River Flow Monitoring

1. River Flow Monitoring product overview

River Flow Monitoring can realize real-time monitoring and intelligent management of ecological flow in reservoirs and river channels.River Flow Monitoring is a fully automatic hydrological online monitoring system based on microwave technology that can simultaneously measure water level, flow velocity, flow and rainfall in the channel. It uses advanced K-band planar radar technology to measure the flow rate and water level of water bodies in a non-contact manner. Based on the built-in software algorithm, it calculates and outputs real-time cross-sectional flow and cumulative flow; it can be used in rivers, irrigation canals, underground drainage pipe networks, and flood control. Non-contact flow measurement is used in early warning and other occasions; this product has the characteristics of low power consumption, compact size, high reliability, and easy maintenance; the measurement process is not affected by factors such as temperature, sediment, river pollutants, and floating objects on the water surface.

2. River Flow Monitoring application fields

1. Measurement of flow rate, water level, flow and rainfall in rivers, lakes, tides, reservoir gates, underground water pipe networks, irrigation canals, etc.

2. Auxiliary water treatment operations, such as urban water supply, sewage monitoring, etc.

3. Flow calculation, water inlet and drainage flow monitoring, etc.

3. River Flow Monitoring product features

1. Non-contact measurement, combined with cross-section parameters to calculate flow, is not affected by wind, temperature, haze, sediment, floating objects, etc.

2. Suitable for a variety of measurement conditions, not affected by corrosion and foam, and can output measurement data of flow rate, water level, and flow rate.

3. The flow velocity and water level adopt a planar array radar antenna, which has its own angle measurement function. The equipment is compact and easy to install.

4. Convenient configuration software can conveniently configure parameters according to actual needs to adapt to different usage conditions.

5. Not affected by changes in water vapor, temperature and pressure in the atmosphere

4. River Flow Monitoring monitoring platform

1. CS architecture software platform supports direct observation on mobile phones and PC browsers without the need to install additional software.

2. Support multiple accounts and multiple devices to log in

3. Support real-time data display and historical data display dashboard

4. Cloud servers and cloud data storage are stable and reliable, easy to expand, and load balanced.

5. Support SMS alarm and threshold setting

6. Support map display and view device information.

7. Support data curve analysis

8. Support data export table format

9. Support data forwarding, HJ-212 protocol, TCP forwarding, http protocol, etc.

10. Support data post-processing function

11. Support external running of javascript scripts

5. Summary indicators of River Flow Monitoring

Supply voltage: 100mA (working), <1mA (sleep);

Working voltage: 12V power supply

Operating temperature: -35℃~60℃;

Storage temperature: -40℃~60℃;

Outdoor protection level: IP68

Signal output: RS485/MODBUS protocol;

6. River Flow Monitoring technical parameters

water level measurement

Ranging range: 0.4-40 meters

Distance measurement accuracy: ±1cm

Ranging resolution: 1mm

Interval time: 1-5000min

Flow velocity measurement

Ranging range: 0.15～15m/s

Speed measurement accuracy: ±2%

Speed resolution: 0.01m/s

Flow measurement

Flow = average flow velocity x flow cross-sectional area x correction coefficient

The average flow velocity is collected by the flow meter and calculated by the model.

The flow cross-sectional area is calculated from the water level measured by the water level gauge and the cross-sectional information.

Rainfall monitoring

Measuring range: Rain intensity 0~4mm/min

Measurement accuracy: ±0.2mm

Resolution: 0.2mm

Rain-bearing diameter: φ200mm

Power supply method: solar panel + battery combination power supply

Solar power: 10W/30W (optional)

Battery parameters: DC3.7V 10Ah

Bracket height: 4 meters for vertical pole and 3 meters for cross arm

Working environment: -20℃～80℃ (non-freezing state)

7. Things to note when installing River Flow Monitoring

1. Installation environment

There are no huge rocks blocking water in the test canal section, and there are no huge whirlpools, turbulence, etc.

The test canal section should be straight, stable, and have concentrated water flow.

The test channel section needs to be hardened, and the measurement section should be regular

The test channel section should be kept smooth to prevent accumulation of floating objects.

2. Installation height

Recommended installation height is 3-4 meters

3. Installation direction of flow meter

It is recommended that the current meter beam be oriented towards the direction of the incoming water.

Attachment: Hydrological Monitoring Station Construction Manual

1. Point layout principles:

1. The land use conditions within 1,000 meters near the monitoring point are relatively stable;

2. The horizontal plane around the monitoring point should ensure a collection space of more than 270°. If the monitoring point is close to a building, the horizontal plane around the monitoring point should have a free space of more than 180°;

3. The environmental conditions around the monitoring point are relatively stable, the location conditions must be long-term stable and solid enough, and safety and fire prevention measures must be guaranteed;

4. There is no strong electromagnetic interference or strong vibration source near the monitoring point, and there should be stable lightning protection equipment around as much as possible;

5. It should be considered that the location of the monitoring point has smooth and convenient access and conditions to facilitate maintenance;

6. The height of the monitoring point sensor should be within 2-5 meters from the ground;

7. There are no obvious fixed sources of pollution within 50 meters around the monitoring point;

8. When the weather station is installed on a non-matching customized monitoring pole, the load-bearing capacity of the basic pole must be considered;

9. The monitoring point should try to choose a place with sufficient lighting (try to keep the light time above 6 hours during the day) or there should be a stable and reliable AC220V power supply around the monitoring point.

2. Point confirmation

After the selection of distribution points is completed, mark the points on the plan map of the monitoring area. Submit the floor plan with the location of the monitoring points to Party A for confirmation and signature.

3. Construction

1. Pre-embedded monitoring pole and ground cage

1) According to the actual geological conditions on site, the pre-buried pit for the monitoring pole foundation is constructed manually with an excavator. The size of the pre-embedded pit is 100cm (length)*100cm (width)*100cm (depth). If over-excavation occurs, spoil shall not be used to backfill on site, and gravel or sand shall be used to backfill to the design value. The edge of the pre-embedded pit should be aligned with the south and north directions;

2) Stand the embedded parts vertically in the pit with the threads facing up, and fill the pit with concrete (cement:sand=1:3) until it is slightly above the ground level;

3) According to the season and local climate environment, it will take about 3 days to dry until the cement foundation is completely solidified and then the pre-embedding is completed.

2. Equipment installation and monitoring pole erection

1) Use matching bolts to fix the equipment on the equipment bracket, paying attention to the installation of flat spring washers;

2) Use matching bolts to fix the equipment bracket to the monitoring pole about 3 meters away;

3) Install the solar panel on the solar panel bracket with matching bolts;

4) Install the radar water level sensor on the flange with the matching fastener, and fix the flange on the bracket.

4. Quality control requirements and safety precautions for construction

1. The whole process of monitoring pole construction should be done in sequence, and the appearance of the pole should be straight, streamlined, smooth and vertical;

2. The solar panel is tilted 45° towards the south;

3. The anti-rust layer of the monitoring pole must not be damaged;

4. The cable connector is firm and reliable, waterproof and insulated, and not easily exposed;

5. Pay attention to the safety of pedestrians and vehicles when hoisting;

6. When the monitoring pole is hoisted, a walking rope must be tied to control the stable posture of the lifting object;

7. Set warning signs when hoisting.

5. Construction quality assurance measures

1. The main materials required should comply with the design documents and current standards, and must have factory certificates. Tests should be conducted if necessary.

2. Construction quality control shall be carried out strictly in accordance with the requirements of the specifications. And carry out process inspection. When the previous process is qualified, the next process can be constructed.

3. Strengthen quality awareness, organize construction in strict accordance with the design, current construction specifications and rules, as well as the owner's special requirements and on-site instructions, implement excellence work into the entire construction and production process, and ensure project quality.

4. Strengthen process quality control, organize production strictly according to the quality assurance system, formulate operating standards, process standards, and inspection standards for each process and link, and keep records of the implementation of process standards to ensure orderly connection and traceability of each process. sex.

5. Strengthen project management, implement the technical responsibility system, formulate targeted special construction plans, and carefully provide technical explanations.

6. During construction, ensure that each sub-project is based on high quality and all projects are of qualified quality, and establish model projects to drive the implementation of all projects.

6. Construction period guarantee measures

1. Strengthen technical guidance, strict management, and effective organization and coordination.

2. Strengthen management, improve the internal economic responsibility system, give full play to the role of economic leverage, and fully mobilize the enthusiasm and consciousness of the construction team as an organizational and ideological guarantee to ensure the construction period.

3. Organize a team with rich experience and strong construction capabilities; the personnel and mechanical equipment are well equipped and complete to ensure that the construction plan is completed every day.

4. Grasp the node goals in stages. In order to facilitate inspection, assessment and adjustment, under the control of the overall construction plan, the left and right construction plan goals are prepared, emphasizing the node progress, and realizing the overall plan with effective control.

5. Strengthen material procurement and supply management to ensure timely supply of materials to meet project construction needs.

6. Actively coordinate relationships and create a good construction environment. Organize construction according to procedures so that various factors that affect the progress can be effectively controlled.

7. Safety construction management measures

During the implementation process, relevant laws and regulations on safety, health and environmental sanitation shall be strictly observed. Safety devices, equipment and protective equipment and other effective measures to protect the life, health and safety of on-site construction and supervision personnel;

8. Environmental protection measures

1. Waste disposal: Materials that are not suitable for filling should be piled neatly or transported to designated places in a timely manner;

2. Construction wastewater shall be discharged to the sewer in a timely manner and shall not pollute natural water sources. Noise pollution must be prevented and controlled at construction sites, and construction vehicles must not sound their horns;

3. Prevent the excavated soil from being washed away or overflowing by rainwater, which may easily generate secondary dust in dry weather. The transportation crossing near the excavator needs to be cleaned in time.

9. Real photos of River Flow Monitoring installation