CN105471502A - Communication system and method based on visible light and solar panel - Google Patents
Communication system and method based on visible light and solar panel Download PDFInfo
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- CN105471502A CN105471502A CN201510901741.1A CN201510901741A CN105471502A CN 105471502 A CN105471502 A CN 105471502A CN 201510901741 A CN201510901741 A CN 201510901741A CN 105471502 A CN105471502 A CN 105471502A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/114—Indoor or close-range type systems
- H04B10/116—Visible light communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/114—Indoor or close-range type systems
- H04B10/1141—One-way transmission
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- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Communication System (AREA)
Abstract
The invention discloses a communication system and method based on visible light and a solar panel, and relates to the technical field of optical communication. The method comprises the following steps: a digital signal to be transmitted is encoded and modulated to obtain an electrical signal suitable for being transmitted in a visible light channel; through an LED lamp, the electrical signal is converted to a visible light signal to be transmitted out; the solar panel is aligned to the visible light direction, and is used for converting the received visible light signal into an electrical signal and simultaneously recycling a part of energy; the electrical signal is amplified, a part of high-frequency signal in the electrical signal is filtered out, and then analog-digital conversion is performed to recover the digital signal; and the solar panel is also used for converting light energy to electric energy, and a voltage boost and stabilizing circuit is used for converting a low voltage output from the solar panel to a stable direct voltage. The system and the method are based on low-cost hardware to achieve communication which is very low in energy consumption, and are suitable for Internet of Things environments such as sensing control and intelligent home.
Description
Technical field
The present invention relates to technical field of photo communication, specifically relate to a kind of communication system based on visible ray and solar panels and method.
Background technology
LED (LightEmittingDiode, light-emitting diode) is called as forth generation lighting source or green light source, has the features such as energy-saving and environmental protection, the life-span is long, volume is little, has been widely used in instruction and illumination.LED, as semiconductor light sources, is easy to realize High Speed Modulation, and LED-based visible light communication technology is increasingly mature in recent years, and visible light wave range is used as light carrier can realize radio communication at a high speed, therefore closely can realize illumination and information transmission simultaneously.But in existing visible light communication system, the general photodetector that adopts is as signal receiver, and cost is very high, causes commercial application limited, and especially the application of the environment of internet of things such as sensing control, Smart Home is limited.
Summary of the invention
The object of the invention is the deficiency in order to overcome above-mentioned background technology, a kind of communication system based on visible ray and solar panels and method are provided, based on low cost hardware, achieve the communication that energy consumption is extremely low, be applicable to the environment of internet of things such as sensing control, Smart Home.
The invention provides a kind of communication system based on visible ray and solar panels, this system comprises signal sending end and signal receiving end, described signal sending end comprises Signal coding unit and LED, Signal coding unit, to encoding digital signals to be sent and modulation, obtains the signal of telecommunication of applicable visible light channel transmission; The signal of telecommunication is become visible light signal and sends by LED; Signal receiving end comprises solar panels, amplifier, filter, analog to digital converter, voltage boosting and stabilizing circuit, amplifier, voltage boosting and stabilizing circuit are all connected with solar panels, amplifier, filter, analog to digital converter are connected in turn, wherein, visible ray direction aimed at by solar panels, the visible light signal received is changed into the signal of telecommunication, simultaneously recovery section energy; The signal of telecommunication amplifies by amplifier, the part high-frequency signal in filter filtering electric signal, outputting analog signal, and analog to digital converter carries out analog-to-digital conversion to analog signal, recovers digital signal; Light energy conversion is also electric energy by solar panels, and the low-voltage that solar panels export is become galvanic current pressure by voltage boosting and stabilizing circuit.
On the basis of technique scheme, described signal sending end also comprises amplifier, bias supply, and Signal coding unit, amplifier, bias supply are connected in turn with LED, and amplifier amplifies the signal of telecommunication; The signal of telecommunication after amplification is superimposed upon on the bias voltage of a direct current and exports by bias supply.
On the basis of technique scheme, described signal receiving end also comprises charhing unit, and charhing unit is connected with voltage boosting and stabilizing circuit, and the electricity of surplus stores by charhing unit.
The present invention also provides a kind of communication means based on visible ray and solar panels, comprises the following steps:
A, to encoding digital signals to be sent and modulation, obtain applicable visible light channel transmission the signal of telecommunication;
The signal of telecommunication is become visible light signal and sends by B, LED;
Visible ray direction aimed at by C, solar panels, and the visible light signal received is changed into the signal of telecommunication, simultaneously recovery section energy; Amplified by the signal of telecommunication, the part high-frequency signal in filtering electric signal, carries out analog-to-digital conversion, recovers digital signal; Light energy conversion is also electric energy by solar panels, and the low-voltage that solar panels export is become galvanic current pressure by voltage boosting and stabilizing circuit.
On the basis of technique scheme, further comprising the steps of between steps A and step B: the signal of telecommunication that applicable visible light channel is transmitted is amplified; The bias voltage that the signal of telecommunication after amplifying is superimposed upon a direct current is exported.
On the basis of technique scheme, further comprising the steps of after step C: the electricity of surplus is stored.
Compared with prior art, advantage of the present invention is as follows:
The present invention utilizes the feature of solar panels simultaneously Received signal strength and energy, unidirectional digital communication is realized by LED and solar panels, signal sending end sends visible ray information by LED, signal receiving end detects visible ray information by solar panels, receive the energy of visible ray for circuit working, the energy consumption of signal receiving end is extremely low, and hardware implementing is simple simultaneously, compact conformation, cost is very low.Therefore, the present invention is based on low cost hardware, achieve the communication that energy consumption is extremely low, be applicable to the environment of internet of things such as sensing control, Smart Home.
Accompanying drawing explanation
Fig. 1 is the structured flowchart based on the communication system of visible ray and solar panels in the embodiment of the present invention 1.
Fig. 2 is the structured flowchart based on the communication system of visible ray and solar panels in the embodiment of the present invention 2.
Fig. 3 is the structured flowchart based on the communication system of visible ray and solar panels in the embodiment of the present invention 3.
Fig. 4 is the structured flowchart based on the communication system of visible ray and solar panels in the embodiment of the present invention 4.
Embodiment
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
Embodiment 1
Shown in Figure 1, in order to meet the application under the environment of internet of things such as sensing control, Smart Home, embodiments of the invention 1 provide a kind of communication system based on visible ray and solar panels, this system comprises signal sending end and signal receiving end, signal sending end comprises Signal coding unit and LED, signal receiving end comprises solar panels, amplifier, filter, analog to digital converter, voltage boosting and stabilizing circuit, amplifier, voltage boosting and stabilizing circuit are all connected with solar panels, and amplifier, filter, analog to digital converter are connected in turn.
Embodiment 1 also provides a kind of communication means based on visible ray and solar panels, comprises the following steps:
Signal coding unit, to encoding digital signals to be sent and modulation, obtains the signal of telecommunication of applicable visible light channel transmission, such as OOK (On-OffKeying, on-off keying) signal; The signal of telecommunication is become visible light signal and sends by LED;
Visible ray direction aimed at by solar panels, and the visible light signal received is changed into the signal of telecommunication, simultaneously recovery section energy; The signal of telecommunication amplifies by amplifier, the part high-frequency signal in filter filtering electric signal, outputting analog signal, and analog to digital converter carries out analog-to-digital conversion to analog signal, recovers digital signal; Light energy conversion is also electric energy by solar panels, and the low-voltage that solar panels export is become galvanic current pressure by voltage boosting and stabilizing circuit.
Embodiment 2
Shown in Figure 2, under the stronger condition of needs illumination, signal sending end also needs to increase amplifier, bias supply.Embodiment 2 provides a kind of communication system based on visible ray and solar panels, this system comprises signal sending end and signal receiving end, signal sending end comprises the Signal coding unit, amplifier, bias supply and the LED that are connected in turn, digital signal to be sent is successively through Signal coding unit, amplifier, bias supply, LED, signal receiving end comprises solar panels, amplifier, filter, analog to digital converter, voltage boosting and stabilizing circuit, amplifier, voltage boosting and stabilizing circuit are all connected with solar panels, and amplifier, filter, analog to digital converter are connected in turn.
Embodiment 2 also provides a kind of communication means based on visible ray and solar panels, comprises the following steps:
Signal coding unit, to encoding digital signals to be sent and modulation, obtains the signal of telecommunication (such as OOK signal) of applicable visible light channel transmission; Amplifier amplifies the signal of telecommunication; The signal of telecommunication after amplification is superimposed upon on the bias voltage of a direct current and exports by bias supply; The signal of telecommunication is become visible light signal and sends by LED.
Visible ray direction aimed at by solar panels, and the visible light signal received is changed into the signal of telecommunication, simultaneously recovery section energy; The signal of telecommunication amplifies by amplifier, the part high-frequency signal in filter filtering electric signal, outputting analog signal, and analog to digital converter carries out analog-to-digital conversion to analog signal, recovers digital signal; Light energy conversion is also electric energy by signal receiving end, and the low-voltage that solar panels export is become galvanic current pressure by voltage boosting and stabilizing circuit.
Embodiment 3
Shown in Figure 3, embodiment 3 provides a kind of communication system based on visible ray and solar panels, this system comprises signal sending end and signal receiving end, signal sending end comprises Signal coding unit and LED, signal receiving end comprises solar panels, amplifier, filter, analog to digital converter, voltage boosting and stabilizing circuit, charhing unit, amplifier, voltage boosting and stabilizing circuit are all connected with solar panels, amplifier, filter, analog to digital converter are connected in turn, and charhing unit is connected with voltage boosting and stabilizing circuit.
Embodiment 3 also provides a kind of communication means based on visible ray and solar panels, comprises the following steps:
Signal coding unit, to encoding digital signals to be sent and modulation, obtains the signal of telecommunication (such as OOK signal) of applicable visible light channel transmission; The signal of telecommunication is become visible light signal and sends by LED;
Visible ray direction aimed at by solar panels, and the visible light signal received is changed into the signal of telecommunication, simultaneously recovery section energy; The signal of telecommunication amplifies by amplifier, the part high-frequency signal in filter filtering electric signal, outputting analog signal, and analog to digital converter carries out analog-to-digital conversion to analog signal, recovers digital signal; Light energy conversion is also electric energy by signal receiving end, and the low-voltage that solar panels export is become galvanic current pressure by voltage boosting and stabilizing circuit; The electricity of surplus stores by charhing unit.
Embodiment 4
Shown in Figure 4, embodiment 4 provides a kind of communication system based on visible ray and solar panels, this system comprises signal sending end and signal receiving end, signal sending end comprises the Signal coding unit, amplifier, bias supply and the LED that are connected in turn, signal receiving end comprises solar panels, amplifier, filter, analog to digital converter, voltage boosting and stabilizing circuit, charhing unit, amplifier, voltage boosting and stabilizing circuit are all connected with solar panels, amplifier, filter, analog to digital converter are connected in turn, and charhing unit is connected with voltage boosting and stabilizing circuit.
Embodiment 4 also provides a kind of communication means based on visible ray and solar panels, comprises the following steps:
Digital signal to be sent is successively through Signal coding unit, amplifier, bias supply, LED, and Signal coding unit, to encoding digital signals to be sent and modulation, obtains the signal of telecommunication (such as OOK signal) of applicable visible light channel transmission; Amplifier amplifies the signal of telecommunication; The signal of telecommunication after amplification is superimposed upon on the bias voltage of a direct current and exports by bias supply; The signal of telecommunication is become visible light signal and sends by LED;
Visible ray direction aimed at by solar panels, and the visible light signal received is changed into the signal of telecommunication, simultaneously recovery section energy; The signal of telecommunication amplifies by amplifier, the part high-frequency signal in filter filtering electric signal, outputting analog signal, and analog to digital converter carries out analog-to-digital conversion to analog signal, recovers digital signal; Light energy conversion is also electric energy by signal receiving end, and the low-voltage that solar panels export is become galvanic current pressure by voltage boosting and stabilizing circuit; The electricity of surplus stores by charhing unit.
The principle of the embodiment of the present invention is elaborated as follows:
The amplifier of signal sending end and bias supply are applicable to the occasion driving many LED, and when the modulation signal energy Direct driver LED after Signal coding is luminous, signal sending end can without amplifier and bias supply.
When the electric energy that the solar panels of signal receiving end reclaim only need support that circuit runs in short-term, signal receiving end can not have charhing unit yet.
The irradiation duration of LED should be enough to communication process, and therefore the shortest irradiation time need adjust according to traffic rate.The process of the solar panels reception signal of telecommunication of signal receiving end is carried out with the concurrent process reclaiming light energy; Signal receiving end can not only realize Received signal strength, recover energy, when solar panels receive enough energy, the function such as back information, display, configuration of being correlated with can also be realized, the actual energy that receives limits by parameters such as LED power, the angle of divergence, irradiation distance, solar panels area, solar panels transformation efficiency, circuit design, need adjust according to practical situations.
Signal sending end adopts LED to send visible light signal, and signal receiving end adopts solar panels to receive visible light signal, has the following advantages:
(1) when LED light is irradiated, assign data by illumination, the solar panels of signal receiving end receive information and light energy simultaneously; When unglazed photograph, receiving terminal can be operated in pole low energy consumption or park mode.
(2) LED sends visible ray and has directive property, can illumination and mutual with people while control.
(3) solar panels achieve power supply and optical detection simultaneously, and compact conformation, cost is extremely low.
Solar panels are a kind of devices utilizing the photovoltaic effect of crystalline silicon to produce electric energy, and its receiving spectrum scope covers whole visible-range, and the visible ray that LED sends also can be received by solar panels and produce electric energy.On the other hand, solar panels can be used as photo-detector receiving optical signals, and according to the difference such as material, size, circuit structure of solar panels, it effectively receives bandwidth can reach a few MHz or higher.Because solar panels can accept energy and information simultaneously, under therefore can be applicable to the condition of pole low energy consumption, low speed information transmission.The communication of this simple, low speed, low cost, is widely used, has larger value under the environment of internet of things such as sensing control, Smart Home.
Those skilled in the art can carry out various modifications and variations to the embodiment of the present invention, if these amendments and modification are within the scope of the claims in the present invention and equivalent technologies thereof, then these revise and modification also within protection scope of the present invention.
The prior art that the content do not described in detail in specification is known to the skilled person.
Claims (6)
1. the communication system based on visible ray and solar panels, this system comprises signal sending end and signal receiving end, it is characterized in that: described signal sending end comprises Signal coding unit and LED, Signal coding unit, to encoding digital signals to be sent and modulation, obtains the signal of telecommunication of applicable visible light channel transmission; The signal of telecommunication is become visible light signal and sends by LED; Signal receiving end comprises solar panels, amplifier, filter, analog to digital converter, voltage boosting and stabilizing circuit, amplifier, voltage boosting and stabilizing circuit are all connected with solar panels, amplifier, filter, analog to digital converter are connected in turn, wherein, visible ray direction aimed at by solar panels, the visible light signal received is changed into the signal of telecommunication, simultaneously recovery section energy; The signal of telecommunication amplifies by amplifier, the part high-frequency signal in filter filtering electric signal, outputting analog signal, and analog to digital converter carries out analog-to-digital conversion to analog signal, recovers digital signal; Light energy conversion is also electric energy by solar panels, and the low-voltage that solar panels export is become galvanic current pressure by voltage boosting and stabilizing circuit.
2. as claimed in claim 1 based on the communication system of visible ray and solar panels, it is characterized in that: described signal sending end also comprises amplifier, bias supply, Signal coding unit, amplifier, bias supply are connected in turn with LED, and amplifier amplifies the signal of telecommunication; The signal of telecommunication after amplification is superimposed upon on the bias voltage of a direct current and exports by bias supply.
3., as claimed in claim 1 or 2 based on the communication system of visible ray and solar panels, it is characterized in that: described signal receiving end also comprises charhing unit, and charhing unit is connected with voltage boosting and stabilizing circuit, the electricity of surplus stores by charhing unit.
4., based on a communication means for visible ray and solar panels, it is characterized in that, comprise the following steps:
A, to encoding digital signals to be sent and modulation, obtain applicable visible light channel transmission the signal of telecommunication;
The signal of telecommunication is become visible light signal and sends by B, LED;
Visible ray direction aimed at by C, solar panels, and the visible light signal received is changed into the signal of telecommunication, simultaneously recovery section energy; Amplified by the signal of telecommunication, the part high-frequency signal in filtering electric signal, carries out analog-to-digital conversion, recovers digital signal; Light energy conversion is also electric energy by solar panels, and the low-voltage that solar panels export is become galvanic current pressure by voltage boosting and stabilizing circuit.
5., as claimed in claim 4 based on the communication means of visible ray and solar panels, it is characterized in that: further comprising the steps of between steps A and step B: the signal of telecommunication that applicable visible light channel is transmitted is amplified; The bias voltage that the signal of telecommunication after amplifying is superimposed upon a direct current is exported.
6. the communication means based on visible ray and solar panels as described in claim 4 or 5, is characterized in that: further comprising the steps of after step C: stored by the electricity of surplus.
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
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CN107453812A (en) * | 2017-09-15 | 2017-12-08 | 重庆思柏高科技有限公司 | A kind of visible light communication processing module and dispensing device |
CN109167631A (en) * | 2018-09-19 | 2019-01-08 | 李子宪 | A kind of visible light communication device |
CN109951229A (en) * | 2019-02-28 | 2019-06-28 | 中国矿业大学 | A kind of method of information and energy common transport in visible light communication system |
CN110312290A (en) * | 2019-08-09 | 2019-10-08 | Oppo(重庆)智能科技有限公司 | Communication network switching method, device and computer readable storage medium |
CN111074806A (en) * | 2019-12-30 | 2020-04-28 | 台州市星标交通科技有限公司 | Debugging system of solar spike |
CN112367119A (en) * | 2020-10-27 | 2021-02-12 | 中国科学院半导体研究所 | Visible light self-powered communication system and communication method based on same |
CN114826401A (en) * | 2022-03-31 | 2022-07-29 | 华南理工大学 | Visible light energy-carrying communication method, system and device based on solar cell panel |
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US20130234607A1 (en) * | 2012-03-12 | 2013-09-12 | Electronics And Telecommunications Research Institute | Led lighting control apparatus and method based on visible light communication |
CN104184519A (en) * | 2014-08-26 | 2014-12-03 | 中国科学院半导体研究所 | Visible light wireless communication system with self-sufficient energy |
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CN101867412A (en) * | 2009-04-15 | 2010-10-20 | 中国科学院半导体研究所 | System and method for realizing communication by using semiconductor illumination |
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107453812A (en) * | 2017-09-15 | 2017-12-08 | 重庆思柏高科技有限公司 | A kind of visible light communication processing module and dispensing device |
CN109167631A (en) * | 2018-09-19 | 2019-01-08 | 李子宪 | A kind of visible light communication device |
CN109951229A (en) * | 2019-02-28 | 2019-06-28 | 中国矿业大学 | A kind of method of information and energy common transport in visible light communication system |
CN109951229B (en) * | 2019-02-28 | 2020-07-31 | 中国矿业大学 | Method for jointly transmitting information and energy in visible light communication system |
CN110312290A (en) * | 2019-08-09 | 2019-10-08 | Oppo(重庆)智能科技有限公司 | Communication network switching method, device and computer readable storage medium |
CN111074806A (en) * | 2019-12-30 | 2020-04-28 | 台州市星标交通科技有限公司 | Debugging system of solar spike |
CN112367119A (en) * | 2020-10-27 | 2021-02-12 | 中国科学院半导体研究所 | Visible light self-powered communication system and communication method based on same |
CN114826401A (en) * | 2022-03-31 | 2022-07-29 | 华南理工大学 | Visible light energy-carrying communication method, system and device based on solar cell panel |
CN114826401B (en) * | 2022-03-31 | 2023-10-31 | 华南理工大学 | Visible light energy-carrying communication method, system and device based on solar panel |
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Application publication date: 20160406 |