11-10-2010, 10:18 AM
[attachment=5953][attachment=5592]
AIM:
The main aim of the project is to detect the presence of the mobile phone even if it is in silent mode.
PURPOSE:
The purpose of the project is to sense the presence of an activated mobile phone from a distance of one and half meters. So it can be used to prevent use of mobile phones in examination halls, confidential rooms etc.
DESCRIPTION:
This project consists of IC CA3130 operational amplifier, IC2 NE 555 monostable multivibrator and Buzzer. Mobile transmission data detector can sense the presence of an activated mobile phone from a distance of one and half meters. It also useful for detecting the use of mobile phone for spying and unauthorized video transmission.
It detects both incoming , outgoing calls, sms and video transmission even if mobile in silent mode.the moment the bug detects RF tx signal from an activated mobile phone and it starts sounding a beep alarm and led blinks .the alarm continues until the signal tx ceases.
Here the op-am IC CA 3130 is used as a current to voltage converter with capacitor C3.
When the mobile phone signal is detected by C3 the OUTPUT OFic1 becomes high and low alternatively according to the frequency of the signal indication by led1. this triggers monostable multivibrator IC2.
SOFTWARES:
1. Embedded C
2. Keil IDE
3. Uc-Flash
HARDWARES:
1. Power Supply
2. IC CA3130
3. IC NE 555
4. BUZZER
5. ANTENNA
MOBILE BUG
AIM:
The main aim of the project is to detect the presence of the mobile phone even if it is in silent mode.
PURPOSE:
The purpose of the project is to sense the presence of an activated mobile phone from a distance of one and half meters. So it can be used to prevent use of mobile phones in examination halls, confidential rooms etc.
DESCRIPTION:
This project consists of IC CA3130 operational amplifier, IC2 NE 555 monostable multivibrator and Buzzer. Mobile transmission data detector can sense the presence of an activated mobile phone from a distance of one and half meters. It also useful for detecting the use of mobile phone for spying and unauthorized video transmission.
It detects both incoming , outgoing calls, sms and video transmission even if mobile in silent mode.the moment the bug detects RF tx signal from an activated mobile phone and it starts sounding a beep alarm and led blinks .the alarm continues until the signal tx ceases.
Here the op-am IC CA 3130 is used as a current to voltage converter with capacitor C3.
When the mobile phone signal is detected by C3 the OUTPUT OFic1 becomes high and low alternatively according to the frequency of the signal indication by led1. this triggers monostable multivibrator IC2.
SOFTWARES:
1. Embedded C
2. Keil IDE
3. Uc-Flash
HARDWARES:
1. Power Supply
2. IC CA3130
3. IC NE 555
4. BUZZER
5. ANTENNA
