2 research outputs found
Design of a Multisensing Control System
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
Thermocouples Technology and Applications A review
This paper gives an intensive survey of thermocouples. In particular, it describes the principles of operation and compares between different types of junctions. It provides the major advances in thermocouples in conjunction with hardware and software for PC interfacing. Also it summarizes the main advantages and disadvantages of thermocouples. Finally the paper highlights the important areas of industrial applications.