KR100401159B1 - System for chasing stolen automobile - Google Patents

Abstract

The present invention provides a stolen vehicle location tracking system capable of quickly arranging a stolen vehicle by tracking the position of the vehicle by using a GPS (Global Positioning System) satellite signal and a CDMA (Code Division Multiple Accessing) modem. The stolen vehicle location tracking system according to the present invention includes a GPS receiver mounted on a vehicle and receiving GPS satellite signals to calculate and output position information of the vehicle, and theft detection means for outputting a burglar detection signal when the vehicle is stolen. When theft detection signal is input from the theft detection means, the microcomputer controls the entire system to transmit theft report information along with the location information of the vehicle provided by the GPS receiver through the CDMA communication network, and the information provided through the CDMA communication network. At the same time, the stolen vehicle is reported to the patrol vehicle closest to the stolen vehicle's current location. It includes an information center that provides location information.

Description

System for chasing stolen automobile

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a location tracking system. In particular, a stolen vehicle that can quickly track and arrest a stolen vehicle using a Global Positioning System (GPS) and a Code Division Multiple Access (CDMA) modem when the vehicle is stolen. A location tracking system.

In modern times, the number of vehicles is rapidly increasing due to the civilization of civilization, and these vehicles are becoming a necessity of modern people, but as the number of vehicles increases, theft of vehicles from general passenger cars to cargo trucks with expensive goods Increasingly, the situation is becoming a social problem, not only causing property damage but also increasing the mental and material damages of citizens when stolen vehicles lead to crimes.

In the past, the stolen vehicle was arranged by arranging the stolen vehicle in connection with the police station that receives and handles the stolen report or by notifying the number of the stolen vehicle through the air broadcasting. This method causes a lot of manpower and economic loss. In many cases, the recovery of stolen vehicles is not easy.

Also, in the related art, a security device is installed in a vehicle in order to prevent theft of a vehicle from the beginning. As shown in FIG. 1, a mode switching unit 1 for switching a state of a vehicle to a sensing mode by a mode switching signal is shown. And, if the mode switching signal is input from the mode switching unit 1, the sensor 3 for detecting the contact of the vehicle, such as forcible door opening attempt, and the siren and buzzer receiving the detection signal generated by the sensor 3 It consists of a warning sound generating unit 5 for generating a warning sound through.

Here, the mode switching of the mode switching unit (1) is made by a remote start device, after parking and stopping of the vehicle, when switching to the anti-theft mode, the sensor 3 detects an impact due to external contact. When the detection sensor 3 detects external contact, the warning sound generating unit 5 generates a warning sound.

As such, in the past, when a security device for preventing theft is installed in a vehicle and an unidentified person attempts theft, a device that generates a warning sound through a siren or a buzzer has been put to practical use, but such a security device is not only intentional contact but also accidental contact. Even when a contact is generated, a warning sound is generated to not only embarrass the surrounding people, but also cause noise pollution. Above all, once the vehicle is stolen, the location of the vehicle cannot be tracked, which is inevitable for arranging the stolen vehicle. .

The present invention has been made to solve the above-mentioned problems of the prior art, and when the vehicle is stolen, the vehicle is quickly stolen by tracking the position of the vehicle by using a GPS (Global Positioning System) and a CDMA (Code Division Multiple Accessing) modem. The purpose of the present invention is to provide a location tracking system for stolen vehicles.

The anti-theft vehicle location tracking system of the present invention for achieving the above object is a GPS receiver that receives a GPS satellite signal and calculates and outputs the location information of the vehicle, and theft to output theft detection signal when the vehicle is stolen. When theft detection signal is input from the detection means and theft detection means, the microcomputer to control the entire system to send the theft report information along with the location information of the vehicle provided by the GPS receiver via the CDMA communication network, provided through the CDMA communication network And an information center for reporting the theft of the vehicle and providing the location information of the stolen vehicle to the patrol vehicle that is closest to the current location of the stolen vehicle based on the information.

The stolen vehicle location tracking system of the present invention detects theft of the vehicle by itself and uses the CDMA (Code Division Multiple Access) modem to display the location information of the vehicle using the GPS (Global Positioning System) along with theft report information. By notifying to the police, the information center receives the report of theft to the National Police Agency, locates the vehicle based on the location information of the vehicle continuously sent from the vehicle, and provides it to the police administration and self-operated security vehicle to promptly arrange the stolen vehicle. Is possible.

1 is a block diagram of a security device according to the prior art

2 is a block diagram of a stolen vehicle location tracking system according to the present invention

3 is a detailed configuration diagram of theft detecting means of FIG.

4 is a flow chart for explaining the stolen vehicle location tracking method of the present invention;

Explanation of symbols for main parts of the drawings

21: theft detection means 23: GPS antenna

25: GPS receiver 27: CDMA modem

29: Micom 31: Information Center

Hereinafter, the stolen vehicle location tracking system of the present invention will be described with reference to the accompanying drawings.

First, prior to explaining the stolen vehicle location tracking system of the present invention will be described briefly with respect to the GPS (Global Positioning System) employed in the present invention.

GPS, commonly known as a satellite navigation system, was developed by the US Department of Defense in the early 1970s and began full-scale operation in the mid-1990s. It is known as the most ideal navigation system available at.

Although initially developed for military use, it is rapidly expanding into civilian use due to its economics and usefulness, and is now the most common navigation system.

Since the satellite navigation system is a highly concentrated system, it is composed of many components, but it can be divided into three components: space segment, control segment, and user segment. The part consists of a GPS satellite that continuously transmits a navigation message necessary for position calculation to a user through a carrier frequency. For reference, the carrier wave is accurately adjusted to two frequencies L1 (1575.42 MHz) and L2 (1227.6 MHz) in the L band and transmitted to the user.

The positioning of the GPS satellites is specially designed so that at least four satellites are always visible throughout the earth to calculate the user's three-dimensional position and receiver clock error, and the satellite data transmitted from each GPS satellite is assigned to each satellite number. It includes a specially designed PRN code (Pseudo Random Noise code). That is, since GPS satellite data is transmitted to the user by code division multiplexing (CDMA), the GPS receiver can clearly receive navigation data corresponding to each satellite.

Next, the control section tracks and monitors GPS satellites through various control stations widely distributed around the world, estimates the position of the satellites as accurately as possible, and transmits various correction information to the satellites. This correction information is continuously sent to the user as part of the navigation data. The GPS satellite control station consists of five monitor stations, four ground antenna upload stations, and an operational control segment.

Finally, the user part consists of a GPS receiver that receives GPS satellite signals to calculate its location and various equipment developed to achieve each specific purpose by applying the same. The GPS receiver uses the navigation data received from the satellite to calculate your location and speed, and the GPS antenna connected to the receiver tracks the GPS satellite signal with its own built-in algorithm and only tracks one satellite signal from the satellite. Information on the relative position of other satellites can be obtained, allowing all visible satellite signals to be tracked within a short time.

The position and velocity information calculated by receiving GPS satellite signals is basically used for navigation and tracking of moving objects, and the accuracy of the clock error of the receiver calculated with time synchronization is very important in the field of mobile communication. This is useful for information. Satellite navigation systems also have a wide range of applications because they can be applied to aircraft auto landing systems, geodetic and vehicle positioning and precision surveys, which require high positional accuracy in addition to general navigation systems.

The present invention transmits the vehicle's theft report and the location information to the information center through the satellite navigation system, the CDMA modem, and the self-sensing means, which are defined as described above, so that the current position of the vehicle can be accurately and quickly tracked to prevent theft of the stolen vehicle. It is characterized by arranging.

FIG. 2 is a block diagram of a stolen vehicle location tracking system according to the present invention, and is mainly composed of a part installed in a vehicle and an information center for communicating with each vehicle through a CDMA modem.

That is, the stolen vehicle location tracking system of the present invention, theft detection means 21 for detecting whether the vehicle is stolen, the GPS antenna 23 for receiving a GPS satellite signal, and the satellite received through the GPS antenna 23 The GPS receiver 25 calculates the azimuth angle with respect to the traveling direction of the vehicle, the moving distance and the speed according to the driving of the vehicle using a signal, and provides the information to the microcomputer, and controls the whole system and controls the theft detection unit 21. When the detection signal is inputted, the microcomputer 29 provides the theft report information to the information center 31 using the CDMA modem 27 together with the location information of the vehicle provided by the GPS receiver 25.

In this case, the information center 31 receives the theft report from the police station based on the azimuth angle of the direction of the vehicle received through the CDMA modem, the moving distance according to the driving of the vehicle, the speed and the report information, and arranges the vehicle at the same time. Provide location information for the patrol vehicle.

The anti-theft detection means 21 detects whether a mandatory contact of a vehicle or a mandatory door opening and operation of a device essential for driving a vehicle are output, and outputs a burglar detection signal to the microcomputer 29. Same as 3.

That is, as shown in Fig. 3, the mode selection button 21a for selecting the normal mode and the anti-theft mode, and the first and second for detecting basic theft attempts required for forcibly opening the door or driving the vehicle. 2, the third sensing unit (21b) 21c (21d) and the fourth sensing unit (21e), the first sensing unit (21b) detects the operation of the brake pedal (Break Pedal), The second sensing unit 21c detects whether the accelerator pedal is operated. In addition, the third detector 21d detects whether the gear transmission is operated, and the fourth detector 21e detects a forced door opening attempt.

As described above, the theft detecting means 21 according to the present invention detects whether the brake pedal, the accelerator pedal, and the gear shifting device, which must be operated for mandatory starting and driving of the vehicle, are operated, and the theft detecting means 21 is operated. By outputting the anti-theft detection signal to the microcomputer 29, the microcomputer 29 outputs the location information of the stolen vehicle provided by the GPS receiver 25 to the information center along with the report of theft.

For reference, in the anti-theft mode, the normal mode can be released by installing a password input means (not shown) so that only the owner can know the password. Do not.

Meanwhile, a GPS satellite (not shown) transmits GPS satellite signals to a plurality of vehicles equipped with a GPS receiver 25, wherein the satellite signals include location information according to a driving state of a vehicle equipped with a GPS receiver 25. That is, it contains various information from which azimuth and speed information can be calculated.

The GPS receiver 25 calculates the current position of the stolen vehicle by detecting information on the azimuth and speed of the vehicle traveling direction and the moving distance according to the driving state of the vehicle from the GPS satellite signals received through the GPS antenna. In addition, the calculated information on the current position is output to the microcomputer 29. When theft detection signal is input from the theft detecting means 21, the microcomputer 29 uses the CDMA modem to report the theft of the vehicle to the information center 31. Report to and at the same time provides the location information of the stolen vehicle provided by the GPS receiver 25.

That is, under the control of the microcomputer 29, the GPS receiver 25 modulates the location information of the stolen vehicle, the vehicle identification information, and the theft report information into a signal capable of transmitting wirelessly, and converts the modulated signal into a CDMA modem. To the information center.

Accordingly, the information center 31 demodulates the information of theft report transmitted from the CDMA modem 27 mounted in the stolen vehicle, the location information of the vehicle, the identification information of the vehicle, and the like before demodulating the information center 31. If the system control unit (not shown) of the vehicle, the system control unit detects the location of the vehicle through the stolen vehicle, the location information, the identification information, and the like, based on the input information, the system control unit closest to the current position of the stolen vehicle. The patrol vehicle belonging to the National Police Agency, or the information center 31 provides the patrol vehicle operated by itself.

The stolen vehicle location tracking method of the present invention will be described in more detail with reference to the flowchart shown in FIG. 4.

As shown in FIG. 4, when the vehicle owner sets the state of the vehicle from the normal mode to the anti-theft mode by using a mode selection button installed inside the vehicle at the time of leaving the vehicle after the vehicle is parked and stopped (S401). Theft detecting means detects whether the vehicle is stolen, such as whether the brake pedal is operated, whether the accelerator pedal is operated, whether the gear transmission is operated, or whether the door is forcibly opened (S402).

Accordingly, when theft of the vehicle is detected by theft detection means (S403), the theft detection means outputs theft detection signal to the microcomputer (S404), and the microcomputer receiving the theft detection signal is the location of the vehicle provided by the GPS receiver. Theft report information together with the information and the identification information is wirelessly transmitted to the information center using the CDMA modem (S405).

Accordingly, the information center receives the stolen report from the police station based on the received information (S406), and grasps the location of the vehicle based on location information and identification information of the vehicle continuously provided by the GPS receiver under the control of the microcomputer (S407). ), The current location of the stolen vehicle is notified to the patrol vehicle belonging to the National Police Agency and the patrol vehicle operated by the information center (S408). At this time, in providing the location information of the stolen vehicle from the information center to the patrolling vehicle, it informs the patrol vehicle that is closest to the current position of the stolen vehicle on the basis of the location information provided by the GPS receiver, thereby enabling the rapid arrangement of the stolen vehicle. .

As described above, the stolen vehicle location tracking system of the present invention has the following effects.

The GPS receiver mounted on the vehicle detects the location of the vehicle from the GPS satellite signals transmitted from the GPS satellites, and provides theft center with the stolen report information along with the identified location information of the vehicle. By providing the location of the stolen vehicle to the patrol vehicle that is closest to the current location of the stolen vehicle, it is possible to quickly arrange the stolen vehicle, thereby preventing the stolen vehicle from leading to a crime.

Claims (3)

A GPS receiver mounted on the vehicle to receive a GPS satellite signal and calculate and output location information of the vehicle; Theft detection means for outputting a burglar detection signal when the vehicle is stolen; A microcomputer that controls the entire system to transmit theft report information along with the location information of the vehicle provided by the GPS receiver through a CDMA communication network when a theft detection signal is input from the theft detection means; A stolen vehicle location tracking system comprising an information center for reporting a stolen vehicle based on information provided through a CDMA communication network and providing a location information of the stolen vehicle to a patrol vehicle that is closest to the current location of the stolen vehicle. system. The method of claim 1, wherein the theft detection means, A mode selection button for switching the vehicle to the anti-theft mode, A first detecting unit detecting whether the brake pedal of the vehicle is operated in the anti-theft mode; A second detecting unit detecting whether the accelerator pedal of the vehicle is operated; A third detecting unit detecting whether the gear transmission of the vehicle is operated; Theft vehicle location tracking system, characterized in that consisting of a fourth sensor for detecting whether the door of the vehicle is open. The anti-theft vehicle location tracking system according to claim 1, wherein the anti-theft detection means further comprises a password input unit for inputting a password to switch the anti-theft mode to a normal mode.