Unlock instant, AI-driven research and patent intelligence for your innovation.

An Omnidirectional Ultrasonic Obstacle Detector for Quadcopters

A quadcopter and ultrasonic technology, applied in the field of obstacle detection in flight environment, can solve problems such as poor operability, reduce time, improve detection efficiency and real-time, and reduce complexity

Active Publication Date: 2017-12-01
杭州航天星寰空间技术有限公司
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of poor operability of a single fixed airborne ultrasonic detector in fault detection, distance measurement, and target finding, and to provide an omnidirectional ultrasonic obstacle detector for quadcopters

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • An Omnidirectional Ultrasonic Obstacle Detector for Quadcopters
  • An Omnidirectional Ultrasonic Obstacle Detector for Quadcopters
  • An Omnidirectional Ultrasonic Obstacle Detector for Quadcopters

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0035] Specific implementation mode one: the following combination figure 1 Describe this embodiment, this embodiment includes a single chip microcomputer, multiplex switch, booster circuit, amplifier circuit, 12 ultrasonic transmitting probes, 12 ultrasonic receiving probes.

[0036] The multi-way selection includes 24 switches, which are respectively switch 21, switch 22 ... switch 224, the switch 21 is connected to the input end of the booster circuit 31, the switch 22 is connected to the output end of the amplifier circuit 81, and the switch 23 is connected to the booster circuit 32 The input terminal is connected, the switch 24 is connected with the output terminal of the amplifying circuit 82, ... the switch 223 is connected with the input terminal of the boost circuit 312, and the switch 224 is connected with the output terminal of the amplifying circuit.

[0037] The input and output terminals of the single chip microcomputer are connected with the multi-way selection ...

specific Embodiment approach 2

[0045] Specific embodiment two: the difference between this embodiment and embodiment one is that it also includes a temperature compensation circuit 7, and a temperature compensation algorithm and a Kalman filter algorithm are added in the single-chip microcomputer 1, and the output terminal of the temperature compensation circuit 7 is connected to the single-chip microcomputer 1 connected.

[0046] The composition of the temperature compensation circuit 7 is as attached Figure 4 As shown, it is composed of PT100 temperature-sensitive resistor 71, amplifying circuit one 72, amplifying circuit two 73, AD circuit 74, filtering algorithm 75, and temperature compensation algorithm 76.

[0047] Since the ambient temperature generally does not change much when disturbed, the present invention uses a PT100 temperature sensitive resistor. The PT100 is characterized by a small range of measurable temperature changes, and has the advantages of good linearization, accurate measurement ...

specific Embodiment approach 3

[0051] Specific embodiment three: the difference between this embodiment and embodiment two is that it also includes an interface 6 connected to the early warning system, and an early warning algorithm is added in the single-chip microcomputer, and the input and output ends of the interface 6 are connected with the single-chip microcomputer 1.

[0052] In order to prevent the aircraft from colliding with environmental obstacles during flight and cause aircraft failure, a flight warning system is added to avoid collisions between the aircraft and surrounding environmental obstacles. When the distance between the aircraft and the environmental obstacles in a certain direction is less than the critical value, the early warning system sends out an alarm and proposes the best avoidance plan.

[0053] The single-chip microcomputer 1 receives the electrical signal sent back by the ultrasonic receiving probe 2, calculates the distance between the surrounding environment obstacles and t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the field of flight environment obstacle detection, and particularly relates to an omnidirectional ultrasonic obstacle detector for a quadcopter. The omnidirectional ultrasonic obstacle detector achieves omnidirectional distance measurement, collision detection and early warning. The omnidirectional ultrasonic obstacle detector for the quadcopter comprises a single chip microcomputer, a multichannel selective switch, a booster circuit, an amplifying circuit, an ultrasonic transmitting probe, an ultrasonic receiving probe, a temperature compensating circuit and an interface. According to the omnidirectional ultrasonic obstacle detector for the quadcopter, the omnidirectional ultrasonic probes are adopted so that the surrounding environment can be detected in an omnidirectional mode. At a certain moment, the measurement of the relative distance of the quadcopter and the surrounding environment, collision threat finding and early warning can be simultaneously achieved. Military reconnaissance time is greatly shortened, the reconnaissance speed advantage is achieved, when the omnidirectional ultrasonic obstacle detector works, attitude adjustment of the quadcopter is of no need, the operation complexity is also greatly lowered, and the detection efficiency and the real-time performance are improved.

Description

technical field [0001] The invention belongs to the field of flight environment obstacle detection, and in particular relates to an omnidirectional ultrasonic obstacle detector for a four-axis aircraft that realizes omnidirectional distance measurement, collision detection and early warning. Background technique [0002] As the urban environment in which unmanned aerial vehicles fly is becoming more and more complex, the difficulty of UAV data collection is greatly increased, and higher requirements are put forward for the detection of airborne ultrasonic sensors. Conventional airborne ultrasonic detectors use a fixed single ultrasonic transmitter and receiver to collect data, and process the data through a single-chip microcomputer. This makes the aircraft only obtain obstacles in a single direction at a certain moment; at the same time, when the traditional airborne ultrasonic detector measures the distance of the surrounding environment, it needs to adjust the attitude of...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01S15/93G01S15/08
CPCG01S15/08G01S15/93
Inventor 吴限德张宪亮谢亚恩易钰驰王巍张德伟许江涛吕红庆郭凤至李方瑞
Owner 杭州航天星寰空间技术有限公司