JP2001146146A - Vehicle theft recognition device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To take back a stolen vehicle and arrest a suspected person simultaneously by informing the outside that it is a stolen vehicle without attracting his/her attention. SOLUTION: This device informs a person(s) outside the vehicle 42 that the vehicle is a stolen car without attracting the attention of a person who has stolen the vehicle. By receiving a report from a person who has recognized the stolen car, or making a policeman who is in a police box or a police car find the vehicle, it is possible to stop the vehicle 42 forcibly and arrest the suspected person. Conventional antitheft devices can protect individual vehicles from thefts, but cannot prevent theft. This system, is capable of arresting the suspected person, thus it is possible to prevent the recurrence of crimes.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle theft recognition device installed in a vehicle as one of the measures to be taken when the vehicle is stolen.

[0002]

2. Description of the Related Art Conventionally, theft of a vehicle often leads to further crimes, and prevention of theft of a vehicle has been proposed in various forms.

[0003] For example, on the manufacturer side, for example, Toyota Motor Corporation has already mounted a system called an immobilizer system on some vehicles as an anti-theft system.

The operation of this system is as follows.

A communication chip is embedded in a key, and an ID (identification code) is stored in the communication chip in advance. In addition,
It is preferable that the identification codes registered in the keys have different identification codes even if they have the same key shape.

On the other hand, a memory constituting a controller of the vehicle corresponding to the key stores a plurality of identification codes corresponding to driving the vehicle in advance.

[0007] A coil-shaped antenna is installed in the ignition key cylinder, and when the key is inserted into the ignition key cylinder, a current flows through the communication chip by electromagnetic induction to transmit an ID. This ID is received by the antenna and collated by the controller. If they match, the engine ignition or fuel injection is enabled, and if they do not match, these operations are prohibited.

[0008] According to the above system, even if an attempt is made to steal, the vehicle cannot move alone because the engine is not started, so that theft can be almost certainly prevented.

In the above, the theft is recognized when the key is inserted into the ignition key. In addition, when all the doors are locked, the door, the engine hood, the trunk, and the like are provided by a method other than the key or the wireless door lock. There is also a system that warns that there is a risk of being stolen around by blinking a hazard lamp and sounding a horn when any one of them is opened or the door is unlocked (automatic alarm system).

According to this, since the vehicle cannot enter the vehicle, theft is impossible.

[0011]

However, the above system aims at preventing theft.
You cannot capture anyone attempting to steal the vehicle. That is, even if the vehicle equipped with the system escapes theft, the next vehicle is targeted for theft, and if this vehicle does not have the theft system, it cannot be said that theft was objectively prevented. .

In view of the above facts, the present invention makes it possible to simultaneously recover a stolen vehicle and capture a suspect by not allowing a stolen person to recognize the stolen vehicle but externally recognizing the stolen vehicle. It is an object to obtain a vehicle theft recognition device that can.

[0013]

SUMMARY OF THE INVENTION The present invention provides a vehicle theft that predicts theft of a vehicle by inserting an unregistered key other than a previously registered key into an ignition key cylinder provided on the vehicle body side. Prediction means; and outside-vehicle recognition means for enabling normal operation of the vehicle when the vehicle prediction theft means predicts the theft of the vehicle, and for allowing a person other than the suspect to recognize the vehicle as a stolen vehicle. are doing.

According to the present invention, for example, an identification code (ID)
By registering the key with the like, inserting the key into the ignition key cylinder of the vehicle, collating the ID and recognizing that the key is registered, there is a possibility of theft. Can be determined.

Here, when the vehicle predictive theft means predicts theft, the outside-of-vehicle recognizing means makes it impossible for a person who intends to steal the vehicle (suspected person) to immediately recognize the vehicle and enables normal driving. A person other than the suspect, that is, a person outside the vehicle, is made aware of the stolen vehicle. This allows
By reporting to the police by a person outside the vehicle or witnessing a police officer directly when passing a police box or the like, the vehicle can be forcibly stopped and the fact of theft can be confirmed. At that time, the suspect can be captured.

[0016] Since theft of a vehicle leads to a more serious crime by theft of the vehicle, the prevention of theft alone results in the target of another vehicle, which is a system aimed at capturing suspects. The present invention is an effective means.

Here, after the vehicle theft predicting means predicts the theft of the vehicle, a predetermined condition is cleared, and then the outside-of-vehicle recognizing means is operated.

[0018] Thereby, the suspect is given an opportunity to drive the vehicle, so that the crime can be surely proved.

The predetermined condition is that the speed of the vehicle is a lower limit value. That is, for example, when the speed of the vehicle exceeds 5 to 10 km / hour, the theft is predicted by the vehicle theft prediction means for the first time.

In the above invention, the vehicle theft predicting means reads an identification code registered in advance on a key inserted into an ignition key cylinder of the vehicle,

Collation means for collating whether the identification code read by the reading means is an identification code registered in advance in the vehicle; and collation by the collation means, wherein the identification code read from the key is registered in the vehicle in advance. Output means for outputting a theft signal indicating that there is a possibility of theft when the identification code does not match.

That is, the identification code of the key possessed by the holder is stored on the vehicle side, and is compared with the identification code read from the key inserted into the ignition key cylinder to judge whether there is a possibility of theft. By outputting a theft signal when there is a possibility of theft, the outside-of-vehicle recognition means can be operated quickly and accurately.

Further, the outside-of-vehicle recognizing means is provided on a part of the exterior of the vehicle, and is a display board for displaying that the vehicle is a stolen vehicle when the theft-predicting means predicts the theft. And

Since the display board is visible only from outside the vehicle, it is possible to notify the outside of the vehicle without being noticed by the suspect during driving.

Further, the display plate is shared with a license plate, displays a number in a normal state, and indicates that the vehicle is a stolen vehicle when a theft is predicted.

That is, it is shared with an existing license plate for so-called camouflage, which does not recognize that there is a display plate for displaying the theft before stealing the vehicle.

Further, the display panel is provided on a rear window glass, and indicates to a person located behind the vehicle that the vehicle is a stolen vehicle.

This is also similar to the license plate,
A stop lamp or the like is often installed on the rear window glass, and the rear window glass may be shared with the stop lamp. Alternatively, a transparent liquid crystal display device, which is usually transparent, may be provided on a part or the whole of the rear window glass, and when the possibility of theft is recognized, characters may be expressed by a liquid crystal display.

In the present invention, if the outside the vehicle recognizes the stolen vehicle by a person other than the stolen person and recognizes that the vehicle is a stolen vehicle, and if the theft continues even after a lapse of a predetermined time, the suspicious person is also identified. It is characterized by further comprising a notifying means for notifying including the information.

In the present invention, since the theft may be permitted even temporarily, it is preferable to activate a notifying means of a well-known technique when driving by the suspect is continued for a predetermined time. In other words, by providing a separate means to avoid theft, such as sounding an alarm or stopping the fuel injection to forcibly suppress driving, the vehicle can be transported to a remote place, further developing crime. Can be prevented.

[0031]

FIG. 1 is a control block diagram of a vehicle theft recognition apparatus 10 according to the present embodiment.

The original key 12 possessed by the vehicle owner includes:
The communication chip 14 is embedded in the grip portion 12A formed of resin. The communication chip 14 is an IC chip capable of transmitting a pre-registered identification code (ID) when a current flows, and power is provided to an ignition key cylinder (hereinafter referred to as an IG key cylinder) 16. The antenna is received from a ring-shaped antenna unit 18.

The antenna section 18 includes the IG key cylinder 16
The key wire is provided at the side end of the key insertion slot 16A, and a conductive wire 18A is spirally wound inside in a coil shape. The antenna section 18 allows a predetermined voltage (12 V) to flow from the power supply circuit 20 when the key 12 is inserted into the key insertion slot 16 </ b> A of the IG key cylinder 16. Here, when a current flows through the antenna unit 18, an electromotive force is generated in the communication chip 14 on the key 12 side by electromagnetic induction, and the ID stored in the communication chip 14 can be transmitted. Has become.

The transmitted ID is transmitted from the antenna unit 18
The signal is input to the theft prediction controller 24 via the amplifier 22.

The theft prediction controller 24 operates when a predetermined voltage (5 V) is input from the power supply circuit 20. This theft prediction controller 2
4 incorporates a microcomputer 26.

The microcomputer 26 includes a CPU 2
8, a RAM 30, a ROM 32, an I / O port 34, and a bus 36 such as a data bus or a control bus connecting these. The I / O port 34 has an A / D
A converter 38 is connected. An ID signal input through the amplifier 22 is input to an I / D converter 38 via an A / D converter 38.
An input is made to the O port 34.

The I / O port 34 has a driver 4
0 is connected to the display device 42. The driver 40 is supplied with power from the battery of the vehicle, and the display device 42 receives the supply of power from the driver 40 and, based on a signal from the theft prediction controller 24, the vehicle 40 described later. Is displayed to notify that the vehicle is a stolen vehicle. In addition,
The display device 42 has its own display controller (not shown).
The registration number of the vehicle is normally displayed.

The display device 42 is provided as a front license plate 46 and a rear license plate 48 of the vehicle 44 shown in FIGS.

That is, a normal license plate functions as a license plate by raising letters and symbols on a metal plate by drawing or the like and color-coding the raised letters and the like and the base.

However, as shown in FIG. 4, the license plates 46 and 48 according to the present embodiment have a configuration in which the display device 42 is interposed between a base 50 for attachment to a vehicle 44 and a transparent protective cover 52. Has become. Note that a liquid crystal display device is applied to the display device 42 of the present embodiment.

FIG. 5A is a sectional view of license plates 46 and 48 according to the present embodiment. On the mounting base 50, a backlight unit 54 is provided. The backlight unit 54 includes the reflecting plate 5
6, a light guide plate 58, a prism sheet 60, and a diffuser plate 62. The light from the light source 64 disposed at the end is reflected by approximately 90 ° and transmitted through the uppermost transparent protective cover 52. ing.

In the upper layer of the backlight unit 54, there is provided a liquid crystal unit 70 (detailed later) sandwiched between a pair of polarizing plates 66, 68, and finally, the transparent protective cover 52.

The liquid crystal section 70 includes a pair of glass substrates 7.
2, 74, and the glass substrate 7
2 and 74, between the lower layer of FIG.
6 (TF for supplying power to each pixel of the display electrode layer 76)
T78), alignment film 80, common electrode layer 82, protective film 84,
A color filter layer 86 is provided on each pixel, and a black matrix layer 88 is provided between each pixel. Liquid crystal 90 is sealed between the display electrode layer 76 and the common electrode layer 82, and is sealed by a spacer 92.

Here, by passing a predetermined current from the TFT 78 to each pixel, the transmittance of light is polarized for each pixel, and basically, 256 gradations can be expressed for each color. It has become.

In the above-mentioned TFT type liquid crystal display device, since the gap between the electrodes can be formed thin, the field of view is greatly widened, and the display content can be confirmed at a wide angle. Normally, the registration number of the vehicle 44 is displayed on the license plates 46 and 48 constituted by such a liquid crystal display device (see FIG. 6A).

However, as a result of collation of the IDs by the theft prediction controller 24, when it is determined that they do not match (I
D including no input), the theft prediction controller 24
The display of the license plates 46 and 48 is switched to, for example, the characters "theft" (FIG. 6).
(B)). Since the character switching is performed by the pixels of the dot matrix, the character switching can be performed instantaneously as in a normal display device. Further, in addition to the character display, it is possible to easily blink a conspicuous color such as red.

Here, the license plates 46, 48
Although it can be confirmed from outside the vehicle 44, it cannot be confirmed from inside the vehicle 44. For this reason, the suspect who is trying to steal the vehicle 44 will continue driving without noticing anything. For this reason, a report from a witness outside the vehicle 44 is sent to the police by passing a police box or the like to inform the police that the vehicle has been stolen, and the vehicle is forcibly stopped by a check or the like, and the vehicle is recovered. At the same time, the suspect can be captured.

Hereinafter, the operation of the present embodiment will be described with reference to the flowchart of FIG.

In step 100, first, a variable n is set to 1, and then in step 102, the number N of IDs registered in the ROM 32 of the theft prediction controller 24 is read. Normally, when a new car is purchased, about three keys are attached, but since all three have different IDs stored in the embedded communication chip 14, all of these different IDs are stored. If the key is lost or a new key is ordered, the key is added or deleted.

In the next step 104, it is determined whether or not the key 12 has been inserted into the key insertion hole H16A of the IG key cylinder 16. This may be achieved by providing a sensor for determining insertion of the key 12 in the key insertion slot 16A of the IG key cylinder 16 or detecting that a current has flowed through the coil of the antenna section 18 (the core moves in the coil). Then use the rule that current flows through the coil.)

If an affirmative determination is made in step 104, that is, if it is determined that the key 12 has been inserted, the flow proceeds to step 106, in which a current flows through the communication chip 14, whereby a previously stored ID signal is transmitted from the communication chip 14. Is done.

At step 108, it is determined whether or not the ID signal has been received by the antenna unit 18. Here, if a negative determination is made, the reception of the ID signal by the antenna unit 18 is waited until a predetermined time has elapsed in step 110. However, if the ID signal is not received even after the lapse of the predetermined time, it is determined that a key different from the previously registered key 12 (a key in which the communication chip 14 is not embedded) is inserted, and the theft prediction controller is determined. At 24, the process proceeds to step 112 to output a theft signal, and then proceeds to step 114.

On the other hand, if the ID signal is received in step 108, the process proceeds to step 116 and the ROM
The first ID stored in 32 is read out, and then in step 118, the key-side and vehicle-side IDs are collated. As a result of this collation, when it is determined that they do not match, the process proceeds to step 120, where the number of registered IDs is compared with the number of times of reading n. If N> n is determined in this comparison, it is determined that the registered ID still remains, and step 1
After moving to 22, the variable n is incremented, and the process returns to step 116, where the n-th (for example, the second after the first) collation is performed at step 118. Also,
If it is determined in step 118 that both IDs match, it is determined that the inserted key 12 is the original key 12 and there is no fear of theft, and the process proceeds to step 114.

In step 120, N ≦ n,
That is, when it is determined that the matching with all the registered IDs is completed, the ID received from the key 12 is
It is determined that the key is not the original key 2 and the process proceeds to step 124 to output a theft signal, and then proceeds to step 114.

In step 114, it is determined whether or not the key 12 has been removed from the IG key cylinder 16. If the determination is affirmative, the routine ends.

Next, control of the display device 42 when a theft signal is output will be described.

When the theft signal is output, this signal is sent to the display device 42 via the driver 40. Display device 4
2 has its own display controller, and usually displays the registration number of the vehicle (see FIG. 6A).
In this state, when a theft signal is input, prestored image information for theft is read out, the transmission density of each pixel of the liquid crystal display is controlled, and an image based on the image information is “stolen” Is displayed (see FIG. 6B).

As described above, according to the present embodiment, when the vehicle 42 is stolen, a person outside the vehicle 42 is stolen so that the stolen person does not notice it. It is possible to notify that it is inside. For this reason, a report from a person who recognizes that the vehicle is being stolen, or a police box or a patrol car being watched by a police officer, discovers that the vehicle 4
2 can be forcibly stopped, and the suspect can be captured. At the same time, the vehicle can be recovered.

That is, in a conventional anti-theft system, theft of an individual's vehicle is avoided, but the next target vehicle cannot be prevented from being stolen. Because it is possible, it leads to prevention of recurrence of crime.

In this embodiment, the license plate 4 having a function as a liquid crystal display device as a display device is provided.
Instead of or in combination with these, a stop lamp 42S (both shown in FIG. 3) attached to the rear window glass 42R of the vehicle 42 indicates that the vehicle is being stolen when a theft signal is output (see FIG. 3). (It may be characters or blinking may be repeated). Further, a liquid crystal display device may be provided in a part of the rear window glass 42R so that the liquid crystal display device is normally in a completely transparent state, and the display of “theft” is performed when a theft signal is output.

In this embodiment, the license plates 46 and 48 are displayed on a liquid crystal display. However, as shown in FIG. 8, a long screen 94 on which two types of display are performed in advance.
Is prepared, and is wound around a pair of winding rollers 98 provided at both ends of the base 96.
A so-called mechanical structure may be used in which the display contents are switched by selectively rotating in the normal and reverse directions with the driving force of a driving unit (not shown).

Further, in the present embodiment, the communication chip 14 is embedded in the key 12, and when the key 12 is inserted into the key insertion slot 16A of the IG key cylinder 16, the ID is collated. If the ID is not input within a predetermined time after the insertion of the key 12, it is determined that there is an abnormality, and the key 12 is turned in the direction opposite to the normal rotation direction, held for several seconds, and then the normal key operation is performed. It may be stored in a memory, and the collation may be performed by other means, such as determining that an abnormality has occurred when an operation procedure different from this operation procedure is performed.

In this embodiment, the basic system configuration and its operation and effect have been described. However, the following embodiments can be considered. Add a condition to output a theft signal.

For example, if the key 12 inserted into the key insertion slot 16A of the IG key cylinder 16 is not a registered key, the vehicle does not immediately output a theft signal, and the traveling speed of the vehicle 42 becomes 5 km / hour or more. Output when Alternatively, it is output when the vehicle 42 has traveled 1 km or more.

According to this, it becomes easy to prove that the vehicle 42 has been stolen. Even if a predetermined time (for example, about one hour) has elapsed since the theft signal was output, if there was no notification, the horn was sounded, and the suspect was stolen in a form that could be understood by the suspect. Notify.

As a result, it is possible to prevent the vehicle 42 from being stolen for a long period of time. Even if the suspect cannot be captured, at least the vehicle 42 should be dropped off relatively near the stolen point. And the vehicle 42 can be recovered.

[0067]

As described above, the vehicle theft recognition apparatus according to the present invention does not allow the stolen person to recognize the stolen vehicle but externally recognizes that the vehicle is a stolen vehicle, so that the stolen vehicle can be recovered and the suspected vehicle can be recovered. Has the excellent effect that it is possible to simultaneously perform the capture of

[Brief description of the drawings]

FIG. 1 is a schematic block diagram of a vehicle theft recognition device according to the present embodiment.

FIG. 2 is a perspective view of the vehicle as viewed obliquely from the front.

FIG. 3 is a perspective view of the vehicle as viewed obliquely from behind.

FIG. 4 is an exploded perspective view of a license plate according to the present embodiment.

5A is a cross-sectional view of a TFT liquid crystal display device applied as a display device, and FIG. 5B is a partial cross-sectional view of one pixel in FIG. 5A.

FIG. 6A is a front view of a license plate during normal display, and FIG. 6B is a front view of a license plate during abnormal display.

FIG. 7 is a control flowchart of the vehicle theft recognition device according to the present embodiment.

FIG. 8 is a perspective view of a screen scroll type display device according to another embodiment of the display device.

[Explanation of symbols]

 Reference Signs List 10 vehicle theft recognition device 12 key 14 communication chip 16 key cylinder 18 antenna unit 24 theft prediction controller 42 vehicle 42 display device 46 front license plate 48 rear license plate 70 liquid crystal unit

Claims (8)

[Claims] 1. A vehicle theft estimating means for estimating vehicle theft by inserting an unregistered key other than a pre-registered key into an ignition key cylinder provided on a vehicle body side; If the vehicle predicts the theft by means,
A vehicle theft recognition device comprising: an outside-of-vehicle recognition unit that enables the vehicle to operate normally and causes a person other than the suspect to recognize that the vehicle is a stolen vehicle. 2. The vehicle theft recognizing device according to claim 1, wherein after the vehicle theft predicting means predicts the theft of the vehicle, a predetermined condition is cleared, and then the external recognition means is activated. 3. The vehicle theft recognition device according to claim 2, wherein the predetermined condition is that a speed of the vehicle is a lower limit value. 4. An identification code reading means for reading an identification code registered in advance on a key inserted into an ignition key cylinder on a vehicle side, wherein the identification code read by the reading means is provided to the vehicle in advance. A verification unit that verifies whether the identification code is a registered identification code; and a verification performed by the verification unit indicates that there is a possibility of theft if the identification code read from the key does not match the identification code registered in advance in the vehicle. The vehicle theft recognition device according to any one of claims 1 to 3, further comprising: an output unit that outputs a theft signal. 5. The vehicle outside recognition means is provided on a part of the exterior of the vehicle, and is a display plate for displaying that the vehicle is a stolen vehicle when the theft prediction means predicts the theft. The vehicle theft recognition device according to any one of claims 1 to 4, wherein 6. The vehicle according to claim 5, wherein the display plate is shared with a license plate, displays a number in a normal state, and indicates that the vehicle is a stolen vehicle when the vehicle is predicted to be stolen. Theft recognition device. 7. The vehicle according to claim 5, wherein the display plate is provided on a rear window glass and indicates to a person located behind the vehicle that the vehicle is a stolen vehicle. For theft recognition device. 8. The outside-of-vehicle recognizing means allows a person other than the stolen person to recognize that the vehicle is a stolen vehicle, and if the burglary continues even after a lapse of a predetermined time, a notification is made including the suspect. The vehicle theft recognition device according to any one of claims 1 to 7, further comprising a notification unit.