CN115038058A - Regional ad hoc network data transmission method, system and device based on block chain - Google Patents

Abstract

The invention discloses a blockchain-based regional ad hoc network data transmission method, system and device, belonging to the technical field of blockchain data security transmission, including establishing an emergency environment monitoring system, deploying and installing acquisition nodes and relays in a target area Nodes and gateway nodes, let the collection nodes, relay nodes and gateway nodes establish communication connections, and use blockchain technology to establish data transmission between nodes, so that the collection nodes, relay nodes and gateway nodes, and between nodes at the same level They all use blockchain technology for data transmission. The gateway node performs high-precision static calculation on the data information, obtains the environmental monitoring result data, and sends the result data to the control background in the Beidou short message communication format through the Beidou satellite, and the control background is real-time. By monitoring the received Beidou short message communication information, the present invention can verify and screen abnormal data multiple times through the multi-layer blockchain, so that the generated environmental monitoring result data is safe and reliable.

Description

A method, system and device for data transmission based on blockchain regional ad hoc network

technical field

The invention belongs to the technical field of blockchain data security transmission, and in particular relates to a method, system and device for data transmission based on a blockchain regional ad hoc network.

Background technique

At present, for emergency scenarios such as natural or man-made disasters, it is usually necessary for the operator's emergency support vehicle to build a micro-communication base station on site to realize the access of mobile users through wireless technology, but the base station and the support vehicle need to maintain a wired connection within a certain distance. The reliability of the communication link is ensured by continuous power supply, which has application limitations. Therefore, in order to arrange and install the acquisition equipment in advance in the disaster area, when the disaster occurs, the environmental conditions of the target area are obtained through the acquisition equipment. The received data is sent out for disaster relief personnel to make disaster response strategies.

However, in this case, it is easy to cause damage to the equipment due to drastic changes in the surrounding environment of the acquisition equipment when a disaster occurs, thus affecting the transmission of data. This greatly reduces the security and reliability of the data, resulting in the inability to make correct processing results for the disaster-stricken area based on the collected data.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is: in view of the existing problems that the equipment is damaged due to the drastic changes in the surrounding environment of the collection equipment when the disaster occurs, the transmission of data is affected, and the security and reliability of the data are affected. The invention provides a data transmission method, system and device based on a blockchain area ad hoc network.

The technical scheme of the present invention is: a data transmission method based on a blockchain area ad hoc network, using the following steps:

Step 1: Deploy and install the collection node, relay node and gateway node in the target collection area, and pre-write the label code for each node;

Step 2: Each collection node, relay node and gateway node is installed and connected to a blockchain data center module, and at the same time, a multi-layer blockchain network communication connection and a blockchain database are established between the nodes, using blockchain technology Establish data transmission between nodes;

Step 3: The collection node collects surrounding environmental data, establishes a collection layer blockchain network, presets the communication range of the collection node, and the collection node sends the collected data to other collection nodes within the preset range through the collection layer blockchain network, When the preset time is reached, the collection node will send the data collected and received within the preset time range to all relay nodes within the preset range;

Step 4: The relay node judges and filters the data information sent by the collection node, establishes a relay layer blockchain network, presets the communication range of the relay node, and sends the filtered data to the network through the relay layer blockchain network. For other relay nodes within the preset range, the relay node performs a second judgment and screening on the data sent by other relay nodes. When the preset time is reached, the relay node will receive and filter the data within the preset time range. Send to all gateway nodes within the preset range;

Step 5: The gateway node judges and filters the data information sent by the relay node, establishes a gateway layer blockchain network, presets the communication range of the gateway node, and sends the filtered data to the preset range through the gateway layer blockchain network other gateway nodes in the network, the gateway node performs a second judgment and screening on the data sent by other gateway nodes, and when the preset time is reached, the gateway node performs high-precision static calculation on the data received and filtered within the preset time range, Obtain the environmental monitoring result data, and send the result data to the Beidou satellite in the communication format of Beidou short message;

Step 7: The Beidou satellite forwards the result data sent by the gateway node to the control background, and the control background monitors the received Beidou short message communication information in real time.

Preferably, the collection node includes a sensor module, a main controller module and a wireless communication module; the relay node includes a main controller module and a wireless communication module; the gateway node includes a wireless communication module, a main controller module and a Beidou Short message module.

Further, the wireless communication modules all adopt network communication modules based on LoRa technology.

Preferably, the collection node will save the collected and received collection data in its own blockchain database, and the relay node will save the received and twice judged and screened data in its own blockchain database , the gateway node will save the received data, the data of the two judgments and screening, and the result data of the static solution in its own blockchain database.

Preferably, each collection node is connected to at least two relay nodes through the blockchain network communication within the preset communication range of the collection node; The blockchain network communication connection has two gateway nodes.

Preferably, the relay node and the gateway node judge and filter the collected data by comparing the data according to the label code written in step 1 and the time stamp of the collected data, and remove anomalies from the collected data with the same code and time stamp data.

Further, the gateway node and the relay node also perform a scoring operation on the relay node and the collection node through the Byzantine fault-tolerant algorithm, and establish a collection data scoring table for the relay node and the collection node. When the abnormal data from the node has a high proportion. At the preset threshold, the node is judged as an abnormal node, and the judgment result is forwarded to other nodes through the blockchain network, so that the nodes in the blockchain network refuse to receive the data sent by the node.

Preferably, the data transmission among the collection node, the relay node and the gateway node adopts an asymmetric encryption algorithm to encrypt the data.

A data transmission system based on a blockchain regional ad hoc network, comprising:

The data acquisition module is used to collect the surrounding environmental information data;

The data transport module is used to establish a blockchain connection and send data to other data transport modules within the communication range of the blockchain;

The data storage module is used to save and update the data sent by the data transport module;

The relay screening module is used to integrate and screen the data sent by the data transport module;

The gateway short message module is used to perform high-precision static calculation on the data, obtain the environmental monitoring result data, and transfer the result data to the communication format of the Beidou short message;

The satellite communication module is used to send Beidou short messages generated by the gateway short message module.

A data transmission device based on a blockchain area ad hoc network, characterized in that the device includes a service processor and a distributed memory, the service processor is connected to the memory, and the distributed memory stores a service self-management program , configured to store machine-readable instructions, the service processor executes the service self-management program, and the instructions, when executed by the processor, implement the above-mentioned blockchain-based regional ad hoc network data transfer method.

A data transmission method, system and device based on a blockchain-based regional ad hoc network, by allowing a collection node to collect environmental data in a disaster-stricken area, forward the collected data to a gateway node through a relay node, and the gateway node generates environmental monitoring results , and then convert the environmental monitoring results into the communication format of Beidou short messages, and then send them to the control background through Beidou satellites, so that a multi-level blockchain network communication connection can be established between the acquisition nodes, relay nodes and gateway nodes. Blockchain technology is used for data transmission between nodes, and the abnormal data in the data transmission process is judged and screened by blockchain technology. security and reliability.

Compared with the prior art, the beneficial effects of the present invention are:

(1) By establishing a multi-layer blockchain network communication connection, the present invention not only allows data transmission between acquisition nodes, relay nodes and gateway nodes to use blockchain technology, but also uses blockchain technology to perform data transmission between nodes at the same level. For data transmission, abnormal data is verified and screened multiple times through multi-layer blockchains. Through blockchain decentralized connections, point-to-point communication connections are established to improve the communication efficiency between nodes, ensure data security, and allow the final gateway node. The generated environmental monitoring result data is more secure and reliable;

(2) The present invention collects the environmental conditions of the disaster-affected area through a plurality of collection nodes, and a relay node is arranged between the collection node and the gateway node, so that the relay node can perform preliminary integration processing on the environmental data information collected by the collection node, reducing the The amount of data received by the gateway node, so that the gateway node can better perform high-precision static calculation of the data;

(3) The communication between each node of the present invention adopts the LoRa communication module, which has a longer wireless radio frequency communication distance under the condition of low power consumption, and has a higher capacity at the same time, and one LoRa gateway can be connected to multiple LoRa at the same time. Nodes can meet the data transmission requirements based on blockchain technology.

Description of drawings

In order to illustrate the technical solutions in the embodiments or examples of the present application more clearly, the following briefly introduces the drawings that are used in the embodiments or the example descriptions. Obviously, the drawings in the following description are only the Therefore, some embodiments of the application should not be regarded as limiting the scope. For those of ordinary skill in the art, other drawings can also be obtained according to the drawings without creative efforts. .

Fig. 1 is the step schematic diagram of the present invention;

2 is a schematic diagram of the hardware structure of a collection node of the present invention;

3 is a schematic diagram of the hardware structure of a gateway node of the present invention;

4 is a schematic diagram of the system structure of the present invention;

5 is a schematic diagram of the device structure of the present invention;

FIG. 6 is a schematic diagram of the flow structure of the present invention.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments The components of the embodiments of the present application, which are some, but not all, of the embodiments of the present application generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.

Accordingly, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the present application, based on the embodiments in the present application, All other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

Example 1

As shown in Figure 1, a data transmission method based on the blockchain area ad hoc network, the specific process is as follows:

Establish an emergency environmental monitoring system, deploy and install collection nodes, relay nodes and gateway nodes in the target area, and let the collection nodes, relay nodes and gateway nodes establish communication connections, and the connection between collection nodes and relay nodes is a star network Topological structure, the connection between the relay node and the gateway is a linear network topology structure, each collection node, relay node and gateway node are installed and connected with a blockchain data center module, and multi-layer blocks are established between the nodes. Chain network communication connection and blockchain database, using blockchain technology to establish data transmission between nodes.

Establish a collection layer blockchain network, preset the communication range of the collection nodes, each collection node has at least two relay nodes connected through the blockchain network communication within the preset communication range of the collection nodes, and the collection nodes will themselves in the preset communication range. The data information collected within the time range is sent to all collection nodes within its own communication range. The collection nodes include sensor modules, main controller modules and wireless communication modules. The sensor modules include temperature and humidity sensors, pressure sensors, light sensors, and the main controller. The module is a low-power control unit, including a processor and memory. The wireless communication module adopts a communication module based on LoRa technology. When the preset time is reached, the acquisition node will send the data collected and received within the preset time range to the preset time. All relay nodes within the range, the collection node will save the collected and received collection data in its own blockchain database.

A relay layer blockchain network is established, and the communication range of the relay nodes is preset. Each relay node is connected to two gateway nodes through the blockchain network communication within the preset preset communication range of the relay nodes. Judge and screen all data information sent by the acquisition node, and then send the filtered data information to all relay nodes within its own communication range. The relay nodes include the main controller module and the wireless communication module. The data sent by other relay nodes are integrated and screened. The judgment and screening method adopts the method of minority obeying the majority. A few abnormal data are removed, and the same data is integrated and retained. When the preset time is reached, the relay node will The data received and screened within the set time range is sent to all gateway nodes within the preset range, and the relay node will save the received and twice judged and screened data in its own blockchain database.

Establish a gateway layer blockchain network, preset the communication range of the gateway node, the gateway node judges and filters all the data information sent by the relay node, and sends the filtered data information to its own communication range through the gateway layer blockchain network All gateway nodes in The data sent by other gateway nodes is integrated and filtered. When the preset time is reached, the gateway node performs high-precision static calculation on the data received and filtered within the preset time range to obtain environmental monitoring result data. The gateway node It will save the received data, the data of two judgments and screening, and the result data of static solution in its own blockchain database, and send the result data to the control background through Beidou satellite in the communication format of Beidou short message.

As shown in Figure 2, the acquisition node is selected based on the Contex-M core as the main control chip. The main control chip integrates floating-point operation instructions and digital signal processing instructions, with 128MB of static random access memory, 1024kB of flash memory, 112 general-purpose Input/output (Input/Output, IO) ports and other rich device resources, and select standby mode as the low power consumption mode of the device.

As shown in Figure 3, at the same time, in order to achieve the purpose of easy networking and long-distance communication, the wireless communication module can choose AS62-T30 of Zeyao Technology, which is developed based on the SX1278 RF chip of Semtech Company, and the working frequency band is 410~ 441MHz LoRa spread spectrum transmission serial data transmission module, the reference communication distance is 8km, in practical application the working distance can reach 10km, and with forward error correction function, in addition, AS62-T30 also supports LoRaWAN protocol, can build LoRa star Network Topology.

The Beidou short message module selects the ultra-small satellite radio positioning system (RDSS) transceiver board. The transceiver board integrates the Beidou radio frequency transceiver chip, power amplifier circuit and baseband circuit, etc., which not only realizes the Beidou RDSS transceiver function and positioning function, but also facilitates The handheld emergency terminal displays and analyzes the geographic location of each node in real time.

The control background monitors the received Beidou short message communication information in real time. Through the control background, the staff can obtain the immediate and accurate disaster situation and environmental changes in the disaster area, and timely formulate rescue and disaster relief plans.

It can be seen from the above description that in this example, the collection node collects the environmental data of the disaster-stricken area, and the collected data is forwarded to the gateway node through the relay node. The gateway node generates the environmental monitoring results, and then converts the environmental monitoring results into The communication format of the Beidou short message is sent to the control background through Beidou satellites, so that the disaster relief personnel can obtain the environmental conditions of the disaster-affected area at the first time, and can make corresponding decisions, not only allowing the acquisition node, relay node and gateway node to communicate. Blockchain technology is used for data transmission between nodes, and blockchain technology is also used for data transmission between nodes at the same level. The abnormal data is verified and screened multiple times through multi-layer blockchains, so that the environment generated by the final gateway node can be monitored. As a result, the data is more reliable, and in disaster areas where the cellular mobile network is paralyzed or blocked, Beidou short messages can be used to solve the problem of emergency communication.

Example 2

A data transmission method based on a blockchain regional ad hoc network, the implementation steps are basically the same as those in Embodiment 1, and further, the data transmission between the collection node, the relay node and the gateway node adopts an asymmetric encryption algorithm. The data is encrypted, and the gateway node and the relay node also use the Byzantine fault-tolerant algorithm to score the relay node and the acquisition node, and establish a score table for the collected data for the relay node and the acquisition node. When the proportion of abnormal data coming from the node is higher than When the threshold is preset, the node is judged as an abnormal node, and the judgment result is forwarded to other nodes through the blockchain network, so that the nodes in the blockchain network refuse to receive the data sent by the node

Example 3

As shown in Figure 4, a data transmission system based on a blockchain regional ad hoc network includes:

The data acquisition module is used to collect the surrounding environmental information data;

A data transport module for sending data to other data transport modules within the communication range;

The data storage module is used to save and update the data sent by the data transport module;

The relay screening module is used to integrate and screen the data sent by the data transport module;

The gateway short message module is used to perform high-precision static calculation on the data, obtain the environmental monitoring result data, and transfer the result data to the communication format of the Beidou short message;

The satellite communication module is used to send Beidou short messages generated by the gateway short message module.

It can be seen from the above description that in this example, each data acquisition module, data storage module, relay screening module and gateway short message module are connected to the data transport module, and the environmental data collected by the data acquisition module is In the data acquisition module, the blockchain transmission is carried out, and then the data is transported to the relay screening module, so that the data can be transmitted in the blockchain between different relay screening modules, and the data is also integrated and screened while the data is transported. , the filtered data is transported to the gateway short message module, and the gateway short message module also transmits data through blockchain technology. Finally, the data is calculated to achieve the environmental monitoring results, and the results are reported as Beidou short messages. The communication format of the text is sent to the disaster relief personnel through the satellite communication module, so that the disaster relief personnel can obtain the environmental conditions of the disaster area at the first time.

Example 4

As shown in FIG. 5, a data transmission device based on a blockchain area ad hoc network is characterized in that, the device includes a service processor and a distributed memory, the service processor is connected to the memory, and the distributed memory is A service self-management program is stored, configured to store machine-readable instructions, the service processor executes the service self-management program, and the instructions, when executed by the processor, implement the one described in Embodiment 1. Data transmission method based on blockchain regional ad hoc network.

It can be seen from the above description that in this example, the collection node collects the environmental data of the disaster-stricken area, and the collected data is forwarded to the gateway node through the relay node. The gateway node generates the environmental monitoring results, and then converts the environmental monitoring results into The communication format of the Beidou short message is sent to the control background through Beidou satellites, so that the disaster relief personnel can obtain the environmental conditions of the disaster-affected area at the first time, and can make corresponding decisions, not only allowing the acquisition node, relay node and gateway node to communicate. Blockchain technology is used for data transmission between nodes, and blockchain technology is also used for data transmission between nodes at the same level. The abnormal data is verified and screened multiple times through multi-layer blockchains, so as to solve the problem that the disaster-affected area cannot be accurately obtained. The problem.

The above-mentioned embodiments only represent the preferred embodiments of the present invention, and the descriptions thereof are specific and detailed, but should not be construed as limiting the scope of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications, improvements and substitutions can be made, which all belong to the protection scope of the present invention.

Claims (10)

1. A block chain based regional ad hoc network data transmission method is characterized by comprising the following steps:

step 1: deploying and installing acquisition nodes, relay nodes and gateway nodes in a target acquisition area, and writing label codes into each node in advance;

and 2, step: each acquisition node, each relay node and each gateway node are respectively provided with a block chain data center module, a multi-layer block chain network communication connection and a block chain database are established among the nodes, and data transmission among the nodes is established by adopting a block chain technology;

and step 3: the method comprises the steps that a collection node collects surrounding environment data, a collection layer blockchain network is established, a collection node communication range is preset, the collection node sends collected data to other collection nodes in the preset range through the collection layer blockchain network, and when the preset time is reached, the collection node sends the data collected and received in the preset time range to all relay nodes in the preset range;

and 4, step 4: the method comprises the steps that a relay node judges and screens data information sent by an acquisition node, a relay layer blockchain network is established, a relay node communication range is preset, the screened data are sent to other relay nodes in the preset range through the relay layer blockchain network, the relay node carries out secondary judgment and screening on the data sent by other relay nodes, and when the preset time is reached, the relay node sends the data received and screened in the preset time range to all gateway nodes in the preset range;

and 5: the method comprises the steps that a gateway node judges and screens data information sent by a relay node, a gateway layer area block chain network is established, the communication range of the gateway node is preset, the screened data are sent to other gateway nodes in the preset range through the gateway layer area block chain network, the gateway node carries out secondary judgment and screening on the data sent by other gateway nodes, when the preset time is reached, the gateway node carries out high-precision static resolving on the data received and screened in the preset time range to obtain environment monitoring result data, and the result data are sent to a Beidou satellite in the communication format of a Beidou short message;

and 7: and the Beidou satellite forwards the result data sent by the gateway node to the control background, and the control background monitors the received Beidou short message communication information in real time.

2. The block chain based regional ad hoc network data transmission method according to claim 1, wherein: the acquisition node comprises a sensor module, a main controller module and a wireless communication module; the relay node comprises a main controller module and a wireless communication module; the gateway node comprises a wireless communication module, a main controller module and a Beidou short message module.

3. The block chain based regional ad hoc network data transmission method according to claim 2, wherein: the wireless communication modules all adopt network communication modules based on the LoRa technology.

4. The block chain based regional ad hoc network data transmission method according to claim 1, wherein: the acquisition node stores acquired and received data in a block chain database of the acquisition node, the relay node stores received and twice-judged and screened data in the block chain database of the relay node, and the gateway node stores the received data, the twice-judged and screened data and static calculation result data in the block chain database of the gateway node.

5. The block chain based regional ad hoc network data transmission method according to claim 1, wherein: each acquisition node is at least in communication connection with two relay nodes through a block chain network within a preset acquisition node communication range; each relay node is in communication connection with two gateway nodes through a block chain network within a preset relay node communication range.

6. The block chain based regional ad hoc network data transmission method according to claim 1, wherein: and the judgment and screening of the relay node and the gateway node on the acquired data are to compare the data according to the label codes written in the step 1 and the time stamps of the acquired data and remove abnormal data from the acquired data with the same codes and time stamps.

7. The block chain based regional ad hoc network data transmission method according to claim 6, wherein: the gateway node and the relay node also perform scoring operation on the relay node and the acquisition node through a Byzantine fault-tolerant algorithm, an acquired data scoring table is established for the relay node and the acquisition node, when the proportion of abnormal data from the node is higher than a preset threshold value, the node is judged to be an abnormal node, and the judgment result is forwarded to other nodes through the block chain network, so that the nodes in the block chain network refuse to receive the data sent by the node.

8. The block chain based regional ad hoc network data transmission method according to claim 1, wherein: data transmission among the acquisition node, the relay node and the gateway node adopts an asymmetric encryption algorithm to encrypt the data.

9. A block chain based regional ad hoc network data transmission system, comprising:

the data acquisition module is used for acquiring surrounding environment information data;

the data transportation module is used for establishing block chain connection and sending data to other data transportation modules within the communication range of the block chain;

the data storage module is used for storing and updating the data sent by the data transportation module;

the relay screening module is used for integrating and screening the data sent by the data transportation module;

the gateway short message module is used for performing high-precision static calculation on the data to obtain environment monitoring result data and transmitting the result data to the communication format of the Beidou short message;

and the satellite communication module is used for sending the Beidou short message generated by the gateway short message module.

10. An apparatus for block chain based regional ad hoc network data transmission, the apparatus comprising a service processor and a distributed memory, the service processor being connected to the memory, the distributed memory storing a service self-management program configured to store machine readable instructions, the service processor executing the service self-management program, the instructions when executed by the processor implementing a block chain based regional ad hoc network data transmission method according to claims 1-8.

Images