ABSTRACT
Due to the challenges posed by ‘‘Frisking Method,” the use of misplaced/hidden active cell phone detector is used to overcome such challenges. The threat posed by cell phones in correctional facilities and companies has caused companies to lose significant amounts of money. One very effective way of countering the dangers caused by the use of cell phones in correctional facilities and companies is through the use of misplaced/ hidden active cell phone detector. This detector is capable of detecting the presence of activated mobile phones from a distance of up to one meter. Using a varactor diode as input reactive component, a tuned circuit can be formed as input to a current depended operational amplifier to pick up cell phone frequencies ranging from 750MHz of 2G network to 3GHz of 4G network. The block diagram of the system was generated to give me a better understanding of the system function and help create interconnection within it. The design project is divided into eight blocks or units.The power supply unit, the RF/detector unit, the pre-amplifier unit, the voltage amplifier unit, the low pass filter unit, the voltage reference unit, The voltage comparator unit and the output unit. The circuit can detect the incoming and outgoing calls, even if the mobile phone is kept in the silent mode. The moment the Bug detects RF transmission signal generated from another mobile phone, it produces visual and audio alerts. The alerts continue until the signal transmission ceases. The phone detector can be effectively used in sniffing out hidden phones active and in use at prohibited areas – examination halls, churches, sitting courts, etc.
References
- Abdul R.A.Z (2021). Capacitor and capacitance. LAP LAMBERT Academic Publishing. 70-93.
- (Adel R, no date). The signal diode. Scribd, 1-8.
- Ally S.N & Nixon M. (2014). The use of mobile phones in university exams cheating: Proposed solution. International Journal of Engineering Trends and Technology (IJETT),17(1),14-17.
- Ardiyallah A et al (2023). Design and implementation of IoT Based Smart Lecture Attendance System at Mataram University of Technology, PILAR Nusa Mandiri: Journal of Computing and Information System, Vol 19, 1-8.
- Bukar B.A et al (2019). Design and analysis of a cell phone detector. Internatonal Journal of Computer, Engineering and Information, 6(1),33-41.
- Chester S (no date). Linear and Switching Voltage Regulator Fundamentals, Texas Instruments, 1-13.
- Coralie N, Raghav M & Christianlly C (2023). Potentiometer definition, types and examples. com.
- Cudjoe D (2014). Review of Generations and Physics of Cellphone International Journal of Information Science, 4(1), 1-7.
- Farhan S (2017). NPN Transistor: Working and Application (Explained).
- Linquip Team (2023). What is a Non-Polarized Capacitor? Types & Function. Linquip
- Maftunzada S.A.L (2022). The Structure and Working Principle of a Bipolar Junction Transistor (BJT). Physical Science International Journal, 26(11-12), 35-39.
- Mohamed G et al (2024). Varactor Diode: A Comprehensive Overviewof All Aspects. Research Gate, 1-10.
- Mose R & CBS F.S (2022). DC battery system. NetaWorld
- Mwango A.N (2016). Cell phone detector. University of Nairobi, Department of Electrical and Electronic Engineering. 1-42.
- Oke A.O, Falohun A.S & Adigun A.A (2016). The design and implementation of a mobile phone detector device with a frequency jamming feature. International Journal of Computer Applications, Volume 143. 15-19.
- Oluyamo S.S & Olusola O.I (2015). The use of operational amplifier in providing safety for electronic devices. Journal of nformation Engineering and Applications, 5(3), 23-28.
- Periyasamy M.M et al (2016). Effects of electromagnetic interference on functional usage of medical equipment by 2G/3G/4G cellular phones. Journal Of Advanced Research, 7 (5), 727-738.
- R. Verma (2015). Electronic components, Resistor. IETE Journal of Education, 5 (4),193-204.
- Rajkumar M et al (2017). Hidden active cell phone detector. IJSART,3(5),631-634.
- Sawsan E.A. & Mubarak D.A. (2016).Polar and non-polar capacitors effect on photovoltaic cell. International Journal of Engineering and Management Invention (IJEMI),01(02), 85-87.
- Shreya M (2023). Zener Diode: Theory, Applications and Advancements. International Journal of All Research Education and Scientific Method (IJARESM), 11 (9), 1392-1397.
- Shreya M (2023). The Evolution of Light Emitting Diode: From Theory to Practical Applications. International Journal of All Research Education and Scientific Method (IJARESM),11 (7),1710-1716.
- Shantanu K.M & Vimala C (2014). Cellular signals jamming system in 2G and 3G. International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering, 3(3), 242-247.
- Shradha Jha (2018). Thesis on cell phone detector. Roorkee College of Engineering, Department of Electronics a
- K Bhatia et al (2015). Signal Jammer and Its Applications. International Journal of Electrical and Electronics Research, 3(2),463-467
- Swathy P.G (2015). Mobile Jammers. International Journal of Engineering Research & Technology (IJERT). 3 (28).
- Thomas G (2017). Electronic Engineering 2: Resistors, elementary resistor circuits and Resistor Paradox. ResearchGate, 2-18.
Download all article in PDF
