Virtual reality simulation training-based foreign alarm on-site handling system

Abstract

The invention provides a virtual reality simulation training-based outside-related alarm on-site disposal system, which comprises a virtual scene construction unit, a data management and analysis unit, a course design module, a resource library and an evaluation analysis system, and is characterized in that a scene editing system is constructed in the virtual scene construction unit; a landform generator and a building and facility editor are arranged in the scene editing system, and an event trigger and a behavior editor are further arranged in the virtual scene construction unit. The data management and analysis unit is used for recording data such as operation behaviors, decision-making processes and interaction conditions with virtual roles of police officers in each training, various complex, extreme or rare police affair scenes can be easily simulated, students can fully exercise the ability to cope with dangerous situations under the risk-free condition, and the training efficiency is improved. The training performance of the trainee can be accurately evaluated, the trainee can timely know the training effect of the trainee, and the instructor can conveniently adjust the teaching strategy according to the condition of the trainee.

Description

Technical Field

[0001] The present invention relates to the field of virtual simulation technology, and in particular to a foreign-related police situation on-site handling system based on virtual reality simulation training. Background Art

[0002] The practical training course on on-site handling of foreign-related police incidents is a professional course designed to enhance the police officers’ ability to deal with foreign-related police incidents, including the definition and classification of foreign-related police incidents, such as criminal, civil, and public security cases involving foreigners; analysis of the characteristics of foreign-related police incidents, such as transnationality, complexity, and sensitivity; and exploration of the causes of foreign-related police incidents, such as increased international exchanges, cultural differences, and conflicts of interest. The course aims to cultivate trainees’ communication, adaptability, organizational coordination, and law enforcement capabilities at the scene of foreign-related police incidents, and enable trainees to skillfully use various police skills and tools, such as foreign language communication, foreign-related evidence collection, and on-site investigation techniques.

[0003] However, in some high-risk police training, such as drug control and bomb disposal, trainees may face real danger. At the same time, traditional police training requires a lot of manpower, material and financial resources, such as renting venues, purchasing equipment and props, arranging professional guidance, etc., and the subsequent maintenance costs are also high. The evaluation of traditional training courses often relies on manual observation and subjective judgment, which may have certain errors and incompleteness. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a foreign-related police situation on-site handling system based on virtual reality simulation training to solve the problems raised in the above-mentioned background technology. The present invention can easily simulate various complex, extreme or rare police scenes, allowing trainees to fully exercise their ability to deal with dangerous situations under risk-free conditions, and can also accurately evaluate the trainees' training performance.

[0005] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical solutions: a foreign-related police situation on-site handling system based on virtual reality simulation training, including a virtual scene construction unit, a data management and analysis unit, a course design module, a resource library and an evaluation and analysis system. A scene editing system is built in the virtual scene construction unit, and a terrain generator and a building and facility editor are provided in the scene editing system. The virtual scene construction unit also has a built-in event trigger and a behavior editor; the data management and analysis unit is used to record the police officers' operating behavior, decision-making process, interaction with virtual characters and other data in each training, so as to provide a basis for subsequent analysis and evaluation. The course design module includes a course scheduling system, which arranges the course sequence and progress based on different training objects and training stages. The resource library adopts a relational database to store resources in a structured manner, establish data tables and fields, and add metadata for each resource. The metadata includes resource name, type, source, creation time, and keywords.

[0006] Furthermore, the terrain generator is used to create various terrains, such as mountains, plains, hills, rivers, and lakes, and set the height, slope, and roughness parameters of the terrain in the scene editing system to build the required basic geographical environment; the facility editor is used to add various types of buildings, including residential buildings, office buildings, shopping malls, and hotels. By editing the appearance and internal structure of the building in the scene editing system, it supports the addition of roads, bridges, street lights, and traffic sign facilities.

[0007] Furthermore, the data management and analysis unit analyzes the training record data according to preset evaluation standards and algorithms, generates a detailed evaluation report, points out the strengths and weaknesses of police officers in training, and provides a reference for improving training.

[0008] Furthermore, the descriptive statistical analysis is performed based on the training record data to calculate the mean and standard deviation, wherein the mean is used to calculate the average performance of police officers on a certain indicator, such as average decision-making time and average operation accuracy, using the following formula:

[0009]

[0010] in is the mean, n is the number of data points, x i is the data point.

[0011] Furthermore, the standard deviation is used to measure the degree of dispersion of the data and reflect the stability of the performance of police officers. The formula is:

[0012]

[0013] Furthermore, the training record data is collected through an analysis unit, and the collected data includes walking routes, interactive actions with virtual characters, the timing and method of using police equipment and weapons; and records the time nodes and specific decision contents when police officers make decisions when facing different police situations, such as whether to choose to call for support and what negotiation strategy to adopt.

[0014] Furthermore, the system is also provided with physiological monitoring equipment, through which physiological data of police officers during training are collected, including heart rate, blood pressure, and skin electrical response, so as to evaluate their psychological stress and tension during the training process.

[0015] Furthermore, in the course design module, a hierarchical and progressive learning path is designed according to the different foundations and training stages of police officers. For novices, training starts with basic foreign-related police situations and simple tasks, and gradually increases the difficulty; for police officers with certain experience, the focus is on training in complex and special police situations and improving advanced skills.

[0016] Furthermore, the resource library utilizes knowledge graph technology to associate different types of resources, conduct quality assessment and screening on the collected resources, remove duplicate, erroneous or invalid resources, optimize and improve the content, and improve the quality and availability of resources; the resource library is integrated with other modules of the virtual reality simulation training system to provide a unified interface.

[0017] Furthermore, the evaluation and screening process includes credibility assessment and cluster analysis: weights are assigned to different sources, where resources from government agencies and well-known academic research institutions have higher weights, while sources such as personal blogs have lower weights, and the credibility of resources is evaluated through weighted calculation; similar resources are clustered into one category, and if a resource is significantly different from other resources in its category, it is judged to have quality problems; and the data points are divided into clusters through the K-Means algorithm, so that the similarity of data points in each cluster is higher and the similarity between different clusters is lower, and whether it is an abnormal resource is determined by calculating indicators such as the distance between the resource and the center of the cluster to which it belongs.

[0018] Beneficial effects of the present invention:

[0019] 1. The on-site handling system for foreign-related police situations based on virtual reality simulation training can easily simulate various complex, extreme or rare police scenarios, such as maintaining public order under major natural disasters. These scenarios are difficult to set up in actual training or have high risks, but can be freely constructed and reproduced in a virtual reality environment, which broadens the students' training vision and response capabilities. Students can be placed in a virtual dangerous environment for training, avoiding possible personal injuries in actual operations, and allowing students to fully exercise their ability to respond to dangerous situations under risk-free conditions.

[0020] 2. The on-site handling system for foreign-related police situations based on virtual reality simulation training only needs to build a virtual training platform and equip necessary virtual reality equipment. It can be used for a long time after one investment, and the subsequent maintenance cost is relatively low. It can save a lot of money and resources for police training. It can also simulate a large number of different types of police situation scenes in a short time, so that trainees can be exposed to more training content in a short time.

[0021] 3. The on-site handling system for foreign police situations based on virtual reality simulation training can record various data of trainees during the training process in real time, such as operation behavior, reaction time, decision-making process, etc. Through the analysis of these data, the training performance of trainees can be accurately evaluated; based on the real-time recorded data, the system can provide trainees with detailed feedback reports immediately after the training, pointing out the strengths and weaknesses of the trainees, and giving targeted improvement suggestions. Trainees can understand their training results in a timely manner and make targeted improvements and enhancements, which also makes it convenient for instructors to adjust teaching strategies according to the trainees' situations. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a principle block diagram of the on-site handling system for foreign-related police situations based on virtual reality simulation training of the present invention. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0024] See also Figure 1 The present invention provides the following technical solutions: a foreign-related police situation on-site handling system based on virtual reality simulation training, including a virtual scene construction unit, a data management and analysis unit, a course design module, a resource library and an evaluation and analysis system. The virtual scene construction unit is equipped with a scene editing system, and a terrain generator and a building and facility editor are provided in the scene editing system. The virtual scene construction unit is also equipped with an event trigger and a behavior editor; the data management and analysis unit is used to record the police officers' operation behavior, decision-making process, interaction with virtual characters and other data in each training, so as to provide a basis for subsequent analysis and evaluation. The course design module includes a course arrangement system, which arranges the course sequence and progress based on different training objects and training stages. The resource library adopts a relational database to store resources in a structured manner, establish data tables and fields, and add metadata for each resource. The metadata includes resource name, type, source, creation time, and keywords.

[0025] The above system can easily simulate various complex, extreme or rare police scenarios, such as maintaining public order under major natural disasters. These scenarios are difficult to set up or have high risks in actual training, but can be constructed and reproduced at will in a virtual reality environment, which broadens the trainees' training horizons and coping capabilities. Trainees can be placed in a virtual dangerous environment for training, avoiding personal injuries that may occur in actual operations, and allowing trainees to fully exercise their ability to deal with dangerous situations under risk-free conditions.

[0026] In this embodiment, the terrain generator is used to create various terrains, such as mountains, plains, hills, rivers, and lakes, and set the height, slope, and roughness parameters of the terrain in the scene editing system to build the required basic geographical environment; the facility editor is used to add various types of buildings, including residential buildings, office buildings, shopping malls, and hotels. By editing the appearance and internal structure of the building in the scene editing system, it supports the addition of roads, bridges, street lights, and traffic sign facilities.

[0027] Specifically, this embodiment provides a specific basic scene construction: in the basic scene construction module, the terrain generator uses the Perlin noise algorithm combined with satellite remote sensing data to generate terrains such as mountains, rivers, and plains. The building and facility editor can quickly build high-rise buildings, hotels, restaurants and other buildings with different styles, and can finely adjust the internal layout. Through the environment setting module, the weather system can simulate sunny, rainy, snowy, foggy and other weather conditions. The light and shadow controller accurately adjusts the light and shadow effects according to the time and geographical location to create different time atmospheres.

[0028] In this embodiment, the data management and analysis unit analyzes the training record data according to the preset evaluation criteria and algorithms, generates a detailed evaluation report, points out the advantages and disadvantages of the police officers in the training, and provides a reference for improving the training. The descriptive statistical analysis based on the training record data is performed to calculate the mean and standard deviation, where the mean is used to calculate the average performance of the police officers on a certain indicator, such as the average decision time and the average operation accuracy, using the following formula:

[0029]

[0030] in is the mean, n is the number of data points, x i is the data point.

[0031] In this embodiment, the standard deviation is used to measure the degree of dispersion of data and reflect the stability of the performance of police officers. The formula is:

[0032]

[0033] In this embodiment, the training record data is collected by the analysis unit, and the collected data includes walking routes, interactive actions with virtual characters, the timing and method of using police equipment and weapons; and records the time nodes and specific decision contents of police officers making decisions when facing different police situations, such as whether to choose to call for support and what negotiation strategy to adopt. The system is also equipped with physiological monitoring equipment, which collects physiological data of police officers during training, including heart rate, blood pressure, and skin galvanic response, to evaluate their psychological pressure and tension during training.

[0034] Specifically, in this embodiment, the BioPac MP150 multi-channel physiological recorder is used to record the trainees' electroencephalogram (EEG), electromyography (EMG), electrodermal conductivity (GSR), and respiratory rate (RSP) physiological indicators. A bracelet with a high-precision heart rate sensor is used to monitor the trainees' heart rate changes in real time and record heart rate data. At the same time, with the help of infrared cameras and image processing technology, the trainees' eye movement trajectory, gaze point, blinking frequency and other eye movement data are tracked to analyze the trainees' attention distribution and visual focus changes when facing different police scenarios.

[0035] In this embodiment, in the course design module, a hierarchical and progressive learning path is designed according to the different foundations and training stages of police officers. For novices, training starts with basic foreign-related police scenarios and simple tasks, and gradually increases the difficulty; for police officers with certain experience, the focus is on training in complex and special police scenarios and improving advanced skills. The resource library uses knowledge graph technology to associate different types of resources, conduct quality assessment and screening of collected resources, remove duplicate, erroneous or invalid resources, optimize and improve content, and improve the quality and availability of resources; the resource library is integrated with other modules of the virtual reality simulation training system to provide a unified interface.

[0036] In this embodiment, the evaluation and screening process includes credibility evaluation and cluster analysis: weights are assigned to different sources, where resources from government agencies and well-known academic research institutions have high weights, and sources such as personal blogs have low weights, and the credibility of resources is evaluated through weighted calculation; similar resources are clustered into one category, and if a resource is significantly different from other resources in its category, it is judged to have quality problems; and the data points are divided into clusters through the K-Means algorithm, so that the similarity of data points in each cluster is high, and the similarity between different clusters is low, and whether it is an abnormal resource is determined by calculating indicators such as the distance between the resource and the center of the cluster to which it belongs.

[0037] Specifically, the K-Means algorithm is used to cluster the newly collected police cases according to the event type (such as entry-exit disputes, foreign-related commercial conflicts, crimes committed by foreigners, etc.). In the "foreign-related commercial conflicts" cluster, most cases revolve around common problems such as contract breaches and intellectual property disputes. However, one case involves an extremely rare commercial conflict caused by transnational antique smuggling, and its handling method is very different from other cases in the cluster. By calculating the distance between the case and the cluster center, it is found that the distance is too large. It is preliminarily determined that the case may not belong to the typical "foreign-related commercial conflicts" category, or it needs to be specially marked for subsequent analysis.

[0038] The new cases were put into a small-scale trial training for police officers. After the training, the trainees' ratings and comments on the cases were collected. The results showed that the average score was 4.2 points (out of 5 points), and positive comments such as "the cases are very representative, the plot is reasonable, and it is very helpful to understand the handling of foreign-related police incidents" accounted for about 60%, and negative comments mainly focused on "some case details are not clear enough, which affects the understanding of the handling process", accounting for about 30%, and 10% of the comments were neutral.

[0039] The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention.

[0040] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A foreign-related police situation on-site handling system based on virtual reality simulation training, characterized by: It includes a virtual scene construction unit, a data management and analysis unit, a course design module, a resource library and an evaluation and analysis system. The virtual scene construction unit is equipped with a scene editing system, which is equipped with a terrain generator and a building and facility editor. The virtual scene construction unit also has a built-in event trigger and a behavior editor. The data management and analysis unit is used to record the police officers' operating behaviors, decision-making processes, interactions with virtual characters and other data in each training, so as to provide a basis for subsequent analysis and evaluation. The course design module includes a course scheduling system, which schedules the course sequence and progress based on different training objects and training stages. The resource library adopts a relational database to store resources in a structured manner, establish data tables and fields, and add metadata for each resource. The metadata includes resource name, type, source, creation time and keywords.

2. The on-site handling system for foreign-related police situations based on virtual reality simulation training according to claim 1 is characterized in that: The terrain generator is used to create various terrains, such as mountains, plains, hills, rivers, and lakes, and set the height, slope, and roughness parameters of the terrain in the scene editing system to build the required basic geographical environment; the facility editor is used to add various types of buildings, including residential buildings, office buildings, shopping malls, and hotels. By editing the appearance and internal structure of the building in the scene editing system, it supports the addition of roads, bridges, street lights, and traffic sign facilities.

3. The on-site handling system for foreign-related police situations based on virtual reality simulation training according to claim 1 is characterized in that: The data management and analysis unit analyzes the training record data according to preset evaluation standards and algorithms, generates a detailed evaluation report, points out the strengths and weaknesses of police officers in training, and provides a reference for improving training.

4. The on-site handling system for foreign-related police situations based on virtual reality simulation training according to claim 3 is characterized in that: The descriptive statistical analysis is performed based on the training record data to calculate the mean and standard deviation, where the mean is used to calculate the average performance of police officers on a certain indicator, such as average decision-making time and average operation accuracy, using the following formula: in is the mean, n is the number of data points, x i is the data point.

5. The on-site handling system for foreign-related police situations based on virtual reality simulation training according to claim 1 is characterized in that: The standard deviation is used to measure the degree of dispersion of data and reflect the stability of police officers' performance. The formula is:

6. The on-site handling system for foreign-related police situations based on virtual reality simulation training according to claim 1 is characterized in that: The training record data is collected through an analysis unit, and the collected data includes walking routes, interactive actions with virtual characters, the timing and method of using police equipment and weapons; and records the time nodes and specific decision contents when police officers make decisions when facing different police situations, such as whether to choose to call for support and what negotiation strategy to adopt.

7. The on-site handling system for foreign-related police situations based on virtual reality simulation training according to claim 6 is characterized by: The system is also provided with physiological monitoring equipment, through which the physiological data of police officers during training, including heart rate, blood pressure, and skin electrical response, are collected to assess their psychological stress and tension during the training process.

8. The on-site handling system for foreign-related police situations based on virtual reality simulation training according to claim 1 is characterized in that: In the course design module, a hierarchical and progressive learning path is designed according to the different foundations and training stages of police officers. For novices, training starts with basic foreign-related police scenarios and simple tasks, and gradually increases the difficulty; for police officers with certain experience, the focus is on training in complex and special police scenarios and improving advanced skills.

9. The on-site handling system for foreign-related police situations based on virtual reality simulation training according to claim 1 is characterized in that: The resource library utilizes knowledge graph technology to associate different types of resources, conduct quality assessment and screening on the collected resources, remove duplicate, erroneous or invalid resources, optimize and improve the content, and improve the quality and availability of resources; the resource library is integrated with other modules of the virtual reality simulation training system to provide a unified interface.

10. The on-site handling system for foreign-related police situations based on virtual reality simulation training according to claim 9 is characterized in that: The evaluation and screening process includes credibility assessment and cluster analysis: weights are assigned to different sources, where resources from government agencies and well-known academic research institutions have higher weights, while sources such as personal blogs have lower weights, and the credibility of resources is evaluated through weighted calculation; similar resources are clustered into one category, and if a resource is significantly different from other resources in its category, it is judged to have quality problems; and the data points are divided into clusters through the K-Means algorithm, so that the similarity of data points in each cluster is higher and the similarity between different clusters is lower, and whether it is an abnormal resource is determined by calculating indicators such as the distance between the resource and the center of the cluster to which it belongs.

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