CN112034747A - WiFi-based portable unmanned aerial vehicle test system - Google Patents

WiFi-based portable unmanned aerial vehicle test system Download PDF

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Publication number
CN112034747A
CN112034747A CN202010762820.XA CN202010762820A CN112034747A CN 112034747 A CN112034747 A CN 112034747A CN 202010762820 A CN202010762820 A CN 202010762820A CN 112034747 A CN112034747 A CN 112034747A
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China
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module
wifi
data
aerial vehicle
unmanned aerial
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CN202010762820.XA
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Chinese (zh)
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刘瑞瑞
孙进
甘发金
朱煜坤
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Rainbow UAV Technology Co Ltd
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Rainbow UAV Technology Co Ltd
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Priority to CN202010762820.XA priority Critical patent/CN112034747A/en
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Pending legal-status Critical Current

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    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00Programme-control systems
    • G05B19/02Programme-control systems electric
    • G05B19/04Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/042Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
    • G05B19/0423Input/output
    • GPHYSICS
    • G08SIGNALLING
    • G08CTRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00Program-control systems
    • G05B2219/20Pc systems
    • G05B2219/24Pc safety
    • G05B2219/24036Test signal generated by microprocessor, for all I-O tests

Abstract

The utility model provides a portable unmanned aerial vehicle test system based on wiFi, mainly include the test system body, unmanned aerial vehicle and ground terminal equipment, specifically include communication module, wiFi core module, data storage module, the state display module, the clock module, power module, for the long-distance data transmission link of traditional unmanned aerial vehicle, adopt the test system that uses wiFi core module as the main to install and realize closely telemetering measurement data and remote control instruction wireless transmission on unmanned aerial vehicle, power consumption and cost have been reduced, be suitable for the durability simultaneously experimental, it is with high costs to have solved traditional test system, prepare too numerous and diverse problem.

Description

WiFi-based portable unmanned aerial vehicle test system
Technical Field
The invention relates to a WiFi-based portable unmanned aerial vehicle test system, and belongs to the field of automatic control.
Background
At present, a medium-large unmanned aerial vehicle carries out data interaction with a ground control station through a wireless data transmission system in the flying process, and the wireless data transmission system can cover a transmission range within 0-300km according to different used wave bands and different power. However, the conventional wireless data transmission system and the ground control station generally have the disadvantages of large volume, heavy weight and the like, and the ground antenna combination and the terminal equipment of most of the conventional systems are carried by a ground movable vehicle and need an external generator or a comprehensive power supply system to work normally.
For the conventional operations that the unmanned aerial vehicle can be powered on and debugged, the undercarriage is tested, the oil adding and discharging operation, the engine monitoring and the like can be completed under short-distance communication transmission, the preparation work of a ground wireless link transceiver station is complex, the starting time is long, a special power supply or generator equipment is required, a plurality of professional operators and equipment are required to be equipped for normal work, a lot of inconvenience is caused during use, and the time and the economic cost of the conventional test are overhigh. Therefore, a small test system with a short-range wireless communication function, which is easy and fast to operate, is urgently needed to complete conventional tests.
Disclosure of Invention
The technical problem solved by the invention is as follows: to among the prior art at present, when carrying out different tests to unmanned aerial vehicle, traditional test preparation is too numerous and diverse problem, has provided a portable unmanned aerial vehicle test system based on wiFi.
The technical scheme for solving the technical problems is as follows:
the utility model provides a portable unmanned aerial vehicle test system based on wiFi, includes communication module, wiFi core module, data storage module, state display module, clock module, power module, wherein:
a communication module: performing data interaction with the unmanned aerial vehicle, wherein the interface type comprises an RS422/RS232/CAN bus interface;
a WiFi core module: operating a WiFi protocol stack and operating a corresponding user program according to user requirements; the WiFi wireless remote control instruction sent by the ground terminal equipment is received through an antenna, the instruction is decoded and then sent to a communication module through a TTL level signal, and the decoded instruction is converted into an RS422/RS232/CAN format through the communication module and sent to an unmanned aerial vehicle debugging interface;
the telemetering data output by the unmanned aerial vehicle debugging interface is converted into TTL level signals through the communication module, received by the WiFi core module, packaged and fed back to the ground terminal equipment through the WiFi antenna, and the data downlink function is realized;
after power-on work, receiving time reference information sent by a real-time clock module, and sending a query instruction to the real-time clock module at regular time to acquire feedback time information;
the method comprises the steps of obtaining a remote control command sent by ground terminal equipment and telemetering data sent by an unmanned aerial vehicle, packaging the remote control command and the telemetering data with time information fed back by a real-time clock module, and storing the remote control command and the telemetering data in a storage module in real time to realize data storage; the state display module is refreshed periodically, and the working state of the equipment is displayed in real time;
a data storage module: storing the data acquired by the communication module, wherein the data to be stored comprises configuration information and communication data;
a state display module: displaying the working state parameters of the WiFi core module in real time;
a clock module: providing time reference information for unmanned plane testing;
a power supply module: power is supplied to other modules;
the communication module comprises an isolation RS422/RS232 circuit and an isolation CAN bus circuit, the isolation RS422/RS232 circuit consists of a MAX3160 chip, a TJA1050 bus chip, a 6N137 isolation chip and a peripheral circuit thereof, the isolation RS422/RS232 circuit receives telemetering data sent to test equipment by the unmanned aerial vehicle, converts the telemetering data into TTL level signals through the MAX3160 chip and inputs the TTL level signals to the WiFi core module, and the telemetering data is packaged and then sent to ground terminal equipment through a WiFi antenna; the WiFi core module receives a remote control instruction of the terminal equipment through an antenna, outputs a TTL level signal after analysis, converts the TTL level signal into an RS422/RS232 signal through a communication module, and sends the RS422/RS232 signal to an unmanned aerial vehicle debugging interface to realize a remote control function;
the CAN bus circuit is connected with an airborne debugging CAN bus interface of the unmanned aerial vehicle through a TJA1050 bus interface chip to realize CAN bus data communication.
The data storage module comprises a configuration parameter storage circuit and a data storage circuit, the configuration parameter storage circuit stores configuration parameters required by testing, the data storage circuit stores remote control and telemetry data of unmanned aerial vehicle testing, and the WiFi core module is connected with the configuration parameter storage circuit through an IIC bus and connected with the data storage circuit through an SDIO interface.
The state display module is connected with the WiFi core module through the SPI, and display data of the state display module are refreshed by the WiFi core module at regular time and are sent to the display module through the SPI so as to realize man-machine interaction.
The real-time clock module is a time source of the WiFi core module, and is used for stamping a time stamp on remote control instructions sent by the ground terminal equipment and telemetering data sent by the unmanned aerial vehicle and storing the time stamp. After the power is on, time reference information is output to the WiFi core module, meanwhile, a query instruction sent by the WiFi core module at regular time is received through the two-wire serial data interface, and time information is fed back to the WiFi core module according to the query instruction.
The power module is connected with an external input power supply, and outputs two groups of isolated power supplies after DC/DC conversion is carried out on the external input power supply and respectively supplies power to other modules.
The WiFi core module comprises a Lexin ESP32-WROVER core module, a USB debugging interface, an antenna and peripheral circuits thereof. The WiFi protocol stack and the application program are integrated in a dual-core ARM processor of the Lexin ESP32-WROVER module.
The parameter storage circuit comprises an AT24C02 chip and a peripheral circuit thereof, and the data storage circuit comprises an SD card, a card slot and a peripheral resistor; the state display module comprises an OLED screen and a peripheral circuit; the real-time clock module comprises a DS1302Z chip and peripheral circuits thereof.
The power supply module comprises two WRB2405-3W external input power supplies and an AMS-1117 chip, wherein the external input power supplies are converted into two groups of independent 5V power supplies through the WRB2405-3W, and one group of independent 5V power supplies is converted into a 3.3V power supply through the AMS-1117 chip to supply power for the WiFi core module, the data storage module and the display module; and the other group of 5V power supplies power for the internal circuit of the isolated communication module, so that the electrical isolation of the communication interface is realized.
Compared with the prior art, the invention has the advantages that:
(1) compared with the traditional unmanned aerial vehicle remote data transmission link, the portable unmanned aerial vehicle test system based on the WiFi provided by the invention adopts the test system mainly based on the WiFi core module to be installed on the unmanned aerial vehicle, realizes the transmission of test remote control instructions and remote measurement data, has lower power consumption and cost, can realize the test and control of the unmanned aerial vehicle through a ground terminal, has small radiation power compared with the traditional unmanned aerial vehicle remote data transmission link, reduces the radiation of the link system to ground operators, and is more suitable for long-time debugging, maintenance or equipment durability test;
(2) the WiFi core module adopted by the invention integrates the user program and the WiFi protocol stack into one processor, and compared with the traditional processor + WiFi module structure, the power consumption and hardware cost of the device are effectively reduced; meanwhile, data delay caused by serial port communication between the processor and the WiFi module is avoided, and data throughput and real-time performance are improved; in addition, the WiFi protocol stack and the application program are integrated by the processor, so that compared with the traditional scheme, the flexibility and the expansibility of the application program are greatly improved;
(3) the invention packs the remote control and remote measurement data of the unmanned aerial vehicle and the real-time clock information and stores the data in a text format so as to facilitate the subsequent data query processing and fault analysis.
Drawings
Fig. 1 is a schematic structural diagram of an unmanned aerial vehicle test system provided by the invention;
FIG. 2 is a flow chart of the test system of the UAV provided by the present invention;
FIG. 3 is a schematic diagram of a communication module provided by the present invention;
FIG. 4 is a schematic diagram of a data storage module, a real-time clock module and a status display module according to the present invention;
FIG. 5 is a schematic diagram of a power module provided in the present invention;
FIG. 6 is a schematic diagram of a WiFi core module provided in the present invention;
Detailed Description
The utility model provides a portable unmanned aerial vehicle test system based on wiFi mainly includes the three, is test system body, unmanned aerial vehicle and ground terminal equipment respectively, carries out the transmission of instruction, data through ground terminal equipment, utilizes test system to realize the test to unmanned aerial vehicle, specifically does:
as shown in fig. 1, the drone testing system includes: communication module, wiFi core module, data storage module, state display module, clock module, power module, wherein:
the communication module is used for data interaction with the unmanned aerial vehicle, and the interface type comprises an RS422/RS232/CAN bus interface;
WiFi core module is as unmanned aerial vehicle test system's major module, and the main function is as follows:
operating a WiFi protocol stack, operating a corresponding user program according to user requirements, receiving a WiFi wireless remote control instruction sent by ground terminal equipment through an antenna, decoding the instruction, sending the decoded instruction to a communication module in a TTL level signal, converting the decoded instruction into an RS422/RS232/CAN format through the communication module, and sending the converted instruction to an unmanned aerial vehicle debugging interface;
converting the telemetering data output by the unmanned aerial vehicle debugging interface into TTL level signals through a communication module, receiving the TTL level signals by a WiFi core module, packaging the telemetering data, and feeding the telemetering data back to ground terminal equipment through a WiFi antenna to realize a data downlink function;
after power-on work, receiving time reference information sent by a real-time clock module, and sending a query instruction to the real-time clock module at regular time to acquire feedback time information;
the method comprises the steps of obtaining a remote control instruction sent by terminal equipment and telemetering data sent by an unmanned aerial vehicle, packaging the remote control instruction and the telemetering data with time information fed back by a real-time clock module, and storing the remote control instruction and the telemetering data in a storage module in real time to realize data storage; the state display module is refreshed periodically, and the working state of the equipment is displayed in real time;
the data storage module is used for storing data acquired by the communication module and mainly comprises two types of data, configuration information storage of equipment and communication data storage;
the state display module is used for displaying the working state of the test system in real time; the state display module is connected with the WiFi core module through an SPI interface, and display data of the state display module are refreshed by the WiFi core module at regular time and are sent to the display module through the SPI interface so as to realize human-computer interaction;
the real-time clock module provides time reference information for the test system and the unmanned aerial vehicle, and is convenient to output and store;
the power supply module supplies power to other modules.
The communication module comprises an isolation RS422/RS232 circuit and an isolation CAN bus circuit, wherein the isolation RS422/RS232 circuit consists of a MAX3160 chip, a TJA1050 bus chip, a 6N137 isolation chip and a peripheral circuit thereof, the isolation RS422/RS232 circuit receives telemetering data sent to test equipment by an unmanned aerial vehicle, converts the telemetering data into TTL level signals through the MAX3160 chip and inputs the TTL level signals to a WiFi core module, and packs the telemetering data and sends the packed telemetering data to ground terminal equipment through a WiFi antenna; the WiFi core module receives a remote control instruction of the terminal equipment through an antenna, outputs a TTL level signal after analysis, converts the TTL level signal into an RS422/RS232 signal through a communication module, and sends the RS422/RS232 signal to an unmanned aerial vehicle debugging interface to realize a remote control function;
the CAN bus circuit is connected with an airborne debugging CAN bus interface of the unmanned aerial vehicle through a TJA1050 bus interface chip to realize CAN bus data communication.
The data storage module comprises a configuration parameter storage circuit and a data storage circuit, the configuration parameter storage circuit stores configuration parameters of modules of the test system and ground terminal equipment, and also comprises some WiFi network parameters, the data storage circuit stores remote control and remote measurement data tested by the unmanned aerial vehicle, and the WiFi core module is connected with the configuration parameter storage circuit through an IIC bus and connected with the data storage circuit through an SDIO interface;
the parameter storage circuit comprises an AT24C02 chip and a peripheral circuit thereof, and the data storage circuit comprises an SD card, a card slot and a peripheral resistor; the state display module comprises an OLED screen and a peripheral circuit; the real-time clock module comprises a DS1302Z chip and peripheral circuits thereof.
The real-time clock module is a time source of the WiFi core module, and is used for stamping a time stamp on remote control instructions sent by the ground terminal equipment and telemetering data sent by the unmanned aerial vehicle and storing the time stamp. After the power is on, time reference information is output to the WiFi core module, meanwhile, a query instruction sent by the WiFi core module at regular time is received through the two-wire serial data interface, and time information is fed back to the WiFi core module according to the query instruction.
The power supply module is connected with an external input power supply, and outputs two groups of isolated power supplies after DC/DC conversion is carried out on the external input power supply and respectively supplies power to other modules, wherein the power supply module comprises two WRB2405-3W external input power supplies and an AMS-1117 chip, the external input power supplies are converted into two groups of independent 5V power supplies through the WRB2405-3W, and one group of independent 5V power supplies is converted into a 3.3V power supply through the AMS-1117 chip and supplies power to the WiFi core module, the data storage module and the display module; and the other group of 5V power supplies power for the internal circuit of the isolated communication module, so that the electrical isolation of the communication interface is realized.
The WiFi core module comprises a Lexin ESP32-WROVER core module, a USB debugging interface, an antenna and peripheral circuits thereof. The WiFi protocol stack and the application program are integrated in a dual-core ARM processor of the Lexin ESP32-WROVER module.
The following is further illustrated with reference to specific examples:
in this embodiment, the test system includes a communication module, a WiFi core module, a data storage module, a status display module, a clock module, and a power module, the test system is installed on the unmanned aerial vehicle, and performs control and data transmission through a ground terminal, the communication module includes an isolation RS422/RS232 circuit and an isolation CAN bus circuit, as shown in fig. 3, the isolation RS422/RS232 circuit is composed of a MAX3160 chip, a TJA1050 bus chip, a 6N137 isolation chip, and a peripheral circuit thereof, and the CAN bus circuit is connected with an onboard debugging CAN bus interface of the unmanned aerial vehicle through the TJA1050 bus interface chip to implement CAN bus data communication;
the data storage module comprises a configuration parameter storage circuit and a data storage circuit, the configuration parameter storage circuit stores configuration parameters required by testing, and the data storage circuit stores remote control and remote measurement data of the unmanned aerial vehicle testing; the real-time clock module is a time source of the WiFi core module, and is used for stamping a time stamp on remote control instructions sent by the ground terminal equipment and telemetering data sent by the unmanned aerial vehicle and storing the time stamp; the state display module comprises an OLED screen and a peripheral circuit, and the whole structure is shown in FIG. 4;
the power supply module comprises two WRB2405-3W external input power supplies and an AMS-1117 chip which respectively supply power to different modules, and the specific circuit structure is shown in FIG. 5;
the WiFi core module is used for receiving remote control instructions, transmitting TTL level signals, achieving time reference information inquiry and telemetering data processing waiting and comprises a Lexin ESP32-WROVER core module, an antenna and peripheral circuits thereof, a circuit structure is shown in figure 6, and a WiFi protocol stack and an application program are integrated in a dual-core ARM processor of the Lexin ESP32-WROVER module.
When unmanned aerial vehicle state test needs to be carried out, as shown in fig. 2, the specific flow is as follows:
after the WiFi core module is powered on, the Lexin ESP32-WROVER module is used for carrying out CPU power-on initialization, and tasks such as processor self-checking, file system loading, port initialization and the like are completed. After the self-checking of the processor is completed, the initialization setting is carried out on the peripheral equipment connected with the WiFi core module, the real-time clock module is initialized, the state display module is initialized, and the state of the storage circuit is checked. And then, the WiFi core module reads the network configuration parameters stored in the data storage module, initializes the WiFi function according to the configuration parameters, configures a connection password, the IP addresses and ports of the host and terminal equipment of each subsystem, and establishes SOCKET connection. The steps complete the system initialization function, then the processor creates an application task and starts to schedule the task in real time, and the application program comprises six tasks: the method comprises the steps of displaying and storing tasks, telemetering data receiving tasks, telemetering data distributing tasks, remote control instruction receiving tasks, remote control instruction packaging tasks and timing watchdog tasks, and therefore data up-down communication, storage and display of the unmanned aerial vehicle and terminal equipment are completed.
In the above-mentioned work flow, power module continues to supply power for test equipment, and the real-time clock module outputs time reference signal, and the real-time display equipment running state of state display module, remote control and telemetering measurement data are continuously preserved to data storage module, and the WiFi core module maintains network communication and data receiving and dispatching, and communication module continues to carry out the data interaction with unmanned aerial vehicle airborne equipment.
Those skilled in the art will appreciate that those matters not described in detail in the present specification are well known in the art.

Claims (9)

1. The utility model provides a portable unmanned aerial vehicle test system based on wiFi which characterized in that: including communication module, wiFi core module, data storage module, state display module, real-time clock module, power module, wherein:
a communication module: performing data interaction with the unmanned aerial vehicle, wherein the interface type comprises an RS422/RS232/CAN bus interface;
a WiFi core module: operating a WiFi protocol stack and operating a corresponding user program according to user requirements; the WiFi wireless remote control instruction sent by the ground terminal equipment is received through an antenna, the instruction is decoded and then sent to a communication module through a TTL level signal, and the decoded instruction is converted into an RS422/RS232/CAN format through the communication module and sent to an unmanned aerial vehicle debugging interface;
the telemetering data output by the unmanned aerial vehicle debugging interface is converted into TTL level signals through the communication module, received by the WiFi core module, packaged and fed back to the ground terminal equipment through the WiFi antenna, and the data downlink function is realized;
after power-on work, receiving time reference information sent by a real-time clock module, and sending a query instruction to the real-time clock module at regular time to acquire feedback time information;
the method comprises the steps of obtaining a remote control command sent by ground terminal equipment and telemetering data sent by an unmanned aerial vehicle, packaging the remote control command and the telemetering data with time information fed back by a real-time clock module, and storing the remote control command and the telemetering data in a storage module in real time to realize data storage; the state display module is refreshed periodically, and the working state of the equipment is displayed in real time;
a data storage module: storing data acquired by the communication module, wherein the stored data comprises configuration parameter information and communication data;
a state display module: displaying the working state parameters of the WiFi core module in real time;
a clock module: providing time reference information for an unmanned aerial vehicle test system;
a power supply module: and power is supplied to other modules.
2. The WiFi-based portable drone testing system of claim 1, characterized by: the communication module comprises an isolation RS422/RS232 circuit and an isolation CAN bus circuit, the isolation RS422/RS232 circuit consists of a MAX3160 chip, a TJA1050 bus chip, a 6N137 isolation chip and a peripheral circuit thereof, the isolation RS422/RS232 circuit receives telemetering data sent to test equipment by the unmanned aerial vehicle, converts the telemetering data into TTL level signals through the MAX3160 chip and inputs the TTL level signals to the WiFi core module, and the telemetering data is packaged and then sent to ground terminal equipment through a WiFi antenna; the WiFi core module receives a remote control instruction of the terminal equipment through an antenna, outputs a TTL level signal after analysis, converts the TTL level signal into an RS422/RS232 signal through a communication module, and sends the RS422/RS232 signal to an unmanned aerial vehicle debugging interface to realize a remote control function;
the CAN bus circuit is connected with an airborne debugging CAN bus interface of the unmanned aerial vehicle through a TJA1050 bus interface chip to realize CAN bus data communication.
3. The WiFi-based portable drone testing system of claim 1, characterized by: the data storage module comprises a configuration parameter storage circuit and a data storage circuit, the configuration parameter storage circuit stores configuration parameters required by testing, the data storage circuit stores remote control and telemetry data of unmanned aerial vehicle testing, and the WiFi core module is connected with the configuration parameter storage circuit through an IIC bus and connected with the data storage circuit through an SDIO interface.
4. The WiFi-based portable drone testing system of claim 1, characterized by: the state display module is connected with the WiFi core module through the SPI, and display data of the state display module are refreshed by the WiFi core module at regular time and are sent to the display module through the SPI so as to realize man-machine interaction.
5. The WiFi-based portable drone testing system of claim 1, characterized by: the real-time clock module is a time source of the WiFi core module, and is used for stamping a time stamp on remote control instructions sent by the ground terminal equipment and telemetering data sent by the unmanned aerial vehicle and storing the time stamp. After the power is on, time reference information is output to the WiFi core module, meanwhile, a query instruction sent by the WiFi core module at regular time is received through the two-wire serial data interface, and time information is fed back to the WiFi core module according to the query instruction.
6. The WiFi-based portable drone testing system of claim 1, characterized by: the power module is connected with an external input power supply, and outputs two groups of isolated power supplies after DC/DC conversion is carried out on the external input power supply and respectively supplies power to other modules.
7. The WiFi-based portable drone testing system of claim 1, characterized by: the WiFi core module comprises a Lexin ESP32-WROVER core module, a USB debugging interface, an antenna and peripheral circuits thereof. The WiFi protocol stack and the application program are integrated in a dual-core ARM processor of the Lexin ESP32-WROVER module.
8. The WiFi-based portable drone testing system of claim 1, characterized by: the parameter storage circuit comprises an AT24C02 chip and a peripheral circuit thereof, and the data storage circuit comprises an SD card, a card slot and a peripheral resistor; the state display module comprises an OLED screen and a peripheral circuit; the real-time clock module comprises a DS1302Z chip and peripheral circuits thereof.
9. The WiFi-based portable drone testing system of claim 1, characterized by: the power supply module comprises two WRB2405-3W external input power supplies and an AMS-1117 chip, wherein the external input power supplies are converted into two groups of independent 5V power supplies through the WRB2405-3W, and one group of independent 5V power supplies is converted into a 3.3V power supply through the AMS-1117 chip to supply power for the WiFi core module, the data storage module and the display module; and the other group of 5V power supplies power for the internal circuit of the isolated communication module, so that the electrical isolation of the communication interface is realized.
CN202010762820.XA 2020-07-31 2020-07-31 WiFi-based portable unmanned aerial vehicle test system Pending CN112034747A (en)

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