A data transmission method for industrial Internet of Things realized by multi-network networking

Abstract

The present invention discloses a data transmission method for an industrial Internet of Things realized by multi-network networking. The present invention relates to the technical field of multi-network networking and solves the problem that failure to analyze the transmission protocols between different network networkings will result in a large interaction delay between two sub-devices during interaction. The present invention determines the variance between multiple standard average speeds corresponding to different sub-devices among multiple formats to be converted based on different standard average speeds corresponding to different sub-devices, selects a minimum value from the multiple variances, and thereby locks the corresponding standard format. When the data between the corresponding pending networks are subsequently converted, the rate differences between the conversion rates of the sub-devices between the different pending networks are all in the lowest state. Therefore, when the different sub-devices subsequently perform data interaction, the corresponding transmission delay is reduced to the minimum, thereby ensuring that the data between the multi-network networkings can achieve a better transmission rate during the transmission process, and the transmission delay can be fully guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of multi-network networking, and in particular to a data transmission method of an industrial Internet of Things implemented by multi-network networking. Background Art

[0002] The application with publication number CN117528462B discloses a data transmission method for the industrial Internet of Things implemented by multi-network networking, which belongs to the field of communication technology. It is used to realize that the services of the public network can be carried by the private network through the integration of the public network and the private network, so that the deployment of the services can be more flexible. The method includes: NMS receives a service request from an application service AS, wherein the service request is used to request NMS to perform user plane configuration for the first service of the industrial Internet of Things, and AS provides the first service; NMS determines that the first service needs to be carried by N private networks NPN according to the service request, and N is an integer greater than 1; NMS performs user plane configuration for the first service on the user plane function UPF network element of each of the N NPNs, wherein the user plane configuration for the first service on the UPF network element is to enable the UPF network element to carry the user plane data of the first service.

[0003] Regarding the data transmission process between different devices within different network groups, the transmission channels between the corresponding devices are generally constructed through the networking characteristics between the corresponding devices, and signal transmission is performed. The original processing method only constructs the corresponding transmission channels, and does not analyze the data formats of different sub-devices, nor the transmission protocols between different network groups. As a result, when two sub-devices are interacting with each other, the conversion rates of the corresponding data are greatly different when the format is converted, resulting in a large interaction delay in the data interaction process, which is difficult to solve. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a data transmission method for an industrial Internet of Things implemented by multi-network networking, which solves the problem of not analyzing the data formats of different sub-devices and not analyzing the transmission protocols between different network networking, which will lead to a large interaction delay when two sub-devices perform data interaction.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A data transmission method of industrial Internet of Things implemented by multi-network networking, comprising the following steps:

[0006] S1) confirming the sub-devices that need to transmit data in the multi-network group, and based on the confirmed sub-devices, marking the network group associated with the sub-device as the pending network group, and then based on the terminal server in the pending network group, locking the transmission protocol existing in the terminal server, identifying the same format that can be used for data transmission in multiple pending networks and marking them as the formats to be converted. The specific sub-steps are as follows:

[0007] S11. Based on the determined sub-devices, determine the pending network to which the sub-devices belong, and confirm the pending network to which each sub-device belongs one by one;

[0008] S12, confirm the transmission protocols existing in the terminal servers in the to-be-determined network one by one, lock the data format that can be processed by the corresponding terminal server, and identify the same data format existing in each terminal server based on the multiple sets of data formats associated with each terminal server:

[0009] If it exists, the corresponding same data format is marked as the format to be converted for each pending network;

[0010] If not, identify whether the same data format exists between any two groups of terminal servers. If the same data format exists, mark the same data format between the two groups of terminal servers as the to-be-converted format corresponding to the to-be-determined network. If the same data format does not exist, directly generate an error signal.

[0011] S2), based on the to-be-converted format determined in each to-be-determined network, the data format generated by the corresponding sub-device in each to-be-determined network is calibrated as the main format, and based on the conversion rate between each main format and the to-be-converted format, the best to-be-converted format for each to-be-determined network is selected and calibrated as the standard format. The specific sub-steps are:

[0012] S21, based on the main format and the to-be-converted format determined by each to-be-determined network, identify the conversion rate when the main format is converted to the to-be-converted format from the past processing data, and then average the identified several groups of conversion rates, lock the standard average speed, and mark the standard average speed as J i-k , where i represents different pending networks and k represents different formats to be converted;

[0013] S22. If the format to be converted exists in all pending networks, based on the tag k, determine the standard average speed J of the format with the same tag k in each pending network. i-k , and then the confirmed several groups of standard average speed J i-k Perform variance processing to determine the variance F of the format k to be converted k , and then the multiple groups of standard average speeds corresponding to other formats k to be converted are processed in this way in turn, and the undetermined variance F corresponding to each group of formats k to be converted is obtained k , and then select a set of minimum values ​​from the determined variances to be determined, and calibrate the format to be converted corresponding to the minimum value as the standard format of all the networks to be determined;

[0014] If the format to be converted does not exist in all pending networks, identify the format to be converted determined between two pending networks:

[0015] If there is only one group of the same formats to be converted, this group of formats to be converted will be used as the standard format between the two pending networks.

[0016] If there are multiple groups of the same format to be converted, based on the mark k, the standard average speed J with the same mark k is determined from the corresponding two groups of pending networks. i-k , and then the confirmed several groups of standard average speed J i-k Perform variance processing to determine the variance F of the format k to be converted k , and then the two groups of standard average speeds corresponding to other formats k to be converted are processed in this way in turn, and the undetermined variance F corresponding to each group of formats k to be converted is obtained k , and then select a set of minimum values ​​from the determined pending variances, and calibrate the pending conversion format corresponding to the minimum value as the standard format between the two pending networks;

[0017] Then, the standard formats of the other two pending networks are confirmed one by one in the same manner;

[0018] S3), based on the standard format determined in each pending network, the data generated by the sub-device is format converted, and the data converted into the standard format is transmitted between the pending networks; the specific method is:

[0019] S31. If the standard formats determined by all pending networks are the same, directly convert the format of the data generated by the sub-devices in each pending network, confirm the standard format data, and transmit it between several pending networks;

[0020] S32. If the standard formats determined by all pending networks are not the same format, identify another sub-device that the sub-device needs to interact with, and identify whether a standard format is determined between the pending networks between the two sub-devices:

[0021] If it is determined that there is a standard format: the data generated by this sub-device and another sub-device are converted into a format, and the data converted into the standard format are transmitted between the two to-be-determined networks;

[0022] If no standard format is determined: a signal to be processed is generated, and external personnel determine the pending network for format conversion between this sub-device and another sub-device based on the signal to be processed, and select the standard format within the relevant pending network, and convert the format of the data of the sub-device one by one until the pending network where the other sub-device is located can be processed.

[0023] Preferably, it also includes:

[0024] S4), adjusting the bandwidth parameters of the transmission channel between the two pending networks in the process of data transmission, based on the specific adjustment process, so that the difference in different transmission rates of the same standard format data transmitted in the same transmission channel is minimized, the specific method is:

[0025] S41, based on the standard format determined between the two to-be-determined networks, identifying a transmission channel corresponding to the standard format, and determining a bandwidth parameter DC of the transmission channel;

[0026] S42, making two groups of standard format data synchronously transmit using the transmission channel, controlling the occupied bandwidth of one group of standard format data to gradually increase from 0, and recording different transmission rates V1q of the group of standard format data under different occupied bandwidth value states, and synchronously recording the transmission rate V2q of another group of standard format data at the same time, wherein q represents different moments;

[0027] Record the transmission rate difference Cq of two sets of standard format data at different times, where Cq = |V1q-V2q|, select the minimum value Cqmin from a number of transmission rate differences Cq, and determine the time corresponding to Cqmin;

[0028] S43, identifying the occupied bandwidth corresponding to the two groups of standard format data at this moment, and using the occupied bandwidth as the subsequent used bandwidth corresponding to the standard format data.

[0029] The present invention provides a data transmission method for industrial Internet of Things realized by multi-network networking. Compared with the prior art, it has the following beneficial effects:

[0030] The present invention determines different network groups in the industrial Internet, and then locks the corresponding formats to be converted based on the corresponding network transmission protocols from the different network groups, and then determines the corresponding standard average speed based on the data conversion rate of each format to be converted in each network group, and then determines the variance between the corresponding multiple standard average speeds between the multiple formats to be converted based on the different standard average speeds corresponding to different sub-devices, and selects the minimum value from the multiple variances to lock the corresponding standard format. When the data between the corresponding pending networks is subsequently converted, the rate difference between the conversion rates of the sub-devices between the different pending networks is in the lowest state. Therefore, when the different sub-devices perform data interaction, the transmission delay will not occur due to the relevant difference in the data format conversion time, so that the corresponding transmission delay is reduced to the minimum, ensuring that the data between the multiple network groups can achieve a better transmission rate during the transmission process, and the transmission delay can be fully guaranteed;

[0031] Subsequently, bandwidth adjustment is performed based on the occupied bandwidth in the transmission channel, the occupied bandwidth of the two transmitted data is limited, and the occupied bandwidth used by the two standard format data is selected, so that the transmission rates of the two standard format data can be relatively consistent when they are transmitted synchronously, thereby ensuring that when the two sub-devices are interacting with each other, the interaction delay can be reduced to a minimum, thereby ensuring the data interaction effect between the sub-devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the process of the present invention. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figure 1 The present application provides a data transmission method of an industrial Internet of Things implemented by a multi-network networking, wherein the multi-network networking is a plurality of different heterogeneous networks, wherein a plurality of interconnected sub-devices are associated with the network, and each network has a plurality of transmission protocols, which can convert device data in a specified format, and comprises the following steps:

[0035] S1) confirm the sub-devices that need to transmit data in the multi-network group, and based on the confirmed sub-devices, mark the network group associated with the sub-device as the pending network group, and then lock the transmission protocol existing in the terminal server based on the terminal server in the pending network group, identify the same format of data transmission in multiple pending networks and mark them as the format to be converted. Specifically, if data needs to be transmitted between sub-devices, it is necessary to process the data based on the network to which it belongs before transmission. When transmitting within the network, it is necessary to select a data format that can be interoperable in both networks. If there is no relevant transmission protocol, the data format of the corresponding network transmission cannot be converted in this network, and then the data transmission process between different sub-devices cannot be completed. Among them, the specific sub-steps for identification are:

[0036] S11. Based on the determined sub-devices (that is, related devices in the industrial Internet, determined in advance by the operator), determine the pending network to which the sub-devices belong (the pending network can be understood as a terminal server, and a terminal server is interconnected with multiple sub-devices to form a pending network), and confirm each pending network one by one;

[0037] S12, confirm the transmission protocols existing in the terminal servers in the to-be-determined network one by one, lock the data format that can be processed by the corresponding terminal server, and identify the same data format existing in each terminal server based on the multiple sets of data formats associated with each terminal server:

[0038] If it exists, the corresponding same data format is marked as the format to be converted for each pending network. For example, if the situation exists, it is marked as mode 1: there are three pending networks, corresponding to three terminal servers A, B, and C, among which A can process the data format {G1, G2, G3}, among which B can process the data format {G2, G3, G4}, and C can process the data format {G3, G4, G1, G2}. Then A, B and C all have the same format G3 and G2, so G2 and G3 are directly marked as the format to be converted, and the data between each sub-device can be transmitted normally;

[0039] If it does not exist, identify whether the same data format exists between any two groups of terminal servers. If it does, mark the same data format between the two groups of terminal servers as the to-be-converted format corresponding to the pending network. If it does not exist, directly generate an error signal, indicating that the transmission channel cannot be built for external personnel to view. For example, mark the situation that does not exist as mode 2: there are three pending networks, corresponding to three terminal servers A, B, and C, where A can process the data format of {G1, G2, G3}, where B can process the data format of {G2, G3, G4}, and C can process the data format of {G4, G5, G6}. Then there is no same format of the same type between A and C, but there is between A and B, and between B and C. Then A's data can be converted by B and transmitted to C. Compared with mode 1, it is slower, but it can also complete the data transmission process between different sub-devices.

[0040] S2), based on the to-be-converted format determined in each to-be-determined network, the data format generated by the corresponding sub-device in each to-be-determined network is calibrated as the main format, and based on the conversion rate between each main format and the to-be-converted format, the best to-be-converted format of each to-be-determined network is selected and calibrated as the standard format. Specifically, the corresponding conversion rate can be locked from the past data conversion parameters, wherein the specific sub-steps of the selection are:

[0041] S21, based on the main format and the format to be converted determined by each pending network, identify the conversion rate when the main format is converted to the format to be converted from the past processing data, and then average the identified several groups of conversion rates to lock the standard average speed. The selected several groups of conversion rates are not less than five groups. If there are two groups of formats to be converted, then in this process, two groups of standard average speeds can be determined in the same pending network, and the standard average speed is calibrated as J i-k, where i represents different pending networks, k represents different formats to be converted, and only one group of sub-devices can be selected in each pending network. When other sub-devices in the same pending network also need to transmit data, secondary analysis and processing are required to meet the data transmission process of other sub-devices;

[0042] S22: If the format to be converted exists in all pending networks (corresponding to the method 1 mentioned in step S12), based on the tag k, determine the standard average speed J of the same tag k in each pending network. i-k , and then the confirmed several groups of standard average speed J i-k Perform variance processing to determine the variance F of the format k to be converted k , and then the multiple groups of standard average speeds corresponding to other formats k to be converted are processed in this way in turn, and the undetermined variance F corresponding to each group of formats k to be converted is obtained k , and then select a set of minimum values ​​from the determined variances to be determined, and calibrate the format to be converted corresponding to the minimum value as the standard format of all pending networks. Specifically, here corresponds to method 1, and the three terminal servers are A, B, and C, respectively. The data format that A can process is {G1, G2, G3}, the data format that B can process is {G2, G3, G4}, and the data format that C can process is {G3, G4, G1, G2}. Then A, B, and C all have the same format G3 and G2, so G3 has three sets of average speeds V in the conversion process in A, B, and C. G3 , then the three groups of waiting average speeds can determine the first variance value. Similarly, G2 can also confirm the second variance value. From the two variance values, a group of waiting average speeds corresponding to the minimum variance value can be selected. This selection method is to ensure that the data conversion format rate in each network group can be relatively consistent during data transmission and communication, so that the data processing time is relatively consistent. During transmission, the transmission delay can be effectively reduced, and the transmission effect is guaranteed as a whole, so that the format conversion processing rate in each waiting network group is as consistent as possible, which is convenient for the data between different sub-devices to be transmitted more synchronously;

[0043] If the format to be converted does not exist in all pending networks (corresponding to the method 2 mentioned in step S12), the format to be converted determined between the two pending networks is identified:

[0044] If there is only one group of the same formats to be converted, this group of formats to be converted will be used as the standard format between the two pending networks.

[0045] If there are multiple groups of the same format to be converted, based on the tag k, the standard average speed J with the same tag k is determined from the corresponding two groups of pending networks. i-k, and then the confirmed several groups of standard average speed J i-k Perform variance processing to determine the variance F of the format k to be converted k , and then the two groups of standard average speeds corresponding to other formats k to be converted are processed in this way in turn, and the undetermined variance F corresponding to each group of formats k to be converted is obtained k , and then select a set of minimum values ​​from the determined pending variances, and calibrate the pending conversion format corresponding to the minimum value as the standard format between the two pending networks (this corresponds to method 2, that is, the same pending conversion format existing between the pending networks. In order to minimize the difference in the rate of data conversion formats between the two pending networks, the same variance processing method is used to determine the minimum variance, thereby determining the best standard format);

[0046] Then, the standard formats of the other two pending networks are confirmed one by one in the same manner;

[0047] S3), based on the standard format determined in each pending network, the data generated by the sub-device is format converted, and the data converted into the standard format is transmitted between the pending networks. The specific transmission method is:

[0048] S31. If the standard formats determined by all pending networks are the same, directly convert the format of the data generated by the sub-devices in each pending network, confirm the standard format data, and transmit it between several pending networks;

[0049] S32. If the standard formats determined by all pending networks are not the same format, identify another sub-device that the sub-device needs to interact with, and identify whether a standard format is determined between the pending networks between the two sub-devices:

[0050] If it is determined that there is a standard format: the data generated by this sub-device and another sub-device are converted into a format, and the data converted into the standard format are transmitted between the two to-be-determined networks;

[0051] If no standard format is determined: a signal to be processed is generated, and an external person determines the pending network for format conversion between this sub-device and another sub-device based on the signal to be processed, and selects the standard format within the relevant pending network, and converts the format of the data of the sub-devices one by one until the pending network where the other sub-device is located can be processed;

[0052] Specifically, here is the related conversion problem between public data formats. When the pending formats determined between all pending networks are the same format, the data generated by them can be directly converted into the corresponding standard format for transmission and exchange. If the same format does not exist, it means that when data from different sub-devices are transmitted, the intermediate pending network may need to perform data format conversion. Therefore, human intervention is required to determine the conversion logic and the standard format that needs to be converted, and perform one-to-one conversion to complete the data transmission process between the corresponding sub-devices.

[0053] S4), adjusting the bandwidth parameters of the transmission channel between the two pending networks in the data transmission process, based on the specific adjustment process, so that the difference in different transmission rates of the same standard format data transmitted in the same transmission channel is minimized, wherein the specific method of adjusting is:

[0054] S41, based on the standard format determined between the two to-be-determined networks, identifying a transmission channel corresponding to the standard format, and determining a bandwidth parameter DC of the transmission channel;

[0055] S42, making two groups of standard format data synchronously transmit using the transmission channel, controlling the occupied bandwidth of one group of standard format data to gradually increase from 0, and recording different transmission rates V1q of the group of standard format data under different occupied bandwidth value states, and synchronously recording the transmission rate V2q of another group of standard format data at the same time, wherein q represents different moments;

[0056] Record the transmission rate difference Cq of two sets of standard format data at different times, where Cq = |V1q-V2q|, select the minimum value Cqmin from a number of transmission rate differences Cq, and determine the time corresponding to Cqmin;

[0057] S43, identifying the occupied bandwidth corresponding to the two groups of standard format data at this moment, and using the occupied bandwidth as the subsequent bandwidth corresponding to the standard format data;

[0058] Specifically, when data in the same standard format are transmitted between two pending networks, the same transmission channel will be used for transmission. When two standard format data are transmitted synchronously, there will be a situation of occupying network bandwidth, which may cause a group of transmission data to have a faster transmission rate and another group of transmission data to have a slower transmission rate. In this case, when the two are interacting with each other, their interaction delays will differ greatly. Therefore, in order to avoid such a situation, the occupied bandwidth of the two transmission data is limited, and the occupied bandwidth used by the two standard format data is selected, so that the transmission rates of the two standard format data can be relatively consistent when they are transmitted synchronously, thereby ensuring that when the two sub-devices are interacting with each other, their interaction delays can be reduced to a minimum, thereby ensuring the data interaction effect between the sub-devices.

[0059] Some of the data in the above formulas are dimensionless and numerically calculated. Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0060] The above embodiments are only used to illustrate the technical method of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A data transmission method for industrial Internet of Things implemented by multi-network networking, characterized in that: The following steps are involved: S1) Confirm the sub-devices that need to transmit data in the multi-network group, and based on the confirmed sub-devices, mark the network group associated with the sub-device as the pending network group, and then based on the terminal server in the pending network group, lock the transmission protocol existing in the terminal server, identify the same data format that can be used for data transmission in multiple pending networks, and mark it as the format to be converted; S2), based on the to-be-converted formats determined in each to-be-determined network, the data formats generated by the corresponding sub-devices in each to-be-determined network are calibrated as the main format, and based on the conversion rate between each main format and the to-be-converted format, the best to-be-converted format of each to-be-determined network is selected and calibrated as the standard format; S3), based on the standard format determined in each pending network, the data generated by the sub-device is format converted, and the data converted into the standard format is transmitted between the pending networks.

2. According to the data transmission method of the industrial Internet of Things implemented by multi-network networking according to claim 1, it is characterized in that: In step S1, the specific sub-steps of identifying the format to be converted are: S11. Based on the determined sub-devices, determine the pending network to which the sub-devices belong, and confirm the pending network to which each sub-device belongs one by one; S12, confirm the transmission protocols existing in the terminal servers in the to-be-determined network one by one, lock the data format that can be processed by the corresponding terminal server, and based on the multiple sets of data formats associated with each terminal server, identify whether the same data format exists in each terminal server: If it exists, the corresponding same data format is marked as the format to be converted for each pending network; If not, identify whether the same data format exists between any two groups of terminal servers. If the same data format exists, mark the same data format between the two groups of terminal servers as the to-be-converted format corresponding to the pending network. If the same data format does not exist, directly generate an error signal.

3. The data transmission method of the industrial Internet of Things realized by multi-network networking according to claim 2 is characterized in that: In step S2, the specific sub-steps of selecting the standard format in each pending network are: S21, based on the main format and the to-be-converted format determined by each to-be-determined network, identify the conversion rate when the main format is converted to the to-be-converted format from the past processing data, and then average the identified several groups of conversion rates, lock the standard average speed, and mark the standard average speed as J i-k , where i represents different pending networks and k represents different formats to be converted; S22. If the format to be converted exists in all pending networks, based on the tag k, determine the standard average speed J of the format with the same tag k in each pending network. i-k , and then the confirmed several groups of standard average speed J i-k Perform variance processing to determine the variance F of the format k to be converted k , and then the multiple groups of standard average speeds corresponding to other formats k to be converted are processed in this way in turn, and the undetermined variance F corresponding to each group of formats k to be converted is obtained k , and then select a set of minimum values ​​from the determined variances to be determined, and calibrate the format to be converted corresponding to the minimum value as the standard format of all the networks to be determined; If the format to be converted does not exist in all pending networks, identify the format to be converted determined between two pending networks: If there is only one group of the same formats to be converted, this group of formats to be converted will be used as the standard format between the two pending networks. If there are multiple groups of the same format to be converted, based on the tag k, the standard average speed J with the same tag k is determined from the corresponding two groups of pending networks. i-k , and then the confirmed several groups of standard average speed J i-k Perform variance processing to determine the variance F of the format k to be converted k , and then the two groups of standard average speeds corresponding to other formats k to be converted are processed in this way in turn, and the undetermined variance F corresponding to each group of formats k to be converted is obtained k , and then select a set of minimum values ​​from the determined pending variances, and calibrate the pending conversion format corresponding to the minimum value as the standard format between the two pending networks; The same method is then used to confirm the standard formats between the other two pending networks one by one.

4. The data transmission method of the industrial Internet of Things realized by multi-network networking according to claim 1 is characterized in that: In step S3, the specific method of converting the format of the data generated by the sub-device is: S31. If the standard formats determined by all pending networks are the same standard format, directly convert the format of the data generated by the sub-devices in each pending network, confirm the standard format data, and transmit it between several pending networks; S32. If the standard formats determined by all pending networks are not the same standard format, identify another sub-device that the sub-device needs to interact with, and identify whether the pending networks between the two sub-devices have a standard format: If it is determined that there is a standard format: the data generated by this sub-device and another sub-device are converted into a format, and the data converted into the standard format are transmitted between the two to-be-determined networks.

5. The data transmission method of the industrial Internet of Things realized by multi-network networking according to claim 4 is characterized in that: In the step S32: if no standard format is determined: a signal to be processed is generated, and an external person determines a pending network for format conversion between this sub-device and another sub-device based on the signal to be processed, and selects a standard format within the relevant pending network, converts the format of the data of the sub-devices one by one, and stops when the pending network where the other sub-device is located can be processed.

6. The data transmission method of the industrial Internet of Things realized by multi-network networking according to claim 1 is characterized in that: Also includes: S4) adjusting the bandwidth parameters of the transmission channel between the two pending networks in the process of data transmission, and based on the specific adjustment process, minimizing the difference in transmission rates of data in the same standard format transmitted in the same transmission channel.

7. The data transmission method of the industrial Internet of Things realized by multi-network networking according to claim 6 is characterized in that: In step S4, the specific manner of adjusting the bandwidth parameters of the transmission channel between the two pending networks is: S41, based on the standard format determined between the two to-be-determined networks, identifying a transmission channel corresponding to the standard format, and determining a bandwidth parameter DC of the transmission channel; S42, making two groups of standard format data synchronously transmit using the transmission channel, controlling the occupied bandwidth of one group of standard format data to gradually increase from 0, and recording different transmission rates V1q of the group of standard format data under different occupied bandwidth value states, and synchronously recording the transmission rate V2q of another group of standard format data at the same time, wherein q represents different moments; Record the transmission rate difference Cq of two sets of standard format data at different times, where Cq=|V1q-V2q|, select the minimum value Cqmin from a number of transmission rate differences Cq, and determine the time corresponding to Cqmin; S43, identifying the occupied bandwidth corresponding to the two groups of standard format data at this moment, and using the occupied bandwidth as the subsequent used bandwidth corresponding to the standard format data.

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