Topology, protocols and databases in Bluetooth 4.0 sensor networks

In this paper, we have investigated a variety of network topologies with devices that support Bluetooth technology. It is shown that it is necessary to use a data transfer gateway for access to the global network. A protocol allowing form queries to the modules and receive answers from them is developed to provide the data exchange. We consider solution for the problem of interaction with counters and data processing tasks. Besides, in the paper we propose technical diagrams for connecting the modules to various devices. Special software has been developed to store data received from the module. This software is for smart phones and uses the local device database. Information flocked from all devices is located in MySQL database with special structure. Particular attention is paid to the topology of the star, as well as to the interfaces of the connection using RS-232, RS-485 the pulse output. The point is that these topologies and interfaces provide reliable operation of the modules being developed and explored.