Infrastructure prefabricated part monitoring system and digital acquisition device

According to the infrastructure prefabricated part monitoring system and the digital acquisition devices provided by the invention, sensors mounted at specified positions in prefabricated parts can be converted into digital bus signals nearby through the digital acquisition devices, and then the digital bus is cascaded with the digital acquisition devices to form a bidirectional annular acquisition network; and digital buses at the two ends of the network are accessed to the waterproof wire hiding box and are connected with the data gateway, so that the data gateway can supply power to the digital acquisition device through the bus of the bidirectional acquisition loop and perform bidirectional acquisition on sensor data of the preset component. The system is high in integration level, convenient to install, high in field adaptability and low in comprehensive cost, digital, real-time, accurate and reliable sensing of the built-in sensor of the prefabricated part can be achieved, and effective support is provi