JP2006199192A - Antitheft device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an antitheft device for a vehicle capable of maintaining security property of the vehicle without relying on the communication with the outside through a communication antenna. <P>SOLUTION: The antitheft device for the vehicle is equipped with a habit detection part 30, a function deterioration part 60, a habit recognition part 90, and a security ECU100. The habit information of an authorized user of the vehicle 3 is written in the habit recognition part 90. The security ECU100 detects the habit of a driver based on various signals inputted from the habit detection part 30, and creates the habit information of the driver based on the detection result. The security ECU100 compares the habit information of the driver to be created with the habit information of the authorized user to be written in the habit recognition part 90, and checks whether or not the driver who is driving the vehicle 3 is the authorized driver of the vehicle 3 according to the comparison result. When the driver is not the authorized user, the security ECU100 deteriorates the function of the vehicle 3 by the function deterioration part 60. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a vehicle antitheft device.

2. Description of the Related Art Conventionally, a vehicle antitheft device including a communication antenna for communicating with a security organization is known. For example, the vehicle antitheft device disclosed in Patent Document 1 is a wireless communication that includes a GPS unit that includes a GPS antenna for receiving radio waves from a GPS satellite, and a communication antenna that communicates with a security organization. And a control unit that controls the GPS unit and the wireless communication device and transmits vehicle position information to the security organization. When a vehicle equipped with this vehicle anti-theft device is stolen, when a user (vehicle owner) who notices the vehicle theft contacts the security organization, the command signal that the security organization requests transmission of vehicle location information. Send. When receiving the command signal at the communication antenna, the vehicle antitheft device transmits the vehicle position information output from the GPS unit to the security organization via the communication antenna. The security organization grasps the current position of the vehicle based on the vehicle position information transmitted from the vehicle antitheft device.
JP 2003-226228 A

  However, in the vehicle antitheft device disclosed in Patent Document 1, for example, if a communication antenna is broken, communication with a security organization cannot be performed via the communication antenna. Also, if the vehicle is moved to a place where it is difficult to communicate by radio waves (mountainous areas, etc.), for some reason, it becomes impossible to communicate with the outside via the communication antenna. Can no longer communicate with. In such a case, the current position of the vehicle cannot be grasped by the security organization, and it may be difficult to maintain the security of the vehicle when the vehicle is stolen.

  Further, the vehicle antitheft device of Patent Document 1 has a problem that no measures can be taken against the vehicle theft until the user notices the vehicle theft and notifies the security organization.

  The present invention has been made in view of such circumstances, and an object thereof is to provide a vehicle antitheft device capable of maintaining the security of a vehicle without relying on communication with the outside via a communication antenna. There is to do.

  In order to solve the above-mentioned problem, the invention according to claim 1 is characterized in that a saddle detection means for generating a saddle information by detecting a saddle of a driver of the vehicle by a sensor arranged in the vehicle, and a normal user of the vehicle Comparing storage means in which information is stored in advance, the driver's trap information generated by the trap detection means and the regular user's trap information stored in the storage means, and according to the comparison result It comprises a judging means for judging whether or not the vehicle has been stolen, and a function reducing means for reducing the function of the vehicle when the judging means judges that the vehicle has been stolen. A vehicle antitheft device was provided.

  According to a second aspect of the present invention, in the vehicle antitheft device according to the first aspect, the wrinkle detection means generates a plurality of wrinkle information of the driver, and the storage means stores the wrinkle information of the authorized user. Are stored, and the determination unit compares the driver's trap information generated by the trap detection unit with the regular user's trap information stored in the storage unit, and at least two of them match. If not, it is determined that the vehicle has been stolen.

  According to a third aspect of the present invention, there is provided a saddle detecting means for generating saddle information obtained by detecting a saddle of a driver of the vehicle by a sensor disposed in the vehicle, and a storage means for storing the driver's saddle information in advance. The driver driving the vehicle according to the comparison result by comparing the driver's trap information generated by the trap detection means with the regular user's trap information stored in the storage means Whether the vehicle is stolen when the driver who is driving the vehicle is not a regular user of the vehicle, and the determination unit determines whether the vehicle is stolen. When it is determined that the vehicle has been stolen, the vehicle anti-theft device is provided with function reducing means for reducing the function of the vehicle.

  According to a fourth aspect of the present invention, in the vehicle antitheft device according to the third aspect, the wrinkle detection means generates a plurality of wrinkle information of the driver, and the storage means stores the wrinkle information of the authorized user. Are stored, and the determination unit compares the driver's trap information generated by the trap detection unit with the regular user's trap information stored in the storage unit, and at least two of them match. If not, it is checked whether or not the driver driving the vehicle is an authorized user of the vehicle.

  According to a fifth aspect of the present invention, in the vehicle antitheft device according to any one of the first to fourth aspects, the storage means corresponds to identification information respectively set for the plurality of authorized users. Provided with a plurality of storage units each storing the regular user's habit information corresponding to the identification information, the determination means acquires the identification information from the driver, and corresponds to the acquired identification information The storage unit is selected, and the regular user's bag information stored in the selected storage unit is compared with the driver's bag information generated by the bag detection means.

(Function)
According to the first aspect of the present invention, the determination unit compares the driver's trap information generated by the trap detection unit with the regular user's trap information stored in advance in the storage unit, and determines the comparison result. In response, it is determined whether or not the vehicle has been stolen. Therefore, even if the authorized user does not notice that the vehicle has been stolen, the vehicle theft prevention device detects the vehicle theft. And when it is judged by the judgment means that the vehicle has been stolen, the function of the vehicle is lowered by the function lowering means. Thereby, the suspicious person's willingness to run away with the vehicle is reduced. Therefore, the security of the vehicle can be maintained without relying on communication with the outside via the communication antenna. In the present invention, “癖” refers to a feature of an operation performed when the driver gets into the vehicle and drives the vehicle. The vehicle function means a comfort function for comfortably driving the vehicle and a function related to running of the vehicle.

  According to the invention described in claim 2, the determination is made by comparing the plurality of driver's bag information generated by the bag detecting unit with the plurality of driver's bag information stored in the storage unit, respectively. The means determines whether the vehicle has been stolen. Therefore, the reliability of determination as to whether the vehicle performed by the determination unit has been stolen is improved. In addition, the determination unit compares the plurality of driver's bag information generated by the bag detection unit with the plurality of regular user's bag information stored in the storage unit, and there is a plurality of mismatched bag information. And determine that the vehicle has been stolen. Therefore, the possibility that the driver who is a regular user is determined to be a suspicious person who has stolen the vehicle is reduced.

  According to the third aspect of the present invention, the determination unit compares the driver's trap information generated by the trap detection unit with the regular user's trap information stored in the storage unit in advance, and the comparison result is obtained. In response, it is checked whether or not the driver is a regular user, and if the driver is not a regular user, it is determined that the vehicle has been stolen. Therefore, even if the authorized user does not notice that the vehicle has been stolen, the vehicle theft prevention device detects the vehicle theft. And when it is judged by the judgment means that the vehicle has been stolen, the function of the vehicle is lowered by the function lowering means. Thereby, the suspicious person's willingness to run away with the vehicle is reduced. Therefore, the security of the vehicle can be maintained without relying on communication with the outside via the communication antenna.

  In addition, the determination unit collates whether or not the driver is a regular user, and determines that the vehicle has been stolen when the driver is not a regular user. Therefore, for example, when the authorized user operates with an operation different from normal, that is, with an operation different from the bag information stored in the storage unit, the function of the vehicle is prevented from being reduced by the function reduction unit.

  According to the invention described in claim 4, by comparing each of the plurality of driver's bag information generated by the bag detecting unit and the plurality of driver's bag information stored in the storage unit, The driver checks whether the driver is an authorized user according to the comparison result. Therefore, when the possibility that the vehicle has been stolen is higher, it is verified whether or not the passenger is an authorized user. In addition, the determination unit compares the plurality of driver's bag information generated by the bag detection unit with the plurality of regular user's bag information stored in the storage unit, and there is a plurality of mismatched bag information. Check whether the driver is a regular user. Therefore, when the driver is a regular user, the possibility of collating whether or not the driver is a regular user is reduced.

  According to the fifth aspect of the present invention, the storage unit stores the trap information of the regular user corresponding to the identification information in the storage unit corresponding to the identification information set for each of the plurality of regular users. Then, the determination means compares the regular user's trap information stored in the storage unit corresponding to the identification information acquired from the driver with the driver's trap information generated by the trap detection means. Therefore, when there are a plurality of regular users for one vehicle, the regular user's trap information to be compared is appropriately selected with respect to the driver's trap information generated by the trap detection means. Here, the “identification information” means not information that identifies an individual but information that makes it possible to identify each regular user among a plurality of regular users.

  ADVANTAGE OF THE INVENTION According to this invention, the vehicle antitheft device by which the security of a vehicle is maintained can be provided, without relying on the communication with the exterior via a communication antenna.

Hereinafter, an embodiment in which the present invention is embodied in a vehicle antitheft system will be described with reference to FIG.
As shown in FIG. 1, the vehicle antitheft system 1 includes a portable device 2 and a vehicle antitheft device 4 mounted on the vehicle 3.

  When the portable device 2 is carried by the driver and receives a request signal transmitted from the vehicle antitheft device 4, the portable device 2 transmits an ID signal including an ID code (identification information) preset for each portable device 2. When there are a plurality of authorized users (the owner of the vehicle and the driver recognized by the owner) for the vehicle 3, the portable device 2 in which a different ID code is set for each authorized user Carried by the user. That is, the number of portable devices 2 is the same as the number of authorized users. In the following description, it is assumed that there are a plurality of authorized users for the vehicle 3, but there may be only one authorized user.

  The vehicle antitheft device 4 includes a collation unit 10, a car navigation device 20, a hail detection unit 30, a raindrop detection unit 50, a function drop unit 60, a clock 70, a communication unit 80, a hail recognition unit 90, and a security ECU (Electronic Control Unit). ) 100. The vehicle antitheft device 4 is supplied with electric power from an in-vehicle battery (not shown).

  The verification unit 10 includes a transmission / reception circuit 11 and a verification control unit 12. The transmission / reception circuit 11 modulates the request signal input from the verification control unit 12 to a predetermined frequency and transmits the modulated signal via the transmission / reception antenna 13. Further, when receiving the ID signal transmitted from the portable device 2 as a response to the request signal, the transmission / reception circuit 11 demodulates the ID signal into a pulse signal and outputs the pulse signal to the collation control unit 12.

  The collation control unit 12 is a CPU unit including a CPU (Central Processing Unit), a ROM (Read-Only Memory), a RAM (Random Access Memory), and the like (not shown). In the ROM, an ID code set in advance for each vehicle is recorded. A plurality of ID codes are set corresponding to the plurality of portable devices 2 for the vehicle 3.

  The verification control unit 12 intermittently outputs a request signal for requesting a reply of the ID signal to the transmission / reception circuit 11. When the ID code signal is input, the verification control unit 12 compares the ID code in the ID signal with the ID code recorded in advance in the ROM (ID verification). If the ID verification in the ID signal coincides with any of the ID codes recorded in advance in the ROM, the verification control unit 12 operates the door lock actuator (not shown) to Lock and unlock doors. Moreover, the collation control part 12 will output the identification signal containing ID code of the portable device 2 in which ID collation was established to security ECU100, if ID collation was materialized.

  The car navigation device 20 is a device that guides the driver to a destination so as not to make a mistake on the road by measuring the position of the vehicle by GPS (Global Positioning System). The GPS is a system that receives a plurality of (for example, three) radio waves transmitted from the GPS satellite 21 and measures its own position based on the principle of triangulation.

  The car navigation device 20 is a unitized device, a control unit 22 that controls the main control of the device, a GPS unit 23 that measures the position of itself (that is, the vehicle 3) using GPS, and power to the device. A switch-type operation unit 24 is provided which is operated when inputting data or inputting data. In addition, the car navigation device 20 includes a display 25 on which various screens are displayed during use, and a speaker 26 that outputs sound. The operation unit 24 is also operated by the driver when inputting a password for confirming that the driver is an authorized user.

  The GPS unit 23 includes a GPS antenna 27, receives radio waves from a plurality of GPS satellites 21 via the GPS antenna 27, and based on the received radio waves, the current position of the GPS unit 23 (that is, the current position of the vehicle 3). Measure. Then, the GPS unit 23 outputs the measured vehicle position information to the control unit 22. The control unit 22 displays the position of the vehicle 3 on the digital map of the display 25 based on the vehicle position information and guides the driver to the destination so as not to get lost. Control unit 22 outputs vehicle position information to security ECU 100.

  The heel detector 30 is provided to detect the heel of the driver who is driving the vehicle 3. Here, “癖” refers to a feature of an operation performed when the driver gets into the vehicle 3 and drives the vehicle 3. The heel detection unit 30 includes a door opening / closing detection unit 31, a seat belt attachment / detachment detection unit 32, an engine start detection unit 33, a steering wheel contact position detection unit 34, a steering wheel operation detection unit 35, a shift lever contact detection unit 36, and a shift position detection. A unit 37, an accelerator operation detection unit 38, a brake operation detection unit 39, and a vehicle speed detection unit 40 are included.

  The door open / close detection unit 31 is a switch type sensor electrically connected to the security ECU 100 and detects the open / closed state of the door of the driver's seat of the vehicle 3. The door opening / closing detection unit 31 outputs an open signal to the security ECU 100 when the driver's seat door is open, and outputs a close signal to the security ECU 100 when the driver's seat door is closed. .

  The seat belt attachment / detachment detection unit 32 is a switch type sensor electrically connected to the security ECU 100, and detects the attachment / detachment state of the driver's seat belt. The seat belt device includes a buckle fixed to the left side of the driver's seat and a lap belt to which a tongue plate to be inserted into the buckle is inserted. The seat belt attachment / detachment detection unit 32 is disposed in the buckle. When the tongue plate is inserted into the buckle and locked by the driver, the seat belt attachment / detachment detection unit 32 outputs an attachment signal to the security ECU 100. When the tongue plate is released from the buckle by the driver, the seat belt attachment / detachment detection unit 32 outputs a release signal to the security ECU 100.

  The engine start detection unit 33 is configured by an ignition switch of the vehicle 3 and detects that the engine has been started. The engine start detection unit 33 is electrically connected to the security ECU 100 and outputs a start signal to the security ECU 100 when the ignition switch is operated so as to start the engine by the driver.

  The steering wheel contact position detection unit 34 includes a plurality of touch sensors that are electrically connected to the security ECU 100, and detects a position that the driver grips when operating the steering wheel. The touch sensors are arranged at equiangular intervals in the circumferential direction on the outer peripheral edge of the steering wheel. In addition, in order to detect reliably the position which a driver | operator's hand holds in a steering wheel, it is desirable for each touch sensor that the space | interval between adjacent touch sensors is below the width | variety of a driver | operator's palm. And a contact detection signal is output from the touch sensor which the driver | operator's hand contacted when a driver | operator grips a steering wheel. The security ECU 100 can identify from which touch sensor constituting the steering wheel contact position detector 34 the contact detection signal is input.

  The steering wheel operation detection unit 35 includes a steering angle sensor that is electrically connected to the security ECU 100, and detects how the steering wheel is operated by the driver. Specifically, the steering wheel operation detection unit 35 includes a slot disk that is fixed to the steering shaft so as to be integrally rotatable, and two sets of photo interrupters that are fixed at positions facing the slot disk in the axial direction. . A plurality of holes are formed in the slot disk at equal angular intervals in the circumferential direction. When the slot disk rotates together with the steering shaft, the photo interrupter generates an ON / OFF pulse signal at every predetermined steering angle in accordance with the transmission / cutoff of light by the slot disk. This pulse signal is output to the security ECU 100 as a steering wheel operation signal. As described above, the steering wheel operation detection unit 35 outputs a steering wheel operation signal corresponding to the rotation amount, rotation speed, and rotation direction of the steering wheel to the security ECU 100.

  The shift lever contact detection unit 36 includes a touch sensor electrically connected to the security ECU 100, and detects that the driver has gripped the shift lever. The shift lever contact detection unit 36 is disposed at a position where the driver's hand comes into contact with the shift lever when the driver operates the shift lever. The shift lever contact detection unit 36 outputs a contact detection signal to the security ECU 100 when the driver contacts the shift lever (holds the shift lever).

  The shift position detection unit 37 is configured by a switch having a multi-stage contact, and detects the position of the shift lever. The shift position detection unit 37 outputs a shift position signal corresponding to the detected position of the shift lever to the security ECU 100. That is, the shift position detection unit 37 has a shift position signal indicating that the shift lever is positioned at the parking (P) position, a shift position signal indicating that the shift lever is positioned at the reverse (R) position, and neutral (N). A shift signal indicating that the vehicle is positioned at the position and a shift signal indicating that the vehicle is positioned at the traveling (D) position are output.

  The accelerator operation detection unit 38 is a switch unit including a rotary encoder, and detects how the driver operates the accelerator pedal. Specifically, the rotary encoder of the accelerator operation detection unit 38 is attached to a position where the depression amount of the accelerator pedal can be detected, for example, a rotation fulcrum of the accelerator pedal. Then, the accelerator operation detection unit 38 indirectly detects the depression amount of the accelerator pedal from the rotation angle of the accelerator pedal and detects the depression speed of the accelerator pedal. The accelerator operation detection unit 38 outputs an accelerator operation signal corresponding to the depression amount and depression speed of the accelerator pedal to the security ECU 100.

  Similar to the accelerator operation detection unit 38, the brake operation detection unit 39 is a switch unit including a rotary encoder, and detects how the driver operates the brake pedal. Specifically, the rotary encoder of the brake operation detection unit 39 is attached to a position where the depression amount of the brake pedal can be detected, for example, a rotation fulcrum of the brake pedal. Then, the brake operation detection unit 39 indirectly detects the depression amount of the brake pedal from the rotation accuracy of the brake pedal and also detects the depression speed of the brake pedal. The brake operation detection unit 39 outputs a brake operation signal corresponding to the depression amount and depression speed of the brake pedal to the security ECU 100.

  The vehicle speed detection unit 40 is configured by a sensor that detects the speed of the wheel, and detects the traveling speed of the vehicle 3. Specifically, the vehicle speed detection unit 40 includes a magnetic rotor that rotates together with the wheels, and a Hall IC that is disposed to face the magnetic rotor. And the magnetic flux change which arises by rotation of a magnetic rotor is taken out as a vehicle speed pulse by Hall IC. This vehicle speed pulse is output to the security ECU 100 as a vehicle speed signal.

  The raindrop detection unit 50 is a sensor for detecting the presence or absence of rainfall. The raindrop detection unit 50 is provided at a predetermined location outside the vehicle 3 and outputs a raindrop detection signal indicating that to the security ECU 100 when rain is detected.

The function lowering unit 60 includes a window glass opening / closing regulating unit 61 and a shift change regulating unit 62.
The vehicle 3 of the present embodiment includes a power window device that electrically lifts and lowers a window glass provided on the door of the vehicle 3. The window glass is moved up and down (opened and closed) by a window regulator. When a restriction signal for prohibiting the raising / lowering of the window glass is input from the security ECU 100, the window glass opening / closing restriction unit 61 inhibits the operation of the power window device and raises (closes) and lowers (opens) the window glass. ) Is not performed.

  The vehicle 3 includes a shift-by-wire automatic transmission. When the restriction signal indicating prohibition of upshifting is input from the security ECU 100, the shift change restricting unit 62 shifts up more than the state of the transmission when the restriction signal indicating prohibition of upshifting is input. Thus, switching of the gear train of the transmission is prohibited. Further, after the restriction signal indicating that the upshift is prohibited is input, the shift change restriction unit 62 restricts the switching of the gear train in the transmission so that once the downshift is performed, the upshift cannot be performed thereafter. To do.

The clock 70 is electrically connected to the security ECU 100 and outputs a time signal corresponding to the time to the security ECU 100.
The communication unit 80 performs radio wave communication with a security organization (private security company, police, hospital, etc.) 81 and includes a communication antenna 82. The communication unit 80 sends a notification signal input from the security ECU 100 via the communication antenna 82 when an emergency situation (theft of the vehicle 3, an accident, etc.) requiring notification to the security organization 81 occurs in the vehicle 3. It transmits to the security organization 81.

  The heel recognition unit 90 is a database. Specifically, the eyelid recognition unit 90 includes an eyelid recognition engine 91 corresponding to each portable device 2. That is, the eyelid recognition unit 90 includes an eyelid recognition engine 91 corresponding to each ID code of the plurality of portable devices 2 corresponding to the vehicle 3. In the wrinkle recognition engine 91, the wrinkle information of the driver who has the portable device 2 corresponding to the wrinkle recognition engine 91 is written as the wrinkle information of the authorized user by the security ECU 100.

  The security ECU 100 is a CPU unit including a CPU, ROM, RAM, and the like (not shown), and includes a memory 101 and a timer circuit 102. In the memory 101, a password for authenticating that the driver is an authorized user is registered. This password is registered by a legitimate user possessing the portable device 2 by operating the operation unit 24, and is stored in the memory 101 corresponding to the ID code of each portable device 2.

  The security ECU 100 detects the driver's heel based on various signals input from the heel detector 30, and creates the driver's heel information based on the detection result. “Hail information” refers to data that the security ECU 100 creates (generates) by detecting a driver's wrinkle based on various signals input from the hail detection unit 30. Here, the driver's bag information created by the security ECU 100 will be described by dividing it into items (listed for each item). In the present embodiment, the detection of the driver's bag is started when the driver of the vehicle 3 opens the door of the driver's seat of the vehicle 3, and the driver gets off the vehicle 3 and gets into the driver's seat. When the door is locked (locked), it is terminated. That is, the security ECU 100 starts detection of a driver's bag from the time when an open signal is input from the door opening / closing detection unit 31, and detects a lock / unlock state of the door of the vehicle 3 (not shown). When the lock signal indicating that the door of the driver's seat is locked is input, the detection of the driver's bag is finished.

  The security ECU 100 receives an opening signal input from the door opening / closing detection unit 31, an attachment signal input from the seat belt attachment / detachment detection unit 32, and a start signal input from the engine start detection unit 33 in any order. Is detected. From this detection result, the security ECU 100 creates, as driver's bag information, the order in which the driver performs the operation of closing the door of the vehicle 3, the operation of wearing the seat belt, and the operation of starting the engine.

  The security ECU 100 detects which position of the steering wheel the driver is holding based on the contact detection signal input from the steering wheel contact position detection unit 34. From this detection result, the security ECU 100 creates, as the driver's bag information, which position of the steering wheel is held when the driver drives the vehicle 3.

  The security ECU 100 detects that the driver is holding the shift lever when a contact detection signal is input from the shift lever contact detection unit 36. Further, when the contact detection signal is input, the security ECU 100 drives the timer circuit 102 to measure the time during which the contact detection signal is input. Note that whether or not the driver is holding the shift lever while traveling is detected while a shift signal indicating that the shift lever is in the traveling (D) position is input from the shift position detection unit 37. Done inside. From this detection result, the security ECU 100 creates whether or not the driver is holding the shift lever while traveling as the driver's bag information. In addition, when the driver is holding the shift lever while traveling, the security ECU 100 creates the time during which the driver is holding the shift lever as the driver's bag information.

  The security ECU 100 detects the amount of depression of the accelerator pedal and the depression speed of the accelerator pedal (speed of depression of the accelerator pedal) based on the accelerator operation signal input from the accelerator operation detection unit 38. Thereby, the security ECU 100 indicates that, for example, the driver is a person who depresses the accelerator pedal quickly and deeply at the time of starting, or a person who depresses the accelerator pedal so as to gradually depress at first and increase the depressing speed gradually. Detect. From this detection result, the security ECU 100 creates how to depress the accelerator pedal at the start as driver's habit information.

  The security ECU 100 detects the depression amount of the brake pedal and the depression speed of the brake pedal (the depression speed of the brake pedal) based on the brake operation signal input from the brake operation detection unit 39. Further, the security ECU 100 detects the speed of the vehicle 3 based on the vehicle speed signal input from the vehicle speed detection unit 40, and detects the detected speed in association with the driver's brake depression method. Thereby, for example, the security ECU 100 indicates that the driver is a person who slowly depresses the brake pedal at the beginning of depressing and quickly depresses the brake pedal just before the vehicle 3 stops, or the depressing amount is gradually increased when the depressing starts. It is detected that the person is depressing the brake pedal. Also, the security ECU 100 detects how the brake pedal is depressed according to the vehicle speed, such as how the brake pedal is depressed when the vehicle speed is 50 [km / h], for example. Furthermore, the security ECU 100 detects that the driver stops the depression of the brake pedal when the vehicle speed reaches a predetermined level. From this detection result, the security ECU 100 creates how the driver depresses the brake pedal as the driver's bag information.

  When the security ECU 100 detects that the vehicle speed is 0 [km / h] based on the vehicle speed signal input from the vehicle speed detector 40, the shift lever is positioned at the N position from the shift position detector 37. When the shift signal is input, it is detected that the driver has switched the shift lever to the N position when the vehicle 3 is stopped. From this detection result, the security ECU 100 creates whether or not the driver switches the shift lever to the neutral (N) position when the vehicle 3 is stopped as driver's habit information.

  The security ECU 100 detects the rotation amount and the rotation speed of the steering wheel based on the steering wheel operation signal input from the steering wheel operation detection unit 35 when the vehicle 3 turns right or left at a predetermined intersection. The predetermined intersection is an intersection where a regular user frequently turns right or left. When the right user makes a right turn or left more than a predetermined number of times (for example, 10 times), the security ECU 100 writes the position information of the intersection in the bag recognition engine 91. It is. From this detection result, when the vehicle 3 makes a right turn or a left turn at a predetermined intersection, the security ECU 100 creates how the driver operates the steering wheel as driver's habit information.

  When the vehicle 3 is used, for example, for commuting or attending school, since the time at which the vehicle 3 is driven is almost determined, the security ECU 100 determines that the vehicle 3 is based on the time signal input from the clock 70. Detect the time of driving. From this detection result, the security ECU 100 creates the time when the driver drives the vehicle 3 as the driver's bag information.

  The security ECU 100 records the driver's bag information in the bag recognition unit 90 for a predetermined period (for example, 30 days) after the vehicle antitheft device 4 starts to be used. That is, the security ECU 100 detects the driver's heel based on various signals input from the heel detection unit 30 to create the driver's heel information (for a plurality of items described above). It is written in the wrinkle recognition unit 90 as wrinkle information of the authorized user. At this time, the security ECU 100 recognizes which portable device 2 the portable device 2 possessed by the driver is based on the identification signal input from the collation control unit 12, and identifies the identified portable device 2. The driver's wrinkle information created in the corresponding wrinkle recognition engine 91 is written as the wrinkle information of the authorized user. When the predetermined period elapses, the most detected state for each item of the driver's bag information is left in the bag recognition engine 91 as the bag information of the authorized user.

  Further, the security ECU 100 reads out the leg information of the authorized user from the heel recognition unit 90, compares the read leg information of the authorized user with the created driver's habit information, and the vehicle antitheft device 4 according to the comparison result. To control.

Next, the operation of the vehicle antitheft device 4 configured as described above will be described.
When the vehicle 3 is parked (the door is locked) and the driver carrying the portable device 2 approaches the vehicle 3 to a position where the request signal transmitted from the vehicle antitheft device 4 can be received. The ID signal is transmitted from the portable device 2 carried by the driver to the vehicle antitheft device 4. When the verification unit 10 receives the ID signal via the transmission / reception antenna 13, the verification unit 10 performs ID verification. When the ID collation is established, the collation unit 10 operates the door lock actuator to unlock the door of the vehicle 3 and outputs an identification signal including the ID code of the portable device 2 for which the ID collation is established to the security ECU 100.

  When the identification signal is input, the security ECU 100 selects the wrinkle recognition engine 91 corresponding to the portable device 2 for which ID verification is established based on the identification signal. That is, the eyelid recognition engine 91 provided corresponding to the ID code of the portable device 2 for which ID verification is established is selected. And security ECU100 will start detection of a driver's eyelid, if an open signal is inputted from door opening and closing detection part 31 when a driver's door of a driver's seat is opened by a driver.

  The security ECU 100 detects the driver's wrinkle based on various signals input from the wrinkle detection unit 30, and creates the above-described driver's wrinkle information (items in the item) based on the detection result. Then, the security ECU 100 compares the created driver's bag information with the selected user's bag information written in the selected bag recognition engine 91 for each item described above. When the raindrop detection signal is input from the raindrop detection unit 50, the security ECU 100 creates the driver's bag information “the driver closes the door of the vehicle 3 and attaches the seat belt. The item “order of performing the operation and the operation of starting the engine” is invalid. That is, regarding this item, the security ECU 100 does not compare the selected user's wrinkle information written in the selected wrinkle recognition engine 91.

  The security ECU 100 determines that the driver driving the vehicle 3 is the vehicle 3 when the generated driver's trap information matches the read trap information of the authorized user written in the trap recognition engine 91. It is determined that the user is an authorized user and is an authorized owner of the portable device 2. However, for the soot information created by detecting how the steering wheel, the accelerator pedal, and the brake pedal are operated, "match" means that the created soot information of the driver and the legitimate recognition engine 91 are written. It does not refer only to the case where the user's bag information completely matches. “Match” in this case includes a case where the generated driver's bag information is similar to the license information of the authorized user written in the bag recognition engine 91. Further, the interpretation of “match” is the same for the bag information created by detecting the time.

  On the other hand, when the generated driver's bag information does not match the read information of the authorized user written in the bag recognition engine 91, the security ECU 100 counts the number of mismatched bag information. Then, when the number of mismatched heel information reaches a predetermined number (set to be equal to or less than the number of items in the driver's heel information to be created, for example, set to 4 in the present embodiment), the security ECU 100 It is determined that the vehicle 3 may have been stolen. Then, the security ECU 100 displays an image requesting the password input on the display 25 and outputs a voice requesting the password input to the speaker 26 to request the driver to input the password. To do.

  When the driver inputs a password by operating the operation unit 24, the security ECU 100 compares the password input by operating the operation unit 24 with a password registered in advance in the memory 101 (password verification). ). If the password entered by operating the operation unit 24 matches the password registered in advance in the memory 101 corresponding to the portable device 2 carried by the driver, the password verification is established. The ECU 100 determines that the driver is an authorized user of the vehicle 3 and an authorized owner of the portable device 2. In this case, although the driver is a regular user, the bag information written in the bag recognition engine 91 is different from the generated bag information, so that the regular user is driving with a kite different from the normal driving state. Will be. Accordingly, the security ECU 100 causes the display 25 to display an image that encourages safe driving and causes the speaker 26 to output a sound that encourages safe driving.

  On the other hand, when the password verification is not established, the security ECU 100 determines that the driver is not a regular user, that is, a suspicious person and the vehicle 3 has been stolen. The security ECU 100 determines that the driver is a suspicious person and the vehicle 3 has been stolen even when the password is not input by the operation unit 24 after a predetermined time t1 has elapsed since the password input was requested. To do. Then, the security ECU 100 outputs a notification signal indicating that the vehicle 3 has been stolen to the communication unit 80. The communication unit 80 transmits a notification signal to the security organization 81 via the communication antenna 82. Furthermore, the security ECU 100 gradually reduces the function of the vehicle 3. In the present embodiment, the security ECU 100 first outputs a restriction signal for prohibiting the raising / lowering of the window glass to the window glass opening / closing restriction part 61. Thereby, the window glass opening / closing restricting part 61 prohibits both rising and lowering of the window glass. Therefore, for example, even if a suspicious person who has stolen the vehicle 3 attempts to adjust the temperature inside the vehicle by lowering (opening) the window glass, the window glass does not move. Next, the security ECU 100 outputs a restriction signal indicating that the upshifting is prohibited to the shift change restriction unit 62. Thereby, the shift change regulation part 62 prohibits the speed increase of the vehicle 3. Therefore, when the vehicle 3 is stopped, the suspicious person cannot start the vehicle 3. Further, when the vehicle 3 is traveling, the suspicious person cannot increase the speed of the vehicle 3 and once the vehicle 3 is decreased, the suspicious person cannot increase the speed further.

  The security ECU 100 determines that the driver driving the vehicle 3 is an authorized user of the vehicle 3 and the authorized mobile device 2 is authorized when the number of inconsistent bag information does not reach a predetermined number (for example, 4). Judged to be the owner of

  The above-described processing performed by the security ECU 100 based on the heel information of the authorized user written in the heel recognition unit 90 is terminated when a lock signal is input to the security ECU 100 from the door lock position switch. This process is also performed during the period in which the soot information is recorded in the soot recognition unit 90.

As described above, according to the present embodiment, the following actions and effects are obtained.
(1) The security ECU 100 detects the driver's heel based on various signals input from the heel detection unit 30. Then, the security ECU 100 compares the driver's trap information created based on the detection result with the trap user's trap information stored in the trap recognition unit 90, and the vehicle 3 is stolen according to the comparison result. When it is determined that there is a possibility, password verification is performed to check whether or not the driver is an authorized user. And when a driver is not a regular user, security ECU100 judges that vehicle 3 was stolen. Accordingly, the vehicle theft prevention device 4 detects the vehicle theft even if the authorized user is unaware that the vehicle 3 has been stolen. Accordingly, the theft of the vehicle 3 can be detected even when the vehicle 3 is stolen by a suspicious person who has stolen the portable device 2. Further, when the security ECU 100 determines that the vehicle 3 has been stolen, the function of the vehicle 3 is lowered by the function lowering unit 60. Thereby, the suspicious person's willingness to run away with the stolen vehicle 3 is reduced. Therefore, even when it is not possible to communicate with the security organization 81 via the communication antenna 82, the security of the vehicle 3 can be maintained without relying on communication with the outside via the communication antenna 82. .

  (2) The security ECU 100 determines that the vehicle 3 has been stolen when it is determined by password verification that the driver is not an authorized user. Therefore, for example, when the authorized user operates with an operation different from normal, that is, an operation different from the bag information stored in the bag recognition unit 90, the function of the vehicle 3 is prevented from being stopped by the function lowering unit 60. be able to.

  (3) The security ECU 100 compares, for each item, the plurality of driver's bag information created based on the driver's bag detection result and the multiple items of the regular user's bag information written in the bag recognition unit 90. Thus, it is determined whether or not the vehicle 3 may be stolen according to the comparison result. Therefore, since it is determined whether there is a possibility that the vehicle has been stolen based on the comparison result of the plurality of bag information, the reliability of the determination is improved. Therefore, when the possibility that the vehicle 3 has been stolen is higher, the password verification is performed by the security ECU 100, and it is possible to suppress an unnecessary user from requesting input of a password.

  (4) The wrinkle recognition unit 90 includes a wrinkle recognition engine 91 corresponding to the ID code of the portable device 2 carried by each of a plurality of authorized users. In addition, in each wrinkle recognition engine 91, wrinkle information of an authorized owner of the portable device 2 in which an ID code corresponding to each wrinkle recognition engine 91 is set is recorded. Therefore, when there are a plurality of authorized users for the vehicle 3, the trap information of each authorized user is recorded without being mixed. Further, when the security ECU 100 acquires the ID code set in the portable device 2 possessed by the driver, the security ECU 100 selects the heel recognition engine 91 corresponding to the ID code, and the regular ECU written in the selected heel recognition engine 91 The user's heel information is compared with the driver's heel information created based on the driver's heel detected using the heel detection unit 30. Therefore, when there are a plurality of regular users for the vehicle 3, the regular user's habit information to be compared with the created driver's habit information is appropriately selected. As a result, it is possible to further improve the reliability of determination as to whether or not the vehicle performed by the security ECU 100 may be stolen.

  (5) When the password verification is established, the security ECU 100 determines that the authorized user is driving with a vehicle that is different from the normal driving state, and causes the display 25 to display an image for encouraging safe driving. At the same time, the speaker 26 is made to output a sound that encourages safe driving. Thereby, the authorized user can be aware of the fact that his / her driving condition is different from normal, and can make safe driving.

  (6) Once the authorized user has registered the password for password verification, the user can simply drive as usual, and the security ECU 100 may record his / her bag information and the vehicle 3 may be stolen. A determination is made whether or not. Therefore, the burden on the authorized user caused by mounting the vehicle antitheft device 4 on the vehicle 3 is small.

  (7) When the raindrop detection signal is input from the raindrop detection unit 50, the security ECU 100 detects it as the driver's trap information. “The driver closes the door of the vehicle 3 and wears a seat belt. The item “the order of performing the operation to start and the operation to start the engine” is invalid. Therefore, the hail information that may fluctuate when it is raining is not compared with the hail information of the authorized user written in the hail recognition engine 91 when it is raining, thereby making the security ECU 100 Can determine whether the vehicle may have been stolen without being affected by the weather.

In addition, you may change embodiment of this invention as follows.
○ An image to encourage safe driving is displayed on the display 25, and a sound to encourage safe driving is output to the speaker 26, and then the saddle information is compared again. When the predetermined number is reached, biometric verification (for example, fingerprint verification) may be performed. In this case, the security ECU 100 gradually lowers the function of the vehicle 3 when biometric verification is not established. If comprised in this way, even if a suspicious person hears a password from the regular user of the vehicle 3 and steals the vehicle 3, the security of the vehicle 3 can be maintained.

  In the above embodiment, in order to correspond the wrinkle recognition engine 91 for each authorized user, the wrinkle recognition engine 91 is provided corresponding to the portable device 2 (ID code) provided corresponding to each authorized user. However, the bag recognition engine 91 may be provided corresponding to the seat position (identification information) of the driver's seat. In this case, by detecting the seat position of the driver's seat, the security ECU 100 selects the heel recognition engine 91 corresponding to the detected seat position, and the heel information of the authorized user written in the selected heel recognition engine 91; The driver's wrinkle created based on the driver's wrinkle detection result is compared. The position of the driver's seat can be detected using a position sensor attached to the drive motor if the front / rear position of the driver's seat and the rotation position of the reclining unit are adjusted by motor drive. Detected. This position sensor is composed of a magnet attached to a shaft that is rotated by a motor, and a Hall IC disposed opposite to the magnet. Then, the position sensor takes out the magnetic flux change caused by the rotation of the shaft as a rotation pulse by the Hall IC, and outputs this rotation pulse to the security ECU 100 as a seat position signal. The security ECU 100 detects the seat position based on the seat position signal.

  In the above embodiment, the security ECU 100 creates eight items of bag information as the driver's bag information, but is not limited thereto. For example, the driver's bag information to be created may be any n items (n is a natural number of 7 or less) among the 8 items of the above embodiment.

  ○ The driver's trap information to be created is anything other than the eight items described in the above embodiment as long as it is useful for determining whether the driver is a regular user by detecting the trap. Also good. For example, the following items can be mentioned.

  The security ECU 100 may create how many seconds after the driver's seat door is opened as the driver's trap information. In this case, the security ECU 100 measures the time from when the open signal is input to when the start signal is input by the timer circuit 102.

  In the above embodiment, the security ECU 100 starts detecting the driver's eyelid from the time when the open signal is input from the door opening / closing detection unit 31, and detects the door lock / unlock state of the vehicle 3 door. The detection of the driver's wrinkle is terminated when the locking signal is input from (not shown), but is not limited thereto. For example, the security ECU 100 may start detecting the driver's eyelid from the time when a start signal is input from the engine start detection unit 33 to the security ECU 100. Further, the security ECU 100 may end detection of the driver's bag when the open signal is input from the door opening / closing detection unit 31, or may be ended when the engine is stopped. Further, the security ECU 100 may end the detection of the driver's eyelid when the release signal is input from the seat belt attachment / detachment detection unit 32.

The configuration of the wrinkle detection unit 30 may not be the same as the configuration of the above embodiment as long as the driver's wrinkle can be detected.
In the above embodiment, when the security ECU 100 determines that the vehicle 3 has been stolen, the security ECU 100 gradually reduces the function of the vehicle 3. At this time, the function of the vehicle 3 to be reduced is that the suspicious person who has stolen the vehicle 3 is given discomfort by reducing the function, and the suspicious person's willingness to escape with the vehicle 3 is reduced. If it is. That is, the reduced functions of the vehicle 3 are a comfort function for comfortably driving the vehicle 3 and a function related to traveling of the vehicle 3. Therefore, for example, the function of the vehicle 3 may be lowered by blinking lights such as a headlight, an indicator lamp, and a room lamp, or by sounding a horn. Moreover, you may reduce the function of the vehicle 3 by repeating opening and closing of a window glass, or driving a wiper. Furthermore, the function of the vehicle 3 may be lowered by sounding noise through the speaker 26 without intentionally adjusting the radio tuning.

  In the above embodiment, the security ECU 100 requests the driver to input a password when the vehicle 3 may be stolen. However, when there is a possibility that the vehicle 3 has been stolen, the security ECU 100 may determine that the vehicle 3 has been stolen without requiring the driver to input a password.

The technical idea that can be grasped from the above embodiment will be described below.
(A) The vehicle antitheft device according to any one of claims 4 and 5, further comprising warning means comprising at least one of a display and a speaker, wherein the judging means drives the vehicle. An anti-theft vehicle anti-theft device that causes the warning means to warn the authorized user to drive safely when the driver is a regular user of the vehicle. If comprised in this way, when a regular user is driving on a kite different from a normal driving state, a regular user can be urged to perform safe driving. Therefore, a regular user can be aware of the fact that his / her driving state is different from normal, and can drive safely.

The block diagram which shows the electrical constitution of a vehicle antitheft device.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 3 ... Vehicle, 4 ... Vehicle antitheft device, 30 ... Haze detection part as a sensor, 60 ... Function reduction part as a function reduction means, 90 ... Haze recognition part as a memory | storage means, 91 ... Haze recognition engine as a memory | storage part 100 ... Security ECU as wrinkle detection means and determination means.

Claims (5)

Wrinkle detection means for generating wrinkle information in which a wrinkle of a driver of the vehicle is detected by a sensor arranged in the vehicle;
Storage means for pre-stored bag information of an authorized user of the vehicle;
The driver's trap information generated by the trap detection means is compared with the regular user's trap information stored in the storage means, and it is determined whether the vehicle has been stolen according to the comparison result. A judgment means to
A vehicle antitheft device comprising: a function lowering unit that reduces the function of the vehicle when the determining unit determines that the vehicle has been stolen. In the vehicle antitheft device according to claim 1,
The wrinkle detection means generates a plurality of wrinkle information of the driver,
The storage means stores a plurality of pieces of wrinkle information of the authorized user,
The determination unit compares the driver's trap information generated by the trap detection unit with the regular user's trap information stored in the storage unit, and the vehicle is stolen when at least two do not match. The vehicle antitheft device characterized by determining that the Wrinkle detection means for generating wrinkle information in which a wrinkle of a driver of the vehicle is detected by a sensor arranged in the vehicle;
Storage means in which the driver's bag information is stored in advance;
The driver driving the vehicle according to the comparison result by comparing the driver's trap information generated by the trap detection means with the regular user's trap information stored in the storage means. Determining means for checking whether or not the vehicle is an authorized user, and determining that the vehicle has been stolen when a driver driving the vehicle is not an authorized user of the vehicle;
A vehicle antitheft device comprising: a function lowering unit that reduces the function of the vehicle when the determining unit determines that the vehicle has been stolen. In the vehicle antitheft device according to claim 3,
The wrinkle detection means generates a plurality of wrinkle information of the driver,
The storage means stores a plurality of pieces of wrinkle information of the authorized user,
The determination means compares the driver's heel information generated by the heel detection means with the heel information of the authorized user stored in the storage means, and if at least two do not match, A vehicle anti-theft device for checking whether or not a driving driver is an authorized user of the vehicle. The vehicle antitheft device according to any one of claims 1 to 4,
The storage means includes a plurality of storage units provided corresponding to the identification information set for the plurality of regular users, respectively, and storing the trap information of the regular users corresponding to the identification information,
The determination unit acquires the identification information from the driver, selects the storage unit corresponding to the acquired identification information, and the normal user's trap information stored in the selected storage unit, and the trap detection The vehicle antitheft device characterized in that it compares the driver's bag information generated by the means.

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