155results about How to "Simplify the evaluation process" patented technology

Disclosed are an inertial-sensor-based wearable hemiplegia rehabilitation apparatus and a strap-down attitude algorithm. The inertial-sensor-based wearable hemiplegia rehabilitation apparatus mainly comprises an upper computer and an inertia measurement system. Inertia measurement units distributed on different body parts of a patient acquire attitude angle information of the patient moving, through inertial sensors; the attitude angle information is transmitted to the upper computer through a wireless transmission module; the upper computer tracks the rehabilitation training process of the patient in real time according to the attitude angle information of different positions. The invention further provides a strap-down attitude algorithm based on plane constraint. According to the method, a restraint plane is established according to previous-moment motion attitudes of a forearm and a postbrachium during moving, the restraint plane is used to restrain acceleration information, systematic self-restrained measurement is achieved accordingly, and angle measurement is better in stability and accuracy. The inertial-sensor-based wearable hemiplegia rehabilitation apparatus and the strap-down attitude algorithm have the advantages that accurate rehabilitation motion attitudes and accurate amount of motion can be provided according to conditions of the patient with hemiplegia, degree and times of completing each set of moves are recorded for the patient, and a function of simple evaluation on hemiplegia and treatment effect for the patient with hemiplegia is provided.

This invention discloses a performance combined test system of a memory server including a test management module and a load generative module set on a customer computer, in which, the first is responsible for setting test parameters to send test order to the load generation module and collects its test result data and calculates and arranges the result data to output them, controlling the whole process of the test. The latter sets up I / O access flow, transfers I / O request messages to the storage server and receives its respond information. This invention uses multiple customer computers to simulate multiple users and accesses the storage server within stimulated time to test its performance expressed under different load conditions.

The invention discloses a method for analyzing and estimating the precision of an inertial device based on the vibration performance. The method comprises the steps of acquiring full-spectrum information transmitted by vibration energy through a vibration source existing in the inertial device during working by analyzing the vibration performance of the vibration source and detecting the frequency spectrum, observing a coupling relation of all constituents in the inertial device according to the structural modes of all the constituents in the inertial device, and accurately calculating the constitution performance of the inertial device. The method is intuitive in characterization, easy to operate and high in detection precision; the precise service life estimation of the inertial device is effectively realized. The method is suitable for the precision estimation of any systems containing vibration excitation.

The invention relates to an image tracking method based on sequential particle swarm optimization, which comprises the following steps: in a present frame image, randomly spreading an individual optimal state group in the last frame image by utilizing state transition distribution; performing the particle swarm optimization iteration on the particles generated after randomly spreading; evaluating an adaptive value of each particle by utilizing an apparent model of a spatially constrained gaussian mixture; updating the individual optimal state and the group optimal state of the particles according to the evaluating results for the adaptive values; and performing the convergence judgment: if meeting a convergence condition, outputting an observed value corresponding to the particle of a group optimal state as a tracking result of the present frame image, and if not, proceeding with the particle swarm optimization iteration. By using the method, the effective target tracking is realized and the application prospect is excellent.

There is provided a multi-antenna measurement method of measuring a device under test 1 having at least two receive antennas and capable of considering the spatial correlation between antennas in a simpler configuration. Two different uncorrelated signal sequences (a, b) are generated by a pseudo base transceiver station. These signal sequences (a, b) are transmitted as radio waves from positions (positions of transmitting antenna elements 31 and 32) of the two base angles of the isosceles triangle toward the device under test 1 provided at a position of the apex angle respectively to measure the received antennas by receive antennas of the device under test 1. This method is easy to calibrate and can consider the spatial correlation between antennas in a simpler configuration.

The invention provides a method for evaluating influence on voltage stability of an AC receiving-end grid from DC accessing. According to the technical scheme of the invention, in a standard looped network which performs equivalent simplification on a hybrid AC / DC system into 'DC-power supply-load', the voltage characteristics under the actions of DC accessing, load dynamics, power supply support and network transmission are comprehensively inspected, a critical fault clearing time is selected as the evaluation index at a load bus, and the influences on the transient voltage stability from a receiving-end AC system are equivalent to the load bus for comparison evaluation. The method brings convenience for simply and efficiently evaluating the influence on the voltage stability of the AC receiving-end grid from a DC accessing mode.

The invention discloses an apparatus for environment corrosion cracking test in a wet hydrogen sulfide environment. The apparatus can realize environment corrosion cracking test at a temperature lower than 75 DEG C in an enclosed circulating solution environment filled with hydrogen sulfide with different concentrations and gas mixtures thereof. The apparatus comprises a corrosion solution storing and circulating container, a solution circulating system, an environment corrosion cracking test sample room and an electrochemical auxiliary device, wherein the corrosion solution storing and circulating container mainly stores a great amount of a solution, the front end of the corrosion solution storing and circulating container can be additionally provided with a gas mixture interface or a gas mixture flowmeter to allow the solution to have different concentrations of hydrogen sulfide, carbon dioxide or the like, the solution circulating system comprises a magnetic drive pump, a rubber ball and a ball valve to realize siphonage at the front end and cut-off of communication with the environment corrosion cracking test sample room, and the environment corrosion cracking test sample room mainly comprises an electrochemical test interface and is used for sealing of a sample and circulation of the solution. The apparatus provided by the invention can substantially reduce leakage of hydrogen sulfide and the solution thereof, improves security of test personnel and environment and is convenient to use and applicable under a wide range of test conditions.

The invention provides a power transformer state evaluation method and system based on electriferous detection. The method comprises the steps that real-time state quantity data of a transformer to be evaluated are obtained; an established evaluation model is used for evaluating the real-time quantity data to obtain a state evaluation result of the transformer to be evaluated, wherein the evaluation model is established according to the initial state quantity of the transformer to be evaluated. According to the evaluation method, the evaluation model which is established in advance is used for accurately reflecting features and attributes of the transformer, the transformer can be overhauled according to the obtained state evaluation result in a targeted mode, preventive measures are taken, thus, the problems that in the prior art, manpower and material resources are wasted and operation and the available rate of a transformer are affected due to the fact that schedule maintenance and corrective maintenance are conducted on the power transformer are solved; moreover, the evaluation process is visual, simple and easy to grasp, and high practicability is achieved.

The invention discloses an evaluation method and device of automobile front collision performance. The evaluation method includes: detecting acceleration of an automobile to acquire an acceleration and time relation curve of the automobile; calculating and acquiring a speed and time relation curve of the automobile according to the acceleration and time relation curve; calculating a safety value of the automobile according to the speed and time relation curve; judging whether a body structure of the automobile meets preset front collision safety requirements or not according to the safety value. The evaluation method is simple, high in stability, less prone to being affected by single factor, more accurate and more complete in evaluation on rigid barrier-avoiding front collision performance, convenient for optimizing the body structure of the automobile and conducive to shortening development period and lowering number of sample automobiles and development cost.

The invention relates to an image-based fingerprint quality evaluation method and device, and electronic equipment. The method comprises the following steps: acquiring a fingerprint image; removing adirect current component in the fingerprint image; carrying out frequency domain transformation on the fingerprint image without the direct current component to obtain a spectrogram of the fingerprintimage, and calculating a spectral energy diagram of the fingerprint image according to the spectrogram of the fingerprint image; extracting fingerprint frequency region features in the spectrum energy diagram; and scoring the fingerprint image according to the fingerprint frequency region features to obtain an evaluation result of the fingerprint image. According to the scheme, the quality of thefingerprint image can be rapidly evaluated, the calculation complexity of fingerprint quality evaluation is reduced, and the fingerprint quality evaluation process is simplified.