50results about How to "Reduce test error" patented technology

The invention provides a photoelectric sensing inertial sensor and a manufacturing method thereof, and the sensor comprises a semiconductor substrate which is internally provided with an annular cavity; a light conduction device is arranged in a circle defined by the annular cavity and is used for transmitting light to the inner side wall of the circumference of the annular cavity along the radius; the light source is used for emitting light rays vertically emitted to the circumferential plane of the annular cavity; a modulation device is arranged in a vertical projection area of the light source to the plane where the light conduction device is located and used for modulating a light source beam to the radius direction of the annular cavity; the light receiving devices are uniformly arranged on the circumferential side wall of the outer side of the annular cavity; and the inertial body is located in the annular cavity and can rotate around the annular cavity, and when the inertial body rotates to the position of a certain light receiving device, the inertial body can shield the light receiving device to receive light beams. According to the invention, the miniaturization of the sensing device is realized, the manufacturing cost is greatly reduced, the comprehensive damping is small, the test error is low, and the impact resistance is higher.

The utility model relates to the technical field of magnetic device testing, in particular to a magnetic device multi-station testing mechanism which comprises a carrying mechanism and a testing mechanism, the carrying mechanism comprises a portal frame, a carrying transmission module, a carrying connecting frame and a carrying grabbing module, and the testing mechanism comprises a Y-axis transmission module, a testing station and a testing jig. The carrying transmission module is arranged on the portal frame, the multiple carrying grabbing modules are arranged, the carrying connecting frame is arranged on the Y-axis transmission module, the multiple carrying grabbing modules are arranged on the carrying connecting frame side by side, the testing station is provided with an upper testing module and a lower testing module, and the upper testing module and the lower testing module are oppositely arranged. Therefore, the magnetic device on the test fixture can be tested. The device is high in automation degree, a series of operations such as carrying of magnetic devices and testing of each item are automatically completed, manual intervention is reduced, and labor cost is reduced.

The utility model relates to the technical field of solid state disk testing, and discloses a plugging mechanism for a hot plugging test of a solid state disk, a plugging force testing machine is used for carrying out the hot plugging test on the solid state disk in a matching manner, and the top of the plugging force testing machine is provided with an installation platform. The right side of the top of the mounting platform is provided with a clamping mechanism which is matched with the hot plug detection unit for clamping and positioning, and the hot plug detection unit is provided with a detection socket which is matched with the insertion detection of the solid state disk; the clamping mechanism is used for clamping and positioning hard disk racks of different sizes, the clamping mechanism is installed on a lifting platform of the lifting mechanism, the lifting mechanism is used for adjusting the height of the hard disk racks, and the hard disk racks are used for clamping and positioning solid state disks; the rotary reciprocating mechanism converts rotation into linear motion and reciprocatingly inserts and pulls the plugging port of the solid state disk into and out of the hot plug detection unit, so that automatic plugging detection of the solid state disk can be realized, and the automation degree is high.

The utility model discloses a PCBA (Printed Circuit Board Assembly) test fixture in the technical field of PCBA test, and aims to solve the problems of insufficient positioning accuracy, poor adaptability, insufficient clamping stability, damage to the surface of a PCB (Printed Circuit Board) and the like in the prior art. The jig comprises a jig body, a pressing and fixing mechanism and a clamping and fixing mechanism. The top side of the tool body is provided with a test groove used for placing a PCBA. The hold-down fixing mechanism effectively absorbs vibration and impact through the combined design of an electric push rod and a hold-down air cushion in combination with a spring and a shock absorber, and it is ensured that the PCBA is kept stable in the testing process; according to the clamping and fixing mechanism, a bidirectional threaded rod is matched with a servo motor, accurate movement of a clamping rod is achieved, PCBs of different sizes and shapes are rapidly adapted, and the positioning accuracy and adaptability are improved. By optimizing the clamping and positioning structure and the damping design, the performance of the PCBA test fixture is remarkably improved, and the PCBA test fixture has the advantages of high-precision positioning, high adaptability, stable clamping, PCB protection, convenience in operation and the like.

This utility model relates to the field of carbon brush holder technology and discloses a carbon brush holder spring force testing device, including a worktable. A bracket and a pressure sensor are fixedly connected to the surface of the worktable. A cylinder is fixedly connected to the top of the bracket. The output end of the cylinder passes through and is slidably connected to the bottom surface of the bracket. A support plate is fixedly connected to the output end of the cylinder. A mounting groove is formed on the bottom surface of the support plate. The carbon brush holder body is arranged inside the mounting groove. The carbon brush holder body includes a metal sheet, a detection spring, and a carbon brush head. A guide assembly is provided on the bottom surface of the support plate. This carbon brush holder spring force testing device uses the insertion of the insert plate in the positioning assembly and the C-shaped groove of the metal sheet for positioning, which avoids lateral displacement of the carbon brush holder during testing. The clamping plate in the guide assembly clamps and fixes the carbon brush head, which can prevent the carbon brush head from tilting under force, thus improving the accuracy and reliability of the spring force test data.

The utility model relates to a wafer positioning device and a positioning edge searching system. The wafer positioning device comprises a jacking mechanism and a rotating mechanism, the rotating mechanism comprises a rotating disc and an adjusting motor; the adjusting motor is arranged below the turntable and is used for driving the turntable to rotate; the jacking mechanism comprises a driving assembly, a jacking platform and a first adsorption device. The driving assembly is used for driving the jacking platform to ascend and descend. The jacking platform is arranged around the periphery of the turntable; the first adsorption device comprises a plurality of suction cup assemblies evenly distributed on the jacking platform. According to the jacking platform, the lower surface of the wafer is adsorbed through the first adsorption device, positioning of the wafer with the warping problem is facilitated, the stability of the wafer in the moving process is ensured, waggling or displacement of the wafer is avoided, and the adaptability of the positioning device to wafers of different sizes and shapes is improved.

A test device of a plunger pump comprises an adapter, a liquid outlet pipeline, a liquid return pipeline, a direction control valve, a data collector, a hydraulic pressure regulator and a controller. The adapter is sealingly connected to a liquid inlet end of the plunger pump. One end of the liquid outlet pipeline is connected to the adapter, and the other end of the liquid outlet pipeline extends into an external test liquid. One end of the liquid return pipeline is connected to the adapter, and the other end of the liquid return pipeline extends into the external test liquid. The direction control valve is arranged at the connection between the liquid return pipeline and the adapter. The data collector is arranged in the liquid outlet pipeline to collect the hydraulic pressure value in the liquid outlet pipeline. The hydraulic pressure regulator is arranged in the liquid outlet pipeline to regulate the hydraulic pressure value in the liquid outlet pipeline. The controller is electrically connected to the plunger pump to control the liquid inlet and the liquid return of the plunger pump, and is electrically connected to the hydraulic pressure regulator and the data collector to receive a preset test hydraulic pressure value input by a user to control the hydraulic pressure regulator to regulate the hydraulic pressure value in the liquid outlet pipeline to the preset test hydraulic pressure value. The application realizes automatic testing of the plunger pump under different hydraulic pressures, and improves the testing efficiency.

The utility model relates to the technical field of adhesive performance test, especially relates to a steel plate surface adhesive flowability testing device. The device includes base platform, hinge, electric push rod, steel plate, temperature control platform, glue dispensing mould and high speed camera, the hinge fixed end is connected with base platform, and the movable end is connected with the steel plate edge, the both ends of electric push rod are rotatably connected with base platform and the side of steel plate far from hinge through pin shaft, temperature control platform is fixedly connected with the bottom of steel plate, glue dispensing mould is placed on the top of steel plate, and high speed camera is arranged in the front of the operation side of steel plate. The device can accurately adjust and stabilize the inclination angle of steel plate through electric push rod and hinge, the temperature of steel plate is regulated by temperature control platform to restore real working condition, glue dispensing mould ensures the uniformity of initial adhesive strip specification, and high speed camera dynamically captures the flow process. It can improve the testing accuracy and reliability, adapt to the testing demand of multiple scenes, and provide support for adhesive performance evaluation.

The invention provides an airfoil flow field sensor optimization arrangement method and system, and the method comprises the steps: obtaining the surface flow field parameter data of an airfoil under different working conditions, and constructing a data matrix; complementing the data matrix by using the matrix complementing model; and searching and optimizing the arrangement position of the sensor by taking the completion error of the matrix completion model as an optimization target to obtain an optimal sensor arrangement scheme. The method further comprises the steps that the reconstructed complete pressure distribution is compared with actual measurement data or historical simulation data of the partial redundant sensors, and if errors exceed a preset threshold value, re-optimization of the optimal sensor arrangement scheme is triggered. According to the method, the data detected by the sensor is recovered and extracted by using the matrix completion algorithm, so as to obtain information as much as possible; the genetic algorithm is used for optimizing the configuration position of the sensor so as to maximize the information carried by the sensor detection data; the problems of sensor efficient configuration and data reconstruction in flow field detection are solved.

The utility model provides a kind of cylindrical battery clamp device, including support assembly, test fixture assembly, the support assembly is equipped with several layers test fixture assembly, the support assembly includes support, bottom plate, support plate, fixture mounting plate, the utility model has the beneficial effect that after fixing the height of cylindrical battery, two test ends move and respectively and the both ends of cylindrical battery abut, the distance between two test ends matches the length of cylindrical battery, the movement of cylindrical battery along its length direction is limited by two test ends, on the basis of guaranteeing the reliability of cylindrical battery test fixture to cylindrical battery clamping, the applicability of cylindrical battery test fixture to different size, different specification cylindrical battery is improved, it is simple and stable and clamping convenient and reliable, test error is small and cylindrical battery contact can be conveniently adjusted, and the structure is simple, ingenious, and low in manufacturing cost.

The utility model relates to the technical field of automation equipment, and discloses automation equipment for chip testing, which is characterized in that an alignment floating assembly is additionally arranged to enable an alignment pin column to move relative to an alignment hole in the horizontal direction, so that the alignment pin column can be accurately inserted into the alignment hole, and the chip testing efficiency is improved. Therefore, the probe module can be accurately contacted with the chip on the test carrier plate. The design effectively solves the problem of inaccurate contact between the probe module and the chip in the existing chip test equipment, and significantly improves the precision and reliability of chip test. Meanwhile, the introduction of the alignment floating assembly also enhances the adaptability of the device to chips of different sizes, reduces the test error and chip damage risk caused by inaccurate alignment, and further improves the test efficiency and the stability of the device.

The application discloses a hub assembly high-compatibility automatic assembly production line and a method thereof. The production line comprises bearing part press-fitting devices for press-fitting a plurality of bearing outer rings in a hub in a spatial position sequence, bolt press-fitting devices for press-fitting a plurality of bolts on an outer wall of the hub, brake member assembly stations for assembling brake members and the hub, dynamic balance testing devices for elastically inserting and driving the bearing outer rings in the hub to rotate coaxially and measuring weight distribution of the hub, gear ring and oil seal press-fitting devices for press-fitting the gear ring and the oil seal synchronously, run-out testing devices for inserting and positioning the bearing outer rings in the hub, rotating against an outer wall of the driving brake member and measuring surface flatness of the brake member and assembly height of the gear ring, and a plurality of mechanical arms for reciprocating transfer between the devices. The application realizes high compatibility of the whole production line.

The utility model relates to the technical field of optical fiber macro-bending testing, and discloses a novel optical fiber macro-bending testing device which comprises a supporting plate, a sliding plate block and a fixed plate block, the U-shaped wheel is rotationally connected to the upper surfaces of the sliding plate block and the fixed plate block; and the fixed clamp assembly is arranged on the upper surfaces of the sliding plate and the fixed plate, and the surface of the fixed plate is connected with a limiting sliding block. According to the novel optical fiber macrobend testing device, one end of a tested optical fiber is fixed on the right side fixing clamp assembly, the remaining part of the optical fiber is wound around the U-shaped wheel close to the fixing clamp assembly, then the optical fiber is pulled to the U-shaped wheel at the topmost end in the middle to be wound around, and the optical fiber is pulled to the U-shaped wheel close to the left side fixing clamp assembly all the time; finally, the optical fiber penetrates through the fixing clamp assemblies to be fixed, the sliding plate block is pushed, the remaining optical fiber is slightly loosened along with pushing of the sliding plate block to be attached to the limiting sliding block, and the optical fiber is fixed to the fixing clamp assembly on the left side.

The utility model discloses a closed cooling tower coil performance detection device belongs to the cooling tower performance detection technical field. Including abutting main body mechanism and leading mechanism, the main body mechanism includes from top to bottom setting water distribution unit, coil containing detection unit, filler containing unit and water collecting tank, and the water supply line is connected with water distribution unit. The utility model has the advantages of can carry out the coil performance test in the laboratory, avoids the influence of outside temperature and humidity to test result, reduces test error.

The application discloses a weighing device for porosity test, which comprises an electronic scale, a container, and a lifting mechanism. The electronic scale comprises a scale body and a weighing disc for placing a measured object. The weighing disc is connected with a weighing sensor. The weighing disc is in communication connection with the scale body to transmit the weighing data of the weighing sensor to the scale body. The container is located below the weighing disc and contains a liquid. The weighing disc is arranged on the lifting mechanism. The lifting mechanism can drive the weighing disc to lift or lower, so that the weighing disc and the measured object can be completely immersed in the liquid in the container or can be lifted and separated from the liquid in the container. The weighing disc weighs the measured object before, during and after soaking, respectively. The weighing device for porosity test can complete the weighing of the dry weight, saturated floating weight and saturated empty weight of the measured object. The measured object can complete the test task without multiple transfer operations, and human interference and test errors are reduced.

The present application belongs to the technical field of nondestructive testing of building materials, and particularly relates to a rebound nondestructive testing method and system for the compressive strength of rapidly hardened cement-based materials. The technical solution is as follows: sample data of rapidly hardened cement-based materials is collected to construct a sample data set; the sample data set is subjected to outlier rejection, normalization processing and feature weight mapping to form a multi-dimensional input feature vector; based on the multi-dimensional input feature vector, a compressive strength prediction model is constructed, and the model parameters are optimized through k-fold cross-validation; the rebound value, curing age and mix proportion parameters of the rapidly hardened cement-based material to be tested are input into the trained compressive strength prediction model to output the corresponding compressive strength detection value. The present application can comprehensively consider sample data, establish a nonlinear mapping relationship between multi-dimensional features and compressive strength, thereby realizing rapid, continuous and high-precision evaluation of the compressive strength of rapidly hardened cement-based materials without damaging the materials or structure.

This utility model relates to the field of new energy vehicle battery testing technology, and discloses a new energy vehicle battery testing device, including an operating platform, two conveyor belts, a rotating rod, and a pressure plate. The two conveyor belts are respectively located at both ends of the top of the operating platform. A support platform is fixedly connected to the top of the operating platform, and an L-shaped plate is also fixedly connected to the top of the operating platform. The rotating rod is rotatably connected inside the L-shaped plate, and a continuous conveyor plate that cooperates with the support platform is fixedly connected to its bottom. Both sides of the continuous conveyor plate have conveyor grooves, each of which cooperates with a corresponding conveyor belt. The beneficial effects of this utility model are that it ensures continuous and complete test data, significantly improves the accuracy and reliability of test results, and the continuous testing process can comprehensively evaluate the battery's performance and health status, reduce test errors, and promptly identify and eliminate potential safety hazards in the battery. This is of great significance for improving test quality, ensuring battery safety, and promoting the progress of the new energy vehicle industry.

The utility model discloses a secondary ion mass spectrum sample holder which comprises bases and a back plate, the back plate is located in the base, the back plate and the base are detachably connected through bolts on the side face of the base, the upper surface of the base is fixedly connected with a panel, the back plate is provided with a spring, and the spring is fixedly connected with the panel. And the spring is used for jacking up a sample and fixing the sample on the bottom surface of the panel. The sample loading device is suitable for loading small-size secondary ion mass spectrometry samples, the size of the samples does not need to be enlarged through bonding, test errors caused by the bonding process are reduced, the pretreatment and loading time of the samples is saved, and equipment pollution caused by organic glue in the bonding process is prevented.

The utility model discloses a rotating device of a collecting pipe of an air filter test board for general ventilation, which comprises a test section pipeline, a sampling head is arranged in the test section pipeline, a mounting hole is formed in the test section pipeline, a shaft sleeve is mounted in the mounting hole, a supporting block is mounted below the test section pipeline, and a rotating shaft is mounted in the shaft sleeve. A base is installed at the bottom of the shaft sleeve, one end of the sampling head is installed in the base, a connecting pipe is installed at the bottom of the base, a rotating assembly is installed on one side of the supporting block, and the rotating assembly is connected with the shaft sleeve. In the prior art, the collection head and the particle counter are polluted to a certain degree, so that the accuracy of the result of subsequently testing the filtering efficiency of other products is reduced, while the collection head is covered by a cover in the existing method, but the mode lacks certain continuity, and the accuracy of the result is reduced. And the accuracy is easily reduced due to the fact that the air tightness in the whole equipment is influenced by opening a test section pipeline.

The application provides a wear resistance detection device for a fire hose, which detects a hose body and comprises a workbench, symmetrical butt joints are arranged at both ends of the top of the workbench, a slide rail is arranged on the top of the workbench, a support is slidably connected to the slide rail, the support is connected to the bottom of the butt joint, an inner ring is pivotally connected to the inner end of the butt joint, a flange is arranged on the inner side of the inner ring, the flange extends into the port of the hose body, and an outer hoop is arranged on the port of the hose body. The workbench, butt joint, outer hoop, polisher, ball screw and soft bone support are arranged, the hose body is supported by the soft bone support, the outer wall of the hose sample is kept in a uniform tension state during friction, the friction consistency is improved, the test error is reduced, the polisher is internally provided with floor stones, metal blocks and stone particle balls, different scene tests are increased, the wear degree of different objects on the fire hose is simulated and detected, various tests are formed, the friction mode is avoided from being too single, and the test effect is improved.

This utility model relates to the field of PCB board testing technology and discloses a PCB board that can replace the bed-of-pipe wiring of test fixtures. It includes: a PCB support base plate, a PCB encapsulation cover plate, and a PCB board body. The PCB encapsulation cover plate is fixedly connected to the top surface of the PCB support base plate, and the PCB board body is slidably connected to the inner side of the PCB encapsulation cover plate. A buffer guide assembly is disposed between the PCB support base plate and the PCB board body. A pin connection adjustment assembly is disposed on the side of the PCB board body. This utility model improves stability and reliability through buffer guidance, enhances flexibility and shortens test preparation time through pin adjustment, reduces maintenance and customization costs and test errors by replacing traditional probes with a PCB board, and also reduces contact pressure to protect the circuit board under test. It solves the problems of complex process, high cost, poor flexibility and adaptability, and easy damage to test points associated with traditional bed-of-pipe wiring.

The invention relates to the field of catalyst performance evaluation, in particular to a performance evaluation device and method for a carbon-based ozone decomposition catalyst. The device comprises an air generator, a first mass flow meter, an ozone generator, a first switch control valve, a measuring pipe, a second switch control valve and an ozone analyzer which are sequentially connected together through a pipeline, a second mass flow meter is connected in parallel to the pipeline between the air generator and the first mass flow meter and the pipeline between the ozone generator and the first switch control valve through a pipeline; a third switch control valve is connected in parallel on a pipeline between the second mass flow meter and the first switch control valve and a pipeline between the second switch control valve and the ozone analyzer through a pipeline; the device is used for evaluating the performance of the catalyst, the conversion rate and the failure rate are used as key indexes for evaluating the performance of the ozonolysis catalyst, the inlet and outlet concentrations of ozone can be detected in real time, the sample testing error is small, and the rapid evaluation of the performance of the ozonolysis catalyst can be realized.

A viscosity testing device for an environment-friendly industrial cleaning agent comprises a supporting frame, the supporting frame comprises a vertical plate arranged on one side of a bottom plate, a top plate parallel to the bottom plate is fixed to the top end of the vertical plate, a control panel is installed on the end face of the vertical plate, a detection barrel is fixedly arranged on the bottom plate, and a first sensor is arranged at the top of the inner wall of the detection barrel; the upper end face of the detection barrel is connected with a containing barrel through a connecting pipe, a second sensor is arranged at the top of the inner wall of the containing barrel, an electromagnetic valve is arranged at the bottom of the containing barrel, and a stirring device is further arranged in the containing barrel, coincides with the axis of the containing barrel and is fixedly connected with a motor driving shaft at the top of the supporting frame.

This utility model discloses a high-voltage testing device for surge arresters. The device includes a testing instrument, an adsorption conductive module, and an insulating rod. The adsorption conductive module is detachably mounted on the top of the insulating rod, and the end of the monitoring harness furthest from the testing instrument is detachably connected to the adsorption conductive module. In this embodiment, the adsorption conductive module can be moved to the device under test and adsorbed via the insulating rod, enabling remote operation, ensuring operator safety, eliminating the need for an aerial work platform, saving costs and time, and improving efficiency. The detachable nature of the adsorption conductive module and the insulating rod facilitates storage and transport. The detachable nature of the monitoring harness and the adsorption conductive module facilitates harness replacement and maintenance. The overall structure can stably establish an electrical connection between the adsorption conductive module and the device under test, ensuring smooth testing.

The invention discloses a door and window manufacturing quality detection method based on artificial intelligence, and relates to the technical field of door and window quality detection, and the method comprises the following steps: S1, appearance detection; s2, door and window locking; s3, sound insulation detection; and S4, subsequent processing: the user takes out the detected doors and windows from the sound insulation quality detection equipment, and the user terminal performs data processing to obtain final detection information summary. The appearance and sound insulation performance of doors and windows can be detected, an automatic and mechanical locking mode is achieved when the doors and the windows are locked, and the doors and the windows of various specifications can be locked on the four side faces and locked in the thickness direction under linkage cooperation, so that the stability of the doors and the windows can be guaranteed, and the safety of the doors and the windows is improved. And the locking clearance can be reduced, so that the detection error is reduced, the two surfaces of the door and window can be detected, and the effect of reducing the error is achieved.

This utility model discloses a display screen sealing performance testing device, belonging to the technical field of sealing performance testing devices. It includes a device body with a built-in air pump, a test chamber in the middle of the device body, an electric push rod, a positioning component, and an auxiliary sealing component installed at the bottom of the test chamber, a test air nozzle installed at the top output end of the electric push rod, and an air guide tube fixedly connected between the test air nozzle and the air pump. The positioning component fixes the back of the display screen, and the auxiliary sealing component seals the interface on the back of the display screen. During testing, the back of the display screen faces downwards, and the front is not subjected to downward pressure. The positioning suction cup acts on the back of the display screen, preventing changes in sealing performance due to fixation, thus greatly reducing testing errors. Positive pressure and negative pressure tests are performed separately. The positive pressure test effectively avoids testing errors caused by the frame and polarizer being tightly adhered during the negative pressure test.

The utility model discloses a tension testing device for a cable. The tension testing device comprises a test board; the stretching unit is arranged in the test bench, the stretching unit is used for stretching the two ends of the cable, the stretching unit is provided with a fixing assembly, and the fixing assembly is used for fixing the two ends of the cable; and the hoisting unit is arranged in the test bench, and the hoisting unit is used for hoisting the center of the cable. According to the utility model, the stretching unit is matched with the fixing assembly, so that the two ends of the cable are accurately and stably fixed, the tension is applied, the tension is uniformly and adjustably applied, the accuracy of test data is ensured, and the hoisting unit simulates a suspension stress scene in actual use of the cable and moves synchronously with the stretching unit; the multi-directional stress test of the cable is realized, the performance of the cable is reflected more truly, meanwhile, the guide assembly provides stable guidance for the hoisting unit, the hoisting process is ensured to be stable, and test errors are reduced.

The utility model provides a kind of antenna adjusting platform, comprising: base;Adjusting device, including the adjusting part of liftable setting, adjusting part is set on base and is located below base, to be used for adjusting the height of base;Main body, rotatably set on base;Disc, movably set on main body, disc surface of disc is used to carry antenna;Pitch adjustment mechanism, pitch adjustment mechanism is connected with disc, to adjust the pitch angle of disc;Translation mechanism, translation mechanism is set on base and is located below base, to be used for adjusting the position of base;Wherein, adjusting device is multiple, multiple adjusting device is spaced along the length direction and / or width direction of base.Setting.

The invention discloses an MEMS probe card space converter based on multilayer silicon wafer stacking and film rewiring and a preparation method thereof. The MEMS probe card space converter comprises a plurality of stacked and connected high-resistance silicon wafers, surface function layers on the upper side and the lower side and a plurality of middle conduction layers. Each high-resistance silicon wafer is provided with a plurality of through holes, and the adjacent high-resistance silicon wafers are electrically communicated through solder balls or columnar bumps; the surface of the surface functional layer is coated with a photosensitive polyimide layer, a multi-layer RDL structure is constructed on the outer side of the photosensitive polyimide layer, and a Cu / Ni / Au metal coating is arranged on the outermost layer of the RDL structure. Multi-layer silicon wafer stacking and the RDL technology are adopted, the wiring precision far higher than that of a traditional LTCC is achieved, the RDL technology can achieve line width and line distance smaller than or equal to 5 micrometers, the line width and line distance are reduced by more than 10 times compared with the LTCC, testing of advanced DRAM, HBM and other chips with pitches of 60 micrometers and below can be stably supported, and the high-density interconnection requirement is met.