10results about How to "Eliminate test errors" patented technology

The invention discloses a preparation method of a standardized sheet for a thermoelectric test of minerals or mineral materials and alloys, belongs to the technical field of mineralogy, material science and prospecting prediction, and establishes a preparation process of a universal mineral or mineral material and alloy thermoelectric sheet. Covering all semiconductor mineral types or mineral material types such as pyrite, magnetite, graphite and sintered ore; accurate thickness control is achieved through a double-face polishing-loading sheet supporting structure, in-situ testing of the thermoelectricity of minerals or mineral materials and alloys is achieved, and the testing precision is improved; by adopting a conductive adhesive-copper plate composite structure, the interface resistance is reduced, the supporting strength is met, and the requirement of eliminating detection interference is met; residual colloid is thoroughly removed through ultrasonic cleaning, and the insulation effect is avoided; according to the standardized sheet, the hollow aminated phenolic resin nanosphere is used as a conductive substrate and is used for bonding a sample and a copper plate, the contact resistance between the sample and an electrode can be greatly reduced, and the accuracy of test data is improved.

The utility model discloses an auxiliary positioning tool for welding of a battery cell pole and a test connecting piece, which comprises a positioning seat, the surface of the positioning seat is provided with a through hole which is through up and down and is convenient for welding, and a limiting groove matched with a horizontal part of a busbar is formed below the through hole; the auxiliary welding positioning tool for the battery cell pole and the test connecting piece further comprises a battery cell clamping device detachably connected with the positioning seat, and the positioning seat is fixed to the battery cell through the clamping device. The welding device can be suitable for cells of different models, the connecting pieces are in tight contact with the pole columns of the cells during welding, the welding effect can be ensured, the welding effectiveness is ensured while the single cell connecting pieces are efficiently welded, the connectivity is good, welding slag is reduced, and test errors caused by non-cell reasons during cell testing are eliminated as much as possible.

The application provides a valve nozzle detection assembly, relates to the technical field of valve nozzle air leakage detection, and comprises a preliminary detection closed container, a pressure source and a detector. The preliminary detection closed container comprises a preliminary detection mounting plate and a preliminary detection pressure chamber. The preliminary detection mounting plate is uniformly provided with a plurality of preliminary detection mounting holes for mounting valve nozzles, a preliminary detection connecting hole for connecting the pressure source, and a preliminary detection detection hole for mounting the detector. One end of the preliminary detection pressure chamber is sealed, and the other end is provided with a sealing opening for connecting the preliminary detection mounting plate. A sealing element is arranged between the sealing opening and the preliminary detection mounting plate. The pressure source is used for pressurizing the inside of the preliminary detection closed container through the preliminary detection connecting hole. The detector is used for detecting the pressure change in the inside of the preliminary detection closed container through the preliminary detection detection hole. The application can detect a plurality of valve nozzles at a time, improves the detection efficiency, simulates the actual working environment of the valve nozzle, and the detection result is accurate.

The invention relates to a pressure system micro-leakage online monitoring method and device, equipment and a storage medium, and the method comprises the steps: obtaining the identity information of a to-be-monitored pressure system, associating the identity information with the monitoring process, and generating a bound monitoring task; performing pressure initialization; acquiring reference state data (reference pressure and reference temperature) of the to-be-measured pressure system and starting monitoring; in the micro-leakage monitoring process, actual state data of the to-be-measured pressure system at the current moment are circularly obtained and recorded at a preset time interval, and the actual state data comprise an actual pressure value and an actual temperature; according to the reference pressure, the reference temperature and the actual temperature, calculating a theoretical pressure value in a leakage-free state at the current moment; comparing the actual pressure value with the theoretical pressure value to obtain a pressure difference, and judging whether the pressure system leaks or not according to the pressure difference to obtain a monitoring result. The method has the effect of improving the accuracy of the micro-leakage monitoring result of the pressure system.

The invention discloses a testing device and method for coupling flow and heat exchange performance of a porous medium, and the testing device comprises a medium testing unit which comprises a main body pipe section and a porous medium sample installed on the main body pipe section; the airflow providing unit comprises a nitrogen cylinder and a gas rectifier, the nitrogen cylinder is connected with the main body pipe section through a gas pipe, and the gas rectifier is arranged in the pipeline; the heating unit comprises an electromagnetic induction heater, and a heating coil of the electromagnetic induction heater is wound around the position of the pipeline where the porous medium sample is installed; the measuring unit comprises a front thermocouple, a rear thermocouple, a differential pressure transmitter and an infrared thermal imager and is used for testing the temperatures of the front side and the rear side of the porous medium sample, the pressure difference of the front side and the rear side and temperature rise data; the device not only can be used for measuring the permeability and the inertial resistance coefficient of the porous medium, but also can be used for testing the forced convection heat transfer coefficient of fluid and a solid matrix in the porous medium.

This utility model relates to the field of fabric testing technology, and in particular to a rapid tear resistance testing mechanism for rolled polyester fabric. The mechanism includes a frame on which a testing device is mounted for testing the tear resistance of the fabric. The testing device includes: a main component comprising a base plate fixed inside the frame, four circumferentially arranged grooves inside the base plate, a front slide frame slidably mounted inside the grooves, a cylindrical seat fixed in the center of the base plate, a rotating plate rotatably mounted on the lower outer wall of the cylindrical seat, connecting rods pivotally connected to the four corners of the bottom of the rotating plate, and the other end of each connecting rod pivotally connected to the bottom of the front slide frame; a driving component on the base plate for driving the rotating plate to rotate; and a clamping component mounted on the front slide frame for clamping and fixing the fabric. Synchronous radial movement achieves adaptive centering and uniform clamping of the fabric, and lever principle amplifies the clamping force, effectively preventing fabric slippage during testing and ensuring accurate and reliable test results.

The present invention provides a test method and a test device for an IV curve of a heterojunction battery. The test method comprises the following steps: performing an initial forward scan and an initial reverse scan on the heterojunction battery to obtain an initial forward scan current-voltage curve and an initial reverse scan current-voltage curve; calculating and obtaining a forward scan power curve and a reverse scan power curve, wherein the forward scan power curve and the reverse scan power curve form a closed area in a power-voltage coordinate system; dividing the closed area into a plurality of closed sub-areas by a plurality of straight lines perpendicular to the voltage axis; performing a second forward scan and a second reverse scan on the heterojunction battery according to the change in the area of ​​the closed sub-areas; forming a second forward scan current-voltage curve and a second reverse scan current-voltage curve, and fitting the second forward scan current-voltage curve and the second reverse scan current-voltage curve to obtain a final current-voltage curve. The above test method can eliminate the test error introduced by the hysteresis effect.

The invention discloses a hemispherical charged particle energy analyzer, which belongs to the technical field of charged particle energy spectrum testing, and comprises an inner / outer hemispherical electrode, an electrostatic lens, a deceleration electrode, a detector and a fringe electric field correction electrode, through the arrangement of the inner and outer concentric fringe electric field correction electrodes, the fringe electric field effect of the inner hemisphere electrode and the outer hemisphere electrode can be effectively corrected, and an effective fringe electric field correction effect is realized in different charged particle initial energy and selective passing energy test scenes. The problem that the flight track of charged particles is widened due to the fringe electric field effect is effectively relieved, and the energy resolution of energy spectrum testing is improved. Furthermore, the electrostatic lens adopts an eccentric incidence mode to enable the charged particles to enter the hemispherical deflector from the eccentric position, the eccentric incidence mode can further restrain the problem of broadening of the trajectory of the charged particles, and the energy spectrum resolution is improved.

The utility model relates to a kind of lightweight foaming shoe material testing devices in material testing technical field, comprising: rack;Rotary frame, rotation is connected in the rack front side by pivot, the circumferential of the rotary frame is evenly ringed and is equipped with at least two poking wheels;Annular mounting bracket, it is connected with rack and surrounds the outer periphery of the rotary frame, at least two radial extension installation sliding slot are evenly ringed on the mounting bracket;Clamping assembly, installation is in installation sliding slot, for clamping sample;Driving motor, fixed installation is in the rack, and output end is connected with rotary frame transmission, for driving rotary frame rotation, make poking wheel periodic poking sample and produce bending deformation;The utility model is matched by the cooperation design of multiple clamping assemblies of annular distribution and multiple poking wheels of coaxial rotation, realizes single driving synchronous test multiple groups of samples, and compared with traditional single sample test equipment efficiency has been promoted, and then short research and development verification period can be.

This invention proposes a method and apparatus for measuring ambient temperature based on a liquid antenna, belonging to the field of temperature measurement technology. The method includes: installing a liquid antenna in the environment to be tested; calibrating the correspondence between the resonant frequency of the liquid antenna and the ambient temperature; determining a first resonant frequency corresponding to a preset ambient temperature value based on the calibrated correspondence; measuring a second resonant frequency of the liquid antenna; calculating the difference between the second resonant frequency and the first resonant frequency; and determining whether the difference is within a preset limit range. If so, the ambient temperature is deemed acceptable; otherwise, the ambient temperature is deemed unacceptable. This invention, as a whole, can eliminate test errors introduced by sensor performance aging while ensuring test consistency and accuracy, significantly improving test efficiency and measurement accuracy, and reducing test costs.