CN118399895A - Oscillator circuit, parameter estimation method, frequency adjustment method, and water processor - Google Patents
Oscillator circuit, parameter estimation method, frequency adjustment method, and water processor Download PDFInfo
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Abstract
The invention discloses an oscillating circuit, a parameter estimation method, a frequency adjustment method and a water processor, wherein the oscillating circuit comprises: exciting an inductance coil; the first capacitor sub-circuit comprises a first collecting point, a second collecting point, a plurality of first capacitors and a plurality of first switch groups, wherein two ends of the first capacitors connected in series with the corresponding first switch groups are respectively connected with the first collecting point and the second collecting point, and the second collecting point is connected with the first end of the exciting inductance coil; the second capacitor sub-circuit comprises a third collecting point, a fourth collecting point, a plurality of second capacitors and a plurality of second switch groups, wherein the two ends of the second capacitors and the corresponding second switch groups after being connected in series are respectively connected with the third collecting point and the fourth collecting point, and the fourth collecting point is connected with the second end of the exciting inductance coil. The oscillating circuit can be used for estimating the actual inductance parameter of the exciting inductance coil, so that the reliable adjustment of the resonance frequency can be realized, the problem of resonance point deviation is solved, and the stability and the use effect of the water processor are improved.
Description
Technical Field
The invention relates to the technical field of water treatment, in particular to an oscillating circuit, a parameter estimation method, a frequency adjustment method and a water treatment device.
Background
With the development of modern society, water resources are an important part of human industry and life, and pollution problems are also becoming more serious. In order to prevent excessive waste of water resources, a series of restrictions are required for industrial and domestic wastewater discharge, so that the industrial and domestic wastewater can be discharged after reaching standards, and the industrial and domestic wastewater can be reused conveniently. Impurities exist in industrial wastewater, domestic wastewater or treated industrial wastewater, and impurities or precipitates in the wastewater are easy to remain in the water pipe, so that the impurities remain in the water pipe and are solidified on the water pipe wall.
In order to prevent the water tube walls from depositing impurities, the impurities on the water tube walls are usually cleaned in an electromagnetic pulse vibration manner. Because the pipeline has a large requirement on the intensity of electromagnetic pulse, an LC oscillating circuit is generally adopted at present to realize the output of an electromagnetic field and then acts on the pipeline. The resonant frequency of the LC oscillating circuit is mainly influenced by inductance and capacitance, and the capacitance value error of the selected capacitance is about +/-3% in general, but is influenced by the winding process, the magnetic flux of a magnetic core such as ferrite, the on-site installation working condition and the like, the inductance parameter error of a coil can be large, and the resonance frequency point can be greatly deviated, so that the designed resonance frequency point is different from the actual on-site resonance frequency point, and the stability of the circuit and the use effect of a product are influenced.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent. Therefore, the invention aims to provide an oscillating circuit, a parameter estimation method, a frequency adjustment method and a water processor, which are used for adjusting the resonant frequency in an LC oscillating circuit, solving the problem of resonance point deviation, prompting the stability of the water processor and improving the use effect of the water processor.
To achieve the above object, an embodiment of a first aspect of the present invention provides an LC oscillating circuit, including: exciting an inductance coil; the first capacitor sub-circuit comprises a first collection point, a second collection point, a plurality of first capacitors and a plurality of first switch groups corresponding to the first capacitors one by one, wherein two ends of each first capacitor after being connected in series with the corresponding first switch group are respectively connected with the first collection point and the second collection point, and the second collection point is connected with the first end of the excitation inductance coil; the second capacitor sub-circuit comprises a third collection point, a fourth collection point, a plurality of second capacitors and a plurality of second switch groups which are in one-to-one correspondence with the second capacitors, two ends of each second capacitor, which are connected in series with the corresponding second switch group, are respectively connected with the third collection point and the fourth collection point, and the fourth collection point is connected with the second end of the excitation inductance coil; wherein different resonant frequencies of the LC tank circuit are achieved by different combinations of the first switch set and the second switch set.
In addition, the LC oscillating circuit of the embodiment of the present invention may further have the following additional technical features:
according to one embodiment of the invention, the first switch group comprises a first switch and a second switch, a first end of the first switch is connected with the first collection point, a second end of the first switch is connected with the first end of the second switch through a corresponding first capacitor, and a second end of the second switch is connected with the second collection point.
According to one embodiment of the present invention, the second switch group includes a third switch and a fourth switch, a first end of the third switch is connected to the third junction, a second end of the third switch is connected to the first end of the fourth switch through a corresponding second capacitor, and a second end of the fourth switch is connected to the fourth junction.
To achieve the above object, an embodiment of a second aspect of the present invention provides a method for estimating an inductance parameter, for an LC oscillating circuit according to the embodiment of the first aspect, the method including: controlling at least one of a plurality of first switch groups in the LC oscillating circuit to be closed, and controlling at least one of a plurality of second switch groups in the LC oscillating circuit to be closed, so that the LC oscillating circuit forms a closed loop; obtaining a first resonant frequency interval according to the capacitance value in the closed loop and the design inductance value of the exciting inductance coil; inputting a preset waveform signal to the LC oscillating circuit through the first collecting point and the third collecting point, controlling the frequency of the preset waveform signal to change in a first frequency interval, and recording bus current when each change occurs, wherein the first frequency interval comprises the first resonant frequency interval; and calculating the actual inductance value of the exciting inductance coil according to the frequency point corresponding to the maximum value of the bus current and the capacitance value in the closed loop.
In addition, the method for estimating the inductance parameter in the embodiment of the invention can also have the following additional technical characteristics:
According to one embodiment of the present invention, the obtaining the first resonant frequency interval according to the capacitance value in the closed loop and the design inductance value of the exciting inductance coil includes: calculating a first resonant frequency according to the capacitance value in the closed loop and the design inductance value of the exciting inductance coil; calculating a difference value between the first resonant frequency and a first preset frequency, and calculating a sum value between the first resonant frequency and a second preset frequency; and taking a section formed by the difference value and the sum value as the first resonance frequency section.
According to one embodiment of the present invention, the controlling the frequency of the preset waveform signal to vary in a first frequency interval includes: and controlling the frequency of the preset waveform signal to change in the first frequency interval according to a preset step length.
According to one embodiment of the present invention, the preset waveform signal is a sine wave signal or a square wave signal.
To achieve the above object, an embodiment of a third aspect of the present invention provides a method for adaptively adjusting a resonant frequency, for an LC oscillating circuit according to the embodiment of the first aspect, the method including: determining a target resonant frequency; determining a target first switch group from a plurality of first switch groups and a target second switch group from a plurality of second switch groups according to the target resonant frequency and an actual inductance value of an exciting inductance coil in the LC oscillating circuit, wherein the actual inductance value is obtained according to the inductance parameter estimation method in the embodiment of the second aspect; and controlling the target first switch group and the target second switch group to be closed.
In addition, the adaptive adjustment method of the resonant frequency of the embodiment of the invention can also have the following additional technical characteristics:
According to one embodiment of the present invention, the determining, according to the target resonant frequency and the actual inductance value of the exciting inductance coil in the LC oscillating circuit, the target first switch group from the plurality of first switch groups and the target second switch group from the plurality of second switch groups includes: calculating a target capacitance value according to the target resonance frequency and the actual inductance value; and determining the target first switch group and the target second switch group according to the target capacitance value.
To achieve the above object, a fourth aspect of the present invention provides a water treatment apparatus, comprising: an LC tank according to an embodiment of the first aspect described above; a controller comprising a memory, a processor and a computer program stored on the memory, which, when executed by the processor, implements the method of estimating an inductance parameter according to the embodiment of the second aspect described above, or implements the method of adaptively adjusting a resonance frequency according to the embodiment of the third aspect described above.
The oscillating circuit, the parameter estimation method, the frequency adjustment method and the water processor provided by the embodiment of the invention comprise the following steps: exciting an inductance coil; the first capacitor sub-circuit comprises a first collecting point, a second collecting point, a plurality of first capacitors and a plurality of first switch groups, wherein two ends of the first capacitors connected in series with the corresponding first switch groups are respectively connected with the first collecting point and the second collecting point, and the second collecting point is connected with the first end of the exciting inductance coil; the second capacitor sub-circuit comprises a third collecting point, a fourth collecting point, a plurality of second capacitors and a plurality of second switch groups, wherein the third collecting point and the fourth collecting point are respectively connected with two ends of the second capacitors after the second capacitors are connected with the corresponding second switch groups in series, the fourth collecting point is connected with the second end of the excitation inductance coil, the actual inductance parameter of the excitation inductance coil can be estimated, further, the reliable adjustment of the resonance frequency can be realized, the problem of offset of the resonance points is solved, and the stability and the using effect of the water processor are improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a block diagram of an LC tank according to one embodiment of the present invention;
FIG. 2 is a circuit topology of an LC tank according to one embodiment of the present invention;
FIG. 3 is a flow chart of a method of estimating inductance parameters according to an embodiment of the invention;
FIG. 4 is a flow chart of a method of adaptive tuning of resonant frequency in accordance with an embodiment of the present invention;
FIG. 5 is a flow chart of a resonant frequency adaptation process of an LC tank in accordance with one embodiment of the present invention;
FIG. 6 is a block diagram of a water treatment apparatus according to an embodiment of the present invention;
Fig. 7 is a block diagram of a controller according to an embodiment of the present invention.
Reference numerals:
LC oscillating circuit-100, water processor-600, controller-700;
a first capacitance subcircuit-101, a second capacitance subcircuit-102, an excitation inductance coil-103;
A first collection point-1011, a first switch group-1012, a second collection point-1014, a first capacitor-1013, a third collection point-1021, a second switch group-1022, a fourth collection point-1024, a second capacitor-1023;
A first switch-K1, a second switch-K2, a third switch-K3, a fourth switch-K4;
Processor-701, bus-702, memory-703, transceiver-704.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
An oscillation circuit, a parameter estimation method, a frequency adjustment method, and a water processor according to embodiments of the present invention are described below with reference to the accompanying drawings.
Fig. 1 is a block diagram of an LC oscillating circuit according to an embodiment of the present invention.
As shown in fig. 1, the LC oscillating circuit 100 includes: exciting inductor 103, first capacitor subcircuit 101, and second capacitor subcircuit 102.
Referring to fig. 1, the first capacitor sub-circuit 101 includes a first collection point 1011, a second collection point 1014, a plurality of first capacitors 1013, and a plurality of first switch groups 1012 corresponding to the plurality of first capacitors 1013 one by one, both ends of each first capacitor 1013 connected in series with the corresponding first switch group 1012 are respectively connected to the first collection point 1011 and the second collection point 1014, and the second collection point 1014 is connected to the first end of the exciting inductor 103. The second capacitor sub-circuit 102 includes a third collection point 1021, a fourth collection point 1024, a plurality of second capacitors 1023, and a plurality of second switch groups 1022 corresponding to the second capacitors 1023 one by one, wherein two ends of each second capacitor 1023 connected in series with the corresponding second switch group 1022 are respectively connected to the third collection point 1021 and the fourth collection point 1024, and the fourth collection point 1024 is connected to the second end of the exciting inductor 103. Wherein different resonant frequencies of LC tank circuit 100 may be implemented by different combinations of first switch set 1012 and second switch set 1022.
Specifically, referring to fig. 1, LC tank circuit 100 may be formed into a closed loop by controlling at least one of the plurality of first switch sets 1012 to close and at least one of the plurality of second switch sets 1022 to close. The first collection point 1011 and the third collection point 1021 can be used for inputting a preset waveform signal, such as a sine wave signal, a square wave signal, etc., controlling the frequency change of the preset waveform signal, recording the bus current corresponding to each frequency, obtaining the frequency corresponding to the maximum bus current, and calculating the actual inductance value of the exciting inductance coil 103 according to the frequency and the capacitance value of the closed loop. When the target resonant frequency is required, a required capacitance value can be obtained according to the target resonant frequency and the actual inductance value, and the first switch group 1012 and the second switch group 1022 which need to be closed can be determined according to the capacitance value. Therefore, the reliable adjustment of the resonance frequency can be realized, the problem of resonance point deviation is solved, and the stability and the use effect of the water processor are improved.
In some embodiments of the present invention, as shown in fig. 2, the first switch group 1012 includes a first switch K1 and a second switch K2, wherein a first end of the first switch K1 is connected to the first collection point 1011, a second end of the first switch K1 is connected to a first end of the second switch K2 through a corresponding first capacitor 1013, and a second end of the second switch K2 is connected to the second collection point 1014.
Specifically, referring to fig. 2, the first switch K1 and the second switch K2 may be relays and may be controlled by the same switch control signal S1, i.e., the switch control signal S1 may control the first switch K1 and the second switch K2 to be simultaneously closed and simultaneously opened. It should be noted that, fig. 2 is taken as an example of four first capacitors 1013 (i.e., capacitors C1, C2, C3, and C4), the number of the first capacitors 1013 may be other numbers, such as three, two, five, etc., and the first switch group 1012 may include one or more switches connected in series with the first capacitors 1013, where a plurality of switches may be connected in parallel or in series, as desired.
In some embodiments, as shown in fig. 2, the second switch group 1022 includes a third switch K3 and a fourth switch K4, a first end of the third switch K3 is connected to the third collection point 1021, a second end of the third switch K3 is connected to a first end of the fourth switch K4 through a corresponding second capacitor 1023, and a second end of the fourth switch K4 is connected to the fourth collection point 1024.
Specifically, referring to fig. 2, the third switch K3 and the fourth switch K4 may be relays and may be controlled by the same switch control signal S5, i.e., the switch control signal S5 may control the third switch K3 and the fourth switch K4 to be simultaneously turned on and simultaneously turned off. It should be noted that, fig. 2 is shown by taking four second capacitors 1023 (i.e., capacitors C5, C6, C7, and C8) as an example, the number of the second capacitors 1023 may be other numbers, such as three, two, five, etc., and the second switch group 1022 may include one or more switches connected in series with the second capacitors 1023, where a plurality of switches may be connected in parallel or in series.
Based on the LC oscillating circuit of the above embodiment, the present invention proposes a method for estimating inductance parameters.
Fig. 3 is a flowchart of a method for estimating inductance parameters according to an embodiment of the present invention.
As shown in fig. 3, the method for estimating the inductance parameter includes:
s301, controlling at least one of a plurality of first switch groups in the LC oscillating circuit to be closed, and controlling at least one of a plurality of second switch groups in the LC oscillating circuit to be closed, so that the LC oscillating circuit forms a closed loop.
S302, obtaining a first resonance frequency interval according to the capacitance value in the closed loop and the design inductance value of the exciting inductance coil.
In some embodiments of the present invention, the design inductance is a fixed value, and the obtaining the first resonant frequency interval according to the capacitance in the closed loop and the design inductance of the exciting inductor includes: calculating a first resonant frequency according to the capacitance value in the closed loop and the design inductance value of the exciting inductance coil; calculating a difference value between the first resonant frequency and a first preset frequency, and calculating a sum value between the first resonant frequency and a second preset frequency; and taking the interval formed by the sum of the differences as a first resonance frequency interval.
Specifically, the first resonant frequency may be according to the formula: f=1/[ 2pi ] v (LC) ] where L represents an inductance value, C represents a capacitance value, and f represents a resonance frequency. The calculated first resonant frequency may be denoted as F0, the first preset frequency as F1, and the second preset frequency as F2, and the first resonant frequency interval [ F1, F2] may be obtained as [ F0-F1, f0+f2]. Wherein, f1 and f2 are both larger than 0, and the values can be equal or unequal, and can be specifically set according to the needs.
In other embodiments of the present invention, the design inductance is a range of inductance values, and the first resonant frequency interval is obtained according to the capacitance value in the closed loop and the design inductance value of the exciting inductance coil, including: and calculating to obtain a first resonant frequency interval according to the capacitance value in the closed loop and the range limit value corresponding to the design inductance value of the exciting inductance coil.
S303, inputting a preset waveform signal to the LC oscillating circuit through the first collecting point and the third collecting point, controlling the frequency of the preset waveform signal to change in a first frequency interval, and recording the bus current when each change occurs, wherein the first frequency interval comprises a first resonant frequency interval.
In some embodiments of the present invention, controlling the frequency of the preset waveform signal to vary in a first frequency interval includes: and controlling the frequency of the preset waveform signal to change in a first frequency interval according to the preset step length.
The preset waveform signal can be a sine wave signal or a square wave signal; the value of the preset step length can be set according to the requirement, and can be a fixed value or a variable determined according to the bus current, for example, the preset step length can be inversely related to the bus current, that is, the larger the bus current is, the smaller the preset step length is, so that the frequency precision corresponding to the maximum bus current can be improved. The first frequency interval may be determined according to the first resonant frequency interval, for example, the first resonant frequency interval is [ F1, F2], and then the first frequency interval is [ F1-w1, f2+w2], where w1 and w2 are positive values and may be equal or unequal, and the specific value may be set according to needs.
In particular, LC tank circuits may be used in water processors. When the water processor works, a preset waveform signal can be input to the LC oscillating circuit, and the frequency of the preset waveform signal can be controlled to change in a first frequency interval according to a preset step length. In the frequency change process of the preset waveform signal, the bus current corresponding to each frequency can be recorded, namely the working current of the water processor can be the current of the power supply main circuit of the water processor.
S304, calculating the actual inductance value of the exciting inductance coil according to the frequency point corresponding to the maximum value of the bus current and the capacitance value in the closed loop.
Specifically, in the actual product production process, parameters of the exciting inductance coil (i.e., the actual inductance value) are affected by the winding process and the magnetic permeability of the ferrite core, so that the inductance parameters are changed and are not in accordance with the theoretical values (i.e., the designed inductance values). Therefore, the determination of the actual inductance value of the exciting inductance coil is beneficial to determining the accurate resonant frequency of the LC oscillating circuit, accurately adjusting the output power of the product, ensuring the output intensity of the electromagnetic field and ensuring the consistency and the use effect of the product.
After obtaining the frequency point corresponding to the maximum value of the bus current, substituting the frequency point and the capacitance value in the closed loop into the following formula: f=1/[ 2pi ] (LC) ], and calculating to obtain an actual inductance value of the exciting inductance coil.
It should be noted that, for other specific implementations of the method for estimating an inductance parameter according to the embodiment of the present invention, reference may be made to specific implementations of the LC oscillating circuit according to the embodiment of the present invention.
Based on the LC oscillating circuit of the embodiment, the invention also provides a self-adaptive adjusting method of the resonant frequency.
Fig. 4 is a flow chart of a method of adaptive tuning of resonant frequency in accordance with an embodiment of the present invention.
As shown in fig. 4, the adaptive adjustment method of the resonance frequency includes:
s401, determining a target resonant frequency.
The target resonant frequency is the required resonant frequency of the LC oscillating circuit, can be set empirically and is also determined according to the actual working requirement of the water processor.
S402, determining a target first switch group from a plurality of first switch groups and a target second switch group from a plurality of second switch groups according to the target resonant frequency and the actual inductance value of the exciting inductance coil in the LC oscillating circuit, wherein the actual inductance value is obtained according to the inductance parameter estimation method of the embodiment.
In some embodiments of the present invention, determining a target first switch group from a plurality of first switch groups and determining a target second switch group from a plurality of second switch groups based on a target resonant frequency and an actual inductance value of an exciting inductor in an LC tank circuit includes: calculating a target capacitance value according to the target resonant frequency and the actual inductance value; and determining a target first switch group and a target second switch group according to the target capacitance value.
Specifically, the target resonant frequency and the actual inductance value of the excitation inductor in the LC tank circuit may be substituted into the equation: f=1/[ 2pi ] (LC) ], and calculating to obtain a target capacitance value. And then searching a preset corresponding relation (namely, the corresponding relation between the capacitance value and the switch group combination), and determining the switch group combination corresponding to the target capacitance value to obtain a target first switch group and a target second switch group.
S403, controlling the target first switch group and the target second switch group to be closed.
It should be noted that, for other specific implementations of the method for adaptively adjusting the resonant frequency according to the embodiment of the present invention, reference may be made to specific implementations of the LC oscillating circuit according to the embodiment of the present invention.
For ease of understanding, the resonant frequency adaptation process of the LC tank circuit will be described below with reference to the flowchart shown in fig. 5, taking the LC tank circuit shown in fig. 2 as an example. In the figure, Q1 and Q2 are sine wave or square wave signals of control inputs, S1 to S8 are control signals for controlling on or off of the corresponding switch groups, K1 to K4 are relays or other switches in the corresponding switch groups, and C1 to C8 are capacitors (i.e., the first capacitor 1013 or the second capacitor 1023) in the LC oscillating circuit.
Specifically, the resonant frequency self-adaptive adjustment process of the LC oscillating circuit is as follows:
s501, determining a resonance frequency interval.
S502, the control signals S1 to S8 output at least two paths of control signals to control at least two paths of switch groups to be closed, so that the LC oscillating circuit forms a closed loop, and a circuit capacity value C is calculated.
At least two paths of control signals from S1 to S8 can be randomly selected.
Specifically, the control signals S1, S2, S3, S4 control at least one path K1, K2 to be in a closed state, the control signals S5, S6, S7, S8 control at least one path K3, K4 to be in a closed state, and the capacitance value C in the circuit after the series connection is calculated according to the capacitance of the actually closed circuit.
S503, knowing the closed loop capacitance C and the estimated inductance range of the exciting inductance, deducing the first resonant frequency interval F1, F2.
S504, a first frequency interval of Q1 and Q2 is given, the range [ F1-w1, F2+w2], w1 and w2 are constants, and the size is set according to actual needs.
S505, controlling the frequency of Q1 and Q2 to change in the interval [ F1-w1, F2+w2], wherein the step length of the frequency change is S, and correspondingly collecting bus current data corresponding to the frequency change.
S506, finding out the frequency point corresponding to the maximum current from the bus current data, namely the resonant frequency F in the LC oscillating circuit.
Specifically, the current I of the bus corresponding to the frequency change, the frequency point and the collected bus current data are collected and stored into an array, and the frequency point corresponding to the maximum current is obtained through array sequencing.
S507, substituting the resonant frequency F and the capacitance C into a resonant frequency calculation formula: f=1/[ 2pi ] (LC) ], and the inductance L under the actual working condition is calculated.
S508, the control signals S1 to S8 control the switches K1, K2, K3 and K4 to be opened or closed, so that the LC oscillating circuits form a closed loop and form different capacitance-capacitance combinations, and capacitance combinations in the LC oscillating circuits corresponding to the different combinations of the control signals S1 to S8 are correspondingly stored into corresponding arrays.
S509, according to the resonance frequency interval determined in S501 and the inductance L calculated in S507 according to the actual working condition, determining the capacitance value of a reasonable LC oscillating circuit, comparing the capacitance value with the capacitance value in S508, selecting the optimal capacitance value combination, and selecting the corresponding control signal combination according to the capacitance value combination, thereby realizing the self-adaptive adjustment of the resonance frequency under the actual working condition.
The invention also provides a water processor corresponding to the LC oscillating circuit of the embodiment.
Fig. 6 is a block diagram of a water treatment apparatus according to an embodiment of the present invention.
As shown in fig. 6, the water processor 600 includes the LC oscillating circuit 100 and the controller 700 based on the above-described embodiments.
In this embodiment, as shown in fig. 7, the controller 700 includes a processor 701, a memory 703, and a computer program stored on the memory, which when executed by the processor, implements the method of estimating the inductance parameter in the above embodiment, or implements the method of adaptively adjusting the resonance frequency in the above embodiment. The processor 701 is coupled to a memory 703, such as via a bus 702. Optionally, the controller 700 may also include a transceiver 704. It should be noted that, in practical applications, the transceiver 704 is not limited to one, and the structure of the controller 700 is not limited to the embodiment of the present invention.
The Processor 701 may be a CPU (Central Processing Unit ), general purpose Processor, DSP (DIGITAL SIGNAL Processor ), ASIC (Application SPECIFIC INTEGRATED Circuit), FPGA (Field Programmable GATE ARRAY ) or other programmable logic device, transistor logic device, hardware component, or any combination thereof. Which may implement or perform the various exemplary logical blocks, modules, and circuits described in connection with the present disclosure. The processor 701 may also be a combination that performs computing functions, such as including one or more microprocessors, a combination of a DSP and a microprocessor, or the like.
Bus 702 may include a path to transfer information between the components. Bus 702 may be a PCI (PERIPHERAL COMPONENT INTERCONNECT, peripheral component interconnect standard) bus, or an EISA (Extended Industry Standard Architecture ) bus, or the like. Bus 702 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown in fig. 7, but not only one bus or one type of bus.
The memory 703 is used for storing a computer program corresponding to the method of estimating an inductance parameter or the method of adaptively adjusting a resonance frequency according to the above embodiment of the present invention, which is controlled to be executed by the processor 701. The processor 701 is configured to execute a computer program stored in the memory 703 to implement what is shown in the foregoing method embodiments.
Among them, the controller 700 includes, but is not limited to: mobile terminals of mobile phones, notebook computers, PAD (tablet computers), etc., and stationary terminals of desktop computers, etc. The controller 700 shown in fig. 7 is only an example and should not be construed as limiting the functionality and scope of use of the embodiments of the present invention.
In summary, the oscillating circuit, the parameter estimation method, the frequency adjustment method and the water processor of the embodiment of the invention adjust the switch group of the LC oscillating circuit by estimating the actual inductance value required by the exciting inductance coil and combining the target resonant frequency so as to modify the capacitance of the LC oscillating circuit to a proper capacitance value. Therefore, the resonance frequency in the LC oscillating circuit can be adjusted, the problem of resonance point deviation is solved, the stability of the water processor is further improved, and the use effect of the water processor is improved.
It should be noted that the logic and/or steps represented in the flowcharts or otherwise described herein, for example, may be considered as a ordered listing of executable instructions for implementing logical functions, and may be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). In addition, the computer readable medium may even be paper or other suitable medium on which the program is printed, as the program may be electronically captured, via, for instance, optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner, if necessary, and then stored in a computer memory.
It is to be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (10)
1. An LC oscillating circuit, comprising:
exciting an inductance coil;
The first capacitor sub-circuit comprises a first collection point, a second collection point, a plurality of first capacitors and a plurality of first switch groups corresponding to the first capacitors one by one, wherein two ends of each first capacitor after being connected in series with the corresponding first switch group are respectively connected with the first collection point and the second collection point, and the second collection point is connected with the first end of the excitation inductance coil;
The second capacitor sub-circuit comprises a third collection point, a fourth collection point, a plurality of second capacitors and a plurality of second switch groups which are in one-to-one correspondence with the second capacitors, two ends of each second capacitor, which are connected in series with the corresponding second switch group, are respectively connected with the third collection point and the fourth collection point, and the fourth collection point is connected with the second end of the excitation inductance coil;
Wherein different resonant frequencies of the LC tank circuit are achieved by different combinations of the first switch set and the second switch set.
2. The LC tank of claim 1, wherein said first switch set comprises a first switch and a second switch, a first end of said first switch being connected to said first junction, a second end of said first switch being connected to a first end of said second switch by a corresponding first capacitance, a second end of said second switch being connected to said second junction.
3. The LC tank of claim 1, wherein said second switch set comprises a third switch and a fourth switch, a first end of said third switch being connected to said third junction, a second end of said third switch being connected to a first end of said fourth switch via a corresponding second capacitance, a second end of said fourth switch being connected to said fourth junction.
4. A method of estimating an inductance parameter for an LC tank circuit according to any of claims 1-3, the method comprising:
controlling at least one of a plurality of first switch groups in the LC oscillating circuit to be closed, and controlling at least one of a plurality of second switch groups in the LC oscillating circuit to be closed, so that the LC oscillating circuit forms a closed loop;
obtaining a first resonant frequency interval according to the capacitance value in the closed loop and the design inductance value of the exciting inductance coil;
inputting a preset waveform signal to the LC oscillating circuit through the first collecting point and the third collecting point, controlling the frequency of the preset waveform signal to change in a first frequency interval, and recording bus current when each change occurs, wherein the first frequency interval comprises the first resonant frequency interval;
And calculating the actual inductance value of the exciting inductance coil according to the frequency point corresponding to the maximum value of the bus current and the capacitance value in the closed loop.
5. The method of estimating an inductance parameter according to claim 4, wherein the obtaining a first resonance frequency interval from the capacitance value in the closed loop and the designed inductance value of the excitation inductance coil includes:
Calculating a first resonant frequency according to the capacitance value in the closed loop and the design inductance value of the exciting inductance coil;
calculating a difference value between the first resonant frequency and a first preset frequency, and calculating a sum value between the first resonant frequency and a second preset frequency;
and taking a section formed by the difference value and the sum value as the first resonance frequency section.
6. The method of claim 4, wherein controlling the frequency of the predetermined waveform signal to vary between a first frequency interval comprises:
And controlling the frequency of the preset waveform signal to change in the first frequency interval according to a preset step length.
7. The method of claim 4, wherein the predetermined waveform signal is a sine wave signal or a square wave signal.
8. A method of adaptive tuning of a resonant frequency for an LC tank circuit according to any one of claims 1-3, the method comprising:
determining a target resonant frequency;
Determining a target first switch group from a plurality of first switch groups and a target second switch group from a plurality of second switch groups according to the target resonant frequency and an actual inductance value of an exciting inductance coil in the LC oscillating circuit, wherein the actual inductance value is obtained according to the inductance parameter estimation method of any one of claims 4 to 7;
And controlling the target first switch group and the target second switch group to be closed.
9. The method of claim 8, wherein determining the target first switch group from the plurality of first switch groups and determining the target second switch group from the plurality of second switch groups based on the target resonant frequency and an actual inductance value of the excitation inductor in the LC tank circuit comprises:
calculating a target capacitance value according to the target resonance frequency and the actual inductance value;
and determining the target first switch group and the target second switch group according to the target capacitance value.
10. A water treatment apparatus, comprising:
A LC tank circuit according to any one of claims 1-3;
A controller comprising a memory, a processor and a computer program stored on the memory, which, when executed by the processor, implements the method of estimating an inductance parameter according to any one of claims 4-7 or implements the method of adaptively adjusting a resonance frequency according to claim 8 or 9.
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| CN202410845991.7A CN118399895B (en) | 2024-06-27 | Oscillator circuit, parameter estimation method, frequency adjustment method, and water processor |
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