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.

Monitoring equipment

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.

Monitoring equipment

The technical parameters are as follows:

Measuring range: 0～70m

Resolution: 1cm

Measurement accuracy: ±1cm

Display: OLED Chinese and English

Measuring time: ≤20s

Beam angle: ≤12°

Power supply: 6VDC～28VDC

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.

Monitoring equipment

The technical parameters are as follows:

Observed parameters BDS B1, B2
gps l1 c/a, l2 e, l2 c, l5
GLONASS L1 C/A, L2 C/A

positioning accuracy
Level 2.5mm+1ppm RMS
Vertical 5mm+1ppm RMS

Environmental parameters Positioning time Cold start＜45S
Hot start 30S Initialization reliability ＞99.9%

Operating temperature -40˚C to +75˚C Recapture time <2S
Supply voltage 9 to 36 (V) DC Storage temperature -55˚C to +85˚C

Mechanical shock MIL810D, ±40g Baud rate 2400 to 460800
Humidity 99% non-condensing Power consumption <3.5W

Monitoring Principles

The vibrating string type seepage manometer is buried for a long time in the hydraulic structure or other concrete structure and soil body, measuring the structure or soil body inside the infiltration (pore) water pressure, calculating the water level through the measured water pressure, and can be synchronized with the measurement of the temperature of the buried point. Seepage manometer with supporting accessories can be used in the pressure measurement pipeline, foundation drilling.

Monitoring equipment

The technical parameters are as follows:

Measuring range: 0 to 7MPa

Resolution: ≤ 025%F.

Fitting accuracy: ≈ 1%F.S/0.5%F.S

Temperature measurement range: -40℃~+85℃.

Sensitivity: ±1 °C

Output signal: Hz

Water pressure resistance: 2 times the measuring range

Insulation resistance: ≥50MΩ

Monitoring Principles

Utilizing the open channel technology, the flow rate is obtained by measuring the height of the fluid level based on the flow rate-level transport algorithm, combined with the geometry of the standard weir, side slope coefficients, channel accuracy, hydraulic ramps, and correction factors for the vertical plane of the flow rate, and then by the microprocessor operation inside the instrument.

Monitoring equipment

The technical parameters are as follows:

Measuring range: 1m

Blind spot: 06m

Ranging accuracy: ±1mm-±25%F.S

Material: ABS, reinforced PP

Mounting ports: 5

Protection class: IP65

Working environment: -40 ~ +85℃

Display: Chinese 3-inch LCD

Keys: 18-bit keyboard operation

Electrical Interface: 5-5

Power supply: AC220V or DC12~24V power supply

Power consumption: 5W

Protection class: IP65

Working environment: -40 ~ +85℃

Signal input: RS485

Monitoring Principles

In the process of concrete hardening, due to concrete dehydration, caused by contraction, or by the temperature difference between high and low temperatures, causing uneven expansion and contraction and cracks. In civil engineering quality inspection often use the seam gauge (seam gauge) for monitoring, seam gauge (seam gauge) is suitable for long-term buried in hydraulic buildings or other concrete buildings or the surface, measurement of structural expansion joints or peripheral joints opening and closing (deformation), and can be synchronized with the measurement of the temperature of the buried point. It can be equipped with accessories to form bedrock variometer, surface crack meter, multi-point variometer and other instruments for measuring deformation.

Monitoring equipment

The technical parameters are as follows:

Displacement range (m): ≤3m

Displacement accuracy (mm): 1

Measuring range (m): 50

Tilt angle range: ±90

Angular accuracy: 1

Working temperature: -40~85℃

Sampling interval: 1~500

Monitoring Principles

Stress gauge (stress gauge) is an instrument to measure the ground stress. According to the ground stress measurement in the sensor used in different stiffness, the sensor can be divided into two kinds: if the stiffness than the measured location of the rock's stiffness, known as the stress gauge; if less than the measured area of the rock's stiffness, it is called deformation gauge or strain gauge. Because the stress gauge stiffness, has a great ability to resist the deformation of the rock, and the pressure itself depends mainly on the stress in the rock, and the elastic constants of the rock has little relationship, the greater the stiffness of this effect is more pronounced, and therefore it is not necessary to accurately determine the elastic constants of the rock when measuring.

Monitoring equipment

The technical parameters are as follows:

Standard range: 400Mpa

Nonlinearity: ≤0.5%F.S.

Sensitivity: ±1mm-±25%F.S

Endurance: 24 hours of uninterrupted monitoring

Communication capability: based on 4G/5G communication, data transmission delay is less than 10ms

The technical parameters are as follows:

Standard range: ±1500με

Measuring standard: 150mm

Sensitivity: 1με (1Hz)

Working Temperature: -10℃～70℃

Communication capability: based on 4G/5G communication, data transmission delay is less than 10ms

Monitoring Principles

Cameras are deployed in important areas such as the upstream water feet of each reservoir. With the help of video AI technology, it realizes flood discharge monitoring, reservoir water level monitoring, and reservoir engineering management. Based on artificial intelligence image recognition technology, through deep learning algorithms, it automatically extracts, locates and analyzes specific scenes and behaviors appearing in the video monitoring, automatically identifies the scenes and illegal and unauthorized contents in the front-end video streaming data, such as trespassing by illegal people, illegal swimming, etc., and timely carries out intelligent early warning, remediation instructions are automatically sent by outbound call, so as to improve the efficiency of manual supervision and costs. Adopting cloud inspection method to seamlessly connect with the existing artificial intelligent inspection to improve and enhance the traditional manual inspection work mode.

Monitoring equipment

The technical parameters are as follows.

Minimum illumination: Color: 005 Lux @ (F1.5, AGC ON), B/W: 0.001 Lux @ (F1.5, AGC ON), 0 lux with IR

Focal length: 5.9~-177 mm; 30X optical zoom

Field of view: 57.4°~2.3° (wide-angle~telephoto)

Infrared irradiation distance: 150 m

Horizontal range: Horizontal 360° Vertical range: -15°~90° (auto flip)

Horizontal speed: Horizontal keying speed: 1°~160°/s, speed settable; Horizontal preset point speed: 240°/s Vertical speed: Vertical keying speed: 1°~120°/s, speed settable; Vertical preset point speed: 200°/s

Main stream frame rate resolution: 50 Hz: 25 fps (2560 × 1440); 60 Hz: 24 fps (2560 × 1440)

Video Compression Standard: H.265, 264, MJPEG

Network Storage: NAS (NFS, SMB/CIFS)

Network interface: RJ45 network port, adaptive 10 M/100 M network data

Working Principle

Early warning broadcasting equipment is based on 4G public network, providing users with multi-functional wireless early warning broadcasting services. High-fidelity power amplifier: strong, clear and bright sound quality, strong directivity, wide spread, even in a vast area, many obstacles in the environment, is still clear spread

Site Features

Real-time, timed, and periodic notification shouts

Mobile APP, 4G microphone emergency remote shouting

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Short message alarms, voice alarms, local microphone shouting alarms