KR100993357B1 - Method of alarming burglary at a vehicle - Google Patents

Abstract

A burglar alarm method in a vehicle is disclosed. In the disclosed vehicle theft alarm method, (a) the hands-free detection mode is activated when the ETACS of the vehicle indicates the parking state of the vehicle; (b) determining whether a rupture sound greater than or equal to a reference value is detected in the hands-free microphone; (c) When the rupture sound is detected in the step (b), the search mode of the anti-theft function is activated, and when the hands-free signal is transmitted to the audio system of the vehicle, the power of the head unit of the audio system is applied. Starting the high performance DSP of the audio system; (d) adjusting the sensitivity of the microphone and starting to search for a noise generation pattern; (e) determining whether the vehicle is externally invaded by a logic circuit of the audio system by comparing the noise searched in step (d) with a previously input noise pattern; and (f) outputting a warning sound through the speaker of the audio system when it is determined that the external intrusion is made in step (e).

According to the present invention, there is an advantage that can improve customer satisfaction when purchasing a vehicle by reducing the cost and safety.

Audio system, car security system, hands free

Description

Theft alarm method in vehicle {METHOD OF ALARMING BURGLARY AT A VEHICLE}

1 is a schematic flowchart showing sequentially the burglar alarm method in a vehicle according to the present invention.

Figure 2 is a block diagram schematically showing the configuration of a system to which the theft alarm method is applied in a vehicle according to the present invention.

<Description of the symbols for the main parts of the drawings>

10. ETACS

11.mic

12. Hands free

20. Audio system

21. Operation keys

22a. High performance DSP

22b. Logic circuit

23. Power Supply

24. Speaker

The present invention relates to a burglar alarm method in a vehicle, and more particularly, to a burglar alarm method in an improved vehicle to accurately determine the burglar alarm without additional costs.

Conventional vehicle theft alarm system is a system that recognizes and reacts to the driver's voice input into the vehicle installed in the vehicle, is activated, and released by the driver's voice.

By the way, in the case of the above-mentioned conventional vehicle burglar alarm system, since the system is activated and released by voice recognition, it is unclear about the criterion for judging whether or not the vehicle is intruded.

And the principle of the burglar alarm system of the commercially available vehicle is a system for determining whether the intrusion by vibration and shock.

However, since such a system reacts to external vibrations, alarms are easily generated in the vehicle body contact or impact in addition to in-vehicle intrusion, so the accuracy of intrusion is low. Nevertheless, these systems have to be purchased and installed separately, which costs money, damages the vehicle, and causes vehicle safety problems.

The present invention was created in order to solve the above problems, using the hands-free and audio system currently installed in the vehicle, no additional costs, no damage to the vehicle and safety problems, and vehicle interior noise The purpose of the present invention is to provide a burglar alarm method in a vehicle so that the burglar alarm judgment can be made accurately.

The anti-theft alarm method for a vehicle of the present invention for achieving the above object comprises the steps of: (a) initiating a hands-free detection mode when the ETACS of the vehicle indicates the parking state of the vehicle; (b) determining whether a rupture sound greater than or equal to a reference value is detected in the hands-free microphone; (c) When the rupture sound is detected in the step (b), the search mode of the anti-theft function is activated, and when the hands-free signal is transmitted to the audio system of the vehicle, the power of the head unit of the audio system is applied. Starting the high performance DSP of the audio system; (d) adjusting the sensitivity of the microphone and starting to search for a noise generation pattern; (e) determining whether the vehicle is externally invaded by a logic circuit of the audio system by comparing the noise searched in step (d) with a previously input noise pattern; and (f) outputting a warning sound through the speaker of the audio system when it is determined that the external intrusion is made in step (e).

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic flowchart showing a sequential alarm method in a vehicle according to the present invention, and FIG. 2 is a block schematically showing the configuration of a system to which the burglar alarm method is applied in a vehicle according to the present invention. The figure is shown.                     

Referring to the drawings, the burglar alarm method in the vehicle according to the present invention, first, the driver's getting off the electronic time and alarm control system (ETACS) 10 of the vehicle, door lock When the parking state of the vehicle is instructed by door lock, start-off, or the like, the detection mode of the hands-free 12 is activated. (Step 110).

The ETACS 10 is a system that generates various timer functions and various alarm functions by a central control by a microcomputer. A vehicle speed sensitive intermittent wiper with a memory function, a washer interlock wiper, a rear glass heating timer (Defogger Timer), door lock prevention when key is released, keyhole lighting, photosensitive room lamp, power window timer, auto door lock, seat belt tension reducer timer, sunroof timer, mist wiper ) And built-in functions such as auto light control.

And hands-free 12 in the present invention, as described below, performs a detection function for the burst and impact sound at low power, and consists of a simple DSP and filter.

In the step 110, the detection mode, only the micro-frequency signal is input at the logic setting (parking + no people in the vehicle).

Subsequently, it is determined whether the microphone 11 of the hands-free 12 detects a ruptured sound of more than a reference value (step 120).

Subsequently, when the rupture sound is detected to be equal to or greater than the reference value in step 120, the search mode of the anti-theft function is activated, and when the hands-free 12 transmits a power input signal to the power supply unit 23 of the audio system 20 of the vehicle. In response to the remote activation of the power supply unit 23 of the audio system 20, the power of the head unit is applied to activate the high performance DSP 22a of the audio system 20 (step 130).

That is, the input signal of the microphone 11 detects the magnitude of the high frequency signal through a filter, and sends a search mode signal to the audio system 20 when the noise (rupture sound) of the reference value or more is input.

On the other hand, if the condition of step 120 is not satisfied, the control of the present step is repeated.

In the present invention, as described later, the audio system 20 inputs a noise pattern code and a microphone 11 stored in an existing memory by using a high performance DSP 22a and a logic circuit 22b when starting a search mode. The signal is compared to determine whether an invasion occurs, and an alarm is generated through the speaker 24.

On the other hand, in another embodiment of step 120, the search mode of the anti-theft function may be activated even when the door of the vehicle is opened without a key input instead of the rupture sound.

In response to the input of the microphone 11 of the hands-free 12, the sensitivity of the microphone 11 is adjusted upward, and the search for a noise generation pattern is started (step 140). Amplify.

The logic circuit 22b of the audio system 20 determines whether the vehicle is externally invaded by comparing the noise searched in step 140 with the noise pattern previously input (step 150).                     

Here, when the noise pattern is described, a specific code provided by the automobile company is input, and the noise pattern is stored in this code. For example, rough breaths or sound hit by tools are stored in frequency, level, and frequency, and the manufacturer has done a lot of research to provide an optimal solution and update it periodically. On the other hand, the logic circuit 22b determines whether or not the intrusion is made.

If it is determined that the intrusion into the vehicle from the outside in step 150, the warning sound (warning broadcast) is output through the speaker 24 of the audio system 20. (step 160) For example, a small warning sound (constant frequency) Print several times.

On the other hand, if the condition of step 150 is not satisfied, control from step 140 is performed again.

Subsequently, after performing step 160, the search mode is restarted, and another noise is searched to compare noise patterns (step 170). The rescan mode here is, for example, human motion or other small noise. Navigate.

That is, the logic circuit 22b of the audio system 20 determines whether the vehicle is externally invaded by comparing the rescanned noise with the noise pattern previously input.

When the condition of the step 170 is satisfied, that is, when it is determined that there is an external invasion into the vehicle, the burglar alarm sound is output through the speaker 24 of the audio system 20 (step 180).

Here, the output of the burglar alarm sound is output as the alarm sound at the maximum volume from the audio system 20.                     

After performing step 180, the search mode of the audio system 20 is stopped (step 190). That is, the power switch of the audio system 20 is not operated.

Here, to stop the search mode of the audio system 20, by pressing the operation key 21 in sequence by using the operation key (21) can enter the password to stop the search mode, When released, alarms are output at regular time intervals.

That is, all key operations of the vehicle are stopped with the burglar alarm sound output.

On the other hand, if the noise is not generated for more than a predetermined time in step 170 is performed again from the step 110.

As described above, the anti-theft alarm method in the vehicle according to the present invention recognizes and analyzes the glass rupture sound and other noise flowing into the hands-free 12 to determine whether an external invasion is detected, and the audio system 20 checks the intrusion. It automatically starts to generate the theft alarm, all key inputs of the audio system 20 are stopped, and a specific password must be entered to release the warning sound.

That is, after inputting a pattern for the noise flowing into the microphone 11 of the hands-free 12 into the audio system 20, a transient signal such as a glass rupture sound is generated, and analyzing the generated noise to determine whether an outsider is invaded. Generate warning broadcasts and alarms as 24.

As described above, while the conventional technology is a technology for recognizing and responding to a voice input by a microphone, the present invention reacts with respect to a noise pattern generated indoors, and thus, criteria for determination are greatly different.                     

In addition, by analyzing the signal flowing into the microphone 11 using the DSP and digital filters built into the hands-free 12 and audio system 20, and output and control around the audio system 20, the system configuration of the prior art Over discrimination

In addition, the present invention proposes a hardware and logic structure based on code input for a noise pattern from a manufacturer, and the noise signal can predict the cause of noise through frequency analysis to some extent, and uses the repeatability and magnitude of the signal. This makes it possible to identify sound sources more clearly.

Therefore, in consideration of the psychological state or behavioral trends caused by intrusion through many studies, manufacturers can set noise patterns with a certain frequency band, amplitude, and repetition period, and users add such functions to audio through audio manipulation. Or update the content.

In addition, since the audio system 20 is connected to telematics and is expected to be changed to an OS-based operating system, the audio system 20 is equipped with a memory and a high-performance DSP 22a, so that various inputs to noise patterns are possible.

As described above, the burglar alarm method in the vehicle according to the present invention has the following effects.

Conventionally, the present invention adds an anti-theft function to the hands-free and adds a logical configuration function to the audio system by adding an anti-theft system to the audio system after purchasing the vehicle. It can prevent breakage.

Therefore, it is possible to improve customer satisfaction when purchasing a vehicle by reducing costs and increasing safety.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the invention. Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

Claims (9)

(a) initiating a hands-free detection mode when the ETACS of the vehicle indicates the parking state of the vehicle; (b) determining whether a rupture sound greater than or equal to a reference value is detected in the hands-free microphone; (c) When the rupture sound is detected in the step (b), the search mode of the anti-theft function is activated, and when the hands-free signal is transmitted to the audio system of the vehicle, the power of the head unit of the audio system is applied. Starting the high performance DSP of the audio system; (d) adjusting the sensitivity of the microphone and starting to search for a noise generation pattern; (e) determining whether the vehicle is externally invaded by a logic circuit of the audio system by comparing the noise searched in step (d) with a previously input noise pattern; (f) if it is determined that the external intrusion in step (e), the step of outputting a warning sound through the speaker of the audio system; a theft alarm method in a vehicle comprising a. The method of claim 1, (g) after performing step (f), restarting the search mode, searching for other noises, and comparing noise patterns to determine whether the vehicle is externally invaded by the logic circuit; and (h) outputting a burglar alarm sound through a speaker of the audio system if the condition of step (g) is satisfied. The method of claim 2, And after the step (g) is performed, stopping the search mode of the audio system. The method of claim 3, Stop search mode of the audio system, Burglar alarm method for a vehicle, characterized in that by inputting the password by sequentially pressing the operation key using the operation key of the audio system. The method of claim 2, If the noise is not generated for more than a predetermined time in the step (g), the theft alarm method for a vehicle, characterized in that to perform again from the step (a). The method of claim 2, The output of the theft alarm sound, the theft alarm method in a vehicle, characterized in that for outputting the alarm sound at the maximum volume. The method of claim 2, And all the key operations of the vehicle are stopped together with the burglar alarm sound output. The method of claim 1, In the step (a), the detection mode is, Burglar alarm method for a vehicle, characterized in that for inputting only the micro-frequency signal when setting logic. The method of claim 1, In the step (b), when the door of the vehicle is opened without a key input instead of the rupture sound, the search mode of the anti-theft function is activated.

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