CN219577070U - Visible light and infrared communication system - Google Patents
Visible light and infrared communication system Download PDFInfo
- Publication number
- CN219577070U CN219577070U CN202320311559.0U CN202320311559U CN219577070U CN 219577070 U CN219577070 U CN 219577070U CN 202320311559 U CN202320311559 U CN 202320311559U CN 219577070 U CN219577070 U CN 219577070U
- Authority
- CN
- China
- Prior art keywords
- module
- signal
- infrared
- circuit
- power switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Landscapes
- Optical Communication System (AREA)
Abstract
The utility model discloses a visible light and infrared communication system, which comprises a signal coding module, a signal modulation module, a signal gating switch module, a visible light transmitting module, an infrared light transmitting module and a receiving module, wherein the signal coding module is electrically connected with the signal modulation module, the signal modulation module is electrically connected with the signal gating switch module, and the signal gating switch module is respectively electrically connected with the visible light transmitting module and the infrared light transmitting module; the visible light emitting module comprises a constant current circuit, a Bias Tee circuit and an LED lamp bead, one end of the constant current circuit is connected with one end of the Bias Tee circuit, and the visible light emitting module, the infrared light emitting module and the receiving module are matched through the signal coding module, the signal modulation module, the signal gating switch module, the visible light emitting module, the infrared light emitting module and the receiving module, so that the visible light emitting module is based on the visible light communication of the LED lamp.
Description
Technical Field
The utility model relates to the technical field of visible light communication, in particular to a visible light and infrared communication system.
Background
Visible light communication is a technique in which information is transmitted by using a high-speed bright-dark blinking signal that is invisible to the naked eye and is emitted by a light emitting diode, and one of the ideas of the visible light communication technology is to use light emitted by an illumination LED to both illuminate and communicate.
The application number of the Chinese patent document is: 201920308871.8, a visible light communication device and system comprising: a signal input device, a signal modulation device, an LED device, a signal receiving device and a signal demodulation device; one end of the signal modulation device is connected with the signal input device, and the other end of the signal modulation device is connected with the LED equipment; one end of the LED equipment is connected with the signal modulation device, and the other end of the LED equipment is connected with the signal receiving device; the signal receiving device is also connected with the signal demodulation device; the signal input device inputs a first digital signal to the signal modulation device; the signal modulation device modulates the first digital signal to obtain a modulated signal, and converts the modulated signal into a first electric signal; the LED equipment performs frequency change under the control of a first electric signal; the signal receiving device collects the change information of the frequency of the LED equipment and converts the change information into a second electric signal; the signal demodulation device demodulates the second electric signal to obtain a second digital signal, and the mode improves the stability of communication transmission.
The visible light communication system still has the following drawbacks,
the system's lighting LED device is not always on and communication will be interrupted when it is off. The requirement of uninterrupted communication cannot be met, so that we need to propose a visible light and infrared communication system that can adopt another communication mode to meet the requirement of uninterrupted communication when the LED device is turned off.
Disclosure of Invention
The utility model aims to provide a visible light and infrared communication system, which is based on the visible light communication of an LED lamp, when the LED lamp is closed, the visible light communication is interrupted, the infrared communication can be adopted as a substitute, and the uninterrupted communication requirement is met, so that the problems in the background technology are solved.
In order to achieve the above purpose, the present utility model provides the following technical solutions: a visible and infrared communication system comprising: the device comprises a signal coding module, a signal modulation module, a signal gating switch module, a visible light transmitting module, an infrared light transmitting module and a receiving module; the signal coding module is electrically connected with the signal modulation module, the signal modulation module is electrically connected with the signal gating switch module, and the signal gating switch module is respectively electrically connected with the visible light emission module and the infrared light emission module;
the visible light emission module comprises a constant current circuit, a Bias Tee circuit and an LED lamp bead, one end of the constant current circuit is connected with one end of the Bias Tee circuit, and the other end of the Bias Tee circuit is connected with one end of the LED lamp bead;
the infrared light emitting module comprises an infrared driving circuit and an infrared emitting diode, and one end of the infrared driving circuit is connected with one end of the infrared emitting diode.
Preferably, the signal gating switch module comprises a U1, a capacitor C3 is connected between three pins and four pins of the U1, eleven pins of the U1 are connected with a capacitor C1 and a capacitor C2 which are arranged in parallel, one ends of the capacitors C1 and C2 are grounded, the other ends of the capacitors C1 and C2 are connected with a resistor R1, one end of the resistor R2 is grounded, and the other end of the resistor R2 is connected with the resistor R1 at the twelve pins of the U1.
Preferably, the infrared light emitting device further comprises a microcontroller, wherein one end of the microcontroller is connected with a first power switch and a second power switch respectively, the first power switch is connected with the visible light emitting module, the second power switch is connected with the infrared light emitting module, the first power switch and the second power switch are turned on when receiving high-level control signals, and the first power switch and the second power switch are turned off when receiving low-level signals.
Preferably, the first power switch and the second power switch are both set as a chip U2, a capacitor C4 is connected in parallel between one pin and four pins of the chip U2, the four pins of the chip U2 are also connected with a resistor R5, one end of the resistor R4 is connected with a resistor R5, the other end of the resistor R4 is connected with one pin of the chip U2, the connecting ends of the resistor R4 and the resistor R5 are connected with a triode V1, the base electrode of the triode V1 is connected with a resistor R6, and one end of the resistor R6 is connected with a control signal of the first power switch.
Preferably, one end of the first power switch outputs the first power to the constant current circuit to supply power to the constant current circuit, and the LED lamp beads emit visible light.
Preferably, one end of the second power switch outputs the second power to the infrared driving circuit to supply power to the infrared driving circuit, and the infrared emitting diode emits infrared light.
Preferably, the receiving module comprises a silicon PIN photodiode, a transimpedance amplifying circuit, a voltage amplifying circuit, a signal demodulating circuit and a signal decoding circuit, wherein the silicon PIN photodiode is connected with the transimpedance amplifying circuit, the transimpedance amplifying circuit is connected with the voltage amplifying circuit, the voltage amplifying circuit is connected with the signal demodulating circuit, and the signal demodulating circuit is connected with the signal decoding circuit.
Compared with the prior art, the utility model has the beneficial effects that: according to the LED lamp, the signal coding module, the signal modulation module, the signal gating switch module, the visible light emitting module, the infrared light emitting module and the receiving module are matched, so that the LED lamp is based on visible light communication, when the LED lamp is turned off, the visible light communication is interrupted, infrared communication can be adopted as a substitute, and the uninterrupted communication requirement is met.
Drawings
FIG. 1 is a system block diagram of the present utility model;
FIG. 2 is a schematic diagram of the connection of the microcontroller to the first and second power switches of the present utility model;
FIG. 3 is a circuit diagram of U1 of the present utility model;
FIG. 4 is a circuit diagram of a first power switch of the present utility model;
fig. 5 is a system block diagram of a receiving module of the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-5, the present utility model provides a technical solution: the visible light and infrared communication system comprises a signal coding module, a signal modulation module, a signal gating switch module, a visible light transmitting module, an infrared light transmitting module and a receiving module, wherein the signal coding module is electrically connected with the signal modulation module, the signal modulation module is electrically connected with the signal gating switch module, and the signal gating switch module is respectively electrically connected with the visible light transmitting module and the infrared light transmitting module; the visible light emission module comprises a constant current circuit, a Bias Tee circuit and an LED lamp bead, one end of the constant current circuit is connected with one end of the Bias Tee circuit, and the other end of the Bias Tee circuit is connected with one end of the LED lamp bead; the infrared light emitting module comprises an infrared driving circuit and an infrared emitting diode, and one end of the infrared driving circuit is connected with one end of the infrared emitting diode;
as shown in fig. 1, after signal encoding and signal modulation, the signal to be transmitted is turned on by the Bias Tee circuit or the infrared driving circuit under the action of the control signal 3 sent by the microcontroller at the signal gating switch, and at the same time, only one of the Bias Tee circuit and the infrared driving circuit is turned on. When the LED lamp is turned on, the power supply supplies power to the constant current circuit, the constant current circuit supplies direct current of hundreds of milliamperes, the signal gating switch is connected with the modulated signal to the Bias Tee circuit, the Bias Tee circuit mixes the direct current with the modulated signal and then drives the LED lamp beads to emit visible light, on one hand, the LED lamp is illuminated, and on the other hand, the visible light carries information. When the LED lamp is turned off, the first power supply, the constant current circuit and the Bias Tee circuit do not work, the second power supply and the infrared driving circuit work, the signal gating switch is connected with the modulated signal into the infrared driving circuit, so that the infrared diode emits infrared light, and the infrared light carries information.
The signal gating switch module comprises U1, a capacitor C3 is connected between three pins and four pins of the U1, eleven pins of the U1 are connected with a capacitor C1 and a capacitor C2 which are arranged in parallel, one ends of the capacitors C1 and C2 are grounded, the other ends of the capacitors C1 and C2 are connected with a resistor R1, one ends of the resistors R2 are grounded, and the other ends of the resistors R2 are connected with the resistor R1 on twelve pins of the U1.
As shown in fig. 3, VDD is a power supply pin, and the capacitor C1 and the capacitor C2 are power supply filter capacitors. VSS is a negative power supply input pin when positive and negative power supplies are used, and the circuit does not use positive and negative power supplies and is connected with a filter capacitor C3. The EN pin is a main switch of a signal path, is connected by VDD through R1 and R2 voltage division, and is in an open state. The modulated signal is input from the D1 pin, and when the SEL1 pin is in a high level, TMUX6236 is used for switching on the Bias Tee circuit and sending the modulated signal to the Bias Tee circuit; when the SEL1 pin is low, TMUX6236 will turn on the infrared drive circuitry and send the modulated signal to the infrared drive circuitry. The SEL1 pin is high or low as determined by the control signal 3 from the microcontroller.
The infrared light emitting device comprises a visible light emitting module, a first power switch, a second power switch, a first microcontroller, a second microcontroller and a first switch, wherein the first power switch and the second power switch are respectively connected with one end of the microcontroller, the first power switch is connected with the visible light emitting module, the second power switch is connected with the infrared light emitting module, the first power switch and the second power switch are conducted when receiving a high-level control signal, and the first power switch and the second power switch are disconnected when receiving a low-level signal.
The power switch I and the power switch II are both set to be a chip U2 with the model of 9435A, a capacitor C4 is connected in parallel between one pin and four pins of the chip U2, the four pins of the chip U2 are also connected with a resistor R5, one end of the resistor R4 is connected with a resistor R5, the other end of the resistor R4 is connected with one pin of the chip U2, the connecting ends of the resistor R4 and the resistor R5 are connected with a triode V1, the base electrode of the triode V1 is connected with a resistor R6, and one end of the resistor R6 is connected with a control signal of the power switch I.
As shown in fig. 4, the chip U2 corresponds to a power switch, and when the control signal 1 is at a high level, the U2 is turned on, and VCC supplies power; when the control signal 1 is low, the chip U2 is turned off and VCC is unpowered. When the LED lamp is turned on, the U1 gives out a high level of a control signal 1, a low level of a control signal 2 and a high level of a control signal 3, so that the constant current circuit works, the infrared driving circuit does not work, the modulated signal is sent to the Bias Tee circuit, and the LED lamp emits light and carries information. When the LED lamp is turned off, the U1 gives out a low level of the control signal 1, a high level of the control signal 2 and a low level of the control signal 3, so that the infrared driving circuit works, the constant current circuit does not work, the modulated signal is sent to the infrared driving circuit, the infrared diode emits light and carries information, and the uninterrupted communication requirement is met.
One end of the first power switch outputs a first power supply to the constant current circuit to supply power to the constant current circuit, the LED lamp beads emit visible light, one end of the second power switch outputs a second power supply to the infrared driving circuit to supply power to the infrared driving circuit, and the infrared emitting diode emits infrared light. Infrared communication is a technology for transmitting data using infrared rays. The remote controller of common household appliances can realize remote control of household appliances by widely adopting an infrared communication mode. The infrared has the greatest advantage of not being interfered by radio, and the use of the infrared is not limited by the national wireless management committee. Visible light communication and infrared communication share many similarities in system composition, so that the use of infrared communication as a complement to visible light communication can simplify the overall implementation of the system.
As shown in fig. 5, the receiving module further comprises a silicon PIN photodiode, a transimpedance amplifying circuit, a voltage amplifying circuit, a signal demodulating circuit and a signal decoding circuit, wherein the silicon PIN photodiode is connected with the transimpedance amplifying circuit, the transimpedance amplifying circuit is connected with the voltage amplifying circuit, the voltage amplifying circuit is connected with the signal demodulating circuit, the signal demodulating circuit is connected with the signal decoding circuit, and the receiving module can receive white light or infrared light. The silicon PIN photodiode needs to be selected with a model with high photosensitivity in the visible light and infrared bands, such as S6036 of the bingo photon.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A visible and infrared communication system, comprising: the device comprises a signal coding module, a signal modulation module, a signal gating switch module, a visible light transmitting module, an infrared light transmitting module and a receiving module; the signal coding module is electrically connected with the signal modulation module, the signal modulation module is electrically connected with the signal gating switch module, and the signal gating switch module is respectively electrically connected with the visible light emission module and the infrared light emission module;
the visible light emission module comprises a constant current circuit, a Bias Tee circuit and an LED lamp bead, one end of the constant current circuit is connected with one end of the Bias Tee circuit, and the other end of the Bias Tee circuit is connected with one end of the LED lamp bead;
the infrared light emitting module comprises an infrared driving circuit and an infrared emitting diode, and one end of the infrared driving circuit is connected with one end of the infrared emitting diode.
2. A visible and infrared communication system according to claim 1, wherein: the signal gating switch module comprises U1, a capacitor C3 is connected between three pins and four pins of the U1, eleven pins of the U1 are connected with a capacitor C1 and a capacitor C2 which are arranged in parallel, one ends of the capacitors C1 and C2 are grounded, the other ends of the capacitors C1 and C2 are connected with a resistor R1, one ends of the resistors R2 are grounded, and the other ends of the resistors R2 are connected with the resistor R1 on twelve pins of the U1.
3. A visible and infrared communication system according to claim 2, wherein: the infrared light emitting device comprises a visible light emitting module, a first power switch, a second power switch, a first microcontroller, a second microcontroller and a first switch, wherein the first power switch and the second power switch are respectively connected with one end of the microcontroller, the first power switch is connected with the visible light emitting module, the second power switch is connected with the infrared light emitting module, the first power switch and the second power switch are conducted when receiving a high-level control signal, and the first power switch and the second power switch are disconnected when receiving a low-level signal.
4. A visible and infrared communication system according to claim 3, wherein: the power switch I and the power switch II are both arranged as a chip U2, a capacitor C4 is connected in parallel between one pin and four pins of the chip U2, a resistor R5 is further connected to the four pins of the chip U2, one end of the resistor R4 is connected with a resistor R5, the other end of the resistor R4 is connected with one pin of the U2, the connecting ends of the resistor R4 and the resistor R5 are connected with a triode V1, the base electrode of the triode V1 is connected with a resistor R6, and one end of the resistor R6 is connected with a control signal of the power switch I.
5. A visible and infrared communication system according to claim 4, wherein: one end of the first power switch outputs the first power supply to the constant current circuit to supply power for the constant current circuit, and the LED lamp beads emit visible light.
6. A visible and infrared communication system according to claim 5, wherein: and one end of the second power switch outputs the second power supply to the infrared driving circuit to supply power for the infrared driving circuit, and the infrared emitting diode emits infrared light.
7. A visible and infrared communication system according to claim 1, wherein: the receiving module comprises a silicon PIN photodiode, a transimpedance amplifying circuit, a voltage amplifying circuit, a signal demodulating circuit and a signal decoding circuit, wherein the silicon PIN photodiode is connected with the transimpedance amplifying circuit, the transimpedance amplifying circuit is connected with the voltage amplifying circuit, the voltage amplifying circuit is connected with the signal demodulating circuit, and the signal demodulating circuit is connected with the signal decoding circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320311559.0U CN219577070U (en) | 2023-02-15 | 2023-02-15 | Visible light and infrared communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320311559.0U CN219577070U (en) | 2023-02-15 | 2023-02-15 | Visible light and infrared communication system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219577070U true CN219577070U (en) | 2023-08-22 |
Family
ID=87653140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320311559.0U Active CN219577070U (en) | 2023-02-15 | 2023-02-15 | Visible light and infrared communication system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219577070U (en) |
-
2023
- 2023-02-15 CN CN202320311559.0U patent/CN219577070U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Pang et al. | LED traffic light as a communications device | |
| CN103841732A (en) | Indoor visible light communication method simultaneously achieving brightness control and data transmission | |
| CN104022824A (en) | LED street lamp system with communication function | |
| CN102882600A (en) | Universal serial bus (USB)-interface-based pluggable visible like wireless access system | |
| CN106452602B (en) | A kind of modulator approach of visible light communication | |
| CN103490814A (en) | Serial communication device of USB interface LED visible light and system thereof | |
| CN1312862C (en) | Optical transmitter apparatus | |
| CN219577070U (en) | Visible light and infrared communication system | |
| CN108199771A (en) | A kind of visible light communication device | |
| CN106130637B (en) | A kind of LED based visible light communication system and method | |
| CN201752055U (en) | Remote power socket | |
| CN103369772A (en) | Signal lamp and control circuit thereof | |
| CN102970263B (en) | Signal modulation and demodulation method in visible light communication based on combined modified difference pulse code modulation (MDPCM)-MRZOPAM | |
| CN218886450U (en) | Instrument data collector | |
| CN214704618U (en) | Serial port communication multiplexing circuit | |
| CN208158589U (en) | A kind of visible light communication device | |
| Pang | Information technology based on visible LEDs for optical wireless communications | |
| CN205883245U (en) | Visible light communication system based on LED | |
| CN103561525B (en) | Optical communication device based on white light LED illumination | |
| CN109615839B (en) | Coding chip and remote control device integrated with key power supply | |
| JP2000332688A (en) | Optical space transmitting device | |
| KR101379968B1 (en) | Apparatus, system and method for communicating data using light | |
| CN103297144A (en) | Optical communication method based on USB and launching device | |
| CN203104454U (en) | Optical network unit | |
| CN207835860U (en) | Light emitting diode tune stream driving circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |