Gain control circuit and method, circuit board, vehicle-mounted electronic equipment, medium and vehicle

Abstract

The invention provides a gain control circuit and method, a circuit board, a vehicle-mounted electronic device, a computer storage medium and a vehicle, and the gain control circuit comprises a gain adjustment unit and a gain control unit. The gain adjustment unit is used for performing gain adjustment on the antenna radio frequency signal and outputting the antenna radio frequency signal; and the gain control unit is used for adjusting the gain adjustment unit according to the corresponding gain value output by the gain adjustment unit. According to the scheme, the gain adjustment unit is arranged to perform gain adjustment on the antenna radio frequency signal and output the signal, and whether the output corresponding gain value meets the requirement is monitored in real time, so that whether the gain adjustment unit performs adjustment according to the requirement is judged, and the output corresponding gain value meets the requirement after the adjustment of the gain adjustment unit. The gain control circuit can flexibly adjust the gain value of the radio frequency signal of the antenna, thereby avoiding the limitation of the application of the antenna, and improving the universality of the application of the antenna.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a gain control circuit, method, circuit board, vehicle-mounted electronic equipment, computer-readable storage medium and vehicle. Background Art

[0002] With the rapid development of new energy vehicles, smart cars play an increasingly important role in people's lives. Among them, most cars have positioning functions, but the positioning function is based on the antenna for signal reception and transmission. In related technologies, the required configuration of the vehicle is generally achieved by selecting an antenna that meets the gain range. However, due to the required range limit of the antenna gain, many cost-effective antennas cannot be used directly and conveniently, and the versatility of antenna application is low. Summary of the invention

[0003] The present application provides a gain control circuit, method, circuit board, vehicle-mounted electronic equipment, storage medium and vehicle, aiming to solve the problem that antennas in the prior art cannot be universal.

[0004] In a first aspect, the present application provides a gain control circuit, comprising: a gain adjustment unit and a gain control unit;

[0005] The gain adjustment unit is used to adjust the gain of the antenna radio frequency signal and output it;

[0006] The gain control unit is used to adjust the gain adjustment unit according to the gain value corresponding to the output of the gain adjustment unit.

[0007] In a possible implementation of the present application, the antenna radio frequency signal changes dynamically according to the environmental GPS signal.

[0008] In a possible implementation of the present application, the gain adjustment unit includes at least two gain adjustment sub-units;

[0009] The gain control unit is used to determine a target gain adjustment subunit according to a gain value corresponding to the output of the gain adjustment unit, and control the antenna RF signal to be input into the target gain adjustment subunit;

[0010] Wherein, the target gain adjustment subunit is any one of the gain adjustment subunits.

[0011] In a possible implementation of the present application, the gain control unit includes:

[0012] A switch, the switch comprising at least two output terminals, each of the output terminals being connected to the gain adjustment subunit respectively;

[0013] A control subunit is used to control the output end path connected to the target gain adjustment subunit.

[0014] In a possible implementation of the present application, the gain adjustment subunit is an attenuation network.

[0015] In a possible implementation of the present application, it also includes:

[0016] A radio frequency receiving unit, the radio frequency receiving unit is used to receive an antenna radio frequency signal and send the antenna radio frequency signal to the gain adjustment unit;

[0017] The gain control unit is arranged between the gain adjustment unit and the radio frequency receiving unit.

[0018] In a possible implementation of the present application, a positioning receiver module is also included.

[0019] The positioning receiver module is used to receive the antenna radio frequency signal output by the gain adjustment unit; analyze and process the antenna radio frequency signal to obtain position information.

[0020] In a possible implementation of the present application, the gain control circuit further includes a communication unit;

[0021] The communication unit is connected to the positioning receiver module;

[0022] The communication unit is used to receive the position information and perform vehicle positioning processing according to the position information.

[0023] In a second aspect, the present application provides a gain control method, which is applied to a gain control circuit as described in any one of the above, wherein the gain control circuit includes a gain adjustment unit and a gain control unit, and the method includes:

[0024] The gain adjustment unit is adjusted according to the gain value corresponding to the output of the gain adjustment unit.

[0025] In a possible implementation of the present application, adjusting the gain adjustment unit according to the gain value corresponding to the output of the gain adjustment unit includes:

[0026] Obtaining a gain value corresponding to the antenna radio frequency signal output by the gain adjustment unit;

[0027] If the gain value is not within the preset gain range, the gain adjustment unit is adjusted.

[0028] In a possible implementation of the present application, if the gain value is not within a preset gain range, adjusting the gain adjustment unit includes:

[0029] If the gain value is less than the minimum value in the preset gain range, the attenuation value of the gain adjustment unit is increased.

[0030] In a possible implementation of the present application, if the gain value is not within a preset gain range, adjusting the gain adjustment unit includes:

[0031] If the gain value is greater than a maximum value in the preset gain range, the attenuation value of the gain adjustment unit is reduced.

[0032] In a possible implementation of the present application, the gain adjustment unit includes at least two gain adjustment sub-units, and each of the gain adjustment sub-units corresponds to a different attenuation value;

[0033] If the gain value is not within the preset gain range, the gain adjustment unit is adjusted, including

[0034] If the gain value is not within the preset gain range, determining a target attenuation value according to the actual attenuation value of the gain adjustment unit and the attenuation values ​​corresponding to each of the gain adjustment subunits;

[0035] The target gain adjustment subunit corresponding to the target attenuation value is adjusted to a connection state, and other gain adjustment subunits except the target gain adjustment subunit are adjusted to a disconnection state.

[0036] In a third aspect, the present application provides a gain control circuit board, on which the gain control circuit as described in any one of the items is integrated.

[0037] In a fourth aspect, the present application provides an in-vehicle electronic device, wherein the in-vehicle electronic device comprises a gain control circuit as described in any one of the items, or a gain control circuit board as described in the items.

[0038] Optionally, the vehicle-mounted electronic equipment includes:

[0039] one or more processors;

[0040] Memory; and

[0041] One or more applications, wherein the one or more applications are stored in the memory and configured to be executed by the processor to implement the steps in any one of the gain control methods.

[0042] Optionally, it also includes a GPS module power network, a communication module and a CAN network, and the GPS module power network, the communication module and the CAN network are respectively connected to the processor.

[0043] In a fifth aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program is loaded by a processor to execute the steps in any one of the gain control methods described above.

[0044] In a sixth aspect, the present application provides a vehicle, comprising a gain control circuit as described in any one of the items, or a gain control circuit board as described in any one of the items, or an on-board electronic device as described in any one of the items.

[0045] The present application provides a gain control circuit, method, circuit board, vehicle-mounted electronic equipment and vehicle. By setting a gain control circuit, it includes: a gain adjustment unit and a gain control unit; the gain adjustment unit is used to adjust the gain of the antenna RF signal and output it; the gain control unit is used to adjust the gain adjustment unit according to the gain value corresponding to the output of the gain adjustment unit. In this solution, the gain adjustment unit is set to adjust the gain of the antenna RF signal and output it, and monitor in real time whether the gain value corresponding to the output meets the requirements, and then determine whether to adjust the gain adjustment unit according to the requirements, so that the gain value corresponding to the output of the gain adjustment unit after adjustment meets the requirements, that is, the gain control circuit flexibly adjusts the gain value of the antenna RF signal, avoids the limitations of the antenna application, and improves the versatility of the antenna application. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0047] Figure 1 A schematic diagram of the structure of one implementation scheme of a gain control circuit provided in an embodiment of the present application;

[0048] Figure 2 A schematic diagram of another implementation scheme of a gain control circuit provided in an embodiment of the present application;

[0049] Figure 3 A schematic diagram of the structure of one implementation scheme of the gain control circuit provided in this application;

[0050] Figure 4 This is a schematic diagram of an embodiment of a gain control method in an embodiment of the present application;

[0051] Figure 5 A schematic diagram of a flow chart of one implementation of the gain control method provided in this application;

[0052] Figure 6It is a schematic diagram of the structure of an embodiment of the vehicle-mounted electronic equipment provided in the embodiments of the present application.

[0053] in,

[0054] 10. Gain adjustment unit, 101. Gain adjustment subunit, 11. Gain control unit, 110. Switch, 111. Control subunit, 12. Radio frequency receiving unit, 13. Positioning receiver module. DETAILED DESCRIPTION

[0055] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0056] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0057] In the embodiment of the present application, "and / or" describes the association relationship of the associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / ", unless otherwise specified, generally indicates that the associated objects before and after are in an "or" relationship.

[0058] In this application, the word "exemplary" is used to mean "serving as an example, illustration, or illustration." Any embodiment described in this application as "exemplary" is not necessarily to be construed as being preferred or advantageous over other embodiments. The following description is given to enable any person skilled in the art to implement and use the invention. In the following description, details are listed for the purpose of explanation. It should be understood that a person of ordinary skill in the art can recognize that the invention can be implemented without using these specific details. In other instances, well-known structures and processes are not elaborated in detail to avoid obscuring the description of the invention with unnecessary details. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the widest scope consistent with the principles and features disclosed in this application.

[0059] With the great development of new energy vehicles, smart cars play an increasingly important role in people's lives, and T-BOX, as an important component of smart cars, is very important to the intelligence of the whole vehicle. Most T-BOXs have positioning functions, and considering the development cycle and cost, module solutions are generally used to implement them. Because the module has requirements for the gain range of the antenna, not all antennas can meet the requirements. Considering the cost and development cycle, it is generally best to use antennas that have been mass-produced, which can save the cost of research and development and mold opening. However, due to the required limit of antenna gain, many cost-effective antennas cannot be used directly and conveniently.

[0060] Therefore, the embodiments of the present application provide a gain control circuit, method, circuit board, vehicle-mounted electronic equipment, vehicle and computer-readable storage medium (computer-readable storage medium may be referred to as storage medium in its entirety), which are described in detail below.

[0061] For details, see Figure 1 , Figure 1 A schematic diagram of the structure of one implementation scheme of the gain control circuit provided in the embodiment of the present application; specifically, a gain adjustment unit 10 and a gain control unit 11;

[0062] The gain adjustment unit 10 is used to adjust the gain of the antenna radio frequency signal and output it;

[0063] The gain control unit 11 is used to adjust the gain adjustment unit 10 according to the gain value corresponding to the output of the gain adjustment unit 10 .

[0064] Specifically, in the implementation scheme of the present application, the gain adjustment unit 10 can be a circuit or element with a gain adjustment effect, such as a variable resistor, a variable capacitor, an operational amplifier or an adjustable gain amplifier, a digital gain controller, etc.

[0065] It is understandable that the environmental GPS signal (GPS signal is a radio frequency signal transmitted by the global positioning system satellite) is dynamically changing, causing the received antenna radio frequency signal to also change dynamically. It is further understandable that the gain value of the antenna radio frequency signal corresponding to the output of the gain adjustment unit will also change. In this solution, the dynamically changing gain value is detected in real time, and the gain adjustment unit is dynamically adjusted according to the gain value to avoid limitations in the use of the antenna.

[0066] For details, see Figure 2 , Figure 2 FIG. 1 is a schematic diagram of another embodiment of the gain control circuit provided in the embodiment of the present application. In the embodiment of the present application, the gain adjustment unit 10 includes at least two gain adjustment subunits 101 ( Figure 2 Four are given as examples in the figure), each gain subunit 101 has a different attenuation value. By selecting different attenuation values ​​to control the gain adjustment and output of the antenna RF signal, outputs corresponding to different gain values ​​are obtained, thereby realizing dynamic adjustment of the gain value.

[0067] Specifically, in the implementation scheme of the present application, the gain control unit 11 is used to determine the target gain adjustment subunit according to the gain value corresponding to the output of the gain adjustment unit 10, and control the antenna RF signal to be input into the target gain adjustment subunit through the gain control unit 11; wherein the target gain subunit is any one of the gain adjustment subunits 101.

[0068] Specifically, in the embodiment of the present application, the gain adjustment subunit 101 is an attenuation network. Specifically, it is a π-type attenuation network, see Figure 2 As shown, in the embodiment of the present application, four groups of π-type attenuation networks are set up.

[0069] See also Figure 2 The present application also provides an implementation scheme of a gain control unit 11. Specifically, the gain control unit 11 includes:

[0070] A switch 110, wherein the switch 110 comprises at least two output terminals, each of which is connected to the gain adjustment subunit 101;

[0071] The control subunit 111 is used to control the output end path connected to the target gain adjustment subunit 101 .

[0072] Specifically, in the embodiment of the present application, the switch 110 corresponds to four π-type attenuation networks, and uses a single-pole four-way switch, that is, an SP4T switch, wherein the SP4T switch is an electronic switch, which refers to a Single-Pole Four-Throw switch. This switch can have one input terminal (single pole) and four output terminals (four-way), and it can switch the input signal to one of four different output paths, each of which can be in an open or closed state.

[0073] The control subunit 111 may be a controller, a single chip microcomputer, etc.

[0074] Specifically, in the implementation scheme of the present application, the control subunit 111 is a modem.

[0075] Specifically, Figure 2 The point A mentioned in the figure is the point where the antenna RF signal is connected, and the point B is the point where the antenna RF signal after gain adjustment is output.

[0076] Specifically, in the implementation scheme of the present application, two switches are included, namely SP4T, which is a single-pole four-throw RF switch, which can select to connect point A to four RF attenuation networks, namely π attenuation 1, π attenuation 2, π attenuation 3, and π attenuation 4, and then these four π-type attenuation networks are connected to point B through a second SP4T switch. In this way, the four RF attenuation networks from point A to point B can be connected, that is, an adjustable attenuation network can be added between point A and point B by selecting the switch.

[0077] For further information, see Figure 3 , Figure 3 This is a schematic diagram of the structure of one implementation scheme of the gain control circuit provided in the present application. In the implementation scheme of the present application, the gain control circuit further includes: a radio frequency receiving unit 12, that is, the RF connector shown in the figure, wherein A and B correspond to Figure 1 or Figure 2 The gain control circuit will not be described in detail.

[0078] Specifically, in the embodiment of the present application, the RF receiving unit 12 is used to receive an antenna RF signal and send the antenna RF signal to the gain adjustment unit 10;

[0079] The gain control unit 11 is arranged between the gain adjustment unit 10 and the RF receiving unit 12 , and is used to control the antenna RF signal input by the RF receiving unit 12 to be output to B through any gain adjustment subunit 101 in the gain adjustment unit 10 .

[0080] For further information, see Figure 3In the implementation scheme of the present application, the gain control circuit also includes a positioning receiver module 13, and the positioning receiver module 13 is used to receive the antenna RF signal output by the gain adjustment unit 10; analyze and process the antenna RF signal to obtain position information.

[0081] Specifically, in some embodiments of the present application, the gain control circuit also includes a communication unit; the communication unit is connected to the positioning receiver module; the communication unit is used to receive the position information and perform vehicle positioning processing based on the position information.

[0082] Exemplarily, the communication unit is a T-BOX of the vehicle. Specifically, T-BOX (Telematics BOX) refers to an in-vehicle information and communication system, which generally includes functions such as vehicle remote monitoring, data transmission and location services.

[0083] Furthermore, based on the above embodiments, the present application also provides a gain control circuit board, on which the gain control circuit board is integrated with the gain control circuit as described in any of the above embodiments.

[0084] Furthermore, the present application also provides a gain control method implementation scheme, wherein the gain control method is applied to a gain control circuit as described in any of the above implementation schemes, and the gain control circuit includes a gain adjustment unit and a gain control unit. For details, please refer to the above implementation schemes and will not be repeated here. The specific method includes: adjusting the gain adjustment unit according to the gain value corresponding to the output of the gain adjustment unit.

[0085] For details, see Figure 4 , Figure 4 This is a schematic flow chart of an embodiment of a gain control method in an embodiment of the present application. The gain control method includes steps S401-S402:

[0086] S401. Obtain a gain value corresponding to an antenna radio frequency signal output by the gain adjustment unit.

[0087] Specifically, in the implementation of the present application, the gain control unit collects the gain value corresponding to the antenna RF signal output by the gain adjustment unit. Further, the gain value is compared with a preset gain range. If the gain value is within the range, it means that the gain value of the antenna RF signal currently output by the gain adjustment unit meets the requirement, and the gain adjustment unit is not adjusted, that is, the current working state is maintained.

[0088] S402: If the gain value is not within a preset gain range, adjust the gain adjustment unit.

[0089] Specifically, if the gain value is not within the preset gain range, it means that the gain value of the antenna RF signal currently output by the gain adjustment unit does not meet the requirement, and the gain adjustment unit needs to be adjusted.

[0090] Specifically, in this scenario, it is necessary to adjust the attenuation value of the gain adjustment unit to adjust the gain value of the antenna radio frequency signal to meet the requirement.

[0091] Specifically, in some implementation schemes of the present application, the preset gain range includes a maximum value and a minimum value. When the gain value is not within the preset gain range, the relationship between the gain value and the maximum value or the minimum value is compared; if the gain value is less than the minimum value in the preset gain range, indicating that the gain value corresponding to the output is too small, the attenuation value of the gain adjustment unit is increased to increase the gain value corresponding to the output of the gain adjustment unit.

[0092] Specifically, in some implementation schemes of the present application, when the gain value is not within the preset gain range, the relationship between the gain value and the maximum value or the minimum value is compared; if the gain value is greater than the maximum value in the preset gain range, indicating that the gain value corresponding to the output is too large, the attenuation value of the gain adjustment unit is reduced to reduce the gain value corresponding to the output of the gain adjustment unit.

[0093] Specifically, in this solution, the gain adjustment unit includes at least two gain adjustment sub-units, each of which corresponds to a different attenuation value. If the gain value is not within the preset gain range, the gain adjustment unit is adjusted, specifically including the steps of:

[0094] (1) if the gain value is not within the preset gain range, determining a target attenuation value according to the actual attenuation value of the gain adjustment unit and the attenuation values ​​corresponding to each of the gain adjustment subunits;

[0095] (2) The target gain adjustment subunit corresponding to the target attenuation value is adjusted to a connection state, and other gain adjustment subunits except the target gain adjustment subunit are adjusted to a disconnection state.

[0096] Specifically, in this solution, the SP4T switch is controlled by the CTL pin IO to select different attenuation networks, and the selection of the attenuation network is controlled by the modem. The modem determines whether it is necessary to adjust the π-type attenuation network (determine whether the gain value is within the preset gain range) through the value of the antenna gain variable PGA (antenna gain variable PGA, that is, gain value), and selects which set of attenuation values ​​to use according to the four sets of attenuation values ​​in the preset program. After the selection is completed, the real-time gain value PGA value is obtained again, and the PGA value is used to determine whether it is within the optimal antenna gain range. If it is within the optimal gain range, this set of attenuation values ​​is kept unchanged. If it is not the optimal attenuation value, the attenuation network is continuously adjusted and the optimal attenuation value is selected until the optimal attenuation value is found. In this selection process, the modem dynamically adjusts the attenuation network according to the PGA value. The value of PGA is affected by the strength of the external signal, so that active antenna gain control based on the external environmental signal can be achieved.

[0097] For details, see Figure 5 , Figure 5 A flow chart of one implementation scheme of the gain control method provided in the present application. Specifically, the ambient GPS signal (antenna RF signal) is sent to the gain adjustment unit for gain adjustment and then output to obtain the antenna gain variable PGA value (output corresponding to the gain value). The modem detects the antenna gain variable PGA value in real time and determines whether it is in the optimal range. If not, the attenuation network is adjusted. If so, no adjustment is made, thereby realizing dynamic adjustment of the attenuation network.

[0098] On the basis of the above embodiments, an embodiment of the present invention further provides an in-vehicle electronic device, which includes the gain control circuit as described in any one of the embodiments, or includes the gain control circuit board as described in any one of the embodiments.

[0099] like Figure 6 As shown, Figure 6 It is a schematic diagram of the structure of an embodiment of the vehicle-mounted electronic equipment provided in the embodiments of the present application.

[0100] On-board electronic equipment includes:

[0101] one or more processors;

[0102] Memory; and

[0103] One or more applications, wherein the one or more applications are stored in the memory and are configured to execute, by the processor, the steps of the gain control method in any of the above gain control method embodiments.

[0104] Specifically, the vehicle-mounted electronic device may include one or more processing core processors 1001, one or more computer-readable storage media memories 1002, a power supply 1003, an input unit 1004 and other components. Those skilled in the art will understand that Figure 6 The vehicle-mounted electronic device structure shown in the figure does not constitute a limitation on the vehicle-mounted electronic device, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently. Among them:

[0105] The processor 1001 is the gain control center, which uses various interfaces and lines to connect various parts of the entire vehicle-mounted electronic equipment. By running or executing software programs and / or modules stored in the memory 1002, and calling the data stored in the memory 1002, it executes various functions of the vehicle-mounted electronic equipment and processes data, thereby monitoring the vehicle-mounted electronic equipment as a whole. It can be understood that the processor 1001 transmits signals with the controller. Optionally, the processor 1001 may include one or more processing cores; preferably, the processor 1001 can integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface and application programs, etc., and the modem processor mainly processes wireless communications. It can be understood that the above-mentioned modem processor may not be integrated into the processor 1001.

[0106] The memory 1002 can be used to store software programs and modules. The processor 1001 executes various functional applications and data processing by running the software programs and modules stored in the memory 1002. The memory 1002 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area may store data created according to the use of the vehicle-mounted electronic device, etc. In addition, the memory 1002 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage devices. Accordingly, the memory 1002 may also include a memory controller to provide the processor 1001 with access to the memory 1002.

[0107] In some embodiments of the present application, the gain control method can be implemented in the form of a computer program. The computer program can be used in Figure 6 The memory of the vehicle-mounted electronic device can store various program modules constituting the gain control method device, and the computer program composed of the various program modules enables the processor to execute the steps of the gain control method of each embodiment of the present application described in this specification.

[0108] The vehicle-mounted electronic device includes a processor, a memory and a network interface connected through a system bus. The processor of the vehicle-mounted electronic device is used to provide computing and control capabilities. The memory of the vehicle-mounted electronic device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The network interface of the vehicle-mounted electronic device is used to communicate with an external vehicle-mounted electronic device through a network connection. When the computer program is executed by the processor, a gain control method is implemented.

[0109] The vehicle-mounted electronic device also includes a power supply 1003 for supplying power to various components. Preferably, the power supply 1003 can be logically connected to the processor 1001 through a power management system, so as to manage charging, discharging, and power consumption through the power management system. The power supply 1003 can also include one or more DC or AC power supplies, recharging systems, power failure detection circuits, power converters or inverters, power status indicators, and other arbitrary components.

[0110] The vehicle-mounted electronic device may further include an input unit 1004, which may be used to receive input digital or character information and generate keyboard, mouse, joystick, optical or trackball signal input related to user settings and function control.

[0111] Although not shown, the vehicle-mounted electronic device may also include a GPS module, a power network, a communication module (such as a 4G module or a 5G module, etc.), and a CAN network, wherein the CAN network is used to transmit data with other systems of the vehicle. The GPS module, the power network, the communication module (such as a 4G module or a 5G module, etc.), and the CAN network are respectively connected to the processor 1001, the GPS module includes a GPS receiver module, and the communication module includes a communication unit.

[0112] Although not shown, the vehicle-mounted electronic device may also include a display unit, etc., which will not be described in detail here. Specifically in this embodiment, the processor 1001 in the vehicle-mounted electronic device will load the executable files corresponding to the processes of one or more application programs into the memory 1002 according to the following instructions, and the processor 1001 will run the application programs stored in the memory 1002, thereby realizing various functions, as follows:

[0113] The gain adjustment unit is adjusted according to the gain value corresponding to the output of the gain adjustment unit.

[0114] A person of ordinary skill in the art will appreciate that all or part of the steps in the various methods of the above embodiments may be completed by instructions, or by controlling related hardware through instructions. The instructions may be stored in a computer-readable storage medium and loaded and executed by a processor.

[0115] To this end, an embodiment of the present invention provides a computer-readable storage medium (hereinafter referred to as a storage medium), which may include: a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, etc. A computer program is stored thereon, and the computer program is loaded by a processor to execute the steps in any one of the gain control methods provided in the embodiments of the present invention. For example, the computer program may be loaded by a processor to execute the following steps:

[0116] The gain adjustment unit is adjusted according to the gain value corresponding to the output of the gain adjustment unit.

[0117] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the detailed description of other embodiments above, and will not be repeated here.

[0118] In specific implementation, the above units or structures can be implemented as independent entities, or can be arbitrarily combined to be implemented as the same or several entities. The specific implementation of the above units or structures can refer to the previous method embodiments, which will not be repeated here.

[0119] The specific implementation of the above operations can be found in the previous embodiments, which will not be described in detail here.

[0120] Furthermore, the present application also provides a vehicle, comprising a gain control circuit as described in any one of the above items, or a gain control circuit board as described in any one of the above items, or an on-board electronic device as described in any one of the above items.

[0121] The above is a detailed introduction to a gain control circuit, method, circuit board, on-board electronic device and vehicle provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A gain control circuit, characterized in that: include: A gain adjustment unit and a gain control unit; The gain adjustment unit is used to adjust the gain of the antenna radio frequency signal and output it; The gain control unit is used to adjust the gain adjustment unit according to the gain value corresponding to the output of the gain adjustment unit.

2. The gain control circuit according to claim 1, characterized in that: The antenna radio frequency signal changes dynamically according to the ambient GPS signal.

3. The gain control circuit according to claim 1, characterized in that: The gain adjustment unit includes at least two gain adjustment sub-units; The gain control unit is used to determine a target gain adjustment subunit according to a gain value corresponding to the output of the gain adjustment unit, and control the antenna RF signal to be input into the target gain adjustment subunit; Wherein, the target gain adjustment subunit is any one of the gain adjustment subunits.

4. The gain control circuit according to claim 3, characterized in that: The gain control unit comprises: A switch, the switch comprising at least two output terminals, each of the output terminals being connected to the gain adjustment subunit respectively; A control subunit is used to control the output end path connected to the target gain adjustment subunit.

5. The gain control circuit according to claim 3, characterized in that: The gain adjustment subunit is an attenuation network.

6. The gain control circuit according to claim 1, characterized in that: Also includes: A radio frequency receiving unit, the radio frequency receiving unit is used to receive an antenna radio frequency signal and send the antenna radio frequency signal to the gain adjustment unit; The gain control unit is arranged between the gain adjustment unit and the radio frequency receiving unit.

7. The gain control circuit according to any one of claims 1 to 6, characterized in that: Also includes a positioning receiver module, The positioning receiver module is used to receive the antenna radio frequency signal output by the gain adjustment unit; analyze and process the antenna radio frequency signal to obtain position information.

8. The gain control circuit according to claim 7, characterized in that: Also includes a communication unit; The communication unit is connected to the positioning receiver module; The communication unit is used to receive the position information and perform vehicle positioning processing according to the position information.

9. A gain control method, characterized in that: Applied to the gain control circuit according to any one of claims 1 to 8, the gain control circuit comprises a gain adjustment unit and a gain control unit, and the method comprises: The gain adjustment unit is adjusted according to the gain value corresponding to the output of the gain adjustment unit.

10. The gain control method according to claim 9, characterized in that: The step of adjusting the gain adjustment unit according to the gain value corresponding to the output of the gain adjustment unit comprises: Obtaining a gain value corresponding to the antenna radio frequency signal output by the gain adjustment unit; If the gain value is not within the preset gain range, the gain adjustment unit is adjusted.

11. The gain control method according to claim 10, characterized in that: If the gain value is not within the preset gain range, adjusting the gain adjustment unit includes: If the gain value is less than the minimum value in the preset gain range, the attenuation value of the gain adjustment unit is increased.

12. The gain control method according to claim 10, characterized in that: If the gain value is not within the preset gain range, adjusting the gain adjustment unit includes: If the gain value is greater than a maximum value in the preset gain range, the attenuation value of the gain adjustment unit is reduced.

13. The gain control method according to claim 10, characterized in that: The gain adjustment unit includes at least two gain adjustment sub-units, each of which corresponds to a different attenuation value; If the gain value is not within the preset gain range, the gain adjustment unit is adjusted, including If the gain value is not within the preset gain range, determining a target attenuation value according to the actual attenuation value of the gain adjustment unit and the attenuation values ​​corresponding to each of the gain adjustment subunits; The target gain adjustment subunit corresponding to the target attenuation value is adjusted to a connection state, and other gain adjustment subunits except the target gain adjustment subunit are adjusted to a disconnection state.

14. A gain control circuit board, characterized in that: The gain control circuit board is integrated with the gain control circuit as described in any one of claims 1 to 8.

15. A vehicle-mounted electronic device, characterized in that: The in-vehicle electronic device comprises the gain control circuit according to any one of claims 1 to 8, or the gain control circuit board according to claim 14.

16. The vehicle-mounted electronic device according to claim 15, characterized in that: The vehicle-mounted electronic equipment comprises: one or more processors; Memory; and One or more applications, wherein the one or more applications are stored in the memory and are configured to be executed by the processor to implement the steps in the gain control method according to any one of claims 9 to 13.

17. The vehicle-mounted electronic device according to claim 16, characterized in that: It also includes a GPS module power supply network, a communication module and a CAN network, and the GPS module power supply network, the communication module and the CAN network are respectively connected to the processor.

18. A computer-readable storage medium, characterized in that: A computer program is stored thereon, and the computer program is loaded by a processor to execute the steps in the gain control method according to any one of claims 9 to 13.

19. A vehicle, characterized in that: The vehicle comprises the gain control circuit as claimed in any one of claims 1 to 8, or the gain control circuit board as claimed in claim 14, or the on-vehicle electronic device as claimed in any one of claims 15 to 17.

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