Method and system for emergency command video conference based on cross-platform

Abstract

The invention discloses a cross-platform-based emergency command video conference method and system, and belongs to the field of emergency command video conferences. Comprising the following steps: step (1), establishing a video conference terminal database which is a MySQL database or a NoSQL database; the service layer comprises a data compiling layer, a data storage layer and a data interaction layer, the data storage layer comprises a unit information database, and the service layer is used for providing an interface for unit query and addition, receiving a request of a user and processing the request; step (3), a front-end display layer: the front-end display layer comprises a rapid query terminal, a screening terminal and a positioning terminal, and the front-end display layer is used for providing a user interface; and (4) outputting a result. According to the method, the query request of the user can be quickly responded, and accurate unit information can be returned in a short time. The unit information can be updated in real time, and the timeliness of data is ensured.

Description

Technical Field

[0001] The present invention belongs to the field of emergency command video conferencing, and more specifically, relates to a method and system for emergency command video conferencing based on a cross-platform. Background Art

[0002] Compared with offline meetings, video conferencing system technology has developed rapidly, showing high convenience and timeliness, and is increasingly widely used by various business departments and industries, especially for emergency command and dispatch and decision-making in the face of emergencies. Since business departments need to communicate quickly, understand the on-site situation, and convey relevant orders, video conferencing is currently the best choice and the most commonly used method. However, due to confidentiality requirements and current technical limitations, the number of access terminals in a video conferencing system ranges from hundreds to thousands. Conference organizers face difficulties in querying and locating units, easy misselection, and complex operations to change venues. In order to improve the efficiency of handling emergencies and further improve the efficiency and convenience of using video conferencing systems, a solution that can quickly query and locate units and add units is needed to meet the needs of users of the emergency command platform to quickly and accurately find the required units when organizing video conferences.

[0003] Therefore, a method and system for cross-platform emergency command video conferencing is very necessary. Summary of the invention

[0004] In order to solve the above problems, the present invention adopts corresponding technical solutions, which can effectively use indexing technology to realize the rapid query and location addition of thousands of conference terminals and nearly 100 units in the video conferencing system, thereby improving the organizational efficiency and user experience of video conferencing. The technical solutions adopted by the present invention are as follows: A method for emergency command video conferencing based on cross-platform, Step (1): Video conference terminal database; Step (2): Service layer: including data compilation layer, data storage layer and data interaction layer, the data storage layer includes unit information database, the service layer is used to provide unit query and addition interface, receive user requests and process them; Step (3): front-end display layer: the front-end display layer includes quick query, screening and positioning terminals, and the front-end display layer is used to provide a user interface; Step (4): Output the results.

[0005] Through the above implementation, it is possible to quickly respond to the user's query request and return accurate unit information in a short time. Support multiple query methods, such as unit name, unit keywords, unit industry, etc. Ensure the accuracy and completeness of unit query results to avoid missing unit information or incorrect unit information. Able to update unit information in real time to ensure the timeliness of data. When adding a unit, the unit can be quickly located and accurately added. Generally, the network of the terminal for emergency command video conferencing uses a 3G, 4G or 5G network for video conferencing. The above network helps to reduce communication costs.

[0006] In some specific implementations, the unit information database includes the unit name, unit ID, unit industry, unit contact person, and unit contact information. The data storage layer is used to create corresponding indexes for key fields according to the user's query requirements, and the service layer interacts with the data storage layer to perform query and add operations, and encapsulate and return the query results.

[0007] In some specific implementations, the database is a MySQL database or a NoSQL database, such as MongoDB. Through the MySQL database, it can be run on a variety of operating systems, including Linux, Windows, macOS, etc. MySQL provides powerful data encryption and access control functions to protect data security. By selecting the MySQL database, the corresponding video conferencing terminal can be matched in different units to meet a variety of operating system platforms, avoiding incompatibility due to inconsistent operating systems.

[0008] In some specific implementations, the service layer also includes a Beidou satellite communication system and an emergency broadcast, and the Beidou satellite communication system includes collecting the location of the unit and providing emergency communication, and the location is displayed in real time in the front-end display layer. Through Beidou satellite communication, an emergency treatment plan can be provided in real time when an emergency occurs, and at the same time, it can support a quick response to the user's query request, avoiding the failure of the corresponding unit to access the video conference due to the offline or communication failure of a certain unit. At the same time, in conjunction with the MySQL database, the corresponding operating system platform can be adapted, and the method of cross-platform emergency command video conferencing can also be guaranteed to run accurately. At the same time, when the corresponding unit is in an emergency situation, such as an emergency, any abnormal connection of any unit will cause serious consequences. Once a video conference or voice communication fails, the location of the unit can be displayed after positioning through Beidou satellite communication, and the emergency broadcast around the unit can be connected. The corresponding unit can be notified to connect to the meeting through the emergency broadcast, or the user can issue instructions, so that the conference organizer can clarify the information of each unit participating in the meeting in real time, and further help the smooth progress of the emergency command video conference.

[0009] In some specific implementations, the index of the video conferencing terminal database is a B+ tree index, a hash index, or a full-text index.

[0010] For fields with uniqueness and sorting requirements such as unit ID and unit name, using B+ tree index can speed up range query and sorting operations. For some fields that are frequently used for exact match queries, such as short strings of unit names, hash index is used. It can quickly locate specific records. For situations where fuzzy text search is required, such as querying based on unit profile or business scope, full-text index is used. When indexing, precise query can be performed: when the user enters a clear unit name or unit ID, the corresponding record is directly located through the corresponding index. Fuzzy query is also supported, that is, for the input keywords, full-text index is used for matching search and returning relevant unit information. Combined query is also supported, that is, users can enter multiple query conditions at the same time, such as unit name and industry, and obtain results that meet the conditions through the joint use of indexes. As data grows and is updated, indexes are optimized regularly to improve query performance. When accessing the database, for requests with frequent queries and relatively stable results, cache technology can be used to store query results to reduce the number of database accesses. Through the index of the above video conference terminal database, it is also possible to organize meetings intelligently, and support the collection of common meeting type databases, such as traffic accidents, health emergencies, safety emergencies, natural disasters and other meeting types. Therefore, it is possible to intelligently analyze and compare the terminals of the previous N (5≥N≥1) participating units in emergency situations, and realize one-click meeting unit selection and organization through simulation collection. Respond to traffic accidents more quickly and conveniently.

[0011] Especially when dealing with traffic accidents, because traffic accidents often occur frequently, and in special sections, the frequency of occurrence is directly positively correlated with the section, and it is high-frequency. Emergency handling involves traffic police, hospitals, insurance companies and other departments. It can intelligently analyze and compare the terminals of the participating units before the traffic accident N times (5≥N≥1), and realize one-key conference unit selection and group meeting through simulation collection. Respond to traffic accidents more quickly and conveniently. It can quickly restore roads to traffic, avoid longer congestion, and increase the probability of new traffic accidents. The service layer also includes Beidou satellite communications and emergency broadcasts. The unit location is displayed in real time in the front-end display layer, which helps the conference organizer to further select the nearest units according to the positioning of each unit, implement the fastest rescue and emergency, and quickly connect the corresponding units to the video conference. At the same time, Beidou satellite communications can also sort the locations where accidents occur frequently. Once an accident occurs at the corresponding location, it can intelligently organize meetings in a timely manner by matching the positioning with the saved high-frequency locations. It can also intelligently analyze and compare the terminals of the previous N participating units (5≥N≥1) and realize one-click meeting unit selection and meeting organization through simulated collection, thereby improving emergency response efficiency.

[0012] In some specific implementations, the programming language of the video conference terminal database is Java or Python. In some specific implementations, the programming language of the video conference terminal database is Java, which can be used across platforms and can run Java programs on any platform that supports the Java Virtual Machine (JVM). Therefore, in the video conference for emergency handling, it can be compatible with the access of various units to avoid the video conference not being carried out smoothly due to mismatch, which delays the best rescue time for emergency situations.

[0013] In some specific implementations, the user interface includes inputting query conditions and performing adding operations.

[0014] The user interface allows users to input query conditions and perform adding operations (users can be the initiator of the video conference or the administrator of the video conference), and displays query results and prompt information of successful addition. For example, when adding a unit, unit addition includes data verification and positioning insertion. Data verification is to verify the legality and integrity of the input unit information when adding a unit. Positioning insertion is to determine the insertion position of the new unit in the database based on the index of fields such as the unit name, to ensure the orderliness and uniqueness of the data. At the same time, it also provides a data update interface, allowing administrators or relevant personnel to modify and update unit information, and establish a data synchronization mechanism to ensure that the updated data can be synchronized to the index in a timely manner to ensure the accuracy of the query results.

[0015] In some specific implementations, the paradigm of the unit information table of the unit information database is the third normal form. The unit information table of the unit information database needs to be normalized and standardized, and its data format and coding are consistent. Following the paradigm of database design, the third normal form can reduce data redundancy and ensure data consistency and accuracy. Use a unified data format and coding specification, such as date format, telephone number format, etc. It can be compatible with the access of various units to avoid mismatches that cause the video conference to not proceed smoothly, delaying the best rescue time in emergency situations.

[0016] In some specific implementations, the unit information table includes a JSON field. Considering the possible future changes in the requirements of the unit information table, some spare fields are reserved or a flexible data structure is used to store possible new attributes. By selecting the JSON field, it is convenient to add new unit types or expand the information of existing units when designing the table structure. Create appropriate indexes for fields that are often used for querying, connecting and sorting to improve the efficiency of data retrieval. Reasonably divide tables and partitions to avoid a single table that is too large and affects performance. Ensure the integrity of the data by setting primary key constraints, foreign key constraints and non-null constraints. Define default values ​​and check constraints to ensure the rationality and consistency of the data. Appropriately encrypt and store sensitive information (such as contact information), for example, the last 4 digits of the number can be hidden or any 4 digits in the middle can be hidden, but the specific location of the numbers hidden in all unit information is consistent. Control the access rights to the unit information table to ensure that only authorized personnel can perform read, write and modify operations. In some specific embodiments, instructions can also be given to authorized personnel to only read. When performing access control, perform permission control on unit query and addition operations to ensure that only authorized personnel can perform related operations. At the same time, encrypt and store unit information to ensure data security. Use meaningful and clear field names to facilitate developers and maintenance personnel to understand and operate data. Add clear comments to tables and fields to explain their purpose and meaning. If unit information is associated with other related tables (such as user tables, meeting tables, etc.), establish the correct relationship to support complex business queries and operations. When designing the table structure, consider the data backup and recovery strategy to ensure that it can be quickly restored in the event of a failure or data loss, so that data backup and recovery can be considered, which is safer. Try to ensure the compatibility of the table structure with existing systems or other related systems for data exchange and integration. For audit tracking, you can also add some fields to record the creator, modifier, and modification time of unit information, etc., to facilitate auditing and tracking the change history of data. Perform unit testing, integration testing, and performance testing to ensure the stability and reliability of the system. Deploy the system to the production environment and perform real-time monitoring and maintenance.

[0017] A cross-platform emergency command video conference system includes a cross-platform emergency command video conference method: and also includes the following modules: a video conference terminal database module, a service layer module and a front-end display layer module.

[0018] Beneficial Effects Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention provides a cross-platform emergency command video conference method that can quickly respond to user query requests and return accurate unit information in a short time. It supports multiple query methods, such as unit name, keyword, industry, etc. It ensures the accuracy and completeness of the query results to avoid missing or incorrect unit information. It can update unit information in real time to ensure the timeliness of data. When adding a unit, it can quickly locate and accurately add it.

[0019] (2) The cross-platform emergency command video conferencing method of the present invention also provides a data update interface, allowing administrators or relevant personnel to modify and update unit information, and establishes a data synchronization mechanism to ensure that the updated data can be synchronized to the index in a timely manner to ensure the accuracy of the query results.

[0020] (3) By selecting JSON fields, the table structure should be designed to facilitate adding new unit types or expanding the information of existing units. Create appropriate indexes for fields that are frequently used for querying, joining, and sorting to improve the efficiency of data retrieval. Rationally divide tables and partitions to avoid a single table that is too large and affects performance. Ensure data integrity by setting primary key constraints, foreign key constraints, and non-null constraints. Define default values ​​and check constraints to ensure the rationality and consistency of data.

[0021] (4) The BeiDou satellite communication system can provide emergency response plans in real time when emergencies occur. At the same time, it can support rapid response to user query requests, avoiding the failure of corresponding units to access video conferences due to offline or communication failures of a certain unit. It can also ensure the accurate operation of the cross-platform emergency command video conferencing method, further ensuring the smooth operation of the emergency command video conferencing system.

[0022] (5) The cross-platform emergency command video conferencing system of the present invention can implement a cross-platform emergency command video conferencing method through the above modules. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The present invention is a flowchart of a method for cross-platform emergency command video conferencing in an embodiment of the present invention. DETAILED DESCRIPTION

[0024] The more detailed description of the embodiments of the present invention below is not intended to limit the scope of the claimed invention, but is merely for illustration and not to limit the description of the features and characteristics of the present invention, so as to propose the best mode for performing the present invention, and to be sufficient to enable those skilled in the art to implement the present invention. However, it should be understood that various modifications and variations may be made without departing from the scope of the present invention as defined by the appended claims. The detailed description should be considered only as illustrative, not restrictive, and if there are any such modifications and variations, they will all fall within the scope of the present invention described herein. In addition, the background technology is intended to illustrate the current status and significance of the research and development of the present technology, and is not intended to limit the present invention or the application field of the present application and the present invention.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present invention belongs; the terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0026] The present invention is further described below in conjunction with specific embodiments.

[0027] like Figure 1 As shown, a method for emergency command video conferencing based on a cross-platform, Step (1): Video conference terminal database; Step (2): Service layer: including data compilation layer, data storage layer and data interaction layer, the data storage layer includes unit information database, the service layer is used to provide unit query and addition interface, receive user requests and process them; Step (3): front-end display layer: the front-end display layer includes quick query, screening and positioning terminals, and the front-end display layer is used to provide a user interface; Step (4): Output the results.

[0028] Through the above implementation, it is possible to quickly respond to the user's query request and return accurate unit information in a short time. Support multiple query methods, such as unit name, unit keywords, unit industry, etc. Ensure the accuracy and completeness of unit query results to avoid missing unit information or incorrect unit information. Able to update unit information in real time to ensure the timeliness of data. When adding a unit, the unit can be quickly located and accurately added. Generally, the network of the terminal for emergency command video conferencing uses a 3G, 4G or 5G network for video conferencing. The above network helps to reduce communication costs.

[0029] In some specific implementations, the unit information database includes the unit name, unit ID, unit industry, unit contact person, and unit contact information. The data storage layer is used to create corresponding indexes for key fields according to the user's query requirements, and the service layer interacts with the data storage layer to perform query and add operations, and encapsulate and return the query results.

[0030] In some specific implementations, the database is a MySQL database or a NoSQL database, such as MongoDB. Through the MySQL database, it can be run on a variety of operating systems, including Linux, Windows, macOS, etc. MySQL provides powerful data encryption and access control functions to protect data security. By selecting the MySQL database, the corresponding video conferencing terminal can be matched in different units to meet a variety of operating system platforms, avoiding incompatibility due to inconsistent operating systems.

[0031] In some specific implementations, the service layer also includes a Beidou satellite communication system and an emergency broadcast, and the Beidou satellite communication system includes collecting the location of the unit and providing emergency communication, and the location is displayed in real time in the front-end display layer. Through Beidou satellite communication, an emergency treatment plan can be provided in real time when an emergency occurs, and at the same time, it can support a quick response to the user's query request, avoiding the failure of the corresponding unit to access the video conference due to the offline or communication failure of a certain unit. At the same time, in conjunction with the MySQL database, the corresponding operating system platform can be adapted, and the method of cross-platform emergency command video conferencing can also be guaranteed to run accurately. At the same time, when the corresponding unit is in an emergency situation, such as an emergency, any abnormal connection of any unit will cause serious consequences. Once a video conference or voice communication fails, the location of the unit can be displayed after positioning through Beidou satellite communication, and the emergency broadcast around the unit can be connected. The corresponding unit can be notified to connect to the meeting through the emergency broadcast, or the user can issue instructions, so that the conference organizer can clarify the information of each unit participating in the meeting in real time, and further help the smooth progress of the emergency command video conference.

[0032] In some specific implementations, the index of the video conferencing terminal database is a B+ tree index, a hash index, or a full-text index.

[0033] For fields with uniqueness and sorting requirements such as unit ID and unit name, using B+ tree index can speed up range query and sorting operations. For some fields that are frequently used for exact match queries, such as short strings of unit names, hash index is used. It can quickly locate specific records. For situations where fuzzy text search is required, such as querying based on unit profile or business scope, full-text index is used. When indexing, precise query can be performed: when the user enters a clear unit name or unit ID, the corresponding record is directly located through the corresponding index. Fuzzy query is also supported, that is, for the input keywords, full-text index is used for matching search and returning relevant unit information. Combined query is also supported, that is, users can enter multiple query conditions at the same time, such as unit name and industry, and obtain results that meet the conditions through the joint use of indexes. As data grows and is updated, indexes are optimized regularly to improve query performance. When accessing the database, for requests with frequent queries and relatively stable results, cache technology can be used to store query results to reduce the number of database accesses. Through the index of the above video conference terminal database, it is also possible to organize meetings intelligently, and support the collection of common meeting type databases, such as traffic accidents, health emergencies, safety emergencies, natural disasters and other meeting types. Therefore, it is possible to intelligently analyze and compare the terminals of the previous N (5≥N≥1) participating units in emergency situations, and realize one-click meeting unit selection and organization through simulation collection. Respond to traffic accidents more quickly and conveniently.

[0034] Especially when dealing with traffic accidents, because traffic accidents often occur frequently, and in special sections, the frequency of occurrence is directly positively correlated with the section, and it is high-frequency. Emergency handling involves traffic police, hospitals, insurance companies and other departments. It can intelligently analyze and compare the terminals of the participating units before the traffic accident N times (5≥N≥1), and realize one-key conference unit selection and group meeting through simulation collection. Respond to traffic accidents more quickly and conveniently. It can quickly restore roads to traffic, avoid longer congestion, and increase the probability of new traffic accidents. The service layer also includes Beidou satellite communications and emergency broadcasts. The unit location is displayed in real time in the front-end display layer, which helps the conference organizer to further select the nearest units according to the positioning of each unit, implement the fastest rescue and emergency, and quickly connect the corresponding units to the video conference. At the same time, Beidou satellite communications can also sort the locations where accidents occur frequently. Once an accident occurs at the corresponding location, it can intelligently organize meetings in a timely manner by matching the positioning with the saved high-frequency locations. It can also intelligently analyze and compare the terminals of the previous N participating units (5≥N≥1) and realize one-click meeting unit selection and meeting organization through simulated collection, thereby improving emergency response efficiency.

[0035] In some specific implementations, the programming language of the video conference terminal database is Java or Python. Preferably, the programming language of the video conference terminal database is Java, which can be used across platforms and can run Java programs on any platform that supports the Java Virtual Machine (JVM). Therefore, in the video conference for emergency handling, it can be compatible with the access of various units to avoid the mismatch that causes the video conference to not proceed smoothly, delaying the best rescue time for emergency situations.

[0036] In some specific implementations, the user interface includes inputting query conditions and performing adding operations.

[0037] The user interface allows users to input query conditions and perform adding operations (users can be the initiator of the video conference or the administrator of the video conference), and displays query results and prompt information of successful addition. For example, when adding a unit, unit addition includes data verification and positioning insertion. Data verification is to verify the legality and integrity of the input unit information when adding a unit. Positioning insertion is to determine the insertion position of the new unit in the database based on the index of fields such as the unit name, to ensure the orderliness and uniqueness of the data. At the same time, it also provides a data update interface, allowing administrators or relevant personnel to modify and update unit information, and establish a data synchronization mechanism to ensure that the updated data can be synchronized to the index in a timely manner to ensure the accuracy of the query results.

[0038] In some specific implementations, the paradigm of the unit information table of the unit information database is the third normal form. The unit information table of the unit information database needs to be normalized and standardized, and its data format and coding are consistent. Following the paradigm of database design, the third normal form can reduce data redundancy and ensure data consistency and accuracy. Use a unified data format and coding specification, such as date format, telephone number format, etc. It can be compatible with the access of various units to avoid mismatches that cause the video conference to not proceed smoothly, delaying the best rescue time in emergency situations.

[0039] In some specific implementations, the unit information table includes a JSON field. Considering the possible future changes in the requirements of the unit information table, some spare fields are reserved or a flexible data structure is used to store possible new attributes. By selecting the JSON field, it is convenient to add new unit types or expand the information of existing units when designing the table structure. Create appropriate indexes for fields that are often used for querying, connecting and sorting to improve the efficiency of data retrieval. Reasonably divide tables and partitions to avoid a single table that is too large and affects performance. Ensure the integrity of the data by setting primary key constraints, foreign key constraints and non-null constraints. Define default values ​​and check constraints to ensure the rationality and consistency of the data. Appropriately encrypt and store sensitive information (such as contact information), for example, the last 4 digits of the number can be hidden or any 4 digits in the middle can be hidden, but the specific location of the numbers hidden in all unit information is consistent. Control the access rights to the unit information table to ensure that only authorized personnel can perform read, write and modify operations. In some specific embodiments, instructions can also be given to authorized personnel to only read. When performing access control, perform permission control on unit query and addition operations to ensure that only authorized personnel can perform related operations. At the same time, encrypt and store unit information to ensure data security. Use meaningful and clear field names to facilitate developers and maintenance personnel to understand and operate data. Add clear comments to tables and fields to explain their purpose and meaning. If unit information is associated with other related tables (such as user tables, meeting tables, etc.), establish the correct relationship to support complex business queries and operations. When designing the table structure, consider the data backup and recovery strategy to ensure that it can be quickly restored in the event of a failure or data loss, so that data backup and recovery can be considered, which is safer. Try to ensure the compatibility of the table structure with existing systems or other related systems for data exchange and integration. For audit tracking, you can also add some fields to record the creator, modifier, and modification time of unit information, etc., to facilitate auditing and tracking the change history of data. Perform unit testing, integration testing, and performance testing to ensure the stability and reliability of the system. Deploy the system to the production environment and perform real-time monitoring and maintenance.

[0040] A cross-platform-based emergency command video conference system includes a cross-platform-based emergency command video conference method: and also includes the following modules: a video conference terminal database module, a service layer module and a front-end display layer module.

[0041] In the existing technical solution, all terminals are placed in a drop-down box option, only keyword search is supported, and there is a lack of a hierarchical structure. This does not match the structure of hierarchical groups and units in actual applications, and technically cannot meet actual needs.

[0042] The following is the SQL code for using MySQL database to create the table structure and related indexes for storing unit information in the video conferencing system: Create the database: CREATE DATABASE video_conference_unit; Using Database: USE video_conference_unit; Create a units table: CREATE TABLE units ( unit_id INT AUTO_INCREMENT PRIMARY KEY, unit_name VARCHAR(255) NOT NULL, industry VARCHAR(255), contact_person VARCHAR(255), contact_info VARCHAR(255) ); Create a unit name index (B+ tree index): CREATE INDEX unit_name_index ON units (unit_name); Create an industry index (B+ tree index): CREATE INDEX industry_index ON units (industry); The above code creates a database named video_conference_unit, creates a units table to store unit-related information, and creates indexes for the unit_name and industry fields to improve query efficiency.

[0043] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution can be essentially or partly contributed to the prior art in the form of a software product, and the above integrated unit implemented in the form of a software functional unit can be stored in a computer-readable storage medium, which can be a personal computer, a server, or a network device, etc. The computer-readable storage medium executes some steps of the method described in each embodiment of the present invention. The storage medium includes: a USB flash drive, a mobile hard disk, a magnetic disk, an optical disk, a volatile memory or a non-volatile memory. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM) or a flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example but not limitation, many forms of random access memory (RAM) are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous RAM (SDRAM), double data rate RAM (DDR SDRAM), enhanced RAM (ESDRAM), synchronous link RAM (SLDRAM) and direct RAM bus RAM (DR RAM). Various media that can store program code are also available.

[0044] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0045] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A method for emergency command video conferencing based on a cross-platform, characterized in that: The steps include: Step (1): video conference terminal database, wherein the video conference terminal database is a MySQL database or a NoSQL database; Step (2): Service layer: The service layer includes a data compilation layer, a data storage layer and a data interaction layer. The data storage layer includes a unit information database. The service layer is used to provide an interface for unit query and addition, receive user requests and process them; Step (3): front-end display layer: the front-end display layer includes quick query, screening and positioning terminals, and the front-end display layer is used to provide a user interface; Step (4): Output the results.

2. The method of cross-platform emergency command video conferencing according to claim 1, characterized in that: The unit information database includes unit name, unit ID, unit industry, unit contact person and unit contact information.

3. The method of emergency command video conferencing based on a cross-platform according to claim 1, characterized in that: The service layer also includes a Beidou satellite communication system and emergency broadcasting. The Beidou satellite communication system collects the location of the unit and provides emergency communications. The location is displayed in real time in the front-end display layer. The method based on cross-platform emergency command video conferencing is used for emergency command of traffic accidents.

4. The method for cross-platform emergency command video conferencing according to claim 1, characterized in that: The index of the video conference terminal database is a B+ tree index, a hash index or a full-text index.

5. The method for cross-platform emergency command video conferencing according to claim 1, characterized in that: The programming language of the video conference terminal database is Java or Python.

6. The method for cross-platform emergency command video conferencing according to claim 1, characterized in that: The user interface includes inputting query conditions and executing adding operations.

7. The method for cross-platform emergency command video conferencing according to claim 1, characterized in that: The paradigm of the unit information table of the unit information database is the third normal form.

8. The method for cross-platform emergency command video conferencing according to claim 7, characterized in that: The unit information table includes JSON fields.

9. A cross-platform emergency command video conference system, characterized in that: The method for cross-platform emergency command video conferencing according to any one of claims 1 to 8 further comprises the following modules: Video conferencing terminal database module, service layer module and front-end display layer module.

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