
34.38 6.46
34.83 6.58
35.62 6.49
35.83 6.45
(cm/s)
Overall


. m . . s
Sensitivity
 


. m . . s
(S=A(d)+B+C)
dB
109.6
107.1
105.5
101.7
108.6
107.2
104.9
103.2
12.5