CN114629894A - Internet of things data transmission method and device - Google Patents
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- CN114629894A CN114629894A CN202210272853.5A CN202210272853A CN114629894A CN 114629894 A CN114629894 A CN 114629894A CN 202210272853 A CN202210272853 A CN 202210272853A CN 114629894 A CN114629894 A CN 114629894A
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- H—ELECTRICITY
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- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
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- H—ELECTRICITY
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Abstract
The invention provides a transmission method of Internet of things data, which comprises the following steps: after the electronic evidence obtaining is detected to be completed, resource information of the Internet of things equipment is obtained; the resource information comprises network bandwidth use information and memory use information of the Internet of things equipment; determining a data transmission strategy according to the resource information; and transmitting data according to the data transmission strategy.
Description
Technical Field
The invention relates to the technical field of data transmission, in particular to a method and a device for transmitting data of an internet of things.
Background
Evidence collection of electronic data refers to a process of confirming, protecting, extracting and archiving electronic evidence which is accepted by a court, reliable and convincing enough and exists in a computer and related peripherals, and the evidence collection of electronic data is often limited by electronic equipment and a network environment, and particularly in the environment of the internet of things, how to safely and efficiently collect data is a difficult problem to be solved urgently.
At present, how to perform safe and efficient data transmission in the environment of the internet of things is still in a primary research stage, and the internet of things equipment is often provided with a processor with low performance and low power consumption, so that efficient algorithm calculation cannot be performed. The general method is to convert the acquired data into a fixed format and communicate by adopting tcp connection, or to adopt http protocol and transmit the data to be transmitted as a request body. However, neither TCP transmission nor HTTP transmission can achieve balance among device performance, efficient transmission, and communication security, which easily affects network operations of normal users and causes problems of evidence-obtaining exposure and resource waste.
Disclosure of Invention
The invention mainly aims to provide a method and a device for transmitting data of the Internet of things, and aims to improve the efficiency of data transmission when electronic data is collected under the environment of the Internet of things.
In order to achieve the above object, the present invention provides a method for transmitting data of an internet of things, including:
step 1, after the completion of electronic evidence obtaining is detected, resource information of equipment of the Internet of things is obtained; the resource information comprises network bandwidth use information and memory use information of the Internet of things equipment;
step 2, determining a data transmission strategy according to the resource information, wherein the data transmission strategy comprises the following steps:
determining the current network resource state according to the network bandwidth use condition:
when the network bandwidth utilization rate is less than 50%, the network is in a sufficient state, the transmission of the evidence data is not affected, and data caching and data deduplication are not performed;
when the network bandwidth utilization rate is more than or equal to 50% and less than 80%, the network resource is in a tension state, and the data obtained by evidence collection is subjected to duplicate removal;
when the network bandwidth utilization rate is more than or equal to 80%, the state is in a network resource shortage state, the data obtained by evidence collection is subjected to duplicate removal, the data subjected to duplicate removal is written into a data buffer area, and the data is sent out when the network resource is in a sufficient state;
and 3, transmitting data according to the data transmission strategy.
Wherein, step 1 still includes: detecting the completion of electronic evidence obtaining, verifying evidence obtaining data and confirming the completeness of the data; the network card information and the memory information of the Internet of things equipment are periodically read, and the network bandwidth use condition and the memory use condition are calculated, wherein the network bandwidth use condition comprises the network bandwidth size and the network bandwidth use rate, and the memory use condition comprises the residual memory space size and the memory space use rate.
Wherein the periodic read is set to read every 60 seconds;
when the buffer area is set, when the utilization rate of the memory is lower than 50%, the size of the buffer area is set to be 80% of the residual memory space; when the memory usage rate is greater than or equal to 50% and less than 80%, setting the buffer Size to Size = (net _ i × 70% + net _ a × 30%) + m; the current network bandwidth utilization rate of the net _ i, the net _ a is the network bandwidth utilization rate obtained last time, and the m is the size of the residual memory space.
Wherein, the data deduplication comprises: performing reverse index analysis on the evidence data, marking data records with high frequency in the evidence data in the adjacent time, reserving the first data record, and discarding other repeated data records;
wherein the data records in the forensic data have timestamps indicating the forensic time of the data records; the adjacent time is calculated according to the time stamp of the data record in the evidence data, and the range of the adjacent time is set to be between 300 and 3000 seconds;
when the memory space utilization rate is higher than 80%, the range of the adjacent time is expanded, and the data deduplication ratio is improved.
Wherein, after the data is transmitted, the data buffer area is emptied.
The invention also provides a transmission device of the data of the internet of things, which comprises the following components:
the resource acquisition module is used for acquiring resource information of the Internet of things equipment after the electronic evidence obtaining is detected to be completed; the resource information comprises network bandwidth use information and memory use information of the Internet of things equipment;
a transmission policy module, configured to determine a data transmission policy according to the resource information, where the data transmission policy includes:
determining the current network resource state according to the network bandwidth use condition:
when the network bandwidth utilization rate is less than 50%, the network resource is in a sufficient state, the transmission of the evidence data is not affected, and data caching and data deduplication are not performed;
when the network bandwidth utilization rate is more than 50% and less than 80%, the network resource is in a tension state, and the data obtained by evidence collection is subjected to duplicate removal;
when the network bandwidth utilization rate is more than 80%, the state is in a network resource shortage state, the data obtained by evidence collection is subjected to duplicate removal, the data subjected to duplicate removal is written into a data buffer area, and the data is sent out when the network resource is in a sufficient state;
and the data transmission module is used for transmitting data according to the data transmission strategy.
Wherein, the resource obtaining module further comprises: detecting the completion of electronic evidence obtaining, verifying evidence obtaining data and confirming the completeness of the data; the network card information and the memory information of the Internet of things equipment are periodically read, and the network bandwidth use condition and the memory use condition are calculated, wherein the network bandwidth use condition comprises the network bandwidth size and the network bandwidth use rate, and the memory use condition comprises the residual memory space size and the memory space use rate.
Wherein the periodic read is set to read every 60 seconds;
when the buffer is set, the buffer Size is set to Size = (net _ i × 70% + net _ a × 30%) × m; the current network bandwidth utilization rate of the net _ i, the net _ a is the network bandwidth utilization rate obtained last time, and the m is the size of the residual memory space.
Wherein, the data deduplication module comprises: performing reverse index analysis on the evidence data, marking data records with high frequency in the evidence data in the adjacent time, reserving the first data record, and discarding other repeated data records;
wherein the data records in the forensic data have timestamps indicating the forensic time of the data records; the adjacent time is calculated according to the time stamp of the data record in the evidence data, and the range of the adjacent time is set to be between 300 and 3000 seconds;
when the memory space utilization rate is higher than 80%, the range of the adjacent time is expanded, and the data deduplication ratio is improved.
Wherein, after the data is transmitted, the data buffer area is emptied.
The invention also comprises transmission equipment of the data of the Internet of things, which comprises a memory, a processor and a computer program which is stored on the memory and can be run on the processor, wherein the processor realizes the transmission method of the data of the Internet of things when executing the program.
The invention also comprises a computer-readable storage medium which stores computer-executable instructions, and is characterized in that the computer-executable instructions are used for executing the transmission method of the data of the Internet of things.
The beneficial effects of the invention include: (1) the network bandwidth use information and the memory use information of the Internet of things equipment are comprehensively considered, a targeted data transmission strategy is formulated, the data deduplication and the buffer area are started timely, and balance among equipment performance, efficient transmission and communication safety is found as far as possible; (2) the buffer area is set, the change trend of the residual memory space and the network bandwidth utilization rate is comprehensively considered, and the processing burden of the equipment of the Internet of things is reduced; (3) and an intelligent data deduplication mechanism fully utilizes the residual memory space and effectively reduces the network transmission burden.
Drawings
FIG. 1 is a flow chart of the method of the present invention.
Detailed Description
The invention mainly aims to provide a method and a device for transmitting data of the Internet of things, and aims to improve the efficiency of data transmission when electronic data is collected under the environment of the Internet of things.
In order to achieve the above object, the present invention provides a method for transmitting data of an internet of things, including:
step 1, after the completion of electronic evidence obtaining is detected, resource information of equipment of the Internet of things is obtained; the resource information comprises network bandwidth use information and memory use information of the equipment of the Internet of things;
the method comprises the following steps that the Internet of things equipment depends on a libpcap packet capturing module to capture a network flow packet, and uses an iftop to perform network flow data statistics, so as to obtain the size of a network bandwidth, and calculate the real-time network bandwidth utilization rate of the Internet of things equipment, and the specific implementation mode is as follows:
monitoring a network card iftop-ibr 0-n;
network bandwidth usage = real-time traffic data size/network bandwidth;
the monitoring process periodically executes:
i. monitoring the network bandwidth usage information at intervals of 60s, and writing data into a/tmp/resource file
And ii, reading the residual memory use information at intervals of 60s, and writing the residual memory use information into a file.
Step 2, determining a data transmission strategy according to the resource information, wherein the data transmission strategy comprises:
determining the current network resource state according to the network bandwidth use condition:
when the network bandwidth utilization rate is less than 50%, the network resource is in a sufficient state, the transmission of the evidence data is not affected, and data caching and data deduplication are not performed;
when the network bandwidth utilization rate is more than or equal to 50% and less than 80%, the network resource is in a tension state, and the data obtained by evidence collection is subjected to duplicate removal;
when the network bandwidth utilization rate is more than or equal to 80%, the state is in a network resource shortage state, the data obtained by evidence collection is subjected to duplicate removal, the data subjected to duplicate removal is written into a data buffer area, and the data is sent out when the network resource is in a sufficient state;
as an extreme case, when both network resources and memory resources are exhausted, the data forensics and transmission process may be suspended, so as to preferentially ensure that the user uses the internet of things device without feeling, only reserve the monitoring process, and wake up the relevant process when the device resources are sufficient.
And 3, transmitting data according to the data transmission strategy.
Wherein, step 1 still includes: detecting the completion of electronic evidence obtaining, verifying evidence obtaining data and confirming the completeness of the data; the method comprises the steps of periodically reading network card information and memory information of the Internet of things equipment, and calculating the use condition of network bandwidth and the use condition of memory, wherein the use condition of the network bandwidth comprises the size of the network bandwidth and the use ratio of the network bandwidth, and the use condition of the memory comprises the size of residual memory space and the use ratio of the memory space.
Wherein the periodic read is set to read every 60 seconds;
when the buffer area is set, when the utilization rate of the memory is lower than 50%, the size of the buffer area is set to be 80% of the residual memory space; when the memory usage rate is greater than or equal to 50% and less than 80%, setting the buffer Size to Size = (net _ i × 70% + net _ a × 30%) + m; the current network bandwidth utilization rate of the net _ i, the net _ a is the network bandwidth utilization rate obtained last time, and the m is the size of the residual memory space.
Wherein the data deduplication comprises: performing reverse index analysis on the evidence data, marking data records with high frequency in the evidence data in the adjacent time, reserving the first data record, and discarding other repeated data records;
data deduplication means that during the evidence obtaining process, numerous repetitive data exist, and only under the condition that network resources are sufficient, triggering cannot be performed, and the obtained data are transmitted completely. When network resources are in shortage or insufficient, data is deduplicated before data transmission, and the deduplication position can be selected to be performed in a buffer area or other storage areas.
Under normal conditions, network data has a certain spatiotemporal correlation, that is, data sent before and after a certain time point may have a certain correlation or repetition, for example, an http website page is visited once, during the visiting period, a plurality of URL requests exist in the same domain name, and only one of the URL requests may be taken as evidence-taking basis.
When the memory space is insufficient, the approach time range can be expanded, the data deduplication proportion is increased, and the range of the whole buffer area can be expanded to the maximum.
Wherein the data records in the forensic data have timestamps indicating the forensic time of the data records; the adjacent time is calculated according to the time stamp of the data record in the evidence data, and the range of the adjacent time is set to be between 300 and 3000 seconds;
when the utilization rate of the memory space is higher than 80%, the range of the adjacent time is expanded, and the data deduplication ratio is improved.
After the data is transmitted, the data buffer area is emptied.
The invention also provides a transmission device of the data of the internet of things, which comprises the following components:
the resource acquisition module is used for acquiring resource information of the Internet of things equipment after the electronic evidence obtaining is detected to be completed; the resource information comprises network bandwidth use information and memory use information of the Internet of things equipment;
a transmission policy module, configured to determine a data transmission policy according to the resource information, where the data transmission policy includes:
determining the current network resource state according to the network bandwidth use condition:
when the network bandwidth utilization rate is less than 50%, the network resource is in a sufficient state, the transmission of the evidence data is not affected, and data caching and data deduplication are not performed;
when the network bandwidth utilization rate is more than 50% and less than 80%, the network resource is in a tension state, and the data obtained by evidence collection is subjected to duplicate removal;
when the network bandwidth utilization rate is more than 80%, the state is in a network resource shortage state, the data obtained by evidence collection is subjected to duplicate removal, the data subjected to duplicate removal is written into a data buffer area, and the data is sent out when the network resource is in a sufficient state;
and the data transmission module is used for transmitting data according to the data transmission strategy.
Wherein, the resource obtaining module further comprises: detecting the completion of electronic evidence obtaining, verifying evidence obtaining data and confirming the completeness of the data; the network card information and the memory information of the Internet of things equipment are periodically read, and the network bandwidth use condition and the memory use condition are calculated, wherein the network bandwidth use condition comprises the network bandwidth size and the network bandwidth use rate, and the memory use condition comprises the residual memory space size and the memory space use rate.
Wherein the periodic read is set to read every 60 seconds;
when the buffer is set, the buffer Size is set to Size = (net _ i + 70% + net _ a + 30%) = m; the current network bandwidth utilization rate of the net _ i, the net _ a is the network bandwidth utilization rate obtained last time, and the m is the size of the residual memory space.
Wherein, the data deduplication module comprises: performing reverse index analysis on the evidence data, marking data records with high frequency in the evidence data in the adjacent time, reserving the first data record, and discarding other repeated data records;
wherein the data records in the forensic data have timestamps indicating the forensic time of the data records; the adjacent time is calculated according to the time stamp of the data record in the evidence data, and the range of the adjacent time is set to be between 300 and 3000 seconds;
when the memory space utilization rate is higher than 80%, the range of the adjacent time is expanded, and the data deduplication ratio is improved.
Wherein, after the data is transmitted, the data buffer area is emptied.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A transmission method of Internet of things data comprises the following steps:
step 1, after the completion of electronic evidence obtaining is detected, resource information of equipment of the Internet of things is obtained; the resource information comprises network bandwidth use information and memory use information of the Internet of things equipment;
step 2, determining a data transmission strategy according to the resource information, wherein the data transmission strategy comprises:
determining the current network resource state according to the network bandwidth use condition:
when the network bandwidth utilization rate is less than 50%, the network is in a sufficient state, the transmission of the evidence data is not affected, and data caching and data deduplication are not performed;
when the network bandwidth utilization rate is more than or equal to 50% and less than 80%, the network resource is in a tension state, and the data obtained by evidence collection is subjected to duplicate removal;
when the network bandwidth utilization rate is more than or equal to 80%, the state is in a network resource shortage state, the data for evidence collection is subjected to duplicate removal, the data subjected to duplicate removal is written into a data buffer area, and the data is sent out when the network resource is in a sufficient state;
step 3, transmitting data according to the data transmission strategy;
wherein, step 1 still includes: detecting the completion of electronic evidence obtaining, verifying evidence obtaining data and confirming the completeness of the data; periodically reading network card information and memory information of the Internet of things equipment, and calculating network bandwidth use conditions and memory use conditions, wherein the network bandwidth use conditions comprise network bandwidth size and network bandwidth use rate, and the memory use conditions comprise residual memory space size and memory space use rate;
when the buffer area is set, when the utilization rate of the memory is lower than 50%, setting the size of the buffer area to be 80% of the residual memory space; when the memory usage rate is 50% or more and less than 80%, setting the buffer Size to Size = (net _ i × 70% + net _ a × 30%) = m; the current network bandwidth utilization rate of the net _ i, the net _ a is the network bandwidth utilization rate obtained last time, and the m is the size of the residual memory space.
2. The method of claim 1, wherein the periodic reading is set to read every 60 seconds.
3. The method of claim 1, wherein data deduplication comprises: performing reverse index analysis on the evidence data, marking data records with high frequency in the evidence data in the adjacent time, reserving the first data record, and discarding other repeated data records; wherein the data records in the forensic data have timestamps indicating the forensic time of the data records; the adjacent time is calculated according to the timestamp of the data record in the evidence data, and the range of the adjacent time is set to be between 300 and 3000 seconds; when the memory space utilization rate is higher than 80%, the range of the adjacent time is expanded, and the data deduplication proportion is improved.
4. The method of claim 1, wherein the data buffer is emptied after the data is transferred.
5. A transmission device of Internet of things data comprises:
the resource acquisition module is used for acquiring resource information of the Internet of things equipment after the electronic evidence obtaining is detected to be completed; the resource information comprises network bandwidth use information and memory use information of the Internet of things equipment;
a transmission policy module, configured to determine a data transmission policy according to the resource information, where the data transmission policy includes:
determining the current network resource state according to the network bandwidth use condition:
when the network bandwidth utilization rate is less than 50%, the network resource is in a sufficient state, the transmission of the evidence data is not affected, and data caching and data deduplication are not performed;
when the network bandwidth utilization rate is more than 50% and less than 80%, the network resource is in a tension state, and the data obtained by evidence collection is subjected to duplicate removal;
when the network bandwidth utilization rate is more than 80%, the state is in a network resource shortage state, the data obtained by evidence collection is subjected to duplicate removal, the data subjected to duplicate removal is written into a data buffer area, and the data is sent out when the network resource is in a sufficient state;
the data transmission module is used for transmitting data according to the data transmission strategy;
wherein, the resource obtaining module further comprises: detecting the completion of electronic evidence obtaining, verifying evidence obtaining data and confirming the completeness of the data; periodically reading network card information and memory information of the Internet of things equipment, and calculating network bandwidth use conditions and memory use conditions, wherein the network bandwidth use conditions comprise network bandwidth size and network bandwidth use rate, and the memory use conditions comprise residual memory space size and memory space use rate; when the buffer is set, the buffer Size is set to Size = (net _ i × 70% + net _ a × 30%) × m; the current network bandwidth utilization rate of the net _ i, the net _ a is the network bandwidth utilization rate obtained last time, and the m is the size of the residual memory space.
6. The apparatus of claim 5, wherein the periodic reading is arranged to be read every 60 seconds.
7. The apparatus of claim 5, wherein the data deduplication module comprises: performing reverse index analysis on the evidence data, marking data records with high frequency in the evidence data in the adjacent time, reserving the first data record, and discarding other repeated data records; the data records in the forensic data have timestamps, and the timestamps represent the forensic time of the data records; the adjacent time is calculated according to the timestamp of the data record in the evidence data, and the range of the adjacent time is set to be between 300 and 3000 seconds; when the memory space utilization rate is higher than 80%, the range of the adjacent time is expanded, and the data deduplication proportion is improved.
8. The apparatus of claim 5, wherein the data buffer is emptied after the data is transferred.
9. An internet-of-things data transmission device, comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor executes the program to implement the internet-of-things data transmission method according to any one of claims 1 to 4.
10. A computer-readable storage medium storing computer-executable instructions for performing the method of transmitting data of the internet of things according to any one of claims 1 to 4.
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