CN109922449B - Data informatization acquisition, management and analysis system and method - Google Patents
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Abstract
The invention provides a data information acquisition, management and analysis system and a method thereof, wherein the system comprises a data wireless acquisition module, a data management center and a user terminal, and the method comprises the following steps: the data management center receives and stores data which are acquired in real time and sent in time by the data wireless acquisition module; the data management center receives login account information sent by a user terminal, matches the login account information with login account information stored in advance, and establishes communication connection with the user terminal when matching is successful; and the data management center performs abnormity analysis on the received data, and when the received data is abnormal, the abnormal data is sent to a user terminal establishing communication with the data management center so as to present the abnormal data through a human-computer interface of the user terminal.
Description
Technical Field
The invention relates to the technical field of data management and control, in particular to a data informatization acquisition, management and analysis system and method.
Background
With the development of science and technology, early manual monitoring is basically eliminated, a traditional method is to send people to handheld detection equipment in each monitoring area for monitoring, and input acquired data into a related system, the monitoring method is low in efficiency and high in cost, and a user cannot acquire required data in real time.
With the development of computer technology and wireless sensor network technology, a possible method and means are provided for wireless monitoring in a wide area. The wireless sensor network is a network formed by a large number of wireless sensor nodes in a self-organizing mode, has the characteristics of high sensor node density, frequent network topology change, limited node power, computing capacity and data storage capacity and the like, and has wide application prospects in the fields of environmental monitoring military, medical health, household intelligent monitoring and other commercial fields. However, the existing wireless sensor network still has more defects due to the limited energy of the sensor nodes.
Disclosure of Invention
In order to solve the problems, the invention provides a data informatization acquisition, management and analysis system and a data informatization acquisition, management and analysis method.
The purpose of the invention is realized by adopting the following technical scheme:
the embodiment of the first aspect of the invention provides a data informatization acquisition, management and analysis system, which comprises a data wireless acquisition module, a data management center and a user terminal, wherein the data wireless acquisition module is used for acquiring data in real time and transmitting the acquired data to the data management center in time;
the data management center comprises a database, a data management module and a data analysis module, wherein the database is used for storing the data received from the data wireless acquisition module and the login account information of the user terminal, and the data management module is used for managing the received data and the login account information;
the data analysis module establishes communication connection with the user terminal when the login account information sent by the user terminal is matched with the login account information in the database;
the data analysis module is used for carrying out abnormity analysis on the received data, and when the received data is abnormal, the data analysis module sends the abnormal data to a user terminal which establishes communication with the data analysis module so as to display the abnormal data through a human-computer interface of the user terminal;
the data wireless acquisition module comprises a sink node and a plurality of sensor nodes for acquiring data, when the distance from the sensor nodes to the sink node is smaller than a current distance threshold value, a direct communication mode is selected to communicate with the sink node, otherwise, an indirect communication mode is selected to communicate with the sink node, the direct communication mode is that the sensor nodes directly send acquired data to the sink node, the indirect communication mode is that the sensor nodes send the acquired data to a next hop node so as to be forwarded by the next hop node until the acquired data is sent to the sink node.
In a manner that can be realized by the embodiment of the first aspect of the present invention, the received data is managed, including viewing, modifying and/or adding data in a database.
In a manner that can be achieved by the embodiment of the first aspect of the present invention, the data analysis module is further configured to: responding to an access request of a user terminal establishing communication connection with the user terminal, and providing an operation interface of stored data to the user terminal;
and the data analysis module responds to the operation of the user terminal based on the operation interface.
In an implementation manner of the embodiment of the first aspect of the present invention, the login account information includes an account, a password, and identification information of an id card of the account owner.
The embodiment of the second aspect of the invention provides a data informatization acquisition, management and analysis method, which comprises the following steps:
the data management center receives and stores data which are acquired in real time and sent in time by the data wireless acquisition module;
the data management center receives login account information sent by a user terminal, matches the login account information with login account information stored in advance, and establishes communication connection with the user terminal when matching is successful;
and the data management center performs abnormity analysis on the received data, and when the received data is abnormal, the abnormal data is sent to a user terminal establishing communication with the data management center so as to present the abnormal data through a human-computer interface of the user terminal.
In a manner that can be realized by the embodiment of the second aspect of the present invention, the data management center further manages the stored data and the login account information, and the management of the data includes viewing, modifying and/or adding the stored data.
In an implementation manner of the embodiment of the second aspect of the present invention, after establishing the communication connection with the user terminal, the data management center further provides an operation interface of the stored data to the user terminal in response to an access request of the user terminal that establishes the communication connection with the data management center;
and the data management center responds to the operation of the user terminal based on the operation interface.
The embodiment of the invention is based on the wireless sensor network technology, realizes the wireless communication of data and the real-time processing of the data, does not need wiring, and saves manpower and material resources; through the interaction between the data analysis module and the user terminal, the data required by the user can be more effectively presented to the user in real time; the account information of the user terminal is verified, so that the data privacy is protected.
Drawings
The invention is further illustrated by means of the attached drawings, but the embodiments in the drawings do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be obtained on the basis of the following drawings without inventive effort.
FIG. 1 is a block diagram schematic of the structure of a data informatization acquisition, management, and analysis system in accordance with an exemplary embodiment of the present invention;
FIG. 2 is a flow diagram of a data informatization acquisition, management, and analysis system method, according to an exemplary embodiment of the present invention.
Reference numerals:
the system comprises a data wireless acquisition module 1, a data management center 2 and a user terminal 3.
Detailed Description
The invention is further described with reference to the following examples.
Referring to fig. 1, an embodiment of a first aspect of the present invention provides a data informatization acquisition, management and analysis system, where the system includes a data wireless acquisition module 1, a data management center 2 and a user terminal 3, where the data wireless acquisition module 1 is configured to acquire data in real time and transmit the acquired data to the data management center 2 in time;
the data management center 2 comprises a database, a data management module and a data analysis module, wherein the database is used for storing the data received from the data wireless acquisition module 1 and the login account information of the user terminal 3, and the data management module is used for managing the received data and the login account information;
the data analysis module establishes communication connection with the user terminal 3 when the login account information sent by the user terminal 3 is matched with the login account information in the database;
the data analysis module is used for carrying out abnormity analysis on the received data, and when the received data is abnormal, the data analysis module sends the abnormal data to the user terminal 3 which establishes communication with the data analysis module so as to present the abnormal data through a human-computer interface of the user terminal 3;
the data wireless acquisition module 1 comprises a sink node and a plurality of sensor nodes for acquiring data, when the distance from the sensor nodes to the sink node is smaller than a current distance threshold value, a direct communication mode is selected to communicate with the sink node, otherwise, an indirect communication mode is selected to communicate with the sink node, the direct communication mode is that the sensor nodes directly send acquired data to the sink node, and the indirect communication mode is that the sensor nodes send the acquired data to a next hop node so as to be forwarded by the next hop node until the acquired data is sent to the sink node.
In a manner that can be realized by the embodiment of the first aspect of the present invention, the received data is managed, including viewing, modifying and/or adding data in a database.
In a manner that can be achieved by the embodiment of the first aspect of the present invention, the data analysis module is further configured to: responding to an access request of a user terminal 3 establishing communication connection with the user terminal, and providing an operation interface of stored data to the user terminal 3;
and the data analysis module responds to the operation of the user terminal 3 based on the operation interface.
In an implementation manner of the embodiment of the first aspect of the present invention, the login account information includes an account, a password, and identification information of an id card of the account owner.
As shown in fig. 2, a second aspect of the present invention provides a data information collection, management and analysis method, including:
s01 the data management center 2 receives and stores the data collected by the data wireless acquisition module 1 in real time and sent in time.
S02 the data management center 2 receives the login account information sent by the user terminal 3, matches the login account information with the login account information stored in advance, and establishes communication connection with the user terminal 3 when the matching is successful.
S03, the data management center 2 performs an anomaly analysis on the received data, and when the received data is abnormal, sends the abnormal data to the user terminal 3 which establishes communication with the received data, so as to present the abnormal data through the human-computer interface of the user terminal 3.
The data wireless acquisition module 1 comprises a sink node and a plurality of sensor nodes for acquiring data, when the distance from the sensor nodes to the sink node is smaller than a current distance threshold value, a direct communication mode is selected to communicate with the sink node, otherwise, an indirect communication mode is selected to communicate with the sink node, the direct communication mode is that the sensor nodes directly send acquired data to the sink node, and the indirect communication mode is that the sensor nodes send the acquired data to a next hop node so as to be forwarded by the next hop node until the acquired data is sent to the sink node.
In a manner that can be realized by the embodiment of the second aspect of the present invention, the data management center 2 further manages the stored data and the login account information, and the management of the data includes viewing, modifying and/or adding the stored data.
In a manner that can be realized according to the embodiment of the second aspect of the present invention, after establishing the communication connection with the user terminal 3, the data management center 2 further provides an operation interface of the stored data to the user terminal 3 in response to the access request of the user terminal 3 with which the communication connection is established;
and the data management center 2 responds to the operation of the user terminal 3 based on the operation interface.
The embodiment of the invention is based on the wireless sensor network technology, realizes the wireless communication of data and the real-time processing of the data, does not need wiring, and saves manpower and material resources; through the interaction of the data analysis module and the user terminal 3, the data required by the user can be more effectively presented to the user in real time; the account information of the user terminal 3 is verified, so that the data privacy is protected.
In the data informatization acquisition, management and analysis system and method of the embodiment, the maximum communication distance of the sensor nodes is set as RmaxThe minimum communication distance is RminThe distance threshold is set by the sink node and broadcasted to each sensor node, and the sink node sets the initial distance threshold as
The sink node is according to a preset period delta T0Periodically acquiring energy information of all sensor nodes with distances smaller than a current distance threshold, wherein the energy information comprises current residual energy and initial energy of the sensor nodes, and calculating a current residual energy average value P of all the sensor nodesavgAnd the initial energy mean value Pavg0The sink node judges
If the distance threshold value is not satisfied, the sink node updates the current distance threshold value according to the following formula and broadcasts the current distance threshold value to each sensor node, and if the distance threshold value is not satisfied, the sink node does not update the distance threshold value:
in the formula, YT(g) Distance threshold for the g-th update, YT(g-1) is the distance threshold of the g-1 th update, phi is the distance influencer based on energy consumption, phiThe value range is [0.4,0.6 ]]K represents the kth sensor node with the distance to the sink node smaller than the current distance threshold, M is the number of the sensor nodes with the distance to the sink node smaller than the current distance threshold, and Ymin(k) Is the distance, Y, from the kth sensor node to the sensor node closest to the kth sensor node in the communication rangemax(k) The distance from the kth sensor node to the sensor node farthest away in the communication range of the kth sensor node.
When Y isT(g) And stopping updating the distance threshold when the preset distance upper limit is reached or the updating times reach a preset time threshold.
In this embodiment, the sink node performs the predetermined period Δ T0Energy information of sensor nodes with the distance smaller than the current distance threshold is periodically acquired, and the distance threshold is updated only when the energy consumption reaches a certain condition, so that the energy consumption caused by unnecessary threshold distance updating is avoided; through updating the distance threshold, more sensor nodes near the sink node can directly communicate with the sink node to prompt more sensor nodes to undertake the task of data forwarding, so that the pressure of the sensor nodes which are originally in direct communication with the sink node in the aspect of assisting other sensor nodes in forwarding data is reduced, the phenomenon of energy holes is further avoided, and the running stability of the wireless sensor network is improved; the embodiment further provides an updating formula of the distance threshold, which considers the distance values of each sensor node and the neighboring nodes thereof, and takes energy consumption as an influence factor influencing the distance increasing part, so that the increase of the distance threshold can be changed along with the increase of the energy consumption, the updated distance threshold is more suitable for the current network situation, and a certain number of neighboring nodes are ensured to be added into a sensor node set directly communicated with the sink node.
In one embodiment, when the distance from the sensor node to the sink node is not less than the current distance threshold, the sensor node determines its next hop node, and specifically executes:
(1) the sensor node is closer to the sink node relative to the sensor node, and the current residual energy is more than PminNeighbor node ofPoints as candidate nodes, PminIs a preset lowest energy value;
(2) initially, the sensor node sets its own screening distance as RaSelecting the sensor node with the farthest distance from the candidate nodes with the distance smaller than the current screening distance as a next hop node;
(3) the next hop node is according to the set period delta T1Recording the current residual energy of the node at regular time, starting from the fourth period, judging whether the energy consumption of the node meets the following early warning conditions by the next hop node, if so, sending feedback information to the sensor node of the previous hop by the next hop node, prompting the sensor node of the previous hop to update the screening distance of the node, and selecting the sensor node with the farthest distance from the candidate nodes with the distance smaller than the current screening distance as the next hop node again:
in the formula, Pq(h) Represents the current residual energy recorded by the next-hop node q in the h period, Pq(h-2) represents the current residual energy recorded by the next-hop node q in the h-2 th period, Pq(h-4) represents the current residual energy recorded by the next hop node q in the h-4 th period, wherein h is more than or equal to 4.
In the mechanism, the sensor node takes a neighbor node which is closer to the sink node relative to the sensor node and satisfies the energy requirement as a candidate node of the next-hop node, thereby ensuring the directional transmission of data to the sink node and improving the reliability of the next-hop node in forwarding the data; the embodiment further provides a feedback early warning mechanism of the next hop node, wherein the early warning condition is set innovatively, and the next hop node sets the period delta T according to the set period1Recording the current residual energy information of the self at regular time, judging whether the energy consumption condition of the self meets the early warning condition or not according to the current residual energy information from the fourth period, and sending a feedback signal to the sensor node of the previous hop when the energy consumption condition meets the early warning conditionAnd prompting the sensor node of the previous hop to update the screening distance of the sensor node, and selecting the sensor node with the farthest distance from the candidate nodes with the distance smaller than the current screening distance as the next hop node again. The embodiment is beneficial to reducing the probability of packet loss of the next-hop node due to the fact that the energy consumption rate is too high, and is further beneficial to improving the efficiency of the previous-hop sensor node in re-determining the next-hop node.
In one embodiment, the sensor node updates its screening distance according to the following formula:
in the formula, Ya(c) Screening distance, Y, updated at c-th time for sensor node aa(c-1) screening distance, P, of the sensor node a updated at the c-1 th timea(c) For the current remaining energy, P, of the sensor node a at the c-th time of updating the screening distancea0The initial energy of the sensor node a is delta is a preset energy consumption influence factor, and the value range of delta is [0.4,0.6 ]]，RaIs the communication distance of sensor node a;
wherein the screening distance is less than RaAnd at the time of/3, stopping updating the screening distance.
The embodiment further provides a calculation formula of the screening distance, and the calculation formula enables the sensor node to reduce the screening distance when the energy consumption consumed by each average period is larger. The sensor node selects the neighbor node with the farthest distance as the next hop node from the candidate nodes with the distance smaller than the current screening distance, so that the sensor node can select the next hop node with the proper distance according to the energy consumption condition when reselecting the next hop node, the data can be reliably forwarded to the next hop node, the distance of the data sent to the sink node can be shortened as much as possible, and the efficiency of sending the data to the sink node is improved.
It will be clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above function distribution may be performed by different functional modules according to needs, that is, the internal structure of the system is divided into different functional modules to perform all or part of the above described functions. For the specific working process of the system and the terminal described above, reference may be made to the corresponding process in the foregoing method embodiment, which is not described herein again.
From the above description of embodiments, it is clear for a person skilled in the art that the embodiments described herein can be implemented in hardware, software, firmware, middleware, code or any appropriate combination thereof. For a hardware implementation, the processor may be implemented in one or more of the following modules: an application specific integrated circuit, a digital signal processor, a digital signal processing system, a programmable logic device, a field programmable gate array, a processor, a controller, a microcontroller, a microprocessor, other electronic modules designed to perform the functions described herein, or a combination thereof. For a software implementation, some or all of the procedures of an embodiment may be performed by a computer program instructing associated hardware. In practice, the program may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a computer. The computer-readable medium can include, but is not limited to, random access memory, read only memory images, electrically erasable programmable read only memory or other optical disk storage, magnetic disk storage media or other magnetic storage systems, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (7)
1. The data information collection, management and analysis system is characterized by comprising a data wireless acquisition module, a data management center and a user terminal, wherein the data wireless acquisition module is used for acquiring data in real time and transmitting the acquired data to the data management center in time;
the data management center comprises a database, a data management module and a data analysis module, wherein the database is used for storing the data received from the data wireless acquisition module and the login account information of the user terminal, and the data management module is used for managing the received data and the login account information;
the data analysis module establishes communication connection with the user terminal when the login account information sent by the user terminal is matched with the login account information in the database;
the data analysis module is used for carrying out abnormity analysis on the received data, and when the received data is abnormal, the data analysis module sends the abnormal data to a user terminal which establishes communication with the data analysis module so as to display the abnormal data through a human-computer interface of the user terminal;
the data wireless acquisition module comprises a sink node and a plurality of sensor nodes for acquiring data, when the distance from the sensor nodes to the sink node is smaller than a current distance threshold value, a direct communication mode is selected to communicate with the sink node, otherwise, an indirect communication mode is selected to communicate with the sink node, the direct communication mode is that the sensor nodes directly send the acquired data to the sink node, and the indirect communication mode is that the sensor nodes send the acquired data to a next hop node so as to forward the acquired data by the next hop node until the acquired data is sent to the sink node;
let the maximum communication distance of the sensor node be RmaxThe minimum communication distance is RminThe distance threshold is set by the sink node and broadcasted to each sensor node, and the sink node sets the initial distance threshold as
The sink node is according to a preset period delta T0Periodically acquiring energy information of all sensor nodes with distances smaller than a current distance threshold, wherein the energy information comprises current residual energy and initial energy of the sensor nodes, and calculating a current residual energy average value P of all the sensor nodesavgAnd the initial energy mean value Pavg0The sink node judges
If the distance threshold value is not satisfied, the sink node updates the current distance threshold value according to the following formula and broadcasts the current distance threshold value to each sensor node, and if the distance threshold value is not satisfied, the sink node does not update the distance threshold value:
in the formula, YT(g) Distance threshold for the g-th update, YT(g-1) is the distance threshold value updated at the g-1 st time, phi is the distance influencer based on energy consumption, and the value range of phi is [0.4,0.6 ]]K represents the kth sensor node with the distance to the sink node smaller than the current distance threshold, M is the number of the sensor nodes with the distance to the sink node smaller than the current distance threshold, and Ymin(k) Is the distance, Y, from the kth sensor node to the sensor node closest to the kth sensor node in the communication rangemax(k) The distance from the kth sensor node to the sensor node farthest away in the communication range of the kth sensor node;
when the distance from the sensor node to the sink node is not less than the current distance threshold, the sensor node determines the next hop node, and specifically executes:
(1) the sensor node is closer to the sink node relative to the sensor node, and the current residual energy is more than PminAs candidate nodes, PminIs a preset lowest energy value;
(2) initially, the sensor node sets its own screening distance as RaSelecting the sensor node with the farthest distance from the candidate nodes with the distance smaller than the current screening distance as a next hop node;
(3) the next hop node is according to the set period delta T1Recording the current residual energy of the node at regular time, starting from the fourth period, judging whether the energy consumption of the node meets the following early warning conditions by the next hop node, if so, sending feedback information to the sensor node of the previous hop by the next hop node, prompting the sensor node of the previous hop to update the screening distance of the node, and selecting the sensor node with the farthest distance from the candidate nodes with the distance smaller than the current screening distance as the next hop node again:
in the formula, Pq(h) Represents the current residual energy recorded by the next-hop node q in the h period, Pq(h-2) represents the current residual energy recorded by the next-hop node q in the h-2 th period, Pq(h-4) represents the current residual energy recorded by the next hop node q in the h-4 th period, wherein h is more than or equal to 4.
2. The system for the informationized collection, management and analysis of data of claim 1, wherein the management of the received data includes viewing, modifying and/or adding data in a database.
3. The data informatization acquisition, management, and analysis system of claim 1, wherein the data analysis module is further configured to: responding to an access request of a user terminal establishing communication connection with the user terminal, and providing an operation interface of stored data to the user terminal;
and the data analysis module responds to the operation of the user terminal based on the operation interface.
4. A data information collection, management and analysis system according to any of claims 1-3 and wherein said login account information includes an account number, a password, and identification information of the account owner's identification card.
5. The data informatization acquisition, management and analysis method is characterized by comprising the following steps of:
the data management center receives and stores data which are acquired in real time and sent in time by the data wireless acquisition module;
the data management center receives login account information sent by a user terminal, matches the login account information with login account information stored in advance, and establishes communication connection with the user terminal when matching is successful;
the data management center performs anomaly analysis on the received data, and when the received data is abnormal, the abnormal data is sent to a user terminal which establishes communication with the data management center so as to present the abnormal data through a human-computer interface of the user terminal;
the data wireless acquisition module comprises a sink node and a plurality of sensor nodes for acquiring data, when the distance from the sensor nodes to the sink node is smaller than a current distance threshold value, a direct communication mode is selected to communicate with the sink node, otherwise, an indirect communication mode is selected to communicate with the sink node, the direct communication mode is that the sensor nodes directly send the acquired data to the sink node, and the indirect communication mode is that the sensor nodes send the acquired data to a next hop node so as to forward the acquired data by the next hop node until the acquired data is sent to the sink node;
let the maximum communication distance of the sensor node be RmaxThe minimum communication distance is RminThe distance threshold is set by the sink nodeThe data is fixed and broadcast to each sensor node, and the sink node sets an initial distance threshold value as
The sink node is according to a preset period delta T0Periodically acquiring energy information of all sensor nodes with distances smaller than a current distance threshold, wherein the energy information comprises current residual energy and initial energy of the sensor nodes, and calculating a current residual energy average value P of all the sensor nodesavgAnd the initial energy mean value Pavg0The sink node judges
If the distance threshold value is not satisfied, the sink node updates the current distance threshold value according to the following formula and broadcasts the current distance threshold value to each sensor node, and if the distance threshold value is not satisfied, the sink node does not update the distance threshold value:
in the formula, YT(g) Distance threshold for the g-th update, YT(g-1) is the distance threshold value updated at the g-1 st time, phi is the distance influencer based on energy consumption, and the value range of phi is [0.4,0.6 ]]K represents the kth sensor node with the distance to the sink node smaller than the current distance threshold, M is the number of the sensor nodes with the distance to the sink node smaller than the current distance threshold, and Ymin(k) Is the distance, Y, from the kth sensor node to the sensor node closest to the kth sensor node in the communication rangemax(k) The distance from the kth sensor node to the sensor node farthest away in the communication range of the kth sensor node;
when the distance from the sensor node to the sink node is not less than the current distance threshold, the sensor node determines the next hop node, and specifically executes:
(1) the sensor node is closer to the sink node relative to the distance between the sensor node and the sink node and the current residual energyGreater than PminAs candidate nodes, PminIs a preset lowest energy value;
(2) initially, the sensor node sets its own screening distance as RaSelecting the sensor node with the farthest distance from the candidate nodes with the distance smaller than the current screening distance as a next hop node;
(3) the next hop node is according to the set period delta T1Recording the current residual energy of the node at regular time, starting from the fourth period, judging whether the energy consumption of the node meets the following early warning conditions by the next hop node, if so, sending feedback information to the sensor node of the previous hop by the next hop node, prompting the sensor node of the previous hop to update the screening distance of the node, and selecting the sensor node with the farthest distance from the candidate nodes with the distance smaller than the current screening distance as the next hop node again:
in the formula, Pq(h) Represents the current residual energy recorded by the next-hop node q in the h period, Pq(h-2) represents the current residual energy recorded by the next-hop node q in the h-2 th period, Pq(h-4) represents the current residual energy recorded by the next hop node q in the h-4 th period, wherein h is more than or equal to 4.
6. The method for the informationized collection, management and analysis of data according to claim 5, wherein the data management center further manages the stored data and the login account information, and the management of the data comprises viewing, modifying and/or adding the stored data.
7. The method of claim 5, wherein after establishing a communication link with the user terminal, the method further comprises:
the data management center responds to an access request of a user terminal establishing communication connection with the data management center and provides an operation interface of stored data to the user terminal;
and the data management center responds to the operation of the user terminal based on the operation interface.
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