TWI670671B - Blockchain-based environment detection method and system thereof - Google Patents

Abstract

A method for detecting an environment based on a blockchain includes: generating sensing data corresponding to an environmental blockchain, wherein the environmental blockchain stores historical data corresponding to the sensing data; and encrypting the sensing data to generate encryption Data; decrypting the encrypted data to generate decrypted data; and adjusting an exhaustive guess of the environmental blockchain based on the amount of gradient change between the decrypted data and the historical data exceeding a first threshold.

Description

Block chain based environment detection method and system thereof

The present invention relates to a technique for recording a measured value, and more particularly to a blockchain based environment detecting method and system therefor.

As environmental awareness increases, people's supervision of environmental impact assessment becomes more and more important. In order to monitor the environment, environmentally-related organizations can use the Internet of Things (IoT) technology to obtain a large number of parameters related to environmental changes, and to analyze whether the environment changes. For example, an environmental protection agency can install a sensor related to water quality at a water outlet of a factory, and based on the data sensed by the sensor, determine whether the factory violates environmental regulations. Building a well-established Internet of Things requires the use of a large number of sensors. In the event that one cannot fully view each sensor and its associated gateway, there may be unscrupulous tampering with the sensory data in order to comply with regulations. Therefore, how to effectively protect the information in the Internet of Things from being tampered with is one of the goals that people in the field are committed to.

The invention provides a blockchain-based environment detection system, which comprises a sensor, a gateway, a management server and an environment detection blockchain server. The sensor generates sensing data corresponding to the environmental blockchain, wherein the environmental blockchain stores historical data corresponding to the sensed data. The gateway communication is connected to the sensor. The gateway receives the sensing data and encrypts the sensing data to generate encrypted data. The management server communication is connected to the gateway. The management server receives the encrypted material and decrypts the encrypted data to generate decrypted data. The environment detection blockchain server communication is connected to the management server and the environmental blockchain. The environment detection blockchain server receives the decrypted data and the historical data, and adjusts the exhaustive guess value of the environmental blockchain based on the gradient change between the decrypted data and the historical data exceeding the first threshold.

The present invention provides a blockchain-based environment detection method, including: generating sensing data corresponding to an environmental blockchain, wherein the environmental blockchain stores historical data corresponding to the sensing data; and encrypting the sensing data to Generating encrypted data; decrypting the encrypted data to generate decrypted data; and adjusting an exhaustive guess of the environmental blockchain based on the amount of gradient change between the decrypted data and the historical data exceeding a first threshold.

Based on the above, the present invention utilizes the technology of the blockchain to store the sensing data related to the environment, so that the sensing data is not easily falsified.

The above described features and advantages of the invention will be apparent from the following description.

FIG. 1 is a schematic diagram of a blockchain based environment detection system 10 according to an embodiment of the invention. The environment detection system 10 can include a sensor 101, a gateway 200, a management server 300, an environment detection blockchain server 400, a query interface 500, and a response server 600. In the environment detecting system 10, the type and number of sensors can be configured by the user according to their needs, and the present invention is not limited thereto. For example, in an embodiment, in addition to the sensor 101, the environment detecting system 10 may further include a sensor such as the sensor 102, the sensor 103, and the sensor 104.

Different types of sensors correspond to different environmental blockchains, respectively. In this embodiment, the sensor 101 is used to detect the temperature and humidity of the environment, and corresponds to the environmental blockchain A associated with the temperature and humidity sensing data, wherein the environmental block chain A is stored. Historical data corresponding to the sensing data related to temperature and humidity. The sensor 102 is a water level gauge for performing water level monitoring, and corresponds to an environmental blockchain B associated with the sensing data of the water level, wherein the environmental blockchain B stores sensing data corresponding to the water level. Historical data. The sensor 103 is an air detector for detecting air pollution, and corresponds to an environmental block chain C associated with the air pollution sensing data, wherein the environmental block chain C is stored corresponding to air pollution. Historical data of the sensory data. The sensor 104 is a radio frequency identifier (RFID) sensor for performing traffic management, and corresponds to an environmental blockchain D associated with the traffic management sensed data, wherein the environmental blockchain D Historical data corresponding to the sensing data related to traffic management is stored. For ease of explanation, the sensor 101 and its associated components will be focused on in the following embodiments, but those of ordinary skill in the art will appreciate that the description associated with the sensor 101 can also be applied to other types of sensing. (eg, sensor 102, sensor 103, and sensor 104).

The gateway 200 has a processing unit (such as a processor but is not limited thereto), a communication unit (such as various types of communication chips, a Bluetooth chip, a WiFi chip, etc. but not limited thereto) and a storage unit (eg, removable random storage) The necessary components for operating the gateway 200, such as a memory, a flash memory, a hard disk, and the like, are not limited thereto.

The gateway 200 is communicatively coupled to the sensor 101. The gateway 200 can receive the sensing data from the sensor 101 and encrypt the sensing data to generate encrypted data. Specifically, when the sensor 101 is to join the environment detecting system 10, the sensor 101 can make a registration request to the gateway 200. The sensor 101 can transmit the identity identifier built in at the factory to the gateway 200. The gateway 200 can generate a public key corresponding to the sensor 101 and a private key based on the received identity identification code. The gateway 200 can transmit the generated public key to the management server 300 through the network NW, so that the management server 300 can decrypt the data encrypted by the private key, wherein the network NW can be, for example, the Internet of Things. The invention is not limited to this. After the public key of the corresponding sensor 101 and the private key are generated, the registration procedure of the sensor 101 is completed.

Upon completion of the registration procedure of the sensor 101, the gateway 200 can begin receiving sensed data from the sensor 101. The gateway 200 can encrypt the sensing data using a private key corresponding to the sensor 101 to generate corresponding encrypted material. Next, the gateway 200 can transmit the encrypted data to the management server 300 via the network NW. In an embodiment, the gateway 200 can classify and encrypt private keys for different types and sources of sensing data.

The management server 300 has a processing unit (such as a processor but is not limited thereto), a communication unit (such as various types of communication chips, a Bluetooth chip, a WiFi chip, etc. but not limited thereto) and a storage unit (eg, removable random storage) It is necessary to run the management server 300, such as a memory, a flash memory, a hard disk, etc., but is not limited thereto.

The management server 300 is communicatively coupled to the gateway 200 via the network NW. The management server 300 can receive the encrypted material from the gateway 200 and use the public key corresponding to the sensor 101 to decrypt the encrypted material to generate decrypted material. If the decryption is successful, the encrypted data received on behalf of the management server 300 is indeed transmitted by the gateway 200. In other words, the private key used by the gateway 200 corresponds to the electronic signature of the gateway 200. After the decrypted data is generated, the management server 300 can classify and temporarily store the decrypted data. After the environment detecting blockchain server 400 establishes a block corresponding to the decrypted data on the blockchain, the decrypted data can be stored in the corresponding block.

The environment detection blockchain server 400 has a processing unit (such as a processor but is not limited thereto), a communication unit (such as various types of communication chips, a Bluetooth chip, a WiFi chip, etc., but is not limited thereto) and a storage unit (such as : Removable random access memory, flash memory, hard disk, etc., but not limited to this, etc. The operating environment detects the necessary components of the blockchain server 400.

The environment detection blockchain server 400 is communicatively coupled to the management server 300, the environmental blockchain A, the environmental blockchain B, the environmental blockchain C, and the environmental blockchain D. The environment detection blockchain server 400 can receive decrypted data from the management server 300 and receive corresponding historical data from the environmental blockchain A. The environment detection blockchain server 400 can temporarily store the decrypted data and calculate the amount of gradient change between the decrypted data and the historical data. If the gradient change exceeds a threshold, the environment sensed by the sensor 101 changes significantly, and the environment detection blockchain server 400 can adjust the exhaustive guess of the environmental blockchain A based on the gradient variation exceeding the threshold. Value (Nonce).

Specifically, the environment detection blockchain server 400 may adjust the number of bits of the exhaustive guess value of the environmental blockchain A based on the gradient variation exceeding the threshold. That is, each computing node associated with the environmental blockchain A in the network NW (which may include the gateway 200) guesses that the difficulty of guessing the exhaustive guess of the environmental blockchain A will be reduced, in other words, establishing an environmental blockchain. The time of the block on A will be shortened. In response to the time to establish a block on the environmental blockchain A is shortened, the environment detecting blockchain server 400 can store the temporarily stored decrypted material into the environmental blockchain A more frequently.

The environment detection blockchain server 400 can be established to store the decrypted data based on the exhaustive guess value of the environmental blockchain A being associated with the computing node of the environmental blockchain A (which can include the gateway 200). Block and store the decrypted data in the block of the environmental blockchain A. The Proof-of-Work (PoW) corresponding to the environmental blockchain A is increased based on the guess of the environmental blockchain A. For example, if an operation node associated with the environmental blockchain A guesses the exhaustive guess value and obtains the proof of the workload, the operation node can transmit the information related to the proof of the workload to the environment detection block. Chain server 400. The environment detection blockchain server 400 can receive the workload proof associated with the environmental blockchain A and perform an accumulated calculation on the workload proof.

In an embodiment, the environmental blockchain A may store a smart contract corresponding to the proof of workload, and the smart contract may be triggered based on the proof of the workload exceeding a threshold. For example, assume that the sensor 101 is a thermometer and hygrometer. When the temperature and humidity sensed by the sensor 101 change significantly, the environment detection blockchain server 400 will lower the number of bits of the exhaustive guess value of the environmental blockchain A, so that the sensor 101 senses The sensing data can be recorded to the newly created block of the environmental blockchain A more frequently, and the workload proof of the environmental blockchain A will also be generated along with the block of each sensing data. increase. If the workload corresponding to the environmental blockchain A proves to continue to increase, the environment detection blockchain server 400 is triggered to execute the content described in the smart contract.

The query interface 500 is communicatively coupled to the management server 300. The query interface 500 can send an alert message in response to the smart contract being triggered. Specifically, the user can query the information associated with the environmental blockchain A through the query interface 500, such as sensing data, historical data, and the like. The query interface 500 can be, for example, a Human-Machine Interface (HMI) or a User Interface (UI) controlled by a software module, and the present invention is not limited thereto. When the smart contract in the environmental blockchain A is triggered, the management server 300 can receive the alert message related to the smart contract from the environment detecting blockchain server 400. The query interface 500 can receive the alert message from the management server 300 and send a corresponding alert message.

The reaction server 600 has a processing unit (such as a processor but is not limited thereto), a communication unit (such as various types of communication chips, a Bluetooth chip, a WiFi chip, etc. but not limited thereto) and a storage unit (eg, removable random storage) It is necessary to operate the response server 600, such as a memory, a flash memory, a hard disk, etc., but is not limited thereto.

The response server 600 is communicatively coupled to the environmental detection blockchain server 400. The response server 600 can control the terminal devices associated with the environmental blockchain A in response to the smart contract in the environmental blockchain A being triggered. Specifically, when the smart contract in the environmental blockchain A is triggered, the environment detecting blockchain server 400 can send a corresponding message to the response server 600. The response server can control the terminal device associated with the environmental blockchain A in response to receiving the message. For example, if the environmental blockchain A is associated with temperature and humidity, the terminal device may be, for example, a terminal device associated with temperature and humidity, such as a warmer, an air conditioner, a dehumidifier, or a humidifier. When the sensor 101 senses that the humidity is drastically lowered and the smart contract in the environmental blockchain A is triggered, the response server 600 can trigger the heater release according to the content recorded in the smart contract in response to the smart contract being triggered. Warmer to increase the temperature.

FIG. 2 is a flowchart of a method for detecting an environment based on a blockchain according to an embodiment of the present invention. The environment detection method may be implemented by the environment detection system 10. In step S21, sensing data corresponding to the environmental blockchain is generated, wherein the environmental blockchain stores historical data corresponding to the sensing data. In step S22, the sensing data is encrypted to generate encrypted data. At step S23, the encrypted material is decrypted to generate decrypted material. In step S24, the exhaustive guess value of the environmental blockchain is adjusted based on the amount of gradient change between the decrypted data and the historical data exceeding the first threshold.

In summary, the present invention utilizes the technology of the blockchain to store sensing data related to the environment, so that the sensing data is not easily falsified, thereby ensuring safe and reliable storage of the sensing data. Furthermore, the present invention can adjust the difficulty of establishing a block based on the amount of gradient variation of the environment. When there is a significant change in the environment, the present invention can speed up the generation of blocks to record the relevant sensing data of the current environment in more detail. On the other hand, the present invention can utilize the blockchain workload proof mechanism to trigger the smart contract, and trigger the smart contract to alert the manager or control the terminal device used to change the environment.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.

10‧‧‧Environmental Detection System

101, 102, 103, 104‧‧‧ sensors

200‧‧‧ gateway

300‧‧‧Management Server

400‧‧‧Environmental Detection Blockchain Server

500‧‧‧Query interface

600‧‧‧Response server

A, B, C, D‧‧‧ environmental blockchain

NW‧‧‧Network

S21, S22, S23, S24‧‧ steps

FIG. 1 is a schematic diagram of a blockchain based environment detection system according to an embodiment of the invention. FIG. 2 is a flowchart of a method for detecting an environment based on a blockchain according to an embodiment of the invention.

Claims (9)

A blockchain-based environment detection system includes: a sensor that generates sensing data corresponding to an environmental blockchain, wherein the environmental blockchain stores historical data corresponding to the sensing data; a gateway device, Communicating to the sensor, the gateway receiving the sensing data, and encrypting the sensing data to generate encrypted data; managing a server, the communication is connected to the gateway, and the management server receives the encryption Data, and decrypting the encrypted data to generate decrypted data, wherein the gateway stores a private key corresponding to the sensor, and the management server stores a public key corresponding to the sensor, wherein the gateway Using the private key to encrypt the sensing data to generate the encrypted data, and the management server uses the public key to decrypt the encrypted data to generate the decrypted data; and the environment detecting blockchain server, communication Connecting to the management server and the environment blockchain, the environment detection blockchain server receives the decrypted data and the historical data, and based on the decrypted data and the historical data Gradient change amount between the value exceeds a first threshold value is adjusted to be exhaustive guessing the environment block chain. The environmental detection system of claim 1, wherein the environment detection blockchain server is based on the gradient change amount greater than the first threshold value and the bit of the exhaustive guess value of the environmental blockchain The number is lowered. The environmental detection system of claim 1, wherein the environment detection blockchain server stores the decrypted data in the environmental blockchain based on the exhaustive guess value being guessed. The environmental detection system of claim 3, wherein the workload proof corresponding to the environmental blockchain is increased based on the guess of the exhaustive guess. The environmental detection system of claim 4, wherein the environmental blockchain stores a smart contract, and the smart contract is triggered based on the workload proof exceeding a second threshold. The environmental detection system of claim 5, further comprising: a query interface, the communication is connected to the management server, and the query interface sends an alert message in response to the smart contract being triggered. The environmental detection system of claim 5, further comprising: a response server connected to the environment detection blockchain server, wherein the response server is triggered in response to the smart contract being triggered The terminal device of the environmental blockchain. The environmental detection system of claim 1, wherein the environmental blockchain corresponds to one of temperature and humidity, water level monitoring, air pollution, and traffic management. A method for detecting an environment based on a blockchain, comprising: generating sensing data corresponding to an environmental blockchain, wherein the environmental blockchain stores historical data corresponding to the sensing data; generating a public key and a private key; The private key encrypts the sensing data to generate encrypted data; decrypting the encrypted data using the public key to generate decrypted data; and based on the gradient change between the decrypted data and the historical data exceeding a first threshold The value is adjusted to the exhaustive guess of the environmental blockchain.