An automatic control suitable for process level sensing and control was realized using the Ultrasonic sensor. This enabled the entire circuit to function as a threshold detector; thereby working as an ON and OFF switch. The proposed process level sensor was tested in real time application by using it to control the level of water in a tank fed by a single phase 1/2HP pump. Experimental performance results indicated that the device is quite suitable for the desired operation, since it maintained the set maximum and minimum levels of 100 litres and 10 litres respectively, by switching the pump on or off as required.
- Kingsley Ugochukwu Walter Ikpo Department of Electrical and Electronic Engineering, Petroleum Training Institute, Effurun Delta State, Nigeria
References
[1] Mittal, Yash & Varshney, Aishwary & Aggarwal, Prachi & Matani, Kapil & Mittal, Vinay. (2015). Fingerprint biometric based Access Control and Classroom Attendance Management System. 1-6. 10.1109/INDICON.2015.7443699. [2] Jack, K.E., Nwangwu, E.O., Etu, I., & Osuagwu, E.U. (2016). Design and Implementation of a Microcontroller-Based Water Level Control System with Seven Segment Display for Domestic and Laboratory Application. [[3] Jwaid Ali E, Clark S. and Ireson G. 2013 Understanding Best Practices in Control Engineering Education Using the Concept of TPACK IEEE Integrated STEM Education Conference 10 Mar. Google Scholar
Kingsley Ugochukwu Walter Ikpo, "Implementation of Process Level Control System" International Journal of Latest Technology in Engineering, Management & Applied Science-IJLTEMAS vol.10 issue 02, September 2021, pp.01-04 DOI: https://dx.doi.org/10.51583/IJLTEMAS.2021.10901
There is global need for the preservation of natural resources. Natural resources in the world are continuously decreasing due to manufacturing of the products and this has negative impact on the environment. Aggregates constitute large ratio by weight concrete production. Recently the approach is to research for alternative that will serve the purpose of the natural aggregates in concrete for sustainable construction. One approach to contribute to sustainable construction is to partially or totally replace natural aggregates. Pit gravel is a suitable material for replacement of aggregate in concrete production. Specific gravity as well as bulk density, porosity, Impact value, crushing value for both conventional aggregate and pit gravel were carried out. Workability, compressive strength and flexural strength properties of concrete produced with 100% conventional aggregate and pit gravel were carried out with a mix ratio 1:2:3 and water-cement ratio of 0.5 were examined and compared. The concrete was tested at 3, 7, 14 and 28 days’ hydration periods. The results showed that concrete with both conventional and pit gravel has a medium workability. The highest compressive strength at 28 days was 27.53N/mm2 for conventional aggregate concrete as compared to 26.61N/mm2 for pit gravel concrete. The highest flexural strength at 28 days was 5.73N/mm2 for conventional aggregate concrete as compared to 5.67N/mm2 for pit gravel concrete. The strength test results indicated that conventional aggregate concrete gave better strength compared to pit gravel concrete. The research recommends use of pit gravel to fully replace conventional aggregate in concrete.
- Agboola Shamsudeen AbdulazeezM.Tech Student, Abubakar Tafawa Balewa University Bauchi, Nigeria
- Mamman Adamu IdiAbubakar Tafawa Balewa University Bauchi, Nigeria
- Amina Omolola Suleiman M.Tech Student, Abubakar Tafawa Balewa University Bauchi, Nigeria
- Simdima Gabriel Gideon Maintenance Department Federal Character Commission Abuja, Nigeria
References
[1] Smith, T., and Maillard, P.-L. (2007). The Sustainable Benefits of Concrete Pavement. [2] Ismail Mohamed A. (2009). Study on the Properties of Palm Oil Fiber. Faculty of Civil Engineering Universti Teknologi Malaysia, 93. [3] Kulkarni P. P., Chavan P. G., Pagar C. B., (2016). Coconut Shell As Coarse Aggregate In Concrete International conference on recent Trends in Engineering and Science. [4] Sanjeev K., Ramesh C G., Blessen S. T., Priyansha M,(2016). Aggregate Replacement and Its Usefulness in Cement Concrete for Sustainable Development. A Study on Rubber, Jarosite and Sandstone Aggregates. [5] Salau M. A., Busari A. O., (2015). Effect of Different Coarse Aggregate Sizes on the Strength Characteristics of Laterized Concrete, 2nd International Conference on Innovative Materials, Structures and Technologies IOP Publishing IOP Conf. Series: Materials Science and Engineering. [6] Wade, Autade, Belhekar, Jadhav, & Sathe, (2017). To Study Characteristics of Concrete with Partial Replacement of Coarse Aggregate with Coconut Shell. International Research journal of Engineering and Technology. (IRJET). Pp. 1848- 1851. 4(4) 2017. Retrieved from http://www.irjet.net [7] British Standard 1377 part 2 (1970). Methods of determination Specific gravity of aggregate. BSI Publication British Standard Institution, London. [8] Neville, A.M. and Brooks, J.J. (1990). Concrete Technology. English Language Book Society (ELBS)/Longman. [9] British Standard 812 part 2 (1995). Testing aggregate part 2. Methods of determination of bulk density. BSI Publication British Standard Institution, London. [10] British Standard, (1983). Testing concrete; Method for determination of slump. BS 1881-102, BSI, Linfordwood, Milton Keynes MK14 6LE, U.K. [11] BS1881 – 116-117: 1983. Testing Concrete - Method for determination of tensile splitting strength. British Standards Institute, London [12] Code of practice for design and construction. (2013) Structural use of concrete —Part 1: Hong Kong Special Administrative Region [13] Abdulazeez, S.A. (2019). Durability properties of composite concrete made with waste glass powder and volcanic ash exposed to aggressive environment. Unpublished M.Tech. Thesis. Abubakar Tafawa Balewa University – Nigeria, 2019. [14] Neville, A.M. and Brooks, J.J. (1987). Concrete Technology. United Kingdom: Pearson Education Asia Pte. Ltd.
Agboola Shamsudeen Abdulazeez, Mamman Adamu Idi, Amina Omolola Suleiman, Simdima Gabriel Gideon "Suitability Assessment of Sabon Kaura Pit Gravel as Coarse Aggregate in Concrete Production" International Journal of Latest Technology in Engineering, Management & Applied Science-IJLTEMAS vol.10 issue 2, September 2021, pp.05-12 DOI: https://dx.doi.org/10.51583/IJLTEMAS.2021.10902
Fingerprint identification is no longer the preserve of crime detection or science fiction. It’s widely used in access control because it’s a very reliable straightforward verification method unlike the traditional lock systems, passwords which were found not to secure perfectly. The major reason for this study is to provide an advance security for such high end security applications. The aim of this study is to design an access control system using finger print biometric system. This is to grant access only to authorized persons. An emergency alarm is incorporated to deter an intruder trying to gain access.
- Page(s): 13-16
- Date of Publication: 29 October 2021
- Abutu Silas Department of Electrical and Electronic Engineering, Petroleum Training Institute, Effurun Delta State, Nigeria
References
[1] Mittal, Yash & Varshney, Aishwary & Aggarwal, Prachi & Matani, Kapil & Mittal, Vinay. (2015). Fingerprint biometric based Access Control and Classroom Attendance Management System. 1-6. 10.1109/INDICON.2015.7443699. [2] Umar, B.U, Olaniyi, O. M, Olorunyomi, J.A, (2016) Design And Development Of A Fingerprint Door Access Control System With A Buzzer Alarm, Proceedings of the International Conference on Science, Technology, Education, Arts, Management and Social Sciences (iSTEAMS Research Nexus).
Abutu Silas , "Access Control System Using Finger Print Biometric System" International Journal of Latest Technology in Engineering, Management & Applied Science-IJLTEMAS vol.10 issue 02, September 2021, pp.13-16 URL: www.ijltemas.in/DigitalLibrary/Vol.10Issue9/13-16.pdf