1. Constitution of the Radio Frequency Keyless Entry
System for vehicle
The radio frequency keyless entry is
a system that it controls locking and unlocking the door and the
trunk and the panic by wireless remote controller. This system consists of three components. The TRANSMITTER is
a device that transmits the signal when the button is pressed. The transmission signal
consists of several
synchronous codes, unique identification code, security code and function code and crc code. The RECEIVER is
fixed inside the vehicle. It works intermittently to prevent the battery exhaustion. When the receiver detects the
synchronous code, it runs continuously to receive the signals completely. After receiving the signal, the receiver
decides which operation will be performed.
The user
can
select
the
following
operations
by
pressing
the
button
of the remote transmitter.
Transmitter
f = 313.85MHz
- 1 -
OPERATION ACTION
LOCK
lock the door
UNLOCK
unlock the door
TRUNK
open the trunk
PANIC
alarm the horn
