Intelligent conference room control method based on UWB technology

Abstract

The invention discloses an intelligent conference room control method based on UWB technology, which needs to be realized by means of host equipment and UWB tag equipment carried by participants, and comprises the following steps: S1, matching the host equipment with the UWB tag equipment; s2, performing UWB label equipment path information analysis and conference participation condition judgment; s3, the host equipment sends an instruction to the access control system to allow the tag equipment carrying personnel to enter or leave, records execution time and personnel information, and judges the entering tag equipment carrying personnel at the same time; s4, executing scene control output; s5, returning to the step S1; the system realizes non-inductive attendance checking, identity recognition, path perception analysis and space scene control, omits the steps of active recognition attendance checking and manual active scene control, adapts to flexible and changeable management requirements of modern enterprises, greatly improves the working efficiency of enterprise employees, optimizes the human resource management process, and reduces the labor intensity of enterprises. Simpler and more convenient attendance checking and scene control experience are provided for the user.

Description

Technical Field

[0001] The invention belongs to the technical field of intelligent conference room management and relates to an intelligent conference room control method based on UWB technology. Background Art

[0002] The development background of space scene control and automatic attendance system stems from the growing demand of corporate meetings for employee attendance management efficiency and accuracy, participant authority management and meeting space scene automation control. In the early days, the identity identification and attendance of meeting participants in the company mainly relied on traditional methods such as manual sign-in and paper punch-in. This method is not only time-consuming and labor-intensive, but also prone to errors and difficult to adapt to the flexible and changing management needs of modern enterprises.

[0003] With the advancement of information technology, through computers, the Internet, biometrics and other technologies, employees' identities can be identified in real time, their attendance can be tracked, and the time when employees join and exit meetings can be automatically recorded to a certain extent, which can reduce human errors and be more convenient. Specifically, the existing technology can enable employees to actively use objects or biometric information with permission features such as faces and fingerprints on intelligent recognition devices. The host device of the device reads and analyzes the permission attribute data of characteristic objects or biometric information such as faces and fingerprints, and records the recognition time as a reference for attendance. However, the existing technology cannot realize the automatic control of the conference space scene, and manual active control of the intelligent control device is required to perform relevant controls.

[0004] Therefore, in order to further realize fully intelligent conference room control and attendance management of participants, it is also necessary to study the control methods of conference rooms. Summary of the invention

[0005] In order to realize fully intelligent conference room control and attendance management of participants, the present invention adopts the encryption technology of UWB base station identifying UWB tags to realize personnel path information analysis, and utilizes the active perception function of space equipment, which greatly improves work efficiency and optimizes the human resource management process.

[0006] The technical solution of the present invention is a smart conference room control method based on UWB technology. The key is that the above control method needs to be implemented with the help of a host device and a UWB tag device carried by the participants. The above host device includes a UWB access control recognition device, an access control output device, a space scene controller and a space scene control output device, and an attendance data output and storage device. The specific steps include:

[0007] S1. Matching of host device and UWB tag device;

[0008] S2. Analysis of UWB tag device path information and judgment of attendance:

[0009] S2-1. UWB tag device path information analysis: The host device uses UWB path information analysis to determine whether the person carrying the tag device in the area is about to enter or leave the conference room:

[0010] If the judgment result is yes, then go to step S2-2, otherwise return to step S1;

[0011] S2-2. The host device confirms the identity information of the person carried by the tag device and determines whether the person is a participant:

[0012] If the judgment result is yes, proceed to step S3, otherwise return to step S1;

[0013] S3. The host device sends a command to the access control system to allow the tag device to carry people to enter or leave, and records the execution time and personnel information. At the same time, it determines whether the person carrying the tag device entering is the first person to enter the conference room or whether the person carrying the tag device leaving is the last person to leave the conference room:

[0014] If any of the judgment results is yes, then go to step S4, otherwise return to step S1;

[0015] S4, execute scene control output;

[0016] S5. Return to S1 process.

[0017] Furthermore, the above-mentioned UWB tag device path information analysis in step S2 needs to be completed by relying on two UWB base stations that are fixedly installed in the monitoring area and can transmit and receive UWB signals. The host device communicates with the above-mentioned two UWB base stations and has obtained the relative positions of the two UWB base stations. The specific steps are:

[0018] S201, the host device detects a UWB tag device in the area;

[0019] S202, real-time data collection: the UWB base station exchanges data with the UWB tag device, and the data content includes the tag position, angle and device number information;

[0020] S203, positioning calculation:

[0021] After the two UWB base stations receive the tag's signal respectively, they calculate the distance or angle between the two UWB base stations and the UWB tag device based on the time difference or arrival angle difference of the signal, and determine the location of the person carrying the tag device:

[0022] S204, data fusion and filtering:

[0023] Collect the raw data of the position measurement of the same UWB tag device by two UWB base stations, and use the data fusion algorithm to process the raw data;

[0024] S205, trajectory tracking and analysis: generating tag movement trajectory and analyzing trajectory data to extract motion features;

[0025] S206, monitoring and prediction output: real-time monitoring of the tag movement trajectory, and prediction of the movement direction of the person carrying the tag device.

[0026] Specifically, the above positioning calculation is as follows: the UWB tag device is detected every 20ms, and the two-dimensional position of the tag is calculated by comparing and analyzing the distance between the UWB tag and two UWB base stations to determine whether the person carrying the tag device is outside or inside the conference room.

[0027] Specifically, the above raw data is processed as follows:

[0028] Set the error threshold of the calculated distance or angle result, remove the original data that exceeds the error threshold or increase or decrease the value of the original data for compensation. During the data processing, the motion characteristics of the object's acceleration and direction change need to be considered for dynamic compensation.

[0029] Specifically, the above method for generating the tag movement trajectory is to connect continuous position data points to form the above tag movement trajectory.

[0030] Specifically, the above-mentioned motion characteristics include speed, acceleration and dwell time.

[0031] Furthermore, in step S3, the specific method for judging whether the person carrying the tag device entering is the first person to enter the conference room is as follows: the host device continuously reads whether there is a UWB tag device in the conference room. If there is no UWB tag device in the conference room, the judgment result is yes.

[0032] Furthermore, in step S3, the specific method for determining whether the person carrying the tag device who leaves is the last person to leave the conference room is as follows: the host device continuously reads the UWB tag devices in the conference room and obtains the number of devices. If the number of devices is 0, the judgment result is yes.

[0033] Furthermore, in step S3, the host device sends an instruction to the access control system to execute access control authority confirmation and unlocking action.

[0034] It should be noted that in step S4, the host device executes scene control output, and the above-mentioned control output includes lighting control, projection start or stop, air conditioning control and curtain control.

[0035] The beneficial effects of the present invention are:

[0036] UWB is an ultra-wideband wireless communication technology. The present invention is a device and implementation method for attendance and spatial scene control based on this non-sensing recognition technology. Participants carry UWB tag devices such as cards and mobile phones as identity authentication information. The UWB tag device and the host device broadcast by sending specific UWB signals to detect each other's presence. Once other UWB devices are detected near the monitoring area, a handshake process begins to exchange a series of control information to negotiate communication parameters and authentication information to ensure the security of data transmission. After the handshake is completed, the two devices will establish a logical link based on the results of the negotiation to prepare for data transmission. After the connection is established, actual data packets begin to be transmitted between devices. These data packets contain location information, time information, control instructions or other types of information such as entering or leaving the conference room. The host device determines whether the tag is a participant at that location and time period by identifying the tag device information. If it is a participant, the host device records the tag time information, that is, the time of entering or leaving the conference room, and unlocks the door. At the same time, it determines whether the person is the first person to enter or the last person to leave the conference room. If it is the first person to enter or the last person to leave the conference room, the host performs corresponding scene control, such as turning on and off lights, closing or opening curtains, air conditioning, projection, etc.

[0037] The present invention provides a passive and non-contact attendance, identity recognition, and space scene control system device and method. In the present invention, the host device and the tag device use UWB encryption technology to transmit data. The host device continuously obtains the position data of the tag device within the monitoring range by confirming the identity of the person bound to the tag. The motion feature information such as speed and acceleration is calculated through these data, and the direction of movement of the person carrying the tag is inferred and the relevant scene control output is executed, thereby realizing active perception of path analysis and perception of people in the space.

[0038] The present invention realizes contactless attendance, identity recognition, path perception analysis, and spatial scene control, eliminating the steps of active attendance recognition and manual active scene control, adapting to the flexible and changeable management needs of modern enterprises, greatly improving the work efficiency of enterprise employees, optimizing the human resource management process, and providing users with a simpler and more convenient attendance and scene control experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a flow chart of the control method of the present invention.

[0040] Figure 2 This is a flow chart of the UWB tag device path information analysis of the present invention. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] Example

[0043] In this embodiment, according to the attached Figure 1 The flow chart is used to control the intelligent conference room. The specific control method is:

[0044] S1. Matching of host device and UWB tag device:

[0045] The host device in this embodiment includes a UWB access control identification device, an access control output device, a space scene controller and a space scene control output device, and an attendance data output and storage device;

[0046] The host device sends a UWB signal for broadcast detection to determine whether there is a UWB tag device in the area. When the host device receives a reply from the UWB tag device, the host performs handshake authentication and information exchange with the UWB tag device that sent the reply. When the handshake authentication information is confirmed to be correct, proceed to step S2, otherwise return to step S1;

[0047] In this embodiment, the UWB tag device is carried by the conference participants as identity authentication information, and may be a card storing identity information, conference information, and the like, or a mobile phone of the conference participant.

[0048] S2. Analysis of UWB tag device path information and judgment of attendance:

[0049] S2-1. UWB tag device path information analysis: The host device uses UWB path information analysis to determine whether the person carrying the tag device in the area is about to enter or leave the conference room:

[0050] If the judgment result is yes, then go to step S2-2, otherwise return to step S1;

[0051] Among them, the UWB tag device path information needs to rely on two UWB base stations that are fixedly installed in the monitoring area and can transmit and receive UWB signals. The host device communicates with the above two UWB base stations and has obtained the relative positions of the two UWB base stations. The analysis process is shown in the attached Figure 2 , the specific steps are:

[0052] S201, the host device detects a UWB tag device in the area;

[0053] S202, real-time data collection: The UWB base station exchanges data with the UWB tag device, and the data content includes information such as tag position, angle, and device number;

[0054] S203, positioning calculation:

[0055] After the two UWB base stations receive the tag's signal respectively, they calculate the distance or angle between the UWB tag device and the tag device according to the time difference or arrival angle of the signal, and determine the location of the person carrying the tag device. The specific process is: detect once every 20ms, and calculate the two-dimensional position of the tag by comparing and analyzing the distance between the UWB tag and the two base stations to determine whether the person carrying the tag device is outside or inside the conference room;

[0056] S204, data fusion and filtering:

[0057] The raw data of the position measurement of the same UWB tag device by two UWB base stations are collected, and the raw data are processed using a data fusion algorithm; for the raw data that may have errors, an error threshold of the calculated distance or angle result is set, and the raw data exceeding the error threshold is eliminated or the raw data is compensated by increasing or decreasing the value to obtain a more accurate instantaneous position;

[0058] In the data processing process, it is also necessary to consider the motion characteristics of the object's acceleration and direction changes and perform dynamic compensation to optimize trajectory prediction;

[0059] S205, trajectory tracking and analysis: connecting continuous position data points to form the moving trajectory of the object and analyzing the trajectory data to extract motion features such as speed, acceleration, and dwell time;

[0060] S206, monitoring and prediction output: real-time monitoring of the tag movement trajectory, and prediction of the movement direction of the person carrying the tag device.

[0061] S2-2. The host device confirms and determines whether the person is a participant through the identity information of the person carried by the tag device:

[0062] If the judgment result is yes, proceed to step S3, otherwise return to step S1;

[0063] S3, the host sends a command to the access control system to execute access control authority confirmation and unlocking action, allowing the person with the tag device to enter or leave the conference room, and records the execution time and personnel information. At the same time, it determines whether the person with the tag device entering is the first person to enter the conference room, and whether the person with the tag device leaving is the last person to leave the conference room. If any of the judgment results is yes, then go to step S4, otherwise return to step S1;

[0064] Among them, for the person who enters, it is necessary to determine whether the person is the first person to enter the conference room. The specific process is as follows:

[0065] The host device continuously reads whether there is a UWB tag device in the conference room during this period, that is, whether there are corresponding participants in the conference room. If the judgment result is no, that is, there is no UWB tag device in the conference room during this period, then the judgment result is yes, that is, the person is the first person to enter the conference room, then enter step S4, otherwise return to the S1 process;

[0066] For the person who left, it is necessary to determine whether the person was the last person to leave the meeting room. The specific process is as follows:

[0067] The host device continuously reads the UWB tag devices in the conference room during the period and obtains the number of devices. If the number of UWB tag devices in the conference room is 0, it proves that there is no UWB tag device in the period. The judgment result is yes, that is, the person is the last person to leave the conference room, and enters step S4. Otherwise, the host returns to the S1 process;

[0068] S4. The host device issues a command to execute scene control output including lighting control, projection start or stop, air conditioning control and curtain control.

[0069] S5. Return to S1 process.

Claims

1. A smart conference room control method based on UWB technology, characterized in that: The control method needs to be implemented with the help of a host device and a UWB tag device carried by the participants. The host device includes a UWB access control identification device, an access control output device, a space scene controller and a space scene control output device, and an attendance data output and storage device. The specific steps include: S1. Matching of host device and UWB tag device; S2. Analysis of UWB tag device path information and judgment of attendance: S2-1. UWB tag device path information analysis: The host device uses UWB path information analysis to determine whether the person carrying the tag device in the area is about to enter or leave the conference room: If the judgment result is yes, then go to step S2-2, otherwise return to step S1; S2-2. The host device confirms the identity information of the person carried by the tag device and determines whether the person is a participant: If the judgment result is yes, proceed to step S3, otherwise return to step S1; S3. The host device sends a command to the access control system to allow the tag device to carry people to enter or leave, and records the execution time and personnel information. At the same time, it determines whether the person carrying the tag device entering is the first person to enter the conference room or whether the person carrying the tag device leaving is the last person to leave the conference room: If any of the judgment results is yes, then go to step S4, otherwise return to step S1; S4, execute scene control output; S5. Return to S1 process.

2. According to claim 1, a smart conference room control system device based on UWB technology is characterized in that: The UWB tag device path information analysis described in step S2 needs to be completed by relying on two UWB base stations that are fixedly installed in the monitoring area and can transmit and receive UWB signals. The host device communicates with the two UWB base stations and has obtained the relative positions of the two UWB base stations. The specific steps are: S201, the host device detects a UWB tag device in the area; S202, real-time data collection: the UWB base station exchanges data with the UWB tag device, and the data content includes the tag position, angle and device number information; S203, positioning calculation: After the two UWB base stations receive the tag's signal respectively, they calculate the distance or angle between the two UWB base stations and the UWB tag device based on the time difference or arrival angle difference of the signal, and determine the location of the person carrying the tag device: S204, data fusion and filtering: Collecting raw data of the position measurement of the same UWB tag device by two UWB base stations, and processing the raw data using a data fusion algorithm; S205, trajectory tracking and analysis: generating tag movement trajectory and analyzing trajectory data to extract motion features; S206, monitoring and prediction output: real-time monitoring of the tag movement trajectory, and prediction of the movement direction of the person carrying the tag device.

3. The intelligent conference room control system device based on UWB technology according to claim 2 is characterized in that: The positioning calculation is specifically as follows: the UWB tag device is detected every 20ms, the distance between the UWB tag and two UWB base stations is compared and analyzed, the two-dimensional position of the tag is calculated, and the position of the person carrying the tag device is determined to be outside or inside the conference room.

4. The intelligent conference room control system device based on UWB technology according to claim 2 is characterized in that: The raw data to be processed is: Set the error threshold of the calculated distance or angle result, remove the original data that exceeds the error threshold or increase or decrease the value of the original data for compensation. During the data processing, the motion characteristics of the object's acceleration and direction change need to be considered for dynamic compensation.

5. The intelligent conference room control system device based on UWB technology according to claim 2 is characterized in that: The method for generating the tag movement trajectory is to connect continuous position data points to form the tag movement trajectory.

6. The intelligent conference room control system device based on UWB technology according to claim 2 is characterized in that: The motion characteristics include speed, acceleration and dwell time.

7. The intelligent conference room control system device based on UWB technology according to claim 1 is characterized in that: In step S3, the specific method for judging whether the person carrying the tag device entering is the first person to enter the conference room is as follows: the host device continuously reads whether there is a UWB tag device in the conference room. If not, the judgment result is yes.

8. The intelligent conference room control system device based on UWB technology according to claim 1 is characterized in that: In step S3, the specific method for judging whether the person carrying the tag device who leaves is the last person to leave the conference room is as follows: The host device continuously reads the UWB tag devices in the conference room and obtains the number of devices. If the number of devices is 0, the judgment result is yes.

9. The intelligent conference room control system device based on UWB technology according to claim 1, characterized in that: In step S3, the host device sends a command to the access control system to execute access control authority confirmation and unlocking action.

10. The intelligent conference room control system device based on UWB technology according to claim 1, characterized in that: In step S4, the host device executes scene control output, and the control output includes lighting control, projection start or stop, air conditioning control and curtain control.

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