IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0661130
(2010-03-11)
|
등록번호 |
US-8537640
(2013-09-17)
|
우선권정보 |
CN-2009 1 0190416 (2009-09-11) |
발명자
/ 주소 |
- Jiang, Kai-Li
- Liu, Liang
- Feng, Chen
- Qian, Li
- Fan, Shou-Shan
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
31 |
초록
▼
An active sonar system includes at least one transmitter to transmit an acoustic signal, at least one receiver to receive a reflected acoustic signal, and an electronic cabinet to control the at least one transmitter to transmit the acoustic signal and the receiver to receive the reflected acoustic
An active sonar system includes at least one transmitter to transmit an acoustic signal, at least one receiver to receive a reflected acoustic signal, and an electronic cabinet to control the at least one transmitter to transmit the acoustic signal and the receiver to receive the reflected acoustic signal. At least one transmitter includes at least one carbon nanotube transmitting transducer. At least one carbon nanotube transmitting transducer includes at least one first electrode, at least one second electrode, and an acoustic element. The acoustic element includes a carbon nanotube structure that is electrically connected to at least one first electrode and at least one second electrode.
대표청구항
▼
1. An active sonar system comprising: at least one transmitter to transmit an acoustic signal, the at least one transmitter comprising at least one carbon nanotube transmitting transducer submerged in a liquid medium, the at least one carbon nanotube transmitting transducer comprising at least one f
1. An active sonar system comprising: at least one transmitter to transmit an acoustic signal, the at least one transmitter comprising at least one carbon nanotube transmitting transducer submerged in a liquid medium, the at least one carbon nanotube transmitting transducer comprising at least one first electrode, at least one second electrode, and a carbon nanotube structure configured to generate sound by heating the liquid medium to cause a pressure oscillation in the liquid medium, the carbon nanotube structure being electrically connected to the at least one first electrode and the at least one second electrode;at least one receiver to receive a reflected acoustic signal; andan electronic cabinet to control the at least one transmitter to transmit the acoustic signal and the at least one receiver to receive the reflected acoustic signal. 2. The active sonar system of claim 1, wherein the carbon nanotube structure is a freestanding structure. 3. The active sonar system of claim 1, wherein the carbon nanotube structure is a carbon nanotube film, and a heat capacity per unit area of the carbon nanotube film is less than 2×10−4 J/m2*K. 4. The active sonar system of claim 1, wherein the carbon nanotube structure is a carbon nanotube film structure. 5. The active sonar system of claim 4, wherein the carbon nanotube film structure comprises a plurality of carbon nanotubes substantially oriented along a same direction. 6. The active sonar system of claim 5, wherein the carbon nanotubes of the carbon nanotube film structure are joined end-to-end by Van der Waals attractive force therebetween. 7. The active sonar system of claim 6, wherein the carbon nanotubes of the carbon nanotube film structure extend from the at least one first electrode to the at least one second electrode. 8. The active sonar system of claim 4, wherein the carbon nanotube film structure comprises a plurality of carbon nanotubes entangled with each other. 9. The active sonar system of claim 4, wherein the carbon nanotube film structure comprises a plurality of carbon nanotubes resting upon each other, an angle between an alignment direction of the carbon nanotubes and a surface of the carbon nanotube film structure ranges from about 0 degrees to about 15 degrees. 10. The active sonar system of claim 1, wherein the carbon nanotube structure comprises a single linear carbon nanotube structure folded or winded to form a planar structure. 11. The active sonar system of claim 1, wherein the carbon nanotube structure comprises a plurality of linear carbon nanotube structures paralleled with each other, crossed with each other, or weaved together with each other to form a planar structure. 12. The active sonar system of claim 1, wherein the at least one carbon nanotube transmitting transducer further comprises a supporter; the at least one first electrode, the at least one second electrode, and the acoustic element are located on the supporter. 13. The active sonar system of claim 1, wherein the at least one carbon nanotube transmitting transducer comprises a plurality of first electrodes and a plurality of second electrodes, the first electrodes and the second electrodes are located alternately, the first electrodes are electrically connected to each other in parallel, and the second electrodes are electrically connected to each other in parallel. 14. The active sonar system of claim 13, wherein the first electrodes and the second electrodes are located in different planes; the acoustic element surrounds the first electrodes and the second electrodes to form a three-dimensional structure. 15. The active sonar system of claim 1, wherein the at least one receiver comprises at least one receiving transducer, the at least one receiving transducer being a piezoelectric transducer made of piezoelectric ceramic, a giant magnetostrictive transducer made of rare-earth alloy, or an electrostrictive transducer made of ferroelectric material. 16. The active sonar system of claim 1, further comprising an underwater carrier accommodating the at least one transmitter, the at least one receiver, and the electronic cabinet. 17. An active sonar system comprising: at least one transmitter to transmit an acoustic signal, the at least one transmitter comprising at least one cubic carbon nanotube transmitting transducer submerged in a liquid medium, the at least one cubic carbon nanotube transmitting transducer comprising different surfaces facing different directions, and is configured to transmit the acoustic signals toward different directions simultaneously by heating the liquid medium to cause a pressure oscillation in the liquid medium;at least one receiver to receive a reflected acoustic signal; andan electronic cabinet to control the at least one transmitter to transmit the acoustic signal and the at least one receiver to receive the reflected acoustic signal. 18. The active sonar system of claim 17, wherein the at least one cubic carbon nanotube transmitting transducer comprises at least one first electrode, at least one second electrode, at least one supporter, and an acoustic element comprising a carbon nanotube structure; the at least one first electrode, the at least one second electrode, and the at least one supporter are located in different planes; the acoustic element surrounds the at least one first electrode, the at least one second electrode, and the at least one supporter to form a three-dimensional structure;the acoustic element is electrically connected to the at least one first electrode and the at least one second electrode. 19. An active sonar system comprising: at least one transmitter to transmit an acoustic signal, the at least one transmitter comprising a carbon nanotube transmitting transducer array comprising a plurality of carbon nanotube structures used for transmitting the acoustic signal;at least one receiver to receive a reflected acoustic signal; andan electronic cabinet to control the at least one transmitter to transmit the acoustic signal and the at least one receiver to receive the reflected acoustic signal. 20. The active sonar system of claim 19, wherein the carbon nanotube transmitting transducer array comprises: a substrate;a plurality of first electrode down-leads located on the substrate arranged in parallel;a plurality of second electrode down-leads located on the substrate arranged in parallel, the first electrode down-leads and the second electrode down-leads define a grid, each two adjacent first electrode down-leads and each two adjacent second electrode down-leads of the grid defines a plurality of cells;a plurality of carbon nanotube transmitting transducers, each carbon nanotube transmitting transducer located in each cell, and comprising a first electrode, a second electrode, and an acoustic element comprising one of the plurality of carbon nanotube structures,wherein the first electrode and the second electrode are electrically connected to the acoustic element.
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