CN106601085A - Photoelectric communication system experiment platform and measuring method - Google Patents
Photoelectric communication system experiment platform and measuring method Download PDFInfo
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- CN106601085A CN106601085A CN201611103216.6A CN201611103216A CN106601085A CN 106601085 A CN106601085 A CN 106601085A CN 201611103216 A CN201611103216 A CN 201611103216A CN 106601085 A CN106601085 A CN 106601085A
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Abstract
The invention discloses a photoelectric communication system experiment platform and a measuring method. The platform comprises a signal generator, a signal transmission carrier light source, a signal transmission medium, and a photoelectric conversion sensor, the signal generator is provided with a waveform selection button, a frequency adjusting button, a frequency display window, a signal amplitude adjusting knob and a signal output connecting wire, and the signal transmission carrier light source is provided with red laser, green laser, blue laser, light emitting diode red light, light emitting diode green light, light emitting diode blue light, light emitting diode orange light, light emitting diode yellow light, light emitting diode purple light, an infrared light source, a light source intensity adjusting knob, a light source selection connecting wire, a light source selection jack, and optical fiber jacks. According to the platform and the measuring method, data changes of transmission signals with different frequencies directly modulated with the light sources to form optical waves and through optical fiber transmission and photoelectric conversion can be observed and measured, and the relation between the transmission signal frequency and the signal intensity and the relation between the light-guiding optical fiber curvature change the transmission signal loss are explored.
Description
Technical field
The present invention relates to physics experiment teaching instrument and measuring method, more particularly to a kind of photoelectric communication system experiment porch and
Measuring method.
Background technology
In the current information age, the message capacity of original electric telecommunication systems far can not meet actual need
Will, the substitute is optical communication system.Optic communication can be divided into atmospheric communication and fiber optic communication.Atmospheric communication be light in an atmosphere
The communication mode of propagation, is easily absorbed by air, is scattered, reflecting interference and make attenuated optical signal, and the direction of propagation becomes
Change, atmospheric communication can be used for the information transfer between artificial satellite or spacecraft；Fiber optic communication is fine in photoconduction using laser
Propagate in dimension come transmission information message capacity it is big, little, good confidentiality is lost.
Photoelectric communication system experimental platform is the university that the optical knowledge on basis is combined closely with the science and technology in modern times
Physics experiment teaching instrument.By the experiment on platform, the characteristic of various optics can be further appreciated that, understood in optic communication
Most basic light modulation, light transmission, the ultimate principle of light-receiving and technology, can improve student learning interest, experimental skill, expansion
Exhibition the scope of one's knowledge, is new an experimental teaching content and teaching means.
The content of the invention
The present invention seeks to overcome the deficiencies in the prior art, there is provided a kind of photoelectric communication system experimental platform and photoelectric communication are transmitted
Feature measurement.
A kind of photoelectric communication system experimental platform, including light-conductive optic fibre, signal waveform selection key, signal frequency show
Window, signal output anode line, signal output negative terminal line, signal amplitude adjusting knob, light source are selecting jack, signal input just
End, the external input of signal, signal input negative terminal, oscillometric signal device interface, light source select line, intensity of light source adjusting knob,
Photoelectric conversion sensor selects line, the port of electric signal output I, the port of electric signal output II, photoelectric conversion sensor to select to insert
Hole, photocell sensor and fiber optic hub, light sensitive diode sensor and fiber optic hub, the first light-conductive optic fibre insertion interface, light
Sensing resistance transducer and fiber optic hub, infrared light supply and fiber optic hub, light emitting diode purple light and fiber optic hub, light emitting diode
Gold-tinted and fiber optic hub, light emitting diode orange light and fiber optic hub, blue light of LED and fiber optic hub, light emitting diode are green
Light and fiber optic hub, light emitting diode HONGGUANG and fiber optic hub, the 5 centimetres of windings of light-conductive optic fibre bending diameter are enclosed, light-conductive optic fibres are curved
4 centimetres of right and wrong footpath winding circle, 3 centimetres of winding circles of light-conductive optic fibre bending diameter, 2 centimetres of light-conductive optic fibre bending diameter wind circle, lead
1 centimetre of winding circle of light fibre-optical bending diameter, blue laser and fiber optic hub, green laser and fiber optic hub, red laser and fiber optic hub,
Light-conductive optic fibre fixed support, signal frequency regulating key, the second light-conductive optic fibre insertion interface, thread managing table；
Wherein signal output anode line insert port is signal input anode, and signal output negative terminal line insert port is signal input
Negative terminal, it is system that oscillometric signal device interface accesses oscillograph input channel, 5 centimetres of winding circles of light-conductive optic fibre bending diameter by wire
The model circle of 5 centimetres of diameter is made, 4 centimetres of winding circles of light-conductive optic fibre bending diameter are the model circle for being fabricated to 4 centimetres of diameter, are led
3 centimetres of winding circles of light fibre-optical bending diameter are the model circle for being fabricated to 3 centimetres of diameter, and 2 centimetres of light-conductive optic fibre bending diameter winds
Enclose to be fabricated to the model circle of 2 centimetres of diameter, 1 centimetre of winding circle of light-conductive optic fibre bending diameter is the mould for being fabricated to 1 centimetre of diameter
Type circle, thread managing table is integrated by model circle；
The experiment porch be broadly divided into signal generator part, signal transmission carrier light source part, transmission signal vector part,
Photoelectric conversion sensor part；Wherein
Signal generator part：Including signal waveform selection key, signal frequency regulating key, signal frequency display window, signal
Amplitude adjusted knob, signal output anode line, signal output negative terminal line；
Signal transmission carrier light source part：Including light source select jack, light source select line, intensity of light source adjusting knob, it is red swash
It is light and fiber optic hub, green laser and fiber optic hub, blue laser and fiber optic hub, light emitting diode HONGGUANG and fiber optic hub, luminous
Diode green glow and fiber optic hub, blue light of LED and fiber optic hub, light emitting diode orange light and fiber optic hub, luminous two
Pole pipe gold-tinted and fiber optic hub, light emitting diode purple light and fiber optic hub, infrared light supply and fiber optic hub；
Transmission signal vector part：Including light-conductive optic fibre, the second light-conductive optic fibre insertion interface, the first light-conductive optic fibre insertion interface,
Thread managing table, light-conductive optic fibre fixed support；
Photoelectric conversion sensor part：Line, photoelectric conversion sensor is selected to select jack, photosensitive including photoelectric conversion sensor
Electric resistance sensor and fiber optic hub, light sensitive diode sensor and fiber optic hub, photocell sensor and fiber optic hub, the signal of telecommunication
Export I port, the port of electric signal output II.
A kind of photoelectric communication measurement of transmission characterist method using the experiment porch, it the step of it is as follows：
1）Signal output anode line is connected with signal input anode, and signal output negative terminal line is connected with signal input negative terminal.
Light source selects the selected light source jack of line insertion, such as light source to select jack.The light of the selected light source of light-conductive optic fibre insertion interface insertion
Fine jack, such as red laser and fiber optic hub.Photoelectric conversion sensor selects the selected sensor jack of line insertion, such as opto-electronic conversion
Sensor selects jack.Light-conductive optic fibre insertion interface insertion fiber optic hub corresponding with photoelectric conversion sensor selection line, such as
Photosensitive resistance sensor and fiber optic hub.Oscillometric signal device interface accesses oscillograph.Access oscillograph in the port of electric signal output I.
The port incoming transport millivoltmeter of electric signal output II；
2）Sine wave or square wave are selected by signal waveform selection key.Signal generator is changed by signal frequency regulating key
Output frequency, by signal frequency display window numerical monitor.Signal magnitude is changed by signal amplitude adjusting knob, waveform is in oscillography
Observe on device；
3）The power of selected light is changed by intensity of light source adjusting knob.Transmission signal is led with the light wave Jing after light source directly modulation
Light fiber optic conduction to photoelectric conversion sensor, the signal of telecommunication of sensor output show ripple on the connected oscillograph in I port is exported
Shape.Numerical value is shown on the ac millivoltmeter that the port of electric signal output II is connected；
4）Light-conductive optic fibre Jing thread managing tables change degree of crook by the winding circle of different-diameter, and photoelectric communication transmission is carried out respectively
Feature measurement.
Present invention experiment content deployable in physics experiment teaching enriches, and for example, explores and study various quasiconductors
The characteristic of laser instrument and light emitting diode；Grasp light modulation most basic in optic communication, light transmission, the principle of light-receiving and skill
Art；Compare and study characteristic and the technology application of various photoelectric sensors；Optical fiber curvature change is explored with transmission signal loss
Relation.Experiment content has been combined closely modern science and technology, can expand the scope of one's knowledge of student, improves physics experiment teaching quality.
Description of the drawings
Fig. 1 is photoelectric communication system experimental platform structural representation；
In figure, light-conductive optic fibre 1, signal waveform selection key 2, signal frequency display window 3, signal output anode line 4, signal are defeated
Go out negative terminal line 5, signal amplitude adjusting knob 6, light source and select jack 7, the external input 9 of signal input anode 8, signal, letter
Number input negative terminal 10, oscillometric signal device interface 11, light source select line 12, intensity of light source adjusting knob 13, opto-electronic conversion sensing
Device selects line 14, the port 15 of electric signal output I, the port 16, photoelectric conversion sensor of electric signal output II to select jack 17, light
Battery sensor and fiber optic hub 18, light sensitive diode sensor and fiber optic hub 19, light-conductive optic fibre insertion interface 20, photosensitive electricity
Resistance sensor and fiber optic hub 21, infrared light supply and fiber optic hub 22, light emitting diode purple light and fiber optic hub 23, light-emitting diodes
It is pipe gold-tinted and fiber optic hub 24, light emitting diode orange light and fiber optic hub 25, blue light of LED and fiber optic hub 26, luminous
Diode green glow and fiber optic hub 27, light emitting diode HONGGUANG and fiber optic hub 28,5 centimetres of winding circles of light-conductive optic fibre bending diameter
29th, 4 centimetres of winding circles 30 of light-conductive optic fibre bending diameter, 3 centimetres of winding circle 31, the light-conductive optic fibre bendings of light-conductive optic fibre bending diameter are straight
2 centimetres of footpath winding circle 32,1 centimetre of winding circle 33 of light-conductive optic fibre bending diameter, blue laser and fiber optic hub 34, green laser and optical fiber
Jack 35, red laser and fiber optic hub 36, light-conductive optic fibre fixed support 37, the insertion of signal frequency regulating key 38, light-conductive optic fibre
Interface 39, thread managing table 40.
Specific embodiment
As shown in figure 1, the experiment porch is broadly divided into signal generator part, signal transmission carrier light source part, signal biography
Defeated medium part, photoelectric conversion sensor part；
（1）Signal generator：Including signal waveform select button 2, signal frequency regulating key 38, signal frequency display window 3, letter
Number amplitude adjusted knob 6, signal output anode line 4, signal output negative terminal line 5.Signal input anode 8 be signal output just
The end insert port of line 4, signal input negative terminal 10 are the insert port of signal output negative terminal line 5, oscillometric signal device interface 11 by leading
Line is accessed oscillograph input channel, outer signal input 9 and is used when using outside source.
（2）Signal transmission carrier light source：Line 12, light source is selected to select jack 7, intensity of light source adjusting knob including light source
13rd, red laser and fiber optic hub 36, green laser and fiber optic hub 35, blue laser and fiber optic hub 34, light emitting diode HONGGUANG and
Fiber optic hub 28, light emitting diode green glow and fiber optic hub 27, blue light of LED and fiber optic hub 26, light emitting diode orange
Light and fiber optic hub 25, light emitting diode gold-tinted and fiber optic hub 24, light emitting diode purple light and fiber optic hub 23, infrared light supply
And fiber optic hub 22.
（3）Transmission signal vector：Including light-conductive optic fibre 1, the first light-conductive optic fibre insertion interface 20, the insertion of the second light-conductive optic fibre
Interface 39, thread managing table 40, light-conductive optic fibre fixed support 37.
5 centimetres of winding circles 29 of light-conductive optic fibre bending diameter（It is fabricated to the model circle of 5 centimetres of diameter）, light-conductive optic fibre bending it is straight
4 centimetres of footpath winding circle 30（To be fabricated to the model circle of 4 centimetres of diameter）, 3 centimetres of light-conductive optic fibre bending diameter winding circle 31（For system
It is made the model circle of 3 centimetres of diameter）, 2 centimetres of light-conductive optic fibre bending diameter winding circle 32（To be fabricated to the model of 2 centimetres of diameter
Circle）, 1 centimetre of light-conductive optic fibre bending diameter winding circle 33（To be fabricated to the model circle of 1 centimetre of diameter）, thread managing table 40 is by model circle
It is integrated.
（4）Photoelectric conversion sensor：Line 14, photoelectric conversion sensor is selected to select jack by photoelectric conversion sensor
17th, photosensitive resistance sensor and fiber optic hub 21, light sensitive diode sensor and fiber optic hub 19, photocell sensor and optical fiber
Jack 18, the port 15 of electric signal output I, the port 16 of electric signal output II constitute.
The step of photoelectric communication measurement of transmission characterist method, is as follows：
1）Signal output anode line 4 is connected with signal input anode 8, signal output negative terminal line 5 and signal input negative terminal 10
It is connected.Light source selects line 12 to be respectively connected to selected light source, such as selects red laser.Light-conductive optic fibre interface 39 inserts selected light source
Fiber optic hub, such as red laser and fiber optic hub 36.Photoelectric conversion sensor selects line to insert selected sensor jack respectively, such as
Select photosensitive resistance sensor.Light-conductive optic fibre interface 20 inserts fiber optic hub corresponding with photoelectric conversion sensor selection line,
Such as photosensitive resistance sensor and fiber optic hub 21.Oscillometric signal device interface 11 accesses oscillograph.Access the port 15 of electric signal output I
Oscillograph.The incoming transport millivoltmeter of II port of electric signal output 16.
2）Sine wave or square wave are selected by signal waveform selection key 2.Change signal by signal frequency regulating key 38 to send out
Raw device output frequency, the display frequency numerical value of signal frequency display window 3.Suitable signal is adjusted by signal amplitude adjusting knob 6 big
It is little, can observe on oscillograph.
3）The suitable light intensity of selected light source is adjusted by intensity of light source adjusting knob 13.With the light after transmission signal directly modulation
Ripple Jing light-conductive optic fibres 1 are conducted to photoelectric conversion sensor, and the signal of telecommunication after sensor conversion can be in showing that the port 15 of output I is connected
Waveform is observed on ripple device, data is read on the connected ac millivoltmeter in II port of output 16.
4）Light-conductive optic fibre（1）Jing thread managing tables（40）Degree of crook is changed by the winding circle of different-diameter.
The content of photoelectric communication measurement of transmission characterist is as follows：
1）Ten kinds of light sources select down to carry out the 3rd respectively）、4）The content of item, understands and compares semiconductor laser and light-emitting diodes
The characteristic of pipe；
2）Three types photoelectric conversion sensor selects down to carry out the 3rd respectively）、4）The content of item, understands and compares photoconductive resistance
Sensor, light sensitive diode sensor, photocell sensor characteristic；
3）The output of signal generator changes its frequency as transmission signal, observes and measure the transmission under different frequency respectively
Signal is formed after light wave by the directly modulation with light source, and the delta data of signal Jing after fiber-optic transfer, opto-electronic conversion explores letter
Relation between number frequency and transmission signal power.
4）Under certain frequency transmission signal, light-conductive optic fibre of the light wave through being wound in different-diameter circle is measured respectively and is passed
Signal intensity data after defeated, explore the relation of light-conductive optic fibre Curvature varying and transmission signal loss.
Claims (2)
1. a kind of photoelectric communication system experimental platform, it is characterised in that
Including light-conductive optic fibre（1）, signal waveform selection key（2）, signal frequency display window（3）, signal output anode line
（4）, signal output negative terminal line（5）, signal amplitude adjusting knob（6）, light source select jack（7）, signal input anode（8）、
The external input of signal（9）, signal input negative terminal（10）, oscillometric signal device interface（11）, light source select line（12）, light source strength
Degree adjusting knob（13）, photoelectric conversion sensor select line（14）, the port of electric signal output I（15）, the end of electric signal output II
Mouthful（16）, photoelectric conversion sensor select jack（17）, photocell sensor and fiber optic hub（18）, light sensitive diode sensor
And fiber optic hub（19）, the first light-conductive optic fibre insertion interface（20）, photosensitive resistance sensor and fiber optic hub（21）, infrared light supply
And fiber optic hub（22）, light emitting diode purple light and fiber optic hub（23）, light emitting diode gold-tinted and fiber optic hub（24）, it is luminous
Diode orange light and fiber optic hub（25）, blue light of LED and fiber optic hub（26）, light emitting diode green glow and optical fiber inserts
Hole（27）, light emitting diode HONGGUANG and fiber optic hub（28）, 5 centimetres of light-conductive optic fibre bending diameter winding circle（29）, light-conductive optic fibre
4 centimetres of winding circles of bending diameter（30）, 3 centimetres of light-conductive optic fibre bending diameter winding circle（31）, 2 centimetres of light-conductive optic fibre bending diameter
Winding circle（32）, 1 centimetre of light-conductive optic fibre bending diameter winding circle（33）, blue laser and fiber optic hub（34）, green laser and optical fiber
Jack（35）, red laser and fiber optic hub（36）, light-conductive optic fibre fixed support（37）, signal frequency regulating key（38）, second
Light-conductive optic fibre inserts interface（39）, thread managing table（40）；
Wherein signal output anode line（4）Insert port is signal input anode（8）, signal output negative terminal line（5）Insert port
For signal input negative terminal（10）, oscillometric signal device interface（11）Oscillograph input channel, light-conductive optic fibre bending are accessed by wire
5 centimetres of winding circles of diameter（29）To be fabricated to the model circle of 5 centimetres of diameter, 4 centimetres of winding circles of light-conductive optic fibre bending diameter（30）
To be fabricated to the model circle of 4 centimetres of diameter, 3 centimetres of winding circles of light-conductive optic fibre bending diameter（31）To be fabricated to 3 centimetres of diameter
Model circle, 2 centimetres of winding circles of light-conductive optic fibre bending diameter（32）To be fabricated to the model circle of 2 centimetres of diameter, light-conductive optic fibre bending
1 centimetre of winding circle of diameter（33）To be fabricated to the model circle of 1 centimetre of diameter, thread managing table（40）It is integrated by model circle；
The experiment porch be broadly divided into signal generator part, signal transmission carrier light source part, transmission signal vector part,
Photoelectric conversion sensor part；Wherein
Signal generator part：Including signal waveform selection key（2）, signal frequency regulating key（38）, signal frequency shows
Window（3）, signal amplitude adjusting knob（6）, signal output anode line（4）, signal output negative terminal line（5）；
Signal transmission carrier light source part：Jack is selected including light source（7）, light source select line（12）, the intensity of light source adjust rotation
Button（13）, red laser and fiber optic hub（36）, green laser and fiber optic hub（35）, blue laser and fiber optic hub（34）, luminous two
Pole pipe HONGGUANG and fiber optic hub（28）, light emitting diode green glow and fiber optic hub（27）, blue light of LED and fiber optic hub
（26）, light emitting diode orange light and fiber optic hub（25）, light emitting diode gold-tinted and fiber optic hub（24）, light emitting diode purple light
And fiber optic hub（23）, infrared light supply and fiber optic hub（22）；
Transmission signal vector part：Including light-conductive optic fibre（1）, the second light-conductive optic fibre insertion interface（39）, the first light-conductive optic fibre insert
Incoming interface（20）, thread managing table（40）, light-conductive optic fibre fixed support（37）；
Photoelectric conversion sensor part：Line is selected including photoelectric conversion sensor（14）, photoelectric conversion sensor select jack
（17）, photosensitive resistance sensor and fiber optic hub（21）, light sensitive diode sensor and fiber optic hub（19）, photocell sensor
And fiber optic hub（18）, the port of electric signal output I（15）, the port of electric signal output II（16）.
2. a kind of photoelectric communication measurement of transmission characterist method using experiment porch as claimed in claim 1, it is characterised in that it
The step of it is as follows：
1）Signal output anode line（4）With signal input anode（8）It is connected, signal output negative terminal line（5）With signal input
Negative terminal（10）It is connected, light source selects line（12）The selected light source jack of insertion, light-conductive optic fibre insertion interface（39）The selected light of insertion
The fiber optic hub in source, photoelectric conversion sensor selects line（14）The selected sensor jack of insertion, light-conductive optic fibre insertion interface
（20）Insertion selects line with photoelectric conversion sensor（14）Corresponding fiber optic hub, oscillometric signal device interface（11）Access oscillography
Device, the port of electric signal output I（15）Access oscillograph, the port of electric signal output II（16）Incoming transport millivoltmeter；
2）By signal waveform selection key（2）Sine wave or square wave are selected, by signal frequency regulating key（38）Change letter
Number generator output frequency, by signal frequency display window（3）Numerical monitor, by signal amplitude adjusting knob（6）Change signal
Size, waveform is observed on oscillograph；
3）By intensity of light source adjusting knob（13）Change the power of selected light, the light wave after transmission signal and light source directly modulation
Jing light-conductive optic fibres（1）Conduct to photoelectric conversion sensor, the signal of telecommunication of sensor output is exporting I port（15）Connected oscillography
Display waveform on device, in the port of electric signal output II（16）Numerical value is shown on connected ac millivoltmeter；
4）Light-conductive optic fibre（1）Jing thread managing tables（40）Change degree of crook by the winding circle of different-diameter, photoelectricity is carried out respectively
Communications feature measurement.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611103216.6A CN106601085A (en) | 2016-12-05 | 2016-12-05 | Photoelectric communication system experiment platform and measuring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201611103216.6A CN106601085A (en) | 2016-12-05 | 2016-12-05 | Photoelectric communication system experiment platform and measuring method |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2793853Y (en) * | 2004-07-12 | 2006-07-05 | 复旦大学 | Selective experimental equipment of photoelectric device in photo communication |
| CN200972732Y (en) * | 2006-10-31 | 2007-11-07 | 天津爱天光电子科技有限公司 | Optical fibre and optical fibre raster experimental instrument |
| CN205038885U (en) * | 2015-10-12 | 2016-02-17 | 王太军 | Multi -functional optical communication demonstration appearance |
-
2016
- 2016-12-05 CN CN201611103216.6A patent/CN106601085A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2793853Y (en) * | 2004-07-12 | 2006-07-05 | 复旦大学 | Selective experimental equipment of photoelectric device in photo communication |
| CN200972732Y (en) * | 2006-10-31 | 2007-11-07 | 天津爱天光电子科技有限公司 | Optical fibre and optical fibre raster experimental instrument |
| CN205038885U (en) * | 2015-10-12 | 2016-02-17 | 王太军 | Multi -functional optical communication demonstration appearance |
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Application publication date: 20170426 |