System for mounting an accessory on a helmet for data communication

Abstract

The mounting system comprises a helmet support (18) configured to be mounted on the helmet (14), a fixing assembly (20) for removably fixing the accessory (12) on the helmet support (18), and a wireless communication device (30) comprising at least one radiocommunication assembly (32) configured for the transmission of radio signals between the helmet support (18) and the accessory (12), each radiocommunication assembly (32) having a first antenna (36) arranged on the accessory (12) and a second antenna (42) arranged on the helmet support (18).

Description

[0001] DESCRIPTION

[0002] System for mounting an accessory on a helmet enabling data communication

[0003] The present invention relates to the field of systems for removable mounting of an accessory on a helmet.

[0004] To use night vision goggles while wearing a helmet, a removable mounting system may be provided that includes a helmet mount attached to the helmet and selectively allows the night vision goggles to be attached to the helmet mount for use or the night vision goggles to be detached from the helmet mount when not in use.

[0005] The night vision binoculars are for example associated with an electrical system arranged on the helmet and configured to supply the night vision binoculars with electrical energy and / or to exchange data signals with the night vision binoculars, in particular to receive images acquired by the night vision binoculars and / or to send images to be displayed on the night vision binoculars and / or additional data to be integrated into the images displayed by the night vision binoculars, in particular augmented reality data.

[0006] It is necessary to ensure the connection of night vision binoculars to such an electrical system.

[0007] To do this, it is possible to equip the electrical system with a cable fitted with a cable socket complementary to a binocular socket provided on the night vision binoculars.

[0008] 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 socket.

[0009] Another solution is to provide a connection device comprising a headset connector provided on the headset mount and a binocular connector provided on the night vision binoculars, the binocular connector engaging the headset connector due to the mounting of the night vision binoculars on the headset connector.

[0010] The helmet connector and the binocular connector are for example provided with electrical contacts coming into contact with each other due to the mounting of the night vision binoculars on the helmet mount. It is desirable to have a mounting system that allows the connection of the night vision binoculars to an electrical system arranged on the helmet in a manner that is easy for the user while ensuring a good connection and good sealing against water and / or dust.

[0011] One of the aims of the invention is to propose a removable mounting system for an accessory on a helmet allowing a connection between the accessory and an electrical system arranged on the helmet, which is easy to use and robust.

[0012] 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 fixing assembly for the removable fixing of the accessory on the helmet support, and a wireless communication device comprising at least one radiocommunication assembly configured for the transmission of radio signals between the helmet support and the accessory, each radiocommunication assembly having a first antenna arranged on the accessory and a second antenna arranged on the helmet support.

[0013] Each radio communication set enables an exchange of data signals between the accessory and the headset holder. This allows, for example, the accessory to transmit data to the headset holder or to receive data transmitted by the headset holder.

[0014] Each radio communication set is robust. In particular, each radio communication set is inherently resistant to dust and / or water, with data transmission occurring without requiring contact between electrical contacts.

[0015] According to particular embodiments, the mounting system comprises one or more of the following optional features, taken individually or in any technically possible combination:

[0016] - the first antenna and the second antenna of each radio communication assembly are directional and pointed towards each other when the accessory is mounted on the helmet support;

[0017] - the first antenna and the second antenna of each radiocommunication assembly are of the horn antenna type or antenna with printed radiating elements;

[0018] - the mounting system comprises two separate radiocommunication assemblies, one configured for transmitting radiocommunication signals from the helmet support to the accessory and the other configured for transmitting radiocommunication signals from the accessory to the helmet support; - the first antenna and the second antenna of one of the two radiocommunication assemblies are configured for sending and / or receiving radio waves having a first polarization direction, the first antenna and the second antenna of the other of the two radiocommunication assemblies 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;

[0019] - each radiocommunication set 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 comprises 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 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 on the helmet support;

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

[0024] - the mounting system comprises a sealing device configured to ensure 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 provided to bear on a homologous 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 removably mounting the night vision binoculars on a helmet.

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

[0027] - Figure 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] - Figure 2 is a diagram illustrating the electrical system, the accessory and the mounting system;

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

[0030] As illustrated in Figure 1, a mounting system 10 is configured for removably mounting 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] The 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 arranged 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 mount 18 configured to be mounted on the helmet 14 and an attachment assembly 20 for removably attaching the accessory 12 to the helmet mount 18.

[0036] The attachment assembly 20 comprises, for example, an accessory interface 22 arranged on the accessory 12 and a support interface 24 arranged 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 engaged with each other) for securing the accessory 12 to the helmet support 18, and disengaged from each other for dismounting the accessory 12 from the helmet support 18.

[0038] The attachment assembly 20 is preferably provided for rapid 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 and disengaged from each other by translation along a mounting direction M as illustrated by an arrow in Figure 2. In an exemplary embodiment, one of the accessory interface 22 and the support interface 24 comprises a tang and the other a groove, the tang fitting into the groove for engagement of the accessory interface 22 and the support interface 24.

[0040] The tenon and groove are, for example, profiled along the assembly direction M and have, for example, complementary dovetail profiles.

[0041] The attachment assembly 20 preferably includes a locking device (not shown), for example by snap-fastening, for maintaining the accessory interface 22 and the support interface 24 engaged with each other.

[0042] The locking device is for example configured to be unlocked by the user, for example by pressing an unlock button or by exerting a disengagement force sufficient to separate the accessory interface 22 and the support interface 24 against the locking device.

[0043] As shown schematically in Figure 2, the mounting system 10 includes a wireless communication device 30 configured to provide wireless transmission of data signals between the accessory 12 mounted on the helmet 14 and the electrical system 16 disposed on the helmet 14.

[0044] 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.

[0045] Radiocommunication means communication by transmission of radio waves in a medium.

[0046] The communication device 30 comprises for example at least one radiocommunication assembly 32 for the transmission of radiocommunication signals between the accessory 12 and the helmet support 18, each radiocommunication assembly 32 comprising:

[0047] - a first subassembly 34 arranged 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

[0048] - a second subassembly 40 arranged on the headset support 18, in particular on the headset interface 24, the second subassembly 40 comprising a second radio antenna 42 and a second radio module 44 configured to transmit and / or receive radio waves via the second antenna 42. The first radio module 38 is a transmitter configured to transmit radio waves via the first antenna 36, ​​a receiver configured to receive radio waves via the first antenna 36, ​​or a transceiver configured to transmit and receive radio waves via the first antenna 36.

[0049] The second radio module 44 is a transmitter configured to transmit radio waves via the second antenna 42, a receiver configured to receive radio waves via the second antenna 42, or a transceiver configured to transmit and receive radio waves via the second antenna 42.

[0050] Each radio communication assembly 32 is configured for the transmission of radio communication signals from the accessory 12 to the helmet support 18, in which case the first sub-assembly 34 is configured for the transmission of radio waves to the second sub-assembly 40 and / or for the transmission of radio communication signals from the helmet support 18 to the accessory 12, in which case the second sub-assembly 40 is configured for the transmission of radio waves to the first sub-assembly 34.

[0051] 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.

[0052] The first antenna 36 and the second antenna 42 of each radiocommunication assembly 32 are, for example, directional antennas.

[0053] By "directional antenna" is meant 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.

[0054] Even if the antennas are directional, depending on the transmission pattern of the first antenna 36 and / or the transmission pattern of the second antenna 42 of each radio communication assembly 32, it is possible to configure the communication device 30 in such a way that in the mounted state, the transmission / reception axis A1 of the first antenna 36 and the transmission / reception axis A2 of the second antenna 42 are aligned or form a non-zero angle between them, all allowing the transmission of radio signals from one antenna to the other.

[0055] Preferably, in the mounted state, the transmission / reception axes A1, A2 of the first antenna 36 and of the second antenna 42 of each radiocommunication assembly 32 make an angle between them of between 0° and 120°. In a particular exemplary embodiment, as illustrated in Figures 2 and 3, in the mounted state the transmission / reception axes A1, A2 of the first antenna 36 and the second antenna 42 of one or each radiocommunication assembly 32 make a substantially zero angle between them and are therefore substantially aligned.

[0056] Alternatively, in the mounted state, the transmission / reception axes A1, A2 of the first antenna 36 and the second antenna 42 of one or each radiocommunication assembly 32 make a non-zero angle between them.

[0057] The provision of a non-zero angle between the transmission / reception axes A1, A2 of the first antenna 36 and the second antenna 42 of the same radiocommunication assembly 32 can be used to achieve a compact arrangement.

[0058] The first antenna 36 and the second antenna 42 of one or each radiocommunication assembly 32 are for example horn antennas.

[0059] A horn antenna is an antenna that includes a diverging duct. The characteristics of the radio waves emitted or detectable by a horn antenna depend partly on the shape of its diverging duct.

[0060] In particular, the direction of polarization of radio waves emitted or detectable by a horn antenna depends partly on the shape of its diverging duct.

[0061] The first antenna 36 and the second antenna 42 here respectively comprise a first diverging conduit 46 and a second diverging conduit 48.

[0062] In a variant, the first antenna 36 and the second antenna 42 of one or each radiocommunication assembly 32 are for example antennas with printed radiating elements.

[0063] A printed radiating element antenna typically comprises a planar antenna support and electrical traces printed on the antenna support to define radiating elements.

[0064] An antenna with printed radiating elements generally has a transmission / reception axis substantially perpendicular to the antenna support on which the radiating elements are arranged.

[0065] In an exemplary embodiment, the communication device 10 is configured for simultaneous two-way 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 then referred to as “full duplex” communication according to English terminology.

[0066] The communication device 10 comprises for example a first radio communication assembly 32 configured to transmit data from the accessory 12 to the helmet support 18 (at the top in Figure 2) and a second radio communication assembly 32 configured to transmit data from the helmet support 18 to the accessory 12 (at the bottom in Figure 2), the first radio communication assembly 32 and the second radio communication assembly 32 being distinct.

[0067] The communication device 10 thus defines two separate radio communication channels, which are each used to communicate in a respective communication direction.

[0068] In an exemplary embodiment, the first antennas 36 of the two radiocommunication assemblies 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 radiocommunication assemblies 32 are arranged side by side on the support 18 in such a way that their transmission / reception axes A2 are substantially parallel.

[0069] Alternatively, the first antennas 36 of the two radiocommunication 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 assemblies 32 are arranged on the support 18 in such a way that their transmission / reception axes A2 make a non-zero angle between them.

[0070] Transmission / reception axes A1, A2 of first antennas 36 or second antennas 42 of separate communication sets making non-null angles between them can make it possible to produce compact arrangements.

[0071] In a particular exemplary embodiment, as illustrated in Figure 2, the transmission / reception axes A1, A2 of the first antenna 36 and of the second antenna 42 of each radiocommunication assembly 32 are aligned, and the transmission / reception axes A1, A2 of the first radiocommunication assembly 32 are parallel to the transmission / reception axes A1, A2 of the second radiocommunication assembly 32.

[0072] Preferably, the antennas of the first communication assembly 32 are configured for the transmission of radio waves having a first polarization direction P1, 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 P1. The first polarization direction P1 and the second polarization direction P2 make a non-zero angle between them.

[0073] This makes it possible to limit interference between the first radiocommunication set 32 ​​and the second radiocommunication set 32. The first polarization direction P1 and the second polarization direction P2 are preferably orthogonal.

[0074] This makes it possible to minimize interference between the first radiocommunication assembly 32 and the second radiocommunication assembly 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.

[0075] In a particular embodiment, as illustrated in Figure 2, the transmission / reception axes A1, A2 of the first antenna 36 and of the second antenna 42 of each radiocommunication assembly 32 are aligned, the transmission / reception axes A1, A2 of the first radiocommunication assembly 32 are parallel to the transmission / reception axes A1, A2 of the second radiocommunication assembly 32, the first polarization direction P1 is perpendicular to the aligned transmission / reception axes A1, A2 of the antennas of the first radiocommunication assembly 32 and located in the plane of Figure 2, and the second polarization direction P2 is perpendicular to the aligned transmission / reception axes A1, A2 of the antennas of the second radiocommunication assembly 32 and perpendicular to the plane of Figure 2.

[0076] Each radio communication assembly 32 is configured to perform short-distance 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.

[0077] This promotes the discretion of the radiocommunication set 12, by limiting the risk of detection, particularly in military applications.

[0078] Each radio communication assembly 32 is configured to carry out communication by amplitude modulation 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.

[0079] In a particular embodiment, the carrier has a frequency of 60 GHz.

[0080] The electrical power consumed for the implementation of this type of radio communication is low, which favors the autonomy and miniaturization of the whole.

[0081] The radioelectric power emitted during the implementation of this type of radiocommunication is low, which promotes discretion and limits the risks of detection. The accessory 12 comprises an accessory electronic module 50 configured for data processing and the electrical system 16 comprises 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.

[0082] 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 array (or FPGA for “Field Programmable Gate Array” according to English terminology.

[0083] Alternatively, one or each of the accessory electronic module 50 and the headset electronic module 52 is provided as an electronic processing unit comprising a processor, a memory, and a software application comprising code instructions recordable in the memory and executable by the processor.

[0084] Alternatively, one or each of the accessory electronic module 50 and the headset electronic module 52 is provided in the form of a specific integrated circuit (or ASIC for “Application Specific Integrated Circuit” according to English terminology).

[0085] The electronic accessory module 50 is for example configured 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.

[0086] In the case of an accessory 12 such as night vision binoculars, the electrical devices of the accessory 12 comprise, for example, an image sensor 54 configured to capture images of a scene present 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.

[0087] The accessory electronic module 50 is for example configured to receive the images captured by the image sensor 54, to transmit the images captured by the image sensor 54 to the headset electronic module 52 via the communication device 30, to receive data from the headset electronic module 52 via the communication device 30 and to control the display of images on the image display 56, the images comprising for example a reproduction of the scene calculated from the images captured by the image sensor 54 and, optionally, data received from the headset electronic module 52, for example augmented reality data.

[0088] The electrical system 16 is for example linked to a communication system 58, for example a communication system 58 worn by the user, the communication system 58 allowing communication with another user or a control center, for example for sending data to another user and / or to the control center and / or for receiving data from the other user and / or from the control center, for example data to be displayed on the image display 56, in particular augmented reality data.

[0089] Advantageously, the mounting system 10 comprises an electrical connection device 60 configured for the electrical connection of the accessory 12 and the helmet support 18.

[0090] The electrical connection device 60 comprises first electrical contacts 62 provided on the accessory 12, more particularly on the accessory interface 22, and second electrical contacts 64 provided on the helmet support 18, more particularly on the support interface 24.

[0091] 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 engagement of the accessory interface 22 and the support interface 24.

[0092] In one example, each first electrical contact 62 contacts a second electrical contact 64 due to the mounting of the accessory 12 on the helmet support 18, more particularly due to the engagement of the accessory interface 22 and the support interface 24.

[0093] Each first electrical contact 62 has a second homologous electrical contact 64 with which it comes into contact due to the mounting of the accessory 12 on the helmet support 18.

[0094] When the fixing assembly 20 is configured for translational engagement along a mounting direction M, preferably, the electrical connection device 60 is configured such that each first electrical contact 62 comes into contact with the second homologous electrical contact 64 along the mounting direction M.

[0095] In an exemplary embodiment, in each pair of electrical contacts formed by a first electrical contact 62 and a second electrical contact 64, one is fixedly mounted on the corresponding interface among the accessory interface 22 and the support interface 24, the other being slidably mounted in a sliding direction C on the corresponding interface among the accessory interface 22 and the support interface 24.

[0096] When the fixing 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. In an exemplary 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 helmet support 18, more particularly on the support interface 24.

[0097] 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 helmet support 18, more particularly on the support interface 24.

[0098] Preferably, the electrical connection device 60 comprises a sealing assembly 66 comprising at least one seal configured to provide 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 engaged, preferably along a closed line.

[0099] The electrical connection device 60 comprises, for example, a first seal 68 arranged on the accessory interface 22 around the first electrical contacts 62 and designed to bear on a sealing surface 70 located on the support interface 24, preferably along a closed line.

[0100] When the fixing assembly 20 is configured for engagement by translation in a mounting direction M, preferably, the first seal 68 is configured to bear on the sealing surface 70 of the helmet support 18 in the mounting direction M.

[0101] Alternatively or optionally, the electrical connection device 60 comprises, for example, a seal 72 provided on the helmet support 18 around the second electrical contacts 64 and provided to bear on a sealing surface 74 provided on the accessory 12, preferably along a closed line.

[0102] When the fixing assembly 20 is configured for engagement by translation in a mounting direction M, preferably, the sealing gasket 72 is configured to bear on the sealing surface 74 of the accessory 12 in the mounting direction M.

[0103] The electrical connection device 60 is for example configured for the transmission of a power supply signal from the electrical system 16 worn by the helmet 14 to the accessory 12.

[0104] Optionally, the electrical connection device 60 is for example configured for the transmission of data signals between the accessory 12 and the electrical system 16 worn by the helmet 14. The electrical system 16 comprises for example a battery 78 for powering the accessory 12, and possibly that of the electrical system 16 itself. The battery 78 is connected to the accessory 12 via the electrical connection device 60.

[0105] The electrical system 16 carried by the helmet 14 comprises, for example, a remote box 80 connected by a connecting cable 82 to the helmet support 18. The remote box 80 contains, for example, the helmet electronic module 54 and the battery 78.

[0106] The connecting cable 82 is for example configured for the transmission of data between the headset support 18 and the remote box 80 and / or the transmission of a power supply signal from the remote box 80 to the accessory 12.

[0107] The connecting cable 82 has a proximal end 82A connected to the remote housing 80 and a distal end 82B connected to the headset support 18, preferably removably via a connector 84 comprising a cable socket 86 disposed at the distal end 82B and a support socket 88 disposed on the headset support 18.

[0108] The support socket 88 is for example arranged laterally on one side of the helmet support 18, such that the connecting cable 82 connected to the helmet support 18 runs from the rear of the helmet 12 to the front of the helmet 12 passing along the side of the helmet 14.

[0109] Alternatively, the support socket 88 is for example arranged on top of the helmet support 18, such that the connecting cable 82 connected to the helmet support 18 runs from the rear of the helmet 12 to the front of the helmet 12 via the top of the helmet 12.

[0110] The connecting cable 82 comprises, for example, communication wires for carrying communication signals and power wires for carrying the power signal.

[0111] Preferably, the mounting system 10 is configured to carry out communication via the connecting cable 82 by low-voltage differential transmission (or SLVS for “Scalable Low-Voltage Signaling” according to English terminology).

[0112] In such a communication mode, the data is encoded by a voltage difference between two communication wires. Thus, only two communication wires are required in the connecting cable 82, which promotes lightness and miniaturization.

[0113] The accessory 12, and in particular the accessory interface 22, comprises 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 of the mounting system 10, in particular to the first sub-assembly 34 of each radiocommunication assembly 32.

[0114] The electrical system 16 comprises 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 of the mounting system 10 from the battery 78, in particular to the second subassembly 40 of each radiocommunication assembly 32 of the mounting system 10.

[0115] Thanks to the invention, it is possible to obtain a mounting system 10 of an accessory 12 on a helmet 14 which allows transmission of given signals between the accessory 12 and an electrical system 16 worn 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.

[0116] The radio communication between the accessory 12 and the electrical system 16 worn by the helmet 14 carried out without contact is little or not sensitive to dust and water. It does not require strong sealing against dust and / or water.

[0117] Radio communication between the accessory 12 and the helmet support 18 fixed to each other can be carried out using electrical power and emitting low radio power, which promotes autonomy, miniaturization and discretion.

[0118] Radio communication can be carried out in full-duplex, which allows an exchange of data signals with a high throughput, 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, very high resolution or ultra-high resolution images.

[0119] The invention is not limited to the exemplary embodiments and variants discussed above. Other exemplary embodiments and other variants are conceivable.

[0120] Radio communication between the accessory 12 and the headset holder 18 is not necessarily carried out in full-duplex.

[0121] In one variant, the communication device 10 comprises a radio communication assembly 32 configured for the transmission of data from the accessory 12 to the headset support 18 and for the transmission of data from the headset support 18 to the accessory 12.

[0122] 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.

[0123] The helmet 14 is not necessarily a helmet for military use. It may be a protective helmet for an operator, for example a construction site operator or an operator of an industrial site, or a protective helmet for the practice of a sport, for example for the practice of an aeronautical sport, such as paragliding, climbing or cycling.

[0124] Accessory 12 is not necessarily night vision binoculars. It may be binoculars (i.e. day vision binoculars), goggles allowing data to be displayed in front of the user's eyes or a monocle allowing data to be displayed in front of one of the user's eyes.

Claims

CLAIMS 1. A system for mounting an accessory (12) on a helmet (14), the mounting system comprising a helmet support (18) configured to be mounted on the helmet (14), a fixing assembly (20) for removably fixing the accessory (12) on the helmet support (18), and a wireless communication device (30) comprising at least one radio communication assembly (32) configured for transmitting radio signals between the helmet support (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 support (18).

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

3. Mounting system according to claim 1 or claim 2, in which the first antenna (36) and the second antenna (42) of each radiocommunication 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 the transmission of radio communication signals from the helmet support (18) to the accessory (12) and the other configured for the transmission of 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 radiocommunication 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 radiocommunication 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. A mounting system according to any preceding claim, 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. A mounting system according to any preceding claim, comprising at least one electrical connection device (60), each electrical connection device (60) comprising first contacts (62) arranged on the accessory (12) and second contacts (64) arranged 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. The mounting system of claim 8, wherein the first contacts (62) and the second contacts (64) comprise fixed contact pads and movable contact pistons, each contact piston contacting 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 provided to bear on a homologous sealing surface, preferably due to the mounting of the accessory (12) on the helmet support (18).

12. A night vision system comprising night vision goggles and a mounting system (10) according to any preceding claim for removably mounting the night vision goggles on a helmet (12).

Images