WO2016178559A1 - Procédé et ensemble permettant de déterminer la direction de vol d'une balle - Google Patents

Procédé et ensemble permettant de déterminer la direction de vol d'une balle Download PDF

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Publication number
WO2016178559A1
WO2016178559A1 PCT/NL2016/000011 NL2016000011W WO2016178559A1 WO 2016178559 A1 WO2016178559 A1 WO 2016178559A1 NL 2016000011 W NL2016000011 W NL 2016000011W WO 2016178559 A1 WO2016178559 A1 WO 2016178559A1
Authority
WO
WIPO (PCT)
Prior art keywords
bullet
conductors
sound
detection means
interrupted
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/NL2016/000011
Other languages
English (en)
Inventor
Rudolfus Johannes Maria VAN DER MEER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2016178559A1 publication Critical patent/WO2016178559A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41J—TARGETS; TARGET RANGES; BULLET CATCHERS
    • F41J5/00—Target indicating systems; Target-hit or score detecting systems
    • F41J5/04—Electric hit-indicating systems; Detecting hits by actuation of electric contacts or switches
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41G—WEAPON SIGHTS; AIMING
    • F41G3/00—Aiming or laying means
    • F41G3/14—Indirect aiming means
    • F41G3/147—Indirect aiming means based on detection of a firing weapon
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41J—TARGETS; TARGET RANGES; BULLET CATCHERS
    • F41J5/00—Target indicating systems; Target-hit or score detecting systems
    • F41J5/04—Electric hit-indicating systems; Detecting hits by actuation of electric contacts or switches
    • F41J5/041—Targets comprising two sets of electric contacts forming a coordinate system grid

Definitions

  • the invention relates to a method and an assembly for determining the flight direction of a bullet originating from e.g . gunfire or machine-gun fire.
  • a method for determining the flight direction of a bullet within an area comprising
  • a detection device comprising a spatial body of electrically non-conductive material, provided with a large number of parallel conductors which extend from top to bottom on or near the surface of the spatial body and which are each connected to an electric power source, and current detection means adapted to detect conductors through which a current flows, and to detect conductors through which no current flows;
  • computing means which are configured to calculate the flight direction R of the bullet from the position of the two conductors of which the current flow, as detected by the current detection means, was interrupted by a bullet;
  • the invention also includes an assembly (or configuration or system) for determining the flight direction of a bullet within an area, comprising a spatial body of electrically non-conductive material, provided with a large number of parallel conductors which extend from top to bottom on or near the surface of the spatial body and which are each connected to an electric power source, and current detection means adapted to detect the conductors through which a current flows, and to detect the conductors through which no current flows, and furthermore computing means, which are configured to calculate the flight direction R of the bullet from the position of the two conductors of which the current flow, as detected by the current detection means, was interrupted by a bullet.
  • the invention can be complemented with sound detection means (for example, one or more microphones) for detecting the sound (the "crack") of firing the bullet, and for detecting the time moment T crack on which that sound was received by the sound detection means. This enables determining the distance 5 bul between the shooting location and the detection device.
  • sound detection means for example, one or more microphones
  • Figure 1 shows an embodiment of an assembly according to the invention.
  • Figure 1 shows an embodiment of an assembly for determining the flight direction of a bullet originating from e.g . gunfire or machine-gun fire within an area .
  • the assembly comprises a hollow, optionally inflatable, spatial body 1 of an electrically non- conductive material, e.g . a plastic film, provided with a large number of parallel conductors 2 (for example 128) extending from top to bottom on or near the surface of said spatial body 1.
  • the conductors 1 are interconnected at the top to each other by means of, for example, a connecting ring 3 and are each connected at the bottom to a module 4 having an electrical power source and current detection means adapted to detect through which conductors a current flows, and to detect through which conductors no current flows.
  • the module 4 comprises computing means with, for example, a current detection matrix monitor and a digital processor, which module 4 is arranged to determine the direction of the bullet trajectory 5, from the position of the two conductors 2' of which is detected at a moment in time by the current detection means that no current flows anymore, as a result of interruption by a bullet.
  • the module 4 uses a (conventional or electronic) compass 6.
  • a bullet hits and travels through the spatial body 1 of the detection device, usually two conductors 2 are broken as a result. If the points in time are determined accurately at which the conductors 2 are interrupted, then the time difference ( ⁇ ⁇ ) is known between the breakage of the conductors 2. If the mutual distance between the conductors 2 ( ⁇ ) is also known, then it is easy to calculate the speed of the bullet
  • V bul ⁇ / ⁇ ⁇ If, for example, by means of a microphone the sound of the shot (crack) is detected, then the time difference ( ⁇ T crack ) is know between the crack and the breakage ⁇ 1 of the first (conductor) wire.
  • the speed of sound ( V sou ) is about 340 meters per second .
  • the bullet has flown through the air T bul seconds and has travelled in that time a distance X of:
  • V sou * (T bul + ⁇ crack ) V bul * T bul
  • T bul (V bul * T kog ) I V sou - ⁇ ⁇ crack T bul - T bul * V( bul / V sou ) - - ⁇ crack
  • ⁇ crack 1 second (bullet is faster than sound)
  • V sou 340 meter per second.
  • V bul 500 meter per second.
  • the bullet has not a constant speed, but slows down a bit during the flight.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

L'invention concerne un procédé permettant de déterminer la direction de vol d'une balle à l'intérieur d'une zone, consistant à : utiliser un corps spatial creux (1) constitué d'un matériau électriquement non-conducteur, pourvu d'un grand nombre de conducteurs parallèles (2) qui s'étendent de haut en bas sur la surface du corps spatial ou à proximité de ladite surface, chaque conducteur étant relié à une source d'alimentation électrique, et à un moyen de détection de courant conçu pour détecter les conducteurs au travers desquels un courant s'écoule et les conducteurs au travers desquels aucun courant ne s'écoule. L'invention comprend en outre également des moyens de calcul (4), configurés pour calculer la direction de vol de la balle, à partir de la position des deux conducteurs (2') dont l'écoulement de courant, tel que détecté par le moyen de détection de courant, a été interrompu par une balle. Si le dispositif est complété par un moyen de détection de son, il est possible d'effectuer une estimation grossière de la distance jusqu'à l'emplacement du tir.
PCT/NL2016/000011 2015-05-07 2016-05-04 Procédé et ensemble permettant de déterminer la direction de vol d'une balle Ceased WO2016178559A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1041292 2015-05-07
NL1041292A NL1041292B1 (nl) 2015-05-07 2015-05-07 Werkwijze en configuratie voor het bepalen van de richting van waaruit een kogel komt.

Publications (1)

Publication Number Publication Date
WO2016178559A1 true WO2016178559A1 (fr) 2016-11-10

Family

ID=56360450

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL2016/000011 Ceased WO2016178559A1 (fr) 2015-05-07 2016-05-04 Procédé et ensemble permettant de déterminer la direction de vol d'une balle

Country Status (2)

Country Link
NL (1) NL1041292B1 (fr)
WO (1) WO2016178559A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060053534A1 (en) * 2004-04-07 2006-03-16 Mullen Jeffrey D Advanced cooperative defensive military tactics, armor, and systems
EP2236422A1 (fr) * 2008-01-17 2010-10-06 IHI Corporation Dispositif de detection de matieres flottant dans l'espace
US20120188078A1 (en) * 2011-01-21 2012-07-26 Soles Alexander M Damage detection and remediation system and methods thereof
US20140091816A1 (en) * 2012-02-24 2014-04-03 Bruce Hodge Precision Target Methods & Apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060053534A1 (en) * 2004-04-07 2006-03-16 Mullen Jeffrey D Advanced cooperative defensive military tactics, armor, and systems
EP2236422A1 (fr) * 2008-01-17 2010-10-06 IHI Corporation Dispositif de detection de matieres flottant dans l'espace
US20120188078A1 (en) * 2011-01-21 2012-07-26 Soles Alexander M Damage detection and remediation system and methods thereof
US20140091816A1 (en) * 2012-02-24 2014-04-03 Bruce Hodge Precision Target Methods & Apparatus

Also Published As

Publication number Publication date
NL1041292B1 (nl) 2017-01-26
NL1041292A (nl) 2016-11-10

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