1. Purpose

BSFR surface runoff measurement is used to measure the water flow formed by rainfall or natural rivers on the surface. The system consists of a triangular weir, high-precision water level sensors, and telemetry data acquisition. The data is wirelessly transmitted to the software platform through GRABS technology. The software platform addVantage Pro has powerful data processing capabilities and can establish runoff calculation models online, allowing users to reference rainfall data, evapotranspiration data, soil moisture and other data from the same system to establish models and observe hydrological dynamics in the watershed.

characteristic

Online monitoring, continuous monitoring, and unmanned monitoring.

Wireless data transmission with GPRS and RADIO transmission options for flexible networking.

A platform can simultaneously access and manage monitoring equipment with different functions such as meteorological stations, soil moisture monitoring stations, hydrological and water quality monitoring stations, etc.

World Meteorological Organization (WMO) standard instruments, manufactured in Germany. 20 years of experience in the research and production of wireless monitoring instruments and equipment, with quality assurance.

Several top brand companies such as OTT in Germany, LUFFT in Germany, Hash in the United States, Kipp&Zone in the Netherlands, etc. provide system integrated sensors to ensure the accuracy, stability, and environmental tolerance of the sensors.

RTU (Remote Sensing Data Acquisition) is highly integrated with traditional data collectors, data transmission units, batteries, etc. It is IP67 waterproof and has strong field tolerance.

The data has three levels of cache: RTU, gateway, and server. Discontinued data is actively resumed to ensure the integrity of the data is not lost.

Data transmission protocol encryption ensures secure data transmission and prevents malicious interception and parsing.

B/S architecture software platform, the user side does not need to install any software, and can view their monitoring instruments and equipment online using a browser. You can view, download, and analyze data online at any time.

The entire system is designed with low power consumption and powered by solar energy, requiring small solar panels and stable power supply.

Lightning protection design, installation design of RTU and main sensors, connection of metal parts to stainless steel wind poles, and protection of lightning protection circuits.

2 Data transmission and system architecture

Based on the geographical environment conditions of the installation monitoring station of the project and the status of mobile communication signals in the area, we choose different RTU models to network and achieve wireless data transmission.

3 Configuration:

One set of stainless steel Bachel groove triangular water weir; 1 water level sensor; 1 rainfall sensor; 1 telemetry data acquisition; 1 set of solar power supply system

3.1 A760 telemetry data acquisition

ADCON's A760 RTU is a new generation of ultra-low power telemetry data acquisition, endowed with many product features, including autonomous battery monitoring, larger storage space, data encryption transmission, FOTA firmware upgrade, Internet of Things technology, cutting-edge communication technology, and other new features. The A760 is equipped with SDI-12, analog, pulse, and digital I/O ports, compatible with 3G/4G/LTE versions, and 32-bit CPU ensures faster and more reliable data transmission. It can be combined with the addVANTAGE Pro data platform software to form a complete telemetry solution.

TECHNICAL INDEX

Size: 160 x 60 x 80 mm

Weight: 1200 g

Protection level: IP65 & IP67

Operating temperature range:- 30°C to +65°C

Shell: Powder coated aluminum alloy shell, stainless steel screws, and nickel copper plated slots

Integrated data collection, data transmission, and power supply, with built-in wireless transmission module and rechargeable battery

Physical interfaces: 3 Pentax 7-pin M9 sensor interfaces (A, B, D), 1 Pentax 5-pin M9 power interface, and 1 TNC antenna interface. All interfaces achieve IP67 protection level.

Power supply: Internal 6.0V 3.3Ah nickel hydrogen battery, external solar power supply or main power adapter

I/O ports: 9 analog input channels (0-2.5 VDC); 3 pulse channels; 3 digital channels in/out (0-5V TTL); 40 SDI-12 data channels

Resolution: 12 bits @ 0-2.5V

Counting input: 3 configurable I/O ports, each 30Hz or 500Hz

Sensor excitation: 5.6 to 7.2V

Collection interval: user-defined (10s to 12h)

Memory: 16MB, capable of recording 2 million values

Internal Sensor: Temperature

Rain gauge event function: Yes

Digital event function: Yes

Internal battery working time (without charging conditions): Standard mode for more than 14 days, power-saving mode for more than 6 months

External power supply: 9V/540 mA solar panel

3.2 Water level sensor

Ultrasonic water level sensor

Measurement range: 0.3-5m or 0.5-10m

resolving power: 1mm

Accuracy: 1%

Noise suppression: Acoustic noise suppression

Temperature compensation: Built in temperature compensation

Signal output: SDI-12

Waterproof grade: IP67

Power supply: 6V... 16V

Power consumption: 8mA; Sleep mode: 40µA

Working temperature:- 40°C … 65°C

3.3 Rainfall RG1

RG1 is a universal rainfall sensor that can meet different application fields such as agriculture and hydro meteorology; The sensor is equipped with a filter screen to prevent debris from entering the interior of the sensor; The entire sensor is made of aluminum material and equipped with a complete set of installation components such as mast and pipe clamp, suitable for connecting and using Adcon's multiple RTU devices.

Technical Parameter

Resolution: 0.2 mm

Opening area: 200cm2

Measurement equipment: Stainless steel double tipping bucket rain gauge

Capacity: 1mm/min

Output signal: 1 pulse/temp

Weight: 0.5 kg

Specification: 292mm high x 190mm diameter

Material: Aluminum Oxide

Cable: 1m with 7-pin M9 interface

Operating temperature:- 4 ~ +85℃
3.4 Bachel trough triangular cofferdam

Material: Stainless steel

Size: Total length 1.626 meters, height 0.77 meters, width 0.575 meters (or customized according to needs, available in small sizes 1-5 and standard sizes 6-10)

3.5 Software Platform addVantage Pro

Advantage Pro is a universal software operating platform for ADCON instruments, which can be integrated with all ADCON RTUs to achieve online monitoring of different monitoring functions such as meteorology, soil, hydrology, and water quality. This platform is used in the field of ecological environment monitoring, and has won the trust and praise of a large number of users with its mature, stable, and friendly operating interface, continuous upgrade services, and other advantages. Since the first version was released in 1993, we have been continuously upgrading and releasing new versions for over 20 years, improving old features and adding new ones. AddVantage Pro adopts a B/S architecture, and the user side does not need to install any software. Both PC computers and smartphones can directly log in to the platform through a regular internet browser to view and process data online. Users can set up monitoring data warnings on the platform, write calculation models based on meteorological environment monitoring data, and apply warning requirements from multiple fields.

major function
1. User management

a) User Creation

b) User Name and Password Management

2. User permission management

3. Language selection (multiple languages, including Chinese and English)

4. Monitoring station management

a) Monitoring station types - meteorological, hydrological, soil, etc

b) Geographical location of monitoring station - text and map display

5. Equipment status management

a) Equipment voltage monitoring - solar power supply status

b) Equipment temperature monitoring

c) Data transmission monitoring - extension or loss report

6. Data viewing

a) View graphics

b) View trend chart

c) Table View

d) Map View

7. Data analysis

a) Mean value, cumulative value, extreme value

b) Single site parameter fitting analysis

c) Multiple site parameter fitting analysis

8. Online computing plugin

a) Self built formula

b) Accumulated temperature

c) Dew point

d) Wet bulb temperature

e) Evaporation

f) Statistics - Average, Cumulative, Extreme

9. Data report

a) PDF report

b) CSV report

c) Proactively schedule EMAIL sending of reports to users

10. Warning

a) Warning threshold setting

11. Warning information release - mobile SMS, EMAIL

12. Measurement and Control

a) Intelligent control of irrigation, water gates and other equipment

13. Agricultural application extension module

a) Monitoring and early warning of crop pests and diseases

b) Pesticide application management

c) Phenological period management