CN114221525B - Method and device for processing output power of transducer and ultrasonic equipment - Google Patents
Method and device for processing output power of transducer and ultrasonic equipment Download PDFInfo
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- CN114221525B CN114221525B CN202111545241.0A CN202111545241A CN114221525B CN 114221525 B CN114221525 B CN 114221525B CN 202111545241 A CN202111545241 A CN 202111545241A CN 114221525 B CN114221525 B CN 114221525B
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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
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
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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
- H02M1/32—Means for protecting converters other than automatic disconnection
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Abstract
The invention discloses a method and a device for processing output power of a transducer and ultrasonic equipment. Wherein the method comprises the following steps: sweep the frequency of the transducer by adopting a preset driving mode, and determining the resonance point of the transducer under the target load condition; adjusting a preset driving mode of the transducer according to the resonance point; and controlling the output power of the transducer to reach the target output power according to the adjusted preset driving mode. The invention solves the technical problems that the driving mode in the prior art cannot be suitable for complex load environments and the overload protection of the power supply is easy to be caused if the power is too high in the frequency sweeping process.
Description
Technical Field
The invention relates to the technical field of ultrasonic waves, in particular to a method and a device for processing output power of a transducer and ultrasonic equipment.
Background
With the rapid development of ultrasonic technology, products to which ultrasonic technology is applied are increasingly widespread, such as ultrasonic cleaners, ultrasonic welders, ultrasonic humidifiers, and the like. The ultrasonic driving controller is an important component of the system and is used for converting commercial power into a high-frequency alternating current signal matched with the ultrasonic transducer to drive the ultrasonic transducer to work. For energy saving and ultrasonic effect, the ultrasonic transducer is ensured to work at a resonance frequency point, especially a battery-powered product, so that the ultrasonic output power reaches the maximum under the precondition of limited input power, and the efficiency is optimal. For example, the battery-powered ultrasonic cleaner works at the resonance point to ensure the battery to last long and the cleaning effect to be optimal to the greatest extent; the driving frequency of the controller is required to be matched with the resonant frequency of the transducer, but the resonant frequency of the transducer is strongly related to the natural frequency of the transducer, the load environment (the water level, the amount of the cleaned object, the size of the container and the like).
FIG. 1 is a schematic diagram of a transducer control system according to the prior art, as shown in FIG. 1, a multipoint control unit (Multi Control Unit, MCU) outputs a pulse width modulated (Pulse Width Modulation, PWM) drive signal to a drive module, which drives a power module according to the PWM signal, where the power module is an H-bridge unipolar integrated circuit; the power supply supplies power to the power module; the power module is connected with the transducer and drives the transducer to oscillate at high frequency; the detection module is connected with the transducer, and the working current and the working voltage of the transducer are sampled, amplified and processed to calculate the output power for the MCU. The MCU adjusts the duty ratio of the PWM driving signal according to the output power so that the output power reaches the target power to achieve the cleaning effect. However, the controller in the prior art generally either fixes a certain driving frequency or the driving frequency is continuously and periodically changed during operation, and cannot automatically adapt to various load environments. In addition, in the existing frequency sweeping technology, a target driving output signal is generally used for sweeping, and if the power is overlarge in the frequency sweeping process, the overload protection of a power supply can be caused.
In view of the above problems, no effective solution has been proposed at present.
Disclosure of Invention
The embodiment of the invention provides a method and a device for processing output power of a transducer and ultrasonic equipment, which at least solve the technical problems that a driving mode in the prior art cannot be suitable for a complex load environment and overload protection of a power supply is easily caused if the power is too high in a frequency sweeping process.
According to an aspect of an embodiment of the present invention, there is provided a method for processing output power of a transducer, including: sweep the frequency of the transducer by adopting a preset driving mode, and determining the resonance point of the transducer under the target load condition; adjusting a preset driving mode of the transducer according to the resonance point; and controlling the output power of the energy converter to reach the target output power according to the adjusted preset driving mode.
Optionally, sweep frequency of the transducer by adopting a preset driving mode to determine a resonance point of the transducer under a target load condition includes: when the transducer is swept by using the preset driving mode, judging whether a feedback current value of the transducer under the target load condition is the maximum value or not; if the feedback current value is the maximum value, determining that the current frequency is the resonance point under the target load condition; and if the feedback current value is not the maximum value, continuing to sweep the frequency by using the preset driving signal.
Optionally, before the transducer is swept using the preset driving mode, the method further includes: the frequency range is determined and the minimum spacing frequency and spacing time are set.
Optionally, the preset driving mode includes at least one of the following: the driving circuit comprises a preset driving signal duty ratio and a preset power supply voltage, wherein the preset driving signal duty ratio is the minimum duty ratio of the driving signal, and the preset power supply voltage is a first power supply voltage.
Optionally, adjusting the driving mode of the transducer according to the resonance point includes: and adjusting the duty ratio of the preset driving signal and/or the preset power supply voltage.
Optionally, according to the adjusted preset driving mode, controlling the output power of the transducer to reach the target output power includes: and if the preset driving mode comprises the preset driving signal duty ratio, increasing the duty ratio of the preset driving signal, and controlling the output power of the transducer to reach the target output power according to the increased preset driving signal duty ratio.
Optionally, according to the adjusted preset driving mode, controlling the output power of the transducer to reach the target output power includes: and under the condition that the preset driving mode comprises the preset power supply voltage, switching the first power supply voltage into a second power supply voltage, and controlling the output power of the energy converter to reach the target output power according to the second power supply voltage, wherein the first power supply voltage is smaller than the second power supply voltage.
According to another aspect of the embodiment of the present invention, there is also provided a processing apparatus for output power of a transducer, including: the determining module is used for sweeping the transducer in a preset driving mode and determining a resonance point of the transducer under a target load condition; the adjusting module is used for adjusting a preset driving mode of the transducer according to the resonance point; and the control module is used for controlling the output power of the energy converter to reach the target output power according to the adjusted preset driving mode.
According to another aspect of the embodiment of the present invention, there is further provided an ultrasonic apparatus, including a controller, and a memory and a transducer connected to the controller, respectively, wherein the memory includes a stored program, and the controller controls the transducer to execute the method for processing the output power of the transducer according to any one of the above when the program runs.
According to another aspect of the embodiments of the present invention, there is further provided a processor, configured to execute a program, where the program executes the method for processing the output power of the transducer according to any one of the above.
In the embodiment of the invention, a preset driving mode is adopted to sweep the frequency of the transducer, and the resonance point of the transducer under the condition of target load is determined; adjusting a preset driving mode of the transducer according to the resonance point; according to the preset driving mode after adjustment, the output power of the energy converter is controlled to reach the target output power, the energy converter is swept through the preset driving mode, the resonance point under the current energy converter and the load condition is found, the preset driving mode of the energy converter is adjusted at the resonance point, the output power of the energy converter reaches the target output power, the resonance frequency of the energy converter and the load environment in a self-adaptive mode is achieved, the aim of achieving the optimal working efficiency point is fulfilled, the technical effect of effectively avoiding the abnormality of power overload protection caused by overlarge power in the sweeping process is achieved, and the technical problems that the driving mode in the prior art cannot be applied to the complex load environment and the power overload protection is easily caused if the overlarge power occurs in the sweeping process are solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
FIG. 1 is a schematic diagram of a transducer control system according to the prior art;
FIG. 2 is a flow chart of a method of processing transducer output power according to an embodiment of the invention;
FIG. 3 is a flow chart of a method of processing transducer output power in accordance with an alternative embodiment of the present invention;
FIG. 4 is a schematic diagram of a transducer control system according to an alternative embodiment of the present invention;
FIG. 5 is a schematic diagram of another transducer control system according to an alternative embodiment of the present invention;
fig. 6 is a schematic diagram of a processing device for transducer output power according to an embodiment of the invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures 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 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.
Example 1
In accordance with an embodiment of the present invention, there is provided an embodiment of a method of processing transducer output power, it being noted that the steps illustrated in the flowchart of the figures may be performed in a computer system, such as a set of computer executable instructions, and, although a logical sequence is illustrated in the flowchart, in some cases, the steps illustrated or described may be performed in a different order than that illustrated herein.
Fig. 2 is a flow chart of a method of processing output power of a transducer according to an embodiment of the invention, as shown in fig. 2, the method comprising the steps of:
step S202, sweep the frequency of the transducer by adopting a preset driving mode, and determining the resonance point of the transducer under the target load condition;
In an alternative embodiment, the preset driving mode includes at least one of the following: the driving circuit comprises a preset driving signal duty ratio and a preset power supply voltage, wherein the preset driving signal duty ratio is the minimum duty ratio of the driving signal, and the preset power supply voltage is the first power supply voltage.
In an embodiment of the present invention, the preset power supply voltage includes a first power supply voltage and a second power supply voltage, and the first power supply voltage is smaller than the second power supply voltage.
Step S204, adjusting a preset driving mode of the transducer according to the resonance point;
in an alternative embodiment, adjusting the driving mode of the transducer according to the resonance point includes: the preset drive signal duty cycle and/or the preset supply voltage are adjusted.
In the embodiment of the invention, the duty ratio of the preset driving signal can be adjusted at the resonance point, namely, the duty ratio of the preset driving signal is increased; in addition, the preset supply voltage may be adjusted at the resonance point, i.e. the first supply voltage is switched to the second supply voltage. By means of this embodiment, a fast adjustment of the driving mode of the transducer can be achieved at the resonance point.
Step S208, controlling the output power of the transducer to reach the target output power according to the adjusted preset driving mode.
Through the steps, the energy converter can be swept through the preset driving mode, the resonance point under the current energy converter and the load condition can be found, the preset driving mode of the energy converter is adjusted at the resonance point to enable the output power of the energy converter to reach the target output power, the resonance frequencies of the energy converters and the load environments are self-adaptive, the purpose of achieving the optimal working efficiency point is achieved, the technical effect of effectively avoiding the abnormality of power overload protection caused by overlarge power in the sweeping process is achieved, and the technical problems that the driving mode in the prior art cannot be suitable for a complex load environment and the power overload protection is easily caused if the overlarge power occurs in the sweeping process are solved.
In an alternative embodiment, the method for determining the resonance point of the transducer under the target load condition by sweeping the transducer in a preset driving mode includes: when the transducer is swept by using a preset driving mode, judging whether a feedback current value of the transducer under a target load condition is the maximum value or not; if the feedback current value is the maximum value, determining the current frequency as a resonance point under the target load condition; if the feedback current value is not the maximum value, the preset driving signal is continuously used for scanning frequency.
In the implementation process, the frequency range of the frequency sweep of the transducer needs to be determined, the minimum interval frequency and the interval time are set, then the frequency sweep of the transducer is performed by using a preset driving mode, further, whether the feedback current value of the transducer under the target load condition is the maximum value is judged, if the feedback current value is the maximum value, the resonance point under the target load condition can be determined, otherwise, if the feedback current value is not the maximum value, the frequency sweep is performed by using a preset driving signal continuously, and the judgment flow is executed. By the method, the resonance point under the most suitable target load condition can be found according to the preset driving mode.
In an alternative embodiment, controlling the output power of the transducer to reach the target output power according to the adjusted preset driving mode includes: and when the preset driving mode comprises the preset driving signal duty ratio, increasing the duty ratio of the preset driving signal, and controlling the output power of the transducer to reach the target output power according to the increased preset driving signal duty ratio. In this embodiment of the present invention, the output power of the transducer may be controlled to reach the target output power by increasing the duty ratio of the preset driving signal and according to the increased duty ratio of the preset driving signal.
In an alternative embodiment, controlling the output power of the transducer to reach the target output power according to the adjusted preset driving mode includes: and under the condition that the preset driving mode comprises the preset power supply voltage, switching the first power supply voltage into the second power supply voltage, and controlling the output power of the transducer to reach the target output power according to the second power supply voltage, wherein the first power supply voltage is smaller than the second power supply voltage. In this embodiment of the invention, the first supply voltage may be switched to the second supply voltage, and the output power of the transducer may be controlled to reach the target output power in accordance with the second supply voltage. It should be noted that, in the implementation process, increasing the duty ratio of the preset driving signal and switching the first power supply voltage to the second power supply voltage may be performed synchronously.
An alternative embodiment of the present invention will be described in detail below.
Fig. 3 is a flowchart of a method for processing output power of a transducer according to an alternative embodiment of the present invention, as shown in fig. 3, in which a sweep mode is first started every time a power is turned on, a driving frequency is gradually changed within a set range during the sweep mode, and when a feedback signal is detected to be maximum, a resonance frequency point f0 in a current working environment is determined at this time. Entering a normal working mode, fixing the output ultrasonic driving frequency at a resonant frequency point f0 recorded in a sweep frequency mode, and meanwhile, increasing a driving signal to ensure normal output of ultrasonic oscillation power.
FIG. 4 is a schematic diagram of a transducer control system according to an alternative embodiment of the present invention, as shown in FIG. 4, the first power supply and the second power supply respectively represent different output voltages, and in the sweep mode and the normal operation mode, one of the power supplies respectively supplies power to the power module; the two paths of power supplies are respectively controlled by the MCU. The first detection module and the second detection module have different amplification factors, and in a sweep frequency mode and a normal working mode, voltage and current signals of the energy converter are respectively collected by one of the detection modules; the two paths of detection modules are also respectively controlled by the MCU.
Fig. 5 is a schematic diagram of another transducer control system according to an alternative embodiment of the present invention, as shown in fig. 5, similar to fig. 4, with the difference that the power supply in this block diagram is a fixed output voltage power supply.
The specific working principle and working process are as follows:
for example, the ultrasonic cleaner powered by the battery can influence the ultrasonic output power due to factors such as the liquid level, the size of the container, the amount of the cleaned objects, and the like.
Embodiment 1: the specific working process of the fixed power supply voltage is as follows
Sweep frequency mode: when the power-on device is started each time, a sweep frequency mode is entered, the duty ratio D of a PWM driving signal output by the MCU is a minimum value Dmin, and the frequency f of PWM is gradually changed between fmin and fmax at a minimum interval frequency and interval time set by a program. In the sweep frequency mode, the detection module works, because the output power of the transducer is related to the driving frequency f and the duty ratio D besides the power supply voltage, the closer f is to the resonance frequency point, the larger D is, the larger the power is, and the larger the voltage and the current fed back to the detection module by the transducer are; when the sweep frequency mode D is set to Dmin, the voltage and the current received by the detection module are correspondingly minimum, and in order to ensure that the sampled and amplified signal can meet the detection size for the MCU, the detection module I with larger amplification factor works at the moment, and the detection module II with small amplification factor is closed.
In the frequency sweeping process, D is fixed as Dmin, f is scanned between fmin and fmax, and the MCU compares the voltage and current signals fed back by the detection module I; when the maximum value occurs, locking a resonance frequency point f0 when the current frequency is in the current load environment, recording f0 by the MCU, and ending the sweep frequency mode.
Normal operation mode: the PWM driving signal f is fixed at f0, D is gradually increased by Dmin, and meanwhile, the detection module is switched to the detection module II to work; the MCU calculates whether the output power of the transducer reaches the preset target power according to the voltage and current signals fed back by the second detection module, and D stops increasing when the output power reaches the target power; as the output power fluctuates around the target power, D decreases or increases accordingly.
Embodiment 2: the specific working process of the power supply voltage change is as follows:
The differences from embodiment 1 are as follows: the power module may be powered by two different voltages; one of the first power supply and the second power supply is used for supplying power in a normal working mode, and the other power supply is used for supplying power in a sweep frequency mode; the power supply voltage in the sweep frequency mode is lower than that in the normal working mode; the two power supplies may be different voltages output from one power supply. Changing the supply voltage of the power module on the basis of embodiment 1 also changes the output power of the transducer, the smaller the supply voltage, the smaller the output power.
For example, in the sweep frequency mode, the MCU controls the first power supply to supply power to the power module, and in the normal working mode, the MCU is switched to the second power supply to supply power to the power module. The process of determining the resonance frequency point f0 is the same as that of embodiment 1.
Through the control process, the resonance point matching is realized by adopting a small driving signal (small duty ratio or low power supply voltage) namely with small power in the frequency sweep mode, and the power can be controlled in a small range during the frequency sweep; after entering a normal working mode, the driving signal is increased, and the power is gradually increased to the target power; the whole power can be controlled, and the overload protection of the power supply caused by overlarge power due to unmatched resonance points can be avoided.
It should be noted that the driving frequency of the controller can be automatically adjusted according to different transducers and different load environments, so that the transducers can always work at the optimal efficiency point, and the ultrasonic output power is maximum; when the frequency of the transducer is automatically matched, the transducer is driven by a small signal, so that overload protection of a power supply (a battery pack) caused by overlarge power of direct driving is avoided.
Example 2
According to another aspect of the embodiment of the present invention, there is further provided a device for processing output power of a transducer, fig. 6 is a schematic diagram of the device for processing output power of a transducer according to an embodiment of the present invention, and as shown in fig. 6, the device for processing output power of a transducer includes: a determination module 62, an adjustment module 64, and a control module 66. The processing means for the output power of the transducer will be described in detail below.
The determining module 62 is configured to sweep the frequency of the transducer by adopting a preset driving manner, and determine a resonance point of the transducer under a target load condition; the adjusting module 64 is connected to the determining module 62, and is configured to adjust a preset driving mode of the transducer according to the resonance point; the control module 66 is connected to the adjustment module 64, and is configured to control the output power of the transducer to reach the target output power according to the adjusted preset driving mode.
It should be noted that each of the above modules may be implemented by software or hardware, for example, in the latter case, it may be implemented by: the above modules may be located in the same processor; and/or the above modules are located in different processors in any combination.
In the above embodiment, the processing device for output power of the transducer can sweep the frequency of the transducer through the preset driving mode, find the resonance point under the current transducer and load condition, and then adjust the preset driving mode of the transducer at the resonance point to enable the output power of the transducer to reach the target output power, thereby achieving the purpose of self-adapting to the resonance frequencies of different transducers and load environments and achieving the best working efficiency point, further realizing the technical effect of effectively avoiding the abnormality of power overload protection caused by overlarge power in the sweep process, and further solving the technical problems that the driving mode in the prior art cannot be suitable for complex load environments and the power overload protection is easy to be caused if the overlarge power occurs in the sweep process.
Here, it should be noted that the above-mentioned determining module 62, adjusting module 64 and control module 66 correspond to steps S202 to S206 in embodiment 1, and the above-mentioned modules are the same as examples and application scenarios implemented by the corresponding steps, but are not limited to those disclosed in embodiment 1.
Optionally, the determining module 62 includes: the judging unit is used for judging whether the feedback current value of the transducer under the target load condition is the maximum value or not when the transducer is swept by using a preset driving mode; the first processing unit is used for determining the current frequency as a resonance point under the target load condition if the feedback current value is the maximum value; and the second processing unit is used for continuously using a preset driving signal to sweep the frequency if the feedback current value is not the maximum value.
Optionally, the determining module 62 further includes: and the determining unit is used for determining the frequency range and setting the minimum interval frequency and interval time before the transducer is swept by using a preset driving mode.
Optionally, the preset driving mode includes at least one of the following: the driving circuit comprises a preset driving signal duty ratio and a preset power supply voltage, wherein the preset driving signal duty ratio is the minimum duty ratio of the driving signal, and the preset power supply voltage is the first power supply voltage.
Optionally, the adjustment module 64 includes: and the adjusting unit is used for adjusting the preset driving signal duty ratio and/or the preset power supply voltage.
Optionally, the control module 66 includes: and the first control unit is used for increasing the duty ratio of the preset driving signal under the condition that the preset driving mode comprises the duty ratio of the preset driving signal, and controlling the output power of the transducer to reach the target output power according to the increased duty ratio of the preset driving signal.
Optionally, the control module 66 includes: and the second control unit is used for switching the first power supply voltage into the second power supply voltage under the condition that the preset driving mode comprises the preset power supply voltage, and controlling the output power of the transducer to reach the target output power according to the second power supply voltage, wherein the first power supply voltage is smaller than the second power supply voltage.
Example 3
According to another aspect of the embodiment of the present invention, there is also provided an ultrasonic apparatus, including a controller, and a memory and a transducer connected to the controller, respectively, wherein the memory includes a stored program, and the controller controls the transducer to execute the method for processing the output power of the transducer according to any one of the above when the program runs.
Example 4
According to another aspect of the embodiments of the present invention, there is also provided a processor for running a program, where the program executes the method for processing the output power of the transducer according to any one of the above.
The embodiment of the invention provides equipment, which comprises a processor, a memory and a program stored in the memory and capable of running on the processor, wherein the processor realizes the following steps when executing the program: sweep the frequency of the transducer by adopting a preset driving mode, and determining the resonance point of the transducer under the target load condition; adjusting a preset driving mode of the transducer according to the resonance point; and controlling the output power of the transducer to reach the target output power according to the adjusted preset driving mode.
Optionally, sweep the transducer with a preset driving method to determine a resonance point of the transducer under a target load condition, including: when the transducer is swept by using a preset driving mode, judging whether a feedback current value of the transducer under a target load condition is the maximum value or not; if the feedback current value is the maximum value, determining the current frequency as a resonance point under the target load condition; if the feedback current value is not the maximum value, the preset driving signal is continuously used for scanning frequency.
Optionally, before the transducer is swept using the preset driving mode, the method further comprises: the frequency range is determined and the minimum spacing frequency and spacing time are set.
Optionally, the preset driving mode includes at least one of the following: the driving circuit comprises a preset driving signal duty ratio and a preset power supply voltage, wherein the preset driving signal duty ratio is the minimum duty ratio of the driving signal, and the preset power supply voltage is the first power supply voltage.
Optionally, adjusting the driving mode of the transducer according to the resonance point includes: the preset drive signal duty cycle and/or the preset supply voltage are adjusted.
Optionally, controlling the output power of the transducer to reach the target output power according to the adjusted preset driving mode includes: and when the preset driving mode comprises the preset driving signal duty ratio, increasing the duty ratio of the preset driving signal, and controlling the output power of the transducer to reach the target output power according to the increased preset driving signal duty ratio.
Optionally, controlling the output power of the transducer to reach the target output power according to the adjusted preset driving mode includes: and under the condition that the preset driving mode comprises the preset power supply voltage, switching the first power supply voltage into the second power supply voltage, and controlling the output power of the transducer to reach the target output power according to the second power supply voltage, wherein the first power supply voltage is smaller than the second power supply voltage.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
In the foregoing embodiments of the present invention, the descriptions of the embodiments are emphasized, and for a portion of this disclosure that is not described in detail in this embodiment, reference is made to the related descriptions of other embodiments.
In the several embodiments provided in the present application, it should be understood that the disclosed technology may be implemented in other manners. The above-described embodiments of the apparatus are merely exemplary, and the division of the units, for example, may be a logic function division, and may be implemented in another manner, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interfaces, units or modules, or may be in electrical or other forms.
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 units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied essentially or in part or all of the technical solution or in part in the form of a software product stored in a storage medium, including instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a usb disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (7)
1. A method of processing the output power of a transducer, comprising:
sweep the frequency of the transducer by adopting a preset driving mode, and determining the resonance point of the transducer under the target load condition;
Adjusting a preset driving mode of the transducer according to the resonance point, wherein the preset driving mode comprises at least one of the following steps: the driving circuit comprises a preset driving signal duty ratio and a preset power supply voltage, wherein the preset driving signal duty ratio is the minimum duty ratio of a driving signal, and the preset power supply voltage is a first power supply voltage;
controlling the output power of the energy converter to reach the target output power according to the adjusted preset driving mode;
according to the adjusted preset driving mode, controlling the output power of the energy converter to reach the target output power, including:
if the preset driving mode comprises the preset driving signal duty ratio, the duty ratio of the preset driving signal is increased, and the output power of the transducer is controlled to reach the target output power according to the increased preset driving signal duty ratio;
And under the condition that the preset driving mode comprises the preset power supply voltage, switching the first power supply voltage into a second power supply voltage, and controlling the output power of the energy converter to reach the target output power according to the second power supply voltage, wherein the first power supply voltage is smaller than the second power supply voltage.
2. The method of claim 1, wherein sweeping the transducer with a preset driving scheme determines a resonance point of the transducer under a target load condition, comprising:
When the transducer is swept by using the preset driving mode, judging whether a feedback current value of the transducer under the target load condition is the maximum value or not;
If the feedback current value is the maximum value, determining that the current frequency is the resonance point under the target load condition;
and if the feedback current value is not the maximum value, continuing to sweep the frequency by using the preset driving signal.
3. The method of claim 2, further comprising, prior to sweeping the transducer using the preset driving pattern:
The frequency range is determined and the minimum spacing frequency and spacing time are set.
4. The method of claim 1, wherein adjusting the driving mode of the transducer according to the resonance point comprises:
and adjusting the duty ratio of the preset driving signal and/or the preset power supply voltage.
5. A processing apparatus for transducer output power, comprising:
The determining module is used for sweeping the transducer in a preset driving mode and determining a resonance point of the transducer under a target load condition;
The adjusting module is used for adjusting a preset driving mode of the transducer according to the resonance point, and the preset driving mode comprises at least one of the following steps: the driving circuit comprises a preset driving signal duty ratio and a preset power supply voltage, wherein the preset driving signal duty ratio is the minimum duty ratio of a driving signal, and the preset power supply voltage is a first power supply voltage;
the control module comprises a first control unit and a second control unit, wherein:
The first control unit is configured to control the output power of the transducer to reach a target output power according to the adjusted preset driving mode, wherein if the preset driving mode includes the duty ratio of the preset driving signal, the duty ratio of the preset driving signal is increased, and the output power of the transducer is controlled to reach the target output power according to the increased duty ratio of the preset driving signal;
The second control unit is configured to switch the first power supply voltage to a second power supply voltage when the preset driving mode includes the preset power supply voltage, and control the output power of the transducer to reach a target output power according to the second power supply voltage, where the first power supply voltage is smaller than the second power supply voltage.
6. An ultrasonic device, characterized in that the ultrasonic device comprises a controller, and a memory and a transducer respectively connected with the controller, wherein the memory comprises a stored program, wherein the controller controls the transducer to execute the processing method of the output power of the transducer according to any one of claims 1 to 4 when the program runs.
7. A processor, characterized in that the processor is adapted to run a program, wherein the program when run performs the method of processing the output power of the transducer according to any of claims 1 to 4.
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| US5637947A (en) * | 1994-01-05 | 1997-06-10 | Technologies Gmbh & Co. Branson Ultraschall Niederlassung Der Emerson | Method and apparatus for operating a generator supplying a high-frequency power to an ultrasonic transducer |
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