33results about How to "Lifetime be accurately estimated" patented technology

In a method for predicting the lifetime of a photo-semiconductor device that has a maximum light output value restricted by thermal saturation, the maximum light output value is extracted by measuring the characteristic of light output from the photo-semiconductor device with respect to drive current. The decrease tendency of the maximum output values with respect to drive time is predicted to predict the lifetime of the photo-semiconductor. Further, the predicted lifetime is updated as time passes. Therefore, in this method, even if drive condition changes, or an individual difference of the photo-semiconductor per se is present, it is possible to substantially accurately predict the lifetime of the photo-semiconductor.

The present invention provides a process for forming a bulk monocrystalline gallium nitride by using supercritical ammonia. The process comprises the steps of forming a supercritical solvent containing ion or ions of alkali metals in an autoclave; and dissolving a monocrystalline gallium nitride prepared by flux methods as a feedstock in this supercritical solvent to form a supercritical solution, and simultaneously or separately recrystallizing gallium nitride on the face of a seed.

A battery life predicting device and a battery life predicting method capable of accurately predict the lifetime of storage batteries are provided.

The expected lifetime value selecting unit 7 selects, as an expected lifetime value, a lifetime value that corresponds to the load power applied by the storage battery during discharge and the ambient temperature of the location where the storage battery 3 is installed while referring to the lifetime data stored in the lifetime data storing unit 5, the first diminution in lifetime calculating unit 12a calculates the first diminution in lifetime based on a natural logarithm function that takes the time obtained by converting the number of discharge cycles of the storage battery 3 as a variable, the second diminution in lifetime calculating unit 12b calculates the second diminution in lifetime from the mean value of the storage battery temperatures during charging, discharging or an idle state, the ambient temperature and the time elapsed after the installation of the storage battery 3, and the remaining lifetime value calculating unit 12c calculates the remaining lifetime value by subtracting the first diminution in lifetime and the second diminution in lifetime from the expected lifetime value.

A judging unit determines whether an accumulated rewrite count management table is in a flash memory. If the accumulated rewrite count management table is not in the flash memory, then a generating unit generates an accumulated rewrite count management table in the flash memory, and a recording unit records an accumulated rewrite count in the accumulated rewrite count management table which is generated. A monitoring unit monitors the lifetime of a storage device based on the accumulated rewrite count recorded in the accumulated rewrite count management table and a rewrite count limitative value recorded in the flash memory.

A plasma processing apparatus capable of making an accurate lifetime assessment for each of plural consumable parts (the definition of “the consumable part” is an electrode and/or a nozzle) so that effective use of the consumable parts becomes possible leading to reduced running cost. In the plasma processing apparatus, a plasma arc is generated from a plasma torch composed of an electrode and a nozzle to perform plasma work on a workpiece. Such a plasma processing apparatus includes a plurality of consumable parts, each consumable part being an electrode and/or a nozzle, and further comprises a memory for storing consumption data on every consumable part, the consumption data being used for calculation of consumption; and a display unit for displaying consumption calculated by a CPU for selecting the consumption data corresponding to a consumable part in use.

There are provided a switching-device remaining lifetime diagnosis method and a switching-device remaining lifetime diagnosis apparatus, wherein as status amount history data, there are accumulated status amounts related to a deterioration status of a switching device, estimated based on measurement data obtained through measurement of performance characteristics of the switching device; based on the accumulated status amount history data, there are created a plurality of system data pieces in which the status amounts are arranged with the respective abscissas of an elapsed time during an operation period of the switching device, the number of operations of the switching device, an inoperative time of the switching device, and an accumulated operation time of the switching device; based on the created system data pieces, the remaining lifetime of the switching device is estimated.

A device for estimating the lifetime of the rolling bearing assembly equipped with inner and outer rings and a plurality of rolling elements interposed between respective rolling surfaces of the inner and outer rings is provided. The lifetime estimation device includes a buildup height estimation unit for estimating the buildup height of the indentation, as measured from one of the rolling surface of the inner and outer rings, in which the indentation has been formed, from the depth or the indentation size of the indentation in accordance with a predetermined rule, and a lifetime estimation unit for estimating the lifetime of the rolling bearing assembly in accordance with a rule determined by the relationship between the buildup height of the estimated indentation and the rate of reduction in lifetime of the rolling fatigue life and the dynamic equivalent load.

A flash memory lifetime evaluation method is introduced for dynamically amending, detecting and evaluating an ideal lifetime (or standard lifetime) of a built-in or expanded flash memory of an electronic device, and the method comprises the steps of calculating the ideal lifetime according to the capacity of the flash memory, creating a spare area in at least one of the flash memory and the control center, generating a testing command by the control center and transmitting the testing command to the flash memory such that the flash memory executes a memory test according to the testing command, and the flash memory feeds back a test result to the spare area as an amend parameter according to the memory test, and the control center retrieves the amend parameter stored in the spare area to selectively amend the ideal lifetime by the amend parameter.

A method for estimating a lifetime of an organic EL element comprising a pair of electrodes and an organic layer, comprises: a step of acquiring degradation data of characteristics of the element when a current density applied to the element and/or an atmosphere temperature of the element are/is changed; a step of calculating a fitting function of the degradation data and extracting a degradation parameter characterizing a degradation in the characteristics at the applied current density and/or the atmosphere temperature from the fitting function; a step of calculating a temperature dependence of the degradation parameter based on a temperature rise value of the organic layer upon light emission at the applied current density and/or the atmosphere temperature and setting a lifetime estimation formula of the element; and a step of estimating the lifetime of the organic EL element based on the lifetime estimation formula.

Provided is a battery lifetime estimating method including steps of: fully charging a battery according to a predetermined charging condition; partially discharging the fully charged battery according to a predetermined discharging condition; acquiring voltage information at a plurality of predetermined measurement time points while performing the partially discharging; and estimating a remaining capacity of the battery by using the acquired voltage information. Herein, the step of estimating the remaining capacity of the battery includes steps of: calculating the capacity of the battery in one cycle of fully charging/discharging in which the measurement is performed from the measured voltage drop amounts; and estimating the remaining lifetime of the battery by applying a statistical technique to the capacity of the battery calculated with respect to a plurality of cycles of fully charging/discharging.

A first calculation unit calculates an acceleration factor of lifetime consumption of the light source with as case of a standard temperature and standard drive condition as a reference, a second calculation unit calculates a whole lifetime or remaining lifetime of individual light sources relative to a performance index of the individual light sources or a change rate of the performance index, a computation unit obtains an effective cumulative driving time at which the magnitude of influence imparted on the lifetime is equivalent with a case of driving at the standard temperature and standard drive condition, by calculating a time integral of the acceleration factor, and a recording unit records the effective cumulative driving time and the whole lifetime or remaining lifetime together with an optical output characteristic of the light source.

A laser oscillator enabling estimation of the lifetime of the pump light source by a simple configuration, provided with a pump light source, a power source supplying current to the pump light source, a laser crystal outputting laser light by the pump light emitted from the pump light source, a power sensor receiving laser light generated from the laser crystal and outputting a signal corresponding to the intensity of the laser light, a memory storing the operating time of the laser oscillator, and a processor judging if the signal output by the power sensor satisfies a predetermined condition and, if satisfying the predetermined condition, uses the value of the current supplied by the power source to the pump light source and the operating time stored in the memory to estimate the lifetime of the pump light source.

The present invention aims to provide a disc array device capable of efficiently managing the replacement time of a battery backup unit of the disc array device. Installed environment information and operation state information of a battery backup unit of a disc array device are acquired in the disc array device. If the installed environment is determined as not appropriate from such information, the inappropriateness of the installed environment is notified to the user. If the operation state is not appropriate, the inappropriateness of the operation state is notified to the user. Furthermore, the lifetime of the battery backup unit is predicted and the replacement period is notified to the user.

A turbocharger device includes: a turbocharger (3); and a turbo controller (35) configured to control a waste-gate valve (31) or a variable-displacement mechanism of an exhaust-gas amount supplied to the turbine to control a boost pressure of the turbocharger, the turbo controller (35) including a control calculation part (44) and a sensor signal input part (15) provided separately and independently from an engine controller (33) and being mounted to a compressor housing at a side of the compressor (23b) of the turbocharger (3).