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ARM Based Automatic Meteorological Data Acquisition System

P.Thamarai, B.Karthik

Aimed at the current situation that the domestic automatic meteorological data acquisition system is almost based the use of foreign products, a design method of multi-channel meteorological data acquisition system was given which based on ARM and CAN Bus. In the design, it fulfills the acquisition requirements of the analog signals, digital signals and intelligent sensor data through a combination of hardware and software technologies. In order to improve system’s real-time answering capability and multi-task processing capability, it is uses “main collector + external bus + sub-collector + sensors + peripheral equipment” in structure design of hardware. CAN bus is used for communication between the sub-collector and main collector. At the same time, it is completely coded using Embedded C. The system makes use of GPRS modem to send the meteorological data to the server where it can be monitored. The meteorological data is also sent to a pre registered cell phone number. All the components are connected using cables so as to enable the efficient transmission of data.