60results about How to "Test results are obvious" patented technology

The invention discloses a face recognition method based on the combination of local features and global features. The face recognition method comprises the steps that first, faces in an existing face database are extracted to train a training set; second, a grayscale image of an input face is extracted; third, main component features of the input face are extracted and recognized; fourth, local binary features of the input face are extracted and recognized; fifth, the main component features and the local binary features of the input face are weighted; sixth, the face matched with the input face is searched for in the existing face training set and output. The face recognition method improves the recognition rate of face recognition, combines two types of algorithms, and is wide in application prospect.

The invention discloses a device for measuring a Seebeck coefficient and a method of the device. The device comprises a main heater, an assistant heater, a first insulated thermal conductor, a second insulated thermal conductor, a first main probe, a first assistant probe, a second main probe, a second assistant probe, a first main thermocouple, a first assistant thermocouple, a second main thermocouple and a second assistant thermocouple; the first insulated thermal conductor and the second insulated thermal conductor are both used for carrying a sample to be measured; the first main probe, the first assistant probe, the second main probe and the second assistant probe are used for measuring the electric potential of the sample to be measured; the first main thermocouple, the first assistant thermocouple, the second main thermocouple and the second assistant thermocouple are used for measuring the temperature of the sample to be measured. The morphology of the measured sample can be flexible and diverse, the device can measure the material Seebeck coefficients under the different temperature conditions and is simple in structure, and due to the fact that the measurement method that an average value is resolved through multiple sets of the Seebeck coefficients which are resolved on the basis of the four probes is adopted, the measured Seebeck coefficient is high in measurement accuracy.

The invention relates to a pigment dispersion resin used for an acrylic series cathode electrophoretic coating and a pigment slurry thereof. The dispersion resin is a quaternary ammonium salt modified acrylic resin, and is prepared by subjecting a quaternizing agent and epoxy group-containing acrylic resin to a heating reaction in a solvent. Active hydrogen and an epoxy group are in a mole ratio of 0.8-1.5:1. The quaternizing agent is the reaction product of an active hydrogen-containing tertiary amine compound and partially closed polyisocyanate, and is neutralized by an organic acid, wherein the -OH and the -NCO are in a mole ratio of 1.0-2.0:1. The epoxy group-containing acrylic resin is formed by copolymerization of an epoxy group-containing vinyl monomer and a vinyl monomer containing hydroxyl and alkyl ester. The dispersion resin, at least one pigment, a powder metal catalyst and deionized water together constitute the pigment slurry. The pigment slurry obtained by the dispersion resin provided in the invention has a good mating effect with an acrylic series cathode electrophoretic coating emulsion. The coating film is smooth, and has high gloss and small color difference.

The invention discloses a current transformer with a sensing head which comprises a giant magnetostrictive material and two fiber gratings, wherein the fiber gratings are respectively positioned at the upper surface and the lower surface of the giant magnetostrictive material and are intercrossed at different surface layers of the giant magnetostrictive material. The invention further discloses a current detection system; according to the embodiment of the invention, linear, efficient and stable working state of the giant magnetostrictive material and the fiber gratings is acquired by means of temperature compensation via two fiber gratings, and the test result is good.

The invention relates to a distributed storage performance test method and system in a broadcast and television service scene, and the method comprises the following steps: setting an adaptive test model according to the broadcast and television service scene, and compiling related test data; determining the configuration of the distributed storage system in a broadcast and television service scene; establishing a test environment according to the configuration, wherein the test environment comprises a distributed storage system, a network system and a client system; creating a test script according to the test data; executing the test script, testing by adopting a test tool, and recording a test result. The system comprises a test model setting module, a distributed storage system configuration module, a test environment establishment module, a test script creation module and a test module. The method comprises the following steps: simulating a read-write operation of a user accordingto a radio and television service scene test model, generating a test file, and testing by using a test tool; unnecessary performance tuning time in the test process is reduced, and an optimal test result is directly obtained.

The invention discloses a double-light-source color photometer with SCI/SCE test conditions compatible and an implementation method. Switch of the SCI/SCE test conditions is achieved in the mode of double-light-source active illumination, the design of the optical trap is replaced, and corresponding calibration algorithms are designed for the two test conditions. As is shown in the experimental result, the test results of the double-light-source color photometer on the SCI/SCE test conditions are obviously better than that of the prior art, and the double-light-source color photometer with the SCI/SCE test conditions compatible is more suitable for color test instruments with SCI/SCE test conditions compatible and has prominent value.

The invention discloses a double-leather-cup spherical plugging head for pressure plugging of a pipeline. An outer end of a steering arm is provided with a leather cup control oil path interface and aleakage measuring ring leakage measuring interface, the steering arm is connected with a leather cup front guard plate through screws, a piston rod of a leather cup control oil cylinder is connectedwith the leather cup front guard plate through a nut, the oil cylinder control oil path is connected to the leather cup control oil path interface at the outer end of the steering arm through a hydraulic pipe joint, the leather cup control oil path interface is connected to an oil cylinder control valve outside a plugging connector through the hydraulic pipe joint and a hydraulic pipe, two plugging leather cups are placed on the leather cup front guard plate and are separated from the middle through a leakage measuring ring, the leakage measuring ring leakage measuring interface is connected to a leakage measuring control valve outside the plugging connector through the hydraulic pipe joint and the hydraulic pipe, and the leather cup rear guard plate is connected with the leather cup frontguard plate through the leather cup control oil cylinder. According to the double-leather-cup spherical plugging head, the two plugging leather cups are adopted for sealing, so that the procedures ofthe build of a grease wall or the install of an isolation bag are avoided after break the pipe without fire, and the plugging head has the advantages of being reasonable in design, simple in process,high in efficiency and high in safety performance.

A sectioned tubular measurement device for shielding effectiveness of electromagnetic shielding fabric is mainly composed of a signal emitting end and a signal receiving end, both the signal emitting end and a signal receiving end are provided with supports, the signal emitting end is main formed by sequentially connecting a signal emitting tube, an emitting screw thread and a fabric stopping tube, and the signal receiving end is composed of a signal receiving tube, a receiving screw thread and a fabric clamping tube. A signal emitting antenna is arranged on the bottom face of the signal emitting tube, and a signal receiver is arranged on the bottom face of the signal receiving tube. The sectioned tubular measurement device is excellent in performance and accurate in test result, meets the required standard of a shielding effectiveness test, and provides reference for development, evaluation and detection of the electromagnetic shielding fabric. An adopted method is simple and convenient to operate and suitable for multiple repeated evaluation tests of the electromagnetic shielding fabric, can fill the blank in the field of shielding effectiveness tests of the electromagnetic shielding fabric, provides basis for evaluation, development and research of the electromagnetic shielding fabric, and fastens developing steps of the electromagnetic shielding fabric.

The invention discloses a cable television signal anti-interference device which is used for a cable signal transmission circuit and comprises an interference signal isolation device in serial connection with a signal transmission center conducting wire of the cable signal transmission circuit and an interference signal isolation device in serial connection with a shielding circuit of the cable signal transmission circuit; the cable television signal anti-interference device utilizes the interference signal isolation devices on the signal transmission center conducting wire and the shielding circuit of the cable signal transmission circuit to obstruct low-frequency signals and direct current signals, which isolates the low-frequency signals and the direct current signals interfering a TV in radio-frequency signals before the radio-frequency signals enter the TV, thereby effectively eliminating the influence of earth loop interference and hum interference on video signals, obtaining good testing result and customer satisfaction degree through laboratory experiments and tryout of customers and having very good market potential.

The invention discloses a continuous physiological signal quality evaluation method. The method comprises the following steps: segmenting an original physiological signal through windowing; preprocessing the segmented signal, wherein the preprocessing comprises signal baseline removal, band-pass filtering and median filtering; carrying out feature value extraction on the preprocessed signal; inputting extracted feature values into a pre-training model to obtain a score; and judging the score according to set threshold values L1 and L2 to obtain an evaluation result of the signal quality, wherein the pre-training model is an isolated forest model.

The invention discloses a continuous physiological signal quality evaluation device. The continuous physiological signal quality evaluation device comprises a signal segmentation unit, a signal preprocessing unit, a feature extraction unit, a signal quality evaluation unit and a classification judgment unit; the signal segmentation unit is used for receiving an original physiological signal and segmenting the original physiological signal through windowing to obtain a segmented signal; the signal preprocessing unit is used for preprocessing the segmented signal to obtain a preprocessed signal; the preprocessing comprises signal baseline removal, band-pass filtering and median filtering; the feature extraction unit is used for carrying out feature value extraction on the preprocessed signal to obtain an extracted feature value; the signal quality evaluation unit comprises a pre-training model, and the pre-training model is an isolated forest model; the signal quality evaluation unit inputs the extracted feature values into the pre-training model to obtain a score result score; and the classification judgment unit is used for judging the scoring result according to set threshold values L1 and L2 to obtain an evaluation result of the signal quality.

The invention relates to test equipment, in particular to jitter test equipment for small mechanical and electrical products. The technical problem to be solved by the invention is to provide the jitter test equipment for the small electromechanical product which is simple and convenient in operation process, obvious in test result and small in influence on the surrounding environment. The jitter test equipment for the small mechanical and electrical products comprises a test box and the like, a mounting plate is connected to the middle between the left side wall and the right side wall in the test box, an up-down jitter mechanism is mounted on the mounting plate, an operation table is connected to a moving part of the up-down jitter mechanism, a left-right jitter mechanism is mounted on the mounting plate, and a first through hole is formed in the right side of the bottom of the test box. Through mutual cooperation of the up-down jitter mechanism and the left-right jitter mechanism, the small electromechanical product placed on the operation table is tested, and meanwhile through optimization of the fixing mechanism and the protection mechanism, the effects that the operation process is simple and convenient, the test result is obvious, and the influence on the surrounding environment is small are achieved.