JP2005225251A - Vehicular anti-theft device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To restrain a wrong alarm at a place where any alarm or reporting related to a position of a vehicle is unnecessary with regard to a vehicular anti-theft device. <P>SOLUTION: The device detects acts for vehicle theft (alarming factors) by using a courtesy switch, a hood switch, an intrusion sensor, and a tilt sensor. When any alarming factor is detected, in principle, the device determines that the vehicle theft is performed or could possibly be performed and warns and reports to the outside of the car with an alarm and a reporting machine. When the detected alarming factor is related to a tilt of the vehicle and the vehicle position upon detection is on the sea or in a tower parking, the device determines that oscillation not caused by vehicle theft but caused by moving on the sea or moving into a garage is generated, and it prohibits warning and reporting with the alarm and the reporting machine. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a vehicle antitheft device, and in particular, detects that a vehicle is stolen such as a vehicle itself, a vehicle component such as a tire, or an object placed inside the vehicle, and directs the vehicle outside when the theft is detected. The present invention relates to a vehicle antitheft device suitable for alarming or reporting.

2. Description of the Related Art Conventionally, there has been known a vehicle antitheft device that detects an action performed when a vehicle is stolen using a sensor installed in a vehicle and issues a security alarm toward the outside of the vehicle when the action is detected ( For example, see Patent Document 1). By the way, the vehicle may be subjected to an impact due to, for example, a strong wind or heavy rain, or a large vehicle such as a truck or vibration due to traffic of people. In this case, a sensor provided for vehicle theft is used for vehicle theft. If it reacts to the shock or vibration despite not being present, there will be an inconvenience that an alarm is erroneously issued due to disturbance factors other than the original theft. Therefore, the conventional apparatus includes a plurality of sensors for theft detection such as a human body detection sensor for detecting a human body, an impact sensor for detecting an impact applied to the vehicle, and a tilt sensor for detecting the tilt of the vehicle. The above-described false alarm is prevented by executing alarm control based on the combination of sensors.
JP 2000-6761 A

  For example, the above-described inclination sensor for theft detection is provided for the purpose of preventing vehicle theft due to tow movement or tire theft due to jack-up, and when the inclination of the vehicle is detected by such an inclination sensor. A security alarm is issued when a tow truck is moved or jacked up. However, this inclination sensor may detect the inclination of the vehicle, for example, when the vehicle is positioned on a ferry sailing on the sea or on a tower parking, in addition to the wrecker movement or jack-up. For this reason, in the above-described conventional apparatus, if the alarm is always issued when the alarm condition based on the sensor output is satisfied regardless of the current position of the vehicle, there is an inconvenience that an erroneous alarm is performed in a state where the vehicle is not stolen. It will occur.

  This invention is made in view of the above-mentioned point, and provides the antitheft device for vehicles which can suppress the false alarm in the place which does not require the alarm and report relevant to a vehicle position. Objective.

  The object is to provide a theft detection means for detecting an action performed when a vehicle is stolen, and an alarm or a report to the outside of the vehicle when the action is detected by the theft detection means. A vehicle antitheft device comprising: an alarm notification means for performing determination of whether or not the own vehicle is located at a place where it is not necessary to perform an alarm or notification by the alarm notification means; This is achieved by a vehicle antitheft device comprising: an operation restriction unit that restricts the operation of the alarm notification unit based on the determination result of the vehicle position determination unit.

  In the first aspect of the present invention, it is determined whether or not the own vehicle is located in a place where it is not necessary to issue an alarm or a report. In such a place, the operation of the alarm report means, that is, the alarm or the report is restricted. Therefore, even if an action performed at the time of vehicle theft is detected in a state where the vehicle is not stolen, it is avoided / suppressed that an alarm or the like is issued at the above-mentioned specific place, so that a false alarm at the specific place can be suppressed. It has been.

  In this case, as described in claim 2, in the vehicle antitheft device according to claim 1, the theft detection means detects a plurality of different actions, and the operation restriction means includes a plurality of actions If the action of the alarm reporting means by a predetermined action among the actions is limited, detection of a predetermined action that can be performed at a specific place in a state where no vehicle theft has occurred among a plurality of actions performed at the time of vehicle theft. Even if it is made, it is avoided / suppressed that an alarm or the like is issued due to the detection of the predetermined action at the specific place.

  According to a third aspect of the present invention, in the vehicle antitheft device according to the first or second aspect, the own vehicle position determining means is configured so that the theft detecting means detects the vehicle even if the own vehicle is not stolen. What is necessary is just to determine whether it is located in the place where a predetermined action can be detected.

  Further, as described in claim 4, in the vehicle antitheft device according to any one of claims 1 to 3, the vehicle position determination means determines whether or not the vehicle is located at sea or in tower parking. And determining that the operation limiting means is based on the output of a sensor for detecting the inclination of the vehicle when the vehicle position determining means determines that the host vehicle is located at sea or tower parking. If the operation of the vehicle is restricted, false alarms caused by the shaking of the vehicle that occurs when the vehicle is located at sea or in tower parking can be suppressed.

  In addition, as described in claim 5, in the vehicle antitheft device according to any one of claims 1 to 4, the vehicle position determining means is configured to position the vehicle in the location based on map data. It may be determined whether or not.

  According to the first to fifth aspects of the present invention, it is possible to suppress false alarms in places where alarms and reports related to the vehicle position are not required.

  FIG. 1 is a system configuration diagram of a vehicle antitheft device 10 mounted on a vehicle according to an embodiment of the present invention. As shown in FIG. 1, the vehicle antitheft device 10 of this embodiment is an electronic control provided to prevent theft of a vehicle such as a vehicle itself, a vehicle part such as a tire or an engine, or an object placed in the vehicle. A unit (hereinafter referred to as an anti-theft ECU) 12 is provided, and the anti-theft ECU 12 performs control for preventing vehicle theft.

  The anti-theft ECU 12 is supplied with a signal for distinguishing whether the vehicle door is locked or unlocked when the ignition is off. When all the vehicle doors are locked when the ignition is off, the anti-theft ECU 12 enters a security mode in which the vehicle theft is monitored based on the supplied locking signal, while any one of the vehicle doors is unlocked. If it is, an unset mode is entered in which monitoring of vehicle theft is canceled based on the supplied unlock signal.

  The anti-theft ECU 12 is connected with a courtesy switch 14, a hood switch 16, an intrusion sensor 18, and a tilt sensor 20 as sensors for detecting an action when the vehicle is stolen. The courtesy switch 14 outputs a signal corresponding to the opening / closing of the vehicle door such as the front, rear and luggage. The hood switch 16 outputs a signal corresponding to opening / closing of the front hood and rear hood of the vehicle. The intrusion sensor 18 outputs a signal corresponding to whether or not there is a person who enters the vehicle using, for example, ultrasonic waves. Further, the tilt sensor 20 outputs a signal according to whether or not the tilt of the vehicle from the horizontal has reached a predetermined angle or more.

  The anti-theft ECU 12 has an alarm factor detection unit 22 that detects an alarm factor that leads to vehicle theft. The alarm factor detector 22 is supplied with output signals from the switches 14 and 16 and the sensors 18 and 20, respectively. The alarm factor detection unit 22 detects the open / close state of the vehicle door based on the output signal of the courtesy switch 14, detects the open / close state of the vehicle hood based on the output signal of the hood switch 16, and outputs the output signal of the intrusion sensor 18. The presence or absence of a vehicle intruder is detected based on this, and it is detected whether the vehicle is tilted more than a predetermined angle based on the output signal of the tilt sensor 20.

  The anti-theft ECU 12 also has an alarm determination unit 24 connected to the alarm factor detection unit 22. The alarm determination unit 24 is supplied with the detection result from the alarm factor detection unit 22. Based on the detection result supplied from the alarm factor detection unit 22, the alarm determination unit 24 determines whether the vehicle intruder has opened the vehicle door or the vehicle hood based on the detection result supplied from the alarm factor detection unit 22. It is determined whether or not the vehicle is present, and whether or not the vehicle is tilted by a predetermined angle or more by a tow truck movement or jackup, and whether or not the vehicle is stolen or is likely to be performed in the future is determined.

  An alarm device 26 and a notification device 28 are connected to the alarm determination unit 24. The alarm device 26 issues an alarm by a siren, a horn, or voice guidance toward the outside of the vehicle in accordance with the operation signal supplied from the alarm determination unit 24. Further, in accordance with the operation signal supplied from the alarm determination unit 24, the reporting device 28 indicates that the vehicle has been stolen toward a center provided outside the vehicle or a portable terminal carried by the vehicle owner or vehicle driver. It is a device to report. When it is determined that the vehicle is stolen or performed according to the above-described method, the alarm determination unit 24 supplies an operation signal that instructs the alarm device 26 and the notification device 28 to issue an alarm and a notification.

  A vehicle position detection ECU 30 is also connected to the alarm determination unit 24. The vehicle position detection ECU 30 constitutes a navigation system that includes a map database storing map data and a GPS receiver that receives GPS signals, and has a function of measuring the current position of the host vehicle. In the map database, as map data, data for distinguishing between places where it is not necessary to perform alarms / reports by the alarm device 26 and the report device 28 and locations where it is necessary, specifically, vehicles on the vehicle during navigation Data indicating whether the vehicle is on the sea such as on a ferry or on a plane that can tilt more than a predetermined angle without being stolen, and whether it is tower parking that can tilt the vehicle when entering the garage Is stored. Note that the map data may be recorded on a recording medium such as a DVD of a navigation device mounted on the vehicle, or has an information center or the like, and if necessary, an in-vehicle navigation device via a communication network. It may be transmitted to.

  After measuring the current position of the host vehicle, the vehicle position detection ECU 30 determines whether the current position is at sea or in tower parking, and supplies the determination result to the alarm determination unit 24. As will be described later in detail, the alarm determination unit 24 determines whether to permit or prohibit the operation of the alarm device 26 and the notification device 28 based on the determination result supplied from the vehicle position detection ECU 30.

  Next, operation | movement of the antitheft device 10 for vehicles of a present Example is demonstrated.

  In this embodiment, when the ignition is on and when any vehicle door is unlocked even when the ignition is off, the anti-theft device 10 performs the vehicle theft by the anti-theft ECU 12. You are in unset mode to cancel monitoring. If all vehicle doors are locked when the ignition is off from this state, the anti-theft device 10 shifts to a security mode in which the anti-theft ECU 12 monitors the vehicle theft.

  The alarm factor detection unit 22 of the anti-theft ECU 12 uses the courtesy switch 14, the hood switch 16, the intrusion sensor 18, and the tilt sensor 20 to issue an alarm / report by the alarm device 26 and the notification device 28 that are directly connected to the theft of the vehicle. It is detected whether or not an alarm factor to be performed is generated, and further, if such an alarm factor is generated, the alarm factor is specified. Further, the alarm determination unit 24 of the anti-theft ECU 12 acquires the detection result in the alarm factor detection unit 22, and the data related to the current position of the own vehicle from the vehicle position detection ECU 30, specifically, the current position of the own vehicle is maritime or tower parking. Data indicating whether or not there is.

  When the alarm determination unit 24 detects that the alarm factor described above has occurred in the security mode as a result of acquiring the data, the alarm factor further indicates that the vehicle is tilted more than a predetermined angle. It is determined whether or not. When it is determined that the vehicle is not located at sea or in tower parking at that time, it is determined that the vehicle is stolen or may be performed regardless of the determination result of the alarm factor. 26 and an alarm 28 are supplied with an operation signal instructing to issue an alarm and a notification.

  Also, when it is determined that an alarm factor has occurred in the security mode and the host vehicle is located at sea or tower parking, when the alarm factor is not that the vehicle is tilted more than a predetermined angle, That is, even when the vehicle door or the vehicle hood is open or when there is a vehicle intruder, it is determined that the vehicle is stolen or can be performed, and the alarm device 26 and the notification device 28 are used. An operation signal for instructing to issue an alarm and a report is supplied.

  On the other hand, when the alarm determination unit 24 determines that the host vehicle is located at sea or tower parking at the above-described time point, if the alarm factor is only that the vehicle is tilted more than a predetermined angle, the vehicle is stolen by the host vehicle. Therefore, it is determined that there is a vibration caused by maritime movement or garage movement in tower parking, and supply of the operation signal to the alarm device 26 and the notification device 28 is prohibited.

  FIG. 2 shows a flowchart of an example of a control routine executed by the anti-theft ECU 12 in the vehicle anti-theft device 10 of this embodiment in order to realize the above function. The routine shown in FIG. 2 is a routine that is repeatedly activated every predetermined time in the security mode. When the routine shown in FIG. 2 is started, first, the process of step 100 is executed.

  In step 100, the courtesy switch 14, the hood switch 16, the intrusion sensor 18, and the inclination sensor 20 are used to detect whether or not an alarm factor that leads to theft of the vehicle has occurred. As a result, when it is detected that no alarm factor has occurred, the current routine is terminated without any further processing. On the other hand, if it is detected that any alarm factor has occurred, the process of step 102 is executed next.

  In step 102, data relating to the current position of the host vehicle supplied from the vehicle position detection ECU 30, specifically, data indicating whether the current position of the host vehicle is at sea or tower parking is executed.

  In step 104, based on the alarm factor detected in the step 100 and the current position of the host vehicle acquired in the step 102, it is determined whether the vehicle is stolen or can be performed. It is determined whether the alarm / notification operation by the alarm device 26 and the notification device 28 is permitted. As a result, if the vehicle's current position is not at sea or tower parking, or if the vehicle is leaning more than a predetermined angle even if the vehicle's current position is at sea or tower parking, the vehicle is stolen. It is determined that it is being performed or can be performed in the future, it is determined that the alarm / notification operation by the alarm device 26 and the notification device 28 is permitted, and then the processing of step 106 is executed.

  In step 106, a process of supplying an operation signal instructing alarming and reporting to the alarming device 26 and the reporting device 28 is executed. When the processing of this step 106 is executed, the alarm device 26 and the notification device 28 are subsequently operated, and an alarm and notification due to theft of the vehicle are issued to the outside of the vehicle. When the processing of step 106 is completed, the current routine is terminated.

  On the other hand, when the current position of the vehicle is at sea or tower parking in the above step 104 and the alarm factor is that the vehicle is tilted more than a predetermined angle, the vehicle has not encountered theft, Judging that it is swaying due to maritime movement by airplane or garage movement in tower parking, and judging that the operation of alarm / report by alarm device 26 and alarm device 28 should be restricted, Next, the processing of step 106 is jumped and the current routine is terminated.

  According to the routine shown in FIG. 2 above, when an action (alarm factor) that is performed when the vehicle is stolen, such as a vehicle itself, a vehicle component such as a tire or an engine, or a vehicle that is placed in the vehicle, is generally warned. While the alarm 26 and the alarm 28 can be activated by the alarm 26 and the alarm 28, the alarm factor detected in the situation where the current position of the vehicle is at sea or tower parking is related to the inclination of the vehicle using the inclination sensor 20. In some cases, the operation of the alarm device 26 and the alarm device 28 can be prohibited exceptionally.

  At sea and tower parking, even if the vehicle is not stolen, the vehicle may be shaken due to maritime movement by ferry ship or airplane or garage movement in tower parking. The tilt sensor 20 described above may react. In this regard, the operation of the alarm device 26 and the notification device 28 is prohibited when the alarm factor relates to the inclination of the vehicle using the inclination sensor 20 in the situation where the current position of the vehicle is at sea or tower parking as described above. Thus, even when the tilt sensor 20 shows a reaction caused by a vehicle shake that occurs when the vehicle is located at sea or tower parking, it is avoided / suppressed that an alarm or a report is issued due to the shake. The Rukoto.

  Therefore, according to the vehicle antitheft device 10 of the present embodiment, the vehicle position detected using the map data is a place where an alarm or notification based on the detection result of the inclination sensor 20 is not required (specifically, When the vehicle is at sea or tower parking), it is possible to avoid / suppress unnecessary alarms and false alarms resulting from detection of vehicle theft by the inclination sensor 20. For this reason, there is no inconvenience caused by a false alarm around the vehicle, and there is no distrust in the anti-theft system caused by a false alarm for the vehicle owner or the vehicle driver. An increase in power consumption due to an alarm is suppressed.

  Further, in the present embodiment, in order to suppress false alarms caused by disturbance elements other than theft of the vehicle to which the inclination sensor 20 reacts (specifically, a vehicle shake that occurs when the vehicle is located at sea or tower parking). In addition, the current position of the vehicle based on the map data is considered. This vehicle position can be detected using an existing navigation system including the vehicle position detection ECU 30. Therefore, according to the configuration of the present embodiment, it is not necessary to install a dedicated sensor or the like in order to suppress false alarms caused by the disturbance element, and therefore, it is relatively inexpensive and has a simple configuration. The false alarm suppression effect can be realized.

  In the above embodiment, the alarm factor detection unit 22 of the anti-theft ECU 12 uses the courtesy switch 14, the hood switch 16, the intrusion sensor 18, and the tilt sensor 20 to detect an action performed at the time of vehicle theft. The “theft reporting means” described in the claims is executed by the alarm determination unit 24 by executing the process of step 106 in the routine shown in FIG. By determining whether or not the vehicle is located at sea or in tower parking based on the vehicle position data supplied from the vehicle position detection ECU 30, the “vehicle position determination means” described in the claims is An alarm factor detected as an act that is performed when the vehicle is stolen in a situation where the vehicle is located at sea or in tower parking is the inclination of the vehicle The "operation restriction means" described in the claims by prohibiting the operation of the alarm device 26 and communicator 28 when it relates are realized respectively.

  By the way, in the above-described embodiment, only when the alarm factor detected as the vehicle theft is related to the inclination of the vehicle using the inclination sensor 20 when the own vehicle is located at sea or in the tower parking, it is exceptional. Although the operation of the alarm device 26 and the notification device 28 is prohibited, the operation prohibition may be performed when any alarm factor is detected.

  In the above embodiment, when the vehicle is located at sea or in tower parking, when the alarm factor detected as the vehicle theft is related to the inclination of the vehicle using the inclination sensor 20, the alarm 26 and The operation of the reporting device 28 is both restricted by prohibition, but the operation is restricted by suppression, that is, the operation is not completely prohibited, the alarm level is suppressed to a small level, or the contents of the report are stolen. It is good also as changing to the thing with a low form level. For example, while the alarm device 26 prohibits the alarm output from the vehicle, the alarm device 28 may notify only the center, the vehicle owner, or the like. Additional information such as “The vehicle is located at sea” may be added.

  Further, in the above-described embodiment, as a place where it is not necessary to perform an alarm operation by the alarm device 26 and a notification operation by the notification device 28, the inclination sensor 20 is not less than a predetermined angle even though the vehicle is not stolen. However, the present invention is not limited to this, and the present invention is not limited to this. What is necessary is just to assume the specific place where the action performed at the time of vehicle theft is detected from a sensor. For example, when a vehicle theft is detected using sound, an action performed at the time of vehicle theft is detected from a switch or sensor at an airport or an airfield where explosion noise may occur even though the vehicle is not stolen. It may be assumed as a specific place. Also in this case, the operation of the alarm device 26 and the notification device 28 may be both restricted by prohibition, or the operation of at least one of them may be restricted by suppression as described above.

  In the above-described embodiment, when a vehicle theft is detected, both the alarm by the alarm device 26 and the notification by the notification device 28 are performed. However, either one may be configured.

  Further, in the above-described embodiment, as alarm factors detected as vehicle theft, vehicle door opening using the courtesy switch 14, vehicle hood opening using the hood switch 16, and vehicle intrusion using the intrusion sensor 18 are used. Is assumed to be more than a predetermined angle of the vehicle using the inclination sensor 20, but may be a configuration assuming only a part of them, or glass breakage using a glass breakage sensor, etc. May be further assumed as an alarm factor.

  Further, in the above-described embodiment, the inclination sensor 20 that outputs a signal according to whether or not the inclination of the vehicle from the horizontal has reached a predetermined angle or more is provided, and the inclination sensor 20 is used as a warning factor due to the vehicle theft. It is determined whether or not the vehicle is towed or the vehicle is jacked up based on the output of the vehicle, but the inclination angle (that is, the roll angle and the pitch angle) about the longitudinal axis and the lateral axis from the horizontal of the vehicle A tilt sensor 20 that outputs a signal corresponding to the tilt angle is detected, the tilt angle from the level of the vehicle is detected based on the output signal of the tilt sensor 20, and the detected tilt angle is used as a warning factor due to vehicle theft. Based on the waveform, it may be determined whether tow truck movement, body jack-up, or intentional body shaking by a person.

1 is a system configuration diagram of a vehicle antitheft device that is an embodiment of the present invention. It is a flowchart of the control routine performed in the vehicle antitheft device of the present embodiment.

Explanation of symbols

10 Vehicle Antitheft Device 12 Antitheft ECU
DESCRIPTION OF SYMBOLS 20 Inclination sensor 22 Alarm factor detection part 24 Alarm determination part 26 Alarm device 28 Notification device 30 Vehicle position detection ECU

Claims (5)

A theft prevention device for a vehicle comprising: a theft detection means for detecting an action performed at the time of vehicle theft; and an alarm notification means for issuing an alarm or notification toward the outside of the vehicle when the action is detected by the theft detection means. Because
Own vehicle position discriminating means for discriminating whether or not the own vehicle is located in a place where it is not necessary to perform alarm or report by the alarm reporting means;
An operation restricting means for restricting the operation of the alarm reporting means based on the determination result of the vehicle position determining means;
The antitheft device for vehicles characterized by comprising. The theft act detecting means detects a plurality of the acts different from each other,
The vehicle antitheft device according to claim 1, wherein the operation restricting means restricts the operation of the alarm reporting means by a predetermined action among the plurality of actions.   The vehicle position determination means determines whether or not the vehicle is located at a place where a predetermined action can be detected by the theft action detection means even if the vehicle is not stolen. Or the antitheft device for vehicles according to 2. The vehicle position determination means determines whether the vehicle is located at sea or tower parking,
The operation restricting means restricts the operation of the alarm reporting means based on the output of a sensor for detecting the inclination of the vehicle when the own vehicle position determining means determines that the own vehicle is located at sea or tower parking. The antitheft device for vehicles according to any one of claims 1 to 3 characterized by things.   The vehicle antitheft device according to any one of claims 1 to 4, wherein the vehicle position determining means determines whether or not the vehicle is located at the location based on map data.

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