CN204046615U - A kind of IP network infrared transmitter - Google Patents
A kind of IP network infrared transmitter Download PDFInfo
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- CN204046615U CN204046615U CN201420534940.4U CN201420534940U CN204046615U CN 204046615 U CN204046615 U CN 204046615U CN 201420534940 U CN201420534940 U CN 201420534940U CN 204046615 U CN204046615 U CN 204046615U
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Abstract
A kind of IP network infrared transmitter, this technology utilizes the signal transport vehicle of infrared waves, be conducive to avoiding outer signals to disturb, simultaneously, utilize infrared waves can not improve the confidentiality of voice listening through the feature of wall etc., thus carry out campus broadcasting to school or examination brings great convenience, it is characterized in that, comprise audio frequency FM modulation module, described audio frequency FM modulation module connects IP network audio decoder module respectively, microphone input processing circuit, audio frequency input processing circuit, infrared light emission pipe driver module and same input-output socket frequently, described IP network audio decoder model calling IP network interface, described microphone input processing circuit connects microphone input socket, described audio frequency input processing circuit connects Audio input jack, described infrared light emission pipe driver module connects power supply circuits and infrared light emission pipe array respectively.
Description
Technical field
The utility model relates to sound transmission technology, particularly a kind of IP network infrared transmitter.
Background technology
The voice broadcast service of school or voice listening or phonetic teaching etc., in order in order to be effective, mutual interference etc. such as between confidentiality, anti-interference, the adjacent classroom of reduction, to lift-off technology and reception technique etc., particularly lift-off technology proposes higher requirement.Transmitter of the prior art is difficult to meet the demands.The present inventor is devoted to the research and development of this respect equipment always, by combination IP network technology and infrared emitting technology, completes the utility model.
Utility model content
The utility model, for the defect existed in prior art or deficiency, provides a kind of IP network infrared transmitter, the audio signal in IP network can be converted to infrared waves and launch, to be reduced into sound by the earphone etc. of band infrared receiver function.This technology utilizes the signal transport vehicle of infrared waves, be conducive to avoiding outer signals to disturb, meanwhile, utilize infrared waves can not improve the confidentiality of voice listening through the feature of wall etc., thus carry out campus broadcasting to school or examination brings great convenience.
The technical solution of the utility model is as follows:
A kind of IP network infrared transmitter, it is characterized in that, comprise audio frequency FM modulation module, described audio frequency FM modulation module connects IP network audio decoder module respectively, microphone input processing circuit, audio frequency input processing circuit, infrared light emission pipe driver module and same input-output socket frequently, described IP network audio decoder model calling IP network interface, described microphone input processing circuit connects microphone input socket, described audio frequency input processing circuit connects Audio input jack, described infrared light emission pipe driver module connects power supply circuits and infrared light emission pipe array respectively.
Described audio frequency FM modulation module is the integrated circuit (IC) chip with several pins, several pins described comprise the pin corresponding with each port following: left channel audio input port, modulating frequency control port, synchronous port, grounding ports, right channel audio input port, level output end mouth, trigger port, power port, time controling port.
Described audio frequency FM modulation module is the integrated circuit (IC) chip with 16 pins, 1st pin is left channel audio input port, 2nd pin is left channel modulation FREQUENCY CONTROL port, 3rd pin is the first synchronous port, 4th pin is the first grounding ports, 5th pin is right channel audio input port, 6th pin is right channel modulation FREQUENCY CONTROL port, 7th pin is the second synchronous port, 8th pin is the second grounding ports, 9th pin is second electrical level output port, 10th pin is the second time controling port, 11st pin is the second triggering port, 12nd pin is the first power port, 13rd pin is the first level output end mouth, 14th pin is very first time control port, 15th pin is the first triggering port, 16th pin is second source port.
1st pin is divided into two-way, wherein lead up to the 7th capacity earth, another road is divided into four tunnels after connecting the first resistance again, the first via connects IP network audio decoder module by the first electric capacity, second tunnel connects microphone input processing circuit by the second electric capacity, 3rd tunnel connects audio frequency input processing circuit by the 3rd electric capacity, and the 4th tunnel connects the 15th pin by the 9th electric capacity, 15th pin connects power supply node by the 12 electric capacity, described power supply node is by the 11 capacity earth, described power supply node connects the 16th pin and the 12nd pin respectively, described power supply node connects the 14th pin by the 13 electric capacity, described power supply node connects the 11st pin by the 14 electric capacity, described 11st pin is by being divided into two-way after the tenth electric capacity, the 4th resistance of wherein leading up to connects the 5th pin, another road is divided into three tunnels again, the first via connects audio frequency input processing circuit by the 6th electric capacity, second tunnel connects microphone input processing circuit by the 5th electric capacity, 3rd tunnel connects IP network audio decoder module by the 4th electric capacity, 5th pin is by the 8th capacity earth, 2nd pin passes through the second resistance and the first variable resistor ground connection of sequential series, 3rd pin is connected with the 7th pin, the 4th pin and the equal ground connection of the 8th pin, and the 6th pin passes through the 3rd resistance and the second adjustable resistance ground connection of sequential series, 13rd pin is divided into three tunnels, and the first via is by the 16 capacity earth, and the second tunnel connects infrared light emission pipe driver module by the 18 electric capacity, and the 3rd tunnel connects infrared light emission pipe driver module by the 5th resistance, 9th pin is divided into two-way, and the first via is by the 15 capacity earth, and the second tunnel connects infrared light emission pipe driver module by the 17 electric capacity.
The voltage parameter of described power supply node is+5V, and this voltage is operating voltage.
Described audio frequency FM modulation module is a binary channels FM modulation module, and two-way audio signal is modulated in two different frequencies by two inner modulation channels by respectively, and its frequency range is 50KHz ~ 15MHz.
Described IP network interface is 10/100M network interface.
Technique effect of the present utility model is as follows: infrared emitting system, not only well overcome audio system weak effect, noise is large, distortion is serious defect, and overcome the problem that frequency modulation system confidentiality is poor, reception exists dead angle, compatible all advantages of audio frequency and frequency modulation two kinds of patterns, being current optimal Listening Training, examination application model, is the revolutionary new technology in this field.This system adopts the signal transport vehicle of infrared waves of modulation, is thus not easy the interference by outer signals, thus have high-fidelity, sound clarity, without advantages such as background noises.Meanwhile, light wave can not pass wall, so confidentiality is better, need not worry that examination paper leak; Therefore characteristic, makes the teaching in adjacent classroom also can not interfere with each other, teaching by units thus can be handy.The characteristic of infrared waves is different from the rectilinear propagation properties of visible ray, in space, same classroom, can realize non-blind area cover, even if receiver front has human body or object to block also can never affect reception by the reflection of wall and ceiling and refraction.Student uses receiver also very simple, only switch need be pushed infrared position, must not make any adjustments and can receive.During large area examination playback, the audio signal input end of the infrared transmitter in each classroom can be realized unified audition by switching over to (mounted in advance) on the audio signal bus of playback.Infrared emission system is made up of infrared transmitter and source of sound, is gone out after effective audio signal is modulated by transmitter by infrared radiation.Sound is reduced into by the earphone of band infrared receiver function.IP network decode system, by the existing campus network system of school, not only overcome wired analog transmission range short, be easily disturbed, the defect such as distortion is large, but also random subregion broadcasting can be carried out in local area network (LAN) or wide area network, unifiedly to play and fixed time airplay, the network parameter of decode system not only can manually be arranged, and can also pass through network automatic acquisition.Campus broadcasting is carried out or examination brings great convenience to school.
Accompanying drawing explanation
Fig. 1 implements IP network infrared transmitter circuit block diagram of the present utility model.
Fig. 2 implements IP network infrared transmitter circuit theory schematic diagram of the present utility model.
Reference numeral lists as follows: 1-is with frequency input-output socket; 2-10/100M network interface; 3-microphone input socket; 4-Audio input jack; 5-IP network audio decoder module; 6-microphone input processing circuit; 7-audio frequency input processing circuit; 8-audio frequency FM modulation module; 9-power supply circuits; 10-infrared light emission pipe driver module; 11-infrared light emission pipe array; C1 ~ C6-first electric capacity is to the 6th electric capacity; C7 ~ C8-the 7th electric capacity is to the 8th electric capacity; C9 ~ C10-the 9th electric capacity is to the tenth electric capacity; C11 ~ C14-the 11 electric capacity is to the 14 electric capacity; C15 ~ C16-the 15 electric capacity is to the 16 electric capacity; C17 ~ C18-the 17 electric capacity is to the 18 electric capacity; VR1 ~ VR2-first variable resistor is to the second adjustable resistance; R1 ~ R5-first resistance is to the 5th resistance; IC-chip or integrated circuit; The left channel audio input port of LIN-i.e. the 1st pin; RES-modulating frequency control port (i.e. the 2nd pin or the 6th pin); SYNC-synchronous port (i.e. the 3rd pin or the 7th pin); VSS-grounding ports (i.e. the 4th pin or the 8th pin); The right channel audio input port of RIN-(i.e. the 5th pin); FO2-second electrical level output port i.e. the 9th pin; TC2-second time controling port i.e. the 10th pin; TR2-second triggers port i.e. the 11st pin; VDD-power port i.e. the 12nd pin or the 16th pin; FO1-first level output end mouth i.e. the 13rd pin; TC1-very first time control port i.e. the 14th pin; TR1-first triggers port i.e. the 15th pin.
Embodiment
Below in conjunction with accompanying drawing (Fig. 1-Fig. 2), the utility model is described.
Fig. 1 implements IP network infrared transmitter circuit block diagram of the present utility model.As shown in Figure 1, a kind of IP network infrared transmitter, it is characterized in that, comprise audio frequency FM modulation module 8, described audio frequency FM modulation module 8 connects IP network audio decoder module 5 respectively, microphone input processing circuit 6, audio frequency input processing circuit 7, infrared light emission pipe driver module 10 and same input-output socket 1 frequently, described IP network audio decoder module 5 connects IP network interface 2, described microphone input processing circuit 6 connects microphone input socket 3, described audio frequency input processing circuit 7 connects Audio input jack 4, described infrared light emission pipe driver module 10 connects power supply circuits 9 and infrared light emission pipe array 11 respectively.Described audio frequency FM modulation module 8 is for having the integrated circuit (IC) chip of several pins, several pins described comprise the pin corresponding with each port following: left channel audio input port LIN, modulating frequency control port RES, synchronous port SYNC, grounding ports VSS, right channel audio input port RIN, level output end mouth FO, trigger port TR, power port VDD, time controling port TC.Described audio frequency FM modulation module 8 is binary channels FM modulation modules, and two-way audio signal is modulated in two different frequencies by two inner modulation channels by respectively, and its frequency range is 50KHz ~ 15MHz.Described IP network interface 2 is 10/100M network interface.
Fig. 2 implements IP network infrared transmitter circuit theory schematic diagram of the present utility model.As shown in Figure 2, described audio frequency FM modulation module is the integrated circuit (IC) chip (IC2) with 16 pins, 1st pin is left channel audio input port LIN, 2nd pin is left channel modulation FREQUENCY CONTROL port RES, 3rd pin is the first synchronous port SYNC, 4th pin is the first grounding ports VSS, 5th pin is right channel audio input port RIN, 6th pin is right channel modulation FREQUENCY CONTROL port RES, 7th pin is the second synchronous port SYNC, 8th pin is the second grounding ports VSS, 9th pin is second electrical level output port FO2, 10th pin is the second time controling port TC2, 11st pin is the second triggering port TR2, 12nd pin is the first power port VDD, 13rd pin is the first level output end mouth FO1, 14th pin is very first time control port TC1, 15th pin is the first triggering port TR1, 16th pin is second source port VDD.
1st pin is divided into two-way, wherein lead up to the 7th electric capacity C7 ground connection, another road is divided into four tunnels after connecting the first resistance R1 again, the first via connects IP network audio decoder module 5 by the first electric capacity C1, second tunnel connects microphone input processing circuit 6 by the second electric capacity C2,3rd tunnel connects audio frequency input processing circuit the 7, four tunnel by the 3rd electric capacity C3 and connects the 15th pin by the 9th electric capacity C9, 15th pin connects power supply node (+5V) by the 12 electric capacity C12, described power supply node is by the 11 electric capacity C11 ground connection, described power supply node connects the 16th pin and the 12nd pin respectively, described power supply node connects the 14th pin by the 13 electric capacity C13, described power supply node connects the 11st pin by the 14 electric capacity C14, described 11st pin is by being divided into two-way after the tenth electric capacity C10, the 4th resistance R4 of wherein leading up to connects the 5th pin, another road is divided into three tunnels again, the first via connects audio frequency input processing circuit 7 by the 6th electric capacity C6, second tunnel connects microphone input processing circuit 6 by the 5th electric capacity C5, 3rd tunnel connects IP network audio decoder module 5 by the 4th electric capacity C4, 5th pin is by the 8th electric capacity C8 ground connection, 2nd pin passes through the second resistance R2 and the first variable resistor VR1 ground connection of sequential series, 3rd pin is connected with the 7th pin, the 4th pin and the equal ground connection of the 8th pin, and the 6th pin passes through the 3rd resistance R3 and the second adjustable resistance VR2 ground connection of sequential series, 13rd pin is divided into three tunnels, and the first via is by the 16 electric capacity C16 ground connection, and the second tunnel connects infrared light emission pipe driver module the 10, three tunnel by the 18 electric capacity C18 and connects infrared light emission pipe driver module 10 by the 5th resistance R5, 9th pin is divided into two-way, and the first via is by the 15 electric capacity C15 ground connection, and the second tunnel connects infrared light emission pipe driver module 10 by the 17 electric capacity C17.The voltage parameter of described power supply node is+5V, and this voltage is operating voltage.
IP network infrared transmitter, is characterized in that: comprise the digital audio and video signals infrared transmission circuit in wired simulated audio signal infrared transmission circuit, IP network, microphone signal infrared transmission circuit.Digital audio and video signals infrared transmission circuit in described wired analog audio signal infrared transmission circuit, IP network, microphone signal infrared transmission circuit are grouped together by connecting line.Wired analog audio signal infrared transmission circuit, can be 20-20000Hz frequency, amplitude be the audio signal of 100-600mV, is modulated in certain frequency with FM standard, by infrared form wireless transmission.Digital audio and video signals infrared transmission circuit in described IP network, adequate and systematic service device can be transferred to the digital audio and video signals on local area network (LAN) or wide area network, by automatically identifying that also decoded back is simulated audio signal, be modulated in certain frequency with FM standard, by infrared form wireless transmission.Described microphone signal infrared transmission circuit, after can saying that microphone signal is converted to audio signal by operational amplifier, after be modulated in certain frequency with FM standard, by infrared form wireless transmission.
IP network infrared transmitter, simulated audio signal is transferred in IP network by special installation, 2. 10/100M network interface netting twine being inserted accompanying drawing 1 carries out IP network data decode to 5. IP network audio decoder module, and be reduced into the audio signal of simulation, the audio signal of simulation is modulated by 8. voice modulation module, and modulated radiofrequency signal is again by 10. infrared ray driver module driving
infrared light emission array sends Infrared, then carries out receiving and reducing with infrared receiver.By the audio signal that wired connection is come, enter 8. voice modulation module through 4. Audio input jack after carrying out filtering and enlarge leadingly to 7. audio frequency input processing circuit and modulate, modulated radiofrequency signal is again by 10. infrared ray driver module driving
infrared light emission array sends Infrared, then carries out receiving and reducing with infrared receiver.The small-signal that moving-coil Mike obtains, through 3. microphone input socket to 6. microphone input processing circuit, sends into 8. voice modulation module and modulates after amplification, modulated radiofrequency signal is driven by 10. infrared ray driver module again
infrared light emission array sends Infrared, then carries out receiving and reducing with infrared receiver.
220V civil power, after 9. power supply circuits process, is supplied to other module by connecting line.The digital signal that transmission over networks is come, IP network data decode is carried out to 5. IP network audio decoder module through 2. 10/100M network interface, and be reduced into the audio signal of simulation, the audio signal of simulation is modulated by 8. audio frequency FM modulation module, and modulated radiofrequency signal is again by 10. infrared light emission pipe driver module driving
infrared light emission pipe array sends Infrared, then carries out receiving and reducing with infrared receiver.By the audio signal that wired connection is come, enter 8. audio frequency FM modulation module through 4. Audio input jack after carrying out filtering and enlarge leadingly to 7. audio frequency input processing circuit to modulate, modulated radiofrequency signal is driven by 10. infrared light emission pipe driver module again
infrared light emission pipe array sends Infrared, then carries out receiving and reducing with infrared receiver.The small-signal that moving-coil Mike obtains, through 3. microphone input socket to 6. microphone input processing circuit, sends into 8. audio frequency FM modulation module and modulates after amplification, modulated radiofrequency signal is driven by 10. infrared light emission pipe driver module again
infrared light emission pipe array sends Infrared, then carries out receiving and reducing with infrared receiver.
Fig. 2 audio frequency FM modulation module: the 15th pin (TR1) entering 8. audio frequency FM modulation module respectively through C1, C2, C3, C9 and R1 by L channel (L) audio signal that 5. IP network audio decoder module carries out IP, 7. audio frequency input processing circuit and 6. microphone input processing circuit output triggers port and the 1st pin (LIN) audio input port, and the 11st pin (TR2) that R channel (R) audio signal of output enters 8. audio frequency FM modulation module respectively through C4, C5, C6, C10 and R4 triggers port and the 5th pin (RIN) audio input port.8. audio frequency FM modulation module is a binary channels FM modulation module, and two-way audio signal (L), (R) are modulated in two different frequencies by two inner modulation channels by respectively, and its frequency range is 50KHz-15MHz.8. audio frequency FM modulation module inside also has two audio frequency Time delay circuit, when no audio signal inputs, system starts to enter delay state, when reaching regulation delay time, 8. audio frequency FM modulates the 9th (FO2) pin or the 13rd pin (FO1) the just stopping output high level of mould, and is quit work by the 10. infrared light emission pipe driver module that R5 controls below.Its delay time is determined by the amount of capacity of C13, is 1.2S when C13 is 0.1uF decay time; When C13 is 22uF, delay time is 60 seconds.8. the 2nd pin (RES) of audio frequency FM modulation module is LIN channel modulation FREQUENCY CONTROL port, controls by changing the resistance size of R2 and VR1 the frequency height that the 13rd pin (FO1) exports.8. the 6th pin (RES) of audio frequency FM modulation module is RIN channel modulation FREQUENCY CONTROL port, controls by changing the resistance size of R3 and VR2 the frequency height that the 9th pin (FO2) exports.8. the 3rd pin of audio frequency FM modulation module and the 7th pin are the synchronous port of inner two modulation channels.4th pin and the 8th pin are earth terminal.12nd pin and the 16th pin are power port, and operating voltage is+5V.
Herein means bright, more than describe and contribute to those skilled in the art and understand the invention, but and the protection range of unrestricted the invention.Any enforcement improving the equivalent replacement described above, modification and/or delete numerous conforming to the principle of simplicity and carry out not departing from the invention flesh and blood, all falls into the protection range of the invention.
Claims (7)
1. an IP network infrared transmitter, it is characterized in that, comprise audio frequency FM modulation module, described audio frequency FM modulation module connects IP network audio decoder module respectively, microphone input processing circuit, audio frequency input processing circuit, infrared light emission pipe driver module and same input-output socket frequently, described IP network audio decoder model calling IP network interface, described microphone input processing circuit connects microphone input socket, described audio frequency input processing circuit connects Audio input jack, described infrared light emission pipe driver module connects power supply circuits and infrared light emission pipe array respectively.
2. IP network infrared transmitter according to claim 1, it is characterized in that, described audio frequency FM modulation module is the integrated circuit (IC) chip with several pins, and several pins described comprise the pin corresponding with each port following: left channel audio input port, modulating frequency control port, synchronous port, grounding ports, right channel audio input port, level output end mouth, trigger port, power port, time controling port.
3. IP network infrared transmitter according to claim 1, it is characterized in that, described audio frequency FM modulation module is the integrated circuit (IC) chip with 16 pins, 1st pin is left channel audio input port, 2nd pin is left channel modulation FREQUENCY CONTROL port, 3rd pin is the first synchronous port, 4th pin is the first grounding ports, 5th pin is right channel audio input port, 6th pin is right channel modulation FREQUENCY CONTROL port, 7th pin is the second synchronous port, 8th pin is the second grounding ports, 9th pin is second electrical level output port, 10th pin is the second time controling port, 11st pin is the second triggering port, 12nd pin is the first power port, 13rd pin is the first level output end mouth, 14th pin is very first time control port, 15th pin is the first triggering port, 16th pin is second source port.
4. IP network infrared transmitter according to claim 3, it is characterized in that, 1st pin is divided into two-way, wherein lead up to the 7th capacity earth, another road is divided into four tunnels after connecting the first resistance again, and the first via connects IP network audio decoder module by the first electric capacity, and the second tunnel connects microphone input processing circuit by the second electric capacity, 3rd tunnel connects audio frequency input processing circuit by the 3rd electric capacity, and the 4th tunnel connects the 15th pin by the 9th electric capacity, 15th pin connects power supply node by the 12 electric capacity, described power supply node is by the 11 capacity earth, described power supply node connects the 16th pin and the 12nd pin respectively, described power supply node connects the 14th pin by the 13 electric capacity, described power supply node connects the 11st pin by the 14 electric capacity, described 11st pin is by being divided into two-way after the tenth electric capacity, the 4th resistance of wherein leading up to connects the 5th pin, another road is divided into three tunnels again, the first via connects audio frequency input processing circuit by the 6th electric capacity, second tunnel connects microphone input processing circuit by the 5th electric capacity, 3rd tunnel connects IP network audio decoder module by the 4th electric capacity, 5th pin is by the 8th capacity earth, 2nd pin passes through the second resistance and the first variable resistor ground connection of sequential series, 3rd pin is connected with the 7th pin, the 4th pin and the equal ground connection of the 8th pin, and the 6th pin passes through the 3rd resistance and the second adjustable resistance ground connection of sequential series, 13rd pin is divided into three tunnels, and the first via is by the 16 capacity earth, and the second tunnel connects infrared light emission pipe driver module by the 18 electric capacity, and the 3rd tunnel connects infrared light emission pipe driver module by the 5th resistance, 9th pin is divided into two-way, and the first via is by the 15 capacity earth, and the second tunnel connects infrared light emission pipe driver module by the 17 electric capacity.
5. IP network infrared transmitter according to claim 4, is characterized in that, the voltage parameter of described power supply node is+5V, and this voltage is operating voltage.
6. IP network infrared transmitter according to claim 1, it is characterized in that, described audio frequency FM modulation module is a binary channels FM modulation module, two-way audio signal is modulated in two different frequencies by two inner modulation channels by respectively, and its frequency range is 50KHz ~ 15MHz.
7. IP network infrared transmitter according to claim 1, is characterized in that, described IP network interface is 10/100M network interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420534940.4U CN204046615U (en) | 2014-09-17 | 2014-09-17 | A kind of IP network infrared transmitter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420534940.4U CN204046615U (en) | 2014-09-17 | 2014-09-17 | A kind of IP network infrared transmitter |
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| CN204046615U true CN204046615U (en) | 2014-12-24 |
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| CN201420534940.4U Active CN204046615U (en) | 2014-09-17 | 2014-09-17 | A kind of IP network infrared transmitter |
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| CN (1) | CN204046615U (en) |
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