LVE-12M Video-Extensometer

LVE series video extensimeter is a non-contact high-precision real-time measurement system, it uses a separate digital camera and real-time image processing algorithm.

By shooting the image of the test specimen experiment process and analyzing the characteristics changes of the image,it can dynamically measure the real-time strain, displacement and other data.

It can transmit signals with the testing machine to measure the stress-strain curve and other mechanical properties parameters. This device is suitable for all kinds of mechanical tests.
Characteristic
Non-contact measurement ：Avoid the additional influence of contact means such as strain gauge and grip extensometer on measurement.
Whole process tracking: the whole process does not need to stop, the sample fracture will not damage the measuring device, the whole process is being tracked.
Multiple application scenarios：In addition to general scenarios, it can also adapt to large deformation, small deformation, high and low temperature and other special experiments.
Wide range of application：The material is basically unlimited, and the test can be carried out for samples with different sizes and different materials.
Sub-pixel level measurement accuracy: Based on the image processing algorithm, the calculation accuracy reaches sub-pixel level.
Large strain range：Equipment can measure strain ranges from 0.002% to more than 1000%, far exceeding traditional methods.
Customer scale：Customize the scale size which can be set within hundreds of millimeters.
Multidirectional simultaneous measurement：The longitudinal and transverse strains can be calculated simultaneously.
Multi-pointpair simultaneous measurement ：Equipment can measure the strain in multiple point pairs and is suitable for multi-sample test and multi-section test.
Instruction of software function
Acquisition function
Camera compatibility
Support USB3.0 camera interface；
Automatically obtain camera parameters,plug and play,easy and fast.
Free frame
Cut the frame by free frame selection mode with mouse,quickly set the measurement target area and improve the measurement speed;
Real-time display of clipped frame size and frame rate;
Auxiliary line correction alignment function；
System calibration
Support two modes:automatically calibration and custom calibration;
With automatic calibration function.
Gauge setting
Three gauge modes：free scal，industry scale，fine wire gauge
In real-time measurement mode,support set 10 groups gauge simultaneously;
Support horizontal and vertical gauge setting.
Acquisition mode
Support interval acquisition;
Support fatigue and unmonitored creep deformation test.
Image storage
Support interval storage,memory storage and trigger storage;
Storage can be closed at any time.
Communication function
Support real-time digital and analog signals communication input and output;
Support simultaneous control with test machine date;
2 output ports, 16 input ports;
16 bit data accuracy.
Blue light photosource
LED blue light technology, no stroboscopic, uniform lighting field;
Electrodeless light source brightness adjustment;
Slide rail device
Manual slide rail,support upgrade electric slide rail;
Free adjustment of measuring distance and range.
Analysis function
The calculate mode
Three modes: real-time,calculation and collection;
Real-time calculation of gauge, point data and curve, real-time output;
Supports tracing original gauge data and redefining gauge analysis,
Support external image import calculation.
Multithreading computing
Multi-thread calculation, effectively improve the real-time calculation speed.

Displacement measurement
Support point, point pair and gauge displacement and deformation measurement.
Strain measurement
Support longitudinal and transverse real-time strain measurement;
comes with maximum elongation rate measurement.
alculation of material properties
Elastic Modulus;
Poisson’s ratio.
Zero setting function
Measurement original point quick make zero function,start a new measurement project at any time.
Data Storage
Real-time data output, support Excel format;
Support all data export, select data export, mantissa export;
Curve analysis
real-time multi-curve rendering;
Supports curve data deletion;
Support curve hiding;
Support curve enlargement, diminution, translation, reset;
Data display
Intelligent suspension mode
Convenient multi-software interactive operation,multi-window collaborative display ;
Start,stop,switch display value control;
Curve mode
Curve drawing function: displacement – time series curve, strain – time series curve, force – time series curve, stress – strain curve;
Status bar display
Display picture size and collect frame rate and other information in real time.
Screenshot
With screenshot function.
Real-time coordinates
Display the position and coordinate of the current gauge points in real time;
Time sequence axis management
Time sequence axis manage data status；
View different time status data, images, and curves simultaneously.
Noise Shield
With dual image and data noise shield function, can eliminate the effect of small high-frequency vibration；
The noise shield level can be set to low, medium, and high by default or can be customized.

Type and parameter table

Standard hardware configuration table

Equipment software

The computer and operating desk should be provided by customers, and the standard configuration does not include the computer and operating desk.