Bridge Deflection Meter

FTQN-2 Bridge Deflection Tester

The FTQN-2 Bridge Deflection Tester is used for measuring static and dynamic deflection, impact coefficient, power spectrum, and interval frequency of various bridges, as well as low-frequency vibration and displacement monitoring of large structures, etc. 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 one target and two lamps with dynamic accuracy range control, flexibly adapting to the needs of different customers and on-site conditions. The powerful processing software can derive the impact coefficient of loads and the internal force distribution status of structures from the numerical analysis of dynamic curves, which helps to judge the weak parts of bridges and the integrity of structures, making it a rare practical bridge detection device.

I. Instrument Principle:

The FTQN-2 Bridge Deflection Tester fixes a special target at the measured point of the bridge to be tested, so that the target is organically combined with the bridge to form resonance, converting the bridge vibration into a specific wavelength light source vibration. The optical signal to be tested is analyzed to an industrial CCD through an optical analysis system, and the longitudinal and transverse displacements of the tested bridge under load and their response curves over time can be measured by detecting the change of the center coordinates of the target's image on the CCD. The K value (Kx, Ky) of the system, that is, 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. Detection 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 and displacement detection of crane booms and suspenders.

III. Product Features:

1.Solves the separation problem of optical path analysis and image acquisition, improving detection accuracy and system stability;

2.Adopts photoelectric conversion principle for detection, not limited by on-site environment and bridge types, 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, realizing two-dimensional deflection measurement in one single time;

6.One target and two lamps, adapting to different detection distances and harsh environmental needs;

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 easy 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: Can be set 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: Works for 20 hours with near lamp, 10 hours with far lamp;

13.Working temperature: -10℃～50℃;

14.Software functions: Can calculate deflection value, impact coefficient, power spectrum, interval frequency, etc.