A system for mounting an accessory on a helmet to enable data communication.

Abstract

A system for mounting an accessory on a helmet that enables data communication. The mounting system includes a helmet bracket (18) configured to be mounted on the helmet (14), a fastening assembly (20) for the removable attachment of the accessory (12) to the helmet bracket (18), and a wireless communication device (30) comprising at least one radio communication assembly (32) configured for the transmission of radio signals between the helmet bracket (18) and the accessory (12), each radio communication assembly (32) having a first antenna (36) disposed on the accessory (12) and a second antenna (42) disposed on the helmet bracket (18). Figure for the abstract: 1

Description

Title of the invention: System for mounting an accessory on a helmet enabling data communication

[0001] The present invention relates to the field of removable mounting systems for an accessory on a helmet.

[0002] To use night vision binoculars while wearing a helmet, it is possible to provide a removable mounting system comprising a helmet mount fixed to the helmet and allowing the night vision binoculars to be selectively attached to the helmet mount for use or detached from the helmet mount when not in use.

[0003] Night vision goggles are for example associated with an electrical system disposed on the helmet and configured to supply the night vision goggles with electrical energy and / or to exchange data signals with the night vision goggles, in particular to receive images acquired by the night vision goggles and / or to send images to be displayed on the night vision goggles and / or additional data to be integrated into the images displayed by the night vision goggles, in particular augmented reality data.

[0004] It is necessary to ensure the connection of the night vision binoculars to such an electrical system.

[0005] To do this, it is possible to equip the electrical system with a cable fitted with a supplementary cable plug for a binoculars provided on night vision binoculars.

[0006] To use the night vision binoculars, the user must then attach the night vision binoculars to the helmet mount and then connect the cable plug to the binocular plug.

[0007] Another solution is to provide a connection device comprising a headset connector provided on the headset support and a binocular connector provided on the night vision binoculars, the binocular connector coming into contact with the headset connector due to the mounting of the night vision binoculars on the headset connector.

[0008] The helmet connector and the binocular connector are, for example, equipped with electrical contacts that come into contact with each other due to the mounting of the night vision binoculars on the helmet support.

[0009] It is desirable to have a mounting system that allows the connection of night vision goggles to an electrical system located on the helmet in a way that is easy for the user while ensuring a good connection and a good seal. water and / or dust.

[0010] One of the aims of the invention is to provide a removable mounting system for an accessory on a helmet allowing a connection between the accessory and an electrical system located on the helmet, which is easy to use and robust.

[0011] To this end, the invention proposes a system for mounting an accessory on a helmet, the mounting system comprising a helmet support configured to be mounted on the helmet, a fastening assembly for the removable attachment of the accessory to the helmet support, and a wireless communication device comprising at least one radio communication assembly configured for the transmission of radio signals between the helmet support and the accessory, each radio communication assembly having a first antenna disposed on the accessory and a second antenna disposed on the helmet support.

[0012] Each radio communication unit allows for the exchange of data signals between the accessory and the headset support. This allows, for example, the accessory to transmit data to the headset support or to receive data transmitted by the headset support.

[0013] Each radio communication assembly is robust. In particular, each radio communication assembly is inherently dustproof and / or waterproof, with data transmission occurring without requiring contact between electrical contacts.

[0014] According to particular embodiments, the mounting system comprises one or more of the following optional features, taken individually or in all technically possible combinations:

[0015] - the first antenna and the second antenna of each radio communication set The nication are directional and point towards each other when the accessory is mounted on the helmet stand;

[0016] - the first antenna and the second antenna of each radio communication set nification are of the horn antenna type or printed radiating element antenna;

[0017] - the mounting system comprises two separate radio communication sets, one configured for transmitting radio communication signals from the headset support to the accessory and the other configured for transmitting radio communication signals from the accessory to the headset support;

[0018] - the first antenna and the second antenna of one of the two radio sets communication systems are configured for sending and / or receiving radio waves with a first polarization direction, the first antenna and the second antenna of the other between the two radio communication systems being configured for sending and / or receiving radio waves with a second polarization direction distinct from the first polarization direction, and preferably orthogonal to the first polarization direction;

[0019] - each radio communication unit is configured for the transmission of radio signals by amplitude modulation of a carrier;

[0020] - the carrier has a frequency between 57 GHz and 71 GHz, in particular a 60 GHz carrier;

[0021] - the mounting system includes at least one electrical connection device, each electrical connection device comprising first contacts arranged on the accessory and second contacts arranged on the helmet support, the first contacts coming into contact with the second contacts due to the mounting of the accessory on the helmet support;

[0022] - the first contacts and the second contacts comprise contact pads fixed and movable contact pistons, each contact piston coming into contact with a respective contact pad due to the mounting of the accessory on the helmet support;

[0023] - the first contacts and the second contacts are arranged to come into contact following a direction of mounting the accessory on the helmet support by translation;

[0024] - the mounting system includes a sealing device configured to ensure a sealing of the electrical connection device when the first contacts are in contact with the second contacts, the sealing device comprising at least one sealing gasket intended to bear against a corresponding sealing surface, preferably due to the mounting of the accessory on the helmet support.

[0025] The invention also relates to a night vision system comprising night vision binoculars and a mounting system as defined above for the removable mounting of the night vision binoculars on a helmet.

[0026] The invention and its advantages will be better understood upon reading the following description, given solely by way of non-limiting example, and made with reference to the accompanying drawings, in which:

[0027] - [Fig. 1] [Fig. 1] is a schematic side view of an assembly comprising a helmet, an electrical system carried by the helmet, an accessory and a removable mounting system for the accessory on the helmet allowing the accessory to be linked to the electrical system;

[0028] - [Fig.2] [Fig.2] is a diagram illustrating the electrical system, the accessory and the mounting system;

[0029] - [Fig.3] [Fig.3] is a detail view illustrating a fastening assembly, a wireless communication device and a connection device with contact of the mounting system.

[0030] As illustrated in [Fig. 1], a mounting system 10 is configured for the removable mounting of an accessory 12 on a helmet 14 with transmission of data signals and, optionally, power signals, between the accessory 12 and an electrical system 16 disposed on the helmet 14.

[0031] Helmet 14 is for example a protective helmet, in particular a protective helmet for military use, police use, industrial use or sports use.

[0032] Accessory 12 is, for example, night vision binoculars.

[0033] Night vision binoculars are configured to acquire images and to display the images, possibly with integration of augmented reality data, which are for example calculated by the electrical system 16 located on the helmet 14 and supplied to the night vision binoculars.

[0034] The mounting system 10 selectively allows the accessory 12 to be mounted on the helmet 14 and the accessory 12 to be removed from the helmet 14.

[0035] The mounting system 10 includes a helmet bracket 18 configured to be mounted on the helmet 14 and a fastening assembly 20 for the removable attachment of the accessory 12 on the helmet bracket 18.

[0036] The mounting assembly 20 includes, for example, an accessory interface 22 disposed on the accessory 12 and a support interface 24 disposed on the helmet support 18.

[0037] The accessory interface 22 and the support interface 24 are complementary and configured to be engaged with each other (i.e. mechanically connected to each other) for attaching the accessory 12 to the helmet support 18, and disengaged from each other for removing the accessory 12 from the helmet support 18.

[0038] The fastening assembly 20 is preferably designed for quick disengagement of the accessory interface 22 and the support interface 24.

[0039] The accessory interface 22 and the support interface 24 are, for example, configured to be engaged with each other and disengaged from each other by translation along a mounting direction M as illustrated by an arrow on [Fig.2].

[0040] In one embodiment, one of the accessory interface 22 and the support interface 24 includes a tenon and the other a groove, the tenon fitting into the groove for the engagement of the accessory interface 22 and the support interface 24.

[0041] The tenon and the groove are for example profiled along the mounting direction M and have for example complementary dovetail profiles.

[0042] The fastening assembly 20 preferably includes a locking device (not shown), for example by snap-fit, to keep the accessory interface 22 and the support interface 24 engaged with each other.

[0043] The locking device is, for example, configured to be unlocked by the user, for example by pressing a release button or by exerting sufficient disengagement force to separate the accessory interface 22 and the support interface 24 against the locking device.

[0044] As schematically shown in [Fig.2], the mounting system 10 comprises a device wireless communication 30 configured to ensure wireless transmission of data signals between accessory 12 mounted on helmet 14 and electrical system 16 arranged on helmet 14.

[0045] The communication device 30 is configured to perform radio communication between the accessory 12 and the helmet support 18, and more particularly between the accessory interface 22 and the support interface 24 when they are engaged with each other.

[0046] Radiocommunication means communication by transmission of radio waves in a medium.

[0047] The communication device 30 includes, for example, at least one radio communication unit 32 for transmitting radio communication signals between the accessory 12 and the headset support 18, each radio communication unit 32 comprising:

[0048] - a first subassembly 34 disposed on the accessory 12, in particular on the accessory interface 22, the first subassembly 34 comprising a first radio antenna 36 and a first radio module 38 configured to transmit and / or receive radio waves via the first antenna 36, ​​and

[0049] - a second sub-assembly 40 arranged on the helmet support 18, in particular on the headset interface 24, the second sub-assembly 40 comprising a second radio antenna 42 and a second radio module 44 configured to transmit and / or receive radio waves through the second antenna 42.

[0050] The first radio module 38 is a transmitter configured to emit radio waves via the first antenna 36, ​​a receiver configured to receive radio waves via the first antenna 36, ​​or a transceiver configured to emit and receive radio waves via the first antenna 36.

[0051] The second radio module 44 is a transmitter configured to emit radio waves via the second antenna 42, a receiver configured to receive radio waves via the second antenna 42, or a transceiver configured to emit and receive radio waves via the second antenna 42.

[0052] Each radio communication set 32 ​​is configured for the transmission of radio communication signals from accessory 12 to helmet support 18, in which case the first subassembly 34 is configured for the emission of radio waves to the second subassembly 40 and / or for the transmission of radio communication signals from helmet support 18 to accessory 12, in which case the second subassembly 40 is configured for the emission of radio waves to the first subassembly 34.

[0053] In the mounted state (i.e. when the accessory 12 is mounted on the helmet support 18), the first antenna 36 and the second antenna 42 of each radio communication assembly 32 are positioned relative to each other so as to allow the transmission of radio signals from one to the other.

[0054] The first antenna 36 and the second antenna 42 of each radio communication set 32 ​​are, for example, directional antennas.

[0055] By "directional antenna", it is understood that the antenna is configured to emit radio waves propagating along a preferred transmission / reception axis and / or to receive radio waves propagating along the preferred transmission / reception axis.

[0056] Even if the antennas are directional, depending on the emission pattern of the first antenna 36 and / or the emission pattern of the second antenna 42 of each radio communication set 32, it is possible to configure the communication device 30 in such a way that in the mounted state, the transmit / receive axis A1 of the first antenna 36 and the transmit / receive axis A2 of the second antenna 42 are aligned or make a non-zero angle between them, all while allowing the transmission of radio signals from one antenna to the other.

[0057] Preferably, in the assembled state, the transmit / receive axes Al, A2 of the first antenna 36 and the second antenna 42 of each radio communication assembly 32 make an angle between 0° and 120° with each other.

[0058] In a particular embodiment, as illustrated in Figures 2 and 3, in the mounted state the transmit / receive axes Al, A2 of the first antenna 36 and the second antenna 42 of one or each of the radio communication sets 32 make an angle substantially zero between them and are therefore substantially aligned.

[0059] Alternatively, in the mounted state, the transmit / receive axes Al, A2 of the first antenna 36 and the second antenna 42 of one or each of the radio communication sets 32 make a non-zero angle between them.

[0060] The prediction of a non-zero angle between the transmission / reception axes Al, A2 of the first antenna 36 and the second antenna 42 of the same radio communication set 32 ​​can be exploited to achieve a compact arrangement.

[0061] The first antenna 36 and the second antenna 42 of one or each radio communication set 32 ​​are, for example, horn antennas.

[0062] A horn antenna is an antenna comprising a diverging duct. The characteristics of the radio waves emitted or detectable by a horn antenna depend in part on the shape of its diverging duct.

[0063] In particular, the polarization direction of radio waves emitted or detectable by a horn antenna depends in part on the shape of its diverging duct.

[0064] The first antenna 36 and the second antenna 42 here respectively comprise a first diverging conduit 46 and a second diverging conduit 48.

[0065] In one variant, the first antenna 36 and the second antenna 42 of one or each radio communication set 32 ​​are, for example, antennas with printed radiating elements.

[0066] A printed radiating element antenna generally comprises a flat antenna support and electrical tracks printed on the antenna support so as to define radiating elements.

[0067] A printed radiating element antenna generally has an emission / reception axis substantially perpendicular to the antenna support on which the radiating elements are arranged.

[0068] In one embodiment, the communication device 10 is configured for simultaneous bidirectional communication, i.e. to be able to transmit data simultaneously from the accessory 12 to the headset support 18 and from the headset support 18 to the accessory 12. This is referred to as "full duplex" communication according to English terminology.

[0069] The communication device 10 includes, for example, a first radio communication set 32 ​​configured to transmit data from the accessory 12 to the helmet support 18 (at the top in [Fig.2]) and a second radio communication set 32 ​​configured to transmit data from the helmet support 18 to the accessory 12 (at the bottom in [Fig.2]), the first radio communication set 32 ​​and the second radio communication set 32 ​​being distinct.

[0070] The communication device 10 thus defines two distinct radio communication channels, which are used to communicate each in a respective direction of communication.

[0071] In one embodiment, the first antennas 36 of the two radio communication sets 32 are arranged side by side on the accessory 12 in such a way that their transmission / reception axes A1 are substantially parallel and / or the second antennas 42 of the two radio communication sets 32 are arranged side by side on the support 18 in such a way that their transmission / reception axes A2 are substantially parallel.

[0072] Alternatively, the first 36 antennas of the two radio communication assemblies 32 are arranged in such a way that their transmission / reception axes A1 make a non-zero angle between them and / or the second antennas 42 of the two radiocommunication sets 32 are arranged on the support 18 in such a way that their transmission / reception axes A2 make a non-zero angle between them.

[0073] Transmission / reception axes A1, A2 of first antennas 36 or second antennas 42 of separate communication sets making non-nuisance angles between them can allow compact arrangements to be made.

[0074] In a particular embodiment, as illustrated in [Fig.2], the transmit / receive axes Al, A2 of the first antenna 36 and the second antenna 42 of each radio communication set 32 ​​are aligned, and the transmit / receive axes Al, A2 of the first radio communication set 32 ​​are parallel to the transmit / receive axes Al, A2 of the second radio communication set 32.

[0075] Preferably, the antennas of the first communication assembly 32 are configured for the transmission of radio waves having a first polarization direction PI, and the antennas of the second radio communication assembly 32 are configured for the transmission of radio waves having a second polarization direction P2 different from the first polarization direction PI. The first polarization direction PI and the second polarization direction P2 form a non-zero angle with each other.

[0076] This helps to limit interference between the first radio communication set 32 ​​and the second radio communication set 32.

[0077] The first polarization direction PI and the second polarization direction P2 are preferably orthogonal.

[0078] This minimizes interference between the first radio communication set 32 ​​and the second radio communication set 32 ​​arranged side by side, in particular with first antennas 36 having parallel transmission / reception axes A1 and / or second antennas 36 having parallel transmission / reception axes A2.

[0079] In a particular embodiment, as illustrated in [Fig. 2], the transmit / receive axes Al, A2 of the first antenna 36 and the second antenna 42 of each radio communication set 32 ​​are aligned, the transmit / receive axes Al, A2 of the first radio communication set 32 ​​are parallel to the transmit / receive axes Al, A2 of the second radio communication set 32, the first polarization direction PI is perpendicular to the aligned transmit / receive axes Al, A2 of the antennas of the first radio communication set 32 ​​and lies in the plane of [Fig. 2], and the second polarization direction P2 is perpendicular to the aligned transmit / receive axes Al, A2 of the antennas of the second radio communication set 32 ​​and perpendicular to the plane of the [Fig.2].

[0080] Each radio communication set 32 ​​is configured to perform short-range communication, in particular communication with a range of less than 100 mm, in particular a range of less than 50 mm, in particular a range of less than 20 mm, preferably a range of less than 10 mm.

[0081] This promotes the discretion of the radio communication assembly 12, by limiting the risk of detection, particularly in military applications.

[0082] Each radio communication set 32 ​​is configured to carry out amplitude modulation communication of a carrier, the carrier having a frequency between 20 GHz and 100 GHz, in particular a frequency between 40 GHz and 80 GHz, in particular a frequency between 57 GHz and 71 GHz.

[0083] In one particular embodiment, the carrier has a frequency of 60 GHz.

[0084] The electrical power consumed for the implementation of this type of radiocommunication is low, which promotes the autonomy and miniaturization of the whole.

[0085] The radio power emitted during the implementation of this type of radiocommunication is low, which promotes discretion and limits the risks of detection.

[0086] Accessory 12 includes an accessory electronic module 50 configured for data processing and electrical system 16 includes a headset electronic module 52 configured for data processing, the accessory electronic module 50 and the headset electronic module 52 being configured to exchange data via the communication device 30.

[0087] The accessory electronic module 50 and the headset electronic module 52 are, for example, each provided in the form of a programmable logic component, in particular in the form of a programmable logic gate network (or FPGA for "Field Programmable Gate Array" according to English terminology).

[0088] Alternatively, one or each of the accessory electronic module 50 and the helmet electronic module 52 is provided in the form of an electronic processing unit comprising a processor, a memory and a software application comprising code instructions that can be recorded in memory and executed by the processor.

[0089] Alternatively, one or each of the accessory electronic module 50 and the helmet electronic module 52 is provided in the form of a specific integrated circuit (or ASIC for "Application Specified Integrated Circuit" according to English terminology).

[0090] The accessory electronic module 50 is configured for example to receive data from one or more electrical devices of the accessory 12 and / or to send data to one or more electrical devices of the accessory 12.

[0091] In the case of an accessory 12 such as night vision binoculars, the electrical devices of the accessory 12 include, for example, an image sensor 54 configured to capture images of a scene in front of the accessory 12 and an image display 56 configured to display images so that they are visible to the user wearing the helmet 14 when the accessory 12 is mounted on the helmet 14 using the mounting system 10.

[0092] The accessory electronic module 50 is configured for example to receive the images captured by the image sensor 54, to transmit the images captured by the image sensor 54 to the helmet electronic module 52 via the communication device 30, to receive data from the helmet electronic module 52 via the communication device 30 and to control the display of images on the image display 56, the images including for example a reproduction of the scene calculated from the images captured by the image sensor 54 and optionally data received from the helmet electronic module 52, for example augmented reality data.

[0093] The electrical system 16 is for example linked to a communication system 58, for example a user-carried communication system 58, the communication system 58 enabling communication with another user or a control center, for example for sending data to another user and / or the control center and / or for receiving data from the other user and / or the control center, for example data to be displayed on the image display 56, in particular augmented reality data.

[0094] Advantageously, the mounting system 10 includes an electrical connection device 60 configured for the electrical connection of the accessory 12 and the helmet support 18.

[0095] The electrical connection device 60 includes first electrical contacts 62 provided on the accessory 12, more particularly on the accessory interface 22, and second electrical contacts 64 provided on the headset support 18, more particularly on the support interface 24.

[0096] The first electrical contacts 62 come into contact with the second electrical contacts 64 due to the mounting of the accessory 12 on the helmet support 18, more particularly due to the connection of the accessory interface 22 and the support interface 24.

[0097] In one example, each first electrical contact 62 comes into contact with a second electrical contact 64 due to the mounting of the accessory 12 on the headphone support 18, more particularly due to the connection of the accessory interface 22 and the support interface 24.

[0098] Each first electrical contact 62 has a second electrical contact 64 counterpart with which it comes into contact due to the mounting of accessory 12 on helmet support 18.

[0099] When the fastening assembly 20 is configured for translational engagement along a mounting direction M, preferably the electrical connection device 60 is configured so that each first electrical contact 62 comes into contact with the corresponding second electrical contact 64 along the mounting direction M.

[0100] In one embodiment, in each pair of electrical contacts formed by a first electrical contact 62 and a second corresponding electrical contact 64, one is fixedly mounted on the corresponding interface between the accessory interface 22 and the support interface 24, the other being slidably mounted along a sliding direction C on the corresponding interface between the accessory interface 22 and the support interface 24.

[0101] When the fastening assembly 20 is configured for translational engagement along a mounting direction M, the sliding direction C of each sliding electrical contact is preferably parallel to the mounting direction M.

[0102] In one embodiment, each first electrical contact 62 is fixed on the accessory 12, more particularly on the accessory interface 22, and each second electrical contact 64 is sliding on the headphone support 18, more particularly on the support interface 24.

[0103] Alternatively, the configuration is reversed: each first electrical contact 62 is slidably mounted on the accessory 12, more particularly on the accessory interface 22, and each second electrical contact 64 is fixedly mounted on the headset support 18, more particularly on the support interface 24.

[0104] Preferably, the electrical connection device 60 includes a sealing assembly 66 comprising at least one sealing gasket configured to ensure a seal between the accessory 12 and the helmet support 18, more particularly between the accessory interface 22 and the support interface 24, around the first electrical contacts 62 and the second electrical contacts 64 when the electrical connection device 60 is plugged in, preferably along a closed line.

[0105] The electrical connection device 60 includes, for example, a first sealing gasket 68 disposed on the accessory interface 22 around the first electrical contacts 62 and intended to bear against a sealing surface 70 located on the support interface 24, preferably along a closed line.

[0106] When the fastening assembly 20 is configured for engagement by translation along a mounting direction M, preferably, the first sealing gasket 68 is configured to bear against the sealing surface 70 of the helmet support 18 following the mounting direction M.

[0107] As an alternative or as an option, the electrical connection device 60 includes, for example, a sealing gasket 72 provided on the helmet support 18 around the second electrical contacts 64 and intended to bear against a sealing surface 74 provided on the accessory 12, preferably along a closed line.

[0108] When the fastening assembly 20 is configured for translational engagement along a mounting direction M, preferably the sealing gasket 72 is configured to bear against the sealing surface 74 of the accessory 12 along the mounting direction M.

[0109] The electrical connection device 60 is for example configured for the transmission of a power supply signal from the electrical system 16 carried by the helmet 14 to the accessory 12.

[0110] Optionally, the electrical connection device 60 is configured for example for the transmission of data signals between the accessory 12 and the electrical system 16 carried by the helmet 14.

[0111] The electrical system 16 includes, for example, a battery 78 for powering the accessory 12, and possibly the electrical system 16 itself. The battery 78 is connected to the accessory 12 via the electrical connection device 60.

[0112] The electrical system 16 carried by the helmet 14 includes, for example, a remote box 80 connected by a link cable 82 to the helmet support 18. The remote box 80 contains, for example, the helmet electronic module 54 and the battery 78.

[0113] The connecting cable 82 is for example configured for data transmission between the headset support 18 and the remote unit 80 and / or the transmission of a power signal from the remote unit 80 to the accessory 12.

[0114] The connecting cable 82 has a proximal end 82A connected to the remote housing 80 and a distal end 82B connected to the headphone support 18, preferably removably via a connector 84 comprising a cable plug 86 disposed at the distal end 82B and a support plug 88 disposed on the headphone support 18.

[0115] The support socket 88 is for example arranged laterally on one side of the headphone support 18, in such a way that the connecting cable 82 connected to the headphone support 18 runs from the rear of the headphone 12 to the front of the headphone 12 by passing over the side of the headphone 14.

[0116] Alternatively, the support socket 88 is for example arranged laterally on the top of the headphone support 18, in such a way that the connecting cable 82 connected to the headphone support 18 runs from the rear of the headphone 12 to the front of the headphone 12 via the top of the headphone 12.

[0117] The connecting cable 82 includes, for example, communication wires for the transmission of communication signals and power supply wires for the transmission of the power supply signal.

[0118] Preferably, the mounting system 10 is configured to perform communication via the link cable 82 by differential low-voltage transmission (or SLVS for "Scalable Low-Voltage Signaling" according to English terminology).

[0119] In such a communication mode, the data is encoded by a voltage difference between two communication wires. Thus, only two communication wires are needed in the connecting cable 82, which promotes lightness and miniaturization.

[0120] The accessory 12, and in particular the accessory interface 22, includes for example an electrical power supply module 90 to which the first electrical contacts 62 are connected and which ensures the distribution of electrical energy to the electrical components of the accessory 12 and the mounting system 10, in particular to the first sub-assembly 34 of each radio communication assembly 32.

[0121] The electrical system 16 includes, for example, an electrical power supply module 92 configured to ensure the distribution of electrical energy to the electrical components of the electrical system 16 and the mounting system 10 from the battery 78, in particular to the second subset 40 of each radio communication set 32 ​​of the mounting system 10.

[0122] Thanks to the invention, it is possible to obtain a mounting system 10 of an accessory 12 on a helmet 14 which allows a transmission of data signals between the accessory 12 and an electrical system 16 carried by the helmet 14, the accessory 12 being able to be easily mounted on the helmet 14, the mounting system 10 being reliable and robust.

[0123] The contactless radio communication between the accessory 12 and the electrical system 16 carried by the helmet 14 is relatively insensitive to dust and water. It does not require a high level of dust and / or water resistance.

[0124] Radio communication between the accessory 12 and the helmet support 18 fixed one on top of the other can be achieved using electrical power and emitting low radio power, which promotes autonomy, miniaturization and discretion.

[0125] Radio communication can be carried out in full-duplex, which allows for the exchange of data signals with a high rate, compatible for example with the transmission of high, very high resolution or ultra-high resolution images, and / or augmented reality data to be displayed on high or very high resolution or ultra-high resolution images.

[0126] The invention is not limited to the embodiments and variants discussed above. Other embodiments and variants are conceivable.

[0127] Radio communication between accessory 12 and helmet support 18 is not necessarily carried out in full-duplex.

[0128] In one variant, the communication device 10 includes a radio communication set 32 ​​configured for transmitting data from the accessory 12 to the helmet support 18 and for transmitting data from the helmet support 18 to the accessory 12.

[0129] In particular, the first radio module 38 of the radio communication assembly 32 is a transceiver, and the second radio module 44 of the radio communication assembly 32 is a transceiver.

[0130] Helmet 14 is not necessarily a military helmet. It can be a protective helmet for an operator, for example a construction site operator or an industrial site operator, or a protective helmet for practicing a sport, for example for practicing an aeronautical sport, such as paragliding, climbing or cycling.

[0131] Accessory 12 is not necessarily night vision binoculars. It may be binoculars (i.e., day vision binoculars), glasses for displaying data in front of the user's eyes, or a monocle for displaying data in front of one of the user's eyes.

Claims

Demands

1. A mounting system for an accessory (12) on a helmet (14), the mounting system comprising a helmet bracket (18) configured to be mounted on the helmet (14), a fastening assembly (20) for the removable attachment of the accessory (12) to the helmet bracket (18), and a wireless communication device (30) comprising at least one radio communication assembly (32) configured for the transmission of radio signals between the helmet bracket (18) and the accessory (12), each radio communication assembly (32) having a first antenna (36) disposed on the accessory (12) and a second antenna (42) disposed on the helmet bracket (18), wherein each radio communication assembly (32) is configured to perform short-range communication with a range of less than 50 mm.

2. Mounting system according to claim 1, wherein the first antenna (36) and the second antenna (42) of each radio communication assembly (32) are directional and pointed towards each other when the accessory (12) is mounted on the helmet support (18).

3. Mounting system of claim 1 or claim 2, in the first antenna (36) and the second antenna (42) of each radio communication assembly (32) are of the horn antenna type or printed radiating element antenna.

4. Mounting system according to any one of the preceding claims, comprising two separate radio communication assemblies (32), one configured for transmitting radio communication signals from the helmet support (18) to the accessory (12) and the other configured for transmitting radio communication signals from the accessory (12) to the helmet support (18).

5. Mounting system according to claim 4, wherein the first antenna (36) and the second antenna (42) of one of the two radio communication assemblies (32) are configured for sending and / or receiving radio waves having a first polarization direction, the first antenna (36) and the second antenna (42) of the other of the two radio communication assemblies (32) being configured for sending and / or receiving radio waves having a second polarization direction distinct from the first polarization direction, and preferably orthogonal to the first polarization direction.

6. Mounting system according to any one of the preceding claims, wherein each radio communication assembly (32) is configured for the transmission of radio signals by amplitude modulation of a carrier.

7. Mounting system according to any one of the preceding claims, wherein the carrier has a frequency between 57 GHz and 71 GHz, in particular a 60 GHz carrier.

8. Mounting system according to any one of the preceding claims, comprising at least one electrical connection device (60), each electrical connection device (60) comprising first contacts (62) disposed on the accessory (12) and second contacts (64) disposed on the helmet support (18), the first contacts (62) coming into contact with the second contacts (64) due to the mounting of the accessory (12) on the helmet support (18).

9. Mounting system according to claim 8, wherein the first contacts (62) and the second contacts (64) comprise fixed contact pads and movable contact pistons, each contact piston coming into contact with a respective contact pad due to the mounting of the accessory (12) on the helmet support (18).

10. Mounting system according to claim 8 or 9, wherein the first contacts (62) and the second contacts (64) are arranged to come into contact along a mounting direction (M) of the accessory (12) on the helmet support (18) by translation.

11. Mounting system according to any one of claims 8 to 10, comprising a sealing device (66) configured to ensure sealing of the electrical connection device (60) when the first contacts (62) are in contact with the second contacts (64), the sealing device (66) comprising at least one sealing gasket intended to bear against a corresponding sealing surface, preferably due to the mounting of the accessory (12) on the helmet support (18).

12. Mounting system according to any one of the preceding claims, wherein each radio communication assembly (32) is configured to achieve short-range communication with a range of less than 20 mm, preferably a range of less than 10 mm.

13. Mounting system according to any one of the preceding claims, wherein the communication device (30) is configured for simultaneous two-way communication.

14. Night vision system comprising night vision binoculars and a mounting system (10) according to any one of the preceding claims for the removable mounting of the night vision binoculars on a helmet (12).

Images