Frequency adjusting method and device for radio frequency communication system and radio frequency circuit

Abstract

The invention relates to the technical field of integrated circuits, and discloses a frequency regulation method for a radio frequency communication system, which comprises the following steps: acquiring a load state of the radio frequency communication system under the current system frequency; determining a target system frequency of the radio frequency communication system according to the load state under the condition that the load state meets the alarm triggering condition; and performing adaptive frequency adjustment on the current system frequency according to the target system frequency, so that the adjusted load state does not meet the alarm triggering condition. According to the method, adaptive regulation and control of the system frequency of the radio frequency communication system under the large load can be realized, and the working distance of passive radio frequency communication can be increased. The invention further discloses a frequency adjusting device for the radio frequency communication system and a radio frequency circuit.

Description

Technical Field

[0001] The present application relates to the field of integrated circuit technology, for example, to a frequency adjustment method and device, and a radio frequency circuit for a radio frequency communication system. Background Art

[0002] At present, with the rapid development of science and technology, radio frequency communication technology has played a wide and irreplaceable role in the field of wireless mobile communications. Various contactless cards are widely used around the world, such as bus cards, access cards, attendance cards and bank cards.

[0003] In passive RF communication applications, in certain specific scenarios, the power consumption of the RF system is relatively high, resulting in a shortened working distance of the passive RF communication.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0005] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0006] The embodiments of the present disclosure provide a frequency adjustment method, device and radio frequency circuit for a radio frequency communication system to increase the working distance of passive radio frequency communication.

[0007] In some embodiments, the method includes: obtaining the load state of the radio frequency communication system under the current system frequency; when the load state meets the alarm triggering condition, determining the target system frequency of the radio frequency communication system according to the load state; and adaptively adjusting the current system frequency according to the target system frequency so that the adjusted load state does not meet the alarm triggering condition.

[0008] In some embodiments, the current system frequency is adaptively frequency adjusted according to the target system frequency, including: determining a first clock source that matches the target system frequency according to the target system frequency; inputting the first clock source into a divider to obtain a first frequency division coefficient corresponding to the first clock source; and adjusting the current system frequency according to the first frequency division coefficient.

[0009] In some embodiments, the current system frequency is adaptively frequency adjusted according to the target system frequency, including: obtaining a frequency difference between the target system frequency and the current system frequency; determining a control signal according to the frequency difference and a proportional-integral-differential algorithm; when the control signal indicates a frequency increase requirement, determining a clock source higher than the target system frequency as a second clock source and obtaining a second division coefficient corresponding to the second clock source, and performing a frequency adjustment operation on the current system frequency according to the second division coefficient; or, when the control signal indicates a frequency reduction requirement, determining a clock source lower than the target system frequency as a third clock source and obtaining a third clock division coefficient corresponding to the third clock source, and performing a frequency adjustment operation on the current system frequency according to the third clock division coefficient.

[0010] In some embodiments, a control signal is determined based on the frequency difference and a proportional-integral-differential algorithm, including: determining the proportional term, integral term, and differential term of the proportional-integral-differential algorithm based on the frequency difference; and determining the control signal based on the proportional term, integral term, and differential term.

[0011] In some embodiments, determining a target system frequency of a radio frequency communication system based on a load state includes: determining a target alarm coefficient corresponding to the load state based on the load state; determining a set frequency division coefficient for the radio frequency communication system to update the radio frequency communication system from an initial system frequency to a current system frequency; determining a fourth frequency division coefficient based on the product of the target alarm coefficient and the set frequency division coefficient; and obtaining the target system frequency of the radio frequency communication system based on a ratio of the current system frequency to the fourth frequency division coefficient.

[0012] In some embodiments, the load state includes load voltage or load current, and the target alarm coefficient corresponding to the load state is determined according to the load state, including: obtaining a first correspondence between the load voltage and the voltage alarm coefficient, and determining the target alarm coefficient corresponding to the load voltage according to the first correspondence, and the absolute value of the load voltage is negatively correlated with the voltage alarm coefficient; or, obtaining a second correspondence between the load current and the current alarm coefficient, and determining the target alarm coefficient corresponding to the load current according to the second correspondence, and the absolute value of the load current is positively correlated with the current alarm coefficient.

[0013] In some embodiments, the frequency adjustment device includes: a power detection module, configured to obtain the load status of the radio frequency communication system under the current system frequency; a frequency control module, configured to determine the target system frequency of the radio frequency communication system according to the load status when the load status meets the alarm triggering condition; and a frequency adjustment module, configured to perform adaptive frequency adjustment on the current system frequency according to the target system frequency so that the adjusted load status does not meet the alarm triggering condition.

[0014] In some embodiments, the frequency adjustment module includes: a clock selection submodule, configured to determine a first clock source that matches the target system frequency based on the target system frequency; a frequency division submodule, configured to input the clock source into the divider to obtain a clock division coefficient corresponding to the first clock source; and a frequency adaptive adjustment submodule, configured to adjust the current system frequency according to the first frequency division coefficient.

[0015] In some embodiments, the frequency adjustment device includes a processor and a memory storing program instructions, and the processor is configured to execute the frequency adjustment method for the radio frequency communication system as described above when running the program instructions.

[0016] In some embodiments, a radio frequency circuit includes: a radio frequency circuit body; and a frequency adjustment device for a radio frequency communication system as described above, installed in the radio frequency circuit body.

[0017] The frequency adjustment method, device and radio frequency circuit for a radio frequency communication system provided by the embodiments of the present disclosure can achieve the following technical effects:

[0018] The disclosed embodiment obtains the current system frequency of the radio frequency communication system and the load status at the current system frequency. If the load status meets the alarm triggering condition, it indicates that the radio frequency communication system is configured with a load device that consumes high power or has a long continuous working time. At this time, if the current system frequency is maintained, the system power consumption will increase. For this reason, the disclosed embodiment determines the target system frequency of the radio frequency communication system according to the load status, and adaptively adjusts the current system frequency according to the target system frequency to reduce the system power consumption under high load operation through corresponding frequency modulation operations, until the load status after frequency modulation does not meet the alarm triggering condition. Through the above hardware circuit design, the disclosed embodiment can realize the adaptive control of the system frequency of the radio frequency communication system under large loads, thereby reducing the system power consumption and increasing the working distance of passive radio frequency communication.

[0019] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0021] Figure 1 is a schematic diagram of a frequency adjustment device for a radio frequency communication system provided by an embodiment of the present disclosure;

[0022] Figure 2is a schematic diagram of a frequency adjustment method for a radio frequency communication system provided by an embodiment of the present disclosure;

[0023] Figure 3 is a schematic diagram of another frequency adjustment method for a radio frequency communication system provided by an embodiment of the present disclosure;

[0024] Figure 4 is a schematic diagram of another frequency adjustment method for a radio frequency communication system provided by an embodiment of the present disclosure;

[0025] Figure 5 is a schematic diagram of another frequency adjustment method for a radio frequency communication system provided by an embodiment of the present disclosure;

[0026] Figure 6 is an application schematic diagram provided by an embodiment of the present disclosure;

[0027] Figure 7 is a schematic diagram of a frequency adjustment device for a radio frequency communication system provided by an embodiment of the present disclosure;

[0028] Figure 8 It is a schematic diagram of another frequency adjustment device for a radio frequency communication system provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0029] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0030] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0031] Unless otherwise stated, the term "plurality" means two or more.

[0032] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0033] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0034] The term "correspondence" may refer to an association relationship or a binding relationship. The correspondence between A and B means that there is an association relationship or a binding relationship between A and B.

[0035] Combination Figure 1 As shown, the embodiment of the present disclosure provides a frequency adjustment device 200 for a radio frequency communication system, including a power detection module 201, a frequency control module 202, and a frequency adjustment module 203. The power detection module 201 is configured to obtain the load state of the radio frequency communication system under the current system frequency. The frequency control module 202 is configured to determine the target system frequency of the radio frequency communication system according to the load state when the load state meets the alarm triggering condition. The frequency adjustment module 203 is configured to perform adaptive frequency adjustment on the current system frequency according to the target system frequency, so that the adjusted load state does not meet the alarm triggering condition.

[0036] Based on the hardware configuration of the frequency adjustment device for the radio frequency communication system, combined with Figure 2 As shown, the embodiment of the present disclosure provides a frequency adjustment method for a radio frequency communication system, comprising:

[0037] S01, the radio frequency circuit obtains a load state of the radio frequency communication system at a current system frequency.

[0038] S02, when the load state meets the alarm triggering condition, the radio frequency circuit determines the target system frequency of the radio frequency communication system according to the load state.

[0039] In this step, the load state includes the load voltage or the load current. The RF circuit determines whether the load state meets the alarm triggering condition in the following manner: when the load voltage is greater than or equal to the voltage critical alarm value or the load current is less than or equal to the current critical alarm value, the RF circuit determines that the load state meets the alarm triggering condition; when the load voltage is less than the voltage critical alarm value or the load current is greater than the current critical alarm value, the RF circuit determines that the load state does not meet the alarm triggering condition. It should be noted that the voltage critical alarm value and the current critical alarm value are determined by the RF circuit according to the power consumption of the load equipment of the RF communication system and / or the continuous working time.

[0040] S03, the radio frequency circuit performs adaptive frequency adjustment on the current system frequency according to the target system frequency, so that the load state after adjustment does not meet the alarm triggering condition.

[0041] Using the frequency adjustment method for a radio frequency communication system provided by an embodiment of the present disclosure, the embodiment of the present disclosure obtains the current system frequency of the radio frequency communication system and the load status at the current system frequency. If the load status meets the alarm triggering condition, it indicates that the radio frequency communication system is configured with a load device that consumes a lot of power or has a long continuous working time. At this time, if the current system frequency is maintained, the system power consumption will increase. For this reason, the embodiment of the present disclosure determines the target system frequency of the radio frequency communication system according to the load status, and adaptively adjusts the current system frequency according to the target system frequency to reduce the system power consumption under heavy load operation through corresponding frequency modulation operations, until the load status after frequency modulation does not meet the alarm triggering condition. Through the above hardware circuit design, the embodiment of the present disclosure can realize the adaptive regulation of the system frequency of the radio frequency communication system under large loads, thereby reducing the system power consumption and increasing the working distance of passive radio frequency communication.

[0042] Optionally, combined Figure 3 As shown, the RF circuit performs adaptive frequency adjustment on the current system frequency according to the target system frequency, including:

[0043] S11, the radio frequency circuit determines a first clock source that matches the target system frequency according to the target system frequency.

[0044] S12, the radio frequency circuit inputs a first clock source to a frequency divider to obtain a first frequency division coefficient corresponding to the first clock source.

[0045] S13, the radio frequency circuit adjusts the current system frequency according to the first frequency division coefficient.

[0046] In this way, after determining the target system frequency of the radio frequency communication system, the embodiment of the present disclosure determines a first clock source that matches the target system frequency, and then inputs the first clock source into the frequency divider to obtain a first frequency division coefficient corresponding to the first clock source. Finally, the embodiment of the present disclosure adjusts the current system frequency according to the first frequency division coefficient. The embodiment of the present disclosure determines the frequency division coefficient by selecting a clock source that matches the target system frequency to achieve coarse-grained adjustment of the system frequency.

[0047] Combination Figure 4 As shown, the RF circuit performs adaptive frequency adjustment on the current system frequency according to the target system frequency, including:

[0048] S21, the radio frequency circuit obtains a frequency difference between the target system frequency and the current system frequency.

[0049] S22, the radio frequency circuit determines the control signal according to the frequency difference and the proportional integral differential algorithm.

[0050] S23, when the control signal indicates a frequency increase requirement, the RF circuit determines a clock source higher than the target system frequency as a second clock source and obtains a second frequency division coefficient corresponding to the second clock source, and performs frequency modulation on the current system frequency according to the second frequency division coefficient.

[0051] S24, when the control signal indicates a frequency reduction requirement, the RF circuit determines a clock source lower than the target system frequency as a third clock source and obtains a third clock division coefficient corresponding to the third clock source, and performs frequency modulation on the current system frequency according to the third clock division coefficient.

[0052] In this way, after the embodiment of the present disclosure obtains the frequency difference between the target system frequency and the current system frequency, the control signal is determined according to the frequency difference and the proportional-integral-differential algorithm. If the control signal indicates that there is a need for frequency increase, the RF circuit determines a clock source higher than the target system frequency as the second clock source and obtains the second frequency division coefficient corresponding to the second clock source, thereby performing a frequency modulation operation on the current system frequency based on the second frequency division coefficient. If the control signal indicates that there is a need for frequency reduction, the RF circuit determines a clock source lower than the target system frequency as the third clock source and obtains the third clock frequency division coefficient corresponding to the third clock source, thereby performing a frequency modulation operation on the current system frequency based on the third clock frequency division coefficient. The embodiment of the present disclosure can adaptively select the clock source and the clock frequency division coefficient according to the control signal in the proportional-integral-differential algorithm, thereby realizing fine-grained adjustment of the system frequency of the RF communication system.

[0053] Optionally, the radio frequency circuit determines the control signal according to the frequency difference and the proportional integral differential algorithm, including:

[0054] The radio frequency circuit determines the proportional term, integral term and differential term of the proportional-integral-differential algorithm according to the frequency difference.

[0055] The radio frequency circuit determines the control signal according to the proportional term, the integral term and the differential term.

[0056] In this way, the embodiment of the present disclosure can determine the proportional term, integral term and differential term of the proportional-integral-differential algorithm according to the frequency difference to obtain a control signal, thereby providing a basis for subsequent system frequency control methods.

[0057] Optionally, the RF circuit determines the proportional term, integral term, and differential term of the proportional-integral-differential algorithm according to the frequency difference, including: the RF circuit determines the proportional term according to the product of the frequency difference e(t) and the proportional coefficient, determines the integral term according to the product of Σe(t) and the integral coefficient, and determines the differential term according to the product of the difference between e(t) and e(t-1) and the differential coefficient. Wherein, e(t) represents the frequency difference between the target system frequency and the system frequency at the current moment, and the system frequency at the current moment is the current system frequency; Σe(t) represents the cumulative frequency difference from time zero to the current moment t, and e(t-1) represents the frequency difference with the previous moment (i.e., t-1).

[0058] The RF circuit determines the control signal based on the proportional term, integral term, and differential term, including:

[0059] The RF circuit sums the proportional term and the integral term and then subtracts the sum from the differential term to determine the control signal.

[0060] In a specific embodiment, the radio frequency circuit adjusts the current system frequency according to the first frequency division coefficient by specifically performing the following steps:

[0061] First, the RF circuit initializes the three parameters of the proportional-integral-differential algorithm: the proportional coefficient Kp, the integral coefficient Ki and the differential coefficient Kd, and sets the initial value of the frequency difference e(0) to 0 and the initial integral term ∫e(t)dt and the previous error e(t-1) to 0.

[0062] Then, the RF circuit obtains the target system frequency F tar With the current system frequency F cur The frequency difference e(t) is obtained, and the control signal u(t) under the proportional integral differential algorithm is determined based on the three parameters and the frequency difference. tar -F cur u(t)=P+ID, Σe(t) represents the cumulative frequency difference from time zero to the current time t.

[0063] Proportional term: P = Kp*e(t);

[0064] Integral term: I = Ki*Σe(t);

[0065] Differential term: D = Kd*(e(t)-e(t-1)).

[0066] Secondly, when u(t) indicates that frequency upconversion is required, the RF circuit determines that the frequency is higher than F tar The clock source is used as the second clock source, and the current system frequency F is adjusted according to the second frequency division coefficient corresponding to the second clock source. cur .

[0067] In the case where u(t) indicates that a frequency reduction is required, the RF circuit determines that the frequency is below F tar The clock source is used as the third clock source, and the current system frequency F is adjusted according to the third frequency division coefficient corresponding to the third clock source. cur .

[0068] Again, the RF circuit updates the previous frequency difference e(t-1) to the current frequency difference e(t), updates the integral term ∫e(t)dt to the new cumulative frequency difference, and updates the current system frequency.

[0069] Finally, the RF circuit obtains the load voltage. If the load voltage is greater than or equal to the voltage critical alarm value, the process returns to the step of obtaining the frequency difference e(t) until the load voltage is less than the voltage critical alarm value.

[0070] Combination Figure 5 As shown, the RF circuit determines the target system frequency of the RF communication system according to the load state, including:

[0071] S31, the radio frequency circuit determines a target alarm coefficient corresponding to the load state according to the load state.

[0072] S32, the radio frequency circuit determines a set frequency division coefficient for the radio frequency communication system when the radio frequency communication system updates from the initial system frequency to the current system frequency.

[0073] S33, the radio frequency circuit determines a fourth frequency division coefficient according to the product of the target alarm coefficient and the set frequency division coefficient.

[0074] S34, the radio frequency circuit obtains a target system frequency of the radio frequency communication system according to the ratio of the current system frequency to the fourth frequency division coefficient.

[0075] In this way, when the RF communication system is equipped with a load device with high power consumption or long continuous working time, the system power consumption of the RF communication system will increase. Whether the RF communication system is equipped with the above-mentioned type of load device can be known by detecting its load state. Taking the load state as load voltage as an example, the higher the load voltage at the current system frequency of the RF communication system, the greater the system power consumption. Taking the load state as load current as an example, the smaller the load current at the current system frequency of the RF communication system, the greater the system power consumption. Based on this, the embodiment of the present disclosure can determine the corresponding target alarm coefficient according to the load state at the current system frequency, and determine the fourth frequency division coefficient according to the product of the target alarm coefficient and the set frequency division coefficient after determining the set frequency division coefficient to obtain the target system frequency of the RF communication system according to the fourth frequency division coefficient. The embodiment of the present disclosure can detect the load state at the current system frequency of the RF communication system, determine the target alarm coefficient in stages, and thus accurately obtain the fourth frequency division coefficient, which is conducive to obtaining an accurate and reliable target system frequency, and can improve the accuracy of the adaptive control of the system frequency of the RF communication system under a large load, thereby increasing the working distance of the passive RF communication.

[0076] Optionally, the radio frequency circuit determines a target alarm coefficient corresponding to the load state according to the load state, including:

[0077] The radio frequency circuit obtains a first corresponding relationship between the load voltage and the voltage alarm coefficient, and determines a target alarm coefficient corresponding to the load voltage according to the first corresponding relationship, wherein the absolute value of the load voltage is negatively correlated with the voltage alarm coefficient.

[0078] The radio frequency circuit obtains a second corresponding relationship between the load current and the current alarm coefficient, and determines the target alarm coefficient corresponding to the load current according to the second corresponding relationship, and the absolute value of the load current is positively correlated with the current alarm coefficient.

[0079] In this way, the embodiment of the present disclosure can determine the target alarm coefficient corresponding to the load voltage or the target alarm coefficient corresponding to the load current in a graded manner according to the load voltage and the first corresponding relationship or the load current and the second corresponding relationship, thereby providing an accurate reference system frequency for adaptive control of the system frequency.

[0080] Optionally, the first correspondence between the load voltage and the voltage alarm coefficient may be: different voltage threshold intervals correspond to different levels of voltage alarm coefficients. The larger the voltage upper limit value of the voltage threshold interval corresponding to the absolute value of the load voltage, the smaller the voltage alarm coefficient corresponding to the voltage threshold interval. The smaller the voltage lower limit value of the voltage threshold interval corresponding to the absolute value of the load voltage, the larger the voltage alarm coefficient corresponding to the voltage threshold interval.

[0081] As an example, when the load voltage is U1, the voltage alarm coefficient alarm is 1.

[0082] When the load voltage is U2, the voltage alarm coefficient alarm is 1.5.

[0083] Among them, the voltage lower limit value of the voltage threshold interval corresponding to |U1| is greater than the voltage upper limit value of the voltage threshold interval corresponding to |U2|.

[0084] As another example, when the load current is I1, the current alarm coefficient alarm is 1.5.

[0085] When the load current is I2, the current alarm coefficient alarm is 1.

[0086] Among them, the current lower limit value of the current threshold interval corresponding to |I1| is greater than the current upper limit value of the current threshold interval corresponding to |I2|.

[0087] In practical applications, Figure 6 A timing diagram showing the adaptive frequency adjustment provided by an embodiment of the present disclosure. Figure 6 In the figure, from top to bottom, they represent the load voltage and current system frequency, the voltage alarm signal, and the system frequency after adaptive adjustment.

[0088] The frequency adjustment method for the radio frequency communication system specifically performs the following steps:

[0089] First, the radio frequency circuit obtains a load voltage at a current system frequency of the radio frequency communication system.

[0090] Then, when the load voltage is greater than or equal to the voltage critical alarm value, the RF circuit determines that the load voltage meets the alarm triggering condition and generates a voltage alarm signal.

[0091] The initial level of the voltage alarm signal is low. When the load voltage is equal to the voltage critical alarm value, the voltage alarm signal jumps from low level to high level. When the load voltage is greater than the voltage critical alarm value, the voltage alarm signal remains at a high level. When the load voltage is less than the voltage critical alarm value, the voltage alarm signal jumps from high level to low level.

[0092] Finally, the RF circuit determines the target system frequency of the RF communication system according to the load voltage, and performs adaptive frequency adjustment on the current system frequency according to the target system frequency. When the load voltage is equal to the voltage critical alarm value (the voltage alarm signal jumps from a low level to a high level), the RF circuit performs a frequency reduction operation on the current system frequency to achieve adaptive frequency adjustment until the load voltage is less than the voltage critical alarm value. When the load voltage is less than the voltage critical alarm value (the voltage alarm signal jumps from a high level to a low level), the RF circuit performs a frequency increase operation on the current system frequency to restore it to the current system frequency.

[0093] Optionally, combined Figure 7 As shown, the frequency adjustment module 203 includes a clock selection submodule 2031, a frequency division submodule 2032, and a frequency adaptive adjustment submodule 2033. The clock selection submodule 2031 is configured to determine a first clock source matching the target system frequency according to the target system frequency. The frequency division submodule 2032 is configured to input a clock source to a frequency divider to obtain a clock frequency division coefficient corresponding to the first clock source. The frequency adaptive adjustment submodule 2033 is configured to adjust the current system frequency according to the first frequency division coefficient.

[0094] Combination Figure 8 As shown, the embodiment of the present disclosure also provides a frequency adjustment device 70 for a radio frequency communication system, including a processor (processor) 700 and a memory (memory) 701. Optionally, the device 70 may also include a communication interface (Communication Interface) 702 and a bus 703. Among them, the processor 700, the communication interface 702, and the memory 701 can communicate with each other through the bus 703. The communication interface 702 can be used for information transmission. The processor 700 can call the logic instructions in the memory 701 to execute the frequency adjustment method for the radio frequency communication system of the above embodiment.

[0095] In addition, the logic instructions in the memory 701 described above may be implemented in the form of software functional units and when sold or used as independent products, may be stored in a computer-readable storage medium.

[0096] The memory 701 is a computer-readable storage medium that can be used to store software programs and computer executable programs, such as program instructions / modules corresponding to the method in the embodiment of the present disclosure. The processor 700 executes the functional application and data processing by running the program instructions / modules stored in the memory 701, that is, the frequency adjustment method for the radio frequency communication system in the above embodiment is implemented.

[0097] The memory 701 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application required for at least one function; the data storage area may store data created according to the use of the terminal device, etc. In addition, the memory 701 may include a high-speed random access memory and may also include a non-volatile memory.

[0098] The embodiments of the present disclosure provide a radio frequency circuit, including: a radio frequency circuit body, and the above-mentioned frequency adjustment device 200 (70) for a radio frequency communication system. The frequency adjustment device 200 (70) for a radio frequency communication system is installed on the product body. The installation relationship described here is not limited to placement inside the radio frequency circuit body, but also includes installation connections with other components of the radio frequency circuit, including but not limited to physical connections, electrical connections or signal transmission connections. It can be understood by those skilled in the art that the frequency adjustment device 200 (70) for a radio frequency communication system can be adapted to a feasible radio frequency circuit body, thereby realizing other feasible embodiments.

[0099] An embodiment of the present disclosure provides a computer-readable storage medium storing computer-executable instructions, wherein the computer-executable instructions are configured to execute the frequency adjustment method for a radio frequency communication system.

[0100] The technical solution of the embodiment of the present disclosure can be embodied in the form of a software product, which is stored in a storage medium and includes one or more instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in the embodiment of the present disclosure. The aforementioned storage medium may be a non-transient storage medium, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, and other media that can store program codes.

[0101] The above description and the accompanying drawings fully illustrate the embodiments of the present disclosure so that those skilled in the art can practice them. Other embodiments may include structural, logical, electrical, process and other changes. The embodiments represent only possible changes. Unless explicitly required, separate components and functions are optional, and the order of operation may vary. The parts and features of some embodiments may be included in or replace the parts and features of other embodiments. Moreover, the words used in this application are only used to describe the embodiments and are not used to limit the claims. As used in the description of the embodiments and the claims, unless the context clearly indicates, the singular forms of "a", "an" and "the" are intended to include plural forms as well. Similarly, the term "and / or" as used in this application refers to any and all possible combinations of listings containing one or more associated ones. In addition, when used in the present application, the term "comprise" and its variants "comprises" and / or comprising refer to the presence of stated features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or groups thereof. In the absence of further restrictions, the elements defined by the sentence "comprising a ..." do not exclude the presence of other identical elements in the process, method or device comprising the elements. In this article, each embodiment may focus on the differences from other embodiments, and the same and similar parts between the various embodiments may refer to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method part disclosed in the embodiments, then the relevant parts can refer to the description of the method part.

[0102] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software may depend on the specific application and design constraints of the technical solution. The technicians may use different methods for each specific application to implement the described functions, but such implementations should not be considered to exceed the scope of the embodiments of the present disclosure. The technicians may clearly understand that, for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above may refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here.

[0103] In the embodiments disclosed herein, the disclosed methods and products (including but not limited to devices, equipment, etc.) can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units can be only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between each other shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms. 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 on multiple network units. Some or all of the units may be selected according to actual needs to implement this embodiment. In addition, each functional unit in the embodiment of the present disclosure may be integrated in a processing unit, or each unit may exist physically alone, or two or more units may be integrated in one unit.

[0104] The flowchart and block diagram in the accompanying drawings show the possible architecture, function and operation of the system, method and computer program product according to the embodiment of the present disclosure. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of the code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. In some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, which can depend on the functions involved. In the description corresponding to the flowchart and the block diagram in the accompanying drawings, the operations or steps corresponding to different boxes can also occur in a different order from the order disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, which can depend on the functions involved. Each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented by a dedicated hardware-based system that performs the specified functions or actions, or may be implemented by a combination of dedicated hardware and computer instructions.

Claims

1. A frequency adjustment method for a radio frequency communication system, characterized in that: include: Obtaining the load status of the radio frequency communication system at the current system frequency; When the load state meets the alarm triggering condition, the target system frequency of the radio frequency communication system is determined according to the load state; The current system frequency is adaptively adjusted according to the target system frequency so that the load state after adjustment does not meet the alarm triggering condition.

2. The system frequency adjustment method according to claim 1, characterized in that: Adaptively adjust the current system frequency according to the target system frequency, including: Determine, according to the target system frequency, a first clock source that matches the target system frequency; Inputting a first clock source to the frequency divider to obtain a first frequency division coefficient corresponding to the first clock source; The current system frequency is adjusted according to the first frequency division coefficient.

3. The frequency adjustment method according to claim 1, characterized in that: Adaptively adjust the current system frequency according to the target system frequency, including: Obtain the frequency difference between the target system frequency and the current system frequency; Determine the control signal according to the frequency difference and the proportional integral differential algorithm; In the case where the control signal indicates that there is a need for frequency increase, a clock source higher than the target system frequency is determined as a second clock source and a second frequency division coefficient corresponding to the second clock source is obtained, and a frequency modulation operation is performed on the current system frequency according to the second frequency division coefficient; or When the control signal indicates a frequency reduction requirement, a clock source lower than the target system frequency is determined as a third clock source and a third clock division coefficient corresponding to the third clock source is obtained, and the current system frequency is modulated according to the third clock division coefficient.

4. The frequency adjustment method according to claim 3, characterized in that: According to the frequency difference and proportional integral differential algorithm, the control signal is determined, including: According to the frequency difference, the proportional term, integral term and differential term of the proportional-integral-differential algorithm are determined; The control signal is determined based on the proportional term, integral term and differential term.

5. The frequency adjustment method according to any one of claims 1 to 4, characterized in that: Determine the target system frequency of the RF communication system based on the load status, including: According to the load state, determine the target alarm coefficient corresponding to the load state; Determine the set frequency division coefficient of the radio frequency communication system when the radio frequency communication system is updated from the initial system frequency to the current system frequency; Determine the fourth frequency division coefficient according to the product of the target alarm coefficient and the set frequency division coefficient; According to the ratio of the current system frequency to the fourth frequency division coefficient, the target system frequency of the radio frequency communication system is obtained.

6. The frequency adjustment method according to claim 5, characterized in that: The load state includes load voltage or load current. According to the load state, the target alarm coefficient corresponding to the load state is determined, including: Obtaining a first corresponding relationship between the load voltage and the voltage alarm coefficient, and determining a target alarm coefficient corresponding to the load voltage according to the first corresponding relationship, wherein the absolute value of the load voltage is negatively correlated with the voltage alarm coefficient; or, A second corresponding relationship between the load current and the current alarm coefficient is obtained, and based on the second corresponding relationship, a target alarm coefficient corresponding to the load current is determined, and the absolute value of the load current is positively correlated with the current alarm coefficient.

7. A frequency adjustment device for a radio frequency communication system, characterized in that: include: A power detection module is configured to obtain a load state of the radio frequency communication system at a current system frequency; A frequency control module is configured to determine a target system frequency of the radio frequency communication system according to the load state when the load state meets the alarm triggering condition; The frequency adjustment module is configured to perform adaptive frequency adjustment on the current system frequency according to the target system frequency so that the load state after adjustment does not meet the alarm triggering condition.

8. The frequency adjustment device according to claim 7, characterized in that: The frequency regulation module includes: A clock selection submodule, configured to determine a first clock source matching the target system frequency according to the target system frequency; A frequency division submodule is configured to input a clock source to a frequency divider to obtain a clock frequency division coefficient corresponding to a first clock source; The frequency adaptive adjustment submodule is configured to adjust the current system frequency according to the first frequency division coefficient.

9. A frequency adjustment device for a radio frequency communication system, comprising a processor and a memory storing program instructions, characterized in that: The processor is configured to execute the frequency adjustment method for a radio frequency communication system according to any one of claims 1 to 6 when running the program instructions.

10. A radio frequency circuit, characterized in that: include: Radio frequency circuit body; The frequency adjustment device for a radio frequency communication system according to any one of claims 7 to 9 is installed on the radio frequency circuit body.

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