43results about How to "Implement synchronous testing" patented technology

The invention provides a lithium battery AC impedance spectrum online synchronous test method and device. The method is characterized by obtaining a current discrete sampling sequence and a voltage discrete sampling sequence through current excitation signals and voltage response signals of a lithium battery; then, calculating a cross-correlation function of the current discrete sampling sequence and the voltage discrete sampling sequence through a Wiener-Hopf equation, and serving the cross-correlation function as a time domain impulse response function of the lithium battery; then, carrying out Fourier transform on the time domain impulse response function to obtain frequency response of the lithium battery; and adjusting the order of a signal generator to obtain lithium battery AC impedance spectrum in different frequency bands. The method and device can realize synchronous test of a plurality of AC frequency impedance of the lithium battery; frequency response of the lithium battery can be obtained through the impulse response function; the required priori knowledge is less; identification can also be carried out very well under the condition that noise and signal-to-noise ratio are rather small; the correlation function can be obtained through the Wiener-Hopf equation; and the device and method have higher anti-jamming capability.

The invention provides a rubber ring high pressure dynamic sealing test device under extreme conditions, and belongs to the technical field of aerospace and mechanical engineering. The rubber ring high pressure dynamic sealing test device under the extreme conditions comprises a reciprocating movement test machine, a high pressure inflator, a gas flowmeter, a heating device, a refrigeration device and a test implementation body. Frictional force, displacement, temperature and gas leakage can be synchronously measured under sealed high pressure dynamic reciprocating movement of a rubber ring in the extreme conditions. The effects and the benefits of the rubber ring high pressure dynamic sealing test device under the extreme conditions are that dynamic sealing performance testing of the rubber ring under different extreme conditions (high pressure, high temperature and low temperature) can be realized. The device has the characteristics of being easy and convenient to assemble and flexible and easy to use.

The invention discloses a smart power grid distribution type measurement and control synchronizing method. A test terminal with Ethernet networking and a GPS (Global Positioning System) synchronous sequence interface forms a hardware platform together with a server by a known rapid Ethernet exchanger, and the synchronous measurement and control of a distribution type power grid can be realized under the control of a synchronous acquisition and management program, wherein 128 terminals form a distribution type test system and are respectively connected at different parts of transformer substations or factories to complete the local data acquisition, control and processing, and meanwhile, each terminal is managed by a Workstation through a network so as to realize the synchronous control of the local test terminal and other terminals and the data processing by cooperation with the other terminals. According to the smart power grid distribution type measurement and control synchronizing method, the synchronous test between the remote test terminals of the power grid is realized, and the demands on the safety monitoring, grid-tied control and proper scheduling of each station by the distribution type power grid can be met.

The invention relates to a wind generating set load testing system meeting the international electrical committee IEC61400-13 standard. The wind generating set load testing system is characterized by comprising a subsystem and a master control system (3), wherein the subsystem comprises a wheel hub testing system (1), a tower top testing system (2) and a meteorological testing system (4); the meteorological testing system (4) is arranged at the bottom of a meteorological anemometer mast; the tower top testing system (2) is arranged on the top of a tower cylinder; the wheel hub testing system (1) is arranged in a wheel hub of the wind generating set and rotates with the wheel hub of the wind generating set when runs; and the master control system is arranged at the bottom of the tower cylinder. The wind generating set load testing system can be applied to verifying design load of the wind generating set, optimizing design scheme of the wind generating set, detecting quality of the wind generating set which leaves factory, avoiding safety accidents and the like and has high practicability.

The invention discloses a portable ground penetrating radar capable of detecting soil water content in a field. The portable ground penetrating radar comprises a transmission / receiving antenna which is connected with a circulator; a transmitter and a receiver are respectively connected with the circulator; a frequency synthesizing unit is connected with the transmitter, and while a signal processing unit is connected with the receiver; a host computer is connected with the signal processing unit. The portable ground penetrating radar has the beneficial effects that the preset code type can be processed by radar wave transmission, quick sampling of target echo, follow radar algorithm processing, and host computer data processing and displaying; all target signals exceeding threshold after detecting and determining can be uploaded to the host computer; the mathematical model obtained in test can be adopted; the host computer can be used for processing and displaying the water content rate data under different soil depth; in addition, the data are transmitted through WLAN, the networking capacity can be expanded in the future so as to achieve multi-point synchronous testing.

The embodiment of the invention discloses an application program test method and device, electronic equipment and a storage medium, relates to the technical field of computers, and can effectively improve the test efficiency of an application program. The method is based on a first terminal, and comprises the steps of receiving a test operation of a tester on a to-be-tested application, and obtaining test operation parameters of the test operation, the test operation parameters comprising a contact coordinate when a finger of the tester is in contact with a screen and a triggering moment corresponding to the contact coordinate; sending the test operation parameters to a server, , so that the server indicates at least one second terminal to test the to-be-tested application arranged on thesecond terminal based on the test operation parameter, the screen parameter of the first terminal being different from the screen parameter of the second terminal, and the screen parameter comprisinga screen size and / or a screen resolution. The method and the device are suitable for testing the application program.

The invention provides a chip synchronous testing device and a chip synchronous testing method, and belongs to the field of chip testing. The chip synchronous testing device comprises communication testing circuits, a high-density connector circuit and a USB selection circuit; the communication testing circuits comprise a plurality of communication line ports and are used for synchronous testing of a plurality of chips; the high-density connector circuit is used for connecting the communication testing circuits and to-be-tested chip equipment; the USB selection circuit is used for switching ona corresponding chip testing interface based on the communication interface type of a to-be-tested chip; the USB selection circuit comprises a 1:3 protocol chip which is used for distinguishing chiptesting paths of different communication interface types. Through the arrangement of chip testing circuits of various interface types, diversity of chip testing types is realized; each type of communication test circuit comprises a plurality of port expansion chips, and a test path is expanded into a plurality of testing paths, so that the synchronous test of t plurality of chips is realized. Theproblem that a plurality of chips cannot be synchronously tested in the prior art is solved.

The invention discloses an audio and video signal synchronization device applicable to bubble acoustic research, which comprises a signal generator, a light emitting diode and a loudspeaker. The output end of the signal generator is connected with a three-way joint; the three-way joint is connected with the light emitting diode and the loudspeaker; the light emitting diode is arranged in a shooting range of a camera; and the loudspeaker is arranged beside a hydrophone. The invention further provides an audio and video signal synchronization method applicable to bubble acoustic research. According to the audio and video signal synchronization device and method applicable to bubble acoustic research, which are disclosed by the invention, when sound and video acquisition equipment does not have a trigger function, high-accuracy synchronous testing of audio and video signals can still be implemented.

The invention discloses a synchronous measurement method for a combustion rate and a combustion wave of a solid propellant. The method comprises the following steps: drilling holes in a radial direction at both axial ends of a cuboid-shaped or cylindrical propellant strip, and measuring a spacing between the two holes; drilling holes on one side of the propellant strip in an axial direction and inserting ignition wires into the holes; inserting two micro platinum-iridium thermocouples into the holes respectively; putting the propellant strip in a constant pressure bomb for ignition, recordinga time t1 at which the first thermocouple shows a maximum voltage when the burned solid propellant is close to a temperature measuring head of the first thermocouple and recording a time t2 at which the second thermocouple shows a maximum voltage when the burned solid propellant is close to a temperature measuring head of the second thermocouple, calculating a combustion rate of the propellant andthen obtaining two combustion wave curves of the propellant strip. The synchronous measurement method of the invention adopts micro thermocouples with a small wire diameter and has a short response time. The synchronous measurement method uses micro thermocouples instead of traditional target line methods to effectively improve a timing accuracy of the target line and realize synchronous test forthe combustion rate and the combustion wave of the solid propellant.

The invention provides a high-pressure dynamic sealing testing device for a rubber ring, and belongs to the technical field of aerospace and mechanical engineering. The device comprises a reciprocating moving testing machine, a high pressure aerator, a gas flow meter and a test implementing body; the reciprocating moving testing machine moves by a reciprocating manner to enable the frictional movement between a sealing rubber ring on a connecting rod in the test implementing body and a replaceable lining testing material, and the reciprocating moving testing machine is able to synchronously measure the force and displacement; the gas leakage quantity can be synchronously measured through a designed pipeline system. The device has the effect and benefit that the high pressure dynamic sealing of the rubber ring can be tested under different design parameters; the device has the characteristics of being simple and convenient to assemble, flexible and easy to be used.

The invention relates to a wind generating set load testing system meeting the international electrical committee IEC61400-13 standard. The wind generating set load testing system is characterized by comprising a subsystem and a master control system (3), wherein the subsystem comprises a wheel hub testing system (1), a tower top testing system (2) and a meteorological testing system (4); the meteorological testing system (4) is arranged at the bottom of a meteorological anemometer mast; the tower top testing system (2) is arranged on the top of a tower cylinder; the wheel hub testing system (1) is arranged in a wheel hub of the wind generating set and rotates with the wheel hub of the wind generating set when runs; and the master control system is arranged at the bottom of the tower cylinder. The wind generating set load testing system can be applied to verifying design load of the wind generating set, optimizing design scheme of the wind generating set, detecting quality of the wind generating set which leaves factory, avoiding safety accidents and the like and has high practicability.

The invention discloses an electronic product aging automatic test platform and method, and the test platform comprises a test box body, the interior of the test box body is provided with at least two test cavities, each test cavity is internally provided with a test plate, the top of each test cavity is provided with a box door, and the top of the test box body is provided with grooves at the two sides of the box door. Mother plates are slidably installed in the grooves, sliding seats are fixedly connected to the tops of the mother plates, shaft rods fixedly connected to the two sides of the box door are embedded into the sliding seat and are in limiting movable fit connection with the sliding seats, two fixing plates are fixedly connected to the inner wall of each testing cavity, and a second air cylinder is fixedly connected to the top end of each fixing plate in the vertical direction; the top ends of the second cylinders are provided with magnetic rollers for supporting the box door, the top of the test box body is fixedly provided with a mounting seat between the two test cavities, and two ends of the mounting seat are rotatably provided with rollers in rolling connection with the lower end face of the box door. The electronic product aging automatic test platform can realize automatic opening and closing of the box door.

The invention discloses an audio and video signal synchronization device applicable to bubble acoustic research, which comprises a signal generator, a light emitting diode and a loudspeaker. The output end of the signal generator is connected with a three-way joint; the three-way joint is connected with the light emitting diode and the loudspeaker; the light emitting diode is arranged in a shooting range of a camera; and the loudspeaker is arranged beside a hydrophone. The invention further provides an audio and video signal synchronization method applicable to bubble acoustic research. According to the audio and video signal synchronization device and method applicable to bubble acoustic research, which are disclosed by the invention, when sound and video acquisition equipment does not have a trigger function, high-accuracy synchronous testing of audio and video signals can still be implemented.

The present invention proposes a method and device for synchronously testing the torque coefficient and friction of a robot's joint motor. The method includes: calculating the analytical expression of the driving torque of the driving joint of the robot according to the dynamic model of the robot and the structural parameters of the robot; The experimental data is input into the analytical expression of the driving torque to obtain the forward torque and reverse torque, and the driving current is fitted to obtain the slope and intercept of the fitted linear function at different experimental positions; combined with the ratio of the reduction ratio of the joint to be tested to obtain the The motor torque coefficient when the joint is moving forward and reverse, and the intercept is taken as the opposite number to obtain the friction coefficient when the joint to be tested is moving forward and reverse; calculate the motor torque coefficient and friction coefficient of different experimental positions The average value is used to obtain the target torque coefficient and target friction value of the joint to be tested during forward and reverse motion. Thus, the synchronous test of the joint motor torque coefficient and the forward and reverse friction coefficient is realized, and the test accuracy is improved.

The invention belongs to the field of aerospace servo valve testing, in particular to a dynamic loading device for servo valve dynamic pressure feedback testing, which includes a dynamic loading cylinder, a displacement sensor, a speed sensor, a pressure sensor, a loading servo valve, a servo valve to be tested and a dynamic loading device. Pressure feedback tester; there is a piston rod in the dynamic loading cylinder, a piston is arranged in the middle of the piston rod, and four cavities are formed by the piston rod, the piston and the inner wall of the dynamic loading cylinder. The present invention adopts a dynamic loading cylinder designed with four cavities, and installs speed sensors, displacement sensors and pressure sensors on the four cavities of the cylinder respectively, so that the load pressure difference loading and state detection functions can be realized at the same time; at the same time, the servo loading dynamic The closed-loop control of the hydraulic cylinder maintains the stability of the load pressure difference, improves the efficiency and accuracy of the dynamic pressure feedback test, and provides guarantee for the production of the dynamic pressure feedback servo valve.

The invention provides a rubber ring high pressure dynamic sealing test device under extreme conditions, and belongs to the technical field of aerospace and mechanical engineering. The rubber ring high pressure dynamic sealing test device under the extreme conditions comprises a reciprocating movement test machine, a high pressure inflator, a gas flowmeter, a heating device, a refrigeration device and a test implementation body. Frictional force, displacement, temperature and gas leakage can be synchronously measured under sealed high pressure dynamic reciprocating movement of a rubber ring in the extreme conditions. The effects and the benefits of the rubber ring high pressure dynamic sealing test device under the extreme conditions are that dynamic sealing performance testing of the rubber ring under different extreme conditions (high pressure, high temperature and low temperature) can be realized. The device has the characteristics of being easy and convenient to assemble and flexible and easy to use.

The present invention provides a multi-condition multi-sample fuel cell stack test system and its control method, which can realize synchronous testing of multiple stack objects under different working conditions, during one test process or within a time period In this way, the data of multiple stacks to be tested can be obtained, and the mutual influence between multiple stacks to be tested due to different working conditions can be avoided, the efficiency of test data acquisition can be greatly improved, and the test data can be reduced. cost.

The invention discloses a device for synchronously testing a reciprocating type friction power generation output property and a friction coefficient. A to-be-tested upper friction pair is arranged atthe front end, which is connected with a cantilever beam, of a cantilever beam supporting rack; a strain gage is arranged on the cantilever beam; a lower friction pair is arranged on a moving block ifa magnetic shaft linear motor and is positioned under the upper friction pair; the lower friction pair which is driven by the magnetic shaft linear motor to linearly move in a reciprocating manner relative to the static upper friction pair; current and voltage signals of friction power generation are output to a control and test computer; and meanwhile, the strain gage synchronously outputs the friction signals of the upper friction pair and the lower friction pair to the control and test computer. Because the control and test computer simultaneously acquires the current and voltage signals generated by friction power generation of the upper friction pair and the lower friction pair and friction signals, synchronous test on the friction power generation output property and the friction coefficient is realized; influence of interface friction behaviors to the friction power generation output property is discovered favorably; and the mechanism of action of the interface friction behaviors to an electric output property is facilitated.

The invention discloses a portable cardiopulmonary detection training instrument. The training instrument comprises a heat rate collector, a breath collector, a data analyzer and a wireless transmission module. The data analyzer is in signal connection with the heart rate collector, the breath collector and the wireless transmission module. The heart rate collector collects heart rate parameters and outputs the heat rate parameters to the data analyzer; the breath collector collects breath parameters and outputs the breath parameters to the data analyzer; a calculation unit, a storage unit anda drawing unit are arranged in the data analyzer. The calculation unit analyzes the heart rate parameters and the breath parameters and outputs heart rate analyzing data and breath analyzing data; the drawing unit reads the heart rate analyzing data and the breath analyzing data which are output by the calculation unit to generate a breath parameter curve graph and a heart rate curve graph. The wireless transmission module is used for data sharing and remote analyzing management. The instrument can synchronously detect the heart rate and the breath. Through real-time signal interaction, reference advice is provided for cardiopulmonary training. Telemedicine is achieved.