13results about How to "Enable accurate testing" patented technology

The invention discloses an LPDDR5 chip testing method and an adapter plate, and relates to the technical field of chip testing. The method comprises the following steps: designing an adapter plate according to the layout of an LPDDR5 chip; the periphery of the bottom of the adapter plate is subjected to groove milling, so that the adapter plate is divided into an upper layer part and a lower layer part, and four extension plates are formed; a test bonding pad is arranged on the surface of each extension plate; the test points of the line routing are led out to the surface of the adapter plate and are connected with the corresponding test bonding pads; welding an LPDDR5 chip on the surface of the adapter plate; obtaining a test circuit board; the bottom surface of the adapter plate is welded in the mounting area, so that the LPDDR5 chip is connected with the test circuit board through the adapter plate; the test bonding pad is connected with an oscilloscope, the test circuit board tests the LPDDR5 chip, and a test result is displayed through the oscilloscope. According to the method, various testing signals can be led to the oscilloscope through the testing bonding pad of the adapter plate, and accurate testing of the chip is achieved.

The invention provides an innovative measurement characterization method which integrates X-ray computed tomography (X-CT) and low-field nuclear magnetic resonance (NMR) technologies and aims at comprehensively and accurately analyzing the pore structure of the cement paste. According to the method, nano-crystalline cellulose (CNF) is introduced into a cement-based material in multiple dispersion modes, after standard curing is conducted for 7 days, nondestructive testing is conducted through the X-CT technology, two-dimensional and three-dimensional distribution of pores is qualitatively shown, meanwhile, key parameters of micron-sized pores are accurately measured, and a support is provided for macroscopic understanding of the pore structure. Furthermore, in combination with a low-field nuclear magnetic resonance technology, quantitative evaluation of a nanoscale pore structure is realized, volume information and pore size distribution characteristics of nanoscale pores are accurately acquired, the defect of X-CT in nanoscale detection is overcome, and accurate testing in a full-pore-size range from a gel pore to a non-capillary pore is realized. The combination method not only covers comprehensive analysis from microcosmic scale to macroscopic scale, but also realizes accurate visualization, and provides a new view angle and methodology for scientific research of the pore structure of the cement-based material. The method is expected to promote the development of the field of cement-based material pore structures, and provides powerful technical support and a new research direction for deep research in the field.

This utility model discloses a resistive touchscreen pressure testing device, relating to the field of touchscreen technology. It includes a base with a sliding groove; a sliding block located within the sliding groove, a support seat fixed to the sliding block, a support block fixed to the bottom of the support seat, a positioning block fixed to the base, and an electric telescopic rod mounted on the positioning block, the distal end of which is fixed to the support block; and a testing component. This utility model, through its designed testing component, ensures that when the control motor starts, the output shaft of the control motor drives the rocker arm to rotate, causing the rotating rod to move with the rocker arm's rotation, thereby driving the guide post to perform linear reciprocating motion within the sliding hole. Unlike traditional pressure testing devices, this ensures that during the pressure testing process, regardless of the applied pressure or precise pressure adjustment, it can be monitored in real time by the pressure sensor, truly achieving accurate pressure testing of the resistive touchscreen and greatly improving the pressure testing effect.

The utility model discloses an elastic member suspension tension and compression testing device, which relates to the technical field of tension and compression testing devices and comprises a base, a fixed seat is fixedly connected to the left side of the top of the base, a central controller is fixedly connected to the rear side wall of the fixed seat, and fixed frames are fixedly connected to the tops of the fixed seat and a movable sliding seat. Pressure compensation clamping assemblies are arranged in the two fixing frames, and a testing assembly is arranged on the right side of the top of the base. According to the utility model, through the arranged pressure compensation clamping assembly, pressure adjustment can be carried out according to a pressure signal fed back by a pressure sensor, and the clamping force of the elastic member suspension is ensured to be within a proper range, so that the reliability of test data is improved; the device can accurately control and adjust the magnitude of the applied tension or pressure to meet different test requirements, so that the performance of the elastic part suspension under different tension and pressure conditions is accurately evaluated.

The invention relates to the technical field of motor iron core molds, and discloses a test device for detecting the binding force between self-bonding iron core pieces, which comprises a workbench, a clamping device, a vertical moving mechanism, an auxiliary moving mechanism, a horizontal reciprocating moving mechanism, a force measuring assembly, a protection assembly and the like, and is characterized in that the clamping device is used for clamping an iron core, and a hook device is used for hanging the iron core; the vertical moving mechanism and the auxiliary moving mechanism are used for adjusting the position of the iron core, the horizontal reciprocating moving mechanism is used for simulating reciprocating motion of the iron core, the force measuring assembly is used for measuring the drawing force between the iron cores, through cooperation of all the components, accurate measurement of the iron core piece and automatic control of the clamping device are achieved, the detection precision and stability are improved, and the working efficiency is improved. And the detection application range is expanded. Meanwhile, safety is also considered in the design of the device, for example, the structural design of a protection plate, a telescopic rod, a buckle seat and the like can effectively prevent accidental splashing and protect the safety of detection personnel.

The utility model relates to a protection plate probe test tool, which is characterized by comprising a bottom plate, a battery supporting plate, a test probe and a lifting mechanism, the bottom plate is fixedly connected with the battery supporting plate, the battery supporting plate is step-shaped, a test battery is placed in a step concave table of the battery supporting plate, and the test probe is arranged on the bottom plate. The upper surface of the battery supporting plate is provided with two round pins which are in sliding fit with structural holes of a tested battery protection plate, the bottom plate is fixedly connected with a lifting mechanism, the lifting mechanism comprises an air cylinder, guide columns, a sliding block workbench and a switch handle, the sliding block workbench is connected with the air cylinder, the air cylinder drives the sliding block workbench to slide and lift on the guide columns which are parallel to each other, and the switch handle is connected with the air cylinder. The air cylinder is connected with a switch handle, the front end of the sliding block workbench is fixedly connected with a test probe, and the test probe is aligned with the position of a battery test terminal. According to the utility model, two hands of an operator are liberated, functions of battery positioning, jacking and the like are adopted, accurate testing of equipment battery terminals is realized, and the testing efficiency is greatly improved.

The invention belongs to the field of identification, classification and safety management of dangerous chemicals, and particularly relates to a solid treatment device and a solid oxidability testing method. The device comprises a working box, and a grinding assembly, a sieve plate assembly and a collecting assembly which are sequentially arranged in the working box from top to bottom. The grinding assembly is constructed to be capable of grinding solids into solid particles and pouring the solid particles onto the sieve plate assembly, the sieve plate assembly is constructed to be capable of screening the solid particles, and the collecting assembly is constructed to be capable of collecting screened solid samples. According to the device, the controllability degree of factors such as granularity and humidity of a solid sample prepared when the solid is subjected to an oxidability test is improved, so that the accuracy, the precision and the test efficiency of a solid oxidability test result are improved.

The invention discloses a portable controller parameter detection system, which comprises a power supply conversion control circuit used for carrying out conversion and voltage stabilization processing on an external input power supply and providing stable and adaptive working voltage for a numerical control power supply board control circuit, a signal acquisition circuit, an RS232 communication circuit, an AD sampling board, an industrial control board and a display. According to the invention, accurate testing and automatic determination of the controller are realized. The equipment not only has the advantages of high test precision, simple and convenient operation, convenient carrying and the like, but also greatly improves the working efficiency and precision of controller detection through the functions of database management, automatic report generation and the like.

The invention relates to a vehicle braking dragging torque energy consumption testing method and device, a vehicle and a storage medium, and the method comprises the steps: controlling a preset rack system to be in a no-load operation state, and enabling the preset rack system to be in a first state when the current tested vehicle is in a first state; calculating first dragging loss according to the first wheel end rotating speed signal, the first torque signal, the first starting moment and the first ending moment of the current measured vehicle; the preset rack system is controlled to be in a preset cycle working condition operation state, and when the current tested vehicle is in a second state, second dragging loss is calculated according to a second wheel end rotating speed signal, a second torque signal, a second starting moment and a second ending moment of the current tested vehicle; and obtaining the brake dragging loss of the current tested vehicle according to the difference value between the second dragging loss and the first dragging loss. Therefore, the problem that an existing testing method is low in accuracy is solved, accurate testing of the dragging problem of the vehicle braking system is achieved, operation is convenient, and practicability is high.

The utility model provides a device for measuring suction dynamic and static torques of a clutch water pump. The device comprises a rack and a double-station integrated operating platform made of self-made aluminum alloy, the dynamic test fixture and the static test fixture are mounted on the rack; the rack is further provided with a plurality of electrical assemblies including a hundred-inspection data recording industrial personal computer, a torque sensor and a displayer. Through the arrangement of the self-made aluminum alloy double-station integrated operation table, the test of the suction dynamic and static torque of the clutch water pump can be carried out on the same operation table at the same time, and the test content can be conveniently switched through the dynamic test clamp and the static test clamp which are respectively arranged; accurate testing is realized by arranging a plurality of electrical components including a 100-test data recording industrial personal computer, a torque sensor and a display instrument, and the problem of leak detection is avoided.

The invention provides an insulativity detection device for a finished product for processing a rubber product of electric power equipment, which comprises a detection table, first sliding blocks are arranged at the left and right ends of the exterior of a first sliding rod, and a second motor is arranged on the side edge of a second sliding rod. According to the insulating property detection device for the finished product for processing the electric power equipment rubber product, the first sliding block slides on the first sliding rod under the driving of the first motor, so that the clamp approaches and clamps the electric power equipment rubber product through the sliding of the first sliding block, and the electric power equipment rubber product is clamped through the sliding of the first sliding block; the electric power equipment rubber product can be accurately clamped, meanwhile, through clamping and fixing of the clamp, the electric power equipment rubber product is kept at the correct position and form in the detection process, and measurement errors caused by vibration or movement of the electric power equipment rubber product in the testing process are prevented; and meanwhile, the electric power equipment rubber product is prevented from generating electric arc or discharge in the testing process, so that the safety of testing personnel and testing equipment is protected.

The invention relates to the technical field of wireless communication testing, and provides a line loss testing system and method, electronic equipment and a storage medium. The line loss test system comprises: a test fixture; the line loss calibration piece is configured on the test fixture and is connected with the receiving port of the test fixture through a test probe of the test fixture; the comprehensive test instrument is connected with the line loss calibration piece through the radio frequency line to be tested, and the comprehensive test instrument is used for sending out or receiving a test signal according to the test instruction; and the PC terminal is in communication connection with the test fixture and the comprehensive test instrument and is used for sending a test instruction to the comprehensive test instrument. Through the line loss test system provided by the embodiment of the invention, the accuracy of line loss detection can be improved, the production test efficiency is effectively improved, and the test cost is saved.

The utility model belongs to the technical field of special equipment inspection, and particularly relates to a resuscitator calibrator which comprises a box body, and a high-pressure air source pipeline system, a low-pressure air tightness detection pipeline system, a low-pressure pressure flow test pipeline system and a drainage test pipeline system are arranged in the box body. The high-pressure gas source pipeline system comprises a high-pressure gas source, a gas source pressure reducer, a stop valve and a resuscitator pressure reducer connector which are connected in sequence, and a pressure gauge I and an exhaust valve are connected between the stop valve and the resuscitator pressure reducer connector; the low-pressure airtight detection pipeline system comprises a pressure generating device, and the pressure generating device is connected with a U-shaped pressure gauge and a low-pressure system interface through a tee joint. According to the utility model, the high-pressure air source pipeline system, the low-pressure air tightness detection pipeline system, the low-pressure pressure flow test pipeline system and the drainage test pipeline system are integrated, and various performances of the resuscitator can be comprehensively detected, so that the reliability and the effectiveness of the resuscitator in the emergency treatment process are ensured.