19-06-2012, 05:28 PM
Advanced Embedded Design For Mobile Disabling At Restricted Areas
[attachment=24864]
Objective
This paper mainly uses the principle of Handoff Mechanism to disable the use of Cell Phone. This method uses external circuits that are to be added into the Cell Phones, which has many categories, where all the drawbacks are being put forth. This project is considered as commercial and more practical.
Existing System
Manual operation
using dummy antennas and handoff mechanism (an alternative of jammers) which were introduced long before.
Switch off their mobile in prohibited areas in order to avoid noise pollution
Proposed system
Automatic operation
External circuits that are to be added into the Cell Phones
Not affection the cell phone signal.
Easy to implement in future .
Avoiding noise pollution.
High efficiency
Block definition
In restricted area will have RF Transmitter to inform the mobile about the restriction.
In mobile section RF receiver will get the signal from restricted area.
Then the microcontroller will block the keypad and specked in the phone through relay.
LCD will display the status of mobile phone
Power Supply – Circuit Description
The operation of power supply circuits built using filters, rectifiers, and then voltage regulators. Starting with an AC voltage, a steady DC voltage is obtained by rectifying the AC voltage, Then filtering to a DC level, and finally, regulating to obtain a desired fixed DC voltage. The regulation is usually obtained from an IC voltage regulator Unit, which takes a DC voltage and provides a somewhat lower DC voltage, Which remains the same even if the input DC voltage varies, or the output Load connected to the DC voltage changes.
[attachment=24864]
Objective
This paper mainly uses the principle of Handoff Mechanism to disable the use of Cell Phone. This method uses external circuits that are to be added into the Cell Phones, which has many categories, where all the drawbacks are being put forth. This project is considered as commercial and more practical.
Existing System
Manual operation
using dummy antennas and handoff mechanism (an alternative of jammers) which were introduced long before.
Switch off their mobile in prohibited areas in order to avoid noise pollution
Proposed system
Automatic operation
External circuits that are to be added into the Cell Phones
Not affection the cell phone signal.
Easy to implement in future .
Avoiding noise pollution.
High efficiency
Block definition
In restricted area will have RF Transmitter to inform the mobile about the restriction.
In mobile section RF receiver will get the signal from restricted area.
Then the microcontroller will block the keypad and specked in the phone through relay.
LCD will display the status of mobile phone
Power Supply – Circuit Description
The operation of power supply circuits built using filters, rectifiers, and then voltage regulators. Starting with an AC voltage, a steady DC voltage is obtained by rectifying the AC voltage, Then filtering to a DC level, and finally, regulating to obtain a desired fixed DC voltage. The regulation is usually obtained from an IC voltage regulator Unit, which takes a DC voltage and provides a somewhat lower DC voltage, Which remains the same even if the input DC voltage varies, or the output Load connected to the DC voltage changes.