CN113992269A - Visible light communication LED drive modulation system based on bluetooth regulation and control - Google Patents
Visible light communication LED drive modulation system based on bluetooth regulation and control Download PDFInfo
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- CN113992269A CN113992269A CN202111264758.2A CN202111264758A CN113992269A CN 113992269 A CN113992269 A CN 113992269A CN 202111264758 A CN202111264758 A CN 202111264758A CN 113992269 A CN113992269 A CN 113992269A
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- 238000004891 communication Methods 0.000 title claims abstract description 37
- 230000033228 biological regulation Effects 0.000 title claims abstract description 17
- 230000003287 optical effect Effects 0.000 claims abstract description 23
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 4
- 238000005286 illumination Methods 0.000 abstract description 14
- 230000010354 integration Effects 0.000 abstract description 4
- 230000006870 function Effects 0.000 description 10
- 239000003990 capacitor Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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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
- H04B10/50—Transmitters
- H04B10/501—Structural aspects
- H04B10/502—LED transmitters
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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
- H04B10/50—Transmitters
- H04B10/516—Details of coding or modulation
Abstract
The application discloses visible light communication LED drive modulation system based on bluetooth regulation and control includes: the LED lamp comprises a power supply module, a voltage stabilizing module, a control circuit module and an LED module; the power supply module is used for supplying power to the control circuit module and the LED module; the voltage stabilizing module is used for performing voltage stabilizing conversion on the voltage provided by the power supply module to the control circuit module; the control circuit module is used for acquiring and storing transmission data through Bluetooth, transmitting the transmission data and outputting an optical signal instruction; the LED module is used for generating an optical signal according to the optical signal instruction and completing visible light communication LED driving modulation. This application can be when providing stable white light illumination for indoor, through cell-phone end wireless control bluetooth module, realized illumination communication integration function.
Description
Technical Field
The application relates to the technical field of visible light communication and LED lighting, in particular to a visible light communication LED driving modulation system based on Bluetooth regulation.
Background
As a novel wireless communication mode, the visible light communication technology has the advantages of having the function of illumination, simultaneously having rich bandwidth resources and higher safety, being suitable for places sensitive to electromagnetic interference and having great significance. The method comprises the steps of adopting an LED as an information light source to emit high-frequency flickering signals which are difficult to observe by human eyes as optical signals to be transmitted in free space, simultaneously converting the received optical signals into electric signals by using a photoelectric conversion device, then carrying out amplification, filtering and other processing, and demodulating the electric signals so as to realize the communication function. However, in the current indoor environment, most LED lamps only play a role of illumination, and are not applied to the field of optical communication.
Disclosure of Invention
To above-mentioned problem, this application provides a visible light communication LED drive modulation system based on bluetooth regulation and control to solve the technical problem that exists among the prior art, can be for indoor stable white light illumination that provides, through cell-phone end wireless control bluetooth module, realized illumination communication integration function.
In order to achieve the above object, the present application provides a visible light communication LED driving modulation system based on bluetooth modulation, including: the LED lamp comprises a power supply module, a voltage stabilizing module, a control circuit module and an LED module;
the power supply module is used for supplying power to the control circuit module and the LED module;
the voltage stabilizing module is used for performing voltage stabilizing conversion on the voltage provided by the power supply module to the control circuit module;
the control circuit module is used for acquiring data to be transmitted and generating an optical signal instruction according to the data to be transmitted;
and the LED module is used for generating an optical signal according to the optical signal instruction to complete visible light communication LED drive modulation.
Preferably, the power supply module adopts a 5V power supply module.
Preferably, the operation of the voltage stabilization module includes: and converting the 5V direct current source of the power supply module into a 3.3V direct current source.
Preferably, the control circuit module comprises a bluetooth unit, a storage unit and a control unit;
the Bluetooth unit is used for acquiring data to be transmitted in a data transparent transmission mode;
the storage unit is used for storing the data to be transmitted;
the control unit is used for converting the data to be transmitted into the optical signal instruction according to preset frequency and time delay.
Preferably, the control unit adopts an STM32 single chip microcomputer.
Preferably, the working process of the control unit comprises: and reading the data to be transmitted in the storage unit, coding the data to be transmitted based on an on-off keying modulation mode to obtain a modulation signal, and outputting an optical signal instruction according to the modulation signal.
Preferably, the control unit further comprises a MOSFET switch tube.
Preferably, the LED module is connected to the MOSFET switch tube, and performs visible light communication in real time according to the frequency and the time delay of the transmission signal.
The application discloses following technological effect:
the application discloses a visible light communication LED driving modulation system based on Bluetooth regulation, which not only can provide stable white light illumination for the indoor, but also realizes the illumination and communication integrated function through wirelessly controlling a Bluetooth module at a mobile phone end; and on the one hand for indoor stable white light illumination that provides, on the other hand passes through under the condition of cell-phone end wireless control bluetooth module, need not store modulation code data in circuit board system in advance, greatly increased convenience and feasibility, realized illumination communication integration function.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for a person skilled in the art to obtain other drawings without any inventive exercise.
FIG. 1 is a schematic block diagram of a system according to an embodiment of the present application;
FIG. 2 is a schematic circuit diagram of an AMS117 voltage regulation module according to an embodiment of the present disclosure;
fig. 3 is a schematic circuit diagram of a control circuit module according to an embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, the present application is described in further detail with reference to the accompanying drawings and the detailed description.
Referring to fig. 1, the present embodiment provides a visible light communication LED driving modulation system based on bluetooth modulation, including: the LED lamp comprises a power supply module, a voltage stabilizing module, a control circuit module and an LED module.
The power supply module is used for supplying power to the control circuit module and the LED module; the voltage stabilizing module is used for performing voltage stabilizing conversion on the voltage provided by the power supply module to the control circuit module; the control circuit module is used for acquiring data to be transmitted and generating an optical signal instruction according to the data to be transmitted; the LED module is used for generating an optical signal according to the optical signal instruction and completing visible light communication LED driving modulation.
In this embodiment, the power supply module is a 5V dc power supply module. And the voltage stabilizing module converts the 5V direct current source of the power supply module into a 3.3V direct current source according to the voltage requirement of the control circuit module. Furthermore, the voltage stabilizing module can provide conversion of different voltage grades according to the power utilization requirements of other modules.
In this embodiment, the control circuit module includes a bluetooth unit, a storage unit, and a control unit; the Bluetooth unit acquires data to be transmitted in a data transparent transmission mode; the storage unit stores received data to be transmitted in advance; and the control unit converts the data to be transmitted into the optical signal instruction according to preset frequency and time delay.
In the embodiment, the control unit adopts STM32 singlechip, and its working process includes: and acquiring stored data to be transmitted, coding the data to be transmitted based on an on-off keying modulation mode to obtain a modulation signal, and outputting an optical signal instruction according to the modulation signal. Further, the control unit further comprises a MOSFET switch tube. The LED module is connected with the grid electrode of the MOSFET switch tube and carries out visible light communication in real time according to the frequency and time delay of the transmission signal. In the embodiment, the positive terminal of the LED module is connected to a 5V power supply, the negative terminal is connected to the drain of the MOSFET, the source is grounded, and the gate receives an electrical signal of the triode U4. Further, the LED module also adopts an LED lamp to realize the display of optical signals.
The working process of the visible light communication LED driving modulation system based on Bluetooth regulation and control is as follows: and the AMS117 voltage stabilizing module is responsible for converting a 5V direct current source into a 3.3V direct current source and supplying power to the STM32 minimum system and the Bluetooth module in the control circuit module. The Bluetooth unit in the control circuit module has a data transparent transmission function and is responsible for transmitting binary 0 and 1 data and storing the binary data in a circuit board system, the STM32 minimum system in the control circuit module outputs the obtained data to current at a certain frequency and set time delay to complete modulation, and the LED lamp flickers at high speed at the same frequency and time delay under the conduction of high-frequency current to generate an optical signal.
In this embodiment, the control circuit module further comprises an HC-02 bluetooth module, an STM32 minimum system, and an LED driving circuit. Data that send when the cell-phone end are received the back through the bluetooth unit, transmit STM32 through serial communication and encode, STM32 coding produces the modulation signal based on-off keying (OOK) modulation mode, and this signal passes through LED drive circuit, and wherein switch MOSFET pipe can control LED light and go out along with modulation signal synchro switch, realizes the change of signal of telecommunication to light signal to realize the visible light communication function.
Referring to fig. 2, in the AMS117 regulator module, a 5V power supply is converted into a 3.3V dc output after passing through a rectifier and a filter capacitor. The input capacitor of the voltage stabilizing module contributes to obtaining better transmission characteristics, and the output capacitor suppresses the ripple of the output voltage, so that the control circuit module works in a more stable state.
Referring to fig. 3, the function of the control module is to generate a modulated signal. After the mobile phone terminal uploads the data file and the application code to the STM32 minimum system through the HC-02 Bluetooth module, the data are stored in the memory. The stored data is then used to generate a modulated signal that is transmitted to the gate of the MOSFET switch at U3. Then, the MOSFET switch tube will be in the on or off state according to the gate signal, and then the LED will also work synchronously with the switch tube. Meanwhile, a first-level triode is additionally arranged between the IO port of the single chip microcomputer and the MOSFET, so that the driving voltage of the MOS tube is increased, and the stability of the switching tube working in an OOK modulation mode is ensured.
The application discloses following technological effect:
the method and the device can provide stable white light illumination indoors and simultaneously realize illumination and communication integrated functions through the wireless control Bluetooth unit at the mobile phone end; and on the one hand for indoor stable white light illumination that provides, on the other hand passes through the cell-phone end wireless control bluetooth unit's the condition, need not store modulation code data in the circuit board system in advance, greatly increased convenience and feasibility, realized illumination communication integration function.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus once an item is defined in one figure, it need not be further defined and explained in subsequent figures, and moreover, the terms "first", "second", "third", etc. are used merely to distinguish one description from another and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present application, and are used for illustrating the technical solutions of the present application, but not limiting the same, and the scope of the present application is not limited thereto, and although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope disclosed in the present application; such modifications, changes or substitutions do not depart from the spirit and scope of the present disclosure, which should be construed in light of the above teachings. Are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (8)
1. A visible light communication LED drive modulation system based on bluetooth regulation and control, characterized by comprising: the LED lamp comprises a power supply module, a voltage stabilizing module, a control circuit module and an LED module;
the power supply module is used for supplying power to the control circuit module and the LED module;
the voltage stabilizing module is used for performing voltage stabilizing conversion on the voltage provided by the power supply module to the control circuit module;
the control circuit module is used for acquiring data to be transmitted and generating an optical signal instruction according to the data to be transmitted;
and the LED module is used for generating an optical signal according to the optical signal instruction to complete visible light communication LED drive modulation.
2. The visible light communication LED driving modulation system based on Bluetooth regulation and control as claimed in claim 1, wherein the power supply module adopts a 5V power supply module.
3. The LED driving modulation system for visible light communication based on Bluetooth regulation and control of claim 2, wherein the operation of the voltage regulation module comprises: and converting the 5V direct current source of the power supply module into a 3.3V direct current source.
4. The visible light communication LED driving modulation system based on Bluetooth regulation and control as claimed in claim 1, wherein the control circuit module comprises a Bluetooth unit, a storage unit, a control unit;
the Bluetooth unit is used for acquiring data to be transmitted in a data transparent transmission mode;
the storage unit is used for storing the data to be transmitted;
the control unit is used for converting the data to be transmitted into the optical signal instruction according to preset frequency and time delay.
5. The visible light communication LED driving modulation system based on Bluetooth regulation and control of claim 4, wherein the control unit adopts an STM32 single chip microcomputer.
6. The LED driving modulation system for visible light communication based on Bluetooth regulation and control of claim 4, wherein the working process of the control unit comprises: and reading the data to be transmitted in the storage unit, coding the data to be transmitted based on an on-off keying modulation mode to obtain a modulation signal, and outputting an optical signal instruction according to the modulation signal.
7. The Bluetooth regulation-based visible light communication LED drive modulation system of claim 6, wherein the control unit further comprises a MOSFET switch tube.
8. The visible light communication LED driving modulation system based on Bluetooth regulation and control of claim 7, wherein the LED module is connected with the MOSFET switching tube and performs visible light communication in real time according to the frequency and time delay of the transmission signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111264758.2A CN113992269A (en) | 2021-10-28 | 2021-10-28 | Visible light communication LED drive modulation system based on bluetooth regulation and control |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111264758.2A CN113992269A (en) | 2021-10-28 | 2021-10-28 | Visible light communication LED drive modulation system based on bluetooth regulation and control |
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| CN113992269A true CN113992269A (en) | 2022-01-28 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104038284A (en) * | 2014-06-10 | 2014-09-10 | 南京复实通讯科技有限公司 | Visible light communication system and method |
| CN203933634U (en) * | 2014-06-10 | 2014-11-05 | 南京复实通讯科技有限公司 | A kind of device of visible light communication |
| CN207995094U (en) * | 2018-03-22 | 2018-10-19 | 成骏伟 | Visible light communication emitter based on white light LEDs |
| CN111601421A (en) * | 2020-05-26 | 2020-08-28 | 深圳市南科信息科技有限公司 | Visible light communication LED lamp and system regulated and controlled through Bluetooth |
| CN113112720A (en) * | 2021-03-31 | 2021-07-13 | 华南理工大学 | Intelligent evacuation guidance system based on visible light communication |
-
2021
- 2021-10-28 CN CN202111264758.2A patent/CN113992269A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104038284A (en) * | 2014-06-10 | 2014-09-10 | 南京复实通讯科技有限公司 | Visible light communication system and method |
| CN203933634U (en) * | 2014-06-10 | 2014-11-05 | 南京复实通讯科技有限公司 | A kind of device of visible light communication |
| CN207995094U (en) * | 2018-03-22 | 2018-10-19 | 成骏伟 | Visible light communication emitter based on white light LEDs |
| CN111601421A (en) * | 2020-05-26 | 2020-08-28 | 深圳市南科信息科技有限公司 | Visible light communication LED lamp and system regulated and controlled through Bluetooth |
| CN113112720A (en) * | 2021-03-31 | 2021-07-13 | 华南理工大学 | Intelligent evacuation guidance system based on visible light communication |
Non-Patent Citations (2)
| Title |
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| 刘正翔: "基于STM32的可见光通信系统之OOK调制技术" * |
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Application publication date: 20220128 |