WO2022140965A1

WO2022140965A1 - Remote control device and control method therefor, remote control communication system, and storage medium

Info

Publication number: WO2022140965A1
Application number: PCT/CN2020/140343
Authority: WO
Inventors: 靖俊; 兰设勇; 孙仲健; 陆城富
Original assignee: 深圳市大疆创新科技有限公司
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2022-07-07

Abstract

A remote control device and a control method therefor, a remote control communication system, and a storage medium. The method comprises: acquiring the current signal-to-noise ratio of an I/Q signal corresponding to an SDR module of a remote control device (S101); acquiring calibration information corresponding to at least one digital interface of the remote control device, wherein the calibration information represents a mapping relationship between multiple working modes of the at least one digital interface and a signal-to-noise ratio change in the I/Q signal (S102); determining, according to the current signal-to-noise ratio and the calibration information, a currently adapted working mode of the at least one digital interface from among the multiple working modes of the at least one digital interface (S103); and adjusting the at least one digital interface to the determined currently adapted working mode, so as to update the current signal-to-noise ratio, so that the updated current signal-to-noise ratio is greater than or equal to a preset signal-to-noise ratio threshold (S104).

Description

Remote control device and control method thereof, remote control communication system, storage medium

technical field

The present application relates to the technical field of remote controls, and in particular, to a remote control device and a control method thereof, a remote control communication system, and a storage medium.

Background technique

In the process of remote control of a movable platform (such as a drone) through a remote control, the remote control will have the problem of SDR (Software Defined Radio, software defined radio) noise floor interference. Excessive noise floor will affect the modulation and demodulation of the remote control SDR RF signal, thereby shortening the effective communication range between the remote control and the movable platform.

In order to suppress the noise floor, at present, one method is to use a shield to connect the HDMI (High Definition Multimedia Interface), USB (Universal Serial Bus, Universal Serial Bus), MIPI (Mobile Industry Processor Interface) of the remote control , mobile industry processor interface), Wi-Fi and other digital interface circuits are shielded, and the noise floor interference of these digital interfaces is isolated from the SDR circuit and antenna from the propagation path; another method is to communicate these digital interfaces for SDR. The frequency band is specially configured to make these digital interfaces work in a fixed working mode, thereby reducing the noise floor interference of the SDR. In the above method, in order to reduce the noise floor interference of the SDR, the performance of the remote control cannot be guaranteed. Therefore, how to achieve both the communication performance of the remote control and the SDR noise floor suppression has become an urgent problem to be solved.

SUMMARY OF THE INVENTION

Based on this, the present application provides a remote control device and a control method thereof, a remote control communication system, and a storage medium, so as to achieve both the communication performance of the remote control device and the suppression of the SDR noise floor.

In a first aspect, the present application provides a method for controlling a remote control device, the method comprising:

Obtain the current signal-to-noise ratio of the I/Q signal corresponding to the SDR module of the remote control device;

Obtain calibration information corresponding to at least one digital interface of the remote control device, and the calibration information represents the mapping relationship between the multiple operating modes of the at least one digital interface and the signal-to-noise ratio change of the I/Q signal;

According to the current signal-to-noise ratio and the calibration information, from a plurality of working modes of the at least one digital interface, determine the currently adapted working mode of the at least one digital interface;

The at least one digital interface is adjusted to the determined currently adapted working mode to update the current signal-to-noise ratio so that the updated current signal-to-noise ratio is higher than or equal to a preset signal-to-noise ratio threshold.

In a second aspect, the present application also provides a remote control device, the remote control device comprising a memory and a processor;

the memory is used to store computer programs;

The processor is configured to execute the computer program and implement the following steps when executing the computer program:

Acquiring calibration information corresponding to at least one digital interface of the remote control device, where the calibration information represents a mapping relationship between multiple operating modes of the at least one digital interface and changes in the signal-to-noise ratio of the I/Q signal;

In a third aspect, the present application further provides a remote control communication system, the remote control communication system includes a movable platform, and the above-mentioned remote control device, wherein the remote control device is communicatively connected to the movable platform for controlling the Operation of removable platforms.

In a fourth aspect, the present application also provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program, and when the computer program is executed by the processor, the processor can realize the above-mentioned remote control device. Control Method.

The remote control device and its control method, remote control communication system, and storage medium disclosed in the present application can obtain the current signal-to-noise ratio of the I/Q signal corresponding to the SDR module of the remote control device, and obtain the calibration information corresponding to at least one digital interface of the remote control device, According to the current signal-to-noise ratio of the I/Q signal and the calibration information, from the multiple working modes of the at least one digital interface, determine the currently adapted working mode of the at least one digital interface, and then adjust the at least one digital interface to the determined current suitable working mode. The working mode of at least one digital interface changes, which affects the update of the current SNR of the I/Q signal, and the current SNR of the updated I/Q signal is higher than or equal to the preset SNR threshold, thus Realize both the communication performance of the remote control equipment and the SDR noise floor suppression.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not limiting of the present application.

Description of drawings

In order to explain the technical solutions of the embodiments of the present application more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. For those of ordinary skill, other drawings can also be obtained from these drawings without any creative effort.

1 is a system schematic diagram of a remote control communication system provided by an embodiment of the present application;

2 is a schematic structural diagram of a remote control device provided by an embodiment of the present application;

3 is a schematic flowchart of steps of a method for controlling a remote control device provided by an embodiment of the present application;

4 is a schematic flowchart of a step of acquiring calibration information corresponding to at least one digital interface of the remote control device provided by an embodiment of the present application;

5 is a schematic flowchart of another step for obtaining calibration information corresponding to at least one digital interface of the remote control device provided by an embodiment of the present application;

6 is a schematic flowchart of steps provided in an embodiment of the present application for sequentially adjusting the working mode of the at least one digital interface to generate second calibration information;

FIG. 7 is a schematic flow chart of obtaining calibration information provided by an embodiment of the present application;

FIG. 8 is a schematic flowchart of a step of determining a working mode currently adapted to the at least one digital interface provided by an embodiment of the present application;

FIG. 9 is a schematic flowchart of steps for determining the working mode of the at least one digital interface corresponding to the difference value as the working mode currently adapted by the at least one digital interface according to an embodiment of the present application;

FIG. 10 is a schematic block diagram of a remote control device provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

The flowcharts shown in the figures are for illustration only, and do not necessarily include all contents and operations/steps, nor do they have to be performed in the order described. For example, some operations/steps can also be decomposed, combined or partially combined, so the actual execution order may be changed according to the actual situation.

It should be understood that the terms used in the specification of the present application herein are for the purpose of describing particular embodiments only and are not intended to limit the present application. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural unless the context clearly dictates otherwise.

It will also be understood that, as used in this specification and the appended claims, the term "and/or" refers to and including any and all possible combinations of one or more of the associated listed items .

Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The embodiments described below and features in the embodiments may be combined with each other without conflict.

Embodiments of the present application provide a remote control device and a control method thereof, a remote control communication system, and a storage medium, which are used to achieve both the communication performance of the remote control device and the suppression of the SDR noise floor.

Please refer to FIG. 1. FIG. 1 is a system schematic diagram of a remote control communication system provided by an embodiment of the present application. As shown in FIG. 1 , the remote control communication system 1000 may include a movable platform 100 and a remote control device 200 . The remote control device 200 is communicatively connected to the movable platform 100 , and the remote control device 200 is used to control the operation of the movable platform 100 . Wherein, the movable platform 100 includes but is not limited to unmanned aerial vehicles, such as rotary-wing aircraft, including single-rotor aircraft, dual-rotor aircraft, tri-rotor aircraft, quad-rotor aircraft, hexa-rotor aircraft, octa-rotor aircraft, ten-rotor aircraft, ten-rotor aircraft, and ten-rotor aircraft. Two-rotor aircraft, etc. Of course, the movable platform 100 may also be other types of unmanned aerial vehicles or movable devices, such as fixed-wing unmanned aerial vehicles, and the embodiment of the present application is not limited thereto. The remote control device 200 includes, but is not limited to, a remote controller, a control terminal, and the like of the movable platform 100 .

Exemplarily, as shown in FIG. 2 , the remote control device 200 includes at least one digital interface, a CPU (Central Processing Unit, central processing unit) module and an SDR (Software Defined Radio, software radio) module. Among them, digital interfaces include HDMI (High Definition Multimedia Interface, high-definition multimedia interface) interface, USB (Universal Serial Bus, universal serial bus) interface, MIPI (Mobile Industry Processor Interface, mobile industry processor interface) interface, Wi-Fi interface Wait. The digital interface includes a variety of different working modes. For example, the HDMI interface is configured with a variety of working modes of different output resolutions, the USB interface is configured with a variety of working modes of different interface types such as USB2.0 and USB3.0, and the MIPI interface is configured with many There are various working modes with different working frequencies, and the Wi-Fi interface configuration enables/disables the working mode.

The SDR module includes an SDR antenna, an RF Transceiver (radio frequency transceiver), and an RF Base Band (radio frequency baseband) processing unit. The RF Transceiver receives the RF reception signal of the SDR antenna, and then sends the I/Q (In-phase/Quadrature) signal to the RF Base Band processing unit after down-filtering and frequency reduction. After the RF Base Band processing unit samples the I/Q signal, it modulates and demodulates the image transmission code stream data. The RF Base Band processing unit can also calculate the signal-to-noise ratio of the I/Q signal, and send the result of the signal-to-noise ratio of the I/Q signal to the CPU module.

The CPU module receives the image transmission code stream data, and displays it to the display screen or HDMI after processing. At the same time, the CPU module performs adaptive configuration on digital interfaces such as the HDMI interface, USB interface, MIPI interface, and Wi-Fi interface of the remote control device 200, and adjusts the digital interface to the determined currently adapted working mode, so as to realize the SDR noise floor The balance of suppression and remote control device communication performance ensures the communication performance of remote control devices and maximizes user experience.

It can be understood that the above naming of the components of the remote control communication system 1000 is only for the purpose of identification, and therefore does not limit the embodiments of the present application.

The following will describe in detail the control method of the remote control device provided by the embodiments of the present application based on the remote control communication system 1000 , the movable platform 100 and the remote control device 200 in the remote control communication system 1000 . It should be noted that the remote control communication system 1000 in FIG. 1 and the remote control device 200 in FIG. 2 are only used to explain the control method of the remote control device provided by the embodiment of the present application, but do not constitute the control method of the remote control device provided by the embodiment of the present application. limited application scenarios.

Please refer to FIG. 3 , which is a schematic flowchart of a method for controlling a remote control device provided by an embodiment of the present application. The method can be used in the remote control device provided by the above embodiments, so as to achieve both the communication performance of the remote control device and the SDR noise floor suppression.

As shown in FIG. 3 , the control method of the remote control device specifically includes steps S101 to S104.

S101. Obtain the current signal-to-noise ratio of the I/Q signal corresponding to the SDR module of the remote control device.

Exemplarily, after the remote control device is powered on, it continuously reads the current signal-to-noise ratio of the I/Q signal corresponding to the latest SDR module in real time. For example, the I/Q signal is sampled by the RF Base Band processing unit of the remote control device and the current signal-to-noise ratio of the I/Q signal is calculated.

Assuming that the effective signal power of the I/Q signal is I/Q_Signal, and the low-noise power is I/Q_Noise, the I/Q signal is obtained by calculating the signal-to-noise ratio SN of the I/Q signal with the formula SN=I/Q_Signal/I/Q_Noise. the current signal-to-noise ratio.

In some embodiments, before acquiring the current signal-to-noise ratio of the I/Q signal corresponding to the SDR module of the remote control device, the method may include: setting the at least one digital interface to the working mode before the last shutdown of the remote control device.

That is, after the remote control device is powered on, the configuration before the last shutdown is used by default, and each digital interface is set to the working mode before the last shutdown of the remote control device. Then obtain the current signal-to-noise ratio of the I/Q signal corresponding to the SDR module.

S102. Acquire calibration information corresponding to at least one digital interface of the remote control device, where the calibration information represents a mapping relationship between multiple operating modes of the at least one digital interface and changes in the signal-to-noise ratio of the I/Q signal.

Exemplarily, calibration information corresponding to at least one digital interface of the remote control device is preset and saved, and the saved calibration information is acquired by querying. Alternatively, the calibration information corresponding to at least one digital interface of the remote control device is obtained by currently performing a corresponding calibration operation. The calibration information represents a mapping relationship between multiple operating modes of at least one digital interface of the remote control device and changes in the signal-to-noise ratio of the I/Q signal. Among them, the higher the output resolution of the HDMI interface, the greater the impact on the SNR of the I/Q signal; the higher the operating frequency of the MIPI interface, the greater the impact on the SNR of the I/Q signal; the USB interface is The influence of USB3.0 interface type on the signal-to-noise ratio change of I/Q signal is greater than the influence of USB2.0 interface type on the signal-to-noise ratio change of I/Q signal; Wi-Fi interface is enabled on the signal-to-noise ratio of I/Q signal The effect of noise ratio change is greater than the effect of the Wi-Fi interface shutdown on the signal-to-noise ratio change of the I/Q signal.

In some embodiments, as shown in FIG. 4 , the step S102 may include a sub-step S1021 and a sub-step S1022.

S1021. After the remote control device is powered on, if no touch operation by the user based on the preset calibration control is detected, query the stored first calibration information.

In order to further improve the user's interactive experience, a calibration control is preset on the remote control device for the user to control and perform a calibration operation, wherein the calibration control may be a button set on the remote control device or a control on a corresponding operation interface. Each time the user performs a corresponding touch operation based on the preset calibration control, the remote control device is triggered to perform the calibration operation, and the latest calibration information is obtained and saved. Exemplarily, the calibration information may be stored locally on the remote control device, and/or stored in a cloud server, and/or stored in an external device, and there is no specific limitation on the way of storing the calibration information.

After the remote control device is powered on, the user's touch operation based on the calibration control is detected, and if the user's touch operation based on the calibration control is not detected, the saved calibration information is queried. In order to facilitate the distinguishing description, the stored calibration information is hereinafter referred to as the first calibration information.

S1022. Determine the first calibration information as the calibration information corresponding to the at least one digital interface.

After the stored first calibration information is acquired by query, the first calibration information is determined as the latest calibration information corresponding to the at least one digital interface.

In some embodiments, as shown in FIG. 5 , the step S102 may include a sub-step S1023 and a sub-step S1024.

S1023. If a touch operation by the user based on the calibration control is detected, adjust the working mode of the at least one digital interface in turn, generate second calibration information, and replace the saved first calibration information with the The second calibration information.

After the remote control device is powered on, the user's touch operation based on the calibration control is detected. If the user's touch operation based on the calibration control is detected, the calibration operation is performed, and the working mode of at least one digital interface of the remote control device is adjusted in turn to generate at least one. Calibration information corresponding to each working mode of the digital interface. In order to facilitate the distinguishing description, the calibration information generated by performing the calibration operation will be referred to as the second calibration information hereinafter. After the second calibration information is generated, the stored first calibration information is replaced with the second calibration information, that is, the stored first calibration information is updated to the newly obtained second calibration information.

S1024. Determine the second calibration information as the calibration information corresponding to the at least one digital interface.

After the second calibration information is obtained through the current calibration operation, the second calibration information is determined as the latest calibration information corresponding to the at least one digital interface.

In some embodiments, as shown in FIG. 6 , the step S1023 may include a sub-step S10231 and a sub-step S10232.

S10231. Adjust the working mode of the at least one digital interface in sequence, and determine the signal-to-noise ratio change of the I/Q signal in each working mode of each of the digital interfaces.

Exemplarily, taking the digital interface of the remote control device including the HDMI interface, the USB interface, the MIPI interface and the Wi-Fi interface as an example, as shown in Figure 7, the HDMI interface, the USB interface, the MIPI interface and the Wi-Fi interface are all closed first. , and the first signal-to-noise ratio of the I/Q signal is obtained by detection.

Then, adjust the HDMI interface to multiple output resolutions R0, R1...Rn in turn, detect the second signal-to-noise ratio of the I/Q signal at the output resolutions R0, R1...Rn, The second signal-to-noise ratio of the I/Q signal at the resolutions R0, R1...Rn determines the change of the signal-to-noise ratio of the I/Q signal at the output resolutions R0, R1...Rn. For example, as shown in Figure 7, adjust the HDMI interface to the output resolution R0, detect the second signal-to-noise ratio of the I/Q signal at the output resolution R0, according to the first signal-to-noise ratio and the I/Q signal at the output resolution R0 The second signal-to-noise ratio of the Q signal determines the change in the signal-to-noise ratio of the I/Q signal at the output resolution R0. After that, adjust the HDMI interface to the output resolution R1, and detect the second signal-to-noise ratio of the I/Q signal at the output resolution R1, according to the first signal-to-noise ratio and the second signal-to-noise ratio of the I/Q signal at the output resolution R1 Noise ratio, which determines the change in the signal-to-noise ratio of the I/Q signal at the output resolution R1. In this way, the signal-to-noise ratio variation of the I/Q signal at the output resolutions R0, R1 . . . Rn is obtained.

After adjusting each working mode of the HDMI interface in turn, close the HDMI interface, adjust the MIPI interface to multiple operating frequencies F0, F1...Fm in turn, and detect the first I/Q signal at the operating frequencies F0, F1...Fm. Three signal-to-noise ratios, according to the first signal-to-noise ratio and the third signal-to-noise ratio of the I/Q signal at the working frequencies F0, F1...Fm, determine the signal-to-noise ratio of the I/Q signal at the working frequencies F0, F1...Fm Noise ratio changes. For example, as shown in Fig. 7, adjust the MIPI interface to the working frequency F0, detect the third SNR of the I/Q signal at the working frequency F0, according to the first SNR and the I/Q signal at the working frequency F0 The third signal-to-noise ratio determines the change of the signal-to-noise ratio of the I/Q signal at the operating frequency F0. After that, adjust the MIPI interface to the working frequency F1, and detect the third SNR of the I/Q signal at the working frequency F1. According to the first SNR and the third SNR of the I/Q signal at the working frequency F1, Determine the signal-to-noise ratio change of the I/Q signal at the operating frequency F1. In this way, the signal-to-noise ratio variation of the I/Q signal at the operating frequencies F0, F1 . . . Fm is obtained.

After adjusting each working mode of the MIPI interface in turn, close the MIPI interface, switch the interface type of the USB interface in turn, and detect the fourth signal-to-noise ratio of the I/Q signal under each interface type. According to the first signal-to-noise ratio and the fourth signal-to-noise ratio of the I/Q signal at each interface type, determine the signal-to-noise ratio change of the I/Q signal at each interface type. For example, as shown in Figure 7, switch the USB interface to USB2.0, detect the fourth signal-to-noise ratio of the I/Q signal under USB2.0, according to the first signal-to-noise ratio and the I/Q signal under USB2.0 The fourth signal-to-noise ratio determines the change of the signal-to-noise ratio of the I/Q signal under USB2.0. After that, switch the USB interface to USB3.0, and detect the fourth SNR of the I/Q signal under USB3.0. According to the first SNR and the fourth SNR of the I/Q signal under USB3.0, Determine the signal-to-noise ratio change of the I/Q signal under USB3.0. In this way, the signal-to-noise ratio variation of the I/Q signal under USB2.0, USB3.0 . . . is obtained.

After adjusting each working mode of the USB interface in turn, close the USB interface and open the Wi-Fi interface, and detect the fifth signal-to-noise ratio of the I/Q signal when the Wi-Fi interface is in the open state. According to the first signal-to-noise ratio ratio and the fifth signal-to-noise ratio of the I/Q signal in the open state of the Wi-Fi interface, to determine the change of the signal-to-noise ratio of the I/Q signal in the open state of the Wi-Fi interface.

S10232. Generate the second calibration information according to a change in the signal-to-noise ratio of the I/Q signal in each working mode of each of the digital interfaces.

Exemplarily, according to the signal-to-noise ratio change of the I/Q signal at the output resolutions R0, R1...Rn of the HDMI interface, the signal-to-noise ratio change of the I/Q signal at the operating frequencies F0, F1...Fm of the MIPI interface, The signal-to-noise ratio change of the I/Q signal of the USB interface under USB2.0, USB3.0, and the change of the signal-to-noise ratio of the I/Q signal when the Wi-Fi interface is on, generate the second calibration information, and save the first 2. Calibration information.

S103 . According to the current signal-to-noise ratio and the calibration information, from multiple working modes of the at least one digital interface, determine a currently adapted working mode of the at least one digital interface.

According to the obtained calibration information, the mapping relationship between the various working modes of the at least one digital interface and the change of the signal-to-noise ratio of the I/Q signal can be obtained. Among the multiple working modes of the digital interface, the working mode currently adapted by the at least one digital interface is determined.

Exemplarily, determining the working mode currently adapted by the at least one digital interface includes at least one of the following: determining the output resolution of the HDMI interface; determining the interface type of the USB interface; determining the operating frequency of the MIPI interface; determining that the Wi-Fi interface is enabled /closure.

In some embodiments, as shown in FIG. 8 , the step S103 may include a sub-step S1031 and a sub-step S1032.

S1031. Determine the difference between the current signal-to-noise ratio and the preset signal-to-noise ratio threshold.

In order to achieve SDR noise floor suppression, a preset signal-to-noise ratio threshold SN_Threshold of the corresponding I/Q signal is preset. After the current signal-to-noise ratio of the I/Q signal is obtained, the difference between the current signal-to-noise ratio and the preset signal-to-noise ratio threshold SN_Threshold is calculated.

S1032. According to the calibration information, determine the working mode of the at least one digital interface corresponding to the difference value as the working mode currently adapted by the at least one digital interface.

Based on the calibration information and the calculated difference between the current SNR and the preset SNR threshold SN_Threshold, the difference, that is, the working mode of the at least one digital interface corresponding to the change in the SNR, is determined to be at least The current working mode of a digital interface.

In some embodiments, as shown in FIG. 9 , the step S1032 may include a sub-step S10321 and a sub-step S10322.

S10321. Determine, according to the calibration information, multiple groups of working modes of the digital interfaces corresponding to the difference values.

Since the change of the working mode of each digital interface will affect the signal-to-noise ratio of the I/Q signal, based on the calibration information, a plurality of numbers corresponding to the difference between the current signal-to-noise ratio and the preset signal-to-noise ratio threshold SN_Threshold can be determined Multi-group working mode of the interface. That is, by adjusting the multiple digital interfaces to any one of the determined multiple sets of working modes, the signal-to-noise ratio of the I/Q signal can be changed corresponding to the difference, and the I/Q signal after the change can be changed. The SNR is higher than or equal to the preset SNR threshold SN_Threshold.

S10322. Select a set of working modes from the multiple sets of working modes, and determine the working modes currently adapted by the plurality of digital interfaces.

In order to take into account the communication performance of the remote control device, according to the corresponding rules, a set of working modes is selected from the multiple sets of working modes of the multiple digital interfaces determined, and is determined as the working mode currently adapted for the multiple digital interfaces.

In some embodiments, selecting a set of working modes from the multiple sets of working modes, and determining the working modes currently adapted for the plurality of the digital interfaces may include: determining the priorities of the plurality of the digital interfaces; According to the priority, a set of working modes is selected from the multiple sets of working modes, and it is determined as the working modes currently adapted by the plurality of digital interfaces.

Exemplarily, the priorities of the multiple digital interfaces are determined according to the current application scenario of the remote control device. For example, if the remote control device currently receives the captured images/videos transmitted by the movable platform, the HDMI interface is determined to have the highest priority, and the configuration of other interfaces such as the USB interface, MIPI interface, and Wi-Fi interface is sacrificed to ensure the configuration of the HDMI interface.

Exemplarily, the priority of multiple digital interfaces can also be set by the user. For example, a digital interface priority setting interface is displayed on the display screen of the remote control device, and the user can perform a corresponding priority setting operation of setting priorities of multiple digital interfaces on the digital interface priority setting interface. The priority of the plurality of digital interfaces of the remote control device is determined according to the received priority setting operation of the user.

According to the determined priorities of the multiple digital interfaces, a set of working modes is selected from the multiple sets of working modes, and the working mode currently adapted to the multiple digital interfaces is determined. For example, if it is determined that the HDMI interface has the highest priority, from the multiple groups of working modes of multiple digital interfaces, select the group with the highest output resolution of the HDMI interface as the working mode, and determine the working mode currently adapted by the multiple digital interfaces .

S104. Adjust the at least one digital interface to the determined currently adapted working mode to update the current signal-to-noise ratio, so that the updated current signal-to-noise ratio is higher than or equal to a preset signal-to-noise ratio threshold.

Afterwards, according to the determined currently adapted working mode of the at least one digital interface, the at least one digital interface is adjusted to the determined currently adapted working mode, and the working mode of the at least one digital interface is changed. The signal-to-noise ratio also changes, and the current signal-to-noise ratio of the changed I/Q signal is higher than or equal to the preset signal-to-noise ratio threshold SN_Threshold.

In some embodiments, adjusting the at least one digital interface to the determined working mode may include: determining whether the remote control device is powered off; if the remote control device is not powered off, returning to executing the acquiring remote control The operation of the current signal-to-noise ratio of the I/Q signal corresponding to the device SDR module.

In order to ensure that the remote control device meets the SDR noise floor suppression control requirements in the whole process and achieves the best communication performance of the remote control device, after adjusting at least one digital interface to the determined currently adapted working mode, if the remote control device is turned off, the control operation ends. . If the remote control device is not turned off, continue to return to the above operation process, obtain the current signal-to-noise ratio of the I/Q signal again, and then adjust the working mode of at least one digital interface again according to the current signal-to-noise ratio of the I/Q signal.

For example, when the movable platform and the remote control device are close to each other, the effective signal power I/Q_Signal of the I/Q signal is strong, and the current SNR of the I/Q signal will always be maintained at a high value, which is much larger than the preset SNR threshold. SN_Threshold. At this time, the working mode of each digital interface such as HDMI interface, USB interface, MIPI interface, Wi-Fi interface can be adjusted to the optimal working mode, such as setting the output resolution of the HDMI interface to the highest resolution, the MIPI interface works The frequency is adjusted to the highest, the USB interface is adjusted to USB3.0, and the Wi-Fi interface is turned on.

When the distance between the movable platform and the remote control device increases, the effective signal power I/Q_Signal of the I/Q signal gradually becomes weaker. In order to keep the current SNR of the I/Q signal greater than the preset SNR threshold SN_Threshold, according to the calibration information, The working mode of each digital interface such as HDMI interface, USB interface, MIPI interface, and Wi-Fi interface is adjusted according to the current signal-to-noise ratio, for example, switching the USB interface to USB2.0.

When the distance between the movable platform and the remote control device increases to a great distance, the effective signal power I/Q_Signal of the I/Q signal is already very weak. The working mode of each digital interface, such as interface, USB interface, MIPI interface, Wi-Fi interface, etc., is adjusted to the weakest working mode. For example, the output resolution of the HDMI interface is set to the lowest resolution, the working frequency of the MIPI interface is adjusted to the lowest, and the USB interface is set to the lowest resolution. Adjust to USB2.0, Wi-Fi interface is closed.

The remote control device can adaptively adjust the working mode of each digital interface according to the distance from the movable platform, and achieve the best communication performance of the remote control device while meeting the SDR noise floor suppression control requirements.

The above-mentioned embodiment obtains the current signal-to-noise ratio of the I/Q signal corresponding to the SDR module of the remote control device, and obtains the calibration information corresponding to at least one digital interface of the remote control device, according to the current signal-to-noise ratio of the I/Q signal and the calibration information, from the Among the multiple working modes of the at least one digital interface, determine the working mode currently adapted by the at least one digital interface, and then adjust the at least one digital interface to the determined currently adapted working mode, and the working mode of the at least one digital interface is changed. The current signal-to-noise ratio of the I/Q signal is updated, and the current signal-to-noise ratio of the updated I/Q signal is higher than or equal to the preset signal-to-noise ratio threshold, so as to achieve both the communication performance of the remote control device and the SDR noise floor suppression.

Please refer to FIG. 10 , which is a schematic block diagram of a remote control device provided by an embodiment of the present application.

As shown in FIG. 10 , the remote control device 200 may include a processor 211 and a memory 212, and the processor 211 and the memory 212 are connected through a bus, such as an I2C (Inter-integrated Circuit) bus.

Specifically, the processor 211 may be a micro-controller unit (Micro-controller Unit, MCU), a central processing unit (Central Processing Unit, CPU), or a digital signal processor (Digital Signal Processor, DSP) or the like.

Specifically, the memory 212 may be a Flash chip, a read-only memory (ROM, Read-Only Memory) magnetic disk, an optical disk, a U disk, a mobile hard disk, and the like. Various computer programs to be executed by the processor 211 are stored in the memory 212 .

Wherein, the processor is used for running the computer program stored in the memory, and implements the following steps when executing the computer program:

In some embodiments, the processor determines, according to the current signal-to-noise ratio and the calibration information, from multiple working modes of the at least one digital interface, the current state of the at least one digital interface. When the adapted working mode is used, it is used to realize:

determining the difference between the current signal-to-noise ratio and the preset signal-to-noise ratio threshold;

According to the calibration information, the working mode of the at least one digital interface corresponding to the difference value is determined as the working mode currently adapted by the at least one digital interface.

In some embodiments, the processor determines, according to the calibration information, the working mode of the at least one digital interface corresponding to the difference value as the currently adapted working mode of the at least one digital interface. When the above working mode is used, it is used to realize:

According to the calibration information, determine multiple groups of working modes of the digital interfaces corresponding to the difference values;

A set of working modes is selected from the multiple sets of working modes, and it is determined as the working modes currently adapted by the plurality of digital interfaces.

In some embodiments, when the processor selects a set of working modes from the multiple sets of working modes and determines the working modes that are currently adapted by the plurality of digital interfaces, the processor is configured to:

determining a priority of a plurality of said digital interfaces;

According to the priority, a set of working modes is selected from the multiple sets of working modes, and it is determined as the working modes currently adapted by the plurality of digital interfaces.

In some embodiments, when implementing the determining of the priorities of the plurality of the digital interfaces, the processor is configured to implement:

According to the current application scenario of the remote control device, the priorities of a plurality of the digital interfaces are determined.

Display the digital interface priority setting interface;

The priorities of a plurality of the digital interfaces are determined according to a priority setting operation performed by the user based on the digital interface priority setting interface.

In some embodiments, the digital interface includes at least one of an HDMI interface, a USB interface, a MIPI interface, and a Wi-Fi interface;

The determining of the currently adapted working mode of the at least one digital interface includes at least one of the following:

determining the output resolution of the HDMI interface;

determining the interface type of the USB interface;

determining the operating frequency of the MIPI interface;

Make sure the Wi-Fi interface is on/off.

In some embodiments, the higher the output resolution of the HDMI interface, the greater the impact on the signal-to-noise ratio of the I/Q signal; the higher the operating frequency of the MIPI interface, the greater the impact on the I/Q signal. The greater the impact of changes in the signal-to-noise ratio.

In some embodiments, before implementing the acquiring the current signal-to-noise ratio of the I/Q signal corresponding to the SDR module of the remote control device, the processor is configured to implement:

The at least one digital interface is set to the working mode before the last shutdown of the remote control device.

In some embodiments, when implementing the acquiring calibration information corresponding to at least one digital interface of the remote control device, the processor is configured to implement:

After the remote control device is powered on, if no touch operation by the user based on the preset calibration control is detected, query the saved first calibration information;

The first calibration information is determined as the calibration information corresponding to the at least one digital interface.

In some embodiments, the processor, when implementing the acquisition of calibration information corresponding to at least one digital interface of the remote control device, is used to implement:

If a touch operation by the user based on the calibration control is detected, the working mode of the at least one digital interface is adjusted in sequence, second calibration information is generated, and the saved first calibration information is replaced with the second calibration information. calibration information;

The second calibration information is determined as the calibration information corresponding to the at least one digital interface.

In some embodiments, when the processor implements the sequential adjustment of the working mode of the at least one digital interface and generates the second calibration information, the processor is configured to implement:

Adjusting the working mode of the at least one digital interface in sequence, and determining the signal-to-noise ratio change of the I/Q signal in each working mode of each of the digital interfaces;

The second calibration information is generated according to changes in the signal-to-noise ratio of the I/Q signal in each operating mode of each of the digital interfaces.

In some embodiments, after implementing the adjusting the at least one digital interface to the determined operating mode, the processor is configured to implement:

determining whether the remote control device is powered off;

If the remote control device is not powered off, the operation of obtaining the current signal-to-noise ratio of the I/Q signal corresponding to the SDR module of the remote control device is returned to.

The embodiments of the present application further provide a computer-readable storage medium, where the computer-readable storage medium stores a computer program, the computer program includes program instructions, and the processor executes the program instructions to implement the present application The steps of the control method of the remote control device provided by the embodiment.

Wherein, the computer-readable storage medium may be the internal storage unit of the movable platform or the panoramic image generating device described in the foregoing embodiments, such as a hard disk or memory of the movable platform or the panoramic image generating device. The computer-readable storage medium may also be an external storage device of the movable platform or the panoramic image generation device, such as a plug-in hard disk equipped on the movable platform or the panoramic image generation device, a smart memory card (Smart Media) Card, SMC), secure digital (Secure Digital, SD) card, flash memory card (Flash Card), etc.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of various equivalents within the technical scope disclosed in the present application. Modifications or substitutions shall be covered by the protection scope of this application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A method for controlling a remote control device, comprising:

Obtain the current signal-to-noise ratio of the I/Q signal corresponding to the SDR module of the remote control device;

Acquiring calibration information corresponding to at least one digital interface of the remote control device, where the calibration information represents a mapping relationship between multiple operating modes of the at least one digital interface and changes in the signal-to-noise ratio of the I/Q signal;

According to the current signal-to-noise ratio and the calibration information, from a plurality of working modes of the at least one digital interface, determine the currently adapted working mode of the at least one digital interface;

The at least one digital interface is adjusted to the determined currently adapted working mode to update the current signal-to-noise ratio so that the updated current signal-to-noise ratio is higher than or equal to a preset signal-to-noise ratio threshold.
The method according to claim 1, wherein the at least one digital interface is determined from a plurality of working modes of the at least one digital interface according to the current signal-to-noise ratio and the calibration information The currently adapted working modes include:

determining the difference between the current signal-to-noise ratio and the preset signal-to-noise ratio threshold;

According to the calibration information, the working mode of the at least one digital interface corresponding to the difference value is determined as the working mode currently adapted by the at least one digital interface.
The method according to claim 2, wherein, according to the calibration information, the working mode of the at least one digital interface corresponding to the difference value is determined as the currently adapted working mode of the at least one digital interface. The working mode includes:

According to the calibration information, determine multiple groups of working modes of the digital interfaces corresponding to the difference values;

A set of working modes is selected from the multiple sets of working modes, and it is determined as the working modes currently adapted by the plurality of digital interfaces.
The method according to claim 3, wherein the selecting a group of operation modes from the plurality of groups of operation modes to determine the operation modes currently adapted to the plurality of the digital interfaces comprises:

determining a priority of a plurality of said digital interfaces;

According to the priority, a set of working modes is selected from the multiple sets of working modes, and it is determined as the working modes currently adapted by the plurality of the digital interfaces.
The method according to claim 4, wherein the determining the priorities of a plurality of the digital interfaces comprises:

The priorities of a plurality of the digital interfaces are determined according to the current application scenario of the remote control device.
The method according to claim 4, wherein the determining the priorities of a plurality of the digital interfaces comprises:

Display the digital interface priority setting interface;

The priorities of a plurality of the digital interfaces are determined according to a priority setting operation performed by the user based on the digital interface priority setting interface.
The method according to claim 1, wherein the digital interface comprises at least one of an HDMI interface, a USB interface, a MIPI interface, and a Wi-Fi interface;

The determining of the currently adapted working mode of the at least one digital interface includes at least one of the following:

determining the output resolution of the HDMI interface;

determining the interface type of the USB interface;

determining the operating frequency of the MIPI interface;

Make sure the Wi-Fi interface is on/off.
The method according to claim 7, wherein the higher the output resolution of the HDMI interface, the greater the influence on the change of the signal-to-noise ratio of the I/Q signal; the higher the operating frequency of the MIPI interface, The greater the influence on the variation of the signal-to-noise ratio of the I/Q signal.
The method according to claim 1, wherein before acquiring the current signal-to-noise ratio of the I/Q signal corresponding to the SDR module of the remote control device, the method comprises:

The at least one digital interface is set to the working mode before the last shutdown of the remote control device.
The method according to claim 1, wherein the acquiring calibration information corresponding to at least one digital interface of the remote control device comprises:

After the remote control device is powered on, if no touch operation by the user based on the preset calibration control is detected, query the saved first calibration information;

The first calibration information is determined as the calibration information corresponding to the at least one digital interface.
The method according to claim 10, wherein the acquiring calibration information corresponding to at least one digital interface of the remote control device comprises:

If a touch operation by the user based on the calibration control is detected, the working mode of the at least one digital interface is adjusted in sequence, second calibration information is generated, and the saved first calibration information is replaced with the second calibration information. calibration information;

The second calibration information is determined as the calibration information corresponding to the at least one digital interface.
The method according to claim 11, wherein the step of sequentially adjusting the working mode of the at least one digital interface to generate the second calibration information comprises:

Adjusting the working mode of the at least one digital interface in sequence, and determining the signal-to-noise ratio change of the I/Q signal in each working mode of each of the digital interfaces;

The second calibration information is generated according to changes in the signal-to-noise ratio of the I/Q signal in each operating mode of each of the digital interfaces.
The method according to any one of claims 1 to 12, wherein after adjusting the at least one digital interface to the determined working mode, the method comprises:

determining whether the remote control device is powered off;

If the remote control device is not powered off, the operation of obtaining the current signal-to-noise ratio of the I/Q signal corresponding to the SDR module of the remote control device is returned to.
A remote control device, characterized in that the remote control device includes a memory and a processor;

the memory is used to store computer programs;

The processor is configured to execute the computer program and implement the following steps when executing the computer program:

Obtain the current signal-to-noise ratio of the I/Q signal corresponding to the SDR module of the remote control device;

Acquiring calibration information corresponding to at least one digital interface of the remote control device, where the calibration information represents a mapping relationship between multiple operating modes of the at least one digital interface and changes in the signal-to-noise ratio of the I/Q signal;

According to the current signal-to-noise ratio and the calibration information, from a plurality of working modes of the at least one digital interface, determine the currently adapted working mode of the at least one digital interface;

The at least one digital interface is adjusted to the determined currently adapted working mode to update the current signal-to-noise ratio so that the updated current signal-to-noise ratio is higher than or equal to a preset signal-to-noise ratio threshold.
The remote control device according to claim 14, wherein the processor implements the multiple working modes of the at least one digital interface according to the current signal-to-noise ratio and the calibration information, When determining the currently adapted working mode of the at least one digital interface, it is used to implement:

determining the difference between the current signal-to-noise ratio and the preset signal-to-noise ratio threshold;

According to the calibration information, the working mode of the at least one digital interface corresponding to the difference value is determined as the working mode currently adapted by the at least one digital interface.
The remote control device according to claim 15, wherein the processor determines, according to the calibration information, the working mode of the at least one digital interface corresponding to the difference as the at least one digital interface. When a digital interface is currently adapted to the working mode, it is used to implement:

According to the calibration information, determine multiple groups of working modes of the digital interfaces corresponding to the difference values;

A set of working modes is selected from the multiple sets of working modes, and it is determined as the working modes currently adapted by the plurality of digital interfaces.
The remote control device according to claim 16, wherein, when the processor selects a group of operation modes from the plurality of groups of operation modes, the processor determines the operation mode currently adapted for the plurality of digital interfaces. When working in mode, it is used to achieve:

determining a priority of a plurality of said digital interfaces;

According to the priority, a set of working modes is selected from the multiple sets of working modes, and it is determined as the working modes currently adapted by the plurality of digital interfaces.
The remote control device according to claim 17, wherein when the processor implements the determining of the priorities of a plurality of the digital interfaces, the processor is configured to implement:

According to the current application scenario of the remote control device, the priorities of a plurality of the digital interfaces are determined.
The remote control device according to claim 17, wherein when the processor implements the determining of the priorities of a plurality of the digital interfaces, the processor is configured to implement:

Display the digital interface priority setting interface;

The priorities of a plurality of the digital interfaces are determined according to a priority setting operation performed by the user based on the digital interface priority setting interface.
The remote control device according to claim 14, wherein the digital interface comprises at least one of an HDMI interface, a USB interface, a MIPI interface, and a Wi-Fi interface;

The determining of the currently adapted working mode of the at least one digital interface includes at least one of the following:

determining the output resolution of the HDMI interface;

determine the interface type of the USB interface;

determining the operating frequency of the MIPI interface;

Make sure the Wi-Fi interface is on/off.
The remote control device according to claim 20, wherein the higher the output resolution of the HDMI interface, the greater the influence on the signal-to-noise ratio change of the I/Q signal; the higher the operating frequency of the MIPI interface , the greater the influence on the variation of the signal-to-noise ratio of the I/Q signal.
The remote control device according to claim 14, wherein, before the processor realizes the acquisition of the current signal-to-noise ratio of the I/Q signal corresponding to the SDR module of the remote control device, it is used to realize:

The at least one digital interface is set to the working mode before the last shutdown of the remote control device.
The remote control device according to claim 14, wherein when the processor realizes the acquisition of calibration information corresponding to at least one digital interface of the remote control device, the processor is configured to realize:

After the remote control device is powered on, if no touch operation by the user based on the preset calibration control is detected, query the saved first calibration information;

The first calibration information is determined as the calibration information corresponding to the at least one digital interface.
The remote control device according to claim 23, wherein when the processor realizes the acquisition of calibration information corresponding to at least one digital interface of the remote control device, the processor is configured to realize:

If a touch operation by the user based on the calibration control is detected, the working mode of the at least one digital interface is adjusted in sequence, second calibration information is generated, and the saved first calibration information is replaced with the second calibration information. calibration information;

The second calibration information is determined as the calibration information corresponding to the at least one digital interface.
The remote control device according to claim 24, characterized in that, when the processor realizes the adjustment of the working mode of the at least one digital interface in sequence and generates the second calibration information, the processor is used to realize:

Adjusting the working mode of the at least one digital interface in turn, and determining the signal-to-noise ratio change of the I/Q signal in each working mode of each of the digital interfaces;

The second calibration information is generated according to a signal-to-noise ratio change of the I/Q signal in each working mode of each of the digital interfaces.
The remote control device according to any one of claims 14 to 25, wherein the processor, after implementing the adjusting the at least one digital interface to the determined operating mode, is configured to implement:

determining whether the remote control device is powered off;

If the remote control device is not powered off, the operation of obtaining the current signal-to-noise ratio of the I/Q signal corresponding to the SDR module of the remote control device is returned to.
A remote control communication system, characterized in that the remote control communication system comprises a movable platform and a remote control device as claimed in any one of claims 14 to 26, wherein the remote control device is communicatively connected to the movable platform, for controlling the operation of the movable platform.
A computer-readable storage medium, characterized in that, the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the processor implements the method described in any one of claims 1 to 13. The control method of the remote control device described above.