TWI695981B - Underwater ultrasonic device - Google Patents

Abstract

An underwater ultrasonic device includes a curvilinear ultrasound transducer and a plurality of straight linear ultrasound transducers. The straight linear ultrasound transducers are disposed with respect to the curvilinear ultrasound transducer. A first angle is included between the straight linear ultrasound transducers. One of the curvilinear ultrasound transducer and the straight linear ultrasound transducer is configured to transmit a plurality of ultrasound signals. Another one of the curvilinear ultrasound transducer and the straight linear ultrasound transducer is configured to receive a plurality of reflected signals of the ultrasound signals.

Description

Underwater ultrasonic device

The invention relates to an underwater ultrasonic device, in particular to an underwater ultrasonic device which can effectively expand the measurement range.

Ultrasonic wave has the characteristics of not destroying the material structure and not harming the organism, so it is widely used in underwater measurement. The conventional underwater ultrasonic device used in the wide-angle measurement range is composed of a plurality of ultrasonic transducers, and each ultrasonic transducer independently transmits and receives ultrasonic waves. In other words, the conventional underwater ultrasonic device is composed of a plurality of ultrasonic transducer measurement ranges to form a wide-angle measurement range. However, when a plurality of ultrasonic transducers are spliced together, a large amount of measurement dead angle will be generated between the plurality of ultrasonic transducers, which will affect the accuracy of the measurement results.

One of the objects of the present invention is to provide an underwater ultrasonic device that can effectively expand the measurement range to solve the above problems.

According to an embodiment, the underwater ultrasonic device of the present invention includes an arc-shaped ultrasonic transducer and a plurality of linear ultrasonic transducers. A plurality of linear ultrasonic transducers are arranged relative to the arc-shaped ultrasonic transducers. There is a first angle between a plurality of linear ultrasonic transducers. One of the arc-shaped ultrasonic transducer and the linear ultrasonic transducer is used to transmit a plurality of ultrasonic signals. The other one of the arc-shaped ultrasonic transducer and the linear-shaped ultrasonic transducer is used to receive a plurality of reflected signals of a plurality of ultrasonic signals.

According to another embodiment, the underwater ultrasonic device of the present invention includes an ultrasonic transducer, a first linear ultrasonic transducer and a second linear ultrasonic transducer. The ultrasonic transducer is used to transmit a plurality of ultrasonic signals. A second angle between the second linear ultrasonic transducer and the first linear ultrasonic transducer is disposed on a first side of the ultrasonic transducer. The first linear ultrasonic transducer and the second linear ultrasonic transducer are respectively used to receive a plurality of reflected signals of a part of the plurality of ultrasonic signals.

To sum up, the present invention can transform the measurement range (for example, the transmission range or the reception range) of an ultrasonic transducer (for example, an arc-shaped ultrasonic transducer) and a plurality of linear ultrasonic transducers The measuring ranges (for example, receiving range or transmitting range) of the device overlap to form a wide-angle measuring range. In addition, if the target object moves, the present invention can change the displacement between the ultrasonic transducers so that the measurement range changes with the movement of the target object, thereby achieving the effect of tracking the target object.

The advantages and spirit of the present invention can be further understood through the following detailed description of the invention and the accompanying drawings.

Please refer to FIGS. 1 to 4, FIG. 1 is a perspective view of an underwater ultrasonic device 1 according to an embodiment of the present invention, and FIG. 2 is a perspective view of the underwater ultrasonic device 1 in FIG. 1 from another perspective A perspective view, FIG. 3 is a schematic diagram of the underwater ultrasonic device 1 in FIG. 1 forming a wide-angle measurement range, and FIG. 4 is a schematic diagram of the underwater ultrasonic device 1 in FIG. 2 forming a wide-angle measurement range.

As shown in FIGS. 1 and 2, the underwater ultrasonic device 1 includes an arc-shaped ultrasonic transducer 10 and a plurality of linear ultrasonic transducers 12a, 12b, 12c, and 12d, of which a plurality of linear The ultrasonic transducers 12a, 12b, 12c, and 12d are disposed relative to the arc-shaped ultrasonic transducer 10, and a plurality of linear ultrasonic transducers 12a, 12b, 12c, and 12d sandwich a first angle θ1. It should be noted that the phased array ultrasonic transducer also belongs to the linear ultrasonic transducer described in the present invention. In addition, the arc-shaped ultrasonic transducer 10 can also be replaced with other shapes of ultrasonic transducers, depending on the actual application.

In this embodiment, the plurality of linear ultrasonic transducers 12a, 12b, 12c, 12d may include a first linear ultrasonic transducer 12a, a second linear ultrasonic transducer 12b, a first Three linear ultrasonic transducers 12c and a fourth linear ultrasonic transducer 12d. The second linear ultrasonic transducer 12b and the first linear ultrasonic transducer 12a may be stacked on each other on the first side S1 of one of the arc-shaped ultrasonic transducers 10, and the fourth linear ultrasonic transducer The transducer 12d and the third linear ultrasonic transducer 12c may be stacked on each other on a second side S2 of one of the arc-shaped ultrasonic transducers 10, wherein the second side S2 is opposite to the first side S1. In other words, the linear ultrasonic transducers 12a, 12b, 12c, and 12d may be provided in pairs on opposite sides of the arc-shaped ultrasonic transducer 10.

As shown in FIG. 1, the first linear ultrasonic transducer 12a and the second linear ultrasonic transducer 12b are sandwiched by a first angle θ1, so that the second linear ultrasonic transducer 12b and the first linear ultrasonic transducer 12b The linear ultrasonic transducers 12a are stacked on each other in an X shape. As shown in FIG. 2, the third linear ultrasonic transducer 12c and the fourth linear ultrasonic transducer 12d also sandwich a first angle θ1, so that the fourth linear ultrasonic transducer 12d and the first The three linear ultrasonic transducers 12c are also stacked on each other in an X shape.

In this embodiment, one of the arc-shaped ultrasonic transducer and the linear ultrasonic transducer can be used to transmit a plurality of ultrasonic signals, and the arc-shaped ultrasonic transducer and the linear ultrasonic transducer The other one can be used to receive a plurality of reflected signals of a plurality of ultrasonic signals. For example, in one embodiment, the arc-shaped ultrasonic transducer 10 can be used to transmit a plurality of ultrasonic signals, and each linear ultrasonic transducer 12a, 12b, 12c, 12d can be used to receive a plurality of ultrasonic signals A plurality of reflected signals of ultrasonic signals. Therefore, the present invention can form a wide-angle measurement range by overlapping the emission range of the arc-shaped ultrasonic transducer 10 with the reception range of a plurality of linear ultrasonic transducers 12a, 12b, 12c, and 12d. In the embodiment, the length of each linear ultrasonic transducer is about the same as the half-length of the arc-shaped ultrasonic transducer 10, which can increase the resolution of the receiving area corresponding to the linear ultrasonic transducer and can be interpreted. The pattern is clearer. In another embodiment, each linear ultrasonic transducer 12a, 12b, 12c, 12d can be used to transmit a plurality of ultrasonic signals, and the arc-shaped ultrasonic transducer 10 can be used to receive a plurality of ultrasonic signals Plural reflection signals. Therefore, the present invention can form a wide-angle measurement range by overlapping the reception range of the arc-shaped ultrasonic transducer 10 with the transmission range of a plurality of linear ultrasonic transducers 12a, 12b, 12c, and 12d.

As shown in FIGS. 3 and 4, the measurement range R of the arc-shaped ultrasonic transducer 10 has an ultrasonic coverage angle α, and the measurement range R1 of the first linear-shaped ultrasonic transducer 12a has an ultrasonic The sound wave coverage angle α1, the measurement range R2 of the second linear ultrasonic transducer 12b has an ultrasound coverage angle α2, and the measurement range R3 of the third linear ultrasonic transducer 12c has an ultrasound coverage angle α3 And, the measurement range R4 of the fourth linear ultrasonic transducer 12d has an ultrasonic coverage angle α4. It should be noted that when the measuring range R is the transmitting range, the measuring ranges R1, R2, R3, R4 are the receiving ranges; conversely, when the measuring range R is the receiving range, the measuring ranges R1, R2, R3 , R4 series is the launch range. For example, the ultrasonic coverage angle α of the arc-shaped ultrasonic transducer 10 may be 120 degrees, and the ultrasonic coverage angles of each linear ultrasonic transducer 12a, 12b, 12c, 12d cover the angle α1, α2, α3 , Α4 can be 30 degrees. At this time, the present invention can make the measurement range R of the arc-shaped ultrasonic transducer 10 and the measurement ranges R1, R2, R3, R4 of the plurality of linear ultrasonic transducers 12a, 12b, 12c, 12d Overlap to form a 120-degree wide-angle measurement range.

In this embodiment, the first angle θ1 and the ultrasonic coverage angles α1, α2, α3, and α4 have a multiple relationship. In addition, a second angle θ2 is included between the first linear ultrasonic transducer 12a and the third linear ultrasonic transducer 12c, wherein the first angle θ1 and the second angle θ2 are also in a multiple relationship. For example, each ultrasonic coverage angle α1, α2, α3, α4 may be 30 degrees, the first angle θ1 may be 60 degrees, and the second angle θ2 may be 30 degrees, so that the linear ultrasonic transducer 12a , 12b, 12c, 12d measurement ranges R1, R2, R3, R4 present a staggered arrangement as shown in Figure 3 and Figure 4, and then cooperate with the measurement range R of the arc-shaped ultrasonic transducer 10 to form 120 Wide-angle measurement range of degrees.

In another embodiment, the underwater ultrasonic device 1 of the present invention may further include a displacement mechanism (not shown in the figure), coupled to the arc-shaped ultrasonic transducer 10 and/or the linear ultrasonic transducer The transducers 12a, 12b, 12c, 12d can be adjusted so that the displacement between the arc-shaped ultrasonic transducer 10 and the linear ultrasonic transducer 12a, 12b, 12c, 12d can be changed. When the displacement changes, the overlapping range between the measurement range R of the arc-shaped ultrasonic transducer 10 and the measurement ranges R1, R2, R3, R4 of the linear ultrasonic transducers 12a, 12b, 12c, 12d will be Change accordingly. Therefore, if the target object moves, the present invention can change the displacement between the arc-shaped ultrasonic transducer 10 and the linear ultrasonic transducer 12a, 12b, 12c, 12d, so that the measurement range follows the target Changes to achieve the effect of tracking the target. It should be noted that the above-mentioned displacement mechanism may be a moving mechanism, a rotating mechanism, or a combination thereof, depending on the actual application.

In another embodiment, the present invention can also arrange a plurality of linear ultrasonic transducers to be stacked on each other on the same side of the arc-shaped ultrasonic transducer 10. For example, in the present invention, the linear ultrasonic transducers 12a, 12b may be stacked on the first side S1 of the arc-shaped ultrasonic transducer 10, and the linear ultrasonic transducers 12c, 12d may be The first side S2 of the arc-shaped ultrasonic transducer 10 is removed to meet the requirements of different measurement ranges.

In another embodiment, the present invention can also arrange linear ultrasonic transducers 12a, 12c on opposite sides of the arc-shaped ultrasonic transducer, and move the linear ultrasonic transducers 12b, 12d In addition, to meet the needs of different measurement ranges.

Please refer to FIG. 5 and FIG. 6, FIG. 5 is a perspective view of an underwater ultrasonic device 1 according to another embodiment of the invention, and FIG. 6 is a wide-angle measurement of the underwater ultrasonic device 1 in FIG. 5 Schematic diagram of the scope. In this embodiment, each ultrasonic coverage angle α1, α2, α3, α4 may be 30 degrees, the first angle θ1 may be 30 degrees, and the second angle θ2 may be 60 degrees, as shown in FIG. 5. Therefore, the measurement ranges R1, R2, R3, and R4 of the linear ultrasonic transducers 12a, 12b, 12c, and 12d can be arranged in order as shown in FIG. The measurement range R cooperates to form a 120-degree wide-angle measurement range.

Please refer to FIG. 7, which is a perspective view of an arc-shaped ultrasonic transducer 10 ′ according to another embodiment of the present invention. The main difference between the arc-shaped ultrasonic transducer 10' and the arc-shaped ultrasonic transducer 10 described above is that the arc-shaped ultrasonic transducer 10' includes a plurality of transducer layers 100a, 100b, and a plurality of The transducer layers 100a, 100b are side by side along a short axis direction D, as shown in FIG. In this embodiment, the arc-shaped ultrasonic transducer 10 may be a flat shape with an arc-shaped leading edge 102, wherein the arc-shaped leading edge 102 may be provided with a plurality of transmitting units to form a plurality of transducer layers 100a , 100b. In practical applications, the emitting unit may be a piezoelectric element. The plurality of transducer layers 100a, 100b can increase the ultrasonic emission intensity without increasing the voltage by circuit design.

Please refer to FIG. 8 and FIG. 9, FIG. 8 is a perspective view of an underwater ultrasonic device 1 ′ according to another embodiment of the present invention, and FIG. 9 is an underwater ultrasonic device 1 ′ in FIG. 8 forming a wide angle Schematic diagram of the measurement range. The main difference between the underwater ultrasonic device 1'and the above-mentioned underwater ultrasonic device 1 is that a plurality of linear ultrasonic transducers 12a, 12b, 12c, 12d of the underwater ultrasonic device 1'are head and tail The connection ground is provided on the same side of the arc-shaped ultrasonic transducer 10, as shown in Figs. 8 and 9. In this embodiment, a first angle θ1 is interposed between the first linear ultrasonic transducer 12a and the second linear ultrasonic transducer 12b, and the second linear ultrasonic transducer 12b and the third linear A first angle θ1 is sandwiched between the ultrasonic transducer 12c, and a first angle θ1 is sandwiched between the third linear ultrasonic transducer 12c and the fourth linear ultrasonic transducer 12d, so that a plurality of linear ultrasonic transducers The sonic transducers 12a, 12b, 12c, and 12d are connected head to tail along one arc surface of the arc-shaped ultrasonic transducer 10. In this embodiment, each ultrasound coverage angle α1, α2, α3, α4 may be 30 degrees, and the first angle θ1 may be 30 degrees, as shown in FIG. 8. Therefore, the measurement ranges R1, R2, R3, and R4 of the linear ultrasonic transducers 12a, 12b, 12c, and 12d can be arranged in order as shown in FIG. 9, and then the arc-shaped ultrasonic transducers 10 The measurement range R cooperates to form a 120-degree wide-angle measurement range. When the linear ultrasonic transducers 12a, 12b, 12c, and 12d are used to receive a plurality of reflected signals of a plurality of ultrasonic signals, the receiving range of the linear ultrasonic transducers 12a, 12b, 12c, and 12d includes a plurality of The range of multiple reflection signals of ultrasonic signals.

Therefore, according to the above-mentioned underwater ultrasonic devices 1, 1', the present invention can selectively arrange linear ultrasonic transducers 12a, 12b, 12c, 12d on top of each other on the arc-shaped ultrasonic transducer 10 Opposite sides, or linear ultrasonic transducers 12a, 12b, 12c, and 12d are arranged on the same side of the arc-shaped ultrasonic transducer 10 head to tail.

To sum up, the present invention can transform the measurement range (for example, the transmission range or the reception range) of an ultrasonic transducer (for example, an arc-shaped ultrasonic transducer) and a plurality of linear ultrasonic transducers The measuring ranges (for example, receiving range or transmitting range) of the device overlap to form a wide-angle measuring range. In addition, if the target object moves, the present invention can change the displacement between the ultrasonic transducers so that the measurement range changes with the movement of the target object, thereby achieving the effect of tracking the target object. The above are only the preferred embodiments of the present invention, and all changes and modifications made in accordance with the scope of the patent application of the present invention shall fall within the scope of the present invention.

1, 1': underwater ultrasonic device 10, 10': curved ultrasonic transducer 12a, 12b, 12c, 12d: linear ultrasonic transducer 100a, 100b: transducer layer 102: curved leading edge D: short axis direction R, R1, R2, R3, R4: measurement range S1: First side S2: Second side θ1: first angle θ2: second angle α, α1, α2, α3, α4: Ultrasonic coverage angle

FIG. 1 is a perspective view of an underwater ultrasonic device according to an embodiment of the present invention. FIG. 2 is a perspective view of the underwater ultrasonic device in FIG. 1 from another angle of view. FIG. 3 is a schematic diagram of the underwater ultrasonic device in FIG. 1 forming a wide-angle measurement range. FIG. 4 is a schematic diagram of the underwater ultrasonic device in FIG. 2 forming a wide-angle measurement range. Fig. 5 is a perspective view of an underwater ultrasonic device according to another embodiment of the invention FIG. 6 is a schematic diagram of the underwater ultrasonic device in FIG. 5 forming a wide-angle measurement range. FIG. 7 is a perspective view of an arc-shaped ultrasonic transducer according to another embodiment of the present invention. FIG. 8 is a perspective view of an underwater ultrasonic device according to another embodiment of the present invention. FIG. 9 is a schematic diagram of the underwater ultrasonic device in FIG. 8 forming a wide-angle measurement range.

1: underwater ultrasonic device

10: Curved ultrasonic transducer

12a, 12b, 12c, 12d: linear ultrasonic transducer

S1: First side

S2: Second side

θ 1: first angle

θ 2: second angle

Claims (10)

An underwater ultrasonic device, including: An arc-shaped ultrasonic transducer; and A plurality of linear ultrasonic transducers are arranged relative to the arc-shaped ultrasonic transducer, a first angle is sandwiched between the plurality of linear ultrasonic transducers, the arc-shaped ultrasonic transducer and the straight line One of the shaped ultrasonic transducers is used to transmit a plurality of ultrasound signals, and the other of the curved ultrasound transducer and the linear ultrasound transducer is used to receive the plurality of ultrasound signals Plural reflection signals. The underwater ultrasonic device according to claim 1, wherein the linear ultrasonic transducer has an ultrasonic coverage angle, and the first angle and the ultrasonic coverage angle are in a multiple relationship. The underwater ultrasonic device according to claim 1, wherein the plurality of linear ultrasonic transducers are arranged head-to-tail on the same side of the arc-shaped ultrasonic transducer. The underwater ultrasonic device according to claim 3, wherein the plurality of linear ultrasonic transducers are connected head-to-tail along one arc surface of the arc-shaped ultrasonic transducer. The underwater ultrasonic device according to claim 1, wherein the plurality of linear ultrasonic transducers include: A first linear ultrasonic transducer; A second linear ultrasonic transducer, and the first linear ultrasonic transducer are stacked on each other on the first side of the arc-shaped ultrasonic transducer; A third linear ultrasonic transducer; and A fourth linear ultrasonic transducer, and the third linear ultrasonic transducer are stacked on each other on a second side of the arc-shaped ultrasonic transducer, the second side and the first side relatively. The underwater ultrasonic device according to claim 5, wherein the second linear ultrasonic transducer and the first linear ultrasonic transducer are stacked in an X shape with each other, and the fourth linear ultrasonic transducer The transducer and the third linear ultrasonic transducer are stacked on each other in an X shape. The underwater ultrasonic device according to claim 1, wherein the arc-shaped ultrasonic transducer includes a plurality of transducer layers, and the plurality of transducer layers are side by side along a short axis direction. An underwater ultrasonic device, including: An ultrasonic transducer for transmitting multiple ultrasonic signals; A first linear ultrasonic transducer; and A second linear ultrasonic transducer is disposed at a first angle between the first linear ultrasonic transducer and a first angle of the ultrasonic transducer, the first linear ultrasonic transducer The transducer and the second linear ultrasonic transducer are respectively used to receive a plurality of reflected signals of part of the plurality of ultrasonic signals. The underwater ultrasonic device according to claim 8, wherein the first linear ultrasonic transducer and the second linear ultrasonic transducer are arranged on the same side of the ultrasonic transducer head to tail . The underwater ultrasonic device as described in claim 9 further includes: A third linear ultrasonic transducer; and A fourth linear ultrasonic transducer, the first linear ultrasonic transducer, the second linear ultrasonic transducer, the third linear ultrasonic transducer and the fourth linear ultrasonic transducer The ultrasonic transducers are connected head to tail on the same side of the ultrasonic transducer. The receiving range of the linear ultrasonic transducers includes the range of the plural reflected signals of the plural ultrasonic signals.

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