CN114285494A - Multi-channel phased array ultrasonic transmitting system - Google Patents
Multi-channel phased array ultrasonic transmitting system Download PDFInfo
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- CN114285494A CN114285494A CN202210007984.0A CN202210007984A CN114285494A CN 114285494 A CN114285494 A CN 114285494A CN 202210007984 A CN202210007984 A CN 202210007984A CN 114285494 A CN114285494 A CN 114285494A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a multi-channel phased array ultrasonic transmitting system, which comprises: an ultrasonic transmitter array including a plurality of ultrasonic transmitters for transmitting ultrasonic waves to a preset area; the control unit is used for acquiring coordinate parameters of a target touch point in a preset area, acquiring environment temperature, correcting the ultrasonic transmission speed according to the environment temperature, calculating phase delay data of each ultrasonic transmitter according to the coordinate parameters, the position parameters of each ultrasonic transmitter and the corrected ultrasonic transmission speed, and generating voltage signals aiming at each ultrasonic transmitter array according to the data; the driving unit is used for amplifying the voltage signal to output a driving signal to the corresponding ultrasonic transmitter through the corresponding channel so as to superpose the ultrasonic waves at the target touch point; and the power supply unit is used for supplying power to the ultrasonic transmitter array, the control unit and the driving unit. The transmitting system can obtain the required ultrasonic wave through a simpler structure.
Description
Technical Field
The invention relates to the technical field of ultrasonic waves, in particular to a multichannel phased array ultrasonic transmitting system.
Background
The basic idea of the ultrasonic phased array technology is that the radar electromagnetic wave phased array technology is adopted, the phased array radar is composed of a plurality of radiating units which are arranged into an array, the radiation direction of electromagnetic waves is adjusted by controlling the amplitude and the phase of each unit in an array antenna, and radar beams which are flexibly and quickly focused and scanned are synthesized in a certain space range. The ultrasonic phased array transducer is an array formed by a plurality of independent ultrasonic transmitter probes, and each ultrasonic transmitter probe is controlled and excited by an electronic system according to a certain rule and a certain time sequence to adjust the position of a control focus and the focusing direction. The ultrasonic phased array technology is mainly applied to the medical field in the initial stage, and a phased array transducer is used for rapidly moving an acoustic beam to image an organ to be detected in medical ultrasonic imaging; the high-power ultrasound utilizes the controllable focusing characteristic to locally heat and treat cancer, so that the temperature of target tissues is raised, and the power absorption of non-target tissues is reduced. In recent years, the ultrasonic phased array technology is also applied to the non-contact touch feedback direction, and has considerable application prospect. The complexity of the system, the complexity of wave propagation in the solid, and the cost of the system all contribute to the application thereof.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the present invention is directed to a multi-channel phased array ultrasonic transmission system to obtain a desired ultrasonic wave with a simpler structure and at a lower cost.
In order to achieve the above object, an embodiment of the present invention provides a multi-channel phased array ultrasonic transmitting system, including: an ultrasonic transmitter array comprising a plurality of ultrasonic transmitters for transmitting ultrasonic waves to a predetermined area; the control unit is used for acquiring coordinate parameters of a target touch point in the preset area, calculating phase delay data of each ultrasonic transmitter according to the coordinate parameters, position parameters of each ultrasonic transmitter and ultrasonic transmission speed, and generating voltage signals of each channel corresponding to each ultrasonic transmitter array according to the phase delay data; the driving unit is used for amplifying each voltage signal to output a driving signal and transmitting each driving signal to the corresponding ultrasonic transmitter through the corresponding channel so as to superpose the ultrasonic waves transmitted by each ultrasonic transmitter on the target touch point; a power supply unit for supplying power to the ultrasonic transmitter array, the control unit and the driving unit; wherein the control unit is further configured to: acquiring an ambient temperature, and correcting the ultrasonic transmission speed according to the ambient temperature; and calculating phase delay data of each ultrasonic transmitter according to the coordinate parameters, the position parameters of each ultrasonic transmitter and the corrected ultrasonic transmission speed.
According to the multichannel phased array ultrasonic transmitting system, the control unit can calculate the phase delay data of each ultrasonic transmitter according to the coordinate parameters of the target touch point and the position parameters of each ultrasonic transmitter, and further generate corresponding voltage signals according to the phase delay data, the driving unit can amplify the voltage signals to obtain driving signals and transmit the driving signals to the corresponding ultrasonic transmitters through corresponding channels, so that the ultrasonic transmitter array transmits ultrasonic waves, and the required ultrasonic waves can be accurately obtained at the target touch point through a simple structure and low cost; and the ultrasonic waves transmitted by the ultrasonic transmitters are superposed at the target touch point, so that the power and the efficiency of the multichannel phased array ultrasonic transmitting system are improved. And the control unit can also correct the sound velocity according to the temperature, so that the accuracy of the multichannel phased array ultrasonic transmitting system is improved, and the required ultrasonic waves are obtained better.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic diagram of the structure of a multi-channel phased array ultrasound transmit system of one embodiment of the present invention;
FIG. 2 is a block diagram of the control unit of one embodiment of the present invention;
FIG. 3 is a block diagram of a drive unit according to an embodiment of the present invention;
FIG. 4 is a flow chart of the operation of a multi-channel phased array ultrasound transmit system of one embodiment of the present invention;
FIG. 5 is a schematic diagram of an exemplary ultrasonic transmitter array of the present invention;
FIG. 6 is a schematic diagram of an ultrasound transmitter array according to another example of the present invention;
fig. 7 is a schematic diagram of the structure of an ultrasonic transmitter array according to yet another example of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The multi-channel phased array ultrasonic transmitting system of the embodiment of the invention is described in detail with reference to the accompanying drawings 1-7 and the specific implementation mode.
Fig. 1 is a schematic structural diagram of a multi-channel phased array ultrasonic transmission system according to an embodiment of the present invention.
As shown in fig. 1, the multi-channel phased array ultrasonic transmission system 1000 includes: the ultrasonic wave transmitter comprises an ultrasonic wave transmitter array 3, a control unit 1, a driving unit 2 and a power supply unit 4.
Specifically, the ultrasonic emitter array 3 includes a plurality of ultrasonic emitters 5, and the ultrasonic emitters 5 are configured to emit ultrasonic waves to a predetermined area; the control unit 1 is configured to obtain a coordinate parameter of a target touch point in a preset area, calculate phase delay data of each ultrasonic transmitter 5 according to the coordinate parameter, a position parameter of each ultrasonic transmitter 5, and an ultrasonic transmission speed, and generate a voltage signal of each channel corresponding to each ultrasonic transmitter array 3 according to the phase delay data; the driving unit 2 is configured to amplify each voltage signal to output a driving signal, and transmit each driving signal to the corresponding ultrasonic transmitter 5 through the corresponding channel, so that the ultrasonic waves transmitted by each ultrasonic transmitter 5 are superimposed at the target touch point; the power supply unit 4 is used to supply power to the ultrasonic transmitter array 3, the control unit 1, and the drive unit 2. The above-described power supply unit 4 can convert an externally input power source such as 220V alternating current into a power source that can supply power to the ultrasonic transmitter array 3, the control unit 1, and the drive unit 2 by DC-DC conversion and linear conversion. The ultrasonic transmitter 5 may be, for example, a piezoelectric wafer, but of course, other possible ultrasonic transmitting devices may be used.
The number of the ultrasonic transmitters 5 in the ultrasonic transmitter array 3 may be determined according to the requirement of the multi-channel phased array ultrasonic transmitting system 1000, such as the size of a preset area where a target touch point is located, the distance between the ultrasonic transmitter array 3 and the preset area, and the like, and the technical indexes of the ultrasonic transmitters 5, such as the resonant frequency, the sound pressure level, the direction angle, and the like. The calculating of the phase delay data of each ultrasonic transmitter 5 by the control unit 1 may include: taking the array surface where the ultrasonic transmitter array 3 is located as a coordinate plane, taking the geometric center of the array surface as a coordinate origin O, taking a group of orthogonal axes which are parallel to the array edge and pass through the origin O on the array surface as an x axis and a y axis, and taking a z axis which is vertical to the array surface and passes through the origin O; and then, a space rectangular coordinate system is established according to the above, the coordinate of the geometric center of each ultrasonic transmitter 5 is obtained according to the arrangement of the ultrasonic transmitters 5 on the array, the space distance between the center of each ultrasonic transmitter 5 and the target touch point can be obtained by combining the coordinate of the target touch point in the space rectangular coordinate system, and the sound velocity is substituted into the space distance, so that the corresponding phase delay data can be obtained. The ultrasonic emitter array 3 is one of a line array, such as shown in fig. 5, a two-dimensional rectangular array, such as shown in fig. 6, and a circular array, such as shown in fig. 7.
Because the single ultrasonic transmitter 5 emits the ultrasonic wave outwards in a form similar to a spherical surface when emitting the ultrasonic wave, and the spherical center of the spherical surface is the geometric center of the ultrasonic generator probe, the control unit 1 can acquire the coordinate parameters of the target touch point in the preset area, the position parameters of each ultrasonic transmitter 5 and the ultrasonic transmission speed, further acquire the spatial distance between each ultrasonic transmitter 5 and the target touch point, and generate a voltage signal for the corresponding ultrasonic transmitter 5 according to the spatial distance and the phase delay data, so as to control each ultrasonic transmitter 5 to emit the ultrasonic wave according to the corresponding phase delay, so that the ultrasonic wave emitted by each ultrasonic transmitter 5 is simultaneously transmitted to the target touch point, and the ultrasonic wave generated by a plurality of ultrasonic transmitters 5 at the same time can be enhanced after the ultrasonic waves generated by the target touch points are superposed, when the number of the ultrasonic emitters 5 reaches a certain number, the required ultrasonic waves can be obtained by superposition.
It should be noted that, because the higher the frequency of the ultrasonic wave in the air medium, the weaker the penetrability and the larger the energy loss according to the theory related to the ultrasonic wave, the ultrasonic frequency should not be too high to ensure the efficiency of the ultrasonic transducer, and preferably below 60KHz is desirable. The ultrasonic wave emitted by the ultrasonic emitter 5 has directivity, cannot be radiated in an ideal spherical wave form, is limited by the direction angle of the ultrasonic emitter 5, generally ranges from 60 degrees to 80 degrees, and needs to be comprehensively considered by combining the array size, the direction angle and the preset area size when the ultrasonic emitter array 3 is arranged. The multi-channel phased array ultrasonic transmitting system 1000 further comprises a single plate 8, the control unit 1 and the driving unit 2 are integrated on the single plate 8, and the size of the single plate 8 is equivalent to that of the ultrasonic transmitter array 3. Therefore, the voltage signal output by the control unit 1 and the driving signal output by the driving unit 2 are transmitted in the board, the wiring is short, and the signal transmission is convenient. The single boards 8 of the integrated control unit 1 and the drive unit 2 may be interconnected with the ultrasonic transmitter array 3 by inter-board connectors. In this embodiment, the power supply unit 4 can supply power to the control unit 1 through the single board 8, and then the control unit 1 supplies power to the driving unit 2 and the ultrasonic transmitter array 3.
Therefore, the control unit 1 can calculate the phase delay data of each ultrasonic transmitter 5 according to the coordinate parameters of the target touch point and the position parameters of each ultrasonic transmitter 5, and then generate a corresponding voltage signal according to the phase delay data, the driving unit 2 can amplify the voltage signal to obtain a driving signal, and transmit the driving signal to the corresponding ultrasonic transmitter 5 through a corresponding channel, so that the ultrasonic waves transmitted by each ultrasonic transmitter 5 are superposed at the target touch point, the required ultrasonic waves can be accurately obtained at the target touch point through a simpler structure and lower cost, and the required functions can be realized by using the ultrasonic waves. For example, the ultrasonic waves can generate sound pressure in a certain space, the generated sound pressure is inversely proportional to the distance, the farther the distance is, the weaker the generated sound pressure is, although the sound pressure generated by the ultrasonic waves emitted by a single ultrasonic emitter 5 cannot be normally sensed by a human body, the superposed sound pressure is enhanced after the ultrasonic waves generated by a plurality of ultrasonic emitters 5 are superposed at a target touch point at the same time, and when the number of the ultrasonic emitters 5 reaches a certain number, the superposed sound pressure can be sensed by the human body, so that the tactile feedback is realized. Moreover, since the ultrasonic waves are generated by the plurality of ultrasonic wave generators 5 and are superposed, the ultrasonic wave transmitter 5 can be a small-power and small-sized ultrasonic wave transmitter 5, so that the cost and the complexity of the structure are further reduced, the influence of the multi-channel phased array ultrasonic wave transmitting system 1000 on the surrounding environment such as a human body can be reduced, and the surrounding environment such as the human body cannot be damaged.
Further, referring to fig. 2, the above-described control unit 1 includes: data processing module 11, data storage module 12, power module 13.
Specifically, the data processing module 11 is configured to obtain a coordinate parameter of a target touch point in a preset area, calculate phase delay data of each ultrasonic transmitter 5 according to the coordinate parameter, a position parameter of each ultrasonic transmitter 5, and an ultrasonic transmission speed, and generate a voltage signal of each channel corresponding to each ultrasonic transmitter array 3 according to the phase delay data; the data storage module 12 is used for storing data in the data processing process of the data processing module 11; and the power supply module 13 is used for converting the electric energy provided by the power supply unit 4 and providing the converted electric energy to the ultrasonic transmitter array 3, the data processing module 11, the data storage module 12 and the driving unit 2.
The data processing module 11 may be, for example, an FPGA (Field Programmable Gate Array), and the pins of the FPGA can be customized, and one FPGA chip or a plurality of FPGA chips can be selected according to the actual needs of the multi-channel phased Array ultrasonic transmitting system 1000. For example, if the ultrasonic transmitter array 3 is a single array or a combination of single directional arrays, and the routing of the multi-channel phased array ultrasonic transmitting system 1000 is relatively concentrated, it is possible to select an FPGA chip to satisfy the situation of the multi-channel phased array ultrasonic transmitting system 1000 with high integration level; if the ultrasonic transmitter array 3 is a super-large-scale array or a multi-direction array combination, because the number of channels of the super-large-scale array is large, a single chip (the number of pins of an FPGA chip has a limit value) cannot meet the number of channels required by a system; due to the fact that the array arrangement directions of the multi-direction array combination are various, signal routing is complex, a plurality of small-scale FPGA chips can be arranged nearby in all directions, and design flexibility of the multi-channel phased array ultrasonic transmitting system 1000 is improved. The data processing module 11 generates a voltage signal according to the phase delay data, for example, the voltage signal may be obtained by performing multi-channel clock distribution and delay control to generate a clock signal. Thus, the application range of the multi-channel phased array ultrasonic transmission system 1000 can be increased.
The data storage module 12 includes a Static Random Access Memory (SRAM), for example, for storing data in the data processing process of the data processing module 11; the system also comprises a flash memory, such as an optional coding type flash memory, which is used for storing and loading the logic object file in the data processing process.
It should be noted that, in the process of practical application, the control unit 1 may also output voltage signals with different channel numbers according to practical needs, so that the number of the ultrasonic transmitters 5 that are actually used may be adjusted on the premise of not changing the multi-channel phased array ultrasonic transmission system 1000, thereby changing the ultrasonic waves obtained by superimposing at the target contact point.
Further, referring to fig. 3, the above-described driving unit 2 includes: an amplification module 21 and an interface module 22.
Specifically, the amplifying module 21 is configured to amplify each voltage signal to output a driving signal; and the interface module 22 is used for transmitting each driving signal to the corresponding ultrasonic transmitter 5 through the corresponding channel. The interface module 22 can output a driving signal through a configurable I/O port, and can also be used to complete the external debugging and communication functions of the multi-channel phased array ultrasound transmitting system 1000.
In one embodiment of the present invention, as the ultrasonic waves propagate in the air medium, the propagation speed may change due to the influence of the ambient temperature. Thus, the above-mentioned control unit 1 is also adapted to: acquiring the ambient temperature, and correcting the ultrasonic transmission speed according to the ambient temperature; the phase delay data of each ultrasonic transmitter 5 is calculated based on the coordinate parameters, the position parameters of each ultrasonic transmitter 5, and the corrected ultrasonic transmission speed.
Specifically, a high-precision temperature sensor may be further integrated in the control unit 1, and the sensor is controlled by the control unit 1 to measure the ambient temperature in real time, so as to correct the actual temperature according to the measured value. Referring to fig. 4, while obtaining the coordinate parameter of the target touch point, the temperature data may be collected in real time, and then the sound velocity is determined according to the temperature data, and then the ultrasonic transmission speed is corrected according to the sound velocity, and the corrected ultrasonic transmission speed is obtained according to the following formula:
where c is the corrected ultrasonic transmission speed, T is the ambient temperature, c0The ultrasonic transmission speed is 1 standard atmospheric pressure and 0 ℃ temperature.
Further, after the ultrasonic transmission speed is corrected, whether the ultrasonic transmission speed needs to be corrected is judged again, and the process is repeated until the ultrasonic transmission speed does not need to be corrected.
In one embodiment of the invention, the control unit 1 is further configured to: and refreshing according to a preset frequency so as to scan a plurality of target touch points in a preset area. For example, when the multi-channel phased array ultrasonic wave emitting system 1000 needs to be used for scanning, the coordinates of a plurality of target touch points of a scanning object can be confirmed by combining the touch point distribution of the scanning object, the control unit 1 calculates the phase delay data of each ultrasonic wave emitter 5 according to one of the target touch point coordinates, starts to generate a clock signal, further performs signal modulation, and performs multi-channel clock distribution and delay control to obtain a voltage signal. The voltage signal is output to the driving unit 2 to be amplified to obtain a driving signal, and each ultrasonic transmitter 5 is driven to transmit ultrasonic waves according to the driving signal. And then refreshing according to a preset frequency, and calculating phase delay data of each ultrasonic transmitter 5 according to coordinates of another target touch point. The above process is repeated until the scanning is completed.
To sum up, the multi-channel phased array ultrasonic transmitting system of the embodiment of the invention can realize that the control unit calculates the phase delay data of each ultrasonic transmitter according to the coordinate parameters of the target touch point and the position parameters of each ultrasonic transmitter, and further generates the corresponding voltage signal according to the phase delay data, the driving unit can amplify the voltage signal to obtain the driving signal, and transmit the driving signal to the corresponding ultrasonic transmitter through the corresponding channel, so that the ultrasonic transmitter array transmits the ultrasonic waves, and the required ultrasonic waves can be accurately obtained at the target touch point through a simpler structure and lower cost; and the ultrasonic waves transmitted by the ultrasonic transmitters are superposed at the target touch point, so that the power and the efficiency of the multichannel phased array ultrasonic transmitting system are improved. Moreover, the ultrasonic transmitter array can be formed by adopting small-power and miniaturized ultrasonic transmitters, so that the cost and the complexity of the structure are further reduced, and meanwhile, the damage to the surrounding environment such as a human body can be avoided. The control unit can also adjust the number of channels of the output voltage signals, so that the number of the used ultrasonic transmitters can be adjusted on the premise of not changing the multi-channel phased array ultrasonic transmitting system. The control unit can be further used for refreshing according to a preset frequency so as to scan a plurality of target touch points in a preset area. And the sound velocity can be corrected according to the temperature, so that the accuracy of the multichannel phased array ultrasonic transmitting system is improved.
It should be noted that the logic and/or steps represented in the flowcharts or otherwise described herein, such as an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (9)
1. A multi-channel phased array ultrasound transmission system, comprising:
an ultrasonic transmitter array comprising a plurality of ultrasonic transmitters for transmitting ultrasonic waves to a predetermined area;
the control unit is used for acquiring coordinate parameters of a target touch point in the preset area, calculating phase delay data of each ultrasonic transmitter according to the coordinate parameters, position parameters of each ultrasonic transmitter and ultrasonic transmission speed, and generating voltage signals of each channel corresponding to each ultrasonic transmitter array according to the phase delay data;
the driving unit is used for amplifying each voltage signal to output a driving signal and transmitting each driving signal to the corresponding ultrasonic transmitter through the corresponding channel so as to superpose the ultrasonic waves transmitted by each ultrasonic transmitter on the target touch point;
a power supply unit for supplying power to the ultrasonic transmitter array, the control unit and the driving unit;
wherein the control unit is further configured to:
acquiring an ambient temperature, and correcting the ultrasonic transmission speed according to the ambient temperature;
and calculating phase delay data of each ultrasonic transmitter according to the coordinate parameters, the position parameters of each ultrasonic transmitter and the corrected ultrasonic transmission speed.
2. The multi-channel phased array ultrasound transmission system according to claim 1, wherein said control unit is further adapted to:
and refreshing according to a preset frequency so as to scan a plurality of target touch points in the preset area.
3. The multi-channel phased array ultrasonic transmission system as claimed in claim 1 or 2, wherein said control unit comprises:
the data processing module is used for acquiring coordinate parameters of a target touch point in the preset area, calculating phase delay data of each ultrasonic transmitter according to the coordinate parameters, position parameters of each ultrasonic transmitter and ultrasonic transmission speed, and generating voltage signals of each channel corresponding to each ultrasonic transmitter array according to the phase delay data;
the data storage module is used for storing data in the data processing process of the data processing module;
and the power supply module is used for converting the electric energy provided by the power supply unit and providing the converted electric energy to the ultrasonic transmitter array, the data processing module, the data storage module and the driving unit.
4. The multi-channel phased array ultrasound transmit system of claim 3, wherein said data storage module comprises:
the static random access memory is used for storing data in the data processing process of the data processing module;
and the flash memory is used for storing and loading the logic target file in the data processing process.
5. The multi-channel phased array ultrasonic transmission system of claim 3 wherein the data processing module includes a plurality of FPGA chips.
6. The multi-channel phased array ultrasonic transmission system as claimed in claim 1, wherein said driving unit comprises:
the amplifying module is used for amplifying each voltage signal to output a driving signal;
and the interface module is used for transmitting each driving signal to the corresponding ultrasonic transmitter through the corresponding channel.
7. The multi-channel phased array ultrasound transmit system of claim 1, wherein the modified ultrasound transmission speed is obtained by:
wherein c is the corrected ultrasonic transmission speed, T is the ambient temperature, c0The ultrasonic transmission speed is 1 standard atmospheric pressure and 0 ℃ temperature.
8. The multi-channel phased array ultrasonic transmitter system of claim 1 further comprising a single board on which both the control unit and the drive unit are integrated, the size of the single board being comparable to the size of the ultrasonic transmitter array.
9. The multi-channel phased array ultrasound transmission system according to claim 1, wherein the ultrasound transmitter array is one of a line array, a two-dimensional rectangular array, a circular array.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10311822A (en) * | 1997-05-12 | 1998-11-24 | Toshiba Corp | Ultrasonic flaw detector |
| CN109431536A (en) * | 2018-09-17 | 2019-03-08 | 西安交通大学 | A kind of the Real-time High Resolution spatial and temporal distributions imaging method and system of focused ultrasonic cavitation |
| CN112216266A (en) * | 2020-10-20 | 2021-01-12 | 傅建玲 | Phase-control multi-channel sound wave directional transmitting method and system |
| CN112764592A (en) * | 2021-01-15 | 2021-05-07 | 安徽省东超科技有限公司 | Touch feedback system, terminal device, touch feedback control method and storage medium |
| CN112998745A (en) * | 2019-12-20 | 2021-06-22 | 深圳驼人生物医疗电子股份有限公司 | Transmitting beam forming method and system for ultrasonic imaging and diagnostic equipment |
-
2022
- 2022-01-06 CN CN202210007984.0A patent/CN114285494A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10311822A (en) * | 1997-05-12 | 1998-11-24 | Toshiba Corp | Ultrasonic flaw detector |
| CN109431536A (en) * | 2018-09-17 | 2019-03-08 | 西安交通大学 | A kind of the Real-time High Resolution spatial and temporal distributions imaging method and system of focused ultrasonic cavitation |
| CN112998745A (en) * | 2019-12-20 | 2021-06-22 | 深圳驼人生物医疗电子股份有限公司 | Transmitting beam forming method and system for ultrasonic imaging and diagnostic equipment |
| CN112216266A (en) * | 2020-10-20 | 2021-01-12 | 傅建玲 | Phase-control multi-channel sound wave directional transmitting method and system |
| CN112764592A (en) * | 2021-01-15 | 2021-05-07 | 安徽省东超科技有限公司 | Touch feedback system, terminal device, touch feedback control method and storage medium |
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