395results about How to "Reduce testing workload" patented technology

The invention discloses a method and a system for controlling the frequency switch of a multi-connected air conditioner. The method comprises the following steps: obtaining a practical running frequency value of a multi-connected air conditioner compressor by detection; obtaining a practical pressure value of the multi-connected air conditioner by detection; judging whether the practical pressure value reaches a preset target pressure value or not, if so, finishing the frequency modulation process of the multi-connected air conditioner, and otherwise, carrying out frequency modulation according to the preset target pressure value; confirming a frequency variation value of the multi-connected air conditioner according to a frequency modulation result obtained by the frequency modulation of the preset target pressure value; adding up the detected practical running frequency value and the frequency variation value to generate an expected frequency value of the multi-connected air conditioner; comparing the expected frequency value of the multi-connected air conditioner with a preset frequency switch threshold value and allotting the running frequency of a host machine and a submachine of the multi-connected air conditioner in a preset calculation way. The method and the system for controlling the frequency switch of the multi-connected air conditioner can rapidly, simply and conveniently realize the frequency switch of the multi-connected air conditioner.

The invention discloses a stability parameter test board for an automobile and belongs to the technical field of measurement. The test board is used for integrally testing a quality parameter, a mass center position parameter and an anti-rollover angle parameter of the automobile. The stability parameter test board consists of a measuring table board, four platform scales, a table board pillar, a foundation, three hydraulic cylinders, an inclination angle measuring device, hydraulic sensors, a pumping station and a computer, wherein the platform scales are arranged on the measuring table board and supported by a weighing sensor; supporting points of the table board pillar are distributed in a form of rectangular top points; the foundation is used for supporting the pillar and the table board; the three hydraulic cylinders are arranged between the table board and the foundation and can make the table board incline longitudinally or laterally; the inclination angle measuring device is fixed on the table board; the hydraulic sensors are arranged at upper and lower cavity positions of two hydraulic cylinders which make the table board incline longitudinally; the pumping station is connected with the hydraulic cylinders; and the computer is used for acquiring data of the weighing sensor, oil pressures of the hydraulic cylinders and the inclination angle of the table board and performing an operation. The table board has the advantage that: compared with a conventional test device, the device can complete tests on the total mass, the axle load, the wheel load, the mass center position, the anti-overturn angle and the like of the automobile, so the test workload and the test cost of the parameter test are lowered.

The invention discloses a metal material low-temperature tensile test device. The metal material low-temperature tensile test device comprises a temperature measuring device, a low temperature box, a low-temperature box refrigerating device which is communicated with the low temperature box and tensile test clamps which are connected with a tensile testing machine, wherein the low temperature box comprises a box body, a box internal working space and a box door which is arranged on the box body, and the box body consists of an inner shell, an outer shell and a heat preserving layer which is arranged between the inner shell and the outer shell; the tensile test clamps include an upper clamp and a lower clamp, which are symmetrically arranged on the top and the bottom of the box body, both the upper clamp and the lower clamp respectively stretch into the box internal working space, and the axis of the upper clamp is overlapped with that of the lower clamp; the temperature measuring device with temperature measuring end stretching into the box internal working space is arranged on the middle part of the side wall of the box body; the upper part of the box body is provided with a temperature regulating agent injection opening, a temperature regulating agent discharging pipe which is communicated with the box internal working space and stretches out of the box body is arranged on the bottom of the box body, and the temperature regulating agent discharging pipe outside the box body is provided with a temperature regulating agent discharging pipe valve. The metal material low-temperature tensile test device is simple for controlling the temperature, good in temperature control effect and accurate and effective in test results.

The invention discloses a device and a method for testing automotive active safety systems on a bench. The device comprises a camera bellow, a to-be-tested system, a display, an upper computer and a lower computer. Scene animation required by tests is generated by the upper computer and is displayed via the display; the scene animation is acquired by the to-be-tested system; movement of a to-be-tested automobile is simulated by the lower computer in real time, the lower computer is communicated with the to-be-tested system via a CAN (controller area network) bus, automobile state and driver operation information is transmitted to the to-be-tested system, and bus data transmitted by the to-be-tested system are received; the lower computer is communicated with the upper computer via a network cable, and running data of the automobile are transmitted to the upper computer, so that the scene animation can be updated in real time; the upper computer is further used as a test managing and monitoring platform. The device and the method have the advantages that active safety tests are carried out on the automobile on the bench, so that field tests or field data acquisition can be omitted, test workload can be reduced, test risks and the test cost can be decreased, and the test repeatability can be improved; large test working condition databases can be omitted, and accordingly the test working condition data can be conveniently managed.

The invention discloses a split jet aerator, which comprises the following parts: suction inlet, water nozzle, mixing tube, dispersing pipe, tail pipe and distributor, wherein the distributor connects the tail pipe; a cone with the action of deflecting the composite liquid and reducing the local resistance is set in the pipe segment with diffusing angle of tail pipe; the CFD company adopts artificial software value to optimize the design of the structure of jet aerator, which transmits the composite liquid of effluent-living sludge into water nozzle; certain vacuum is formed in the course of jet to form three-phased composite liquid of gas, liquid and solid, which enters into the dispersing pipe to form jet distributor with certain pressure to do inclined ejection to aerate oxygen and stir. The invention improves more dynamic efficiency and more oxygen utility than traditional one, which possesses larger suction quantity, higher bubble quality, evener stirring power and more energy saving.

The invention discloses a device for testing the performance of an optical module and aims at providing a convenient and quick test environment. The invention is realized by the following technical scheme: a PC is connected to a server through an RJ45 network cable, is connected to an optical module performance test board through a USB data line, and is connected to an optical power meter throughan RS232 serial line, the optical power meter is connected to an ROSA optical device through an optical fiber splitter, a tested optical module is connected to the test board through a gold finger slot, the average optical power of the TX end of the tested optical module is divided into two by the optical fiber splitter, one path is sent to the ROSA optical device, and the other path is sent to the optical power meter, the PC obtains the average optical power value of the optical module measured by the optical power meter, and then compares the average optical power value with an optical powerthreshold that have been configured by the server, and determines whether the average optical power value of the tested optical module is within a normal range by using the comparison result. An alarm light visually displays various performance test results of the tested optical module.

The invention discloses an automatic interface testing method and system based on simulative http requests. The automatic interface testing system comprises a request center, an interface agency center and a verifying center. The request center requests for testing of certain interface to the interface agency center, the interface agency center transmits parameter definition and response data format of the interface to the request center, the request center matches the parameter definition and requests for http simulation of the appointed interface according to user-input rules, and the verifying center verifies formats and content of the response data. Users only need to set rules and input a few data, then accuracy and extensibility of the http interface can be automatically verified, and interface testing efficiency is greatly improved.

The invention discloses a method for obtaining surplus energy of a battery based on an SOC-OCV curve and belongs to the field of vehicle batteries. The method comprises the following steps that S1, atemperature-rated capacity curve, a temperature-total energy curve and SOC-OCV curves at different temperatures are collected; S2, SOC-surplus energy curves at different temperatures are obtained; S3,the SOC-surplus energy curves at different temperatures are input to a BNS program; S4, query is conducted according to a two-dimensional table to obtain the real-time surplus energy. According to the method, the SOC-OCV curves are used for calculating an integral of released energy to obtain the surplus energy of the battery for the first time, and the surplus energy of the battery at differenttemperatures and SOCs is obtained. According to the method, the accurate surplus energy can be obtained just by testing the most basic battery characteristic, the workload of battery testing is lowered, and the real-time surplus energy of the battery can be obtained in the vehicle operation process.

The invention discloses an in-situ feeder automation test system, comprising a test workstation (1) and a plurality of testers (2). The test workstation (1) is connected with the plurality of testers (2) through a network. Tested in-situ FA (Feeder Automation) power distribution terminals (3) are in pluggable connection with the plurality of testers (2), thereby finishing in-situ FA control over corresponding monitoring points. When a test is carried out, the tested in-situ FA power distribution terminals (3) obtain electrical data simulated by a simulation module (12) and generate first control logic according to the electrical data and internal control logic programs and parameters. The monitoring points which are not connected with the in-situ FA power distribution terminals are simulated and second control logic is generated through adoption of in-situ FA control logic in the simulation module (12). A test workstation (1) adjusts an operation state of a power distribution network model (11) according to the first control logic and the second control logic. When the test is carried out, not all monitoring points need to be connected with the tested in-situ FA power distribution terminals, a comprehensive test can be finished through adoption of one tested in-situ FA power distribution terminal, the wiring is simple, the test workload is low, and the test efficiency is high.

The invention discloses a horizontal wind-velocity gauge support used for acquiring the wind speed in a wind tunnel and capable of realizing vertical adjustment to carry out multi-point observation. Ascrew is mounted at an outer extension segment and a through hole arranged on a horizontal crossbeam, the screw and the horizontal crossbeam are fixedly limited through a thread assembly, upper and lower ends of the screws are respectively provided with a top holder and a bottom holder, the top holder, the bottom holder and the screw are fixedly mounted through the thread structure, a wind-velocity gauge is mounted on the horizontal crossbeam, and the wind-velocity gauge is connected with a data acquisition device through a data line. The horizontal wind-velocity gauge support is advantaged in that a method of gradually moving the wind-velocity gauge to acquire wind velocity in a single point mode is replaced, multi-point observation can be carried out to acquire the wind velocity of onesame horizontal plane, the horizontal crossbeam can be vertically lifted down and up to change vertical height of the wind-velocity gauge, free adjustment on one same vertical section at different heights is realized, truckles are set through a bottom portion of the support body to realize back and forth movement in the wind tunnel, and multi-point wind-velocity acquisition on the one same horizontal plane at different distances is realized.

The invention relates to a side cover plate for a geotechnical engineering physical model test, comprising a main cover plate framework, an organic glass plate, a supporting frame and a stiffening rib, wherein the organic glass plate and the supporting frame are both installed on the main cover plate framework; the inner side of the supporting frame is in contact with the outer side of the organic glass plate; one end of the stiffening rib is rotatably connected to the main cover plate framework; the stiffening rib is adhered to the outer side of the organic glass plate; and the organic glass plate is provided with an excavation hole. The side cover plate for the geotechnical engineering physical model test can be repeatedly utilized, the organic glass plate facilitates digital photographing, and the information, such as soil mass deformation and the like around a cavern is directly collected.

The invention provides an electromagnetic valve driving device capable of carrying out online regulation, which comprises an MCU (Micro Controller Unit), a first D/A (Digital-Analog) conversion circuit, a second D/A conversion circuit, a third D/A conversion circuit, a first amplifying circuit, a first comparator, a second comparator, a third comparator, a CPLD (Complex Programmable Logic Device) logic control circuit, a boost controller enabling circuit, a boost controller, a booster circuit, a high voltage driving circuit, a low voltage driving circuit, a cylinder selection driving circuit, a high voltage driving pipe, a low voltage driving pipe, a cylinder selection pipe and a sampling resistance R. Parameters of the first D/A conversion circuit, the second D/A conversion circuit and the third D/A conversion circuit and logic in the CPLD are subjected to online setting by the MCU. According to the invention, online adjustability of a driving high voltage and a driving current of an electromagnetic valve can be implemented. The electromagnetic valve driving device is used for driving the electromagnetic valve in an electric control common rail oil sprayer of a diesel engine.

The invention relates to an estimation method for the sequence of voids in mineral aggregate of an asphalt mixture. The estimation method comprises the following steps: firstly, based on mineral aggregate without asphalt, establishing physical models of voids in mineral aggregate in a skeleton void form, a skeleton dense form and a suspension dense form, and analyzing a change rule of voids in the mineral aggregate without asphalt; and verifying the sequence predicted by the models according to a result of test on voids in mineral aggregate of a compact asphalt mixture. With the method, the trouble of obtaining voids in mineral aggregate by a Marshall compacting or rotary compaction piece is eliminated, the test workload is reduced greatly, the design efficiency is improved, and feasible theoretical and technical support is provided for grading optimization design of asphalt mixtures.

The invention discloses an ANSYS finite element platform-based prediction method for induction quenching hardening layer depth. The method comprises the following steps: (1) determining an actual working environment in induction quenching according to the technical requirements of a work-piece; (b) building a finite element entity model of an actual induction quenching environment on an ANSYS finite element platform according to the actual working environment; (c) firstly defining a PLANE13 attribute of a two-dimensional coupled field entity unit, defining material attributes, and then dividing to form proper finite element grids; (d) exerting a heat source load, a heat convection constraint and boundary conditions to each node of the two-dimensional coupled field entity unit PLANE13, carrying out electromagnetic heat coupling analysis on the work-piece by adopting a direct method to obtain an electromagnetic heat coupling calculation result; (e) calculating and analyzing a work-piece temperature field. According to the ANSYS finite element platform-based prediction method, the model, the load and constraint conditions can be modified according to the actual work-piece size and equipment parameters, the induction quenching test workload of the work-piece is greatly reduced, the analysis efficiency and the technical parameter test accuracy are improved, and the test cost is reduced.

The invention discloses a testing script based on an SAP platform and a parameter integration method. Script templates for a test of the SAP platform are classified and sorted, then a general test script is automatically generated through a program according to the scrip templates, parameter information of the script templates is extracted, script object linkage correlation of a parameter object and a structure is formed, a script executing test is unified by dynamically calling an ECA TT scrip, a Function and the like, and the practically generated general script has the uniform input parameter; a parameter object list is obtained through the script object, then parameter value information is obtained according to the provided parameter object, the script templates are dynamically called, a parameter is filled in to conduct test operation, and the general script and execution unification are achieved. Generation of the general script is automatically executed through the program, and the general script does not need to be manually generated, so that test working load is reduced.

The invention provides a mineral particle model parameter calibration method based on a discrete element method. The mineral particle model parameter calibration method comprises the steps that a mineral particle model parameter constitutive model based on the discrete element method is built through physical test determination and a preliminary prepared method, and the constitutive model is usedfor being combined with stacking angle determination to carry out a physical and numerical simulation dual-directional test; on the basis of preliminary verification results, mineral particle model parameters are taken as independent variables to carry out an orthogonal numerical test, a stacking angle determination value is taken as an evaluation index to carry out regression analysis, and stacking angle physical test measurement is taken as a target value to build a regression model and determine a mineral particle model parameter optimal combination; and the determined optimal combination is verified through a numerical test again, and the mineral particle model parameters based on the discrete element method are determined finally. The technical scheme solves the problems of high difficulty in obtaining parameters and low measurement accuracy of an existing mineral particle model, and provides effective technical means for determining parameters of mineral particle numerical simulation tests.

The invention discloses a decomposition analysis platform for whole vehicle performance indexes of a commercial vehicle. The decomposition analysis platform comprises a test platform, and a first slide way and a second slide way which are arranged in parallel and have the adjustable spacing distance are arranged on the test platform; a first tire base and a second tire base are arranged on the first slide way, and a third tire base and a fourth tire base are arranged on the second slide way, wherein the upper end of the first tire base, the upper end of the second tire base, the upper end of the third tire base and the upper end of the fourth tire base are located on the same plane as the upper surface of the test platform and all electrically connected with a signal acquisition instrument; and the signal acquisition instrument is externally connected with a computer terminal. The analysis platform is low in cost, good in operability and universality and capable of being used for testing the ride comfort and the handling stability of the vehicle. The invention further discloses a decomposition analysis method for the whole vehicle performance indexes of the commercial vehicle. Themethod is simple, feasible and capable of reducing the cost and test workload of whole vehicle performance analysis.

The invention discloses a uniform circular array direction-finder antenna receiving mutual impedance test and a mutual coupling compensation system. A method for achieving the system comprises receiving a mutual impedance model building unit, obtaining an antenna port voltage unit under array element mutual coupling, obtaining an antenna port voltage unit under non-array-element mutual coupling, building a mutual coupling voltage array unit, building a mutual coupling current array unit and building a uniform circular array receiving mutual impedance array unit. The uniform circular array direction-finder antenna receiving mutual impedance test obtains all antenna port voltage under array element mutual coupling effects and antenna port voltage after removing the mutual coupling effects by setting one horizontal wave incoming direction, and a uniform circular array receiving mutual impedance array is built according to a receiving mutual impedance theory. When direction-finding equipment works, the uniform circular array receiving mutual impedance array conducts mutual coupling compensation on a direction-finder terminal processing machine while meeting work frequency points, and accordingly direction showing degree output by the direction-finding equipment is accurate.

The invention discloses a FA test method for checking transmission in field by an in-situ feeder automation system, which relates to the field of distribution automation technology. A feeder automaticintelligent tester and a feeder switch condition adaptive simulator are connected to a substation outlet switch and a feeder switch terminal of the tested feeder; secondary test plans of each feederswitch terminal are derived from main test plans of a master tester at a cloud platform or the substation outlet switch; each secondary tester realizes coordination with the master tester of the substation outlet switch by monitoring feeder test condition; the whole process of protection of substation outlet switch and fault detection, isolation and power restoration of all feeder switch terminalscan be tested and checked, the feeder FA function and performance are tested fully automatically, and transmission tests of a substation switch, a feeder segment switch and a loop switch is completedat one time, without real-time communication between the master tester and the secondary tester.

The invention discloses a method for quantitively detecting methane-oxidizing bacterium. The method comprises the following steps: sampling; washing bacterium with PBS (Phosphate Buffer Solution) by shaking samples; designing and selecting a double-layer microfiltration membrane plate with specific pores according to the number of the samples; and filtering the bacteria, passing the membrane and fixing; and conducting fluorescent dyeing and result analysis. According to the fluorescent strength of samples on the microfiltration membrane plate, the number of the methane-oxidizing bacterium in soil samples or sediment samples can be quantitively calculated, so as to provide technical support for microorganism oil-gas exploration and microorganism oil-gas reservoir characteristics.