Warsito, Warsito (2017) ANALYSIS AND REDUCTION OF TIME SHIFT BETWEEN SENDING AND RECEIVING ON DATA ACQUISITION USING SMS GATEWAY SYSTEM. Journal of Theoretical and Applied Information Technology, 95 (20). pp. 5340-5347. ISSN 1992-8645

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Abstract

This paper presents the data acquisition system of water level measurements using short message service (SMS) gateway at frequency of Global System for Mobile communication (GSM) ranging from 900 MHz to 907.5 MHz. We use the HC-SR04 ultrasonic transducer with a frequency of 40 kHz and a measurement range up to 5 m for water level detection. The output of the water level measurement are shown in LCD monitor, stored in microSD, and transferred to mobile phone by SMS gateway system. The data transmission using SMS gateway is realized using two models, namely the scheduled and requested transmission. The analysis of the data transmission using SMS gateway shows the time shift due to the transmission process for about 25 seconds. The modem processing time called the time-shift occurs due to the processing, transmition, and receiving data into information. To reduce this time-shift, we designed the commands in the program by creating and transmitting to a single information model. The average time reduction of time-shift decreases to about 4.15 seconds for 30 mobile phone number. The overall analysis of data acquisition system shows good results and efficient.

Item Type: Article
Uncontrolled Keywords: Data Acquisition, Water Level, Real Time, On Line, Sms Gateway
Subjects: Q Science > QC Physics
Divisions: Fakultas Matematika dan Ilmu Pengetahuan Alam (FMIPA) > Prodi Fisika
Depositing User: WARSITO
Date Deposited: 16 Nov 2017 06:48
Last Modified: 16 Nov 2017 06:48
URI: http://repository.lppm.unila.ac.id/id/eprint/5655

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