Design of a Multisensing Control System

Abdalla A. Osman; Abdulrasoul J. Alzu baidi; Ali M. Abdelrahman

Abdalla A. Osman School of Computer Science and Information Technology, Wad Medani Ahlia College, Medani, Sudan
Abdulrasoul J. Alzu baidi Dept. of Electronic Engineering Faculty of Engineering, Sudan University for Science and Technology, Khartoum, Sudan.
Ali M. Abdelrahman 3Dept. of computer Engineering, Faculty of Engineering and technology, University of Gezira, Medani, Sudan

Abstract

The goal of this paper is to design a reconfigurable

multisensing control system. The implemented design tools are

based on static random access memory field programmable grid

array (SRAM FPGA) circuit board and a very high speed

integrated circuit hardware description language (VHDL). The

design steps start with software development which consists of

HDL processes where V HDL program that describes the

architectural behavior of the multisensing control system. An

HDL synthesis is the second step, which converts the design in

behavioral description file into gates. These steps are followed by

implementation techniques and downloading the design from PC

onto FPGA via a joint test action group (J TAG) cable. Different

type of sensors; namely two ultrasonic, smoke detector, water

level switch, thermostat, and light detector are connected to the

inputs of the programmed FPGA and activated to test the design.

The results show that the overall average delay timing between

inputs to outputs is equal to 6.437 ns which is relatively small as

compared with delay time at sensors and 1/0 modules. Therefore,

it can be clearly stated that the speed of control is limited by

sensors and 1/0 modules rather than the processing performance

of the proposed design. This is a stark contrast to traditional

control system where the processing performance is typically the

limiting factor. Thus the use of FPGA and V HDL to deploy multi

sensing control system efficiently improves its reliability,

flexibility, and real time data processing. Finally, it can be

concluded that the proposed multisensing control system can be

effectively implemented in so many application areas including

building security, home automation, robot activities, airports and

industry control systems.

References

Cedcc (2008), additional benefits of VHDL.
URL: http://www.cedcc.psu.edu/ee497f/rassp10/sld017.htm
NI(2007), based control: millions of transistors at your
command.
URL:http://zone.ni.com/devzone/cda/tut/p/i d/3357
Libaba(2008), Water Level Switch.
URLhttp://www.alibaba.com/product-
gs/201606290/Water Level Switch.html
Sinclair Ian(2001), Sensors and Transducers, Butterworth-
Heinemann.
Vijay Shonil (2006), Low- Cost FPGA Based for Pothole
Detection on Indian Roads, Master of Technology, Indian
Institute of Technology, Bombay.
URL:http//www.it.iitb.ac.in/—shonil vijay/lstage.pdf
wikipedia(2007), Smoke Detectors Alarms.
URL:http://www.wikipedia.com/smoke
detector/sarticles
Xilinx (2006), Programmable Logic Design Guide, Xilinx.
Xilinx (2007), Spartan-3A FPGA Starter Kit Board User
Guide, Xilinx