51results about How to "Meet actual testing needs" patented technology

The method includes steps: parsing object to be tested, picking up tested information from the object tested; displaying the picked test information, receiving test information input from user; generating test case based on the picked test information and the inputted test information; combining the test case and object to be tested creates testing target codes; running the testing target codes implements test for robustness of software product. The invention also related to device for testing robustness of software product. The invention can realizes automatic generation and automatic extraction for test information of tested object.

The invention discloses an extensible semiconductor resistive flexible gas sensor with micro-wrinkle film structure and a preparation method thereof. Insulating substrate-polyacrylate double-sided foam tape (VHB, very high bond) that is extensible is unilaterally pre-extended to certain extent and fixed to a rigid substrate; a patterned graphene electrode and a colloidal quantum dot film are prepared on a VHB substrate that is pre-extended, and the sensor is prepared by retracting the VHB substrate slowly. The gas sensor prepared in the method has a gas-sensitive layer of micro-wrinkle film structure and a patterned graphene electrode, the gas sensor features extensibility, manufacturing temperature and operating temperature of the sensor can be lower than room temperature, transient or minor changes in gas concentration can be detected at room temperature, and the gas sensor has high response restoring speed and sensitivity, has certain resistance to ambient humidity interference and has better long-term stability.

The invention provides a bus fault injection system, and is applied to the technical field of fault injection. The system comprises a control terminal and fault injection equipment; the control terminal sends a fault injection instruction to the fault injection equipment in a communication manner; a controller to be tested is connected with a vehicle-mounted CAN network through the fault injectionequipment, and the fault injection equipment obtains a real vehicle CAN message and a fault injection instruction transmitted by the vehicle-mounted CAN network, performs fault injection on the realvehicle CAN message according to the obtained fault injection instruction, and finally sends the obtained fault CAN message to the controller to be tested so as to complete the safety function test ofthe controller to be tested. In the system, the controller to be tested is connected with the vehicle-mounted CAN network through the fault injection equipment; the obtained fault CAN message is obtained by the fault injection equipment through fault injection based on the real vehicle CAN message corresponding to the actual driving condition of the vehicle, the actual test requirement can be met, and meanwhile, the credibility of the function safety verification result is improved.

The invention provides a new elastic modulus tester for a concrete test block. A lower mounting plate and an upper mounting plate are coaxially fixed on the lower end and the upper end of the concretetest block respectively. Fastening screws are arranged on the lower mounting plate and the upper mounting plate respectively, and are tightly fixed with the outer wall of the concrete test block. A tester mounting seat is installed on the upper mounting plate, and a microdeformation detector is mounted on the tester mounting seat. The end part of a lower vernier and the side wall of the lower mounting plate are provided with a plug and a jack which are matched for plug-in connection. The end part of an upper vernier and the side wall of the upper mounting plate are provided with a plug and ajack which are matched for plug-in connection. A ruler body is penetrated and inserted in the lower vernier and the upper vernier in turn. The lower vernier and the upper vernier are respectively provided with vernier fastening screws. One ends of the vernier fastening screws pass through the side walls of one sides of the lower vernier and the upper vernier to cooperatively clamp the ruler body.The end parts of the lower vernier and the upper vernier arranged up and down are respectively fixedly cooperatively connected with the lower mounting plate and the upper mounting plate, so that the height can be adjusted at random on a height ruler by the lower mounting plate and the upper mounting plate, and the detection range can be adjusted at random.

The invention discloses a high performance liquid chromatography tandem mass spectrum detection method of free catecholamine and metabolites in human urine. The method comprises the following steps of(1) preprocessing a sample, successively adding urine samples in an internal standard working solution and a phosphoric acid solution, and carrying out vortex mixing; (2) carrying out weak cation exchange solid phase extraction 96-well plate (SPE96 well plate) activation; (3) carrying out solid phase extraction processing, after step (1) processing, loading the samples to the SPE 96-well plate after step (2) activation, carrying out formic acid methanol solution elution, and drying eluant with nitrogen; and (4) redissolving and using a high performance liquid chromatography tandem mass spectrometry to carry out analysis detection. The method has the advantages of high accuracy, high reproducibility, high sensitivity, high specificity, high efficiency, high flux, low cost, simple and rapidoperation and the like.

The invention discloses an X-ray combination refractor focusing performance test device based on CCD detection. The X-ray combination refractor focusing performance test device based on CCD detection comprises a base guide rail, an X-ray light tube, a laser device and an X-ray CCD, wherein the base guide rail, the laser device and the X-ray CCD are longitudinally located on the base guide rail. An adjustment table is located on one side of the base guide rail, the optical axis of the X-ray light tube and the optical axis of the laser device are longitudinally arranged, and the X-ray light tube and the laser device can be transversely and movably installed on the adjustment table; an X-ray combination refractor to be detected is located in the middle of the base guide rail, and the optical axis of the X-ray combination refractor to be detected is longitudinally arranged; the X-ray CCD is located on the other side of the base guide rail, and the optical axis of the X-ray CCD and the optical axis of the X-ray combination refractor are on the same straight line; the exit end of the X-ray light tube or the exit end of the laser device and the incidence end of the X-ray combination refractor to be detected are oppositely arranged, and the exit end of the X-ray combination refractor to be detected and the X-ray CCD are oppositely arranged. The X-ray combination refractor focusing performance test device based on CCD detection is simplified in structure, greatly reduces cost and is good in practicability.

The invention discloses a high performance liquid chromatography detection method of free methoxy group noradrenaline and methoxy group in human plasma. The high performance liquid chromatography detection method of the free methoxy group noradrenaline and the methoxy group in the human plasma comprises the following steps that: (1) sample pre-treatment is conducted, interior label working solution and spiritus mindereri are successively added into a plasma sample, vortex is mixed, and centrifugation is conducted; (2) weak positive ion exchange solid phase extraction 96 pore plate (SPE 96 poreplate) is activated; (3) solid phase extraction treatment is conducted, after the step (1) is conducted, the sample is loaded into the treated SPE 96 pore plate, a formic acid acetonitrile solution is eluted, and eluent is dried by nitrogen; and (4) redissolution is conducted, analysis and detection are conducted by the high performance liquid chromatography detection method. The high performanceliquid chromatography detection method of the free methoxy group noradrenaline and the methoxy group in the human plasma has the advantages that accuracy is high, reproducibility is high, sensitivityis high, specificity is high, the efficiency is high, flux is high, the cost is low, and the operation is easy, convenient and fast.

The invention discloses a method for generating an automatic test case of a rail transit signal system. The method comprises the following steps of S1, performing case scene analysis; S2, extracting specific influence factors of the scene; S3, orderly combining the influence factors through a CT algorithm, and automatically generating test data covering all scenes and all function points and faultpoints; S4, automatically screening and eliminating the test data; S5, selecting a part of test data results for manual analysis to obtain a data set with labels, carrying out modeling analysis on the obtained data set by using an LSSVM algorithm to obtain an LSSVM model, judging and identifying an expected result of an unknown sample by utilizing the LSSVM model to obtain the expected result ofeach piece of sample data, and combining the expected result with the corresponding sample data to obtain a finished test case. According to the invention, automatic generation of the test cases is realized, and the test cases are completely covered without omission.

The invention relates to an electromagnetic measurement-while-drilling system and method based on an adjacent well receiving antenna. The system comprises a drill pipe emitting assembly, an adjacent well receiving assembly and a ground display terminal. The drill pipe emitting assembly is inserted into the bottom of a to-be-measured well; the adjacent well receiving assembly is arranged inside an adjacent well; the upper end of the drill pipe emitting assembly is electrically connected with the adjacent well receiving assembly, and the lower end of the drill pipe emitting assembly is in wireless connection with the adjacent well receiving assembly; and the adjacent well receiving assembly is electrically connected with the ground display terminal. The adjacent well receiving antenna is adopted for receiving signals, ground power frequency interference can be avoided, propagation loss of electromagnetic wave signals on an upper stratum of an adjacent well receiver, the measurement depth of the electromagnetic measurement-while-drilling system is increased greatly, and the electromagnetic measurement-while-drilling system and method based on the adjacent well receiving antenna can be widely applied to exploration and development of new energy resources like coal bed gas, shale gas, geothermal wells and hot dry rock.

The invention relates to a liquid crystal biosensor for simultaneously detecting multiple cancer markers and a preparation and detection method thereof. The liquid crystal biosensor provided by the invention comprises a multi-channel sample groove and a liquid crystal biosensing interface modified by different cancer marker coding DNA (Deoxyribose Nucleic Acid), the multi-channel sample groove comprises an independent channel and a communicating channel, and the communicating channel is located above the independent channel, so that the upper half parts of different independent channels are communicated with one another; and the liquid crystal biosensing interfaces modified by the different cancer marker coding DNA are constructed in different independent channels of the multi-channel sample groove. Different cancer markers are utilized to encode DNA to modify the liquid crystal biosensor, simultaneous detection and quantitative detection of various different cancer markers are realized, accurate detection of extreme samples is also realized, and the detection method has the advantages of small sample dosage, convenience in detection, rapidness, high efficiency, high sensitivity, low cost and no need of large instruments.

The invention discloses a detection method for extracting albendazole compounds from fish flesh. The method comprises the following steps: extraction of homogenized fish flesh with ethyl acetate, purification using n-hexane, acetonitrile concentrating, external standard technology quantification and high performance liquid chromatography-tandem mass spectrometry detection. A technology for rapidlyscreening qualified ethyl acetate is provided to avoid possible impurities which can oxidize albendazole. The detection limits of albendazole sulfoxide, albendazole sulfone and amino albendazole sulfone in the method are 0.27 [mu]g/kg, 0.09 [mu]g/kg and 0.11 [mu]g/kg respectively. The maximum residue limit of albendazole in ruminants in European Union and China is prescribed as follows: the sum of residual markers albendazole sulfoxide, albendazole sulfone and amino albendazole sulfone in a muscle matrix does not exceed 100 [mu]g/Kg. The method is very suitable for detecting the residue of albendazole in the fish flesh, and has the advantages of simplicity, fastness, low cost and high sensitivity.

The invention provides a sound insulation test system applied to the technical field of railway vehicles. The system comprises a sound insulation test chamber, a temperature control system and an acquisition test system. A partition wall in the sound insulation test chamber divides the sound insulation test chamber into a sound production chamber and a receiving chamber, and a test window for fixing a to-be-tested sample piece is preset in the partition wall; when the sound insulation test system provided by the invention is applied to a sound insulation test, the to-be-tested sample piece isfixed in the test window, and the indoor temperatures of the sound production chamber and the receiving chamber are adjusted through the temperature control system to simulate the running condition ofthe rail train running in a cold zone area; and the acquisition test system generates a test sound source meeting a preset test requirement in the sound production chamber, and acquires and receivespreset sound parameters in the chamber, so that the sound insulation effect test of the vehicle body structure in the cold zone region is completed, and the actual test requirement is effectively met.

The invention belongs to the technical field of biosensor preparation, and in particular relates to a biosensor surface modified based on Ti3C2Tx, a preparation method and application thereof. The biological sensing surface modified based on the Ti3C2Tx comprises a sensing substrate and the Ti3C2Tx modified on the surface thereof; wherein Tx is surface group O2-, OH-, F-, NH3, NH4+. The transitionmetal carbide Ti3C2Tx coats a biological sensing substrate to form a sensing surface which can be used for adsorbing charged biological small molecules, thus improving the detection capability of thebiological small molecules. The method is convenient to operate, and compared with the sensing surface of the traditional total internal reflection biosensor, the detection limit of arginine is improved by 100 times, and the actual detection requirement can be met.

The invention provides a ceramic product surface spot detection method based on machine vision. The method comprises the steps that S1, image information under different light sources is acquired, andimages are preprocessed; s2, identifying candidate initial points of spot edges; s3, determining coarse edge points and edge colors through an edge detection model; s4, sub-pixel surface spot edge detection based on an arc tangent function; and S5, the black spot diameter, the red spot diameter and the yellow spot diameter obtained in the step S4 are judged. According to the method, the coarse edges of the three-color spots of the ceramic product are recognized according to the brightness difference of the three-color spots in three illumination environments, the arc tangent function sub-pixel fitting method is applied to recognize the edges of the spots and determine the diameters of the spots, the method has the advantages of short detection time and accurate results, and the actual detection requirements are met.

The invention discloses a monitoring device for partial discharge of electrical equipment, which comprises handheld monitoring equipment, and is characterized in that the handheld monitoring equipment comprises a first acquisition module, a first processing module, a first detection module, a first storage module, a display module, a handheld monitoring equipment shell and a handheld monitoring equipment handle; the first acquisition module comprises a plurality of first sound pressure sensors which are distributed in a three-dimensional array geometrical shape in a space and is used for acquiring ultrasonic waves; the first processing module is connected with the first acquisition module and is used for carrying out noise reduction and filtering on the acquired ultrasonic waves; the first detection module is connected with the first processing module; the first storage module is connected with the first detection module; and the display module is connected with the first storage module and is used for displaying the spatial geometric position of the discharge ultrasonic emission source. The device is flexible to use, can carry out patrol discharge monitoring on large-area and numerous electrical equipment, can cope with various electrical equipment with high-voltage discharge, is high in detection and positioning precision, saves the cost, and improves the working efficiency.

The densimeter comprises a top cover, a measuring tube, a counter weight and a positioning strip, an opening is formed in the upper end of the measuring tube, the counter weight is loaded into the measuring tube from the opening, the bottom of the measuring tube is of a cone structure, the top cover is arranged at the upper end of the measuring tube and used for sealing the opening, scale marks are arranged on one side of the measuring tube, the positioning strip is arranged on the side, provided with the scale marks, of the measuring tube, and a groove hole is formed in the top cover. The slotted hole penetrates through the top cover. The densimeter is used for measuring whether the density of lithium battery slurry with high viscosity is uniform or not, the slurry stirring effect can be judged conveniently, parameter adjustment and optimization can be conducted on the stirring process conveniently, sampling is easy and convenient when the densimeter is used, the measuring speed is high, errors are small, the accuracy is high, and the densimeter is suitable for rapidly obtaining density data of the high-viscosity slurry in real time. The invention also relates to a method for testing the density of the battery slurry.