34 results about "Endpoint Determination" patented technology

Fluid sensor methods and systems adapted for monitoring and / or controlling distillation operations in fluidic systems, such as batch distillation operations or continuous distillation operations, are disclosed. Preferred embodiments are directed to process monitoring and / or process control for unit operations involving endpoint determination of a distillation, for example, as applied to a liquid-component-switching operation (e.g., a solvent switching operation), a liquid-liquid separation operation, a solute concentration operation, a dispersed-phase concentration operation, among others.

A microscopic change in a luminous intensity occurring near an etching endpoint is accurately detected, whereby the endpoint of etching is quickly determined. An etching endpoint determination method for determining an endpoint of etching processing in a plasma etching apparatus that introduces a processing gas into a vacuum chamber, produces plasma by feeding high-frequency energy to a introduced processing gas, and uses the produced plasma to perform plasma processing on a workpiece stored in the chamber includes: a step of sampling light of a pre-set wavelength from light emitted by the plasma produced in the vacuum chamber, acquiring as time-sequential data the luminous intensity of the sampled light of the specific wavelength, and computing a regression line on the basis of the acquired time-sequential data; and a step of computing distances in a time-base direction between the regression line and the time-sequential data which are obtained at the first step. An endpoint of etching processing is determined based in the distances in the time-base direction obtained at the second step.

A system and method for establishing a journey destination endpoint is disclosed. The system comprises a communication module, a stop classification module and an endpoint establishment module. The communication module receives a stream of data including a first data element and a second data element from a global positioning system. The communication module receives a set of sensor data from one or more sensors. The stop classification module detects a stop for a traveling vehicle based at least in part on the stream of data and the set of sensor data. The stop classification module applies one or more metric criteria to the first data element and the second data element to determine a type of the stop. The endpoint establishment module establishes a journey destination endpoint based on the type of the stop. The endpoint establishment module associates the journey destination endpoint with retrieval identification data.

The invention discloses a liquor ethanol concentration online detection method of a traditional Chinese medicine alcohol precipitation process. The liquor ethanol concentration online detection method comprises the following steps of firstly, pouring Chinese medical extract into an alcohol precipitation tank; starting an agitator blade; adding ethanol and mixing with the Chinese medical extract to obtain alcohol precipitation mixing solution; then starting an alcohol precipitation liquid output pump, transferring the alcohol precipitation mixing solution to a mixed solution settlement tank to obtain clear liquid after multi-stage filtering; transferring the clear liquid to a clear liquid determination pool; finally conveying the clear liquid to the alcohol precipitation tank by a clear liquid reflux pump to form a cycle; determining the density of the clear liquid in the clear liquid determination pool through an on-line densimeter online in real time; calibrating the concentration of ethanol in the clear liquid and the density of the clear liquid; building a corresponding function relation of the ethanol concentration and the density of the clear liquid in the clear liquid; and determining the ethanol concentration in the clear liquid through the corresponding function relation online in real time. Real-time online detection of the liquor ethanol concentration in the alcohol precipitation process is achieved; the liquor ethanol concentration online detection method can be applied to endpoint determination of the alcohol precipitation technology; and the batch stability and the product quality of the alcohol precipitation technology are improved.

The invention provides a voice detection method under noise condition, and belongs to the technical fields of digital signal processing, computer artificial intelligence and pattern recognition. The method comprises the following steps of: converting input signals to a frequency domain, and dividing into subbands; calculating a power spectrum of each subband to form a subband power spectrum; calculating mean-square deviation of the subband power spectrum of each frame, and comparing the mean-square deviation serving as a detection characteristic with an adaptive voice detection threshold to determine whether the current frame contains voice signals; and according to a detection result, adopting a certain endpoint determination strategy to determine an initial position and an ending position of a voice segment.

Methods, systems, and apparatus are described, including computer programs encoded on computer storage media, for determining endpoints of speech. In one aspect, a method includes an act of accessing voice query log data including voice queries uttered by a particular user. The acts also include determining a pause threshold from the voice query log data including the voice query uttered by the particular user based on the voice query log data including the voice query uttered by the particular user. The actions also include receiving an utterance from the particular user. The actions also include determining that the particular user has stopped speaking for a period of time at least equal to a pause threshold. The acts also include processing the utterance as a voice query based on determining that the particular user has stopped speaking for a period of time at least equal to the pause threshold.