1506results about How to "Guarantee safety and reliability" patented technology

The invention discloses a blockchain-based data sharing method. The method comprises the steps of obtaining a login password input by a login user, post-validation, generating an identity certificateof the login user according to the identity information of the login user and the first digital signature, sending an identity certificate of the login user to the client, receiving an acquisition request message sent by a second node device in the blockchain after passing the authentication of the identity certificate, and performing signature verification on the second digital signature, and after the verification is passed, sending an acquisition response message to the second node device, the acquisition response message comprising a target file matched with the target file identifier anda blockchain address of the target file. In this way, the second node device can obtain the file evidence of the target file according to the block chain address, and the validity of the target file is verified accordingly. On one hand, identity authentication between mechanisms is realized based on the blockchain, and on the other hand, the safety and reliability of the data sharing process are ensured based on the tamper-proof performance of the blockchain, thereby ensuring the normal progress of the service.

The invention discloses a comprehensive test method of a small satellite power subsystem. In the method, a solar cell array is replaced by a solar matrix simulator; a ground wired test and control platform of a satellite comprehensive test system is used to transmit wired instructions and collect important parameters; and ground test and control equipment, a remote measurement and control front end and a test computer are used to transmit remote control instructions and collect remote test data. After the satellite is electrified, the on operation time, off operation time and remote control command transmission time of the solar matrix simulator are reasonably controlled, the working state of a power subsystem is set, various parameters and states are monitored and interpreted, and thus, various test items are accomplished. In addition, a method of injecting normal or fault data blocks and program blocks is adopted to test the up injection function, reliability and fault tolerance are tested. The method has high test coverage, clear and definite flow, simple and reliable operation and convenient construction.

The invention discloses an application installation control method, a related system and a related device, which are used to achieve safety management of applications on a mobile terminal. The application installation control method includes the following steps: an enterprise management client on the mobile terminal receives an installation request for an application listed in a list of applications for free installation; in case the enterprise management client is for sure configured with an application blacklist, whether the application to be installed is in the application blacklist is judged, the installation of the application is prohibited if the application to be installed is in the application blacklist, and the installation of the application proceeds if the application to be installed is not in the application blacklist; in case the enterprise management client is for sure configured with an application whitelist, whether the application to be installed is in the application whitelist is judged, the installation of the application proceeds if the application to be installed is in the application whitelist, and the installation of the application is prohibited if the application to be installed is not in the application whitelist. The invention adopting the technical scheme can effectively protect the information security of enterprises.

The invention discloses a block chain-based house lease contract processing method and system. The method comprises the following steps of obtaining a triggering action triggered by a first user, andperforming endorsement verification on an intelligent contract stored in a block chain through an endorsement verification node on the block chain according to the triggering action, wherein the intelligent contract is an intelligent contract generated according to lease contract information established between a first user and a second user; and if the intelligent contract passes the endorsementverification, executing the intelligent contract. According to the block chain-based house lease contract processing method, after a lease contract signed by a tenant and a house provider is convertedinto the intelligent contract, firstly the intelligent contract is stored, thereby performing query and authenticity check and providing data ownership affirmation and data tracing, evidence presenting and auditing; and secondly all the links of the intelligent contract are subjected to the endorsement verification, and only after the endorsement verification is passed, the intelligent contract can be executed, so that the security and reliability of the links involved by the intelligent contract are ensured.

The invention discloses a new high-resistance electrical heating alloy material and a preparation method thereof. The material comprises the following components by weight percent: 0.01-0.06% of C, 1.0-1.5% of Si, 0.1-0.6% of Mn, less than or equal to 0.02% of P, less than or equal to 0.015% of S, 20-23% of Cr, 74.0-78.0% of Ni, 0.1-0.25% of Al, 0.2-1.0% of Fe, 0.01-0.2% of Ti, 0.2-0.8% of Zr and the balance of inevitable impurities. The preparation method comprises the steps of smelting, forging, wiring, annealing, rinsing, drawing and the like. Compared with Cr20Ni80, the prepared new high-resistance electrical heating alloy material has better oxidation resistance and is an electrical heating alloy material with low thermal expansion coefficient, good high temperature strength, long service life and high resistivity.

The invention provides an assisted decision making method for load transfer in a regional power grid. The method comprises the following steps: (1) setting a target power-off device; (2) performing statistics on load information; (3) analyzing a load transfer strategy; and (4) evaluating economic safety. In the method, remote signalling, remote measuring and power grid topology information existing in a dispatching automation system are utilized fully to fastly and exactly generate a load transfer scheme capable of meeting the requirement of economic and safe operation of the power grid, thereby preventing the situations such as load shedding or long-time power off, out-of-limit overload and the like from happening during the load transfer scheme.

The invention discloses an on-line monitoring and state evaluation system for photovoltaic grid-connected power generation. The system comprises an electric quantity collection unit, an input unit, an output unit, an ARM9 data management unit, a CPLD/FPGA interface conversion unit, a temperature and illumination measuring unit and a power supply unit. According to the invention, a multi-CPU whole embedded system that is composed of an ARM 9, an ARM7, a DSP is employed, so that reliability of a measurement control unit is substantially improved and expandability is high; an FFT is used as a basic electrical energy quality measuring algorithm, high precision sampling and synchronous transmission are utilized and real-time measurement on an environmental parameter is combined; and moreover, an inter-harmonics measuring algorithm and a harmonics source positioning and responsibility distribution method are put forward; consequently, on-line and real-time monitor on an electrical energy quality and an operation state of a photovoltaic grid-connected power station comprehensively and various stable state and transient events are recorded. Therefore, it is convenient for operation staff to visually monitor the operation state of the photovoltaic grid-connected power station as well as reliable data and sufficient basis are provided for analyzing causes of a disturbance and a fault, wherein the disturbance and the fault occur in the operation; and thus the invention of on-line monitoring and state evaluation system is an important basis for realization of new energy access of a power grid.

The invention provides a high-performance low-carbon bainitic structural steel, the chemical composition of which is: C: 0.04% to 0.07%, Si: 0.20% to 0.50%, Mn: 1.50% to 1.80%, Nb: 0.03% to 0.06% %, Ti: 0.005% to 0.030%, Cr: 0.25% to 0.50%, Cu: 0.30% to 0.60%, Ni: 0.20% to 0.50%, Als: 0.010% to 0.070%, and the balance is Fe and unavoidable Impurities. The rolling process adopts TMCP+RPC process, the heating temperature before rolling is 1050-1220°C, two-stage controlled rolling is adopted, the rolling temperature in the recrystallization zone is controlled at ≥1000°C, and the rolling temperature in the non-recrystallization zone is controlled at 950°C~ (Ar3+0°C~100°C), the cumulative rolling deformation in the non-recrystallized area is greater than 50%, relax for 10-120s after rolling, and then accelerate cooling, the end cooling temperature is 380-530°C, and then air-cooled. The invention has low cost, does not need complex heat treatment, can obtain bainite structure without quenching and tempering, has high strength, high toughness, and good welding and weather resistance.

The invention discloses a method and system for testing a configuration logic design of a DCS (Distributed Control System) of a nuclear power station. The method comprises the following steps of: importing a designed configuration logic diagram to be tested into a selected minimal configuration DCS; communicatively connecting the selected minimal configuration DCS with an engineering simulation process platform; according to the preset test progress, running the configuration logic diagram to be tested on the minimal configuration DCS, and interacting data with the engineering simulation process platform, then recording a test result; and according to the test result, modifying the configuration logic diagram to be tested. According to the method and system disclosed by the invention, the configuration logic diagram is tested by using the minimal configuration DCS and the engineering simulation process platform, the correctness and completeness of the result can be virtually verified without depending on real field equipment, the debugging work period is shortened, and the safety and reliability of the design process is guaranteed.

The invention provides a rubber sealing ring and a production method thereof. The rubber sealing ring is prepared from the following components of (by weight parts): ethylene propylene diene monomer (EPDM) 80-120, carbon black 55-75, paraffin oil 15-25, indirect process zinc oxide 4-6, stearic acid 0.2-1, anti-aging agent 2-4, sulfur S-80 0.1-0.35, vulcanizing agent dicumyl peroxide (DCP) 3-5, and lubricating agent 1-3. The production method comprises the steps of: synthesizing rubber with a Banbury mixer, forming the synthetic rubber with a mixing mill, first-stage vulcanizing in a mold of a vulcanizing device, second-stage the product from the first-stage vulcanization in an oven, trimming, testing, and storing. The inventive rubber sealing ring has improved tensile strength, extensibility, tear strength, self-lubrication effect, compression and deformation resistance, heat resistance and aging resistance, good medium resistance, and prolonged service life. The inventive production method is simple and reasonable.

The embodiment of the invention provides an authentication method and apparatus based on face recognition of a mobile terminal. The method mainly comprises the following steps: when a user requires authentication, sending an authentication request to an authentication server, shooting a face picture of the user by a mobile terminal of the user, and extracting face features of the user from the face picture; comparing the face features of the user with face features of the user pre-stored in the mobile terminal or the authentication server, and judging to accept the authentication request or not by the authentication server according to a comparison result. According to the authentication method and apparatus provided by the embodiment of the invention, when the user logins in a website, the user does not need to input a username and a password just like traditional login, the user does not need to remember a lot of complex and tedious passwords, thereby facilitating the use of the user. The identity is authenticated by using the biometric technology of face recognition, thereby being difficult to counterfeit and fake, and being more secure, reliable and accurate. The security and reliability of login of the user are guaranteed.

A high-voltage big-power frequency converter without harmonic wave pollution has an energy feedback device, a precharged circuit of bypass circuit and an easily changeable air filtering net added on the existing big-power and high-voltage frequency converter of power module unit in series connection. The said energy feedback device mainly consists of the feedback bridge control circuit and the feedback bridge connected in antiparallel at the side of rectifying bridge for each power module unit, the said bypass circuit includes the precharged circuit, silicon control and diode rectifying bridge which are connected in parallel at the said of each power module unit, the said air filtering net is mainly composed of the front panel and the filtering net supporting mechanism with the front panel having air ventilation holes on it.

The invention discloses a high-resistance electrothermal alloy material, which comprises the following components in percentage by weight: 0.02 to 0.08 percent of C, 0.75 to 1.6 percent of Si, 0.1 to 0.5 percent of Mn, less than or equal to 0.02 percent of P, less than or equal to 0.015 percent of S, 20 to 23 percent of Cr, 0.1 to 0.5 percent of Al, 0.2 to 0.8 percent of Y, 0.2 to 1.0 percent of Fe, and the balance of Ni and inevitable impurities. The preparation method for the high-resistance electrothermal alloy material comprises the following steps of: smelting; forging; coiling; annealing; rinsing; mold drawing, and the like. Compared with Cr20Ni80, the high-resistance electrothermal alloy material has higher antioxidation performance, and is an electrothermal alloy material with small thermal expansion coefficient, high high-temperature strength and processability, long service life and high resistivity.

The invention discloses a cluster routing method based on a multi-factor trust mechanism developed for a wireless sensor network. The multi-factor trust mechanism is adopted for guaranteeing safety and reliability of nodes. Trust factors are selected by angles of communication, data and energy by the trust mechanism. A 'low-return and high-punishment' mechanism is adopted for preventing malicious nodes from increasing trust values rapidly through short-period lawful actions or surviving in the network in long terms by utilizing low trust values. Meanwhile, when a network topology is established, comprehensive trust values of the nodes are combined with cluster head election values and route communication cost to guarantee trusted cluster head election and trusted route selection. In the process of data transmission, the malicious nodes, selfish nodes and low-competitive nodes are removed according to the comprehensive trust values of the nodes, and thus, a safe and trusted network environment is established.

The present invention provides a comprehensive managing platform system for automatically rating the electric energy measurement, and consists of a database server, a data accessing logic layer, an automatic rating user end, a WEB server, and a system interface part. The system adopts a C/S and B/S configuration coexisting net combining method, adopts a device communication unified interface design, and connects the technologies which are irrelevant to the device with different measuring devices. The present invention can realize the standardization, the unification, and the standardization of the electric energy measuring task by five function modules of the communication interface managing function, the legal system and law application managing function, the rating work flow managing function, the rating item managing function, and the statistic searching and analyzing function, thereby ensuring the multi-machine work by one person justly and rightly according to the law.

The invention provides a control device for emergency brake of a rail vehicle and the rail vehicle. The control device comprises a brake control device, a brake control unit (BCU), an emergency brake EB loop and an emergency brake UB loop. The emergency brake EB loop comprises a first brake device and a state relay, wherein the first brake device is used for triggering the brake control device to start emergency brake or relieving the emergency brake started by triggering the brake control device through the first brake device according to execution operation input by a user, and the state relay is used for obtaining traveling state information of a train and judging whether the brake control device needs to be triggered to start emergency brake or not according to the traveling state information. The BCU is used for obtaining the deceleration of emergency brake (EB) after EB is triggered by the state relay, and the deceleration is analyzed; and if the deceleration is smaller than a preset threshold value, a brake triggering signal is sent to the emergency brake UB loop, so that the emergency brake UB loop triggers the brake control device to start emergency brake according to the brake triggering signal.

The invention discloses a heterogeneous executor cleaning recovery method and device in a mimicry switch. The method comprises the steps that a mimicry scheduler judges downlink data from a pluralityof heterogeneous executors, and marks a to-be-cleaned specified heterogeneous executor; specifying a heterogeneous execution body to restart, and then specifying the heterogeneous execution body to send a normal protocol negotiation message to try to interact with the mimicry scheduler; the mimicry scheduler detects whether the specified heterogeneous executor is in a cleaning state or not according to the protocol negotiation message, the message sending process is repeated until the state of the specified heterogeneous executor is recovered, and the mimicry scheduler is notified; and the mimicry scheduler marks that the state of the specified heterogeneous executor is normal. According to the method, under the condition that protocol stacks on the heterogeneous executors do not need to be modified, the normal working state can be quickly restored when one or more heterogeneous executors are attacked by the outside or the inside of the heterogeneous executors is abnormal, and the method has important guiding significance for the cleaning and restoring technology of the multimode heterogeneous executor architecture system.

The invention relates to a positioning device for butting a wing body, which is characterized in that the positioning device comprises three positioners for performing attitude adjustment on a part of an airplane, wherein the first positioner is placed at a support point with maximum bearing pressure on a wing and can do translation motion freely in X, Y and Z directions; the second positioner is placed at a farthest point in the X direction of the wing and can do the translation motion freely in the Y and the Z directions and do driven movement in the X direction; and the third positioner is determined according to the position of gravity center of the part of the airplane, the position of the third positioner needs to enable a connecting part for the part of the airplane to meet strength requirement, and enable the stress on each positioner to be uniform, and the third positioner can do the translation motion freely in the Z direction and do the driven movement in the X and the Y directions. The positioning system does not need multi-axis linkage, thereby simplifying the complexity of the system, simultaneously ensuring the safety and the reliability, reducing the cost, reducing the cost for manufacturing, mounting and measuring, and also reducing the cost of a foundation.

The invention provides a WebPOS system independently running based on a cloud server. The WebPOS system comprises a WebPOS system foreground module and a background management module. The WebPOS system foreground module comprises a registration module, a login module and a purchase module. A WebPOS user uses a WebPOS service by purchasing a WebPOS virtual machine after registration. The WebPOS virtual machine comprises a WebPOS client module, a background management module, an underlying database module, a WebService interface module and a POS terminal peripheral module. The WebPOS system runs in a Web browser. According to the WebPOS system, data integration of various e-commerce platforms is supported, a computer, a mobile device, an SaaS mode and an offline order function are supported, large amounts of POS purchase, maintenance and management expenses are saved for the WebPOS user, and efficient and convenient POS management, multi-platform data fusion synchronization and query functions are provided.

The invention discloses a vehicle remote control method, apparatus and system. The method comprises the following steps: step A, through encryption network connection pre-established with a server, receiving an encrypted remote control instruction sent by the server, wherein the remote control instruction is sent by a user end to the server; step B, decrypting the received encrypted remote control instruction, and successively performing effectiveness, validity and rationality verification on the decrypted remote control instruction; step C, when the effectiveness, validity and rationality verification all succeed, executing the remote control instruction; and step D, after the remote control instruction is executed, sending an instruction execution result to the server through the encryption network connection.

The invention relates to a combination valve for a high-pressure hydrogen storage cylinder, which comprises a charging check valve, a manual stop valve, an electromagnetic valve, a pressure reducing adjusting valve and a safe pressure releasing device; wherein a gas flue of a charging inlet of the hydrogen storage cylinder is provided with the check valve and the manual stop valve, a gas supply flue is educed between the two valves and supplies gas outwards through the electromagnetic valve and the pressure reducing adjusting valve; a pressure releasing gas flue is educed between the manual stop valve and the gas flue connected into the combination and releases pressure outwards through the safe pressure releasing device. As a cylinder valve is provided with the pressure reducing adjusting, considering the integration of the cylinder valve and the mensurability and output controllability of the gas, the invention can implement the low-pressure output; therefore, a gas supply output system has the very high safe reliability and simultaneously can be used as a main valve of a hydrogen storage cylinder group; other gas cylinders of the hydrogen storage cylinder group can supply gas outwards after pressure reduction through the main valve.

The invention is suitable for a field of Internet technology improvement and provides a block chain based top level domain management method. The method includes steps of A, utilizing TLD nodes to form an alliance network in a block chain; B, performing layering on a system structure in the alliance network so as to separate operation from data; C, enabling consistence among nodes in the alliancenetwork through a consensus building process. Through the simpler and more efficient consensus building process, system safety and reliability are ensured and system efficiency is improved; through structural layering on the system, system efficiency and transportability are ensured.