The BeiDou satellite navigation system is an important space-time infrastructure that serves the world and is independently developed, built and operated by my country with a view to national security and economic and social development needs. It has functions such as positioning navigation, timing and short message services. The SCJ-RTU01 telemetry terminal has a built-in 4G module combined with BeiDou III. It is a product that combines data acquisition, transmission, BeiDou module and 4G communication. It is widely used in geological disasters, hydrology and water resources, flash flood warning, communication systems, weather forecasts and other fields. According to relevant deployment requirements, in order to accelerate the large-scale application of BeiDou water conservancy, enhance the application value of water conservancy "+ BeiDou" space-time information, enable the intelligent application of water conservancy business, further strengthen the construction of a digital twin water conservancy system with "four prediction" functions, and contribute water conservancy power to digital construction.
System composition diagram
特徵
Stability: Watchdog design ensures stable operation of the system
Adopt high-performance industrial-grade wireless module: wide temperature design, high and low temperature resistance, and strong electromagnetic interference resistance.
Low power consumption design: supports multiple working modes (real-time call, manual button, automatic measurement and reporting, strong compatibility, automatic change of acquisition frequency according to threshold);
Rich interfaces: water level, flow, water quality, meteorology and other customized sensors can be connected at the same time (the number of sensors can be customized)
Local configuration mode: supports various external screens, keyboard configuration modes, serial port configuration mode, and USB export configuration;
Applicable scenarios: Adapt to various harsh scenes and add Beidou modules to achieve full signal coverage without blind spots
Remote configuration: support remote parameter configuration and remote program upgrade.
Customized program: Provide customized protocols, hardware, software customization and other services
Comply with regulations
SL651-2014 Hydrological Data Monitoring Communication Protocol
SL180-2015 "Telemetry Terminal for Hydrological Automatic Measurement and Reporting System Equipment"
SZY206-2016 "Water Resources Detection Data Transmission Protocol - SZY206-2016"
Water Resources Monitoring Data Transmission Protocol (SL/T427-2021)
Key Features
1. Support capture, collection, transmission, reporting, warning, storage, display, export and on-site data reading
2. Support local display function: water temperature, water level, flow rate, water quality, snapshot pictures, instantaneous flow, total cumulative flow
3. Support mobile phone and PC to remotely query current rainfall, water level, water volume, water quality and other sensor data
4. Support low voltage, water level, flow rate, flow high and low thresholds, and can automatically adjust data collection, storage, and transmission frequency according to the triggered threshold
5. Support SIM card communication fee expiration reminder, and automatically send reminder messages 30 to 3 days in advance
6. Support WeChat to view data and WeChat to remotely configure RTU parameters
7. Support remote query of local historical data
8. Support on-site use of USB configuration parameters
9. Support on-site screen button configuration parameters
10. Support battery voltage reporting function
11. Support picture capture function
12. Support local manual setting function
13. Support automatic switching between Ethernet and 4G communication
Technical Parameters
| parameter | Performance Indicators | Remark | ||
| Receive signal sensitivity | -127.6dBm | |||
| Transmit power | ≥39dBm | |||
| Carrier suppression | ≥30dBc | |||
| Modulation Phase Error | ≤3° | |||
| Positioning/communication | Positioning and communication success rate: ≥95% | Without obvious interference | ||
| Lock Time | Cold start first capture time: ≤2 s | |||
| Lost lock and recapture time: ≤1 s | ||||
| RNSS parameters | Input frequency | BDS:B1,B2,B3,B1I,B2I,B1C,B2a GPS:L1,L2,L5 | ||
| Data update rate | 1Hz | |||
| Time to First Fix | Cold start time: | ≤35s | ||
| Hot start time: | ≤2s | |||
| Recapture time: | ≤2s | |||
| Positioning accuracy | level | ≤5m | Open space | |
| Elevation | ≤10m | |||
| Speed measurement accuracy | 0.1m/s | |||
| Sensitivity | capture | -144dBm | ||
| track | -159dBm | |||
| Other parameters | Serial Port | Supports multiple 485 and RS232 interfaces; supports 2-channel 4-20mA output and 2-channel 4-20mA analog acquisition interfaces; supports 2-channel pulse/switch signal acquisition; | ||
| Serial port baud rate | 4800~115200bps | Factory default 9600bps | ||
| 電源範圍 | 9V~24V | |||
| Power consumption | Working current <5.5 mA @ DC12V Standby current <0.6mA @ DC12V | |||
| show | Support local/remote display | |||
| storage | 512MB, supports storing one piece of data per minute and can store data for more than 3 years | |||
| Dimensions | Length: 164mm, Width: 94mm, Thickness: 37mm | |||
| sensor | Supports multiple sensors (water level, flow rate, water quality, meteorology, vibrating string and other custom sensors) | |||
| Early warning function | Supports water level, flow rate, high and low alarms. By setting WeChat openid in RTU, WeChat alarm messages can be pushed to designated users. | |||
| Supports low voltage, water level, flow rate, high and low flow thresholds, and can automatically adjust data collection, storage, and transmission frequency according to the triggered thresholds; | ||||
