Papers by mostefa Ghassoul
In the article "Temporary step-wise cyclic operation controlled by DCS to mitigate fouling in RO ... more In the article "Temporary step-wise cyclic operation controlled by DCS to mitigate fouling in RO water desalination" published in vol.
Fuel communications, Mar 1, 2021
Abstract Previous studies have shown that sun tracking systems using single axis or dual axes tra... more Abstract Previous studies have shown that sun tracking systems using single axis or dual axes tracking harvested more energy than fixed panels. Most of those studies were based on the light dependent resistors (LDR) with two or four LDRs depending whether single axis or dual axes is used. There are few concerns regarding those schemes. Because the LDRs are mounted on the same panel, they are continuously tracking the sun. As a result, their auxiliaries are drawing high currents; which means unnecessary consuming energy because of the continuous low speed rotation with many starts-stops; on top of this the heating problem due to high current consumption. Using LDRs only detects voltages not power whereas solar energy depends mainly on current where current is directly proportional to irradiation. As a result, and based on previous study, only about 85% of net energy is saved. They also suffer from the problem that each panel has got its own tracking. This study addresses those issues. The system is based on a PILOT-PANEL scheme, each equipped with a light to frequency converters (LTF). The advantage of LTF is that its output frequency is proportional to the irradiation which means proportional to power. The PILOT is small rod with its top in the W shape, where the first LTF is mounted on middle peak of the shape. The rod is driven by a micro-motor. The second LTF is mounted on the PANEL. The PILOT continuously tracks the sun. Every time the PILOT moves to a new position, a microcontroller reads both LTF's frequencies and compares them. If the difference is less than a pre-set value, the PANEL stays in the current position and the PILOT continues its tracking course. If the difference is bigger than the offset, the PANEL aligns itself with the PILOT. This process repeats itself during the course of the day. At the same time, another offline altitude angle tracking system comes into play. Because the range of the altitude angle in Bahrain is in the region of 35° between summer and winter, the microcontroller is programmed to move between four and eight time a year in steps of about 9°The technique has shown the extraction of 98.36% of continuous tracking with minimum energy consumption. This is certainly better than previous studies where the harvested energy is in the region of 85%. If continuous tracking represents 100%, at 1000 Hz (1.1 µW/cm2) offset, the extracted energy (as a percentage) was calculated to be 98.36%, at 4000 Hz (4.4 µW/cm2) offset, the energy was 95.41% and at 8000 Hz (8.8 µW/cm2) offset, the extracted energy was 79.9% and for fixed panel, it would be about 60%.
IntechOpen eBooks, Feb 17, 2021
Microcontrollers are used in almost any applications that come across one'smind, from small contr... more Microcontrollers are used in almost any applications that come across one'smind, from small control applications such as home appliances to aerospace. Microcontroller-based controllers are cost-effective and flexible to modify the design to meet the requirement for any control of any industrial plant. Microcontrollers do not require external hardware interface, memories, counter/timers, and ADCs, because they are all integrated inside the chip. Those controllers could be programmed online and do not require any backup memories except for big applications. This chapter presents the implementation of the three-term PID controller using a Microchip PIC18F452 microcontroller. To read data into the controller, a 10-bit integrated ADC is used; and to read data out of the machine, an external 12-bit serial DAC is used. Before programming the PIC microcontroller, the task to be tested could be off-line using a software simulator to make sure that it is working according. When that is the case, it could be then fired into the controller on-line in a mater seconds. Not only that, if the user decides to use different algorithm, he only programs the controller again online.
American journal of embedded systems and applications, 2019
Supervisory control and data acquisition are well established control and visualization systems i... more Supervisory control and data acquisition are well established control and visualization systems in industry. SCADA systems are DCS, PLC, soft PLC, industrial computer or microcontroller based. Some of those types of control are suitable for certain industries and are not for others. DCS is suitable in process control such as chemical, petrochemical, pharmaceutical industry and alike. PLCs are more suitable for food industry, beverages, car industry etc. Microcontrollers are emerging as a competitive option in small open SCADA system. All those types of control are based on data sharing using different types of networks such as Fieldbus, Profibus, Modbus and high speed ethernet. Those nets are interconnected using hard cabling which renders the communication distance very limited. One option is the use of public services such as internet but the risk is too high due to hacking, sabotage just to name few. This is demonstrated by the various conferences held over the world discussing protective ways against such practices. To overcome those problems including the cabling problem, one can call upon wireless communication with the aid of microcontroller and a SMART PHONE. This paper presents the design of a remote embedded SCADA system based on a 32 bit Microchip microcontroller. The controller has three main tasks to carry out. It controls a heat exchanger rig. It drives a multimedia graphic expansion board and it communicates with the SMARTPHONE using GSM where it interacts with the process either in normal mode or emergency mode. The proposed scheme has several advantages. It can communicate to any user independent of distance and time. It could be easily customized to allocate small and probably middle industry. On top of the cost effectiveness, the system could be expanded in local network to accommodate more complex applications.
InTech eBooks, Sep 8, 2014
Energy Reports, Nov 1, 2018
Die Dokumente auf EconStor dürfen zu eigenen wissenschaftlichen Zwecken und zum Privatgebrauch ge... more Die Dokumente auf EconStor dürfen zu eigenen wissenschaftlichen Zwecken und zum Privatgebrauch gespeichert und kopiert werden. Sie dürfen die Dokumente nicht für öffentliche oder kommerzielle Zwecke vervielfältigen, öffentlich ausstellen, öffentlich zugänglich machen, vertreiben oder anderweitig nutzen. Sofern die Verfasser die Dokumente unter Open-Content-Lizenzen (insbesondere CC-Lizenzen) zur Verfügung gestellt haben sollten, gelten abweichend von diesen Nutzungsbedingungen die in der dort genannten Lizenz gewährten Nutzungsrechte. Terms of use: Documents in EconStor may be saved and copied for your personal and scholarly purposes. You are not to copy documents for public or commercial purposes, to exhibit the documents publicly, to make them publicly available on the internet, or to distribute or otherwise use the documents in public.
This paper describes the design of a small train controller based on the microchip PIC32 32 bit 3... more This paper describes the design of a small train controller based on the microchip PIC32 32 bit 32MX360F512L microcontroller, mounted on PIC32 starter kit, to control a small electric train using the MATLAB fuzzy logic tool together with MPLAB- MATLAB blocksets developed by Kerhuel (1). Though the controller has got 16 analogue to digital converter channels, it has no digital to analogue converters (DAC). This has led to the use of an external SPI serial MCP 4921 single channel DAC developed by microchip as well. The only currently available SIMULINK blocksets are developed for 16 or 32 bit PIC controllers. 16 bit PICs (DSPIC30xxx and DSPIC33xxx) were not used in this project because when implementing MATLAB fuzzy logic algorithm with a high number of rules (more than five rules), this requires larger stack memory which was not available on both chips. This lead us to use The PIC32 controller, because of its relatively big stack memory.
Springer eBooks, 2010
This paper presents the design of a microchip PIC 18F452 micro controller based tracking solar en... more This paper presents the design of a microchip PIC 18F452 micro controller based tracking solar energy system, where the extracted solar energy is optimized.
Lecture notes in electrical engineering, Nov 8, 2014
This paper presents a SCADA system based on Siemens WINCC implemented on a Web server to drive an... more This paper presents a SCADA system based on Siemens WINCC implemented on a Web server to drive an Allen Bradley PLC to control temperature in two tanks, the first tank simulates a tank for collecting oil from several locations with different temperatures, and the second tank simulates an oil tank which is heated and used to defreeze the pipeline during winter. A tuned cascade PID is used to control the process. This has two advantages; firstly, this controller saves on fuel consumption and secondly, it eliminates the effect of feed tank temperature. The system could be controlled locally or remotely through the web server. The system could also send text messages using GSM to an IPHONE.
InTech eBooks, Sep 26, 2012
Lecture Notes in Electrical Engineering, 2014
This paper presents a SCADA system based on Siemens WINCC implemented on a Web server to drive an... more This paper presents a SCADA system based on Siemens WINCC implemented on a Web server to drive an Allen Bradley PLC to control temperature in two tanks, the first tank simulates a tank for collecting oil from several locations with different temperatures, and the second tank simulates an oil tank which is heated and used to defreeze the pipeline during winter. A tuned cascade PID is used to control the process. This has two advantages; firstly, this controller saves on fuel consumption and secondly, it eliminates the effect of feed tank temperature. The system could be controlled locally or remotely through the web server. The system could also send text messages using GSM to an IPHONE.
International Journal of Emerging Technology and Advanced Engineering
Flow meters are extremely important in industry. There are many types of flow meters. One of them... more Flow meters are extremely important in industry. There are many types of flow meters. One of them is one based on Hall effect whose output is modulated square wave which is difficult if not impossible to be caught by most the digital controllers such as DCS, PLC and alike. This paper presents an electronic interface which addresses this problem where it could solve any analog interface almost to any digital controller. The design first signal conditioned the output of the Hall effect sensor, then converts it into voltage which is also signal conditioned to limit the output in the range of 0-5V for 55-550Hz input (1-10L/min). This signal is then converted to 4-20mA current which could easily be read by any digital controller such as PLC, DCS, RTU. Keywords—Flow meter, Hall effect, frequency to voltage converter, voltage current converter
American Journal of Embedded Systems and Applications, 2019
Supervisory control and data acquisition are well established control and visualization systems i... more Supervisory control and data acquisition are well established control and visualization systems in industry. SCADA systems are DCS, PLC, soft PLC, industrial computer or microcontroller based. Some of those types of control are suitable for certain industries and are not for others. DCS is suitable in process control such as chemical, petrochemical, pharmaceutical industry and alike. PLCs are more suitable for food industry, beverages, car industry etc. Microcontrollers are emerging as a competitive option in small open SCADA system. All those types of control are based on data sharing using different types of networks such as Fieldbus, Profibus, Modbus and high speed ethernet. Those nets are interconnected using hard cabling which renders the communication distance very limited. One option is the use of public services such as internet but the risk is too high due to hacking, sabotage just to name few. This is demonstrated by the various conferences held over the world discussing protective ways against such practices. To overcome those problems including the cabling problem, one can call upon wireless communication with the aid of microcontroller and a SMART PHONE. This paper presents the design of a remote embedded SCADA system based on a 32 bit Microchip microcontroller. The controller has three main tasks to carry out. It controls a heat exchanger rig. It drives a multimedia graphic expansion board and it communicates with the SMARTPHONE using GSM where it interacts with the process either in normal mode or emergency mode. The proposed scheme has several advantages. It can communicate to any user independent of distance and time. It could be easily customized to allocate small and probably middle industry. On top of the cost effectiveness, the system could be expanded in local network to accommodate more complex applications.
Energy Reports, 2018
Die Dokumente auf EconStor dürfen zu eigenen wissenschaftlichen Zwecken und zum Privatgebrauch ge... more Die Dokumente auf EconStor dürfen zu eigenen wissenschaftlichen Zwecken und zum Privatgebrauch gespeichert und kopiert werden. Sie dürfen die Dokumente nicht für öffentliche oder kommerzielle Zwecke vervielfältigen, öffentlich ausstellen, öffentlich zugänglich machen, vertreiben oder anderweitig nutzen. Sofern die Verfasser die Dokumente unter Open-Content-Lizenzen (insbesondere CC-Lizenzen) zur Verfügung gestellt haben sollten, gelten abweichend von diesen Nutzungsbedingungen die in der dort genannten Lizenz gewährten Nutzungsrechte. Terms of use: Documents in EconStor may be saved and copied for your personal and scholarly purposes. You are not to copy documents for public or commercial purposes, to exhibit the documents publicly, to make them publicly available on the internet, or to distribute or otherwise use the documents in public.
2001 Conference Proceedings of the 23rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society
2011 IEEE International Conference on Computer Science and Automation Engineering, 2011
This paper describes the design of a small train controller based on the microchip PIC32 32 bit 3... more This paper describes the design of a small train controller based on the microchip PIC32 32 bit 32MX360F512L microcontroller, mounted on PIC32 starter kit, to control a small electric train using the MATLAB fuzzy logic tool together with MPLAB- MATLAB blocksets developed by Kerhuel (1). Though the controller has got 16 analogue to digital converter channels, it has no digital to analogue converters (DAC). This has led to the use of an external SPI serial MCP 4921 single channel DAC developed by microchip as well. The only currently available SIMULINK blocksets are developed for 16 or 32 bit PIC controllers. 16 bit PICs (DSPIC30xxx and DSPIC33xxx) were not used in this project because when implementing MATLAB fuzzy logic algorithm with a high number of rules (more than five rules), this requires larger stack memory which was not available on both chips. This lead us to use The PIC32 controller, because of its relatively big stack memory.
Technological Developments in Networking, Education and Automation, 2010
This paper presents the design of a microchip PIC 18F452 micro controller based tracking solar en... more This paper presents the design of a microchip PIC 18F452 micro controller based tracking solar energy system, where the extracted solar energy is optimized.
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Papers by mostefa Ghassoul