JP3661538B2 - Abnormal use determination device for moving body and anti-theft device using the same - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an abnormal use determination device for a moving body and an antitheft device using the same, and more specifically, when a first predetermined signal is received or when a predetermined mechanical operation is performed, the door of the moving body is opened. An apparatus for determining abnormal use of a moving body having a door lock unlocking means for locking and unlocking, and an operation permission means for permitting operation of the moving body when a second predetermined signal is received, and a moving body using the same The present invention relates to an anti-theft device for preventing theft of a person.
[0002]
[Prior art]
Conventionally, an abnormal use determination device for this type of moving body has been designed to receive a predetermined signal from a key having a built-in transponder chip that outputs a predetermined signal in response to an electromagnetic field generated from a vehicle. A device that permits start-up, which generates a weak electromagnetic field that is insensitive to normal key usage while the engine is stopped, and that is regarded as unauthorized use when a predetermined signal is received in response to this weak electromagnetic field. (For example, JP-A-10-278743). In this device, it is assumed that the transponder chip is extracted from the key, and the vehicle is used with an illegally copied key that is pasted in the vicinity of the receiving unit that receives a predetermined signal from the transponder chip of the vehicle. Such cases are determined as unauthorized use. And when it determines with unauthorized use, use of a predetermined signal concerned is prohibited, or starting of an engine is prohibited, and theft of a vehicle is prevented.
[0003]
[Problems to be solved by the invention]
However, in such an abnormal use determination device of the conventional example, an electromagnetic field output switching unit that switches the strength of the electromagnetic field to be generated is required, and the configuration of the device itself becomes complicated. Further, depending on the position where the extracted transponder chip is pasted, there are cases where unauthorized use cannot be determined. That is, this is a case where a transponder chip is attached to a position sensitive to a normal electromagnetic field and not sensitive to a weak electromagnetic field.
[0004]
One object of the apparatus for determining abnormal use of a moving body according to the present invention is to determine abnormal use of a moving object without complicating the configuration of the apparatus. Another object of the apparatus for determining abnormal use of a moving body of the present invention is to determine abnormal use of a moving object with high accuracy. Furthermore, an object of the abnormal use determination apparatus for a moving body of the present invention is to determine the possibility of abnormal use of the moving body. The object of the anti-theft device for a moving body of the present invention is to accurately prevent the theft of the moving body.
[0005]
[Means for solving the problems and their functions and effects]
In order to achieve at least a part of the above object, the abnormal use determination device for a moving body and the antitheft device using the same of the present invention employ the following means.
[0006]
The mobile body abnormal use determination device of the present invention is
Door lock unlocking means for locking and unlocking the door of the moving body when a first predetermined signal is received or when a mechanical predetermined operation is performed, and the movement when a second predetermined signal is received An apparatus for determining abnormal use of a mobile object having operation permission means for permitting the operation of the body,
Unlocking method determination means for determining whether unlocking of the door is due to reception of the first predetermined signal or mechanical predetermined operation;
The gist is provided with an abnormal use determining means for determining abnormal use of the moving body based on the determined unlocking method and the second predetermined signal.
[0007]
In the abnormal use determination apparatus for a moving body according to the present invention, a second unlocking method is used to permit the door to be unlocked by receiving a first predetermined signal or by a predetermined mechanical operation, and permitting operation of the moving body. The abnormal use of the moving body can be determined based on the predetermined signal. Here, “abnormal use” includes use different from normal use such as unauthorized use, and also includes use that may be used differently from normal use.
[0008]
In such an abnormal use determination apparatus for a moving body of the present invention, the abnormal use determination means determines that the unlocking method is based on the predetermined mechanical operation over a predetermined number of times, and the second signal determines the When the operation of the moving body is permitted, it may be a means for determining that the moving body is abnormally used. That is, the abnormal use of the moving body is determined when the door is unlocked and used by a predetermined mechanical operation for a predetermined number of times without receiving the first predetermined signal. In this way, it is possible to determine the use of the moving body by a predetermined mechanical operation using an illegally copied key.
[0009]
In the abnormal use determination apparatus for a moving body according to the present invention, the plurality of signals as the first predetermined signal and the plurality of signals as the second signal paired with the plurality of signals are related to each other. Signal storage means for storing, and the abnormal use determination means unlocks the door of the moving body when the unlock method determination means determines that the unlock method is due to reception of the first predetermined signal. The first predetermined signal used at the time and the second predetermined signal used when obtaining permission for operation of the moving body constitute a pair of signals stored in the signal storage means. It can also be a means for determining abnormal use of the moving body based on whether or not it is. If it carries out like this, use of the moving body by the 1st predetermined signal and 2nd predetermined signal which do not comprise a pair of signal can be determined as abnormal use. In the abnormal use determination apparatus for a moving body of the present invention according to this aspect, the abnormal use determination means includes the first predetermined signal used when unlocking the door of the moving body and permission for operation of the moving body. Means for determining abnormal use of the moving body when the second predetermined signal used in determining the signal does not constitute a pair of signals stored in the signal storage means for a predetermined number of times. It can also be. In this way, it is possible to more accurately determine abnormal use of the moving body.
[0010]
In the abnormal use determination apparatus for a moving body according to the aspect of the present invention in which the abnormal use of the moving body is determined based on the determination over a predetermined number of times, the predetermined number of times is determined by receiving the first predetermined signal. It may be the number of times set as the number of times of unlocking the door by the predetermined mechanical operation expected for the failure of the lock until the recovery of the failure.
[0011]
The abnormal use determination apparatus for a moving body of the present invention may further include a determination result output means for outputting the determination result when the abnormal use determination means determines that the mobile object is abnormally used. . In this way, it is possible to know the abnormal use of the moving body and its possibility. The determination result output method includes various methods such as output by voice, output by display of images and characters, and lighting output of an indicator.
[0012]
In addition, in the apparatus for determining abnormal use of a moving body according to the present invention, the moving body is an automobile, and the door lock unlocking means includes a transmitter capable of transmitting the first predetermined signal and the mechanical predetermined value. The operation permission means includes an electromagnetic field generation means for generating a predetermined electromagnetic field, and outputs the second predetermined signal in response to the generated electromagnetic field. It may be a means corresponding to the signal from the transponder chip. In this way, abnormal use of the automobile can be determined effectively.
[0013]
The anti-theft device for mobile objects of the present invention is
An anti-theft device for preventing theft of a moving object,
The abnormal use determination device for a moving body of any one of the aspects of the present invention,
The gist includes an abnormal use control unit that prohibits a predetermined operation of the moving body when the abnormal use determining unit included in the abnormal use determining device determines that the moving body is abnormally used.
[0014]
In the anti-theft device for a moving body of the present invention, the abnormal use control means prohibits a predetermined operation of the moving body when the abnormal use of the moving body is determined by the abnormal use determining device for the moving body of the present invention. . That is, the theft of the moving body is prevented by prohibiting the normal operation. Since the abnormal use determination apparatus for a moving body of the present invention more appropriately determines the abnormal use of the moving body, it is possible to cope with the abnormal use of the appropriate moving body.
[0015]
In such a mobile theft prevention device of the present invention, the abnormal use control means may be a means for prohibiting permission of operation of the mobile body.
[0016]
Further, in the mobile antitheft device according to the present invention, the abnormal use determination device is an abnormal use determination device having a signal storage means, and the paired signals stored in the signal storage means are added or changed. The memory signal addition / change means may be provided, and the abnormal use control means may be means for prohibiting addition or change of the paired signals by the storage signal addition / change means. In this way, it is possible to prevent the abnormal use of the moving body from being changed to normal use.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described using examples. FIG. 1 is a configuration diagram showing an outline of the configuration of a vehicle antitheft device 30 according to an embodiment of the present invention. As shown in the figure, the vehicle anti-theft device 30 according to the embodiment includes a wireless control module 40 that receives a wireless ID signal transmitted from a signal generation IC 24 built in the wireless key 22 and collates the wireless ID, and a wireless control module 40. An immobilizer control module 50 that outputs a drive permission signal for the engine of the vehicle based on the immobilizer id signal transmitted from the transponder chip 28 built in the key 22 and the control signal from the wireless control module 40 is provided.
[0018]
Although not shown, the wireless control module 40 and the immobilizer control module 50 each include a microcomputer centered on a CPU. In addition to the CPU, this microcomputer includes a ROM for storing processing programs, a RAM for temporarily storing data, an EEPROM for storing data, an input / output port, and the like.
[0019]
The wireless control module 40 further includes a wireless antenna 42 for receiving a wireless ID signal transmitted from the signal generation IC 24 of the wireless key 22. Further, a RAM or EEPROM of the microcomputer provided in the wireless control module 40 is provided with a wireless ID storage area 44 for storing wireless IDs for a plurality of keys. A control signal to the door lock control module 60 is output from the output port of the microcomputer included in the wireless control module 40.
[0020]
The wireless control module 40 configured in this manner receives the wireless ID signal transmitted from the signal generation IC 24 of the wireless key 22 by the wireless antenna 42 and demodulates the received wireless ID signal to the wireless ID storage area. 44 matches with any of the wireless IDs stored in 44, and outputs a control signal to the door lock control module 60 that controls the locking and unlocking of the doors at the time of checking and immobilizer control using the wireless ID as a signal. Output to module 50. The door lock control module 60 to which the control signal is input performs control such as unlocking when the door is in the locked state and blinking the hazard for the number of times indicating unlocking, and locking and notifying the hazard when the door is in the unlocked state. Control such as blinking as many times as indicating the lock.
[0021]
The immobilizer control module 50 receives an immobilization id signal transmitted from the electromagnetic field generation circuit 52 for generating a predetermined electromagnetic field and the transponder chip 28 built in the wireless key 22 in response to the electromagnetic field. And an antenna 54. The transponder chip 28 built in the wireless key 22 outputs an immobilizer id signal in response to a predetermined electromagnetic field generated by the electromagnetic field generating circuit 52. Therefore, the immobilizer control module 50 senses the transponder chip 28 built in the wireless key 22 by generating a predetermined electromagnetic field in the electromagnetic field generation circuit 52 and immobilizes the immobilizer id signal output from the transponder chip 28. It can be received by the antenna 54. In addition, the microcomputer RAM or EEPROM provided in the immobilizer control module 50 is provided with an immobilizer storage area 56 for storing a wireless ID, an immobilizer id, and a counter C assigned to each key in association with a plurality of keys. Yes. In addition, an input / output signal of a vehicle door, a lock position signal indicating a door lock state, and the like are input to an input port of the microcomputer included in the immobilizer control module 50. Further, a drive signal to the indicator 58, a control signal to the engine control module 70, and the like are output from an output port of the microcomputer included in the immobilizer control module 50.
[0022]
The immobilizer control module 50 configured as described above generates a predetermined electromagnetic field in the electromagnetic field generation circuit 52 and also receives an immobilization id signal transmitted from the transponder chip 28 of the wireless key 22 in response to the generation of the electromagnetic field. The wireless ID output from the wireless control module 40 is verified by checking whether the immobilizer id received by the receiver 54 and demodulating the received immobilizer id signal matches any of the immobilizer ids stored in the immobilizer storage area 56. And a control signal is output to the engine control module 70 based on the counter C. The engine control module 70 to which the control signal is input performs control to drive the engine in accordance with an instruction of the operator when the control signal is an engine drive permission signal, and instructs the operator when the control signal is an engine drive prohibition signal. Regardless of the control, the engine is prohibited from being driven.
[0023]
The wireless key 22 also includes a battery 26 as a power source for transmitting a wireless ID signal from the signal generation IC 24. The wireless key 22 also includes a key body 21 that can be locked or unlocked by being inserted directly into the keyhole of the door and rotated in a predetermined direction by a predetermined angle.
[0024]
Next, the operation of the vehicle antitheft device 30 of the embodiment configured in this manner will be described. FIG. 2 is a flowchart illustrating a processing program executed by a computer included in the immobilizer control module 50. When the processing program is executed, the CPU of the computer first determines whether or not a wireless ID signal is transmitted from the signal generation IC 24 of the wireless key 22 and the wireless control module 40 collates the wireless ID (step S100). ). This determination can be made by reading a signal output from the wireless control module 40 to the immobilizer control module 50. In the embodiment, this signal is a signal of a wireless ID that is collated when the wireless ID is collated by the wireless control module 40, and a signal of a default value when the wireless ID is not collated by the wireless control module 40.
[0025]
When the wireless control module 40 does not verify the wireless ID, it is determined whether or not the door lock state has changed from the locked state to the unlocked state (step S102), and the door state is changed from the closed state to the open state. It is determined whether or not it has changed (step S104). In the embodiment, the door lock state change determination process is performed by reading a lock position signal, and the door state change determination process is performed by reading a door open / close signal.
[0026]
When it is determined that the door has changed from the locked state to the unlocked state and the door has changed from the closed state to the open state, that is, the door is operated by a mechanical predetermined operation by the key body 21 of the wireless key 22. Is unlocked and opened, the immobilizer antenna 54 receives the immobilizer id signal transmitted from the transponder chip 28 in response to the predetermined electromagnetic field generated by the electromagnetic field generator 52, and the received immobilizer id signal. A verification process is performed to determine whether the immobility id obtained by demodulating this matches any immobility id stored in the immobility storage area 56 (step S106). When the immobilizer id is verified, the counter C stored in the immobilizer storage area 56 is incremented in relation to the verified immobilizer id (step S108), and the counter C corresponding to the verified immobilizer id is compared with the specified value. (Step S110). Here, the specified value is determined when the door cannot be unlocked depending on the wireless ID signal transmitted from the signal generation IC 24 of the wireless key 22 due to the failure of the door lock control module 60 or the battery 26 of the wireless key 22 being out of battery. It is set as the number of times of unlocking the door by a predetermined mechanical operation by the key body 21 that is expected until the repair of the failure or the replacement of the battery 26, and is determined by the purpose of the vehicle and the usage form.
[0027]
When the counter C is smaller than the specified value, it is determined that the vehicle is not abnormally used and the immobilizer is released, that is, the engine drive permission signal is output to the engine control module 70 as a control signal (step S112), and the processing program is terminated. To do.
[0028]
On the other hand, when the counter C is equal to or greater than the specified value, it is determined that the vehicle is abnormally used, and registration of a new immobilizer id in the immobilizer storage area 56 or change of the registered immobilizer id is prohibited (step S114). Use is output (step S116), it is determined that the vehicle is abnormally used, and the routine is terminated without releasing the immobilizer. Since the immobilizer is not released, that is, the engine drive prohibition signal is maintained as a control signal output from the engine control module 70, it is possible to prohibit the start of the engine and prohibit the abnormal use of the vehicle.
[0029]
When it is determined in step S102 that the door lock state has not changed from the locked state to the unlocked state, or in step S104 it is determined that the door has not changed from the closed state to the open state, or If the immobilizer id is not verified in S106, this routine is terminated without releasing the immobilizer.
[0030]
When the wireless ID is verified in step S100, the counter C stored in the immobilizer storage area 56 is reset in relation to the verified wireless ID (step S118), and the received immobilizer id signal is demodulated. A collation process is performed to determine whether the immobilizer id matches any of the immobilizer ids stored in the immobilizer storage area 56 (step S120). Then, when the immobilizer id is collated, it is determined whether or not the collated imobiid and the wireless ID collated in step S100 are stored in association with the immobilizer storage area 56 (step S122). . That is, it is determined whether or not the verification is based on the immobilizer id signal transmitted from the transponder chip 28 incorporated in the wireless key 22 that unlocks the door. If it is determined that the wireless ID and the immobilizer id are stored in association with each other, the processing after step S110 is performed. In this case, since the counter C is reset, it is determined that the counter C is smaller than the specified value, and the immobilizer is released. On the other hand, if it is determined that the wireless ID and the immobilizer id are not stored in association with each other, the door is unlocked based on the wireless ID signal transmitted from the signal generation IC 24 built in the wireless key 22. However, it is determined that the verification using the immobilizer id signal transmitted from the transponder chip 28 built in the wireless key 22 used for unlocking has not been performed, and it is determined that there is a possibility of abnormal use of the vehicle. To do. In this case, the counter C associated with the collated imobi id is incremented, and the counter C is compared with a specified value.
[0031]
Consider a case where the transponder chip 28 is taken out from the wireless key 22 and pasted in the vicinity of the immobilizer antenna 54 of the immobilizer control module 50, and a duplicate of the wireless key 22 is illegally created. When a legitimate user unlocks the door wirelessly using the wireless key 22 and starts the engine, the immobilizer id is verified by the transponder chip 28 attached in the vicinity of the immobilizer antenna 54 in the process of step S120. At this time, since the collated imobiid is not related to the wireless ID when the door is unlocked, the counter C associated with the collated imobiid is incremented, and eventually the value becomes equal to or greater than the specified value, and the indicator 58 The legitimate user can know the possibility of abnormal use of the vehicle, that is, the state where the transponder chip 28 is attached in the vicinity of the immobility antenna 54 by lighting up. Then, an appropriate measure such as removing the attached transponder chip 28 can be performed. On the other hand, when the engine is started by unlocking the door by a predetermined mechanical operation using the illegally copied key, the immobilizer id 28 is attached to the immobilizer antenna 54 in the vicinity of the immobilizer antenna 54 in the process of step S106. Are matched. At this time, since the counter C related to the verified immobilizer id is incremented, the value of the counter C eventually becomes equal to or greater than a specified value, and the immobilizer is not released, and the operation of the vehicle can be prohibited. In addition, since the new registration or change of the immobilizer id is prohibited, subsequent use of the vehicle can be prohibited.
[0032]
According to the vehicle anti-theft device 30 of the embodiment described above, abnormal use of the vehicle can be prohibited and the possibility of abnormal use of the vehicle can be found in advance. In addition, when it is determined that the vehicle is abnormally used, new registration or change of the immobilizer id is prohibited, so that use of the vehicle other than the regular wireless key 22 can be prohibited.
[0033]
In the vehicle antitheft device 30 according to the embodiment, when the door is unlocked and opened by a predetermined mechanical operation of the key body 21 of the wireless key 22 and the immobilizer ID is collated, it is related to the collated imobiid. The counter C is incremented and the immobilizer is not released when the counter C exceeds a specified value. However, the door is unlocked by a predetermined mechanical operation of the key body 21 of the wireless key 22. When the immobilizer id is verified, the immobilizer may not be immediately released.
[0034]
Further, in the vehicle anti-theft device 30 of the embodiment, when it is determined that the door is wirelessly unlocked and the collated immobilid is not related to the collated wireless ID, the collated immobilizer id is displayed. The associated counter C is incremented, and the indicator 58 is turned on and the immobilizer is not released when the counter C reaches a specified value or more. However, the collated immobilizer id and the collated wireless ID are When it is determined that the information is not relevant, the indicator 58 may be turned on immediately. In this case, the immobilizer may or may not be released.
[0035]
Further, in the vehicle anti-theft device 30 of the embodiment, whether the door is unlocked and opened by a predetermined mechanical operation of the key body 21 of the wireless key 22 and whether the immobilizer ID is verified. However, it may be determined whether or not the immobilizer ID has been verified without verifying the wireless ID.
[0036]
Further, in the vehicle antitheft device 30 of the embodiment, when it is determined that the vehicle is abnormally used, the new registration or change of the immobilizer id is prohibited, but it may not be prohibited. Even if the counter does not reach the specified value, it may be considered that there is a possibility of unauthorized use, and while the counter is counting, the release of the immobilizer is not prohibited, but only new registration or change may be prohibited. Furthermore, in the vehicle antitheft device 30 of the embodiment, the indicator 58 is turned on as an abnormal use output when it is determined that the vehicle is abnormally used. In the case of providing an output, sounding an alarm, or providing a display screen, an abnormal use of the vehicle may be displayed by characters or images.
[0037]
The vehicle antitheft device 30 of the embodiment has been described as determining the abnormal use of the vehicle and preventing the vehicle from being stolen, but determines the abnormal use of a moving body other than the vehicle, such as a ship or an aircraft, and the vehicle. Of course, the present invention may be applied to prevent theft of other mobile objects.
[0038]
The embodiments of the present invention have been described using the embodiments. However, the present invention is not limited to these embodiments, and can be implemented in various forms without departing from the gist of the present invention. Of course you get.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing an outline of a configuration of a vehicle antitheft device 30 according to an embodiment of the present invention.
FIG. 2 is a flowchart illustrating processing in an immobilizer control module 50.
[Explanation of symbols]
22 wireless key, 24 signal generation IC, 26 battery, 28 transponder chip, 30 vehicle anti-theft device, 40 wireless control module, 42 wireless antenna, 44 wireless ID storage area, 50 immobilizer control module, 52 electromagnetic field generation circuit, 54 Immobilizer antenna, 56 Immobilizer storage area, 58 indicator, 60 Door lock control module, 70 Engine control module.

Claims (10)

Door lock unlocking means for locking and unlocking the door of the moving body when a first predetermined signal is received or when a mechanical predetermined operation is performed, and the movement when a second predetermined signal is received An apparatus for determining abnormal use of a mobile object having operation permission means for permitting the operation of the body,
Unlocking method determination means for determining whether unlocking of the door is due to reception of the first predetermined signal or mechanical predetermined operation;
An abnormal use determination apparatus for a moving body, comprising: an abnormal use determination unit that determines abnormal use of the moving body based on the determined unlocking method and the second predetermined signal. When the unlocking method is determined to be due to the predetermined mechanical operation for a predetermined number of times and the operation of the moving body is permitted by the second signal, the abnormal use determining means The abnormal use determination apparatus for a moving body according to claim 1, which is means for determining the abnormal use of the mobile object. An apparatus for determining abnormal use of a mobile object according to claim 1,
Signal storage means for storing a plurality of signals as the first predetermined signal and a plurality of signals as the second signal paired with the plurality of signals in association with each other;
The abnormal use determining means is configured to use the first used when unlocking the door of the moving body when the unlocking technique determining means determines that the unlocking technique is based on reception of the first predetermined signal. Based on whether or not the predetermined signal and the second predetermined signal used when obtaining permission for operation of the mobile body constitute a pair of signals stored in the signal storage means An apparatus for determining abnormal use of a moving body, which is means for determining abnormal use of a body. The abnormal use determining means includes the first predetermined signal used when unlocking the door of the moving body and the second predetermined signal used when obtaining permission for operation of the moving body. 4. The abnormal use determination apparatus for a moving body according to claim 3, which is means for determining abnormal use of the moving body when a pair of signals stored by the signal storage means is not configured for a predetermined number of times. The predetermined number of times is set as the number of times of unlocking the door by the predetermined mechanical operation expected until the failure is recovered with respect to the failure of the door unlocking due to the reception of the first predetermined signal. The apparatus for determining abnormal use of a moving body according to claim 2 or 4, wherein the number of times of use is a number of times. 6. The abnormal use determination apparatus for a moving body according to claim 1, further comprising determination result output means for outputting the determination result when the abnormal use determination means determines that the mobile body is abnormally used. An apparatus for determining abnormal use of a moving body according to any one of claims 1 to 6,
The moving body is an automobile,
The door lock unlocking means is a means corresponding to a key having a transmitter capable of transmitting the first predetermined signal and capable of performing the predetermined mechanical operation,
The operation permission means includes an electromagnetic field generating means for generating a predetermined electromagnetic field, and is a means for responding to a signal from a transponder chip that outputs the second predetermined signal in response to the generated electromagnetic field. Body abnormal use determination device. An anti-theft device for preventing theft of a moving object,
An apparatus for determining abnormal use of a moving body according to any one of claims 1 to 7,
An anti-theft device for a moving body, comprising: an abnormal use control means for prohibiting a predetermined operation of the moving body when the abnormal use determining means provided in the abnormal use determining device determines that the moving body is abnormally used. The anti-theft device for a mobile object according to claim 8, wherein the abnormal use control means is a means for prohibiting permission of operation of the mobile object. 10. The anti-theft device for a mobile object according to claim 8, wherein the abnormal use determination device is the abnormal use determination device according to claim 3 or 4, and forms the pair stored in the signal storage means. A storage signal addition / change means for adding or changing a signal is provided,
The abnormal use anti-theft device is an anti-theft device for a moving body which is means for prohibiting addition or change of the paired signals by the stored signal addition / change means.

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