Progetto per lo sviluppo di un’applicazione Android e di un adattatore seriale WiFi per la configurazione ed il controllo del registratore sismico REF TEK 130S-01

Abstract

Seismic instrumentation is fundamental for seismological science. It is thanks to a network of instruments positioned on a specific area and the collection of frequency and amplitude parameters, related to the seismic event, that it is possible to trace the epicenter of the earthquake. Over the years there have been various evolutions both by the seismic sensor used to transform the movement of the earth into a variable parameter (e.g. mechanical movement, electrical voltage) and by the seismic recorder responsible for storing and making the detected information usable.
Further progress has been achieved through the digital processing of seismic data allowing the creation of seismic stations that can record on hard disk and remotely transmit a considerable amount of information for post-processing. A seismic station that contains the characteristics described above is the REF TEK 130S-01 (hereinafter referred to as 130S-01).
The 130S-01 has six input / output connectors: two connectors for seismic channels input, a terminal connector for configuration and control, a network connector that combines Ethernet and serial PPP for network access, an external power connector and a connector for the GPS receiver. An LCD display allows the user to monitor the status of various subsystems within the 130S-01 without a terminal device connected. Configuration, control and status monitoring are performed with an iPod touch or iPhone using a WiFi serial adapter with the Field Setup Controller (iFSC) software available as a free download from the Apple store. By analyzing the communication protocol between the iFSC app and the WiFI-serial converter, an application for the Android environment was developed (hereinafter referred to as the RTManager app). At the same time, this analysis allowed the hardware / software development of a low-cost WiFi-serial converter created through the use of an embedded Linux system based on an ARM processor.