CN107432523A - Multifunctional helmet intercom and system and application method - Google Patents
Multifunctional helmet intercom and system and application method Download PDFInfo
- Publication number
- CN107432523A CN107432523A CN201710856042.9A CN201710856042A CN107432523A CN 107432523 A CN107432523 A CN 107432523A CN 201710856042 A CN201710856042 A CN 201710856042A CN 107432523 A CN107432523 A CN 107432523A
- Authority
- CN
- China
- Prior art keywords
- helmet
- intercom
- helmet body
- control system
- multifunctional
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/04—Parts, details or accessories of helmets
- A42B3/30—Mounting radio sets or communication systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/3827—Portable transceivers
- H04B1/385—Transceivers carried on the body, e.g. in helmets
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
- H04W4/10—Push-to-Talk [PTT] or Push-On-Call services
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/3827—Portable transceivers
- H04B1/385—Transceivers carried on the body, e.g. in helmets
- H04B2001/3866—Transceivers carried on the body, e.g. in helmets carried on the head
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Telephone Set Structure (AREA)
- Helmets And Other Head Coverings (AREA)
Abstract
The invention discloses a kind of multifunctional helmet intercom and system and application method, multifunctional helmet intercom is to be used as shell using the helmet, the helmet and intercom part are combined, specifically include intercommunication mainboard, power supply, fan, loudspeaker, antenna and interface board, inner helmet center is fan, power supply is located at the both sides of fan, and fan is connected with control system；Loudspeaker are located at the both sides of the helmet, are easy to ear to hear.Antenna is located at helmet top, is advantageous to the transmitting-receiving of signal.Helmet body rear end is provided with interface board, there is wireless PTT receiving circuits, data-interface and adjusting knob above；Interface plate surface is covered with the silica shell of striped, and silica shell both sides are provided with adjusting knob, and the case nose of helmet body is additionally provided with a lug boss to stretch out；LED illuminating parts are installed in lug boss.The present invention neither influences the factors such as outward appearance, the weight of the helmet, does not also reduce the performance of the helmet, suitable for various working environments, has very high practicality.
Description
Technical field
The present invention relates to a kind of intercom, more particularly to a kind of multifunctional helmet intercom and system and application method.
Background technology
In many occasions, the consideration based on safety requires personnel's safe wearing cap, and some posies are gone back to connect each other
Intercom need to be worn, traditional mode is that intercom is hung on one's waist or be placed in pocket and does it to vacate both hands by worker
His thing, the operation intercom that need to be stopped when intercom works on hand, production efficiency is low, proposes improvement later
Part, two earpiece configuration is set, earphone is placed on two ears and is used for carrying out real-time reception, but two earpiece configuration is using
When it is inconvenient, the length of earphone cord is longer, to extraneous perceptibility when easily causing interference at work, and wearing earphone
Decline, if the dangerous the reaction time that occurs is short, easily causes the injures and deaths of personnel, be finally that the fidelity of sound is asked during intercommunication
Existing defects in topic, if under the environment such as noisy or strong wind, language described in user is not easy to be caught in, and other intercoms make
User, which can not just understand, learns user's idea to be expressed, so as to cause communication disorder, influences operating efficiency.
The content of the invention
For weak point present in above-mentioned technology, the present invention provides a kind of more work(applied widely, easy to use
Can helmet intercom.
To achieve these goals, the invention discloses a kind of multifunctional helmet intercom, including helmet body and intercom
Device and PTT devices, the helmet body is interior to be provided with interphone device, and the interphone device is located on the inner side of the helmet body
Portion, interphone device include power supply, control system and fan, and the power supply shares two and positioned at the both sides of the fan, wind
One end of fan is connected with control system；Helmet body rear end is provided with interface card, data-interface and adjusting knob；The interface electricity
Road plate is provided with wireless PTT receiving circuits, and the data-interface includes USB interface and earphone interface, the data-interface surface
The streaky silica shell of the tool of covering one, the silica shell both sides are provided with adjusting knob, and the adjusting knob includes volume adjusting
Knob and frequency range adjusting knob, interface card and intercom control system are connected using wire, the shell of helmet body
Front end is additionally provided with a lug boss；Illuminating part is installed in the lug boss, the illuminating part is located at lug boss front end, while
The front end of lug boss is provided with light adjusting knob, and the luminous intensity of the light adjusting knob regulation illuminating part is described luminous
Part is LED.
Wherein, the helmet body interior forward end is provided with plastic cement cover plate, in the cavity that the plastic cement cover plate and helmet body are formed
Provided with switching circuit board, the switching circuit board is provided with fan swicth and illuminating part switchs.
Wherein, the corner of the power supply of the interphone device, control system and fan is equipped with fixing hole, will by screw
Each component of interphone device is fixed on helmet body, and the inner surface of front end is additionally provided with a plurality of wire casing in the helmet body,
Wire is installed in the wire casing, the wire is fixed on the helmet body, and a plurality of sheet metal is additionally provided with the wire casing,
It is affixed on inside wire casing, the sheet metal forms dual-mode antenna.
Wherein, the helmet body both sides are provided with left earflap and right earflap, are filled between the helmet body case and left earflap
There is left speaker, right loudspeaker is housed between the helmet body and right earflap, the loudspeaker passes through wire and control system phase
Even, the left earflap connects left fixing band, and the right earflap connects right fixing band, and the left fixing band uses with right fixing band blocks
Son connection, inner helmet are provided with software inner liner.
Wherein, the software inner liner includes air bag and massage cushion, and intercom dress is close in described air bag one end
Put, the other end is connected with massage cushion, and the massage cushion is an arcuate structure, agrees with helmet body interior shape.
Wherein, the helmet body outer tip end is provided with groove structure, and the groove is provided with multiple, and the groove is integrally downward
It is presented certain radian, groove top is provided with heat emission hole, and the helmet body material is high-strength light plastics, the power supply, control
System, interface card plate and switching circuit board processed are sealed and are fixed on the helmet body using AB glue.
Wherein, prior-warning device and sound pick up equipment are also included in the control system, prior-warning device and sound pick up equipment are by leading
Line is connected with control system；The prior-warning device includes the detection unit being placed in the heat emission hole and is placed in control system
Protection device；The sound pick up equipment is distributed across multiple audio sensing units inside helmet body, and the audio sensing unit is used
In the reception of information.
Wherein, the PTT apparatus surfaces are provided with PTT buttons and fixing device, and the PTT buttons are press-type button,
The fixing device is buckle structure, and the PTT devices side is provided with finger ring, and lower end is provided with USB interface, the USB interface table
Face is provided with protector, is set inside the PTT devices and also has supply unit；The PTT devices and the multifunctional helmet
The connected mode of intercom is wireless connection.
The invention discloses a kind of talkback system, the talkback system includes multifunctional helmet any one of described above
Intercom, the multifunctional helmet intercommunication function and at least one other type or same type of intercom are matched, shape
Into talkback system, in the talkback system, realized by transmission of the antenna to signal and PTT buttons and freely conversed
Finally, the invention also discloses a kind of application method of multifunctional helmet intercom, the described method comprises the following steps：
User is adjusted interphone device to required frequency range by using the frequency range adjusting knob, unlatching interphone device,
User selects suitable intercommunication volume by the volume adjustment knob；User is by the left and right fixing band by multi-function head
Helmet intercom is fixed on head；
User can be listened to by left speaker and right loudspeaker, if environment can pass through earphone interface peripheral earphone when noisy；
When needing to carry out intercommunication with other people, user need to only touch PTT buttons, then speak, and the audio sensing unit will
Received information transmission is finally handled voice messaging to audio treatment unit in control system through ovennodulation, amplification etc.
Other intercoms in the frequency range are passed to by antenna, so as to complete freely conversing between intercom.
The present invention is advantageous in that：Intercom and common helmet are combined, so do not removing the feelings of the helmet
Also communication exchange can be easily carried out under condition, using earphone and loudspeaker two ways, even if in a noisy environment,
The sound that intercom is sent can accurately be received, it is ensured that information interchange is errorless, while both hands are liberated, and both do not interfere with each other,
For user when carrying out intercommunication, sound is transferred to the sound pick up equipment on helmet body by human body skull, so as to which user be expressed
Information transmission to audio devices, other interphone devices in same system are passed to eventually through antenna；PTT devices with it is right
Say that machine is wireless connection, it is more convenient during use.
Brief description of the drawings：
Fig. 1 is the primary structure figure of the present invention；
Fig. 2 is the detonation configuration figure of the present invention；
Fig. 3 is the helmet stereogram of the present invention；
Fig. 4 is the PTT devices of the present invention.
Main element symbol description is as follows：
1st, helmet body 2, interphone device
3rd, lug boss 4, helmet body rear end
6th, PTT devices 11, wire casing
12nd, plastic cement cover plate 13, groove
14th, heat emission hole 21, power supply
22nd, fan 23, control system
24th, fixing hole 25, audio sensing unit
31st, light adjusting knob 32, illuminating part
41st, volume adjustment knob 42, frequency range adjusting knob
43rd, silica shell 44, USB interface
45th, earphone interface 51, right loudspeaker
52nd, left speaker 61, PTT buttons
62nd, bayonet unit 63, finger ring
64th, USB interface.
Embodiment
In order to more clearly state the present invention, the present invention is further described below in conjunction with the accompanying drawings.
Fig. 1 and Fig. 2 are referred to, the invention provides a kind of ventilated type helmet-type intercom, including helmet body 1 and intercom
Device 2,1 is provided with interphone device 2 in helmet body, and interphone device 2 is located at the inside upper part of helmet body 1, and interphone device 2 wraps
Power supply 21, control system 23 and fan 22 are included, power supply 21 shares two and positioned at the both sides of fan 22, one end of fan 22 and control
System 23 processed is connected；Helmet body rear end 4 is provided with interface card（It is not shown）, it is electric that interface card is provided with wireless PTT receptions
Road, data-interface and adjusting knob；Data-interface includes USB interface 44 and earphone interface 45, the tool of data-interface surface covering one
Streaky silica shell 43, silica shell both sides are provided with adjusting knob, and adjusting knob includes volume adjustment knob 41 and frequency range is adjusted
Knob 42 is saved, is connected data-interface and adjusting knob with interphone device 2 using wire, the case nose of helmet body 1
It is additionally provided with a lug boss 3 to stretch out；Illuminating part 32 is installed in lug boss 3, illuminating part 32 is located at the front end of lug boss 3,
Light adjusting knob 31 is provided with the front end of lug boss 3 simultaneously, light adjusting knob 31 adjusts the luminous intensity of illuminating part, institute
It is LED to state illuminating part；The interior forward end of helmet body 1 is provided with plastic cement cover plate 12, in the cavity that plastic cement cover plate 12 and helmet body are formed
Provided with switching circuit board, plate is provided with fan swicth and illuminating part switchs.Power supply 21, the and of control system 23 of interphone device 2
The corner of fan 22 is equipped with fixing hole 25, and each component of interphone device 2 is fixed on helmet body 1 by screw,
The inner surface of the Inner Front End of helmet body 1 is additionally provided with a plurality of wire casing（Figure is not marked）, wire is installed in wire casing, wire and then is fixed on institute
State on helmet body 1, a plurality of sheet metal is additionally provided with wire casing（It is not shown）, it is affixed on inside wire casing, sheet metal composition dual-mode antenna.
Interphone device is divided into some, the whole action of common completion of respectively partly sharing out the work and help one another, if having one to damage, directly more
Whole interphone device can need not be changed by changing damage part, and maintenance cost is minimized；The design of two power supplys ensures there is foot
Enough endurances, lug boss set luminescent device, in the case of insufficient light also can normal use, use range is more
Extensively；The a plurality of wire casing for disposing wire is provided with last helmet body, both fixes wire, while without using other materials, reduce
Production cost, antenna is provided with wire casing, is both the reasonable utilization to space, also effectively increases the length of antenna, enter one
Step adds the conveying scope of signal.
Refer to Fig. 2 and Fig. 3, the both sides of helmet body 1 are provided with left earflap and right earflap, the shell of helmet body 1 and left earflap it
Between left speaker 51 is housed, right loudspeaker 52 is housed, loudspeaker passes through wire and control system 23 between helmet body and right earflap
It is connected, left earflap connects left fixing band（It is not shown）, the right fixing band of right earflap connection（It is not shown）, left fixing band and right fixing band
Connected using clamp, software inner liner is installed inside helmet body 1（It is not shown）.Wherein, software inner liner includes air bag
And interphone device 2 is close in massage cushion, air bag one end, the other end is connected with massage cushion, and massage cushion is arcuate structure, is agreed with
The interior shape of helmet body 1.The outer tip end of helmet body 1 is provided with the structure of groove 11, and groove 11 is provided with multiple, and groove 11 is overall to be in downwards
Now certain radian, the top of groove 11 are provided with heat emission hole 14, and the material of helmet body 1 is high-strength light plastics, power supply, controls system
System, plastic plate are sealed using AB glue；
Prior-warning device and audio devices are additionally provided with control system 23, prior-warning device includes the detection unit being placed in heat emission hole
（Figure is not marked）With the processing unit being placed in control system 23；Detection unit is used for the humiture for detecting helmet local environment, place
Reason device is used to analyze and process the environmental information detected by detection unit；Audio devices include audio treatment unit and
The multiple audio sensing units 25 being distributed on helmet body inside；Multiple heat emission holes, heat emission hole and fan position are provided with the top of the helmet
Heat can exclude in time when same position, fan running, be advantageous to the radiating of summer Head cooling and interphone device, simultaneously
It ensure that head does not have feeling of oppression and heat generation；Detection unit is provided with, the epidemic disaster residing for intercom is detected, if intercom institute
The humiture at place is not met with setting range, and prior-warning device can remind user in time, prevent user from fortuitous event occur；In the helmet
Multiple audio sensing units are set in vivo, and sound is sent in frequency induction module user by human body skull when in use, is entered
And received by audio devices, realize and exchange finally by antenna and other intercoms, in addition, using audio sensing unit,
While ensureing that information is transmitted, the influence of environmental noise can be effectively reduced so that intercommunication is more during use by user
Add ground clear.
Referring to Fig. 4, the surface of PTT devices 6 is provided with PTT buttons 61 and fixing device, PTT buttons 61 are pressed for press-type
Key, fixing device are bayonet unit 62, and bayonet unit is provided with finger ring 63, and the lower end of PTT devices 6 is provided with USB interface 64, and USB connects
64 surfaces of mouth are provided with protector（Figure is not marked）, PTT devices 6 are internally provided with circuit board and supply unit；When button 61 is pressed
When lower, launch 2.4G data signals, it is defeated after the receiving circuit on helmet interface card receives signal and decoded examination
Go out control system of the level notice in helmet body, start intercommunication program.The external world can be effectively avoided provided with protector
Liquid and dust etc. enter inside PTT devices and device are caused to damage, and the setting of bayonet unit can cause PTT devices to fix
Setting in different positions, such as finger ring can allow user to secure the device on hand, facilitate user to be used.
The invention discloses a kind of talkback system, talkback system includes any one multifunctional helmet pair described above
Say that machine, multifunctional helmet intercommunication function and at least one other type or same type of intercom are matched, form intercommunication
Machine system, in talkback system, realized by key control by transmission of the antenna to signal and PTT and freely conversed.
Finally, the invention also discloses a kind of application method of multifunctional helmet intercom, comprise the following steps：
User opens interphone device, and interphone device is adjusted to required frequency range, user by using frequency range adjusting knob
Suitable intercommunication volume is selected by the volume adjustment knob；User is by the left and right fixing band by multifunctional helmet pair
The machine of saying is fixed on head；User can be listened to by left speaker and right loudspeaker, if environment can be connect when noisy by earphone
Mouth peripheral earphone；When needing to carry out intercommunication with other people, user need to only touch PTT buttons, then speak, audio sensing
Received information transmission to audio treatment unit, is finally handled and passes through voice messaging by unit through ovennodulation, amplification etc.
Antenna passes to other intercoms in the frequency range, so as to complete freely conversing between intercom.
Advantage of the invention is that：
1）Intercom part is separately mounted in the helmet by interphone device using crash helmet as shell, using the cushion space of the helmet
On, making material is so fully saved, effectively reduces production cost；
2）Adjusting knob and interface arrangement are set in helmet body rear end, makes full use of each position of helmet body, user uses regulation
The work that knob selection most adapts to is adjusted, and the USB interface in interface arrangement had both realized that charging acted on, and and can is carried out to control system
Program coding, earphone interface ensures in a noisy environment still can normal work；
3）Lug boss is provided with illuminating part, in the case of light is insufficient, can provide Lighting Service, meet it is various under the conditions of
Use；
4）During outdoor construction, especially in high temperature environments, employee is soaked with sweat, can also influence operating efficiency；The present apparatus is extremely pasted
Heart devises fan, can to Head cooling, while can also in time interphone device in operation process caused heat
Amount discharges；
5）Antenna is placed in wire casing structure, makes full use of each position, reduces the waste in space, and this outside antenna is provided with more
Bar, the transmission of signal is more stable, and range of receiving is also more extensive；
6）Audio sensing unit is set in the helmet, voice is sent to audio sensing unit using human body skull, then sound is turned
Change electric signal into, give the audio treatment unit of control system.So can effectively can be with the influence of filtering environmental noise, greatly
Improve the transmission quality of sound in ground；
7）PTT keys use wireless mode, can break away from the worry of electric wire so that user's operation is lighter.
Disclosed above is only several specific embodiments of the present invention, but the present invention is not limited to this, such as is installed additional
The changes that any person skilled in the art can think of such as GPS positioning device or other kinds of device should all fall into the present invention
Protection domain.
Claims (10)
- A kind of 1. multifunctional helmet intercom, it is characterised in that including helmet body and interphone device and PTT devices, the head Interphone device is provided with helmet body, the interphone device is located at the inside upper part of the helmet body, and interphone device includes electricity Source, control system and fan, the power supply share two and positioned at the both sides of the fan, one end and the control system phases of fan Even；Helmet body rear end is provided with interface card, data-interface and adjusting knob；The interface card connects provided with wireless PTT Circuit is received, the data-interface includes USB interface and earphone interface, the streaky silica gel of tool of data-interface surface covering one Shell, the silica shell both sides are provided with adjusting knob, and the adjusting knob includes volume adjustment knob and frequency range adjusting knob, made Interface card and intercom control system are connected with wire, the case nose of helmet body is additionally provided with a lug boss；Institute State and illuminating part is installed in lug boss, the illuminating part is located at lug boss front end, while the front end of lug boss is provided with lamp Light adjusting knob, the luminous intensity of the light adjusting knob regulation illuminating part, the illuminating part is LED.
- 2. multifunctional helmet intercom according to claim 1, it is characterised in that the helmet body interior forward end is provided with modeling Glue cover plate, the cavity of plastic cement cover plate and the helmet body formation is interior to be provided with switching circuit board, and the switching circuit board is provided with wind Fan switch and illuminating part switch.
- 3. multifunctional helmet intercom according to claim 1, it is characterised in that the power supply of the interphone device, control The corner of system processed and fan is equipped with fixing hole, and each component of interphone device is fixed on into helmet body by screw On, the inner surface of front end is additionally provided with a plurality of wire casing in the helmet body, and wire is provided with the wire casing, and the wire is fixed on On the helmet body, a plurality of sheet metal is additionally provided with the wire casing, is affixed on inside wire casing, the sheet metal composition transmitting-receiving day Line.
- 4. ventilated type multifunctional helmet intercom according to claim 1, it is characterised in that the helmet body both sides are set Have left earflap and right earflap, left speaker be housed between the helmet body case and left earflap, the helmet body and right earflap it Between right loudspeaker is housed, the loudspeaker is connected by wire with control system, and the left earflap connects left fixing band, the right side Earflap connects right fixing band, and the left fixing band is connected with right fixing band using clamp, and inner helmet is provided with software inner liner.
- 5. multifunctional helmet intercom according to claim 4, it is characterised in that the software inner liner includes inflating air Interphone device is close in capsule and massage cushion, described air bag one end, and the other end is connected with massage cushion, and the massage cushion is an arc Shape structure, agree with helmet body interior shape.
- 6. multifunctional helmet intercom according to claim 1, it is characterised in that the helmet body outer tip end is provided with recessed Slot structure, the groove are provided with multiple, and integrally certain radian is presented downwards in the groove, and groove top is provided with heat emission hole, institute It is high-strength light plastics to state helmet body material, and the power supply, control system, interface card plate and switching circuit board use AB glue is sealed and is fixed on the helmet body.
- 7. multifunctional helmet intercom according to claim 1, it is characterised in that also include early warning in the control system Device and sound pick up equipment, prior-warning device and sound pick up equipment are connected by wire with control system；The prior-warning device includes being placed in Detection unit in the heat emission hole and the protection device being placed in control system；The sound pick up equipment is distributed across in helmet body Multiple audio sensing units in portion, the audio sensing unit are used for the reception of information.
- 8. multifunctional helmet intercom according to claim 1, it is characterised in that the PTT apparatus surfaces are provided with PTT Button and fixing device, the PTT buttons are press-type button, and the fixing device is buckle structure, the PTT devices side Provided with finger ring, lower end is provided with USB interface, and the USB interface surface is provided with protector, set also inside the PTT devices There is supply unit；The connected mode of the PTT devices and the multifunctional helmet intercom is wireless connection.
- 9. a kind of talkback system, it is characterised in that the talkback system includes the more work(of any one described in claim 1-8 Energy helmet intercom, the multifunctional helmet intercommunication function and at least one other type or same type of intercom are matched somebody with somebody It is right, talkback system is formed, in the talkback system, is realized by transmission of the antenna to signal and PTT buttons and freely led to Words.
- 10. a kind of application method of multifunctional helmet intercom, it is characterised in that the described method comprises the following steps：User is adjusted interphone device to required frequency range by using the frequency range adjusting knob, unlatching interphone device, User selects suitable intercommunication volume by the volume adjustment knob；User is by the left and right fixing band by multi-function head Helmet intercom is fixed on head；User can be listened to by left speaker and right loudspeaker, if environment can pass through earphone interface peripheral earphone when noisy； When needing to carry out intercommunication with other people, user need to only touch PTT buttons, then speak, and the audio sensing unit will Received information transmission is finally handled voice messaging to audio treatment unit in control system through ovennodulation, amplification etc. Other intercoms in the frequency range are passed to by antenna, so as to complete freely conversing between intercom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710856042.9A CN107432523A (en) | 2017-09-21 | 2017-09-21 | Multifunctional helmet intercom and system and application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710856042.9A CN107432523A (en) | 2017-09-21 | 2017-09-21 | Multifunctional helmet intercom and system and application method |
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| CN107432523A true CN107432523A (en) | 2017-12-05 |
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| CN201710856042.9A Pending CN107432523A (en) | 2017-09-21 | 2017-09-21 | Multifunctional helmet intercom and system and application method |
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Cited By (3)
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| CN107863982A (en) * | 2017-12-28 | 2018-03-30 | 广西南宁胜祺安科技开发有限公司 | It is a kind of to wear hanging decompression intercom with air-drying function |
| CN111990723A (en) * | 2020-08-24 | 2020-11-27 | 国网湖北省电力有限公司直流运检公司 | Safety helmet with talkback function |
| CN114073062A (en) * | 2019-06-24 | 2022-02-18 | 奥托尼尔·弗洛雷斯 | Head-mounted radio assembly with extended controls |
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| CN105124848A (en) * | 2015-08-14 | 2015-12-09 | 童田 | Multifunctional helmet for rider |
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| CN205214329U (en) * | 2015-11-30 | 2016-05-11 | 姜少君 | Helmet with fan and warning light |
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