Setup for locating impacts with interactive plate and transducers

Patent metadata

Field	Value
Publication number	US-11725913-B2
Application number	US-201917292961-A
Country	US
Kind code	B2
Filing date	Nov 8, 2019
Priority date	Nov 12, 2018
Publication date	Aug 15, 2023
Grant date	Aug 15, 2023

Abstract

This installation for locating impacts comprises an interactive plate, at least three transducers arranged and distributed against the interactive plate in order to pick up progressive mechanical waves propagating therein and to transform them into electrical signals, and an electronic central unit programmed to locate an impact in the interactive plate by an analysis of the electrical signals that it receives from the transducers. It further includes an additional plate attached to the front face of the interactive plate and having an impact-receiving zone, and means for attaching the additional plate to the interactive plate, configured to ensure contact against the entire portion of the front face of the interactive plate located opposite the impact-receiving zone of the additional plate.

First claim

The invention claimed is:

1. An impact location installation comprising:
an interactive plate capable of propagating progressive mechanical waves from an impact, having a front face for receiving impacts;
at least three transducers arranged and distributed against the front face or a rear face of the interactive plate, designed to pick up progressive mechanical waves propagating in the interactive plate and transform them into electrical signals; and
an electronic central unit, connected to the transducers to receive their electrical signals, programmed to locate the impact in the interactive plate by an analysis of the received electrical signals;
wherein the impact location installation further comprises:
an additional plate attached to the front face of the interactive plate and having an impact receiving zone; and
means for attaching the additional plate to the interactive plate, configured to ensure contact against an entirety of a portion of the front face of the interactive plate that is opposite the impact receiving zone of the additional plate,
wherein the attaching means includes:
at least one rigid reinforcement plate or bar attached, at the rear face of the interactive plate, to both the interactive and additional plates, and at least one spacer disposed between central portions of the interactive plate and the at least one rigid reinforcement plate or bar so as to bend the interactive plate and the additional plate.

2. The impact location installation according to claim 1 , wherein the attaching means comprise means for mechanically clamping the additional plate against the interactive plate.

3. The impact location installation according to claim 2 , wherein the mechanical clamping means comprise screw and nut systems arranged at a periphery of the additional plate.

4. The impact location installation according to claim 1 , wherein the attaching means comprises a contact-making layer against the entirety of the portion of the front face of the interactive plate that is opposite the impact receiving zone of the additional plate, said contact-making layer being interposed between the interactive plate and the additional plate.

5. The impact location installation according to claim 4 , wherein the contact-making layer made of a material containing an adhesive, in particular an epoxy and/or transparent adhesive.

6. The impact location installation according to claim 4 , wherein the contact-making layer is made of a material comprising a double-sided adhesive sheet, in particular a repositionable adhesive sheet.

7. The impact location installation according to claim 4 , wherein the contact-making layer is made of a liquid material extending between the entirety of said portion of the front face of the interactive plate and of the impact receiving zone of the additional plate by capillary action.

8. The impact location installation according to claim 1 , wherein:
the interactive plate is designed in one of the materials of the set consisting of polycarbonate and metal;
the additional plate is made of one of the materials of the set consisting of metal sheet, polycarbonate and ceramic of the type aluminum oxynitride, aluminum oxide, or yttrium oxide.

9. The impact location installation according to claim 1 , for a recreational or sports shooting application, comprising a target representation to be displayed in a plane of the interactive plate or of the additional plate.

Assignees

• Commissariat Energie Atomique

Inventors

• Alexandre Jean-Marc
• Boden Robert
• Bolzmacher Christian

Classifications

• F41J5/056 Primary

  Switch actuation by hit-generated mechanical vibration of the target body, e.g. using shock or vibration transducers · CPC title