Membangunkan Keselamatan Kediaman Menggunakan IC DTMF
Nowadays, the electronic security systems are widely used in automobiles, offices, shops or home. Unfortunately, most of the electronic security systems are give out sound or light signals, but not give kind of report to the user or police. To overcome this weakness of the typical electronic s...
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| Main Author: | |
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| Format: | Monograph |
| Language: | English |
| Published: |
Universiti Sains Malaysia
2006
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| Subjects: | |
| Online Access: | http://eprints.usm.my/58737/1/Membangunkan%20Keselamatan%20Kediaman%20Menggunakan%20IC%20DTMF_Chai%20Yu%20Leong.pdf http://eprints.usm.my/58737/ |
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| Summary: | Nowadays, the electronic security systems are widely used in automobiles,
offices, shops or home. Unfortunately, most of the electronic security systems are give
out sound or light signals, but not give kind of report to the user or police. To overcome
this weakness of the typical electronic security systems, another home security system
that can automatically report the home situation to the users and/or police by using
telephone we developed. This system acts as an interface between the telephone line and
a sensor such as a temperature sensor or motion detector. It will automatically inform
the user or police through the home telephone line when a break in or a fire occurs.
Besides reporting the situation at home, the security system should be able to remotely
control using a telephone call. Although the home owner is not at home, he/she still can
switch on or switch off the light and home electrical appliance. Therefore, the
possibility of house break in will be reduced. Since the system is connected to the
telephone line, a telephone was incorporated into the system. LCD display is included to
show the menu and memory to store the phone number. The system uses MC34010
integrated DTMF transceiver IC to make a call and MT8870D integrated DTMF
receiver IC to manage the remote control function. A microcontroller AT89S52 is used
to control the 3 main functions of the system. The concept of the DTMF and telephone
line will be discussed in this report. The hardware design and firmware design are also
included in this report. Finally, the hardware is soldered on a PCB and the firmware is
loaded into a microcontroller to run the system. |
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