Central control system of digital multimedia exhibition hall

Abstract

The invention belongs to the technical field of multimedia central control, and discloses a central control system of a digital multimedia exhibition hall. Collecting an environment data set, wherein the environment data set comprises temperature data, humidity data and illumination data; monitoring and controlling various modules in the digital multimedia exhibition hall; analyzing the feedback data set to obtain a system evaluation value; processing the environment data set to obtain an environment evaluation result; the environment data set is analyzed in combination with the exhibition point distribution data to obtain an experience upgrading report, and the experience upgrading report comprises a reduction report, a normal report and an enhancement report; the system evaluation value and the environment evaluation result are processed respectively, a system test result and a comfort evaluation result are obtained, and generally, the method has the remarkable advantages of high audience evaluation accuracy, high exhibition hall system test capability and great exhibition hall data effect.

Description

Technical Field

[0001] The present invention relates to the technical field of multimedia central control, and more specifically, to a central control system of a digital multimedia exhibition hall. Background Art

[0002] Digital exhibition halls are also called digital exhibition halls, multimedia digital exhibition halls, etc. They use multimedia and digital technology as display technology, use the latest film and television animation technology, combine unique graphic digital and multimedia technology, use various novel technologies to attract visitors, and realize human-computer interaction. With the rapid development of my country's economy, based on the needs of enterprises, education, media and other aspects, digital multimedia exhibition halls have become an important carrier of current publicity and display. Compared with traditional display methods, digital multimedia exhibition halls have replaced traditional display methods to a great extent with their advantages of strong functionality, high selectivity of communication methods and strong interactivity. As an extremely important central control system in digital multimedia exhibition halls, it not only provides users with a variety of conveniences, but also greatly enhances users' control over exhibits. However, in the use of the central control system, in order to better monitor the exhibition hall environment, enhance the audience's exhibition experience and test the exhibition hall's display effect, it still requires a lot of manpower and material resources to do relevant evaluations.

[0003] The patent application with publication number CN11797023B discloses a central control system for a digital multimedia exhibition hall. Through the overall monitoring and control of each module by the central control module, the centralized management of the digital multimedia exhibition hall is realized, and the overall efficiency and operational stability of the system are improved. The multimedia display module displays digital media content through virtual reality technology and augmented reality technology, providing visitors with a stronger immersive and interactive experience, enhancing the attractiveness and fun of the exhibition. The data analysis module analyzes the perception data through machine learning algorithms to achieve intelligent understanding of various situations in the exhibition hall. Based on the analysis results, the system can automatically adjust the display content or recommend improvement strategies to improve the personalization and participation of the digital exhibition hall.

[0004] However, although the central control system of the above-mentioned digital multimedia exhibition hall has improved the personalization of the digital exhibition hall and the audience's participation to a certain extent by adding and upgrading multiple components to the central control module, in the process of using the multimedia exhibition hall, how to enable users to quickly control the environmental status in the exhibition hall and the audience's evaluation of the exhibition hall display effect through the central control system is extremely important. Traditional manual evaluation or expert evaluation not only requires a lot of manpower, material resources and time costs, but also the final evaluation results are different from the audience's on-site experience. In addition, because the existing multimedia exhibition halls mostly use the overall environment as a benchmark for environmental parameter adjustment, it is difficult to customize personalized services for exhibition points with a relatively concentrated number of people. This makes it very easy for the audience to be dissatisfied with the exhibition hall environment when there are too many people at an exhibition point.

[0005] In view of this, the present invention proposes a central control system for a digital multimedia exhibition hall to solve the above problems. Summary of the invention

[0006] In order to overcome the above-mentioned defects of the prior art and to achieve the above-mentioned purpose, the present invention provides the following technical solutions: comprising: An environmental data collection module is used to collect environmental data sets, including temperature data, humidity data and light data; Feedback data collection module, used to collect feedback data sets, which include personnel data, interaction times data, interaction duration data and satisfaction data; Multimedia central control module, used to monitor and control various modules in the digital multimedia exhibition hall; A database module is used to store environmental data sets, feedback data sets, exhibition point location distribution data, visitor number standard data, system reference values ​​and historical system reference values; A system evaluation value generation module is used to analyze the feedback data set to obtain a system evaluation value; The system monitoring module is used to process the environmental data set to obtain environmental assessment results.

[0007] Furthermore, the feedback data set is analyzed in the following ways: Step 1: By substituting into the calculation formula: Get the system reference value, where For the number of interactions, For interaction duration data, For satisfaction data, For personnel data, , and are the corresponding weight factors respectively; Step 2: Collection The historical system reference value is used as the sample set, and the sample set is divided into 70% training set, 15% The test set and 15% Validation set; Step 3: Establish a system classification model based on the sample set, obtain historical feature vectors in the training set, and randomly select The historical feature vectors are used as the original cluster center points, and the historical feature vectors that are not used as the original cluster center points are marked as calculation points, and the calculation points are marked in ascending order. , ,... ,and ; Step 4: Substitute the formula into the formula: Get the distance between data items and assign the calculated points to the nearest original cluster points to get new data clusters as initial clustering points, where For the Calculation points The distance to the initial cluster center point, is the location of the initial cluster center, is the matrix transpose, is the inverse matrix of the covariance matrix; Step 5: Order , and jump to step 4; Step 6: Repeat steps 4 to 5 until When the end, and The calculation points are assigned to the corresponding data clusters to obtain the satisfaction evaluation model; Step 7: Input the system reference value into the satisfaction evaluation model, and output the system evaluation value; The system monitoring module is used to process the environmental data set and obtain the environmental assessment results; Furthermore, the steps of processing the environmental data set include: Q1: Based on the OTSU algorithm, insert and update the segmentation threshold, and make the updated segmentation threshold reach the preset number of iterations to create an environmental data classification model; Q2: Traverse the temperature data, humidity data and light data, and regard the values ​​of temperature data, humidity data and light data as sets of different gray levels respectively; Q3: Input temperature data to determine the initial threshold value P1. At this time, the data is divided into Pa type data less than or equal to P1 and Pb+Pc type data greater than P1; Q4: Input the Pb+Pc data into the environmental data classification model again to obtain the initial threshold value P2, that is, the Pb+Pc data is divided into Pb data less than or equal to P2 and Pc data greater than P2; Q5: Input humidity data and light data, repeat Q3 to Q4, assign corresponding values, and output the second temperature data, the second humidity data or the second light data; Q7: Pack the second temperature data, the second humidity data and the second light data to obtain an environmental assessment result; Q8: The calculation formula for updating the segmentation threshold is: ,in is the preset number of iterations, is the foreground mean, is the background mean; The user experience upgrade module is used to analyze the environmental data set in combination with the exhibition point distribution data to obtain an experience upgrade report, which includes a reduction report, a normal report and an enhanced report.

[0008] Furthermore, the methods of combining the exhibition point distribution data include: Obtain the distribution data of exhibition points, and mark them as Y1, Y2, Y3...Yn based on the exhibit categories; Through the camera device in the multimedia central control module, based on the distribution data of the exhibition points, the number of people within the exhibition point range is collected, marked as Y1-1, Y1-2, Y1-3...Yn-m, and the audience data set is obtained; Further, the environmental data set is analyzed in the following ways: Obtain temperature data, humidity data, light data, standard data on the number of visitors, and a data set of visitors; mark the data on the number of visitors as p; When m>p in the visitor data set, an enhancement report at Yn is generated, which includes instructions for improving light data, reducing temperature data, and reducing humidity data; When m=p in the visitor data set, a normal report at Yn is generated. The normal report includes that the light data, temperature data and humidity data are not adjusted; When m<p in the audience data set, a reduction report at Yn is generated, which includes reducing the illumination data, reducing the power consumption of the air conditioning equipment, and reducing the power consumption of the humidity control equipment; The system feedback module is used to process the system evaluation value and the environmental evaluation result respectively to obtain the system test result and the comfort evaluation result.

[0009] Furthermore, the method of processing the system evaluation value includes: By substituting into the calculation formula: Get the system evaluation threshold, where It is the standard capacity under the conditions of maximum capacity and maximum on-site flow of people. The maximum number of people that can be accommodated is is the pressure coefficient, is the acceleration factor; Calculate the pressure coefficient. The specific calculation process is: ,in is the pressure value of the maximum number of people and the maximum flow of people in the venue. is the actual flow of people in the venue. It is the maximum flow of people in the venue under the condition of maximum capacity; When the system evaluation value is less than When the system evaluation value is greater than or equal to Less than or equal to When the system evaluation value is greater than When a good message is sent to the receiving end through the communication unit; The warning message includes a statement that the equipment in the multimedia exhibition hall is not operating well, and requires staff to consider suspending the use of the exhibition hall, conducting a comprehensive inspection of the hardware equipment in the exhibition hall, and contacting the maintenance team for on-site repairs; The alarm message includes a description of the poor performance of the current multimedia exhibition hall equipment, requiring staff to check the equipment software update status, check the hardware equipment in the exhibition hall, and collect visitors' suggestions for improvement of the exhibition hall; Good SMS includes explaining that the current multimedia exhibition hall equipment is running well, reminding staff to regularly maintain the hardware equipment in the exhibition hall, regularly back up important data in the central control system, and continuously optimize the central control system; Pack warning SMS, alarm SMS and good SMS to get system test results.

[0010] Furthermore, the methods for processing the environmental assessment results include: By substituting into the calculation formula: Get the environmental assessment value, where is the second temperature data, The second is humidity data, is the second illumination data, , and are the corresponding weight factors respectively; When the environmental assessment value is less than When the environmental assessment value is greater than or equal to Less than or equal to When the environmental assessment value is greater than When , a higher signal is output; The lower signal contains a group of fields representing that the environmental parameters in the exhibition hall are generally low, the good signal contains a group of fields representing that the environmental parameters in the exhibition hall are generally good, and the higher signal contains a group of fields representing that the environmental parameters in the exhibition hall are generally high; Pack low signal, good signal and high signal to get a comfortable assessment result.

[0011] Further, S1: collecting an environmental data set, the environmental data set includes temperature data, humidity data and light data; S2: Collect feedback data sets, which include personnel data, interaction times data, interaction duration data, and satisfaction data; S3: Monitor and control various modules in the digital multimedia exhibition hall; S4: storage environment data set, feedback data set, exhibition point location distribution data, visitor number standard data, system reference value and historical system reference value; S5: Analyze the feedback data set to obtain the system evaluation value; S6: Process the environmental data set to obtain environmental assessment results; S7: Analyze the environmental data set in combination with the exhibition point distribution data to obtain an experience upgrade report, which includes a reduction report, a normal report, and an enhancement report; S8: Process the system evaluation value and the environmental evaluation result respectively to obtain the system test result and the comfort evaluation result.

[0012] The technical effects and advantages of the central control system of a digital multimedia exhibition hall of the present invention are as follows: The present invention analyzes the feedback data set to obtain a system evaluation value, which can effectively and accurately feedback the audience's evaluation of the on-site display effect of the exhibition hall, greatly reducing the time and labor cost of the expert evaluation. By processing the environmental data set, the environmental evaluation result obtained can assist the user to quickly understand the environmental state and comfort status in the multimedia exhibition hall, greatly reducing the poor experience comfort of the audience caused by the poor environment in the multimedia exhibition hall. By analyzing the environmental data set in combination with the exhibition point distribution data, the experience upgrade report obtained can adjust the environmental parameters to different degrees according to the different number of visitors between different exhibition points, greatly reducing the poor physical sensation caused by the increase in temperature, increase in humidity and insufficient lighting conditions due to the large number of people at the exhibition point. By processing the system evaluation value and the environmental evaluation result respectively, the system test results and comfort evaluation results obtained can not only intuitively present the display effect and environmental state of the multimedia exhibition hall to the user, but also can be retained as important comparison data, which is convenient for the detailed comparison of relevant parameters in the subsequent exhibition hall. In general, the present invention has the significant advantages of high audience evaluation accuracy, strong exhibition hall system testing capability and large exhibition hall data effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic diagram of a central control system of a digital multimedia exhibition hall of the present invention; Figure 2 The figure is a schematic diagram of a central control method for a digital multimedia exhibition hall according to the present invention. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0015] Example 1

[0016] See also Figure 1 As shown, the central control system of a digital multimedia exhibition hall described in this embodiment includes: An environmental data collection module is used to collect environmental data sets, including temperature data, humidity data and light data; It should be explained that by installing a temperature and humidity sensor, the temperature value and humidity value in the specified area are collected respectively to obtain temperature data and humidity data; by installing a light intensity sensor, the light value in the specified area is collected to obtain light data; Feedback data collection module, used to collect feedback data sets, which include personnel data, interaction times data, interaction duration data and satisfaction data; It should be explained that the number of people entering the designated area is collected through manual input to obtain personnel data; the total number of interactions and total interaction duration are collected through docking with the backend data management platform to obtain interaction number data and interaction duration data; the total evaluation scores of the people entering the venue are collected through test scoring to obtain satisfaction data; It should be explained that the test scores are divided into three categories: unsatisfactory, average, and satisfactory, corresponding to integers of 1, 2, and 3, respectively. The total evaluation score is the sum of the evaluation scores of all entrants; Multimedia central control module, used to monitor and control various modules in the digital multimedia exhibition hall; It should be explained that the multimedia central control module can realize the unified centralized control and management of all kinds of equipment in the exhibition hall, including but not limited to air conditioners, humidity control equipment, lighting equipment, projectors, LED display screens and cameras; the multimedia central control module supports multiple display forms, including but not limited to video, audio, text and images; based on network connection, staff can remotely access the central control module through terminal devices such as mobile phones, tablets or computers, and control and view the operating status of equipment in the multimedia exhibition hall; A database module is used to store environmental data sets, feedback data sets, exhibition point location distribution data, visitor number standard data, system reference values ​​and historical system reference values; It should be explained that the exhibition point distribution data is the location information of different exhibition points in the multimedia exhibition hall; the standard data set of the number of visitors is the maximum number of people at a fixed exhibition point obtained based on the initial environmental data set. The initial environmental data set is the temperature data, humidity data and light data under the optimal condition of personal body sensation. The initial environmental data set is obtained through manual input; A system evaluation value generation module is used to analyze the feedback data set to obtain a system evaluation value; Further, the feedback data set is analyzed in the following ways: Step 1: By substituting into the calculation formula: Get the system reference value, where For the number of interactions, For interaction duration data, For satisfaction data, For personnel data, , and are the corresponding weight factors respectively; Step 2: Collection The historical system reference value is used as the sample set, and the sample set is divided into 70% training set, 15% The test set and 15% Validation set; Step 3: Establish a system classification model based on the sample set, obtain historical feature vectors in the training set, and randomly select The historical feature vectors are used as the original cluster center points, and the historical feature vectors that are not used as the original cluster center points are marked as calculation points, and the calculation points are marked in ascending order. , ,... ,and ; Step 4: Substitute the formula into the formula: Get the distance between data items and assign the calculated points to the nearest original cluster points to get new data clusters as initial clustering points, where For the Calculation points The distance to the initial cluster center point, is the location of the initial cluster center, is the matrix transpose, is the inverse matrix of the covariance matrix; It should be explained that the covariance matrix is ​​a The matrix is ​​used to reflect the correlation and variance between data variables; matrix transposition refers to exchanging the rows and columns of the matrix, that is, changing the elements of the Da row and the D1 column of the original matrix to the elements of the D1 row and the Da column of the new matrix; the inverse matrix means that if F1 is an N-order square matrix, if there exists an N-order square matrix F2 such that F1F2=F2F1=E, and E is an N-order unit matrix, then F2 is an inverse matrix of F1, and F1 and F2 are inverse matrices of each other; Step 5: Order , and jump to step 4; Step 6: Repeat steps 4 to 5 until When the end, and The calculation points are assigned to the corresponding data clusters to obtain the satisfaction evaluation model; Step 7: Input the system reference value into the satisfaction evaluation model, and output the system evaluation value; The system monitoring module is used to process the environmental data set and obtain the environmental assessment results; Furthermore, the steps of processing the environmental data set include: Q1: Based on the OTSU algorithm, insert and update the segmentation threshold, and make the updated segmentation threshold reach the preset number of iterations to create an environmental data classification model; Q2: Traverse the temperature data, humidity data and light data, and regard the values ​​of temperature data, humidity data and light data as sets of different gray levels respectively; Q3: Input temperature data to determine the initial threshold value P1. At this time, the data is divided into Pa type data less than or equal to P1 and Pb+Pc type data greater than P1; Q4: Input the Pb+Pc data into the environmental data classification model again to obtain the initial threshold value P2, that is, the Pb+Pc data is divided into Pb data less than or equal to P2 and Pc data greater than P2; Q5: Input humidity data and light data, repeat Q3 to Q4, assign corresponding values, and output the second temperature data, the second humidity data or the second light data; It should be explained that assigning corresponding values ​​refers to, for example, integers 1, 2, and 3; Q7: Pack the second temperature data, the second humidity data and the second light data to obtain an environmental assessment result; Q8: The calculation formula for updating the segmentation threshold is: ,in is the preset number of iterations, is the foreground mean, is the background mean; It should be explained that the foreground mean refers to the grayscale value of the temperature data, humidity data and illumination data at the coordinates multiplied by the indicator function and divided by the number of foreground pixels, and the background mean refers to the grayscale value of the temperature data, humidity data and illumination data at the coordinates multiplied by the indicator function and divided by the number of background pixels; The user experience upgrade module is used to analyze the environmental data set in combination with the exhibition point distribution data to obtain an experience upgrade report, which includes a reduction report, a normal report, and an enhanced report; Further, the methods of combining the exhibition point distribution data include: Obtain the distribution data of exhibition points, and mark them as Y1, Y2, Y3...Yn based on the exhibit categories; It should be explained that the exhibit categories are the attributes of the displayed goods, such as home furnishings, technology, and textiles; Through the camera device in the multimedia central control module, based on the distribution data of the exhibition points, the number of people within the exhibition point range is collected, marked as Y1-1, Y1-2, Y1-3...Yn-m, and the audience data set is obtained; Further, the methods for analyzing the environmental data set include: Obtain temperature data, humidity data, light data, standard data on the number of visitors, and a data set of visitors; mark the data on the number of visitors as p; When m>p in the visitor data set, an enhancement report at Yn is generated, which includes instructions for improving light data, reducing temperature data, and reducing humidity data; When m=p in the visitor data set, a normal report at Yn is generated. The normal report includes that the light data, temperature data and humidity data are not adjusted; When m<p in the audience data set, a reduction report at Yn is generated, which includes reducing the illumination data, reducing the power consumption of the air conditioning equipment, and reducing the power consumption of the humidity control equipment; The system feedback module is used to process the system evaluation value and the environmental evaluation result respectively to obtain the system test result and the comfort evaluation result; Further, the method of processing the system evaluation value includes: By substituting into the calculation formula: Get the system evaluation threshold, where It is the standard capacity under the conditions of maximum capacity and maximum on-site flow of people. The maximum number of people that can be accommodated is is the pressure coefficient, is the acceleration factor; Calculate the pressure coefficient. The specific calculation process is: ,in is the pressure value of the maximum number of people and the maximum flow of people in the venue. is the actual flow of people in the venue. It is the maximum flow of people in the venue under the condition of maximum capacity; When the system evaluation value is less than When the system evaluation value is greater than or equal to Less than or equal to When the system evaluation value is greater than When a good message is sent to the receiving end through the communication unit; The warning message includes a statement that the equipment in the multimedia exhibition hall is not operating well, and requires staff to consider suspending the use of the exhibition hall, conducting a comprehensive inspection of the hardware equipment in the exhibition hall, and contacting the maintenance team for on-site repairs; The alarm message includes a description of the poor performance of the current multimedia exhibition hall equipment, requiring staff to check the equipment software update status, check the hardware equipment in the exhibition hall, and collect visitors' suggestions for improvement of the exhibition hall; Good SMS includes explaining that the current multimedia exhibition hall equipment is running well, reminding staff to regularly maintain the hardware equipment in the exhibition hall, regularly back up important data in the central control system, and continuously optimize the central control system; Pack warning SMS, alarm SMS and good SMS to get system test results; Furthermore, the methods for handling the environmental assessment results include: By substituting into the calculation formula: Get the environmental assessment value, where is the second temperature data, The second is humidity data, is the second illumination data, , and are the corresponding weight factors respectively; When the environmental assessment value is less than When the environmental assessment value is greater than or equal to Less than or equal to When the environmental assessment value is greater than When , a higher signal is output; The lower signal contains a group of fields representing that the environmental parameters in the exhibition hall are generally low, the good signal contains a group of fields representing that the environmental parameters in the exhibition hall are generally good, and the higher signal contains a group of fields representing that the environmental parameters in the exhibition hall are generally high; Packing lower signals, good signals and higher signals to get a comfort assessment result; The beneficial effects of this embodiment are as follows: by analyzing the feedback data set, the system evaluation value obtained can effectively and accurately feedback the audience's evaluation of the on-site display effect of the exhibition hall, which greatly reduces the time and labor cost of the expert evaluation; by processing the environmental data set, the environmental evaluation result obtained can assist the user to quickly understand the environmental state and comfort status in the multimedia exhibition hall, which greatly reduces the poor experience and comfort of the audience caused by the poor environment in the multimedia exhibition hall; by analyzing the environmental data set in combination with the exhibition point distribution data, the experience upgrade report obtained can adjust the environmental parameters to different degrees according to the different number of visitors between different exhibition points, which greatly reduces the poor physical sensation caused by the increase in temperature, increase in humidity and insufficient lighting conditions due to the large number of people at the exhibition point; by processing the system evaluation value and the environmental evaluation result respectively, the system test results and comfort evaluation results obtained can not only intuitively present the display effect and environmental state of the multimedia exhibition hall to the user, but also can be retained as important comparison data, which is convenient for the detailed comparison of relevant parameters in the subsequent exhibition hall; in general, the present invention has the significant advantages of high accuracy of audience evaluation, strong exhibition hall system testing capability and large exhibition hall data effect.

[0017] Example 2

[0018] See also Figure 2As shown, the part not described in detail in this embodiment is described in Example 1, and a method for detecting abnormalities in an electric power Internet of Things is provided, including: S1: collecting an environmental data set, the environmental data set including temperature data, humidity data and light data; S2: Collect feedback data sets, which include personnel data, interaction times data, interaction duration data, and satisfaction data; S3: Monitor and control various modules in the digital multimedia exhibition hall; S4: storage environment data set, feedback data set, exhibition point location distribution data, visitor number standard data, system reference value and historical system reference value; S5: Analyze the feedback data set to obtain the system evaluation value; S6: Process the environmental data set to obtain environmental assessment results; S7: Analyze the environmental data set in combination with the exhibition point distribution data to obtain an experience upgrade report, which includes a reduction report, a normal report, and an enhancement report; S8: Process the system evaluation value and the environmental evaluation result respectively to obtain the system test result and the comfort evaluation result.

[0019] Example 3

[0020] This embodiment discloses an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the operation mode of the above-mentioned power Internet of Things anomaly detection method is implemented.

[0021] Since the electronic device introduced in this embodiment is an electronic device used to implement a method for detecting anomalies in an electric power Internet of Things in the embodiment of this application, based on the method for detecting anomalies in an electric power Internet of Things introduced in the embodiment of this application, a person skilled in the art can understand the specific implementation of the electronic device of this embodiment and its various variations, so how the electronic device implements the method in the embodiment of this application is not described in detail here. As long as a person skilled in the art implements an electronic device used in a method for detecting anomalies in an electric power Internet of Things in the embodiment of this application, it belongs to the scope of protection of this application.

[0022] The above formulas are all dimensionless and numerical calculations. The formula is a formula for the most recent real situation obtained by collecting a large amount of data and performing software simulation. The preset parameters and thresholds in the formula are set by technicians in this field according to actual conditions.

[0023] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technical users in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A central control system for a digital multimedia exhibition hall, characterized in that: include: An environmental data collection module is used to collect environmental data sets, including temperature data, humidity data and light data; Feedback data collection module, used to collect feedback data sets, which include personnel data, interaction times data, interaction duration data and satisfaction data; Multimedia central control module, used to monitor and control various modules in the digital multimedia exhibition hall; A database module is used to store environmental data sets, feedback data sets, exhibition point location distribution data, visitor number standard data, system reference values ​​and historical system reference values; A system evaluation value generation module is used to analyze the feedback data set to obtain a system evaluation value; The system monitoring module is used to process the environmental data set and obtain the environmental assessment results; The user experience upgrade module is used to analyze the environmental data set in combination with the exhibition point distribution data to obtain an experience upgrade report, which includes a reduction report, a normal report, and an enhanced report; The system feedback module is used to process the system evaluation value and the environmental evaluation result respectively to obtain the system test result and the comfort evaluation result.

2. The central control system of a digital multimedia exhibition hall according to claim 1, characterized in that: The steps to analyze the feedback dataset include: Step 1: Substitute the formula into: Get the system reference value, where For the number of interactions, For interaction duration data, For satisfaction data, For personnel data, , and are the corresponding weight factors respectively; Step 2: Collection The historical system reference value is used as the sample set, and the sample set is divided into 70% training set, 15% The test set and 15% Validation set; Step 3: Establish a system classification model based on the sample set, obtain historical feature vectors in the training set, and randomly select The historical feature vectors are used as the original cluster center points, and the historical feature vectors that are not used as the original cluster center points are marked as calculation points, and the calculation points are marked in ascending order. , ,... ,and ; Step 4: Substitute into the calculation formula: Get the distance between data items and assign the calculated points to the nearest original cluster points to get new data clusters as initial clustering points, where For the Calculation points The distance to the initial cluster center point, is the location of the initial cluster center, is the matrix transpose, is the inverse matrix of the covariance matrix; Step 5: Order , and jump to step 4; Step 6: Repeat steps 4 to 5 until When the end, and The calculation points are assigned to the corresponding data clusters to obtain the satisfaction evaluation model; Step 7: Input the system reference value into the satisfaction evaluation model and output the system evaluation value.

3. The central control system of a digital multimedia exhibition hall according to claim 2 is characterized in that: The steps to process the environmental dataset include: Q1: Based on the OTSU algorithm, insert and update the segmentation threshold, and make the updated segmentation threshold reach the preset number of iterations to create an environmental data classification model; Q2: Traverse the temperature data, humidity data and light data, and regard the values ​​of temperature data, humidity data and light data as sets of different gray levels respectively; Q3: Input temperature data to determine the initial threshold value P1. At this time, the data is divided into Pa type data less than or equal to P1 and Pb+Pc type data greater than P1; Q4: Input the Pb+Pc data into the environmental data classification model again to obtain the initial threshold value P2, that is, the Pb+Pc data is divided into Pb data less than or equal to P2 and Pc data greater than P2; Q5: Input humidity data and light data, repeat Q3 to Q4, assign corresponding values, and output the second temperature data, the second humidity data or the second light data; Q7: Pack the second temperature data, the second humidity data and the second light data to obtain an environmental assessment result; Q8: The calculation formula for updating the segmentation threshold is: ,in is the preset number of iterations, is the foreground mean, is the background mean.

4. The central control system of a digital multimedia exhibition hall according to claim 3 is characterized in that: Ways to combine exhibition point distribution data include: Obtain the distribution data of exhibition points, and mark them as Y1, Y2, Y3...Yn based on the exhibit categories; Through the camera equipment in the multimedia central control module, based on the exhibition point distribution data, the number of people within the exhibition point range is collected, marked as Y1-1, Y1-2, Y1-3...Yn-m, and the audience data set is obtained.

5. The central control system of a digital multimedia exhibition hall according to claim 4 is characterized in that: Methods for analyzing environmental datasets include: Obtain temperature data, humidity data, light data, standard data on the number of visitors, and a data set of visitors; mark the data on the number of visitors as p; When m>p in the visitor data set, an enhancement report at Yn is generated, which includes instructions for improving light data, reducing temperature data, and reducing humidity data; When m=p in the visitor data set, a normal report at Yn is generated. The normal report includes that the light data, temperature data and humidity data are not adjusted; When m<p in the audience data set, a reduction report at Yn is generated, and the reduction report includes reducing the illumination data, reducing the power consumption of the air-conditioning equipment, and reducing the power consumption of the humidity regulating equipment.

6. The central control system of a digital multimedia exhibition hall according to claim 5, characterized in that: The methods for processing system evaluation values ​​include: By substituting into the calculation formula: Get the system evaluation threshold, where It is the standard capacity under the conditions of maximum capacity and maximum on-site flow of people. The maximum number of people that can be accommodated is is the pressure coefficient, is the acceleration factor; Calculate the pressure coefficient. The specific calculation process is: ,in is the pressure value of the maximum number of people and the maximum flow of people in the venue. is the actual flow of people in the venue. It is the maximum flow of people in the venue under the condition of maximum capacity; When the system evaluation value is less than When the system evaluation value is greater than or equal to Less than or equal to When the system evaluation value is greater than When a good message is sent to the receiving end through the communication unit; The warning message includes a statement that the equipment in the multimedia exhibition hall is not operating well, and requires staff to consider suspending the use of the exhibition hall, conducting a comprehensive inspection of the hardware equipment in the exhibition hall, and contacting the maintenance team for on-site repairs; The alarm message includes a description of the poor performance of the current multimedia exhibition hall equipment, requiring staff to check the equipment software update status, check the hardware equipment in the exhibition hall, and collect visitors' suggestions for improvement of the exhibition hall; Good SMS includes explaining that the current multimedia exhibition hall equipment is running well, reminding staff to regularly maintain the hardware equipment in the exhibition hall, regularly back up important data in the central control system, and continuously optimize the central control system; Pack warning SMS, alarm SMS and good SMS to get system test results.

7. The central control system of a digital multimedia exhibition hall according to claim 6 is characterized in that: Ways to deal with environmental assessment results include: By substituting into the calculation formula: Get the environmental assessment value, where is the second temperature data, The second is humidity data, is the second illumination data, , and are the corresponding weight factors respectively; When the environmental assessment value is less than When the environmental assessment value is greater than or equal to Less than When the environmental assessment value is greater than When , a higher signal is output; The lower signal contains a group of fields representing that the environmental parameters in the exhibition hall are generally low, the good signal contains a group of fields representing that the environmental parameters in the exhibition hall are generally good, and the higher signal contains a group of fields representing that the environmental parameters in the exhibition hall are generally high; Pack low signal, good signal and high signal to get a comfortable assessment result.

8. A central control method for a digital multimedia exhibition hall, implemented according to the central control system for a digital multimedia exhibition hall according to any one of claims 1 to 7, characterized in that: The following steps are included: S1: Collect environmental data sets, which include temperature data, humidity data, and light data; S2: Collect feedback data sets, which include personnel data, interaction times data, interaction duration data, and satisfaction data; S3: Monitor and control various modules in the digital multimedia exhibition hall; S4: storage environment data set, feedback data set, exhibition point location distribution data, visitor number standard data, system reference value and historical system reference value; S5: Analyze the feedback data set to obtain the system evaluation value; S6: Process the environmental data set to obtain environmental assessment results; S7: Analyze the environmental data set in combination with the exhibition point distribution data to obtain an experience upgrade report, which includes a reduction report, a normal report, and an enhancement report; S8: Process the system evaluation value and the environmental evaluation result respectively to obtain the system test result and the comfort evaluation result.

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