791results about How to "Guaranteed traceability" patented technology

The invention discloses a logistics tracking method based on a block chain. The method comprises steps that a user sending node uploads parcel information to a main node; the main node generates a digital fingerprint for the parcel information uploaded by the user sending node, writes the digital fingerprint and a corresponding time stamp into a block chain, broadcasts the block chain in all nodes; each logistics node generates parcel state information successively according to the digital fingerprint, the node information of the logistics node and the node information of a next logistics node in accordance with a parcel physical space transfer path; a corresponding user receiving node signs for the parcel, generates parcel receiving information and uploads the parcel receiving information to the main node in order for the main node to write the parcel receiving information into the block chain. The logistics tracking method applies the block chain technology to the logistics field, guarantees the traceability of the authenticity and the state of logistics information by using the unchangeable characteristic of the block chain, saves the logistics information and update state information fast and efficiently according to the characteristic of a private chain in order to satisfy a requirement for logistics instantaneity.

The embodiment of the invention discloses a commodity anti-counterfeiting method and a device. The method comprises the following steps of generating the public key and the private key of a commodity; storing the hash values of the serial number, the public key and the private key of the commodity and the circulation data of the commodity in a common database by using a block chain; upon receiving the verification information of the public key of the commodity and determining the stored state of the public key in the common database, determining the first legal sales state of the commodity according to the serial number and the circulation data of the commodity, and marking the state of the commodity to be sold out; upon receiving the verification information of the secret key of the commodity and determining the stored state of the public key corresponding to the secret key in the common database, determining the first legal verification state of the commodity according to the serial number and the circulation data of the commodity, and marking the state of the commodity to be verified. Through preparing the public key and the private key of the commodity into special two-dimension codes and pasting the special two-dimension codes onto the outer package and the surface of the commodity, the readability, the verifiability and the binding performance of anti-counterfeiting marks are ensured. Meanwhile, by means of the block chain, the commodity circulation traceability and the commodity source uniqueness are ensured. At the same time, the cost is reduced.

The invention discloses a blockchain access authentication method and device, a storage medium and an electronic device, wherein the method comprises the following steps: obtaining an access request of a first account, wherein the access request is used for the first account to request to access a service blockchain node; responding to the access request, and determining a first access authority of a role belonging to the first account based on the permission data saved on the target blockchain node, wherein the data writing permission of the target blockchain node is closed after the saved permission data are written; in the case that the first access permission indicates that the first account is allowed to access the service blockchain node, the status of the business blockchain node isset to allow the first account to access. The blockchain access authentication method and device in the present invention solve the technical problem that the security of the permission data in the related art is low.

The invention discloses a federated learning method and device based on a block chain. The method comprises the steps: determining the block chain; enabling the coordinator node to create a federatedlearning task according to the model original data sent by each participant node; receiving training data obtained by local training of the participant nodes; sending the to-be-updated parameters to other participant nodes according to the training data, so as to enable the other participant nodes to update own model parameters according to the to-be-updated parameters; and after model training iscompleted, issuing reward resources according to training data provided by each participant node in the training process, and writing rewards into the block chain. Compared with a traditional mode, the mutual trust problem of all parties is effectively solved; all parties participating in federated learning negotiate together to generate a coordinator node, so that the transparency of the processis improved; federated learning whole-process data is recorded in a block chain, so that the traceability of data operation is ensured; all parties are encouraged to actively participate through rewarding resources, and the enthusiasm of participants is improved.

The invention discloses an urban control management system based on smart street lamps, and relates to the technical field of smart cities. The smart city is constructed on the basis of the smart street lamps, interconnection and intercommunication of multiple platforms in the smart city are achieved, and repeated investment is reduced. The intelligent street lamp is a composite public infrastructure integrating multiple functions of intelligent lighting, video acquisition, mobile communication, traffic management, environment monitoring, meteorological monitoring, radio monitoring, emergencyhelp seeking, information interaction and the like, and is an important carrier for constructing a comprehensive perception network of an intelligent city.

The invention belongs to the technical field of medical data management, and relates to a medical record storage, sharing and security claim settlement model and method based on a block chain. Firstly, credible sharing of medical data of patients among medical institutions is achieved through the blockchain technology, and a lifelong medical record is established for the patients; based on a Hashchain type storage structure, the medical data cannot be tampered; secondly, an improved CP-ABE-based cryptographic primitive SHDPCPC-CP-ABE is proposed, security encryption and fine-grained access control on the medical data are realized, and a patient can conveniently and efficiently access and authorize a medical institution to read the medical data; and finally, a Paillier homomorphic encryption technology is utilized to realize safe medical insurance claim settlement, and the privacy of the patient is protected when the patient interacts with a third-party non-medical institution. According to the invention, security, confidentiality, reliability and integrity of medical data can be realized, and confidential sharing of private data is supported.

The invention discloses a supply chain finance block chain application method based on a sovereign block chain technology. The invention relates to a block chain field and especially relates to a sovereign block chain field. By using the method, problems that supply chain financing rate is low; a supply chain can not high-efficiently achieve a credit function; and a supply chain finance ecosphere cooperation development is restricted are solved. In the invention, based on the sovereign block chain technology, a block chain application platform suitable for China supply chain finance is constructed so that safety and traceability of supply chain finance application are increased. Mutual trust is established and transaction cost is reduced. Productivity of each node of a whole supply chain and a fund utilization rate are increased. A supervision node is provided for a supervision mechanism and whole process links of the supply chain finance are supervised.

The invention discloses a real estate storage and transaction method based on a block chain. The system comprises the following function modules: an audit admission module, a real estate development module, a commercial house chain entering module, a commercial house pre-selling module, a second-hand room selling module and a data storage module, according to the invention, the problem of unsmoothinformation circulation among mechanisms is solved; house property development efficiency is low, certificates are counterfeited, the house property data traceability is poor; a series of problems ofprofit-in-the-middle quotient difference, real estate dispute and the like are solved; the invention discloses a real estate transaction method. Compared with the prior art, the transaction process is simplified, the participation of the third-party intermediary is needed in the traditional real estate transaction process, the real estate certificate storage and transaction method based on the block chain can realize the direct transaction of the seller and the buyer without the third-party intermediary, the transaction cost is reduced, the transaction efficiency is improved, and the high efficiency of real estate development, auditing and transaction is realized.

The invention discloses a calibration method and a calibration system for a dust tester. The calibration system for the dust tester comprises a dust mixing device for obtaining mixed gas with uniform particle distribution, and a sampling calibration device for sampling the mixed gas to obtain first particle concentration and performing calculation processing according to the first particle concentration and second particle concentration which is obtained by detecting the mixed gas through the dust tester to be calibrated and is displayed by the dust tester to be calibrated to obtain a relative error of the dust tester to be calibrated. According to the calibration method and the calibration system for the dust tester, the accuracy and the traceability of the calibrated dust tester can be guaranteed.

The invention proposes a wireless Mesh network identity authentication method based on blockchain. The method comprises the following steps: registering with a trusted third party certification authority by a user and obtaining a digital certificate; adding a registered user to a wireless Mesh network as a user node, selecting a certain number of distributed verification nodes, broadcasting the digital certificate to the verification nodes and storing the digital certificate on the blockchain of the verification nodes; broadcasting information stored on the own blockchain of each verificationnode to all user nodes; encrypting and transmitting information between the user nodes through a public key system; after the transaction is completed, broadcasting HASH values of transaction data tothe distributed verification nodes by the user nodes; adding timestamps to the HASH values by each distributed verification node, obtaining transaction information, and saving the transaction information on the blockchain of each distributed verification node. According to the wireless Mesh network identity authentication method based on the blockchain provided by the invention, the digital certificate and the transaction information are stored on the blockchain, so that information leakage and Internet fraud are effectively solved, and the data security is guaranteed.

Disclosed is an airtightness automatic test method which includes the following steps: (1) a to-be-tested product is placed on a lower die of a test clamp module of the airtightness test system and a control module drives an upper die to descend so as to press tightly the to-be-tested product so that a sealed cavity is formed between the to-be-tested product and the lower die; (2) the control module controls a vacuum pumping and air pressure measurement module to extract air from the sealed cavity via an air extraction hole until a specified time so as to generate a negative pressure; (3) within a specific air pressure test time, air pressure changes in the sealed cavity are measured at different periods and leakage measurement values which are calculated according to current air pressure values at different time periods are compared with maximum leakage quantities which are set respectively so that the qualified rate of the to-be-tested product is controlled according to the time-slice comparison result.

The invention provides a trade tracking and account receivable financing method, system and equipment and a storage medium. The trade tracking method is performed by using the trade tracking smart contract of the block chain and comprises the steps that the trade order information is received from a trade participant; the outbound notification received from a shipper and the warehousing notification received from a receiver are recorded in the block chain; if the account receivable information is received, existence of the corresponding trade order information, the outbound notification and the warehousing notification in the block chain is judged; if the judgment result is yes, the received account receivable information is ensured to be effective, and the account receivable information and the corresponding trade order identifier are recorded in the block chain; and account receivable financing is based on the account receivable information recorded in the block chain. With application of the trade tracking and account receivable financing method, system and equipment and the storage medium, distributed storage of the trade data and the financing data is performed based on the technology of the block chain and the internet of things so that the chain entering automation and the traceability of the trade behavior and the financing behavior can be guaranteed and the safety andthe reliability can be enhanced.

The invention discloses a tobacco anti-counterfeiting and tracing method and system based on a block chain, which belongs to the technical field of anti-counterfeiting and tracing. The method includesthe following steps: S1, generating a hash value for each cigarette, generating a first identification code according to the hash value of each cigarette, and printing the first identification code on each cigarette; S2, calculating a first root hash value according to the hash value of each cigarette in a pack of cigarettes, generating a second identification code and printing the second identification code on the package box of the corresponding pack of cigarettes; S3, calculating a second root hash value according to the hash value of each pack of cigarettes in a carton of cigarettes, generating a third identification code and printing the third identification code on the package box of the corresponding carton of cigarettes; S4, calculating a third root hash value according to the hash value of each carton of cigarettes in a box of cigarettes, generating a fourth identification code and printing the fourth identification code on the package box of the corresponding box of cigarettes; and S5, calculating a fourth root hash value according to the hash value of each box of cigarettes in a batch, and writing the hash values of each cigarette, each pack of cigarettes, each carton of cigarettes, each box of cigarettes and each batch into a Merkle tree of a block chain. Thus, each cigarette, each pack of cigarettes, each carton of cigarettes, each box of cigarettes and each batchare managed in a stacked Merkle tree mode, and tobacco anti-counterfeiting and tracing is realized based on the irreversible and tamper-resistant hash values of the block chain.

The invention provides an open mobile terminal widget application platform, a realization method thereof and a server. The method comprises the following steps: receiving a software download request of a widget client with a widget application platform server; according to mobile terminal platform class information contained in the download request, selecting and sending corresponding widget client software; receiving user registration information; receiving a download request of widget application software with a specified application type; determining whether a download server stores widget application software with the application type which matches a mobile terminal platform version number contained in the above user registration information, if so, sending the widget application software. The widget application platform server can select and send the corresponding widget client software according to a registration parameter submitted by the user without restriction of a terminal type and an operating system, and a problem that a present widget application platform only can provide a service for one or few limited specific terminal platforms can be solved.

The invention discloses a machine room inspection management system and method based on a block chain. The system comprises a user management module, a mechanism management module, an equipment management module, a duty plan management module, an inspection template management module, an inspection execution management module and a statistical analysis module. According to the system, the equipment asset information is recorded through the block chain network, a check entrance is provided for a superior management mechanism, transparent management of machine room equipment assets is achieved,and downward penetration type supervision of all levels is achieved. Inspection work specifications are designed by the head office, inspection work records of personnel in the machine room are all stored in the block chain and cannot be tampered and forged by the personnel, a reliable basis is provided for performance evaluation of the personnel in the machine room and accident responsibility investigation when necessary, and the problems that the inspection work quality is difficult to guarantee and the accident responsibility investigation is difficult are avoided. The system provides a unified service cooperation platform, maintains a unified data standard, and provides a basis for diversified data analysis and statistics.

The invention belongs to the automotive wire harness assembling field and relates to a robot-based wiring harness terminal automatic plugging device and a wiring harness terminal plugging method thereof. The device comprises a material loading rotary mechanism, a multi-axis linkage robot, a wire plugging and collection clamping jaw and a visual verification work table; according to the material loading rotary mechanism, a splitter drives a rotary platform provided with tray assemblies; manual material loading is performed at a work station, the robot takes materials at a work station opposite the material loading work station; and material loading and unloading work and the wire plugging work of the robot can be performed simultaneously, and therefore, the work safety of a material loading worker can be ensured. With the robot-based wiring harness terminal automatic plugging device and the wiring harness terminal plugging method thereof of the invention adopted, fully-automatic material feeding, wiring harness terminal plugging and detection can be realized, work efficiency, precision and reliability are greatly improved, and human resource costs can be saved. According to the robot-based wiring harness terminal automatic plugging device and the wiring harness terminal plugging method thereof of the invention, a visual detection system, a tension and pressure sensor detection system and a laser diffuse reflection sensor detection system are integrated, so that the accuracy and reliability of terminal plugging can be ensured.

The invention discloses an enterprise management comprehensive evaluation system, which comprises an enterprise project management module, a human resource management module, an enterprise financial management module, a physical model building module, an enterprise comprehensive management condition evaluation module, an enterprise comprehensive management decision making module, a comprehensive management decision simulation optimization module, a virtual sensor, a human-machine operation module and a central processor. Automatic transfer of service processes between different departments and automatic statistics of cross-department data can be realized; according to different conditions, different processing decisions are made, and demands on enterprise management by related people are ensured; each decision can be simulated and analyzed, the pertinence of management decision making is greatly improved; and the financial data are subjected to double encryption processing, thereby ensuring data security.

The invention discloses a method for measuring purity values and uncertainty degrees of standard substances of phenol and hydroquinone. The method comprises the following steps: screening raw materials for purity qualification; performing qualitative confirmation on to-be-measured samples by combining a gas chromatography-mass spectrometry with a Fourier transform infrared spectroscopy; measuring the purity of the to-be-measured samples by combining three methods different in principle including a GC method, an HPLC method and a DSC method; sub-packaging the to-be-measured samples; checking uniformity and stability; calculating to obtain the uncertainty degree caused by purity measurement; calculating the uncertainty degree caused by the uniformity and the stability according to step four; and synthesizing all the uncertainty degrees to obtain a total uncertainty degree. The method provided by the invention has accurate qualification, reduces system error, adopts a strict statistical data processing method and a comprehensive uncertainty degree evaluation method, ensures accuracy, stability and traceability of measured values, and obtains high-purity standard substances of phenol and hydroquinone.

The invention discloses a deposit method oriented to a wireless radio-frequency mobile terminal. The method comprises the following steps that: (1) a depositor stores a package in a deposit unit and sends the information of the package and a receiver thereof to a deposit server through a deposit-end wireless radio-frequency mobile terminal; (2) the deposit server automatically generates an opening password of the deposit unit storing the package in the step (1), sends the opening password to a receiving-end wireless radio-frequency mobile terminal, and sends the deposit operation end information to the deposit-end wireless radio-frequency mobile terminal; and (3) the receiver receives the opening password in the step (2) according to the deposit-end wireless radio-frequency mobile terminal and takes out the package. A deposit system applied to the deposit method oriented to a wireless radio-frequency mobile terminal comprises the deposit server, a deposit cabinet, a wireless radio-frequency label, the deposit-end wireless radio-frequency mobile terminal and the receiving-end wireless radio-frequency mobile terminal. The method and system disclosed by the invention have the advantages of convenience in operation and use, simple structure, low cost and the like.