TWI806027B - Underwater ultrasonic device - Google Patents

Abstract

An underwater ultrasonic device is provided. The underwater ultrasonic device comprises a body and an ultrasonic transducer. The ultrasonic transducer has a curved interface having a first side and an adjacent second side for transmitting and receiving a plurality of ultrasonic signals, and the first side has a first curve and a second side has a second curve; wherein the first curve and the second curve has different curvatures. Therefore, the underwater ultrasonic device can achieve the purpose of underwater wide-angle measurement, and can increase the sensitivity and launch ability by the ultrasonic transducer

Description

underwater ultrasonic device

The invention relates to an underwater ultrasonic device, in particular, an underwater ultrasonic device with a curvature radian to achieve underwater wide-angle measurement.

In order to achieve wide-angle imaging, traditional underwater ultrasonic transducers often need to use multiple sets of ultrasonic transducers, or use multiple ultrasonic transducers to splicing together. However, when the splicing method is used, a large number of signal dead spots will be generated and detection cannot be performed. In addition, since the transducer is generally long, the direction of its narrow side also requires a wide-angle design, so the size of the transducer's edge is limited.

Specifically, the ultrasonic transducer has twice the wavelength width to form a 30-degree diffusion angle, and the diffusion angle can increase the detection range in water. However, due to wave transmission, the size of the ultrasonic transducer is limited by the wavelength multiple, and the larger the wavelength, the smaller the spread angle. Conversely, when the size of the transducer is smaller, the diffusion angle is larger, which has the disadvantage that the transducer needs to be driven at a higher voltage, and the acceptance ability becomes worse.

Therefore, the present invention proposes an underwater ultrasonic device, which mainly uses a transducer with a double-curvature arc surface to achieve the purpose of underwater wide-angle measurement, and can increase sensitivity and emission capability.

One aspect of the present invention provides an underwater ultrasonic device. The underwater ultrasonic device includes an ultrasonic transducer and a body. The ultrasonic transducer is arranged on the body. The ultrasonic transducer has a curved interface for transmitting or receiving a plurality of ultrasonic signals. The curved interface has a first side and an adjacent second side. One side has a first curve, and the second side has a second curve; wherein, the curvatures of the first curve and the second curve are different.

Another aspect of the present invention provides an underwater ultrasonic device. The underwater ultrasonic device includes an ultrasonic transducer and a body. The ultrasonic transducer is arranged on the body. The ultrasonic transducer has a curved interface for transmitting or receiving a plurality of ultrasonic signals. The first side of the curved interface and the first virtual section have a first boundary line, and the arc The second side of the curved interface and the second virtual section have a second boundary line, and the first side is adjacent to the second side; wherein at least one of the first boundary line and the second boundary line is a curve.

In order to further understand the features and technical content of the present invention, please refer to the following detailed description and drawings related to the present invention. However, the provided drawings are only for reference and description, and are not intended to limit the present invention.

1: Ultrasonic transducer

2: Ontology

11: First side

12: Second side

11a: Curve

12a: Curve

L1: long side

D1: short side

S: curved interface

Vs1: Virtual section

Vs2: Virtual section

Ve: Ultrasonic signal

3: Ultrasonic transducer

4: Ontology

31: First side

32: second side

31a: First Junction Line

32a: Second junction line

Figure 1A shows the connection diagram of the ultrasonic transducer and the body.

Figure 1B shows the separation of the ultrasonic transducer and the body.

Figure 2A shows a perspective view of an ultrasonic transducer.

Figure 2B shows a top view of the ultrasonic transducer.

Figure 2C shows a side view of an ultrasonic transducer.

Fig. 3A shows the connection diagram of the ultrasonic transducer and the body.

Figure 3B shows the separation of the ultrasonic transducer and the body.

Fig. 3C shows the boundary line of the underwater ultrasonic device of the present invention.

1A and 1B show an underwater ultrasonic device according to an embodiment of the present invention. Figure 1A shows the connection diagram of the ultrasonic transducer and the body. Figure 1B shows the separation of the ultrasonic transducer and the body. like As shown in FIG. 1A and FIG. 1B , the underwater ultrasonic device includes: an ultrasonic transducer 1 and a body 2 . Preferably, the body 2 has a support surface 21, and the ultrasonic transducer 1 is arranged on the support surface 21, and transmits and receives signals on the side opposite to the support surface 21, wherein the support surface can be a plane or an arc noodle. The ultrasonic transducer 1 has a curved interface S, which is located on the side opposite to the main body 2, for transmitting or receiving a plurality of ultrasonic signals Ve. Specifically, in this embodiment, the curved interface S is all or at least part of the surface of the ultrasonic transducer 1 facing opposite to the main body 2 . When the emitted ultrasonic signal Ve touches an obstacle, multiple reflected ultrasonic signals will be generated. The body 2 may include detection or other signal processing circuits for receiving and processing the ultrasonic signal Ve received by the ultrasonic transducer 1 .

As shown in FIG. 1B , the inner surface of the ultrasonic transducer 1 is used for connecting with the main body 2 , and the curved interface S is used for receiving or emitting the ultrasonic signal Ve. In this embodiment, the curved interface S can be regarded as a convex curved surface formed by bending the long side and the short side of a long rectangle into curved sides respectively. As shown in Figure 1B, the first side 11 of the curved interface S can be a long side, and the first side 11 includes a first curve 11a, the second side 12 adjacent to the first side can be a short side, and the second side 12 includes a second curve 12a, the first curve 11a and the second curve 12a intersect, and the curvature of the first curve 11a is different from the curvature of the second curve 12a, for example, the curvature of the first curve 11a can be greater than the curvature of the second curve 12a. As shown in FIG. 1B , in this embodiment, the first curve 11a is a curve extending along the long arc side of the curved interface S, and the second curve 12a is a curve extending along the short arc side of the curved interface S. In addition, the main body 2 has intersecting long side L ₁ and short side D ₁ , the first curve 11 a bends along the long side L ₁ , and the second curve 12 a bends along the short side D ₁ . Secondly, the width of the ultrasonic transducer 1 may be smaller than or equal to the width of the short side _D1 of the body 2 . In this embodiment, the first curve 11a is the long axis of the ultrasonic transducer 1, and the second curve 12a is the short axis of the ultrasonic transducer, therefore, the ultrasonic transducer uses the first curve and the second curve The long and short axis design with double curvature, or, in another embodiment, a multi-curvature design can also be used to amplify the measurement of ultrasonic signals in a large angle range.

Fig. 2A shows a perspective view of the ultrasonic transducer, Fig. 2B shows a top view of the ultrasonic transducer, and Fig. 2C shows a side view of the ultrasonic transducer. As shown in FIGS. 2B and 2C , the underwater ultrasonic device has different curvatures in different sections and tangents. As shown in Figure 2B, the first curve 11a is the boundary line between the curved interface S and the first virtual cross-section _Vs1 , and the central angle corresponding to the first curve 11a is an acute angle, and the first curve 11a has complex numbers on the curve. curvature. In this embodiment, the beam angle of the first curve 11a is preferably between 115 degrees and 125 degrees, but it is not limited thereto. As shown in Figure 2C, the second curve 12a is the boundary line between the curved interface S and the second virtual cross-section _Vs2 , the central angle corresponding to the second curve 12a is an acute angle, and the second curve 12a has different complex numbers on the curve. curvature. In this embodiment, the optimal central angle corresponding to the second curve 12a is 15 degrees. It can be seen from Figures 2B and 2C that the first virtual section Vs ₁ is perpendicular to the second virtual section Vs ₂ , and the average curvatures of the first curve 11a and the second curve 12a are different, and the curvature of the second curve 12a is greater than that of the first curve 11a curvature.

3A and 3B show an underwater ultrasonic device according to another embodiment of the present invention. Fig. 3A shows the connection diagram of the ultrasonic transducer and the body. Figure 3B shows the separation of the ultrasonic transducer and the body. Fig. 3C shows the boundary line of the underwater ultrasonic device of the present invention. As shown in FIG. 3A and FIG. 3B , the underwater ultrasonic device includes: an ultrasonic transducer 3 and a body 4 , and the body 4 is connected to the ultrasonic transducer 3 . The body 3 has a support surface, and the ultrasonic transducer is arranged on the support surface of the body 4, and transmits and receives signals on the side opposite to the support surface, wherein the support surface can be a plane or an arc surface. The ultrasonic transducer 3 has a curved interface S, which is located on the side opposite to the main body 4, for transmitting or receiving a plurality of ultrasonic signals Ve. When the emitted ultrasonic signal Ve touches an obstacle, multiple reflected ultrasonic signals will be generated. The main body 4 can be a strip-shaped object, and the main body 4 can include a detection or other signal processing circuit for receiving and processing the ultrasonic signal Ve received by the ultrasonic transducer 3 . The linear ultrasonic transducer in this embodiment is a phased array ultrasonic transducer.

As shown in FIG. 3B , one side of the curved interface S is used to connect with the main body 4 , and the other side is used to receive or transmit the ultrasonic signal Ve. The curved interface S has a first boundary line 31a and a second boundary line 32a, the first boundary line 31a and the second boundary line 32a intersect, and at least one of the first boundary line 31a and the second boundary line 32a is a curve, and There are complex numbers of different curvatures on this curve. In this embodiment, the first boundary line 31a can be a straight line, the second boundary line 32a can be a curve, and the body 4 has intersecting long side L ₁ and short side D ₁ , the first boundary line 31a (straight line) is along the length The side _L1 extends straightly, and the second boundary line (curved line) 32a extends curvedly along the short side _D1 . Secondly, the width of the ultrasonic transducer 3 may be less than or equal to the width of the short side D ₁ of the body 4 , and its length may be less than or equal to the length of the long side L ₁ of the body 4 . In this embodiment, the curve of the ultrasonic transducer adopts the design of straight major axis and curved minor axis, which can improve the sensitivity of the ultrasonic transducer.

Fig. 3C shows the boundary line of the underwater ultrasonic device of the present invention. As shown in Figure 3C, the curved interface S has a first side 31 and a second side 32 adjacent to the first side, the straight line 31a is the first boundary line between the curved interface S and the first virtual section _Vs1 , the curved interface The first side 31 of S and the first virtual section Vs1 have a first boundary line 31a, the curve 32a is the second boundary line between the curved interface S and the second virtual section _Vs2 , and the second side 32 of the curved interface S is connected to the second virtual section Vs2. The two virtual sections Vs2 have a second boundary line 32a. The first virtual section Vs ₁ is perpendicular to the second virtual section Vs ₂ . The dotted lines at both ends of the curve 32a converge and extend backwards and inwards, and will intersect to form an included angle. The intersected included angle is an acute angle, and the optimal angle is 15 degrees.

To sum up, the present invention uses an arc-shaped ultrasonic transducer for transmitting or receiving underwater, which has double or multi-curvature major and minor axis characteristics, and can measure ultrasonic signals in a wide range of angles. In addition, the present invention can also apply a linear ultrasonic transducer designed with a straight major axis and a curved minor axis, which can improve the sensitivity of the ultrasonic transducer.

The content disclosed above is only the preferred feasible embodiment of the present invention, and does not limit the patent scope of the present invention. Therefore, all equivalent technical changes made by using the description and drawings of the present invention fall into the application of the present invention. within the scope of the patent.

1: Ultrasonic transducer

2: Ontology

11: First side

12: Second side

11a: Curve

12a: Curve

L1: long side

D1: short side

S: curved interface

Vs1: Virtual section

Vs2: Virtual section

Ve: Ultrasonic signal

Claims (10)

An underwater ultrasonic device, comprising: a body with a support surface; and an ultrasonic transducer arranged on the body and attached to the support surface, the ultrasonic transducer has a curved interface for To transmit or receive a plurality of ultrasonic signals, the curved interface has a first side and an adjacent second side, the first side has a first curve, and the second side has a second curve, wherein, The first curve is a curve extending along the long arc side of the curved interface, and the second curve is a curve extending along the short arc side of the curved interface, wherein the curvature of the first curve and the second curve are different . The underwater ultrasonic device as claimed in claim 1, wherein the first curve is the junction of the curved interface and a first virtual section, and the second curve is the junction of the curved interface and a second virtual section, The first virtual section is perpendicular to the second virtual section. The underwater ultrasonic device as claimed in claim 1, wherein the underwater ultrasonic device has a long side and a short side intersecting, the first curve extends along the long side, and the second curve extends along the short side , wherein the curvature of the second curve is greater than the curvature of the first curve. The underwater ultrasonic device as claimed in claim 1, wherein the first curve or the second curve has a plurality of different curvatures. According to the underwater ultrasonic device described in claim 1, the average curvature of the first curve and the second curve is different. The underwater ultrasonic device according to claim 1, wherein the beam angle of the first curve is between 115 degrees and 125 degrees. An underwater ultrasonic device, comprising: a body having a supporting surface; and An ultrasonic transducer is arranged on the body and attached to the supporting surface. The ultrasonic transducer has a curved interface for transmitting or receiving a plurality of ultrasonic signals. A first side of the curved interface is connected to the A first virtual section has a first boundary line and a second side of the curved interface has a second boundary line with a second virtual section, the first side is adjacent to the second side; wherein, the first At least one of the first boundary line and the second boundary line is a curve, wherein the curve is a curve extending along an arc edge of the curved interface. The underwater ultrasonic device according to claim 7, wherein the underwater ultrasonic device has a long side and a short side intersecting, the first boundary line extends along the long side, and the second boundary line extends along the short side The side extends, wherein the second side is the short side, and the second boundary line is a curved line. The underwater ultrasonic device according to claim 7, wherein the first virtual section is perpendicular to the second virtual section. The underwater ultrasonic device as claimed in claim 7, wherein the curve has a plurality of different curvatures.

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