FPGA implementation for humidity and temperature remote sensing system

This paper presents the hardware design and implementation of a remote sensing system for humidity and temperature in real time. The design based on using FPGA (Field Programmable Gate Array) for the hardware implementation of the controller circuit and GSM (Global System for Mobile) for remote monitoring. The controller circuit has been described using VHDL (VHSIC Hardware Description Language). The design has been simulated using ModelSim from Model Technology and implemented using Xilinx ISE 6.2i software tools. FPGA Spartan 3E starter kit from Digilent has been used for the hardware implementation of the controller circuit. The system offers low cost and user friendly way of 24 hours real-time remote monitoring for temperature and humidity using SMS (Short Messaging Service) messages.