CN111986645A - Focusing method and device of high-speed controllable wave and terminal equipment - Google Patents
Focusing method and device of high-speed controllable wave and terminal equipment Download PDFInfo
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Abstract
The application belongs to the technical field of sound wave control, and provides a focusing method, a device and equipment of high-speed controllable waves, wherein the method comprises the following steps: acquiring a target focus position, and calculating the distance between each sound production unit and the target focus position; distributing a preset carrier spectrum to each sound generating unit according to a preset spectrum distribution rule and distance so as to enable sound waveforms emitted from each sound generating unit according to the distributed sound generating wavelengths to form maximum peak superposition at a target focus position, avoid the peak generated by any sound generating unit from being superposed in advance in propagation as far as possible, and ensure that sound energy cannot be induced to exceed exponential collapse caused by the elastic limit of a medium (generally air or water and oil) as far as possible; and obtaining the sound production frequency corresponding to each sound production unit according to the sound production wavelength corresponding to each sound production unit. The problem of the sound wave directive property that laser sound generating mechanism sent is poor has been solved to this application embodiment.
Description
Technical Field
The invention relates to the technical field of sound wave control, in particular to a method and a device for focusing high-speed controllable waves and terminal equipment.
Background
In the current law enforcement field, with the increasing low intensity conflict, photoelectric non-destructive weapons and equipment are also abundant and are used more and more widely. Among these electro-optical non-destructive devices is an electro-acoustic weapon, i.e. a laser sounding device, such as an audio alarm, which uses high intensity sound waves to generate an alarm. However, in the current audio alarm in the market, generally, the same laser is emitted to the sound generating device to knock the sound generating device to generate sound waves, the sound propagation distance is short, and the angle of sound propagation is divergent, so that the directivity of the sound waves is poor.
Disclosure of Invention
In view of this, embodiments of the present invention provide a method, an apparatus, and a device for focusing a high-speed controllable wave, so as to solve the problem of poor directivity of a sound wave emitted by a laser sound generating apparatus.
The first aspect of the embodiment of the invention provides a focusing method of high-speed controllable waves, which is applied to a laser sound-generating device, wherein the laser sound-generating device comprises a plurality of sound-generating units and a laser device;
the focusing method of the high-speed controllable wave comprises the following steps:
acquiring target focus positions, and calculating the distance between each sound production unit and the target focus positions;
distributing a preset carrier frequency spectrum to each sound production unit according to a preset frequency spectrum distribution rule and the distance so as to enable sound waveforms emitted from each sound production unit according to the distributed sound production wavelength to form maximum peak superposition at the target focus position;
obtaining the sounding frequency corresponding to each sounding unit according to the sounding wavelength corresponding to each sounding unit;
and controlling the laser device to emit laser with the sounding frequency corresponding to each sounding unit so as to knock each sounding unit to generate a sound waveform.
In one embodiment, the allocating a preset carrier spectrum to each sound generating unit according to a preset spectrum allocation rule and the distance includes:
distributing a plurality of sounding wavelengths which can divide all the distances in the wavelength range of the preset carrier spectrum to each sounding unit; the sounding wavelengths correspond to the sounding units one by one; and each two sounding wavelengths are relatively prime.
In one implementation example, the allocating, to each sound emission unit, a plurality of sound emission wavelengths that are within a wavelength range of the preset carrier spectrum and are capable of dividing all the distances evenly further includes:
sequencing and numbering each sounding unit according to the distance value corresponding to each sounding unit;
and allocating the sounding wavelength with the shortest wavelength in the plurality of sounding wavelengths to the sounding unit corresponding to the shortest distance in the distances, and allocating the sounding wavelengths to the sounding units in sequence according to the sequence number so as to enable the sounding wavelengths corresponding to the sounding units arranged according to the sequence number to increase or decrease progressively.
In one implementation example, the controlling the laser device to emit laser light with a sound emission frequency corresponding to each sound emission unit so as to tap each sound emission unit to generate a sound waveform includes:
arranging the sounding units in a sequence from far to near according to the distance of the sounding units;
and controlling the laser device to emit the laser with the sounding frequency corresponding to each sounding unit one by one according to the arrangement sequence.
In one implementation example, the obtaining a target focus position and calculating a distance between each sound generating unit and the target focus position includes:
and calculating the distance between each sound production unit and the target focus position according to a two-way merging algorithm.
In one example, the preset carrier spectrum has a wavelength range [0.0056, 3.4] in meters. The wavelength range of a preset carrier wave is changed in various media (such as air or water); for example, the wavelength range of the preset carrier spectrum in the water medium is [0.0024864, 15] and the unit is meter.
A second aspect of an embodiment of the present invention provides a high-speed controllable wave focusing apparatus, including:
the target focus position acquisition module is used for acquiring a target focus position and calculating the distance between each sound production unit and the target focus position;
the frequency spectrum distribution module is used for distributing a preset carrier frequency spectrum to each sound production unit according to a preset frequency spectrum distribution rule and the distance so as to enable sound waveforms emitted by each sound production unit according to the distributed sound production wavelength to form maximum peak superposition at the target focus position;
the sounding frequency calculation module is used for obtaining the sounding frequency corresponding to each sounding unit according to the sounding wavelength corresponding to each sounding unit;
and the sound waveform generating module is used for controlling the laser device to emit laser with the sound generating frequency corresponding to each sound generating unit to the sound generating units so as to knock the sound generating units to generate sound waveforms.
In one example implementation, the spectrum allocation module includes:
the frequency spectrum allocation unit is used for allocating a plurality of sounding wavelengths which can divide all the distances completely within the wavelength range of the preset carrier frequency spectrum to each sounding unit; the sounding wavelengths correspond to the sounding units one by one; and each two sounding wavelengths are relatively prime.
A third aspect of embodiments of the present invention provides a computer-readable storage medium, which stores a computer program that, when executed by a processor, implements the steps of the method of the first aspect.
A fourth aspect of embodiments of the present invention provides a terminal device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the steps of the method for focusing a high-speed controllable wave according to the first aspect when executing the computer program.
The embodiment of the invention provides a high-speed controllable wave focusing method, a high-speed controllable wave focusing device and terminal equipment, which are applied to a laser sound generating device; the laser sounding device comprises a plurality of sounding units and a laser device; acquiring a target focus position, wherein the distance between each sound production unit and the target focus position needs to be calculated because the sound wave transmission state is related to the transmission distance; distributing a preset carrier spectrum to each sound production unit according to a preset spectrum distribution rule and the distance; in order to avoid energy loss caused by the fact that sound waveforms emitted by a plurality of sound-emitting units are overlapped with other sound waveforms in advance when reaching a target focus position, wave bands of preset carrier frequency spectrums can be redistributed to all the sound-emitting units according to preset frequency spectrum distribution rules and calculated distances, and therefore the sound-emitting units form maximum peak overlapping at the target focus position according to the sound waveforms emitted by the distributed sound-emitting wavelengths. Obtaining the sounding frequency corresponding to each sounding unit according to the sounding wavelength corresponding to each sounding unit; in the laser sounding device, laser is emitted to each sounding unit through the laser device to knock each sounding unit, so that each sounding unit emits sound waves. After the carrier sounding frequencies corresponding to the sounding units are obtained, the laser device is controlled to emit laser of the sounding frequencies corresponding to the sounding units, so that the sounding units only emit sound waves of sounding wavelengths which are correspondingly distributed according to target focus positions, the sound waveforms can form maximum peak superposition at the target focus positions, focusing is achieved, and the sounding directivity of the laser sounding device is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic flow chart of a method for focusing a high-speed controllable wave according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a laser sound generating device according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a coordinate system established during distance calculation according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a focusing apparatus for high-speed controllable waves according to a second embodiment of the present invention;
fig. 5 is a schematic structural diagram of a focusing apparatus for high-speed controllable waves according to a third embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the technical solutions in the embodiments of the present invention will be clearly described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "comprises" and "comprising," and any variations thereof, in the description and claims of this invention and the above-described drawings are intended to cover non-exclusive inclusions. For example, a process, method, or system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus. Furthermore, the terms "first," "second," and "third," etc. are used to distinguish between different objects and are not used to describe a particular order.
Example one
Fig. 1 is a schematic flow chart of a high-speed controllable wave focusing method according to an embodiment of the present invention. Specifically, the focusing method of the high-speed controllable wave is applied to a laser sounding device, and the laser sounding device can be an audio alarm and other equipment. The method can be executed by a high-speed controllable wave focusing device, and the device can be a processor or an MCU (micro control unit) and the like arranged in the high-speed controllable wave focusing device; in the embodiment of the present application, a focusing device of a high-speed controllable wave is taken as an execution subject, and the method specifically includes the following steps:
in the prior art, a laser sound generating device, such as an audio alarm, is a common audio alarm in the market at present, and generally emits sound waves by knocking the sound generating device by emitting the same laser to the sound generating device, the sound propagation distance is short, and the angle of sound propagation is divergent, so that the directivity of the sound waves is poor. To solve this problem, the present embodiment obtains a target focus position, and calculates a distance between each sound generating unit and the target focus position; in order to avoid energy loss caused by the fact that sound waveforms emitted by a plurality of sound-emitting units are overlapped with other sound waveforms in advance when reaching a target focus position, wave bands of preset carrier frequency spectrums are redistributed to all the sound-emitting units according to preset frequency spectrum distribution rules and distances obtained through calculation, and therefore the sound-emitting units form maximum peak overlapping at the target focus position according to the sound waveforms emitted by the sound-emitting wavelengths obtained through distribution. The sound wave focusing is realized, and the sound production directivity of the laser sound production device is improved.
S110, acquiring a target focus position, and calculating the distance between each sound production unit and the target focus position.
In a practical application scenario, as shown in fig. 2, the laser sound generating device includes a plurality of sound generating units 10 and a laser device 20; and the laser sounding device also comprises a sounding inner cavity 30. The sound production principle of the laser sound production device is that laser beams produced by the laser sound production device 20 pass through the sound production inner cavity 30 and then irradiate onto each sound production unit 10 so as to knock each sound production unit 10 to produce sound waves. Specifically, often interval distribution is on the mounting panel for a plurality of sound generating unit among the laser sound generating device, and includes that a plurality of strike zones are cellular gathering and arrange in each sound generating unit.
The focusing device of the high-speed controllable wave can receive a control instruction containing a target focusing position through an external device or a client in communication connection with the external device. When the focusing device of the high-speed controllable waves receives a control instruction comprising a target focus position and acquires the target focus position, calculating the distance between each sound generating unit in the laser sound generating device and the target focus position. Since the transmission state of the sound wave is related to the transmission distance, in order to control the transmission state, i.e., the focusing position, of the sound wave generated by each sound generating unit in the laser sound generating device, the distance between each sound generating unit in the laser sound generating device and the target focal position needs to be calculated.
In one implementation example, to achieve fast calculation of the distance between each sound generating unit and the obtained target focus position, the distance between each sound generating unit and the target focus position may be calculated according to a two-way merging algorithm.
Specifically, each sounding unit in the laser sounding device is cellular on the plane, the arrangement space is uniform and regular, and the distance between each sounding unit and the target focus position can be calculated at high speed by adopting two-way merging algorithm stable sequencing according to the position arrangement characteristics of the sounding units.
For example, the specific process of calculating the distance between each sound generating unit in the laser sound generating device and the obtained target focus position may be as follows: and taking the distance measuring instrument arranged near the sounding surface where each sounding unit is positioned as a coordinate origin, taking the horizontal right side of the obtained target focusing position as a horizontal axis, and establishing a cylindrical coordinate system. As shown in fig. 3. For each sound unit, the distance between the sound unit and the target focus position may be calculated as:
k is the distance from the sound production unit to the target focus position; l is the distance from the distance meter to the target focus position, d is the distance from the sounding unit to the distance meter (original point); alpha is the included angle between the distance d from the sounding unit to the distance meter (original point) and the horizontal axis; making an intersection point of a first perpendicular line of the target focal position and the transverse axis and a second perpendicular line which starts from the original point and is perpendicular to the sounding surface where the sounding unit is located in the plane coordinate system, wherein beta is an included angle between the intersection point and the transverse axis; theta is an included angle between the second perpendicular line and the distance L from the distance meter to the target focus position.
S120, distributing a preset carrier frequency spectrum to each sound production unit according to a preset frequency spectrum distribution rule and the distance, so that sound waveforms emitted from each sound production unit according to the distributed sound production wavelengths form maximum peak superposition at the target focus position;
in order for a person or an object at a target point to hear or feel audio which is required to be heard by the person or the object, the laser sound generating device adopts an ultrasonic carrier frequency wave, and the carrier wave wavelength allocated to the sound generating unit determines the transmission state of a sound waveform generated by the sound generating unit. After the distance between each sound generating unit and the target focus position is obtained, in order to avoid energy loss caused by overlapping of a sound waveform emitted by any sound generating unit with sound waveforms emitted by other sound generating units before reaching the target focus position, the wave band of the preset carrier frequency spectrum can be reallocated to each sound generating unit according to the preset frequency spectrum allocation rule and the calculated distance, so that each sound generating unit forms maximum peak overlapping at the target focus position according to the sound waveform emitted by the allocated sound generating wavelength, in addition, the phenomenon that the peak generated by any sound generating unit is overlapped in advance in the transmission process is avoided as far as possible, and the phenomenon that the sound energy is subjected to exponential collapse caused by exceeding the elastic limit of a medium (generally air or water and oil) due to the advance induction is ensured as far as possible.
In an embodiment, the specific process of allocating a preset carrier spectrum to each sound generating unit according to a preset spectrum allocation rule and the distance may be as follows: distributing a plurality of sounding wavelengths which can divide all the distances in the wavelength range of the preset carrier spectrum to each sounding unit; the sounding wavelengths correspond to the sounding units one by one; and each two sounding wavelengths are relatively prime.
Specifically, in order to avoid energy loss caused by superposition of the sound waveform emitted by any sound-emitting unit and the sound waveforms emitted by other sound-emitting units before reaching the target focal position, the assigned sound-emitting wavelength of each sound-emitting unit needs to satisfy the following conditions: 1. the sound emission wavelength allocated to each sound emission unit can divide the distance corresponding to each sound emission unit into whole parts or approach to the whole parts within a preset error range; 2. the sounding wavelengths allocated to any two sounding units are relatively prime, and the maximum common factor between any two sounding wavelengths is at least ensured not to exceed one, so that the maximum superposition of multiple sound waves in advance before the sound waveform sent by any sounding unit reaches the target focus position is avoided; 3. each sound emitting unit is assigned a corresponding sound emitting wavelength. And setting a preset spectrum allocation rule according to the conditions, so that the sounding wavelength allocated by each sounding unit can meet the conditions after the preset carrier spectrum is allocated to each sounding unit according to the preset spectrum allocation rule and the calculated distance. Optionally, the wavelength range of the preset carrier spectrum is [3.4, 0.0056], and the unit is meter; the preset error can be that the integral deviation is less than 8 degrees, namely the difference is not more than 2 pi/45, and the maximum energy at the target point is not less than 99 percent of the peak, and the expression of the formula can be that K mod lambda is more than or equal to +/-0.977 lambda, wherein K is the distance corresponding to any sound production unit, and lambda is any sound production wavelength; mod is the same remainder theorem. The wavelength range of a preset carrier wave is changed in various media (such as air or water); for example, the wavelength range of the preset carrier spectrum in the water medium is [0.0024864, 15] and the unit is meter.
In an implementation example, since the distance values from the respective sound generating units to the obtained target focusing position are different, the sound generating wavelength is allocated according to the distance corresponding to each sound generating unit, so that the focusing effect of the sound wave can be further improved. The specific process of allocating the plurality of sounding wavelengths capable of dividing all the distances in the wavelength range of the preset carrier spectrum to each sounding unit further includes:
sequencing and numbering each sounding unit according to the distance value corresponding to each sounding unit; and allocating the sounding wavelength with the shortest wavelength in the plurality of sounding wavelengths to the sounding units corresponding to the shortest distance in all the distances, and allocating the sounding wavelengths to the sounding units in sequence according to the sequence number so as to enable the sounding wavelengths corresponding to the sounding units arranged according to the sequence number to increase or decrease progressively.
Specifically, in order to conveniently distribute sounding wavelengths according to the distances of the distance values corresponding to the sounding units, the sounding units can be sequenced and numbered according to the distance values corresponding to the sounding units, so that the distances of the sounding units are increased or decreased progressively after the sounding units are arranged according to the numbers. Optionally, the sound units may be ordered and numbered according to the distance value from small to large. And then distributing the sounding wavelength with the shortest wavelength in the plurality of sounding wavelengths to the sounding unit corresponding to the shortest distance in the distances, and distributing the sounding wavelengths to the sounding units in sequence according to the sequence number so as to enable the sounding wavelengths corresponding to the sounding units arranged according to the sequence number to increase or decrease progressively. And allocating the sounding wavelength with the shortest wavelength in the plurality of sounding wavelengths to the sounding units corresponding to the shortest distance in all the distances, so that the sounding units corresponding to the shortest distance in all the distances preferentially adopt the highest frequency spectrum.
For example, when the sound units are sequentially numbered according to the distance values corresponding to the sound units, the sound units numbered 1,2,3 … n are assigned with the sound emission wavelength γ1,γ2,γ3...γn(ii) a The corresponding sounding wavelength allocation formula may be: gamma ray1⊥γ2⊥γ3...⊥γnAnd gamma is1<γ2<γ3...<γn。
S130, obtaining the sounding frequency corresponding to each sounding unit according to the sounding wavelength corresponding to each sounding unit;
after the corresponding sounding wavelength allocated to each sounding unit is obtained, the sounding frequency corresponding to each sounding unit can be obtained according to the corresponding conversion relation between the wavelength and the frequency.
And S140, controlling the laser device to emit laser with the sounding frequency corresponding to each sounding unit so as to knock each sounding unit to generate a sound waveform.
Specifically, the laser device of the laser sound production device comprises a laser generator and a vibrating mirror structure. Obtain each after the sound production frequency that sound production unit corresponds, can produce the laser of the sound production frequency that each sound production unit corresponds through the laser generator among the control laser device to through the laser of the sound production frequency that control galvanometer launched each sound production unit and correspond, in order to strike each sound production unit, thereby make each sound production unit only send and correspond the sound wave that obtains the sound production wavelength according to target focus position, the sound wave form can form the biggest crest stack in target focus position, realizes focusing and improves laser sound production device's sound production directive property.
In one embodiment, to ensure that the sound waves generated by the sound generating units can reach the target focusing position at the same time, the specific process of controlling the laser device to emit the laser with the sound generating frequency corresponding to each sound generating unit further includes: arranging the sounding units in a sequence from far to near according to the distance of the sounding units; and controlling the laser device to emit the laser with the sounding frequency corresponding to each sounding unit one by one according to the arrangement sequence.
Specifically, the sounding units are arranged in a sequence from far to near according to the distance of the sounding units; and controlling the laser device to knock each sounding unit one by one from far to near according to the arrangement sequence. Because the sound and the ultrasonic waves need time to be transmitted in the gas, only the sound production unit with the farthest distance is preferentially knocked, and the sound waves emitted by the last units can reach the target focusing position at the same time.
According to the focusing method of the high-speed controllable waves, provided by the embodiment of the invention, the target focus position is obtained, and the distance between each sound generating unit and the target focus position needs to be calculated because the transmission state of the sound waves is related to the transmission distance; distributing a preset carrier spectrum to each sound production unit according to a preset spectrum distribution rule and the distance; in order to avoid energy loss caused by the fact that sound waveforms emitted by a plurality of sound-emitting units are overlapped with other sound waveforms in advance when reaching a target focus position, wave bands of preset carrier frequency spectrums can be redistributed to all the sound-emitting units according to preset frequency spectrum distribution rules and calculated distances, and therefore the sound-emitting units form maximum peak overlapping at the target focus position according to the sound waveforms emitted by the distributed sound-emitting wavelengths. Obtaining the sounding frequency corresponding to each sounding unit according to the sounding wavelength corresponding to each sounding unit; in the laser sounding device, laser is emitted to each sounding unit through the laser device to knock each sounding unit, so that each sounding unit emits sound waves. After the carrier sounding frequencies corresponding to the sounding units are obtained, the laser device is controlled to emit laser of the sounding frequencies corresponding to the sounding units, so that the sounding units only emit sound waves of sounding wavelengths which are correspondingly distributed according to target focus positions, the sound waveforms can form maximum peak superposition at the target focus positions, focusing is achieved, and the sounding directivity of the laser sounding device is improved.
Example two
Fig. 4 shows a focusing apparatus for high-speed controllable waves according to a second embodiment of the present invention. On the basis of the first embodiment, the embodiment of the present invention further provides a high-speed controllable wave focusing apparatus 4, which includes:
a target focus position obtaining module 401, configured to obtain a target focus position, and calculate a distance between each sound generating unit and the target focus position;
a spectrum allocation module 402, configured to allocate a preset carrier spectrum to each of the sound generating units according to a preset spectrum allocation rule and the distance, so that a maximum peak superposition is formed at the target focus position by sound waveforms emitted from each of the sound generating units according to the allocated sound generating wavelengths;
a sound generation frequency calculation module 403, configured to obtain, according to the sound generation wavelength corresponding to each sound generation unit, a sound generation frequency corresponding to each sound generation unit;
and the sound waveform generating module 404 is configured to control the laser device to emit laser with a sound emitting frequency corresponding to each sound emitting unit so as to knock each sound emitting unit to generate a sound waveform.
In one implementation example, the spectrum allocation module 402 includes:
the frequency spectrum allocation unit is used for allocating a plurality of sounding wavelengths which can divide all the distances completely within the wavelength range of the preset carrier frequency spectrum to each sounding unit; the sounding wavelengths correspond to the sounding units one by one; and each two sounding wavelengths are relatively prime.
In an implementation example, the spectrum allocation module 402 further includes:
the sequencing unit is used for sequencing and numbering each sounding unit according to the distance value corresponding to each sounding unit;
and the second spectrum allocation unit is used for allocating the sounding wavelength with the shortest wavelength in the plurality of sounding wavelengths to the sounding unit corresponding to the shortest distance in the distances, and allocating the sounding wavelengths to the sounding units in sequence according to the sequence number so as to enable the sounding wavelengths corresponding to the sounding units arranged according to the sequence number to increase or decrease progressively.
In one implementation example, the sound waveform generation module 404 includes:
the arrangement unit is used for arranging the sounding units in a sequence from far to near according to the distance of the sounding units;
and the sound waveform generating unit is used for controlling the laser device to emit the laser with the sounding frequency corresponding to each sounding unit one by one according to the arrangement sequence.
According to the high-speed controllable wave focusing device provided by the embodiment of the invention, the target focus position is obtained, and the distance between each sound generating unit and the target focus position needs to be calculated because the sound wave transmission state is related to the transmission distance; distributing a preset carrier spectrum to each sound production unit according to a preset spectrum distribution rule and the distance; in order to avoid energy loss caused by the fact that sound waveforms emitted by a plurality of sound-emitting units are overlapped with other sound waveforms in advance when reaching a target focus position, wave bands of preset carrier frequency spectrums can be redistributed to all the sound-emitting units according to preset frequency spectrum distribution rules and calculated distances, and therefore the sound-emitting units form maximum peak overlapping at the target focus position according to the sound waveforms emitted by the distributed sound-emitting wavelengths. Obtaining the sounding frequency corresponding to each sounding unit according to the sounding wavelength corresponding to each sounding unit; in the laser sounding device, laser is emitted to each sounding unit through the laser device to knock each sounding unit, so that each sounding unit emits sound waves. After the carrier sounding frequencies corresponding to the sounding units are obtained, the laser device is controlled to emit laser of the sounding frequencies corresponding to the sounding units, so that the sounding units only emit sound waves of sounding wavelengths which are correspondingly distributed according to target focus positions, the sound waveforms can form maximum peak superposition at the target focus positions, focusing is achieved, and the sounding directivity of the laser sounding device is improved.
EXAMPLE III
Fig. 5 is a schematic structural diagram of a terminal device according to a fourth embodiment of the present invention. The terminal device includes: a processor 51, a memory 52 and a computer program 53 stored in said memory 52 and executable on said processor 51, such as a program for a focusing method of high-speed controllable waves. The processor 51 implements the steps in the above-described embodiment of the focusing method of the high-speed controllable wave, such as steps S110 to S140 shown in fig. 1, when executing the computer program 53.
Illustratively, the computer program 53 may be partitioned into one or more modules that are stored in the memory 52 and executed by the processor 51 to accomplish the present application. The one or more modules may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution process of the computer program 53 in the terminal device. For example, the computer program 53 may be divided into a target focal position acquisition module, a spectrum allocation module, an utterance frequency calculation module, and a sound waveform generation module, and each module has the following specific functions:
the target focus position acquisition module is used for acquiring a target focus position and calculating the distance between each sound production unit and the target focus position;
the frequency spectrum distribution module is used for distributing a preset carrier frequency spectrum to each sound production unit according to a preset frequency spectrum distribution rule and the distance so as to enable sound waveforms emitted by each sound production unit according to the distributed sound production wavelength to form maximum peak superposition at the target focus position;
the sounding frequency calculation module is used for obtaining the sounding frequency corresponding to each sounding unit according to the sounding wavelength corresponding to each sounding unit;
and the sound waveform generating module is used for controlling the laser device to emit laser with the sound generating frequency corresponding to each sound generating unit to the sound generating units so as to knock the sound generating units to generate sound waveforms.
The terminal device may include, but is not limited to, a processor 51, a memory 52, and a computer program 53 stored in the memory 52. Those skilled in the art will appreciate that fig. 5 is merely an example of a terminal device and is not limiting and may include more or fewer components than shown, or some components may be combined, or different components, e.g., the terminal device may also include input output devices, network access devices, buses, etc.
The Processor 51 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 52 may be an internal storage unit of the terminal device, such as a hard disk or a memory of a focusing apparatus of a high-speed controllable wave. The memory 52 may also be an external storage device, such as a plug-in hard disk provided on a terminal device, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like. Further, the memory 52 may also include both an internal storage unit of the terminal device and an external storage device. The memory 52 is used to store the computer program and other programs and data necessary for the focusing method of the high-speed controllable wave. The memory 52 may also be used to temporarily store data that has been output or is to be output.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus/terminal device and method may be implemented in other ways. For example, the above-described embodiments of the apparatus/terminal device are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment. In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method embodiments may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain content that is subject to appropriate increase or decrease as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media does not include electrical carrier signals and telecommunications signals as is required by legislation and patent practice.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (10)
1. A focusing method of high-speed controllable waves is applied to a laser sounding device and is characterized in that the laser sounding device comprises a plurality of sounding units and a laser device;
the focusing method of the high-speed controllable wave comprises the following steps:
acquiring target focus positions, and calculating the distance between each sound production unit and the target focus positions;
distributing a preset carrier frequency spectrum to each sound production unit according to a preset frequency spectrum distribution rule and the distance so as to enable sound waveforms emitted from each sound production unit according to the distributed sound production wavelength to form maximum peak superposition at the target focus position;
obtaining the sounding frequency corresponding to each sounding unit according to the sounding wavelength corresponding to each sounding unit;
and controlling the laser device to emit laser with the sounding frequency corresponding to each sounding unit so as to knock each sounding unit to generate a sound waveform.
2. The method for focusing a high-speed controllable wave according to claim 1, wherein the allocating a preset carrier spectrum to each of the sound emitting units according to a preset spectrum allocation rule and the distance comprises:
distributing a plurality of sounding wavelengths which can divide all the distances in the wavelength range of the preset carrier spectrum to each sounding unit; the sounding wavelengths correspond to the sounding units one by one; and each two sounding wavelengths are relatively prime.
3. The method for focusing a high-speed controllable wave according to claim 2, wherein said allocating a plurality of said sound emission wavelengths capable of dividing all of said distances in a wavelength range of said preset carrier spectrum to each of said sound emission units, further comprises:
sequencing and numbering each sounding unit according to the distance value corresponding to each sounding unit;
and allocating the sounding wavelength with the shortest wavelength in the plurality of sounding wavelengths to the sounding units corresponding to the shortest distance in all the distances, and allocating the sounding wavelengths to the sounding units in sequence according to the sequence number so as to enable the sounding wavelengths corresponding to the sounding units arranged according to the sequence number to increase or decrease progressively.
4. The method for focusing high-speed controllable waves according to claim 1, wherein the controlling the laser device to emit laser light with a sounding frequency corresponding to each sounding unit so as to knock each sounding unit to generate a sound waveform comprises:
arranging the sounding units in a sequence from far to near according to the distance of the sounding units;
and controlling the laser device to emit the laser with the sounding frequency corresponding to each sounding unit one by one according to the arrangement sequence.
5. The method for focusing a high-speed controllable wave according to claim 1, wherein the obtaining a target focus position and calculating a distance between each sound emitting unit and the target focus position comprises:
and calculating the distance between each sound production unit and the target focus position according to a two-way merging algorithm.
6. The method according to claim 2, wherein the predetermined carrier spectrum has a wavelength range [0.0056, 3.4] in meters.
7. A high-speed controllable wave focusing apparatus, comprising:
the target focus position acquisition module is used for acquiring a target focus position and calculating the distance between each sound production unit and the target focus position;
the frequency spectrum distribution module is used for distributing a preset carrier frequency spectrum to each sound production unit according to a preset frequency spectrum distribution rule and the distance so as to enable sound waveforms emitted by each sound production unit according to the distributed sound production wavelength to form maximum peak superposition at the target focus position;
the sounding frequency calculation module is used for obtaining the sounding frequency corresponding to each sounding unit according to the sounding wavelength corresponding to each sounding unit;
and the sound waveform generating module is used for controlling the laser device to emit laser with the sound generating frequency corresponding to each sound generating unit so as to knock each sound generating unit to generate sound waveforms.
8. The apparatus for focusing high-speed steerable waves of claim 7, wherein the spectrum allocation module comprises:
the frequency spectrum allocation unit is used for allocating a plurality of sounding wavelengths which can divide all the distances completely within the wavelength range of the preset carrier frequency spectrum to each sounding unit; the sounding wavelengths correspond to the sounding units one by one; and each two sounding wavelengths are relatively prime.
9. A computer-readable storage medium storing a computer program, wherein the computer program is executed by a processor to implement the steps of the method for focusing a high-speed controllable wave according to any one of claims 1 to 6.
10. A terminal device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, the processor implementing the steps of the method for focusing a high-speed controllable wave according to any one of claims 1 to 6 when executing the computer program.
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