CN113098986A - Data sharing and exchanging method and system based on Internet of things - Google Patents
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Abstract
The application relates to the technical field of big data processing, in particular to a data sharing and exchanging method and system based on the Internet of things.A server receives a data acquisition request and judges whether the data acquisition request is sent by a terminal in an interconnection unit where the server is located; if the data acquisition request is sent by terminals in other interconnection units except the interconnection unit where the server is located, the server updates the privacy protection model according to elements in the data acquisition request; and the server inputs the data to be acquired into the privacy protection model to obtain the output data after privacy protection so as to respond to the data acquisition request sent by the terminal. According to the application, the data of the Internet of things can be shared in a larger range while the data security of the Internet of things is ensured.
Description
Technical Field
The application relates to the technical field of big data processing, in particular to a data sharing and exchanging method and system based on the Internet of things.
Background
The Internet of things (Internet of things) is an important component of a new generation of information technology and is also an important development stage of the "informatization" era. As the name implies, the Internet of things is the Internet with connected objects.
At present, the physical and thing interconnection is usually realized in a smaller interconnection unit (for example, a family is taken as the interconnection unit, the physical and thing interconnection is realized in a family, a farm is taken as the interconnection unit, the physical and thing interconnection is realized in a farm, a water conservancy system is taken as the interconnection unit, the physical and thing interconnection is realized in a water conservancy system, a meteorological system is taken as the interconnection unit, the physical and thing interconnection is realized in a meteorological system, and the like). Data collected or generated by each component in an interconnected unit can be shared and exchanged in the interconnected unit, and in the case of a farm, data such as soil moisture content of different places in the farm, irrigation quantity of different places in the farm, illumination quantity of different places in the farm, fertilization quantity of different places in the farm, plant growth conditions of different places in the farm and the like can be shared and exchanged by different servers and different clients in the interconnected unit.
However, in order to ensure the security of data, the data in one interconnection unit is difficult to share with other interconnection units, so that the use range of the data of the internet of things is limited.
Therefore, how to share internet of things data in a larger range while ensuring the security of the internet of things data is a technical problem which needs to be solved by technical personnel in the field at present.
Disclosure of Invention
The application provides a data sharing and exchanging method and system based on the Internet of things, and aims to share the Internet of things data in a larger range while ensuring the safety of the Internet of things data.
In order to solve the technical problem, the application provides the following technical scheme:
a data sharing and exchanging method based on the Internet of things comprises the following steps: the server receives a data acquisition request and judges whether the data acquisition request is sent by a terminal in an interconnection unit where the server is located; if the data acquisition request is sent by terminals in other interconnection units except the interconnection unit where the server is located, the server updates the privacy protection model according to elements in the data acquisition request; and the server inputs the data to be acquired into the privacy protection model to obtain the output data after privacy protection so as to respond to the data acquisition request sent by the terminal.
In the data sharing and exchanging method based on the internet of things, preferably, if the data acquisition request is sent by the terminal in the interconnection unit where the server is located, the server directly uses the data to be acquired as output data to respond to the data acquisition request sent by the terminal.
In the data sharing and exchanging method based on the internet of things, preferably, the identifier of the interconnection unit included in the data acquisition request is compared with the identifier of the interconnection unit where the server is located, so as to determine whether the data acquisition request is sent by the terminal in the interconnection unit where the server is located.
The data sharing and exchanging method based on the internet of things as described above, wherein preferably, the request element set corresponds to the data acquisition requestAnd element weight setSelecting the privacy parameter corresponding to the data acquisition request from a preset privacy parameter set, and selecting the selected privacy parameterAnd applying the privacy protection model to update the privacy protection model.
The data sharing and exchanging method based on the internet of things preferably extracts each element in the data acquisition request to form a request element set; separately computing a set of request elementsClassifying each element into a preset category corresponding to the maximum similarity according to the similarity between each element and the representative keyword of each preset category; will request the element setEach element ofThe weight of the corresponding preset category is used as the weight of the element, thereby forming an element weight set。
A data sharing and exchanging system based on the Internet of things comprises: the system comprises a plurality of interconnection units, a server and a plurality of terminals, wherein each interconnection unit comprises the server and the terminals; the server receives a data acquisition request and judges whether the data acquisition request is sent by a terminal in an interconnection unit where the server is located; if the data acquisition request is sent by terminals in other interconnection units except the interconnection unit where the server is located, the server updates the privacy protection model according to elements in the data acquisition request; and the server inputs the data to be acquired into the privacy protection model to obtain the output data after privacy protection so as to respond to the data acquisition request sent by the terminal.
In the data sharing and exchanging system based on the internet of things, preferably, if the data obtaining request is sent by the terminal in the interconnection unit where the server is located, the server directly uses the data to be obtained as output data to respond to the data obtaining request sent by the terminal.
In the data sharing and exchanging system based on the internet of things, preferably, the identifier of the interconnection unit included in the data obtaining request is compared with the identifier of the interconnection unit where the server is located, so as to determine whether the data obtaining request is sent by the terminal in the interconnection unit where the server is located.
The data sharing and exchanging system based on the internet of things as described above, wherein preferably, the request element set corresponds to the data acquisition requestAnd element weight setSelecting the privacy parameters corresponding to the data acquisition request from a preset privacy parameter set, and selecting the privacy parametersSelected privacy parametersAnd applying the privacy protection model to update the privacy protection model.
The data sharing exchange system based on the internet of things as described above, wherein preferably, each element in the data acquisition request is extracted to form a request element set; separately computing a set of request elementsClassifying each element into a preset category corresponding to the maximum similarity according to the similarity between each element and the representative keyword of each preset category; will request the element setThe weight of the preset category corresponding to each element in the element is used as the weight of the element, thereby forming an element weight set。
In order to solve the technical problems, according to the data sharing and exchanging method and system based on the internet of things, the server can perform privacy protection on data to be acquired according to elements in the data acquisition request, so that when the server provides data to other interconnection units except the interconnection unit where the server is located, the safety of the data can be guaranteed, and the use range of the data of the internet of things is expanded.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
Fig. 1 is a flowchart of a data sharing and exchanging method based on the internet of things according to an embodiment of the present application;
fig. 2 is a schematic diagram of a data sharing and exchanging system based on the internet of things according to an embodiment of the present application.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention.
Example one
As shown in fig. 1, the present application provides a data sharing and exchanging method based on the internet of things, which includes the following steps:
step S110, the server receives a data acquisition request and judges whether the data acquisition request is sent by a terminal in an interconnection unit where the server is located;
specifically, the server receives a data acquisition request, where the data acquisition request includes an identifier of an interconnection unit where a terminal that sent the data acquisition request is located, and compares the identifier of the interconnection unit included in the data acquisition request with the identifier of the interconnection unit where the server is located. If the identification of the interconnection unit contained in the data acquisition request is the same as the identification of the interconnection unit where the server receiving the data acquisition request is located, the data acquisition request is sent by the terminal in the interconnection unit where the server is located; if the identifier of the interconnection unit included in the data acquisition request is different from the identifier of the interconnection unit where the server receiving the data acquisition request is located, the data acquisition request is sent by a terminal in another interconnection unit except the interconnection unit where the server is located.
As an example, the farm system is an interconnected unit, which includes a server, a plurality of terminals, and a plurality of data collectors (e.g., various sensors); the meteorological system is used as an interconnected unit and comprises a server, a plurality of terminals and a plurality of collectors (such as various sensors). And the server of the meteorological system receives the data acquisition request sent by the terminal in the farm system and responds to the data acquisition request.
As another example, the urban traffic monitoring system is used as an interconnected unit and comprises a server, a plurality of terminals and a plurality of monitoring acquisition devices (such as cameras); the market monitoring system is used as an interconnection unit and comprises a server, a plurality of terminals and a plurality of monitoring and collecting devices. And the server of the market monitoring system receives a data acquisition request sent by a terminal in the urban traffic monitoring system and responds to the data acquisition request.
Step S120, if the data acquisition request is sent by the terminal in the interconnection unit where the server is located, the server directly takes the data to be acquired as output data so as to respond to the data acquisition request sent by the terminal;
if the data acquisition request is sent by the terminal in the interconnection unit where the server is located, it indicates that the data to be acquired is stored in the interconnection unit where the server is located (all storage devices in the interconnection unit), and the terminals in the same interconnection unit can safely share and exchange data, so that according to the data acquisition request, the server searches for the data to be acquired in the data stored in the interconnection unit where the server is located, and directly uses the searched data to be acquired as output data to be provided to the terminal sending the request.
Step S130, if the data acquisition request is sent by a terminal in other interconnection units except the interconnection unit where the server is located, the server updates a privacy protection model according to elements in the data acquisition request;
if the data acquisition request is sent by the terminal in other interconnection unit except the interconnection unit where the server is located, extracting each element in the data acquisition request to form a request element setWherein, in the step (A),is an element in the data acquisition request, and n is an element in the setThe amount of the element. For example:for the application range of the data to be acquired,The number of times of using the data to be acquired,The nature of the terminal for acquiring data,Credit for the terminal that acquired the data.
Separately computing a set of request elementsThe similarity between each element in the list and the representative keyword of each preset category, and classifying each element into the preset category corresponding to the maximum similarity. In particular, by the formulaComputing a set of request elementsSimilarity between each element in the list and the representative keyword of each preset category; wherein the content of the first and second substances,as a request element setElement (1) ofAnd representative keywords of preset categoriesBetweenThe similarity of (2);is composed ofAndrelative entropy distance, relative entropy distanceWherein, in the step (A),andall are provided withThe number of the elements is one,is taken from 1 to。
Will request the element setThe weight of the preset category corresponding to each element in the element is used as the weight of the element, thereby forming an element weight setWherein, in the step (A),the weight corresponding to the element is the weight corresponding to the element,is a setThe number of elements in (c). For example:is composed ofThe weight of,Is composed ofThe weight of,Is composed ofThe weight of,Is composed ofThe weight of (c).
Obtaining a request element set corresponding to the request according to the dataAnd element weight setAnd selecting the privacy parameters corresponding to the data acquisition request from a pre-constructed privacy parameter set. Specifically, firstly, a privacy parameter selection index is obtained through calculationWherein, in the step (A),as an element in the data acquisition request,is composed ofThe weight of (a) is determined,is the number of elements in the set. Then, an index is selected according to the privacy parameterSelecting privacy parameters corresponding to the data acquisition request from a pre-constructed privacy parameter set。
Privacy parameters to be selectedAnd applying the updated privacy protection model to the privacy protection model to update the privacy protection model, so that the updated privacy protection model is more suitable for the data acquisition request. Specifically, the updated privacy preserving model is(ii) a Wherein the content of the first and second substances,is the output of the privacy preserving model;data to be acquired input for the privacy protection model;is a generated random number;is a tunable factor, 0<k<1, gradually changing k from 1 to 0 to realize smooth splicing of the overlapped region;the nth characteristic v in the data to be acquired; h is the number of features v in the data to be acquired,is a privacy parameter. When the privacy protection is carried out on the data to be acquired, the security is increased by smoothly splicing the random number on the basis of the data to be acquired, and in addition, the characteristics of the data to be acquired are added on the basis, so that the output data can still embody the characteristics of the original data.
Step S140, the server inputs the data to be acquired into a privacy protection model to obtain output data after privacy protection so as to respond to a data acquisition request sent by the terminal;
according to the data acquisition request, the server searches for data to be acquired in data stored in an interconnection unit (all storage devices in the interconnection unit) where the server is located, then inputs the data to be acquired into a privacy protection model, obtains output responding to the data acquisition request after privacy protection processing of the privacy protection model, and provides the output to a terminal sending the data acquisition request.
Specifically, the data generated by the terminal and the data collected by the collector may be stored in their own storage devices, or both the data generated by the terminal and the data collected by the collector may be stored in the storage devices of the server.
As an example, the data of the terminal birth and the data collected by the collector in the farm system are stored in its own storage device or in the storage device of the server of the farm system. The data of the terminal in the meteorological system and the data collected by the collector are stored in the storage device of the terminal or the storage device of the server of the meteorological system.
As yet another example, the monitoring data collected in the urban traffic monitoring system is stored in a storage device of the terminal or the monitoring collection device, or in a storage device of a server of the traffic monitoring system. The monitoring data collected in the market monitoring system is stored in a storage device of the terminal or the monitoring collecting device, or in a storage of a server of the market monitoring system.
Example two
As shown in fig. 2, the present application further provides a data sharing and exchanging system based on the internet of things, including: a plurality of interconnection units (for example, two interconnection units, a first interconnection unit 210 and a second interconnection unit 220), each of which includes a server and a plurality of terminals (the first interconnection unit 210 includes the server 211, the first terminal 212, and the second terminal 213, and the second interconnection unit 220 includes the server 221, the first terminal 222, and the second terminal 223).
The server receives a data acquisition request and judges whether the data acquisition request is sent by a terminal in an interconnection unit where the server is located;
specifically, the server receives a data acquisition request, where the data acquisition request includes an identifier of an interconnection unit where a terminal that sent the data acquisition request is located, and compares the identifier of the interconnection unit included in the data acquisition request with the identifier of the interconnection unit where the server is located. If the identification of the interconnection unit contained in the data acquisition request is the same as the identification of the interconnection unit where the server receiving the data acquisition request is located, the data acquisition request is sent by the terminal in the interconnection unit where the server is located; if the identifier of the interconnection unit included in the data acquisition request is different from the identifier of the interconnection unit where the server receiving the data acquisition request is located, the data acquisition request is sent by a terminal in another interconnection unit except the interconnection unit where the server is located.
As an example, the farm system is an interconnected unit, which includes a server, a plurality of terminals, and a plurality of data collectors (e.g., various sensors); the meteorological system is used as an interconnected unit and comprises a server, a plurality of terminals and a plurality of collectors (such as various sensors). And the server of the meteorological system receives the data acquisition request sent by the terminal in the farm system and responds to the data acquisition request.
As another example, the urban traffic monitoring system is used as an interconnected unit and comprises a server, a plurality of terminals and a plurality of monitoring acquisition devices (such as cameras); the market monitoring system is used as an interconnection unit and comprises a server, a plurality of terminals and a plurality of monitoring and collecting devices. And the server of the market monitoring system receives a data acquisition request sent by a terminal in the urban traffic monitoring system and responds to the data acquisition request.
If the data acquisition request is sent by the terminal in the interconnection unit where the server is located, the server directly takes the data to be acquired as the response of the terminal to the data acquisition request;
if the data acquisition request is sent by the terminal in the interconnection unit where the server is located, it indicates that the data to be acquired is stored in the interconnection unit where the server is located (all storage devices in the interconnection unit), and the terminals in the same interconnection unit can safely share and exchange data, so that according to the data acquisition request, the server searches for the data to be acquired in the data stored in the interconnection unit where the server is located, and directly provides the searched data to be acquired as a response to the data acquisition request to the terminal sending the request.
If the data acquisition request is sent by terminals in other interconnection units except the interconnection unit where the server is located, the server updates the privacy protection model according to elements in the data acquisition request;
if the data acquisition request is sent by the terminal in other interconnection unit except the interconnection unit where the server is located, extracting each element in the data acquisition request to form a request element setWherein, in the step (A),n is the number of elements in the set for the elements in the data acquisition request. For example:for the application range of the data to be acquired,The number of times of using the data to be acquired,The nature of the terminal for acquiring data,Credit for the terminal that acquired the data.
Separately computing a set of request elementsThe similarity between each element in the list and the representative keyword of each preset category, and classifying each element into the preset category corresponding to the maximum similarity. In particular, by the formulaComputing a set of request elementsSimilarity between each element in the list and the representative keyword of each preset category; wherein the content of the first and second substances,as a request element setElement (1) ofAnd representative keywords of preset categoriesThe similarity between them;is composed ofAndrelative entropy distance, relative entropy distanceWherein, in the step (A),andall are provided withThe number of the elements is one,is taken from 1 to。
Will request the element setThe weight of the preset category corresponding to each element in the element is used as the weight of the element, thereby forming an element weight setWherein, in the step (A),and n is the number of elements in the set. For example:is composed ofThe weight of,Is composed ofThe weight of,Is composed ofThe weight of,Is composed ofThe weight of (c).
Obtaining a request element set corresponding to the request according to the dataAnd element weight setAnd selecting the privacy parameters corresponding to the data acquisition request from a pre-constructed privacy parameter set. Specifically, firstly, a privacy parameter selection index is obtained through calculationWherein, in the step (A),as an element in the data acquisition request,is composed ofThe weight of (a) is determined,is the number of elements in the set. Then, an index is selected according to the privacy parameterSelecting privacy parameters corresponding to the data acquisition request from a pre-constructed privacy parameter set。
Privacy parameters to be selectedAnd applying the updated privacy protection model to the privacy protection model to update the privacy protection model, so that the updated privacy protection model is more suitable for the data acquisition request. Specifically, the updated privacy preserving model is(ii) a Wherein the content of the first and second substances,is the output of the privacy preserving model;data to be acquired input for the privacy protection model;is a generated random number;is a tunable factor, 0<k<1, gradually changing k from 1 to 0 to realize smooth splicing of the overlapped region;the nth characteristic v in the data to be acquired; h is the number of features v in the data to be acquired,is a privacy parameter. When the privacy protection is carried out on the data to be acquired, the security is increased by smoothly splicing the random number on the basis of the data to be acquired, and in addition, the characteristics of the data to be acquired are added on the basis, so that the output data can still embody the characteristics of the original data.
The server inputs data to be acquired into the privacy protection model to obtain output data subjected to privacy protection so as to respond to a data acquisition request sent by the terminal;
according to the data acquisition request, the server searches for data to be acquired in data stored in an interconnection unit (all storage devices in the interconnection unit) where the server is located, then inputs the data to be acquired into a privacy protection model, obtains output responding to the data acquisition request after privacy protection processing of the privacy protection model, and provides the output to a terminal sending the data acquisition request.
Specifically, the data generated by the terminal and the data collected by the collector may be stored in their own storage devices, or both the data generated by the terminal and the data collected by the collector may be stored in the storage devices of the server.
As an example, the data of the terminal birth and the data collected by the collector in the farm system are stored in its own storage device or in the storage device of the server of the farm system. The data of the terminal in the meteorological system and the data collected by the collector are stored in the storage device of the terminal or the storage device of the server of the meteorological system.
As yet another example, the monitoring data collected in the urban traffic monitoring system is stored in a storage device of the terminal or the monitoring collection device, or in a storage device of a server of the traffic monitoring system. The monitoring data collected in the market monitoring system is stored in a storage device of the terminal or the monitoring collecting device, or in a storage of a server of the market monitoring system.
The server carries out privacy protection on the data to be acquired according to the elements in the data acquisition request, so that when the server provides data to other interconnection units except the interconnection unit where the server is located, the security of the data can be ensured, and the application range of the data of the Internet of things is expanded.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A data sharing and exchanging method based on the Internet of things is characterized by comprising the following steps:
the server receives a data acquisition request and judges whether the data acquisition request is sent by a terminal in an interconnection unit where the server is located;
if the data acquisition request is sent by terminals in other interconnection units except the interconnection unit where the server is located, the server updates the privacy protection model according to elements in the data acquisition request;
and the server inputs the data to be acquired into the privacy protection model to obtain the output data after privacy protection so as to respond to the data acquisition request sent by the terminal.
2. The method for sharing and exchanging data based on the internet of things of claim 1, wherein if the data acquisition request is sent by a terminal in an interconnection unit where the server is located, the server directly uses the data to be acquired as output data to respond to the data acquisition request sent by the terminal.
3. The data sharing and exchanging method based on the internet of things of claim 1 or 2, wherein the identification of the interconnection unit included in the data acquisition request is compared with the identification of the interconnection unit where the server is located to judge whether the data acquisition request is sent by the terminal in the interconnection unit where the server is located.
4. The Internet of things-based data sharing and exchanging method of claim 1 or 2, characterized in that the request element set corresponding to the data acquisition request is used as a basisAnd element weight setSelecting the privacy parameter corresponding to the data acquisition request from a preset privacy parameter set, and selecting the selected privacy parameterAnd applying the privacy protection model to update the privacy protection model.
5. The Internet of things-based data sharing and exchanging method is characterized in that each element in the data acquisition request is extracted to form a request element set; separately computing a set of request elementsClassifying each element into a preset category corresponding to the maximum similarity according to the similarity between each element and the representative keyword of each preset category; will request the element setThe weight of the preset category corresponding to each element in the element is used as the weight of the element, thereby forming an element weight set。
6. A data sharing exchange system based on the Internet of things is characterized by comprising: the system comprises a plurality of interconnection units, a server and a plurality of terminals, wherein each interconnection unit comprises the server and the terminals;
the server receives a data acquisition request and judges whether the data acquisition request is sent by a terminal in an interconnection unit where the server is located;
if the data acquisition request is sent by terminals in other interconnection units except the interconnection unit where the server is located, the server updates the privacy protection model according to elements in the data acquisition request;
and the server inputs the data to be acquired into the privacy protection model to obtain the output data after privacy protection so as to respond to the data acquisition request sent by the terminal.
7. The internet-of-things-based data sharing and exchanging system according to claim 6, wherein if the data obtaining request is sent by the terminal in the interconnection unit where the server is located, the server directly uses the data to be obtained as output data to respond to the data obtaining request sent by the terminal.
8. The Internet of things-based data sharing and exchanging system of claim 6 or 7, wherein the identifier of the interconnection unit included in the data acquisition request is compared with the identifier of the interconnection unit where the server is located to determine whether the data acquisition request is sent by the terminal in the interconnection unit where the server is located.
9. The Internet of things-based data sharing and exchanging system of claim 6 or 7, wherein the request element set corresponds to the data acquisition requestAnd element weight setSelecting the privacy parameter corresponding to the data acquisition request from a preset privacy parameter set, and selecting the selected privacy parameterAnd applying the privacy protection model to update the privacy protection model.
10. The internet of things-based data sharing exchange system according to claim 9, wherein each element in the data acquisition request is extracted to form a request element set; separately computing a set of request elementsClassifying each element into a preset category corresponding to the maximum similarity according to the similarity between each element and the representative keyword of each preset category; will request the element setThe weight of the preset category corresponding to each element in the element is used as the weight of the element, thereby forming an element weight set。
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