KR20010009182A - Car burglarproof apparatus using car audio - Google Patents

Abstract

PURPOSE: A burglarproof device for vehicle using car audio set is provided to prevent a car from being thieved without additional alarm device and to avoid an inconvenience that a user should input secret number at every time by allowing the output change of a microcomputer to be occurred even when a front panel is detached under a state that an engine is turned off. CONSTITUTION: A burglarproof device for vehicle using car audio set, which uses a detachable panel of a car audio set to protect a car theft occurring frequently, is constituted to allow engine start to be made when a front panel(10) of a car audio set owned by a car owner is inserted and then secret number is input, so that the car is prevented from being thieved. The burglarproof device comprises a front panel(10) for controlling a car audio set; a secret number input unit(21); a microcomputer(22) that receives a data from the front panel(10) and outputs a data to the front panel(10), detects whether the front panel(10) is detached or not through the data communication, receives a data and determines whether the data is identical with secret number set previously, and outputs HIGH signal for starting an engine and LOW signal for preventing the engine start; a key insert switch(30); an AND gate(23) receiving signals from the microcomputer(22) and the key insert switch(30) and outputting HIGH signal and LOW signal; and a power supply member(40) for supplying electric power of a battery to an engine in response to a signal from the AND gate(23).

Description

Car theft prevention device using car audio {CAR BURGLARPROOF APPARATUS USING CAR AUDIO}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle anti-theft device using car audio, wherein a car theft is frequently generated by using a detachable panel of car audio. The present invention relates to a vehicle antitheft device using car audio to prevent vehicle theft by allowing a vehicle to be started when a password is input after inserting a front panel.

As is well known, the tessellable car audio makes it possible to detach the front equipped with a control unit for controlling the operation of the car audio, thereby recovering the front during parking to prevent theft of the car audio.

Conventionally, a separate alarm device is mounted on the vehicle itself to prevent theft of the vehicle, and when an outsider touches the vehicle, an alarm sound is generated, and a driver must install a separate alarm device to prevent theft of the vehicle. Therefore, there was a problem such as burdening the driver.

Accordingly, the present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to prevent vehicle theft, which is frequently occurring, by using a detachable panel of car audio. It is to provide a vehicle theft prevention device using car audio to prevent vehicle theft by inserting a front panel of the car audio owned by the owner and allowing the vehicle to start when a password is entered.

In order to achieve the above object, the vehicle anti-theft device using the car audio according to the present invention comprises: a front panel for outputting or receiving data through a data line and controlling car audio; A password input unit that receives a password and outputs data when the signal is received that the front panel is inserted; Receiving data from the front panel or outputting data to the front panel, detecting whether the front panel is detachable through communication of the data, and outputting a signal relating to whether the front panel is detachable from the password input unit; A microcomputer inputting the password data input to the password input unit to determine whether the password matches the set password, and outputting a HIGH signal for starting and a LOW signal for starting prevention; A key insert switch for outputting a HIGH signal when the vehicle startup is in an ON state and a LOW signal when the vehicle startup is in an OFF state; An AND gate receiving a signal from the microcomputer and the key insert switch and outputting a HIGH signal and a LOW signal; And a starter supply unit configured to receive a signal from the AND gate to supply power of the battery to the engine.

1 is a functional block diagram showing the configuration of a vehicle anti-theft device using car audio according to an embodiment of the present invention.

<Explanation of symbols for main parts of drawing>

10: front panel

21: password input unit

22: micom

23: end gate

30: key insert switch

40: starting supply unit

Q1: first transistor

Q2: second transistor

R: resistance

Hereinafter, a vehicle anti-theft device using car audio according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a functional block diagram showing the configuration of a vehicle anti-theft device using car audio according to an embodiment of the present invention, the vehicle anti-theft device using car audio according to an embodiment of the present invention is a front panel (Front Panel) 10), password input unit 21, microcomputer 22, end gate 23, key insert switch 30, and starter supply unit 40.

The front panel 10 outputs data to the microcomputer 22 through a data line or receives data from the microcomputer 22, and controls the car audio so that the car audio cannot be operated when the driver separates it. It helps prevent theft of car audio.

When the password input unit 21 receives a signal indicating that the front panel 10 is inserted, the password input unit 21 receives a password and outputs the data to the microcomputer 22. Usually, the password input unit 21 is a preset button of a car audio. (Preset Button) is used, and the unique password should be entered when producing the car audio, and the user should know his / her unique number when purchasing the car audio, and input the unique number from 4 to 6 digits according to the user's preference. Allow change. Input the unique number in the following way. For example, if the unique number is 173458, select 1 as preset 1, 7 as preset 2, 3 as preset 3, 4 as preset 4, and 5 as preset 5. Select 5, allowing you to select 8 as preset 6. That is, whenever you press preset 1 once, it cycles from 0 → 1 → 2 → 3 → 4 → 5 → 6 → 7 → 8 → 9 → 0, and if it becomes the number, proceed to preset 2 and select the second number in the same way. After selecting all preset numbers up to preset number 6 by pressing a band key, the data is output to the microcomputer 22. If you want to change the unique password, enter the unique password using the preset button and press the band key for more than 2 seconds to change the unique password.

The microcomputer 22 receives data from the front panel 10 or outputs data to the front panel 10, and detects whether the front panel 10 is attached or detached through the communication of the data. Outputs a signal related to the detachment of the front panel 10 to the password input unit 21, and receives the password data input to the password input unit 21 to determine whether it matches the set password, and recognizes the ACC signal, The AND gate 23 outputs a HIGH signal for start-up to make the AND gate 23 in a stand-by state or a LOW signal for preventing start-up. At this time, even when the front panel 10 is pulled out due to a mistake during driving, the output of the microcomputer 22 is maintained to be HIGH, and the output change of the microcomputer 22 causes the front panel 10 to turn off when the vehicle is turned off. There is no need to enter a new password so that the output changes only when detached. In addition, when the vehicle is turned off while the front panel 10 is continuously inserted, there is no need to enter a new password.

The key insert switch 30 outputs a HIGH signal to the AND gate 23 when the vehicle is started, and outputs a LOW signal to the AND gate 23 when the vehicle starting is OFF. .

The AND gate 23 receives a signal from the microcomputer 22 and the key insert switch 30 and outputs a HIGH signal to the start supply unit 40 when both signals are HIGH signals. The start supply unit 40 serves to output a LOW signal.

When the start supply unit 40 receives the HIGH signal from the AND gate 30, the starting supply unit 40 supplies power to the engine, and includes a first transistor Q1, a second transistor Q2, and one resistor. And (R).

The first transistor Q1 mounted in the starting supply unit 40 receives a signal from the AND gate 23 to perform an ON / OFF operation, and outputs a voltage when turned on.

The resistor R mounted in the starting supply unit 40 adjusts the voltage output from the first transistor Q1 to a predetermined amount.

The second transistor Q2 mounted in the starting supply unit 40 receives a voltage from the resistor R to perform an ON / OFF operation and, when ON, outputs a voltage supplied from a battery to the engine.

Hereinafter, the operation process of the vehicle anti-theft device using the car audio having the above configuration will be described.

When the driver inserts the front panel 10, the data line with the microcomputer 22 is activated, and the microcomputer 22 prepares to receive a password. If the front panel 10 is not inserted, the driver does not start.

Then, when the driver inputs the password through the password input unit 21, the microcomputer 22 checks whether the input password and the preset password match, and outputs a HIGH signal only when the driver matches the AND gate 23. If the password is not matched at this time, if the password does not match, the LOW signal is output to the end gate 23 does not become a stand-by state.

Subsequently, when the vehicle start ON signal is input from the key insert switch 30 to the AND gate 23 in the stand-by state, the AND gate 23 outputs a HIGH signal to the start supply unit 40. Even if the signal is input, if the AND gate 23 is not in the stand-by state, the HIGH signal may not be output to the starting supply unit 40, and thus starting is not performed.

After that, the start-up supply unit 40 that receives the HIGH signal supplies power to the engine to start the engine, and even if the front panel 10 is detached from the engine after starting, the engine does not need to enter a new password. This jammed state is maintained.

As described above, according to the anti-theft device using the car audio according to the present invention, the vehicle owner has a car theft to prevent frequent theft of the vehicle using a detachable panel of the car audio (Car-Audio) After inserting the front panel (Front Panel) of the car audio, it is possible to start the vehicle when entering the password, thereby preventing theft of the vehicle.

In addition, there is an excellent effect of preventing the hassle of having to enter a password every time, so that the output of the microcomputer only changes when the front panel is detached when the vehicle is turned off.

Claims (2)

A front panel that outputs or receives data through a data line and controls car audio; A password input unit that receives a password and outputs data when the signal is received that the front panel is inserted; Receiving data from the front panel or outputting data to the front panel, detecting whether the front panel is detachable through communication of the data, and outputting a signal relating to whether the front panel is detachable from the password input unit; A microcomputer inputting the password data input to the password input unit to determine whether the password matches the set password, and outputting a HIGH signal for starting and a LOW signal for starting prevention; A key insert switch for outputting a HIGH signal when the vehicle startup is in an ON state and a LOW signal when the vehicle startup is in an OFF state; An AND gate receiving a signal from the microcomputer and the key insert switch and outputting a HIGH signal and a LOW signal; And a starter supply unit configured to receive a signal from the AND gate to supply power of a battery to the engine. The method of claim 1, The start supply unit receives a signal from the AND gate to perform an ON / OFF operation, and outputs a voltage when it is turned on; A resistor for adjusting a voltage output from the first transistor by a predetermined amount; And a second transistor configured to receive a voltage from the resistor to perform an on / off operation and to output a voltage supplied from a battery to the engine when the voltage is turned on.