• Monitoring Principles

This system adopts BeiDou automated monitoring method to monitor the surface displacement of the monitoring area for automated deformation monitoring, and its working principle is as follows: each BeiDou monitoring point and reference point receiver receives BeiDou signals in real time and sends them to the control center in real time through the data communication network, and the BeiDou data processing software of the server of the control center decodes the three-dimensional coordinates of each monitoring point, and the data analysis module acquires the three-dimensional coordinates of each monitoring point and compares them with the initial coordinates to obtain the amount of change of the monitoring point. The data analysis module acquires the three-dimensional coordinates of each monitoring point and compares them with the initial coordinates to obtain the amount of change of the monitoring point, and at the same time, the analysis software alarms according to the pre-set warning value.

• The technical parameters are as follows
  • Observation parameters
    BDS: B1, B2, B3
    GPS: L1 C, L2 P, L2 C, L5
    GLONASS: L1 C/A, L2 C/A, L5
  • positioning accuracy
    Level 2.5mm+0.5ppm RMS
    Vertical 5mm+0.5ppm RMS

• Monitoring Principles
  The static level utilizes the principle of connecting fluids, and the liquid level of multiple reservoirs connected together by connecting tubes is always at the same level. By measuring the height of the liquid level of the non-functional reservoirs, the relative difference in the settling of each static level can be calculated.


• The technical parameters are as follows
• Measuring range: 400/1000/2000mm
• Measurement accuracy: ≤0.1F.S.
• Resolution: 0.01%F.S.
• Operating mode: answering type
• Supply voltage: 12VDC
• Working Temperature: -20℃~50℃

• Monitoring Principles
  Seam gauge is installed on the surface of the building to measure the degree of opening and closing (deformation) of expansion joints or peripheral joints of the structure, and can be synchronized to measure the temperature of the buried point. With the addition of supporting accessories can be composed of bedrock displacement meter, surface crack meter, multi-point displacement meter and other deformation measurement instruments.


• The technical parameters are as follows
  • Displacement range: 20, 50, 100, 200mm (optional according to the actual situation)
  • Sensitivity: ≤0.08mm
  • Fitting accuracy: ≈ 0.5%F.
  • Working temperature: -40~+85℃
  • Water pressure resistance: > 1MPa

• Monitoring Principles

Inclinometer is suitable for long-term installation in concrete dams, panel dams, earth and stone dams and other hydraulic buildings, and industrial and civil buildings, roads, bridges, tunnels, roadbeds, civil pits and other measurements of the amount of change in its tilt, easy to realize the automation of the collection of measurement data.

• The technical parameters are as follows
  • Range: ±15°, ±30°, ±60° (optional according to the actual situation)
  • Sensitivity: ≤9″
  • Measurement accuracy: ≤0.05%F.S
  • Signal output: RS485
  • Working temperature: -30~+72℃

• Monitoring Principles

Seepage manometer is suitable for long-term buried in the hydraulic structures or other concrete structures and soil, measuring the structure or soil inside the infiltration (pore) water pressure, and can be synchronized to measure the temperature of the buried point.

• The technical parameters are as follows
  • Range: 3.5, 7.0Mpa (optional according to the actual situation)
  • Sensitivity: ±0.1 °C
  • Resolution: ≤ 0.025%F.S, ≤ 0.02%F.S
  • Fitting accuracy: ≈ 0.1%F.
  • Working temperature: -30~+72℃
  • Water pressure resistance: 1.2 times the measuring range

• Monitoring Principles

Surface strain gauges are suitable for long-term deployment on the surface of hydraulic structures or other structures to measure the amount of strain on the surface of the structure, and can be synchronized to measure the temperature at the deployment point.

Buried strain gauges are suitable for long-term burial in hydraulic structures or other concrete structures to measure the amount of strain inside the structure, and can be synchronized to measure the temperature at the burial point.

• The technical parameters are as follows
  • Range: ±1500με (optional depending on the situation)
  • Sensitivity: ≤0.5με
  • Fitting accuracy: ≈0.1%F.S
  • Working temperature: -40~+80℃
  • Water pressure resistance: > 0.5MPa

• Monitoring Principles

Fixed inclinometer body is made of high-strength corrosion-resistant high-quality stainless steel material. It is suitable for measuring the vertical displacement of structures such as pits, earth and stone dams, panel dams, rocky slopes, earth embankments and roadbeds, etc. The instrument can be used repeatedly with the inclinometer tube.

• The technical parameters are as follows
  • Range: ±30°/±60 (optional depending on actual conditions)
  • Sensitivity: ≤9"
  • Measurement accuracy: ≤0.05%F.S
  • Working temperature: -30~+72℃
  • Water pressure resistance: > 1MPa

• Monitoring Principles

Anchor cable force gauge is suitable for long-term monitoring of the anchorage status of prestressing of hydraulic structures and other concrete structures, rock slopes, bridges, etc., and synchronized measurement of the temperature at the point of burial.

• The technical parameters are as follows
  • Range: 0~5000kN
  • Resolution: ≤ 0.05%F.S
  • Sensitivity: ≤9"
  • Fitting accuracy: ≈ 0.1%F.
  • Working temperature: -30~+72℃
  • Water pressure resistance: > 0.5MPa

• Monitoring Principles

The axial force meter is a vibrating string load cell with the advantages of high resolving power, strong anti-interference performance, sensitive response to concentrated load, reliable measurement value and good stability, etc. It is capable of long-term measurement of the foundation reaction force on the superstructure, the axial force on the steel support and the load during the static pile test, and it can synchronize with the measurement of the temperature of the buried point.

• The technical parameters are as follows
  • Range: 0~6000kN
  • Resolution: ≤ 0.06%F.S
  • Temperature measurement accuracy: ±0.5°C
  • Working temperature: -25~+60℃
  • Water pressure resistance: > 0.5MPa

• Monitoring Principles
  Rainfall automated monitoring using tipping bucket rain gauge sensor for monitoring. Rainwater is collected by the water receiver - through the water inlet valve - into the water storage room - the water level rises - the float rises - the sensor reads the data - the microcomputer control circuit output passive pulse.


• The technical parameters are as follows
• Rainbow caliber: 200±0.6mm
• Resolution: 2mm;
• Rain intensity range: 01 to 4mm/min (Allowed to pass the maximum rain intensity of 8mm/min);
• Measurement accuracy: ≤±4%
• Working environment: temperature: -10 ~ +50 ℃, the relative humidity of the air is unlimited
• BER: less than 10-4
• Reliability index: MTBF ≥25000 hours
• The rain gauge has a good ability to adapt to outdoor working conditions and should be protected against rust, corrosion, blocking and insects.