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56 results about "Volume balance" patented technology

On Balance Volume (OBV) combines price and volume in an attempt to determine whether price movements are strong or are weak and lacking conviction. On Balance Volume is a simple calculation, which is given below: On a down day, the volume is subtracted from the previous day's OBV.

Daily operation manner arranging and peak-load regulating method based on multi-scene new energy power generation simulation

The invention discloses a daily operation manner arranging and peak-load regulating method based on multi-scene new energy power generation simulation. The method introduces equivalent energy functions into power system unit combination problems, achieves arrangement and computation directly through energy quantity by combining a heuristic algorithm, thereby reducing the computation quantity significantly, being particularly flexible and intuitive when processing power-given generator units, having greater advantages over a power energy volume balancing method and facilitating location of the operational positions of the generator units. What's more, the power energy volume balancing method is to find the load position of the generator units one by one, while the daily operation manner arranging and peak-load regulating method based on multi-scene new energy power generation simulation can convert two or more hydroelectric generator units into an equivalent unit to rapidly find a reasonable load position and to determine whether the operational positions of the generator units can be overlapped and whether the generator units can become one equivalent unit; meanwhile, the daily operation manner arranging and peak-load regulating method based on multi-scene new energy power generation simulation avoids the situation that available water resources cannot be made full use of and achieves full utilization of all hydraulic energy, thereby reducing the electric quantity of thermal generation and reducing the operational cost.
Owner:XI AN JIAOTONG UNIV +2

Mine overall precise wind measurement sensor optimal arrangement method

The invention provides a mine overall precise wind measurement sensor optimal arrangement method. The mine overall precise wind measurement sensor optimal arrangement method comprises the steps that a complete mine ventilation system network topological structure diagram is built; overall ventilation resistance is measured to obtain the initial state of a ventilation system; a sensitivity matrix is obtained; air ducts are divided according to the air duct wind resistance stability and importance; air ducts are divided according to the wind volume measurement necessity, sensitivity and measurability; and according to the air duct classification result and the sensitivity matrix, a ventilation network is simplified, and the optimal wind measurement sensor arrangement scheme is found according to the simplified network through the wind volume balancing law. The mine overall precise wind measurement sensor optimal arrangement method has the advantages that (1) the wind volumes of all the air ducts can be obtained in real time through common air speed sensors and the small mounting number of the air speed sensors, and a feasible solution is provided for ventilation system online analysis state recognition and diagnosis; and (2), as for the air ducts with the low air speeds, the invention provides a mounting method for low-air-speed long-distance air accumulation air speed sensors, the measurement span of the air speed sensors is increased, and the sensitivity of the air speed sensors is improved.
Owner:山东蓝光软件有限公司

Open-pit metal mine goaf treatment method

The invention relates to the field of goaf treatment, in particular to an open-pit metal mine goaf treatment method. The open-pit metal mine goaf treatment method comprises the steps that according to the rock mass and mineral deposit conditions of a mine, combining rock mechanical test data, the roof secure layer thickness of a goaf is determined; detection data of the goaf are obtained; a three-dimensional digital model of the mine is built and comprises a mineral deposit solid model, the mutual relation between the goaf and an open-pit bench and the mutual relation between the goaf and a slope; ground pressure monitoring data are obtained; according the roof secure layer thickness of the goaf, the detection data of the goaf, the three-dimensional digital model of the mine and the ground pressure monitoring data, the treatment occasion and scheme of the goaf are determined; and according to the treatment scheme of the goaf and topographic data acquired before explosion and after explosion, a treatment result of the goaf is evaluated through volume balance, and if the evaluation result is within an allowable error range, construction of the open-pit mine can be normally and orderly conducted. By adoption of the open-pit metal mine goaf treatment method, zero accident occurs during open-pit stripping and mining construction near the goaf, the ore recovery ratio is above 96%, and the ore dilution ratio is below 4%.
Owner:CHINA RAILWAY 19 BUREAU GRP CO LTD

Volume balance control method and device of sound system

ActiveCN106303806ADetermine playback volumeQuickly adjust volumeFrequency/directions obtaining arrangementsVolume balanceComputer science
The invention discloses a volume balance control method of a sound system and a volume balance control device of the sound system. The method comprises steps of obtaining position information of every sound box in the sound system; according to the position information of every sound box, confirming the first display volume of every sound box when the volume balance is reached at the target position; controlling every sound box to display sound according to the corresponding first display volume. The technical plan can rapidly and exactly adjust the display volume of every sound box automatically, thus the target position reaches the volume balance.
Owner:BEIJING XIAOMI MOBILE SOFTWARE CO LTD

Acoustical reflector

InactiveUS6080924AElimination of annoyingElimination of annoying microphone feedbackSaxophonesSound producing devicesVolume balanceScratching
An acoustical reflector (10) formed by a pair of assembled panels (17, 18), each of which including one or more mouths (45) spaced from one another in ring-like fashion about a centrally disposed opening (27) for the reflector (10), the panels (17, 18) rotatably adjustable independently of one another. Each pair of mouths (45) between the panels (17, 18) cooperate to provide a channel (47) through the panels (17, 18) in the adjustability of the panels. Channel (47) is variable in its capacity for transmitting sound through the reflector (10) and for reflecting sound by utilizing the reflecting surface of one of the outer panel faces (either 21 or 22) with a portion of a facing surface (either 23 or 24) of the alternate panel to reflect back the sound to its source or instrument player's ear(s) for a determination of tonal blend, accurate pitch, or volume balance. A grommet 33 is mounted in the centrally disposed openings (27) of the reflector (10) and about which the panels (17, 18) rotate or orient to one another to adjust the enlarging or reducing of the variable capacity of the channel (47) formed by the adjusted mouths (45). A spacer ring (40) on grommet (33) prevents the panels (17, 18) from scratching one another and projections (43) secured on a panel (17) eliminates wobbling, rotation, and scratching of the panels.
Owner:COWEN NORMAN

Process for preparing potassium manganate by liquid phase method

The invention discloses a process for preparing potassium manganate by a liquid phase method. The process comprises the following steps: A) carrying out oxidation reaction on a potassium hydroxide solution and manganese powder under the heating and melting liquid phase condition to obtain a mixture of potassium manganate and molten potassium hydroxide; and B) carrying out solid-liquid separation on the mixture to obtain a potassium manganate crystal. According to the process for preparing potassium manganate by the liquid phase method disclosed by the embodiment of the invention, the hydrothermal separation of potassium manganate and high-temperature liquid alkali can be realized, thereby well solving the volume balance problem of a system, greatly improving the purity of the potassium manganate crystal obtained by hydrothermal separation, improving the quality of the potassium manganate crude crystal and reducing the difficulty of subsequent decontamination; and in addition, molten thermokalite obtained by hydrothermal separation can be directly returned back for burdening so as to be beneficial to good and effective utilization of heat energy.
Owner:YUNNAN JIANSHUI MANGANESE

Single chamber headphone apparatus

A single chamber headphone apparatus and earcup design is provided which enhances wearer comfort, reduces headphone weight, facilitates ease of use, maintenance and operation by providing an improved internal chamber and battery cap configuration. Sound quality is improved by eliminating acoustic problems associated with two-chamber headset designs. A volume balance control is also provided.
Owner:ABLE PLANET

Chemical enterprise wastewater chemical pollutant special factor list construction method and device

The invention discloses a chemical enterprise wastewater chemical pollutant specific factor list construction method and device. The method comprises the steps of determining a reference variable of a wastewater pollutant yield balance basis; establishing a wastewater pollutant output balance model, wherein the balance model is associated with each discharge port; obtaining related information of each reference variable according to the balance model; calculating the total pollutant generation amount of each discharge port; obtaining enterprise pollutant reduction quantity; calculating the pollutant discharge amount of each discharge port according to the pollutant discharge amount = the sum of the total production amount - the reduction amount, and constructing a wastewater pollutant balance data list; and constructing a wastewater chemical pollutant characteristic factor list according to the wastewater pollutant balance data list. According to the invention, complex wastewater production and discharge conditions of enterprises are changed; according to the method, effective and clear-level balance calculation is carried out according to the output volume balance calculation process, so that a waste water pollutant balance calculation data list can be constructed, a clear waste water chemical pollutant characteristic factor list is constructed, calculation of pollutants at all levels in different scenes is realized, and identification of specific components of the pollutants and analysis of a pollution source can be obtained according to the output volume balance calculation process.
Owner:JIANGSU PROVINCIAL ACAD OF ENVIRONMENTAL SCI

Automatic volume adjusting system and method for multimedia terminal equipment

The invention provides an automatic volume adjusting system and method for multimedia terminal equipment. The system comprises a data processing center, a multimedia sound source module, an ambient sound sampling module and a multimedia playing module, wherein the multimedia sound source module, the ambient sound sampling module and the multimedia playing module are independently connected with the data processing center. According to the invention, the data processing center and the environment sound sampling module are arranged to form the audio playing feedback system. The data processing center extracts and compares the environment sound audio feature information with the sound source sound feature information according to the dynamic volume balance calculation module and the human auditory simulation calculation module, and compares the simulated human ear perception volume with the user set volume. According to the method, the volume is adjusted in real time according to the noise change condition in the environment, the space change of the environment and other factors, the adaptive adjustment of the volume is achieved, the human ear hearing is reduced. The working pressureof nerve analysis is reduced. The dual effects of auditory system protection and listening experience optimization are achieved, and real adaptive volume balance can be provided for a user.
Owner:UNIONMANTECH

Method for washing lead anode mud and recovering lead in lead anode mud

The invention discloses a method for washing lead anode mud and recovering lead in the lead anode mud. The method mainly comprises the following steps of first-time filter pressing, stirring acid pickling, second-time filter pressing, first-time purification, second-time purification and the like. The method is short in technological process, low in investment, easy to operate and small in environmental pollution. Lead sulfate obtained through the method is high in grade, a high-purity lead sulfate chemical product can be obtained through simple follow-up treatment, and effective recovery of the lead in the lead anode mud is achieved; and the grade of valuable metal in the anode mud obtained after acid pickling is high, and good raw materials are provided for recycling smelting of the valuable metal subsequently. According to the method, the circulated acid pickling method is adopted, lead oxide is used for deep purification, circulated use of a pickling solution can be achieved, influences of lead electrolysis volume balance are avoided, metal impurities are avoided, and finally the high-grade lead sulfate recovering is achieved.
Owner:ZHUZHOU SMELTER GRP
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