Fire-fighting device
Patent Information
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- BLOCKFIRE INTERNATIONAL
- Filing Date
- 2024-06-28
- Publication Date
- 2026-05-06
AI Technical Summary
Existing fire-fighting devices that rely on an 'active' approach, where the device is launched directly into a fire and relies on a pyrotechnic detonator to release a dispersible chemical extinguishing agent, often fail due to their inertia and trajectory, causing them to emerge from the fire before the fuse can ignite, especially on sloping terrain or with unsuitable projection speeds.
A fire-fighting device with a shock sensor module that detects mechanical shock upon impact, instantly triggering an electric ignition component to cause an explosion of an explosive charge, rupturing the envelope and dispersing the extinguishing agent, eliminating the need for prolonged exposure to fire.
Enables the device to release its extinguishing agent effectively upon impact, ensuring immediate activation and dispersion of the agent within or above the fire, regardless of terrain or projection speed, enhancing the effectiveness of the 'active' approach.
Smart Images
Figure EP2024068219_02012025_PF_FP_ABST
Abstract
Description
[0001] Description
[0002] Fire fighting device
[0003] Technical field of the invention
[0004] The present invention relates, in general, to the field of firefighting.
[0005] It particularly concerns fire-fighting devices.
[0006] State of the art
[0007] Whether they occur in urban areas or in the wilderness, fires can cause significant damage, both human and material.
[0008] Generally speaking, the human resources and equipment used to fight fires are adapted to their scale and the site concerned.
[0009] Many types of firefighting equipment are known, from simple foam or powder extinguishers to fire tanker trucks and water bomber aircraft.
[0010] As described in document US-6,796,382, there is also known a fire-fighting device consisting of a destructible container which is in the form of a sphere made of low-density rigid plastic foam (for example expanded polystyrene foam), about ten centimeters to a few tens of centimeters in diameter, and which contains a dispersible chemical product active against fire and a pyrotechnic detonator associated with a fuse.
[0011] In an "active" approach, it would be interesting to throw this fire-fighting device directly into the fire, so that its fuse ignites, ensuring the activation of the detonator, followed by the destruction of the container and the dispersion of the dispersible chemical product.
[0012] But, in practice, such firefighting devices are unfortunately not completely effective for this approach, particularly depending on the position of the fire to be extinguished or the configuration of the terrain.
[0013] It is indeed appropriate that these control devices remain in the fire for a sufficient time (at least a few seconds) to ignite its fuse and to activate the detonator ensuring the release of the dispersible chemical product.
[0014] However, due to its inertia and trajectory, the fire-fighting device is likely to come out of the fire before its fuse has had time to catch fire.
[0015] This is the case, for example, when the fire-fighting device bounces off the fire, the terrain is sloping, or the projection speed was not suitable. There is therefore a need to improve these fire-fighting devices to enable such an "active" approach.
[0016] Presentation of the invention
[0017] The present invention therefore proposes a fire-fighting device, improving / perfecting the fire-fighting devices in accordance in particular with document US-6796 382, which is particularly suited to such an active approach (projected / launched directly into the fire).
[0018] The device includes:
[0019] - an envelope which delimits an internal cavity in which at least one dispersible extinguishing agent is placed, and
[0020] - pyrotechnic means suitable for generating an explosion causing a rupture of said envelope and a dispersion of said extinguishing agent, which pyrotechnic means comprise:
[0021] - at least one explosive charge, generating said explosion, and
[0022] - electric detonating means intended to trigger said explosion of said at least one explosive charge, which electric detonating means comprise:
[0023] - an electrical ignition component, also called an igniter, designed to trigger, in an active state, said explosion of said at least one explosive charge, and
[0024] - a shock sensor module, connected to said electrical ignition component, designed to detect a mechanical shock received by said device and to bring said electrical ignition component into said active state upon detection of said mechanical shock, which shock sensor module comprises an electrical circuit comprising:
[0025] - a source of electrical energy,
[0026] - an electrical connector, for connecting said shock sensor module with said electrical ignition component,
[0027] - at least one electronic vibration sensor, intended to emit an electrical pulse upon detection of said mechanical shock,
[0028] - an electronic memory switch, with two states:
[0029] -- a blocked, nominal state, and
[0030] -- a passing state, under the effect of said electrical pulse emitted by said at least one electronic vibration sensor,
[0031] - a static relay, presenting two states:
[0032] -- a nominal, blocked state, and -- an on state, generated by the on state of said electronic memory switch, in which the electrical energy from said electrical energy source is transmitted to said electrical ignition component for its transition to the active state.
[0033] Thus, in practice, the device according to the invention can be projected directly into the fire and can release its extinguishing agent within this fire (or even in the immediate vicinity or above) thanks to its impact triggering system.
[0034] In fact, as soon as the projected device hits a surface (advantageously within this fire), its shock sensor detects a mechanical shock and brings (instantly) the ignition device into its active state.
[0035] The ignition device, in its active state, causes (instantaneously) the explosion of said at least one explosive charge and, as a corollary, the rupture of said casing and the dispersion of said extinguishing agent.
[0036] Such a device according to the invention therefore no longer requires a time of exposure to fire, as is necessary with the known fire-fighting devices of the prior art.
[0037] Other non-limiting and advantageous characteristics of the product in accordance with the invention, taken individually or in all technically possible combinations, are as follows:
[0038] - the electrical circuit comprises at least two electronic vibration sensors which are arranged in two different orientations;
[0039] - said electronic memory switch consists of a thyristor; preferably, the electrical circuit comprises electronic components intended to maintain a holding voltage in said electronic memory switch for a complementary time, advantageously when the voltage coming from the electrical energy source decreases and during the ignition time by said electrical ignition component; more preferably, the electronic components comprise at least one diode and at least one capacitor (preferably two capacitors in parallel);
[0040] - the electrical circuit comprises a resistor installed between said at least one electronic vibration sensor and said electronic memory switch to limit the current passing through a trigger of said electronic memory switch;
[0041] - the electrical circuit includes a resistor installed between the electrical energy source and the electronic memory switch, to ensure its blocking;
[0042] - the electrical circuit includes a light-emitting diode that can be controlled between two states: an off state, when the static relay is in its blocked state, and an on state, when the static relay is in its conducting state;
[0043] - the electrical connector is chosen from self-tightening electrical connectors; - the electrical connector is positioned in the center of the lower face of an electronic card to ensure perfect mechanical integration;
[0044] - the electrical circuit comprises electrical connectors associated with a removable insulator, for electrically insulating said electrical circuit from the electrical ignition component;
[0045] - the electric ignition component comprises a primer head which cooperates with said at least one explosive charge indirectly, by means of a pyrotechnic fuse which connects said primer head and said at least one explosive charge, or directly, within said at least one explosive charge;
[0046] - the shock sensor module is external to said internal cavity, on the surface of the envelope or at a distance from the envelope, or integrated into the internal cavity;
[0047] - the shock sensor module is implanted in a shell which has an outer surface comprising a concave spherical outer face, intended to fit the casing, and a convex spherical outer face.
[0048] The present invention also relates to the electrical detonating means for a device according to the invention.
[0049] Of course, the various features, variants and embodiments of the invention may be combined with each other in various combinations to the extent that they are not incompatible or mutually exclusive.
[0050] Detailed description of the invention
[0051] In addition, various other characteristics of the invention emerge from the appended description given with reference to the drawings which illustrate non-limiting embodiments of the invention and where:
[0052] [Fig. 1] is a schematic view, in section, of a fire-fighting device according to the invention comprising electric detonator means also according to the invention;
[0053] [Fig. 2] is a schematic and perspective view of the control device according to Figure 1, in which the shock sensor module is separated from the casing;
[0054] [Fig. 3] is a schematic, exploded view of the shock sensor module;
[0055] [Fig. 4] is a schematic top view of the shock sensor module;
[0056] [Fig. 5] is a schematic bottom view of the shock sensor module;
[0057] [Fig. 6] is a schematic view of the electrical circuit equipping the shock sensor module.
[0058] It should be noted that, in these figures, the structural and / or functional elements common to the different variants may have the same references. The present invention thus relates to a fire-fighting device, also referred to as a “device”.
[0059] Generally speaking, device 1 includes:
[0060] - an envelope 2 which delimits an internal cavity 3 in which at least one dispersible extinguishing agent 4 is placed, and
[0061] - pyrotechnic means 5 adapted to generate an explosion causing a rupture of the envelope 2 and a dispersion of the extinguishing agent 4.
[0062] Again generally, pyrotechnic means 5 include:
[0063] - at least one explosive charge 6 (also called a “pyrotechnic charge”), generating the explosion capable of causing the rupture of the casing 2 and the dispersion of the extinguishing agent 4, and
[0064] - electric detonator means 7 intended to trigger said explosion of said at least one explosive charge 6.
[0065] Still generally, the electric detonating means 7, here forming an impact triggering system, comprise:
[0066] - an electrical ignition component 8, also called an igniter, designed to trigger, in an active state, the explosion of said at least one explosive charge 6, and
[0067] - a shock sensor module 9, connected to the electrical ignition component 8, designed to detect a mechanical shock received by the device 1 and to bring the electrical ignition component 8 into its active state upon detection of this mechanical shock.
[0068] Envelope
[0069] The envelope 2 thus advantageously consists of a frangible envelope, also called “destructible”, adapted to be degraded by the explosion generated by the pyrotechnic means 5 while being able to resist a mechanical shock described below.
[0070] This envelope 2 here advantageously has the shape of a sphere (spherical shape).
[0071] This envelope 2 is advantageously made of a plastic material, preferably rigid low density, for example of the foam type, for example expanded polystyrene foam.
[0072] This envelope 2 is advantageously wrapped in a protective plastic film.
[0073] This envelope 2 advantageously has an external diameter of around ten, or a few tens, of centimeters.
[0074] Fire extinguishing agent
[0075] Said at least one extinguishing agent 4 preferably consists of a dispersible chemical product, advantageously a powder, active against fire. Said at least one extinguishing agent 4 is advantageously chosen from extinguishing powders which are composed essentially of inorganic non-toxic salts, mixed with water-repellent and anti-caking agents as well as various additives (stearates, silicones, starch, inert minerals, etc.) to facilitate their flow.
[0076] Such powders may be based on sodium or potassium bicarbonate, or ammonium phosphate and / or sulfate (preferably ammonium phosphate).
[0077] Explosive charge
[0078] Said at least one explosive charge 6 is advantageously implanted within the internal cavity 3, more preferably in the center of the latter.
[0079] Said at least one explosive charge 6 is advantageously embedded in said at least one extinguishing agent 4. In other words, said at least one explosive charge 6 is advantageously surrounded (or enveloped) by said at least one extinguishing agent 4.
[0080] Said at least one explosive charge 6 is for example chosen from black powders for fireworks (advantageously deflagrating mixtures of sulfur, potassium nitrate (saltpeter) and charcoal), in particular from bursting charges.
[0081] Said at least one explosive charge 6 is advantageously contained in an envelope which can be made of different materials (paper, fabric, plastic, etc.).
[0082] Electrical ignition component
[0083] The electric ignition component 8 advantageously consists of means adapted to give rise to the combustion of said at least one explosive charge 6.
[0084] Such an electric ignition component 8 is advantageously chosen from pyrotechnic detonators. It generally consists of a short-circuited resistor, which is brought into contact with a ball of pyrotechnic mixture.
[0085] Such an electric ignition component 8 thus has two states:
[0086] - an inactive, initial and inert state, not triggering said explosion of said at least one explosive charge 6, and
[0087] - an active, final state, capable of triggering the explosion of said at least one explosive charge 6.
[0088] This electric ignition component 8 can advantageously have two main arrangements with respect to said at least one explosive charge 6:
[0089] - a “direct” arrangement (in particular figure 1), in which the electric ignition component 8 is positioned directly within said at least one explosive charge 6, or
[0090] - an “indirect” arrangement (not shown), in which the electric ignition component 8 is connected to said at least one explosive charge 6 via a pyrotechnic fuse. In practice, the electric ignition component 8 advantageously comprises a primer head 81 which cooperates with said at least one explosive charge 6:
[0091] - indirectly, by means of a pyrotechnic fuse which connects this primer head 81 and said at least one explosive charge 6, or
[0092] - directly, within said at least one explosive charge 6 (figure 1).
[0093] For example, the initiator head 81 (for example composed of mercury fulminate) is welded to a double conductor 82. When the short circuit is created at the double conductor 82, the initiator head 81 heats up by the Joule effect and reaches its autoignition temperature.
[0094] For “direct” mounting, preferably, the double conductor 82 extends radially within the casing 2 and the cavity 3 so as to terminate in an external electrical connector 83 allowing its connection to the shock sensor 9 provided with the complementary electrical connector 12 (figure 2).
[0095] For “indirect” assembly, the aforementioned pyrotechnic fuse then advantageously extends from said at least one explosive charge 6 and emerges at the level of the external surface of the casing 2.
[0096] Such a pyrotechnic wick may be of interest for considering, in addition to active use (projected onto a target surface), a passive use of the device 1 which would come into contact with a fire.
[0097] Shock sensor module
[0098] Generally speaking, the shock sensor module 9 is advantageously:
[0099] - outside the internal cavity 3, on the surface of the envelope 2 (figure 1 in particular) or at a distance from the envelope 2, or
[0100] - integrated into the internal cavity 3.
[0101] For surface fixing, the shock sensor module 9 is for example attached to the casing 2, by means of adhesive means A (double-sided for example).
[0102] In practice, the shock sensor module 9 is designed to, on the one hand, detect a mechanical shock received by the device 1 and, on the other hand, bring the aforementioned electrical ignition component 8 into said active state upon detection of this mechanical shock.
[0103] By "mechanical shock" we advantageously include accelerations of very high amplitude resulting from the impact / collision of the device 1 on a receiving surface or target surface. Such a mechanical shock also corresponds to a discontinuity in the speed of the device 1 in motion.
[0104] For example and without limitation, such a mechanical shock corresponds to the impact of the device 1, on a rigid receiving surface, which is dropped from a drop height of at least 0.5 m (or even at least 1 m, or even at least 1.5 m). The shock sensor module 9 is designed not to trigger the ignition of the electric ignition component 8 if the device 1 is shaken or when thrown by its user.
[0105] The shock sensor module 9 advantageously has two states:
[0106] - an initial, resting state, in which the electrical ignition component 8 also remains in its inactive state, and
[0107] - an activated, final state, in which this shock sensor module 9 controls the electrical ignition component 8 in its active state capable of triggering the explosion of said at least one explosive charge 6.
[0108] To ensure this operation, as illustrated in Figures 3 to 6, the shock sensor module 9 comprises an electrical circuit 10 comprising a combination of electrical components:
[0109] - a source of electrical energy 11,
[0110] - an electrical connector 12, for the electrical connection of the shock sensor module 9 with the electrical ignition component 8,
[0111] - at least one electronic vibration sensor 13, intended to emit an electrical pulse upon detection of the aforementioned mechanical shock,
[0112] - an electronic memory switch 14, and
[0113] - a static relay 15.
[0114] The electrical circuit 10 is advantageously carried by an electronic card 101.
[0115] The electronic card 10 advantageously comprises two faces 101a, 101b:
[0116] - a lower face 101a (figure 5), intended to be oriented towards the envelope 2, and
[0117] - an upper face 101b (figure 4), intended to be oriented opposite the envelope 2.
[0118] The electrical energy source 11 consists for example of a lithium battery, advantageously 3 Volt CR2477, soldered onto the electronic card 101.
[0119] Preferably, the electrical connector 12 is chosen from self-tightening electrical connectors, more preferably from self-tightening quick electrical connectors.
[0120] By "self-tightening electrical connector" we advantageously mean an electrical connector without a tightening system to ensure electrical continuity.
[0121] The electrical connector 12 is advantageously positioned in the center of the lower face 101a of the electronic card 101, to ensure perfect mechanical integration (figure 5).
[0122] Said at least one electronic vibration sensor 13 is intended to emit an electrical pulse upon detection of the aforementioned mechanical shock (preferably an impact of the device 1 on a rigid receiving surface). In this case, the electrical circuit 10 comprises at least two of said electronic vibration sensors 13 which are arranged in two different orientations, for example at 90°. Such an embodiment is advantageous for responding to all positions of the shock sensor module 9 during the mechanical shock.
[0123] Furthermore, the electronic memory switch 14 has two states:
[0124] - a blocked, nominal state, and
[0125] - a passing state, under the effect of the electrical pulse emitted by said at least one electronic vibration sensor 13.
[0126] According to a preferred embodiment, the electronic memory switch 14 consists of a thyristor.
[0127] Such a thyristor 14 advantageously comprises:
[0128] - two main terminals: the anode and the cathode, and
[0129] - a third terminal, called a trigger, which is used to control the thyristor.
[0130] Classically in itself, the thyristor is a component which becomes conductive between its anode and its cathode if a current comes to excite its trigger (for example 1 pA typical, and
[0131] 10 pA maximum).
[0132] The disappearance of the trigger current does not change the state of the thyristor: it remains on as long as sufficient current passes between its anode and its cathode (holding current).
[0133] In this case, said at least one electronic vibration sensor 13 is preferably connected to the trigger of this thyristor 14.
[0134] Furthermore, the electrical circuit 10 advantageously comprises electronic components 17 intended to maintain the holding voltage in the electronic memory switch 14 for a complementary time, advantageously when the voltage coming from the electrical energy source 11 decreases and during the ignition time by the electrical ignition component 8.
[0135] For this, the electronic components 17 advantageously comprise at least one diode 171 and at least one capacitor 172.
[0136] The capacitors 172 are advantageously two in number, preferably mounted in parallel.
[0137] These electronic components 17 thus maintain the electronic memory switch 14 in an on state when the voltage of the electrical energy source drops.
[0138] 11 during the ignition time of the electric ignition component.
[0139] Preferably, the electrical circuit 10 also comprises a resistor 18 installed between said at least one electronic vibration sensor 13 and said electronic memory switch 14 to limit the current passing through the trigger of this electronic memory switch 14.
[0140] Still preferably, the electrical circuit 10 comprises a resistor 19 installed between the electrical energy source 11 and the electronic memory switch 14, to ensure its blocking.
[0141] Furthermore, the static relay 15 (or static contactor) also has two states:
[0142] - a blocked, nominal state, and
[0143] - an on state, generated by the on state of said electronic memory switch 14, in which the electrical energy from said electrical energy source 11 is transmitted to the electrical ignition component 8 for its transition to the active state.
[0144] Generally speaking, the electrical circuit 10 advantageously comprises a light-emitting diode 20 (or LED) which can be controlled between two states:
[0145] - an off state, when the static relay 15 is in its blocked state, and
[0146] - an on state, when the static relay 15 is in its on state.
[0147] Still generally, the electrical circuit 10 advantageously comprises electrical connectors 21 associated with a removable insulator 22 (also called a safety tab), to electrically insulate the electrical circuit 10 with respect to the electrical ignition component 8.
[0148] The electrical connectors 21 advantageously include a double spring contact to guarantee perfect electrical continuity during mechanical shock.
[0149] The removable insulator 22 is intended to be inserted at the level of these electrical connectors 21. This removable insulator 22 is intended to be removed before use.
[0150] Still generally, the shock sensor module 9 is advantageously installed in a shell 91 which has an exterior surface comprising:
[0151] - a concave spherical outer face 911, intended to fit the envelope 2, advantageously formed by a first part 911a (possibly in two parts), and
[0152] - a convex spherical outer face 912, advantageously formed by a second part 912a.
[0153] The shell 91 is for example made of a rigid plastic material, advantageously resistant to the aforementioned mechanical shock.
[0154] If necessary, the two parts 911a, 912a are assembled, for example by means of screws 913, to enclose the electrical circuit 10.
[0155] The first part 911a advantageously comprises an orifice 911b for access to the electrical connector 12 intended to be electrically connected to the electrical ignition component 8. Operating method
[0156] The shock sensor module 9 is installed on the device 1, advantageously by connection to the electrical ignition component 8 via the electrical connector 12.
[0157] Once in place, if applicable, the removable insulator 22 can be removed. The shock sensor module 9 is operational.
[0158] Device 1 can be set in motion (thrown, projected, dropped, sent, etc.) within the fire to be extinguished, so as to land on a target surface.
[0159] During the mechanical shock, the electronic circuit 10 successively generates:
[0160] - the emission of an electrical pulse by said at least one electronic vibration sensor 13,
[0161] - triggering the conduction (or switching) of the electronic memory switch 14, which changes from the blocked state to the on state,
[0162] - triggering of the conduction (or switching) of the static relay 15 (on state),
[0163] - the transmission of energy from the electrical energy source 11 to the electrical ignition component 8, if applicable via the electrical connector 12.
[0164] The activated shock sensor module 9 then controls the electrical ignition component 8 in its active state.
[0165] If necessary, a short circuit is created at the double conductor 82, so that the priming head 81 heats up by the Joule effect and reaches its self-ignition temperature.
[0166] The primer head 81 triggers the explosion of said at least one explosive charge 6 and the dispersion of said at least one extinguishing agent 4:
[0167] - directly, when the primer head 81 is housed directly within said at least one explosive charge 6 (figure 1), or
[0168] - indirectly, when the primer head 81 cooperates with the pyrotechnic fuse which connects said primer head 81 and said at least one explosive charge 6 (not shown).
Claims
Claims
1. A fire-fighting device (1), which device (1) comprises: - an envelope (2) which delimits an internal cavity (3) in which at least one dispersible extinguishing agent (4) is placed, and - pyrotechnic means (5) adapted to generate an explosion causing a rupture of said envelope (2) and a dispersion of said extinguishing agent (4), which pyrotechnic means (5) comprise: - at least one explosive charge (6), generating said explosion, and - electric detonator means (7) intended to trigger said explosion of said at least one explosive charge (6), which electric detonator means (7) comprise: - an electrical ignition component (8), designed to trigger, in an active state, said explosion of said at least one explosive charge (6), and - a shock sensor module (9), connected to said electrical ignition component (8), designed to detect a mechanical shock received by said device (1) and to bring said electrical ignition component (8) into said active state upon detection of said mechanical shock, which shock sensor module (9) comprises an electrical circuit (10) comprising: - a source of electrical energy (11), - an electrical connector (12), for connecting said shock sensor module (9) with said electrical ignition component (8), - at least one electronic vibration sensor (13), intended to emit an electrical pulse upon detection of said mechanical shock, - an electronic memory switch (14), having two states: -- a blocked, nominal state, and -- a passing state, under the effect of said electrical pulse emitted by said at least one electronic vibration sensor (13), - a static relay (15), presenting two states: -- a blocked, nominal state, and -- an on state, generated by the on state of said electronic memory switch (14), in which the electrical energy of said electrical energy source (11) is transmitted to said electrical ignition component (8) for its transition to the active state.
2. Device (1) according to claim 1, characterized in that the electrical circuit (10) comprises at least two electronic vibration sensors (13) which are arranged in two different orientations.
3. Device (1) according to any one of claims 1 or 2, characterized in that said electronic memory switch (14) consists of a thyristor.
4. Device (1) according to claim 3, characterized in that the electrical circuit (10) comprises electronic components (17) intended to maintain a holding voltage in said electronic memory switch (14) for a complementary time, advantageously when the voltage coming from the electrical energy source (11) decreases and during the ignition time by said electrical ignition component (8).
5. Device (1) according to claim 4, characterized in that the electronic components (17) comprise at least one diode (171) and at least one capacitor (172).
6. Device (1) according to any one of claims 1 to 5, characterized in that the electrical circuit (10) comprises a light-emitting diode (20) controllable between two states: - an off state, when the static relay (15) is in its blocked state, and - an on state, when the static relay (15) is in its on state.
7. Device (1) according to any one of claims 1 to 6, characterized in that the electrical connector (12) is chosen from self-tightening electrical connectors (12).
8. Device (1) according to any one of claims 1 to 7, characterized in that the electrical connector (12) is positioned in the center of the lower face (101a) of an electronic card (101).
9. Device (1) according to any one of claims 1 to 8, characterized in that the electrical circuit (10) comprises electrical connectors (21) associated with a removable insulator (22), to electrically isolate said electrical circuit (10) from the electrical ignition component (8).
10. Fire-fighting device (1) according to any one of claims 1 to 9, characterized in that the shock sensor module (9) is: - outside said internal cavity (3), on the surface of the envelope (2) or at a distance from the envelope (2), or - integrated into the internal cavity (3).
11. Electrical detonating means (7) for device (1) according to any one of claims 1 to 10, characterized in that the electrical detonating means (7) comprise: - an electrical ignition component (8), designed to trigger, in an active state, the explosion of said at least one explosive charge (6), and - a shock sensor module (9), connected to said electrical ignition component (8), designed to detect a mechanical shock received by said device (1) and to bring said electrical ignition component (8) into said active state upon detection of said mechanical shock, which shock sensor module (9) comprises an electrical circuit (10) comprising: - a source of electrical energy (11), - an electrical connector (12), for connecting said shock sensor module (9) with said electrical ignition component (8), - at least one electronic vibration sensor (13), intended to emit an electrical pulse upon detection of said mechanical shock, - an electronic memory switch (14), having two states: -- a blocked, nominal state, and -- a passing state, under the effect of said electrical pulse emitted by said at least one electronic vibration sensor (13), - a static relay (15), presenting two states: -- a blocked, nominal state, and -- an on state, generated by the on state of said electronic memory switch (14), in which the electrical energy of said electrical energy source (11) is transmitted to said electrical ignition component (8) for its transition to the active state.