CN116156428A - Workshop personnel information management and control method and system based on digital twinning - Google Patents
Workshop personnel information management and control method and system based on digital twinning Download PDFInfo
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- CN116156428A CN116156428A CN202310100612.7A CN202310100612A CN116156428A CN 116156428 A CN116156428 A CN 116156428A CN 202310100612 A CN202310100612 A CN 202310100612A CN 116156428 A CN116156428 A CN 116156428A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/029—Location-based management or tracking services
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/33—Services specially adapted for particular environments, situations or purposes for indoor environments, e.g. buildings
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/30—Computing systems specially adapted for manufacturing
Abstract
The invention discloses a workshop personnel information management and control method and system based on digital twinning, comprising the steps of constructing personnel positioning base stations and labels by utilizing UWB personnel positioning technology and acquiring personnel positioning information; setting up a personnel information management server, and receiving and processing personnel positioning information and workshop operation data; establishing a database of unified personnel positioning information and workflow information, and storing the personnel positioning information and the workflow information; uploading personnel positioning information to a personnel information management server and a database; constructing a digital twin virtual workshop to be matched with an actual physical environment one by one; and driving personnel in the digital twin virtual workshop to display personnel tracks, working information and production conditions through the positioning information data of the personnel information management server and the information data of the database. The invention makes the production process more transparent and improves the management level.
Description
Technical Field
The invention relates to the technical field of digital twinning, in particular to a workshop personnel information management and control method and system based on digital twinning.
Background
With the development of the field and the technology of the Internet of things in recent years, the digital twinning technology is more and more widely applied, and the digital twinning dynamically displays and presents the behaviors and the information of physical entities in a digital virtual model mode, so that management personnel can control the physical vehicles or production.
With the development of discrete manufacturing industry, in order to effectively improve the production efficiency and the production safety management level, the control requirement on the 'figure law material ring' in the discrete manufacturing industry is more and more strict, so that an informatization means is urgently needed to digitally manage various elements in production.
Publication number CN 109359507A discloses a quick construction method of a workshop personnel digital twin body model, a visual sensing network composed of multiple cameras monitored in all directions is constructed in a workshop global range, each camera is calibrated in an off-line mode, video images are synchronously collected in real time by each camera, people in the past are identified and detected, personnel position information data are used as the digital twin body of a constructor, but the invention only collects the personnel position information, the constructed personnel digital twin body only reflects the position information, the control capability of workshop production information is limited, and the system cannot be combined with actual production, so that the practicability of the system is insufficient.
Disclosure of Invention
The invention aims to provide a workshop personnel information management and control method and system based on digital twinning, which are used for constructing a set of indoor personnel positioning and personnel information model information system, displaying the movement track of personnel and the working state and information of the personnel in real time, and enabling personnel information and environmental information to interact, so that personnel information data are not isolated any more, and further industrial information digital interconnection is more perfect.
The technical solution for realizing the purpose of the invention is as follows:
a workshop personnel information management and control method based on digital twinning comprises the following steps:
constructing a personnel positioning base station and a label by using a UWB personnel positioning technology, and acquiring personnel positioning information;
setting up a personnel information management server, and receiving and processing personnel positioning information and workshop operation data;
establishing a database of unified personnel positioning information and workflow information, and storing the personnel positioning information and the workflow information;
uploading personnel positioning information to a personnel information management server and a database;
constructing a digital twin virtual workshop to be matched with an actual physical environment one by one;
and driving personnel in the digital twin virtual workshop to display personnel tracks, working information and production conditions through the positioning information data of the personnel information management server and the information data of the database.
Further, the personnel positioning information acquired by the personnel positioning base station is uploaded to a personnel information management server and a database through an upper computer.
Further, the step of constructing the personnel positioning base station and the label by utilizing the UWB personnel positioning technology comprises the following steps:
step 1.1, constructing a UWB base station, and initializing and setting the base station and the tag;
step 1.2, arranging base stations according to the production environment, and ensuring that the coverage area is not smaller than the control area;
step 1.3, enabling workshop personnel to carry the tag with them and keep a starting state, and positioning and recording personnel.
Further, the tag is worn on a workshop person through a bracelet or a work board.
Further, the constructor information management server receives and processes the personnel positioning information and workshop operation data specifically as follows:
step 2.1, a personnel information management server builds a browser server in a cloud server mode, formulates a topic format of publishing and subscribing, keeps the same information data topic related to a publishing end and a subscribing end of data information, and realizes the publishing and subscribing of data;
step 2.2, processing the history information data, including storing or recalling the history information data.
Further, uploading the personnel positioning information to the personnel information management server and the database is specifically:
step 4.1, uploading or publishing real-time personnel positioning information to a brooker server through an MQTT protocol by using a computer software;
and 4.2, uploading the historical personnel positioning information to a database by using an upper computer.
Further, the database for establishing unified personnel positioning information and workflow information is specifically:
step 3.1, a personnel positioning information database and a data table are established, wherein the database contains personnel history static information, time stamps, dynamic track information and corresponding working time information;
and 3.2, establishing a workflow information database, wherein the database comprises the condition and information of the completion workload of a certain station or production line, the online condition and operation condition of certain equipment in a factory or production line and the corresponding working time information of each workshop personnel.
Further, the construction of the one-to-one matching of the digital twin virtual workshops and the actual physical environment specifically comprises the following steps:
step 5.1, constructing an equipment model in a workshop through three-dimensional software;
step 5.2, building a workshop virtual environment by utilizing virtual reality software, wherein the virtual environment is mapped with an actual physical environment one by one, and a coordinate system used in building a positioning system is the same as the coverage area of a base station;
step 5.3, building equipment, production lines and personnel models of workshops in a workshop virtual environment by utilizing virtual reality software based on the model in step 5.1, wherein the equipment, production lines and personnel models are matched with the equipment, production lines and personnel data of actual workshops one by one; meanwhile, corresponding state scripts or variables are given to equipment, production lines and personnel;
and 5.4, displaying the statistical information by using a chart function in the virtual reality software.
Further, the displaying of the personnel track, the working information and the production condition by the personnel in the driving digital twin virtual workshop specifically comprises: based on personnel positioning information, driving a character model in a digital twin virtual workshop to move in real time through driving equipment, a production line and status scripts or variables of personnel and then through personnel position information under a subscription theme set by a personnel information management server; and calling the related information stored in the database to match with the current personnel action, and analyzing the current workshop working information and the production condition.
The workshop personnel information management and control system based on the digital twin comprises a UWB positioning module, a personnel information management server, a database and a digital twin virtual workshop model; the UWB positioning module comprises a personnel positioning base station and a tag and is used for acquiring personnel positioning information; the personnel information management server is used for receiving and processing personnel positioning information and workshop operation data; the database stores personnel positioning information and workflow information uniformly; the digital twin virtual workshop model is matched with the actual physical environment one by one, and personnel trajectories, working information and production conditions are displayed by driving personnel in the digital twin virtual workshop model.
Compared with the prior art, the invention has the beneficial effects that:
(1) The method can transmit the personnel data back to construct a virtual personnel twin body, so that the personnel position information can be accurately obtained, and the production information data behind the personnel can be checked;
(2) The personnel position data obtained in real time by the method can be correlated with the production data, so that the man-machine material method ring in the production process can be controlled, the production process is more transparent, and the management level is improved.
Drawings
FIG. 1 is a specific flow chart of an implementation of the present invention.
FIG. 2 is a flow chart of data according to the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and the detailed description, and based on fig. 1 and 2, a workshop personnel information management method based on digital twinning comprises the following steps.
Step 1, a personnel positioning base station and a label are built by utilizing a UWB personnel positioning technology, and the method specifically comprises the following steps:
step 1.1, determining proper UWB positioning device model and parameters according to actual production environment and area, for example, considering specific size of workshops, selecting a base station and a label with the longest communication distance of 400 or 600 meters, and initializing and setting the base station and the label after selecting proper base station and label.
Step 1.2, setting up an upper computer to process the ranging and positioning data transmitted by the received base station, wherein the functions of the upper computer mainly comprise the following two points:
1. the positioning data transmitted by the base station can be received and processed to a certain extent, the data transmitted by the base station is generally the distance between the base station and the tag, and the specific space position and the corresponding coordinates of the tag are determined by the distance between different base stations, so that the upper computer is required to calculate the positioning data, and the function of the upper computer is required to comprise the function of calculating and obtaining the specific coordinates of the tag.
2. The calculated specific coordinates can be transmitted to a database or a server in a certain form of data structure, and after the data transmitted by the base station is received and processed, the coordinate data is converted in a certain form, converted into a form convenient to upload and can be transmitted to the server and the database.
Step 1.3, arranging base stations according to the production environment, wherein the arrangement mode needs to meet the requirement of covering a main area of a working area, and the coverage area is ensured to be large enough as much as possible so as to record the action track of personnel better; meanwhile, recording specific positions of the base station arrangement, including distances between the base stations and coordinate points of the base stations in the environment; the arrangement and the placement cannot influence the actions or the production of personnel in the environment, and meanwhile, the shielding of signals is needed to be noted so as to avoid the problem of precision of personnel positioning; and then recording and inputting the corresponding distance and the two-dimensional coordinates into relevant parameters of corresponding upper computer software.
And 1.4, inputting worker information and related parameters into an upper computer system, and making the label into a bracelet or a tablet to enable workers to carry about and keep a starting state, so that the positioning and recording of the workers can be started.
Step 2, a personnel information management server is built by means of a cloud server and the like, and the server processes data transmitted by a positioning base station and factory operation data, and specifically comprises the following steps:
step 2.1, setting up a browser server in a cloud server renting mode or a local deployment mode to be responsible for receiving and distributing real-time data, making corresponding publishing and subscribing topic formats, keeping information data topics related to a publishing end and a subscribing end of data information identical, for example, naming a name and a work number of a person at a certain station and position state information of the person at the station can be located under the same naming topic, the topic is named as a work number of an employee, a corresponding regulation is also made for a data structure and data content, and the Json file type transmission and the plain text type transmission can be used. The corresponding information of each person mainly comprises basic static information and dynamic position information of the person, wherein the static information mainly comprises related contents such as person names, corresponding working areas and the like, and the dynamic information mainly comprises position information generated when the person moves.
Step 2.2, the historical data, including personnel historical data and factory or workshop production data, are processed and stored in a database or are called by a client to be sent. And (3) according to the named specific theme name in the step (2.1) and the corresponding data structure and data type under the theme, publishing the data information file or the data stream under the specific theme or storing the data information file or the data stream in a corresponding database.
Step 3, a unified personnel positioning information and work information database is established, personnel positioning information and workflow information are stored, and the method specifically comprises the following steps:
step 3.1, a personnel positioning information database and a data table are established, a personnel information table in the production environment is established according to the unified naming rule determined in the step 2.1, the table contains basic position information and time stamp information of personnel, the table is determined by time sequence, and a group of data generated by the position coordinates of the personnel can be indexed according to the action track of the personnel in a period of time.
Step 3.2, a production information database and a data table are established, wherein the database contains production related information and data, and the information and the data mainly comprise the following points:
1. certain equipment in a factory or production line has online conditions and running conditions, including standby time, working time, shutdown time and fault time, and basic static information of responsible personnel corresponding to the equipment is also contained in the equipment, and the part of static information is similar to the step 2.1 and comprises basic information of personnel's work number, name, responsibility and the like.
2. The condition and information that a certain station or production line finishes the workload are provided with corresponding production targets taking time nodes as deadlines for each station or production line, task targets and historical task data corresponding to each station or production line in the corresponding time nodes simultaneously comprise personnel static information in the station or production line, and the personnel static information is similar to step 2.1 and comprises basic information such as personnel work numbers, names, responsibilities and the like.
3. Working time information corresponding to each person comprises working time records and working time records of daily work, and daily on-duty condition records.
And step 4, the personnel positioning information is sent to a server, and serial port or wireless data transmitted by the base station are received through upper computer software and uploaded to the server. The method comprises the following steps:
and 4.1, after the upper computer software receives positioning data transmitted by the on-site UWB base station by using the serial port or the network port, according to the data format of the data table in the step 3.1, the positioning data and the data in the data table of the database contain time stamps and position information in one-to-one correspondence, and the positioning data of appointed personnel are stored into the corresponding data table in the mysql database at fixed time according to the label or the personnel name.
And 4.2, the upper computer software is also utilized to enable the positioning data of the appointed personnel to pass through an MQTT (message queue telemetry transport) protocol, the uniformly named theme name in the step 2.1 is used for defining the transmission quality of the messages released by the message release party and the subscriber, for example, the transmission quality of the messages released by the message release party and the subscriber is at most one time, at least one time or one time, and then the message data is released to a brooker server at regular time according to a certain frequency.
Step 5, constructing a virtual vehicle or matching production environment with an actual physical environment one by one, wherein the specific steps are as follows:
and 5.1, building a plant or production line equipment model by using three-dimensional design software such as SolidWorks, UG, wherein the proportion of the model is the same as that of an actual physical model, so as to prepare for building a virtual environment later.
And 5.2, building a factory or workshop environment in virtual reality software (such as Unity3D, unreal and the like), wherein the area ratio of the environment is the same as the actual ratio, and the coordinate system for building the environment is the same as the coordinate system used for building the positioning system in step 1.2 and the area covered by the base station, so that the virtual environment and the actual physical environment can be mapped in a critical way on the space distance, source data transmitted by a server can be directly used, and the data can be used only by serializing or deserializing the data according to requirements.
And 5.3, building equipment, production lines and personnel models in workshops or factories in a virtual environment, further building the equipment, production lines and personnel models by utilizing the models pre-built in the step 5.1, wherein the operation content is the same as the process of building the environment in the step 5.2, the space size proportion of the equipment, the production lines and the personnel are in one-to-one correspondence with the size proportion of an actual physical model, and simultaneously, the equipment, the production lines and the personnel are endowed with corresponding state scripts or variables, the actions and the states of the virtual models are changed in real time, the digital models can be matched with the actual physical models according to data, and the data are matched with equipment or personnel data generated in the actual production one by one.
Step 5.4, drawing a related chart by utilizing corresponding functions in virtual reality software, such as a bar chart, a Gantt chart and the like, displaying corresponding production information, such as production plan execution condition information, equipment operation statistical information, personnel working condition information and the like, and simultaneously displaying interaction information of personnel and environment, such as whether production responsible persons corresponding to production equipment interact closely with the production equipment in the production process in working time, and whether the duration of stay or approach to the production equipment is within a normal range; whether the production plan completion corresponding to the current day or week matches the activity of the associated personnel, etc.
Step 6, driving a digital model of a person in the digital twin workshop to display a person track, the digital model and the information model through positioning information data and database information data, wherein the method comprises the following specific steps of:
and 6.1, driving scripts or variables in the virtual software model created in the step 5.3 according to information data transmitted by the actual physical model, connecting the virtual software client to the server created in the step 2.1 by utilizing the personnel position data mentioned in the step 4, and driving the character model in the software to move in real time by subscribing the related data of the personnel position under the preset theme on the server, and simultaneously, according to the uniform naming rule defined in the step 3, regularly calling the production related information stored in the database to match with the current personnel action so as to analyze the current workshop or factory work information and the production condition. Personnel information interaction and workshop production information interaction can be mainly divided into the following points according to the responsibilities and the working properties of personnel:
1. the on-duty condition of the personnel drives the actions of the personnel in the virtual world according to the position data generated by the walking of the actual personnel, the action condition of the twin body is checked to obtain the action condition of the actual personnel, certain boundary conditions are set at the same time, and when certain conditions are triggered, the system displays corresponding information, such as off-duty information of the personnel or abnormal information of the unknown position of the personnel; according to the personnel time information stored in the database in the step 3.2, the on-duty time condition of the personnel can be checked, and then the action track of the personnel in a certain period of time is checked, so that whether the working state and the behavior of the personnel accord with the working requirements can be analyzed.
2. According to the working condition of the personnel, according to the related information of the equipment or the production line stored in the step 3.2, according to the working responsibility of the actual personnel or the working equipment correspondingly operated by the personnel, other data in the environment, such as corresponding equipment information data of on-line time, normal working time, standby time and the like of the equipment which is responsible for production or management by the personnel, are utilized to make the personnel interact, and according to the equipment state information and the personnel position information, whether the working state of the equipment meets the working requirement can be analyzed.
3. According to the production planning situation, the situation of the production planning of the current day or week corresponding to the personnel can be checked according to the situation of the completion plan of a certain station or production line stored in the step 3.2, and then the production situation and the production efficiency are analyzed by combining the position information generated by the personnel for a certain period of time. According to the analysis of the specific working condition and the plan completion condition of the personnel, the plan management level can be effectively improved.
Step 6.2, according to the analysis result in step 6.1, using a related chart or plug-in the virtual reality software to intuitively display corresponding production information, wherein the production information mainly comprises the following steps:
1. personnel information management, namely, the personnel time information in the step 3.2 is combined with personnel working state information statistics, personnel working efficiency information statistics and personnel on duty information statistics obtained by analysis in the step 6.1, the information is sorted, the information management of related personnel is carried out by using a chart, and the working condition and the working analysis of a certain personnel can be visually checked.
2. And (3) equipment information management, wherein equipment information is displayed by combining the equipment related operation state information in the step 3.2 with the equipment operation related data, and meanwhile, according to the interaction between personnel information and equipment information in the step 6.1, the statistics information and the chart of the interaction generated by personnel and equipment are listed, wherein the statistics information comprises personnel using equipment duration statistics, equipment utilization rate statistics and equipment operation efficiency statistics.
3. And (3) managing production plan information, namely listing plan completion condition information statistics corresponding to corresponding personnel according to the plan completion condition of the equipment or the production line listed in the step (3.2) and the personnel in the step (6.1), wherein the plan completion condition information statistics comprise personnel completion plan information statistics and plan completion efficiency information statistics.
The workshop personnel information management and control system based on the digital twin comprises a UWB positioning module, a personnel information management server, a database and a digital twin virtual workshop model; the UWB positioning module comprises a personnel positioning base station and a tag and is used for acquiring personnel positioning information; the personnel information management server is used for receiving and processing personnel positioning information and workshop operation data; the database stores personnel positioning information and workflow information uniformly; the digital twin virtual workshop model is matched with the actual physical environment one by one, and personnel trajectories, working information and production conditions are displayed by driving personnel in the digital twin virtual workshop model. The system comprises all the technical features of the method, which are not described here.
Claims (10)
1. The workshop personnel information management and control method based on digital twinning is characterized by comprising the following steps of:
constructing a personnel positioning base station and a label by using a UWB personnel positioning technology, and acquiring personnel positioning information;
setting up a personnel information management server, and receiving and processing personnel positioning information and workshop operation data;
establishing a database of unified personnel positioning information and workflow information, and storing the personnel positioning information and the workflow information;
uploading personnel positioning information to a personnel information management server and a database;
constructing a digital twin virtual workshop to be matched with an actual physical environment one by one;
and driving personnel in the digital twin virtual workshop to display personnel tracks, working information and production conditions through the positioning information data of the personnel information management server and the information data of the database.
2. The workshop personnel information management and control method based on digital twinning according to claim 1, wherein the personnel positioning information acquired by the personnel positioning base station is uploaded to a personnel information management server and a database through an upper computer.
3. The workshop personnel information management and control method based on digital twinning according to claim 2, wherein the step of constructing personnel positioning base stations and labels by using a UWB personnel positioning technology is specifically as follows:
step 1.1, constructing a UWB base station, and initializing and setting the base station and the tag;
step 1.2, arranging base stations according to the production environment, and ensuring that the coverage area is not smaller than the control area;
step 1.3, enabling workshop personnel to carry the tag with them and keep a starting state, and positioning and recording personnel.
4. The digital twinning-based workshop personnel information management method according to claim 3, wherein the tag is worn on the workshop personnel by a bracelet or a work board.
5. The workshop personnel information management and control method based on digital twinning according to claim 2, wherein the staff information management server is set up to receive and process the staff positioning information and the workshop operation data specifically comprises:
step 2.1, a personnel information management server builds a browser server in a cloud server mode, formulates a topic format of publishing and subscribing, keeps the same information data topic related to a publishing end and a subscribing end of data information, and realizes the publishing and subscribing of data;
step 2.2, processing the history information data, including storing or recalling the history information data.
6. The method for managing and controlling personnel information in a workshop based on digital twinning according to claim 1, wherein uploading the personnel positioning information to the personnel information management server and the database is specifically:
step 4.1, uploading or publishing real-time personnel positioning information to a brooker server through an MQTT protocol by using a computer software;
and 4.2, uploading the historical personnel positioning information to a database by using an upper computer.
7. The method for managing and controlling personnel information in workshops based on digital twinning according to claim 1, wherein the step of establishing a database of unified personnel positioning information and workflow information is specifically:
step 3.1, a personnel positioning information database and a data table are established, wherein the database contains personnel history static information, time stamps, dynamic track information and corresponding working time information;
and 3.2, establishing a workflow information database, wherein the database comprises the condition and information of the completion workload of a certain station or production line, the online condition and operation condition of certain equipment in a factory or production line and the corresponding working time information of each workshop personnel.
8. The workshop personnel information management and control method based on digital twinning according to claim 1, wherein the construction of the digital twinning virtual workshop to be matched with the actual physical environment one by one specifically comprises:
step 5.1, constructing an equipment model in a workshop through three-dimensional software;
step 5.2, building a workshop virtual environment by utilizing virtual reality software, wherein the virtual environment is mapped with an actual physical environment one by one, and a coordinate system used in building a positioning system is the same as the coverage area of a base station;
step 5.3, building equipment, production lines and personnel models of workshops in a workshop virtual environment by utilizing virtual reality software based on the model in step 5.1, wherein the equipment, production lines and personnel models are matched with the equipment, production lines and personnel data of actual workshops one by one; meanwhile, corresponding state scripts or variables are given to equipment, production lines and personnel;
and 5.4, displaying the statistical information by using a chart function in the virtual reality software.
9. The workshop personnel information management and control method based on digital twinning according to claim 8, wherein the driving of personnel in the digital twinning virtual workshop for personnel track, work information and production situation display specifically comprises: based on personnel positioning information, driving a character model in a digital twin virtual workshop to move in real time through driving equipment, a production line and status scripts or variables of personnel and then through personnel position information under a subscription theme set by a personnel information management server; and calling the related information stored in the database to match with the current personnel action, and analyzing the current workshop working information and the production condition.
10. The workshop personnel information management and control system based on the digital twinning is characterized by comprising a UWB positioning module, a personnel information management server, a database and a digital twinning virtual workshop model; the UWB positioning module comprises a personnel positioning base station and a tag and is used for acquiring personnel positioning information; the personnel information management server is used for receiving and processing personnel positioning information and workshop operation data; the database stores personnel positioning information and workflow information uniformly; the digital twin virtual workshop model is matched with the actual physical environment one by one, and personnel trajectories, working information and production conditions are displayed by driving personnel in the digital twin virtual workshop model.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117475431A (en) * | 2023-12-27 | 2024-01-30 | 君华高科集团有限公司 | Food safety supervision method and system based on digital twin technology |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117475431A (en) * | 2023-12-27 | 2024-01-30 | 君华高科集团有限公司 | Food safety supervision method and system based on digital twin technology |
| CN117475431B (en) * | 2023-12-27 | 2024-03-15 | 君华高科集团有限公司 | Food safety supervision method and system based on digital twin technology |
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