CN112019269A - Data transmission and control method based on visible light communication - Google Patents
Data transmission and control method based on visible light communication Download PDFInfo
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- CN112019269A CN112019269A CN202010939092.5A CN202010939092A CN112019269A CN 112019269 A CN112019269 A CN 112019269A CN 202010939092 A CN202010939092 A CN 202010939092A CN 112019269 A CN112019269 A CN 112019269A
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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
- H04B10/112—Line-of-sight transmission over an extended range
- H04B10/1123—Bidirectional transmission
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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
- H04B10/1143—Bidirectional transmission
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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
- H04B10/29—Repeaters
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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
Abstract
The invention discloses a data transmission and control method based on visible light communication, which comprises the following steps: a plurality of acquisition nodes are arranged indoors and connected with indoor communication equipment; an indoor acquisition base station is arranged to serve as a data transmission center of a plurality of acquisition nodes, and the indoor acquisition base station is connected with each acquisition node through a visible light link and an infrared link; an indoor relay module is arranged to serve as a relay station for an indoor acquisition base station and an outdoor all-optical communication local area network, and the indoor relay module is connected with the indoor acquisition base station through a visible light link and an infrared link; an outdoor acquisition end is arranged to communicate with the outside, an all-optical communication local area network is formed by the indoor relay module, the indoor acquisition base station, the acquisition nodes and the indoor communication equipment based on visible light, and the outdoor acquisition end is connected with the indoor relay module through a visible light link and an infrared link. The invention utilizes the optical communication technology to build an all-optical network indoors and outdoors, and realizes the wireless two-way communication of data indoors and outdoors.
Description
Technical Field
The invention relates to a data control method, in particular to a data transmission control method based on visible light communication.
Background
Under the push of the wave of high-tech revolution taking information technology as the core, the construction of safe information networks is rapidly developing globally. Communication and networking means for ensuring interconnection and intercommunication of information systems are also key to network construction, and the capacity of the whole information network is restricted. With the rapid development of network information technology, in the civil field, novel communication and interconnection technologies such as intelligent networking and internet of things are in the endlessly. The internet of things combined with the positioning technology is applied to industrial internet of things born by industrial control, and the internet of things is widely applied to the fields of industrial robot control, industrial sensor data acquisition, large-scale AGV (automatic Guided Vehicle) control and the like, becomes an industrial 4.0 informatization basis, plays an important role in production force development, and embodies the huge role of an information technology multiplier. If the novel network technologies can be applied to a special field on a large scale, the novel network technologies play an important role in improving the working benefits of the field. However, since the information network in the special field has higher requirements for high speed, high density and high real-time interconnection means, and meanwhile, the network has more strict security requirements and has a corresponding requirement for accurate positioning, there is a need for an integrated system for network interconnection communication and positioning suitable for special scenarios in the related field.
Based on the background, the invention discloses a data transmission and control method based on visible light communication, which realizes communication by using ubiquitous visible light, has the advantages of low equipment energy consumption, high communication speed, no harm to human bodies, no radiation, no electromagnetic compatibility problem with the existing equipment, safety and confidentiality, and can realize safe wireless mobile communication. Meanwhile, visible light communication has the characteristic of natural strong regionality, and an integrated system combining communication and positioning can be directly realized. Therefore, the integration of functions such as illumination, communication, positioning and the like is realized by fully depending on the existing illumination equipment, and the method has strong application advantages in special fields. The urgent needs of special indoor scene communication, location can be solved, the civil field also can be promoted, the ubiquitous industry thing networking communication and location problem among the industrial control are solved.
Disclosure of Invention
The invention aims to provide a data transmission and control method based on visible light communication, which utilizes the optical communication technology to build an all-optical network indoors and outdoors and realizes the wireless two-way communication of data indoors and outdoors under the condition of no electromagnetic interference.
The technical scheme of the invention is as follows:
a data transmission and control method based on visible light communication comprises the following steps:
a plurality of acquisition nodes are arranged indoors, and each acquisition node is connected with one indoor communication device to realize bidirectional communication;
an indoor acquisition base station is arranged to serve as a data transmission center of the plurality of acquisition nodes, and the indoor acquisition base station is connected with each acquisition node through a visible light link and an infrared link to realize bidirectional communication;
an indoor relay module is arranged to serve as a relay station of the indoor acquisition base station and an outdoor all-optical communication local area network, and the indoor relay module is connected with the indoor acquisition base station through a visible light link and an infrared link to achieve bidirectional communication;
an outdoor acquisition end is arranged to communicate with the outside, an all-optical communication local area network is formed by the indoor relay module, the indoor acquisition base station, the acquisition nodes and the indoor communication equipment based on visible light, and the outdoor acquisition end is connected with the indoor relay module by adopting a visible light link and an infrared link so as to realize bidirectional communication;
the acquisition node sequentially transmits uplink data of the indoor communication equipment to the outdoor acquisition end through the indoor acquisition base station and the indoor relay module through the infrared link, the outdoor acquisition end acquires information from the outside according to the uplink data after receiving the uplink data to form downlink data, the downlink data are sequentially transmitted to the acquisition node through the indoor relay module and the indoor acquisition base station through the visible light link, and the acquisition node feeds the downlink data back to the indoor communication equipment.
Furthermore, the collection node comprises an equipment communication interface, a first data processing module and a first photoelectric front end, wherein the equipment communication interface and the first photoelectric front end are respectively connected with the first data processing module, are connected with indoor communication equipment through the equipment communication interface, and are communicated with the indoor collection base station through the first photoelectric front end.
Furthermore, adopt 100Mbps Ethernet transmission technology short distance interconnection between collection node and the indoor communication equipment, equipment communication interface is the RJ45 interface, is connected with indoor communication equipment through the net twine.
Furthermore, the collection node is powered by a first power supply circuit, the first power supply circuit comprises a first rechargeable battery, a first power supply management module and a first sleep activation detection module, the first rechargeable battery is connected to a mains supply socket for charging, the first power supply management module is electrically connected with the collection node, and the first sleep activation detection module is electrically connected with the first power supply management module so that the collection node is activated at work and is in a sleep state at ordinary times.
Furthermore, the indoor acquisition base station comprises a second photoelectric front end, a second data processing module and a third photoelectric front end, wherein the second photoelectric front end and the third photoelectric front end are respectively connected with the second data processing module, are communicated with the acquisition node through the second photoelectric front end, and are communicated with the indoor relay module through the third photoelectric front end.
Furthermore, the indoor collection base station is powered by a second power supply circuit, the second power supply circuit comprises a second rechargeable battery, a second power supply management module and a second sleep activation detection module, the second rechargeable battery is connected to the mains supply socket for charging, the second power supply management module is electrically connected with the indoor collection base station, and the second sleep activation detection module is electrically connected with the second power supply management module so that the indoor collection base station is activated during working and is in a sleep state at ordinary times.
Furthermore, the indoor relay module comprises a fourth photoelectric front end, a third data processing module, a fifth photoelectric front end and a data cache module, wherein the fourth photoelectric front end, the fifth photoelectric front end and the data cache module are respectively connected with the third data processing module, and are communicated with the indoor acquisition base station through the fourth photoelectric front end and the outdoor acquisition end through the fifth photoelectric front end.
Furthermore, the indoor relay module is powered by a third power supply circuit, the third power supply circuit comprises a third rechargeable battery, a third power supply management module and a third sleep activation detection module, the third rechargeable battery is connected to the mains supply socket for charging, the third power supply management module is electrically connected with the indoor relay module, and the third sleep activation detection module is electrically connected with the third power supply management module, so that the indoor relay module is activated only when working and is in a sleep state at ordinary times.
Furthermore, the outdoor acquisition end comprises a sixth photoelectric front end, a fourth data processing module, an external communication interface and a storage card, wherein the sixth photoelectric front end, the external communication interface and the storage card are respectively connected with the fourth data processing module, the sixth photoelectric front end is communicated with the indoor relay module, the external communication interface downloads data from the outside, and the external communication interface comprises RJ45, USB, Bluetooth and IR.
Furthermore, the outdoor collection end is supplied with power by a fourth power supply circuit, the fourth power supply circuit comprises a battery and a fourth power supply management module, and the fourth power supply management module is directly supplied with power for the outdoor collection end by a commercial power or is supplied with power for the outdoor collection end by the battery.
Compared with the prior art, the invention has the beneficial effects that:
(1) all optical network, no electromagnetic leakage, no need of wiring
Aiming at the problems of poor mobility, complex wiring, difficult line maintenance and optimization and the like of wired communication, a visible light communication-based data transmission and control method is adopted, a visible light link and an infrared link are adopted between a collection node, an indoor collection base station, an indoor relay module and an outdoor collection end, an all-optical communication local area network is built, and no electromagnetic leakage exists;
(2) encryption of transmission and prevention of information theft
An end-to-end data encryption technology is added to an optical communication link, under the condition that optical path communication is not sensed, the whole-process encryption of a national encryption algorithm of data between a network convergence end and a user terminal is supported, the data transmission safety on a wireless (optical) path is ensured, information leakage caused by illegally obtaining optical path signals is avoided, and the information transmission safety level of a wireless network is improved;
(3) full coverage of signal without alignment
The indoor acquisition base station is communicated with the acquisition nodes, the signal light source can adopt an LED with a larger radiation angle, and the signal can cover all indoor spaces, so that the acquisition nodes are controllable in carving, and the acquisition base station is not required to be accurately aligned to a signal source; secondly, signal light sources between the indoor acquisition base station and the indoor relay module and between the indoor relay module and the outdoor acquisition end are also LEDs, so that a certain radiation angle is achieved, the construction of an all-optical communication network is facilitated, the alignment is not needed, and the network construction is rapid and convenient;
(4) low power mode design
The collection node, the indoor collection base station and the indoor relay module are all designed in a low-power-consumption working mode, namely, only when the collection node works, the collection node is activated to work, and the collection node is in a sleep state at ordinary times.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic view of an all-optical communication network building of a data transmission and control method based on visible light communication according to an embodiment of the present invention;
FIG. 2 is a block diagram of a collection node according to an embodiment of the present invention;
fig. 3 is a block diagram of an indoor acquisition base station according to an embodiment of the present invention;
fig. 4 is a block diagram of an indoor relay module according to an embodiment of the present invention;
fig. 5 is a block diagram of an outdoor acquisition end according to an embodiment of the present invention;
fig. 6 is a scene building schematic diagram of a data transmission and control method based on visible light communication according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In order to explain the technical means of the present invention, the following description will be given by way of specific examples.
Examples
The embodiment of the invention provides a data transmission and control method based on visible light communication, which is characterized in that a full optical network is built indoors and outdoors by utilizing an optical communication technology, and the wireless two-way communication of data indoors and outdoors is realized under the condition that electromagnetic interference does not exist. To achieve the purpose, the implementation method comprises the following steps: referring to fig. 1, a plurality of collection nodes are arranged indoors, and each collection node is connected with an indoor communication device to realize bidirectional communication; an indoor acquisition base station is arranged as a data transmission center of the acquisition nodes, the indoor acquisition base station is connected with each acquisition node through a visible light link and an infrared link to realize two-way communication, wherein the uplink is infrared, the downlink is visible light, the communication index is 15Mbps @4m, and Pe is less than 10-6(ii) a Providing an indoor relay module asThe indoor acquisition base station and the outdoor relay station for building the all-optical communication local area network are connected through a visible light link and an infrared link between the indoor relay module and the indoor acquisition base station to realize two-way communication, wherein the uplink is infrared, the downlink is visible light, the communication index is 50Mbps @20m, and Pe is less than 10-6Point-to-point; an outdoor acquisition end is arranged to communicate with the outside, an all-optical communication local area network is formed based on visible light, an indoor relay module, an indoor acquisition base station, acquisition nodes and indoor communication equipment, the outdoor acquisition end and the indoor relay module are connected through a visible light link and an infrared link to realize two-way communication, wherein the uplink is infrared, the downlink is visible light, the communication index is 50Mbps @5m, and Pe is less than 10-6And glass is penetrated. The communication interface between the outdoor acquisition end and the outside mainly comprises RJ45, USB, Bluetooth, IR and the like.
Description of the principle: the acquisition node sequentially transmits uplink data of the indoor communication equipment to the outdoor acquisition end through the indoor acquisition base station and the indoor relay module through the infrared link, the outdoor acquisition end acquires information from the outside according to the uplink data after receiving the uplink data to form downlink data, the downlink data are sequentially transmitted to the acquisition node through the indoor relay module and the indoor acquisition base station through the visible light link, and the acquisition node feeds the downlink data back to the indoor communication equipment.
Specifically, the acquisition node, the indoor acquisition base station, the indoor relay module, and the outdoor acquisition terminal are described below one by one.
Referring to fig. 2, the collection node includes an equipment communication interface, a first data processing module, and a first photoelectric front end, where the equipment communication interface and the first photoelectric front end are respectively connected to the first data processing module, where the equipment communication interface is connected to an indoor communication device, and the collection node and the indoor communication device are interconnected in a short distance by using 100Mbps ethernet transmission technology, in this embodiment, the equipment communication interface is an RJ45 interface and is connected to the indoor communication device through a network cable; the first photoelectric front end is communicated with an indoor acquisition base station, the uplink is infrared, the downlink is visible light, the communication index is 15Mbps @4m, and Pe is less than 10-6。
Furthermore, the acquisition node is powered by a first power supply circuit, the first power supply circuit comprises a first rechargeable battery, a first power supply management module and a first sleep activation detection module, the first rechargeable battery is connected with a mains supply socket for charging and is electrically connected with the acquisition node through the first power supply management module, the acquisition node is chargeable or connected with a mains supply, the working time of the battery is not less than 40 days, the communication is carried out once every a period of time, the interval time is not more than 4 hours, and the acquisition node can be configured on line. The first sleep activation detection module is electrically connected with the first power supply management module, so that the acquisition node is activated only when in work and is in a sleep state at ordinary times, and the activation mode can be activated by the outdoor acquisition end or the first sleep activation detection module at regular time. Each of the collection nodes transmits a supporting data amount of not less than 20MB per day.
Referring to fig. 3, the indoor acquisition base station includes a second photoelectric front end, a second data processing module, and a third photoelectric front end, where the second photoelectric front end and the third photoelectric front end are respectively connected to the second data processing module, and communicate with the acquisition node through the second photoelectric front end, the uplink is infrared, the downlink is visible light, the communication index is 15Mbps @4m, and Pe < 10-6(ii) a The indoor relay module is communicated with the third photoelectric front end, the uplink is infrared, the downlink is visible light, the communication index is 50Mbps @20m, and Pe is less than 10-6Point-to-point. The indoor acquisition base station is accessed to acquisition node data through polling or competition, and the number of designed support nodes is not less than 8.
Furthermore, the indoor acquisition base station is powered by a second power supply circuit, the second power supply circuit comprises a second rechargeable battery, a second power supply management module and a second sleep activation detection module, the second rechargeable battery is connected with a mains supply socket for charging and is electrically connected with the indoor acquisition base station through the second power supply management module, the indoor acquisition base station can be charged or connected with mains supply, the working time of the battery is not less than 40 days, the communication is carried out once every a period of time, the interval time is not more than 4 hours, and the indoor acquisition base station can be configured on line. The second sleep activation detection module is electrically connected with the second power supply management module, so that the indoor acquisition base station is activated when working and is in a sleep state at ordinary times, and the activation mode can be activated by the outdoor acquisition end or the second sleep activation detection module at regular time. Each node of the indoor acquisition base station transmits the supporting data amount not less than 80MB per day.
Referring to fig. 4, the indoor relay module includes a fourth photoelectric front end, a third data processing module, a fifth photoelectric front end, and a data cache module, where the fourth photoelectric front end, the fifth photoelectric front end, and the data cache module are respectively connected to the third data processing module, and communicate with the indoor acquisition base station through the fourth photoelectric front end, where an uplink is infrared, a downlink is visible light, a communication index is 50Mbps @20m, and Pe is less than 10-6Point-to-point; the fifth photoelectric front end is communicated with the outdoor acquisition end, the uplink is infrared, the downlink is visible light, the communication index is 50Mbps @5m, and Pe is less than 10-6And glass is penetrated.
Furthermore, the indoor relay module is powered by a third power supply circuit, the third power supply circuit comprises a third rechargeable battery, a third power supply management module and a third sleep activation detection module, the third rechargeable battery is connected to a mains supply socket for charging, and is electrically connected with the indoor relay module through the third power supply management module, the indoor relay module can be charged or connected with mains supply, the working time of the battery is not less than 40 days, the communication is carried out once every a period of time, the interval time is not more than 4 hours, and the indoor relay module can be configured on line. The third sleep activation detection module is electrically connected with the third power supply management module, so that the indoor relay module is activated when in work and is in a sleep state at ordinary times, and the activation mode can be activated by the outdoor acquisition terminal or the third sleep activation detection module at regular time.
Referring to fig. 5, the outdoor acquisition end includes a sixth photoelectric front end, a fourth data processing module, an external communication interface and a memory card, the sixth photoelectric front end, the external communication interface and the memory card are respectively connected to the fourth data processing module, and communicate with the indoor relay module through the sixth photoelectric front end, the uplink is infrared, the downlink is visible light, the communication index is 50Mbps @5m, and Pe < 10-6Penetrating the glass; downloading data from the outside through an outside communication interface, wherein the outside communication interface comprises RJ45, USB, Bluetooth or IR; temporary storage data of memory cardNot less than 7 days.
Furthermore, the outdoor acquisition end is powered by a fourth power supply circuit, the fourth power supply circuit comprises a battery and a fourth power supply management module, the fourth power supply management module directly supplies power to the outdoor acquisition end by mains supply or supplies power to the outdoor acquisition end by the battery, and the battery can be used for emergency standby. The outdoor acquisition terminal initiatively initiates data acquisition or passive reception, communicates once every a period of time, the interval time is not more than 4 hours, and can be configured online.
In this embodiment, the method performs a related design from the following three aspects to reduce the power consumption of the device, specifically as follows:
(1) design of working mode
The acquisition node, the indoor acquisition base station and the indoor relay module are all in a sleep state at ordinary times, working current is below mA level in the sleep state, power consumption is very low, and when data needs to be transmitted, the acquisition node, the indoor acquisition base station and the indoor relay module are activated in two activation modes of an equipment self-contained activation module or an outdoor acquisition end;
(2) software protocol design
The data transmission protocol between the acquisition node and the indoor acquisition base station adopts an efficient protocol design method, mainly comprises two access modes, namely a multi-user access mode and a polling mode, and preferentially adopts the polling mode, so that the power consumption of equipment can be further reduced;
(3) modulation scheme design
Because the speed of the all-optical communication network is not very high, the pulse modulation mode with the highest power efficiency can be adopted, and the power consumption is relatively lower compared with the modulation modes such as OFDM and the like by combining with efficient constellation design and communication signal processing.
Referring to fig. 6, a scene construction example of the method includes that 4 acquisition nodes are distributed under a single indoor acquisition base station to construct an all-optical network. The outdoor acquisition end is connected with the computer through a network cable, and the acquisition nodes are connected with the indoor communication equipment in a short distance through the network cable; the distance between the outdoor acquisition end and the indoor relay module is 5m, the distance between the indoor relay module and the indoor acquisition base station is 20m, and the distance between the indoor acquisition base station and the nearest acquisition node is 4 m.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A data transmission and control method based on visible light communication is characterized by comprising the following steps:
a plurality of acquisition nodes are arranged indoors, and each acquisition node is connected with one indoor communication device to realize bidirectional communication;
an indoor acquisition base station is arranged to serve as a data transmission center of the plurality of acquisition nodes, and the indoor acquisition base station is connected with each acquisition node through a visible light link and an infrared link to realize bidirectional communication;
an indoor relay module is arranged to serve as a relay station of the indoor acquisition base station and an outdoor all-optical communication local area network, and the indoor relay module is connected with the indoor acquisition base station through a visible light link and an infrared link to achieve bidirectional communication;
an outdoor acquisition end is arranged to communicate with the outside, an all-optical communication local area network is formed by the indoor relay module, the indoor acquisition base station, the acquisition nodes and the indoor communication equipment based on visible light, and the outdoor acquisition end is connected with the indoor relay module by adopting a visible light link and an infrared link so as to realize bidirectional communication;
the acquisition node sequentially transmits uplink data of the indoor communication equipment to the outdoor acquisition end through the indoor acquisition base station and the indoor relay module through the infrared link, the outdoor acquisition end acquires information from the outside according to the uplink data after receiving the uplink data to form downlink data, the downlink data are sequentially transmitted to the acquisition node through the indoor relay module and the indoor acquisition base station through the visible light link, and the acquisition node feeds the downlink data back to the indoor communication equipment.
2. The visible light communication-based data transmission and control method according to claim 1, wherein the acquisition node includes an equipment communication interface, a first data processing module, and a first photoelectric front end, the equipment communication interface and the first photoelectric front end are respectively connected to the first data processing module, connected to an indoor communication device through the equipment communication interface, and communicated with an indoor acquisition base station through the first photoelectric front end.
3. The visible light communication-based data transmission and control method according to claim 2, wherein the collection node and the indoor communication device are interconnected in a short distance by using a 100Mbps ethernet transmission technology, and the device communication interface is an RJ45 interface and is connected with the indoor communication device through a network cable.
4. The visible light communication-based data transmission and control method according to claim 2, wherein the collection node is powered by a first power supply circuit, the first power supply circuit includes a first rechargeable battery, a first power supply management module, and a first sleep activation detection module, the first rechargeable battery is connected to a mains power socket for charging, and is electrically connected to the collection node through the first power supply management module, and the first sleep activation detection module is electrically connected to the first power supply management module, so that the collection node is activated only during operation and is in a sleep state at ordinary times.
5. The visible light communication-based data transmission and control method according to claim 1, wherein the indoor acquisition base station includes a second photoelectric front end, a second data processing module, and a third photoelectric front end, the second photoelectric front end and the third photoelectric front end are respectively connected to the second data processing module, and communicate with the acquisition node through the second photoelectric front end, and communicate with the indoor relay module through the third photoelectric front end.
6. The visible light communication-based data transmission and control method according to claim 5, wherein the indoor acquisition base station is powered by a second power supply circuit, the second power supply circuit includes a second rechargeable battery, a second power supply management module and a second sleep activation detection module, the second rechargeable battery is connected to a mains power socket for charging, and is electrically connected to the indoor acquisition base station through the second power supply management module, and the second sleep activation detection module is electrically connected to the second power supply management module, so that the indoor acquisition base station is activated only when operating and is in a sleep state at ordinary times.
7. The visible light communication-based data transmission and control method according to claim 1, wherein the indoor relay module includes a fourth photoelectric front end, a third data processing module, a fifth photoelectric front end, and a data cache module, the fourth photoelectric front end, the fifth photoelectric front end, and the data cache module are respectively connected to the third data processing module, and communicate with the indoor acquisition base station through the fourth photoelectric front end, and communicate with the outdoor acquisition terminal through the fifth photoelectric front end.
8. The visible light communication-based data transmission and control method according to claim 7, wherein the indoor relay module is powered by a third power supply circuit, the third power supply circuit includes a third rechargeable battery, a third power supply management module, and a third sleep activation detection module, the third rechargeable battery is connected to the commercial power socket for charging, and is electrically connected to the indoor relay module through the third power supply management module, and the third sleep activation detection module is electrically connected to the third power supply management module, so that the indoor relay module is activated only during operation and is in a sleep state at ordinary times.
9. The visible light communication-based data transmission and control method as claimed in claim 1, wherein the outdoor acquisition end includes a sixth photoelectric front end, a fourth data processing module, an external communication interface and a memory card, the sixth photoelectric front end, the external communication interface and the memory card are respectively connected to the fourth data processing module, the sixth photoelectric front end communicates with the indoor relay module, and data is downloaded from the outside through the external communication interface, and the external communication interface includes RJ45, USB, Bluetooth and IR.
10. The visible light communication-based data transmission and control method according to claim 9, wherein the outdoor acquisition terminal is powered by a fourth power supply circuit, the fourth power supply circuit includes a battery and a fourth power supply management module, and the fourth power supply management module is powered by a commercial power directly or by the battery.
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| CN114422029A (en) * | 2022-01-19 | 2022-04-29 | 东莞信大融合创新研究院 | Information collection system based on visible light communication |
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Application publication date: 20201201 |