Chapter 3: Functional Decomposition At its core, the RFID Door Lock will have 3 inputs and 2 outputs. Power is an important input and will
supply the RFID Door Lock with the necessary voltage and currents to operate. It will be operated with 8.5V supply
and will be drawn through an AC adapter. The second input is the RFID Sensor Input. This is where the RFID tag
information will be entering the system. As for
the signal whether or not to keep the door locked or unlock the door. These ideas are graphically represented in
Figure 1 and Table 2.
FIGURE 1: LEVEL 0 BLOCK DIAGRAM
Input Description Power
Supplies voltage to the RFID Door
Lock and powers it for all
functions.
RFID Sensor
Input
Scans for RFID tags and unlocks
or remains locked depending on
settings and RFID tag.
The initial Level 1 decomposition, the RFID Door Lock can be broken down into 5 basic components. The
RFID Input (the RFID tag) goes into an RFID sensor that will then be placed into the MCU (or Microcontroller).
Based on the programming and the settings s
Chapter 3: Functional Decomposition At its core, the RFID Door Lock will have 3 inputs and 2 outputs. Power is an important input and will
oor Lock with the necessary voltage and currents to operate. It will be operated with 8.5V supply
and will be drawn through an AC adapter. The second input is the RFID Sensor Input. This is where the RFID tag
information will be entering the system. As for the outputs, the Unlock/Lock is where the RFID Door Lock sends
the signal whether or not to keep the door locked or unlock the door. These ideas are graphically represented in
FIGURE 1: LEVEL 0 BLOCK DIAGRAM
TABLE 2
L
EVEL
0
FUNCTIONALITY TABLE
Output Description Supplies voltage to the RFID Door
Lock and powers it for all
Unlock/Lock
Will unlock the door or remain
locked depending on the RFID tag
and settings.
for RFID tags and unlocks
or remains locked depending on
settings and RFID tag.
The initial Level 1 decomposition, the RFID Door Lock can be broken down into 5 basic components. The
RFID Input (the RFID tag) goes into an RFID sensor that will then be placed into the MCU (or Microcontroller).
Based on the programming and the settings set by the User Control, the MCU will then send instructions to the
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