54results about How to "The testing process is simple" patented technology

The utility model discloses a burning test fixture for a PCB (Printed Circuit Board), which comprises a test platform, a control circuit board, a test probe and a display screen, and is characterized in that the test platform is used for fixing the PCB to be tested; the control circuit board is installed in the test platform. The test probe is electrically connected with the control circuit board and is used for being in contact with a test point of the PCB; the display screen is installed on the test platform, is electrically connected with the control circuit board, and is used for displaying test data. Direct display of test data is realized through the integrated display screen, and an external computer terminal is not needed; a user can check a test result in real time, data transmission and display through external equipment are not needed, and the test intuition and response speed are remarkably improved; and the fixture can be more conveniently applied to workshops, laboratories or mobile test scenes without depending on an external computer terminal, so that the adaptability is higher.

The application relates to a device performance test method and device, computer equipment and a storage medium. The method is applied to an upper computer, the upper computer is in communication connection with a benchmark communication device and a to-be-tested communication device respectively, the benchmark communication device and the to-be-tested communication device are in communication connection through at least one line, and the method comprises the following steps: acquiring a test strategy for data receiving performance test of the to-be-tested communication device; controlling the benchmark communication device to send message data to the to-be-tested communication device through at least one target line matched with the test strategy; acquiring message receiving conditions of the to-be-tested communication device for receiving the sent message data through the target lines; and determining whether the data receiving performance of the to-be-tested communication device is normal according to different message receiving conditions. The method can effectively detect the data receiving performance of the device.

The invention discloses a photoelectric sensor system conversion efficiency calibration system and method based on a reverberation chamber, and belongs to the technical field of photoelectric sensor conversion efficiency calibration, the system comprises an electric wave reverberation chamber, a transmitting antenna, a reference antenna and a photoelectric field sensor system; the photoelectric field sensor system is composed of a photoelectric sensor, a laser source, a photoelectric detector, a polarization maintaining optical fiber and a single-mode optical fiber. In the calibration process, the reference antenna and the photoelectric sensor system are used as receiving ends respectively, receiving power at different stirring positions in the reverberation chamber is sampled to obtain two groups of transfer functions, and the total efficiency of the photoelectric sensor system is determined by comparing the two groups of transfer functions under the condition that the radiation efficiency of the reference antenna is known. The conversion efficiency of the photoelectric sensor system is obtained by combining the relation among the power, the field intensity and the total efficiency in the free space; and the effective averaging of the incident direction and the polarization state is realized by using the uniform and isotropic electromagnetic field characteristics of the reverberation chamber.

The utility model belongs to the technical field of protection devices, and particularly relates to a temperature detection device for live equipment, which comprises a detection host, a temperature detection assembly is arranged at the bottom of the detection host, a detection needle is arranged at the detection end of the temperature detection assembly, and a connecting disc is fixedly connected to the outer side of the top of the detection needle. First clamping grooves are formed in the two sides of the connecting disc, a fixing assembly is arranged on the outer side of the connecting disc, second bolts which are evenly distributed are arranged at the fixing end of the fixing assembly, and clamping pieces are arranged on the inner sides of the second bolts; according to the live equipment temperature detection device provided by the utility model, the second clamping groove and the first clamping groove are clamped at the same time through the clamping piece, so that the connecting disc and the connecting ring are fixedly connected, the detection host and the temperature detection assembly are rapidly detached from the fixing assembly by rapidly detaching the connecting piece, no extra tool is needed, and the cost is reduced. Installation and detachment are quicker and more convenient, operation efficiency is greatly improved, and downtime is shortened.

The utility model discloses an air tightness detection device for a water pump of a dish-washing machine. The stand columns are vertically arranged on the base; the upper pressing plate is connected to the top of the stand column; the sealing seat is mounted on the base, the sealing seat is provided with a detection cavity for accommodating a pump body of a water pump to be detected, and the detection cavity is communicated with a vacuum interface; the sealing ring is arranged on the sealing seat, and the sealing ring is suitable for forming airtight sealing with the water pump body placed in the detection cavity; and the downward pressing mechanism is mounted on the upper pressing plate. The beneficial effects of the utility model are that the special test tool provided by the utility model optimizes the sealing / pressurizing mode, significantly shortens the airtightness test time of a single water pump, does not need to be installed on the whole dish-washing machine, simplifies the test process, and greatly improves the overall detection efficiency on a production line.

The utility model discloses a test platform for a compression bearing capacity test for a wind power test, and belongs to the technical field of wind power construction, the test platform for the compression bearing capacity test for the wind power test comprises a base, and the front end and the rear end of a lower pressing plate are rotationally connected with pushing mechanisms; the front end and the rear end of the sliding shaft are fixedly connected with sliding mechanisms, the top of the base is slidably connected with a limiting mechanism, and the outward end of the sliding shaft is fixedly connected with a reset mechanism. According to the utility model, the lower pressing plate is driven by the electric push rod, so that the compression bearing capacity of the wind power equipment can be quickly and accurately tested, the automation degree of the test process is high, the manual intervention is reduced, and the test efficiency is improved; the bearing plate is automatically inclined after the test is completed, and automatic unloading is realized by utilizing the dead weight of the wind power equipment, so that tedious operation of manual carrying is avoided, and time and labor cost are saved; and through cooperation of the tension spring and the guide rail, the bearing plate can be automatically reset to the initial position after unloading, and extra operation is not needed.

This invention relates to the field of power equipment testing technology, specifically to a detector and method for detecting the operational status of disconnecting switches in GIS equipment. The method first generates an action signal based on a first current; then generates a second current and a trigger signal based on the action signal; next, it calculates the current change rate based on the first and second currents; and based on the trigger signal, it determines whether the current change rate is less than a first threshold. If the current change rate is less than the first threshold, an alarm signal is generated. Finally, it determines whether the closing and opening of the circuit breaker are qualified based on the alarm signal. By detecting the induced current generated on the conductor of the grounding switch in the energized part of the GIS equipment, the opening and closing status of the internal disconnecting switch of the GIS equipment is judged. Regardless of whether the mechanical structure of the equipment is normal, it can accurately determine whether the disconnecting switch is properly closed or open, effectively avoiding faults such as discharge, short circuit, and explosion caused by improper closing or opening of the equipment.

The utility model relates to the technical field of tire performance testing, in particular to a tire puncture resistance testing device, which comprises a bottom plate, four groups of support columns, a top plate, a plurality of rows of puncture mechanisms, a position adjusting mechanism, a moving mechanism, a lifting mechanism, a lifting plate and a mounting mechanism, and is characterized in that the four groups of support columns are connected with the top end of the bottom plate, and the top plate is connected with the top ends of the four groups of support columns; the position adjusting mechanism is installed at the bottom end of the top plate, the moving mechanism is installed at the bottom end of the position adjusting mechanism, the lifting mechanism is installed at the bottom end of the moving mechanism, and the lifting plate is connected with the bottom end of the lifting mechanism. The multiple rows of puncture mechanisms are arranged and mounted at the top end of the bottom plate, the multiple rows of puncture mechanisms are used for testing tires of different specifications and types, and each of the multiple rows of puncture mechanisms comprises a fixing plate and multiple groups of puncture needles. The utility model provides a tire puncture resistance testing device, and aims to solve the problems of inconvenience in operation, inaccurate testing result, poor universality and the like of a tire puncture resistance testing device in the prior art.

The invention relates to the technical field of circuit system analysis, in particular to a method, a system and equipment for measuring parameters of a transformer. An excitation current source is applied to the primary side of a to-be-measured transformer, an open circuit of the secondary side is kept, the alternating voltage of the secondary side is measured, the real part and the imaginary part of the ratio of the alternating voltage of a secondary side winding to the alternating input current of a primary side winding are calculated, and the excitation resistance and the excitation inductance of a magnetic core are obtained according to the real part and the imaginary part. Stopping applying excitation, measuring port resistance and inductance from a primary side port, and calculating primary side leakage resistance and leakage inductance in combination with obtained excitation parameters; and opening the primary side, measuring the port resistance and inductance from the secondary side port, and calculating the secondary side leakage resistance and leakage inductance in combination with excitation parameters. The testing method is easy and convenient to operate, the calculation process is simplified, and the parameter measuring precision of the transformer is effectively improved.

This utility model discloses a modular intelligent narrow-body frequency converter cabinet system, comprising: a narrow-body cabinet with internal module installation space, air inlet, and air outlet; a modular backplane system integrating a main circuit busbar and a control / auxiliary power bus; at least one standard functional module with standardized mechanical and electrical interfaces, pluggably installed in the cabinet and connected to the backplane system for implementing specific power conversion or control functions; and an intelligent thermal management system including a temperature sensor, an adjustable-speed fan, and a fan controller, capable of adjusting the fan speed according to temperature information to control airflow within the cabinet. This utility model, through modular design and intelligent thermal management, achieves high system integration, excellent maintainability, flexible configuration capabilities, and efficient heat dissipation, making it suitable for high-power frequency converter applications in industrial drives, new energy, and other fields.

The invention provides a ducted thruster thrust testing device and testing method. The thrust testing device comprises an air duct type mounting base, an axial linear moving platform, a ducted fan, an air inlet pipe, an air outlet pipe, an auxiliary fan and a pull pressure sensor assembly. The ducted fan comprises a ducted shell and a core assembly, the core assembly comprises a supporting guide vane, an impeller and a motor assembly, a linear cylindrical guide rail assembly is arranged between the supporting guide vane and the ducted shell, and the thrust value of the core assembly can be independently measured through the arrangement of the linear cylindrical guide rail assembly. The thrust value of the core assembly is compared with the overall thrust value of the ducted fan, and the influence of the ducted shell on the thrust is evaluated; if the overall thrust value is larger than the thrust value of the core assembly, it is indicated that the thrust of the ducted shell is increased; if the overall thrust value is smaller than the thrust value of the core assembly, it shows that the duct shell causes energy loss.

The invention provides a crane AHC function verification method based on a land environment, and the method comprises the following steps: constructing a land environment crane AHC function verification system, performing a land environment crane AHC function verification test; obtaining actual data and comparing the actual data with test record data to determine compensation precision; obtaining a load actual swing attitude, load actual movement displacement data and winch actual movement data; at least one kind of actual data in the load swing posture, the actual movement displacement data and the winch movement data is compared with theoretical data so as to verify the compensation precision of the AHC function, and effective verification of the crane AHC function precision is achieved.

The utility model relates to the technical field of coupler unit detection, and particularly discloses a coupler unit air tightness testing device which comprises a rack, a pressure gauge, a control button, an A-type operation air cylinder auxiliary tool, an uncoupling air cylinder auxiliary tool, a main air pipe auxiliary tool, an L-type operation air cylinder auxiliary tool and a shunting device. According to the utility model, through the cooperation of the shunting device and the four air path control valves, the air tightness test can be simultaneously or respectively carried out on four key components, namely the A-type operation air cylinder, the unhooking air cylinder, the main air pipe and the L-type operation air cylinder. The parallel test capability greatly shortens the overall test time, significantly improves the working efficiency of the air tightness test of the coupler unit, is especially suitable for large-scale production or maintenance scenes, can effectively reduce the downtime of equipment, and accelerates the production or maintenance progress.

The application discloses a kind of calibration chip sets for calibrating error factor of chip to be measured, the calibration chip set includes short-circuit calibration chip, open-circuit calibration chip, matching load calibration chip and straight-through calibration chip, any calibration chip in the calibration chip set is identical with the size of the chip to be measured, wherein the test pin of the short-circuit calibration chip is short-circuit connected with the ground metal layer itself;The test pin of the open-circuit calibration chip is open between the ground metal layer itself;The test pin of the matching load calibration chip is connected with the ground metal layer itself through load resistance;Two test pins of the straight-through calibration chip are electrically connected between the two test pins of the straight-through relationship on the straight-through calibration chip.The calibration chip used in the application directly sets the calibration reference surface of the vector network analyzer at the pin of the packaged chip, without additional consideration of the parasitic parameter introduced by the test fixture, improves the test accuracy of the chip, simplifies the calibration step and test data processing process.

This disclosure provides a test structure and a test method for short-circuit window, contact resistance, and sheet resistance. The test structure includes: a substrate with an isolation structure therein; a gate structure located above the isolation structure; an active region located above the substrate; multiple contact plugs located above the active region and electrically connected to the active region, the contact plugs being arranged in an array; the gate structure being arranged in a serpentine pattern, the gate structure being adjacent to and spaced apart from the sidewalls of each contact plug; a first pad electrically connected to the gate structure; a second pad and a third pad electrically connected to different contact plugs, respectively; a fourth pad electrically connected to the gate structure, and the fourth pad and the first pad being located at opposite ends of the gate structure; the width of the isolation structure is greater than or equal to the width of the gate structure, and the shortest distance from the contact plug to the gate structure is the test distance. Using the above technical solution, the test requirements for short-circuit window, contact resistance, and sheet resistance can be met, and the test accuracy can be improved.

The invention relates to the field of phase-change switches, and provides a preparation process of a phase-change material layer in order to solve the problem that an existing phase-change material layer is initially in a high-resistance state and needs to be electrically initialized, and the preparation process comprises the following steps: S100, preparing a GeTe phase-change film through a photoetching process and a magnetron sputtering process; s200, preparing a phase change material layer from the phase change film through an annealing process; the initial vacuum degree of the annealing process is lt; the pressure is 5 * 10 <-2 > Pa, the annealing temperature is 280-350 DEG C, and the heating rate is 1t; the temperature is 20 DEG C / min, and the annealing time is gt; the time is 20 minutes. According to the invention, the first-time electric stress impact is eliminated, the destructive first-time switching operation is fundamentally avoided, the device enters a working state from the beginning under mild and uniform heat treatment, the generation of initial defects is greatly reduced, and the initial point of phase change fatigue is delayed, so that the recyclable operation life of the device is remarkably prolonged; according to the device provided by the invention, the first switching operation is omitted, the complexity of driving circuit design of the chip and the cost of chip test are reduced, and the design and test are simplified.

This invention relates to a method for inclining tests on heavy-lift vessels equipped with at least one crane. The method comprises the following steps: using the crane's boom as a movable weight, controlling the boom to rotate sequentially to several predetermined positions, and recording the heeling moment of the boom at each predetermined position, resulting in the heeling angle of the vessel, thus completing the inclining test. This method utilizes the crane's own weight and free left-right rotation to replace the traditional method of moving a heavy weight and ballast water, generating the moment required for the inclining test, thereby obtaining the vessel's center of gravity height using the heeling angle.

A service life testing device for pressure spring production comprises a testing platform, a testing box used for testing the service life of a pressure spring is fixedly installed on the testing platform, an opening facilitating taking and placing of the pressure spring is formed in the top of the testing box, and the opening is sealed through a sealing cover; transversely-arranged supporting shafts are inserted into the two sides of the testing box, a clamping gap used for being matched with a pressure spring is reserved between the supporting shafts, clamping plates matched with the pressure spring are fixedly installed on the supporting shafts in the testing box, clamping columns are further arranged on the clamping plates, and transverse driving devices are fixedly installed on the testing platform on the two sides of the testing box. The driving end of the transverse driving device is in transmission connection with a supporting shaft outside the test box; a heat exchange device is further installed in the test box, and a temperature and humidity instrument is further installed on the test box. By simulating the stress condition of the pressure spring in actual use, the service life of the pressure spring is tested, so that the durability and the service life of the pressure spring are evaluated.

This invention relates to the field of ground testing technology for spacecraft attitude control systems, specifically providing a ground testing method for the accuracy of a multi-level composite attitude control system. First, a fully physical simulation ground testing platform is constructed, including an on-orbit environment simulation system and a multi-level composite attitude control simulation system. Two reference calibration devices are built using a calibrated dual-axis photoelectric autocollimator, and two measurement reference units are constructed using the dual-axis photoelectric autocollimator and a multifaceted prism. Based on a cubic mirror, the calibrated dual-axis photoelectric autocollimator, and the dual-axis photoelectric autocollimator, zero-position reference calibration and angle calibration are performed on the multi-level composite attitude control simulation system. After calibration, the multi-level composite attitude control simulation system is controlled to move from the initial position to the final position, and angle information is collected through the two measurement reference units. The attitude control accuracy is calculated based on the angle information. This invention realizes ground testing of a multi-level composite attitude control system based on fully physical simulation.

The utility model provides a kind of rack for frameless door anti-pinch force test, belong to automobile manufacturing technical field.The utility model is by being provided with door fixed clamp on frame body, the frame body is placed on the base of the frameless door to be detected and is clamped, ensure the stability when testing, simultaneously, horizontal transverse sliding member is provided on the top frame of frame body, and horizontal longitudinal sliding member is slidably provided on horizontal transverse sliding member, lifting piece is slidably provided on horizontal longitudinal sliding member, and the end of lifting piece is used as barrier or installs anti-pinch force tester, realize the adjustment of arbitrary position in space, comprehensively cover each test point on door, and not be influenced by door structure, better adaptability, adjustment operation is easy, test easy operation, test efficiency is high, can also guarantee the accuracy of test structure simultaneously, benefit accurate and complete evaluation of the performance of window anti-pinch system.

The present application belongs to the technical field of lithium battery, especially to a method for testing electronic conductivity of solid electrolyte. The steps of the present application are as follows: S1, preparing solid electrolyte sheet: taking solid battery material and placing it in a mold, then pressurizing and pressure maintaining the mold, obtaining the solid electrolyte sheet and measuring its thickness and bottom diameter; S2, conductivity test: pretreating the solid electrolyte sheet, then using a constant potential instrument to measure the direct current polarization of the solid electrolyte sheet under step voltage of 0.1 V, 0.2 V, 0.3 V, 0.4 V and 0.5 V, respectively, to obtain current data under constant voltage polarization; S3, data processing: drawing the direct current polarization curve and the equilibrium current response curve under step voltage by using the obtained current data, and calculating the electronic conductivity of the solid electrolyte sheet. The method of the present application is simple in testing, short in testing time and reliable in data.

The present application belongs to the field of spacecraft propellant measurement technology, and discloses a propellant residual quantity measurement system based on liquid sloshing power, which comprises a sloshing platform, a propellant tank installed on the sloshing platform, a vibrator top rod of a vibrator fixedly connected with the sloshing platform, and a three-axis force sensor installed at the center of the bottom of the propellant tank; a signal generator, a power amplifier and the vibrator are sequentially signal connected, and the three-axis force sensor, a strain amplifier, a data acquisition instrument and a data processing unit are sequentially signal connected. The present application also discloses a propellant residual quantity measurement method, wherein a step signal output by the signal generator is transmitted to the vibrator through the power amplifier, the vibrator gives the sloshing platform an excitation parallel to the X axis, the three-axis force sensor collects an analog signal of the sloshing power and converts the analog signal into a data signal through the data acquisition instrument to send to the data processing unit to obtain the propellant residual quantity. The present application provides a new propellant residual quantity measurement method and idea.

The invention relates to the technical field of software testing, and discloses a cross-end and cross-region interface test node deployment method and system, and the method comprises the steps: building and maintaining a dynamically updated schedulable resource pool based on the node state information, such as the operation platform type, the network region identifier and the available resource state, of a distributed test node; receiving an interface test task containing an operation platform condition, a regional constraint condition and a comparability grade parameter; if cross-node result comparability is needed, a first test node meeting multiple conditions is screened from a resource pool based on an equivalence constraint condition, and the equivalence constraint condition guarantees the equivalence of the node in the aspect of influencing the consistency of test results; and determining a target test node from the first test nodes, distributing a task, and receiving a test execution result returned by the target test node. According to the method, automatic deployment and dynamic scheduling of the test nodes are realized, cross-end and cross-region test efficiency and result credibility are improved, and the method is suitable for a distributed interface test scene.

The utility model relates to the technical field of ceramic dry pressing equipment, in particular to an automatic feeding device of a ceramic dry press, which comprises a storage barrel, a feeding boot, a valve switch, a feeding pipeline and a dry pressing platform. A mold groove is formed in the front end of the top of the dry pressing platform; a discharging pipe is arranged at the bottom of the storage barrel, the valve switch is arranged on the upper portion of the discharging pipe, the bottom end of the discharging pipe is communicated with a feeding port in the rear side of the top of the feeding boot through the feeding pipeline, and the feeding pipeline is a hose. A discharging port capable of communicating with the mold groove is formed in the bottom of the feeding boot, and the feeding boot is driven by a driving mechanism to do reciprocating motion in the length direction of the upper surface of the dry pressing platform. Powder can be continuously and stably supplied to the dry press, frequent manual operation is not needed, and therefore the production period is remarkably shortened.

This invention relates to the field of ship propeller shaft system testing technology, specifically to a test device and method for flipping a ship's stern bearing. It mainly consists of a bearing flipping device base, a bearing flipping device liner, a bearing flipping device handle, and related connecting parts. It is connected to the end faces of the stern bearing at the bow and stern ends, respectively. The stern bearing can be flipped by rotating the bearing flipping device handle, and the upper and lower bearing sleeves of the stern bearing can be lifted using the ring screws on the device. This invention utilizes the principle of relative sliding between the friction pair of a sliding bearing and a supporting shaft to flip the ship's stern bearing on the test platform. It enables rapid flipping of the ship's stern bearing, is easy to operate, and achieves stern bearing flipping without disassembling the test shaft, significantly simplifying the testing process, reducing the lifting work of heavy components, effectively eliminating safety and quality hazards caused by disassembly and assembly, and improving overall testing efficiency.

The present disclosure provides a memory capacitor stability test method, device and equipment. In the method, the test device writes logic levels into all capacitors of the memory to be tested, and reads the logic levels from all capacitors of the memory. The steps of writing and reading are repeated to obtain multiple groups of logic levels written into the capacitors of the memory and logic levels read out, and transmit to the computer equipment. The computer equipment determines the number of failed capacitors in the memory in each test according to the multiple groups of logic levels written into the capacitors of the memory and the logic levels read out, and finally determines the stability of the memory capacitor according to the change of the multiple groups of capacitor failure numbers. Through the comparison of the written and read levels, the capacitor test can be realized in the circuit test stage without waiting for a long time, the stability of the capacitor is quickly verified, the test process is simple and the test time is short, and the test efficiency of the memory capacitor is effectively improved.

The invention discloses a pressure test system for a hydraulic element, and the system at least comprises a multi-stage pressure test module and a control unit, the control unit is electrically connected with the multi-stage pressure test module, the multi-stage pressure test module comprises multi-stage pressure test loops which are connected in parallel, and the multi-stage pressure test loops are electrically connected with the control unit. Wherein the multi-stage pressure test loop comprises a manual pump test loop, a motor pump test loop and a pneumatic pump test loop, and the control unit is used for controlling the multi-stage pressure test module to be switched to a target pressure test loop according to a test requirement so as to provide a pressure signal of a corresponding magnitude; and synchronously receiving the pressure signal of the corresponding magnitude and dynamically adjusting the pressure so as to adapt to the pressure test of the hydraulic element. By means of the scheme, the pressure testing efficiency and precision can be remarkably improved.

The utility model discloses a device for testing the friction force between a piston rod and a guider of a shock absorber, which comprises a shock absorber cylinder barrel, a piston assembly, a guider, a floating piston, a fixed barrel, a connecting nut and a data acquisition system, and is characterized in that the shock absorber cylinder barrel is used for storing a liquid medium and simulating the internal environment of the shock absorber; the piston assembly comprises a piston rod and can reciprocate along the shock absorber cylinder barrel, the guiders are fixed to the two ends of the shock absorber cylinder barrel to guide and seal the piston rod, the floating piston adjusts the pressure in the shock absorber cylinder barrel through the inflation system, the fixed barrel is matched with the movement range of the piston rod, and the connecting nut is used for being connected with external testing equipment. The data acquisition system monitors displacement, speed and damping force parameters in real time, interference of other parts in the shock absorber is isolated through modular design, and independent testing of a piston rod and a guider friction pair is achieved. The shock absorber cylinder simulates the real working condition, the pressure environment can be dynamically adjusted through combination of the floating piston and the inflation system, and the problem that an existing pressure condition is single is solved.

This application proposes a display testing circuit and circuit protection board, which integrates multiple functional components to achieve multiple tests on the display and its related devices. The circuit consists of two main parts: a testing circuit and a testing transfer board. The testing circuit comprises a light sensor, a switch, LEDs, and a connector module. Specifically, the light sensor is used to monitor changes in the display's light intensity in real time and detect its operating status; the switch and LEDs are connected in series via the transfer board circuit, and the LEDs provide status indication under the control of the switch. The switch and LEDs, as one of the devices under test, can provide feedback on the circuit's operating status and display the test results. This circuit design integrates the testing functions of multiple devices onto a single board, simplifying the testing process, enabling the production line to efficiently complete multiple testing tasks, improving testing accuracy and production efficiency, while reducing system complexity and failure rate.