CN110061610B - Ultrasonic power supply system and control method thereof - Google Patents
Ultrasonic power supply system and control method thereof Download PDFInfo
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- CN110061610B CN110061610B CN201910397805.7A CN201910397805A CN110061610B CN 110061610 B CN110061610 B CN 110061610B CN 201910397805 A CN201910397805 A CN 201910397805A CN 110061610 B CN110061610 B CN 110061610B
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- 239000000523 sample Substances 0.000 claims description 12
- 230000008054 signal transmission Effects 0.000 claims description 11
- 238000004364 calculation method Methods 0.000 claims description 6
- 238000003384 imaging method Methods 0.000 abstract description 28
- 230000000694 effects Effects 0.000 abstract description 11
- 238000013461 design Methods 0.000 description 19
- 230000015654 memory Effects 0.000 description 18
- 238000004590 computer program Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 10
- 238000001514 detection method Methods 0.000 description 5
- 238000002604 ultrasonography Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 3
- 238000012285 ultrasound imaging Methods 0.000 description 3
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0012—Control circuits using digital or numerical techniques
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Ultra Sonic Daignosis Equipment (AREA)
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Abstract
The invention provides an ultrasonic power supply system and a control method thereof, wherein the method comprises the following steps: determining the working frequency of ultrasonic equipment; determining the switching frequency F of the digital switching power supply according to the working frequency SW The method comprises the steps of carrying out a first treatment on the surface of the The output switching frequency is F SW Is set to the target voltage of (a). The interference of the digital switching power supply to the working frequency of the ultrasonic equipment can be reduced, and the imaging effect of the ultrasonic imaging equipment is improved.
Description
Technical Field
The invention relates to the technical field of power supplies, in particular to an ultrasonic power supply system and a control method thereof.
Background
With the development of ultrasonic treatment technology, the application range of ultrasonic waves is becoming wider and wider. Ultrasonic imaging techniques are widely used for clinical diagnosis due to their advantages of real-time, inexpensive, non-invasive and non-ionizing radiation. In ultrasound imaging applications, the frequency of the signal of interest (the operating frequency of the ultrasound device) may vary from application to application, setting to setting.
Currently, ultrasonic imaging devices generally employ digital switching power supplies to provide electrical power.
However, since the digital switching power supply operates to generate a signal at a specific frequency, when the operating frequency of the digital switching power supply is close to or coincides with the frequency of the signal of interest in the ultrasound imaging application, the processing difficulty of the ultrasound signal is increased, and the imaging result is disturbed. When a plurality of digital power supply units exist in the ultrasonic imaging system, the frequency interference phenomenon generated by the digital switching power supply is more obvious.
Disclosure of Invention
The invention provides an ultrasonic power supply system and a control method thereof, which can reduce the interference of a digital switching power supply to the working frequency of ultrasonic equipment and improve the imaging effect of ultrasonic imaging equipment.
In a first aspect, an embodiment of the present invention provides an ultrasonic power supply system, including:
a processor for determining an operating frequency of the ultrasonic device;
a power supply controller for determining the switching frequency F of the digital switching power supply according to the working frequency SW ；
A digital switching power supply for outputting a switching frequency F SW Is set to the target voltage of (a).
In one possible design, the method further comprises: a digital pulse width modulator for providing a switching frequency F at the power supply controller SW Generating a control signal according to a preset pulse width PW; so that the digital switching power supply outputs a target voltage according to the control signal.
In one possible design, the preset pulse width PW is set by the power supply controller according to the input voltage V of the system requirement IN Output voltage V OUT And a switching frequency F SW The calculation formula is as follows:
PW＝V OUT /(V IN *F SW )。
in one possible design, the operating frequency includes: probe frequencyThe repetition frequency of ultrasonic signal transmission and the receiving frequency of ultrasonic signals; wherein the operating frequency is equal to the switching frequency F of the digital switching power supply SW Are not identical.
In one possible design, the method further comprises: an analog-to-digital converter; the analog-to-digital converter is specifically configured to:
sampling the target voltage output by the digital switching power supply in real time to obtain a sampling value of the target voltage;
and sending the sampling value of the target voltage to the power supply controller.
In one possible design, the power supply controller is further configured to:
determining an error voltage according to the sampling value of the target voltage and a preset reference voltage value;
and fine tuning the control signal generated by the digital pulse width modulator according to the error voltage so as to enable the target voltage output by the power supply to be matched with the preset reference voltage.
In one possible design, the method further comprises: an analog-to-digital converter and a compensation filter;
the analog-to-digital converter is used for sampling the target voltage output by the digital switching power supply in real time to obtain a sampling value of the target voltage, and sending the sampling value of the target voltage to the compensation filter;
the compensation filter is used for determining error voltage according to the sampling value of the target voltage and a preset reference voltage value; and adjusting the gain and the phase of the error voltage to obtain an adjusted error voltage, and sending the adjusted error voltage to the power supply controller.
In one possible design, the power supply controller is further configured to:
and fine tuning the control signal generated by the digital pulse width modulator according to the sampling value of the target voltage, a preset reference voltage value and the adjusted error voltage so as to enable the target voltage output by the digital switching power supply to be matched with the preset reference voltage.
In a second aspect, an embodiment of the present invention provides a control method of an ultrasonic power supply system, which is applied to the ultrasonic power supply system in any one of the first aspect, and the method includes:
determining the working frequency of ultrasonic equipment;
determining the switching frequency F of the digital switching power supply according to the working frequency SW ；
The output switching frequency is F SW Is set to the target voltage of (a).
In one possible design, the output switching frequency is F SW Comprises:
at the switching frequency F SW Generating a control signal according to a preset pulse width PW; and outputting a target voltage according to the control signal.
In one possible design, the predetermined pulse width PW is the input voltage V required by the system IN Output voltage V OUT And a switching frequency F SW The calculation formula is as follows:
PW＝V OUT /(V IN *F SW )。
in one possible design, the operating frequency includes: probe frequency, repetition frequency of ultrasonic signal transmission, and receiving frequency of ultrasonic signal; wherein the operating frequency is equal to the switching frequency F of the digital switching power supply SW Are not identical.
In one possible design, the method further comprises:
sampling the target voltage output by the digital switching power supply in real time to obtain a sampling value of the target voltage;
and sending the sampling value of the target voltage to the power supply controller.
In one possible design, the method further comprises:
determining an error voltage according to the sampling value of the target voltage and a preset reference voltage value;
and fine tuning the control signal generated by the digital pulse width modulator according to the error voltage so as to enable the target voltage output by the power supply to be matched with the preset reference voltage.
In one possible design, the method further comprises:
sampling the target voltage output by the digital switching power supply in real time to obtain a sampling value of the target voltage, and sending the sampling value of the target voltage to the compensation filter;
determining an error voltage according to the sampling value of the target voltage and a preset reference voltage value; and adjusting the gain and the phase of the error voltage to obtain an adjusted error voltage, and sending the adjusted error voltage to the power supply controller.
In one possible design, the method further comprises:
and fine tuning the control signal generated by the digital pulse width modulator according to the sampling value of the target voltage, a preset reference voltage value and the adjusted error voltage so as to enable the target voltage output by the digital switching power supply to be matched with the preset reference voltage.
In a third aspect, an embodiment of the present invention provides an ultrasonic power control system, including: a memory for storing a program; a processor configured to execute the program stored in the memory, and when the program is executed, to perform the control method of the ultrasonic power supply system according to any one of the second aspects.
In a fourth aspect, embodiments of the present invention provide a computer-readable storage medium comprising: a computer program which, when run on a computer, causes the computer to execute the control method of the ultrasonic power supply system according to any one of the second aspects.
In a fifth aspect, embodiments of the present invention provide a program product comprising: a computer program stored in a readable storage medium, from which at least one processor of a server can read, the at least one processor executing the computer program causing the server to execute the control method of the ultrasonic power supply system according to any one of the second aspects.
The ultrasonic power supply system and the control method thereof provided by the invention are characterized in that the working frequency of ultrasonic equipment is determinedA rate; determining the switching frequency F of the digital switching power supply according to the working frequency SW The method comprises the steps of carrying out a first treatment on the surface of the And outputting the target voltage. Therefore, the interference of the digital switching power supply to the working frequency of the ultrasonic equipment can be reduced, and the imaging effect of the ultrasonic imaging equipment is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.
FIG. 1 is a schematic diagram of an application scenario of the present invention;
fig. 2 is a flowchart of a control method of an ultrasonic power supply system according to a first embodiment of the present invention;
fig. 3 is a flowchart of a control method of an ultrasonic power supply system according to a second embodiment of the present invention;
fig. 4 is a flowchart of a control method of an ultrasonic power supply system according to a third embodiment of the present invention;
fig. 5 is a schematic structural diagram of an ultrasonic power supply system according to a fourth embodiment of the present invention;
fig. 6 is a schematic structural diagram of an ultrasonic power supply system according to a fifth embodiment of the present invention;
fig. 7 is a schematic structural diagram of an ultrasonic power supply system according to a sixth embodiment of the present invention;
fig. 8 is a schematic structural diagram of an ultrasonic power control system according to a seventh embodiment of the present invention.
Specific embodiments of the present disclosure have been shown by way of the above drawings and will be described in more detail below. These drawings and the written description are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the disclosed concepts to those skilled in the art by reference to specific embodiments.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The terms "first," "second," "third," "fourth" and the like in the description and in the claims and in the above drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented, for example, in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The technical scheme of the invention is described in detail below by specific examples. The following embodiments may be combined with each other, and some embodiments may not be repeated for the same or similar concepts or processes.
Fig. 1 is a schematic diagram of an application scenario of the present invention, as shown in fig. 1, in an ultrasound imaging application, frequencies of a signal of interest are various, and change according to a detection location and a detection setting. The frequencies of these signals of interest include: the working frequency of the probe, the repetition frequency of ultrasonic signal transmission, etc. Because the digital switching power supply works to generate signals with specific frequencies, when the working frequency of the digital switching power supply is close to or coincides with the frequency of a signal of interest in ultrasonic imaging application, the processing difficulty of ultrasonic signals is increased, and the processing of the ultrasonic signals is improvedThe imaging results cause interference. Therefore, the invention determines the switching frequency F of the digital switching power supply according to the working frequency of the ultrasonic equipment, namely the working frequency 11 of the probe, the repetition frequency 12 of ultrasonic signal transmission and the receiving frequency 13 of ultrasonic signal in the figure, and the ultrasonic power supply system 14 SW Then output the switching frequency F SW Is of (1) a voltage 15. The frequency of the target voltage 15 is different from the working frequency 11 of the probe, the repetition frequency 12 of ultrasonic signal transmission and the repetition frequency 13 of ultrasonic signal transmission, so that the interference of the digital switching power supply to the working frequency of the ultrasonic equipment can be reduced, and the imaging effect of the ultrasonic imaging equipment can be improved.
In the embodiment, the working frequency of the ultrasonic equipment is determined; determining the switching frequency F of the digital switching power supply according to the working frequency SW The method comprises the steps of carrying out a first treatment on the surface of the At the switching frequency F SW Generating a control signal according to a preset pulse width PW; the target voltage is output according to the control signal. Therefore, the interference of the digital switching power supply to the working frequency of the ultrasonic equipment can be reduced, and the imaging effect of the ultrasonic imaging equipment is improved.
The following describes the technical scheme of the present invention and how the technical scheme of the present application solves the above technical problems in detail with specific embodiments. The following embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments. Embodiments of the present invention will be described below with reference to the accompanying drawings.
Fig. 2 is a flowchart of a control method of an ultrasonic power supply system according to an embodiment of the present invention, as shown in fig. 2, the method in this embodiment may include:
s101, determining the working frequency of the ultrasonic equipment.
In this embodiment, the operating frequency of the ultrasonic apparatus is various, and changes with different detection positions and detection settings. The operating frequencies of these ultrasonic devices include: the working frequency of the probe, the repetition frequency of ultrasonic signal transmission and the repetition frequency of ultrasonic signal transmission. The processor determines the working frequency of the ultrasonic equipment according to the application and the setting of a user, and is used for finally determining the switching frequency of the digital switching power supplyF SW So that the working frequency is equal to the switching frequency F of the digital switching power supply SW Are not identical.
It should be noted that, the present embodiment is not limited to the type of the operating frequency of the ultrasonic device, and those skilled in the art may increase or decrease the type of the operating frequency of the ultrasonic device according to the actual situation. Meanwhile, the method for obtaining the working frequency of the ultrasonic equipment is not limited, and a person skilled in the art can reasonably select the method for obtaining the working frequency of the ultrasonic equipment according to actual conditions. For example, the operating frequency is obtained from the product specifications of the ultrasound device or probe, or by a third party detection instrument.
S102, determining the switching frequency F of the digital switching power supply according to the working frequency SW 。
In this embodiment, the processor sends the operating frequency to the power controller, and the power controller determines the switching frequency F of the digital switching power supply according to the operating frequency SW . Wherein, the switching frequency F of the digital switching power supply SW Different from any one of the operating frequencies.
In one possible design, the predetermined pulse width PW is set by the power controller according to the input voltage V of the system requirement IN Output voltage V OUT And a switching frequency F SW The calculation formula is as follows:
PW＝V OUT /(V IN *F SW )。
s103, outputting the switching frequency of F SW Is set to the target voltage of (a).
In this embodiment, the digital pulse width modulator is based on the switching frequency F provided by the power supply controller SW Generating a control signal by a preset pulse width PW; so that the digital switching power supply outputs a target voltage according to the control signal.
In this embodiment, the digital power switch outputs the switching frequency F according to the control signal generated by the digital pulse width modulator SW Is provided for supplying power to the ultrasound device.
In this embodiment, the operating frequency of the ultrasonic device is determinedThe method comprises the steps of carrying out a first treatment on the surface of the Determining the switching frequency F of the digital switching power supply according to the working frequency SW The method comprises the steps of carrying out a first treatment on the surface of the At the switching frequency F SW Generating a control signal according to a preset pulse width PW; the target voltage is output according to the control signal. Therefore, the interference of the digital switching power supply to the working frequency of the ultrasonic equipment can be reduced, and the imaging effect of the ultrasonic imaging equipment is improved.
Fig. 3 is a flowchart of a control method of an ultrasonic power supply system according to a second embodiment of the present invention, as shown in fig. 3, the method in this embodiment may include:
s201, determining the working frequency of the ultrasonic equipment.
S202, determining the switching frequency F of the digital switching power supply according to the working frequency SW 。
S203, the output switching frequency is F SW Is set to the target voltage of (a).
In this embodiment, the specific implementation process and technical principle of step S201 to step S203 refer to the related descriptions in step S101 to step S103 in the method shown in fig. 2, and are not described herein again.
S204, sampling the target voltage output by the digital switching power supply in real time to obtain a sampling value of the target voltage.
In this embodiment, the target voltage output by the digital switching power supply is sampled in real time through the analog-to-digital converter, so as to obtain a sampling value of the target voltage, and the sampling value is sent to the power supply controller.
S205, determining an error voltage according to the sampling value of the target voltage and a preset reference voltage value.
In this embodiment, the power supply controller determines the error voltage according to the sampling value of the target voltage and a preset reference voltage value.
S206, fine tuning the control signal generated by the digital pulse width modulator according to the error voltage so that the target voltage output by the power supply is matched with the preset reference voltage.
In this embodiment, the power supply controller performs fine adjustment on the control signal generated by the digital pulse width modulator according to the error voltage, so that the target voltage output by the power supply is matched with the preset reference voltage, thereby realizing closed-loop control and improving the accuracy of the output target voltage.
In the embodiment, the working frequency of the ultrasonic equipment is determined; determining the switching frequency F of the digital switching power supply according to the working frequency SW The method comprises the steps of carrying out a first treatment on the surface of the At the switching frequency F SW Generating a control signal according to a preset pulse width PW; the target voltage is output according to the control signal. Therefore, the interference of the digital switching power supply to the working frequency of the ultrasonic equipment can be reduced, and the imaging effect of the ultrasonic imaging equipment is improved.
In addition, the implementation obtains a sampling value of the target voltage by sampling the target voltage output by the digital switching power supply in real time; determining an error voltage according to a sampling value of the target voltage and a preset reference voltage value; and fine tuning the control signal generated by the digital pulse width modulator according to the error voltage so as to enable the target voltage output by the power supply to be matched with the preset reference voltage. Therefore, the closed-loop control of the target voltage output by the digital switching power supply is realized, and the accuracy of the target voltage output by the digital switching power supply is improved.
Fig. 4 is a flowchart of a control method of an ultrasonic power supply system according to a third embodiment of the present invention, as shown in fig. 4, the method in this embodiment may include:
s301, determining the working frequency of the ultrasonic equipment.
S302, determining the switching frequency F of the digital switching power supply according to the working frequency SW 。
S303, output switching frequency is F SW Is set to the target voltage of (a).
In this embodiment, the specific implementation process and technical principle of step S301 to step S303 refer to the related descriptions in step S101 to step S103 in the method shown in fig. 2, and are not described herein again.
S304, sampling the target voltage output by the digital switching power supply in real time to obtain a sampling value of the target voltage.
In this embodiment, the target voltage output by the digital switching power supply is sampled in real time by the analog-to-digital converter, so as to obtain a sampling value of the target voltage, and the sampling value of the target voltage is sent to the compensation filter.
S305, determining an error voltage according to a sampling value of the target voltage and a preset reference voltage value; and adjusting the gain and the phase of the error voltage to obtain an adjusted error voltage.
In the embodiment, the error voltage is determined by the compensation filter according to the sampling value of the target voltage and a preset reference voltage value; and adjusting the gain and the phase of the error voltage to obtain an adjusted error voltage, and sending the adjusted error voltage to the power supply controller.
S306, fine tuning is carried out on the control signal generated by the digital pulse width modulator according to the sampling value of the target voltage, the preset reference voltage value and the adjusted error voltage, so that the target voltage output by the digital switching power supply is matched with the preset reference voltage.
In this embodiment, the power supply controller performs fine adjustment on the control signal generated by the digital pulse width modulator according to the sampling value of the target voltage, the preset reference voltage value and the adjusted error voltage, so that the target voltage output by the digital switching power supply is matched with the preset reference voltage. Thereby realizing closed-loop control and improving the accuracy of the output target voltage.
In the embodiment, the working frequency of the ultrasonic equipment is determined; determining the switching frequency F of the digital switching power supply according to the working frequency SW The method comprises the steps of carrying out a first treatment on the surface of the At the switching frequency F SW Generating a control signal according to a preset pulse width PW; the target voltage is output according to the control signal. Therefore, the interference of the digital switching power supply to the working frequency of the ultrasonic equipment can be reduced, and the imaging effect of the ultrasonic imaging equipment is improved.
In addition, the implementation obtains a sampling value of the target voltage by sampling the target voltage output by the digital switching power supply in real time; determining an error voltage according to a sampling value of the target voltage and a preset reference voltage value; the gain and the phase of the error voltage are adjusted to obtain an adjusted error voltage; and fine tuning the control signal generated by the digital pulse width modulator according to the sampling value of the target voltage, a preset reference voltage value and the adjusted error voltage so as to enable the target voltage output by the digital switching power supply to be matched with the preset reference voltage. Therefore, the closed-loop control of the target voltage output by the digital switching power supply is realized, and the accuracy of the target voltage output by the digital switching power supply is improved.
Fig. 5 is a schematic structural diagram of an ultrasonic power supply system according to a fourth embodiment of the present invention, as shown in fig. 5, the ultrasonic power supply system in this embodiment may include:
a processor 31 for determining the operating frequency of the ultrasound device;
a power supply controller 32 for determining the switching frequency F of the digital switching power supply according to the operating frequency SW ；
A digital switching power supply 34 for outputting a switching frequency F SW Is set to the target voltage of (a).
Optionally, the method may further include: a digital pulse width modulator 33 for providing a switching frequency F at the power supply controller SW Generating a control signal according to a preset pulse width PW; so that the digital switching power supply 34 is used to output a target voltage according to the control signal.
It should be noted that, the processor 31, the power controller 32, and the digital pulse width modulator 33 in this embodiment may be independent structures or integrated structures. When the processor 31, the power supply controller 32, and the digital pulse width modulator 33 are independent structures, the processor 31, the power supply controller 32, and the digital pulse width modulator 33 may be connected by bus coupling.
In one possible design, the predetermined pulse width PW is set by the power controller according to the input voltage V of the system requirement IN Output voltage V OUT And a switching frequency F SW The calculation formula is as follows:
PW＝V OUT /(V IN *F SW )。
in one possible design, the operating frequency includes: probe frequency, repetition frequency of ultrasonic signal transmission, and receiving frequency of ultrasonic signal; wherein, the working frequency and the switching frequency F of the digital switching power supply SW Are not identical.
The embodiment is generalDetermining the working frequency of the ultrasonic equipment; determining the switching frequency F of the digital switching power supply according to the working frequency SW The method comprises the steps of carrying out a first treatment on the surface of the At the switching frequency F SW Generating a control signal according to a preset pulse width PW; the target voltage is output according to the control signal. Therefore, the interference of the digital switching power supply to the working frequency of the ultrasonic equipment can be reduced, and the imaging effect of the ultrasonic imaging equipment is improved.
The technical scheme in the method shown in fig. 2 may be executed in the ultrasonic power supply system of this embodiment, and the specific implementation process and technical principle thereof refer to the related description in the method shown in fig. 2, which is not repeated here.
Fig. 6 is a schematic structural diagram of an ultrasonic power supply system according to a fifth embodiment of the present invention, as shown in fig. 6, where the ultrasonic power supply system according to the present embodiment may further include, on the basis of the apparatus shown in fig. 5:
an analog-to-digital converter 35; the analog-to-digital converter 35 is specifically configured to:
sampling the target voltage output by the digital switching power supply in real time to obtain a sampling value of the target voltage;
and sending the sampling value of the target voltage to a power supply controller.
In one possible design, the power supply controller 32 is also configured to:
determining an error voltage according to a sampling value of the target voltage and a preset reference voltage value;
and fine tuning the control signal generated by the digital pulse width modulator according to the error voltage so as to enable the target voltage output by the power supply to be matched with the preset reference voltage.
In the embodiment, the working frequency of the ultrasonic equipment is determined; determining the switching frequency F of the digital switching power supply according to the working frequency SW The method comprises the steps of carrying out a first treatment on the surface of the At the switching frequency F SW Generating a control signal according to a preset pulse width PW; the target voltage is output according to the control signal. Therefore, the interference of the digital switching power supply to the working frequency of the ultrasonic equipment can be reduced, and the imaging effect of the ultrasonic imaging equipment is improved.
In addition, the implementation obtains a sampling value of the target voltage by sampling the target voltage output by the digital switching power supply in real time; determining an error voltage according to a sampling value of the target voltage and a preset reference voltage value; and fine tuning the control signal generated by the digital pulse width modulator according to the error voltage so as to enable the target voltage output by the power supply to be matched with the preset reference voltage. Therefore, the closed-loop control of the target voltage output by the digital switching power supply is realized, and the accuracy of the target voltage output by the digital switching power supply is improved.
The technical solutions in the methods shown in fig. 2 and fig. 3 may be executed in the ultrasonic power supply system of the present embodiment, and specific implementation processes and technical principles thereof are described with reference to the related descriptions in the methods shown in fig. 2 and fig. 3, which are not repeated here.
Fig. 7 is a schematic structural diagram of an ultrasonic power supply system according to a sixth embodiment of the present invention, as shown in fig. 7, where the ultrasonic power supply system according to the present embodiment may further include, on the basis of the apparatus shown in fig. 5:
the analog-to-digital converter 35 is configured to sample the target voltage output by the digital switching power supply in real time, obtain a sampling value of the target voltage, and send the sampling value of the target voltage to the compensation filter;
a compensation filter 36 for determining an error voltage from the sampled value of the target voltage, a preset reference voltage value; and adjusting the gain and the phase of the error voltage to obtain an adjusted error voltage, and sending the adjusted error voltage to the power supply controller.
In one possible design, the power supply controller 32 is also configured to:
and fine tuning the control signal generated by the digital pulse width modulator according to the sampling value of the target voltage, a preset reference voltage value and the adjusted error voltage so as to enable the target voltage output by the digital switching power supply to be matched with the preset reference voltage.
In the embodiment, the working frequency of the ultrasonic equipment is determined; determining the switching frequency F of the digital switching power supply according to the working frequency SW The method comprises the steps of carrying out a first treatment on the surface of the At the switching frequency F SW Generating a control signal according to a preset pulse width PW; the target voltage is output according to the control signal. Thereby reducing the ultra-power of the digital switch power supplyThe interference of the working frequency of the acoustic equipment improves the imaging effect of the ultrasonic imaging equipment.
In addition, the implementation obtains a sampling value of the target voltage by sampling the target voltage output by the digital switching power supply in real time; determining an error voltage according to a sampling value of the target voltage and a preset reference voltage value; the gain and the phase of the error voltage are adjusted to obtain an adjusted error voltage; and fine tuning the control signal generated by the digital pulse width modulator according to the sampling value of the target voltage, a preset reference voltage value and the adjusted error voltage so as to enable the target voltage output by the digital switching power supply to be matched with the preset reference voltage. Therefore, the closed-loop control of the target voltage output by the digital switching power supply is realized, and the accuracy of the target voltage output by the digital switching power supply is improved.
The technical solutions in the methods shown in fig. 2 and fig. 4 may be executed in the ultrasonic power supply system of the present embodiment, and specific implementation processes and technical principles thereof are described in the related descriptions in the methods shown in fig. 2 and fig. 4, which are not repeated here.
Fig. 8 is a schematic structural diagram of an ultrasonic power control system according to a seventh embodiment of the present invention, as shown in fig. 8, an ultrasonic power control system 40 in this embodiment may include:
a memory 41 for storing a program; the memory 41 may include a volatile memory (english: volatile memory), such as a random-access memory (RAM), such as a static random-access memory (SRAM), a double data rate synchronous dynamic random-access memory (DDR SDRAM), etc.; the memory may also include a non-volatile memory (English) such as a flash memory (English). The memory 41 is used to store a computer program (e.g., an application program, a functional module, etc. that implements the above-described method), computer instructions, etc., which may be stored in one or more memories 41 in a partitioned manner. And the above-described computer programs, computer instructions, data, etc. may be invoked by the processor 42.
A processor 42 for executing a computer program stored in the memory 41 to implement the steps of the method according to the above-described embodiment.
Reference may be made in particular to the description of the embodiments of the method described above.
The processor 41 and the memory 42 may be separate structures or may be integrated structures integrated together. When the processor 41 and the memory 42 are separate structures, the memory 42 and the processor 41 may be coupled and connected by a bus 43.
The server in this embodiment may execute the technical solutions in the methods shown in fig. 2, 3 and 4, and specific implementation processes and technical principles thereof refer to related descriptions in the methods shown in fig. 2, 3 and 4, which are not repeated herein.
The embodiment of the application also provides a program product, which comprises: and a computer program stored in a readable storage medium, the computer program being readable from the readable storage medium by at least one processor of the server, the at least one processor executing the computer program causing the server to perform the method of controlling the ultrasonic power supply system described above.
In addition, the embodiment of the application further provides a computer-readable storage medium, in which computer-executable instructions are stored, when the at least one processor of the user equipment executes the computer-executable instructions, the user equipment performs the above possible methods.
Among them, computer-readable media include computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. In addition, the ASIC may reside in a user device. The processor and the storage medium may reside as discrete components in a communication device.
Those of ordinary skill in the art will appreciate that: all or part of the steps for implementing the method embodiments described above may be performed by hardware associated with program instructions. The foregoing program may be stored in a computer readable storage medium. The program, when executed, performs steps including the method embodiments described above; and the aforementioned storage medium includes: various media that can store program code, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the 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 scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (9)
1. An ultrasonic power supply system, comprising:
a processor for determining an operating frequency of the ultrasonic device; the operating frequency includes: probe frequency, repetition frequency of ultrasonic signal transmission, and receiving frequency of ultrasonic signal;
a power supply controller for determining the switching frequency F of the digital switching power supply according to the working frequency SW The method comprises the steps of carrying out a first treatment on the surface of the The working frequency and the switching frequency F of the digital switching power supply SW Different;
a digital switching power supply for outputting a switching frequency F SW Is set to the target voltage of (1);
a digital pulse width modulator for providing a switching frequency F at the power supply controller SW Generating a control signal according to a preset pulse width PW so that the digital switching power supply outputs a target voltage according to the control signal;
the preset pulse width PW is input power from a power supply controller according to system requirementsPressure V IN Output voltage V OUT And a switching frequency F SW The calculation formula is as follows:
PW＝V OUT (V IN *F SW )。
2. the system of claim 1, further comprising: an analog-to-digital converter; the analog-to-digital converter is specifically configured to:
sampling the target voltage output by the digital switching power supply in real time to obtain a sampling value of the target voltage;
and sending the sampling value of the target voltage to the power supply controller.
3. The system of claim 2, wherein the power supply controller is further configured to:
determining an error voltage according to the sampling value of the target voltage and a preset reference voltage value;
and fine tuning the control signal generated by the digital pulse width modulator according to the error voltage so as to enable the target voltage output by the power supply to be matched with the preset reference voltage.
4. The system of claim 1, further comprising: an analog-to-digital converter and a compensation filter;
the analog-to-digital converter is used for sampling the target voltage output by the digital switching power supply in real time to obtain a sampling value of the target voltage, and sending the sampling value of the target voltage to the compensation filter;
the compensation filter is used for determining error voltage according to the sampling value of the target voltage and a preset reference voltage value; and adjusting the gain and the phase of the error voltage to obtain an adjusted error voltage, and sending the adjusted error voltage to the power supply controller.
5. The system of claim 4, wherein the power supply controller is further configured to:
and fine tuning the control signal generated by the digital pulse width modulator according to the sampling value of the target voltage, a preset reference voltage value and the adjusted error voltage so as to enable the target voltage output by the digital switching power supply to be matched with the preset reference voltage.
6. A control method of an ultrasonic power supply system, characterized by being applied to the ultrasonic power supply system according to any one of claims 1 to 5, the method comprising:
determining the working frequency of ultrasonic equipment;
determining the switching frequency F of the digital switching power supply according to the working frequency SW ；
The output switching frequency is F SW Is set to the target voltage of (a).
7. The method of claim 6, wherein the output switching frequency is F SW Comprises:
at the switching frequency F SW Generating a control signal according to a preset pulse width PW; and outputting a target voltage according to the control signal.
8. The method of claim 7, wherein the step of determining the position of the probe is performed,
the predetermined pulse width PW is defined by the input voltage V required by the system IN Output voltage V OUT And a switching frequency F SW The calculation formula is as follows:
PW＝V OUT (V IN *F SW )。
9. the method of claim 6, wherein the operating frequency comprises: probe frequency, repetition frequency of ultrasonic signal transmission, and receiving frequency of ultrasonic signal; wherein the operating frequency is equal to the switching frequency F of the digital switching power supply SW Are not identical.
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