58 results about "Measurement testing" patented technology

Systems and methods for materials testing include mage devices employing camera based image capture (e.g., vision or video) for measurement of strain on the test specimen. Such systems and methods collect multiple images of the specimen under test (i.e. during a testing process), with the images being synchronized with other signals of interest for the test (such as specimen load, machine actuator and / or crosshead displacement, etc.). The images of the specimen are analyzed (e.g., in real-time and / or post-test) by algorithms to locate and track specific specimen characteristics as the test progresses.

The utility model provides a rapid positioning precision detection device, which comprises a calibration seat, a test board and a pointer, the center of the calibration seat is provided with a mounting hole, a horizontal mounting part and a vertical mounting part are arranged in the mounting hole, the test board is arranged on the horizontal mounting part or the vertical mounting part, and the pointer is arranged on the test board. The pointer penetrates through the center of the test plate, the pointer is perpendicular to the test plate, and two ends of the pointer respectively extend out of the test plate. The calibration device has the advantages that the calibration seat is matched with the test plate to be directly placed on the treatment head, the center of the test plate is ensured to be overlapped with the actual focus of the treatment head through processing precision, and the calibration accuracy is improved; the positioning precision result can be obtained only by measuring the distance between the center of the test board and the theoretical focus on the software treatment interface through the measurement function of the treatment software, and the operation is simple and convenient.

A meter (1) comprising a phase conductor (10) connected to a phase line of a network, a disconnecting member (12) and a detection circuit, comprising: an injection chain (15) arranged to generate a test signal (St) having a predetermined voltage level when the disconnecting member is open, and arranged to inject the test signal into the phase conductor downstream of the disconnecting member; a measurement chain (16) arranged to measure an intermediate voltage level of the test signal at a measurement point (Pm) of the injection chain, the point being located between the generator assembly and the injection assembly; a processor assembly (17) arranged to act on the intermediate voltage level in order to determine whether the circuit breaker is open or closed.

The invention discloses an accurate measurement device and method based on water tunnel flow field resistance, and relates to the technical field of flow field medium measurement. Comprising a working section and a test board. The working section is internally provided with a testing assembly for testing the flow field medium resistance of the testing plate; the test assembly comprises a fixed plate; sensor fixing seats are symmetrically and fixedly connected to the fixing plate, force sensors are fixedly connected to the sensor fixing seats, and the force sensors are used for detecting the force values of a flow field medium in the working section acting on the X-axis direction and the Y-axis direction of the testing plate; the force sensors are fixedly connected with connecting plates. An adjusting assembly used for adjusting the height of the testing plate is arranged between the testing plate and the connecting plates. The force measuring directions of the Y-axis directions of the adjacent force sensors are opposite, and the force value output by the S-shaped force sensor is the resultant force of the X-axis direction and the Y-axis direction; the horizontal resistance of a flow field medium borne by the test plate can be accurately measured, meanwhile, the pressure difference interference force in the vertical direction is effectively counteracted, and the resistance test precision and stability are improved.

The application relates to the field of measurement testing technology, and specifically discloses a self-adaptive hole-forming quality detection device and system, which comprises a main controller, a plurality of intelligent modules electrically connected with the main controller and axially rotatably connected with the main controller, any intelligent module comprises a shell, a plurality of arm joints are arranged on the side wall of the shell in a circumferential array, a collection conversion module for connecting at least one stroke sensor and a pressure sensor is arranged in the shell, a self-adaptive elongated arm mechanism is arranged on the arm joint, the free end of the arm mechanism is provided with the stroke sensor, and the stroke sensor is in abutting contact with the inner wall of a hole; and any pressure sensor is embeddedly arranged on the inner wall of the hole. According to the application, the space-time distribution relationship between deformation and stress is analyzed in cooperation, not only can the abnormal area be positioned, but also the precursors of stress release and displacement increase representing instability can be reflected, so that the scientific inference and accurate prediction of the hole collapse position, range and even direction can be realized.

The present disclosure relates to a measurement device for characterizing a device-under-test, DUT. The device includes an RF signal generator to generate test signals in parallel. The test signals each have a different frequency. A signal path connects the RF signal generator to a port of the measurement device. The port is connected to the DUT. The signal path feeds test signals to the port and receives response signals of the DUT from the port. The device includes a measurement unit; a forward coupler connected to the signal path and forwards at least a part of each of the test signals to the measurement unit; and a reverse coupler is connected to the signal path and forwards at least a part of the response signals to the measurement unit. The measurement unit simultaneously measures the forwarded parts of the test and response signals, each in amplitude and phase.

A measuring apparatus for electrodes and / or separator membranes for secondary batteries according to one embodiment of the present invention includes a container with a main body capable of housing a test piece and an electrolyte, and a measuring unit for measuring the physical properties of the test piece, wherein the test piece is at least one of an electrode and a separator membrane for secondary batteries, and the measurement is performed with the test piece impregnated in the electrolyte.

The invention discloses an error calculation method based on a pulse sequence with a time scale, and belongs to the technical field of electric power measurement testing. The standard time-frequency signal, a high-frequency standard pulse output by the standard electric energy meter and a detected pulse output by the detected electric energy meter are connected to an acquisition processor; the acquisition processor detects a jump edge of the detected pulse in real time based on a clock provided by the standard time frequency signal, and records moments corresponding to a rising edge and a falling edge of the detected pulse; counting the standard pulse in real time, and recording the current count value of the standard pulse at the corresponding moment; combining the moment information with the count value to form an original sampling sequence with a time mark; the calculation processor reads the stored original sampling sequence with the time scale, and calculates the power value, the error value, the waveform characteristic and the jitter index of the detected electric energy meter according to the edge moment of the detected pulse and the corresponding standard pulse count value; and according to the error distribution condition, the stable state of the verification system is monitored in real time, and an alarm is dynamically triggered.

The invention provides an oil and gas well segmented testing device and method, and relates to the technical field of oil and gas well testing, the device comprises a sleeve, a fracturing bridge plug and a testing short section device, and the testing short section device is connected to the lower portion of the fracturing bridge plug and goes down to a preset position in a well along with the bridge plug. The test short section device is of a cage type structure, a battery, a timer, a holding claw, a pull rod, a motor pulling cylinder and a plugging device are arranged in the test short section device, the timer is used for controlling the gear motor pulling cylinder to act, the pull rod pulls the holding claw to rotate, the plugging device is released, a bridge plug center hole is plugged, and a flowing channel is closed; the testing method comprises the steps of collecting drainage and production data of adjacent wells to determine plugging time; designing a test short section and setting the starting time of a timer; the device is connected with a bridge plug to descend into a well, and staged fracturing is completed; sequentially starting timers after oil-gas well liquid drainage production, blocking section by section, recording wellhead yield data, and calculating the productivity of each section; according to the method, measurement is directly performed through physical isolation, the test result is visual and reliable, the anti-interference capability is high, the cost is low, and the method is suitable for output monitoring of low-permeability and unconventional reservoir staged fractured wells.

The present invention relates to a method for acoustically measuring material properties of a test piece at high temperatures, comprising the following steps: a. heating the test piece to a test temperature range; b. performing background measurements within the test temperature range by collecting vibration signals of the test piece during a calibration period, thereby obtaining a noise signal; c. performing acoustic measurements on the test piece within the test temperature range and during a test period by: c. applying a vibration excitation to the test piece; c. collecting vibration signals of the test piece during the test period, thereby obtaining a vibration response signal to the vibration excitation; and d. obtaining material properties of the test piece by analyzing the vibration response signal, thereby taking the noise signal into account. The present invention also relates to a system for acoustically measuring material properties of a test piece at high temperatures.

Health management device that features: an acquisition unit configured to obtain biological information from a measurement test subject; a unit of determination configured to determine whether the acquired biological information reaches a target value, defined in relation to the biological information, within a specified time period; and a calculation unit configured to calculate an incentive value for the measurement test subject based on a determination result obtained from the determination unit and a number of biological information objects, wherein the acquisition unit also obtains health information indicating the health status of the measurement test subject, the unit of determination determines whether the obtained biological information meets a specified condition or not, which is based on the obtained health information, wherein the specified condition includes a time of day at which blood pressure tends to be high, and The calculation unit further calculates the incentive value for the measurement test subject based on a number of biological information objects for which the determination unit has determined that they meet the condition.

The invention discloses an object surface radiation heat dissipation performance testing device which comprises a shell, a testing area is arranged on the inner wall of the shell, a heating piece is arranged in the testing area, and a to-be-tested sample can be placed at the end of the heating piece; the testing area can simulate the working environment of different samples to be tested through the temperature change of the heating piece; a first temperature sensing piece is arranged in the testing area, and the first temperature sensing piece is used for measuring the temperature value in the testing area; a second temperature sensing piece is arranged on the surface of the to-be-tested sample, and the second temperature sensing piece is used for testing the temperature of the surface of the to-be-tested sample, so that the heat dissipation performance of the metal working at high temperature is represented; by arranging the heating plate capable of accurately controlling the temperature and the built-in first temperature sensing piece, active and accurate simulation of the working temperature of a metal or coating material sample is realized, and the limitation that an existing testing device is only suitable for environment temperature or low-temperature scenes is broken through.

The invention relates to a magnetic flux modulation type high-intensity magnetic field measuring device and method based on self-reference, and relates to the field of metering and testing instruments. Comprising the steps that a motor drives a transmission shaft to control an induction coil to rotate in a strong magnet, two paths of homologous and synchronous induced electromotive force E1 are generated, the induced electromotive force E2 is output through a twisted pair in a conductive slip ring and input into a first signal conditioning module and a second signal conditioning module respectively, and the conditioned induced electromotive force E1 is input into a precise voltage division network for voltage division; the induced electromotive force after voltage division is input into a lock-in amplifier reading system through a first voltage follower to serve as a signal to be measured; the conditioned induced electromotive force E2 is synchronously input into a waveform shaping circuit to be converted into a square wave signal with a fixed amplitude value, the square wave signal after conversion is input into a phase-locked amplifier reading system through a second voltage follower to serve as a reference signal, and the phase-locked amplifier reading system carries out data reading on the induced electromotive force. According to the invention, the problem that the high-intensity magnetic field is difficult to accurately measure and trace is solved.

The invention relates to the technical field of measurement and testing, and discloses a pulse ultrasonic sensing device and method for fluid anomaly detection, and the method comprises the steps: a programmable pulse generator in an application-specific integrated circuit generates a short pulse sequence with preset parameters, and the short pulse sequence is amplified by a power amplifier and then is transmitted to a fluid medium by an ultrasonic transducer. In a transmitting gap, the transmitting-receiving switching circuit switches the system to a receiving mode, and echo signals are conditioned through the low-noise preamplifier, the programmable band-pass filter and the automatic gain control circuit in sequence. The conditioned signals are digitalized through an analog-to-digital converter array, pulse shaping, time sequence alignment, signal accumulation and digital filtering operation are carried out in a digital processing module, then signal envelopes are extracted by an envelope detector, feature vectors are calculated, and finally abnormity judgment is carried out by a judgment logic unit. According to the invention, rapid ultrasonic detection and accurate judgment of abnormal signals are effectively realized.

The present application provides a kind of pipeline vibration test section load non-contact high-speed test method, belong to measurement testing field, including the following steps: first step: test system setup;Second step: test image acquisition;Third step: deformation field calculation;Fourth step: reflection transformation calculation;Fifth step: pipeline full circumferential surface morphology reconstruction;Sixth step: deformation field measurement;From the three-dimensional point cloud of initial state in the three-dimensional point cloud of deformation state, obtain the three-dimensional displacement field of each deformation state, further calculate three-dimensional displacement field, obtain the required strain field;Seventh step: pipeline section stiffness coefficient calibration;Eighth step: based on single system multi-view pipeline full circumferential deformation test method, the deformation information under pipeline section load is collected, and section load data is calculated according to section stiffness coefficient data and strain data, complete test.The present application solves the problem of low test reliability and measurement accuracy caused by the quality of sensor and wire itself in the prior art.

Various embodiments described herein relate to a test chamber device an associated methods and non-transitory machine-readable media including a test chamber, a system builder that is configured to build and apply an equipment load to the test chamber; a load maker that is configured to build and apply a predefined load to the test chamber; and a tester which measures action of the equipment load and the predefined load within the test chamber, producing a test state.

The application relates to a method for measuring system loss in a test system in a radio frequency chip finished product test, comprising the following steps: providing a standard chip with a standard test value; inputting a radio frequency signal to the standard chip through a test machine; measuring an output end of a test circuit board to obtain an output test value; determining a test difference value of the output test value and the standard test value, and judging to determine system output loss. The application also relates to a finished product test method, equipment, medium and product for a radio frequency chip.

The measurement apparatus includes a measurement test selection unit that selects a test item to be measured, a measurement condition analysis unit that analyzes a measurement condition of the selected test item, a wiring condition selection unit that inputs a frequency band to be measured and an antenna terminal of a mobile terminal to be used in the frequency band as a wiring condition for the selected test item, a recommended wiring calculation unit that calculates a wiring method that satisfies the wiring condition and the measurement condition and minimizes the number of times of reconnection to the cable between the port of the measurement device and the antenna terminal of the mobile terminal, and a wiring method display unit that displays the wiring method calculated by the recommended wiring calculation unit as a wiring diagram.

The invention belongs to the technical field of density screening, and discloses solid sample density screening equipment, which comprises a test liquid and a container for accommodating the test liquid, and the density of the test liquid determines the floating and sinking states of a solid sample in the test liquid; the wall of the container is provided with a temperature sensor and a sensor used for measuring the liquid level of the container in the depth direction, and the temperature sensor is used for measuring the temperature of the test liquid. According to the method, density screening can be rapidly carried out on the solid samples, the detection efficiency is greatly improved, the requirement for real-time rapid detection on a large-scale production line can be met, compared with a traditional detection method, the detection time can be shortened by several times or even dozens of times, specifically, the solid samples are rapidly and accurately screened through the buoyancy law, and the detection efficiency is greatly improved. The solid sample with the density smaller than that of the testing liquid floats upwards, and the solid sample with the density larger than that of the testing liquid sinks.

The invention discloses landfill settlement measurement equipment and a measurement method, relates to the technical field of measurement and testing, and is simple to operate, high in randomness and accurate and wide in measurement result. Comprising a movable monitoring point arranged in a landfill and a plurality of measuring points randomly arranged in the landfill, the monitoring point comprises a base, and a fixed first laser range finder and a rotatable second laser range finder are arranged on the base; a first signal receiver used for receiving signals of the first laser range finders is fixedly arranged on one side of the landfill, the base can move front and back relative to the signal receiver in the landfill, the measuring points are a plurality of measuring rods arranged in the landfill, and second signal receivers used for receiving signals of the second laser range finders are arranged on the measuring rods. A signal receiving plate is arranged on the base and located below the first laser range finder and the second laser range finder, and an infrared sensor facing the signal receiving plate is fixedly arranged on the second laser range finder.

The invention relates to a leak detection system (1) for checking the tightness of an object (20) having at least one expandable flexible wall, said system comprising: – a sealed test chamber (101) configured to receive / accommodate the object (20) to be tested; – a device for pressurizing the internal volume of the test chamber (101) to a first test pressure value P1; – a device for pressurizing the internal volume of the object to be tested (20) to a second test pressure value P2, distinct from the first test pressure value P1; – a first sensor (103) for measuring a first leak level F1 in the test chamber (101), this determination being carried out by measuring a physical quantity representative of the leak level as a function of time;– a second measuring sensor (203) for a second leakage level F2 of the object to be tested (20), this determination being carried out by measuring a physical quantity representative of the leakage level as a function of time; – an electronic entity (30) configured to determine an actual leakage Freal in the object to be tested (20) as a function of the first and second test pressure values ​​P1, P2, and the first and second leakage levels F1, F2 measured synchronously over the same test time interval ttest, respectively by the first and second measuring sensors (103, 203; 103', 203'). Figure for the abstract: [Fig. 1];

This invention provides a method for measuring and evaluating stress concentration in a cage-type elastic support, belonging to the field of measurement and testing technology. The method includes the following steps: First, determining the stiffness of the elastic support through calibration tests; second, calculating the stress distribution formula of the cage bars based on their structural dimensions; third, obtaining the analytical solution for stress concentration using the multivariate function extremum method; fourth, obtaining the theoretical solution for the strain gauge measurement range using the area integral method; and fifth, measuring, evaluating, and correcting the stress concentration to obtain the measured value of the stress concentration in the cage bars. This invention solves the problem of inaccurate measurement location and data in existing technologies when measuring stress concentration at the root of the cage bars, providing accurate data support for the structural strength design and fatigue life estimation of elastic supports.

The present application relates to the technical field of testing equipment, and discloses a testing device, testing equipment and a testing method, the testing device is applied to testing equipment with a control device, the testing device comprises a mounting frame, a driving assembly, a force measuring assembly, a testing baffle and a displacement measuring assembly, the driving assembly is connected to the mounting frame; the force measuring assembly is connected to the driving end of the driving assembly, the testing baffle is connected to the force measuring assembly, the driving assembly is suitable for driving the testing baffle to approach or move away from the outer surface of a to-be-tested object through the force measuring assembly; the to-be-tested object is provided with a vacuum hole located on the outer surface and opposite to the testing baffle, for generating suction force on the testing baffle; the displacement measuring assembly is connected to the mounting frame; the force measuring assembly is used for measuring the force data of the testing baffle, and the displacement measuring assembly is used for measuring the displacement data of the testing baffle; the control device is configured to obtain the spacing data between the testing baffle and the outer surface according to the displacement data, so that the suction force of the vacuum hole can be tested and analyzed.

An apparatus for measuring electrical characteristics of a test system includes a base board and an interface. The base board is arranged to host circuit boards. Each circuit board includes a measurement module. The base board includes an interface configured to connect with the test system. The interface is arranged to receive a current, on a current channel, from the test system, and voltages, on respective voltage channels, from the test system. The circuit boards include one or more voltage testing modules. Each voltage testing module includes voltage measurement units. Each voltage measurement unit is configured to measure a voltage on a respective voltage channel. The circuit boards include a current testing module configured to measure a current on the current channel. The interface is arranged to output voltage information from the one or more voltage testing modules and current information from the current testing module.

The invention provides a helicopter damage probability calculation method, relates to the technical field of physical measurement and testing, and fundamentally solves the problem that the damage probability of a helicopter cannot be accurately measured under the simulation of continuous impact in the prior art by constructing a multi-dimensional and self-feedback calculation system with uncertainty self-cognition ability. The prediction misalignment problem caused by neglecting the mode dependence of damage accumulation and the internal uncertainty of the model is solved; according to the method, the accuracy of structure chain type failure risk prediction can be greatly improved, accurate evaluation on threat-dependent structure vulnerability is realized, and the safety and reliability of a simulation system in a complex and changeable environment are enhanced.

The invention discloses a Young modulus measuring method and a Young modulus measuring system for experiment teaching. An optical magnification lens group and a camera are sequentially arranged in the front edge optical axis direction of a fixed column at the bottom end of a test sample, an image of the fixed column is collected, and the positions of scale lines of a reticle and mark lines on the fixed column are recognized through a horizontal projection peak detection algorithm and an image processing algorithm of a multi-line equidistant recognition algorithm. High-precision automatic measurement of shrinkage and elongation of the test sample is realized; the AI tutoring module automatically judges whether an operation error exists or not according to the acknowledged value; the problems of low measurement precision, insufficient guidance, low efficiency and the like in a traditional physical experiment are solved, and the experiment teaching quality is remarkably improved; the device is suitable for experiment teaching of Young modulus measurement in university physical experiments, and can be expanded and applied to industrial or scientific research scenes of material mechanical property testing.

Providing a test gas sensor device for measuring test gases. [Solution] A test gas sensor device (12) for detecting a test gas leak in a test gas leak detection using the spray principle, comprising: a measuring sensor (14) for measuring the test gas concentration at a measurement position (46); an electronic signal processing device (18) configured to compare at least one measurement value recorded by the measuring sensor (14) with a reference value and generate an electronic control signal when the measurement signal exceeds a threshold value which depends on the reference value; and an indicator device (20) connected to the signal processing device (18), which is configured to output an optical and / or acoustic indicator signal when it receives a control signal as soon as the measurement signal exceeds a threshold value.

The present invention proposes a method for controlling a process with at least pre- and post-measuring stations, comprising the steps of: collecting pre-measurement data prior to the process on a workpiece at a pre-measuring station, which is a first station; collecting process data after processing the workpiece at a process station, which is a second station; and collecting post-measurement data as test values ​​at a post-measurement station, which is a fourth station; storing the data in a database in accordance with the type of workpiece; defining the output as “Δ”, where “Δ = post-measurement test value - target adjustment value”, and defining the inputs as data collected from the pre-measurement station and the process station; AI modeling of “Δ” using machine learning algorithms with a software program that uses the input data; and adjusting the target adjustment value of the process station.

A bond test apparatus comprises: a flexure having a fixed end and a free end; a test tool, the test tool being coupled to the free end of the flexure and configured to contact a bond during a bond test, so that application of a test force between the test tool and the bond during a bond test displaces the free end of the flexure relative to the fixed end of the flexure; a linear encoder; and a processor which is configured to receive an output signal from the linear encoder. The linear encoder is configured to measure a displacement of the free end of the flexure relative to the fixed end of the flexure. The linear encoder is configured to deliver a digital output signal to the processor, and the processor is programmed to convert the digital output signal into a measurement of the magnitude of the test force. A method of measuring a test force in a bond test apparatus is also provided.

This invention discloses a method for measuring the coupling coefficient based on an identical waveguide array, belonging to the field of measurement and testing of optical waveguide properties. The method includes: constructing a measurement system for the coupling coefficient of the waveguide array; testing the evolution results of the waveguide array; and recalculating the coupling coefficient through simulation experiments. Based on the consistency between the evolution process of photons in the waveguide array and continuous-time quantum walks, this invention uses an identical single-mode waveguide array, relies on the physical model of continuous-time quantum walks, and measures the output probability amplitude at different evolution lengths. The simulation and test results are evaluated using the least squares method to finally obtain the waveguide coupling coefficient. This method has low requirements for experimental equipment, low workload, and requires less sample width; it can accurately predict and analyze the evolution of light in the waveguide array.