546 results about "Rapid testing" patented technology

The invention relates to the technical field of robot joints, and particularly discloses a robot joint performance testing device which comprises a base, two vertical plates are installed in the middle of the top of the base, a clamping mechanism is arranged between the two vertical plates, and the top of the base is connected with a moving column through two first electric telescopic rods. A moving frame is arranged between the two moving columns, a plurality of balancing weights are arranged in the moving frame, a pushing mechanism is arranged at the top of the moving frame, a connecting frame is arranged at the bottom of the moving frame, an elastic sealing cover is installed between the moving frame and the connecting frame, and a driving mechanism is installed at the bottom of the moving frame. According to the device, through the arrangement of the pushing mechanism, the multiple balancing weights can be sequentially and automatically installed at the tops of the two second installation plates, loads of different weights at the rotating end of the robot joint can be conveniently tested, manual disassembly and assembly of the multiple balancing weights are avoided, and the working efficiency is improved. And the use requirements of people on rapid testing of the joint performance of a large batch of robots can be met.

The invention discloses a method and device for testing the fatigue crack growth rate of a metal material based on temperature gradient change, and relates to the technical field of metal material detection. Mounting a constant low-temperature component and a constant high-temperature component close to two ends of the sample respectively; pasting a plurality of thermocouples on the middle surface of the sample; a magnetic powder dynamic moving assembly is installed on the surface of the sample, and a constant-temperature state is given to magnetic powder; loading a bidirectional tension-compression fatigue testing machine along the through hole of the sample; a thermal imager is arranged far away from the parallel sample, and a thermal imaging image is shot; according to the data, the fatigue crack growth rate of the sample at the corresponding temperature is obtained; according to the method, the fatigue crack growth rate of the metal material can be rapidly tested, meanwhile, the temperature gradient is formed in the sample, the influence of the temperature on the crack growth rate can be obtained in different temperature areas, the device required by the whole test is simple in structure, low in cost and convenient to load and disassemble, and the whole efficiency of the test is effectively improved.

The invention discloses a bridge dynamic performance rapid evaluation method based on dynamic displacement multi-parameter analysis. The method comprises the core steps that S1, a bridge theoretical fundamental frequency f theory and a theoretical impact coefficient mu theory are calculated, and dynamic load efficiency parameters are calibrated; s2, when the bridge is in a good state, the worst vehicle speed Vc, the maximum impact coefficient initial value mumax initial, the fundamental frequency initial value f initial, the first-order modal damping ratio initial value D initial and the quasi-static deformation reference value Ss are measured through a special loading vehicle; s3, collecting and processing daily patrol dynamic displacement data, and rapidly extracting and analyzing an actual measurement fundamental frequency f actual measurement, an actual measurement impact coefficient mu max actual measurement and an actual measurement damping ratio D actual measurement; and S4, comprehensively evaluating the dynamic performance of the bridge by analyzing the change conditions of the f actual measurement, the mumax actual measurement and the D actual measurement. According to the method, standardized rapid testing is achieved, single-time inspection only needs several minutes, traffic interruption is not needed, the rigidity, impact resistance and energy dissipation characteristics of the bridge structure are efficiently evaluated by means of the multiple objectively-quantified power parameters (the fundamental frequency, the impact coefficient and the damping ratio), and the scientificity and efficiency of daily inspection are remarkably improved.

According to the test probe assembly, the test system and the test method provided by the invention, in the test probe assembly, the active test probe is additionally provided with the power detector and / or the signal generator on the basis of the passive test probe, so that the transceiving performance test of the tested piece can be realized under the condition that a test instrument is not used, the test cost is reduced, and the test efficiency is improved. The total transmitting power or the total receiving power of the tested piece can be accurately obtained in one-time transmitting testing or one-time receiving testing, the testing efficiency is greatly improved, and the method is particularly suitable for rapid testing of a production line.

The invention relates to the field of detection, in particular to a bridge arc-shaped steel formwork flatness detection device and method.The bridge arc-shaped steel formwork flatness detection device comprises a positioning frame used for supporting and positioning a steel formwork and further comprises a detection frame used for fixing a detection mechanism, the detection mechanism comprises a set of linear telescopic units, and one end of each linear telescopic unit is matched with the detection frame in a rotating mode; the rotation axis is parallel to the axis of the steel template; a laser detection module is fixed at the other end of the linear telescopic unit; the laser detection module comprises an installation frame which is arranged in the direction parallel to the axis of the steel formwork and used for fixing a laser flatness measuring instrument, the installation frame is matched with the linear telescopic unit in a rotating mode, the rotating axis is parallel to the axis of the steel formwork, and the linear telescopic unit and the installation frame are driven by independent power sources to rotate around the rotating axes of the linear telescopic unit and the installation frame respectively. According to the invention, rapid detection of the flatness of the die surface of the arc-shaped steel template can be realized, and the detection precision is high.

The utility model discloses a fast test device for a sum-difference device, relates to the field of radio frequency measurement, and solves the problems of low test speed and low efficiency caused by long time consumption for taking and installing screws when the existing VNA tests the sum-difference device. The key points of the technical scheme are as follows: the device comprises a first waveguide gasket arranged at a waveguide port of a waveguide coaxial adapter / waveguide load and a second waveguide gasket arranged at a waveguide port of a test fixture, and the first waveguide gasket and the second waveguide gasket attract each other; the surface of the first waveguide gasket is provided with a plurality of pins, and the surface of the second waveguide gasket is provided with a plurality of pin holes corresponding to the pins. And screw locking is replaced by magnetic attraction, so that the VNA sum-difference device testing efficiency is improved.

The invention relates to the technical field of material performance detection, in particular to a rapid testing method for thermal aging failure of an oil and gas pipeline anticorrosive coating material, which comprises the following steps: testing oxidation induction time t of a sample; respectively carrying out thermal aging with different time lengths at 150 DEG C, measuring and calculating A (tri) / A (on) and a melt index change rate, establishing a linear equation of the A (tri) / A (on), and calculating A '(tri) / A' (on) corresponding to 35% of the melt index change rate; carrying out thermo-oxidative aging on the sample at different time lengths, measuring and calculating A (tri) / A (on), and obtaining aging time t'according to A '(tri) / A' (on); carrying out oxidation induction time test on the thermally aged material to obtain a rate coefficient k; and calculating the aging time corresponding to the material failure critical point. The test method provided by the invention can rapidly characterize the thermal aging failure critical point of the anticorrosive coating material, and provides a scientific basis for development of the material.

The invention relates to a nucleic acid detection platform based on an SHERLOCK technology, which is used for diagnosing CAV-2. The SHERLOCK consisting of recombinase polymerase nucleic acid pre-amplification (RPA) and CRISPR-Cas13a is mainly used for specifically recognizing a conserved sequence of CAV-2RNA (Ribonucleic Acid) through crRNA (Complementary Ribonucleic Acid) so as to activate the non-specific'side cutting activity 'of lwCas13a, so that the report RNA is degraded. A real-time fluorescent quantitative PCR (qPCR) system or a lateral flow test strip is used for collecting fluorescent signals generated by cracking of the reporter molecules, and a visual result is displayed. In addition, through HUDSON treatment, RPA-CRISPR can be amplified at room temperature without viral nucleic acid extraction. The detection limit of the method is 1.1 * 10 < 2 > copies / [mu] L, and the method has no cross reaction with other canine infectious viruses. From sample collection to result output, the whole reaction of RPA-CRISPR can be completed within two hours, and the RPA-CRISPR kit is suitable for rapid test of clinical samples and can work well in the field or in primary laboratories. The method can get rid of the limitation of a detection instrument and complex operation, and is suitable for on-site rapid batch detection. The method is preliminarily verified and further optimized and applied.

The invention belongs to the field of coal seam coal rock mechanical property testing, and particularly relates to an accurate fidelity testing method for three-resistance strength parameters of coal rock before heat injection and permeability increase. Comprising the following steps: S1, sample preparation; s2, testing equipment configuration; s3, environment control; testing in the testing cover, setting the temperature and humidity in the testing cover to be consistent with the original sample environment, setting the temperature fluctuation range to be less than or equal to + / -1 DEG C, and maintaining parameter stability through an automatic adjusting system; s4, testing compressive strength; loading at a constant speed of 0.5 MPa / s, recording a failure load and calculating compressive strength c = Fc / A; s5, tensile strength testing; stretching at the speed of 1MPa / s, recording the fracture load and calculating the tensile strength r = 2Fr / piDt; s6, testing the shear strength; loading shear force at a constant speed, recording a failure load and calculating shear strength; S7, analyzing data; and after abnormal values are removed, generating a strength parameter curve, and comparing mechanical property data in different stress states. The accurate fidelity testing method for the three-resistance strength parameters of the coal rock before coal seam heat injection and permeability increase has the advantages of being easy and convenient to operate, rapid in testing, accurate in data and the like.

The invention discloses a device electroluminescence characteristic test system comprising an AC voltage signal source for providing an AC voltage signal; the conductive test bench comprises a base station and a contact probe, the base station is made of a conductive material and is used for placing a sample to be tested, the contact probe comprises a conductive material and is used for forming electric contact with the sample to be tested, and during testing, the sample to be tested is placed on the base station, and the contact probe is used for forming electric contact with the sample to be tested. AC voltage generated by the AC voltage signal source is applied to a to-be-tested sample through the contact probe, and the AC voltage is large enough to drive the to-be-tested sample to emit light; the series resistors are used for forming series connection with a sample to be tested; and a detection instrument. According to the method, the problems of etching damage and complicated operation caused by metal contact in a traditional EL detection method and the problem of inaccurate spectrum test in a PL detection method are solved, a simple and efficient novel EL characterization means without pretreatment is realized, and the method is suitable for rapid test and performance evaluation of various material systems and luminescent devices.

The invention discloses a blade dynamic strain measuring point determination method, device and equipment, a storage medium and a product, and the method comprises the steps: S1, calculating a blade modal through finite element software, calculating the dynamic strain sensitivity of different nodes of the blade in different directions according to the information of all finite element nodes under each order derived from a finite element calculation result; s2, screening and searching the maximum value of the dynamic strain sensitivity from the dynamic strain sensitivities of different nodes and different directions to obtain the blade dynamic strain optimal measurement point position and measurement direction of the strain gauge and the minimum sensitivity of the modal group; and S3, similarly calculating the group sensitivity, the optimal measurement point position and the group optimal measurement direction of all modal groups to obtain the blade dynamic strain optimal measurement point position and measurement direction of all strain gauges and the minimum sensitivity of the modal groups. The method avoids omission of the optimal measuring point, has the characteristics of economy, rapidness and high test sensitivity, and can determine more reasonable dynamic strain measuring points and measuring directions.

The invention relates to a method for rapidly testing the fracture toughness of a composite material based on a digital image. The method comprises the following steps: S1, preparing a sample; s2, loading the sample; s3, data acquisition; s4, data processing; and S5, calculating the fracture toughness. According to the method, the crack propagation behavior is dynamically analyzed by utilizing high-resolution strain data, and the basic mechanical property of the material does not need to be measured in advance, so that the test process is remarkably simplified; meanwhile, a fracture toughness calculation model constructed based on local strain response breaks through indirect correlation limitation of traditional macromechanical parameters, and can adapt to complex stress states of fracture tips at different fiber orientation angles. Besides, through a standardized strain field analysis framework, universal calculation of cross-sample types and sizes is realized, and a high-precision and high-efficiency solution can be provided for fracture evaluation of FRPC from laboratory standard samples to engineering special-shaped structures.

The invention provides a new energy automobile battery rapid detection method and device, and the method comprises the steps: extracting the discrete characteristics of the battery capacity in a to-be-detected battery pack from electrical parameter data, determining the charge state difference of each single battery in a charging process, and extracting the temperature rise characteristics of each single battery from temperature data; determining a monomer aging index of the corresponding battery monomer according to the charge state difference and the temperature rise characteristic of each battery monomer, and further determining the overall aging characteristic of the battery pack to be tested; determining the relative aging gradient of each battery monomer based on the charging and discharging duration of the battery pack to be detected and all monomer aging indexes; and determining a health state detection value of the to-be-detected battery pack through all the relative aging gradients and the overall aging characteristics, and calibrating the health state of the to-be-detected battery pack based on the health state detection value. By adopting the scheme of the invention, the battery pack can be rapidly detected based on the aging of the monomers in the battery pack and the consistency in the battery pack.

The present invention relates to a method and device for rapidly and comprehensively evaluating the performance of tunnel muck used for manufactured sand, comprising the following steps: 1) Specimen preparation: Using a vibration device (1), a temperature control device (3), and a weighing device (10) to rapidly obtain dried and saturated surface-dry specimens. 2) Apparent density and water absorption test: Measuring the mass of water discharged by a known mass of saturated surface-dry specimens and heating to obtain the mass of the dried specimens. 3) Crushing index and softening coefficient test: Pressurizing, automatically screening, and weighing the dried and saturated surface-dry specimens respectively. 4) Soundness test: Realizing the rapid test of soundness based on temperature control, automatic screening, and weighing. 5) Automatic data acquisition and processing: Automatically acquiring and processing the above data. The evaluation method and device proposed by the present invention can simultaneously and rapidly test the physical and mechanical properties and durability of muck, solve the problems such as long test cycle and single test result of muck performance, and are applicable to the rapid evaluation of manufactured sand parent rocks such as muck, pebbles / gravels.

The invention discloses a thermal management system test method of a hydrogen fuel cell unmanned aerial vehicle, which belongs to the field of energy management and comprises the following steps: a, starting a pipeline heater of a thermal management system, and setting the power of the pipeline heater to be Q1; b, opening an electromagnetic valve, and adjusting a proportional valve to open a branch A and close a branch B; c, starting a fan, and adjusting to an incoming flow wind speed required by the test; d, starting an incoming flow heater, and adjusting the power Q2 of the incoming flow heater to the incoming flow temperature required by the test; e, starting a circulating pump, and recording the circulating flow of the cooling liquid; f, judging whether the cooling liquid inlet temperature is equal to the target temperature or not; g, comparing the cooling liquid inlet and outlet temperature difference with the target temperature difference; and h, the heating power is reduced or improved, and the working conditions of the thermal management system meeting the heat dissipation requirement under different thermal load conditions are obtained. According to the invention, rapid detection of the heat dissipation performance of the heat management system in different working environments can be realized, and the working environment of the heat management system meeting the heat dissipation requirement of the hydrogen fuel cell is obtained.

The utility model relates to the technical field of sensor detection, in particular to a high-precision current sensor rapid testing tool which comprises a bottom plate, the upper end of the bottom plate is fixedly connected with a first fixing plate, one side of the first fixing plate is rotatably connected with a first threaded rod through a sliding bearing, and the first threaded rod is rotatably connected with a first threaded plate. The lower end of the first threaded plate is fixedly connected with a first sliding block, and the first sliding block is slidably connected with a first sliding rail. The positioning device has the function of ensuring that the clamping device can quickly and accurately move to a designated position, high-precision position adjustment is achieved through a precise sliding rail and a thread transmission system, so that the precise positioning requirement under different operation requirements is met, the operation speed is increased through the clamping device, and the working efficiency is improved. And the material processing accuracy is greatly improved, so that all steps from material grabbing to final test point placement can be efficiently and accurately completed.

This utility model discloses a rapid testing fixture for dual-mode communication remote control sockets, including a workbench with an annular slide rail. Multiple slide plates are slidably connected to the annular slide rail, and a fixture for placing the socket is fixedly connected to the top of each slide plate. A socket insertion / extraction force testing mechanism is provided on the workbench. Below the testing mechanism are two limiting mechanisms that restrict the movement of the slide plates, located on opposite sides of the annular slide rail. This utility model, by using an annular slide rail in conjunction with multiple slide plates with fixtures, enables the cyclic transport of multiple sockets, allowing for simultaneous preparation and testing of multiple products, significantly improving testing efficiency. Simultaneously, the socket insertion / extraction force testing mechanism accurately measures the force during insertion and extraction, ensuring the reliability of the socket products in actual use.

The utility model relates to the technical field of integrated circuit testing, and particularly discloses an integrated circuit experiment testing device which comprises a shell. A microcontroller, and a digital oscilloscope, a function generator, a digital logic analyzer, a pattern generator, a virtual digital I / O interface, a front PCB panel and a plurality of test interfaces which are electrically connected with the microcontroller are arranged in the shell; the front end of the shell is provided with a voltage acquisition interface, a current acquisition interface, a display screen and a plurality of voltage output ports which are electrically connected with the front PCB panel, the bottom of the shell is provided with an air inlet, a cooling fan is arranged above the air inlet, and the middle part of the shell is provided with a middle air outlet. According to the utility model, a plurality of instruments and meters are integrated to carry out experimental testing, so that the device is convenient to operate and overhaul, smaller in size and small in occupied space, meets the requirement of carrying out rapid testing in a limited space, and is suitable for design, simulation, manufacturing and testing of integrated circuits and related experimental teaching and scientific research activities.

A rapid testing device for the water-binder ratio of a concrete mixture relates to the technical field of concrete quality detection and comprises a workbench, a support, a sampling container, a concrete gas content tester and a control mechanism, the top end of the workbench is connected with the support, the sampling container is installed on the support and provided with a weighing mechanism, and the weighing mechanism is connected with the control mechanism. A concrete gas content tester is arranged at the top of the working table below the sampling container, the weighing mechanism is in signal connection with the control mechanism through a wire, and the control mechanism is provided with a calculation module, a storage module, an input module and a display screen. The device can quickly measure the water-binder ratio of the concrete mixture, is convenient to clean, does not need to evaporate the moisture of the mixture, and further improves the test efficiency and the accuracy of the test result.

The invention discloses a robot hybrid path planning simulation system and method. The system comprises a scene generation node, a visual node, a cost map node, a hybrid path planning node, a control instruction calculation node and an ROS message service. The method comprises the following five steps: initializing a path planning simulation starting system node and service, planning a mixed path, issuing a control instruction and displaying a path planning test result. The method has the advantages that: 1, the input and output of global and local path planning algorithms are unified by using a universal interface, and the defects of high coupling and difficulty in independent test of different level planning methods in the traditional method are overcome; 2, various basic methods for path planning are modularly designed by utilizing a base class-derived class architecture, and the bottlenecks of high scene adaptation cost and long algorithm iteration period in the prior art are broken through; and thirdly, a test node is planned by constructing a basic path, the new algorithm is integrated into the node, rapid test of the new algorithm is realized, and the algorithm test and optimization time is saved.

The utility model provides a rapid testing device for a direct current contactor, belongs to the technical field of testing of direct current contactors, and aims to solve the problem that the use convenience of a tester is affected due to the fact that manual arrangement of signal transmission lines of detection needles consumes a long time. Comprising a tester main body, a tester dustproof cover, a sliding storage box, a signal wire winding shaft, a power transmission shaft and an electromagnetic shielding box, the tester dustproof cover is hinged to the rear side of the tester main body; the sliding storage box is connected to the rear side of the tester main body in an up-down sliding manner; the signal wire winding shaft is rotationally connected to the left side and the right side of the sliding storage box; the power transmission shaft is rotationally connected to the middle of the sliding storage box. The electromagnetic shielding box is in bolted connection with the front side of the sliding storage box; according to the utility model, the inconvenience of manually arranging the detection pin signal transmission lines is avoided, the use convenience of the tester is improved, and a large amount of time is saved.

The embodiment of the invention provides an automatic test calibration method and system for high-precision optical fiber time synchronization equipment. The method comprises the following steps: acquiring a test task of target test equipment; a test instruction set is generated based on the test task, so that an optical switch is controlled to be switched on or switched off according to a corresponding rule through the test instruction set, and in the execution stage of the test instruction set, to-be-measured information is collected so as to determine the completion degree of the target test equipment for the test task according to the to-be-measured information, the execution stages of the to-be-measured instruction set and the test instruction set have an association relationship. According to the scheme, the personalized instruction set can be generated according to different test tasks, full-process automatic testing is achieved, rapid testing of batch equipment can be supported, measurement errors caused by the manual intervention link are omitted, and therefore the test efficiency and the test precision are improved.

The utility model relates to the field of optical testing equipment, and particularly provides a tool for testing a laser, which comprises an installation platform; the rotating platform is rotationally arranged on the surface of the mounting platform; a driving part of the rotary driving assembly is connected with the rotary platform; the laser mounting platform is arranged at the upper part of the rotary driving assembly, and a plurality of to-be-tested lasers are arranged in the laser mounting platform; the test circuit board is arranged between the laser mounting platform and the rotating platform; the laser receiving device is arranged on one side of the rotating platform; the automatic filling platform is arranged on the other side of the rotating platform, and the filling end of the automatic filling platform is arranged close to the laser mounting platform; according to the utility model, through the above structural design, the performance of the laser can be rapidly tested, and the problem that the pins of the laser are easy to damage due to the traditional test means is solved.

The application discloses a kind of drive board batch test circuit and test method, belong to drive board test technical field, including with each drive board connection control board, control board sends drive signal delay one clock test signal to each drive board in turn by PWM signal positive terminal, PWM signal negative terminal, simultaneously, the driving function of multiple drive boards is batch tested, by judging driving gate, source output high-low level missing condition, the driving function of each drive board can be quickly judged whether abnormal, and test efficiency is high. By connecting the drain terminals of all drive boards in parallel, connecting the source terminals in parallel, and then applying high voltage test overvoltage protection function, the overcurrent protection function of the drain and source series test is realized without replacing the test device. The problems of long time required and high cost during batch testing of drive boards are solved, and low-cost, batch drive board rapid testing is realized.

This invention relates to the field of saline soil technology, and more particularly to a test device for saline soil subgrade models under different working conditions. It solves the problem in existing technologies that, in order to utilize saline soil more widely and meet the engineering construction needs of saline soil areas, it is necessary to provide a reasonable basis for judging the suitability of subgrade fillers in saline soil areas, requiring testing of saline soil subgrade structures under different working conditions. The test device for saline soil subgrade models under different working conditions includes a support base, two support side frames fixedly connected to both sides of the top of the support base, and two drive mechanisms mirror-mounted on the top of the support base. Both sides of the two drive mechanisms are detachably connected to the side walls of the adjacent support side frames. Several sets of detection components are arranged at the top between the two drive mechanisms. This invention has a reasonable structure, facilitates comprehensive and rapid testing, and allows for various combinations of tests, greatly improving the comprehensiveness of the testing.

The invention provides a method and a system for safely and quickly testing a text graph model based on adversarial attacks, which belong to the field of adversarial attacks, and comprise the following steps: S1, when the text graph model deploys a cue word filtering mechanism, quickly generating an adversarial text through a beam search method by adopting a text modal attack mode, guiding the text graph model to generate an unsafe image which is semantically consistent with the sensitive content; s2, when a security review mechanism for the generated image is deployed in the text graph model, an image modal attack mode is adopted, an embedded confrontation method based on a potential space is designed, so that the generated image avoids a threshold value which is judged to be unsafe, and a momentum iteration fast gradient method is adopted to accelerate the attack speed; and S3, if the two defense mechanisms are deployed in the text graph model at the same time, the two attack modes are jointly used for attack. According to the method, the coverage range and the efficiency of the security test method for the text generated image model are improved.

The utility model discloses an adjustable conductive adhesive testing device, which relates to the technical field of electric connector testing and comprises a bottom box, a testing machine body is arranged on one side of the top end of the bottom box, a plurality of caulking grooves are formed in the top end of the bottom box, testing boxes are movably embedded in the inner sides of the caulking grooves, slideways are arranged on the two sides of the caulking grooves, and the slideways are arranged on the bottom box. A sliding frame is arranged on the inner side of the sliding way, a conductive block is installed in the middle of the top end of the sliding frame, a nut seat is fixedly connected to the middle of the bottom end of the sliding frame, a ball screw is arranged in the bottom box, a plurality of notches are formed in the side wall of the bottom box, and rotating rods are rotationally connected to the middles of the notches. According to the utility model, a series of structures are arranged, so that a plurality of different types of conductive adhesives can be quickly tested, the time required for testing the plurality of conductive adhesives is saved, the testing efficiency of the device is improved, meanwhile, the test box can be quickly taken down from the device, and a conductive adhesive test sample can be more conveniently and quickly replaced.

The invention discloses a rapid OTA testing method and system for a satellite communication terminal, relates to the technical field of satellite communication testing, and solves the technical problems that the OTA testing time of the satellite terminal is too long, the efficiency is extremely low, and the industrial large-scale testing requirement is difficult to meet. The method comprises the following steps: establishing signaling connection between a satellite simulator and a to-be-tested terminal, and closing ephemeris consistency verification and position verification functions of the to-be-tested terminal; respectively configuring reference positions of the to-be-tested terminal and the target satellite through the satellite simulator to obtain a plurality of optimized test scenes; generating a test signal containing ephemeris information of the target satellite based on the plurality of test scenes; and selecting a target test scene from the optimized test scene and the standard test scene to carry out OTA performance test on the to-be-tested terminal, and closing an uplink filling function of the to-be-tested terminal in the OTA receiving performance test process. According to the method, the OTA test time of the satellite communication terminal is remarkably shortened, the test efficiency is improved, and the large-scale test requirement is met.

The utility model discloses a student-side camera module developing and testing device in oral medicine multimedia teaching, a linear slide rail is fixed on a base plate, a camera module support and a depth-of-field measuring jig support are respectively and slidably installed on the linear slide rail, and a graduated scale is arranged on the base plate or the linear slide rail. A camera module to be tested is installed on the camera module support, the depth-of-field measuring jig is installed on the depth-of-field measuring jig support, and the first positioning device and the second positioning device can position the camera module support and the depth-of-field measuring jig support on the linear sliding rail respectively. A plurality of step surfaces are formed on one side, facing the tested camera module, of the depth-of-field measurement jig, the cross sectional area of each step surface is synchronously increased along with step-by-step increase of the distance from the step surface to the camera module, and the camera module transmits an image shot by the depth-of-field measurement jig to the display in real time for display. According to the utility model, whether the camera module meets the use requirements of students can be rapidly tested and judged.

A kind of battery box rapid testing device, including positive pole framework and negative pole framework, first positive pole conductive column, second positive pole conductive column, first negative pole conductive column, second negative pole conductive column are arranged between positive pole framework and negative pole framework, first spring is sleeved on first positive pole conductive column, second spring is sleeved on second positive pole conductive column.The beneficial effects of the present application are: change the inspection test mode of the past electronic lock battery box that needs to place battery, simulate battery to detect the qualified rate of electronic lock battery box, the contact detection of battery box is completed simultaneously, the detection efficiency is greatly improved, the detection efficiency is high, the production efficiency of electronic lock is improved, the labor cost is reduced, without using battery, detection can be carried out, reduce production cost, effectively and quickly carry out the detection process of electronic lock battery box.