3.
Block diagram
8BIT
CPU
RECEIVER
CIRCUIT
POWER
SOURCE(5V)
data
DOORLOCK
CONTROLER
Signal of vehicle status
input
output
12V (car battery)
5MHz
313.85MHz
EEPROM
DRIVE
CIRCUIT
figure 3.1
block diagram of the receiver
ANT
COMPA‑
RATOR
LOW‑Freq.
AMP
LOCAL‑OSC
LP
FILTER
RF‑OSC
RF‑AMP
BP
FILTER
CPU
figure 3.2
block diagram
(
receiver Circuit
)
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