DTU itself has the advantages of wide network coverage, low tariffs, accurate and timely data transmission, etc. In the context of the continuous advancement of industrial informatization, the market demand for DTU is also increasing. However, many problems will occur during the use of DTU. For example, the DTU connection is unstable, which will cause the loss of data transmission and greatly affect project progress.
The DTU connection is unstable during actual application, mainly due to the following reasons:
1. Application in remote mountainous areas. The signal environment in remote mountainous areas is often very poor, and unstable DTU connections often occur. The countermeasures are to choose a high-gain antenna to increase the acceptance of network signals, or to install a serial data line and place the DTU in a place with strong network signals.
2. The network signal in the ring is too poor. For example, in underground parking lots, mountain libraries, etc. in cities, the shielding of obstacles makes the network signal poor. The solution is to extend the antenna to a place with good signal.
3. The parameter settings of DTU are incorrect. In areas with strong network coverage, incorrect parameter settings are the most common. Most manufacturers’ DTUs generally have DTUs that prevent disconnection. In practical applications, users can set the heartbeat packet interval smaller than the detection time to avoid disconnection.
4. Problems with the quality of the DTU itself. There are many DTU manufacturers on the market, and the quality of their products varies. Poor-quality DTUs have natural flaws in hardware and network settings. The solution is to buy high-quality products from reliable manufacturers.
The above four points are the application situations and solutions of unstable DTU connection, the actual situation, and detailed analysis.