CN203827352U - Visible light duplex communication system used for carrying out information transmission between Internet and intelligent equipment - Google Patents
Visible light duplex communication system used for carrying out information transmission between Internet and intelligent equipment Download PDFInfo
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- CN203827352U CN203827352U CN201420263684.XU CN201420263684U CN203827352U CN 203827352 U CN203827352 U CN 203827352U CN 201420263684 U CN201420263684 U CN 201420263684U CN 203827352 U CN203827352 U CN 203827352U
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Abstract
A visible light duplex communication system used for carrying out information transmission between Internet and intelligent equipment relates to the visible light duplex communication field. In current visible light communication, the system is complex; luminescence power is limited and a communication distance is short. By using the system of the utility model, the above problems are solved. The visible light duplex communication system used for carrying out information transmission between the Internet and the intelligent equipment comprises a protocol converter, a TTL to RS232 interface conversion device, a first transmit-receive end, a second transmit-receive end and a FT232RL interface conversion device. The protocol converter accesses the Internet and is used for realizing conversion from a TCP/IP protocol to a UART protocol. The first transmit-receive end and the protocol converter carry out data interaction. The first transmit-receive end and the second transmit-receive end realize wireless communication through a light/electricity conversion mode. The second transmit-receive end and the intelligent equipment carry out data interaction. The system is suitable for carrying out duplex communication between the Internet and the intelligent equipment.
Description
Technical field
The utility model relates to the communications field, is specifically related to visible ray duplex communication field.
Background technology
In existing visible light communication there is the problem that luminous power is limited, communication distance is limited in transmitting terminal, and current, most systems is all used single LEDs or customization LED array, exist cost high, with the distant problem of practical application, in the realization of VLC up link, utilize the modes such as infrared, RF, bluetooth, its core is to utilize different communication mode to avoid the interference of uplink downlink, and overall implementation is more difficult, and system is more complicated.
Utility model content
There is system complex, the short problem of luminous power finite sum communication distance in order to solve existing visible light communication in the utility model, has proposed the visible ray duplex communication system for carrying out information transmission between the Internet and smart machine,
Comprise protocol converter, TTL RS 232 interface conversion device, the first sending and receiving end, the second sending and receiving end and FT232RL interface conversion device for the visible ray duplex communication system that carries out information transmission between the Internet and smart machine, described protocol converter accessing Internet, for realizing the conversion of ICP/IP protocol to UART agreement, the first sending and receiving end and protocol converter carry out data interaction, radio communication is realized by light/electric conversion regime in the first sending and receiving end and the second sending and receiving end, and the second sending and receiving end and smart machine carry out data interaction.
Described the first sending and receiving end comprises the first receiving terminal and the first transmitting terminal, the second sending and receiving end comprises the second receiving terminal and the second transmitting terminal, and the circuit structure of the first receiving terminal is identical with the circuit structure of the second receiving terminal, the circuit structure of the first transmitting terminal is identical with the circuit structure of the second transmitting terminal
The first transmitting terminal comprises drive circuit, LED array and power supply, the Transistor-Transistor Logic level signal input part of described drive circuit is connected with protocol converter by TTL RS 232 interface conversion device, drive circuit is for the work of driving LED array, LED array is for sending light signal to the second receiving terminal, power supply is for powering to drive circuit and LED array
The Transistor-Transistor Logic level signal input part of the drive circuit of the second transmitting terminal be connected with the USB interface of smart machine by FT232RL interface conversion device, drive circuit is for the work of driving LED array, LED array is for sending light signal to the first receiving terminal, power supply is for powering to drive circuit and LED array
The first receiving terminal comprises photodiode, amplifying circuit, filter circuit and waveform changing circuit, described photodiode is converted to the signal of telecommunication for the light signal that the second transmitting terminal is sent, the electrical signal of photodiode is connected with the amplifying signal input of amplifying circuit, the amplifying signal output of amplifying circuit is connected with the filtering signal input of filter circuit, the filtering signal output of filter circuit is connected with the waveform transformation signal input part of waveform changing circuit, described waveform changing circuit is for being converted to square wave by sine wave and this square wave being reversed, the waveform transformation signal output part of waveform changing circuit is connected with protocol converter by TTL RS 232 interface conversion device,
The photodiode of the second receiving terminal is converted to the signal of telecommunication for the light signal that the first transmitting terminal is sent, the electrical signal of photodiode is connected with the amplifying signal input of amplifying circuit, the amplifying signal output of amplifying circuit is connected with the filtering signal input of filter circuit, the filtering signal output of filter circuit is connected with the waveform transformation signal input part of waveform changing circuit, described waveform changing circuit is for being converted to square wave by sine wave, the waveform transformation signal output part of waveform changing circuit is connected with the USB interface of smart machine by FT232RL interface conversion device.
Described drive circuit comprises potentiometer R1, resistance R 2, resistance R 3 and field effect transistor, the slide plate while of potentiometer R1 and the anodic bonding of power supply and LED array, the negative electrode of LED array is connected with a pin of field effect transistor, the binding post of potentiometer R1 is connected with one end, one end of resistance R 3 and No. two pins of field effect transistor of resistance R 2 simultaneously, the other end of resistance R 3 is connected with protocol converter or smart machine, No. three pins of MOSFET and the other end of resistance R 2 ground connection simultaneously.
Beneficial effect: the visible ray duplex communication system for carrying out information transmission between the Internet and smart machine the utility model proposes passes through the work of drive circuit driving LED array, and realize communicating by letter between the Internet and smart machine by the conversion of photosignal and host-host protocol, can change at any time as required the different LED array of power, system configuration is simple, communication distance is long, the communication system the utility model proposes is connected with existing internet, can makes the application of this system more extensive.
Simultaneously, disturb in order to make in the utility model the first sending and receiving end and the second sending and receiving end eliminate as much as possible signal each other in information exchanging process, the signal transmission circuit of the signal transmission circuit of the first transmitting terminal and the second receiving terminal and the second transmitting terminal and the first receiving terminal is misplaced and places or utilize light tight object to intercept, improved communication quality.
Brief description of the drawings
Fig. 1 be described in embodiment one for carrying out the structural representation of visible ray duplex communication system of information transmission between the Internet and smart machine;
Fig. 2 is the structural representation of the first transmitting terminal;
Fig. 3 is the circuit connection diagram of the first transmitting terminal;
Fig. 4 is the structural representation of the first receiving terminal;
Fig. 5 is the dislocation putting position schematic diagram of the first transmitting terminal, the first receiving terminal, the second transmitting terminal and the second receiving terminal;
Fig. 6 is the first transmitting terminal sends channel schematic diagram from light signal to the second receiving terminal;
Fig. 7 is that LED array power is while being respectively 7W and 5W, baud rate is 230kbps, when the direct current biasing by LED array is 310mA and gets rid of in ambient light interference situation, for carrying out the reliable communication distance Curve figure of visible ray duplex communication system one-way communication of information transmission between the Internet and smart machine.
Embodiment
Embodiment one, in conjunction with Fig. 1, this embodiment is described, the visible ray duplex communication system for carrying out information transmission between the Internet and smart machine described in this embodiment comprises protocol converter 1, TTL RS 232 interface conversion device, the first sending and receiving end 2, the second sending and receiving end 3 and FT232RL interface conversion device, described protocol converter 1 accessing Internet, for realizing the conversion of ICP/IP protocol to UART agreement, data interaction is carried out with protocol converter 1 in the first sending and receiving end 2, radio communication is realized by light/electric conversion regime in the first sending and receiving end 2 and the second sending and receiving end 3, data interaction is carried out with smart machine in the second sending and receiving end 3.
The difference for the visible ray duplex communication system that carries out information transmission between the Internet and smart machine described in embodiment two, this embodiment and embodiment one is, described protocol converter 1 is to adopt serial ports that model is TCP232-24 to turn network devices to realize.
It is that the serial ports of TCP232-24 turns mixed-media network modules mixed-media as protocol converter 1 that the present invention adopts current version, and this technology is prior art, and the present invention does not make any change to the agreement of its inside.
In present embodiment, for the system that makes the utility model proposes can be linked in existing network, adopt the mode of an access point of a user, realize the transparent transmission of ICP/IP protocol to UART agreement by protocol converter 1, in system real work, protocol converter 1 is switched under the mode of operation of TCP server, the intelligent establishing that is operated in like this TCP clinet mode can connect with visible light communication system, and by the Internet transmission of information.。
Embodiment three, in conjunction with Fig. 2 and Fig. 4, this embodiment is described, the difference for the visible ray duplex communication system that carries out information transmission between the Internet and smart machine described in this embodiment and embodiment one is, described the first sending and receiving end 2 comprises the first receiving terminal 12 and the first transmitting terminal 11, the second sending and receiving end 3 comprises the second receiving terminal 13 and the second transmitting terminal 14, and the circuit structure of the first receiving terminal 12 is identical with the circuit structure of the second receiving terminal 13, the circuit structure of the first transmitting terminal 11 is identical with the circuit structure of the second transmitting terminal 14
The first transmitting terminal 11 comprises drive circuit 4, LED array 5 and power supply 6, the Transistor-Transistor Logic level signal input part of described drive circuit 4 is connected with protocol converter 1 by TTL RS 232 interface conversion device, drive circuit 4 is worked for driving LED array 5, LED array 5 is for sending light signal to the second receiving terminal 13, power supply 6 is for powering to drive circuit 4 and LED array 5
The Transistor-Transistor Logic level signal input part of the drive circuit of the second transmitting terminal 14 be connected with the USB interface of smart machine by FT232RL interface conversion device, drive circuit is for the work of driving LED array, LED array is for sending light signal to the first receiving terminal 12, power supply is for powering to drive circuit and LED array
The first receiving terminal 12 comprises photodiode 7, amplifying circuit 8, filter circuit 9 and waveform changing circuit 10, described photodiode 7 is converted to the signal of telecommunication for the light signal that the second transmitting terminal 14 is sent, the electrical signal of photodiode 7 is connected with the amplifying signal input of amplifying circuit 8, the amplifying signal output of amplifying circuit 8 is connected with the filtering signal input of filter circuit 9, the filtering signal output of filter circuit 9 is connected with the waveform transformation signal input part of waveform changing circuit 10, described waveform changing circuit 10 is for being converted to sine wave square wave and this square wave being reversed, the waveform transformation signal output part of waveform changing circuit 10 is connected with protocol converter 1 by TTL RS 232 interface conversion device,
The photodiode of the second receiving terminal 13 is converted to the signal of telecommunication for the light signal that the first transmitting terminal 11 is sent, the electrical signal of photodiode is connected with the amplifying signal input of amplifying circuit, the amplifying signal output of amplifying circuit is connected with the filtering signal input of filter circuit, the filtering signal output of filter circuit is connected with the waveform transformation signal input part of waveform changing circuit, described waveform changing circuit is for being converted to square wave by sine wave, the waveform transformation signal output part of waveform changing circuit is connected with the USB interface of smart machine by FT232RL interface conversion device.
Power supply 6 described in present embodiment adopts existing LED DC driven power supply, and 220V line voltage is converted to the 300mA electric current that 1WLED works required.
In present embodiment, can adopt MC34063 is that electric power source pair of module first receiving terminal of core and each device of the second receiving terminal are powered, the processing that the 5V voltage of computer or adapter output can be reduced to ripple, increases operating frequency, and the voltage of can export-5V, use for subsequent conditioning circuit.
Embodiment four, in conjunction with Fig. 3, this embodiment is described, the difference for the visible ray duplex communication system that carries out information transmission between the Internet and smart machine described in this embodiment and embodiment three is, described drive circuit 4 comprises potentiometer R1, resistance R 2, resistance R 3 and field effect transistor, the slide plate while of potentiometer R1 and the anodic bonding of power supply 6 and LED array 5, the negative electrode of LED array 5 is connected with a pin of field effect transistor, the binding post while of potentiometer R1 and one end of resistance R 2, No. two pins of one end of resistance R 3 and field effect transistor are connected, the other end of resistance R 3 is connected with protocol converter 1 or smart machine, No. three pins of MOSFET and the other end of resistance R 2 ground connection simultaneously.
In present embodiment, drive circuit, taking field effect transistor as core, is equipped with resistance and potentiometer and realizes the driving to LED array.Field effect transistor has good temperature stability, and capability of resistance to radiation is strong, makes whole Circuits System more stable.For the LED array of different wattages, can make it be operated in linear zone by regulator potentiometer.
The difference for the visible ray duplex communication system that carries out information transmission between the Internet and smart machine described in embodiment five, this embodiment and embodiment four is, described field effect transistor is IRF530N field effect transistor.
Disturb in order to make in the utility model the first sending and receiving end and the second sending and receiving end eliminate as much as possible signal each other in information exchanging process, the signal transmission circuit of the signal transmission circuit of the first transmitting terminal and the second receiving terminal and the second transmitting terminal and the first receiving terminal is misplaced and places or utilize lighttight dividing plate to intercept, and the dislocation putting position schematic diagram of the first transmitting terminal, the first receiving terminal, the second transmitting terminal and the second receiving terminal as shown in Figure 5.
Fig. 7 is that LED array power is while being respectively 7W and 5W, baud rate is 230kbps, when the direct current biasing by LED array is 310mA and gets rid of in ambient light interference situation, for carrying out the reliable communication distance Curve figure of the visible ray duplex communication system one-way communication of information transmission between the Internet and smart machine, as we know from the figure, LED array power is larger, and the reliable communication distance of system described in the utility model is far away.
The signal of the first sending and receiving end described in the utility model and the second sending and receiving end all adopts UART agreement, because UART agreement can be widely used, can turn serial ports by bluetooth, WIFI turns serial ports and the infrared modes such as serial ports that turn realize up link, foundation is connected with other radio communications, and the utility model can be more widely used.
Claims (5)
1. for carrying out the visible ray duplex communication system of information transmission between the Internet and smart machine, it is characterized in that, it comprises protocol converter (1), TTL RS 232 interface conversion device, the first sending and receiving end (2), the second sending and receiving end (3) and FT232RL interface conversion device, described protocol converter (1) accessing Internet, for realizing the conversion of ICP/IP protocol to UART agreement, data interaction is carried out with protocol converter (1) in the first sending and receiving end (2), the first sending and receiving end (2) is realized radio communication with the second sending and receiving end (3) by light/electric conversion regime, data interaction is carried out with smart machine in the second sending and receiving end (3).
2. according to claim 1 for carrying out the visible ray duplex communication system of information transmission between the Internet and smart machine, it is characterized in that, described protocol converter (1) is to adopt the serial ports that model is TCP232-24 to turn network chip realization.
3. according to claim 1 for carrying out the visible ray duplex communication system of information transmission between the Internet and smart machine, it is characterized in that, described the first sending and receiving end (2) comprises the first receiving terminal (12) and the first transmitting terminal (11), the second sending and receiving end (3) comprises the second receiving terminal (13) and the second transmitting terminal (14), and the circuit structure of the first receiving terminal (12) is identical with the circuit structure of the second receiving terminal (13), the circuit structure of the first transmitting terminal (11) is identical with the circuit structure of the second transmitting terminal (14)
The first transmitting terminal (11) comprises drive circuit (4), LED array (5) and power supply (6), the Transistor-Transistor Logic level signal input part of described drive circuit (4) is connected with protocol converter (1) by TTL RS 232 interface conversion device, drive circuit (4) is worked for driving LED array (5), LED array (5) is for sending light signal to the second receiving terminal (13), power supply (6) is for powering to drive circuit (4) and LED array (5)
The Transistor-Transistor Logic level signal input part of the drive circuit of the second transmitting terminal (14) be connected with the USB interface of smart machine by FT232RL interface conversion device, drive circuit is for the work of driving LED array, LED array is for sending light signal to the first receiving terminal (12), power supply is for powering to drive circuit and LED array
The first receiving terminal (12) comprises photodiode (7), amplifying circuit (8), filter circuit (9) and waveform changing circuit (10), described photodiode (7) is converted to the signal of telecommunication for the light signal that the second transmitting terminal (14) is sent, the electrical signal of photodiode (7) is connected with the amplifying signal input of amplifying circuit (8), the amplifying signal output of amplifying circuit (8) is connected with the filtering signal input of filter circuit (9), the filtering signal output of filter circuit (9) is connected with the waveform transformation signal input part of waveform changing circuit (10), described waveform changing circuit (10) is for being converted to sine wave square wave and this square wave being reversed, the waveform transformation signal output part of waveform changing circuit (10) is connected with protocol converter (1) by TTL RS 232 interface conversion device,
The photodiode of the second receiving terminal (13) is converted to the signal of telecommunication for the light signal that the first transmitting terminal (11) is sent, the electrical signal of photodiode is connected with the amplifying signal input of amplifying circuit, the amplifying signal output of amplifying circuit is connected with the filtering signal input of filter circuit, the filtering signal output of filter circuit is connected with the waveform transformation signal input part of waveform changing circuit, described waveform changing circuit is for being converted to square wave by sine wave, the waveform transformation signal output part of waveform changing circuit is connected with the USB interface of smart machine by FT232RL interface conversion device.
4. according to claim 3 for carrying out the visible ray duplex communication system of information transmission between the Internet and smart machine, it is characterized in that, described drive circuit (4) comprises potentiometer (R1), resistance (R2), resistance (R3) and field effect transistor, the slide plate while of potentiometer (R1) and the anodic bonding of power supply (6) and LED array (5), the negative electrode of LED array (5) is connected with a pin of field effect transistor, the binding post while of potentiometer (R1) and one end of resistance (R2), No. two pins of one end of resistance (R3) and field effect transistor are connected, the other end of resistance (R3) is connected with protocol converter (1) or smart machine, No. three pins of MOSFET and the other end of resistance (R2) ground connection simultaneously.
5. according to claim 4ly it is characterized in that for carrying out the visible ray duplex communication system of information transmission between the Internet and smart machine, described field effect transistor is IRF530N field effect transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420263684.XU CN203827352U (en) | 2014-05-22 | 2014-05-22 | Visible light duplex communication system used for carrying out information transmission between Internet and intelligent equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420263684.XU CN203827352U (en) | 2014-05-22 | 2014-05-22 | Visible light duplex communication system used for carrying out information transmission between Internet and intelligent equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105245273A (en) * | 2015-08-27 | 2016-01-13 | 桂林理工大学 | RS232 and VLC protocol conversion method capable of illumination equalization |
| CN105515748A (en) * | 2015-11-26 | 2016-04-20 | 国网黑龙江省电力有限公司信息通信公司 | Duplex communication system between Internet and smart equipment |
| CN109756265A (en) * | 2017-11-03 | 2019-05-14 | 天津职业技术师范大学 | Real-time full-duplex Internet access system based on LED visible light communication |
-
2014
- 2014-05-22 CN CN201420263684.XU patent/CN203827352U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105245273A (en) * | 2015-08-27 | 2016-01-13 | 桂林理工大学 | RS232 and VLC protocol conversion method capable of illumination equalization |
| CN105245273B (en) * | 2015-08-27 | 2017-12-12 | 桂林理工大学 | A kind of balanced RS232 of illumination and VLC communication protocol conversion methods |
| CN105515748A (en) * | 2015-11-26 | 2016-04-20 | 国网黑龙江省电力有限公司信息通信公司 | Duplex communication system between Internet and smart equipment |
| CN109756265A (en) * | 2017-11-03 | 2019-05-14 | 天津职业技术师范大学 | Real-time full-duplex Internet access system based on LED visible light communication |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140910 Termination date: 20160522 |
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| CF01 | Termination of patent right due to non-payment of annual fee |