148 results about "Test comparison" patented technology

A filter capacitor within a phase-locked loop (PLL) can be tested using a built-in test circuit. The PLL's charge pump is deactivated while a test-current source is activated to supply a test current to the PLL filter capacitor. When the test current is larger than any leakage currents through the capacitor, the capacitor's voltage rises above a reference voltage. A test comparator compares the capacitor's voltage to the reference voltage and signals a good test result when the capacitor's voltage rises above the reference voltage. When leakage current is larger than the test current, the capacitor's voltage cannot rise above the reference voltage and the test comparator signal a leakage failure. The test current source can share a bias voltage with the charge pump and can drive the capacitor to a voltage higher than the charge pump does to increase leakage and stress during testing.

The invention discloses a three-dimensional reconstruction method for a concrete CT (computed tomography) image, comprising the following steps of: firstly, performing tomography on a concrete test sample by a CT machine; secondly, performing three-dimensional reconstruction on the concrete CT image by using a ray-casting algorithm, so as to obtain real images of aggregates, mortar and holes; and finally, performing three-dimensional stereo reconstruction on the concrete CT image by using a visualization tool VTK (visualization tool kit). The three-dimensional reconstruction method for the concrete CT (computed tomography) image, disclosed by the invention, has the advantages of being strong in real-time performance, high in operation efficiency, and capable of clearly and reliably distinguishing the aggregates, the mortar and the holes. A real meso-structure model of concrete can be obtained through a three-dimensional reconstruction result, the three-dimensional reconstruction result can be subjected to a test comparison with a concrete mesoscopic numerical simulation result, and a numerical analysis model is corrected.

Methods and systems to provide a score regarding the uniqueness and individuality of personal information that may be used in the process of electronic transactions for the determination of a person(s) identity. Such may be employed to limit identity theft, prevent potential insurance fraud, and be incorporated into other processes and methods to enhance the quality of identity credentials and information electronically. The comparisons that determine the above are determined from data information that is accurate and represented by the owner as accurate and true. The database containing these records is queried by the system to identify correlations. Instances where information matches across multiple records and/or highly unique fields result in a higher rated score then those that do not. A matched record does not indicate or represent fraud in itself, only that the match indicates the information no longer substantiates the uniqueness of the information and the resulting assurance of the possessor and owner are the same.

The invention relates to a method for evaluating aging degree of a crosslinked polyethylene cable based on nuclear magnetic resonance. The method comprises the following steps of: testing and comparing a molecular structure of the crosslinked polyethylene cable under different aging degrees through a nuclear magnetic resonance analyzer, and obtaining a proportional relation among the crosslinked polyethylene aging degrees, the temperature and the time, thus obtaining an aging state and residual service life of the crosslinked polyethylene cable to be evaluated according to the proportional relation. According to the method, the aging performance of an insulating material is detected from a micro perspective.

The invention relates to a pavement base course material prepared from brick mixed building rubbish regenerated aggregate and a construction method thereof. A regenerated inorganic binder stable material layer with the thickness of 180-800 mm is constructed above a lower bearing layer, and a road pavement layer is constructed above the regenerated inorganic binder stable material layer; the regenerated inorganic binder stable material layer is formed by mixing brick mixed building rubbish regenerated aggregate grains and common aggregate and base gelation power and is divided into one layer to four layers, and every small layer selects one of three mixture ratios. The invention adopts the brick mixed building rubbish regenerated aggregate as a main raw material. By applying the brick mixed building rubbish regenerated aggregate to pavement materials, the invention solves the problems of low utilization rate, narrow range of application, small application quantity and the like of the brick mixed building rubbish. The application performance of the pavement base course material not only can meet the prior standard and the practical application condition requirement of engineering, but also has relatively better durability and mechanical property by test comparison of freeze thawing, strength and the like.

The invention discloses an intelligent height and weight measuring system which solves the problem of large measurement error and lack of monitoring and analyzing capability in the prior art. The intelligent height and weight measuring system comprises an intelligent height and weight measuring instrument, an APP client and a server, wherein the intelligent height and weight measuring instrument serves as a terminal for acquiring and processing children's height and weight data and transmits the acquired data to the APP client on an intelligent mobile device through wireless data transmission, and the APP client transmits the received data to the server on a cloud side through the internet. When the intelligent height and weight measuring system is in use, the APP client stores height and weight data measured by the intelligent height and weight measuring instrument and visually display growth conditions and trend of children in a graphic mode, the geographical locations where children to be monitored are located can be positioned by means of a GPS positioning function of the intelligent mobile device, and height and weight comparison between the children to be monitored and their peers in the city where the children to be monitored are located can be analyzed. Therefore, the intelligent height and weight measuring system has capability to monitor children's physical growth and development for a long time.

The invention relates to a method for movie recommendation on the basis of an orthogonal and cluster pruning based improved multi-objective genetic algorithm. An improved algorithm OTNSGA-II is provided aiming at defects in distributivity and convergence of NSGA-II (non-dominated sorting genetic algorithm-II) and can be used for solving various multi-objective function optimization problems. By design of fault multi-objective orthogonal experiment initialization population, distributive deficiency caused by individual nonuniformity is avoided; by application of self-adaptive cluster pruning strategies, a population evolution process is maintained, and inferior individuals in an appropriate quantity are removed to keep convergence and distributivity of the population. By combination with information mining of user behaviors and movie properties, the algorithm is applied to solving of a practical problem of personalized movie recommendation, universality and effectiveness of the algorithm are explained by test comparison with existing algorithms, better recommendation results are obtained, recommendation accuracy rate, recall rate and coverage rate are increased, rich recommendation scheme combinations are provided, and interest points of users can be mined beneficially to provide more reliable recommendation services.

The invention relates to method and apparatus for processing computer graphics. When an alpha test is performed as part of the rendering process in a multisampled graphics processing pipeline, rather than taking the single alpha value initially defined for each fragment 80, 81, 82, 83, an individual alpha value is generated in respect of each of covered sampling position that the fragment in question is being used to render. The individual alpha values estimated for each sample position are then individually compared with a threshold alpha value defined for the alpha test, and the result of this alpha test comparison is used to decide either keep or discard the sample position from further processing.

A multi-channel current type radiation detecting real-time comparison measuring device is provided. The multi-channel current type radiation detecting real-time comparison measuring device comprises one to eight magnification and I-V conversion circuits and measuring range control circuits, one eight-channel A/D conversion circuit, one central control unit, a circuit for providing a voltage reference to the A/D conversion circuit, a circuit for providing clock signals to the A/D conversion circuit, a touch control liquid crystal display terminal and a power source switching shunt circuit unit. According to the multi-channel current type radiation detecting real-time comparison measuring device of the invention, a decoding circuit and a photoelectric isolation circuit are connected in series with the measuring range control circuits in a combined manner, such that automatic measuring range switching of 32 measuring ranges in eight channels, and therefore, the measuring range of the system can be expanded, and program control and digital crosstalk-resisting abilities can be improved. The multi-channel current type radiation detecting real-time comparison measuring device of the invention can measure multi-channel wide-dynamic-range weak current, perform real-time display, recording and comparison, and can be applied to radiation detection.

The invention provides a semiconductor side pumping module. By adopting the multidirectional even pumping technology, the side wall of a guide quartz tube is provided with a high reflection film and an anti-reflection film by segmenting for pumping light to reduce the loss of the pumping light; and a laser crystal combining a screw thread manufactured on the lateral surface and an un-doped matrix bonded on the end face is adopted for improving the absorption efficiency of the pumping light and reducing the end face effect and thermal lens effect of the laser crystal so as to improve the conversion efficiency and light beam quality of a laser. The guide quartz tube respectively adopts segmented film coating and non film coating on the side wall to carry out test comparison; when the pumping power is 1KW, the segmented film coating efficiency is improved by 16 percent compared with the non film coating efficiency; and in the state that the guide quartz tube is not coated with a film, when the pumping power is 1KW, the conversion efficiency of the laser crystal combining the screw thread manufactured on the lateral surface and the un-doped matrix bonded on the end face is improved by 9 percent compared with a common laser crystal, the thermal focal distance is shortened by about 12 percent, and the light beam quality M value is reduced by 17 percent.

The invention relates to a covariance convolutional neural network-based low-contrast image saliency detection method. The method comprises the steps of extracting low-level visual features of an image in a training set by taking a pixel as a unit; constructing a regional covariance based on a multidimensional eigenvector consisting of the low-level visual features; building a convolutional neuralnetwork model by taking a covariance matrix as a training sample; and based on local and global contrast principles, calculating image saliency. By performing test comparison on existing MSRA data set, SOD data set, CSSD data set, DUT-OMRON data set and PASCAL-S data set and an NI data set in the method, the method improves the robustness of conventional saliency detection, can effectively obtaina more accurate saliency map, can well extract a saliency target especially for the low-contrast image, and provides a very good solution for hot problems of night security monitoring, complex environment target locating and the like.

The invention provides a face recognition attendance checking method based on width learning. The face recognition attendance checking method based on width learning comprises the steps that a certainnumber of to-be-checked face images are collected and integrated into a database; preprocessing the face image; carrying out face detection to position an image area where the face features are located; carrying out static feature extraction to construct a face feature library, and dividing the face feature library into a training set and a test set; performing training of a width learning network by using the training set, constructing a width learning basic model, performing test comparison by using the test set and the trained width learning network, and performing test comparison to obtain a misjudged face image; collecting misjudgment face images during test comparison as a new feature vector set, and performing incremental learning on the width learning basic model to optimize the width learning basic model; and performing face recognition on the to-be-checked person, matching a face recognition result with the identity information in the database, making a corresponding check-in record, and storing the check-in record information in the database.

The invention discloses a fatigue driving electroencephalogram monitoring method based on multi-threshold comparison. The fatigue driving electroencephalogram monitoring method comprises the following steps of step 1, acquiring an electroencephalogram signal: acquiring and pre-treating the electroencephalogram signal of a driver by using an electroencephalogram signal acquiring device, and synchronously transmitting the electroencephalogram signal to an electroencephalogram signal monitoring device; step 2, carrying out analysis treatment on the electroencephalogram signal: carrying out the analysis treatment on the electroencephalogram signal which is acquired and pre-treated by the electroencephalogram signal acquiring device within each second according to the sequence of sampling time, and judging whether the driver is at a fatigue driving state or not at the moment according to an analysis treatment result. The process of carrying out the analysis treatment on the electroencephalogram signal which is acquired and pre-treated within any second comprises the following steps: synchronously storing the electroencephalogram signal, extracting a characteristic signal, determining a characteristic quantity, carrying out the multi-threshold comparison and judging the fatigue driving. The method disclosed by the invention has simple steps, a reasonable design, is convenient to realize and has good use effects; the fatigue driving state of the driver can be conveniently, simply, rapidly and accurately monitored.

The invention relates to a road test-simulated standard-state fuel consumption detection method based on a bench test, which comprises the following steps: calculating or determining the system resistance F2 of an automobile at each specified point in a neutral-gear road test in case of zero load or full load, performing a zero-load bench test on the automobile to detect the resistance F1 of the entire transmission system of the neutral-gear automobile and a chassis dynamometer at each specified point, correcting F2 with a power correction factor into an engine driving force F2D under the current bench test environmental condition, calculating the loading force F3 of a power absorption device on the surface of a drum according to a formula F3=F2D-F1, loading the force constantly, and enabling a driver to adjust and stabilize the position of the accelerator pedal to detect the fuel consumption at a constant speed. When repeated tests are required for optimizing the fuel consumption design of the automobile, the bench test can be repeated as long as the road test is performed once. The invention has the advantages of apparent test comparison, high accuracy and simple, fast and convenient operation.

The invention relates to the technical field of loudspeaker boxes, and in particular to an audio power amplifier testing system and an audio power amplifier testing method. The system comprises an audio power amplifier to be tested, a signal generator module, an audio card module, a separate source channel module, a first signal collection module, a load module, a second signal collection module and a test selection controlling module, wherein the signal generator module, the audio card module, the separate source channel module, the audio power amplifier to be tested and the load module are electrically connected in sequence; the audio card module and the audio power amplifier to be tested are also electrically connected by the first signal collection module; the second collection module is electrically connected with the audio card module; the second collection module, the signal generator module, the separate source channel module and the first signal collection module are respectively electrically connected with the test selection controlling module; the testing system and method are relatively low in testing cost and the test is relatively convenient.

The invention relates to a movie recommendation method using an improved multi-objective genetic algorithm based on grid and difference substitution, provides an improved algorithm GDNSGA (Gradient Descent Non-dominated Sorting Genetic Algorithm)-II for defects of distribution and convergence in an NSGA (Non-dominated Sorting Genetic Algorithm)-II, and can be used for solving the problem of multi-objective combinational optimization. In the algorithm, an initialization population is designed by use of a multi-objective grid partition mode, thus the loss of distribution caused by non-uniform individuals is avoided; a population evolutionary process is maintained by use of clustering selection and difference substitution operators; and the appropriate number of inferior individuals is selected for local search, and the convergence and distribution of the population are kept. In combination with exploring of user behaviors and movie properties, the algorithm is used for the practical problem of personalized recommendation of a movie; through test comparison between the algorithm and an existing algorithm, the universality and effectiveness of the algorithm are explained, an excellent recommendation result is obtained; and the recommended F harmonic rate, diversity and novelty are improved, and an abundant recommended scheme combination is provided, thereby being beneficial to fully exploring the interest of a user, and providing a reliable recommendation service.

The invention relates to a method and test system for batch testing speech identification and text synthesis. The method comprises steps that (1), the existing ASR and TTS technology jar package (so package) is integrated into the test system; (2), a to-be-tested function is selected; (3), a configured Config configuration file push in the PC is configured to test equipment according to the selected to-be-tested function; (4), the information in the configured file is checked; (5), function test is performed; and (6), a corresponding script is run to calculate the result, and the result is compared with the corresponding standard test result. The test system is characterized by comprising a control module, a storage module, an input module, a file sending module, a speech output module, afile receiving module, a test comparison module and a test result output module. The method and the test system are advantaged in that the whole process of speech identification and text synthesis from sending test data to result statistics is integrated, and work efficiency is greatly improved.

The invention discloses a full-independent hybrid power take-away food distribution device used within the scope of schools and communities. The full-independent hybrid power take-away food distribution device comprises a take-away food distribution robot and a solar charging base station; the take-away food distribution robot comprises a walking module, an inertial sensor, laser radar, a binocular camera, a GPRS module, an FPGA data processing unit, an ARM central control unit, a power supply management module, a battery module and a control panel; and the walking module consists of motors, vehicle wheels, a chassis and bearings. An optimal path is determined by a map planning and test comparison method, and is stored in a server of the take-away food distribution robot; path navigation is carried out by the mode of combining GPS location and inertial navigation, data of a GPS and that of the inertial sensor are fused to obtain accurate navigation data by using a sensor fusion technology based on Kalman filtering, and take-away food is delivered to a destination through the path navigation. Electric energy required by a system is provided by the efficient solar charging base station. The safety of the schools is improved substantially, and the full-independent hybrid power take-away food distribution device is energy-saving, safe, and environment-friendly.

Provided is a traffic signal timing optimization method based on principal component analysis and a local search improvement orthogonality genetic algorithm. The algorithm is provided by analyzing internal relation among the genetic algorithm, image processing and mode recognition and can be used for solving various function optimization problems. By means of the algorithm, an improvement orthogonality cross operator based on principal component analysis is provided. The operator first conducts PCA projection on the population before cross, individual length is reduced during cross, orthogonal cross operation is implemented on the projection area, the projection is projected to the original space after cross, redundant individual number and calculation expenses caused by redundancy are reduced, algorithm convergence speed is further improved, and the local search strategy is further introduced. The algorithm is applied to single-crossing signal timing optimization. By means of testing comparison with the existing algorithm, the method improves algorithm generality and efficiency, effective timing time is acquired, and the number of the queuing vehicles in front of a crossing is reduced.

The invention discloses a liquid chromatography tandem mass spectrometry for detecting various pesticides in plant foods. The method comprises the following steps of parameter setting, test comparison, and qualitative and quantitative determination. After the above steps are adopted, the pretreatment process of pesticide residues in plant foods is simplified, the sample pretreatment conditions andinstrument parameters are optimized, and the experiment efficiency is improved; the interference of a sample matrix is well removed; and the test items are more, 52 kinds of common pesticides can bedetected, and the speed is high, so that the pesticide detection requirements of product export in China are met.