Vehicle intrusion detection system and vehicle intrusion detection method

• US 9,610,921 B2
• Filed: 05/30/2013
• Issued: 04/04/2017
• Est. Priority Date: 07/10/2012
• Status: Active Grant

• Current Assignee: LS Automotive Technologies., Ltd.
• Original Assignee: Daesung Electric Company Limited (LS Corporation)
• Inventors: Kyung, Tae Ho
• Primary Examiner(s): Phan, Hai
• Assistant Examiner(s): Wu, Zhen Y
• Application Number:
  US14/413,009
• Publication Number:
  US 20150166010A1
• Time in Patent Office: 1,405 Days
• Field of Search: 34042624
• CPC Class Codes: B60R 25/1004 Alarm systems characterised by the type of sensor, e.g. current sensing means using door lock sensors B60R25/1001
• CPC Class Codes: B60R 25/1009 Sonic sensors; Signal treatment therefor
• CPC Class Codes: B60R 25/302 using recording means, e.g. black box
• CPC Class Codes: B60R 25/31 of human presence inside or outside the vehicle
• CPC Class Codes: B60R 25/32 of vehicle dynamic parameters, e.g. speed or acceleration
• CPC Class Codes: B60R 25/34 of conditions of vehicle components, e.g. of windows, door locks or gear selectors
• CPC Class Codes: G08B 13/02 Mechanical actuation
• CPC Class Codes: G08B 13/04 by breaking of glass
• CPC Class Codes: G08B 13/1645 using ultrasonic detection means and other detection means, e.g. microwave or infrared radiation
• CPC Class Codes: G08B 29/188 Data fusion; cooperative systems, e.g. voting among different detectors

Abstract

The present invention relates to a vehicle intrusion detection system and vehicle intrusion detection method, which are capable of effectively detecting various types of vehicle intrusions, minimizing incorrect detections, and lowering manufacturing costs of a system, and the vehicle intrusion detection system comprises: a first sensor unit which detects it signal or light reflected off an object to generate a first detection signal, and which outputs the generated first detection signal; a control unit which controls an operation of the first sensor unit and receives the first detection signal from the first sensor unit; and a second sensor unit which detects a rotation, an inclination, or impact of the vehicle to generate a second detection signal, and which inputs the generated second detection signal to the control unit, wherein the first sensor unit and the second sensor unit are mounted on a single module.

Claims

1. A vehicle intrusion detection system which is mounted on a vehicle and detects intrusion within the vehicle, comprising:

a first sensor unit which detects light or a signal reflected by an object, generates a first detection signal, and outputs the generated first detection signal;

a control unit which controls an operation of the first sensor unit and receives the first detection signal from the first sensor unit; and

a second sensor unit which detects a rotation or inclination of the vehicle or an impact against the vehicle, generates a second detection signal, and inputs the generated second detection signal to the control unit,

wherein the control unit detects intrusion within the vehicle or determines whether there is an external simple impact based on the first detection signal filtered based on the second detection signal.

2. The vehicle intrusion detection system of claim 1, wherein the first sensor unit comprises:

a transmitter which outputs light or a signal of a specific cycle;

a receiver which receives light or a signal reflected by an object;

a signal processing unit which applies a transmitting signal to the transmitter in response to a signal processing control signal of the control unit; and

a signal analysis unit which analyzes a signal received through the receiver.

3. The vehicle intrusion detection system of claim 2, wherein:

the first sensor unit comprises an ultrasonic sensor equipped with the transmitter and the receiver, and

the second sensor unit comprises a gyro sensor or an impact sensor.

4. The vehicle intrusion detection system of claim 2, wherein:

the control unit detects vehicle intrusion based on the first detection signal by determining vehicle intrusion based on the first detection signal received through the first sensor unit and then determining whether the second detection signal from the second sensor unit is a specific level or more for a specific time, and

if vehicle intrusion is detected based on the first detection signal, the control unit increases a transmitting level of the transmitter higher than a previous transmitting level of the transmitter when the intrusion is detected and investigates vehicle intrusion again.

5. The vehicle intrusion detection system of claim 4, wherein the control unit detects intrusion within the vehicle or an external simple impact based on at least one of an intensity of a signal and a change of a waveform in a voltage-time table indicating that the first detection signal sampled at a preset sampling time interval from the first sensor unit belongs to which voltage range, if an integer value of a specific level or more is within a range of a preset reference value in second pattern data within a table in which sampling data for a change of an angle sampled in plural times at specific intervals for a specific time from the second sensor unit are averaged and the averaged values are classified into specific steps.

6. The vehicle intrusion detection system of claim 1, wherein:

the first sensor unit and the second sensor unit are mounted on a single module, and

the single module is mounted on an overhead console of the vehicle.

7. A vehicle intrusion detection method of detecting vehicle intrusion in a vehicle intrusion detection system comprising a first sensor unit which detects light or a signal reflected by an object, generates a first detection signal, and outputs the generated first detection signal, a control unit which controls an operation of the first sensor unit and receives the first detection signal from the first sensor unit, and a second sensor unit which detects a rotation or inclination of the vehicle or an impact against the vehicle, generates a second detection signal, and inputs the generated second detection signal to the control unit, the vehicle intrusion detection method comprising:

a first step of detecting vehicle intrusion based on the first detection signal by detecting vehicle intrusion based on the first detection signal received through the first sensor unit and then determining whether the second detection signal from the second sensor unit is a specific level or more for a specific time;

a second step of when the vehicle intrusion is detected based on the first detection signal increasing a transmitting level of a transmitter of the first sensor unit higher than a transmitting detected level when the intrusion is in the first step and investigating vehicle intrusion again; and

a third step of if the vehicle intrusion is detected for a specific tilt or more in the second step, detecting intrusion within the vehicle or determining whether there is an external simple impact based on the first detection signal filtered based on the second detection signal.

8. The vehicle intrusion detection method of claim 7, wherein:

the first pattern data comprises a voltage-time table indicating that the first detection signal sampled at a preset sampling time interval from the first sensor unit belongs to which voltage range,

the second pattern data comprises a table in which sampling data for a change of an angle sampled in plural times at specific intervals for a specific time from the second sensor unit are averaged and the averaged values are classified into specific steps, and

the third step comprises detecting intrusion within the vehicle or an external simple impact based on at least one of an intensity of a signal and a change of a waveform in the voltage-time table if an integer value of a specific level or more in second pattern data within the table is within a range of a preset reference value.