Monitoring Principles

Horizontal and vertical monitoring is realized by satellite RTK differential technology with real-time accuracy of centimeter level and post-decompute accuracy of millimeter level.

Monitoring equipment

GNSS All-in-One

Working Principle

The vibration tilt sensor is powered by a built-in 76AH high-density lithium-ion battery, 2/3/4G communication mode, internal integration of three-axis MEMS acceleration sensor, magnetometer, positioning module, to achieve multi-factor acquisition; the use of extremely low-power design + frequency conversion acquisition mode to control system power consumption, low-power mode, automatic frequency reduction acquisition (400Hz), the need for timed acquisition or the sensor tilt or vibration, immediately switch to work mode, high-frequency sampling (2000Hz) and continuously add the report. or vibration, immediately switch to the working mode, high-frequency sampling (2000Hz) and continuously add the report.

Monitoring equipment

Vibration Skew Sensors

Fixed Skew Side Gauge

Monitoring Principles

Anchor cable meter is vibrating string sensor, vibrating string sensor sensitive element is a metal steel string, it is connected with the sensor force parts fixed, using the self-oscillation frequency of the steel string and the steel string is subjected to the relationship between the applied tension of the various physical quantities measured. Anchor cable gauge is mainly used in cable structure load-bearing bridges, pre-stressing, rock cable anchoring, dam cable anchoring and other cable cable force measurement.

anchor cable gauge

Magnetic flux sensor is based on the principle of magnetoelastic effect for measurement, when the ferromagnetic material is subjected to external force, its internal mechanical stress or strain, the corresponding magnetic permeability changes, through the determination of the magnetic permeability changes to reflect the stress (or cable force) changes. Magnetic flux sensors can be applied to the cable monitoring of cable-stayed bridges, the cable monitoring of suspension bridges, and the cable monitoring of suspension bridges.

Magnetic Flux Sensor

Monitoring Principles

Stress-strain sensor is a vibrating string sensor, mainly installed in the bridge surface steel structure, when the measured structure deformation, will drive the surface strain gauge deformation, deformation through the front and rear end seat to the vibrating string into the vibrating string stress changes, thus changing the vibration frequency of the vibrating string. Electromagnetic coil excitation vibration string and measure its vibration frequency, frequency signal through the cable transmission to the reading device, can be measured to cause the deformation of the structure to be measured strain. At the same time, the temperature value of the deployment point can be measured simultaneously.

stress-strain gauge

Monitoring Principles

Monitor the temperature and humidity, wind speed and direction, and rainfall of the environment in which the bridge is located.

Monitoring equipment

Six-element meteorological sensors

Crack meter in the monitoring project is mainly for displacement monitoring, in the harsh environment of long-term monitoring crack depth, width, opening and closing degree of the instrument, the principle of intuitive, simple structure, reliable work, long service life; high resolution, wide range of applications, waterproof performance is remarkable, suitable for different applications;.

crack gauge

Through the application of video recording, playback, linkage alarm, monitoring strategy formulation and emergency command for remote monitoring objects, it achieves the dual functions of monitoring and communication, and fully meets the needs of remote monitoring and emergency command.

surveillance camera