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78 results about "Single indicator" patented technology

A single indicator method of deflation is a means of estimating the volume movements of value added directly using only one time series as an indicator (e.g. deflated output or deflated value added) instead of double deflation. Source Publication: SNA 16.68.

Line loss level evaluation method based on power grid characteristic difference

The invention relates to a line loss level evaluation method based on power grid characteristic difference. According to the method, line loss influence integrated factors such as the natural condition, the network structure, the power utilization structure and the power grid operating characteristics of each province or city or county are led in, an original single index only with the line loss rate numerical value size taken into account is changed into an index system which is composed of various indexes affecting line loss, considering the impact of all the indexes on the line loss rate, different weights are set, comprehensive calculation, analysis and evaluation are conducted, so that a scientific index system and evaluation criterion is established, and thus the advancement of the power grid line loss level evaluation method can be guaranteed. According to the line loss level evaluation method based on power grid characteristic difference, the traditional method that the line loss rate size is purely used for evaluating the line loss level before can be broken through, the quantitative evaluation method of the line loss level of a power grid at the same level is provided, the loss reduction potentiality of the power grid is exploited to the maximum degree, and thus the line loss management level of the power grid is improved.
Owner:STATE GRID CORP OF CHINA +2

Multi-parameter aggregative indicator forecasting method of coal petrography dynamic disaster

A multi-parameter aggregative indicator forecasting method of a coal petrography dynamic disaster is suitable for forecasting coal petrography dynamic disasters such as outburst of coal and gas and rock bust of coal and gas in a coal mine excavating process. When various index prediction methods are coupled in the same monitoring system, problems such as how to select importance degrees of various indicators and how to determine a critical value of the various indicators are produced. According to amplitude values of four indicators including electromagnetic radiation, slight shock, acoustic emission and gas density, an average value of the amplitude values in a normal level and the maximum value of the amplitude values of the four indicators when the coal petrography dynamic disasters happen at any moment, the multi-parameter aggregative indicator forecasting method of the coal petrography dynamic disaster determines a single indicator hazard index of the four indicators at the moment. The value of single index hazard index determines single index weights of the four indicators, and therefore an aggregative indicator hazard index of the four indicators is calculated, and finally a danger class of the coal petrography dynamic disaster which happens in an excavating roadway is determined according to the value of the aggregative indicator hazard index. The multi-parameter aggregative indicator forecasting method of the coal petrography dynamic disaster provides a critical value determination method and an early warning standard for the research and development of a multi-parameter monitoring system of the coal petrography dynamic disaster.
Owner:CHINA UNIV OF MINING & TECH (BEIJING)

Spontaneous combustion classification early warning and active classification prevention and control method for coal mine

The invention discloses a spontaneous combustion classification early warning and active classification prevention and control method for mine coal. The method comprises the steps that (1), downhole environmental data is collected; (2), whether ethylene occurs in a downhole coal seam or not is judged; (3), whether the ratio of the change amount of carbon monoxide concentration and the change amount of oxygen concentration is less than the oxidation threshold value or not is judged; (4), whether to start the mine coal spontaneous combustion first-level early warning and implement active first-level prevention and control or not is determined; (5), the mine coal spontaneous combustion first-level early warning and active first-level prevention and control are carried out; (6), the mine coalspontaneous combustion second-level early warning and active second-level prevention and control are carried out; (7), the mine coal spontaneous combustion third-level early warning and active third-level prevention and control are carried out; (8), whether the real-time ratio of ethylene concentration value and ethane concentration value in the downhole coal seam reaches the maximum value or notis judged; and (9), the mine coal spontaneous combustion fourth-level early warning and active fourth-level prevention and control are carried out. The method uses multiple gas indexes to consider therelationship between the change of oxygen concentration and the degree of spontaneous combustion of coal, and avoids an early warning method by means of single index gas, comprehensively and quantitatively analyzing the degree of spontaneous combustion of the coal is achieved, and the accuracy of the early warning is improved.
Owner:XIAN UNIV OF SCI & TECH +1

Motor rotation-clogging state protection method and device, and electronic equipment

The invention provides a motor rotation-clogging state protection method and device, and electronic equipment. The protection method comprises steps that power limiting parameters of an electric driving system, and the rotating speed, the output torque and the current of the motor are collected in real time; the power limiting parameters at least comprise the temperature of an IGBT module, temperature difference of the IGBT module and the rotation-clogging depth of the motor; whether the motor enters a rotation-clogging state or not is determined according to the rotating speed, the output torque and the current of the motor; if yes, for each power limiting parameter of the electric driving system, a limit coefficient value corresponding to the current power limit parameters of the electric drive system is determined by using the pre-established corresponding relationship between the power limit parameters and the limit coefficient, a required torque value of the motor is corrected byusing the minimum limit coefficient value to obtain a target torque value, and the output torque of the motor is set as the target torque. The protection method is advantaged in that a problem that torque adjustment is not timely in a rotation-clogging protection method based on a single index in the prior art can be effectively solved.
Owner:WEICHAI POWER CO LTD

Method for evaluating flavor stability of beer

The invention discloses a method for evaluating the flavor stability of beer. Evaluation indexes of the flavor stability of the beer cover the expression of a series of indexes which can reflect the flavor stability of beer, namely free radicals for reflecting the aging violent degree of the beer, furfural for reflecting thermal loads in the brewing process, 3-(methylthio)propionaldehyde for reflecting the control level of amino acid in the malting process, phenylacetaldehyde for reflecting oxygen loads in the brewing process and trans-2-nonenal for reflecting the fresh degree of raw materials. Compared with single indexes, a flavor stability index (FSI) is a relatively high evaluation index for beer at different aging stages and beer of different qualities and brands. The FSI index for reflecting the flavor stability of the beer is comprehensively refined from an angle of free radical chain reactions covering most of aging reactions in the beer and an angle of a key aging substance influencing the flavor of the beer. The index avoids the one-sidedness of single detection indexes, can intuitively and effectively reflect the flavor stability of the beer, and overcomes the disadvantages of subjectivity and unavailable quantization which are caused by sensory evaluation.
Owner:TSINGTAO BREWERY

Method for evaluating comprehensive indicator of operation of power supply enterprise

InactiveCN108171444AImprove key risk response capabilitiesImprove COPResourcesSingle indicatorEntry point
The present invention discloses a method for evaluating a comprehensive indicator of the operation of a power supply enterprise. The present invention designs an indicator system for evaluating the operation of the power supply enterprise. Based on the general evaluation method that only considers the completed value of the indicator, the change trend of the indicator is increased; the trend scoreand the operation score of the single indicator are respectively calculated according to the weight of the indicator; weighting is carried out according to a certain proportion to obtain a comprehensive score of the indicator; and finally, the comprehensive score of all indicators is superimposed to calculate the comprehensive indicator of the operation of the power supply enterprise. The overalloperating state of the company is evaluated in the form of an indicator; the overall evaluation indicators of the department and the subordinate units are used to decompose and display the operatingstate of each business line; and the advantages and weaknesses of operating condition are presented to form an effective monitoring mechanism, so that an effective entry point is provided for the operation and management of the power supply enterprise while improving enterprise key risk response capabilities.
Owner:STATE GRID SHANDONG ELECTRIC POWER

Method for rapidly and conveniently detecting work fatigue

The invention discloses a method for rapidly and conveniently detecting work fatigue, and belongs to the field of detecting the work fatigue, aiming at overcoming the shortcomings of a conventional detection method which has a single indicator and a long detection duration and is in lack of objectivity. A plurality of sighting marks are adopted for detection; the frequency of each sighting mark drops from a high frequency to a low frequency and then increases to the high frequency, with a same frequency changing rate, different times of beginning to change and random orders of beginning to change. In a detection process, an order, that each sighting mark begins to flicker / not flicker, pointed by a detected object, a critical flicker fusion frequency and a response time are recorded. It can judge whether current data are valid or not in accordance with the sighting mark order pointed by the detected object and can judge the fatigue of the detected object in accordance with the critical flicker fusion frequency and the response time. According to the method disclosed by the invention, the objectivity and the accuracy of acquiring visual neurobehavioral function data can be improved and the learning effect of the detected object can be reduced. Detected data can be conveyed to and stored in a database, so as to further analyze visual neurobehavioral functions; therefore, the fatigue status of the detected object can be analyzed from both transverse evaluation and longitudinal evaluation.
Owner:CHANGCHUN UP OPTOTECH

Method for identifying drainage oil based on finger-print technology

The invention relates to a method for identifying drainage oil based on a finger-print technology, belonging to the field of quality and safety detection of agriculture products. According to the traditional method for identifying the drainage oil, basically, traditional morphological identification and physical and chemical identification are used for identifying the authenticity of the drainage oil and evaluating the good and bad of the drainage oil, so that the traditional method has more human factors, or only concentrates on the individual component of many complex components but neglects many other components in the drainage oil. According to the method for identifying drainage oil based on the finger-print technology, infrared spectroscopy (IR), ultraviolet-visible spectrum and gas chromatography-mass spectrum (GC-MS) are respectively used for establishing a finger-print database, the fatty acid component of an oil sample to be identified is analyzed, and the drainage oil product is identified accurately by combining the result of relative degree of unsaturation (U/R) of the specificity components myristic acid and fatty acid of the drainage oil. Therefore, the problem that the drainage oil is identified only through a few single indexes but cannot be identified completely and accurately at present is solved, furthermore, the established finger-print database is easy to maintain, and the method has good identification accuracy and repeatability, and has a high practical value.
Owner:佛山市技术标准研究院 +1

Method for predicting raw material processing suitability based on BP artificial neural network

The invention discloses a method for predicting raw material processing suitability based on BP artificial neural network, which comprises the following steps: selecting a single index of a processedproduct used for evaluating the raw material processing suitability, and determining a plurality of indexes of related raw materials according to the single index of the processed product; taking manyindexes of raw materials as variables, processing technology and parameters as quantitative raw materials processing, recording and sorting historical data to form samples; taking the raw material index data of the training sample set as the input layer and the single index data of the processed product of the training sample set as the output layer, the model is trained to the artificial neuralnetwork model to be stable performing optimization of artificial neural network model; predicating single indicator of processed products. The invention can relate raw material index and processed product quality, and has high accuracy while seeking complex non-linear correspondence between variables objectively, qualitatively or quantitatively, and can realize predicting processed product qualityqualitatively or quantitatively based on raw material index.
Owner:INST OF AGRO FOOD SCI & TECH CHINESE ACADEMY OF AGRI SCI

Kangshen granule fingerprint construction method and standard fingerprint thereof

The invention belongs to the technical field of traditional Chinese medicinal preparation quality control, and concretely discloses a Kangshen granule fingerprint construction method. The method comprises the following steps: preparing a sample solution and a reference substance solution, determining high performance liquid chromatography conditions, and determining fingerprint; and the high performance liquid chromatography conditions are as follows: octadecylsilane chemically bonded silica is adopted as a filler, the detection wavelength is 270-290 nm, the column temperature is 20-40 DEG C, the flow velocity is 0.8-1.2 ml/min, a mobile phase is composed of a mobile phase A and a mobile phase B, acetonitrile is adopted as the mobile phase A, 0.5-1.5% of a formic acid-water solution is adopted as the mobile phase, and linear gradient elution is carried out. The Kangshen granule fingerprint constructed in the invention is formed by chromatographic information of multiple common peaks, a technology for controlling the quality by using a single index component is changed, and the substance of the granule is systemically and comprehensively reflected, so comprehensive and effective quality control is realized, and the established method good precision, repeatability and stability, and can be used for controlling the inner quality of the Kangshen granule.
Owner:GUANGZHOU YIPINHONG PHARMA +4
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