416 results about "Service life cycle" patented technology

The invention provides a manufacturing cloud system for supporting on-demand use and dynamic collaboration of manufacturing resources and manufacturing capacities, which is used for solving the problems that the use ratio of resources is low, the sharing of the manufacturing capacities is insufficient, effective business operation management measures are short and the like in the process of manufacturing enterprise informatization in China. Aiming at the characteristics of the manufacturing resources and the actual demands of an enterprise for a cloud manufacturing service platform, and according to the lifeline of a cloud service life cycle, the manufacturing resources and the manufacturing capacity in the manufacturing cloud system are designed and stated in five system modules namely intellisense, virtual access, virtual resource servicesation, deployment of cloud services, and integrated management of the cloud services, thus meeting the demand of the on-demand use and the dynamic collaboration of the manufacturing resources and the manufacturing capacities. The manufacturing cloud system has the advantages that the intellisense, the servicesation of the manufacturing capacities and service life cycle demands which are accessed to the manufacturing resources are supported, the intelligence is supported, the services are shared on demand, the system structure is flexible, the levels are distinct, and the expandability is strong.

The invention discloses an Li traction battery series parallel change-over charging method and a charging device. The charging device comprises a power main loop comprising a rectifier circuit, a DC filtering capacitor, a pre-charging circuit, a voltage sensor, a switch bridge circuit, a charging current sensor and a series parallel change-over switch, a control circuit board comprising a parallel branch signal unit, a switch signal drive control unit, a coil signal circuit, a voltage current signal circuit, a control processor and a signal display unit, a serial charging circuit comprising a filter inductor, a filter capacitor and an output voltage sensor, and a parallel charging circuit comprising a primary coil, a feedback coil, an iron core, a plurality of secondary coils of a multi-winding transformer and a plurality of series parallel charging unit. The pre-charging, serial charging and parallel charging are carried out by the charging method according to a set pre-charging voltage value and an end voltage value. The method and the device provided by the invention reduce the cost and volume of charging devices, maintain the balance of charging capacity of every Li traction battery electrical core, ensure adequate protection and best working status for each battery unit and improve safety and service life cycle of Li traction battery.

The invention belongs to the field of file systems and relates to a method for prolonging service life of nonvolatile storage with a reconfigurable file system directory tree. The method is characterized in that a memory virtual directory tree is included, update of metadata of the file system directory tree is recorded into a memory without being written back to a persistent directory tree, and a tree structure of the file system directory tree is provided by means of an embedded link method, namely, a manner of embedding index link information in indexed pages; the content of the file system directory tree provided by a persistent metadata log type written-in method is upgraded, namely a manner of compressing a plurality of metadata pages and writing in the compressed pages in the form of logs; after failure recovery, the file system directory tree is rapidly constructed. According to the method for prolonging service life of nonvolatile storage with the reconfigurable file system directory tree, the influence of metadata written-back operation on performances and service life of a storage system can be effectively relieved, and high-speed access to the metadata of the file system directory tree and fast reconstruction after failure recovery are provided.

A method, apparatus and program product to monitor tire service life for one or more vehicles based at least in part on collected tire data. Received tire data for a tire may be analyzed to determine whether a service life of the tire corresponds to an end of service life of a tire data model. Responsive to determining that the service life of the tire corresponds to the end of service life of the tire data model, an alarm may be generated for the tire.

The invention discloses a surfacing electrode for repairing a hot forged mould, which uses a low-carbon steel H08A core wire conforming to the GB/T3429 requirement. The solid component quality content of coating is as follows: 30-40% of marble, 12-20% of fluorite, 1.5-3% of zircon sand, 0-2% of soda ash, 2-5% of silicon epitaxy material, 1-3% of titanium white, 0-3% of flogopite, 1-2% of rare earth fluoride, 3-7% of manganese metal, 2-5% of ferrosilicon, 4-6% of ferrotitanium, 4-8% of chromium metal, 4-8% of ferromolybdenum, 6-12% of metallic nickel and 1-2% of aluminium magnesium alloy. The invention has favorable welding rod performance, smooth welding rod surface, high yield and stable eccentricity; electric arc is easy to ignite and is stable to burn; coating is even to melt, a welding line is attractive in shape, and slag is easy to clean; and a deposition metal weld metal buildup has moderate welding state hardness which reaches the requirements of the hot forged mould, thus improving the service life cycle of the hot forged mould.

The invention discloses a preparation method of a nickel-cobalt-manganese ternary anode material. The method comprises the following preparation steps: step A, screening a lithium source to obtain granules, and controlling the granularity D50 to be 3-8 mum for later use; step B, sequentially performing liquid phase mixing, wet ball milling and drying treatment on the lithium source granules obtained in step A, a ternary precursor LiNi0.6Co0.2Mn0.2(OH)3 and an additive to obtain mixed powder; step C, roasting the mixed powder obtained in step B for 5-15 h at the temperature of 500-850 DEG C; step D, mixing the primary roasted material obtained in step C with a coating agent, and performing ball milling to obtain a mixed material; and step E, performing secondary roasting on the mixed material obtained in step D for 10-20 h at the temperature of 750-950 DEG C to obtain the nickel-cobalt-manganese ternary anode material. The nickel-cobalt-manganese ternary anode material prepared by improving the raw material selection of the additive and the coating agent, introducing appropriate oxygen and adopting a two-roasting process has relatively high capacitance and first charge rate and long service life cycle.

The invention relates to a hybrid vehicle energy managing method considering the service life of a battery. The method includes the following steps of firstly, collecting current vehicle running state data and battery running state data; secondly, establishing a vehicle model, and predicting the vehicle running state and the battery running state within a period of time in the future according to the vehicle model; thirdly, calculating the sum of battery capacity attenuation cost and the sum of oil consumption cost within a period of time in the future; fourthly, establishing a multi-target control model, and obtaining the optimal control amount meeting the optimization target through a multi-target coordination control algorithm, wherein the multi-target control model comprises a target function J* and a constraint condition C; fifthly, forming a control signal according to the optimal control amount, and controlling the running state of a vehicle. Compared with the prior art, the method has the advantages of being good in control effect, capable of effectively prolonging the service life of the battery, reducing the total use cost of the vehicle, and the like.

The invention relates to a battery charger combining charging time and the service life of a battery. The battery charger comprises a master controller, a charging control circuit, a voltage acquisition module, a current acquisition module, a temperature detection module, a protective circuit module, a working state indication module, a display module and a power conversion module, wherein the master controller is connected with the charging control circuit, the voltage acquisition module, the current acquisition module, the temperature detection module, the protective circuit module, the working state indication module and the display module respectively; and the charging control circuit, the voltage acquisition module, the current acquisition module and the temperature detection module are connected with the battery to be charged respectively. The battery charger further comprises a human-computer interaction module connected with the master controller. Compared with the prior art, the battery charger has the advantages of enabling a user to self-define the charging time and realizing reduction in the ageing of the battery by regulating a charging rate under the condition of relatively longer charging time, prolonging the service life of the battery, and the like.

The invention discloses a method for improving the service life of FLASH, wherein the FLASH is used for storing user data; the FLASH is divided into more than two storage units capable of completely storing the user data; more than two storage units store the data in turn instead of storing contents for a fixed storage unit, so that some storage unit is repeatedly read and written and the storage units are reused, thereby preventing the FLASH from the emergence of bad sectors because some storage unit is repeatedly used and improving the service life of the FLASH.

The invention relates to a lithium ion battery, and further relates to a lithium ion battery service life prediction method. The method comprises the following steps of collecting the running data ofthe in-service or retired battery of the same model, and establishing a database which comprises the battery operating temperature, the battery discharge rate, the battery internal resistance and thetotal service life parameter; establishing a battery service life prediction linear regression function model: h (x) = h theta (x) = theta 0+theta 1*1+theta 2*2 + theta 3*3, and the operating temperature, the discharge rate, the internal resistance of the battery in a specified model are substituted into the regression model, and the total service life of the battery is obtained. The operating temperature, the discharge rate and the internal resistance of the battery are key factors affecting the service life of the battery, and the operating temperature, and by introducing the discharge rateand the internal resistance of the battery to be used as the influence parameters of the battery service life, the modeling prediction is effective.

The invention relates to a risk-based equipment integrity management system for oil refining enterprises. The system comprises an ERP system PM module or EM system database server, an enterprise real-time database server, a Lims system database server, a corrosion management system database server, a mobile device state monitoring system database server, an overhaul and maintenance management system database server, a knowledge base server, a management system central database server, a Web server, an area network and a client. According to the system, an equipment integrity management database is established; the whole process of the device service life cycle is managed by using technical management software and through a standard management and technological improvement method; and closed-loop management of equipment risk is realized, and thus equipment integrity management is realized.

The invention discloses a system for testing the service life of an electromagnetic relay coil and a service life evaluation method. By matched control of a voltage-stabilizing power supply, a timing switch and an alternation aging box, a plurality of groups of relays are respectively subjected to accelerated aging test and measured by a thermocouple temperature sensor, a resistance measurer and an insulating resistance measurer to obtain coil aging sensitivity parameters such as coil enameled wire average temperature, coil direct current resistance and coil insulating resistance, the average operating time of a plurality of groups of test is calculated by using a reliability theory, and the activation energy of a coil enameled wire is calculated by using a least square method, so parameters in a service life evaluation model are determined, and the average operating time (service life) of the relay coil can be evaluated by using the service life evaluation model with the determined parameters.

The invention provides a management system for a relay protection device. The system comprises a radio frequency identification (RFID) reading and writing mobile terminal, a mobile terminal system, a background server and a RFID electronic tag arranged on the relay protection device, wherein the RFID electronic tag is arranged on the panel of the relay protection device; and the RFID electronic tag stores identification information of the relay protection device. the system of the invention adopts one-item-one card-one-account precise management, the device information is acquired in a non-contact mode on the basis of not changing the prior relay protection device wiring, a background management system is correlated to realize real-time presentation of the device information; and closed-loop management is carried out on the total service life cycle of the device through the background management system, the relay protection device can be tracked and traced, and the automatic degree and the intelligent degree of relay protection device management can be improved.

The invention discloses a method for gaining the service life of a helicopter drive system component. Strain test points are determined on the helicopter drive system component to be tested, and estimation data of the service life of the helicopter drive system component to be tested are given; in the process of a ground combined test and a flight test, strain data are obtained from the strain test points; according to the ground combined test and the flight test of a helicopter to be tested under multiple states and multiple load conditions, a criterion for overhaul of the helicopter drive system component to be tested is determined; obtained actual measurement data of the helicopter drive system component are analyzed, and the condition that the strain values of all strain test points of the helicopter to be tested exceed a monitor limit value and a component accumulated fatigue damage value is monitored and analyzed in time; comparison and correction are carried out by combining the estimation data and the actual measurement data, and the service life value of the helicopter drive system component to be tested of the same type is obtained.

The invention discloses a running protection device of a medical oxygenerator. The running protection device comprises an installation seat, wherein four protection clamping mechanisms are uniformly distributed around the top of the installation seat, a support bottom plate is installed at the bottom of the installation seat, and four buffer positioning mechanisms pass through between the installation seat and the circumference of the support bottom plate. According to the running protection device, through the structural design of the support bottom plate and the four buffer positioning mechanisms, the resonance phenomenon is effectively avoided, the service life of the medical oxygenerator is greatly prolonged, the influence on the service environment is reduced, the movement is convenient, and the running protection device has a good practical value and is worthy of popularization and application.

The invention relates to an intelligent type test system for the service life of fuses, which comprises a central control unit, a programmable constant-current source, a monitoring and isolating module and an execution unit, wherein the programmable constant-current source is connected between one output end of the central control unit and a fuse group in series, the monitoring and isolating module is electrically connected between the input end of the central control unit and each fuse, and the execution unit is electrically connected between the output end of the central control unit and each fuse and used for receiving a signal of the central control unit to short-circuit the corresponding disconnected fuses so as to restore the power supply of other fuses. By the test system, real-time monitoring can be carried out on the on-off states of the fuses. After a certain fuse is fused, the fuse is automatically short-circuited, so that the power supply of other fuse samples is automatically restored, and no interruption of the electrification time of the fuses is ensured. Meanwhile, the output test current of the constant-current source can be accurately controlled, and a firm test basis is established for the evaluation accuracy of the service life of the fuses.

The invention discloses an aircraft structure checking task planning method based on risk and cost analysis. The checking mode comprises traditional structure non-destructive detection and structure health monitoring. The method comprises the steps that based on the principle of probability damage tolerance analysis, the calculation model of single flight failure probability of an aircraft structure element is established; based on the model, a cumulative risk calculation model of a fleet in a certain period of time is established; in the existing aircraft structure plan maintenance mode, the maintenance cost calculation model of the aircraft structure element in the service life cycle is established, wherein the calculation model comprises structure checking cost, repair cost and false alarm cost; the single flight failure risk and fleet cumulative risk are used as the risk assessment indicators of a structure maintenance policy; under the premise that a safety risk requirement is satisfied, the optimal structure checking policy can be determined according to the analysis of the structure whole service life cycle maintenance cost. The optimal structure checking interval and repair threshold can be determined based on the tradeoff between the structure failure risk and the service life cycle maintenance cost.

The invention discloses an estimation method for service life of a complex electromechanical system. According to the method, a success tree model of an event that operation is successfully completed by a system is firstly established from the view of system structure. Under data information conditions of fewer components, field practical data is fully combined to determine system basic components and life distribution thereof. According to engineering data, the life distribution parameter of each component is obtained by applying a variation coefficient method. According to the method, the dependency of the conventional method on mass data is overcome, and test data, design data, field data and engineer experience data are fully utilized and combined; the method is a completer and more effective method; on the basis that the life distribution and the distribution parameters of the system components are obtained, the average life of the system is estimated and verified from different views by applying a Bayesian network method and a Monte Carlo simulation method respectively, so that the service life of the entire complex electromechanical system is calculated.

The invention discloses a method for predicting the service life of a key system of rail transit vehicles. The method comprises the following steps of firstly, determining the key system of urban rail vehicles, and bringing in a proportional hazard model to carry out service life prediction on the key system; secondly, screening historical overhauling data of the key system to obtain concomitant variable factors, and processing concomitant variables by applying a principal component analysis method so as to obtain a concomitant variable matrix; thirdly, solving a parameter estimation value in the proportional hazard model by adopting a maximum likelihood estimation method and a Newton iteration method; finally, calculating the predicted service life of the key system of the rail transit vehicles by utilizing the obtained proportional hazard model. According to the method disclosed by the invention, the influence of the concomitant variable factors on the service life of the key system of the rail transit vehicles is considered, and the defect that the service life prediction is inaccurate as only system failure is considered in traditional service life prediction is overcome.

The invention discloses a method for testing the service life of rolling bearings, which comprises: mounting two rolling bearings to be tested on one optic axis and rotationally supporting the optic axis by using a bearing block on which a supporting bearing is arranged; driving the optic axis to rotate at a constant rotation speed by using a power transmission device; applying a pair of loads which are the same in size and opposite in direction along the radial direction of the optic axis to the bearings to be tested; and recording the failure time of the rolling bearings to be tested and calculating the service life under normal stress level of the tested bearings. According to the technical scheme, the service life of the rolling bearings is tested by applying the loads which are the same in size and opposite in direction along the radial direction of the optic axis to the bearings to be tested, the external forces born by the optic axis in a testing system in the whole test process are almost kept balance, the optic axis hardly bears forces applied by the internal parts of the system, and thus, the operation reliability and service life of the whole test system are improved.

The invention belongs to the technical field of monitoring of the service life of equipment and in particular discloses a monitoring and early warning system for the service life of the equipment. The using frequency of the controlled equipment is automatically counted, a monitoring server simultaneously monitors the service lives of a plurality of pieces of equipment, and when a certain piece of controlled equipment is overdue, the monitoring server sends monitoring information to remind a manager or an equipment maintainer to perform subsequent management and control on the controlled equipment. Therefore, the system can automatically and effectively monitor the service life of the controlled equipment and can be widely applied to monitoring of the service life of the controlled equipment in a large production workshop.