Drainage pipe network water quality monitoring system: supports minute level data collection frequency, captures water quality sudden change events [model recommendation: TH-GWS04, IoT integrated device, cloud environment Tianhe supports customized services] The drainage pipe network water quality monitoring system achieves precise capture and rapid response to water quality sudden change events through a combination of minute level high-frequency sampling, intelligent algorithm identification of anomalies, and multi terminal real-time warning technology. In sensitive areas such as downstream industrial parks and drinking water sources, the sampling interval can be compressed to 10-30 seconds/time. For example, a downstream monitoring point in a chemical industrial park is set to sample every 30 seconds. When a company suddenly illegally discharges high concentration organic wastewater, the system completes two water sample collection and analysis within one minute, quickly capturing the abnormal changes in COD from normal 20mg/L to 150mg/L, which is several hours earlier than the traditional "once a day sampling" method. Pre set the threshold for each indicator exceeding the standard (such as pH<6.5 or>8.5, dissolved oxygen<5mg/L), and trigger a warning when the monitoring data exceeds the threshold. Set a threshold for the rate of change of indicators (such as a decrease of 0.5 in pH value within 10 minutes and an increase of 50 NTU in turbidity within 30 minutes). Even if the data does not exceed the threshold, if the fluctuation amplitude is abnormal in a short period of time, a warning will be triggered. For example, after a rainstorm, the water turbidity rises slowly (10 NTU in one hour) due to rain erosion, and the system judges it as normal environmental fluctuation; The chemical leak caused a 40NTU increase in turbidity within 10 minutes, and the system quickly identified it as a pollution anomaly.

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 a maximum of 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