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

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 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.

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 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 discloses a test paper for measuring the result of early pregnancy, which comprises a test paper body and a packaging layer 1, a liquid-conducting layer 1 is installed under the packaging layer 1, and a HCG antibody carrier 1 is arranged below the liquid-guiding layer 1, and the The right side of the HCG antibody carrier one is provided with the HCG antibody carrier two, and the liquid-conducting layer two is installed under the HCG antibody carrier two, and the encapsulation layer two is installed under the liquid-conducting layer two, and the encapsulation layer one and the encapsulation layer Two connection packaging, a handle is installed on the top of the test paper body, a test area 1 is set on the test paper body, and the test area 1 is mainly composed of HCG antibody carrier two packages. In the present invention, a trapezoidal infiltration head is set at the lower end of the infiltration area, and the urine penetrates through the two sides and the top edge of the trapezoid at the lower end of the test paper at the same time during detection, so as to solve the problem of different infiltration speeds, and the test paper is encapsulated by encapsulation layer one and encapsulation layer two transparent plastic layers , Protect the test paper, so that the test paper is not easy to deteriorate and fail, and reduce unnecessary waste.

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.

The invention discloses a method for obtaining a stress-strain curve of a filling body test block through a common press, and belongs to the field of mechanical property tests of filling materials in mineral engineering. The method comprises the following steps of: adjusting the ascending speed of a lower pressing plate of the common press to be a static or dynamic loading state; calculating displacement and strain parameters according to a relationship between the motion speed of the lower pressing plate of the press and the height of the filling body test block and by combining playback videos; obtaining a load and stress parameters of the corresponding time by combining the playback videos; processing data through drawing software to generate a load-displacement curve and the stress-strain curve of the filling body test block for production guidance and deep research. The basis can be provided for a filling design of a goaf by analyzing the failure characteristics of the whole process of a filling body. The method provided by the invention is simple, convenient, economic and accurate.