CN2703279Y - Light control speech transmitting system - Google Patents
Light control speech transmitting system Download PDFInfo
- Publication number
- CN2703279Y CN2703279Y CNU032244711U CN03224471U CN2703279Y CN 2703279 Y CN2703279 Y CN 2703279Y CN U032244711 U CNU032244711 U CN U032244711U CN 03224471 U CN03224471 U CN 03224471U CN 2703279 Y CN2703279 Y CN 2703279Y
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- CN
- China
- Prior art keywords
- light
- audio
- classroom
- emitting devices
- light emitting
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- Expired - Fee Related
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Abstract
The utility model discloses a light control speech transmitting system, comprising an audio frequency transmitting device, an optical modulating device, an optical emission device, and an optical receiver. The audio frequency transmitting device outputs an audio signal to the optical modulating device, and after the audio signal is modulated, the optical emission device emits an infrared light signal. The optical receiver receives the infrared light signal emitted by the optical emission device, and the infrared light signal is demodulated to the audio signal, which is listened by students. The optical emission device comprises a plurality of emitters, and the arranging method thereof can enable the emitted infrared light to uniformly arrive at each part of receiving space (such as a classroom). The length of emitters can be identical or not. Because the utility model uses light wave to transmit the speech, the utility model is not easy to be affected by the outside; because the optical emission device is directly mounted in the middle of the top of the classroom, the listened sound around the classroom is clear and a system installation channel plate does not need to be laid out; the configuration is flexible, the installation and maintenance is convenient, and the maneuverability is good.
Description
Technical field
The utility model relates to the system that utilizes the light transmission voice, relates in particular to the phonetic teaching transmission system.
Background technology
The at present existing voice-transmission system that is used for the teaching classroom in and takes an examination, it is wired or employing radiowave technology, be used in mostly in the examination of voice hearing, really apply in the teaching of foreign language listening at ordinary times then seldom, reason is owing to can not solve the problem that interferes with each other between each classroom well, and just phonetic teaching independently is carried out and the examination meeting is very difficult in each classroom; Use at present many especially radiowave technology,, and be subjected to the interference of proximity electromagnetic ripple on every side easily and also disturb other people wireless device simultaneously easily because its frequency of utilization is subjected to the frequency control of the Radio Management Commission.
Chinese patent 95111663.0 discloses a kind of infrared two-direction speech sound transmission system, and this system has utilized infrared light to come transmission of speech signals, is not subject to external interference, does not also disturb others' wireless device, has improved teaching efficiency.
But system's installation frid that above-mentioned infrared two-direction speech sound transmission system equipment need be laid in before and after the classroom is provided with infrared transmitter, and it is big to take the classroom area, and installation and maintenance expense height is a little less than the centre received signal of classroom.
Summary of the invention
The purpose of this utility model is a kind of flexible configuration to be provided, to be convenient to installation and maintenance, to listen to the light-operated voice-transmission system that sound is used for teaching examination clearly at problems of the prior art.
For realizing the purpose of this utility model, the utility model provides a kind of light-operated voice-transmission system, this system comprises audio emitting device, optic modulating device, light emitting devices and optical pickup apparatus, described audio emitting device is connected with optic modulating device by sound source wire, optic modulating device is connected with light emitting devices, described light emitting devices is the device of emission infrared light, described optical pickup apparatus is for receiving the device of infrared light, and described light emitting devices comprises one or more emitters.
In above-mentioned light-operated voice-transmission system:
Described a plurality of emitter can be isometric or not isometric.
Described optic modulating device and light emitting devices are integrated in the device.
Described audio emitting device is an audio transmitter.
Described audio emitting device is a computer system, and described computer system comprises an audio output device, and this audio output device can be exported one or more sound signal.
Described audio output device is one or more sound card that is plugged on the described computer motherboard.
The sound signal of described audio emitting device output is through a control device, and this control device comprises that source of sound switches the gauge tap and the power switch of socket, light emitting devices.
Audio emitting device output audio signal of the present utility model to described optic modulating device is modulated the back by described light emitting devices emission infrared signal, and described optical pickup apparatus receives the infrared signal that light emitting devices sends and is demodulated into sound signal and listened to by the student.
Said light emitting devices comprises one or several emitters; When using several emitters, its arrangement mode should make the infrared light that sends can arrive each position that receives space (as the classroom) substantially equably as far as possible; These emitters can be isometric also can be not isometric.
Audio emitting device of the present utility model is positioned at master-control room; Control device is positioned near the blackboard of classroom, overhead 1 meter to 2 meters of bottom; Light emitting devices approximately is positioned at the centre at top, classroom, on one side when the classroom strong sunlight irradiation is arranged, the installation site is to high light place translation certain distance, as about 10 centimetres to 1 meter; Optic modulating device adopts extension wall mode to be positioned at from light emitting devices the most nearby
The utility model utilizes the light wave transmissions voice, is not subject to ectocine; Light emitting devices is directly installed on the centre at top, classroom, and they a plurality of emitters that comprise make that to listen to sound everywhere in the classroom clear, and do not need arranging system that frid is installed, and flexible configuration is convenient to installation and maintenance, and maneuverability is good; Unified voice messaging both can be listened in each classroom, also can listen to independently voice messaging separately.
Description of drawings
Fig. 1 is a system layout synoptic diagram of the present utility model.
The connotation of each Reference numeral is among the figure:
1 computer system 2 is concentrated sound source wire 3 branch's sound source wire
4 optic modulating devices, 5 optical pickup apparatus, 6 light emitting devices
7 control device, 8 master-control rooms, 9 classrooms
Embodiment
Below in conjunction with accompanying drawing the utility model is further described:
Computing machine 1 among Fig. 1 in the master-control room 8 transmits the multi-media voice signal to each classroom by concentrating sound source wire 2 and branch's sound source wire 3, voice signal is modulated the back by light emitting devices 6 emission infrared signals through control device 7 to optic modulating device 4, and the student who is sitting on the desk can listen to by optical pickup apparatus 5.Classroom 9 inner controllers 7 are positioned near the blackboard, overhead 1.4 meters, near the power supply wiring place is arranged is best place, from control device 7 cablings in the raised floor, power lead is from control device 7 left side outlets, makes power lead and tone frequency channel wire branch two wire casings that drive away during wiring as far as possible; Optic modulating device 4 adopts hangs the wall mode, and equipment is positioned at from light emitting devices 6 the most nearby; Light emitting devices 6 is positioned at the centre at top, classroom, on one side as the classroom strong sunlight irradiation is arranged, then the installation site is to 20 centimetres of high light place translations.
Light emitting devices 6 in the present embodiment is an infrared transmitter, and optic modulating device 4 is an electrooptic modulator, and optical pickup apparatus 5 is light-operated wireless headset.
Owing to utilized computing machine as audio emitting device, can transmit the multi-path voice signal simultaneously to different classrooms, realized the independent teaching of each class, thereby allowed every classroom all become independently speech room; And infrared transmitter and electrooptic modulator volume are small and exquisite, are positioned at the classroom center of top, make that each position can both receive voice signal clearly in the classroom.
Claims (7)
1, a kind of light-operated voice-transmission system, comprise audio emitting device, optic modulating device, light emitting devices and optical pickup apparatus, described audio emitting device is connected with optic modulating device by sound source wire, optic modulating device is connected with light emitting devices, described light emitting devices is the device of emission infrared light, described optical pickup apparatus is characterized in that for receiving the device of infrared light described light emitting devices comprises one or more emitters.
2, light-operated voice-transmission system as claimed in claim 1 is characterized in that, described a plurality of emitters can be isometric or not isometric.
3, light-operated voice-transmission system as claimed in claim 1 is characterized in that, described optic modulating device and light emitting devices are integrated in the device.
4, light-operated voice-transmission system as claimed in claim 1 is characterized in that, described audio emitting device is an audio transmitter.
5, light-operated voice-transmission system as claimed in claim 1 is characterized in that, described audio emitting device is a computer system, and described computer system comprises an audio output device, and this audio output device can be exported one or more sound signal.
6, light-operated voice-transmission system as claimed in claim 5 is characterized in that, described audio output device is one or more sound card that is plugged on the described computer motherboard.
7, light-operated voice system as claimed in claim 1 is characterized in that, the sound signal of described audio emitting device output is through a control device, and this control device comprises that source of sound switches the gauge tap and the power switch of socket, light emitting devices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032244711U CN2703279Y (en) | 2003-03-24 | 2003-03-24 | Light control speech transmitting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032244711U CN2703279Y (en) | 2003-03-24 | 2003-03-24 | Light control speech transmitting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2703279Y true CN2703279Y (en) | 2005-06-01 |
Family
ID=34755129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU032244711U Expired - Fee Related CN2703279Y (en) | 2003-03-24 | 2003-03-24 | Light control speech transmitting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2703279Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105337678A (en) * | 2014-08-13 | 2016-02-17 | 广州意合信息科技有限公司 | School wireless voice class grouping broadcast system |
-
2003
- 2003-03-24 CN CNU032244711U patent/CN2703279Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105337678A (en) * | 2014-08-13 | 2016-02-17 | 广州意合信息科技有限公司 | School wireless voice class grouping broadcast system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050601 |