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Here is a project of a very sensitive long range cell phone detector circuit using a LM358 IC. The circuit can detect a cell phone from 10 to 12 meters away but it is also depends on the output signal strength of the cell phone you are using.

 
The cell phone detectors are mostly hand and pocket-size mobile transmission detectors. It can sense the presence of an activated mobile phone from a distance of one and a half meters. So it can be used to prevent use of mobile phones in examination halls, confidential rooms, etc. Use of Cell Phone Detector:
Feb 28, 2016 · Mobile phone detector pdf 1. i MOBILE PHONE DETECTOR A Project report submitted in partial fulfillment of the requirements for the award of Diploma In Electrical and Electronics Engineering By G.VAMSHI KRISHNA 13419-EE-036 G.VAMSHI 13419-EE-037 M.SRIKANTH 13419-EE-047 D.PALLAVI 13419-EE-009 K.RAVALI 13419-EE-018 Under the Guidance of Mr. K.SRINIVAS Assistant Professor DEPARTMENT OF ELECTRICAL ...
Jun 02, 2020 · The circuit is built using LM358 Op-Amp IC and NPN Transistor BC548.You can check our previous project based on LM358 IC: Over Heat Detector When a mobile phone is active, it radiates RF signal in the form of electromagnetic radiation.
Mar 25, 2010 · Mobile phone based drunk driving detection Abstract: Drunk driving, or officially Driving Under the Influence (DUI) of alcohol, is a major cause of traffic accidents throughout the world. In this paper, we propose a highly efficient system aimed at early detection and alert of dangerous vehicle maneuvers typically related to drunk driving.
Jun 02, 2020 · The circuit is built using LM358 Op-Amp IC and NPN Transistor BC548.You can check our previous project based on LM358 IC: Over Heat Detector When a mobile phone is active, it radiates RF signal in the form of electromagnetic radiation.

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Mobile phone detector using lm358 pdf

A Heatbeat Sensor is a monitoring device that measures the heart rate i.e the speed of the heartbeat. A person’s heartbeat is the sound of the valves in his heart expanding or contracting as they force blood from one region to another There are two ways to monitor the heart rate: one way is to manually check the pulse either at wrists or neck and the other way is to use a Heartbeat Sensor. Mobile phone detector CPD-197 is the modernized version of CPD-196, which was designed to detect modern GSM - LTE technologies as well as 2G,3G and Bluetooth signal. Innovative technology helps to detect false alarm while being impacted by strong as well as weak distorting signals. A Project Report at CELL PHONE DETECTOR Department of Electronics Engineering Session (2012-2013) ACKNOWLEDGEMENT The cell phone detectors are mostly hand and pocket-size mobile transmission detectors. It can sense the presence of an activated mobile phone from a distance of one and a half meters. So it can be used to prevent use of mobile phones in examination halls, confidential rooms, etc. Use of Cell Phone Detector: i have successfully implimented below circuit for active cell phone detection but i dont seem to understand the working of this circuit,if someone could explain it would be a great help.Thank you. operational-amplifier detection mobile

Oct 28, 2016 · Cell Phone Detector is a circuit that can sense the presence of any activated cell-phone nearby and gives an indication of activated cell-phone near around of it. Basically Cell-phone detector is a Frequency Detector or a Current to Voltage Converter Circuit which catches frequencies about 0.8 - 3.0GHz (Mobile band frequencies). LM358 RF Cell Phone Detector - Free download as PDF File (.pdf), Text File (.txt) or read online for free. LM358 RF Cell Phone Detector Mobile Phone Detector Using LM358 | Full Electronics Project December 2018 This mobile phone detector circuit can detect incoming & outgoing calls, SMSes, Internet & video transmissions even in silent mode.

determine bounds on standoff detection from these emissions. Fortunately, portal detection will require detection distances less than a few meters. 5. Determine hardware requirements for a detection system. A hardware system will most likely have to scan over a frequency range using a sensitive detector with a narrow band filter. Here, LM358 IC (A comparator/OpAmp) is used for comparing the sensor and reference voltages. The positive terminal of photodiode (This is the point where the voltage changes proportion to object distance) is connected to non-inverting input of OpAmp and the reference voltage is connected to inverting input of OpAmp.

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