YY-Electron Wireless Home Security Alarm System Manuel d'utilisateur télécharger pdf (Page 3)

International Journal of Smart Home

Vol. 7, No. 2, March, 2013

3. An Overview of the Multilevel Home Security System (MHSS)

As shown in Figure 1, MHSS comprises of three major components which are the

inputs, main control unit and outputs. Each component contains of its sub-components.

The input elements are such as thieves’ alarm, presence detecting, and break-in camera

that will be triggered if a thief has broken into the covered area. Meanwhile MHSS is

divided into three levels where the input elements work simultaneously with the output

elements. The inputs elements are formed by the sensor nodes that will react when the

system is triggered. Table 1 summarizes the relationship of the inputs and output

elements.

Figure 1. The Block Diagram of the Home Security Systems

Table 1. The Outcomes of the Triggering from Inputs

Inputs

Outputs

Explanations

Laser sensing node

Light Bulbs

When the circuit is triggered, a signal is sent to the

main control unit, and then first set of light bulbs is

turned on.

Presence detecting

Light Bulbs

When the circuit is triggered, a signal is sent to the

main control unit, and then 2

set of light bulbs is

turned on.

Break-in node

Webcam, light

bulbs and

computer

When the circuit is triggered, a signal is sent to the

main control unit, and then the 3

set of light bulbs is

turned on. The camera will start capturing images

when the third level is violated. The captured images

will be delivered to a specified email through the

server.

4. System Implementation

4.1. Electronic Circuit Design

MHSS is divided into three levels as shown in Figure 2. Each level has different

sensor nodes which identifies of stimulants. Each electronic component serves its role

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YY-Electron Wireless Home Security Alarm System Manuel d'utilisateur Page 3