1. Embedded Design Using ARM For Strong Room Security System
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2. CONTENTS Abstract Objectives Block diagram Methodology
Advantages & disadvantages
Applications
Conclusion

3. 1.ABSTRACT:
Aiming at the characters of wireless sensor network and intelligent room security system, this article studied a sort of intelligent room security system based on wireless sensor network. Through establishing the structure frame of alarming system, in this article, we designed the sensor nodes of alarming system, put forward the hardware design methods of sensor nodes for the alarming system, designed the software of alarming system through the combination of software and hardware, adopted the license technology to enhance the security and veracity of the transmission of alarming information. The experiment indicated that the system had certain practical value because of its convenient operation and reliable stability.

4. 2.OBJECTIVES:
“To save energy, make efficient utilization of power”.

5. 3.BLOCK DIAGRAM :

6. 4. METHODOLOGY: PIR Sensor:
The space to be monitored is divided by the lens into a number of zones. The number of zones depends on the number of segments of which the lens is composed. When somebody moves from one zone to other, there is a change in temperature which is collected by the lens as a variation in radiant energy. As the focus of the lens is a hydroelectric sensor which reacts to such a change by generating a small electric signal. That signal is processed and used to actuate/deactivate the appliances.

7. LDR Sensor:
Depending on the natural light intensity number of LED should be switched ON and OFF. This operation should be performed using COMPARATOR and ARM. When ever the light intensity in a room varies depending on that a digital signal has to be generated using COMPARATOR which should be given to the MSP430 . In controller a decision has to be made that how many LED should turn ON or OFF. In above fig 2 a LED array is shown in 4 numbers, because a single LED array consists of 9 LED’s therefore totally 3 1.

8.   Depending on the natural light intensity these array should be controlled. If intensity of natural light is minimum then only LED array 1 should glow (9 LED’s), if there is no natural light then complete 4 LED array should glow. And if there is a continuous variation in natural light intensity then depending up on variation in light intensity either LED arrays are selected. It means at a time it may be single or double or treble or all LED arrays may be switched ON and OFF.   

9. Temperature Sensor:
In room any temperature will vary then that given to the COMPARATOR, depending on that a digital signal has to be generated using COMPARATOR which should be given to the ARM. In controller a decision has to be made that fan should turn ON or OFF.

10. 5. ADVANTAGES & DISADVANTAGES:
Unnecessary wastage of electricity can be controlled to a greater extend.
Maximum power can be saved.
Electrical safety is designed to prevent device damage & electrical shocks.
Selectable Sensitivity, Sensitivity can be adjusted to match installation requirements.
Wide supply voltage range: 3.0V to 15V in COMPARATOR.
Walking up to the regulators board to change the fan speed is avoided.
Fan regulators are eliminated.

11. DISADVANTAGES:
In this project usage of relays leads to consume more power.

12. 6.APPLICATIONS: Forest fire detection. Landslide detection.
Water quality monitoring.
Natural disaster prevention .
Industrial monitoring

13. 7.CONCLUSION:
An embedded strong room security can be a very simple grouping of controls, or it can be heavily automated where any appliance that is plugged into electrical power is remotely controlled. Costs mainly include equipment, components, furniture, and custom installation. Ongoing costs include electricity to run the control systems, maintenance costs for the control and networking systems, including troubleshooting, and eventual cost of upgrading as standards change. Increased complexity may also increase maintenance costs for networked devices.

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