CN203706544U - Laser interphone experimental instrument - Google Patents
Laser interphone experimental instrument Download PDFInfo
- Publication number
- CN203706544U CN203706544U CN201320859318.6U CN201320859318U CN203706544U CN 203706544 U CN203706544 U CN 203706544U CN 201320859318 U CN201320859318 U CN 201320859318U CN 203706544 U CN203706544 U CN 203706544U
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- laser
- voice signal
- circuit
- voice
- module
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Abstract
The utility model discloses a laser interphone experimental instrument, which comprises a voice signal laser emitting module and a voice signal laser receiving module. The input end of the voice signal laser emitting module and the input end of the voice signal laser receiving module are respectively connected with a power supply circuit. Voice signals are acquired, modulated and transmitted to the outside by means of the voice signal laser emitting module and the voice signal laser receiving module of the laser interphone experimental instrument. After that, the voice signals are magnified, reconstructed and finally transmitted to a voice output device to realize the purposes of educating and teaching. By means of the experimental instrument, the communication technique and the laser technique are combined together, so that students can get in touch with relatively advanced communication techniques and apply the scientific research and production knowledge into the learning process. Therefore, the knowledge application period is shortened.
Description
Technical field
The utility model relates to communication apparatus, is specifically related to a kind of laser intercom experiment instrument, and this experiment instrument can be used in the experimental teaching on wireless communication technology, laser technology, digital circuit, Analogical Circuit Technique and single-chip microcomputer basis.
Background technology
Laser communication as a kind of high and new technology achievement in research, receives much concern always, it is good that laser has monochromaticity, and coherence is good, good directionality and brightness high, signal can be propagated to far distance and disturb littlely, therefore study as the emphasis of radio communication aspect always.
The radio communication product existing in the market, be main mainly with infrared ray, rarely have to see using laser as the equipment of communication carrier and appear in instruments used for education, can do the laser occurring in the instrument of teaching use is fundamental purpose mainly with range finding, therefore this utility model is well by communication and laser combines and for education and instruction, filled up the blank in this market.
This equipment is propagated voice signal by laser, and one can make student touch at present the comparatively technology of advanced communication aspects, and two can deepen the understanding to communication and laser, reach the object of teaching.
Utility model content
For the defect existing in prior art, the purpose of this utility model is to provide a kind of laser intercom experiment instrument, this experiment instrument can combine communication and laser technology to be applied in experimental teaching, can make student touch at present the comparatively technology of advanced communication aspects, research and production is dissolved in study and is gone.
For achieving the above object, the technical solution adopted in the utility model is as follows: a kind of laser intercom experiment instrument is provided, comprises voice signal laser emitting module and voice signal laser pick-off module; The input end of described voice signal laser emitting module and voice signal laser pick-off module is connected with power circuit respectively.Voice signal is collected to modulation for voice signal laser emitting module and voice signal laser pick-off module and transmitting is gone out, is more finally delivered to voice-output device through amplification and reduction.
Further, the integrated circuit that described voice signal laser emitting module comprises sound acquiring, the voice signal that is connected with sound acquiring circuit of output terminal amplifies offset units, input end is connected with power circuit; Voice signal amplifies offset units and is connected with voltage comparator inlet circuit respectively with the output terminal of integrated circuit; Voltage comparator output terminal is connected with laser head circuit.
Further, described voice signal laser pick-off module comprise triode, the power amplifier being connected with described transistor circuit, the voice-output device being connected with described power amplifier circuit.
Further, described laser beam emitting head is miniwatt red laser head.
Further, described integrated circuit is 555 integrated circuit.
Further, described experiment instrument is provided with the upgrade interface made from aviation plug.
Useful technique effect of the present utility model is:
(1) experiment instrument of the present utility model is provided with voice signal laser emitting module and voice signal laser pick-off module, communication and laser technology can be combined, for education and instruction; This experiment instrument can allow student touch the cutting edge technology of wireless domain, and research and production is dissolved in study and is gone, and greatly shortens the cycle of studying in order to practise;
(2) this experiment instrument adopts miniwatt red laser head, and testing requirements can be met and check and correction aligning receiving unit can be easy to again, and minimum to human eye infringement;
(3) on this experiment instrument, be also provided with the upgrade interface made from aviation plug, greatly facilitated the upgrading of down-stream and student from main control, ROMPaq only needs a simple circuit not need emulation downloader also not need to open experiment instrument, and has greatly improved again the stability of program download with aviation plug.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model experiment instrument panel;
Fig. 2 is the schematic diagram of the utility model voice signal laser emitting module;
Fig. 3 is the schematic diagram of the utility model voice signal laser pick-off module;
Fig. 4 is the distribution plan of the each element of the utility model voice signal laser emitting module;
Fig. 5 is workflow schematic diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is further described in detail.
As shown in Figure 1, the laser intercom experiment instrument that the utility model provides, for education and instruction, comprises voice signal laser emitting module 21, voice signal laser pick-off module 31.Wherein, the input end of voice signal laser emitting module 21 and voice signal laser pick-off module 31 is connected with the power circuit of+9V respectively.This laser intercom experiment instrument with reception, voice signal is collected to modulation by the transmitting of laser and transmitting is gone out, then arrives voice-output device through amplification and final transmission of reduction, reaches the object of education and instruction.
Meanwhile, on this experiment instrument, be also provided with upgrade interface 43, display screen 42 and the switch 41 made with aviation syringe needle.The upgrade interface 43 made from aviation syringe needle, greatly facilitated the upgrading of down-stream and student from main control, program upgrade only needs a simple circuit not need emulation downloader also not need to open casing, and the stability of downloading by greatly raising program of aviation plug; When use, open switch 41, display screen 42 can show current state information and logo.
Voice signal laser emitting module 21, the voice signal amplification offset units 24 of the LM741 chip that comprise sound acquiring 22, is connected with sound acquiring 22 circuit of output terminal and 555 integrated circuit 25 that input end is connected with power circuit.The output terminal that voice signal amplifies offset units 24 and 555 integrated circuit 25 is connected with the inlet circuit of LM311 voltage comparator 26 respectively, voltage comparator 26 output terminals are connected with laser head 28 circuit, between voltage comparator 26 and laser head 28, be provided with triode 27, between sound acquiring 22 and voice signal amplification offset units 24, be provided with electric capacity 23.Be convenient to again aim at receiving unit in check and correction in order to have met requirement of experiment, laser head 28 adopts miniwatt red laser head.
Voice signal laser pick-off module 31, the power amplifier 35 that comprises phototriode 32, is connected with phototriode 32 collector terminal circuit, the voice-output device 36 being connected with power amplifier 35 circuit; Between phototriode 32 and power amplifier 35, be provided with electric capacity 33, between electric capacity 33 and power amplifier 35, be provided with voice actuated device 34.Voice-output device 36 is connected with voice-output device interface 45, carries out the broadcasting of sound.Voice actuated device 34 is connected with voice actuated device interface 44.Voice-output device is microphone loudspeaker.
As shown in Figure 2, telltale hole in sound acquiring 22 and capacitor C 4 left end holes couple together, 6 pin of LM741 are connected with voice signal instrument connection, the triangular wave instrument connection of U11 is connected with triangular signal instrument connection on U2 limit, signal output couples together with control signal hole, the red line of laser head and laser+be connected, black line and laser-be connected.
As shown in Figure 3, sound gathers by acquiring unit, after amplifying offset units amplification through the voice signal of a LM741 chip, voice signal filtering is adjusted, relatively sample and obtain the different square-wave signal of pulsewidth by LM311 signal reshape unit with the triangular wave that 555 integrated circuit produce, pass through the amplification of laser drive circuit and 8050 triodes, driving laser head obtains to be launched again.As shown in Figure 4, receiving end is that phototriode receives, and the signal that reception gets just can be delivered to voice-output device through electric capacity every direct amplification and restore sound.Due to laser, to have monochromaticity good, and coherence is good, good directionality and brightness advantages of higher, and it is far away than infrared transmission that the voice signal of its propagation can reach very high reduction degree and propagation distance.
The transmission of laser, due to transmission be that voice signal finally can be reduced into sound, undistorted in order to ensure to greatest extent after sound-reducing like this, adopt the carrier frequency of 44KHZ as transfer voice.Can well reduce like this transmission sound.This chamber adopts the mode of SPWM modulation as propagated laser voice signal, has reduced to a great extent the media such as air to the interference causing in communication process.
Workflow of the present utility model as shown in Figure 5, when use, audio connecting cord one end is inserted in the earphone jack that on panel, sound obtains, one edge joint computer or handset earphone jack, after powering on, check and correction laser head makes it the laser pick-off device on direct projection receiver module, suitably regulates volume adjustment device can obtain the sound in Laser Transmission past.
Obviously, those skilled in the art can carry out various changes and modification and not depart from spirit and scope of the present utility model the utility model.Like this, if these amendments of the present utility model and within modification belongs to the scope of the utility model claim and equivalent technology thereof, the utility model is also intended to comprise these changes and modification interior.
Claims (6)
1. a laser intercom experiment instrument, is characterized in that: comprise voice signal laser emitting module (21) and voice signal laser pick-off module (31); Described voice signal laser emitting module (21) and voice signal laser pick-off module (31) input end are connected with power circuit respectively; Voice signal is collected to modulation for voice signal laser emitting module and voice signal laser pick-off module and transmitting is gone out, is more finally delivered to voice-output device (36) through amplification and reduction.
2. laser intercom experiment instrument as claimed in claim 1, is characterized in that: the voice signal that described voice signal laser emitting module (21) comprises sound acquiring (22), be connected with sound acquiring (22) circuit of output terminal amplifies the integrated circuit (25) that offset units (24), input end are connected with power circuit; Voice signal amplifies offset units (24) and is connected with voltage comparator (26) inlet circuit respectively with the output terminal of integrated circuit (25); Voltage comparator (26) output terminal is connected with laser head (28) circuit.
3. laser intercom experiment instrument as claimed in claim 1, is characterized in that: described voice signal laser pick-off module (31) comprises triode (32), the power amplifier (35) being connected with described triode (33) circuit, the voice-output device (36) being connected with described power amplifier (35) circuit of output terminal.
4. laser intercom experiment instrument as claimed in claim 2, is characterized in that: described laser head (28) is miniwatt red laser head.
5. laser intercom experiment instrument as claimed in claim 2, is characterized in that: described integrated circuit (25) is 555 integrated circuit.
6. the laser intercom experiment instrument as described in claim 1-5 any one, is characterized in that: described experiment instrument is provided with the upgrade interface (43) made from aviation plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320859318.6U CN203706544U (en) | 2013-12-24 | 2013-12-24 | Laser interphone experimental instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320859318.6U CN203706544U (en) | 2013-12-24 | 2013-12-24 | Laser interphone experimental instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203706544U true CN203706544U (en) | 2014-07-09 |
Family
ID=51056948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320859318.6U Expired - Fee Related CN203706544U (en) | 2013-12-24 | 2013-12-24 | Laser interphone experimental instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203706544U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108847091A (en) * | 2018-04-24 | 2018-11-20 | 山东大学 | A kind of instrument and meter and automated integrated experimental device |
-
2013
- 2013-12-24 CN CN201320859318.6U patent/CN203706544U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108847091A (en) * | 2018-04-24 | 2018-11-20 | 山东大学 | A kind of instrument and meter and automated integrated experimental device |
| CN108847091B (en) * | 2018-04-24 | 2020-08-28 | 山东大学 | Instrument and meter and automatic comprehensive experiment device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 Termination date: 20161224 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |