dtmf based device controller abstract
DTMF BASED DEVICE CONTROLLING ABSTRACT
INTRODUCTION:
Now a day’s every system is automated in order to face new challenges in the present day situation.Automated systems have less manual operations,so that flexibility,reliabilities are high and accurate.Hence every field prefers automated control systems.Especially in the field of electronics automated systems are doing better performance. The industrial appliances can be switched on/off using DUAL TONE MULTI FREQUENCY TECHNOLOGY.
OBJECTIVE : The main function of the system is to control any electrical devices through mobile phone. The goal of the project is to develop a system,which uses Mobile technology that keeps control of various units of the automobiles,which executes with respect to signal sent by mobile.
METHOD:
In this concept two mobile phones with different service numbers are used, the control phone at receiving end, where the appliances are controlled is interfaced with microcontroller unit which controls the devices through relays.
To achieve this, the output of the mobile is amplified and fed to DTMF decoder chip, which generates binary code according to the received information from the other mobile phone. After establishing a communication link between the two mobiles by dialing the home mobile number, the corresponding keys of calling phone must be activated to generate different DTMF signals. Based on this signals, the DTMF decoder generates different binary codes through four outputs, and this data is Fed to the microcontroller. Now the program is prepared for the microcontroller to energize or de-energize the corresponding relay based on the code produced by the DTMF decoder chip.
SOFTWARE:
1) Keil C
2) 2) ORCAD/Express PCB
HARDWARE:
1) Micro controller.
2) DTMF
3) LCD module.
4) Power supply.
INTRODUCTION:
Now a day’s every system is automated in order to face new challenges in the present day situation.Automated systems have less manual operations,so that flexibility,reliabilities are high and accurate.Hence every field prefers automated control systems.Especially in the field of electronics automated systems are doing better performance. The industrial appliances can be switched on/off using DUAL TONE MULTI FREQUENCY TECHNOLOGY.
OBJECTIVE : The main function of the system is to control any electrical devices through mobile phone. The goal of the project is to develop a system,which uses Mobile technology that keeps control of various units of the automobiles,which executes with respect to signal sent by mobile.
METHOD:
In this concept two mobile phones with different service numbers are used, the control phone at receiving end, where the appliances are controlled is interfaced with microcontroller unit which controls the devices through relays.
To achieve this, the output of the mobile is amplified and fed to DTMF decoder chip, which generates binary code according to the received information from the other mobile phone. After establishing a communication link between the two mobiles by dialing the home mobile number, the corresponding keys of calling phone must be activated to generate different DTMF signals. Based on this signals, the DTMF decoder generates different binary codes through four outputs, and this data is Fed to the microcontroller. Now the program is prepared for the microcontroller to energize or de-energize the corresponding relay based on the code produced by the DTMF decoder chip.
SOFTWARE:
1) Keil C
2) 2) ORCAD/Express PCB
HARDWARE:
1) Micro controller.
2) DTMF
3) LCD module.
4) Power supply.