Conference Management Method and System Based on Indoor Optical Carrier Information Communication

Abstract

The present invention relates to the field of optical carrier information technology, and solves the problem that in the existing large-scale conference scenarios, the insufficient utilization of optical carrier information affects conference management. It provides a conference management method and system based on indoor optical carrier information communication. The method includes: obtaining the identity information of each participant in the indoor conference scenario and each first optical carrier information sent by the receivers corresponding to each participant; obtaining the real-time location information of each participant; obtaining real-time conference instructions; if a roll call instruction is received, then according to the real-time location information and the identity information of each participant, conduct a sign-in statistics for each participant; after the sign-in statistics are completed, if a meeting start instruction is received, then perform a pre-classification process on the conference, and according to the conference classification, the identity information of each participant and the real-time location information, control the light source to emit each second optical carrier information corresponding to the conference content to the receivers matching the identity information of each participant. The present invention has the effects of efficient conference management and good confidentiality.

Description

Technical Field

[0001] The present invention relates to the technical field of optical carrier information communication, and particularly relates to a conference management method and system based on indoor optical carrier information communication. Background Art

[0002] In traditional offline conference management systems, participants usually need to take notes by hand or perform simple online management on intelligent terminals. This method has problems such as low informatization level, low efficiency, and poor interactivity. These traditional forms cannot meet the requirements of real-time and efficient management of conference-related content. In particular, there are challenges in aspects such as participant identity confirmation and discussion and interaction of conference content. To solve these problems, optical carrier information communication technology has been introduced into conference management. First, traditional wired conference management usually requires complex wiring work, while optical carrier information communication transmits information through optical carriers without the need for additional wired connections, reducing the cost and complexity of wiring. Second, optical carrier information communication transmits information through optical carriers in the air, without being restricted by wires, making the layout of the conference venue more flexible and the equipment more portable, suitable for conference requirements in different scenarios and layouts. Moreover, optical carrier information propagates in optical carrier information communication, which has better anti-interference performance compared to traditional wired communication. Optical carrier information is not affected by electromagnetic interference, improving the stability and reliability of communication. Finally, optical carrier information communication uses optical carrier information transmission, reducing the use of cables compared to traditional wired communication, and having good environmental protection and energy-saving effects. Introducing optical carrier information communication technology for the upgrade of offline conference management systems not only improves the efficiency and security of information transmission but also provides a more convenient and real-time interaction experience for participants.

[0003] The existing Chinese patent CN112118046A discloses an encrypted electronic voting and election system and method based on indoor LED visible light communication, including: initializing the asymmetric key; wherein, the asymmetric key is a public-private key pair randomly generated between the LED lighting device, the terminal device and the arbiter module, and the electronic voting and election system initializes the asymmetric key before each vote; the central control device is directly connected to the indoor LED, sends the electronic document data to be voted on to the LED, and sends optical signals to the corresponding terminal device through each LED; the terminal device receives the electronic voting document and displays it on the display screen, the voter selects the candidate on the touch display screen, and then the terminal device sends the voting result to the arbiter in the arbiter module through optical signals through encryption operations; the arbiter receives and verifies the voting result from the terminal device, and after verification, sends the voting result to the LED lighting device through optical signals through encryption operations; the encryption algorithm used in the encryption operation is asymmetric encryption, and no information needs to be shared before communication, avoiding collusion attacks; even if the private key of the terminal device is stolen, as long as the private key of the arbiter is not stolen, the timestamp cannot be forged; the message is kept confidential from everyone except the LED lighting device and the terminal device; the LED lighting device decrypts the information sent by the arbiter and sends the voting result to the central control device; the central control device counts the voting results sent by each LED and announces the overall voting result.

[0004] The existing Chinese patent CN114124221A discloses a visible light communication coding method, a meeting check-in system and method based on a camera, including: after the host starts the roll call, the meeting check-in control terminal sends a specific sequence for verification to the server, the server retains the specific sequence and sends the specific sequence to the LED lamp controller, and the LED lamp controller loads the specific sequence on the LED lamp in the manner of the visible light communication coding method; the front camera of the attendee's smartphone at the meeting captures the optical signal from the LED lamp, converts it into an electrical signal, and restores the specific sequence through sampling and decision-making. The attendee's smartphone at the meeting integrates the sequence containing the attendee's identity information and the specific sequence and then sends it to the server; the server determines the identity of the attendee who checks in by comparing the specific sequence from the meeting check-in control terminal and the sequence containing the attendee's identity information from the attendee's smartphone at the meeting, and records whether the check-in is successful in the server; the server processes the check-in information recorded in step S3, compares it with the pre-stored attendee list, determines the absent persons, and then sends the feedback information to the meeting check-in control terminal, and the main host is informed by the interaction interface of the meeting check-in control terminal, and the main host determines whether there are absent persons according to the feedback information; in step S4, the meeting check-in control terminal is connected to a timer, the main host selects the duration of the cyclic sending of the roll call information, and after reaching the timed time, automatically sends a control signal to the server to close the roll call channel.

[0005] Although the above-mentioned patents CN112118046A and CN114124221A provide some solutions for meeting management using optical carrier information communication, however, in large-scale meeting scenarios, the optical carrier information transmission involving multiple light sources and the receivers of the participants may cause a series of problems: First, comparing the above two patents, they mainly focus on the management of single aspects such as voting and signing in, and do not comprehensively consider the multi-faceted comprehensive management of the meeting by optical communication in large-scale meetings; Second, the above patents do not consider using optical communication to achieve hierarchical sharing of meeting content, but only transmit signing-in and voting information through optical communication.

[0006] Therefore, how to use optical carrier information communication to achieve hierarchical sharing of meeting content and conduct multi-faceted meeting management in large-scale meeting scenarios is an urgent problem to be solved. Summary of the Invention

[0007] In view of this, the present invention provides a meeting management method and system based on indoor optical carrier information communication to solve the technical problem in the prior art that in large-scale meeting scenarios, the insufficient utilization of optical carrier information affects meeting management.

[0008] The technical solution adopted by the present invention is as follows:

[0009] In a first aspect, a meeting management method based on indoor optical carrier information communication, the method includes:

[0010] S1: Obtain the identity information of each participant in the indoor meeting scenario and each first optical carrier information sent by the receivers corresponding to each participant;

[0011] S2: Obtain the real-time location information of each participant according to each of the first optical carrier information;

[0012] S3: Obtain real-time meeting instructions, where the instructions at least include a roll call instruction and a start meeting instruction;

[0013] S4: If a roll call instruction is received, perform sign-in statistics on each participant according to the real-time location information and the identity information of each participant;

[0014] S5: After the sign-in statistics are completed, if a start meeting instruction is received, perform pre-hierarchical processing on the meeting, and control the light source to emit each second optical carrier information corresponding to the meeting content to the receivers matching the identity information of each participant according to the meeting level, the identity information of each participant, and the real-time location information.

[0015] Preferably, the S1 includes:

[0016] S11: Obtain the tag information related to the identity on the RFID cards of each preset participant, and embed the tag information into the first optical carrier information;

[0017] S12: Use the hybrid multiplexing technology to process each first optical carrier information embedded with tag information to obtain multiplexed optical carrier information;

[0018] S13: Demultiplex the multiplexed optical carrier information using an optical filter to obtain the real-time tag information of each participant;

[0019] S14: Compare the real-time tag information with the preset tag information to determine the identity information of each participant.

[0020] Preferably, the S12 includes:

[0021] S121: Obtain the target optical communication parameters pre-allocated to each first optical carrier information, where the target optical communication parameters include: target optical wavelength, target frequency bandwidth, and target coding sequence;

[0022] S122: Modulate each first optical carrier information embedded with tag information according to the target optical communication parameters to obtain each first modulation signal matching the target optical communication parameters;

[0023] S123: Combine each first modulation signal to obtain the multiplexed optical carrier information.

[0024] Preferably, the S2 includes:

[0025] S21: Obtain the multiplexed optical carrier information, and split out each first modulation signal according to the preset disassembly rule;

[0026] S22: Decode each first modulation signal;

[0027] S23: Determine the real-time position information of each participant according to each first optical carrier information obtained after decoding.

[0028] Preferably, the S5 includes:

[0029] S51: Before the sign-in statistics are completed, determine whether the number of participants is above the preset lower limit of the number of people in the meeting, and determine whether all necessary participants are present at the meeting from the participant identity information;

[0030] S52: When both are yes, then determine that the sign-in statistics are completed;

[0031] S53: When a meeting start instruction is received, determine the level of the meeting. For meetings of different levels, the encryption level of the second optical carrier information is different;

[0032] S54: For the identity information and real-time location information of each participant, control the LED light source with an LED optical carrier information transmitting module to selectively transmit different second optical carrier information to the receivers matching the identity information of each participant.

[0033] Preferably, the levels of the meeting include: confidential level, high-level meeting, and ordinary-level meeting. The S53 includes:

[0034] S531: When the level of the meeting is confidential, the encryption level of the second optical carrier information is the highest;

[0035] S532: When the level of the meeting is a high-level meeting, the encryption level of the second optical carrier information is medium;

[0036] S533: When the level of the meeting is an ordinary-level meeting, the encryption level of the second optical carrier information is the lowest. Among them, there are differences in the target optical wavelength, target frequency bandwidth, and target coding sequence in the target optical communication parameters corresponding to the second optical carrier information with different encryption levels.

[0037] Preferably, the S54 includes:

[0038] S541: Determine again whether the identity information and real-time location information of each participant have changed;

[0039] S542: Give a prompt for the participants whose identity information and real-time location information have changed, and do not send the second optical carrier information;

[0040] S543: When it is determined that the identity information and real-time location information of each participant have not changed, control the LED light source to not send or send different second optical carrier information to the receivers matching the identity information of each participant in a time-division manner.

[0041] Preferably, the S543 includes:

[0042] S5431: Real-time confirm the identity information and location information of the participants at a preset time interval;

[0043] S5432: Dynamically adjust the meeting level according to the meeting process and requirement information;

[0044] S5433: Control the time-division transmission strategy of the LED light source according to the meeting level and the identity information of each participant;

[0045] S5434: Determine the second optical carrier information that needs to be sent to the receivers matching the identity information of the participants according to the time-division transmission strategy;

[0046] S5435: Send different second optical carrier information to the receivers matching the identity information of each participant.

[0047] Preferably, the S5433 includes:

[0048] Divide time into multiple time slots, and allocate one time slot to each participant within the communication range of each LED light source;

[0049] Within each time slot, control the LED light source to send corresponding second optical carrier information to the corresponding receiver;

[0050] When it is found that the position and / or identity information of the participant changes, dynamically adjust the time slot allocation and the content of the second optical carrier information;

[0051] Regularly send heartbeat signals to confirm the status of the receiver to ensure the stability of the optical communication link;

[0052] Within each time slot, the LED light source sends the second optical carrier information according to a predetermined modulation method, and the second optical carrier information of different LED light sources may be the same or different.

[0053] In a second aspect, the present invention provides a conference management system based on indoor optical carrier information communication. The system includes: a controller, an LED light source with an LED optical carrier information transmitting module, and multiple receivers with LED optical carrier information receiving modules. The controller controls the LED light source and the receivers to implement any one of the methods described above.

[0054] In summary, the beneficial effects of the present invention are as follows:

[0055] The conference management method and system based on indoor optical carrier information communication provided by the present invention, the method includes: S1: obtaining the identity information of each participant in the indoor conference scenario and each first optical carrier information sent by the receivers corresponding to each participant; S2: obtaining the real-time position information of each participant according to each of the first optical carrier information; S3: obtaining real-time conference instructions, wherein the instructions at least include a roll call instruction and a meeting start instruction; S4: if a roll call instruction is received, then according to the real-time position information and the identity information of each participant, conduct a sign-in statistics for each participant; S5: after the sign-in statistics is completed, if a meeting start instruction is received, then perform a pre-classification process on the meeting, and according to the meeting classification, the identity information and real-time position information of each participant, control the light source to emit each second optical carrier information corresponding to the meeting content to the receivers matching the identity information of each participant. Facing complex large-scale conference scenarios and the mobility of participants, etc., the present invention can accurately understand the position distribution of each participant by obtaining the real-time position information of each participant, and combined with the identity information of each participant, not only can accurate sign-in statistics be performed, but also personalized management and services can be better carried out according to the identities of the participants; by obtaining real-time conference instructions, quickly respond and perform corresponding operations, such as conducting sign-in statistics when a roll call instruction is received, and performing a pre-classification process on the meeting when a meeting start instruction is received, and according to the meeting classification, the identities and real-time positions of each participant, intelligently control the light source to emit each second optical carrier information corresponding to the meeting content to the receivers matching the identities of each participant, realizing targeted transmission of meeting content, improving the efficiency of information sharing, and through the comprehensive processing of real-time position information, identity information and conference instructions, the present invention improves the overall conference experience of the participants, making the conference management real-time dynamic management, more intelligent, efficient and personalized. Description of the Drawings

[0056] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to these drawings, and these are all within the protection scope of the present invention.

[0057] Figure 1 It is a schematic flow chart of the overall work of the conference management method based on indoor optical carrier information communication in Embodiment 1 of the present invention;

[0058] Figure 2 It is a schematic flow chart of obtaining the identity of each participant in Embodiment 1 of the present invention;

[0059] Figure 3 It is a schematic flow chart of processing each first optical carrier information after embedding tag information by using a hybrid multiplexing technology in Embodiment 1 of the present invention;

[0060] Figure 4 It is a schematic flowchart of the first optical carrier information decoding in Embodiment 1 of the present invention;

[0061] Figure 5 It is a schematic flowchart of using optical carrier information communication to perform hierarchical sharing of meeting content in Embodiment 1 of the present invention;

[0062] Figure 6 It is a schematic flowchart of encrypting and grading the meeting level in Embodiment 1 of the present invention;

[0063] Figure 7 It is a schematic flowchart of the matching process between the identities of different participants and the second optical carrier information communication in Embodiment 1 of the present invention;

[0064] Figure 8 is Figure 7 a further refined schematic flowchart of step S543 in

[0065] Figure 9 It is a schematic flowchart of the time-division transmission strategy of the LED light source of the present invention. Specific Embodiments

[0066] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It should be noted that, in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or sequence between these entities or operations. In the description of the present invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation on the present invention. Moreover, the term "comprises", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, the elements defined by the statement "comprising..." do not exclude the existence of additional identical elements in the process, method, article or device comprising the said elements. If there is no conflict, the embodiments of the present invention and the various features in the embodiments may be combined with each other, and all are within the protection scope of the present invention.

[0067] Example 1

[0068] Please refer to Figure 1 , Example 1 of the present invention provides a conference management method based on indoor optical carrier information communication, and the method includes:

[0069] S1: Obtain the identities of each participant in the indoor conference scenario and each first optical carrier information sent by the receivers of each participant;

[0070] Specifically, first, the LED light source with an LED optical carrier information emission module will emit the first optical carrier information, which contains specific coding information for subsequent positioning processes. The participants in the conference venue are equipped with receivers, and the receivers include photodiodes or optical sensors, etc. The receivers can detect and receive the first optical carrier information emitted from the LED light source, and measure and analyze various parameters of the signal, such as signal strength, arrival angle, and arrival time, to obtain the identities of each participant in the indoor conference scenario and each first optical carrier information received by the receivers of each participant. For example, the indoor conference scenario at least includes: scientific and technological conferences, enterprise annual conferences, election meetings, and academic seminars. The identity information of each participant at least includes: researchers, scientists, engineers, industry experts, and audiences in scientific and technological conferences; senior management, middle management, and ordinary employees in enterprise annual conferences; keynote speakers, researchers, students, and audiences in academic seminars; ballot counters, candidates, and voters in election meetings. Different participant identity information will have corresponding optical carrier information sent. For example, when the conference keynote speaker calls the name of a certain participant, the receiver of the participant will receive the optical carrier information emitted through the LED light source, thereby generating relevant prompt information. If the receiver sends feedback information, the corresponding receiver of the host will also receive the corresponding feedback prompt information.

[0071] In one embodiment, please refer to Figure 2 , S1 includes:

[0072] S11: Obtain the label information related to the identity on the RFID card of each preset participant, and embed the label information into the first optical carrier information;

[0073] Specifically, first, obtain the identity-related tag information on the RFID cards of each preset participant through an RFID reader or RFID reading and writing module, ensuring that accurate and unique identity information is extracted from each participant's RFID card; subsequently, digitize the identity information in text form for processing in a computer system. For example, use Base64 encoding to convert the digitized identity information into a series of characters that can be transmitted in communication, ensuring that the information can be effectively transmitted in optical communication; introduce error correction coding (such as Hamming code) to detect and correct possible errors when necessary, ensuring data accuracy during optical communication transmission; select an asymmetric encryption algorithm to encrypt the identity information of the participants, and only legal recipients with the decryption key can decrypt it to generate encrypted data, ensuring the confidentiality of the identity information during transmission. Finally, embed the encoded and encrypted identity information into the first optical carrier information through special marks or sequences.

[0074] S12: Use hybrid multiplexing technology to process each first optical carrier information embedded with tag information to obtain the processed multiplexed optical carrier information;

[0075] Specifically, hybrid multiplexing technology is a method that comprehensively applies multiple multiplexing technologies to improve the efficiency and performance of a communication system. For example, in an optical communication system, hybrid multiplexing technology combines wavelength-division multiplexing, frequency-division multiplexing, and code-division multiplexing to process each first optical carrier information embedded with tag information. The specific steps are as follows: Modulate each first optical carrier information corresponding to each participant embedded with tag information using different optical wavelengths to enable the optical carrier information of each participant to be transmitted at a specific optical wavelength, achieving parallel transmission among multiple participants; at each optical wavelength, use frequency-division multiplexing to modulate the signals of different participants onto different frequency bands, which helps to further improve the capacity of the communication system and avoid frequency conflicts and interference; on the basis of frequency-division multiplexing, use code-division multiplexing to modulate the signal of each participant with a unique code, which ensures that multiple participants can transmit at the same frequency without interfering with each other; through hybrid multiplexing technology, the processed multiplexed optical carrier information will have higher capacity and better anti-interference performance. This comprehensive application can improve the working efficiency of the optical communication system in a large-scale conference scenario and ensure the efficient and reliable transmission of the information of each participant during transmission.

[0076] In one embodiment, please refer to Figure 3 , where S12 includes:

[0077] S121: Obtain the target optical communication parameters pre-allocated to each of the first optical carrier information, where the target optical communication parameters include: target optical wavelength, target frequency bandwidth, and target coding sequence;

[0078] Specifically, according to a pre-set communication scheme, target optical communication parameters are assigned to each first optical carrier information embedded with tag information. These parameters are determined according to communication requirements and scenario characteristics during the system design phase. Specifically, the target optical wavelength specifies the transmission wavelength of each optical carrier information, the target frequency bandwidth stipulates the transmission frequency range of each signal, and the target coding sequence defines the unique coding used for each signal.

[0079] S122: Modulate each of the first optical carrier information embedded with tag information according to the target optical communication parameters to obtain each first modulation signal that matches the target optical communication parameters;

[0080] Specifically, modulate each first optical carrier information embedded with tag information according to the pre-assigned target optical communication parameters. This modulation process is carried out according to the target optical wavelength, target frequency bandwidth, and target coding sequence to ensure that the transmission characteristics of each signal match the predetermined target, aiming to enable each optical carrier information to be transmitted according to the communication scheme designed for the system.

[0081] S123: Combine each of the first modulation signals to obtain the multiplexed optical carrier information.

[0082] Specifically, combine the modulated first optical carrier information into a multiplexed optical carrier information. This multiplexed optical carrier information synthesizes the modulation characteristics of each optical carrier information, forming a comprehensive optical carrier information stream. This combination process is part of the hybrid multiplexing technology, ensuring that multiple signals can be effectively multiplexed on the same communication medium, improving the capacity and efficiency of the communication system.

[0083] S13: Demultiplex the multiplexed optical carrier information using an optical filter to obtain the real-time tag information of each participant;

[0084] Specifically, use an optical filter to demultiplex the multiplexed optical carrier information to separate each optical carrier information embedded with tag information. The optical filter identifies and extracts each optical carrier information according to the pre-set target optical communication parameters and restores them to their original modulation states. This process ensures the independence and identifiability of each optical carrier information. Through demultiplexing, the real-time tag information of each participant is successfully obtained. Among them, the optical filter includes an optical wavelength filter, a frequency bandwidth filter, and a demodulator. These filters screen out each optical carrier information according to the preset target optical communication parameters and demodulate and restore them to the original signals.

[0085] S14: Compare the real-time tag information with the historical tag information to determine the identities of each participant.

[0086] Specifically, the tag information obtained from demultiplexing is extracted to form a set of real-time tag information. The system has previously recorded the historical tag information of the participants, including identity, permissions, etc. These information can be stored in a database or other data storage media. The real-time tag information is compared with the historical tag information. By matching information such as identity tags, the identity of each participant is confirmed. By successfully extracting the real-time tag information from the multiplexed optical carrier information and confirming the identity of each participant through comparison, an efficient and accurate identity recognition process is achieved. Suppose the tag information embedded in the RFID card of participant A contains the identity information "Manager". The real-time obtained "Manager" tag information is compared with the previously recorded historical information to confirm that A has the identity of "Manager". Similarly, similar comparisons are made for other participants to accurately confirm the identity of each person, which ensures that the identity of the participants can be accurately recognized in the conference management system.

[0087] S2: According to each of the first optical carrier information, obtain the real-time location information of each participant;

[0088] Specifically, for the first optical carrier information of each participant, the system performs feature analysis. The features include light intensity, waveform pattern, and signal timing. These features can reflect the propagation path and arrival time of the optical carrier information, providing a basis for subsequent location information extraction; using a multi-point positioning algorithm, based on the optical carrier information of each participant, calculate the real-time location information. The multi-point positioning algorithm includes triangulation and base station positioning. The specific selection depends on the system design and requirements; the obtained real-time location information will be stored in the system database or other data storage media. Such a design enables the system to update and track the location of the participants in real time, providing more comprehensive information for conference management. Further, S2 includes the following steps:

[0089] The said S2 includes:

[0090] S21: Obtain the multiplexed optical carrier information, and according to the preset disassembly rules, split out each first modulation signal;

[0091] S22: Decode each first modulation signal;

[0092] S23: According to each of the first optical carrier information obtained after decoding, determine the real-time location information of each participant.

[0093] S3: Obtain real-time conference instructions, where the instructions at least include a roll call instruction and a meeting start instruction;

[0094] Specifically, the receiving device obtains real-time instructions from the central control terminal or the host. The obtaining methods include network connection and sensor devices. The received instructions are parsed. If a roll call instruction is received, the corresponding roll call statistics function will be started according to the preset roll call operation process, including counting and recording the identity information of each participant to ensure that the participation status of all personnel can be accurately tracked. For the received meeting start instruction, the preset meeting start process will be executed, including adjusting the meeting room environment and allocating permissions for specific identity personnel. The processing of the meeting start instruction can promptly respond to the meeting control requirements of the host or the central control terminal. By flexibly controlling the progress of the meeting according to real-time meeting instructions, the real-time performance and flexibility of meeting management are improved, which has significant advantages for meeting requirements in various scenarios, such as emergency meetings or roll call statistics.

[0095] S4: If a roll call instruction is received, then according to the real-time location information and the identity information of each participant, conduct sign-in statistics for each participant;

[0096] Specifically, use the identity information embedded with optical carrier information before to accurately identify the identity of each participant. By integrating the real-time location information and the identity information, conduct sign-in statistics for the participants, including recording the sign-in time, location, and identity information to ensure the accuracy and comprehensiveness of the sign-in information. Through the intelligent management of the participants' sign-in and combining optical communication technology, complete the sign-in operations for multiple people instantly, improving the efficiency and accuracy of sign-in.

[0097] In one embodiment, please refer to Figure 4 , where S4 includes:

[0098] S41: If a roll call instruction is received, then according to the identity of each participant, obtain the target location information for each participant to sign in;

[0099] Specifically, if a roll call instruction is received, then according to the identity of each participant, obtain the target location information for each participant to sign in; obtain the pre-set target location information for each participant when signing in, and the target location information includes specific location coordinates in the meeting venue.

[0100] S42: Compare the real-time location information with the target location information to obtain the relative location information between the real-time location and the target location;

[0101] Specifically, compare the real-time obtained location information of the participant with its target location information, and calculate the relative location information between the real-time location and the target location. The relative location information includes at least: the distance and direction between the real-time location and the target location.

[0102] S43: If, based on the relative position information, it is determined that the offset between the real-time position and the target position is greater than a preset offset threshold, it is counted as a failed check-in.

[0103] S44: If, based on the relative position information, it is determined that the offset between the real-time position and the target position is less than or equal to the preset offset threshold, it is counted as a successful check-in.

[0104] S5: After the check-in statistics are completed, if a meeting start instruction is received, pre-classify the meeting. Based on the meeting classification, the identity information of each participant, and the real-time position information, control the light source to emit respective second optical carrier information corresponding to the meeting content to the receivers matching the identity information of each participant.

[0105] Specifically, according to the received meeting start instruction, pre-classify the upcoming meeting. Specifically, the main meeting host conducts classification based on the meeting theme and discussion content. After the pre-classification, based on the identity and real-time position information of each participant, ensure the directional transmission of the meeting content, so that the optical carrier information related to the meeting content can be accurately conveyed to the corresponding participants. According to the results of the pre-classification, control the light source to emit respective second optical carrier information corresponding to the meeting content. The control of the light source includes selecting appropriate optical wavelengths, frequency bandwidths, and coding sequences. The second optical carrier information emitted by the controlled light source will be directionally transmitted to the receivers matching the identity of each participant. This ensures that the meeting content is correctly conveyed to the corresponding participants. By being able to control the light source targeted according to the nature of the meeting and the information of the participants at the start of the meeting, realizing the directional transmission of the meeting content, this helps to improve the efficiency and user experience of the meeting management system.

[0106] In one embodiment, please refer to Figure 5 , S5 includes:

[0107] S51: Before the check-in statistics are completed, determine whether the number of participants is above the preset lower limit of the meeting attendance number, and determine from the participant identity information whether all necessary participants are present at the meeting.

[0108] S52: When both are yes, determine that the check-in statistics are completed.

[0109] S53: When a meeting start instruction is received, determine the level of the meeting. For meetings of different levels, the encryption level of the second optical carrier information is different.

[0110] S54: For the identity information and real-time position information of each participant, control the LED light source with an LED optical carrier information emission module to selectively send different second optical carrier information to the receivers matching the identity information of each participant.

[0111] In a specific embodiment, the meeting levels at least include public, confidential, and top secret;

[0112] The levels of the meeting include: confidential level, high-level meeting, and ordinary-level meeting. The S53 includes:

[0113] S531: When the level of the meeting is the confidential level, the encryption level of the second optical-carrier information is the highest;

[0114] S532: When the level of the meeting is a high-level meeting, the encryption level of the second optical-carrier information is at the middle level;

[0115] S533: When the level of the meeting is an ordinary-level meeting, the encryption level of the second optical-carrier information is the lowest. Among them, there are differences in the target optical wavelength, target frequency bandwidth, and target coding sequence in the target optical communication parameters corresponding to the second optical-carrier information with different encryption levels.

[0116] Furthermore, the S54 includes:

[0117] S541: Determine again whether there are changes in the identity information and real-time location information of each participant;

[0118] S542: Give a prompt for the participants whose identity information and real-time location information have changed, and do not send the second optical-carrier information;

[0119] S543: When it is determined that there are no changes in the identity information and real-time location information of each participant, control the LED light source to send or not send different second optical-carrier information to the receivers matching the identity information of each participant in a time-division manner.

[0120] Among them, the S543 includes:

[0121] S5431: Real-time confirm the identity information and location information of the participants at a preset time interval;

[0122] S5432: Dynamically adjust the meeting level according to the meeting process and requirement information;

[0123] S5433: Control the time-division sending strategy of the LED light source according to the meeting level and the identity information of each participant;

[0124] S5434: Determine the second optical-carrier information that needs to be sent to the receivers matching the identity information of the participants according to the time-division sending strategy;

[0125] S5435: Send different second optical-carrier information to the receivers matching the identity information of each participant.

[0126] Furthermore, the S5433 includes:

[0127] Divide time into multiple time slots, and allocate one time slot to each participant within the communication range of each LED light source;

[0128] Within each time slot, control the LED light source to send corresponding second optical carrier information to the corresponding receiver;

[0129] When it is found that the position and / or identity information of the participant changes, dynamically adjust the time slot allocation and the content of the second optical carrier information;

[0130] Regularly send heartbeat signals to confirm the status of the receiver to ensure the stability of the optical communication link;

[0131] Within each time slot, the LED light source sends the second optical carrier information according to a predetermined modulation method, and the second optical carrier information of different LED light sources may be the same or different.

[0132] Specifically, the system performs pre-classification processing on the upcoming meeting according to the received meeting instruction. The meeting levels are divided into public, confidential, and top-secret levels according to different confidentiality natures to ensure information security.

[0133] According to the identities of the participants, divide the participants into multiple levels of personnel, and obtain the target position information corresponding to each level of personnel in the real-time position information;

[0134] Specifically, according to the identities of the participants, divide them into different levels of personnel. Based on their status, responsibilities, or other identity characteristics in the meeting organization, this helps to achieve personalized management of different levels of personnel. For each level of personnel, obtain the target position information corresponding to them in the real-time position information. This step ensures that the optical carrier information can be transmitted to each level of personnel in a targeted manner.

[0135] According to the meeting level and the target position information, control the LED light source to emit each second optical carrier information to the receivers of the corresponding level of personnel.

[0136] Embodiment 2

[0137] The present invention also provides a system corresponding to the meeting management method based on indoor optical carrier information communication. The meeting management system based on indoor optical carrier information communication is characterized in that the system includes: a controller, an LED light source with an LED optical carrier information emission module, and multiple receivers with LED optical carrier information reception modules. The controller controls the LED light source and the receivers to implement the method described in Embodiment 1.

[0138] The above system has the advantages of high-efficiency meeting management and good confidentiality.

[0139] The functional blocks shown in the above-described structural block diagrams can be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, it can be, for example, an electronic circuit, an application-specific integrated circuit (ASIC), appropriate firmware, a plug-in, a functional card, and so on. When implemented in software, the elements of the present invention are programs or code segments for performing the required tasks. The program or code segment can be stored in a machine-readable medium or transmitted via a data signal carried in a carrier wave over a transmission medium or a communication link. A "machine-readable medium" can include any medium capable of storing or transmitting information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROMs, flash memories, erasable ROMs (EROMs), floppy disks, CD-ROMs, optical discs, hard disks, fiber-optic media, radio frequency (RF) links, and so on. The code segment can be downloaded via a computer network such as the Internet, an intranet, and so on.

[0140] It should also be noted that the exemplary embodiments mentioned in the present invention describe some methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the above steps, that is, the steps can be executed in the order mentioned in the embodiments, can be different from the order in the embodiments, or several steps can be executed simultaneously.

[0141] As described above, the above is only the specific implementation manner of the present invention. Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the above-described systems, modules, and units can refer to the corresponding processes in the foregoing method embodiments and will not be repeated herein. It should be understood that the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present invention.

Claims

1. A conference management method based on indoor optical wireless communication, characterized in that, The method includes: S1: Obtain the identity information of each participant in the indoor meeting scenario and the first optical carrier information received by the receivers corresponding to each participant; S2: Obtain the real-time location information of each participant according to each of the first optical carrier information; S3: Obtain real-time meeting instructions, where the instructions at least include roll call instructions and meeting start instructions; S4: If a roll call instruction is received, perform attendance statistics on each participant according to the real-time location information and the identity information of each participant; S5: After the attendance statistics are completed, if a meeting start instruction is received, perform pre-classification processing on the meeting. According to the meeting classification, the identity information of each participant, and the real-time location information, control the light source to emit second optical carrier information corresponding to the meeting content to the receivers matching the identity information of each participant; The S1 includes: S11: Obtain the tag information related to the identity on the RFID cards of each preset participant, and embed the tag information into the first optical carrier information; S12: Use hybrid multiplexing technology to process each of the first optical carrier information after embedding the tag information to obtain multiplexed optical carrier information; S13: Use an optical filter to demultiplex the multiplexed optical carrier information to obtain the real-time tag information of each participant; S14: Compare the real-time tag information with the preset tag information to determine the identity information of each participant; 2. The conference management method based on indoor optical carrier information communication according to claim 1, characterized in that, The S12 includes: S121: Obtain the target optical communication parameters pre-allocated to each of the first optical carrier information, where the target optical communication parameters include: target optical wavelength, target frequency bandwidth, and target coding sequence; S122: Modulate each of the first optical carrier information after embedding the tag information according to the target optical communication parameters to obtain first modulation signals matching the target optical communication parameters; S123: Combine each of the first modulation signals to obtain the multiplexed optical carrier information; 3. The conference management method based on indoor optical carrier information communication according to claim 2, wherein The S2 includes: S21: Obtain the multiplexed optical carrier information, and split out each first modulation signal according to a preset disassembly rule; S22: Decode each first modulation signal; S23: Determine the real-time location information of each participant according to each of the first optical carrier information obtained after decoding; 4. The conference management method based on indoor optical carrier information communication according to claim 3, wherein The S5 includes: S51: Before the attendance statistics are completed, determine whether the number of participants is above the preset lower limit of the number of people for the meeting, and determine from the identity information of the participants whether all necessary participants are present at the meeting; S52: When both are yes, determine that the attendance statistics are completed; S53: When a meeting start instruction is received, determine the level of the meeting. For meetings at different levels, the encryption level of the second optical carrier information is different; S54: For the identity information and real-time location information of each participant, control the LED light source with an LED optical carrier information emission module to selectively send different second optical carrier information to the receivers matching the identity information of each participant; 5. The conference management method based on indoor optical carrier information communication according to claim 4, characterized in that, The levels of the meeting include: confidential level, high-level meeting, and ordinary-level meeting. The S53 includes: S531: When the level of the meeting is the confidential level, the encryption level of the second optical carrier information is the highest; S532: When the level of the said meeting is a high-level meeting, the encryption level of the second optical-carrier information is medium; S533: When the level of the said meeting is an ordinary-level meeting, the encryption level of the second optical-carrier information is the lowest. Among them, there are differences in the target optical wavelength, target frequency bandwidth, and target coding sequence in the target optical communication parameters corresponding to the second optical-carrier information with different encryption levels.

6. The conference management method based on indoor optical carrier information communication according to claim 5, wherein, The said S54 includes: S541: Determine again whether there are changes in the identity information and real-time location information of each participant; S542: Give a prompt for the participants whose identity information and real-time location information have changed, and do not send the second optical-carrier information; S543: When it is determined that there are no changes in the identity information and real-time location information of each participant, control the said LED light source to send different second optical-carrier information to the receivers matching the identity information of each participant in a time-division manner.

7. The conference management method based on indoor optical carrier information communication according to claim 6, characterized in that The said S543 includes: S5431: Regularly confirm the identity information and location information of the participants at preset time intervals; S5432: Dynamically adjust the meeting level according to the meeting progress and requirement information; S5433: Control the time-division sending strategy of the LED light source according to the meeting level and the identity information of each participant; S5434: Determine the second optical-carrier information that needs to be sent to the receiver matching the identity information of the participant according to the said time-division sending strategy; S5435: Send different second optical-carrier information to the receivers matching the identity information of each participant.

8. The conference management method based on indoor optical carrier information communication according to claim 6, characterized in that, The said S5433 includes: Divide the time into multiple time slots, and assign a time slot to each participant within the communication range of each said LED light source; Within each time slot, control the LED light source to send the corresponding second optical-carrier information to the corresponding receiver; When it is found that the location or / and identity information of the participant changes, dynamically adjust the time slot assignment and the content of the second optical-carrier information; Regularly send a heartbeat signal to confirm the receiver status to ensure the stability of the optical communication link; Within each time slot, the said LED light source sends the second optical-carrier information according to a predetermined modulation method, and the second optical-carrier information of different LED light sources may be the same or different.

9. A conference management system based on indoor optical wireless communication, characterized in that, The said system includes: a controller, an LED light source with an LED optical-carrier information transmitting module, and multiple receivers with LED optical-carrier information receiving modules. The controller controls the said LED light source and the receivers to implement the method according to any one of claims 1 to 8.

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