KR19990037917A - Radio transmitter by un-interference device of the robbery signal Vehicles - Google Patents

Abstract

The present invention relates to a vehicle antitheft device that prevents a reception failure due to radio interference or interference of a theft signal transmitted to a radio frequency (RF) transmitter when the vehicle is stolen.

Patent application No. 98-2864 (February 26, 1998) "vehicle black box", which is filed by the present applicant, installs a wireless transmitter inside a black box installed in a vehicle, so that the stolen signal is wireless when the vehicle is stolen. The stolen signal (or vehicle information) stored in the memory unit, for example, "Daegu 1-ga No. 1234 99 Year Sonata III is a stolen vehicle." The voice theft signal is propagated to the air, and the voice theft signal can be quickly moved by a fixed checkpoint, a temporary checkpoint equipped with a burglar signal receiver, a patrol vehicle equipped with a burglar signal receiver, or a walking patrolman carrying the burglar signal receiver. It is configured to be.

The transmission power (transmission output) of the burglar signal transmitter using radio waves is limited to about 10 mW so that the burglar signal can be received from the vehicle at a radius of about 200 m to 300 m so that the police officer located in the reception area After theft signal is received by the stolen signal receiver, the stolen vehicle can be quickly moved to the stolen vehicle, whereby the stolen vehicle can be effectively inspected and arrested to recover the stolen vehicle.

In the above, the transmission distance of the stolen signal (or the distance at which the stolen signal can be received) is limited to within a radius of about 200 m to 300 m, and even if the transmission power is limited to about 10 mW, the vehicle is stolen from another vehicle (plural vehicles) located nearby. When the signals are sent at the same time, there is a problem that the interference signal can not be received or bad reception occurs because interference is generated.

Therefore, the present invention provides a waiting time (pause time) between the stolen signal R transmitted by radio waves and the stolen signal R so that another vehicle can transmit the stolen signal R. In addition, if a pilot signal P (or a synchronous signal) is transmitted before another theft signal R is transmitted from another vehicle nearby, the vehicle stops the transmission of the theft signal R, thereby preventing theft signal R of another vehicle. ) And the theft signal R of the vehicle are alternately transmitted to prevent interference, interference and poor reception of the theft signal R transmitted nearby.

In addition, when theft signal R transmitted from another vehicle is detected, the vehicle stops the transmission of theft signal R. When theft signal R transmitted from the other vehicle is detected, the vehicle receives theft signal R. By continuing to transmit to prevent the interference of the stolen signal (R), interference and poor reception.

Description

Radio transmitter by un-interference device of the robbery signal Vehicles}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle antitheft device that transmits (transmits) a stolen signal of a stolen vehicle (theft vehicle) or information of the stolen vehicle by radio waves using a wireless (RF) transmitter. When theft signals are sent simultaneously from two stolen vehicles, interference of theft signals is generated, so that another vehicle can send theft signals between theft signals transmitted by radio waves and theft signals (pause time) In addition, if a pilot signal (or a synchronous signal) is sent out before the theft signal is sent from another vehicle nearby, the vehicle stops sending the theft signal so that the stolen signal of the other vehicle and the theft signal of the vehicle are By alternating transmission, it is possible to prevent the interference, radio interference and poor reception of the theft signals transmitted simultaneously in the neighborhood. .

That is, the pilot signal sent just before theft signal is transmitted to synchronize the stolen signal transmission time of this vehicle with the stolen signal standby time of another vehicle, thereby simultaneously transmitting the stolen signal at a time difference, thereby causing interference or interference and reception. It is to prevent defects.

Patent application No. 98-2864 (February 26, 1998) "vehicle black box", which the applicant has filed before, installs a wireless transmitter inside the black box installed in the vehicle, and theft signal is radio wave when the vehicle is stolen. It is to be sent out through a non-electrical wave. When a vehicle is stolen, a stolen signal (or vehicle information) stored in a memory unit, for example, a voice theft signal such as "Daegu 1-ga No. 1234 99 Year Sonata III is a stolen vehicle." The radio frequency signal is modulated at high frequency and then propagated to the air through a radio transmitter and a transmission antenna. The voice theft signal includes a patrol vehicle equipped with a fixed checkpoint, a temporary checkpoint, or a burglar signal receiver or a burglar signal receiver. Since walking patrolers and the like can receive and move quickly, the stolen vehicle can be effectively inspected, arrested and recovered.

The transmission power (transmission output) of the burglar signal transmitter using radio waves is limited to about 10 mW so that the burglar signal can be received from the vehicle at a radius of about 200 m to 300 m so that the police officer located in the reception area It is possible to move quickly after receiving the theft signal, so that the stolen vehicle can be effectively checked, arrested and recovered.

On the other hand, since the theft signal is transmitted unilaterally, the transmission distance (or the distance from which theft signal can be received) is limited to within a radius of about 200 m to 300 m, and even if the transmission power is limited to about 10 mW, When theft signals are simultaneously transmitted from other vehicles, interference or interference may occur, and thus theft signals may not be received at all or may not be properly received.

Accordingly, in the present invention, when theft signals are simultaneously transmitted from a plurality of stolen vehicles, interference of theft signals is generated, so that a waiting time (stop time) is placed between theft signals transmitted by radio waves and theft signals to other vehicles. When the theft signal is transmitted and the pilot signal (or the synchronous signal) is sent out before the theft signal is transmitted from another vehicle nearby, the vehicle stops the transmission of the theft signal and the It is an object of the present invention to prevent the theft signals of the vehicle from being alternately transmitted, thereby preventing interference or radio interference and poor reception of theft signals simultaneously transmitted in the vicinity.

That is, the burglar signal transmitted simultaneously by synchronizing the burglar signal transmission time of this vehicle (or another vehicle) with the burglar signal waiting time of another vehicle (or this vehicle) by the pilot signal transmitted immediately before the burglar signal is transmitted is disparity. By sending the signal out, it is possible to prevent the interference, interference and reception failure between the stolen signals.

In addition, when a stolen signal transmitted from another vehicle is detected by the receiver, the vehicle stops transmitting the stolen signal, and when the stolen signal transmitted from another vehicle is idle, the vehicle transmits the stolen signal, thereby interfering with or interfering with the stolen signal. And it aims to prevent poor reception.

In addition, if another vehicle is out of the audible reception area and theft signal transmitted from another vehicle is not received (detected), the vehicle continuously transmits the theft signal to prevent interference or interference with theft signal and reception failure. The purpose.

In order to achieve the above object, a receiving antenna and a receiving unit for receiving a pilot signal (or a synchronization signal) transmitted from another vehicle to a control unit composed of a micom or a CPU, and an identification code unit for giving a unique identification code for each vehicle. And a pilot signal generation unit (or a synchronization signal generation unit) which transmits a pilot signal (or a synchronization signal) immediately before the vehicle transmits the stolen signal so that other vehicles can recognize it. The white Sonata III is a stolen vehicle. "A memory unit for storing the vehicle information for the theft signal, a clock generation unit for acquiring a reference time, and an antitheft unit for stopping the transmission of the theft signal due to the theft state being resolved. And a transmitter for continuously transmitting the pilot signal and theft signal to radio waves (RF) until theft is released, and a transmitting antenna.

When the vehicle and the other vehicle are located in the audible reception area, the pilot signal is first transmitted before the vehicle transmits the theft signal so that no other vehicle transmits the theft signal. The Sonata III is a stolen vehicle. ”When the theft signal is finished sending the stolen vehicle, the Sonata III waits at rest and the other vehicle alternately sends the stolen signal along with the pilot signal. By repeating the process, the vehicle and the other vehicle prevent the reception failure due to interference or interference of theft signal transmitted from the audible reception area.

Therefore, a nearby police officer can quickly move to the stolen vehicle to inspect and arrest and recover the stolen vehicle. In the present invention, the pilot signal may be sent immediately before the theft signal is sent or immediately after the theft signal is sent, and the transmission time can be shortened. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic diagram of the present invention.

2 is a circuit block diagram of the present invention.

3 is a timing diagram for transmitting and waiting time of a burglar signal in the present invention.

<Explanation of symbols for main parts of the drawings>

(2)-vehicle theft prevention device (4) (6)-vehicle

(8)-Theft Signal Receiver (10)-Control Unit

(12)-Receive Antenna (14)-Receiver

(16)-Identification code (18)-Clock generator

(20)-pilot (synchronization) signal generator (22)-memory

(24)-Theft Ministry (26)-Transmitter

(28)-Transmission Antenna (R)-Theft Signal

(P)-pilot signal (a)-stolen frame

1 is a schematic diagram of the present invention, in which a stolen signal R including vehicle information or vehicle information is transmitted to a radio wave from a vehicle 4 or 6 having an anti-theft device 2 installed therein. When transmitted, it is configured to be received by a nearby burglar signal receiver 8 so as to inspect, detect, and recover the stolen vehicle.

The vehicle anti-theft device 2 of the present invention may be provided one by one for each vehicle 4, and the anti-theft signal receiver 8 receiving the anti-theft signal R transmitted from the vehicle anti-theft device 2 is fixed checkpoint. And by installing at a temporary checkpoint, mounted on a patrol vehicle, or carried by a walking patrol vehicle, the receiving network can be configured in the form of a point organization at a plurality of places, so that it can move quickly and effectively check, retrieve and recover stolen vehicles.

FIG. 2 is a circuit block diagram of the vehicle antitheft device 2 of the present invention installed in the vehicle 4 or another vehicle 6, and the antenna 12 is input to the input of the control unit 10 composed of a micom or a CPU. A receiving unit 14 having a receiver, an identification code unit 16 for assigning a unique identification code to each vehicle, a clock generator 18 that can be used as a reference time, and the vehicle 4 have a stolen signal R. A pilot signal P generator (or a synchronization signal generation) which transmits a pilot signal P (pilot signal (or synchronization signal) immediately before the transmission) to transmit the stolen signal R alternately with the other vehicle 6. 20), a memory unit 22 storing vehicle information for the burglar signal R such as "Daegu 1-ga No. 1234 99 year-old white Sonata III is a stolen vehicle", and theft when the theft state is resolved. The anti-theft release unit 24 which can stop transmitting the signal R, and the pilot signal P and the anti-theft signal R to the radio wave RF until the theft is released. It shall be composed of a transmission unit for transmitting 26, and a transmission antenna (28).

The theft signal R of the present vehicle (or another vehicle) is different from the theft time R of the present vehicle (or another vehicle) by the pilot signal P transmitted immediately before the theft signal R is transmitted. By synchronizing the waiting time, the theft signal R, which was simultaneously sent out, is sent out at a time difference, thus preventing interference, interference, and poor reception between theft signals R.

In addition, in the present invention, the pilot signal P may be sent immediately before the theft signal R is sent or immediately after the theft signal R is sent, and the delivery time can be adjusted to be appropriately short.

When the stolen main vehicle 4 and the other stolen vehicle 6 simultaneously transmit the theft signal R in the audible reception area, the pilot signal (before the main vehicle 4 sends the theft signal R) P) is sent out first to prevent other vehicles from sending the stolen signal R, and then the stolen signal R containing the vehicle information such as "Daegu 1-ga No. 1234 99 Year Sonata III is a stolen vehicle." When the transmission of the theft signal R of the vehicle 4 is finished, the vehicle is to be idled and the other vehicles alternately repeat the process of transmitting the pilot signal P and theft signal R. Since the theft signal R transmitted by the vehicle 4 and the other vehicle 6 in the audible reception area is transmitted with a time difference (time division method), the reception signal due to interference or interference between the stolen signals R is poor. This is to be prevented.

Therefore, since the nearby police officer can satisfactorily receive the stolen signal R by the stolen signal receiver 8, it can move to the stolen vehicle 4 and 6 quickly, and can inspect, arrest, and collect | recover.

3 is a stolen signal R indicating a time during which another vehicle 6 stops transmitting the stolen signal R and waits while the present vehicle 4 transmits a pilot signal P and a stolen signal R. FIG. It is a timing chart of transmission and waiting time.

In the case where the time of one frame a during which the theft signal R is transmitted and waited is assumed to be 10 seconds, the vehicle 4 transmits the pilot signal P for about 0.5 seconds as shown in (a). After transmitting the signal R for about 4 seconds and waiting for about 5.5 seconds, the other vehicle 6 transmits the pilot signal P (0.5 seconds) and the stolen signal R (4 seconds) as shown in (b). If the vehicle 4 sends out the stolen signal R of one frame (a) and waits, the next pilot signal (P) (0.5) Second) and theft signal R (4 seconds) and then wait (5.5 seconds), and while the vehicle 4 is waiting, the other vehicle 6 receives the theft signal R as shown in (d). By transmitting again, the theft signals R of the vehicles 4 and 6 are alternately transmitted without interference, so that the police officer can receive and cope with the theft signals R of the vehicles 4 and 6 satisfactorily.

Since the theft signal R transmitted from the vehicle 4 and the other vehicle 6 is synchronized by the pilot signal P preceding the theft signal R in the above, interference is prevented and theft signal R is also prevented. Even if the transmission time is different, the burglar signal R is synchronized by the pilot signal P so that it can be transmitted alternately.

Further, by setting the time at which the theft signal R is sent out to be about 1.5 seconds longer than the standby time, even if the reference time of the vehicle 4 and the other vehicle 6 does not coincide, the interference or theft signal R of the signal ( Cutting off of the end of theft information is prevented.

In the present invention, the pilot signal P, which is a tone signal, is processed by ultrasonic so as not to be output to the speaker, or blocked by the filter circuit even when received by the stolen signal receiver 8, thereby preventing the speaker of the stolen signal receiver 8. It is preferable not to be outputted to, and when output to the speaker of the stolen signal receiver (8) it is desirable to have a sound range and sound pressure of a degree that does not irritate the receiver's ear.

In addition, the receiving unit 14 inputs the received pilot signal P to the control unit 10 to remove the unwanted signal by waveform shaping and then detects and amplifies the control unit 10, and the control unit 10 receives the pilot signal P from the receiving unit 14. When the) is input, the transmission of the theft signal R is stopped and the standby state is terminated. When the waiting time ends, the theft signal R is alternately transmitted by repeating the process of transmitting the theft signal R.

In the present invention, the transmission and reception antennas 28 and 12 are installed so as not to be exposed to the outside of the vehicle 4 and 6, but are installed so that the gain or standing wave ratio SWR is not largely attenuated. Even if exposed to the outside of the gain or standing wave ratio (SWR) is not attenuated significantly, it is preferable to install so that it can not be easily confirmed.

In addition, the vehicle anti-theft device (2) is installed in a secret (hidden) place difficult to find the vehicle stolen (squeeze) or installed in a location where it is difficult for human access to prevent the theft signal (R) sent out forcibly blocked. do.

In addition, the case of the vehicle anti-theft device (2) is made of super-metal or super alloy or black box for automobiles (Patent Application No. 98-2864 (February 26, 1998) "Vehicle Black Box", filed by the applicant) It is desirable that the vehicle anti-theft device 2 is not damaged or damaged from intentional or unintentional pressure.

The vehicle antitheft device 2 and the anti-theft signal receiver 8 transmit and receive radio waves of the same frequency band, and the transmission antenna 28 and the anti-theft signal receiver of the anti-theft device 2 ( The receiving antenna 12 of 8) uses a non-directional antenna such as a rod antenna, a helical antenna (vertical antenna), and a grand plane (GP) antenna to transmit and receive the stolen signal R without directivity.

The anti-theft signal receiver 8 may use the antenna having a directivity such as a dipole antenna, a yagi antenna, and a loop antenna to determine the driving (escape) direction of the stolen vehicle by a difference according to the intensity of radio waves received. More preferably, by using an omni-directional antenna and a directional antenna, or by using an antenna capable of selectively using both the directivity and the non-directional antenna, the anti-theft signal (R) is usually used regardless of the direction by using the non-directional antenna. When theft signal R is received while the reception signal is received, it is preferable to use the directional antenna to track the driving direction of the stolen vehicle.

In addition, the anti-theft signal receiver 8 adopts a high-sensitivity antenna and a receiving circuit so that the sensitivity can be finely adjusted in multiple stages so as to adjust the sensitivity to an appropriate sensitivity according to the strength of the anti-theft signal R transmitted from the vehicle 4, 6. Therefore, it is desirable to be able to cope with the intelligibility and poor.

In addition, the anti-theft release unit 24 is configured with a keypad that can release the theft by a password, it is preferable that a person who does not know the password can not release the stolen state.

According to the present invention configured as described above, when the door of the vehicle is opened or started while the anti-theft key is not turned off, the anti-theft signal R is input to the vehicle antitheft device 2, and thus the vehicle is prevented. Theft information signal stored in the memory unit 22 by the anti-theft device 2 operates, for example, voice theft information such as "Daegu 1-ga No. 1234 99 Year Sonata III is a stolen vehicle." After being modulated and amplified and propagated into space through the stolen signal transmitter 26 and the transmission antenna 28, an unspecified number of theft signal receivers 8 located in a radius of about 200 m to 300 m receive the theft signal R. The stolen vehicle can be easily identified on the basis of the continuously received information, so that the police officer can move quickly, then inspect and arrest and recover.

On the other hand, when the theft signal R is simultaneously transmitted from another vehicle 6 stolen in addition to the present vehicle 4 stolen in the audible reception area, interference or interference of the theft signal R may occur, resulting in poor reception or In the present invention, the vehicle 4 (or another vehicle) is stolen when the stolen vehicle 4 and the other vehicle 6 which are stolen simultaneously transmit the stolen signal R in the audible reception area. Before transmitting the theft signal R, the pilot signal P is sent out first so that no other vehicle (or the present vehicle) can send the theft signal R. Then, "Daegu 1-ga No. 1234 99-year-old white Sonata III It is a stolen vehicle. ”Theft signal R including the vehicle information is transmitted, and when the transmission of the theft signal R of the vehicle 4 is completed, the vehicle is waited in the dormant state, and the vehicle 4 is stolen. While waiting for the signal transmission, the other vehicle 6 may be accompanied by the pilot signal P. Since the process of transmitting the signal R is alternately repeated, the anti-theft signal R transmitted by the vehicle 4 and the other vehicle 6 in the audible reception area is transmitted with a time difference (time division method) and thus the anti-theft signal ( R) Poor reception due to interference or interference between each other is prevented.

That is, when the period (1 frame) in which the theft signal R is transmitted is 10 seconds, the pilot signal P is transmitted for about 0.5 seconds, and then the voice theft signal R is transmitted for about 4 seconds, and the voice theft signal ( Two or more stolen signals (R) are transmitted at the same frequency by transmitting a TONE for about 1 second before or after R) and not transmitting any signal including the carrier wave for the remaining 5.5 seconds. Even if it is sent out with a time difference, respectively, interference or interference between the theft signals (R) is prevented.

Therefore, the reception or reception of the stolen signal R is prevented, so that a nearby police officer who receives the stolen signal by the stolen signal receiver 8 can move to the stolen vehicle 4 to inspect, arrest and retrieve the stolen vehicle. Since the burglar signal R is continuously transmitted unless the state is released, the burglar vehicle 4 can be tracked to the end and arrested and recovered.

In addition, since information of the stolen vehicles 4 and 6 stored in the memory unit 22 is transmitted by radio waves, a walking patrol vehicle or a patrol vehicle carrying the stolen signal receiver 8 or mounted therein, or the stolen signal receiver 8 The stolen vehicle (4) can be obtained in detail by receiving the stolen signal (R) at the installed fixed checkpoint, temporary checkpoint, etc. (information of vehicle, vehicle number, year of production, color, model, etc.). (6) can be easily identified and moved quickly, so it can be effectively arrested and recovered, and the secondary crimes by the stolen vehicle (4) (6) are blocked, so the crime prevention effect is large and the stolen vehicle (4) can be easily arrested. As a result, the rate of arrest is high and efficient inspection and retrieval effects are achieved.

In addition, it is not only helpful to the public welfare, but also the efficient management of police personnel, which can reduce the cost and the simple inspection and retrieval of stolen vehicles (4) and (6). Most crimes by stolen vehicles can be eradicated.

In addition, the vehicle anti-theft device 2 according to the present invention is easy to install due to its small volume and light weight, and there is no installation problem since there is no exposed portion to the outside. ㆍ By changing the frequency of the receiver or adding the stolen signal reception function, it can be effectively used even in front line police at low cost.

As described above, when the theft signals R are simultaneously transmitted from the plurality of stolen vehicles 4 and 6 in the audible reception area, interference or reception failure between the theft signals R may occur. A waiting time (pause time) is provided between R) and the burglar signal R to allow another vehicle 6 to transmit the burglar signal R, and the burglar signal R from another vehicle 6 nearby. When the pilot signal (or the synchronization signal) is sent out before the vehicle is sent out first, the vehicle 4 stops transmitting the theft signal R, and the theft signal R of the other vehicle 6 and theft of the vehicle 6 are lost. Since the signals R are alternately transmitted, there is an effect of preventing interference or radio interference and poor reception of theft signals R simultaneously transmitted in the audible reception region.

That is, the theft signal R of the present vehicle (or another vehicle) and the time of theft of the other vehicle (or the present vehicle) by the pilot signal P transmitted immediately before the theft signal R is transmitted are the antitheft signal R of the vehicle (or the present vehicle). By synchronizing the waiting time, and simultaneously transmitting the stolen signal (R) with a time difference, there is an effect of preventing interference or interference between the stolen signals (R) and poor reception.

In addition, the vehicle anti-theft device 2 according to the present invention is easy to install due to its small volume and light weight, and there is no installation problem since there is no exposed portion to the outside. ㆍ By changing the frequency of the receiver or adding the stolen signal reception function, it can be used effectively even in front line police at low cost.

Claims (3)

When the theft signal R is transmitted by radio waves from the vehicle 4, 6 provided with the vehicle antitheft device 2, it is received by a nearby theft signal receiver 8, and the stolen vehicle is inspected and detected. 1. An anti-theft device capable of recovering a vehicle, comprising: a receiving unit 14 having an antenna 12 at an input of a control unit 10, an identification code unit 16 giving a unique identification code for each vehicle, and a clock generation The unit 18 and the pilot signal (P: pilot signal (or synchronous signal) immediately before the vehicle 4 sends the stolen signal R) transmit the stolen signal R alternately with the other vehicle 6. The pilot signal P generation unit (or synchronizing signal generation unit) 20 for transmitting, the memory unit 22 storing vehicle information for the theft signal R, and the theft signal R when the theft state is resolved. Theft release part 24 which can stop transmission, and the pilot signal P and theft signal R continue to be transmitted by radio wave RF until theft is released. Transmitting (26) the whole body of a vehicle theft prevention device, the signal sent out on a wireless hayeoseo composed of a transmitting antenna 28, which. 2. The vehicle according to claim 1, wherein when the vehicle 4 and the other vehicle 6 are located in the audible reception area, the pilot signal P is first transmitted before the vehicle 4 transmits the stolen signal R. Prevent the vehicle from transmitting the theft signal (R), and then transmit the theft signal (R) containing vehicle information such as "Daegu 1-ga No. 1234 99 Year Sonata III is a stolen vehicle." When the transmission of the theft signal R of 4) is finished, the vehicle waits in the dormant state and the other vehicle 6 transmits the pilot signal and theft signal R while the vehicle 4 is waiting for theft signal transmission. A device for preventing interference of a vehicle theft signal transmitted wirelessly, characterized in that to repeat the process alternately. The vehicle 4 transmits the pilot signal P for about 0.5 seconds when the time of one frame a is set to 10 seconds according to claim 1 or 2. After transmitting the stolen signal R for about 4 seconds and waiting about 5.5 seconds, the other vehicle 6 can transmit the pilot signal P (0.5 seconds) and the stolen signal R (4 seconds). An apparatus for preventing interference of a vehicle theft signal wirelessly transmitted.