Abstract: A cache device includes a cache module, which comprises a sensor data access interface, a sensor data acquisition module and a driver library. The sensor data access interface receives a data request of back-end sensors from a front-end monitoring system. The sensor data acquisition module inquiries the sensors for the sensor data in accordance with the received request, receives and saves sensor data from the sensors, and replies the sensor data to the monitoring system through the sensor data access interface. The driver library includes at least one driver program, the sensor data acquisition module reads the sensors via executing the driver program, wherein, the driver library selects a corresponding communication protocol which is used by the inquired sensors for the executed driver program to use thereto.