Design And Implementation Of Common Sensor System Based On The Android Platform

With the rapid development of information technology, the Internet has entered the era of mobile Internet, cloud computing and networking technology has been widely used in various scenarios, the real impact and change people’s lives. Realization of Things technology is mostly based on technology of sensor, and current mobile intelligent terminal system basic support certain types of sensors such as gravity sensors, acceleration sensors. But how convenient to add and remove sensors on a mobile terminal system and efficient processing of various types of sensors to accommodate the different scenarios needs is a question worth pondering.In this paper, take the mobile application framework of smart oilfield as an example, which the use of mobile intelligent terminal as a carrier operational framework, combined with the underlying Android architecture to design and implementation of a common sensor module system applicable to the wisdom of oilfield mobile application framework and other scenarios, it can effectively reduce system costs, improve system integration. And use the Android application to verify the feasibility and correctness of the system. The main work is as follows:Firstly, in-depth study of the Android system architecture and design the sensor module which based on Android’s four-tier structure. It includes the design and implementatipn of common sensor system kernel level driver module, the design and implementation of common sensor system hardware abstraction layer module, the design and implementation of common sensor system application framework layer module which three important parts. Kernel level driver module processed and loaded different types of sensor data into the unified input subsystem, followed by encapsulation, data expansion, scenarios and types of sensor of extensions by hardware abstraction layer module, to ensure the system’s versatility. Then later in the application framework layer provides a unified processing mechanism for a variety of complicated matters of sensors, which enhance the flexibility and versatility of the system. Finally, through the digital temperature and humidity sensor AM2321to verified the correctness of the common sensor system and achieved the desired goals.