CN109393627A - Infrared voice communication helmet system - Google Patents
Infrared voice communication helmet system Download PDFInfo
- Publication number
- CN109393627A CN109393627A CN201811169527.1A CN201811169527A CN109393627A CN 109393627 A CN109393627 A CN 109393627A CN 201811169527 A CN201811169527 A CN 201811169527A CN 109393627 A CN109393627 A CN 109393627A
- Authority
- CN
- China
- Prior art keywords
- infrared
- helmet
- unit
- infrared ray
- ray
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
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
- A42B3/0406—Accessories for helmets
-
- 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
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/516—Details of coding or modulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/60—Receivers
- H04B10/66—Non-coherent receivers, e.g. using direct detection
- H04B10/69—Electrical arrangements in the receiver
- H04B10/693—Arrangements for optimizing the preamplifier in the receiver
Abstract
A kind of infrared voice communication helmet system, it is characterized in that the headgear system communicated using infrared ray as transmission medium；It is made of main helmet and pair helmet, main helmet and secondary helmet all have voice modulation transmitting unit and infrared ray demodulation receiving unit, and transmitting and reception frequency difference are, it can be achieved that duplex signaling.Voice modulation transmitting unit is mainly made of etc. audio differential amplification unit, infrared frequency modulation unit and infra-red ray transmitting unit and forms；Infrared ray demodulation receiving unit is mainly made of infrared receiver, phase-locked loop frequency demodulating unit and Audio power amplifier unit.Because carrying out short distance communication as transmission medium using infrared ray, there is very strong confidentiality；Radio resource will not be occupied, has very strong anti-interference.
Description
Technical field
The present invention relates to speech communication headgear system, it is related specifically to be communicated using infrared ray as transmission medium
Headgear system.
Background technique
The helmet is that motorcycle is ridden the equipment that fan must be equipped with, and motorcycle is in manned ride due to influence that wind is made an uproar
Keep the speech exchange of motorcycle driver and back-seat passengers very inconvenient.
Infrared-ray communication technology has obtained wide application with the development of technology, especially in the household remote of short distance
Field be even more obtained significant progress, but infrared ray as speech communication due to can only in the visible range directly by infrared light
Line is propagated, and is only suitable for using in short distance, therefore limit its use scope.
Motorcycle driver and back-seat passengers are due to apart from close (generally within 1m), and according to the requirement of traffic law
Motorcycle driver and back-seat passengers must wear the helmet to guarantee safety, therefore can be by the helmet and infrared-ray communication technology
It combines and makes the intercommunication system that a motorcycle driver during motorcycle driving can exchange at any time with the passenger of back seat
System can carry out the communication of driving intention in time and mutually remind road conditions, increase riding safety.Simultaneously because infrared light propagation is straight
Linear and short distance, infrared-ray communication have very strong confidentiality；And not using radio wave is transmission medium, but also with very
Strong anti-interference.
Infrared voice communication helmet system of the invention is situated between using the infrared ray that wavelength is 0.88-0.94um as transmission
Voice signal is carried out frequency modulation(PFM) to infrared ray by matter, transmitter, and receiver is solved to by the infrared signal of voice modulation
It adjusts, pushes loudspeaker to restore voice signal after power amplification.Because using infrared ray as transmission medium, communication distance
Closely, therefore there is very strong confidentiality；And not using radio wave is transmission medium, will not occupy radio resource, and have
Standby very strong anti-interference.
Summary of the invention
The present invention is to provide for a kind of headgear system communicated using infrared ray as transmission medium, is suitable for needing to wear
It helmets and carries out the operation occasion of Near Field Communication, such as carrying person on motorcycle drives.
A kind of infrared voice communication helmet system, it is characterized in that the head communicated using infrared ray as transmission medium
Helmet system；It being made of main helmet and secondary helmet, main helmet and secondary helmet all have voice modulation transmitting unit and infrared ray demodulation receiving unit,
Transmitting and reception frequency difference are, it can be achieved that duplex signaling.Voice modulation transmitting unit is mainly by audio differential amplification unit, infrared
The composition such as line frequency modulation unit and infra-red ray transmitting unit；Infrared ray demodulates receiving unit mainly by infrared receiver, lock
Phase ring frequency demodulation unit and Audio power amplifier unit composition.
In above-mentioned invention, in voice modulation transmitting unit, Electret condenser microphone sensor MK1/MK2, operational amplifier
U2A, resistance R4/R6/R8/R9/R10/R11 and capacitor C2/C4/C5 form audio differential amplification unit；CMOS phaselocked loop is integrated
Circuit U 1, resistance R3/R7；Capacitor C3 and light emitting diode DS1 forms infrared frequency modulation unit；Triode Q1, infrared hair
Optical diode DS2 and resistance R2/R5 forms infra-red ray transmitting unit.
In infrared ray demodulation receiving unit, infrared phototriode Q3, operational amplifier U2B, resistance R13/R14/R16
Infrared receiver is formed with capacitor C10/C7；CMOS phase-locked loop intergrated circuit U3, resistance R15/R17/R18；Capacitor C8/C9/
C11 forms phase-locked loop frequency demodulating unit；Triode Q2, resistance R19 and loudspeaker LS1/LS2 form Audio power amplifier list
Member.
The beneficial effects of the present invention are: carrying out short distance communication as transmission medium using infrared ray, there is very strong guarantor
Close property；Radio resource will not be occupied, has very strong anti-interference.
Detailed description of the invention
The circuit diagram of the infrared voice communication helmet system of the present invention of attached drawing 1.
The functional block diagram of the infrared voice communication helmet system of the present invention of attached drawing 2.
The installation diagram of the infrared voice communication helmet system of the present invention of attached drawing 3.
In figure: 1. main helmets, 2. Electret condenser microphone sensor MK1,3. Electret condenser microphone sensor MK2,4. routes
5. loudspeaker LS1/LS2 of plate, 6. secondary helmets.
Specific embodiment
In the embodiment of 1 Fig. 1 of embodiment, the Electret condenser microphone sensor MK1/MK2 in modulate emission unit is just
Pole passes through resistance R6 and R7 respectively and is connected with positive supply, then defeated by capacitor C2/ resistance R9 and capacitor C5/ resistance R10 respectively
Enter the anti-phase input foot 2 and positive input pin 3 to operational amplifier U2A.The circuit realizes two functions: first function is to disappear
Except the noise of surrounding.Since the intensity of sound that the noise of surrounding reaches Electret condenser microphone sensor MK1/MK2 is almost the same, produce
Raw audio voltage is also identical, is input to after difference channel and cancels out each other for common-mode signal.Second function is the sound to people
Signal amplifies.MK1 face oral cavity when due to installation, receives stronger voice signal；MK2 is received far from oral cavity
Voice signal is weak, and the voice sound signal that MK1/MK2 is received is differential signal.Amplified audio signal is inputted by capacitor C4
To the 9 foot VCOIN of integrated circuit U1, which is the control foot of voltage controlled oscillator VCO.The center of the oscillation of voltage controlled oscillator VCO
Frequency is determined by the resistance R7 for meeting capacitor C3 and 11 feet between 6 feet, 7 feet of U1.The frequency of oscillation quilt of voltage controlled oscillator VCO
The modulation of the audio signal of input forms FM signal.Modulated frequency converted carrier signal is exported from 4 feet of U1 and is sent through resistance R5
The base stage for entering triode Q1 drives infrared light-emitting diode DS2 to emit IR modulated signals after amplification.The output of 10 feet passes through resistance
R3 drives light emitting diode DS1 flashing, and instruction sound transmission is carrying out.
Infrared phototriode Q3 in infrared ray demodulation receiving unit will receive IR modulated signals and be converted to telecommunications
It number is sent to 6 foot of inverting input terminal of operational amplifier U2B, the amplified signal of U2B is coupled by the output of 7 feet by capacitor C7
14 ends foot SIGIN for being sent into integrated circuit U3 are demodulated, and the centre frequency of demodulation is by connecing the capacitor between 6 feet, 7 feet of U3
The resistance R17 of C8 and 11 feet is determined.Audio signal after demodulation passes through coupled capacitor C9 and load electricity from 10 foot DEMOUNT output
Signal is sent to triode Q2 progress Audio power amplifier drive the speaker LS1/LS2 and made a sound by resistance R18.
Embodiment 2 is to reduce the volume of device, and component is encapsulated using SMD, and wiring board uses flexible circuit board.It is infrared
The main helmet of line speech communication headgear system is identical with secondary helmet circuit composition, only emits and receive frequency difference, main helmet it is infrared
In 100KHz, reception frequency is 250KHz for tranmitting frequency adjustment；The infrared emission frequency adjustment of secondary helmet receives frequency in 250KHz
For 100KHz.
The debugging step of system: first check for that whether there is or not erecting and welding mistakes by taking main helmet as an example, after the completion of component erecting and welding
Accidentally and check power supply whether there is short circuit failure.Then power supply is accessed, S1 is turned on the power switch, accesses oscillography in the output pin 1 of U2A
Device applies common mode noise to Electret condenser microphone sensor MK1/MK2, and adjustment adjustable resistance R9 makes the signal of oscilloscope display most
It is small.4 feet that frequency meter is connected to U1 again adjust the resistance value of R7 in the case where no audio input, and the frequency of 4 feet of U1 is made to exist
100KHz.In receiving unit, frequency meter is connected to 4 feet of U3, adjusts the resistance value of R17, makes the frequency of 4 feet of U3 in 250KHz.
The debugging of secondary helmet is identical as main helmet debugging, only emits and receives frequency on the contrary, not repeating.
Embodiment 3
In the embodiment of Fig. 3, Electret condenser microphone sensor MK1/MK2 is separately installed, and MK1 face oral cavity, MK2 is installed on head
Helmet inside front is not directly to oral cavity；Loudspeaker LS1/LS2 is plus the left and right sides for being separately mounted to inner helmet after sound insulation chamber
The ears of face people；Wiring board can be with double faced adhesive tape in the top of the helmet, and the protection of adhesive sticker protecting film is sticked in outside again；Infrared hair
Optical diode DS2 and infrared phototriode Q3 are put together, and centre blackens color partition with the infrared light pair for preventing DS2 from emitting
The interference of infrared phototriode Q3 needs to add infrared fileter before the reception window of infrared phototriode Q3, for filtering out
Other visible light sources.The DS2 launch window and Q3 for the helmet that main helmet, that is, driver wears receive window and install backwards.Conversely,
The DS2 launch window and Q3 for the helmet that secondary helmet, that is, back-seat passengers wear receive window and install forward.In short, the main helmet of installation requirement
The infrared luminous energy of DS2 transmitting is received by the phototriode Q3 of secondary helmet, and the infrared luminous energy of secondary helmet DS2 transmitting is by the photosensitive of main helmet
Triode Q3 is received.
Claims (2)
1. a kind of infrared voice communication helmet system, it is characterized in that the helmet communicated using infrared ray as transmission medium
System.
2. a kind of infrared voice communication helmet system according to claim 1, operating frequency PHASE-LOCKED LOOP PLL TECHNIQUE carries out red
The modulation and demodulation of outer light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811169527.1A CN109393627A (en) | 2018-10-09 | 2018-10-09 | Infrared voice communication helmet system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811169527.1A CN109393627A (en) | 2018-10-09 | 2018-10-09 | Infrared voice communication helmet system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109393627A true CN109393627A (en) | 2019-03-01 |
Family
ID=65466126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811169527.1A Withdrawn CN109393627A (en) | 2018-10-09 | 2018-10-09 | Infrared voice communication helmet system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109393627A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2161095Y (en) * | 1993-04-23 | 1994-04-13 | 毛依星 | Helmet for motorcycle |
| CN2176620Y (en) * | 1993-10-15 | 1994-09-07 | 张久兰 | Infrared wireless earphone |
| US6950635B1 (en) * | 1998-12-25 | 2005-09-27 | Honda Giken Kogyo Kabushiki Kaisha | Vehicular communication apparatus |
| CN102347766A (en) * | 2011-07-08 | 2012-02-08 | 美芯集成电路(深圳)有限公司 | Novel infrared audio transmission transceiving system controlled by phase-locked loop |
| CN203563068U (en) * | 2013-11-29 | 2014-04-23 | 王俊 | Infrared wireless voice communication device |
| CN204483186U (en) * | 2015-03-18 | 2015-07-22 | 深圳前海零距物联网科技有限公司 | There is the crash helmet of audio frequency input and output |
| CN106723598A (en) * | 2017-03-14 | 2017-05-31 | 常州市环境监测中心 | A kind of emergency monitoring equipment clothes of intelligent things |
-
2018
- 2018-10-09 CN CN201811169527.1A patent/CN109393627A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2161095Y (en) * | 1993-04-23 | 1994-04-13 | 毛依星 | Helmet for motorcycle |
| CN2176620Y (en) * | 1993-10-15 | 1994-09-07 | 张久兰 | Infrared wireless earphone |
| US6950635B1 (en) * | 1998-12-25 | 2005-09-27 | Honda Giken Kogyo Kabushiki Kaisha | Vehicular communication apparatus |
| CN102347766A (en) * | 2011-07-08 | 2012-02-08 | 美芯集成电路(深圳)有限公司 | Novel infrared audio transmission transceiving system controlled by phase-locked loop |
| CN203563068U (en) * | 2013-11-29 | 2014-04-23 | 王俊 | Infrared wireless voice communication device |
| CN204483186U (en) * | 2015-03-18 | 2015-07-22 | 深圳前海零距物联网科技有限公司 | There is the crash helmet of audio frequency input and output |
| CN106723598A (en) * | 2017-03-14 | 2017-05-31 | 常州市环境监测中心 | A kind of emergency monitoring equipment clothes of intelligent things |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6112149A (en) | Portable communication system | |
| DE69938234D1 (en) | TRIPLE LED DISPLAY SYSTEM WHICH HAS AN AUDIO OUTPUT | |
| CN102307063A (en) | Voice information notification system based on LED visible light | |
| CN202309713U (en) | Voice message notification system based on LED (Light Emitting Diode) visible light | |
| CN104320188A (en) | Stereo wireless transmission system | |
| Varanva et al. | LED to LED communication with WDM concept for flash light of Mobile phones | |
| CN109393627A (en) | Infrared voice communication helmet system | |
| CN206698370U (en) | A kind of Radio infrared night vision recorder | |
| Baklanov et al. | Audio transmission system using white LEDs | |
| CN207443174U (en) | A kind of Intelligent lightening device and system with telecommunications functions | |
| CN106330311A (en) | Intelligent traffic police flashlight with directional sound propagation function | |
| DE69929692D1 (en) | NEWS TRANSMISSION SYSTEM | |
| CN203813880U (en) | Portable movable multichannel wireless high-definition image relay system and transmission system | |
| CN206251282U (en) | A kind of studio broadcast intercom | |
| CN205610623U (en) | On -vehicle intercom based on wireless control technique | |
| CN2176620Y (en) | Infrared wireless earphone | |
| CN204190771U (en) | A kind of indoor visible light communication up link | |
| JPH0385878A (en) | Television receiver | |
| WO2018107672A1 (en) | Frequency-modulated receiving circuit, lamp and audio playback method thereof | |
| CN209233949U (en) | A kind of digital imagery transmission system based on 4K video | |
| CN220935196U (en) | Display system based on broadcast audio frequency is controllable | |
| CN108365864A (en) | A kind of wireless digital transmitting device | |
| KR200455734Y1 (en) | Portable megaphone equipped with two way speaker | |
| CN218141373U (en) | Car carries car machine equipment with screen and driving record function are thrown to cell-phone | |
| CN107809824A (en) | A kind of Intelligent lightening device with telecommunications functions, system and control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190301 |