Data Automation for on-line Earthquake Precursory Signals Avishek Kumar 1 , Hirok Chaudhuri 2 1 M.Tech Student in Advanced Material Science & Technology, Department of Physics, NIT Durgapur 2 Assistant Professor, Department of Physics & Project Manager, Helium & Geothermal Exploration and Earthquake Precursor Project, NIT Durgapur E-mail:- kumar.avishek07@gmail.com, chaudhuri_hirok@yahoo.co.in Abstract -The paper presents the technical knowhow to build an automation software approach for monitoring, recording, and real time analysis of earthquake precursory signals. Three laboratories in different locations such as Bakreswar hot spring site, West Bengal, Baratang mud volcano site, Andaman & Nicobar Islands, and Tattapani hot spring site, Jammu & Kashmir have been developed so far to detect earthquake precursory signals. The various instruments in each of the laboratories include Alpha Guard radon monitor, Micro-gas chromatograph, Barasol radon monitor. All of these instruments are connected through a serial interface (RS-232) to the local server computer installed at each of the laboratories. Here we discuss in detail about the software algorithm in which automatic data acquisition from the connected instruments to the local server computer and automatic transmission of the stored data to the main server computer installed at NIT- Durgapur is done in real time. A web interface to the main server computer is also made. Using this web interface, a particular instrument of a particular laboratory can be selected. Time period (start date to end date) of the data to be accessed could be chosen and real time analysis of the data can be done. Keywords: Data automation, software, geochemical data, earthquake precursors 1. INTRODUCTION Monitoring of earthquake precursory signals is an important task as per as the study of earthquake phenomenon is concerned [1]. Our field laboratories are equipped with different instruments which continuously monitor earthquake precursory signals. Computer programmed automation system is nowadays preferred as the data recorded in the remote laboratories can be rapidly processed, and on time information delivery can be assured. In our present work a computerised automation system is proposed to automatically acquire signals from the various instruments and store and transmit data periodically. Geochemical signals are monitored continuously by the various instruments installed at the field laboratories. The recorded values by the various instruments is being acquired by the software automatically and stored in the computer system.. Our present paper focuses on the following key technologies:- 1. MATLAB. 2. RS- 232 interface. 3. JAVA interface. 4. FTP server module. 5. Windows operating system. 2. DATA AUTOMATION SYSTEM Here we have discussed the major parts of the data automation system to establish the algorithm for the software. Fig. 1 describes the complete data processing architecture. The proposed data automation system [2] has the following major parts:- 1. Data acquisition system 2. Data storage system 3. Data transmission system 4. Data presentation system Fig. (1)- Data processing architecture. 2.1 Data acquisition system The foundation of earthquake monitoring is the collection of experimental geochemical and physical data and subsequently analysing and determining a