52results about How to "Accurate and effective testing" patented technology

The invention discloses a self-discharge detection method of a lithium iron phosphate battery. Charging and discharging pretreatment is carried out on lithium iron phosphate batteries after capacity sorting processing; the batteries are placed for standing for some time respectively in different temperature environments and open-circuit voltages OCV1 and OCV2 are tested; a difference value K between the OCV1 and the OCV2 is calculated; and according to the K value, a battery with a high self-discharge value is determined and selected. According to the invention, the electrode polarization is eliminated by pretreatment, so that the influence on the voltage by polarization and unstable system factors can be minimized; and the battery with the high self-discharge value can be screened out rapidly in short time before grouping. The test is accurate and effective; the product quality is substantially improved; and the consistency of the whole group of batteries can be prevented from being influenced by the battery with the high self-discharge value. Therefore, the service life of the battery group can be prolonged.

The invention relates to an intelligent synchronous testing and adjusting method capable of simultaneously infusing, testing and regulating, belonging to the field of oil extraction technologies in oil fields. A method of adopted equipment comprises the following steps: (1) a synchronous intelligent testing and adjusting device release part; (2) an intelligent testing and adjusting part; (3) a guiding part; and (4) an eccentric water distribution part. The adopted equipment is characterized in that the intelligent synchronous testing and adjusting method of the whole equipment comprises the following steps: descending into a well: using a steel wire to be suspended to descend into the well; placing the synchronous intelligent testing and adjusting device into a connected technological pipecolumn provided with an eccentric water distributor and a packer; and leading the adjustable blanking plug into an eccentric hole of the eccentric water distributor and releasing the adjustable blanking plug so that the adjustable blanking plug stays in the eccentric water distributor. The invention can realize the unchanged bridge type eccentric whole well working system, directly obtain the single-layer flow, achieve the simultaneous water infusion, testing and adjustment at multiple layers and enhance the work efficiency.

The invention relates to the technical field of mine support, and concretely relates to a test bench used for testing the impact load of an anchor rod, and a test method thereof. The test bench comprises an anchor rod used for mine support, and also comprises a work test bench, a driving device, an impact device and an angle encoder, the anchor rod is anchored in the boring model of the work test bench, the driving device is used for driving the impact device to make the impact device obtain initial energy, the impact device is used for instantly bumping an impact beam for arranging an anchor rod pallet in order to apply impact load having an axial direction to the anchor rod, and the angle encoder is used for testing the swing angle of the impact device. The test bench and the test method can realize the stimulation of the anchor rod support work state in a laboratory, can accurately and effectively test the impact load of the anchor rod when surrounding rocks are instantaneously destroyed and release energy, and can realize the sectioning observation of the deformation position of the anchor rod.

The invention discloses a self-noise test system and level test method for a ship sonar platform and belongs to the field of underwater noise control engineering. According to the invention, three signal source generators are controlled through a computer to generate excitation signals, and so the three signal source generators generate simulated hydrodynamic noise, simulated mechanical noise andsimulated propeller noise. Then data is collected and analyzed through a signal acquisition and recording end. A sonar platform self-noise test under a single noise resource effect can be carried out,a platform self-noise test under the effects of multiple noise resources at the same time can be implemented, test data in a whole wide frequency band can be obtained at a time, tests in different frequency bands are avoided, the work efficiency is improved, and the self-noise characteristics of a sonar chamber under various working conditions are more realistically simulated, and the establishment of a self-noise test system for the ship sonar platform is achieved.

The invention discloses a self-discharge detection method for a nickel-cobalt-manganese lithium battery. The method comprises the steps that charge-discharge preprocessing is carried out on the nickel-cobalt-manganese lithium battery after capacity grading; standing in environments at different temperatures for a certain period of time is carried out; open circuit voltages V1 and V2 are tested; the value of W=V1-V2 is calculated; and a battery with large self-discharge is selected through the W value. According to the method, electrode polarization is eliminated through preprocessing; the effect of polarization and system instability on the voltage pair is minimized; batteries with large self-discharge can be quickly filtered out before grouping in a short period of time; the test is accurate and effective; the product quality is greatly improved; the consistency of the whole group of batteries is not affected by batteries with large self-discharge; and the service life of a battery group is extended.

The invention relates to the technical field of mine support, and particularly relates to a test bed for testing the shear load of an anchor rod and a test method of the test bed. The test bed comprises an anchor rod for mine support, a working test board, a shearing device, a fixed drilling model, a follow-up drilling model and a hydraulic sensor, wherein the anchor rod is anchored in drilling holes of the fixed drilling model and the follow-up drilling model; the fixed drilling model is mounted on the working test board; the shearing device drives the follow-up drilling model to slide along the radial direction of the anchor rod; a shearing surface against the anchor rod is formed between the fixed drilling model and the follow-up drilling model; the hydraulic sensor is mounted on a loading oil way system of a shearing oil cylinder and used for testing the pressure of the oil cylinder system of the shearing device. Through the test bed, the test of the shearing resistance of the anchor rod in a laboratory is realized, a basis is provided for the theoretical study on the anchor rod support and the anchor rod support design in complicated stress conditions, and thus the test bed has great significance on deepening of the mechanism study on the anchor rod support and guaranteeing of the engineering safety.

The embodiment of the invention discloses a risk-driven testing method and device and a computer-readable storage medium. The method comprises the following steps: a knowledge map is used to representa software product to be tested; when the code of the software product to be tested is changed, the changed code is traced according to the knowledge map to test the traced test cases. By adopting the scheme of the embodiment of the invention, the software product to be tested is represented by a knowledge map, so that when the code of the software product to be tested is changed, the affected test case can be quickly positioned, the test can be carried out accurately and effectively, and the quality of the software product can be comprehensively guaranteed.

The invention discloses a MEMS (Micro Electro Mechanical System) gyroscope chip wafer-level testing system and a testing and screening method. The MEMS gyroscope chip wafer-level testing system comprises a control host and a wafer carrying table for placing a wafer to be tested; a program control motor is arranged below the wafer carrying table; the program control motor is connected with the control host by a probe station controller; a probe card is fixed right above the wafer carrying table; the probe card is connected with an electrode of the wafer to be tested by a probe; the probe card is respectively connected with the control host, a high-accuracy source table and a network analyzer; both the high-accuracy source table and the network analyzer are connected with the control host; and on the probe card, a MCU (Micro Controller Unit) is respectively and electrically connected with an integrated circuit switching matrix, a C / V conversion chip and a C / V conversion circuit module. According to the MEMS gyroscope chip wafer-level testing system and the testing and screening method which are disclosed by the invention, by utilizing the control host, control on the probe card, the probe station controller, the high-accuracy source table and the network analyzer is implemented, so that parameter testing and testing result determination of a gyroscope chip are implemented, and an unqualified chip is screened out and removed, and thus, a case that the unqualified chip flows into the next packaging process is effectively avoided, and packaging cost is greatly saved.

A method for odd-testing voice quality of large telephone traffic at mobile core network includes calling relevant analog terminal in large telephone traffic test center by sound source terminal and detection terminal separately and holding on communication state, holding on communication state between said relevant analog terminals and broadcasting real voice signal from sound source terminal to the other analog terminals at controller side of analog radio network as well as selecting a broadcasted analog terminal to carry out semi fixed chaining and unchaining to analog terminal connected with detection terminal repeatedly and randomly till add-test of voice quality is finalized.

The invention relates to the field of circuit board manufacturing performance analysis, and particularly discloses a flexible circuit board manufacturing performance monitoring analysis method and system, and the method comprises the steps: screening each target flexible circuit board according to the basic parameters of each to-be-monitored flexible circuit board in the current production batch of a target circuit board manufacturing enterprise; the appearance parameter information of each target flexible circuit board is obtained, the appearance quality index of each target flexible circuit board is analyzed, and each specified flexible circuit board is obtained through comparison and screening, so that the accuracy of the manufacturing quality analysis result of the flexible circuit board in the later period is improved, and meanwhile, each specified flexible circuit board is randomly sampled; according to the method, the flexibility index of each specified flexible circuit board sample plate is obtained through testing, the number of the specified flexible circuit board sample plates with qualified flexibility is compared and counted, the flexibility qualification rate of the specified flexible circuit boards in the current production batch is evaluated, and corresponding processing is performed, so that the flexibility of the flexible circuit boards can be accurately and effectively tested.

The invention provides a test apparatus of an acoustic vibration transfer function of suspension absorber vehicle body attaching points. The apparatus comprises a force hammer, a microphone, a data acquisition front end, a processing device, and a tool part, the tool part is arranged on a front suspension absorber and a rear suspension absorber, the free boundary test state of an acoustic vibration test is simulated, and the acoustic vibration transfer functions of the front suspension absorber and the rear suspension absorber are tested by knocking the tool part by the force hammer. According to the usage of the tool part, on one hand, the attaching points of the front suspension absorber and the rear suspension absorber of a test vehicle are close to the boundary condition of the real vehicle and are the same as the CAE simulation boundary condition; on the other hand, the test of the acoustic vibration transfer function in the X, Y and Z directions is facilitated. By employing the test method, the acoustic vibration transfer function of the attaching points of the vehicle body front and rear suspension absorbers to the human ear in the vehicle can be accurately and effectively tested.

The invention discloses a digital subscriber line (xDSL) test system and a test method thereof; the system comprises a computer, a controller and a test module; the controller and the test module are connected to form a test loop; the test module comprises an impedance source module, a filter module and a load impedance module which are serially connected; the impedance source module comprises a plurality of impedance sources and a first relay; the filter module comprises a plurality of filters and a second relay; the load impedance module comprises a plurality of load impeders and a third relay; consequently, the on / off of the first relay, the second relay and the third relay are controlled through the computer, so that the appropriate impedance source, filter and load impeder are connected into the test loop after automatic selection to accurately and effectively test all the functions of a digital user line; and according to the invention, test equipment is optimized, the number of matchers is reduced, the operation is very convenient, a test cycle is shortened, so that the test efficiency is greatly improved.

The embodiment of the invention discloses a method for constructing test data hierarchy of hot spot data based on Vdbench, the method comprising the steps of creating a storage pool and creating RAIDwith different performance in the storage pool; creating a LUN in the storage pool and mapping the LUN to a host; obtaining and recording the storage capacity of disks with different performance; constructing a Vdbench configuration file according to the hot spot data proportion, and distributing the hot spot service to the LUN.; after the elapse of the first set time, checking the hot spot data hierarchy. A Vdbench test tool is used to construct a configuration file, and the construction of hot spot data greatly simplifies the test steps and shortens the time of hot spot data construction. Atthe same time, the function of data stratification is tested effectively and accurately, the test of data stratification is simplified, and time and human cost are saved without human participation in the test process.

The invention discloses an evaporative emission test device for automobile parts. The evaporative emission test device comprises a VOC environmental chamber and a hydrogen flame ionization detector, wherein a hydrocarbon sampling port is disposed on the bulkhead of the VOC environmental chamber; a sampling tube of the hydrogen flame ionization detector is inserted into the hydrocarbon sampling port until it extends into the VOC environmental chamber; an electromagnetic check valve is connected to an external exhaust pipe of the VOC environmental chamber; and the VOC sampling port of the VOC environmental chamber is connected to a vacuum bag. A test method for the test device is also provided. While the air impermeability of the VOC environmental chamber of the test device is ensured, it can be also ensured that the inner wall of the test device does not deform or leak due to temperature and pressure changes during a hot dip test and a day and night ventilation emission test. The hydrogen flame ionization detector is provided for the test device in order to test the evaporative emissions in the environmental chamber in real time.

The invention provides a method and device for testing a streaming system. The method comprises the following steps: collecting first interface data of modules in the streaming system, obtaining the types of the first interface data, counting the first range of various characteristic values of each type within a first preset time period, collecting second interface data of the modules in the streaming system, and determining whether characteristic values of the second interface data are within the first range or not. According to the method, the data can be collected automatically in real time, and the test requirement of module interfaces with large data volume and dynamic data is met; a checking rule of the interfaces of the modules is generated automatically and can be regulated timely when data or test strategies change, and the interface data of the streaming system which operates for a long time can be checked; test efficiency and test quality are improved greatly, labor cost is lowered, the streaming system is standardized, and problems which are difficult to find by a traditional test method can be found.

The invention provides an automatic channel testing method of a wireless router. The method comprises the following steps: step (1): setting the radio frequency of a plurality of APs as a plurality ofdifferent channels to serve as iperf servers to start a traffic running process and WDS bridging servers; step (2): using a plurality of other APs as WDS bridging clients to respectively bridge AP devices and using as iperf clients to start the traffic running process; and step (3) when an automatic channel n is tested, closing two APs corresponding to the channel n, placing a device to be testedin the environment, and checking a selection result, wherein n is polled from 1 to 13, that is, a complete test is performed on the automatic selection of the entire wireless full channel. By adoption of the automatic channel testing method provided by the invention, a fixed test environment for performing wireless automatic channel selection is provided; and the test environment is stable, and the test data are accurate and reliable and can be used as the basis for the automatic channel selection test.

The invention provides a method for testing the alternating current impedance of a failed battery, which comprises the following steps of: S1, disassembling the failed battery to be analyzed, separating a positive plate, a negative plate and a diaphragm, and preventing the treated positive plate and negative plate from being contacted for later use; S2, assembling a lithium sheet and the positive plate and the negative plate which are treated in the step S1 into three electrodes; and S3, respectively testing AC impedance spectrums of the positive electrode pair lithium sheet, the negative electrode pair lithium sheet and the positive electrode pair negative electrode. The method for testing the alternating current impedance of the failed battery can accurately and effectively test the alternating current impedance spectrums of the positive electrode to the lithium, the negative electrode to the lithium and the positive electrode to the negative electrode of the failed battery, is used for analyzing the impedance of the positive electrode and the negative electrode of the failed battery and helps to determine the failure position. According to the invention, different positions of the pole sheets and alternating-current impedance spectroscopy of the battery cell in different states can be selected to be tested, so powerful and accurate data support is provided for the internal resistance analysis of the failed battery.

The invention discloses a discrete element method-based damping calculation simulation method for a macrostructure of a non-cohesive particle material. The method comprises the following steps of establishing a virtual numerical test model; Performing nano indentation and nano scratch test to obtain constitutive parameters; Calculating and monitoring damping dissipation energy and friction energyvalues; And calculating the damping evolution of the macrostructure of the non-bonded particle material based on the state accumulation mode of each calculation step. The method has the advantages that the method is used;, The method comprises the following steps of: accumulating states of calculation steps under discrete element software; the defect that continuous integration cannot be carried out under a discrete element method is broken through; secondly, the corresponding relation between dissipation energy of particles in the structure under the action of dynamic load and damping of thecorresponding structure in each period is established, a macroscopic damping accurate calculation method of the non-bonded particle group structure under the discrete system is provided on the basis,and important guarantee is provided for long-term performance estimation of the non-bonded particle material.

The invention discloses an interface conversion circuit, a multi-chip interconnection system and a test method thereof. The interface conversion circuit is arranged in the chip and comprises a chip identification module, a data module, a control module, a write-in module, a read module and a comparison output module. The chip is located in the multi-chip interconnection system, and the chip contains a chip identification code. The chip identification module is used for identifying the chip identification code and outputting identification matching information; the data module is used for obtaining a test instruction and test data according to the test vector; the test instruction comprises an identification code instruction; the test data comprises write-in data and expected response data; the control module is used for judging whether the identification matching information is matched with the identification code instruction; the write-in module is used for outputting write-in data to the chip; the read module is used for collecting read data of the chip; and the comparison output module is used for obtaining and outputting an error signal according to the read data and the expected response data. According to the embodiment of the invention, the universality, flexibility and efficiency of chip testing can be improved.

The invention discloses a rack testing system and a rack testing method for a distributed energy supplying system. The rack testing system comprises a rack on which a power follower set, a fuel supplying and acquiring system, a driving system control system, a driving system, a battery simulator system and a distributed system energy management unit are arranged. The rack testing system for the distributed energy supplying system further comprises a testing load and a testing load control system. The power follower set is internally provided with a plurality of power followers. Each power follower is internally provided with a power follower energy management unit. The rack testing system and the rack testing method for the distributed energy supplying system can supply accurate and effective testing on energy supplying to double range extenders, multiple range extenders and a power battery, thereby obtaining true and effective testing data and effectively supporting a whole-vehicle matching and control algorithm.

The invention provides an anchor rod combination stress performance test system and an evaluation method. The anchor rod combination stress performance testing system comprises a fixing assembly, a stretching applying assembly, a shearing applying assembly, a torque applying assembly and a monitoring element. The stretching applying assembly comprises a stretching loading oil cylinder used for applying stretching force to the anchor rod body. The shearing applying assembly is used for applying static shearing force and dynamic shearing force to the anchor rod body. The torque applying assembly comprises a rotating motor used for applying torque to the anchor rod body. The monitoring element is connected to the anchor rod body so as to monitor stretching, shearing and torsion borne by the anchor rod body. The system for testing the combined stress performance of the anchor rod can simulate a high-stress environment encountered by the anchor rod main body in a site construction process, and respectively apply a dynamic load, a static load or a dynamic and static coupling load to the anchor rod main body, so that the combined stress performance of the anchor rod main body can be accurately and effectively tested and evaluated.

The invention provides an optical-fiber far-field spherical scanning device used for pohotonic crystal fiber (PCF) effective area measurement. The device comprises an optical-fiber collimation system, a focusing microscope system, a photoelectric detector and an electric control displacement platform. The PCF to be measured is adjusted by the optical-fiber collimation system so as to ensure that an emergent end surface of an optical fiber to be measured is located at a conjugate point of the electric control displacement platform. The microscope focusing system is used to observe a cutting state of an optical fiber end surface. The photoelectric detector installed on the electric control displacement platform receives far field light field distributions of optical-fiber end-surface emergent light under different azimuth angles in real time, calculates and acquires an effective area parameter of the measured PCF. In the invention, a photoelectric encoder, a data display instrument and a phase-locked amplifier data acquisition system are adopted, program control operation is achieved and test precision is high, an extraneous interference is small and tests of the PCF effective areas under different kinds of structures can be satisfied.

The invention provides a method for testing a pH value of a concrete pore fluid. The method comprises the steps of preparing a test piece and carrying out a test. The step of preparing the test piececomprises the sub-steps of cutting to-be-tested concrete into the test piece; drilling a hole in the test piece; sealing organic glass with a hole on the hole of the test piece; adding distilled waterinto the hole of the test piece and carrying out sealing; and storing the treated test piece in a test box in an environment with the humidity of 100% and the temperature of 22-25 DEG C. The step ofcarrying out the test comprises the sub-steps of putting a glass pH microelectrode and an Ag-AgCl micro-reference electrode into the hole of the test piece to test the pH value of the pore fluid. Themethod for testing the pH value of the concrete pore fluid is effective and accurate, simple to operate and low in cost.

The invention relates to a device and method for testing wide-area dielectric loss and capacitance of a condenser bushing, and belongs to the technical field of power system testing tools. The devicecomprises a bushing drainage wire, a bushing capacitor, a control switch I, a control switch II, a high-precision current transformer, a fixed resistor, an intermediate transformer, a voltage-dividingcapacitor, a compensation inductor and a dielectric loss online monitoring device. According to the invention, high-precision testing of relative dielectric loss and capacitance can be realized without receiving a voltage signal, the dielectric loss and capacitance monitoring of the condenser bushing is achieved. The device is simple in structure, convenient to carry and use, capable of completing effective and accurate testing under the condition that a high-voltage lead is not disassembled and interference is caused by induced voltage on the drainage wire, and high in anti-interference capacity.

The invention discloses a test paper for determining an early pregnancy result. The test paper comprises a test paper body and an encapsulation layer 1, a liquid guide layer 1 is arranged below the encapsulation layer 1, an HCG antibody vector 1 is arranged below the liquid guide layer 1, an HCG antibody vector II is arranged at the right side of the HCG antibody vector 1, a liquid guide layer 2 is arranged below the HCG antibody vector 2, an encapsulation layer 2 is arranged below the liquid guide layer 2, the encapsulation layer 1 and the encapsulation layer 2 are joint-encapsulated, a handle is arranged above the test paper body, an examination area is arranged on the test paper body, and the examination area 1 is mainly formed by encapsulating the HCG antibody vector 2. A trapezoidal infiltrating head is arranged at the lower end of an infiltrating area, urine simultaneously penetrates through both sides and the top edge of a trapezoid at the lower end of the test paper during detection in order to solve the problem of different infiltration speeds, and the test paper is encapsulated by two transparent plastic layers which are the encapsulation layer 1 and the encapsulation layer 2 to protect the test paper in order to make the test paper not prone to deteriorate and lose efficacy in order to reduce unnecessary wastes.

The invention discloses a test system and a test method for power distribution and utilization communication. The test system comprises a client; a server terminal which comprises a first server unit and a second server unit which are not connected with each other; the second server unit is in radio signal connection with the client; the first server unit is in wired electric signal connection with the client; the carrier communication power line is used for connecting the client and the server terminal, and the carrier communication power line can load an interference source to introduce noise; according to the method, whether the change degree of an index on a carrier communication power line is greater than a preset value is judged through PLC equipment; the delay time of the test system can be obtained by comparing the first time when the first server unit receives the feedback information with the second time when the second server unit receives the feedback information. Therefore, the test process of the test system is more accurate and effective, and the delay time and the intensity of index fluctuation can be obtained.

The invention discloses a threading device on harness string spring testing equipment. The threading device comprises a threading board, wherein a harness board frame is arranged below the threading board; multiple threading holes are uniformly formed on the threading board; and multiple holes are uniformly formed on the harness board frame. By using the threading device on the harness string spring testing equipment, disclosed by the invention, harness strings mounted on the equipment are all separated after being threaded by the threading device so that springs connected to the harness strings can be separately fixed to avoid friction in the moving process; therefore, the harness string spring is accurately and effectively tested under the weaving condition, the quality of the spring is identified and the detecting efficiency is largely increased so that the selection and utilization of the spring are optimized.

The embodiment of the present invention discloses a method for constructing hotspot data testing data layering based on Vdbench, including creating a storage pool, and creating RAID with different performances in the storage pool; creating a LUN in the storage pool, and mapping the LUN Go to the host; obtain and record the storage capacity of disks with different performances; build a Vdbench configuration file according to the proportion of hot data, and send hot business to the LUN; after the first set time, check the layering of hot data. The present invention constructs the configuration file through the Vdbench test tool, realizes the structure of the hot data, greatly simplifies the test steps, shortens the time for constructing the hot data, and at the same time effectively and accurately tests the data layering function, so that the data layering test Simplified, and no human participation is required in the testing process, saving time and labor costs.

A testing method for the coppering thickness of onstate hole in the wiring board is disclosed that includes following steps: A. when designing the composing mode of the wiring board, a row or several rows of holes which have same size with the onstate holes in the flexible wiring board productions are drilled on the waste copper area beside the production; B. after the electric plating, the samples of the onstate holes are cut form the waste copper area, and the cross sections are abraded, burnished and eroded; the thickness of the cross section of the cover is measured. A composing mode which is convenient for measuring the thickness of testing holes is adopted in the invention, and it can measure the coppering thickness of onstate holes precisely and effectively without destroying the production.