Figure 31. SMS Sending Flow with TwSMS
TwSMS provided applications and browser interface for transfering the
SMS data to TwSMS, the PCM-7130 used API mode in this thesis. The SMS
data was in the input queue first after the SMS data arrived in TwSMS, the
TwSMS service platform was then reading the queue and transferring to
output queue or in data base if error to sent, if success the SMS would be
send to cell phone by operator.
3-5 Two-Tier Identification
3-5-1 Block Diagram
Notification to
Cell Phone
Alarm
Two-tier Identification
Keypad Read
Keyboard Driver
Kernel Mode
Driver Mode
RFID Read
RS232 Driver
Linux Kernel
Application
Mode
Figure 32. The two-tier identification Stack Diagram
Figure 32 shows the two-tier identification stack diagram, it has two
device driver, the RS232 driver is used for RFID connection and the
keyboard driver is used for keypad connection, the double identification
process read the keypad for identifying first, and then read the RFID tag for
identifying the second, the alarm or notification to cell phone would invoke
if the two-tier identification errors was occurred.
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