Resonant frequency automatic tracking method and related device

Abstract

The invention discloses a resonant frequency automatic tracking method and a related device, and relates to the technical field of automation control, and the method comprises the steps: when an ozone system works at a working frequency given by an upper computer, determining a first power value of the ozone system at a power grid side, and adjusting the working frequency of the ozone system for multiple times, and determining a second power value of the ozone system on the power grid side after each adjustment to obtain second power values corresponding to the multiple adjustment, and determining the resonant frequency of the ozone system according to the first power value and the second power values corresponding to the multiple adjustment to enable the ozone system to work at the resonant frequency. As the power grid side power value of the ozone system working at the resonant frequency is maximum, the resonant frequency is determined in the actual working process of the ozone system by adjusting the working frequency of the ozone system for multiple times, the influence of factors such as production errors, device differences and changes after scene operation is avoided, the resonant frequency is more accurate, and the reliability of the system is improved. And the working efficiency of the ozone system is improved.

Description

Technical Field

[0001] The present application relates to the field of automation control technology, and in particular to a resonance frequency automatic tracking method and related devices. Background Art

[0002] At present, the operation of the ozone system depends on the operating frequency given by the host computer PLC, which is usually the resonant frequency under theoretical conditions to improve the working efficiency of the ozone system.

[0003] However, due to production errors, device differences, changes after scene operation, etc., the true resonant frequency of the ozone system will shift within a small range. If it still operates according to the operating frequency given by the host computer PLC, the operating efficiency of the ozone system will be low. Summary of the invention

[0004] In view of the above problems, the present application provides a method and related device for automatically tracking the resonant frequency to achieve the purpose of making the ozone system dynamically operate at the resonant frequency. The specific scheme is as follows:

[0005] The first aspect of the present application provides a method for automatically tracking a resonant frequency, comprising:

[0006] When the ozone system operates at an operating frequency given by the host computer, determining a first power value of the ozone system on the grid side;

[0007] Adjusting the operating frequency of the ozone system multiple times, and determining a second power value of the ozone system on the grid side after each adjustment, so as to obtain second power values ​​corresponding to the multiple adjustments respectively;

[0008] The resonant frequency of the ozone system is determined according to the first power value and the second power values ​​respectively corresponding to the multiple adjustments, so that the ozone system operates at the resonant frequency.

[0009] In a possible implementation, the operating frequency of the ozone system is adjusted multiple times, including:

[0010] The operating frequency of the ozone system is adjusted multiple times according to the adjustment step in the frequency adjustment table, wherein the adjustment direction of the latter adjustment is determined according to the power change direction and the adjustment direction corresponding to the previous adjustment, the adjustment direction corresponding to the first adjustment is a preset direction, the power change direction corresponding to the first adjustment is determined according to the second power value corresponding to the first adjustment and the first power value, and the power change direction corresponding to any subsequent adjustment is determined according to the second power value corresponding to the adjustment and the second power value corresponding to the adjustment before the adjustment.

[0011] In a possible implementation, determining the resonant frequency of the ozone system according to the first power value and the second power values ​​respectively corresponding to the multiple adjustments includes:

[0012] Determining power change directions corresponding to the multiple adjustments respectively according to the first power value and the second power values ​​corresponding to the multiple adjustments respectively;

[0013] The resonant frequency of the ozone system is determined according to the power change directions respectively corresponding to the multiple adjustments.

[0014] In a possible implementation, determining the resonant frequency of the ozone system according to the power change directions respectively corresponding to the multiple adjustments includes:

[0015] If the power change direction corresponding to two adjacent adjustments changes from forward power to reverse power for the first time in the multiple adjustments, the adjusted operating frequency corresponding to the first adjustment of the two adjacent adjustments is determined as the resonant frequency, wherein the forward power refers to the direction of increasing power, and the reverse power refers to the direction of decreasing power.

[0016] In a possible implementation, a subsequent adjustment step in the frequency adjustment table is smaller than a previous adjustment step.

[0017] In a possible implementation, the power value of the ozone system on the grid side is an input power value, and a process of determining the input power value includes:

[0018] Collecting the instantaneous voltage and current of the three-phase power grid on the power grid side;

[0019] Processing the instantaneous voltage of the three-phase power grid and the instantaneous current of the three-phase power grid into DC quantities to obtain the DC quantities of the two-phase voltage and the DC quantities of the two-phase current;

[0020] The input power value is calculated according to the two-phase DC voltage and the two-phase DC current.

[0021] A second aspect of the present application provides a resonant frequency automatic tracking device, comprising:

[0022] A first power value determination module, used to determine a first power value of the ozone system on the grid side when the ozone system operates at an operating frequency given by the host computer;

[0023] A second power value determination module, used to adjust the operating frequency of the ozone system multiple times, and determine the second power value of the ozone system on the grid side after each adjustment, so as to obtain the second power values ​​corresponding to the multiple adjustments respectively;

[0024] The resonant frequency determination module is used to determine the resonant frequency of the ozone system according to the first power value and the second power values ​​respectively corresponding to the multiple adjustments, so that the ozone system works at the resonant frequency.

[0025] A third aspect of the present application provides a computer program product, comprising computer-readable instructions. When the computer-readable instructions are executed on an electronic device, the electronic device implements the automatic resonant frequency tracking method of the first aspect or any implementation of the first aspect.

[0026] A fourth aspect of the present application provides an electronic device, comprising at least one processor and a memory connected to the processor, wherein:

[0027] The memory is used to store computer programs;

[0028] The processor is used to execute the computer program so that the electronic device can implement the automatic resonant frequency tracking method of the first aspect or any implementation manner of the first aspect.

[0029] A fifth aspect of the present application provides a computer storage medium, which carries one or more computer programs. When the one or more computer programs are executed by an electronic device, the electronic device can implement the automatic resonant frequency tracking method of the above-mentioned first aspect or any implementation method of the first aspect.

[0030] By means of the above technical scheme, the automatic resonant frequency tracking method provided by the present application, when the ozone system operates at the operating frequency given by the host computer, determines the first power value of the ozone system on the grid side, adjusts the operating frequency of the ozone system multiple times, determines the second power value of the ozone system on the grid side after each adjustment, so as to obtain the second power values ​​corresponding to the multiple adjustments, and determines the resonant frequency of the ozone system according to the first power value and the second power values ​​corresponding to the multiple adjustments, so that the ozone system operates at the resonant frequency. Since the power value of the ozone system on the grid side reaches the maximum when it operates at the resonant frequency, the resonant frequency of the ozone system can be determined by adjusting the operating frequency of the ozone system multiple times and determining the corresponding second power value. Since the resonant frequency is determined during the actual operation of the ozone system, it will not be affected by factors such as production errors, device differences, and changes after the scene is run. The determined resonant frequency is more accurate, so that the ozone system operates at the resonant frequency, which improves the working efficiency of the ozone system. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The above and other features, advantages and aspects of the embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. Throughout the accompanying drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and the originals and elements are not necessarily drawn to scale.

[0032] Figure 1 A schematic diagram of a system architecture provided for this application;

[0033] Figure 2 A schematic diagram of an optional hardware structure of the terminal 100 provided in this application;

[0034] Figure 3 A schematic diagram of the structure of a server 200 provided in this application;

[0035] Figure 4 A schematic diagram of a flow chart of a method for automatically tracking a resonant frequency provided in the present application;

[0036] Figure 5 A schematic diagram of a flow chart of another resonant frequency automatic tracking method provided in the present application;

[0037] Figure 6 A schematic diagram of the structure of a resonant frequency automatic tracking device provided in the present application;

[0038] Figure 7 A schematic diagram of the structure of an electronic device provided in this application. DETAILED DESCRIPTION

[0039] The following describes the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. The terms used in the implementation method section of the present application are only used to explain the specific embodiments of the present application, and are not intended to limit the present application.

[0040] The embodiments of the present application are described below in conjunction with the accompanying drawings. Those skilled in the art will appreciate that, with the development of technology and the emergence of new scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0041] The terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and need not be used to describe a specific order or sequential order. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances, which is only to describe the distinction mode adopted by the objects of the same attributes when describing in the embodiments of the present application. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, so that the process, method, system, product or equipment comprising a series of units need not be limited to those units, but may include other units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0042] See also Figure 1 , Figure 1 A schematic diagram of a system architecture is shown. The system may include a terminal 100 and a server 200. The server 200 may include one or more servers ( Figure 1 In the example, a server is included, and the server 200 can provide the method provided in the embodiment of the present application for one or more terminals.

[0043] Among them, an application can be installed on the terminal 100, and the above application and web page can provide an interface. The terminal 100 can receive relevant parameters entered by the user on the interface and send the above parameters to the server 200. The server 200 can obtain processing results based on the received parameters and return the processing results to the terminal 100.

[0044] It should be understood that in some optional implementations, the terminal 100 can also complete the action of obtaining the processing result based on the received parameters by itself without the cooperation of the server, and the embodiments of the present application are not limited to this.

[0045] Next describe Figure 1 The product form of the mid-terminal 100;

[0046] The terminal 100 in the embodiment of the present application can be a mobile phone, a tablet computer, a wearable device, a vehicle-mounted device, an augmented reality (AR) / virtual reality (VR) device, a laptop computer, an ultra-mobile personal computer (UMPC), a netbook, a personal digital assistant (PDA), a controller in an ozone system, etc., and the embodiment of the present application does not impose any restrictions on this.

[0047] Figure 2 An optional hardware structure diagram of the terminal 100 is shown.

[0048] refer to Figure 2 As shown, the terminal 100 may include a radio frequency unit 110, a memory 120, an input unit 130, a display unit 140, a camera 150 (optional), an audio circuit 160 (optional), a speaker 161 (optional), a microphone 162 (optional), an earphone jack 163 (optional), a processor 170, an external interface 180, a power supply 190 and other components. Those skilled in the art will appreciate that Figure 2 These are merely examples of terminals or multi-function devices and do not constitute limitations on the terminals or multi-function devices, which may include more or fewer components than those shown in the figures, or combinations of certain components, or different components.

[0049] The input unit 130 can be used to receive input digital or character information, and generate key signal input related to the user settings and function control of the portable multifunctional device. Specifically, the input unit 130 may include a touch screen 131 (optional) and / or other input devices 132. The touch screen 131 can collect the user's touch operations on or near it (such as the user's operation on or near the touch screen using any suitable object such as fingers, joints, stylus, etc.), and drive the corresponding connection device according to a pre-set program. The touch screen can detect the user's touch action on the touch screen, convert the touch action into a touch signal and send it to the processor 170, and can receive and execute the command sent by the processor 170; the touch signal at least includes the touch point coordinate information. The touch screen 131 can provide an input interface and an output interface between the terminal 100 and the user. In addition, the touch screen can be implemented using multiple types such as resistive, capacitive, infrared and surface acoustic wave. In addition to the touch screen 131, the input unit 130 can also include other input devices. Specifically, other input devices 132 may include, but are not limited to, one or more of a physical keyboard, function keys (such as a volume control key, a switch key, etc.), a trackball, a mouse, a joystick, and the like.

[0050] Among them, the input device 132 can receive input data and the like.

[0051] The display unit 140 may be used to display information input by a user or information provided to a user, various menus of the terminal 100, an interactive interface, file display, and / or playback of any multimedia file.

[0052] The memory 120 can be used to store instructions and data. The memory 120 can mainly include an instruction storage area and a data storage area. The data storage area can store various data, such as multimedia files, texts, etc.; the instruction storage area can store software units such as operating systems, applications, instructions required for at least one function, or their subsets and extensions. It can also include a non-volatile random access memory; provide the processor 170 with hardware, software and data resources including management of computing and processing equipment, and support control software and applications. It is also used for the storage of multimedia files, and the storage of running programs and applications.

[0053] The processor 170 is the control center of the terminal 100. It uses various interfaces and lines to connect various parts of the entire terminal 100. By running or executing instructions stored in the memory 120 and calling data stored in the memory 120, it executes various functions of the terminal 100 and processes data, thereby controlling the terminal device as a whole. Optionally, the processor 170 may include one or more processing units; preferably, the processor 170 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface and application program, and the modem processor mainly processes wireless communication. It is understandable that the above-mentioned modem processor may not be integrated into the processor 170. In some embodiments, the processor and the memory may be implemented on a single chip, and in some embodiments, they may also be implemented separately on separate chips. The processor 170 may also be used to generate corresponding operation control signals, send them to corresponding components of the computing and processing device, read and process data in the software, especially read and process data and programs in the memory 120, so that each functional module therein performs corresponding functions, thereby controlling the corresponding components to act according to the requirements of the instructions.

[0054] Among them, the memory 120 can be used to store software codes related to the automatic resonance frequency tracking method, the processor 170 can execute the steps of the automatic resonance frequency tracking method, and can also schedule other units (such as the above-mentioned input unit 130 and display unit 140) to implement corresponding functions.

[0055] The radio frequency unit 110 (optional) can be used for receiving and sending information or receiving and sending signals during a call, for example, after receiving the downlink information of the base station, it is sent to the processor 170 for processing; in addition, the designed uplink data is sent to the base station. Generally, the RF circuit includes but is not limited to an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier (Low Noise Amplifier, LNA), a duplexer, etc. In addition, the radio frequency unit 110 can also communicate with network devices and other devices through wireless communication. The wireless communication can use any communication standard or protocol, including but not limited to Global System of Mobile Communication (Global System of Mobile Communication, GSM), General Packet Radio Service (General Packet Radio Service, GPRS), Code Division Multiple Access (Code Division Multiple Access, CDMA), Wideband Code Division Multiple Access (Wideband Code Division Multiple Access, WCDMA), Long Term Evolution (Long Term Evolution, LTE), email, Short Messaging Service (SMS), etc.

[0056] In this embodiment of the present application, the RF unit 110 can send data to the server 200 and receive processing results sent by the server 200.

[0057] It should be understood that the radio frequency unit 110 is optional and can be replaced by other communication interfaces, such as a network port.

[0058] The terminal 100 also includes a power supply 190 (such as a battery) for supplying power to various components. Preferably, the power supply can be logically connected to the processor 170 through a power management system, so that the power management system can manage functions such as charging, discharging, and power consumption.

[0059] The terminal 100 further includes an external interface 180 , which may be a standard Micro USB interface or a multi-pin connector, and may be used to connect the terminal 100 to communicate with other devices, or to connect a charger to charge the terminal 100 .

[0060] Although not shown, the terminal 100 may also include a flashlight, a wireless fidelity (WiFi) module, a Bluetooth module, sensors with different functions, etc., which are not described in detail here. Some or all of the methods described below may be applied in the following embodiments. Figure 2 In the terminal 100 shown.

[0061] Next describe Figure 1 The product form of the server 200;

[0062] Figure 3 A schematic diagram of the structure of a server 200 is provided, such as Figure 3 As shown, the server 200 includes a bus 201, a processor 202, a communication interface 203, and a memory 204. The processor 202, the memory 204, and the communication interface 203 communicate with each other via the bus 201.

[0063] The bus 201 may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 3 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0064] The processor 202 may be any one or more of a central processing unit (CPU), a graphics processing unit (GPU), a microprocessor (MP), or a digital signal processor (DSP).

[0065] The memory 204 may include a volatile memory, such as a random access memory (RAM). The memory 204 may also include a non-volatile memory, such as a read-only memory (ROM), a flash memory, a hard disk drive (HDD), or a solid state drive (SSD).

[0066] The memory 204 may be used to store software codes related to the automatic resonance frequency tracking method, and the processor 202 may execute the steps of the automatic resonance frequency tracking method of the chip, and may also schedule other units to implement corresponding functions.

[0067] It should be understood that the above-mentioned terminal 100 and server 200 can be centralized or distributed devices, and the processors in the above-mentioned terminal 100 and server 200 (such as processor 170 and processor 202) can be hardware circuits (such as application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), general-purpose processors, DSPs, microprocessors or microcontrollers, etc.), or a combination of these hardware circuits. For example, the processor can be a hardware system with an instruction execution function, such as a CPU, DSP, etc., or a hardware system without an instruction execution function, such as an ASIC, FPGA, etc., or a combination of the above-mentioned hardware systems without an instruction execution function and hardware systems with an instruction execution function.

[0068] The present application provides a method for automatically tracking a resonance frequency. The following is a detailed description of the method for automatically tracking a resonance frequency according to an embodiment of the present application in conjunction with the accompanying drawings.

[0069] Reference Figure 4 , Figure 4 A schematic flow chart of a method for automatically tracking a resonant frequency provided in an embodiment of the present application, the method may include:

[0070] Step S401: When the ozone system operates at the operating frequency given by the host computer, determine a first power value of the ozone system on the grid side.

[0071] As introduced in the background technology above, when the host computer gives a working frequency, the ozone system will operate at the given working frequency during initial operation. In this embodiment, after the system runs stably, the power value of the ozone system on the grid side can be determined. In order to distinguish it from the power value later, this power value is defined as the first power value.

[0072] Optionally, the above-mentioned “power value of the ozone system on the grid side” may be an input power value of the ozone system on the grid side, or an output power value of the ozone system on the grid side.

[0073] Taking the first power value as the input power value as an example, the process of “determining the first power value of the ozone system on the grid side” is introduced.

[0074] Optionally, this step can first collect the instantaneous voltage and current of the three-phase power grid on the power grid side, and then process the instantaneous voltage and current of the three-phase power grid into DC quantities to obtain two-phase voltage DC quantities and two-phase current DC quantities, and finally calculate the input power value of the ozone system on the power grid side according to the two-phase voltage DC quantities and the two-phase current DC quantities, as the above-mentioned first power value.

[0075] Step S402: The operating frequency of the ozone system is adjusted multiple times, and a second power value of the ozone system on the grid side is determined after each adjustment, so as to obtain second power values ​​corresponding to the multiple adjustments respectively.

[0076] Since the operating frequency given by the above-mentioned host computer may deviate from the actual resonant frequency of the ozone system, in order to overcome the deviation, the present embodiment can adjust the operating frequency of the ozone system multiple times, and after each adjustment and after waiting for the ozone system to stabilize, determine the second power value of the ozone system on the grid side, thereby obtaining the second power values ​​corresponding to the multiple adjustments.

[0077] The determination process of the above-mentioned second power value is the same as that of the first power value mentioned above. For details, please refer to the above introduction and will not be repeated here.

[0078] Step S403: determining the resonant frequency of the ozone system according to the first power value and the second power values ​​respectively corresponding to the multiple adjustments, so that the ozone system operates at the resonant frequency.

[0079] Since the power value of the ozone system on the grid side is related to whether the ozone system operates at a resonant frequency, this embodiment can determine the resonant frequency of the ozone system according to the first power value and the second power values ​​corresponding to the multiple adjustments.

[0080] It should be noted that the above-mentioned maximum power value refers to the maximum value of the first power value and the second power values ​​corresponding to the multiple adjustments.

[0081] After the resonant frequency is determined in this embodiment, the ozone system can be operated at the determined resonant frequency to achieve optimal working efficiency of the ozone system.

[0082] It should be understood that as the running time of the ozone system increases, the resonant frequency of the ozone system may change slightly. In order to make the ozone system dynamically operate at the resonant frequency, optionally, the present embodiment may periodically perform the above steps S401 to S403; optionally, the present embodiment may also monitor the working efficiency of the ozone system each time the ozone system is operated at the resonant frequency, and when the working efficiency is reduced by a certain efficiency threshold, perform the above steps S401 to S403 again; optionally, the present embodiment may also monitor the power value of the ozone system on the grid side each time the ozone system is operated at the resonant frequency, and when the power value is reduced by a certain power threshold, perform the above steps S401 to S403 again.

[0083] Of course, the loop conditions for executing steps S401 to S403 in the above loop are only examples. In addition, other loop conditions can also be adopted, which can be determined according to the actual scenario and are not limited in this application.

[0084] The resonant frequency automatic tracking method provided by the present application, when the ozone system operates at the operating frequency given by the host computer, determines the first power value of the ozone system on the grid side, adjusts the operating frequency of the ozone system multiple times, determines the second power value of the ozone system on the grid side after each adjustment, so as to obtain the second power values ​​corresponding to the multiple adjustments, and determines the resonant frequency of the ozone system according to the first power value and the second power values ​​corresponding to the multiple adjustments, so that the ozone system operates at the resonant frequency. Since the power value of the ozone system on the grid side reaches the maximum when it operates at the resonant frequency, the resonant frequency of the ozone system can be determined by adjusting the operating frequency of the ozone system multiple times and determining the corresponding second power value. Since the resonant frequency is determined during the actual operation of the ozone system, it will not be affected by factors such as production errors, device differences, and changes after the scene is run. The determined resonant frequency is more accurate, so that the ozone system operates at the resonant frequency, which improves the working efficiency of the ozone system.

[0085] In some embodiments of the present application, the process of “multiple adjustments to the operating frequency of the ozone system” in the above step S402 is introduced.

[0086] It should be understood that the two adjustment factors that must be included when adjusting the working frequency of the ozone system are the adjustment step and the adjustment direction. Among them, the adjustment step refers to the frequency interval that needs to be crossed for each adjustment; the adjustment direction includes forward adjustment and reverse adjustment. The forward adjustment refers to the direction of increasing the working frequency, and the reverse adjustment refers to the direction of decreasing the working frequency.

[0087] In a possible implementation, in addition to the above two adjustment factors, a third adjustment factor, i.e., the number of adjustments, may also be included. For example, if the number of adjustments is 10, then in this embodiment, the adjustment step and adjustment direction may be pre-set for 10 adjustments, and then the operating frequency of the ozone system may be adjusted 10 times according to the pre-set adjustment step and adjustment direction.

[0088] Of course, the above adjustment times of 10 is only an example and is not intended to limit the present application.

[0089] Since the actual resonant frequency in the ozone system changes slowly, a more accurate resonant frequency can usually be determined in subsequent steps by setting a reasonable adjustment step and adjustment direction while controlling the number of adjustments to be as small as possible.

[0090] However, the above-mentioned method of pre-setting the adjustment direction does not refer to the change of the second power value during the adjustment process, which may cause part of the adjustment to be invalid. The existence of invalid adjustment will increase the time taken to determine the resonant frequency in this embodiment. If the time is very long, resonant frequency aging may occur.

[0091] In order to avoid the above problems, a frequency adjustment table containing the adjustment steps of each adjustment can be generated, and the adjustment direction corresponding to the next adjustment can be determined based on the power change direction and adjustment direction corresponding to the previous adjustment. Then, the working frequency of the ozone system can be adjusted multiple times according to the adjustment steps and the determined adjustment direction in the frequency adjustment table.

[0092] Among them, the adjustment direction corresponding to the first adjustment among multiple adjustments is a preset direction, the power change direction corresponding to the first adjustment is determined according to the second power value and the first power value corresponding to the first adjustment, and the power change direction corresponding to any subsequent adjustment is determined according to the second power value corresponding to the adjustment and the second power value corresponding to the previous adjustment.

[0093] The above-mentioned power change direction includes forward power and reverse power. The forward power refers to the direction in which the power increases, and the reverse power refers to the direction in which the power decreases.

[0094] Optionally, the above-mentioned “determining the adjustment direction corresponding to the next adjustment according to the power change direction and adjustment direction corresponding to the previous adjustment” includes: if the adjustment direction corresponding to the previous adjustment is forward adjustment, and the power change direction corresponding to the previous adjustment is forward power, then the adjustment direction corresponding to the next adjustment is forward adjustment; if the adjustment direction corresponding to the previous adjustment is forward adjustment, and the power change direction corresponding to the previous adjustment is reverse power, then the adjustment direction corresponding to the next adjustment is reverse adjustment; if the adjustment direction corresponding to the previous adjustment is reverse adjustment, and the power change direction corresponding to the previous adjustment is forward power, then the adjustment direction corresponding to the next adjustment is reverse adjustment; if the adjustment direction corresponding to the previous adjustment is reverse adjustment, and the power change direction corresponding to the previous adjustment is reverse power, then the adjustment direction corresponding to the next adjustment is forward adjustment.

[0095] That is, the operating frequency of the ozone system is increased by one adjustment step. If the power value of the ozone system on the grid side increases, the operating frequency of the ozone system will be increased by one adjustment step in the next adjustment. Conversely, if the power value of the ozone system on the grid side decreases, the operating frequency of the ozone system will be reduced by one adjustment step in the next adjustment.

[0096] Reduce the operating frequency of the ozone system by one adjustment step. If the power value of the ozone system on the grid side increases, reduce the operating frequency of the ozone system by one adjustment step in the next adjustment. Conversely, if the power value of the ozone system on the grid side decreases, increase the operating frequency of the ozone system by one adjustment step in the next adjustment.

[0097] Based on the adjustment method provided in the above embodiment, optionally, the above process of "determining the resonant frequency of the ozone system according to the first power value and the second power values ​​corresponding to the multiple adjustments respectively" may include: determining the power change directions corresponding to the multiple adjustments respectively according to the first power value and the second power values ​​corresponding to the multiple adjustments respectively; determining the resonant frequency of the ozone system according to the power change directions corresponding to the multiple adjustments respectively.

[0098] In this embodiment, the above process of "determining the resonant frequency of the ozone system according to the power change directions corresponding to the multiple adjustments" can be implemented in a variety of ways, including but not limited to the following ways.

[0099] A first implementation method is to determine a maximum value among the first power value and the second power values ​​corresponding to the multiple adjustments, and determine the operating frequency corresponding to the maximum value as the resonant frequency of the ozone system.

[0100] The second implementation method: fitting can be performed based on the first power value and the second power values ​​corresponding to the multiple adjustments, as well as the operating frequency corresponding to the above-mentioned first power value and the operating frequencies corresponding to the multiple second power values, to establish a linear and / or nonlinear relationship between the operating frequency and the power value, and based on the established relationship, find the operating frequency that maximizes the power value of the ozone system on the grid side, and determine it as the resonant frequency of the ozone system.

[0101] In both of the above methods, the purpose is to find the maximum power value of the ozone system on the grid side, so as to determine the operating frequency that maximizes the power value as the resonant frequency of the ozone system. This strict method of finding the maximum power value can determine a more accurate resonant frequency. In scenarios where the resonant frequency changes relatively slowly, the working efficiency of the ozone system can be more effectively improved.

[0102] However, in the above strict method of finding the maximum power value, if the true resonant frequency appears in the first few adjustments of multiple adjustments, the subsequent multiple adjustment processes, subsequent power comparison processes, and fitting processes will take a certain amount of time, resulting in a time lag in determining the resonant frequency. Therefore, if the true resonant frequency changes within the time range of the above process, the ozone system will work according to the resonant frequency determined this time, which will reduce the working efficiency of the ozone system.

[0103] In order to determine the resonant frequency in more real time, the present application also provides the following preferred implementation method.

[0104] A third preferred implementation manner, the process of "determining the resonant frequency of the ozone system according to the power change directions corresponding to the multiple adjustments" may include: if the power change directions corresponding to two adjacent adjustments change from positive power to reverse power for the first time in the multiple adjustments, then the resonant frequency is determined according to the operating frequencies before and after the adjustment corresponding to the two adjacent adjustments, wherein the positive power refers to the direction of increasing power, and the reverse power refers to the direction of decreasing power.

[0105] That is, if the power value of the ozone system on the grid side increases first and then decreases during multiple adjustments, it means that a certain operating frequency within the interval of increasing first and then decreasing is the resonant frequency.

[0106] Optionally, the above process of "determining the resonant frequency according to the working frequencies before and after the two adjacent adjustments respectively corresponding to each other" may include: determining the working frequency after the adjustment corresponding to the first adjustment of the two adjacent adjustments as the resonant frequency.

[0107] For example, assuming that two adjacent adjustments are to adjust the operating frequency from operating frequency a to operating frequency b and then to operating frequency c, if in the process of adjusting the operating frequency a to the operating frequency b, the power value of the ozone system on the grid side increases, and in the process of adjusting the operating frequency b to the operating frequency c, the power value of the ozone system on the grid side decreases, then the operating frequency b is determined as the resonant frequency.

[0108] The adjustment step size is introduced below.

[0109] Optionally, the latter adjustment step in the above frequency adjustment table is smaller than the former adjustment step, that is, when adjusting according to the frequency adjustment table, in this embodiment, regardless of whether the adjustment direction is forward adjustment or reverse adjustment, the adjustment is performed in a manner that the latter adjustment step is smaller than the former adjustment step.

[0110] Optionally, the above frequency adjustment table is a table pre-configured based on manual experience.

[0111] Preferably, the adjustment step corresponding to the current adjustment can be determined based on the adjustment step corresponding to at least one adjustment before the current adjustment, and the second power value and / or the first power value corresponding to at least one adjustment before the current adjustment.

[0112] The above-mentioned embodiment of the present application provides a control strategy for determining the resonant frequency of the ozone system. Through the above-mentioned control strategy, the ozone system can always dynamically operate at the optimal resonant frequency, thereby effectively improving the overall working efficiency of the ozone system.

[0113] In order to enable those skilled in the art to better understand the present application, the overall process of automatic resonant frequency tracking of the present application is described in detail through the following embodiments.

[0114] See also Figure 5 , which is a flow chart of another resonant frequency automatic tracking method provided in an embodiment of the present application.

[0115] Step S501, obtaining an initial operating frequency, controlling the ozone system to operate at the initial operating frequency, and taking the initial operating frequency as the first operating frequency.

[0116] Here, the initial operating frequency refers to the operating frequency given by the host computer.

[0117] Step S502: wait for a set time, and obtain the instantaneous voltage and current of the three-phase grid on the grid side of the ozone system at the first operating frequency after the ozone system is stable.

[0118] Step S503: Determine the grid-side input power value of the ozone system at the first operating frequency as the third power value according to the grid-side three-phase grid instantaneous voltage and the three-phase grid instantaneous current at the grid-side of the ozone system at the first operating frequency.

[0119] If the first operating frequency is the initial operating frequency, the third power value refers to the first power value; if the first operating frequency is not the initial operating frequency, the third power value refers to the second power value.

[0120] Step S504: determine the preset direction as the current adjustment direction.

[0121] Step S505, perform the i-th adjustment: traverse one adjustment step in the frequency adjustment table in sequence each time, and control the working frequency of the ozone system from the first working frequency to the second working frequency according to the currently traversed adjustment step and the current adjustment direction.

[0122] The initial value of i mentioned above is 1.

[0123] The above frequency adjustment table is a preset table, and the latter adjustment step in the frequency adjustment table is smaller than the former adjustment step.

[0124] Step S506: wait for a set time, and after the ozone system is stable, obtain the instantaneous voltage and current of the three-phase grid on the grid side of the ozone system at the second operating frequency.

[0125] Step S507: Determine the grid-side input power value of the ozone system at the second operating frequency according to the grid-side three-phase grid instantaneous voltage and the three-phase grid instantaneous current at the grid-side of the ozone system at the second operating frequency as the fourth power value.

[0126] Step S508: Determine whether the fourth power value is greater than the third power value.

[0127] Step S509: If yes, keep the adjustment direction as the current adjustment direction, control the i value to increase by 1, and return to step S505.

[0128] Step S510: If not, change the adjustment direction to the current adjustment direction, control the i value to increase by 1, and return to step S505.

[0129] It should be noted that the overall process of the automatic resonant frequency tracking method provided in this embodiment is only an example and is not intended to limit the present application.

[0130] A method for automatically tracking a resonance frequency provided by an embodiment of the present application is introduced above, and a device for executing the method for automatically tracking a resonance frequency will be introduced below.

[0131] See also Figure 6 , Figure 6 This is a schematic diagram of the structure of a resonant frequency automatic tracking device provided in an embodiment of the present application. Figure 6 As shown, the device may include:

[0132] A first power value determination module 601 is used to determine a first power value of the ozone system on the grid side when the ozone system operates at an operating frequency given by the host computer;

[0133] A second power value determination module 602 is used to adjust the working frequency of the ozone system multiple times, and determine the second power value of the ozone system on the grid side after each adjustment, so as to obtain the second power values ​​corresponding to the multiple adjustments respectively;

[0134] The resonant frequency determination module 603 is used to determine the resonant frequency of the ozone system according to the first power value and the second power values ​​corresponding to the multiple adjustments, so that the ozone system works at the resonant frequency.

[0135] The resonant frequency automatic tracking device provided by the present application, when the ozone system operates at the operating frequency given by the host computer, determines the first power value of the ozone system on the power grid side, adjusts the operating frequency of the ozone system multiple times, determines the second power value of the ozone system on the power grid side after each adjustment, so as to obtain the second power values ​​corresponding to the multiple adjustments, and determines the resonant frequency of the ozone system according to the first power value and the second power values ​​corresponding to the multiple adjustments, so that the ozone system operates at the resonant frequency. Since the power value of the ozone system on the power grid side reaches the maximum when it operates at the resonant frequency, the resonant frequency of the ozone system can be determined by adjusting the operating frequency of the ozone system multiple times and determining the corresponding second power value. Since the resonant frequency is determined during the actual operation of the ozone system, it will not be affected by factors such as production errors, device differences, and changes after the scene is run. The determined resonant frequency is more accurate, so that the ozone system operates at the resonant frequency, and the working efficiency of the ozone system is improved.

[0136] In a possible implementation, when the second power value determination module adjusts the operating frequency of the ozone system multiple times, it can be specifically used to:

[0137] The operating frequency of the ozone system is adjusted multiple times according to the adjustment step in the frequency adjustment table, wherein the adjustment direction corresponding to the latter adjustment is determined according to the power change direction and the adjustment direction corresponding to the previous adjustment, the adjustment direction corresponding to the first adjustment is a preset direction, the power change direction corresponding to the first adjustment is determined according to the second power value and the first power value corresponding to the first adjustment, and the power change direction corresponding to any subsequent adjustment is determined according to the second power value corresponding to the adjustment and the second power value corresponding to the adjustment before the adjustment.

[0138] In a possible implementation, when the resonant frequency determination module determines the resonant frequency of the ozone system according to the first power value and the second power values ​​respectively corresponding to the multiple adjustments, it can be specifically used to:

[0139] Determining power change directions corresponding to the multiple adjustments respectively according to the first power value and the second power values ​​corresponding to the multiple adjustments respectively;

[0140] The resonant frequency of the ozone system is determined according to the power change directions corresponding to the multiple adjustments.

[0141] In a possible implementation, when the resonant frequency determination module determines the resonant frequency of the ozone system according to the power change directions corresponding to the multiple adjustments, it can be specifically used to:

[0142] The operating frequency of the ozone system is adjusted multiple times according to the adjustment step in the frequency adjustment table, wherein the adjustment direction of the latter adjustment is determined according to the power change direction and the adjustment direction corresponding to the previous adjustment, and the adjustment direction of the first adjustment is a preset direction, wherein the adjustment direction includes at least one of a forward adjustment direction and a reverse adjustment direction, the forward adjustment direction refers to the direction of increasing the operating frequency, and the reverse adjustment direction refers to the direction of decreasing the operating frequency.

[0143] In a possible implementation, a subsequent adjustment step in the frequency adjustment table is smaller than a previous adjustment step.

[0144] In a possible implementation, the power value of the ozone system on the grid side is an input power value.

[0145] The process of determining the input power value in the first power value determination module and the second power value determination module may include:

[0146] Collect the three-phase grid instantaneous voltage and three-phase grid instantaneous current on the grid side;

[0147] The instantaneous voltage and current of the three-phase power grid are processed into DC quantities to obtain the DC quantities of the two-phase voltage and the two-phase current;

[0148] The input power value is calculated based on the two-phase voltage DC quantity and the two-phase current DC quantity.

[0149] The resonant frequency automatic tracking device provided in the present application corresponds to the resonant frequency automatic tracking method mentioned above. For details, please refer to the introduction of the method mentioned above, which will not be repeated here.

[0150] The present application also provides an electronic device in an embodiment. Figure 7 As shown, it shows a schematic diagram of the structure of an electronic device suitable for implementing the embodiment of the present application. The electronic device in the embodiment of the present application may include but is not limited to fixed terminals such as mobile phones, laptops, PDAs (personal digital assistants), PADs (tablet computers), desktop computers, etc. Figure 7 The electronic device shown is merely an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0151] like Figure 7As shown, the electronic device may include a processing device (e.g., a central processing unit, a graphics processing unit, etc.) 701, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 702 or a program loaded from a storage device 708 to a random access memory (RAM) 703. When the electronic device is powered on, various programs and data required for the operation of the electronic device are also stored in the RAM 703. The processing device 701, the ROM 702, and the RAM 703 are connected to each other via a bus 704. An input / output (I / O) interface 705 is also connected to the bus 704.

[0152] Typically, the following devices may be connected to the I / O interface 705: an input device 706 including, for example, a touch screen, a touch pad, a keyboard, a mouse, a camera, a microphone, an accelerometer, a gyroscope, etc.; an output device 707 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; a storage device 708 including, for example, a memory card, a hard disk, etc.; and a communication device 709. The communication device 709 may allow the electronic device to communicate with other devices wirelessly or by wire to exchange data. Although Figure 7 An electronic device having various devices is shown, but it should be understood that it is not required to implement or possess all the devices shown. More or fewer devices may be implemented or possessed instead.

[0153] An embodiment of the present application also provides a computer program product including computer-readable instructions. When the computer-readable instructions are executed on an electronic device, the electronic device implements any one of the automatic resonant frequency tracking methods provided in the embodiments of the present application.

[0154] A computer-readable storage medium is also provided in an embodiment of the present application. The storage medium carries one or more computer programs. When the one or more computer programs are executed by an electronic device, the electronic device can implement any one of the automatic resonant frequency tracking methods provided in the embodiments of the present application.

[0155] It should also be noted that the device embodiments described above are merely schematic, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed over multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. In addition, in the drawings of the device embodiments provided by the present application, the connection relationship between the modules indicates that there is a communication connection between them, which may be specifically implemented as one or more communication buses or signal lines.

[0156] Through the description of the above implementation mode, the technicians in the field can clearly understand that the present application can be implemented by means of software plus necessary general hardware, and of course, it can also be implemented by special hardware including special integrated circuits, special CPUs, special memories, special components, etc. In general, all functions completed by computer programs can be easily implemented by corresponding hardware, and the specific hardware structure used to implement the same function can also be various, such as analog circuits, digital circuits or special circuits. However, for the present application, software program implementation is a better implementation mode in more cases. Based on such an understanding, the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a readable storage medium, such as a computer floppy disk, a U disk, a mobile hard disk, a ROM, a RAM, a magnetic disk or an optical disk, etc., including a number of instructions to enable a computer device (which can be a personal computer, a training device, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0157] In the above embodiments, all or part of the embodiments may be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or part of the embodiments may be implemented in the form of a computer program product.

[0158] The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website site, a computer, a training device, or a data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, training device, or data center. The computer-readable storage medium may be any available medium that a computer can store or a data storage device such as a training device, a data center, etc. that includes one or more available media integrations. The available medium may be a magnetic medium, (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid-state drive (SSD)), etc.

Claims

1. A method for automatically tracking a resonance frequency, characterized in that: include: When the ozone system operates at an operating frequency given by the host computer, determining a first power value of the ozone system on the grid side; Adjusting the operating frequency of the ozone system multiple times, and determining a second power value of the ozone system on the grid side after each adjustment, so as to obtain second power values ​​corresponding to the multiple adjustments respectively; The resonant frequency of the ozone system is determined according to the first power value and the second power values ​​respectively corresponding to the multiple adjustments, so that the ozone system operates at the resonant frequency.

2. The automatic resonance frequency tracking method according to claim 1, characterized in that: The operating frequency of the ozone system is adjusted multiple times, including: The operating frequency of the ozone system is adjusted multiple times according to the adjustment step in the frequency adjustment table, wherein the adjustment direction corresponding to the latter adjustment is determined according to the power change direction and the adjustment direction corresponding to the previous adjustment, the adjustment direction corresponding to the first adjustment is a preset direction, the power change direction corresponding to the first adjustment is determined according to the second power value corresponding to the first adjustment and the first power value, and the power change direction corresponding to any subsequent adjustment is determined according to the second power value corresponding to the adjustment and the second power value corresponding to the adjustment before the adjustment.

3. The automatic resonance frequency tracking method according to claim 2, characterized in that: The determining the resonant frequency of the ozone system according to the first power value and the second power values ​​respectively corresponding to the multiple adjustments includes: Determining power change directions corresponding to the multiple adjustments respectively according to the first power value and the second power values ​​corresponding to the multiple adjustments respectively; The resonant frequency of the ozone system is determined according to the power change directions respectively corresponding to the multiple adjustments.

4. The automatic resonance frequency tracking method according to claim 3, characterized in that: Determining the resonant frequency of the ozone system according to the power change directions respectively corresponding to the multiple adjustments includes: If the power change direction corresponding to two adjacent adjustments changes from forward power to reverse power for the first time in the multiple adjustments, the adjusted operating frequency corresponding to the first adjustment of the two adjacent adjustments is determined as the resonant frequency, wherein the forward power refers to the direction of increasing power, and the reverse power refers to the direction of decreasing power.

5. The automatic resonance frequency tracking method according to claim 2, characterized in that: The latter adjustment step in the frequency adjustment table is smaller than the former adjustment step.

6. The method for automatically tracking the resonance frequency according to claim 1, characterized in that: The power value of the ozone system on the grid side is an input power value, and the process of determining the input power value includes: Collecting the instantaneous voltage and current of the three-phase power grid on the power grid side; Processing the instantaneous voltage of the three-phase power grid and the instantaneous current of the three-phase power grid into DC quantities to obtain the DC quantities of the two-phase voltage and the DC quantities of the two-phase current; The input power value is calculated according to the two-phase DC voltage and the two-phase DC current.

7. A resonant frequency automatic tracking device, characterized in that: include: A first power value determination module, used to determine a first power value of the ozone system on the grid side when the ozone system operates at an operating frequency given by the host computer; A second power value determination module, used to adjust the operating frequency of the ozone system multiple times, and determine the second power value of the ozone system on the grid side after each adjustment, so as to obtain the second power values ​​corresponding to the multiple adjustments respectively; The resonant frequency determination module is used to determine the resonant frequency of the ozone system according to the first power value and the second power values ​​respectively corresponding to the multiple adjustments, so that the ozone system works at the resonant frequency.

8. A computer program product, characterized in that The method comprises computer-readable instructions, and when the computer-readable instructions are executed on an electronic device, the electronic device implements the method for automatically tracking the resonance frequency as claimed in any one of claims 1 to 6.

9. An electronic device, characterized in that: The method comprises at least one processor and a memory connected to the processor, wherein: The memory is used to store computer programs; The processor is used to execute the computer program so that the electronic device can implement the automatic resonance frequency tracking method according to any one of claims 1 to 6.

10. A computer storage medium, characterized in that: The storage medium carries one or more computer programs, and when the one or more computer programs are executed by an electronic device, the electronic device can implement the automatic resonance frequency tracking method as described in any one of claims 1 to 6.

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