201results about How to "Reduce the number of tests" patented technology

The invention discloses a test system and method of a data-driven rail traffic vehicle-mounted operation control system, belonging to the technical field of rail traffic signal system test. The test system comprises a test management module, a test execution module, a test interface adaption module and a test analysis and assessment module and is connected with a tested vehicle-mounted operation control system by the test interface adaption module, wherein the test management module finishes the functions of storing, modifying and configuring test data, the test execution module finishes the function of executing the test data, the test analysis and assessment module finishes the functions of recording, treating, analyzing and assessing the test data, and the test interface adaption module finishes the functions of adapting to the interface characteristics of real tested vehicle-mounted equipment and interacting practical information with the tested equipment. The invention can be conveniently used for various types of tests on the vehicle-mounted equipment of a train operation control system, wherein the tests comprise function test, interconnection test and the like; and in addition, the invention has good popularity and flexibility.

The invention relates to an MTPA control method of a built-in PMSM (Permanent magnet synchronous motor) and an MTPA control system. According to the method, an optimal theoretic torque angle of stator current discrete spots and rotating speed discrete spots is calculated, a variable search zone is divided, a torque angle outputting a largest torque is searched in the variable search zone and is taken as an optimal actually-measured torque angle, binary quadratic polynomial fitting for a series of optimal actually-measured torque angles is carried out to acquire a fitting formula of an optical algorithm torque angle, a direct-axis current given Id<*> and an alternative-axis current given Iq<*> of a motor under a stator current Is are calculated according to the optical algorithm torque angle and the stator current Is and are utilized as current ring givens of the built-in PMSM. Through the MTPA control method based on variable zone search and binary quadratic polynomial fitting, higher efficiency and precision are realized.

The invention discloses a numerical simulation analysis method for basic characteristics of a piezoelectric MEMS loudspeaker. The method comprises the following steps: 1) establishing a simulation geometric model of the MEMS loudspeaker; 2) setting physical fields and boundary conditions, including respectively setting material models, piezoelectric constitutive relations, dampers, constraint conditions, impedance boundaries, voltage loads and the like in 'solid mechanics', 'electric fields', 'pressure acoustics, frequency domains' and 'thermo-viscous acoustics, frequency domains' physical fields; 3) defining material parameters; and 4) setting the type and the size of the grid, and dividing the grid; 5) solving and calculating: respectively solving the finite element model by adopting frequency domain and characteristic frequency researches; and (6) result post-processing: obtaining a sound pressure level frequency response curve, a sound pressure and sound pressure level distributiondiagram, a change relation of capacitance values along with frequency, the magnitude and distribution diagram of stress/strain/displacement/speed/acceleration on a vibration part, and the resonance frequency and vibration mode of the MEMS loudspeaker through post-processing.

The invention relates to the technical field of electronic equipment test and evaluation, and discloses a method and a piece of equipment for testing and evaluating the electromagnetic environment adaptability of electronic equipment. According to the adopted equipment for testing and evaluating the electromagnetic environment adaptability of electronic equipment in the method, n analog signal sources with electromagnetic environment factors are connected with a piece of electronic equipment to be evaluated through a signal synthesis circuit, the electronic equipment to be evaluated is connected with an electromagnetic environment adaptability evaluating device through a data transmission cable, and the signal synthesis circuit is connected with the electromagnetic environment adaptability evaluating device through a data transmission cable. Reasonable match between various electromagnetic environment signal factors and different level numbers can be sought, the number of tests can be reduced, data of capability of the electronic equipment to be evaluated in task completion under k<n> electromagnetic environments can be stored in a Flash data memory, and the electromagnetic environment adaptability of the electronic equipment to be evaluated can be calculated and evaluated. The evaluating device is applicable to the test and evaluation of the electromagnetic environment adaptability of electronic equipment like commercial radars and radios.

The invention discloses an application installation package generation method and device, electronic equipment and a storage medium. The method comprises the steps that a code updating notification ofan application is received; a code and a configuration file of the application are obtained from a storage address in the code updating notification; a version number and a version name correspondingto each version class are obtained according to a set version number and a set version name in the configuration file, a placeholder corresponding to a version number configuration item of each version class in the configuration file is modified into a version number corresponding to the version class, and a placeholder corresponding to a version name configuration item of each version class is modified into a version name corresponding to the version class; codes are compiled according to the configuration information of each version class in the modified configuration file and are packagedto generate an installation package corresponding to the version class. Installation packages of different version classes consistent in user experience can be generated simultaneously, and people only need to test the installation package of one version class, so that manpower and test resources are saved.

The invention discloses a detection and evaluation method for a high filling tamping foundation (shortened as DEHE Detection Evaluation Method). The detection procedures are as follows: firstly, the tamping construction of a first layer is made, then the soil layers of the tamping construction are approximately divided into a bottom layer, an intermediate layer and a surface layer to be detected, wherein, the detection of the bottom layer adopts a load test and a density test; the detection of the intermediate layer adopts a particle analysis test, a density test and a wave speed test; the detection of the surface layer adopts a load test, a density test, a wave speed test and a foundation resilience modulus test. The invention can greatly reduce the quantity of the detection, improve the detection efficiency, decrease the detection cost, and achieve the double effect.

The invention discloses a method for positioning fault testing vectors on the basis of a bisection method, which comprises the following steps of: loading the testing vectors onto a circuit to be detected and outputting characteristic sequence values corresponding to the testing vectors; obtaining expected characteristic sequence values by responding to a compressor and comparing the expected characteristic sequence values with the actually measured characteristic sequence values; if the expected characteristic sequence values are inconsistent with the actually measured characteristic sequence values, obtaining a result that a certain fault points are possibly detected on the circuit to be detected, and then roughly and equally dividing a testing vector set into a first subset and a second subset; directly finding a first fault testing vector which causes the testing failure by using the first subset as a novel test object; and finishing the testing vectors which are not positioned and repeating the steps by using the testing vectors which are not positioned as a novel testing vector set until all the fault testing vectors are found. According to the positioning method disclosed by the invention, the testing vector set is divided and then the test is respectively carried out, so that the testing times are greatly reduced and the efficiency is high.

The invention discloses a method and a system for testing swinging cross or breaking of a multi-core cable. The method includes the steps of A, selecting a one cable core of a tested cable and performing a continuity test by respectively connecting two ends of the cable core on a testing channel of a continuity tester; B, selecting another cable core and repeating the step A until continuity tests for all cable cores are finished; C, selecting one pair of cable cores of the tested cable and respectively connecting one ends thereof on a test channel of a capacitance unbalance tester to test capacitance difference of the pair of the cable cores relative to other cable cores and a metal sheath; D, selecting another pair of cable cores and repeating the step C until all capacitance unbalance tests for the cable cores are finished; E, selecting cable core pairs with abnormal test results obtained in the step C and the step D, combining the cable cores two by two, respectively connecting one ends on the continuity tester to finish the continuity test between two random cable cores, obtaining result of the swinging cross, and then recording the result.

The invention provides a program state-oriented fault classification method, a mutation testing method and a device. The method comprises the following steps of: constructing a fault node set and a state mutation point set for each sentence of a source program to be tested based on a mutation operator corresponding to the syntax of the source program to be tested; constructing a variation flow diagram of the source program to be tested based on the fault node set, the state variation point set, the triggering relationship and the propagation relationship between the state variations of each statement; and according to the direct backward dominance relationship of the variant flow diagram, constructing a fault class dominance tree to perform fault classification on the source program to betested. The invention classifies and sorts the fault programs according to the general fault test principle, and supports multiple types of mutation operators, has good scalability, thereby reducing the test times, optimizing the fault set, simplifying the fault analysis cost, and improving the mutation test efficiency.

The invention discloses a substrate electricity leakage test method for a switch tube. The method includes the following steps: adopting a first step length to obtain a second range of a grid voltage corresponding to a maximum leakage current through scanning in a first range; and adopting a second step length to obtain a grid voltage corresponding the maximum leakage current through scanning in the second range, wherein the first step length is larger than the second step length. The test method first adopts a larger first step length to carry out rough scanning so as to reduce a value range of a test voltage and then adopts a second step length which is smaller in step length to carry out fine scanning so as to obtain a grid voltage corresponding to the maximum leakage current. Compared with a method which directly adopts a small step length to carry out a scanning test directly, test times are reduced significantly and the test efficiency is improved.

The invention relates to a differentiated intrusion prevention method based on a trust degree, and relates to the technical field of network securities. The differentiated intrusion prevention methodbased on the trust degree proposed by the invention comprises the following steps: establishing a trust degree comparison mechanism by performing traversal matching on characters; dividing data traffic based on trust degree grading; performing differentiated detection on the traffic by adopting different levels to match filters under different rules, so that the purposes of differential safety detection under the condition of large traffic and conventional safety detection at ordinary times are achieved. According to the differentiated intrusion prevention method based on the trust degree provided by the invention, the detection number of filters of high and medium trust degree characters is reduced, and a data packet discarding method is adopted for a zero-trust-degree character, so thatthe time consumption of unnecessary detection can be effectively reduced, and the purpose of increasing the performance of intrusion prevention equipment is achieved.

The invention discloses a civil engineering structure explosion damage experiment platform. The civil engineering structure explosion damage experiment platform comprises a base plate, a plurality ofsupporting columns and a plurality of transverse rods welded to the corresponding supporting columns, wherein a locking device for fixing a test piece is arranged in the middle of the base plate; a first testing device and a second testing device which are used for testing explosion parameters are symmetrically arranged on the two sides of the locking device; a fixing device used for fixing explosives is arranged on the plurality of transverse rods, the first testing device comprises two protection plates arranged at the two ends of the base plate respectively, and a plurality of screw rods are arranged on each protection plate in a penetrating and sliding mode. The civil engineering structure explosion damage experiment platform is novel in structure, can test detonation pressure parameters in all directions around the test piece, can resist the impact force by means of the strength of the first test plate and the second test plate when shock waves generated by explosion are spread all around, and can further convert kinetic energy of the shock waves into kinetic energy and internal energy of multiple devices, thereby preventing the experiment platform from being damaged.

The embodiment of the invention provides a monitoring method and device based on a simulated user test. The method comprises the steps of setting a test period for an interface according to the importance degree of the interface; Setting input parameters for the interface according to the function of the interface; Generating a request command according to the input parameters every other test period, the request command being used for simulating a user test on the interface; Executing the request command, carrying out simulation user testing on the interface, and returning a target code by the interface within a preset time length under the condition that the interface is normal; Judging whether a target code returned by the interface is received within a preset time length or not; And ifthe target code returned by the interface is received within the preset time length, determining that the interface is normal. Therefore, according to the technical scheme provided by the embodimentof the invention, the problem of monitoring lag when the system environment is abnormal in the prior art can be solved.

The invention discloses a method for measuring the electromagnetic compatibility between a receiving device and a transmitting device based on a geographical information system, and belongs to the technical field of electromagnetic compatibility measurement. According to the method, signals transmitted by the transmitting device are received through a direct injection method or a radiation method, playback monitoring is conducted on the transmitted signals after radio wave propagation path loss calculation and correction, the transmitted signals are sent to the receiving device through the direct injection method or the radiation method after being played back, and then the electromagnetic compatibility measurement is conducted on the transmitted signals. According to the method, the calculation result of a real interference signal, the calculation result of the receiving device and the calculation result of an electromagnetic compatible and coupling path are combined so that the electromagnetic compatibility of the receiving device and the transmitting device can be evaluated, the measurement procedure is simplified, the measurement difficulty is lowered, the measurement expenses are reduced, and compared with traditional electromagnetic compatibility forecasting and simulation, the electromagnetic compatibility forecasting and the simulation have the advantages that the result is closer to the real condition and the accuracy is higher.

The invention discloses an OSC frequency automatic calibration circuit comprising a parameter generator, an OSC circuit, a frequency error detection circuit, a calibration ending judgment circuit and a parameter adding and subtracting control circuit. The frequency error detection circuit is connected with a reference time window signal and a center frequency indication signal, and frequency error detection is performed on a clock signal according to the reference time window signal and the center frequency indication signal, and a frequency error value is calculated. The calibration ending judgment circuit judges whether frequency automatic calibration is ended or not and whether frequency automatic calibration is successful or failed. When calibration is not ended, the parameter adding and subtracting control circuit outputs a parameter adding and subtracting control signal to the parameter generator and adjusts a control parameter, wherein the adjusting amplitude is directly proportional to the frequency error value. The invention discloses an automatic calibration method of the OSC frequency automatic calibration circuit. The circuit is simple in detection principle and small in circuit area. Parameter adjustment is directly proportional to the frequency error value so that calibration speed can be enhanced.

The invention provides a failure testing method of an embedded flash memory. The failure testing method comprises the following steps of: step 1, providing one embedded flash memory; and step 2, testing each memory cell of a diagonal line of a memory cell array. The embedded flash memory comprises the memory cell array, and the memory cell array comprises a plurality of word lines and a plurality of bit lines in cross arrangement with the word lines. By adopting the failure testing method of the embedded flash memory, combination of all of the word lines and the bit lines can be tested so long as the memory cell of the diagonal line of the memory cell array is tested. Compared with the prior art, by utilizing the failure testing method, the testing time can be effectively reduced so as to realize the purposes of improving the testing efficiency and reducing the testing cost.