Mobile phone detector is a circuit that detects the presence of mobile phone up to a certain range like 1.5 meter. We know that every mobile phones operates under 800 mhz to 2100 mhz range of.
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Cell phone detector project index:
Cell phone detector project. Basic principle of mobile phone detector circuit. The cell phone detector is essentially a frequency detector or a current to voltage converter device, which detects frequencies between 0.8 and 3.0 ghz (mobile band. Enter the number and see the map.
In the schottky diode circuit, the schottky diode is used to detect the cell phone signal as they have a unique property of being able to rectify low frequency signals, with low noise rate. The circuit can be basically divided into two parts, rf signal detector; Using cell phone detector circuit we can detect any cell phone within the range on 1.5m.this circuit can detect incoming call/sms, outgoing call/sms, data transmission even if mobile is in silent mode.
A cellphone generally transmits and receives indicators in the frequency range of 0.9 to 3ghz. The circuit can detect incoming and outgoing calls, smses, internet and video transmissions even if a mobile phone is kept in silent mode. Akuon project report submitted in partial fulfillment of the requirement for the award of the degree of bachelor of science in electrical and electronic engineering of the university of nairobi date of submission:
Prj071 by mwango ambrose nyale f17/1438/2011 supervisor: Here the circuit uses a 0.22pf disk capacitor (c3) to capture the rf signals from the mobile phone. This project utilizes the rf system of the cell phone as the feature to be used to detect its presence.
Today the era is marked by the inventions of technology and wireless communication is one of the remarkable invent of technology. The first half of the circuit makes rf signal detecting section. This project is cool to play with and very useful to teachers so that they can find the student's who are using cellphone inside class room
The transmission frequency of mobile phones ranges from 0.9 to 3 ghz with a wavelength of 3.3 to 10 cm. So a circuit detecting gigahertz signals is required for a cell phone detector. Its small size makes it handy and it easily occupy space in your pocket.
So it can be used to prevent use of mobile phones in examination halls, confidential rooms, etc. Whenever the circuit detect rf signal the buzzer is continuously buzzing and led is blinking unless and until the signal transmission ceases. It detects the phone when an incoming call or outgoing call is made or when an sms is sent or received or any gprs used.
This mobile phone detector can sense the presence of an activated mobile phone from a distance of four to five metres. So a circuit detecting gigahertz signals is required for a cell phone detector. Fan ordinary rf detector using tuned lc circuits is not suitable for detecting signals in the ghz frequency band used in mobile phones.
The basic principle behind the cell phone detector circuits is to detect the rf signals. Rupinder sidhu simranjeet kaur hardeep kaur need for cell phone detection: The project made is a cell phone detector which is capable of detecting the 2g,3g,4g cell phones and its signals.
Which have been formulated or proposed on how cell phones can be detected. So it can come handy in an examination hall or meetings where mobile phones are not permitted. Most of them use the features such as audio system, rf system and common materials of the phones and try to look into how they can be used as basis to detect mobile phones.
Enter the number and see the map. Capacitor c7 (0.22μf) is the main component which will sense high frequency rf signals. The lead length of the capacitor is fixed as 18 mm with a spacing of 8 mm between the leads to.
Simple mobile phone detector circuit designed with few easily available components and we can detect any kind of active mobile phones with in a room or specific space. This prototype circuit will be useful for mobile restricted area and mobile detecting applications. Project proposal on cell phone detector submitted in partial fulfillment for the award of nz diploma in electrical engineering submitted by:
Mobile phone detector is a device that can identify the existence of any active mobile phone in the vicinity and provides an indicator of the active cell phone in the vicinity. With the development of communication technology, the requirement of cellphones has expanded dramatically. The best use of this cellphone detector is in examination hall, meeting rooms etc.
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