12results about How to "Solve test problems" patented technology

The invention relates to a fan circulation type testing device which comprises a frame, the frame is provided with a pipeline and a fan, the pipeline is a circulation loop, one end of the pipeline is connected with an air inlet of the fan, the other end of the pipeline is connected with an air outlet of the fan, the pipeline is provided with an air inlet and an air outlet, the frame is provided with a differential pressure transmitter, and the differential pressure transmitter is provided with two pressure guide pipes. The two pressure guide pipes are respectively communicated with an air inlet and an air outlet of the fan, the pipeline is provided with a regulating valve and a pressure transmitter, and the pipeline is provided with a plurality of temperature sensors. The testing method of the fan circulating type testing device has three working condition types: normal temperature testing, and heating and humidification not being started; high-temperature test: starting heating without starting humidification; and carrying out high-temperature humidification test, and starting heating and humidification. Test is carried out in a closed pipeline, the problem of treatment before combustible gas emission can be avoided, and the problem of high-temperature gas emission can also be avoided.

The utility model discloses a combination device for module brightness automatic testing. The combination device comprises a display screen and a physical optical module arranged on the front side of the display screen. The display module is arranged on the back face of the display screen and displays data of the display screen in real time, the display mainboard module is in signal connection with the display module, the single-chip microcomputer and the brightness control module are in signal connection with the display mainboard module, and the sensor module is in signal connection with the single-chip microcomputer and the brightness control module. The display mainboard module and the single-chip microcomputer and brightness control module are respectively connected with the power supply module, and the sensor module obtains display screen light rays obtained by the physical optical module. By adopting the above structure and through the hardware design of combining the display module and the sensor, the problem of light sensor component testing is solved while the requirement for monitoring the brightness of the display screen is met, the testing labor cost of a product end is reduced, and the product testing reliability is improved; and meanwhile, the product competitiveness is improved.

The present invention discloses a testing device and method for air-heating PTC products. The testing device for air-heating PTC products includes an air duct, a fan, an inlet temperature detection component, an outlet wind speed detection component, an outlet temperature detection component and an adjustment mechanism; the fan is arranged in the air duct, and the air duct has a placement area for placing the air-heating PTC product to be tested; the air duct has an inlet and an outlet, the inlet temperature detection component is arranged on the air duct between the placement area and the inlet, and the inlet temperature detection component is used to detect the inlet temperature; the outlet wind speed detection component and the outlet temperature detection component are arranged on the air duct between the placement area and the outlet, the outlet wind speed detection component is used to detect the outlet wind speed, and the outlet temperature detection component is used to detect the outlet temperature; the adjustment mechanism is used to adjust the cross-sectional area of ​​the air duct. By adopting the above scheme, the beneficial effect of being able to simultaneously meet the test of air-heating PTC products with different structures and different heat dissipation areas on the same testing device is achieved.

The invention discloses a multi-interface concurrent test device and method. The multi-interface concurrent test device provided by the embodiment of the invention comprises a controlled test module, wherein the controlled test module is connected to a first test port and a second test port of a unit to be tested respectively; the main control test module is connected with the controlled test module, the main control test module controls communication between the controlled test module and the first test port and / or communication between the controlled test module and the second test port, and the main control test module is connected with the controlled test module and controls communication between the controlled test module and the first test port and / or communication between the controlled test module and the second test port. And the control module is used for controlling the time sequence of communication between the controlled test module and the first test port as well as between the controlled test module and the second test port. According to the multi-interface concurrent test device and method provided by the embodiment of the invention, the time sequence can be accurately controlled, and the multi-interface concurrent communication test can be quickly and correctly realized.

The embodiment of the invention provides a potential detection device which can solve the technical problem that the potential measurement error of a pipeline is large. The potential detection device comprises a reference connection wire, a potential measurement module, a pipeline connection wire, a polarization switch, a timer and a test piece connection wire, the reference connecting wire is connected with a to-be-detected pipeline; the potential measuring module is electrically connected with the reference connecting wire; one end of the pipeline wiring is connected with a to-be-detected pipeline; one end of the polarization switch is electrically connected with the potential measurement module, and the other end is electrically connected with the other end of the pipeline wiring; the timer is used for setting on-off time, one end of the timer is connected with the pipeline wiring, the other end of the timer is connected with the potential measurement module, and the timer is connected with the polarization switch in parallel; the test piece wiring is connected with a to-be-tested pipeline through the polarization switch. And through a polarization mode, the measurement accuracy is improved. The potential detection device is simple in structure, light in weight, low in cost, affordable, suitable for various environments, beneficial to popularization of stations and capable of solving the problem of power-off potential testing of various positions, and parts are convenient to disassemble and assemble.

The utility model relates to circuit test technical field discloses alternating current turnout control test test appearance, including power module for power supply, inverter module is connected with power module electricity and is used for inverting direct current voltage into alternating voltage, control module, with inverter module electricity connection, acquisition module is connected with control module electricity, and acquisition module includes 5 voltage acquisition channels and 5 current acquisition channels, and voltage acquisition channel and current acquisition channel all are connected with acquisition probe. The utility model, through power module replaces generator drive alternating current switch machine, can make this test appearance to use for a long time continuously, carries out wiring inspection to three -phase five -wire system turnout wiring by control module, to ensure that this test appearance normal work, and further monitor the positioning of turnout, anti -position and four open different positions, solved the inconvenient problem of testing to alternating current turnout.

The present invention discloses a modular intelligent testing device for a low-voltage cabinet in a nuclear power plant. A microcomputer module, an interface control module, a switch mechanical characteristic tester, an insulation resistance test module and a comprehensive protection verification module in the device are independent of each other in physical structure. The modules are quickly assembled through interfaces arranged on the modules to realize their combined functions. The modules can also be used separately to realize their corresponding functions. Compared with an integrated testing device, the present invention has a small size, light weight, convenient transportation, and flexible combination, and effectively solves the problem of testing the low-voltage cabinet in a nuclear power plant in certain narrow environments. Moreover, the testing process of the present invention does not require complicated wiring and wiring removal, and is safe and reliable. Different low-voltage cabinet test items of the low-voltage cabinet in a nuclear power plant can be directly switched through the microcomputer module. The testing process is simple and the testing efficiency is high. Test-related data is uploaded to the cloud for management, and the degree of intelligence is high.

The utility model provides a kind of test box for door panel and its mechanism test, comprising: outer box, it includes accommodating cavity and outlet, outlet is arranged on the outside of outer box;Built-in function mechanism, it is arranged in accommodating cavity, built-in function includes adjustable transformer and built-in terminal block;External terminal block, it is arranged on the outside of outer box;Control switch group, it is arranged on the outside of outer box, control switch group is electrically connected with built-in function mechanism.This application will control switch group, built-in function mechanism and external terminal block group be set on outer box, and control switch group, built-in function mechanism and the external terminal block group are prewired;When testing, the door panel or door panel mechanism to be measured is respectively wired with external terminal block, and opening or closing can be carried out through control switch group to test door panel or door panel mechanism, solve the problem of testing door panel or mechanism separately.

The present invention provides a circuit board for automatically testing a leakage protection sensor, comprising: a power supply control module, a reference source module, an AC / DC constant current module, a working current acquisition module and a controller. The present invention realizes the acquisition and detection of the working current of the leakage protection sensor on a circuit board, thereby solving the problem of the existing leakage protection sensor test that requires a signal generator, a supplier, a programmable power supply, a DAQ acquisition card and a constant current electronic load to be realized. In addition, the circuit board for automatically testing the leakage protection sensor in the present invention has the advantages of good controllability and fast response speed because the various functional modules are concentrated together, and at the same time reduces the equipment and greatly saves the cost.

The application discloses a kind of cotton field damage mulch sample mechanical property test method and application thereof, the application is aimed at damage and limited mulch sample, constructs systematic mechanical property test method, proposes "mulch-isolation paper" laminated preparation sample method and seal positioning mark sample method, and combined with isolation paper uniform support dispersion impact stress, color coding and mark avoid direction confusion.The right-angle tearing sample qualification rate of cotton field mulch is improved from 61.87% to 83.75% by the technical scheme provided in the application;Overall test efficiency is improved by 36.82%;The variation coefficient of longitudinal right-angle tearing and tensile load is reduced by more than 33%.Data reliability is enhanced.The technical scheme provided in the application effectively overcomes the test difficulties such as damage and limited quantity of field mulch sample, provides operable skills for evaluating the mechanical property attenuation and mechanical recycling adaptability of mulch, and has reference value for farmland residual film pollution control and standard method improvement.

The embodiment of the invention provides a potential detection device which can solve the technical problem that measurement data are not fed back in time when cathode protection is adopted for an oil and gas pipeline. The device is characterized in that a reference connecting wire is connected with a to-be-detected pipeline; the wireless network universal meter is electrically connected with the reference connecting wire and is in communication connection with the terminal equipment, so that data acquired by the wireless network universal meter can be obtained; one end of the pipeline wiring is connected with a to-be-detected pipeline; one end of the polarization switch is electrically connected with the wireless network universal meter, and the other end is electrically connected with the other end of the pipeline wiring; the timer is used for setting on-off time, one end of the timer is connected with the pipeline wiring, the other end of the timer is connected with the wireless network universal meter, and the timer is connected with the polarization switch in parallel; the test piece wiring is connected with a to-be-tested pipeline through the polarization switch. The wireless network multimeter is electrically connected with the reference wire and is in communication connection with the terminal equipment, so that the on-off potential data of the pipeline are measured, and the target of feeding back the field potential data of the pipeline in real time is achieved.

The invention provides a sunlight simulator as well as an irradiation device and a use method thereof. The irradiation device is connected to the light outlet window of the sunlight simulator and can freely rotate around the light outlet window. The object carrying component of the irradiation device is provided with two symmetrical object carrying cavities which are used for carrying the experimental samples to be irradiated, the requirement that the multiple experimental samples are irradiated at the same time under the same condition is met, and the experiment efficiency is improved. Along with rotation of the irradiation device, the relative irradiation position of the object carrying component and the light emitting window can be adjusted, a more uniform irradiation area can be found, it is guaranteed that the illumination intensity of experimental samples in the two object carrying cavities is consistent, experimental data are more accurate, and experimental results are more objective. According to the irradiation device and the sunlight simulator using method provided by the invention, an implementation path with higher adaptability and higher reliability is provided for related clinical experiment research, the test problem in a sunlight simulator clinical experiment is effectively solved, and the usability and the application range of a sunlight simulator product are greatly improved.