KR910002905B1 - Electronic key for starting automobile and operation method thereof - Google Patents

Abstract

The key system includes a ROM memorizing CPU program, a RAM, a timer, keyboard being connected with an input/output, and an output for operating starting motion of the automobile. when identification number being input by driver, does not correspond with the secret number being memorized in ROM of the keyboard, the automobile does not start and gives an alarm. The key comprises data bus (DB) for connecting CPU with keyboard(KB), input/output (I/O), ROM, RAM, timer; keybord having function button (FUN) being operated at the intersecting point of columnline (C1-C3), ROW line (R1-R4), lock button (LCK), off button (OFF), on button (ON), memory button (MRY).

Description

Car starting electronic key and its operation method

1 is a connection diagram of the keyboard connection state of the present invention.

2 is an exemplary view of a keyboard of the present invention.

3 is a program chart of the present invention.

4 is a flowchart of using the memory key of FIG.

5 is a flowchart illustrating an operating state of the present invention.

6 is a block diagram showing a configuration of the present invention.

7 is a view showing the shape of the keyboard according to the present invention.

* Explanation of symbols for main parts of the drawings

TM: Timer "FUN": Pingsion Button

CPU: CPI "LCK": Rockton

ROM: ROM "OFF": Off button

RAM: RAM "ON": Onboton

I / O: I / O "MRY": Memory Button

KB: Keyboard "STR": Start Button

OO: Output section KLA: Crack

DB: Databus ACC: First Stage

C ₁ -C ₃ : Hot wire ON: 2nd stage

R ₁ -R ₄ : Destination STR: 3rd stage

The present invention relates to an electronic starting key of a vehicle and a method of operating the same, and removes a normal starting key and connects the ROM and RAM, a timer, a keyboard used to connect an input / output unit and an input / output unit to which a CPI program is input, and a connection operation to each starting state. It is configured as an output unit that allows you to operate the keyboard at the time of departure, and if you press the password, the alarm does not start when the password does not match the programmed memory.

Conventional car starters insert mechanical keys to start an operating car or to stop the engine of a car.

However, since such a car start key is simply a mechanical principle, there are many keys that are the same as or similar to the shape of the start key for each car, and once the shape of the key is determined, it cannot be changed without replacing the lock. There is a drawback that it is not easy to prevent theft of a vehicle because it is easy to obtain similar keys.

The present invention has been invented to eliminate the drawbacks of the above-mentioned conventional automobile starter key, and store the unique number for the car key in a predetermined unit in ROM so that it can be replaced by simply operating the keyboard, and the button of the keyboard according to the unique number number. It is an object of the present invention to provide a starting electronic key for a vehicle and a method of operating the same, which causes the vehicle to be started when pressed and generates an alarm signal when the number of the stored numbers or their order is input differently.

Another object of the present invention is that when the number of the unique number to be operated by the car start key can not be entered within a specified time, the circuit function is not returned to the original state, the start does not take place, the alarm is activated to accurately identify the unique number for the start key. You can't operate the keyboard without knowing it.

Another object of the present invention is that the unique number of the ignition key, that is, the password can be arbitrarily changed as needed and those who do not know the original unique number can not be changed to a new password to maintain confidentiality The built-in lock device disables the operation when an unnecessary button is pressed due to a different mistake in the state, so that once the lock number has been entered, stop and other functions are impossible, and when the lock button is pressed again, the lock function is released. In this case, the state is released so that other keys can be manipulated.

The general key is divided into three stages, the first stage supplies power to the accessory (ACC), the second stage operates in the ON state, and the third stage operates in the start (STR) state.

The present invention is to enable the selective operation by the control signal of the input and output unit of the above 1-3 steps as described below in detail with reference to the drawings.

As shown in FIGS. 1, 2, and 6, the input / output unit (I / O), the ROM (ROM), and the timer (TM) controlling the keyboard (KB) and the output unit (OO) are used as data buses (DB). Numerical buttons of 0-9 which are selected and operated at the intersection of the heating wires (C ₁ , C ₂ , C ₃ ) and the routing lines (R ₁ -R ₄ ), which are connected to the CPU and act as part of the data bus (DB). And Function Button ("FUN"), Rock Button ("LCK"), Off Button ("OFF"), On Button ("ON"), Memory Button ("MRY"), Start Button ("STR") The keyboard (KB) is configured to work simultaneously with the button. At this time, it is provided to CPI as a block.

The output part operates by operating a relay lamp according to the output signal so that it can be operated in 1-3 stages when a normal key is operated.

When the operation method for completing the present invention is shown as the prochart of FIG. 3, the password is set to the initial value at the time of power on, and the first stage is the accessory (ACC), the second stage is ON, the third If the function button ("FUN") is YES as the button input 100 in the state that the single start (STR) is off, the password is input. If it is ON, the password (KLA) is activated to return to the button input (100), and the password is input. If this is correct, as the YES, the first stage ACC is turned on and waits for the button input 101. If NO or the password input time elapses for 2 seconds or more, the KLA is activated and the button input 101 is pressed. If the key of is OFF button ("OFF"), it returns to the initial OFF state, and if ON button ("ON"), the 2nd stage (ON) is turned off and it returns to the button input 101 and starts ("STR"). "", The third stage STR is turned on. Then, the lock button ("LCK") returns to the button input 102, and the button input 101 to the lock button ("). LCK "), when the lock button (" LCK ") is pressed again in the state through the button input 102, it returns to the button input 101 as YES, and if not pressed again, it returns to the button input 102 and the memory button (" MRY "). ) Moves to a separate memory program to execute the program.

The program that operates the memory is as follows.

In Figure 4, press the memory button ("MRY") and enter the original password. If it is correct, press the memory button ("MRY") twice as a button input, enter the new password, and press the memory button ("MRY") again. Press) and enter a new password to confirm. If it is matched, press the memory button ("MRY") in order to enter the new password and return to the button input 101 of FIG. 3 to wait for the next operation. If you fail to input the original password or new password at each memory input, or if you do not pass a certain time or do not confirm the memory button ("MRY") 4 times, the KLA sounds and the button is pressed again. Returning to (101), the memory function can be started again from the beginning.

5 is an operation procedure chart. If the function button ("FUN") is YES as a button input, the password is inputted and the first stage (ACC) is turned on. When "FUN" is ON, the KLA is activated and the engine starts when the start button ("STR") is input even if the second stage (ON) is turned ON or there is no input. When the off button ("OFF") is input, the engine is shut off and the power is stopped.The first stage (ACC) is on or the on button ("ON") is input or the engine is running. When ("LCK") is input, the next operation is not performed until the lock button ("LCK") is input again, and if the engine is not started, the start button ("STR") is input again and can be operated. .

In the present invention, each switch (0-9), function button ("FUN"), rock button ("LCK"), off button ("OFF"), on button ("ON"), and memory of the keyboard KB The button ("MRY") and the start button (STR) are not pressed in the usual state, and in the same state as FIG. 1, the lines R _{1 to} R ₄ operate in the state "1", and the CPI is heated (C). _{If 1} -C ₃ ) are all set to "1", all lines R ₁ -R ₄ are set to "1" irrespective of the leakage of each button, and CPI turns the heating line (C ₁ ) to "0" and the heating line If (C ₂ , C ₃ ) is set to 1, when one of the buttons corresponding to _one line (C ₁ ) is pressed, the line of the pressed button among the lines (R ₁ -R ₄ ) becomes "0" to provide an input signal. .

CPU will alternately provide "0" to each _one (C _1-3 ) and then check the destination (R _1- R ₄ ) and read "Read" if there is any "0". With the selected data of (R ₁ -R ₄ ) and heating wire (C ₁ -C ₃ ), it is possible to detect which button is input.

In fact, "0" is read and then read again several tens of msec to eliminate chattering by switching of the button.

In the present invention, the alarm crack (KLA) is made by using a timer (TM) controlled by CPU (CPU) to make a cycle of 30.6msec and then repeated 33 times is about 1 second (30.6msec × 33 = 1.009sec) do. Of course, you can shorten or lengthen the time as needed.

In addition, when operating each button of the keyboard KB, a program is counted once to alternately supply "0" to the heating wires C _1- C ₃ from the CPU to lead the lines R _1- R ₄ depending on the program. The time required to set is about 0.18msec and it will be alarmed when it fails to lead "0" through the line (R ₁ -R ₄ ) for 11 and 120 times, that is, if the button is not pressed within 0.18msec x 11,120 = 2.0016sec. KLA was activated to add anti-theft function.

Accordingly, in the present invention, when the function button ("FUN") is pressed through the keyboard KB and the password is pressed in the power-on state by the program of FIGS. 3-5, the first accessory (ACC) is turned on. If the password does not match or the password is pressed for more than two seconds or if the function button ("FUN") is not pressed, the KLA will ring and the third party will not be able to start it.

When the 1st stage (ACC) is on, press the on button ("ON") or omit it, and press the start button ("STR") directly and continue to press until the start is started. In addition, as shown in FIG. 5, in the state of the first stage ACC, the second stage ON, and the third stage STR, the lock button ("LCK") is pressed and input again, and the lock button ( "LCK") The key operation is not affected by the operation of other buttons ("OFF", "ON", "STR") before unlocking.

Also, as in Fig. 4, the password of the ignition key function can be changed as needed, but the memory button ("MRY") must be pressed four times so that the password can be changed so that only the vehicle owner can start the vehicle. In addition, it is effective for preventing theft of the vehicle by keeping the password secret.

As described above, the present invention operates the electronic keyboard according to the stored program by operating a button-type keyboard and prevents theft by operating an alarm lock when the password is not known or the button is pressed late or the function key is not pressed. When the password is known to a third party, the password can be changed and used to keep it secret. The lock function is added to remove inconvenience by stopping the function performance when a third party operates the keyboard without thinking. It was made possible.

Claims (1)

A car made by connecting the input / output unit (I / O), ROM (RAM), RAM (Timer), and Timer (TM) connected to the CPU (CPU) with the data bus (DB) connected to the keyboard (KB) and the output unit (OO). In the starting device, a function button ("FUN") and a rock button ("LCK") are selected to operate at the intersection of the heating lines C ₁ -C ₃ and the lines R ₁ -R ₄ operating as part of the data bus DB. Configure keyboard (KB) to operate "), off button (" OFF "), on button (" ON "), memory button (" MRY ") and start (STR) in common with some of the numeric buttons 0-9 The starting electronic key of the car, characterized in that the vehicle can be started by only operating the keyboard (KB) without a mechanical start key.

Images