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Unmanned aerial vehicle obstacle avoidance system

A drone and obstacle avoidance technology, applied in the field of drones, can solve the problems of weak target identification and elimination of false alarms, difficult installation and use of drones, and impact on obstacle avoidance accuracy, etc., to achieve good all-weather obstacle avoidance, The effect of strong long-distance detection ability

Inactive Publication Date: 2016-09-28
BEIJING BRISKY TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, visual obstacle avoidance is difficult to work normally in dark environments and dusty and smoky environments, and the ability to eliminate false alarms is relatively weak; ultrasonic obstacle avoidance has poor temperature stability and is easily affected by temperature changes. Obstacle avoidance accuracy, and long-distance detection The ability to identify targets is poor; ToF infrared obstacle avoidance is easily affected by dust, smoke, and building light pollution, and the ability to identify targets and eliminate false alarms is also weak; existing radar obstacle avoidance is based on low and medium frequencies, and the radar is large in size and difficult to detect. Install and use on the drone

Method used

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  • Unmanned aerial vehicle obstacle avoidance system

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Embodiment 1

[0049] figure 1 A structural block diagram of the UAV obstacle avoidance system according to an embodiment of the present invention is shown. For ease of description, only parts related to the embodiments of the present invention are shown. Such as figure 1 As shown, the system mainly includes:

[0050] A radar signal transceiving subsystem 11 , a signal processing subsystem 12 connected to the radar signal transceiving subsystem 11 , and a communication control subsystem 13 connected to the signal processing subsystem 12 .

[0051] The embodiment of the present invention uses highly integrated system modules to construct the entire UAV obstacle avoidance system. Among them, the radar signal transceiver subsystem 11 connects the external environment with the UAV obstacle avoidance system, and is mainly used for transmitting and receiving radar signals. The signal processing subsystem 12 is mainly used for controlling the radar signal transceiving subsystem 11 and process...

Embodiment 2

[0095] Figure 7 A structural block diagram of a UAV obstacle avoidance system according to another embodiment of the present invention is shown. For ease of description, only parts related to the embodiments of the present invention are shown. Figure 7 Winning mark and Figure 1-6 The same components have the same functions, and detailed descriptions of these components are omitted for brevity.

[0096] Such as Figure 7 as shown, Figure 7 The system shown with figure 1 The main difference in the system shown is that it also includes:

[0097] The power management subsystem 14 connected with the signal processing subsystem 12 is used to supply power to each subsystem, including a power management module and a second CAN communication interface.

[0098] Wherein, the power management module may include a power management chip. The power management module can integrate a variety of performance and enhanced module designs, and convert the voltage of the external power ...

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Abstract

The invention relates to an unmanned aerial vehicle obstacle avoidance system comprising a radar signal transmitting and receiving subsystem, a signal processing subsystem and a communication control subsystem. The radar signal transmitting and receiving subsystem comprises a receiving control module used for demodulating and filtering an acquired echo signal to get a baseband signal and sending the baseband signal to the signal processing subsystem, and a transmitting control module used for generating a modulation signal according to a transmitting control signal and modulating an extremely-high-frequency carrier signal with the modulation signal to generate a transmitting signal. The signal processing subsystem is used for generating a transmitting control signal and analyzing the baseband signal received from the receiving control module to generate obstacle avoidance data. The communication control subsystem is used for sending the obstacle avoidance data to a flight control module of an unmanned aerial vehicle. The unmanned aerial vehicle obstacle avoidance system provided by the embodiment of the invention is miniaturized and light, and the radar obstacle avoidance system can be applied to small unmanned aerial vehicles.

Description

technical field [0001] The invention relates to the technical field of drones, in particular to an obstacle avoidance system for drones. Background technique [0002] With the rapid development of UAV technology, UAVs have been widely used in many fields such as aerial photography, surveying and mapping, and material transportation and delivery. Obstacle avoidance is a crucial issue during the flight of UAVs. At present, the obstacle avoidance methods adopted by drones mainly include visual obstacle avoidance, ultrasonic obstacle avoidance, ToF (Time of Flight, time of flight) infrared obstacle avoidance and radar obstacle avoidance. Among them, visual obstacle avoidance is difficult to work normally in dark environments and dusty and smoky environments, and the ability to eliminate false alarms is relatively weak; ultrasonic obstacle avoidance has poor temperature stability and is easily affected by temperature changes. Obstacle avoidance accuracy, and long-distance detect...

Claims

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Application Information

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IPC IPC(8): G05D1/10
CPCG05D1/101
Inventor 冯伟明
Owner BEIJING BRISKY TECH DEV CO LTD