CN209962115U

CN209962115U - A quick sweep frequency collection system for unmanned aerial vehicle frequency hopping signal

Info

Publication number: CN209962115U
Application number: CN201921096756.5U
Authority: CN
Inventors: 谢跃雷; 蒋平; 吴娟; 吕国裴; 刘信; 易国顺; 蒋俊正; 欧阳缮; 廖桂生
Original assignee: Guilin University of Electronic Technology
Current assignee: Guilin University of Electronic Technology
Priority date: 2019-07-15
Filing date: 2019-07-15
Publication date: 2020-01-17
Anticipated expiration: 2029-07-15

Abstract

The utility model discloses a quick frequency sweep collection system for unmanned aerial vehicle frequency hopping signal, characterized by, including AD9361 chip and the data processing module and the SPI module of being connected with AD9361 chip, the SPI module is connected with serial port protocol module, register initialization module and 2.3G-2.5G, 5.7G-5.9G dual-band frequency sweep module, and wherein serial port protocol module still is connected with data processing module. The device is low in cost and can realize rapid frequency sweep acquisition of the frequency hopping signal of the unmanned aerial vehicle.

Description

A quick sweep frequency collection system for unmanned aerial vehicle frequency hopping signal

Technical Field

The utility model relates to a wireless communication, embedded technical field specifically are a quick sweep frequency collection system for unmanned aerial vehicle frequency hopping signal.

Background

Along with civilian unmanned aerial vehicle's popularization, both brought conveniently, also brought the safety problem simultaneously. Therefore, an apparatus is needed to detect and identify the drone, but the detection and identification are based on the premise of acquiring the signal of the drone. At present, the signal acquisition methods of unmanned aerial vehicles are different, and an AD9361 chip of an ADI company meets the requirement of 70MH unmanned aerial vehicle_Z-6GH_ZSignal acquisition, maximum bandwidth 56MH_ZHowever, the bandwidth of the frequency hopping signal of the unmanned aerial vehicle can reach 200MH at present_ZAnd the frequency hopping period belongs to the ms level, so the chip cannot meet the acquisition work. If select for use bigger bandwidth ADC, the cost is too high, so how to accomplish through this chip and gather the problem that current unmanned aerial vehicle signal acquisition equipment needs to be solved to the wide bandwidth signal fast, especially the increase progressively of current unmanned aerial vehicle quantity, and is more and more big to the acquisition equipment demand of lower cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the not enough of prior art, and provide a quick sweep frequency collection system for unmanned aerial vehicle frequency hopping signal. The device is low in cost and can realize rapid frequency sweep acquisition of the frequency hopping signal of the unmanned aerial vehicle.

Realize the utility model discloses the technical scheme of purpose is:

the utility model provides a quick sweep frequency collection system for unmanned aerial vehicle frequency hopping signal, is different from prior art, includes AD9361 chip and the data processing module and the SPI module of being connected with AD9361 chip, the SPI module is connected with serial port protocol module, register initialization module and 2.3G-2.5G, 5.7G-5.9G dual-band sweep frequency module, and wherein serial port protocol module still is connected with data processing module.

The data processing module comprises a differential conversion single-ended unit, a serial-parallel conversion unit and a first MUX selector which are sequentially connected, a receiving channel 1 unit and a receiving channel 2 unit which are connected in parallel are arranged between the serial-parallel conversion unit and the first MUX selector, the input end of the differential single-ended unit is connected with the output end of an AD9361 chip, the output end of the serial-parallel conversion unit is divided into two paths, one path of the differential single-ended unit is connected with the input end of the receiving channel 1 unit, the other path of the differential single-ended unit is connected with the input end of the receiving channel 2 unit, the input end of the first MUX unit in the data processing module is respectively connected with the output end of the receiving channel 1 unit and the output.

The serial port protocol module comprises a serial port protocol analysis unit and a serial port unit which are interconnected, the serial port unit is externally connected with a PC terminal, the serial port protocol module carries out protocol analysis on serial port input data and distributes commands to control each MUX selector module to select.

The SPI module comprises a first-stage state machine unit, a second-stage state machine unit, a third-stage state machine unit and a second MUX selector unit which are sequentially connected, the three state machines form the three-stage state machine to carry out SPI sequential circuit configuration, and the second MUX selector is used for inputting the configured register data.

The register initialization module comprises a polling unit, a checking unit and ROM0, ROM1, ROM2, ROM3, ROM4, ROM5, ROM6, ROM7 and ROM8 units which are respectively connected with the polling unit and the checking unit, wherein the checking unit is connected with a second MUX selector unit in the SPI module, and in the power-on process of the register initialization module, 9 ROM modules which store initialization register information are controlled to perform polling output and checking judgment output.

The 2.3G-2.5G and 5.7G-5.9G dual-frequency-band frequency sweeping module comprises a third MUX selector, a 2.3G-2.5G frequency sweeping unit and a 5.7G-5.9G frequency sweeping unit, wherein the 2.3G-2.5G frequency sweeping unit and the 5.7G-5.9G frequency sweeping unit are connected with the third MUX selector, the second MUX selector unit is connected with a serial port protocol analysis unit in an SPI module, the 2.3G-2.5G and 5.7G-5.9G dual-frequency-band frequency sweeping module is selectively output through the third MUX selector, frequency sweeping of the 2.3G-2.5G frequency band, frequency sweeping of the 5.7G-5.9G frequency band, the 2.3G-2.5G frequency sweeping unit and the 5.7G-5.9G frequency sweeping dual-frequency band are respectively realized, and a ROM (read only memory) which outputs frequency sweeping information in advance is provided with the ROM (read only memory).

The 2.3G-2.5G frequency sweeping unit comprises a first polling output unit, and a ROM2320M, a ROM2360M, a ROM2400M, a ROM2440M and a ROM2480M which are connected with the first polling output unit, wherein the first polling output unit is connected with a third MUX selector.

The 5.7G-5.9G frequency sweep unit comprises a second polling output unit and a ROM5720M, a ROM5760M, a ROM5800M, a ROM5740M and a ROM5880M which are connected with the second polling output unit, wherein the second polling output unit is connected with a third MUX selector.

In the power-on process, the whole device uses a pre-stored ROM unit and realizes the initialization configuration of an AD9361 chip through an SPI time sequence, then, a command is analyzed through a serial port, the ROM unit respectively provided with 2.3G-2.5G and 5.7G-5.9G frequency band signals can be controlled to carry out polling output, output data are written into the AD9361 chip through the SPI time sequence, and the whole quick frequency sweeping acquisition process can be completed.

The steerable ROM that has the frequency channel signal of this technical scheme carries out polling output, accomplishes the quick frequency sweep process, and coverage can reach 400MHZ, therefore this utility model technique can be accomplished and carry out quick frequency sweep collection to unmanned aerial vehicle 2.3G-2.5G, 5.7G-5.9G frequency channel signal, has practiced thrift the cost, has improved AD9361 and has gathered the bandwidth scope.

The device is low in cost and can realize rapid frequency sweep acquisition of the frequency hopping signal of the unmanned aerial vehicle.

Drawings

Fig. 1 is a schematic structural diagram of the embodiment.

Detailed Description

The contents of the present invention will be further described with reference to the accompanying drawings and examples, but the present invention is not limited thereto.

Example (b):

referring to fig. 1, the rapid frequency sweep acquisition device for the frequency hopping signal of the unmanned aerial vehicle comprises an AD9361 chip, a data processing module and an SPI module, wherein the data processing module and the SPI module are connected with the AD9361 chip, the SPI module is connected with a serial port protocol module, a register initialization module, a 2.3G-2.5G and 5.7G-5.9G dual-frequency-band frequency sweep module, and the serial port protocol module is further connected with the data processing module.

In the power-on process, the device realizes the initialization configuration of the AD9361 chip by using a pre-stored ROM unit and through the SPI time sequence, then, the device can start to control the ROM units with frequency band signals of 2.3G-2.5G and 5.7G-5.9G respectively to perform polling output by analyzing a command through a serial port, output data are written into the AD9361 chip through the SPI time sequence, and the whole rapid frequency sweeping acquisition process can be completed.

Claims

1. The utility model provides a quick sweep frequency collection system for unmanned aerial vehicle frequency hopping signal, characterized by includes AD9361 chip and the data processing module and the SPI module of being connected with AD9361 chip, the SPI module is connected with serial port protocol module, register initialization module and 2.3G-2.5G, 5.7G-5.9G dual-band sweep frequency module, and wherein serial port protocol module still is connected with data processing module.

2. The fast frequency sweep acquisition device for unmanned aerial vehicle frequency hopping signals according to claim 1, wherein the data processing module comprises a differential-to-single end unit, a serial-to-parallel conversion unit and a first MUX selector which are connected in sequence, and a receiving channel 1 unit and a receiving channel 2 unit which are connected in parallel are arranged between the serial-to-parallel conversion unit and the first MUX selector.

3. A fast frequency sweep acquisition device for unmanned aerial vehicle frequency hopping signals as claimed in claim 1, wherein the serial protocol module comprises a serial protocol parsing unit and a serial unit which are interconnected, and the serial unit is externally connected with a PC terminal.

4. The fast frequency sweep acquisition device for unmanned aerial vehicle frequency hopping signals as claimed in claim 1, wherein the SPI module comprises a first state machine unit, a second state machine unit, a third state machine unit and a second MUX selector unit which are connected in sequence.

5. The fast frequency sweep acquisition device for unmanned aerial vehicle frequency hopping signals as claimed in claim 1, wherein the register initialization module comprises a polling unit, a checking unit and ROM0, ROM1, ROM2, ROM3, ROM4, ROM5, ROM6, ROM7 and ROM8 units respectively connected with the polling unit and the checking unit, wherein the checking unit is connected with a second MUX selector unit in the SPI module.

6. The fast frequency sweep acquisition device for the unmanned aerial vehicle frequency hopping signal as claimed in claim 1, wherein the 2.3G-2.5G, 5.7G-5.9G dual band frequency sweep module comprises a third MUX selector, and a 2.3G-2.5G frequency sweep unit and a 5.7G-5.9G frequency sweep unit connected to the third MUX selector, wherein the third MUX selector is connected to a second MUX selector unit in the SPI module and a serial protocol parsing unit in the serial protocol module.

7. The fast frequency sweep acquisition device for unmanned aerial vehicle frequency hopping signals as claimed in claim 6, wherein the 2.3G-2.5G frequency sweep unit comprises a first polling output unit and a ROM2320M, a ROM2360M, a ROM2400M, a ROM2440M and a ROM2480M connected to the first polling output unit, wherein the first polling output unit is connected to a third MUX selector.

8. The fast frequency sweep acquisition device for unmanned aerial vehicle frequency hopping signals as claimed in claim 6, wherein the 5.7G-5.9G frequency sweep unit comprises a second polling output unit and a ROM5720M, a ROM5760M, a ROM5800M, a ROM5740M and a ROM5880M connected with the second polling output unit, wherein the second polling output unit is connected with a third MUX selector.