Intelligent multi-rotor rescue thrower and control method thereof

Patent metadata

Field	Value
Publication number	US-11796292-B2
Application number	US-202217927902-A
Country	US
Kind code	B2
Filing date	Feb 15, 2022
Priority date	May 21, 2021
Publication date	Oct 24, 2023
Grant date	Oct 24, 2023

Abstract

In an intelligent multi-rotor rescue thrower, a throwing projectile head is located at a foremost end of the thrower, a parachute storage bin is mounted at a center of a front end of the throwing projectile head, a rear end of the throwing projectile head is connected to a projectile body shell through threads, and a first splitter plate, a second splitter plate, and a third splitter plate are directly connected to the projectile body shell through slide grooves built in the projectile body shell to equally divide a space in a cavity of the projectile body shell; connecting flanges tightly connect the projectile body shell to motors, a rotor is connected to an upper end of each of the motors, and three rotors are provided in the space in the cavity of the projectile body shell.

First claim

What is claimed is:

1. A thrower structure with rotors, comprising a throwing projectile head, a projectile body shell, connecting flanges, three rotors, motors, a first splitter plate, a second splitter plate, a third splitter plate, a flight control module, a visual module, a laser radar, a battery, and a parachute storage bin, wherein
the throwing projectile head is located at a foremost end of a thrower and configured for breaking a wind and reducing a resistance in an ascending process of the thrower, the parachute storage bin is mounted at a center of a front end of the throwing projectile head, a rear end of the throwing projectile head is connected to the projectile body shell through threads, and the first splitter plate, the second splitter plate, and the third splitter plate are directly connected to the projectile body shell through slide grooves built in the projectile body shell to equally divide a space in a cavity of the projectile body shell;
the connecting flanges tightly connect the projectile body shell to the motors, each of the rotors is connected to an upper end of a respective one of the motors, and the rotors are provided in the space in the cavity of the projectile body shell, evenly distributed along a circumference, and separated from each other by the first splitter plate, the second splitter plate, and the third splitter plate, to provide a power for a system; and
the thrower structure is also provided with the flight control module, and the visual module, the laser radar, and the battery are connected to the flight control module.

2. The thrower structure with the rotors according to claim 1 , wherein the flight control module is configured to read data of an accelerometer, a gyroscope, a magnetometer, a barometer, and the visual module in real time, fuse the data through Kalman filtering or graph optimization, estimate a speed, a posture, a position, and a surrounding environment of the thrower in real time, form an anti-interference control feedback using various data information obtained by the estimation and the fusion, and control the motors to realize an expected posture, speed, and position.

3. The thrower structure with the rotors according to claim 1 , wherein the rotors are at 120 degrees relative to each other to form an equilateral triangle shape and are mounted outwards.

4. The thrower structure with the rotors according to claim 1 , wherein the flight control module, the visual module, and the laser radar are mounted at a center of a bottom end of the projectile body shell and respectively located between adjacent ones of the first splitter plate, the second splitter plate, and the third splitter plate.

5. The thrower structure with the rotors according to claim 1 , wherein the battery is mounted in a gap at a connection position of the first splitter plate, the second splitter plate, and the third splitter plate.

6. A control method of the thrower structure with the rotors according to claim 1 , comprising the following steps:
in a throwing process, totally arranging a main parachute in the parachute storage bin, arranging an auxiliary parachute outside the parachute storage bin to cover the throwing projectile head, an interior of the parachute storage bin being divided into three spaces which are not communicated with each other and have equal volumes by the first splitter plate, the second splitter plate, and the third splitter plate, air entering the cavity from a bottom and being discharged by the rotors in a falling process of the thrower, the air exerting an acting force on the thrower when being discharged to push the thrower to move in an opposite direction to wind, and adjusting counter-acting force borne by the thrower via changing rotating speeds of the motors, so as to control a position and posture; and
in the falling process, a gravity center of the thrower being mainly distributed on an air inlet side of the first splitter plate, the second splitter plate, and the third splitter plate wherein the visual module and the laser radar are mounted in the air inlet side, so that the thrower falling downwards with the air inlet side as a bottom, and the auxiliary parachute being firstly stressed to drag the main parachute out of the parachute storage bin, so as to reduce a falling speed of the thrower; meanwhile, the flight control module, the visual module, and the laser radar starting to work, wherein the flight control module estimates the posture of the thrower and adjusts the rotating speeds of the motors to guarantee a stable-posture fall, the visual module identifies and positions a fall point, and transmits information to the flight control module, the laser radar monitors height data of the thrower in real time and feeds back the height data in real time, and a processor calculates a current position of the thrower relative to the fall point by acquiring the information, and controls the rotating speeds of the motors in real time, such that a falling track of the thrower approaches the fall point to realize fall point tracking.

Assignees

• Univ Jiangsu

Inventors

• Shen Yue
• Li Yicen
• Wang Dewei
• Wang Xiuli
• Shi Zhixiang
• Shen Yayun

Classifications

• F42B10/58 Primary

  of rotochute type · CPC title

• B63C9/26 Primary

  Cast or life lines; Attachments thereto; Containers therefor; {Rescue nets or the like}(adaptations of aerial cableways to shipboard use B63B27/18; guns for line throwing F41F; line-carrying missiles F42B12/68) · CPC title

• F42B10/56

  of parachute {or paraglider} type · CPC title

• F42B12/56

  for dispensing discrete solid bodies (F42B12/70 takes precedence) · CPC title

• F42B12/36 Primary

  for dispensing materials; for producing chemical or physical reaction; for signalling {; for transmitting information} · CPC title