38results about How to "With traceability" patented technology

The invention discloses a decentralized Internet of Things data transaction system, which is implemented based on a block chain network. The Internet of Things data provider publishes the information of tradable data to the block chain network through a smart contract, and realizes the transaction based on a smart contract. Automatic point-to-point data transactions, the data supplier obtains the digital certificate and delivers the data, and the system records the execution result in the blockchain ledger. Among them, the data supplier only acts as a data provider, and the data demander only acts as a data demander, and neither acts as an accounting node on the blockchain network. The decentralized Internet of Things data transaction system proposed by the present invention is a high-efficiency, high-quality, and short-cycle Internet of Things data transaction method based on blockchain technology, which can realize the security of Internet of Things data generated by users (terminal devices) , Paid, and quickly used by the demand side, to achieve the purpose of ensuring the fairness of the data supply and demand sides and the legal and compliant use of IoT data through technical means.

The invention relates to the casting field, particularly to a positioning method for manufacturing of a cartridge receiver support plate. Three positioning bosses A1, A2, and A3 are arranged at one side of a blade body of a cartridge receiver support plate, wherein the three positioning bosses A1, A2, and A3 are distributed in a three-point positioning mode; a positioning boss is arranged at a positioning point B1 located at the upper side of the mounting edge of one side of the blade body, a positioning boss is arranged at a positioning point B2 located at the lower side of the mounting edge of one side of the blade body, and a positioning boss is arranged at a positioning point C1 located at the back of a flange of the cartridge receiver support plate. Blade positioning is realized by using the three positioning bosses A1, A2, and A3 as the main primary references; the axial height dimension is localized by using the positioning bosses B1 and B2 as auxiliary positioning points; and the circumferential dimension is localized by using the positioning boss C1 as the auxiliary reference positioning point. According to the invention, six positioning bosses are manufactured at the parts like the support plate blade body and the mounting edge and the like and are used as the unique reference system for dimension measurement, mechanical processing, and cartridge receiver welding; reference unification of all procedures can be realized; the support plate dimension can be measured rapidly and accurately; and processing, welding, positioning, and installation can be realized conveniently.

The present invention relates to a preparation method of self-traceable grating standard substance that accurately shortens the pitch value. The method is based on laser convergence atomic deposition technology and soft X-ray interference lithography technology, and prepares small-pitch traceable standard substance with a scale of 100 nanometers or less, including The following steps: 1) Obtain a mask plate substrate; 2) Use laser convergent atom deposition technology to deposit and prepare a mask plate on the mask plate substrate; 3) Obtain a photoresist sample, the photoresist sample includes photoresist and the second substrate; using a mask plate, through soft X-ray interference lithography technology, the photoresist is exposed and developed to obtain a photoresist grating structure; 4) transferring the photoresist grating structure to the second substrate On, obtain the self-traceable grating standard substance. Compared with the prior art, the self-traceable grating standard substance prepared by the invention has the advantages of high precision, traceability, accurate shortening of pitch value and the like.

The invention discloses a communication method between router nodes, comprising: customizing the selection of the first transaction data in the standard OSPF work flow, so that it becomes the second transaction data matched with the block chain communication; The standard OSPF workflow performs secondary configuration of each node, so that the second transaction data between the nodes cooperates with each other and realizes synchronization; based on the blockchain communication workflow, the corresponding block is generated for the second transaction data, and each node After verification, it is added to the blockchain. The invention provides a communication method between router nodes, which innovates and improves the timing of sending or receiving transaction data and integrates standard OSPF and blockchain processes, which only modifies the standard blockchain process without modifying the OSPF standard process , to ensure compatibility with existing protocols and interoperability with existing networks.

The invention discloses a file security control and trace method and system based on digital fingerprints. The method includes the file uploading procedure and the file downloading procedure. In the file uploading procedure, when a user uploads files to a file server, the file server starts a natural language analysis program and conducts full-context scanning and matched analysis on file contexts, a position where the digital fingerprints can be inserted is found, a fingerprint feature position list is generated, the fingerprint feature position list and original files are stored in the file server together, the uploading and downloading record list is generated, and information uploaded this time is recorded. In the file downloading procedure, when the user sends a file downloading request to the file server, the file server generates binary random codes with the same length according to the length of the fingerprint feature position list, when the random code corresponding position is 1, the digital fingerprints are inserted in the contexts at the corresponding position, a new file is generated and sent to the user, and meanwhile the downloaded information is recorded in the uploading and downloading record list. By means of the method and system, the context files can be traced back, and the security of the context files is managed.