Light load information hierarchical management method and system in conference scenario

Abstract

The present application relates to the field of optical carrier information technology, solves the problem that the existing technology cannot dynamically control the encryption level and hierarchical transmission of optical carrier information based on the identity and real-time location of participants in a conference scenario, and provides an optical carrier information hierarchical management method and system in a conference scenario. The method comprises: obtaining the identity information of each participant in an indoor conference scenario and the real-time location information corresponding to each participant; then pre-classifying the conference to determine the level of the conference, and the encryption level of each second optical carrier information corresponding to the conference content differs for conferences of different levels; for each participant's identity information and real-time location information, the LED light source with the LED optical carrier information emission module selectively sends different second optical carrier information to the receiver matched with each participant's identity information. The present application realizes high-precision personnel positioning, dynamic encryption level adjustment and directional hierarchical transmission of information, and improves the intelligent level of conference management.

Description

[0001] This invention is a divisional application of the invention patent application filed on June 30, 2024, entitled "Meeting Management Method and System Based on Indoor Optical Information Communication" with application number 202410864489.0. Technical Field

[0002] This invention relates to the field of optical information communication technology, and in particular to a method and system for hierarchical management of optical information in a conference setting. Background Technology

[0003] In traditional offline meeting management systems, participants typically need to use handwriting or simple online management on smart terminals. This approach suffers from low informatization, low efficiency, and poor interactivity. These traditional methods cannot meet the requirements for real-time and efficient management of meeting content, particularly in areas such as participant identification and interactive discussion. To address these issues, optical communication technology has been introduced into meeting management. First, traditional wired meeting management usually requires complex cabling, while optical communication, through optical information transmission, eliminates the need for additional wired connections, reducing cabling costs and complexity. Second, optical communication uses light... Information is transmitted through the air, free from wired limitations, allowing for more flexible meeting venue layouts and greater equipment portability, suitable for meeting needs in various scenarios and layouts. Furthermore, optical information transmission, compared to traditional wired communication, is more resistant to interference, as it is unaffected by electromagnetic interference, improving communication stability and reliability. Finally, optical information communication reduces cable usage compared to traditional wired communication, offering better environmental and energy-saving benefits. Introducing optical information communication technology to upgrade offline meeting management systems not only improves the efficiency and security of information transmission but also provides participants with a more convenient and real-time interactive experience.

[0004] Chinese patent CN112118046A discloses an encrypted electronic voting system and method based on indoor LED visible light communication, comprising: initializing an asymmetric key; wherein, the asymmetric key is a public-private key pair randomly generated between the LED lighting device, the terminal device, and the arbitrator module, and the electronic voting system initializes the asymmetric key before each vote; a central control device is directly connected to the indoor LEDs, sending the electronic voting document data to the LEDs, and sending light signals through each LED to its corresponding terminal device; the terminal device receives the electronic voting document and displays it on the display screen, voters select candidates on the touch screen, and then the terminal device transmits the voting results through encryption. The optical signal is sent to the arbitrator in the arbitrator module; the arbitrator receives and verifies the voting results from the terminal device, and after successful verification, sends the voting results to the LED lighting device via optical signal through encryption; the encryption algorithm used in the encryption operation is asymmetric encryption, which does not require any information to be shared before communication, thus avoiding collusion attacks; even if the private key of the terminal device is stolen, as long as the private key of the arbitrator is not stolen, the timestamp cannot be forged; the message is kept confidential to everyone except the LED lighting device and the terminal device; the LED lighting device decrypts the information sent by the arbitrator and sends the voting results to the central control device; the central control device counts the voting results sent by each LED and publishes the overall voting results.

[0005] Chinese patent CN114124221A discloses a visible light communication encoding method based on a camera, a conference check-in system, and a method, comprising: when the host initiates roll call, the conference check-in control terminal sends a specific sequence for verification to a server; the server retains the specific sequence and sends it to an LED light controller; the LED light controller loads the specific sequence onto an LED light using a visible light communication encoding method; the front-facing camera of a participant's smartphone captures light signals from the LED light, converts them into electrical signals, and reconstructs the specific sequence through sampling and decision-making; the participant's smartphone integrates a sequence containing the participant's identity information with the specific sequence and sends it to the server; The server determines the identity of the person checking in by comparing a specific sequence from the meeting check-in control terminal with a sequence containing the participant's identity information from the participant's smartphone, and records whether the check-in was successful in the server. The server processes the check-in information recorded in step S3, compares it with the pre-stored participant list, determines the absent participants, and sends feedback information to the meeting check-in control terminal. The interactive interface of the meeting check-in control terminal informs the host, who then determines whether anyone is absent based on the feedback information. In step S4, the meeting check-in control terminal is connected to a timer. The host selects the duration for cyclically sending roll call information. After the timer expires, a control signal is automatically sent to the server, thereby closing the roll call channel.

[0006] While the aforementioned patents CN112118046A and CN114124221A provide some solutions for conference management using optical information communication, in large-scale conference scenarios, the transmission of optical information involving multiple light sources and attendees' receiving ends may lead to a series of problems: First, compared with the above two patents, they mainly focus on the management of single aspects such as voting and check-in, without comprehensively considering the multi-faceted comprehensive management of the conference by optical communication in large-scale conferences; second, the above patents do not consider using optical communication to achieve hierarchical sharing of conference content, but only use optical communication to transmit check-in and voting information.

[0007] Therefore, how to achieve hierarchical sharing of meeting content and multi-faceted meeting management using optical communication in large-scale meeting scenarios is an urgent problem to be solved. Summary of the Invention

[0008] In view of this, the present invention provides a method and system for hierarchical management of optical information in a conference setting, in order to solve the problem in the prior art that it is impossible to dynamically control the encryption level and hierarchical transmission of optical information based on the identity and real-time location of the participants in a conference setting.

[0009] The technical solution adopted in this invention is:

[0010] Firstly, a method for hierarchical management of optical information in a conference scenario, the method comprising:

[0011] By demultiplexing the first optical carrier information carrying the RFID tag and fusing the RFID positioning data with the visual camera positioning data, the identity information of each participant and the real-time location information of each participant can be obtained. The first optical carrier information carries the positioning beacon light signal of the RFID tag information.

[0012] Once the attendance statistics are completed, if a meeting instruction is received, the meeting will be pre-classified to determine its level. For meetings of different levels, the encryption level of each second optical carrier information corresponding to the meeting content will differ. The second optical carrier information carries the data optical signal of the encrypted meeting content.

[0013] For each participant's identity information and real-time location information, the LED light source with the LED light carrier information transmission module is controlled to selectively send different second light carrier information to the receiver that matches the identity information of each participant.

[0014] Preferably, after the attendance statistics are completed, if a meeting instruction is received, the meeting level is determined. Before the encryption level of the second optical carrier information differs for different meeting levels, the following steps are also included:

[0015] Obtain real-time meeting instructions, wherein the instructions include at least roll call instructions and meeting start instructions;

[0016] Before the attendance statistics are completed, determine whether the number of attendees is above the preset minimum number of attendees, and determine whether it is necessary for all attendees to attend the meeting based on the attendees' identity information.

[0017] If all values ​​are yes, then the sign-in statistics are complete.

[0018] Preferably, obtaining the identity information of each participant and the real-time location information of each participant in an indoor meeting scenario based on the first optical carrier information related to the identity tag on the RFID card of each participant includes:

[0019] Obtain the identity-related tag information from the RFID cards of each participant, and embed the tag information into the first optical information;

[0020] By using hybrid multiplexing technology, the first optical carrier information after embedding tag information is processed to obtain multiplexed optical carrier information;

[0021] The multiplexed optical information is demultiplexed using an optical filter to obtain the real-time tag information of each participant;

[0022] The real-time tag information is compared with the preset tag information to determine the identity information of each participant;

[0023] Based on the first optical carrier information, the initial location information of each participant is obtained, and the initial location information is used as RFID positioning data;

[0024] Visual positioning data is acquired by deploying visual cameras in indoor meeting scenarios;

[0025] The RFID positioning data and the visual positioning data are timestamped and fused to obtain fused positioning data.

[0026] The initial location information is corrected by using the Kalman filter algorithm and combining the fused positioning data to obtain the real-time location information.

[0027] Preferably, the process of using hybrid multiplexing technology to process each first optical carrier information after embedding tag information to obtain multiplexed optical carrier information includes:

[0028] Obtain the target optical communication parameters pre-assigned to each of the first optical carrier information, wherein the target optical communication parameters include: target optical wavelength, target frequency bandwidth, and target coding sequence;

[0029] Based on the target optical communication parameters, each of the first optical carrier information after embedding tag information is modulated to obtain each of the first modulation signals that match the target optical communication parameters;

[0030] The first modulation signals are combined to obtain the multiplexed optical carrier information.

[0031] Preferably, the step of obtaining the initial location information of each participant based on the first optical carrier information, and using the initial location information as RFID positioning data, includes:

[0032] The multiplexed optical carrier information is obtained, and each first modulation signal is separated according to the preset disassembly rules;

[0033] Decode each of the first modulation signals;

[0034] Based on the first optical carrier information obtained after decoding, the real-time location information of each participant is determined, and the initial location information is used as RFID positioning data.

[0035] Preferably, the meeting levels include: confidential, high-level, and ordinary. When a meeting instruction is received, the meeting level is determined. For different meeting levels, the encryption level of the second optical carrier information differs, including:

[0036] When the meeting is classified as confidential, the encryption level of the second optical carrier information is the highest.

[0037] When the meeting level is a high-level meeting, the encryption level of the second optical carrier information is intermediate;

[0038] When the conference is at the ordinary level, the encryption level of the second optical carrier information is the lowest. Among them, the target optical wavelength, target frequency bandwidth and target coding sequence of the target optical communication parameters corresponding to the second optical carrier information with different encryption levels are different.

[0039] Preferably, controlling the LED light source with an LED light-carrying information transmitting module to selectively transmit different second light-carrying information to a receiver that matches the identity information and real-time location information of each participant includes:

[0040] Double-check whether there have been any changes to the identity information and real-time location information of each participant;

[0041] The system will issue a notification if there are any changes to the identity information or real-time location information of the participants, and will not send a second optical carrier information.

[0042] When it is determined that there is no change in the identity information and real-time location information of each participant, the LED light source is controlled to either not send or send different second optical carrier information to the receiver that matches the identity information of each participant in a time-division manner.

[0043] Preferably, when it is determined that the identity information and real-time location information of each participant have not changed, controlling the LED light source to not send or send different second optical carrier information to the receiver matching the identity information of each participant in a time-division manner includes:

[0044] The system confirms the identity and location information of attendees in real time at preset time intervals.

[0045] Dynamically adjust the meeting level based on the meeting progress and required information;

[0046] The timing-division transmission strategy of LED light sources is controlled based on the meeting level and the identity information of each participant.

[0047] Based on the time-division transmission strategy, determine the second optical carrier information that needs to be sent to match the participant's identity information;

[0048] Orthogonal frequency division multiplexing technology is used to isolate the second optical carrier information of different receivers, and a narrow beam LED light source and optical lens group are used to control the transmission angle of the second optical carrier information within the target transmission angle range;

[0049] Based on the target transmission angle range, different technically isolated second optical carrier information is sent to a receiver that matches the identity information of each participant.

[0050] Preferably, the time-division transmission strategy for controlling the LED light source based on the meeting level and the identity information of each participant includes:

[0051] The time is divided into multiple time slots, and a time slot is assigned to each participant within the communication range of each LED light source.

[0052] Within each time slot, the LED light source is controlled to send the corresponding second optical carrier information to the corresponding receiver;

[0053] When changes in the location and / or identity information of attendees are detected, the time slot allocation and the content of the second optical carrier information are dynamically adjusted.

[0054] Regularly send heartbeat signals to confirm the receiver status and ensure the stability of the optical communication link;

[0055] Within each time slot, the LED light source transmits second optical carrier information according to a predetermined modulation method. The second optical carrier information of different LED light sources may be the same or different.

[0056] Secondly, the present invention provides a hierarchical management system for optical information in a conference setting. The system includes: a controller, an LED light source with an LED optical information transmitting module, multiple receivers with LED optical information receiving modules, an identity authentication module for verifying the binding relationship between the receiver and the participant's identity, an encryption engine for dynamically generating encryption parameters for second optical information based on the conference level, and a built-in biometric module in each receiver for decrypting the second optical information after verifying the matching of the participant's biometric features. The controller controls the LED light source and the receivers to implement the method described in the first aspect.

[0057] In summary, the beneficial effects of the present invention are as follows:

[0058] The present invention provides a hierarchical management method and system for optical information in a meeting scenario. The method includes: demultiplexing first optical information carrying RFID tags, fusing RFID positioning data and visual camera positioning data to obtain the identity information of each participant and the real-time location information of each participant, wherein the first optical information carries a positioning beacon light signal of RFID tag information; after the check-in statistics are completed, if a meeting instruction is received, the meeting is pre-classified to determine the meeting level; for different meeting levels, the encryption level of each second optical information corresponding to the meeting content is different, wherein the second optical information carries a data light signal of encrypted meeting content; for the identity information and real-time location information of each participant, an LED light source with an LED optical information transmitting module is controlled to selectively send different second optical information to a receiver matching the identity information of each participant. This invention solves the problem of difficulty in achieving information encryption and targeted transmission based on individual differences in conference scenarios by constructing a hierarchical management mechanism that combines identity recognition, real-time positioning, and optical communication technologies. First, it acquires the identity and real-time location information of each participant. Then, using RFID tags and optical information multiplexing technology, it embeds individual identity codes into optical signals to achieve identity verification and location tracking. Before the meeting begins, the system automatically determines the meeting level based on attendance statistics and preset rules, and configures differentiated optical information encryption parameters for different levels, such as light wavelength, frequency bandwidth, and encoding sequence, ensuring greater security for information in higher-level meetings. Based on this, the controller dynamically adjusts the LED light source's emission strategy according to the participant's identity and location information, using a time-division multiplexing method to directionally send encrypted optical information matching their identity, opening the communication link only to receivers whose identities and locations match. Through this dynamic hierarchical control mechanism, not only is the targeted delivery and secure transmission of confidential information guaranteed, but the accuracy and intelligence level of meeting management are also significantly improved. Attached Figure Description

[0059] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments of the present invention will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, and these are all within the protection scope of the present invention.

[0060] Figure 1 This is a schematic diagram illustrating the overall workflow of the optical information hierarchical management method in a conference scenario according to Embodiment 1 of the present invention.

[0061] Figure 2 This is a schematic diagram of the process for obtaining the identity of each participant in Embodiment 1 of the present invention;

[0062] Figure 3 This is a schematic diagram of the process of processing each first optical carrier information after embedding tag information using hybrid multiplexing technology in Embodiment 1 of the present invention;

[0063] Figure 4 This is a schematic diagram of the decoding process of the first optical carrier information in Embodiment 1 of the present invention;

[0064] Figure 5 This is a schematic diagram of the process of hierarchical sharing of conference content using optical information communication in Embodiment 1 of the present invention;

[0065] Figure 6 This is a schematic diagram of the process for classifying and grading the encryption of a meeting in Embodiment 1 of the present invention;

[0066] Figure 7 This is a schematic diagram of the matching process between the identities of different participants and the second optical carrier information communication in Embodiment 1 of the present invention;

[0067] Figure 8 for Figure 7 A further detailed flowchart of step S543;

[0068] Figure 9 This is a schematic diagram of the time-division transmission strategy for the LED light source of the present invention;

[0069] Figure 10 This is a schematic diagram illustrating the data flow of the optical information hierarchical management system in a conference scenario according to Embodiment 2 of the present invention. Detailed Implementation

[0070] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order 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," and "outer," etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, the element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. Where there is no conflict, embodiments of the present invention and the various features thereof can be combined with each other, all of which are within the scope of protection of the present invention.

[0071] Example 1

[0072] Please see Figure 1 Embodiment 1 of the present invention provides a hierarchical management method for optical information in a conference scenario, the method comprising:

[0073] S1: Obtain the identity of each participant in the indoor meeting scenario and the first optical carrier information sent by each participant's receiver;

[0074] Specifically, firstly, an LED light source equipped with an LED light-carrying information emitting module emits first light-carrying information, containing specific encoded information for subsequent positioning. Attendees in the conference venue are equipped with receivers, including photodiodes or light sensors. These receivers can detect and receive the first light-carrying information emitted from the LED light source, and measure and analyze various signal parameters, such as signal strength, angle of arrival, and time of arrival. This allows them to obtain the identities of each attendee in the indoor conference setting and the first light-carrying information received by each attendee's receiver. For example, the indoor conference setting may include at least: technology conferences, corporate annual meetings, election meetings, and academic seminars. The identities of each attendee may include at least: researchers, scientists, engineers, industry experts, and audience members in technology conferences; senior managers, middle managers, and ordinary employees in corporate annual meetings; speakers, researchers, students, and audience members in academic seminars; and vote counters, candidates, and voters in election meetings. Different attendees will receive corresponding optical information based on their identity. For example, when the speaker calls on an attendee, that attendee's receiver will receive the optical information emitted through the LED light source, generating a relevant notification. If the receiver sends feedback, the host's receiver will also receive the corresponding feedback notification.

[0075] In one embodiment, please refer to Figure 2 S1 includes:

[0076] S11: Obtain the identity-related tag information on the RFID cards of each participant, and embed the tag information into the first optical information;

[0077] Specifically, firstly, the identity-related tag information on the RFID cards of each participant is obtained through an RFID reader or RFID reader module, ensuring accurate and unique identity information is extracted from each participant's RFID card. Then, the text-based identity information is digitized for processing in a computer system, for example, using Base64 encoding to convert the digitized identity information into a series of characters that can be transmitted in communication, ensuring effective transmission of information in optical communication. Error correction coding (such as Hamming codes) is introduced to detect and correct potential errors when necessary, ensuring data accuracy during optical communication transmission. An asymmetric encryption algorithm is selected to encrypt the participant's identity information, which can only be decrypted by a legitimate recipient with the decryption key, generating encrypted data to ensure the confidentiality of the identity information during transmission. Finally, the encoded and encrypted identity information is embedded into the first optical carrier information through a special tag or sequence.

[0078] S12: Using hybrid multiplexing technology, the first optical carrier information after embedding tag information is processed to obtain the processed multiplexed optical carrier information;

[0079] Specifically, hybrid multiplexing technology is a method that comprehensively applies multiple multiplexing technologies to improve the efficiency and performance of communication systems. For example, in optical communication systems, hybrid multiplexing technology combines wavelength division multiplexing (WDM), frequency division multiplexing (FDM), and code division multiplexing (CDM) to process the first optical carrier information embedded with tag information. The specific steps include: modulating the first optical carrier information embedded with tag information for each participant using different optical wavelengths, enabling the transmission of each participant's optical carrier information on a specific optical wavelength to achieve parallel transmission among multiple participants; using frequency division multiplexing on each optical wavelength 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; based on frequency division multiplexing, using CDM to modulate the signal of each participant with a unique code, ensuring that multiple participants can transmit on 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 optical communication systems in large-scale conference scenarios, ensuring that the information of each participant is transmitted efficiently and reliably during transmission.

[0080] In one embodiment, please refer to Figure 3 S12 includes:

[0081] S121: Obtain the target optical communication parameters pre-assigned to each of the first optical carrier information, wherein the target optical communication parameters include: target optical wavelength, target frequency bandwidth and target coding sequence;

[0082] Specifically, according to the pre-set communication scheme, target optical communication parameters are assigned to the first optical carrier information after each embedded tag information. These parameters are determined in the system design stage based on communication requirements and scene characteristics. Specifically, the target optical wavelength specifies the transmission wavelength of each optical carrier information, the target frequency bandwidth specifies the transmission frequency range of each signal, and the target coding sequence defines the unique code used by each signal.

[0083] S122: Based on the target optical communication parameters, modulate each of the first optical carrier information after embedding tag information to obtain each of the first modulation signals that match the target optical communication parameters;

[0084] Specifically, each first optical carrier information embedded with tag information is modulated according to the pre-allocated 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. The purpose is to enable each optical carrier information to be transmitted according to the communication scheme designed by the system.

[0085] S123: Combine each of the first modulation signals to obtain the multiplexed optical carrier information.

[0086] Specifically, the modulated first optical carrier information is combined into a multiplexed optical carrier information. This multiplexed optical carrier information integrates the modulation characteristics of each optical carrier information to form a comprehensive optical carrier information stream. This merging process is part of the hybrid multiplexing technology, which ensures that multiple signals can be effectively multiplexed on the same communication medium, thereby improving the capacity and efficiency of the communication system.

[0087] S13: Demultiplex the multiplexed optical information using an optical filter to obtain the real-time tag information of each participant;

[0088] Specifically, optical filters are used to demultiplex the multiplexed optical carrier information to separate the individual optical carrier information embedded with tag information. Based on pre-set target optical communication parameters, the optical filters identify and extract each optical carrier information, restoring it to its original modulation state. 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. The optical filters include optical wavelength filters, frequency bandwidth filters, and demodulators. These filters, based on preset target optical communication parameters, respectively filter out each optical carrier information and demodulate them to restore the original signal.

[0089] S14: Compare the real-time tag information with the historical tag information to determine the identity of each participant.

[0090] Specifically, the tag information obtained from demultiplexing is extracted to form a set of real-time tag information. The system pre-records the historical tag information of participants, including identity and permissions. This information can be stored in a database or other data storage media. The real-time tag information is compared with the historical tag information, and the identity of each participant is confirmed by matching identity tags and other information. By successfully extracting real-time tag information from the multiplexed optical information and confirming the identity of each participant through comparison, an efficient and accurate identity recognition process is achieved. Assuming that the tag information embedded on the RFID card of participant A contains the identity information "Manager", the real-time "Manager" tag information is compared with the previously recorded historical information to confirm that A is "Manager". Similarly, a similar comparison is performed for other participants to accurately confirm the identity of each person. This ensures that the identity of participants can be accurately identified in the meeting management system.

[0091] S2: Based on the first optical carrier information, obtain the real-time location information of each participant;

[0092] Specifically, for the initial optical information of each participant, the system performs feature analysis, including light intensity, waveform pattern, and signal timing. These features reflect the propagation path and arrival time of the optical information, providing a foundation for subsequent location information extraction. Using a multi-point positioning algorithm, based on the optical information of each participant, real-time location information is calculated. Multi-point positioning algorithms include triangulation and base station positioning; the specific choice depends on the system design and requirements. The acquired real-time location information is stored in the system database or other data storage media. This design enables the system to update and track the location of participants in real time, providing more comprehensive information for meeting management. Further, S2 includes the following steps:

[0093] S2 includes:

[0094] S21: Obtain the multiplexed optical carrier information and separate each first modulation signal according to the preset disassembly rules;

[0095] S22: Decode each of the first modulation signals;

[0096] S23: Based on the first optical carrier information obtained after decoding, determine the real-time location information of each participant.

[0097] S3: Obtain real-time meeting instructions, wherein the instructions include at least roll call instructions and meeting start instructions;

[0098] Specifically, the system receives real-time instructions from the central control unit or the host via receiving devices, including network connections and sensor devices. These instructions are then parsed. If a roll call instruction is received, the system initiates the corresponding roll call statistics function according to a pre-set procedure, including recording and collecting the identity information of each participant to ensure accurate tracking of everyone's participation. For a meeting start instruction, a pre-set meeting initiation procedure is executed, including adjusting the meeting room environment and assigning permissions to specific personnel. The processing of meeting start instructions ensures timely response to the meeting control needs of the host or the central control unit. By flexibly controlling the meeting based on real-time instructions, the system improves the real-time nature and flexibility of meeting management, offering significant advantages for handling various meeting needs, such as emergency meetings or roll call statistics.

[0099] S4: If a roll call instruction is received, then based on the real-time location information and the identity information of each participant, the attendance statistics of each participant are recorded.

[0100] Specifically, by utilizing the previously embedded optical information to accurately identify each participant, and by integrating real-time location and identity information, attendance statistics are compiled, including recording the time, location, and identity information of each participant to ensure the accuracy and comprehensiveness of the attendance information. Through intelligent management of participant attendance, combined with optical communication technology, the attendance process for multiple people can be completed instantly, improving the efficiency and accuracy of attendance tracking.

[0101] In one embodiment, please refer to Figure 4 S4 includes:

[0102] S41: If a roll call instruction is received, obtain the target location information for each participant's sign-in based on their identity.

[0103] Specifically, if a roll call instruction is received, the target location information for each participant's check-in is obtained based on their identity; the target location information for each participant's check-in is obtained in advance, including specific location coordinates in the meeting venue.

[0104] S42: Compare the real-time location information and the target location information to obtain the relative position information between the real-time location and the target location;

[0105] Specifically, the real-time location information of the participants is compared with their target location information to calculate the relative position information between the real-time location and the target location. The relative position information includes at least the distance and direction between the real-time location and the target location.

[0106] 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, then it is counted as a failed check-in.

[0107] S44: If, based on the relative position information, the offset between the real-time position and the target position is determined to be less than or equal to a preset offset threshold, then the check-in is considered successful.

[0108] S5: After the attendance statistics are completed, if a meeting instruction is received, the meeting will be pre-classified. Based on the meeting classification, the identity information of each participant, and the real-time location information, the light source will be controlled to emit the second optical carrier information corresponding to the meeting content to the receiver that matches the identity information of each participant.

[0109] Specifically, based on the received meeting instructions, the upcoming meetings are pre-classified. The presiding person classifies the meetings according to the meeting topic and discussion content. After pre-classification, the system ensures targeted transmission of meeting content based on the identity and real-time location information of each participant. This ensures that optical information related to the meeting content is accurately conveyed to the corresponding participants. Based on the pre-classification results, the system controls the light source to emit secondary optical information corresponding to the meeting content. Light source control includes selecting appropriate wavelengths, frequency bandwidths, and encoding sequences. The secondary optical information emitted by the light source is then directionally transmitted to receivers matched to the identities of each participant. This ensures that the meeting content is correctly conveyed to the appropriate participants. By enabling targeted control of the light source at the start of the meeting based on its nature and participant information, and achieving targeted transmission of meeting content, the efficiency of the meeting management system and the user experience are improved.

[0110] In one embodiment, please refer to Figure 5 S5 includes:

[0111] S51: Before the attendance statistics are completed, determine whether the number of attendees is above the preset minimum number of attendees, and determine from the attendees' identity information whether it is necessary for all attendees to attend the meeting.

[0112] S52: If all are yes, then the sign-in statistics are complete;

[0113] S53: When a meeting instruction is received, the meeting level is determined. The encryption level of the second optical carrier information differs for different meeting levels.

[0114] S54: For the identity information and real-time location information of each participant, control the LED light source with LED optical information transmission module to selectively send different second optical information to the receiver that matches the identity information of each participant.

[0115] In specific embodiments, the meeting levels include at least public, confidential, and top secret;

[0116] The meeting levels include: confidential, high-level, and general. S53 includes:

[0117] S531: When the conference level is confidential, the encryption level of the second optical carrier information is the highest;

[0118] S532: When the conference level is a high-level conference, the encryption level of the second optical carrier information is intermediate;

[0119] S533: When the conference level is a normal conference, the encryption level of the second optical carrier information is the lowest. Among them, the target optical wavelength, target frequency bandwidth and target coding sequence of the target optical communication parameters corresponding to the second optical carrier information with different encryption levels are different.

[0120] Furthermore, S54 includes:

[0121] S541: Reconfirm whether there have been any changes to the identity information and real-time location information of each participant;

[0122] S542: Issue a notification if there are changes in the identity information and real-time location information of the participants, and do not send a second optical carrier information;

[0123] S543: When it is determined that there is no change in the identity information and real-time location information of each participant, the LED light source is controlled to not send or send different second optical carrier information to the receiver that matches the identity information of each participant in a time-division manner.

[0124] S543 includes:

[0125] S5431: Preset time intervals for real-time confirmation of participant identity and location information;

[0126] S5432: Dynamically adjust the meeting level based on the meeting progress and needs information;

[0127] S5433: Control the time-division transmission strategy of LED light source based on the meeting level and the identity information of each participant;

[0128] S5434: Based on the time-division transmission strategy, determine the second optical carrier information that needs to be sent to match the identity information of the participants;

[0129] S5435: Send different second optical carrier information to the receiver that matches the identity information of each participant.

[0130] Further, S5433 includes:

[0131] The time is divided into multiple time slots, and a time slot is assigned to each participant within the communication range of each LED light source.

[0132] Within each time slot, the LED light source is controlled to send the corresponding second optical carrier information to the corresponding receiver;

[0133] When changes in the location and / or identity information of attendees are detected, the time slot allocation and the content of the second optical carrier information are dynamically adjusted.

[0134] Regularly send heartbeat signals to confirm the receiver status and ensure the stability of the optical communication link;

[0135] Within each time slot, the LED light source transmits second optical carrier information according to a predetermined modulation method. The second optical carrier information of different LED light sources may be the same or different.

[0136] Specifically, based on the received meeting instructions, the system pre-classifies the upcoming meetings, classifying them into public, confidential, and top secret levels according to their confidentiality nature to ensure information security.

[0137] Based on the identity of each participant, participants are divided into multiple levels, and the target location information corresponding to each level is obtained from the real-time location information.

[0138] Specifically, participants are categorized into different levels based on their status, responsibilities, or other characteristics within the meeting organization. This facilitates personalized management of participants at different levels. For each level, their target location information is obtained from real-time location data. This step ensures that the optical information is delivered to participants at each level in a targeted manner.

[0139] Based on the meeting level and target location information, the LED light source is controlled to emit the second light carrier information to the receiver of the corresponding level personnel.

[0140] Example 2

[0141] Please see Figure 10The present invention also provides a system for hierarchical management of optical information in a conference setting. This hierarchical management system for optical information in a conference setting is characterized by comprising: a controller; an LED light source with an LED optical information transmitting module; multiple receivers with LED optical information receiving modules; an identity authentication module for verifying the binding relationship between the receiver and the participant's identity; an encryption engine for dynamically generating encryption parameters for second optical information based on the conference level; a built-in biometric module in each receiver for decrypting the second optical information after verifying the matching of the participant's biometric features; and the controller controlling the LED light source and the receivers to implement the method described in Embodiment 1.

[0142] The above system has the advantages of efficient meeting management and good confidentiality.

[0143] The functional blocks shown in the above-described structural diagram can be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, they can be, for example, electronic circuits, application-specific integrated circuits (ASICs), appropriate firmware, plug-ins, function cards, etc. When implemented in software, the elements of this invention are programs or code segments used to perform the required tasks. The programs or code segments can be stored on a machine-readable medium or transmitted over a transmission medium or communication link via data signals carried in a carrier wave. "Machine-readable medium" can include any medium capable of storing or transmitting information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, radio frequency (RF) links, etc. Code segments can be downloaded via computer networks such as the Internet, intranets, etc.

[0144] It should also be noted that the exemplary embodiments mentioned in this invention describe methods or systems based on a series of steps or apparatus. However, this invention is not limited to the order of the steps described above; that is, the steps can be performed in the order mentioned in the embodiments, or in a different order, or several steps can be performed simultaneously.

[0145] The above description is merely a specific embodiment of the present invention. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the protection scope of the present invention.

Claims

1. A method for hierarchical management of optical information in a conference setting, characterized in that, The method includes: By demultiplexing the first optical carrier information carrying the RFID tag and fusing the RFID positioning data with the visual camera positioning data, the identity information of each participant and the real-time location information of each participant can be obtained. The first optical carrier information is a positioning beacon light signal carrying RFID tag information. Once the attendance statistics are completed, if a meeting instruction is received, the meeting will be pre-classified to determine its level. Based on the meeting level, the encryption level of each second optical carrier information corresponding to the meeting content will be configured. The encryption level of the second optical carrier information corresponding to different meeting levels will be different. The second optical carrier information is a data optical signal carrying encrypted meeting content. For each participant's identity information and real-time location information, the LED light source with the LED light carrier information transmission module is controlled to selectively send different second light carrier information to the receiver that matches the identity information of each participant. The step of controlling an LED light source with an LED optical information transmitting module to selectively transmit different second optical information to a receiver that matches the identity information and real-time location information of each participant includes: Double-check whether there are any changes to the identity information and real-time location information of each participant; The system will issue a notification if there are any changes to the identity information or real-time location information of the participants, and will not send a second optical carrier information. When it is determined that there is no change in the identity information and real-time location information of each participant, the LED light source is controlled to not send or send different second optical carrier information to the receiver that matches the identity information of each participant in a time-division manner. When it is determined that the identity information and real-time location information of each participant have not changed, controlling the LED light source to not send or send different second optical carrier information to the receiver matching the identity information of each participant in a time-division manner includes: The system confirms the identity and location information of attendees in real time at preset time intervals. Dynamically adjust the meeting level based on the meeting progress and required information; The timing-division transmission strategy of LED light sources is controlled based on the meeting level and the identity information of each participant. Based on the time-division transmission strategy, determine the second optical carrier information that needs to be sent to match the participant's identity information; Orthogonal frequency division multiplexing technology is used to isolate the second optical carrier information of different receivers, and a narrow beam LED light source and optical lens group are used to control the transmission angle of the second optical carrier information within the target transmission angle range; Based on the target transmission angle range, different technically isolated second optical carrier information is sent to a receiver that matches the identity information of each participant.

2. The method for hierarchical management of optical information in a conference scenario according to claim 1, characterized in that, After the attendance statistics are completed, if a meeting instruction is received, the meeting level is determined. Before the encryption level of the second optical carrier information differs for different meeting levels, the process also includes: Obtain real-time meeting instructions, wherein the instructions include at least roll call instructions and meeting start instructions; Before the attendance statistics are completed, determine whether the number of attendees is above the preset minimum number of attendees, and determine whether it is necessary for all attendees to attend the meeting based on the attendees' identity information. If all values ​​are yes, then the sign-in statistics are complete.

3. The method for hierarchical management of optical information in a conference scenario according to claim 1, characterized in that, The process of demultiplexing the first optical carrier information carrying the RFID tag, fusing RFID positioning data with visual camera positioning data, and obtaining the identity information of each participant and the corresponding real-time location information of each participant includes: Obtain the identity-related tag information from the RFID cards of each participant, and embed the tag information into the first optical information; By using hybrid multiplexing technology, the first optical carrier information after embedding tag information is processed to obtain multiplexed optical carrier information; The multiplexed optical information is demultiplexed using an optical filter to obtain the real-time tag information of each participant; The real-time tag information is compared with the preset tag information to determine the identity information of each participant; Based on the first optical carrier information, the initial location information of each participant is obtained, and the initial location information is used as RFID positioning data; Visual positioning data is acquired by deploying visual cameras in indoor meeting scenarios; The RFID positioning data and the visual positioning data are timestamped and fused to obtain fused positioning data. The initial location information is corrected by using the Kalman filter algorithm and combining the fused positioning data to obtain the real-time location information.

4. The method for hierarchical management of optical information in a conference scenario according to claim 3, characterized in that, The process of using hybrid multiplexing technology to process each first optical carrier information after embedding tag information to obtain multiplexed optical carrier information includes: Obtain the target optical communication parameters pre-assigned to each of the first optical carrier information, wherein the target optical communication parameters include: target optical wavelength, target frequency bandwidth, and target coding sequence; Based on the target optical communication parameters, each of the first optical carrier information after embedding tag information is modulated to obtain each of the first modulation signals that match the target optical communication parameters; The first modulation signals are combined to obtain the multiplexed optical carrier information.

5. The method for hierarchical management of optical information in a conference scenario according to claim 3, characterized in that, The step of obtaining the initial location information of each participant based on the first optical carrier information, and using the initial location information as RFID positioning data, includes: The multiplexed optical carrier information is obtained, and each first modulation signal is separated according to the preset disassembly rules; Decode each of the first modulation signals; Based on the first optical carrier information obtained after decoding, the real-time location information of each participant is determined, and the initial location information is used as RFID positioning data.

6. The method for hierarchical management of optical information in a conference scenario according to claim 1, characterized in that, The meeting levels include: Confidential, High-Level, and Standard. When a meeting instruction is received, the meeting level is determined. For different meeting levels, the encryption level of the second optical carrier information differs, including: When the meeting is classified as confidential, the encryption level of the second optical carrier information is the highest. When the meeting level is a high-level meeting, the encryption level of the second optical carrier information is intermediate; When the conference is at the ordinary level, the encryption level of the second optical carrier information is the lowest. Among them, the target optical wavelength, target frequency bandwidth and target coding sequence of the target optical communication parameters corresponding to the second optical carrier information with different encryption levels are different.

7. The method for hierarchical management of optical information in a conference scenario according to claim 1, characterized in that, The time-division transmission strategy for controlling the LED light source based on the meeting level and the identity information of each participant includes: The time is divided into multiple time slots, and a time slot is assigned to each participant within the communication range of each LED light source. Within each time slot, the LED light source is controlled to send the corresponding second optical carrier information to the corresponding receiver; When changes in the location and / or identity information of attendees are detected, the time slot allocation and the content of the second optical carrier information are dynamically adjusted. Regularly send heartbeat signals to confirm the receiver status and ensure the stability of the optical communication link; Within each time slot, the LED light source transmits second optical carrier information according to a predetermined modulation method. The second optical carrier information of different LED light sources may be the same or different.

8. A hierarchical management system for optical information in a conference setting, characterized in that, The system includes: a controller, an LED light source with an LED light-carrying information transmitting module, multiple receivers with LED light-carrying information receiving modules, an identity authentication module for verifying the binding relationship between the receiver and the participant's identity, an encryption engine for dynamically generating encryption parameters for the second light-carrying information based on the meeting level, and a built-in biometric module in the receiver for decrypting the second light-carrying information after verifying the matching of the participant's biometric features. The controller controls the LED light source and the receivers to implement the method described in any one of claims 1 to 7.

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