The AI-based DAS integrated system classifies signals from excavation and vehicle passage events.
The AI-based DAS integrated system classifies signals from excavation and vehicle passage events., The AI-based DAS integrated system classifies signals from excavation and vehicle passage events.
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Hello everyone, today we're back at our distributed fiber optic vibration sensing field site. Due to recent rainfall, we've extended several hundred meters of fiber optic cable beyond the existing buried section. We've now installed our distributed fiber optic vibration sensing equipment—our DAS system—in the equipment room. We are now using a tablet to communicate with the device via 5G network, which transmits the displayed results in real time.
Due to the rain, the experimental scenario has changed slightly. We can first test whether the model we previously used to distinguish structural integrity remains applicable. For instance, in this scenario, we can still jump and observe the event displayed. Similarly, if we switch to another event—say, an excavation—it can also display that event. Building upon the previous model, we've added another capability: distinguishing vehicles.
When a vehicle passes by, we can detect it. Whenever a vehicle approaches this corner, it's about 70-80 centimeters from the fiber optic sensor. We can still detect this vehicle during that process. This proves that because we trained the model on new data while keeping the original structure consistent, the model still has strong extensibility.
