Digital Modem for Distributed Data Acquisition and Control Systems Used in Intensive Fruit Farming
- Resource Type
- Conference
- Authors
- Visan, Daniel Alexandru; Lita, Adrian Ioan; Mazare, Alin Gheorghita; Ionescu, Laurentiu Mihai; Lita, Ioan
- Source
- 2018 41st International Spring Seminar on Electronics Technology (ISSE) Electronics Technology (ISSE), 2018 41st International Spring Seminar on. :1-4 May, 2018
- Subject
- Components, Circuits, Devices and Systems
Engineered Materials, Dielectrics and Plasmas
Fields, Waves and Electromagnetics
Modems
Data acquisition
Control systems
Quadrature phase shift keying
Oscillators
- Language
- ISSN
- 2161-2536
The aim of this paper is to present the results regarding the simulation and implementation of a digital modem that is intended to be integrated in multipoint data acquisition and control systems which are used for intensive fruit farming applications. For increased efficiency the proposed design is based on the well-known quadrature phase shift keying technique (QPSK). The improved architecture of the modulator and demodulator that compose the modem ensures a very good robustness to the external perturbations allowing transmission speeds of around 250 kbit/s at signal-to-noise ratios above 5 dB. The novelty of the proposed work is given mainly by the particular development of the modem. In comparison with classical solutions, the proposed approach relying on spectral efficient and synchronous operated communication modules in conjunction with the advantages offered by the multipoint data acquisition and control methods allows a significant increasing of the efficiency and sustainability for the intensive fruit growing systems.