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WO2019227311A1 - Circuit et dispositif de traitement de signal et procédé de traitement de mode de communication - Google Patents

Circuit et dispositif de traitement de signal et procédé de traitement de mode de communication Download PDF

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Publication number
WO2019227311A1
WO2019227311A1 PCT/CN2018/088875 CN2018088875W WO2019227311A1 WO 2019227311 A1 WO2019227311 A1 WO 2019227311A1 CN 2018088875 W CN2018088875 W CN 2018088875W WO 2019227311 A1 WO2019227311 A1 WO 2019227311A1
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WO
WIPO (PCT)
Prior art keywords
communication mode
signal processing
radio frequency
processing circuit
processor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2018/088875
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English (en)
Chinese (zh)
Inventor
赵宇鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SZ DJI Technology Co Ltd
Original Assignee
SZ DJI Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SZ DJI Technology Co Ltd filed Critical SZ DJI Technology Co Ltd
Priority to PCT/CN2018/088875 priority Critical patent/WO2019227311A1/fr
Priority to CN201880012517.9A priority patent/CN110337817B/zh
Publication of WO2019227311A1 publication Critical patent/WO2019227311A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
    • G05B19/0423—Input/output
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2209/00—Arrangements in telecontrol or telemetry systems
    • H04Q2209/40—Arrangements in telecontrol or telemetry systems using a wireless architecture

Definitions

  • the present application relates to the field of hardware, and more particularly, to a signal processing circuit, a chip, a communication device, a drone, and a processing method for a communication mode.
  • the printed circuit board (Printed Circuit Board) space occupied by the signal processing circuit used is as small as possible.
  • the current cost of the signal processing circuit is relatively high.
  • the embodiments of the present application provide a signal processing circuit, a communication device, a drone, and a communication mode processing method, which can reduce the PCB space occupied by the signal processing circuit and reduce the cost of the signal processing circuit.
  • a signal processing circuit including: at least two modems, a signal conversion circuit, a first control circuit, a second control circuit, and a processor; wherein the at least two modems are connected to the time-divisionally A signal conversion circuit; the signal conversion circuit is connected to a radio frequency transceiver and is used to transform a signal transmitted between the radio frequency transceiver and the modem; and the processor is used to control the radio frequency using the first control circuit
  • the at least two modems are connected to the signal conversion circuit in a time-sharing manner; the processor or the adjustment demodulator uses the second control circuit to control the radio frequency transceiver.
  • a chip including the signal processing circuit according to the first aspect.
  • a communication device including the signal processing circuit according to the first aspect.
  • a drone including the communication device according to the third aspect.
  • a method for processing a communication mode is provided.
  • the method is used for a signal processing circuit.
  • the signal processing circuit includes at least two modems, a signal conversion circuit, a first control circuit, a second control circuit, and processing.
  • the communication modes applicable to each of the at least two modems are different and are connected to the signal conversion circuit in a time-sharing manner;
  • the signal conversion circuit is connected to a radio frequency transceiver and is used for the radio frequency transceiver Transforming a signal transmitted with the modem;
  • the method includes determining a first modem from the at least two modems, the first modem corresponding to a first communication mode, and the first communication mode is Adopted communication mode;
  • the processor uses the first control circuit to connect the first modem with the signal conversion circuit; and the processor uses the second control based on the first communication mode
  • the circuit controls the radio frequency transceiver, or the first modem utilizes the second Circuit controls the RF transceiver.
  • the processor uses the first control circuit to control at least two modems to be time-shared with the signal conversion circuit, and the processor or modem uses the second control circuit to control the radio frequency transceiver, so that at least two modems can be implemented.
  • the internal resources of the signal processing circuit are time-multiplexed during operation.
  • the processor, the signal conversion circuit, and the second control circuit for controlling the radio frequency transceiver can be time-multiplexed, thereby reducing the number of signals used in the signal processing circuit.
  • a device that communicates with the outside world thereby reducing the PCB space occupied by the signal processing circuit and reducing the cost of the signal processing circuit.
  • FIG. 1 is a schematic block diagram of a drone system according to an embodiment of the present application.
  • FIG. 2 is a schematic block diagram of a signal processing circuit according to an embodiment of the present application.
  • FIG. 3 is a schematic block diagram of another signal processing circuit according to an embodiment of the present application.
  • FIG. 4 is a schematic block diagram of another signal processing circuit according to an embodiment of the present application.
  • FIG. 5 is a schematic block diagram of a MUX according to an embodiment of the present application.
  • FIG. 6 is a schematic block diagram of a DEMUX according to an embodiment of the present application.
  • FIG. 7 is a schematic block diagram of another signal processing circuit according to an embodiment of the present application.
  • FIG. 8 is a schematic block diagram of another signal processing circuit according to an embodiment of the present application.
  • FIG. 9 is a schematic flowchart of a communication mode switching method according to an embodiment of the present application.
  • FIG. 10 is a schematic block diagram of a communication device according to an embodiment of the present application.
  • FIG. 11 is a schematic block diagram of another communication device according to an embodiment of the present application.
  • FIG. 12 is a schematic flowchart of a communication mode processing method according to an embodiment of the present application.
  • FIG. 1 is a schematic architecture diagram of an unmanned flight system 100 according to an embodiment of the present application. This embodiment is described by taking a rotorcraft as an example.
  • the unmanned aerial system 100 may include an unmanned aerial vehicle (UAV) 110, a carrier 120, a display device 130, and a remote control device 140.
  • the UAV 110 may include a power system 150, a flight control system 160, and a chassis 170. UAV 110 can perform wireless communication with remote control device 140 and display device 130.
  • the chassis 170 may include a fuselage and a tripod (also referred to as a landing gear).
  • the fuselage may include a center frame and one or more arms connected to the center frame. One or more arms extend radially from the center frame.
  • the tripod is connected to the fuselage and is used to support the UAV 110 when landing.
  • the power system 150 may include an electronic speed governor (referred to as an ESC for short) 151, one or more propellers 153, and one or more electric motors 152 corresponding to the one or more propellers 153, where the electric motor 152 is connected to the electronic governor Between 151 and the propeller 153, the motor 152 and the propeller 153 are arranged on the corresponding arms; the electronic governor 151 is used to receive the driving signal generated by the flight controller 160, and provides a driving current to the motor 152 according to the driving signal to control The speed of the motor 152. The motor 152 is used to drive the propeller to rotate, so as to provide power for UAV 110's flight. This power enables UAV 110 to achieve one or more degrees of freedom. It should be understood that the motor 152 may be a DC motor or an AC motor. In addition, the motor 152 may be a brushless motor or a brush motor.
  • the flight control system 160 may include a flight controller 161 and a sensing system 162.
  • the sensing system 162 is used to measure the attitude information of the UAV.
  • the sensing system 162 may include at least one of sensors such as a gyroscope, an electronic compass, an Inertial Measurement Unit (IMU), a vision sensor, a GPS (Global Positioning System), and a barometer.
  • the flight controller 161 is used to control the flight of the UAV 110. For example, the flight controller 161 can control the flight of the UAV 110 according to the attitude information measured by the sensing system 162.
  • the carrier 120 may be used to carry a load 180.
  • the load 180 may be a photographing device (for example, a camera, a video camera, etc.).
  • the embodiments of the present application are not limited thereto.
  • the carrier may also be used for carrying a weapon or other load. Bearer equipment.
  • the display device 130 is located on the ground side of the unmanned flight system 100, and can communicate with the UAV 110 wirelessly, and can be used to display the attitude information of the UAV 110.
  • the load 123 is a photographing device
  • an image captured by the photographing device may also be displayed on the display device 130.
  • the display device 130 may be an independent device or may be provided in the remote control device 140.
  • the remote control device 140 is located on the ground side of the unmanned flight system 100, and can communicate with the UAV 110 wirelessly for remote control of the UAV 110.
  • the remote control device may be, for example, a remote controller or a remote control device installed with an APP (Application, Application) for controlling UAV, such as a smart phone, a tablet computer, or the like.
  • APP Application, Application
  • receiving a user's input through a remote control device may refer to controlling the UAV through an input device such as a wheel, a button, a button, a joystick on the remote control or a user interface (UI) on the remote control device.
  • UI user interface
  • the drone's remote control device can include devices that support different communication modes, for example, it can include devices that support the Institute of Electrical and Electronics Engineers (Electronics and Electronics Engineers, IEEE) 802.11 communication mode (for example, smartphones, tablets) It can also include devices that support non-IEEE802.11 standard device-to-device (Device to Device (D2D)) communication mode (for example, remote control).
  • the IEEE802.11 communication mode has wider applicability. For example, it can be connected to any intelligent device. Mobile phones, but non-IEEE802.11 standard D2D communication modes, such as private communication modes for drone communications, have better communication performance.
  • the D2D communication mode may refer to a communication mode in which two or more communication devices (for example, a drone and a remote controller) communicate directly through radio frequency, and does not need to include an access point (Access Point, AP) or base station (Base Station, BS) and other communication infrastructure.
  • AP Access Point
  • BS Base Station
  • the embodiments of the present application provide the following solutions, which can reduce the occupation of the signal processing circuit. PCB space, and can further reduce the cost of signal processing circuits to reduce the cost of drones.
  • embodiments of the present application are not limited to the above-mentioned scenarios for remotely controlling the drone through different communication modes, and the embodiments of the present application may also be used in other scenarios, for example, multiple Communication terminal and smart home.
  • FIG. 2 is a schematic block diagram of a signal processing circuit 200 according to an embodiment of the present application.
  • the signal processing circuit in the embodiment of the present application may be provided in a chip, and the chip may be referred to as a system chip, a chip system, a system on chip (SOC), or a baseband chip.
  • the chip may be referred to as a system chip, a chip system, a system on chip (SOC), or a baseband chip.
  • the signal processing circuit 200 may include at least two modems 210, a signal conversion circuit 220, a first control circuit 230, a second control circuit 240, and a processor 250.
  • At least two modems 210 may be connected to the signal conversion circuit 220 in a time-sharing manner for modulating a signal to be output and demodulating the acquired signal.
  • At least two modems 210 connected to the signal conversion circuit 220 in a time-sharing manner may mean that one modem 210 may be connected to the signal conversion circuit 220 at the same time.
  • the signal conversion circuit 220 is connected to a radio frequency transceiver (RF, Transceiver, RF Transceiver), and is used to convert signals transmitted between the radio frequency transceiver and the modem 210.
  • RF radio frequency transceiver
  • the processor 250 is configured to use the first control circuit 230 to control at least two modems 210 to be time-connected to the signal conversion circuit 220.
  • the processor 250 or the modem 210 controls the radio frequency transceiver using the second control circuit 240. Specifically, parameters such as radio frequency on or off, path gain, radio frequency bandwidth, and radio frequency channel can be controlled, and the internal working state of the radio frequency chip can also be read through the second control circuit 240.
  • the signal conversion circuit 220 in the signal processing circuit 200 may be connected to the radio frequency transceiver 300, and the radio frequency transceiver 300 may be independent of the signal processing circuit 200.
  • the signal processing circuit 200 may also include a radio frequency transceiver. This is not specifically limited.
  • the processor 250 uses the first control circuit 230 to control at least two modems 210 to be time-shared with the signal conversion circuit 220, and the processor 250 uses the second control circuit 240 to control the radio frequency transceiver, or In other modes, the modem 210 uses the second control circuit 240 to control the radio frequency transceiver, so that at least two modems 210 can work internally and time multiplexing the internal resources of the signal processing circuit 200. For example, it can time multiplex the processor 250 and signal conversion
  • the circuit 220 and the second control circuit 240 for controlling the radio frequency transceiver can reduce the components in the signal processing circuit 200 for communicating with the outside world, reduce the cost of the signal processing circuit, and reduce the PCB space occupied.
  • At least two modems 210 are connected to the same radio frequency transceiver during operation, therefore, only one radio frequency transceiver may be required. Therefore, it has lower equipment cost and occupies less PCB space.
  • the above-mentioned processor 250 may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), and a ready-made programmable gate.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • Array Field Programmable Gate Array, FPGA
  • the general-purpose processor may be a microprocessor, or the processor may be any conventional processor.
  • the signal processing circuit 200 may further include a memory.
  • the signal processing circuit 200 may include a memory 260.
  • the memory 260 may store computer instructions, and the processor 250 may call the computer instructions stored in the memory 260 to control the connection between the modem 210 and the signal conversion circuit 220 and control the radio frequency transceiver.
  • the foregoing memory 260 may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EROM), and an electronic memory. Erase programmable read-only memory (EPROM, EEPROM) or flash memory.
  • the volatile memory may be Random Access Memory (RAM), which is used as an external cache.
  • RAM Static Random Access Memory
  • DRAM Dynamic Random Access Memory
  • Synchronous Dynamic Random Access Memory Synchronous Dynamic Random Access Memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double SDRAM, DDR SDRAM enhanced synchronous dynamic random access memory
  • Enhanced SDRAM, ESDRAM synchronous connection dynamic random access memory
  • Synchronous DRAM Synchronous Dynamic Random Access Memory
  • Enhanced SDRAM Enhanced SDRAM, ESDRAM
  • synchronous connection dynamic random access memory Synchrobus RAM, SLDRAM
  • Direct Rambus RAM Direct Rambus RAM
  • the signal conversion circuit 220 may be configured to convert a signal transmitted between the modem 210 and the radio frequency transceiver.
  • the signal conversion circuit 220 may transform a signal output by the modem 210 to adapt to a radio frequency transceiver, and may transform a signal output by the radio frequency transceiver to adapt to the modem 210.
  • the signal conversion circuit 220 may include a digital-to-analog converter (DAC) (for example, as shown in FIG. 3 and FIG. 4, DAC 220 a), and is configured to process a digital signal output by the modem 210.
  • Digital-to-analog conversion to output to a radio frequency transceiver and may include an analog to digital converter (ADC) (for example, ADC220b as shown in Figures 3 and 4) for analog signals output by the radio frequency transceiver
  • ADC analog to digital converter
  • An analog-to-digital conversion is performed to output to the modem 210.
  • the signal conversion circuit 210 may include a digital radio frequency (DigRF) circuit.
  • the DigRF can realize the transmission of data signals between the modem 210 and the radio frequency transceiver.
  • the radio frequency transceiver can have analog-to-digital conversion and digital-to-analog conversion functions to convert the received data.
  • the obtained digital signal is converted into an analog signal and output to a radio frequency front end, or the analog signal from the radio frequency front end is converted into a digital signal for output to the modem 210.
  • the first control circuit 230 may include a signal conversion circuit 220 (for example, including a DAC 220a and an ADC 220b as shown in FIGS. 3 and 4, and a DigRF as shown in FIG. 8, for example. 220c) connected switches (for example, switches 232a and 232b as shown in FIGS. 3, 4 and 8), at least two modems 210 are respectively connected to the signal conversion circuit 220 through the switches in a time-sharing manner; the processor 250 is used to control the switches Connection to at least two modems 210.
  • a signal conversion circuit 220 for example, including a DAC 220a and an ADC 220b as shown in FIGS. 3 and 4, and a DigRF as shown in FIG. 8, for example. 220c
  • switches for example, switches 232a and 232b as shown in FIGS. 3, 4 and 8
  • the switch includes a first switch and a second switch (for example, switches 232b and 232a as shown in FIGS. 3 and 4); wherein the at least two modems 210 are respectively Time-sharing connection to the ADC through a first switch (for example, switch 232b shown in FIGS. 3 and 4); and the at least two modems 210 through a second switch (for example, switch 232a shown in FIGS. 3 and 4), respectively ) Time-shared connection with DAC.
  • a first switch for example, switch 232b shown in FIGS. 3 and 4
  • a second switch for example, switch 232a shown in FIGS. 3 and 4
  • the first switch and the second switch may be implemented by one switch, or may be implemented by multiple switches.
  • the switch mentioned in the embodiment of the present application may include a multiplexer (MUX) and a demultiplexer (DEMUX).
  • MUX multiplexer
  • DEMUX demultiplexer
  • the switch 210a (MUX) can be used to connect the modem 210a with the DAC 220a
  • the switch 210b (DEMUX) can be used to connect the modem 210a.
  • the circuit implementation of the MUX may be as shown in FIG. 5.
  • the MUX may include an AND gate 232 a-1, an AND gate 232 a-2, an inverter 232 a-3, and an OR gate 232 a-4.
  • a and c respectively input the n-th DAC signal output by the modems of different communication modes to the DAC.
  • bit width of the DAC is 12 bits, n is 0 to 11;
  • b is the mode selection signal output by the register, indicating The selected mode (that is, the selected modem);
  • d is the digital interface of the DAC digital-to-analog conversion circuit.
  • bit width of the DAC is 12 bits, n is also from 0 to 11.
  • the bit width of the DAC can also be other numbers of bits.
  • the circuit implementation of the DEMUX may be as shown in FIG. 6.
  • the DEMUX may include an AND gate 232b-1, an AND gate 232b-2, and an inverter 232b-3.
  • a is a digital interface of the analog-to-digital conversion circuit
  • b is a mode selection signal, which indicates the selected mode (that is, the selected adjustment demodulator);
  • c and d are inputs to modems corresponding to different modes, respectively.
  • the bit width of the ADC can also be other numbers of bits.
  • the bit widths of the ADC and the DAC may be different, and may be determined according to the receiving and transmitting communication performance indicators, respectively.
  • switches mentioned in the embodiments of the present application may not be MUX and DEMUX.
  • modem 210a and modem 210b can correspond to different switches.
  • ADC220b and DAC220a need to be connected to modem 210a, the switches between modem 210b and ADC220b and DAC220a can be opened, and modems 210a and ADC220b can be closed. And DAC220a.
  • the switch between the modem 210a and the ADC 220b and the DAC 220a may be opened, and the switch between the modem 210b and the ADC 220b and the DAC 220a may be closed.
  • the same switch can be used for the path from the radio frequency transceiver to the modem 210 and the path from the modem 210 to the radio frequency transceiver.
  • the radio frequency transceiver may be independent of the signal processing circuit 200.
  • the modem 210a and the modem 210b may be connected to the DigRF 220c in a time-sharing manner through a switch 232c.
  • the switch when the signal conversion circuit 210 includes DigRF220c, the switch may include a switch 232a (may be MUX) and a switch 232b (may be DEMUX).
  • the switch 232a or the switch 232b is respectively connected to the DigRF220c, and the DigRF220c may It is connected to a radio frequency transceiver 300 independent of the signal processing circuit 200.
  • FIGS. 3 and 4 For the description of other parts of the circuit in FIG. 8, reference may be made to the description for FIGS. 3 and 4. For brevity, details are not described herein again.
  • the DigRF used to process signals from the modem to the radio frequency transceiver and the DigRF used to process signals from the radio frequency transceiver to the modem may be the same DigRF, or they may be independent DigRFs.
  • the first control circuit 210 includes at least one first control register (for example, control registers 234a and 234b shown in FIGS. 3, 4 and 8).
  • the processor 250 may control the time-sharing connection of the at least two modems 210 and the signal conversion circuit 220 through the at least one first control register.
  • the processor 250 is configured to control the connection of the switch to at least two modems 210 (for example, modems 210a and 210b shown in FIGS. 3, 4 and 8) through at least one first control register, so as to control the at least one The two modems 210 are time-shared with the signal conversion circuit 210.
  • the first control circuit includes a control register 234a and a control register 234b
  • the processor 250 may use the register 234a to control the switch 232a, and use the control register 234b to control the switch 232b.
  • first control register for example, control registers 234a and 234b shown in FIGS. 3, 4 and 8) and the processor 250 may be separate devices, or the first control register may also be a processor A part of 250 is not specifically limited in this embodiment of the present application.
  • the radio frequency transceiver 300 may be independent of the signal processing circuit 200. Specifically, it may be understood that the radio frequency chip and the baseband chip are independent. .
  • the radio frequency transceiver 300 when the radio frequency transceiver 300 is independent of the baseband chip, the radio frequency transceiver 300 can be controlled by the second control circuit 240.
  • the second control circuit 240 may be a serial peripheral Interface (SPI) 240a, of course, can also be other control interfaces, for example, it can be a mobile industry processor interface (Mobile Industry Processor Interface, MIPI) radio frequency front end (Radio Frequency Front Front End (RFFE) interface or single wire interface, this application The embodiment does not specifically limit this.
  • SPI serial peripheral Interface
  • MIPI Mobile Industry Processor Interface
  • RFFE Radio Frequency Front Front End
  • the signal conversion circuit 220 may include DigRF, or include an ADC and a DAC.
  • the signal conversion circuit 220 (for example, the ADC 220b and DAC 220a shown in FIG. 3 or the DigRF circuit shown in FIG. 8) can pass through the radio frequency transceiver 300. Pin circuit connection.
  • the data interface between the radio frequency transceiver 300 and the signal processing circuit 200 may also be other interfaces than DAC and ADC, or DigRF.
  • the radio frequency transceiver 300 may be connected to the radio frequency front end 400, and the radio frequency front end 400 may amplify the signal output by the radio frequency transceiver 300 and output it to the receiving end through an antenna.
  • the signal processing circuit 200 further includes a radio frequency transceiver 270.
  • the radio frequency transceiver 270 may be integrated in the signal processing circuit 200, and no external radio frequency chip is required.
  • the internal resources of the signal processing circuit 200 may be time-multiplexed.
  • the processor, memory, signal conversion circuit, and radio frequency may be multiplexed. Transceivers, etc., can thereby further reduce the number of components of the signal processing circuit, reduce the cost of the signal processing circuit, and reduce the PCB space occupied by the signal processing circuit.
  • the radio frequency transceiver 270 in the signal processing circuit 200 may be connected to the radio frequency front end 400, and the radio frequency front end 400 may amplify the signal output by the radio frequency transceiver 270 and output it to the receiving end through an antenna. .
  • the second control circuit 240 may be a second control register 240b, that is, the processor 250 or the modem 210 may control radio frequency transmission and reception through the second control register 240b. ⁇ 270 ⁇ 270.
  • the second control register 240b may be a device independent of the processor 250, or may be a part of the processor 250, which is not specifically limited in the embodiment of the present application.
  • the signal conversion circuit 220 may include an ADC and a DAC (such as the ADC 220b and the DAC 220a shown in FIG. 4).
  • At least two modems 210 may be implemented by using the same semiconductor process.
  • control registers for example, the control registers 234a, 234b, and 240b as shown in FIGS. Interconnect bus communication.
  • the processor and memory inside the signal processing circuit can be shared in time sharing by the corresponding communication mode of the modem, and there is no need to set the processor and memory resources separately.
  • the interface between the interconnect bus and the bus device may be in accordance with the Advanced Microcontroller Bus Architecture (AMBA) standard or other standards or private
  • AMBA Advanced Microcontroller Bus Architecture
  • the interface of the protocol; the bus structure can support a crossbar matrix (Crossbar) bus structure, a network bus structure, or other structures.
  • Bus devices can communicate through the bus.
  • the processor can read and write memory, control registers, and SPI through the bus.
  • signal processing circuit 200 or switch shown in FIG. 2-8 is only a schematic diagram, and the signal processing circuit or switch in the embodiment of the present application should not be particularly limited.
  • FIGS. 2-4, 7 and 8 For example, although two modems are shown in FIGS. 2-4, 7 and 8, the embodiments of the present application are not limited thereto, and the embodiments of the present application may be used in a scenario of three or more modems.
  • the signal processing circuits shown in FIGS. 2-4, 7 and 8 may further include other devices, for example, channel encoders, etc., which may be specifically used to perform channel coding and encryption of service information and control information, and Output to modem.
  • channel encoders etc., which may be specifically used to perform channel coding and encryption of service information and control information, and Output to modem.
  • the signal processing circuit 200 in the embodiment of the present application may include other numbers of switches, for example, may include one switch.
  • the MUX and DEMUX mentioned in the embodiments of the present application may be implemented by a switch.
  • the SPI or the second control register in Figures 3, 4, 7, and 8 can also be connected to a modem and controlled by the modem.
  • At least two modems 210 included in the signal processing circuit 200 may be different modems.
  • it can also be the same modem, which is not specifically limited in this embodiment of the present application.
  • different modems may be different communication modes applicable to the modems, different modulation and demodulation methods used, or different internal structures.
  • different communication modes may be understood as different communication protocols (or communication standards).
  • the communication protocol includes but not limited to 5G (5 th Generation) communication protocols, Long Term Evolution (Long Term Evolution, LTE) communications protocol, 3G (3 rd Generation) communication protocol, IEEE802.11 protocol, the non-IEEE802.11 D2D communication protocol.
  • the at least two modems may use different communication protocols among these communication protocols.
  • the signal processing circuit 200 may include two modems, and the communication modes corresponding to the two modems are a communication mode using the IEEE802.11 communication protocol and a communication mode using the D2D communication protocol.
  • the IEEE802.11 communication protocol can be further subdivided into IEEE802.11a, IEEE802.11b, IEEE802.11g, IEEE802.11n, IEEE802.11ac, IEEE802.11ax, and so on.
  • the LTE communication protocol can be subdivided into multiple versions. At this time, different modems can use a more subdivided different communication protocol or communication standard.
  • the frequency bands required for the at least two communication modes are the same frequency band or the frequency band difference is smaller than the first predetermined value.
  • the first predetermined value may be preset in the memory 260.
  • a difference in transmit power between at least two communication modes is smaller than a second predetermined value.
  • the second predetermined value may be preset in the memory 260.
  • At least two communication modes comply with the same national or regional radio management specifications.
  • the communication modes mentioned in the embodiments of the present application may include an IEEE 802.11 (for example, 802.11a / b / g / n / ac / ax) communication mode in an unlicensed (exempt) frequency band and a non-IEEE 802.11 standard using the same frequency band.
  • IEEE 802.11 for example, 802.11a / b / g / n / ac / ax
  • D2D Device to Device
  • the IEEE 802.11 communication mode and the D2D communication mode use the same License exempt frequency band, comply with the same national or regional radio management specifications, and have close requirements on radio frequency chips. Therefore, they can be implemented with the same radio frequency chip or on a baseband chip. Integrated RF circuit to achieve.
  • the processor 250 may determine the first modem 210 from at least two modems 220, where the first modem 210 corresponds to a first communication mode, and the first communication mode is a communication mode to be adopted; 210 is connected to the signal conversion circuit 220; and based on the first communication mode, the radio frequency transceiver is controlled by the second control circuit 240, or the first modem 210 can control the radio frequency transceiver by the second control circuit 240.
  • the processor 250 receives the first message sent by the remote control device in the second communication mode, and the first message indicates that the communication mode to be adopted is the first communication mode; through the first message, It is determined that the communication mode to be adopted is the first communication mode.
  • the processor 250 is in the second communication mode, which means that the modem 210 corresponding to the second communication mode is in a communication state with the signal conversion circuit 220.
  • the processor 250 may send a second message to the remote control device to indicate that it is about to be Switching from the second communication mode to the first communication mode.
  • the processor 250 may start a timer, and when the timer expires, if the third message that refuses to switch the communication mode is not received, the first control circuit 230 is used to disconnect the signal.
  • the processor 250 may start the timer at a time after the second message is sent.
  • the processor 250 in the embodiment of the present application may also start a timer at another time, which is not specifically limited in this application.
  • the processor 250 after switching the communication mode, completes synchronization and establishes a wireless communication connection based on the first communication mode.
  • the signal processing circuit is used in a drone.
  • the drone remote control device may include a device supporting a non-IEEE 802.11 D2D communication mode, such as a remote control, and a device supporting an IEEE 802.11 communication mode, such as a mobile phone.
  • the drone needs to be connected with two types of remote control devices Communication, but generally do not need to communicate with two types of remote control devices at the same time, and the drone has a high volume requirement, so the signal processing circuit in the embodiment of the present application can be used in the drone, which can reduce the drone
  • the PCB board takes up space and does not reduce the drone's communication performance.
  • the user is using a mobile phone to communicate with the drone through the IEEE802.11 communication mode.
  • the user issues a communication mode switching command through the APP on the mobile phone side and transmits it to the drone through the current wireless link.
  • the drone parses the received handover command and issues a handover response over the current wireless link.
  • the APP on the user's mobile phone terminal receives the response, and the APP on the mobile phone terminal informs the user to start switching.
  • the IEEE802.11 communication connection will be closed.
  • the user can start the D2D remote controller and wait for the drone to establish a link with the remote controller.
  • a timer can be started.
  • the communication mode switching process is entered, the current IEEE802.11 communication link is closed, the D2D communication mode is started, that is, the modem corresponding to the IEEE802.11 communication mode is cut off Connection to a signal conversion circuit, and connection of a modem corresponding to the D2D communication mode with the signal conversion circuit.
  • the drone and remote control use the D2D communication mode, complete synchronization and establish a wireless communication link, and start communication.
  • the processor may further determine that the communication mode to be adopted is the first communication mode based on a user setting.
  • a communication mode switch can be set on the drone, and the user should set the switch before using the drone.
  • the UAV signal processing circuit When the UAV signal processing circuit is running, it automatically determines the switch status and sets the corresponding communication mode, that is, the connection between the corresponding modem and the signal conversion circuit.
  • the UAV can be a small UAV.
  • the UAV may be a rotorcraft, for example, a multi-rotor aircraft propelled by multiple propulsion devices through air.
  • the embodiments of the present application are not limited to this, and the UAV may also be another type of UAV or Removable device.
  • the signal processing circuit in the embodiment of the present application may also be used in other machines or devices, for example, it may be used in a smart home or a mobile phone.
  • An embodiment of the present application further provides a chip, which may include the signal processing device 200 in the foregoing embodiment.
  • An embodiment of the present application further provides a communication device, and the communication device may include the signal processing circuit 200 in the foregoing embodiment.
  • the communication device 600 may include a signal processing circuit 610, a radio frequency transceiver 620, and a radio frequency front end 630.
  • the radio frequency front end 630 is connected to the radio frequency transceiver 620; the radio frequency transceiver 620 is connected to the signal processing circuit 610. At this time, the radio frequency transceiver 620 and the radio frequency front end 630 are independent of the signal processing circuit 610.
  • the communication device 700 may include a signal processing circuit 710 and a radio frequency front end 720.
  • the signal processing circuit 710 includes a radio frequency transceiver 712; the radio frequency front end 720 is connected to the radio frequency transceiver 712 included in the signal processing circuit 710.
  • the communication device 600 or 700 further includes a setting section; the setting section is used to set a communication mode to be adopted.
  • the setting unit may specifically be a communication mode switch as described above, and details are not described herein again.
  • the communication device 600 or 700 may correspond to the flight controller 161 in FIG. 1, and is configured to implement functions of the flight controller 161.
  • the communication device in the embodiment of the present application may also be a terminal or a network device, which is not specifically limited in the embodiment of the present application.
  • An embodiment of the present application provides a drone, which may include a signal processing circuit 200 or include the communication device 600 or 700.
  • the specific structure of the drone may be UAV 110 in FIG. 1, and details are not described herein again.
  • FIG. 12 is a schematic flowchart of a communication method processing method 800 according to an embodiment of the present application.
  • the method 800 may be used for a signal processing circuit, which includes: at least two modems, a signal conversion circuit, a first control circuit, a second control circuit, and a processor; wherein different modems of the at least two modems are used for Different communication modes and time-sharing are connected to the signal conversion circuit; the signal conversion circuit is connected to the radio frequency transceiver and is used to transform the signal transmitted between the radio frequency transceiver and the modem.
  • the signal processing circuit may be specifically shown in the signal processing circuit 200 in FIGS. 2-4, FIG. 7 and FIG. 8. For brevity, details are not described herein again.
  • the method 800 includes at least part of the following.
  • a first modem is determined from at least two modems, the first modem corresponds to a first communication mode, and the first communication mode is a communication mode to be adopted;
  • the processor connects the first modem to the signal conversion circuit using the first control circuit;
  • the processor controls the radio frequency transceiver using the second control circuit based on the first communication mode, or the first modem controls the radio frequency transceiver using the second control circuit.
  • the processor in the second communication mode, receives a first message sent by the remote control device, and the first message indicates that the communication mode to be adopted is the first communication mode; through the first message, processing The processor determines that the communication mode to be adopted is the first communication mode.
  • the processor when the processor determines that it is necessary to switch from the second communication mode to the first communication mode, the processor sends a second message to the remote control device in the second communication mode to indicate that the second message is to be switched from the second communication mode.
  • the communication mode is switched to the first communication mode.
  • a timer is started; when the timer expires, if the third message that refuses to switch the communication mode is not received, the first control circuit is used to disconnect the signal conversion circuit from the second The connection of the second modem corresponding to the communication mode; when the timer expires, if the third message that refuses to switch the communication mode is not received, the signal conversion circuit is connected to the first modem.
  • the processor determines that the communication mode to be adopted is the first communication mode.
  • the processor uses the first control circuit to control at least two modems to be time-shared with the signal conversion circuit, and the processor or modem uses the second control circuit to control the radio frequency transceiver, so that at least two modems can be implemented
  • Internal resources of the signal processing circuit are time-multiplexed during operation, for example, a processor, a signal conversion circuit, and a second control circuit for controlling a radio frequency transceiver can be time-multiplexed, thereby reducing the number of signals used in the signal processing circuit.
  • the device that communicates with the outside world can reduce the cost of the signal processing circuit, and can also make the signal processing circuit occupy less PCB space.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Transceivers (AREA)

Abstract

L'invention concerne un circuit de traitement de signal, un dispositif de communication, un véhicule aérien sans pilote et un procédé de traitement d'un mode de communication. Le circuit de traitement de signal comprend : au moins deux modems, un circuit de conversion de signal, un premier circuit de commande, un second circuit de commande et un processeur. Lesdits modems sont connectés au circuit de conversion de signal à différentes divisions temporelles. Le circuit de conversion de signal est connecté à un émetteur-récepteur RF et est utilisé pour convertir un signal envoyé entre l'émetteur-récepteur RF et les modems. Le processeur est utilisé pour commander auxdits modems de connecter le circuit de conversion de signal à différentes divisions temporelles au moyen du premier circuit de commande, et pour commander l'émetteur-récepteur RF à l'aide du second circuit de commande. Des modes de réalisation de la présente invention peuvent réduire un espace PCB occupé par un circuit de traitement de signal, et réduire les coûts du circuit de traitement de signal.
PCT/CN2018/088875 2018-05-29 2018-05-29 Circuit et dispositif de traitement de signal et procédé de traitement de mode de communication Ceased WO2019227311A1 (fr)

Priority Applications (2)

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PCT/CN2018/088875 WO2019227311A1 (fr) 2018-05-29 2018-05-29 Circuit et dispositif de traitement de signal et procédé de traitement de mode de communication
CN201880012517.9A CN110337817B (zh) 2018-05-29 2018-05-29 信号处理电路和设备，以及通信模式的处理方法

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112394649A (zh) * 2020-11-17 2021-02-23 中国人民解放军63892部队 一种基于分时复用的群无人机内通信行为控制平台

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114400658A (zh) * 2021-12-30 2022-04-26 深圳市恒运昌真空技术有限公司 射频电源及其分时多个负载运行的控制方法、装置和设备
CN119298928A (zh) * 2024-08-29 2025-01-10 上海荣耀智慧科技开发有限公司 一种通信系统及电子设备

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1645758A (zh) * 2004-01-16 2005-07-27 Sk电信技术有限公司 具有模式转换电路的双模式移动终端
CN101262254A (zh) * 2007-02-16 2008-09-10 诺基亚公司 在多无线接入设备中管理低功率无线介质
CN106454692A (zh) * 2015-08-12 2017-02-22 卢迪 双模无线通信芯片、双模无线通信设备和方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7778226B2 (en) * 2006-03-30 2010-08-17 Intel Corporation Device, system and method of coordination among multiple transceivers
US7844242B2 (en) * 2007-03-14 2010-11-30 Broadcom Corporation Wireless communication device with programmable antenna system
US20110249603A1 (en) * 2009-06-16 2011-10-13 Qualcomm Incorporated Apparatus and method for multiple wireless service coexistence
CN105515603B (zh) * 2015-11-26 2018-04-24 小米科技有限责任公司 无线通信装置、终端设备及无线通信控制方法
CN113099501A (zh) * 2017-01-17 2021-07-09 深圳市大疆创新科技有限公司 无人机、遥控器及其控制方法、遥控系统

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1645758A (zh) * 2004-01-16 2005-07-27 Sk电信技术有限公司 具有模式转换电路的双模式移动终端
CN101262254A (zh) * 2007-02-16 2008-09-10 诺基亚公司 在多无线接入设备中管理低功率无线介质
CN106454692A (zh) * 2015-08-12 2017-02-22 卢迪 双模无线通信芯片、双模无线通信设备和方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112394649A (zh) * 2020-11-17 2021-02-23 中国人民解放军63892部队 一种基于分时复用的群无人机内通信行为控制平台
CN112394649B (zh) * 2020-11-17 2022-08-30 中国人民解放军63892部队 一种基于分时复用的群无人机内通信行为控制平台

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