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http://dx.doi.org/10.12673/jkoni.2012.16.2.351

The implementation of the Remote Control and Measurement Systems using CDMA Modem  

Lee, Myung-Eui (Dept. of Information and Communication Eng., KUT)
Publication Information
Journal of Advanced Navigation Technology / v.16, no.2, 2012 , pp. 351-359 More about this Journal
Abstract
This paper deals with the design and development of the remote control and measurement systems using CDMA(Code Division Multiple Access) data modem. We propose a bi-directional data communication link without the public IP address in CDMA modem device by the TCP/IP packet and SMS(Short Message Service) communication. The remote control and measurement systems are implemented by a Telit WM-800 modem as DCE(Data Communication Equipment), and Atmel AT89C51 microcontroller as DTE(Data Terminal Equipment). The user application software for the control and measurement system user, and the firmware software of device drivers for peripherals such as a digital input/output device, AD/DAC(Analog to Digital/Digital to Analog Converter), LCD, and temperature/humidity sensor are written in Microsoft C and Keil C language respectively for further various applications. The experimental result of the proposed control and measurement systems implemented in this paper is evaluated via real-time experiments, which works well as designed.
Keywords
CDMA modem; SMS; Contol; Measurement; Microcontroller;
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