Crash detection device, flying body crash detection method, parachute or paraglider deployment device, and airbag device

Patent metadata

Field	Value
Publication number	US-2020239136-A1
Application number	US-201816756583-A
Country	US
Kind code	A1
Filing date	Oct 11, 2018
Priority date	Oct 16, 2017
Publication date	Jul 30, 2020
Grant date	—

Abstract

Provided is a crash detection device, a method of detecting a crash of a flying object, a parachute or paraglider deployment device, and an airbag device that can improve the reliability in terms of safety. A device detecting a crash of a flying object includes a detection part capable of detecting a flying state of the flying object, a calculation section capable of determining whether the flying state of the flying object is abnormal based on data on the flying state of the flying object acquired by the detection part, and an abnormal signal output section capable of outputting an abnormal signal to the outside when the calculation section determines that the flying state of the flying object is abnormal. The calculation section acquires data from the detection part at a sampling frequency of 1 kHz or more, determines whether the data is data indicating that the flying state of the flying object is abnormal or noise that is unnecessary data when the data is equal to or greater than a predetermined threshold value, determines that the flying state of the flying object is abnormal when the data is determined to be the data indicating that the flying state of the flying object is abnormal.

First claim

1 . A crash detection device that can be mounted on a flying object and that can detect a crash of the flying object, the crash detection device comprising:
a detection part that can detect a flying state of the flying object; and a calculation section that can determine whether the flying state of the flying object is abnormal based on data on the flying state of the flying object acquired by the detection part, wherein the calculation section acquires the data from the detection part at a sampling frequency of 1 kHz or more, determines whether the data is data indicating that the flying state of the flying object is abnormal or noise that is unnecessary data (hereinafter, a signal or noise determination), and determines that the flying state of the flying object is abnormal when the data is determined to be the data indicating that the flying state of the flying object is abnormal.

2 . The crash detection device according to claim 1 , wherein the calculation section includes an abnormal mode in which the data is acquired from the detection part at the sampling frequency of 1 kHz or more, and a normal mode in which the data is acquired from the detection part at a sampling frequency of less than 1 kHz at a normal time when there is no abnormality, and
the calculation section is in the normal mode in an initial state, and the calculation section switches from the normal mode to the abnormal mode and acquires the data from the detection part when the data acquired from the detection part is equal to or greater than a predetermined threshold value in the normal mode.

3 . The crash detection device according to claim 1 , wherein the calculation section performs the signal or noise determination based on information on a half width or a peak area of a peak of the data acquired by calculating the data acquired from the detection part.

4 . A method of detecting a crash of a flying object, the flying object including a safety device, the method comprising:
a data acquisition step of acquiring a data of a flying state of the flying object at a sampling frequency of 1 kHz or more; a first determination step of determining whether the data acquired in the data acquisition step is equal to or greater than a predetermined threshold value; a second determination step of determining whether the data is data indicating that a flying state of the flying object is abnormal or noise that is unnecessary data when the data is determined to be equal to or greater than the predetermined threshold value by the first determination step; and a step of activating the safety device by the second determination step when the data is determined to be the data indicating that the flying state of the flying object is abnormal.

5 . A parachute or paraglider deployment device comprising:
a crash detection device described in claim 1 , a parachute or a paraglider that is deployable; and an ejection device that, when an abnormal signal is output by the crash detection device, receives the abnormal signal and ejects the parachute or the paraglider.

6 . An airbag device comprising:
an airbag that is inflatable; a crash detection device described in claim 1 ; and a gas generator that, when an abnormal signal is output by the crash detection device, receives the abnormal signal and supplies gas into the airbag.

Assignees

• Nippon Kayaku Kk

Inventors

• Nakamura Hiroshi
• Yagihashi Yasuhiko
• Sasamoto Koichi

Classifications

• G05B23/0205

  by means of a monitoring system capable of detecting and responding to faults · CPC title

• G05D1/83

  Limitation of acceleration or structural stress · CPC title

• G05D1/617

  Safety or protection, e.g. defining protection zones around obstacles or avoiding hazards (arrangements for controlling the position or course of two or more vehicles for avoiding collisions therebetween G05D1/693; arrangements for reacting to or preventing system or operator failure G05D1/80) · CPC title

• B64U10/13

  Flying platforms · CPC title

• B64U20/83

  Electronic components structurally integrated with aircraft elements, e.g. circuit boards carrying loads · CPC title