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32results about How to "The data is real and effective" patented technology

Crack-substrate coupling flow damage evaluating device and method by simulating formation conditions

ActiveCN105756674AIntuitive simulation of damage processSimulated damage process is clearBorehole/well accessoriesElectrical resistance and conductanceRock core
The invention discloses a crack-substrate coupling flow damage evaluating device and method by simulating formation conditions. The device mainly consists of a kettle body 4, a rock core 1, a crack 6, a simulated well 7, a pressurized capsule 3, a resistance probe 16, a pressure sensor 18, a data collecting system 17 and a work liquid circulation system, wherein the rock core 1 is arranged in the kettle body 4; the pressurized capsule 3 wraps the periphery of the rock core; the kettle body is provided with an axial pressure injecting opening, a peripheral pressure injecting opening and a gas inlet; the crack 6 and the simulated well 7 are arranged in the rock core; nine drilling holes extending into the rock core are distributed in the rock core; the resistance probe 16 is arranged in the drilling holes; the resistance probe 16 is connected with the pressure sensor 18; the resistance probe and the pressure sensor are connected with the data collecting system 17; the simulated well 7 is connected with the work liquid circulation system. The circum-well secondary stress condition and the formation radial flow of a crack-substrate system are simulated for determining the damage degree of the crack-substrate system by the device. The device and the method have the advantages that the principle is reliable; the operation is convenient; scientific and accurate quantitative reservoir damage evaluation can be made.
Owner:SOUTHWEST PETROLEUM UNIV +1

Hydraulic control system for helicopter ground integrated test bench

The invention discloses a hydraulic control system for a helicopter ground integrated test bench, and belongs to the technical field of helicopter tests. The system comprises an upper computer, an analog quantity I / O module and a steering engine controller; the upper computer is used for inputting an instruction and has a display processing function, the analog quantity I / O module is used for performing digital-to-analogue conversion, and the steering engine controller is used for receiving data transmitted by the analog quantity I / O module and controlling a main steering engine and a tail steering engine. The hydraulic control system for the helicopter ground integrated test bench further comprises a hydraulic system, a hydraulic pump in the hydraulic system serves as an accessory of a main speed reducer, an output shaft of the accessory of the main speed reducer is driven by an engine, the hydraulic pump is connected with the main steering engine and the tail steering engine through valves and pipelines, and the main steering engine, the tail steering engine and the hydraulic system all adopt airborne parts. According to the hydraulic control system for the helicopter ground integrated test bench, the real working condition of the helicopter hydraulic control system can be better simulated, the helicopter hydraulic control system can be better assessed, and meanwhile it is guaranteed that data of other test projects are truer and more effective.
Owner:CHINA HELICOPTER RES & DEV INST

Monitoring pipe and vacuum film connecting structure and connecting construction method in soft foundation treatment

The invention discloses a monitoring pipe and vacuum film connecting structure and a connecting construction method in soft foundation treatment. The connecting construction method includes the following steps: vertically drilling into foundation soil, burying the lower end of a monitoring pipe in the foundation soil, and enabling the upper end of the monitoring to be higher than a sand cushion layer; coaxially burying a sleeve outside the monitoring pipe, enabling the lower end of the sleeve to reach a foundation treatment layer, and enabling the upper end of the sleeve to be flush with or lower than the upper end of the monitoring pipe; laying a vacuum film on the sand cushion layer, enabling an opening of the vacuum film to penetrate the sleeve, and connecting the vacuum film with the four sides of the sleeve in a bonded manner; pouring clay slurry in a gap between the sleeve and the monitoring pipe, and enabling liquid level of the clay slurry to be flush with or higher than the surface of the sand cushion layer; cutting off the sleeve and the monitoring pipe after settlement of the foundation treatment layer is completed, and using a surcharged material to backfill the gap between the sleeve and the monitoring pipe densely. The monitoring pipe and vacuum film connecting structure and the connecting construction method have the advantages of simplicity in material, flexibility in operation and high sealability.
Owner:CCCC ROAD & BRIDGE SPECIAL ENG

Automobile driving simulator test system and control method

The invention discloses an automobile driving simulator test system and a control method. the automobile driving simulator test system comprises a driving simulator control machine cabinet, a drivingsimulator display module and a driving simulator driving operation device which are connected with one another, wherein the driving simulator control machine cabinet comprises a vehicle control unit VCU, a 24 V vehicle control unit VCU, a 12 V vehicle control unit VCU, a lamplight display unit, a switch control unit, a chassis control unit and an RCP control unit which are connected with one another. The control method comprises the steps of: step 1, compiling a test scheme according to test requirements of a tested control strategy; step 2, injecting the tested control strategy; step 3, selecting an environment of a test system; step 4, and executing a test. The automobile driving simulator test system and the control method have the superior effects of being capable of realizing the analysis test of driver behaviors and function tests of the vehicle control strategy, improving the development efficiency of a power assembly and shortening a development cycle, and have the advantages of simple and effective test method as well as real and valid data.
Owner:NANJING YUEBOO POWER SYST CO LTD

Food safety traceability system and method based on block chain

The invention provides a food safety traceability system and method based on a block chain, and the system comprises a display layer which comprises a mobile terminal, an external service portal and an enterprise management portal, provides a man-machine interface for a participant, enables the participant to be connected to an application layer through the display layer, and read and manage the food information; the application layer which comprises a food traceability management unit and a quality safety management unit; a service layer which comprises a contract cluster server and an artificial intelligence server, wherein the contract cluster server comprises a business execution contract and a data application contract, and the application layer performs food traceability management and quality safety management through the business execution contract and the data application contract; wherein the data sharing layer comprises a service private chain, a cooperative enterprise alliance chain and a supervision chain, and the data sharing layer collects food information and stores the food information in block chains of the service private chain, the cooperative enterprise alliance chain and the supervision chain. The method has the characteristics of no tampering and traceability, and provides guarantee for food safety.
Owner:JIANGSU RONGZE INFORMATION TECH CO LTD

Test man-hour automatic statistics method based on associated object operation statistics

The invention discloses a test man-hour automatic statistics method based on associated object operation statistics. The method comprises the following steps: A, establishing an entity element hierarchy tree; B, establishing a test man-hour data table; C, adding burying points to operations such as case creation, case editing, case execution, defect creation and defect state updating; D, adding burying points on a graphical user interface, a program interface, a program method and a program function of the software; E, establishing a background management system, and establishing a test man-hour statistics and analysis page; and F, establishing an analysis page for testing the time estimation accuracy. According to the method, all three types of work in the test work process, namely writing and executing test cases, testing software, submitting and verifying defects, can be converted into operation actions on software entity elements, and the operation duration can be automatically counted by utilizing a data acquisition tool. Completely objective test man-hour statistics is realized, data is real and effective, and accuracy and credibility are high.
Owner:SICHUAN XW BANK CO LTD

Multi-platform data sharing system and data sharing method therefor

The invention discloses a multi-platform data sharing system and a data sharing method therefor. The multi-platform data sharing system comprises a memory server, a main server, at least one secondary server, and a database server, wherein the main server is used for performing data querying, data loading and data updating for the memory server, and connected with the memory server; the at least one secondary server is used for performing data querying and data loading for the memory server, and the connected with the main server and the memory server; and the database server is connected with the main server and the one or more secondary servers. According to the technical scheme provided by the invention, the dependence on the database is reduced to the minimum on the premise of ensuring the true and valid data of the memory server; and due to the manner, the visit pressure of the database is reduced, and the data refreshing time for the client is greatly improved.
Owner:GUIYANG LONGMASTER INFORMATION & TECHNOLOGY CO LTD

Device and method for simulating typical damage of cable-stayed bridge

The invention discloses a device and a method for simulating typical damage of a cable-stayed bridge. The device for simulating typical damage of the cable-stayed bridge comprises five subsystems, namely a main beam system, an inhaul cable system, a pier tower system, a load system and a measuring system. The main beam system is used for simulating the typical damage working condition of a main beam of the cable-stayed bridge; the inhaul cable system is used for simulating a typical stay cable breaking damage working condition; the pier tower system is used for fixing the main beam system andthe inhaul cable system; the load system is used for providing different static load working conditions; and the measuring system is used for measuring the cable force of the inhaul cable system, theinternal force of a main beam in the main beam system and the rigidity of the main beam in the main beam system. The method can effectively obtain the performance degradation rule of the cable-stayedbridge under typical damage, and is simple in structure, flexible in operation, clear in stress and wide in application range.
Owner:CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY

5G base station site selection method, device and equipment in transformer substation and medium

PendingCN114298433AReduce the difficulty of site selectionShorten the construction periodForecastingResourcesGrounding gridLightning strokes
The invention belongs to the technical field of base station site selection, and particularly relates to a 5G base station site selection method and device in a transformer substation, equipment and a medium. The method comprises the following steps: S1, obtaining a transformer substation physical environment model; s2, determining an interference area SA of direct coupling interference of a transformer substation space electromagnetic field on the 5G base station in the transformer substation physical environment model, and a preliminary area satisfying 5G base station site selection; S3, based on conducted interference of a lightning rod in the transformer substation physical environment model by lightning stroke on a 5G base station power supply port through grounding grid coupling, determining the 5G base station site selection site selection; determining the position of a grounding grid node selected by the 5G base station in the area; and S4, based on the conducted interference of a transformer substation physical environment model space electromagnetic field on a 5G base station power supply port through conducted coupling, determining a finally selected node position in the grounding grid node positions selected in the step S3. The technical problem that site selection of the 5G base station in the transformer substation cannot be completed in the prior art is solved.
Owner:CHINA ELECTRIC POWER RES INST +2

Subject recruitment method and device, terminal equipment and storage medium

ActiveCN111984727AThe data is real and effectiveOccupational subjects excludedDatabase distribution/replicationDigital data protectionPatient recruitmentBlockchain
The application is suitable for the technical field of block chains, and provides a subject recruitment method and device, terminal equipment and a storage medium. The subject recruitment method comprises the steps that first data sent by a recruitment platform are acquired, the first data are compared with each piece of second data in N pieces of second data stored in a block chain to generate aduplicate checking result, the duplicate checking result is sent to the recruitment platform, and the recruitment platform determines whether an applicant meets recruitment conditions or not accordingto the duplicate checking result. The method is based on decentration of a block chain and the characteristic that data cannot be tampered, data among a plurality of recruitment platforms can be shared through the block chain to determine whether the applicant meets recruitment conditions or not, data is eensured to be real and effective, professional subjects are effectively eliminated, and information leakage is prevented due to the fact that a plurality of recruitment platforms cannot access data of each other based on the characteristic of data anonymity of a block chain, thereby protecting personnel privacy.
Owner:CHANGSHA DUXACT BIOTECH CO LTD +1

A method for analyzing the long-distance running route of drivers in logistics transportation

The invention relates to a method for analyzing a long-distance running route of a driver in a logistics transportation, comprising the following steps: 1) analyzing a consumption record to obtain a correspondence relation table (CT) between a province and a toll station in the whole country; 2) obtaining a basic network acquisition data table (NT) through a Baidu map data service, wherein the network acquisition data table (NT) stores all the collected fields; 3) obtaining a base table (FT) from a data table (NT) by matching a site name in a correspondence relation table (CT) through a provincial association; 4) saving the name of the station which is not matched in the step 3) and waiting for manual processing; 5) performing the step 2) once a week, comparing the data table (NT) obtain by the network, obtaining the correspondence relationship between the prefecture and the city of the station by the newly added station using the step 3), adding the correspondence relationship into the basic table (FT), inquiring about the failure to use the step 4), and performing manual processing; 6) cleaning the consumption record data by using a foundation table (FT), cleaning the full amountof high-speed traffic data for the first time, and cleaning the incremental data once a week.
Owner:安徽科大国创慧联运科技有限公司

A method for calculate that wind deviation distance of insulator string

A method for calculate that wind deviation distance of insulator string include such steps as S1, obtaining the wind deviation angle of insulator string of transmission pole and tower, S2, calculatingthe wind deviation compensation coefficient of the insulator string of the transmission pole and tower; S3, calculating the theoretical value of the wind deviation distance of the insulator string ofthe transmission pole and tower; S4, obtaining the actual wind deviation distance of the transmission tower insulator string according to the wind deviation compensation coefficient of the transmission tower insulator string and the theoretical value of the wind deviation distance of the transmission tower insulator string. The invention obtains the wind deviation compensation coefficient by directly measuring the wind deviation angle through an inclination sensor, thereby obtaining the wind deviation compensation coefficient, the data is convenient to obtain, the data is real and effective,the calculation process is simple, and the method can be used in practice, and provides a direct and effective method for the wind deviation analysis of an overhead transmission line.
Owner:HAINAN POWER GRID CO LTD ELECTRIC POWER RES INST

Intelligent climbing frame system

The invention belongs to the technical field of intelligent climbing, and discloses an intelligent climbing system. The system comprises a local equipment module, an information management module, anequipment management module, a first server module and a second server module; the local equipment module is respectively in communication connection with the information management system and the equipment management module through the first server module. According to the intelligent climbing frame system provided by the invention, real-time monitoring and real-time management can be carried outon related equipment of the climbing frame system, real, comprehensive and complete effective data are also provided, powerful data support is provided for operation, adjustment and maintenance of the climbing frame system, equipment management is facilitated, and in addition, personnel can conveniently check the data. The invention is suitable for climbing frame equipment.
Owner:邢台亚特工业自动化科技有限公司

Power grid intelligent self-healing method after typhoon disaster

The invention discloses a power grid intelligent self-healing method after a typhoon disaster. The problems that the power grid self-healing control method in the prior art is simple in model and difficult to reflect the dynamic adjustment process of a power grid are solved. The method comprises the following steps: S1, monitoring data of each level of power grid after a disaster in real time, and collecting and counting disaster conditions of each level of power grid; S2, establishing a three-dimensional energy distribution model according to the data of each level of power grid; S3, according to the three-dimensional energy distribution model, in combination with disaster condition analysis of each level of power grid, making a source-grid-load-storage collaborative self-healing plan for each power grid in a disaster area, and limiting the execution recovery time of each healing plan; S4, after the execution recovery time of the self-healing plan is ended, judging whether the self-healing of the power grid is completed or not; and if the self-healing is not completed, updating the disaster condition of the power grid, and returning to the step S3 to reformulate the self-healing plan. According to the invention, through a source-grid-load-storage cooperative control technical means, the power grids at all levels are dynamically adjusted, the feedback is real-time and real, and the self-healing efficiency is improved.
Owner:WENZHOU ELECTRIC POWER BUREAU

Ancient and famous tree safety monitoring and early warning device based on NB-LOT network

The invention belongs to the technical field of ancient and famous tree safety monitoring and early warning, and especially relates to an ancient and famous tree safety monitoring and early warning device based on an NB-LOT network. The device comprises an NB-LOT inclination angle sensor, an NB-LOT soil moisture content sensor, an NB-LOT termite sensor, a background server and an ancient and famous tree early warning system. The NB-LOT inclination angle sensor is in signal connection with the background server, the NB-LOT soil moisture content sensor is in signal connection with the backgroundserver, and the NB-LOT termite sensor is in signal connection with the background server. The product supports internet-of-thing monitoring of all ancient and famous trees at present; the device is convenient to install and is stable; the data is real and effective; the stored state can be analyzed through the ancient and famous tree safety monitoring and early warning system based on the contentof the background server, and the state of the ancient and famous tree can be sensed in real time based on the analyzed data; and if the state exceeds the set standard, alarm information can be pushed to terminal equipment, and protection measures can be taken at the first time.
Owner:上海潮旅信息科技有限公司

Coal mining machine electrical assembly detection test bench

The invention is applicable to the technical field of coal mining machine detection, and provides a coal mining machine electrical component detection test bench which comprises a bench body, wherein an accommodating space capable of simulating temperature and humidity changes of a coal mining machine in a daily working state is arranged in the bench body, an electrical assembly of the coal mining machine is placed in the accommodating space, a detection interface used for being electrically connected with the electrical assembly of the coal mining machine is arranged in the accommodating space, and an EPU module, a motor controller module and a grounding leakage locking module of the electrical assembly of the coal mining machine are detected along with temperature and humidity changes through the detection interface. Various detection of the electrical assembly of the coal mining machine is carried out in the accommodating spaces with different temperature and humidity, the daily environment during use is better met, detected data is more real and effective, the detection conditions in different environments are convenient for engineers to process the problem in allusion to the corresponding environment, and the problem in actual use is avoided, so that the whole detection and repair process is more targeted and authentic.
Owner:TAIYUAN INST OF CHINA COAL TECH & ENG GROUP +1

Dike foundation seepage deformation device under vertical load effect

The invention belongs to the technical field of embankment engineering and flood control and fighting, and particularly relates to an embankment foundation seepage deformation device under the action of vertical load, which comprises a model tank, a loading plate, a water head control box and a plastic seepage-proofing composite vertical plate, deformation of the model tank under the condition of overhigh water pressure can be effectively prevented; during loading, the two guide column bases on the loading plate are matched with the supporting columns to transmit loads, so that the loads are more uniformly loaded to the embankment foundation, and the situation that a soil body deforms due to the fact that the load at a certain position is too large is prevented; the model groove is divided into three areas by the sand partition plates, the pressure bearing area enables water pressure to uniformly act on the embankment foundation, the sand groove area is used for placing an embankment foundation model, the water leveling area is used for collecting seepage water discharged by the embankment foundation, the sand partition plates enable an embankment foundation material not to penetrate into other areas, and the plastic anti-seepage composite vertical plates simulate an anti-seepage structure in the embankment foundation. Through the setting, the test is closer to the real situation, and the obtained data is more real and effective.
Owner:NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER

Fault monitoring and early warning system of mud scraping machine in sedimentation tank and calculation method of system

The invention provides a fault monitoring and early warning system of a mud scraping machine in a sedimentation tank. The system adopts two laser distance measuring instruments as measurement equipment of the monitoring system, and the system also comprises a datum acquisition unit, a datum analysis unit and an early warning alarm unit; the two laser distance measuring instruments are installed onthe upper parts of the left and right ends of the sewage sedimentation tank, and the datum acquisition unit, the datum analysis unit and the early warning alarm unit are application software installed in an embedded system. The performance calculation method of the fault monitoring and early warning system of the mud scraping machine in the sedimentation tank adopts the datum analysis unit of a performance monitoring system of mud scraping plates to calculate height change of the mud scraping plates and wear-resistant boot-like fittings and spacing between two adjacent mud scraping plates. The system provided by the invention performs real-time height and position monitoring on the wear-resistant boot-like fittings on two sides and the upper part of each mud scraping plate, when height data, position data and the like exceed preset values of the system, the system automatically generates an alarm information to give a prompt to management workers, and the management workers can replace damaged mud scraping plates and wear-resistant boot-like fittings in time to ensure normal operation of the whole equipment.
Owner:重庆星航智能信息技术咨询有限公司

A Calculation Method of Wind Deviation Distance of Insulator String under Different Lengths

The invention provides a method for calculating the wind swing distance of an insulator string under different lengths. According to the method, an insulator wind swing distance simulation device is established, so that a wind swing compensation coefficient is obtained; and the wind swing distance of the wind swing is obtained. The method has the advantages of convenient data acquisition, true andeffective data and simple calculation process. The method can be applied to practical conditions and provide a direct and effective method for the wind swing analysis of overhead transmission lines.
Owner:HAINAN POWER GRID CO LTD ELECTRIC POWER RES INST

A method for a typical damage simulator of a cable-stayed bridge

The invention discloses a device and method for typical damage simulation of cable-stayed bridges, wherein the device for typical damage simulation of cable-stayed bridges includes five sub-systems: girder system, cable system, pier tower system, load system, and measurement system. System, main girder system: used to simulate the typical damage condition of the main girder of the cable-stayed bridge; cable system: used to simulate the typical broken cable damage condition of the cable-stayed cable; pier tower system: used to fix the main girder system and the cable system ; Load system: used to provide different static load conditions; Measuring system: used to measure the cable force of the cable system, the internal force of the main beam in the main beam system, and the stiffness of the main beam in the main beam system. The invention can effectively obtain the performance degradation rule of the cable-stayed bridge under typical damage, has simple structure, flexible operation, clear stress and wide application range.
Owner:CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY

Real-time monitoring method for grouting construction compactness of steel bar sleeve

The invention relates to the technical field of fabricated building construction, and discloses a real-time monitoring method for grouting construction compactness of a steel bar sleeve. The method comprises the following steps that 1, a compactness monitoring sensor is fixed at the top end in a grouting sleeve; 2, a grouting communicating cavity is sealed; and 3, in the construction process or after construction is finished, a compactness monitor is used for monitoring a sensor signal so as to monitor the grouting construction compactness. According to the monitoring method, real-time monitoring of the grouting construction compactness of the steel bar sleeve can be achieved, operation is convenient and easy, the existing fabricated building grouting construction technology can be effectively improved, the grouting compactness can be ensured, and the structural safety can be improved.
Owner:武汉合创炬盛科技有限公司

Gas collection bottle as well as use method and application thereof

The invention belongs to the field of geothermal geochemical exploration and near-surface oil and gas geochemical exploration, and particularly relates to a gas collecting bottle and a using method and application thereof. The gas collection bottle comprises a main bottle body; a bottle opening; a gas inlet; a gas injection port; and an air pump extraction opening. According to the invention, gas in underground soil is dried and filtered through the adsorbent at the gas inlet, so that unwanted impurity gas and interference gas are removed. Negative pressure is kept in the bottle through the air pump, and extraction of free-state and weak-adsorption-state gas in underground soil can be accelerated. Meanwhile, the volume in the bottle is reduced, so that positive pressure in the bottle is realized, a gas sample can be completely obtained when the injector extracts gas, and interference is reduced. According to the gas collection bottle, collection of geothermal associated gas is ensured, errors are reduced, target components are accurately obtained, and guarantee is provided for obtaining real and effective data.
Owner:CHINA PETROLEUM & CHEM CORP +1

A connection structure and connection construction method of monitoring pipe and vacuum membrane in soft foundation treatment

The invention discloses a monitoring pipe and vacuum film connecting structure and a connecting construction method in soft foundation treatment. The connecting construction method includes the following steps: vertically drilling into foundation soil, burying the lower end of a monitoring pipe in the foundation soil, and enabling the upper end of the monitoring to be higher than a sand cushion layer; coaxially burying a sleeve outside the monitoring pipe, enabling the lower end of the sleeve to reach a foundation treatment layer, and enabling the upper end of the sleeve to be flush with or lower than the upper end of the monitoring pipe; laying a vacuum film on the sand cushion layer, enabling an opening of the vacuum film to penetrate the sleeve, and connecting the vacuum film with the four sides of the sleeve in a bonded manner; pouring clay slurry in a gap between the sleeve and the monitoring pipe, and enabling liquid level of the clay slurry to be flush with or higher than the surface of the sand cushion layer; cutting off the sleeve and the monitoring pipe after settlement of the foundation treatment layer is completed, and using a surcharged material to backfill the gap between the sleeve and the monitoring pipe densely. The monitoring pipe and vacuum film connecting structure and the connecting construction method have the advantages of simplicity in material, flexibility in operation and high sealability.
Owner:CCCC ROAD & BRIDGE SPECIAL ENG

Thermal zinc spraying drawing force detection method of wind turbine bearing

The invention provides a thermal zinc spraying drawing force detection method of a wind turbine bearing. A drawing force detection sample block made of the same material of the wind turbine bearing isproduced, and the detection sample block is matched with a wind turbine bearing mounting hole in shape; the drawing force detection sample block is mounted in the wind turbine bearing mounting hole;the drawing force detection sample block is subjected two sand blasting treatment with the wind turbine bearing; after sand blasting, the drawing force detection sample block is subjected to zinc spraying treatment with a product; after zinc spraying, a drawing force detection rivet is glued to the drawing force detection sample block; after a preset period, drawing force detection is conducted. The drawing force detection sample block can be processed as part of the product instead of being treated independently, the binding force condition of each set of wind turbine bearing after spraying process can be randomly detected, data are real and effective, the accuracy is high, the actual condition in the processing process can be reflected, and real-time adjustment can be performed accordingto the actual detection condition.
Owner:WAFANGDIAN BEARING GRP STATE BEARING ENG TECH RES CENT CO LTD +1

A Helicopter Ground Combined Test Bench Hydraulic Control System

The invention discloses a hydraulic control system for a helicopter ground integrated test bench, and belongs to the technical field of helicopter tests. The system comprises an upper computer, an analog quantity I / O module and a steering engine controller; the upper computer is used for inputting an instruction and has a display processing function, the analog quantity I / O module is used for performing digital-to-analogue conversion, and the steering engine controller is used for receiving data transmitted by the analog quantity I / O module and controlling a main steering engine and a tail steering engine. The hydraulic control system for the helicopter ground integrated test bench further comprises a hydraulic system, a hydraulic pump in the hydraulic system serves as an accessory of a main speed reducer, an output shaft of the accessory of the main speed reducer is driven by an engine, the hydraulic pump is connected with the main steering engine and the tail steering engine through valves and pipelines, and the main steering engine, the tail steering engine and the hydraulic system all adopt airborne parts. According to the hydraulic control system for the helicopter ground integrated test bench, the real working condition of the helicopter hydraulic control system can be better simulated, the helicopter hydraulic control system can be better assessed, and meanwhile it is guaranteed that data of other test projects are truer and more effective.
Owner:CHINA HELICOPTER RES & DEV INST

Method for calculating wind swing distance of insulator string under different lengths

The invention provides a method for calculating the wind swing distance of an insulator string under different lengths. According to the method, an insulator wind swing distance simulation device is established, so that a wind swing compensation coefficient is obtained; and the wind swing distance of the wind swing is obtained. The method has the advantages of convenient data acquisition, true andeffective data and simple calculation process. The method can be applied to practical conditions and provide a direct and effective method for the wind swing analysis of overhead transmission lines.
Owner:HAINAN POWER GRID CO LTD ELECTRIC POWER RES INST

Lifting pedestal for testing electrical insulation performance of composite silicon rubber metal oxide lightning arrester

The utility model relates to a lifting base for testing electrical insulation performance of a composite silicon rubber metal oxide arrester, which belongs to the technical field of high voltage testing in the electric power industry, and in particular relates to a lifting base for testing electrical insulation performance of a composite silicon rubber metal oxide arrester. The invention provides a lifting base for testing electrical insulation performance of a composite silicon rubber metal oxide arrester with high test efficiency. The invention includes an insulating outer cylinder and an insulating inner cylinder. The main points of the structure are that the insulating inner cylinder is arranged in the insulating outer cylinder, the lower end of the insulating outer cylinder is fixed on the metal base supporting plate, and the metal base supporting plate in the middle of the insulating outer cylinder is provided with a hydraulic pressure Pump, the upper end of the hydraulic pump is connected to a hydraulic cylinder, the outlet of the hydraulic pump is connected to the hydraulic oil inlet of the hydraulic cylinder, the upper end of the telescopic rod of the hydraulic cylinder is connected to the middle of the horizontal connecting arm, and the two ends of the horizontal connecting arm are fixed to the vertical middle of the inner wall of the insulating inner cylinder , the upper end of the insulating inner cylinder is fixed with a fixed chassis of a horizontal composite silicone rubber metal oxide arrester.
Owner:STATE GRID LIAONING ELECTRIC POWER CO LTD SHENYANG POWER +1

Underwater wireless beacon based on Beidou transmission and underwater communication method

The invention discloses an underwater wireless beacon based on Beidou transmission and an underwater communication method, and relates to the technical field of underwater information communication. The system comprises an underwater wireless beacon main system; the underwater wireless beacon main system comprises an underwater communication system, a water surface communication system and a beacon self-destruction system; wherein the underwater communication system comprises a Bluetooth module and a main control module which are electrically connected, the water surface communication system comprises a stroboscope lamp and a Beidou module which are electrically connected, and the beacon self-destruction system comprises a self-destruction module and a battery pack which are electrically connected. The invention relates to an underwater wireless beacon based on Beidou transmission and an underwater communication method. According to the scheme, underwater data can be received and stored in a cable-free mode according to needs and transmitted to the shore end after floating out of the water surface, and finally self-destruction operation after the beacon communication function is completed. The system improves the safety performance, guarantees the safety of data transmission, and is convenient and fast to use; and meanwhile, the secrecy, controllability and flexibility of communication are guaranteed, the service life is prolonged, and the cost is reduced.
Owner:武汉中科海讯电子科技有限公司

Multi-platform data sharing system and data sharing method thereof

The invention discloses a multi-platform data sharing system and a data sharing method thereof. The above-mentioned system includes: a memory server; a main server for querying data, loading data, and updating data of the above-mentioned memory server is connected to the above-mentioned memory server; at least one slave server for querying data and loading data for the above-mentioned memory server is connected to the above-mentioned main server It is connected with the above-mentioned memory server; the database server is connected with the above-mentioned master server and the above-mentioned one or more slave servers. According to the technical solution provided by the present invention, under the premise of ensuring that the data of the memory server is real and effective, the dependence on the database is minimally dragged down. This method reduces the access pressure of the database and can greatly improve the client's ability to refresh data. time.
Owner:GUIYANG LONGMASTER INFORMATION & TECHNOLOGY CO LTD
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