CN216356732U

CN216356732U - Unmanned aerial vehicle carries AIS and reconnoiters equipment

Info

Publication number: CN216356732U
Application number: CN202123023086.4U
Authority: CN
Inventors: 易显富; 张寰宇
Original assignee: Chengdu Hewei Times Technology Co ltd
Current assignee: Chengdu Hewei Times Technology Co ltd
Priority date: 2021-12-03
Filing date: 2021-12-03
Publication date: 2022-04-19
Anticipated expiration: 2031-12-03

Abstract

The utility model provides airborne AIS (automatic identification system) interception and reception equipment of an unmanned aerial vehicle, which comprises an N-K radio frequency interface, an AIS radio frequency signal conditioning module and an AIS digital processing module which are sequentially connected, wherein the AIS digital processing module is respectively connected with an AIS interception and reception system output interface and a JTAG network debugging interface, and the airborne AIS interception and reception equipment also comprises a power supply connected with EMI filtering, and the power supply is connected with the AIS radio frequency signal conditioning module and the AIS digital processing module. Unmanned aerial vehicle machine carries AIS and reconnoiters equipment has advantages such as miniaturization, low-power consumption, high reliability, environmental suitability.

Description

Unmanned aerial vehicle carries AIS and reconnoiters equipment

Technical Field

The utility model relates to investigation equipment, in particular to airborne AIS (automatic identification system) investigation equipment for an unmanned aerial vehicle.

Background

With the continuous development of unmanned aerial vehicles, unmanned aerial vehicles have been widely applied to the investigation and management of ships such as marine safety, inland shipping and the like. Airborne AIS (automatic identification system) detection and collection equipment for unmanned aerial vehicles is also widely popularized and applied. The demand for miniaturization, high reliability and low cost of the unmanned aerial vehicle airborne AIS equipment is also increasing. At present, AIS (automatic identification system) monitoring and receiving equipment is mostly changed from the conventional shipborne mode, and cannot meet the related requirements of miniaturization, low power consumption, high reliability, environmental adaptability and the like of unmanned aerial vehicle airborne AIS monitoring and receiving equipment.

SUMMERY OF THE UTILITY MODEL

The utility model provides airborne AIS (automatic identification system) detecting and receiving equipment for an unmanned aerial vehicle, which solves the problem of the airborne AIS detecting and receiving equipment arranged on the unmanned aerial vehicle, and adopts the following technical scheme:

the utility model provides an unmanned aerial vehicle machine carries AIS and detects receipts equipment, is including the N-K radio frequency interface, AIS radio frequency signal conditioning module, the AIS digital processing module that connect gradually, AIS digital processing module is connected respectively with AIS detection and receipt system output interface, JTAG network debugging interface, still includes the power that is connected with EMI filtering, the power is connected with AIS radio frequency signal conditioning module, AIS digital processing module.

The EMI filter adopts a BSCF1307-472 chip and is used for inhibiting electromagnetic radiation and electromagnetic interference on a power supply.

The power supply comprises a non-isolated power supply module, a protection circuit is arranged at the input end of the non-isolated power supply module, and the output end of the non-isolated power supply module is connected with the voltage stabilizing module and the isolated power supply module respectively.

The non-isolated power supply module adopts an LMZM33602 chip; the voltage stabilizing module adopts an ADP5054 chip to supply power to the AIS digital processing module; the isolation power supply module adopts an LM1117 chip to supply power for the AIS radio frequency signal conditioning module.

The non-isolated power supply module is connected with the AIS digital processing module through a voltage and current monitoring module, and the voltage and current monitoring module adopts an INA260 chip.

The AIS radio frequency signal conditioning module comprises an amplitude limiter, a first filter, a low-noise amplifier, a second filter, a driving amplifier and an ADC chip which are sequentially connected, wherein the amplitude limiter is connected with the N-K radio frequency interface, and the ADC chip sends ADC sampling data to a main control FPGA chip of the AIS digital processing module.

The amplitude limiter adopts MADL-011021-.

The AIS digital processing module comprises a main control FPGA chip, and a DDR3 and an EMMC connected with the main control FPGA chip, wherein the main control FPGA chip adopts a ZYNQ7020 chip.

The main control FPGA chip is used for inputting ADC sampling data of the AIS radio frequency signal conditioning module and voltage and current data of a power supply, transmitting the data to the AIS interception and reception data output interface through the 422 level conversion module, and transmitting the data to the JTAG network debugging interface through the network interface PHY and the JTAG.

The 422 level conversion module adopts an ADM4855 chip, and the network port PHY adopts an 88E1512 chip.

Unmanned aerial vehicle machine carries AIS and reconnoiters equipment has advantages such as miniaturization, low-power consumption, high reliability, environmental suitability. In the aspect of structural design, the core board card is compact in layout, and miniaturized components are used under the condition of meeting the heat dissipation condition, so that the utilization efficiency of the PCB is fully improved, and the volume of a product is greatly reduced. Under the conditions of the same performance index and the same environmental adaptability, the unmanned aerial vehicle airborne AIS signal detection and collection system has the characteristics of miniaturization and low power consumption, meets the requirement of airborne AIS signal detection and collection of the unmanned aerial vehicle, and has better use flexibility and function expansion capability.

Drawings

Fig. 1 is a block diagram of the structure of the unmanned aerial vehicle airborne AIS reconnaissance device;

fig. 2 is a circuit schematic of the EMI filter.

FIG. 3 is a block diagram of the power supply;

FIG. 4 is a block diagram of the AIS RF signal conditioning module;

fig. 5 is a block diagram of the structure of the AIS digital processing module.

Detailed Description

As shown in fig. 1, the airborne AIS monitoring and receiving device of the unmanned aerial vehicle comprises an N-K radio frequency interface, an AIS radio frequency signal conditioning module, an AIS digital processing module, a power supply and an AIS radio frequency signal conditioning module, wherein the N-K radio frequency interface, the AIS radio frequency signal conditioning module and the AIS digital processing module are sequentially connected, the AIS digital processing module is respectively connected with an AIS monitoring and receiving data output interface and a JTAG network debugging interface, and the power supply is connected with an EMI filter.

The input voltage range of the unmanned aerial vehicle airborne AIS detection and collection equipment is 22-30V, and the rated voltage is 28V. In order to meet the requirements of low power consumption, power supply characteristics and electromagnetic compatibility of the unmanned aerial vehicle, the unmanned aerial vehicle is specially designed for power management and is respectively designed from three aspects of an EMI filter, power protection and low power consumption.

As shown in fig. 2, in order to meet the requirement of electromagnetic compatibility, an EMI filter is designed at the input port of the power supply, so that electromagnetic radiation and electromagnetic interference on the power supply can be effectively suppressed, and the EMI filter adopts a BSCF1307-472 chip.

As shown in fig. 3, for ensuring that the airborne AIS monitoring and receiving device of the unmanned aerial vehicle works stably at the voltage, and effectively protecting the AIS monitoring and receiving device from permanent damage under the abnormal condition of the power supply, the voltage and current monitoring module is designed at the overvoltage, overcurrent, undervoltage and short-circuit (reverse connection) protection circuit designed at the power supply input port, and can monitor the input voltage and current information in real time. Specifically, the method comprises the following steps:

the power supply comprises a protection circuit, a non-isolation power supply module and a voltage stabilization module which are sequentially connected, wherein the non-isolation power supply module is also connected with the isolation power supply module, the protection circuit comprises an overvoltage, overcurrent, undervoltage and short circuit (reverse connection) protection circuit, the non-isolation power supply module adopts an LMZM33602 chip to reduce 28V DC voltage to 12V DC voltage, the voltage stabilization module adopts an ADP5054 chip to reduce 12V DC voltage to 5V DC voltage, the voltage stabilization module supplies power for the AIS digital processing module, and the isolation power supply module adopts a 111LM 7 chip to supply power for the AIS radio frequency signal conditioning module.

The non-isolated power supply module is connected with the AIS digital processing module through the voltage and current monitoring module, the voltage and current monitoring module sends acquired voltage and current data to a main control FPGA chip of the AIS digital processing module, and the voltage and current monitoring module adopts an INA260 chip.

The chips of the EMI filter and power supply are as in table 1:

table 1:

serial number	Name (R)	Model number	Remarks for note
				1	EMI filter	BSCF1307-472
2	Voltage and current detection module	INA260
				3	Isolated power supply module	LM1117
4	Non-isolated power supply module	LMZM33602
				5	DC-DC voltage stabilizing module	ADP5054

As shown in fig. 4, the AIS radio frequency signal conditioning module includes an amplitude limiter, a first filter, a low noise amplifier, a second filter, a driver amplifier, and an ADC chip, which are connected in sequence, the amplitude limiter is connected to the N-K radio frequency interface, and the ADC chip sends the ADC sampling data to the main control FPGA chip of the AIS digital processing module.

The amplitude limiter adopts MADL-011021-.

As shown in fig. 5, the AIS digital processing module includes a main control FPGA chip, and DDR3 and EMMC connected to the main control FPGA chip, and comprehensively analyzes the airborne environment of the unmanned aerial vehicle and the AIS signal interception requirement, the main control FPGA chip adopts ZYNQ7020 chip series of Xilinx corporation, the ARM core of Cotex-a9 is embedded in the FPGA, on one hand, the CPU meets the index requirement, and on the other hand, an asynchronous serial port can be generated by using the logic resource of the PL end of the FPGA to transmit AIS interception data. Meanwhile, the power consumption and the weight can be reduced as much as possible while the requirements of technical indexes are met.

The major properties of the ZYNQ7020 chip are as follows: (1) a dual-core Cortex-A9ARM processor is integrated inside, and 667MHz dominant frequency is adopted in the task; (2) single-precision and double-precision floating-point arithmetic units; (3) 32KB I/D L1 Cache and 512KB L2 Cache are integrated on a chip; (4) the FPGA logic adopts a 28nm process; (5) an 85k logic unit; (6)220 DSP resources; (7)600KB of on-chip RAM resources.

The DDR3 adopts MT41K128M16JT, and the running memory reaches 1G. The EMMC adopts MTFC8GLDDQ, and the storage space reaches 8G.

The main control FPGA chip is used for inputting ADC sampling data of the AIS radio frequency signal conditioning module and voltage and current data of a power supply, transmitting the data to the AIS interception and reception data output interface through the 422 level conversion module, and transmitting the data to the JTAG network debugging interface through the network interface PHY and the JTAG. The 422 level conversion module adopts an ADM4855 chip, and the network port PHY adopts an 88E1512 chip.

The power consumption statistics of the whole equipment are shown in table 2, the total power consumption of the device is 5.775W, the design power efficiency is about 80%, the power efficiency of the isolation power is 87%, and the total power input power is 8.29W.

Table 2:

in the aspect of structural design, the core board card is compact in layout, and miniaturized components are used under the condition of meeting the heat dissipation condition, so that the utilization efficiency of the PCB is fully improved, and the volume of a product is greatly reduced. Under the conditions of the same performance index and the same environmental adaptability, the unmanned aerial vehicle airborne AIS signal detection and collection system has the characteristics of miniaturization and low power consumption, meets the requirement of airborne AIS signal detection and collection of the unmanned aerial vehicle, and has better use flexibility and function expansion capability.

Claims

1. The utility model provides an unmanned aerial vehicle machine carries AIS and reconnoiters equipment which characterized in that: the system comprises an N-K radio frequency interface, an AIS radio frequency signal conditioning module and an AIS digital processing module which are sequentially connected, wherein the AIS digital processing module is respectively connected with an AIS monitoring and receiving system output interface and a JTAG network debugging interface, and the system also comprises a power supply connected with EMI filtering, and the power supply is connected with the AIS radio frequency signal conditioning module and the AIS digital processing module.

2. The airborne AIS reconnaissance device of claim 1, wherein: the EMI filter adopts a BSCF1307-472 chip and is used for inhibiting electromagnetic radiation and electromagnetic interference on a power supply.

3. The airborne AIS reconnaissance device of claim 1, wherein: the power supply comprises a non-isolated power supply module, a protection circuit is arranged at the input end of the non-isolated power supply module, and the output end of the non-isolated power supply module is connected with the voltage stabilizing module and the isolated power supply module respectively.

4. The airborne AIS reconnaissance device of claim 3, wherein: the non-isolated power supply module adopts an LMZM33602 chip; the voltage stabilizing module adopts an ADP5054 chip to supply power to the AIS digital processing module; the isolation power supply module adopts an LM1117 chip to supply power for the AIS radio frequency signal conditioning module.

5. The airborne AIS reconnaissance device of claim 3, wherein: the non-isolated power supply module is connected with the AIS digital processing module through a voltage and current monitoring module, and the voltage and current monitoring module adopts an INA260 chip.

6. The airborne AIS reconnaissance device of claim 1, wherein: the AIS radio frequency signal conditioning module comprises an amplitude limiter, a first filter, a low-noise amplifier, a second filter, a driving amplifier and an ADC chip which are sequentially connected, wherein the amplitude limiter is connected with the N-K radio frequency interface, and the ADC chip sends ADC sampling data to a main control FPGA chip of the AIS digital processing module.

7. The airborne AIS reconnaissance device of claim 6, wherein: the amplitude limiter adopts MADL-011021-.

8. The airborne AIS reconnaissance device of claim 1, wherein: the AIS digital processing module comprises a main control FPGA chip, and a DDR3 and an EMMC connected with the main control FPGA chip, wherein the main control FPGA chip adopts a ZYNQ7020 chip.

9. The airborne AIS reconnaissance device of claim 8, wherein: the main control FPGA chip is used for inputting ADC sampling data of the AIS radio frequency signal conditioning module and voltage and current data of a power supply, transmitting the data to the AIS interception and reception data output interface through the 422 level conversion module, and transmitting the data to the JTAG network debugging interface through the network interface PHY and the JTAG.

10. The airborne AIS reconnaissance device of claim 9, wherein: the 422 level conversion module adopts an ADM4855 chip, and the network port PHY adopts an 88E1512 chip.