Impact detection device, associated detection system and aircraft equipped with such a system

Patent metadata

Field	Value
Publication number	US-12466578-B2
Application number	US-202017779935-A
Country	US
Kind code	B2
Filing date	Dec 8, 2020
Priority date	Dec 11, 2019
Publication date	Nov 11, 2025
Grant date	Nov 11, 2025

Abstract

An impact detection device includes an impact detector, a wireless communication device, an energy storage device, an autonomous electrical energy generation device, a device for receiving energy by radio frequency, the device being configured to adopt the following two modes: a first mode, referred to as autonomous mode, in which the autonomous electrical energy generation device is configured to supply the impact detector and the wireless communication device; a second mode, referred to as external mode, in which the device for receiving energy by radio frequency is configured to supply the impact detector and the wireless communication device.

First claim

The invention claimed is:

1 . An impact detection device comprising an impact detector, a wireless communication device, an energy storage device, an autonomous electrical energy generation device distinct from the impact detector and comprising a piezoelectric module and a Seebeck module, and a system adapted to receive energy by radio frequency, the impact detection device being configured to adopt the following two modes:
a first autonomous mode, in which the autonomous electrical energy generation device is configured to supply the impact detector and the wireless communication device; a second external mode, in which the system adapted to receive energy by radio frequency is configured to supply the impact detector and the wireless communication device, wherein the wireless communication device is configured to receive instructions to indicate to the impact detection device the operating mode to adopt among the two modes.

2 . The impact detection device according to claim 1 , wherein the impact detection device is configured to alternate between the first autonomous mode, the second external mode and a third transition mode, in which the energy storage device is configured to supply, without external energy input, the impact detector and the wireless communication device, the first autonomous, the second external and the third transition modes being mutually exclusive.

3 . The impact detection device according to claim 2 , wherein when the impact detection device is in the second external mode, the system adapted to receive energy by radio frequency is configured to supply the impact detector and the wireless communication device through the energy storage device.

4 . The impact detection device according to claim 2 , wherein, when the impact detection device is in the first autonomous mode, the autonomous electrical energy generation device is configured to supply the impact detector and the wireless communication device through the energy storage device.

5 . The impact detection device according to claim 1 , wherein the wireless communication device is configured to operate as the device for receiving energy by radio frequency when the impact detection device is in the second external mode.

6 . An impact detection system for detecting impacts on a structure, the detection system comprising:
a plurality of impact detection devices according to claim 1 positioned on a surface of the structure, each detection device being associated with an identifier relating to a predetermined zone of the structure; a plurality of separate communication devices configured to communicate with the impact detection devices of the plurality of detection devices so as to collect measurements made by said impact detection devices and to associate the measurements with the identifier of the corresponding impact detection device.

7 . The impact detection system according to claim 6 , wherein the plurality of communication devices are configured to send an instruction to the impact detection devices to adopt a mode among the first autonomous mode, a third transition mode, or the second external mode.

8 . The impact detection system according to claim 6 , wherein each communication device comprises an energy storage device and/or a memory.

9 . An aircraft comprising a fuselage and an impact detection system according to claim 6 configured to detect impacts on the fuselage, the impact detection devices of the impact detection system being arranged on an inner surface of the fuselage and the plurality of communication devices of the impact detection system being arranged in the aircraft.

10 . The impact detection device according to claim 1 , wherein the impact detection device is arranged in an aircraft, wherein, based on the instructions received by the wireless communication device, the impact detection device is (a) in the first autonomous mode when the aircraft is in a flight phase and (b) in the second external mode when the aircraft is in a ground phase.

11 . The impact detection device according to claim 10 , wherein the first autonomous mode and the second external mode are mutually exclusive.

12 . The impact detection device according to claim 11 , wherein a transition between the first autonomous mode and the second external mode is initiated automatically based on a signal received by the wireless communication device.

Assignees

• Safran Electrical & Power
• Safran Electronics & Defense

Inventors

• Guillot François
• Roques Serge Thierry
• Fanton Nicolas

Classifications

• H02J2105/32

  for aircrafts · CPC title

• B64D2045/0085

  Devices for aircraft health monitoring, e.g. monitoring flutter or vibration · CPC title

• B64D2045/008

  Devices for detecting or indicating hard landing · CPC title

• H10N10/13

  characterised by the heat-exchanging means at the junction · CPC title

• H02J2207/50

  Charging of capacitors, supercapacitors, ultra-capacitors or double layer capacitors · CPC title