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Piezohans
200Hz ~ 600Hz Lae Frekwensie Transducer Onderwater Akoestiese Transducer
1. Meting inhoud:
1.1.1. Geleiding en kapasitansie kurwes
Meet die transduktansie- en kapasitansiekrommes.
1.2. Stuur spanningsreaksie en klankbronvlak
Meet die spanningsreaksie en klankbronvlak wat deur die omskakelaar gestuur word. Die meetfrekwensieband is 200Hz ~ 600Hz. Die reaksie by die resonante frekwensie is nie minder nie as 125dB en die klankbronvlak is nie minder nie as 180dB.
1.3. Hidrostatiese druk: 0.5MPa.
2. Meetdata
Nadat die transducer die 0.5MPa/0.25h, 0MPa/0.25h, 0.5MPa/0.25h, 0MPa/0.25h hidrostatiese druktoets geslaag het, is die isolasieweerstand tussen die kerndrade van die transducer groter as 200MΩ. Die akoestiese prestasie gemeet na die hidrostatiese toets is soos volg.
2.2.1. Geleiding en kapasitansie kurwes
1.1. Oordragspanningsreaksie en klankbronvlak
01# |
||||||
f/kHz |
d/m |
U stuur /V |
U ontvang/mv |
M0/dB |
SvL/dB |
SL/dB |
200 |
1 |
1560 |
10 |
-206.5 |
102.6 |
157.5 |
250 |
1 |
1550 |
20 |
-206.5 |
108.7 |
163.5 |
300 |
1 |
1618 |
50 |
-206.5 |
116.3 |
171.4 |
350 |
1 |
1734 |
120 |
-206.5 |
123.3 |
179.0 |
400 |
1 |
1910 |
260 |
-206.5 |
129.2 |
185.8 |
450 |
1 |
1862 |
150 |
-206.5 |
124.6 |
181.0 |
500 |
1 |
1850 |
110 |
-206.5 |
122.0 |
178.3 |
550 |
1 |
2098 |
100 |
-206.5 |
120.1 |
177.5 |
600 |
1 |
2176 |
80 |
-206.5 |
117.8 |
175.5 |
02# |
||||||
f/kHz |
d/m |
U stuur /V |
U ontvang/mv |
M0/dB |
SvL/dB |
SL/dB |
200 |
1 |
1606 |
10 |
-206.5 |
102.4 |
157.5 |
250 |
1 |
1130 |
20 |
-206.5 |
111.5 |
163.5 |
300 |
1 |
1526 |
50 |
-206.5 |
116.8 |
171.4 |
350 |
1 |
1362 |
120 |
-206.5 |
125.4 |
179.0 |
400 |
1 |
1916 |
210 |
-206.5 |
127.3 |
183.9 |
450 |
1 |
2066 |
130 |
-206.5 |
122.5 |
179.7 |
500 |
1 |
2086 |
90 |
-206.5 |
119.2 |
176.5 |
550 |
1 |
1946 |
70 |
-206.5 |
117.6 |
174.4 |
600 |
1 |
1722 |
60 |
-206.5 |
117.3 |
173.0 |
