74 results about "Structural testing" patented technology

The invention discloses a torsional shear mechanical property testing device and method for a hollow cylinder structure, and belongs to the technical field of mechanical structure testing. The device comprises an axial driving mechanism, a radial driving mechanism and a fixed supporting mechanism. The axial driving mechanism is connected with the axial actuating pressure plate through an actuating main shaft; the radial driving mechanism comprises a radial driving mandrel of an inverted conical structure and a driving sliding plate matched with the radial driving mandrel, and axial movement of the main shaft is converted into radial expansion movement through conical face fit. The fixed supporting mechanism is a closed supporting system composed of an outer sleeve, an upper cover plate and a base. Through the unique inverted conical structure design, independent or synchronous application of axial compression, radial expansion and torsional shear loads can be achieved, and the complex stress working condition is effectively simulated. The device has the advantages of being stable in structure, high in testing precision, easy and convenient to operate and the like, meanwhile, equipment universality and maintenance convenience are remarkably improved through the replaceable design of the driving sliding plate, and the device is suitable for mechanical property testing of various hollow cylindrical structural parts.

The invention discloses an intelligent design system and method for a building structure. The method comprises the following steps: S1, constructing a building database and a rule database; s2, inputting a construction area and a construction target; s3, generating multiple groups of building designs; s4, generating a simulated building structure, and performing a simulated building structure test; s5, submitting an architectural design result passing the test to an expert group appraisal platform, and scoring by an expert group according to an assessment condition; and S6, outputting a final building design result. Model simulation and testing are carried out after the building scheme is generated according to the construction target, unqualified building design schemes can be filtered and processed through the testing step, the follow-up expert review data volume is reduced, scoring is carried out after expert review, and the efficiency is improved. And some basic qualified design schemes can be optimized according to suggestions of expert appraisal, so that the finally obtained design schemes can be enabled to be richer, and the efficiency of generating the construction design schemes of the scheme is further ensured.

The present application relates to the field of connector testing, in particular to a connector-based locking structure testing method and system, comprising the following steps: building a multi-physical field coupling test environment to output a composite environmental stress; based on the actual application scenario of the to-be-tested locking structure, obtaining assembly deviation data, and obtaining an assembly deviation state through a preset multi-degree-of-freedom adjustable clamp; based on the physical data of the to-be-tested locking structure, constructing a three-dimensional model of the locking structure, giving real material mechanics parameters, inputting the composite environmental stress and the assembly deviation data into a finite element software for simulation testing, and outputting a simulation test data set; performing physical testing through the multi-physical field coupling test environment, and outputting a physical test data set; comparing and analyzing the simulation test data set and the physical test data set, and outputting a test report. The present application builds a multi-physical field coupling test environment, and combines a multi-degree-of-freedom adjustable clamp to make the test scenario closer to the real application working condition of the connector.

The invention relates to the technical field of structure testing, in particular to an overhead rigid suspension expansion joint fatigue test device and method, and the device comprises a fatigue host module which provides reciprocating vertical vibration power for an expansion joint; the comprehensive platform module is used for providing reciprocating horizontal vibration power for the fatigue host module; the control system module comprises a strain data processing unit which is used for constructing a three-dimensional strain field model and calculating stress distribution based on the strain data; the phase compensation generation unit dynamically generates lag compensation time of the horizontal vibration relative to the vertical vibration; and the driving control unit is used for adjusting the phase of the horizontal vibration in real time based on the lag compensation time, so that the horizontal vibration reaches the maximum displacement value at the vertical vibration peak moment. According to the invention, the authenticity, accuracy and reliability of the fatigue test of the expansion joint can be effectively improved, the phase and displacement synchronization of horizontal vibration and vertical vibration can be dynamically adjusted through a linkage control mechanism, and the spatial multidirectional composite fatigue load in actual operation can be reproduced.

This invention belongs to the field of textile material testing, and relates to a moisture absorption testing device, specifically a moisture absorption testing device, its testing method, and its application. It includes a lifting platform, on which a testing device and a columnar material fixing tube are mounted. The testing device includes a testing plate and a core structure located at the center of the testing plate. The core structure is situated below the columnar material fixing tube and connected to a liquid reservoir via a liquid guide tube. The liquid reservoir is located above an electronic balance; the electronic balance is connected to a data acquisition unit. The dynamic moisture absorption process of the columnar material is recorded and characterized through the testing plate with its upper and lower perforations. This enables performance testing and characterization of upright columnar materials.

The application discloses a kind of arch structure system multipoint intelligent loading devices, relate to arch structure load test technical field, it includes two parallelly arranged arch structures, the lower portion of the arch structure is provided with loading assembly, the loading assembly includes motor, the output end of the motor is fixedly connected with carousel, and motor is used to drive carousel reciprocating rotation, and the circumferential direction of the carousel is fixedly connected with electric telescopic rod.By setting two parallel arch structures, and using electric telescopic rod to drive beam and roller to reciprocating rolling pressure on the top of arch structure, load test is carried out to two arch structures simultaneously, compared with prior art, only single arch structure test can be carried out once, can more truly simulate the situation that multiple arch structures in tunnel are stressed simultaneously, effectively solve the data deviation problem caused by single-point test, so as to more accurately screen out unqualified arch structure, improve the safety and stability of tunnel arch structure system.

This invention belongs to the field of structural axial force measurement systems, and discloses an adaptive pure axial force measurement system and method for high-temperature structural testing. By adaptively rotating the connecting threaded rod, this invention allows the direction of the force transmitted from the test piece to the spoke-type tension / compression sensor to be adjusted according to the deformation state of the test piece. This reduces the influence of additional bending moments, eccentric loads, and non-axial components on the measurement results, thereby improving the stability and accuracy of axial force measurement in high-temperature structural testing. This invention uses a spoke-type tension / compression sensor as the force measuring element. When the test piece undergoes axial tension, a tensile force is applied to the spoke-type tension / compression sensor; when the test piece undergoes axial compression, a compressive force is applied to the spoke-type tension / compression sensor. Therefore, it can meet the measurement needs of both tensile and compressive conditions in high-temperature structural testing.

This invention relates to a scaled-down rotating cable anchoring loading device and testing method, belonging to the field of civil engineering structural testing and measurement. It addresses problems such as eccentric loading, impure force distribution, unstable load, and poor spatial adaptation in traditional scaled-down models. The device comprises a box, a pulley guiding mechanism, a steel beam, and a top loading device. The box is secured to the scaled-down anchors using clamps or backfill. The pulley guiding mechanism consists of guide rails, a sliding table, vertical pulleys, and two sets of horizontal traction pulleys, allowing for three-dimensional adjustment to ensure the horizontal guidance of the cable. The top loading device employs a jack structure, using a lifting piston rod to vertically raise and lower the loading arm synchronously, applying horizontal tension and possessing a self-locking pressure-holding function, enabling long-term stable load holding. The testing method involves device installation, anchor and cable placement, pulley leveling, pre-loading, self-locking pressure holding, and data acquisition to complete the test. This invention achieves pure horizontal, high-precision, stable, and controllable loading. It features a compact structure, simple operation, and accurate acquisition of mechanical parameters, making it suitable for cable anchored scaled-down model testing.

The invention discloses a method and a device for quickly replacing an electronic paper (EPD) product inspection program, relates to the technical field of EPD product inspection, and aims at carrying out structure / scheme optimization on a conventional integrated test fixture and adopting a detachable independent test module design. Rapid replacement of inspection programs is achieved through the steps of program pre-burning, module rapid assembly, equipment debugging and product inspection, different programs can be pre-stored in a plurality of test modules, inspection of products of multiple models is adapted, an inspection jig main body and a plurality of independent test unit groups are taken as the main body, and the jig main body is provided with a signal butt joint, power supply and control structure. The test module is provided with a program storage structure, a product connection structure and an auxiliary detection butt joint structure, the module is detachably connected with the jig body, a fool-proof positioning structure is arranged, program burning does not need to be waited on site, a single module can be independently maintained and replaced, the detection efficiency and the jig utilization rate are greatly improved, and the production cost is reduced. The method is suitable for batch inspection of various electronic paper EPD products.

The utility model relates to PCB board test technical field, concretely relates to a kind of PCB board function test device, including bottom plate, still including test mechanism, test mechanism is located above bottom plate, test mechanism includes feeding structure, test structure, feeding structure includes the carousel rotation setting in bottom plate upper end, three moving grooves are set in carousel, moving groove inside is equipped with top plate, circuit board is placed in top plate upper side, and top plate is equipped with the clamping structure for clamping fixed circuit board in the side away from carousel center. Advantageous effect: through clamping structure clamping fixed circuit board, then using test structure to test the function of circuit board, after testing, drive carousel clockwise rotation, make circuit board rotate to carousel's unloading position, and then drive top plate to move upwards and lift circuit board upwards, make circuit board upper end higher than moving groove top end, and then facilitate to take circuit board, avoid to cause damage to circuit board, reduce the time of taking, improve the efficiency of test.

A non-structural test simulation frame disclosed by the present invention comprises a plurality of floor frames, each floor frame comprises a peripheral frame, a plurality of stiffening beams are fixedly connected in the peripheral frame, the peripheral frames and the stiffening beams are I-shaped steel beams, a plurality of square steel pipe columns are arranged between the upper and lower adjacent peripheral frames, and the square steel pipe columns and the peripheral frames are connected through bidirectional hinge supports. An elastic-plastic support is hinged between every two adjacent square steel pipe columns in each layer, reinforced concrete floors are fixedly connected to the top surfaces or the bottom surfaces of the peripheral frame and the reinforcing beams, a plurality of circular holes are formed in the reinforced concrete floors, and pipelines, floor frames and the reinforced concrete floors are arranged in the circular holes in a penetrating mode and used for simulating floors of a multi-story building; the elastic-plastic support comprises a belleville spring sleeve, and the two ends of the belleville spring sleeve are fixedly connected with a friction damper and a connecting square steel pipe respectively. The device can be used for simulating interaction of various non-structural systems and can also be used for testing non-structural members across floors.

The invention relates to the technical field of nuclear island structure testing, and provides a nuclear island structure contact surface mechanical property detection device and method. Comprising a vibration table, a second plant model arranged on the table top of the vibration table in a pouring mode, a first plant model arranged on the second plant model in a pouring mode and a sensor unit arranged on the first plant model and / or the second plant model, and the sensor unit is at least used for obtaining mechanical parameters. By pouring the first plant model on the second plant model, the device can truly reproduce the contact relation of pouring first and pouring later and the interface forms of concrete-concrete and concrete-steel plates, and the vibration table is used for applying earthquake dynamic load and can be integrated with a weighting device, a temperature control system and the like to realize a static load-temperature-dynamic coupling test.

The application is based on a cement-based material original state pore measurement method based on low-field magnetic resonance longitudinal relaxation technology, which overcomes the technical bottlenecks of traditional magnetic resonance test methods in signal acquisition integrity, rapid relaxation signal capture and longitudinal surface relaxation strength determination by optimizing the acquisition and processing technology of longitudinal relaxation signals, and realizes the accurate detection of the pore structure of cement-based materials from the nanometer scale to the micron scale. Compared with the traditional transverse relaxation method, the method of the application is not disturbed by paramagnetic substances when testing ferrosilicate cement-based materials, and has higher applicability and accuracy. Overall, the application can non-destructively, accurately and accurately characterize the pore distribution characteristics of cement-based materials without drying pretreatment of the sample, providing a scientific basis for optimizing the performance of cement-based materials and improving the level of engineering quality control, and effectively promoting the further development of pore structure test technology in the fields of building engineering and material science.

The invention provides a test structure. The test structure includes at least one test device. The test device comprises a substrate, an isolation structure and a plurality of word lines. The isolation structure is in the substrate. The isolation structure defines a plurality of active regions in the substrate. The plurality of word lines comprise a plurality of first word lines and a plurality of second word lines which are alternately arranged. The plurality of first word lines are located in the plurality of active regions. The plurality of second word lines are not located in the plurality of active regions and are located on the isolation structure. The plurality of first word lines and the plurality of second word lines are insulated from the substrate. The test structure can accurately measure the resistance of the word line on the active region and the resistance of the word line on the isolation structure.

This invention provides a small pressure sensor accuracy testing fixture, comprising a PCB test board and a sealing and fixing structure. One end of the PCB test board has multiple sensor slots arranged in a row, into which the pressure sensor to be tested is inserted. The other end of the PCB test board has a data interface, which is electrically connected to a host computer processor. The end of the PCB test board with the sensor slots is fixed and sealed by the sealing and fixing structure, while the other end with the data interface is located outside the sealing and fixing structure. The sealing and fixing structure has a vent hole, which is connected to a pressurizing device via a flexible vent to apply pressure to the pressure sensor to be tested within the sealing and fixing structure. This small pressure sensor accuracy testing fixture can be connected to a host computer processor to achieve automated test result interpretation and can simultaneously perform accuracy tests on multiple pressure sensors.

The application discloses a kind of electrochemical potential step transient test method and system for high temperature and high pressure diffusion control.The system includes high temperature and high pressure reactor, integrated three-electrode test unit, multistage sealing assembly, safety control subsystem and data acquisition unit;Multistage sealing assembly adopts conical surface sealing-high temperature ceramic insulation-back end hydraulic compensation composite design, to ensure the sealing and insulation reliability under high temperature and high pressure;Integrated three-electrode test unit is modular probe structure.When testing, inject corrosion solution into the kettle and heat up to target working condition, apply potential step signal to excite diffusion-controlled transient current response, and analyze test curve based on Cottrell equation and porous medium diffusion model.The application can in situ quantitatively obtain diffusion coefficient, porosity and effective thickness and other key parameters under the condition of 120-250 DEG C, 2.7-350 bar, to provide data support for metal component corrosion risk assessment.

The invention relates to the technical field of semiconductor processing. The invention provides a test structure. The test structure comprises a test module; the test module comprises a test structure layer and a chip simulation layer; the test structure layer is an interdigital metal structure layer and comprises a pair of parallel metal bus bars, and the metal bus bars are provided with test metal wires which extend towards the bus bars on the opposite sides and are arranged in a staggered mode; the chip simulation layer is a parallel line metal layer and comprises at least one strip-shaped metal layer; the strip-shaped metal layer is perpendicular to the test metal wire; the strip-shaped metal layer is provided with a set processing position and is suitable for forming conductive through holes in the set processing position and the spacing layer below the set processing position in a Damascus process; the first strip-shaped metal layer and the second strip-shaped metal layer in the strip-shaped metal layers are suitable for being connected with test metal wires connected with different metal bus bars through the conductive through holes respectively. According to the invention, whether the conductive through hole causes bridging can be verified.

This invention relates to the field of tunnel lining structure testing, specifically disclosing an indoor testing device and method for prestressing loading of prestressed lining in ultra-flat tunnels. The device includes a test chamber that can be filled with soil; a simulated prestressed lining for ultra-flat tunnels, with a steel wire mesh pre-embedded inside, and the simulated lining is detachably installed inside the test chamber; a simulated ordinary tunnel lining, also detachably installed inside the test chamber; an adjustable prestressing force application component installed on the simulated prestressed lining; and several strain gauges attached to both the simulated prestressed lining and the simulated ordinary tunnel lining. This method can clearly compare the performance of the simulated prestressed lining and the simulated ordinary tunnel lining under ultimate load using strain gauges, thereby providing a clearer understanding of the advantages and disadvantages of the simulated prestressed lining for ultra-flat tunnels.

This utility model discloses a precise testing device for the compressive strength of packaging boxes, relating to the field of testing technology. The device includes a testing base plate, a support frame fixedly connected to the top of the base plate, a pressure sensor mounted on the top of the base plate, and a testing limiting structure located on the base plate. The limiting structure includes a mounting frame, a lifting plate, a drive motor, and a threaded rod. The mounting frame is fixedly connected to one side of the base plate, and a sliding groove is formed on the side of the mounting frame closest to the base plate. The drive motor is fixedly mounted on the top of the mounting frame. Through the cooperation of the mounting frame, the lifting plate, and the limiting plate, the consistency of the compression height can be ensured. Regardless of the height of the packaging box being tested, it can be conducted under the same testing conditions. This provides good lateral comparability for multiple sets of test data, enabling a more scientific and objective assessment of the packaging box quality.

This invention provides a data acquisition and processing method and system for axial and eccentric static load tests on ECC-strengthened concrete columns, belonging to the field of structural testing and data acquisition and processing technology. This method simultaneously acquires sensor data and image data, first identifying cracks and then performing data preprocessing. Furthermore, by using the crack information set and the installation position of each preset sensor, it dynamically generates axial and eccentric compression correction parameters, achieving refined correction of the initial stress information. This method effectively solves the shortcomings of traditional methods, such as the accidental deletion of key damage data and the lack of quantification of the impact of multiple microcracks, significantly improving the accuracy of test data and providing reliable support for the mechanical performance evaluation of ECC-strengthened concrete columns.

This invention relates to the field of building material structural testing technology, specifically a system and method for testing the impact resistance performance of railings and handrails. The system includes: launching a standard test impactor at a preset impact point using a controllable electromagnetic launcher; acquiring a sequence of transient deformation images from multiple perspectives using a high-speed camera; extracting the spatial coordinates of structural feature points through image enhancement and feature point calibration; and calculating the dynamic displacement field and dynamic strain field. An elastoplastic dynamics inversion algorithm is used to calculate the stress distribution time history and local plastic deformation within the impact contact area, identifying stress concentration areas and determining the stress peak and stress cycle number. Combined with the degree of residual deformation, the impact resistance performance level of the railing and handrail is quantitatively assessed, achieving standardization of the testing process and quantification of the results. This method enables controllable impact process and multi-dimensional deformation acquisition, accurately obtaining the internal mechanical response parameters of the component.

The utility model relates to cloth detection device technical field. A kind of cloth colour fastness detects and uses rubbing device, including test platform, several paper positioning rollers are equipped in left end on test platform, test platform is slidably equipped with test slide, the end of test slide is equipped with test sliding block, detachable clamping frame is equipped outside test sliding block, the middle part of test platform is equipped with heightening structure, the side of test platform is equipped with driving mechanism for driving test slide transverse reciprocating sliding;The right end of test platform is equipped with extrusion structure.The utility model provides a kind of cloth colour fastness detects and uses rubbing device, which can be controlled conveniently, can realize automatic test and record, reduce manual operation, can guarantee test result accurate, can satisfy higher test demand;Solve the technical problem that the current cloth friction test is usually manually operated in the prior art, which consumes manpower and cannot guarantee the accuracy of test results each time, and cannot meet higher test requirements.

The invention relates to the field of connector testing, in particular to a locking structure testing method and system based on a connector, and the method comprises the following steps: building a multi-physics coupling testing environment, and outputting a composite environment stress; based on an actual application scene of the to-be-tested locking structure, obtaining assembly deviation data, and obtaining an assembly deviation state through a preset multi-degree-of-freedom adjustable clamp; constructing a three-dimensional model of the locking structure based on physical data of the to-be-tested locking structure, endowing the material with real mechanical parameters, inputting composite environmental stress and assembly deviation data into finite element software for simulation testing, and outputting a simulation test data set; performing a physical test through a multi-physical field coupling test environment, and outputting a physical test data set; and comparing and analyzing the simulation test data set and the physical test data set, and outputting a test report. According to the invention, a multi-physical field coupling test environment is established, and a multi-degree-of-freedom adjustable clamp is combined, so that a test scene is closer to a real application working condition of the connector.

The invention relates to the technical field of semiconductors, and provides a vacuum mechanical finger testing device, which comprises a testing plate, a box body and a gas circuit structure, and is characterized in that the testing plate is used for placing a vacuum mechanical finger; the box body is hinged to the test plate, and the box body can be clamped with the test plate after being placed on the test plate so as to fix the vacuum mechanical finger; the gas circuit structure is partially arranged in the box body, one end of the gas circuit structure is used for being connected with a gas source, and the other end of the gas circuit structure communicates with a suction cup of the vacuum mechanical finger. The friction force between the vacuum mechanical finger and the wafer under different pressures can be tested by adjusting the pressure in the gas circuit structure, and the leak rate of the vacuum mechanical finger can be tested by turning off the gas circuit structure. According to the testing device for the vacuum mechanical finger, the box body is connected with the testing plate in a buckling manner, so that the vacuum mechanical finger can be quickly fixed, and the testing efficiency is improved; therefore, the vacuum mechanical finger can stably absorb the wafer for transfer, and the wafer is prevented from falling off due to insufficient adsorption force.

The application discloses a device for quickly and stably testing a Barkhausen noise equipment, which comprises a base, a probe slidably arranged on the base and a positioning assembly arranged on the base, the probe and the positioning assembly are combined into a clamping structure for clamping a bearing ring to be tested, during the test, the probe is connected with an external equipment, the probe is slid to abut against the bearing ring, the bearing ring is clamped in the clamping structure, then the bearing ring is manually driven to rotate, a magnetic elastic value MP detected by the equipment is recorded, and the test is completed. The device has the advantages that the probe and the positioning assembly are combined into the clamping structure, the quick positioning and stable clamping of the bearing ring to be tested are realized, the test can be completed by manually rotating, the operation is simple, and the test efficiency and stability are improved.

The utility model discloses a water-based ink filtering and testing device which comprises a testing pile casing, a plurality of filters are mounted in the testing pile casing, and each filter is provided with an oil inlet pipe and an oil outlet pipe; an inner baffle plate is fixedly connected in the cavity of the test protection cylinder, and the oiling agent outlet pipe penetrates through the inner baffle plate; the inner baffle divides the cavity of the test casing into a waste liquid cavity, and the discharge end of the oiling agent outlet pipe is located in the waste liquid cavity; a protective cover is detachably mounted on the testing protective cylinder, and the oil inlet pipe penetrates through the protective cover; the protective cover is provided with a test pipeline joint structure, the test pipeline joint structure comprises a guide rail rod fixedly connected to the protective cover, the guide rail rod is slidably connected with a movable push seat, and the movable push seat is provided with a plurality of joint structures matched with an oil inlet pipe. According to the structure, a plurality of test samples can be tested synchronously in the test process, the test efficiency is improved, the test safety is high, and the safety is greatly improved under the protection of the protective cover and the test protective cylinder.

The application provides a new energy automobile electric core heat insulation buffering performance test method, and belongs to the heat insulation buffering performance test technical field. The method comprises the following steps: collecting electric core structure, test environment and dynamic response data, identifying failure risk sequence through thermal-mechanical coupling characteristic decoding, extracting characteristic identification to generate electric core test data set; extracting risk characteristics by using historical data, combining risk intensity distribution and anti-failure response curve to calculate heat insulation buffering safety benchmark value; generating initial failure judgment atlas, combining related parameters to construct dynamic compensation matrix to obtain dynamic failure judgment atlas; comparing the feature similarity of real-time test data and dynamic atlas, analyzing actual risk average, and completing performance diagnosis. The application improves test accuracy through dynamic compensation, realizes accurate identification and tracing of failure risk, solves the problems of fixed threshold and weak anti-interference of traditional methods, and guarantees the test precision of electric core heat buffering performance.

This invention discloses a device for measuring the drag reduction effect of a closed pipeline, comprising a water tank, a flow rate controller, a water pump, and a testing mechanism. The testing mechanism includes a testing channel, a testing plate, and several clamping structures. The bottom surface of the testing plate has a protrusion, and the bottom surface of the protrusion has several drag-reducing grooves. The testing plate is detachable and replaceable on the testing channel. In this invention, by setting up a testing mechanism and installing a replaceable testing plate on the testing mechanism, when water flows into the testing channel at a constant speed, the drag reduction effect of the testing plate can be measured by comparing the data from two pressure sensors on both sides of the testing channel. Therefore, by replacing the testing plate with one of different shapes of drag-reducing grooves, the drag reduction effect can be tested.

This invention relates to the field of structural testing in building engineering, and discloses a crack depth measurement system and method for building engineering, belonging to the technical field of structural testing. The method acquires surface images of target cracks using a crack image acquisition device, and combines this with a displacement sensing device to acquire micro-load response data of the crack region. These are then synchronized and standardized to form input data. Based on the standardized input data, crack boundary feature parameters and crack morphological change characteristics are extracted, and a crack cross-sectional feature sequence is constructed. Subsequently, combined with building material response parameters, intermediate values ​​of crack depth response are calculated, and error suppression and fusion processing are performed on abnormal responses to obtain the final crack depth measurement result. The system includes an image and displacement acquisition module, a crack feature analysis module, and a crack depth calculation and fusion module, achieving accurate measurement of crack depth from the surface to the interior.

The present application belongs to the field of terminal device testing, and particularly relates to a testing device and a notebook computer production line. The testing device is provided with a feeding station and a testing station along a first direction. The testing device comprises a conveying structure, a feeding platform arranged in the feeding station along a vertical direction and used for carrying materials, a testing structure arranged in the testing station, and a material moving structure arranged in the testing station. The testing structure and the conveying structure are both arranged in multiple intervals along the vertical direction, and each testing structure corresponds to each conveying structure. The testing structure comprises a box body with a shielding cavity and a testing assembly arranged in the shielding cavity. The feeding platform receives materials at the feeding station and moves the materials to any conveying structure. The conveying structure receives the materials from the feeding platform and moves the materials to the corresponding testing structure. The material moving structure receives the materials from the conveying structure and transfers the materials into the shielding cavity, and the testing assembly detects the materials. The present application can improve the accuracy of testing and the efficiency of testing.