Warsito, Warsito and GURUM A. PAUZI, GURUM A. PAUZI and AMIR SUPRIYANTO, AMIR SUPRIYANTO and LAZUARDI UMAR, LAZUARDI UMAR and SW Suciyati, SW suciyati (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 communic ation (GSM) ranging from 900 MHz to 907.5 MHz. We use the HC-SR04 ultrasonic transducer with a f requency of 40 kHz and a measurement range up to 5 m for water level detection. The output of the wa ter 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, na mely the scheduled and requested transmission. The analysis of the data transmission using SMS g ateway 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, tran smition, and receiving data into informatio n. To reduce this time-shift, we designed the commands in the program by creating and transmitting to a singl e 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
Subjects:	Q Science > QC Physics
Depositing User:	M.Si. Sri Wahyu Suciyati
Date Deposited:	21 Jun 2018 02:32
Last Modified:	21 Jun 2018 02:32
URI:	http://repository.lppm.unila.ac.id/id/eprint/7398

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