132 results about "Life value" patented technology

A system (10) and method for monitoring the operational life and / or performance of one or more light-emitting diodes (LEDs) (20) based on sensed parameters are disclosed. The remaining life of each LED may be predicted by counting the clock cycles during which the LED-based light is activated. LED current and / or temperature measurements may be used to control the clock signal and, thus, to compensate the predicted life value. Furthermore, operational characteristics of the LED-based light may be monitored based on LED current and / or voltage measurements. Such characteristics may include performance (e.g., intensity) and failure conditions (e.g., open or short circuits).

A system (10) and method for monitoring the operational life and / or performance of one or more light-emitting diodes (LEDs) (20) based on sensed parameters are disclosed. The remaining life of each LED may be predicted by counting the clock cycles during which the LED-based light is activated. LED current and / or temperature measurements may be used to control the clock signal and, thus, to compensate the predicted life value. Furthermore, operational characteristics of the LED-based light may be monitored based on LED current and / or voltage measurements. Such characteristics may include performance (e.g., intensity) and failure conditions (e.g., open or short circuits).

The invention relates to a battery degradation state model-based lithium ion battery cycle life prediction method, aiming at solving the problem of difficulty in modeling existing in the conventional lithium ion battery cycle life prediction process. The battery degradation state model-based lithium ion battery cycle life prediction method comprises the following steps: 1, acquiring battery monitoring data and preprocessing the data; 2, obtaining a battery degradation state model according to battery degradation state model training; and 3, predicting the lithium ion battery cycle life according to the battery degradation state model obtained by the step 2 to obtain a lithium ion battery cycle life value so as to realize battery degradation state model-based lithium ion battery cycle life prediction. The battery degradation state model-based lithium ion battery cycle life prediction method is suitable for the field of batteries.

An embodiment of the invention provides a direct-current bus electrolytic capacitor life test method and device. The method includes: controlling a direct-current bus electrolytic capacitor to charge and / or discharge, and determining the variation relation between capacitance of the direct-current bus electrolytic capacitor and time of charging and / or discharging process; determining a life value of the direct-current bus electrolytic capacitor according to a minimum capacitance that full-load output requires and the variation relation; according to the life value and a life prediction formula of the direct-current bus electrolytic capacitor, calculating operating temperature of the direct-current bus electrolytic capacitor; according to the calculated operating temperature and measured ambient temperature of the direct-current bus electrolytic capacitor, acquiring a temperature correction coefficient; using the temperature correction coefficient to correct the life prediction formula, and testing the life value of the direct-current bus electrolytic capacitor by the corrected life prediction formula. By correcting the electrolytic capacitor life prediction formula, the life of the electrolytic capacitor can be accurately predicted.

The invention relates to a method and a system for managing die manufacturing information, which are applied to managing various categories of information data of die manufacturing, wherein a graded server is arranged in the system to form a management terminal and is connected with one or more client terminals through a router; the server and the client terminals also comprise human-computer interfaces connected with the server and the client terminals and are provided with a same storage cell for storing data information of various information categories; the storage cell comprises a plurality of data cells for storing data; a classifying label die can use the periodical maximum life value, initialize and store the numerical value of the maximum life value in a database, and modify and store the numerical value of the life cycle according to a diminishing law by recording the calling times of the die; the client terminals communicate with the server by connecting the router, add, modify, delete, search and perform full-text retrieval on the information data of the die manufacturing; and the human-computer interfaces display and input related die data information.

The invention relates to a device for estimating the cycle life of a battery, comprising a measuring unit, an observer unit, an adaptability parameter unit, an inner voltage estimating unit, an open-circuit voltage estimating unit, a battery cycle life computing unit and a battery residual electricity quantity estimator, wherein the measuring unit is used for measuring the working currents, the working voltages and the working temperature of the battery; the observer unit can observe the voltage of the output end of the battery and the voltage of an RC (Resistance Capacitance) parallel circuit of the battery; the adaptability parameter unit can update the parameter values of the battery; the inner voltage estimating unit can estimate the inner voltages of the RC parallel circuit of the battery; the open-circuit voltage estimating unit can compute the static open-circuit voltages of the battery; the battery cycle life computing unit can compute the cycle life value of the battery; and the battery residual electricity quantity estimator can estimate the residual electricity quantity value of the battery.

The invention discloses a virtual prop movement control method, a device, an electronic device and a storage medium, belonging to the computer technical field. The method comprises the following stepsof: displaying a target virtual prop in a virtual scene, wherein the target virtual prop comprises a flight virtual prop and a load virtual prop; determining a target moving trajectory of the targetvirtual prop according to at least one of a first display position and a first speed of the target virtual prop, an environmental condition of the virtual scene and a life value of the flight virtualprop; in the virtual scene, the target virtual prop is controlled to move according to the target moving trajectory. The invention considers the environment condition or the life value of the flight virtual prop, instead of the fixed moving track, and can truly simulate the situation that the flight object in the realistic scene is influenced by the environment factor, the fuel quantity of the flight object or the integrity degree of the flight virtual prop can change the route, and the display efficiency and the display effect of the virtual prop are also improved.

A printer includes at least one replaceable module which is removable from the printer. A processor discontinues an operation of the printer when the processor determines that an end of life value for the replaceable module is reached unless an appropriate identifier is input which allows the operation of the printer to continue beyond the end of life value. The identifier may be provided by a supplier at the end of life point, provided that an order for a replacement module is received.

The invention relates to an electronic energy-saving lamp service life rapid detection method. The existing detection method is long in period and low in efficiency. The method of the invention includes that firstly two groups of electronic energy-saving lamps are placed under high temperature stress condition and subject to constant heat stress accelerated life test, so as to obtain the tested life value; and then the service life of test sample under normal temperature condition is calculated by combining arrhenius model according to the tested life value of the test sample under high temperature stress condition. The invention greatly shortens test and detection time, saves energy source and other experimentation cost and has higher life calculation evaluation accuracy.

A smoke device (100) comprises a smoke box (110), a heating element (120), and an air blowing device (130). The smoke box (110) is provided with a containing cavity (111), an air inlet (113), and an air outlet (115). The air inlet (113) and the air outlet (115) are in communication with the containing cavity (111). The containing cavity (111) is used for containing a tobacco liquid. The heating element (120) is mounted in the containing cavity (111). The heating element (120) generates heat after being powered on so as to atomize the tobacco liquid. The air blowing device (130) is disposed corresponding to the air inlet (113) and is used for blowing an air flow into the containing cavity (111). According to the smoke device (100), the tobacco liquid in the smoke box (110) is heated by means of the heating element (120) so that the tobacco liquid is atomized into smoke, and the smoke is exhausted from the smoke box (110) by means of the air blowing device (130). The smoke device (100) has a compact structure and facilitates the miniaturization design. Also provided are a prompting method and device (20) for prompting state information of a physical game role, and a remote control combat vehicle (30). Prompts are made by emitting different smoke when a life value of a game role is changed and the game role is in the states in which the game role is shot, encounters a land mine, is frozen, is dizzied, sacrifices, and the like.

Data indicating a relationship of life of a battery to a value of load power applied to the battery in discharge and environmental temperature of a place where the battery is installed are prepared beforehand. Next, the load power and the environmental temperature when the battery is discharged are measured, and then a life value corresponding to these measured values is selected from the data so as to be set as an expected life value. Next, a first life reduction amount is calculated from a natural logarithmic function with the number-of-discharges as a variable, and the difference between the expected life value and the first life reduction amount is set to a remaining life value, on the basis of which the life of the nickel-hydride battery is determined. By this method, the life of the nickel-hydride battery as a backup power source can be accurately determined, while correction based on phenomena unique to the nickel-hydride battery is performed.

The invention discloses a prediction method for fatigue reliability of a cable support in a subway tunnel. The method comprises: considering nondeterminacy of model parameters, using a response surface method to generate parameter samples; according to the parameter samples, establishing a finite element model, converting a track irregular spectrum to an irregular spatial waveform, used to adjust node coordinates of steel rail nodes in the model; the steel rail node being provided with a vertical pressed non-pulled unit, used to simulate wheel-rail contact; establishing a train-rail model, a tunnel-soil mass model, and a support-cable model and solving, to obtain stress time-history of the node on the root of the support, amplitude of the node being maximum; using a rain-flow counting method to calculate fatigue life; according to the parameter samples and a fatigue life value to fit the response surface and calculating a reliability index; accordingly, a series of fatigue life target values can be assigned, calculating the corresponding reliability index, so as to draw an invalid exceedance probability curve of the support.

The invention relates to an electric energy meter life evaluation method based on accelerated degradation test. The method comprises the following steps: 1, acquiring electric energy meter accelerateddegradation test data, and estimating the distributed parameter values of a degradation path model of the electric energy meter degradation characteristic quantity under different stress levels; 2, selecting an accelerated degradation model according to the type of acceleration stress, and calculating the false life values of the electric energy meter under different stress levels according to the failure thresholds of the degradation characteristic quantity in the test; 3, calculating acceleration factors corresponding to different stress levels according to the accelerated degradation model, and converting false life values of acceleration factors under different stress levels to the normal work stress level; 4, selecting the life distribution type of an electric energy meter, and estimating the unknown parameter values in a life distribution function; and 5, estimating by utilizing the life distribution function to obtain the life of the electric energy meter under a normal work stress level. Compared with the prior art, the method has the advantages that the life condition of the electric energy meter can be accurately estimated, and more conforms to engineering practice.