CN205810228U - A kind of visible light communication demonstration teaching aid - Google Patents
A kind of visible light communication demonstration teaching aid Download PDFInfo
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- CN205810228U CN205810228U CN201620319454.XU CN201620319454U CN205810228U CN 205810228 U CN205810228 U CN 205810228U CN 201620319454 U CN201620319454 U CN 201620319454U CN 205810228 U CN205810228 U CN 205810228U
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- transmitter
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- visible light
- audio
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Abstract
This patent discloses a kind of visible light communication demonstration teaching aid, transmitter, receiver and audio amplifier are fixed on cabinet front, external Bluetooth equipment or 3.5mm audio input interface and are connected with transmitter, and reflecting mirror can horizontally rotate in 360 ° of cabinet front, external 12V, 1A power supply.Signal is delivered to transmitter by external Bluetooth equipment or 3.5mm audio input interface, and transmitter is transferred to receiver by reflecting mirror after sending, and is connected with audio amplifier after being received machine demodulation, and transmitter, receiver and audio amplifier are all connected to 12V, 1A power supply.This visible light communication demonstration teaching aid, simple in construction, easy and simple to handle, interactive in presentation process, image presents the visible ray one as electromagnetic wave enjoyably by force, the process that portability signal transmits, student can connect the audio signal of personal terminal in addition, stir simultaneously transmitting mirror change light path to know from experience the principle of technology, make effective stimulating students ' interests in teaching process, it is easy to grasp visible light communication transmit signal principle.
Description
Technical field
This patent relates to a kind of teaching aid, the demonstration teaching aid of a kind of visible light communication.
Background technology
Light wave is ubiquitous in life, and it is can not in teaching process as one of branch most important in physics
The important step lacked.Visible light communication is as the study hotspot of the outer wireless domain of Present Domestic, and the carrier that its signal is propagated is just
It it is light wave.Use appropriate demonstration teaching aid, can the observation ability of training student, understandability, them can be helped again to analyze, think
The raising of the abilities such as dimension, it is easier to provide interdisciplinary for student, explore the chance of innovation.For middle school student, as long as exciting
Playing the interest of their study, they will put in study with the enthusiasm having one's bosom filled with positively, and classroom will become out
Putting, enliven, lively atmosphere, teaching efficiency can double naturally.For university students, it is provided that the demonstration system of a set of emerging technology
System, is conducive to the quality of their intuitivism apprehension technology, cultivates interest thus provides potential application innovation thinking.Visible ray conduct
The most ubiquitous resource, it has the advantages such as broadband, environmental protection and electromagnetic-radiation-free, complies with the one of country's promulgation simultaneously
Series energy-saving reduces discharging policy, it is seen that optic communication is following will become one of additional project important in radio communication.Drilled by this set
Show system, excite student's interest to this technology, will allow this technology of student's Active searching, thus deeply understand the principle of technology
And pluses and minuses, favourable and national cultivation this field talent.
Visible ray is as the one of electromagnetic wave, and it is widely used in illumination.And current wireless access network frequency spectrum resource is the tightest
, and electromagnetic radiation restricts it and uses, and people are highly desirable finds one can widen frequency spectrum resource, and environmental protection
Technology, therefore visible light communication technology is arisen at the historic moment.Visible light communication uses white light LEDs as light source, utilizes LED lamplight to carry
High speed light and shade flash signal transmit information, receiving terminal uses light-sensitive device to be received demodulation, it is seen that optical communication technique is
Illuminate the degree of depth with communication to couple.Owing to the development course of this technology is shorter, current numerous students and the common people are also difficult to touch
This type of new technique, concrete technology is the most complicated, by this demonstration teaching aid, more people can be allowed to understand this technology.
Summary of the invention
The purpose of this patent is to provide a kind of operation simple, interactive by force, the interesting visible light communication of demonstrative process is drilled
Display teaching aid.
For achieving the above object, a kind of visible light communication demonstration teaching aid, input including bluetooth equipment or 3.5mm audio frequency and connect
Mouth 1, transmitter 2, reflecting mirror 3, receiver 4, audio amplifier 5 and power supply 6；Wherein:
Described transmitter 2, receiver 4, audio amplifier 5 are all connected with power supply 6；Described bluetooth equipment or the input of 3.5mm audio frequency
Interface 1 is connected with transmitter 2, and audio signal is delivered to transmitter 2；Bluetooth equipment or 3.5mm audio input interface 1 input
The 1MHz triangular wave that transmitter 2 is produced by signal is modulated, and the pwm signal that modulation produces carries out intensity modulated with can to light source
See that the form of optical signal is launched；The visible light signal that transmitter 2 produces is reflexed to receiver 4 by reflecting mirror 3；Visible ray is believed
Number after receiver 4 condenser system, the PIN photoelectric detector of receiver 4 after carrying out opto-electronic conversion, then through low noise across resistance
Signal is amplified by amplifying circuit, is recovered acoustical signal by the RC low-pass filter circuit of cut-off frequency 50KHz；Described connect
Receipts machine 4 is attached with audio amplifier 5, transmits a signal to audio amplifier.
This patent has the beneficial effects that:
The visible light communication demonstration teaching aid of the application, simple in construction, easy and simple to handle, interactive by force, it is a kind of for utilizing light wave
The characteristic of electromagnetic wave, is input to transmitter audio signal, and the signal after transmitter modulation is through LED emission, and audio signal is just
Propagating with form of light waves, through reflector alignment light path, receiver just can receive the light wave of the information of carrying and demodulate, and finally leads to
Cross audio amplifier and play the music signal received.In presentation process, image presents the visible ray one as electromagnetic wave enjoyably,
The process of portability signal transmission, student can connect the audio signal of personal terminal in addition, stirs transmitting mirror change light path simultaneously and comes
The principle of cognition technology, makes effective stimulating students ' interests in teaching process, it is easy to grasp the principle of visible light communication transmission signal.
Accompanying drawing explanation
Fig. 1 is that schematic diagram is opened in the structure audio frequency transmission of visible light communication demonstration teaching aid.
Fig. 2 is that schematic diagram is closed in the structure audio frequency transmission of visible light communication demonstration teaching aid.
Fig. 3 is the flow chart of this patent detailed description of the invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, this patent is illustrated:
Step 1: open chassis power supply switch
Step 2: handheld terminal is carried out with bluetooth equipment (1) pairing and is connected
Step 3: after Bluetooth pairing success, open a terminal upper music player, clicks on and plays music
Step 4: rotating reflecting mirror (4) and be adjusted to shown in Fig. 1 by light-path, audio amplifier carries out music
Step 5: rotate reflecting mirror (4) and be adjusted to shown in Fig. 2 by light-path, if not having transmitter light to enter receiver, sound
Happy broadcasting will stop.
Claims (1)
1. a visible light communication demonstration teaching aid, including bluetooth equipment or 3.5mm audio input interface (1), transmitter (2),
Reflecting mirror (3), receiver (4), audio amplifier (5) and power supply (6)；It is characterized in that:
Described transmitter (2), receiver (4), audio amplifier (5) are all connected with power supply (6)；Described bluetooth equipment or 3.5mm audio frequency
Input interface (1) is connected with transmitter (2), and audio signal is delivered to transmitter (2)；Bluetooth equipment or the input of 3.5mm audio frequency
The 1MHz triangular wave that transmitter (2) is produced by the signal that interface (1) inputs is modulated, and the pwm signal that modulation produces is to light source
Carry out intensity modulated to launch with the form of visible light signal；The visible light signal that transmitter (2) is produced by reflecting mirror (3) is anti-
It is mapped to receiver (4)；Visible light signal, after receiver (4) condenser system, is entered by the PIN photoelectric detector of receiver (4)
After row opto-electronic conversion, then signal is amplified, by the RC low pass filtered of cut-off frequency 50KHz across resistance amplifying circuit through low noise
Acoustical signal is recovered by wave circuit；Described receiver (4) is attached with audio amplifier (5), transmits a signal to audio amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620319454.XU CN205810228U (en) | 2016-04-15 | 2016-04-15 | A kind of visible light communication demonstration teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620319454.XU CN205810228U (en) | 2016-04-15 | 2016-04-15 | A kind of visible light communication demonstration teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205810228U true CN205810228U (en) | 2016-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620319454.XU Expired - Fee Related CN205810228U (en) | 2016-04-15 | 2016-04-15 | A kind of visible light communication demonstration teaching aid |
Country Status (1)
| Country | Link |
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| CN (1) | CN205810228U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105761592A (en) * | 2016-04-15 | 2016-07-13 | 中国科学院上海技术物理研究所 | Visible light communication demonstration teaching aid |
| CN110310549A (en) * | 2019-07-01 | 2019-10-08 | 大连海事大学 | A kind of visible light communication, positioning research and teaching integrated experimental device |
| CN110639215A (en) * | 2019-10-08 | 2020-01-03 | 凯奇集团有限公司 | Interactive installation based on optics reflection/refraction |
-
2016
- 2016-04-15 CN CN201620319454.XU patent/CN205810228U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105761592A (en) * | 2016-04-15 | 2016-07-13 | 中国科学院上海技术物理研究所 | Visible light communication demonstration teaching aid |
| CN110310549A (en) * | 2019-07-01 | 2019-10-08 | 大连海事大学 | A kind of visible light communication, positioning research and teaching integrated experimental device |
| CN110310549B (en) * | 2019-07-01 | 2021-09-07 | 大连海事大学 | Visible light communication, location scientific research teaching integration experimental apparatus |
| CN110639215A (en) * | 2019-10-08 | 2020-01-03 | 凯奇集团有限公司 | Interactive installation based on optics reflection/refraction |
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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: 20161214 Termination date: 20200415 |
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| CF01 | Termination of patent right due to non-payment of annual fee |