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36results about How to "Judgment realized" patented technology

Biomechanical property testing method for blood vessel prosthesis and device thereof

The invention belongs to the technical field of medical biomaterial property test, and particularly relates to a biomechanical property testing device and a testing method for blood vessel prosthesis. The testing device includes a liquid storage box, a current guide silicon tube, an electronic peristaltic pump, a current limit switch, a conducting wire, a computer mounted with signal processing and converting software and data output equipment as well as a sample fixing device, a pressure testing device and a displacement testing device. By utilizing the device, the relation curve of the pressure and the tube diameter is measured and recorded in real time, so that the detecting results of compliance, fatigue resistance and bursting pressure are calculated and obtained, and the biomechanical properties of the blood vessel prosthesis are scientifically tested and evaluated; therefore, the technical problem of testing the biomechanical properties of the integral blood vessel prosthesis under the existing physiological status is solved, the integral testing and evaluation of the compliance, the fatigue resistance and the bursting pressure of the blood vessel prosthesis are realized, and scientific and reliable evidences are provided for choosing the blood vessel prosthesis with the biomechanical properties meeting the requirements.
Owner:SUZHOU UNIV +1

Calibration apparatus and calibration method applied to vibration sensor

The invention discloses a calibration apparatus applied to a vibration sensor. The calibration apparatus comprises a control acquisition instrument and a vibration standard device in signal connection with the control acquisition instrument. The control acquisition instrument comprises a control module and an acquisition module; a network terminal transmits signals to the vibration standard device through the control module to enable the vibration standard device to generate corresponding vibration; the vibration standard device outputs standard vibration signals and transmits the standard vibration signals to the network terminal through the acquisition module; and at the same time, a vibration sensor to be detected senses the vibration signals generated by the vibration standard device and transmits the vibration signals to the network terminal through the acquisition module. According to the invention, work of the vibration standard device is controlled remotely through the network terminal, comparison processing is performed on the standard vibration signals and the vibration signals transmitted by the vibration sensor to be detected in the network terminal, handover of the vibration senor to be detected to a metering calibration mechanism is unnecessary, calibration can be realized in a work field, the structure is simple, and the portability is high. The invention also simultaneously provides a calibration method applied to a vibration sensor.
Owner:HUNAN INST OF METROLOGY & TEST +1

Method for determine cavitation and evaluating condition of vane pump and system thereof

A method for determining cavitation and evaluating conditions of a vane pump and a system thereof are disclosed. The method includes the following steps: collecting pump inlet and outlet pressure, liquid-borne noise and solid-borne vibration and flow rate, selecting the cavitation judgement mode according to the flow rate condition; under the constant flow rate condition, determining the total value threshold of solid-borne vibration and liquid-borne noise cavitation signal by the test method, and putting forward the cavitation judgement method using the total value method, which has higher reliability and accuracy than the traditional cavitation judgement method; obtaining the frequency range with high sensitivity to cavitation in variable flow condition, determining the threshold value of cavitation frequency band, and using the method of frequency band broadband value to determine cavitation. The invention has the advantages of strong anti-interference, high reliability, accurate evaluation standard, high cavitation sensitivity, strong applicability, convenient operation and the like, and can effectively improve the operation reliability of the pump, reduce the damage of the cavitation to the pump and prolong the working life of the pump.
Owner:JIANGSU UNIV

Method and system for judging old and new degree of circuit board based on electrical inspection

The invention discloses a method and system for judging the old and new degree of a circuit board based on electrical inspection, and belongs to the technical field of circuit board detection. The method for judging the old and new degree includes the following steps that the circuit board is fixed, and an electric signal detection probe is placed on a preset bonding pad; a detection circuit is set to supply excitation to the two ends of the bonding pad of the circuit board; elements on the circuit board are excited and driven to operate and generate electric signals, and then the electric signal detection probe collects detection electric signals output by the bonding pad; the acquired detection electric signals are compared with standard electric signals according to preset judgment indexes; the judgment result is output according to the comparison result. By the utilization of the method and system for judging the old and new degree, the old and new degree of the circuit board can be judged, and the method has the advantages of being accurate, rapid and capable of improving detection efficiency and reducing man-made judgment difficulties and errors, can be widely used for detecting components of the circuit board, and is especially suitable for detecting import electromechanical machines on import ports of the whole country.
Owner:GUANGZHOU HUAGONG MOTOR VEHICLE INSPECTION TECH +1

Data processing device and method for transformer area electric energy quality monitoring data

The invention discloses a data processing device and method for transformer area electric energy quality monitoring data. The method comprises the steps: obtaining original sampling data, carrying outthe caching of the original sampling data, and enabling the original sampling data to be obtained after the signal conditioning and calculation of a three-phase voltage signal and a three-phase current signal; calculating the original sampling data to obtain a frequency calculation result; according to the frequency calculation result, carrying out signal extraction on the original data stored inthe data cache region to obtain a complete cycle signal, and using the complete cycle signal for electric energy quality monitoring steady-state data calculation and electric energy quality monitoring transient event judgment. According to the device and method disclosed in the invention, original data processing and complete cycle signal extraction and application are carried out, and thereforecalculation of station area power quality monitoring steady-state data and determination of transient events are realized. The hardware cost can be reduced, district metering (measurement and control)and power quality monitoring service application are supported, and the special requirements of power quality monitoring on data quality are met.
Owner:STATE GRID INFORMATION & TELECOMM GRP

Rapid determination method for coal-bed methanogen flora current activity and flora balance characteristic

A rapid determination method for coal-bed methanogen flora current activity and flora balance characteristic belongs to determination methods for coal-bed methanogen flora activity and balance. According to the determination method for coal-bed methanogen flora current activity and flora balance characteristic, synchronous testing is performed through functional medium culturing and coal-base medium culturing, wherein in functional medium culturing, controllable factors are utilized to determine the structure integrity and activated possibility of a to-be tested microflora; and in the coal-based medium culturing, an actual coal sample is utilized for performing culturing determination on bacterial strain so as to determine whether a to-be determined bacterial strain can be activated and cultured and can finish biogasification of coal by taking organic matters in specific coal as a basic carbon source in a real coal bed environment. Functional medium culturing results are used to provide reference parameters for the determination method, and coal-based medium culturing results are taken as variable parameters, so that the balance of the activated microbiota in the coal bed is obtained. The method is capable of realizing miniaturization of a testing system, and has the characteristics of being rapid in execution, fast in effectiveness and high in accuracy.
Owner:CHINA UNIV OF MINING & TECH

Cigarette air leakage defect on-line diagnosis method

The invention relates to a cigarette air leakage defect on-line diagnosis method. The invention comprises: a cigarette making machine electric control system and a data acquisition device, which are connected to an industrial Ethernet; an application server, which is used for storing data acquired by the data acquisition device into a relational database; a relational database server, which is used for storing statistical results of a gas leakage defect judgment knowledge base, an analysis model and big data analysis; a real-time historical database, which is used for storing original data and change values of collected indexes; and a data analysis server, which is used for cleaning and analyzing gas leakage defect indexes and factor index data: further analyzing whether the data of related factors are varied or not by utilizing an established data analysis model, and if the data of the related factors are varied, according to parameters, positioning links and point locations with abnormal gas leakage detection values, and pushing diagnosis information to equipment and process personnel to adjust equipment and process parameters. According to the method, the control level of the technological process can be greatly improved, and a foundation can be laid for intelligent manufacturing of cigarette procedures.
Owner:CHINA TOBACCO ZHEJIANG IND

Multi-agent collaborative decision-making method and system for uncertain events

The invention provides a multi-agent collaborative decision-making method and system for uncertain events. Compared with the prior art, the embodiment of the invention has the advantages that relative situation advantages can be constructed on the basis of parameters of two confronting parties, a basic reliability distribution function is constructed to solve and obtain basic reliability distribution of weapon sources, and selectable values and corresponding weights of agent performance can be set on the basis of the basic reliability distribution of the weapon sources; sub-optimization objectives corresponding to the number of selectable values of the agent performance are constructed; an agent performance advantage matrix of the two confronting parties is further constructed, and a payment function of each sub-optimization target is designed, so as to construct a high-dimensional matrix of the two confronting parties for evaluating a total strategy space; and finally, solving is conducted based on the high-dimensional matrixes of the two confronting parties, and a Nash equilibrium solution is outputted. The method does not need to depend on radar performance, and can achieve the judgment of a weapon source when radar judgment fails or the radar precision is not high and the capability is not strong, so as to make a decision.
Owner:HEFEI UNIV OF TECH

Washing machine and drying judging method and device thereof

The invention discloses a washing machine drying determination method, device and a washing machine; the method comprises the following steps: when the washing machine enters a washing mode, motor weighting is carried out for clothes in a washing machine barrel, thus obtaining a first weight value of the clothes in the barrel; when the washing machine enters a drying mode, temperature change value in the barrel of the washing machine is detected in real time; when the temperature change value in the barrel is bigger than or equal to a first preset threshold, the washing machine is controlled to operate in the drying mode for a preset time; after the preset operation time, determining whether the temperature change value in the barrel in the present time is bigger than or equal to a second preset threshold or not; if not, motor weighing is carried out for the clothes in the barrel, thus obtaining a second weighing value of the clothes in the barrel; determining whether the second weighting value is smaller than or equal to the first weighting value; if yes, then the clothes in the barrel is dried, and the washing machine is controlled to quit the drying mode. The method combines temperature determination with motor weighting determination, thus improving determining accuracy.
Owner:WUXI LITTLE SWAN ELECTRIC CO LTD
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