WO2017177541A1

WO2017177541A1 - Interface system and interface control method for unmanned aerial vehicle

Info

Publication number: WO2017177541A1
Application number: PCT/CN2016/086309
Authority: WO
Inventors: 高鹏; 朱棣
Original assignee: 高鹏
Priority date: 2016-04-15
Filing date: 2016-06-17
Publication date: 2017-10-19
Also published as: CN105867190B; CN105867190A

Abstract

An interface system and an interface control method for an unmanned aerial vehicle. The system comprises: a physical interface (11) comprising multiple pins; at least one protocol conversion module (13) for performing communication protocol conversion on a target load (12) according to the communication protocol type of the target load (12) that accesses the physical interface (11); an I/O strong driver module (15) for driving the pins of the physical interface (11) according to configuration data and the communication protocol type of the target load (12); and a master controller (17) for configuring the functions of the pins of the physical interface (11) according to the configuration data of the target load (12), determining the communication protocol type of the target load (12) according to the configuration data, configuring the function of the protocol conversion module (13) according to the communication protocol type of the target load (12), communicating with the target load (12) by means of the I/O strong driver module (15) and the protocol conversion module (13), and implementing the function of the target load (12). Relatively high versatility of the load of the unmanned aerial vehicle can be achieved by means of a relatively small number of pins and a relatively small size of the physical interface (11), and the expandability of the unmanned aerial vehicle is enhanced.

Description

Interface system and interface control method for unmanned aerial vehicle

cross reference

The present application claims priority to Chinese Patent Application No. 201610236913.2, filed on Apr.

Technical field

The invention relates to the technical field of unmanned aerial vehicles, and in particular to an interface system and an interface control method for an unmanned aerial vehicle.

Background technique

Unmanned aerial vehicles (also known as unmanned aerial vehicles, drones, etc.) are unmanned aircraft that are either radio-controlled or under autonomous, semi-autonomous procedures. Because of its low cost, no risk of casualties, and good mobility, it is widely used in various fields of aerial photography, geological survey, line inspection, and emergency rescue. Among them, due to the development of integrated circuits and micro-system technology, the miniaturization of the UAV has been realized, greatly expanding the types of tasks that the UAV can perform. Depending on the task being performed, a small unmanned aerial vehicle usually needs to carry different loads.

Due to the wide variety of tasks, the load types are extremely rich, and the number of power rails, number of signal lines, and interface protocols required for various types of loads vary widely. It is difficult for existing common interface technologies to achieve all loads with limited size of small aircraft. Generalization.

Summary of the invention

technical problem

In view of this, the technical problem to be solved by the present invention is how to provide a universal interface system for an unmanned aerial vehicle.

solution

In order to solve the above technical problem, according to an embodiment of the present invention, an interface system for an unmanned aerial vehicle is provided, including:

Physical interface, including multiple pins;

At least one protocol conversion module, configured to perform a conversion of a communication protocol on the target payload according to a communication protocol type of a target payload that accesses the physical interface;

The I/O strong driving module is respectively connected to the protocol conversion module and the physical interface, and is configured to drive each pin of the physical interface according to the configuration data and the communication protocol type of the target load;

a main controller, which is respectively connected to the physical interface, the protocol conversion module, and the I/O strong driving module, and configured to configure a function of each pin of the physical interface according to the configuration data of the target load; Determining, by the configuration data, a communication protocol type of the target payload, and configuring a function of the protocol conversion module according to a communication protocol type of the target payload; and transmitting, by the I/O strong driving module, the protocol conversion module and the The target load communicates and performs the function of the target load.

For the above system, in a possible implementation manner, the method further includes:

Inserting a detection and identification module; performing insertion detection and identification on whether the physical interface is inserted into a target load.

In a possible implementation manner, the insertion detection and identification module includes:

The insertion detecting unit is configured to determine, according to the insertion value of the physical interface, the voltage value of the identification pin, whether the physical interface is inserted into the target load;

a load identification unit connected to the insertion detecting unit, configured to read configuration data from the target load by the insertion detection and identification pin in a case where the insertion detecting unit determines to insert the target load And verifying the configuration data.

In a possible implementation manner, the insertion detecting unit is further configured to control the I/O strong driving module to be broken when detecting that the target load is pulled out from the physical interface. Turning on, the protocol conversion module is controlled to stop working, and the insertion detecting unit is instructed to continue the insertion detection.

For the above system, in a possible implementation, the physical interface includes a general-purpose I/O pin, and the general-purpose I/O pin is connected to the I/O strong driving module.

For the above system, in a possible implementation manner,

The main controller is further configured to configure a function of each general-purpose I/O pin according to the configuration data;

The I/O strong driving module is further configured to control the first general-purpose I/O pin and the protocol conversion module if the main controller configures the first general-purpose I/O pin as an input Straight through; in the case where the main controller configures the second general purpose I/O pin as a digital output, controlling the second general purpose I/O pin to communicate with the protocol conversion module; When the third general purpose I/O pin is configured as a strong output, the signal received from the protocol conversion module is enhanced and sent to the third general purpose I/O pin; at the main controller When the fourth general purpose I/O pin is configured as a power supply output, the fourth general purpose I/O pin is controlled to be directly connected to the corresponding power rail.

In a possible implementation manner, the physical interface further includes an insertion detection and identification pin and a ground pin, and the main controller is further configured to control the insertion detection and identification pin and insertion detection. Connected to the identification module, the ground pin is connected to the system ground.

The invention also provides an interface control method for an unmanned aerial vehicle, the physical interface of the unmanned aerial vehicle comprising a plurality of pins;

The method includes:

Configuring a function of each pin of the physical interface according to configuration data of a target load accessing the physical interface;

Determining, according to the configuration data, a communication protocol type of the target payload, and configuring a function of the protocol conversion module according to the communication protocol type of the target payload;

Communicating with the target load through the I/O strong drive module and the protocol conversion module, and performing the function of the target load.

For the above method, in a possible implementation manner, the method further includes:

Insert detection and identification is performed on whether the physical interface is inserted into a target load.

For the above method, in a possible implementation manner, insertion detection and identification are performed on whether the physical interface is inserted into a target load, including:

Determining whether the physical interface is inserted into the target load according to a voltage value of the insertion detection and identification pin of the physical interface;

In a case where it is determined that the physical interface is inserted into the target load, configuration data is read from the target payload by the insertion detection and identification pin, and the configuration data is verified.

In case detecting that the target load is pulled out from the physical interface, the I/O strong driving module is controlled to be disconnected, the protocol conversion module is controlled to stop working, and the insertion detection is continued.

For the above method, in a possible implementation, the physical interface includes a general-purpose I/O pin, and the general-purpose I/O pin is connected to the I/O strong driving module, and the method further includes:

The function of each general-purpose I/O pin is configured according to the configuration data.

For the above method, in a possible implementation, the configuring the functions of each general-purpose I/O pin according to the configuration data includes:

In a case where the main controller configures the first general-purpose I/O pin as an input, the I/O strong driving module controls the first general-purpose I/O pin to communicate with the protocol conversion module;

In the case that the main controller configures the second general-purpose I/O pin as a digital output, the I/O strong driving module controls the second general-purpose I/O pin to communicate with the protocol conversion module;

In a case where the main controller configures the third general-purpose I/O pin as a strong output, the I/O strong driving module performs enhancement processing on the signal received from the protocol conversion module, and then sends the signal to the third pass. Use I/O pins;

In a case where the main controller configures the fourth general-purpose I/O pin as a power output, the I/O strong driving module controls the fourth general-purpose I/O pin to be directly connected to the corresponding power rail.

For the above method, in a possible implementation, the physical interface further includes an insertion detection and identification pin and a ground pin, and the method further includes:

The main controller controls the insertion detection and identification pin to be connected to the insertion detection and identification module, and controls the ground pin to be connected to the system ground.

Beneficial effect

The embodiment of the present invention can identify the configuration data of the inserted target payload, configure the function of each pin in the physical interface to meet the requirements of various target loads on the interface, and the protocol conversion module can convert any defined protocol on the target payload into A unified universal protocol to achieve communication between the target payload and the UAV master controller. Through the embodiment of the invention, the load of the drone can achieve greater versatility with fewer pins and physical interface sizes, greatly enhancing the scalability of the drone.

The interface control method and the interface system according to the embodiments of the present invention can adaptively allocate all the connection pins as power supply or data interfaces, and can adapt to any number of power rails, ground rails, and signal lines, and the signal lines can be realized by the interface conversion device. Any defined interface protocol.

Further features and aspects of the embodiments of the present invention will become apparent from the Detailed Description of the Drawing.

DRAWINGS

The accompanying drawings, which are incorporated in FIG

1 is a schematic structural view of an interface system of an unmanned aerial vehicle according to an embodiment of the present invention;

2 shows a structural diagram of an interface system of an unmanned aerial vehicle according to another embodiment of the present invention. intention;

3 is a flow chart showing an interface control method of an unmanned aerial vehicle according to an embodiment of the present invention;

4 is a schematic flow chart showing another interface control method of an unmanned aerial vehicle according to an embodiment of the present invention;

FIG. 5 is a flow chart showing an interface control method of an unmanned aerial vehicle according to another embodiment of the present invention; FIG.

Fig. 6 is a block diagram showing the structure of an interface control device for an unmanned aerial vehicle according to another embodiment of the present invention.

detailed description

Various exemplary embodiments, features, and aspects of the invention are described in detail below with reference to the drawings. The same reference numerals in the drawings denote the same or similar elements. Although the various aspects of the embodiments are illustrated in the drawings, the drawings are not necessarily drawn to scale unless otherwise indicated.

The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustrative." Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or preferred.

In addition, numerous specific details are set forth in the Detailed Description of the invention in the Detailed Description. Those skilled in the art will appreciate that the invention may be practiced without some specific details. In some instances, methods, means, components, and circuits that are well known to those skilled in the art are not described in detail in order to facilitate the invention.

Example 1

1 is a block diagram showing the structure of an interface system of an unmanned aerial vehicle according to an embodiment of the present invention. As shown in FIG. 1 , the interface system of the unmanned aerial vehicle may mainly include:

Physical interface 11, comprising a plurality of pins;

At least one protocol conversion module 13 for receiving a target load 12 according to the physical interface 11 a communication protocol type for performing a conversion of a communication protocol to the target payload 12;

An I/O (input/output port) strong driving module 15 is respectively connected to the protocol conversion module 13 and the physical interface 11 for configuring data and a communication protocol type according to the target load 12. Driving each pin of the physical interface 11;

The main controller 17 is connected to the physical interface 11, the protocol conversion module 13, and the I/O strong driving module 15, respectively, for configuring the reference of the physical interface 11 according to the configuration data of the target load 12. a function of the foot; determining a communication protocol type of the target load 12 according to the configuration data, and configuring a function of the protocol conversion module 13 according to a communication protocol type of the target load 12; and driving through the I/O The module 15 and the protocol conversion module 13 communicate with the target load 12 and perform the function of the target load 12.

The embodiment of the invention can realize a universal interface system applied to the load of a small unmanned aerial vehicle, and provides functions such as power supply and data transmission for any payload complying with the interface standard through the interface.

Example 2

2 is a block diagram showing the structure of an interface system of an unmanned aerial vehicle according to another embodiment of the present invention. The same components in Fig. 2 as those in Fig. 1 have the same functions, and a detailed description of these components will be omitted for the sake of brevity.

As shown in FIG. 2, the main difference between the embodiment and the previous embodiment is that the interface system of the unmanned aerial vehicle may further include:

The insertion detection and identification module 21 is configured to perform insertion detection and identification on whether the physical interface 11 is inserted into the target load 12.

In a possible implementation manner, the insertion detection and identification module 21 includes:

The insertion detecting unit is configured to determine whether the physical interface 11 is inserted into the target load 12 according to the voltage value of the insertion detection and identification pin of the physical interface 11;

a load identification unit coupled to the insertion detection unit for determining at the insertion detection unit In the case where the target load 12 is inserted, the configuration data is read from the target load 12 by the insertion detection and identification pin, and the configuration data is verified.

In a possible implementation, the insertion detecting unit is further configured to control the I/O strong driving module 15 to be disconnected if it is detected that the target load 12 is pulled out from the physical interface 11 And controlling the protocol conversion module 13 to stop working, and instructing the insertion detecting unit to continue the insertion detection.

In a possible implementation, the physical interface 11 includes a general purpose I/O pin that is connected to the I/O strong drive module 15.

In a possible implementation manner, the main controller 17 is further configured to configure a function of each general-purpose I/O pin according to the configuration data;

The I/O strong driving module 15 is further configured to control the first general-purpose I/O pin and the protocol if the main controller 17 configures the first general-purpose I/O pin as an input. The conversion module 13 is directly connected; in the case where the main controller 17 configures the second general-purpose I/O pin as a digital output, the second general-purpose I/O pin is controlled to be directly connected to the protocol conversion module 13; When the main controller 17 configures the third general-purpose I/O pin as a strong output, the signal received from the protocol conversion module 13 is enhanced and sent to the third general-purpose I/O pin. In this case, the driving capability of the signal processed by the I/O strong driving module 15 is enhanced, and the signal level output by the protocol conversion module 13 is the same as the signal level of the third general-purpose I/O pin; In the case where the main controller 17 configures the fourth general-purpose I/O pin as a power supply output, the fourth general-purpose I/O pin is controlled to be directly connected to the corresponding power rail.

In a possible implementation manner, the physical interface 11 further includes an insertion detection and identification pin and a ground pin, and the main controller 17 is further configured to use the insertion detection and identification pin and the insertion detection and identification module. 21 is connected, and the ground pin is connected to the system ground.

Specifically, as shown in FIG. 2, the target load 12 is connected to the insertion detection and recognition module 21 through the physical interface 11, the insertion and detection module determines the insertion action of the target load 12, and identifies features such as the specific model of the target load 12. The target load 12 passes through the physical interface 11 and the I/O strong drive module 15 Connected, further connected to the protocol conversion module 13, wherein the I/O strong drive module 15 enhances the output signal driving capability of the protocol conversion module 13. The drone main controller 17 is connected to the insertion detecting and identifying module 21 to complete the identification of the load. The drone master controller 17 is connected to the protocol conversion module 13 via, for example, a USB (Universal Serial Bus) protocol to implement communication with a payload. The UAV main controller 17 is connected to the I/O strong drive module 15, and the I/O strong drive module 15 is functionally configured.

Among them, the function of each module is as follows:

1) UAV main controller 17: This part can be composed of an application processor and its peripheral circuits;

2) Target load 12: This part is connected to the physical interface of the micro-unmanned aerial vehicle to achieve a certain functional load. The target load 12 includes, but is not limited to, a camera, a pan/tilt head, a robotic arm, a searchlight, a smoking device, and the like. The target payload 12 should have at least one memory (such as a Flash chip), an insertion detection and identification pin, four ground pins, and one general-purpose I/O pin. Wherein the target load 12 and the physical interface 11 are inserted into the detection and identification pin, the output level is clamped to a system such as 3.3V by a clamp diode, and the general-purpose I/O pin of the target load 12 is numbered 0 is connected to the system of the load system. Power supply, the data port of the Flash chip is connected to the insertion detection and identification pin;

3) Physical interface 11: This part is the actual physical interface 11 of the micro-UAV connected to the target payload 12, including a number of connected pins. For example, the physical interface 11 can include one insertion detection and identification pin, four ground pins, a number of general purpose I/O pins, and the like. The insertion detection and identification pin is connected to the insertion detection and identification module 21, the general-purpose I/O pin is connected to the I/O strong drive module 15, and the ground pin is connected to the system ground;

4) Insertion detection and identification module 21: The portion includes an insertion detection circuit and a load identification module. The insertion detection circuit pulls the insertion detection and identification pin up to, for example, a 3.6V power supply through, for example, a 100K resistor, and the insertion detection and identification pin is high. Resistance input. The load identification module acquires configuration data of the target load 12 by inserting the detection and identification pin and the inserted target payload 12 by, for example, a 1-Wire protocol.

5) Protocol Conversion Module 13: The protocol conversion module 13 may be composed of, for example, a programmable logic device. The protocol conversion module 13 reprograms the target load 12 according to the recognition result of the insertion detection and identification module 21 by the unmanned host controller 17 to convert the load-supported communication protocol into a standard USB device and is connected to the master. Complete the bridging function of communication;

6) I/O strong drive module 15: This module is used to strongly drive the general-purpose I/O pin output. If the drone main controller 17 configures a general-purpose I/O pin of the physical interface as an input, then The I/O strong drive module 15 controls the pin to communicate with the protocol conversion module 13. If the drone main controller 17 configures a general-purpose I/O pin as a digital output, the I/O strong drive module 15 controls the pin to communicate with the protocol conversion module 13. If the drone main controller 17 configures a general-purpose I/O pin as a strong output, the I/O strong drive module 15 controls the pin to be connected to the I/O drive circuit protocol conversion module 13. If the drone master controller 17 configures a general purpose I/O pin as a power supply output, the I/O strong drive module 15 controls the pin to be connected to the corresponding power rail.

Example 3

FIG. 3 is a flow chart showing an interface control method of an unmanned aerial vehicle according to an embodiment of the present invention.

The interface control method of the present embodiment can be applied to an interface system of an unmanned aerial vehicle as shown in any of the structures of FIGS. 1 and 2.

As shown in FIG. 3, the interface control method of the unmanned aerial vehicle may mainly include: the method includes:

Step 401: Configure a function of each pin of the physical interface according to configuration data of a target load that accesses the physical interface.

Step 402: Determine a communication protocol type of the target payload according to the configuration data, and configure a function of the protocol conversion module according to the communication protocol type of the target payload.

Step 403: Communicate with the target load through the I/O strong driving module and the protocol conversion module, and execute the function of the target load.

In a possible implementation, as shown in FIG. 4, before step 401, the method further includes:

Step 400: Perform insertion detection and identification on whether the physical interface is inserted into the target load. If it is detected that the target load is inserted into the physical interface and the target load is successfully identified, step 401 is performed.

Specifically, step 400 can include:

Step 4001: Determine, according to the insertion value of the physical interface, the voltage value of the identification pin, whether the physical interface is inserted into the target load;

Step 4002: In a case where it is determined that the physical interface is inserted into the target payload, configuration data is read from the target payload by the insertion detection and identification pin, and the configuration data is verified.

In a possible implementation, after step 403, the method further includes:

Step 404: When detecting that the target load is pulled out from the physical interface, control the I/O strong driving module to be disconnected, control the protocol conversion module to stop working, and return to perform insertion detection.

In a possible implementation manner, the physical interface of the drone includes a plurality of pins, for example, the physical interface includes a general-purpose I/O pin, and the general-purpose I/O pin and the I/O strong driving module The method further includes: Step 406: Configure a function of each general-purpose I/O pin according to the configuration data.

Specifically, step 406 can include any one or more of the following:

In a case where the main controller configures the third general-purpose I/O pin as a strong output, the I/O strong driving module performs enhancement processing on the signal received from the protocol conversion module, and then sends the signal to the third universal I/O pin;

In a possible implementation, the physical interface further includes an insertion detection and identification pin and a ground pin, and the method further includes:

Step 407: The main controller controls the insertion detection and identification pin to be connected to the insertion detection and identification module, and controls the ground pin to be connected to the system ground.

The timings of the steps 406 and 407 may be interchanged or may be performed at the same time, which is not specifically limited in this embodiment.

Example 4

FIG. 5 is a flow chart showing an interface control method of an unmanned aerial vehicle according to another embodiment of the present invention.

As shown in FIG. 5, an exemplary process for performing interface control on the interface systems of Embodiments 1 and 2 can be divided into the following steps: an insertion detection phase 501, an identification phase 502, a connection establishment phase 503, a communication phase 504, and an extraction process. Stage 505.

Insertion detection phase 501: At this stage, the UAV main controller 17 continuously reads the insertion detection and identification pin voltage value, and if it is 3.6 V, it judges that the load is not inserted, and continues to stay in the insertion detection phase. If the read voltage is 3.3V (affected by the clamp diode on the load), it is considered that the payload has been inserted and enters the identification phase. The stage protocol conversion module 13 does not work, and the I/O strong drive module 15 is in an off state;

Identification stage 502: This stage first drives the general-purpose I/O numbered 0 to the system power supply by the I/O strong drive module 15, the load digital power supply is powered on and started, and the load identification module in the insertion detection and identification module 21 passes through 1- The Wire protocol reads the configuration data in the Flash in the target payload 12 and performs verification. If the verification passes, the connection establishment phase is entered, and if the verification fails, the interpolation detection phase is returned;

Connection establishment phase 503: This phase first determines all of the physical interfaces 11 by the UAV main controller 17 based on the configuration data in the Flash in the target payload 12 read by the load identification module in the insertion detection and identification module 21 in the identification phase. The functions of the general-purpose I/O pins (input, digital output, strong output, or power output) are used to configure the I/O strong drive module 15. After being controlled by the drone master The device 17 determines the communication protocol type of the payload according to the configuration data, and sequentially converts the module 13 according to the configuration protocol. After the configuration is completed, the UAV main controller 17 attempts to initiate a communication request to the target load 12 through the protocol conversion module 13 and the I/O strong drive module 15, and enters the communication phase if a correct response is obtained, otherwise returns to the identification phase;

Communication phase 504: This phase is communicated with the target load 12 by the UAV main controller 17 through the protocol conversion module 13 and the I/O strong drive module 15 and performs the load function, while the UAV main controller 17 continuously reads Insert the voltage value of the detection and identification pin. If the voltage value is 3.6V, it will enter the pull-out phase, otherwise it will remain in the communication phase;

Pull-out phase 505: This stage is controlled by the drone master controller 17 to return the I/O strong drive module 15 to the disconnected state, and the control protocol conversion module 13 stops working, and then enters the insertion detection phase.

Embodiments of the present invention provide a complete universal payload interface system and control method that can be applied to a micro UAV. In a specific implementation, the interface system can provide a reconfigurable access method for a load, and the system can recognize the inserted The target payload configuration data configures the general purpose I/O in the interface into multiple functions to accommodate the interface requirements of various target loads. At the same time, the protocol conversion module can convert any defined protocol on the target payload into a unified USB protocol to achieve communication between the target payload and the main controller of the drone. Through the embodiment of the invention, the load of the micro drone can achieve greater versatility with fewer pins and physical interface sizes, greatly enhancing the scalability of the micro drone.

Example 5

Fig. 6 is a block diagram showing the structure of an interface control device for an unmanned aerial vehicle according to another embodiment of the present invention. The interface control device 1100 of the unmanned aerial vehicle may be a host server having a computing capability, a personal computer PC, or a portable computer or terminal that can be carried. The specific embodiments of the present invention do not limit the specific implementation of the computing node.

The interface control device 1100 of the unmanned aerial vehicle includes a processor 1110, a communication interface 1120, a memory 1130, and a bus 1140. The processor 1110, the communication interface 1120, and the memory 1130 complete each other through the bus 1140. Communication between.

Communication interface 1120 is for communicating with network devices, including, for example, a virtual machine management center, shared storage, and the like.

The processor 1110 is configured to execute a program. The processor 1110 may be a central processing unit CPU, or an Application Specific Integrated Circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present invention.

The memory 1130 is used to store files. The memory 1130 may include a high speed RAM memory and may also include a non-volatile memory such as at least one disk memory. Memory 1130 can also be a memory array. The memory 1130 may also be partitioned, and the blocks may be combined into a virtual volume according to certain rules.

In a possible implementation, the above program may be program code including computer operating instructions. The program can be specifically used to: perform the operations of the steps in Embodiment 3 or 4.

Those of ordinary skill in the art will appreciate that the various exemplary elements and algorithm steps in the embodiments described herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can select different methods for implementing the described functions for a particular application, but such implementation should not be considered to be beyond the scope of the present invention.

If the function is implemented in the form of computer software and sold or used as a stand-alone product, it is considered to some extent that all or part of the technical solution of the present invention (for example, a part contributing to the prior art) is It is embodied in the form of computer software products. The computer software product is typically stored in a computer readable non-volatile storage medium, including instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform all of the methods of various embodiments of the present invention. Or part of the steps. The foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the appended claims.

Practicality

Claims

An interface system for an unmanned aerial vehicle, comprising:

Physical interface, including multiple pins;

At least one protocol conversion module, configured to perform a conversion of a communication protocol on the target payload according to a communication protocol type of a target payload that accesses the physical interface;

The I/O strong driving module is respectively connected to the protocol conversion module and the physical interface, and is configured to drive each pin of the physical interface according to the configuration data and the communication protocol type of the target load;

a main controller, which is respectively connected to the physical interface, the protocol conversion module, and the I/O strong driving module, and configured to configure a function of each pin of the physical interface according to the configuration data of the target load; Determining, by the configuration data, a communication protocol type of the target payload, and configuring a function of the protocol conversion module according to a communication protocol type of the target payload; and transmitting, by the I/O strong driving module, the protocol conversion module and the The target load communicates and performs the function of the target load.
The system of claim 1 further comprising:

Inserting a detection and identification module; performing insertion detection and identification on whether the physical interface is inserted into a target load.
The system of claim 2 wherein said insertion detection and identification module comprises:

The insertion detecting unit is configured to determine, according to the insertion value of the physical interface, the voltage value of the identification pin, whether the physical interface is inserted into the target load;

a load identification unit connected to the insertion detecting unit, configured to read configuration data from the target load by the insertion detection and identification pin in a case where the insertion detecting unit determines to insert the target load And verifying the configuration data.
The system according to claim 3, wherein said insertion detecting unit is further configured to control said I/O strong drive in case detecting that said target load is pulled out from said physical interface The moving module is disconnected, the protocol conversion module is controlled to stop working, and the insertion detecting unit is instructed to continue the insertion detection.
The system of any of claims 1 to 4, wherein the physical interface comprises a general purpose I/O pin, the general purpose I/O pin being coupled to the I/O strong drive module.
The system of claim 5 wherein:

The main controller is further configured to configure a function of each general-purpose I/O pin according to the configuration data;

The I/O strong driving module is further configured to control the first general-purpose I/O pin and the protocol conversion module if the main controller configures the first general-purpose I/O pin as an input Straight through; in the case where the main controller configures the second general purpose I/O pin as a digital output, controlling the second general purpose I/O pin to communicate with the protocol conversion module; When the third general purpose I/O pin is configured as a strong output, the signal received from the protocol conversion module is enhanced and sent to the third general purpose I/O pin; at the main controller When the fourth general purpose I/O pin is configured as a power supply output, the fourth general purpose I/O pin is controlled to be directly connected to the corresponding power rail.
The system of claim 5 wherein said physical interface further comprises an insertion detection and identification pin and a ground pin, said main controller further for controlling said insertion detection and identification pin and insertion detection Connected to the identification module, the ground pin is connected to the system ground.
An interface control method for an unmanned aerial vehicle, characterized in that the physical interface of the unmanned aerial vehicle includes a plurality of pins;

The method includes:

Configuring a function of each pin of the physical interface according to configuration data of a target load accessing the physical interface;

Determining, according to the configuration data, a communication protocol type of the target payload, and configuring a function of the protocol conversion module according to the communication protocol type of the target payload;

Communicating with the target load through the I/O strong drive module and the protocol conversion module, and performing the function of the target load.
The method of claim 8 further comprising:

Insert detection and identification is performed on whether the physical interface is inserted into a target load.
The method according to claim 9, wherein the insertion detection and identification of whether the physical interface is inserted into the target load comprises:

Determining whether the physical interface is inserted into the target load according to a voltage value of the insertion detection and identification pin of the physical interface;

In a case where it is determined that the physical interface is inserted into the target load, configuration data is read from the target payload by the insertion detection and identification pin, and the configuration data is verified.
The method of claim 10, further comprising:

In case detecting that the target load is pulled out from the physical interface, the I/O strong driving module is controlled to be disconnected, the protocol conversion module is controlled to stop working, and the insertion detection is continued.
The method according to any one of claims 8 to 11, wherein the physical interface comprises a general purpose I/O pin, and the general purpose I/O pin is connected to the I/O strong drive module. The method further includes:

The function of each general-purpose I/O pin is configured according to the configuration data.
The method according to claim 12, wherein the configuring the functions of each general-purpose I/O pin according to the configuration data comprises:

In a case where the main controller configures the first general-purpose I/O pin as an input, the I/O strong driving module controls the first general-purpose I/O pin to communicate with the protocol conversion module;

In the case that the main controller configures the second general-purpose I/O pin as a digital output, the I/O strong driving module controls the second general-purpose I/O pin to communicate with the protocol conversion module;

In a case where the main controller configures the third general-purpose I/O pin as a strong output, the I/O strong driving module performs enhancement processing on the signal received from the protocol conversion module, and then sends the signal to the third universal I/O pin;

In a case where the main controller configures the fourth general-purpose I/O pin as a power output, the I/O strong driving module controls the fourth general-purpose I/O pin to be directly connected to the corresponding power rail.
The method of claim 12, wherein the physical interface further comprises an insertion detection and identification pin and a ground pin, the method further comprising:

The main controller controls the insertion detection and identification pin to be connected to the insertion detection and identification module, and controls the ground pin to be connected to the system ground.