Drainage pipe network water quality monitoring system: real-time monitoring of the water quality status of the drainage pipe network,Optimize and maintain the citydrainage facilities[Model: TW-GWS06, IoT integrated device, Tianwei Environment supports customized services]In the current accelerated urbanization process, the drainage network, as the "underground lifeline" of the city, directly affects the water quality of the water environment and the operational efficiency of drainage facilities. The water quality monitoring system of the drainage network provides key support for the optimization and maintenance of the network through real-time perception throughout the entire process. The system deploys high-precision sensors at key nodes of the pipeline network, which can synchronously track core indicators such as chemical oxygen demand (COD), ammonia nitrogen, pH value, suspended solids, and conductivity. Its anti clogging design can cope with the impact of debris in sewage, and the waterproof and corrosion-resistant shell ensures long-term stable operation in humid and high salt environments. The data is uploaded in real-time to the management platform through the wireless transmission module, and the system automatically generates a heat map of water quality changes and abnormal warning reports. When the water quality indicators in a certain area continue to exceed the standard, the pollution source can be quickly located and the leakage point of the pipeline network can be traced; Combined with water flow velocity data, it can also evaluate the risk of sedimentation in the pipeline network and guide the dredging operation plan. This closed-loop management of "monitoring warning disposal" not only extends the service life of drainage facilities, but also helps cities build resilient drainage systems by reducing sewage overflow and groundwater pollution.

1、 Product Overview
The low-power collection microsystem of the pipeline network directly transmits JSON data to the designated server through 4G and supports MQTT protocol transmission.
Other formats of data are transmitted to our company's cloud platform via 4G. Our company provides an HTTP interface, and other platforms obtain data through this interface.
The built-in 8GB TF card can store the read data in the memory card.
The baud rate of each serial port communication can be modified through commands, and the required sensor parameters can also be added, modified, and deleted through commands.
2、 Functional Features
1. Equipped with a built-in 3.6V 152AH lithium battery, ensuring continuous operation for 3 years.
2. IP68 waterproof rating, no need to worry about pipeline swelling.
3. There are two 485 interfaces, one for device configuration and one for sensor reading
4. Supports Modbus RTU sensor reading and data saving function
5. The serial port baud rate can be independently modified
6. The sensor communication port supports up to 32 nodes
3、 Specification parameters
Working voltage: 3.6V with built-in lithium battery
Product size: 204x82x162mm
Usage environment: Temperature: -40-85 ° C, Humidity: 5% -95%
Communication type: RS485
Communication protocol: Modbus RTU protocol
Communication distance: 300 meters
Baud rate: 1200-115200bps, default 9600 8N 1
Protection level: RS-485 interface with 600W lightning surge protection per line, ± 15KV ESD protection
4、 Sensor parameters
| serial number |
sensor type |
measurement range |
Measuring principle |
measurement accuracy |
configuration |
| 1 |
temperature |
0~50℃ |
High precision digital sensor |
±0.3℃ |
√ |
| 2 |
conductivity |
0~5000uS/cm,0~10000uS/cm |
Contact electrode method |
± 1.5% |
√ |
| 3 |
pH |
0~14(ph) |
Electrochemistry (salt bridge) |
± 0.1PH |
√ |
| 4 |
dissolved oxygen |
0~20mg/L |
Fluorescence lifetime method |
± 2% |
√ |
| 5 |
ammonia nitrogen |
0-1000.00mg/L (default) 0-1000mg/l/(customizable) |
Ion selective electrode method |
10% of the reading, ± 0.5 ℃ |
√ |
| 6 |
turbidity |
0~40NTU (optional) |
scattered light method |
± 1% |
√ |
| 7 |
COD |
0~1000mg/ L |
UV254 absorption method |
±5% |
|