FTQN-2 Bridge Deflection Tester
The FTQN-2 Bridge Deflection Tester is used to measure static and dynamic deflections, impact coefficients, power spectra, and interval frequencies of various bridges, as well as low-frequency vibration and displacement monitoring of large structures. It can provide accurate data for bridge construction, supervision, acceptance, and testing departments, effectively guiding their work.
The FTQN-2 Bridge Deflection Tester adopts a long-distance non-contact photoelectric conversion method to measure the dynamic and static deflection curves of bridges. It innovatively integrates optical path analysis and image acquisition, and uses a "one target, two lights" design with dynamic accuracy range control, flexibly adapting to different customer and on-site requirements. Its powerful processing software can derive the impact coefficient of loads and the internal force distribution of structures from dynamic curve numerical analysis, helping to identify weak parts of bridges and structural integrity, making it a rare practical bridge testing device.
I. Instrument Principle:
The FTQN-2 Bridge Deflection Tester fixes a special target at the measured point of the bridge under test, combining the target with the bridge to form resonance, converting bridge vibration into light source vibration of specific wavelengths. The optical analysis system resolves the measured optical signal to an industrial CCD, and by detecting changes in the central coordinates of the target's image on the CCD, it can measure the longitudinal and transverse displacements of the bridge under load and their response curves over time. The system's K values (Kx, Ky), i.e., the actual displacement value represented by each pixel on the CCD, can be calibrated before measurement.
II. Application Fields:
1.Bridge construction control and monitoring;
2.Static and dynamic load tests of existing bridges;
3.Bridge completion acceptance and appraisal;
4. Testing of special bridges such as floating bridges and suspension bridges;
5.Deformation monitoring of beams and columns of long-span structures;
6.Low-frequency vibration monitoring of large structures;
7.Deformation and displacement monitoring of high-rise buildings;
8.Deformation and vibration displacement monitoring of dams and docks;
9.Vibration and deformation detection of large piers, drilling platforms, etc.;
10.Load displacement detection of crane booms and lifting rods.
III. Product Features:
1.Solves the separation problem of optical path analysis and image acquisition, improving detection accuracy and system stability;
2.Detects based on photoelectric conversion principle, not limited by on-site environment and bridge type, with strong adaptability;
3.Non-contact, long-distance, high-precision, with scientific and efficient design principle;
4.Dynamic accuracy and range, adapting to various bridge types, on-site conditions, and different customer needs;
5.Industrial area array CCD, enabling two-dimensional deflection measurement in a single operation;
6.One target with two lights, adapting to different detection distances and harsh environment requirements;
7.Automatic calibration, avoiding human errors and saving manpower;
8.Real-time display and automatic saving of measurement data, highly intelligent;
9.Wireless remote control target with built-in high-capacity lithium battery, enabling efficient and convenient detection.
IV. Technical Parameters:
1.Detection method: Photoelectric image method;
2.Measurement parameters: Single-point dynamic, multi-point static;
3.Detection distance: 500m;
4.Detection range: 0.8m;
5.Measurement accuracy: 0.1mm (at 50m);
6.Sampling frequency: 100Hz;
7.Frequency response: 50Hz;
8.Recording time: Adjustable to any time;
9.Transmission interface: USB;
10.Calibration method: Automatic calibration;
11.Target configuration: Remote control, built-in lithium battery, 10-hour battery life;
12.Battery capacity: 20h operation with near light, 10h with far light;
13.Operating temperature: -10℃～50℃;
14.Software functions: Capable of calculating deflection values, impact coefficients, power spectra, interval frequencies, etc.
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