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32results about How to "The result is intuitive and clear" patented technology

Mine pressure signal real-time visual demodulation system and demodulation method based on optical fiber sensing

The present invention relates to a mine pressure signal real-time visual demodulation system and demodulation method based on optical fiber sensing. The demodulation system is mainly formed by a mine pressure signal acquisition subsystem, an optical signal transmission subsystem, a photoelectric signal conversion subsystem and a digital signal visual processing subsystem. A mine pressure signal is collected through arranging an optical fiber sensor in a coal mine, the mine pressure signal is transmitted to an optical fiber grating demodulator for a mine in the form of optical waves and is demodulated into wavelength data, the digital signal visual processing subsystem demodulates the wavelength data into a mine pressure physical quantity and automatically outputs a visual mine pressure chart and a mine pressure monitoring report. The system and the method have the advantages that the demodulation system is comprehensive and diversified, the development performance is high; the system equipment is essentially safe and is especially suitable for a complex underground environment; the demodulation algorithm is professional, and the mine pressure demodulation is more accurate; a demodulation result is clear and visual, and the degree of visualization is high; the system response is timely and effective, the underground mine pressure can be displayed in real time, and the safe and efficient production of a coal mine is ensured.
Owner:CHINA UNIV OF MINING & TECH

A comprehensive evaluation method for sustainable development of urban traffic

The invention discloses a comprehensive evaluation method for urban traffic sustainable development, which belongs to the field of urban traffic transportation system development evaluation, and comprises the following steps: (1) constructing an evaluation index system according to a TISP framework, and grading evaluation results; (2) determining a grading standard of the index according to the related national standard and the city scale; (3) calculating digital features of the cloud model by combining a multi-dimensional cloud model theory according to each index grading standard; (3) inputting digital characteristics of the cloud model, and generating a normal random number corresponding to the evaluation level by a multi-dimensional forward normal cloud generator; (4) calculating an index weight by adopting an AHP method; And (5) inputting actual measurement values of urban traffic system indexes, calculating the certainty degree belonging to each level by utilizing a comprehensivecertainty degree formula, and judging the comprehensive evaluation level according to a maximum certainty degree principle. The method is simple in step, efficient in calculation and clear in result,and has important reference significance for sustainable development evaluation of the urban transportation system.
Owner:SOUTHEAST UNIV

ECT sensor structure optimization and electromagnetic field analysis method

The invention belongs to the technical field of concrete durability monitoring. The invention particularly relates to an ECT sensor structure optimization and electromagnetic field analysis method. The technological process comprises eight steps including parameter setting, geometric setting, material setting, mesh generation, physical field setting, solving, sensor structure optimization and electromagnetic field distribution calculation. A new idea is provided for solving the positive problem of an ECT system based on software COMSOL. After modeling is completed, the uniformity degree of thesensitive field of an ECT sensor is analyzed through a calculation result, structure parameter values of all parts of the ECT sensor are adjusted, an optimal design scheme is searched for, meanwhile,change of the internal electromagnetic field when a concrete structure contains water can be visually and clearly observed, the relation between the internal moisture content of the concrete structure and the relative dielectric constant is obtained, the accuracy of imaging the internal moisture content of the concrete structure through the ECT technology is improved, and a new verification method is provided for the durability test of the concrete structure.
Owner:QINGDAO TECHNOLOGICAL UNIVERSITY

Evaluation method and device for boiler shutdown protection anti-corrosion effect of thermal power generating unit

The invention provides an evaluation method and device for the boiler shutdown protection anti-corrosion effect of a thermal power generating unit. Operation is easy, implementation is easy, the anti-corrosion condition in a huge coal-fired boiler water vapor system pipeline in the boiler shutdown protection state can be effectively mastered, and whether the currently-adopted coal-fired boiler shutdown protection method is reliable and effective or not is judged. The evaluation method for the boiler shutdown protection anti-corrosion effect of the thermal power generating unit comprises the steps that the accumulated flow of a condensate pump outlet in the unit starting stage is measured; the mass content of iron in the water vapor related to the boiler heating surface in the unit starting stage is measured, and calculation is performed to obtain the average value of the iron content in the water vapor related to the boiler heating surface; according to the accumulated flow and the iron content average value, the total iron content of the unit in the starting stage is calculated through a preset total iron amount fitting formula; and the total iron content is used as an evaluation index to evaluate the blowing-out protection anti-corrosion effect of the unit before the unit is started at the time.
Owner:XIAN THERMAL POWER RES INST CO LTD

Device for rapidly detecting the minimum bacteriostatic concentration of Neisseria gonorrhoeae, preparation method and detection method thereof

The invention discloses a device for rapidly detecting the minimum bacteriostatic concentration of Neisseria gonorrhoeae. The device comprises a test platform, the test platform comprises a base layer, a test layer and a feed layer, the test layer is composited between that base layer and the feed layer, a feeding hole is arranged on the feed layer, a testing area is arranged on the testing layercorresponding to the position of each feeding hole, the testing area is isolated from the blank position on the testing layer through a first partition structure, a second partition structure is arranged between each testing area and other adjacent testing areas, and partitions are arranged in the first partition structure and the second partition structure. The invention also discloses a preparation method of the device, and also discloses a detection method for rapidly detecting the minimum bacteriostatic concentration of Neisseria gonorrhoeae. The detection device of the invention has simple structural design and convenient carrying; the preparation method of the detection device is simple and the cost is low; the detection method of the invention can simply test the minimum inhibitoryconcentration of antibiotics, and the result is accurate.
Owner:ZHEJIANG UNIV
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