JP2006123672A - Theft alarm system for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress the generation of erroneous alarm due to mere behavior of peeking into by a passerby, and maintain minimum antitheft performance when a hood is in an open state, and to enable to take measures to maintain the antitheft performance when some tricks are made to a detection sensor for opening/closing of the hood by a thief even in a closed state of the hood and enable the user to recognize that. <P>SOLUTION: The theft alarm system for the vehicle in a convertible is provided with a switch for opening/closing of the hood for detecting the open/closed state of the hood. When the switch for opening/closing of the hood detects that the hood is in the open state in an alert state, sensing with an intrusion sensor is regulated by a control unit, while the theft detection with a door opening detection sensor is made to be continued and an informing speaker informs that the hood is in the open state. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a vehicle burglar alarm device in an open car.

  Conventionally, as in Patent Document 1, for example, an intrusion sensor composed of an ultrasonic transmitter and an ultrasonic receiver is provided in the center of the front header of an open car, and it is detected that a person has entered the vehicle interior. A vehicle burglar alarm device that receives a detection signal and issues a predetermined alarm is known.

  However, in such a vehicle burglar alarm device, when the open car hood is in an open state, a mere look-in action of passers-by, butterflies, newspapers, etc. cross the passenger compartment, and the intrusion sensors There is a problem that many false alarms are generated by detecting movement.

  As described in Patent Document 2, when the detection sensor for detecting the open / closed state of the hood detects that the hood is in the open state, the operation of the burglar alarm device itself is stopped and no alarm is issued. However, when the hood is in an open state, no security improvement can be expected by any burglar alarm device, and the thief easily allows theft.

Therefore, in the alert state in the closed state of the hood, a theft alarm based on an intrusion sensor for detecting an intruder into the vehicle compartment and a theft operation detection sensor different from the intrusion sensor (for example, in a state where there is no keyless door unlocking) Both in response to a theft alarm based on a sensor that detects that the door has been opened, etc., and in the alert state in the open state of the hood, the theft device based on the intrusion sensor is prohibited and theft based on the theft operation detection sensor. The alarm is activated. With this configuration, a certain anti-theft alarm operates in the alert state regardless of the open / closed state of the hood, so that the minimum anti-theft performance can be maintained.
JP 2000-142324 A (FIG. 2) Japanese Utility Model Publication No. 4-104058

  However, in a warning state when the hood is open, it is conceivable that a thief may misuse the burglar alarm based on the intrusion sensor. That is, before the burglar alarm device enters a warning state (for example, the vehicle is not door-locked, that is, before the warning state, the thief opens the hood and opens the hood open / close detection sensor to the outside). As long as the thief crafts the hood open / close detection sensor so that it is detected that the hood is always open when exposed (for example, the hood open / close detection sensor so that the thief is detected to be normally open). The burglar alarm based on the intrusion sensor is disabled in a situation that the user cannot recognize even if the user closes the hood and then shifts to a warning state by a door lock operation etc. That is, sensing of an intrusion sensor or a predetermined alarm is not performed), and a new problem occurs that an intruder can easily be stolen.

  The present invention has been made in view of such a point, and the object of the present invention is to suppress the occurrence of a false alarm by a mere look-in operation of a passerby when the hood is in an open state. While maintaining the anti-theft performance, even when the hood is closed, if the hood open / close detection sensor is crafted by a thief, the user can recognize this, and the countermeasures for maintaining the anti-theft performance can be enhanced. Like that.

  In order to achieve the above object, in the first invention, a detection wave is transmitted continuously or intermittently into the vehicle interior in a warning state, and a reflected wave of the detection wave is received to detect an intruder intrusion. Separately from the first sensor, the second sensor for detecting a predetermined theft operation different from the intruder entering the vehicle interior, and the first sensor detects a predetermined change in the reflected wave. Or when the second sensor detects a predetermined theft operation of an intruder, the vehicle theft alarm device in an open car provided with an alarm means for performing a predetermined alarm is targeted.

  And a third sensor for detecting the open / closed state of the hood, and when the hood is detected to be open by the third sensor, sensing by the first sensor or when the first sensor detects a predetermined change in the reflected wave When the hood is in an open state when the warning state is set, and a notification means for performing a predetermined notification when the hood is in an open state.

  According to the above configuration, first, when it is detected by the third sensor that the hood is in an open state, sensing by the first sensor or when the first sensor detects a predetermined change in the reflected wave by the restricting means. Since the alarm by the alarm means is restricted, even if a butterfly or a newspaper enters the passenger compartment, the predetermined alarm is not performed. In addition, when shifting to the alert state, when it is detected by the third sensor that the hood is in an open state, a predetermined notification is given by the notification means and the user is informed so, so Visually check the open state of the hood. Since the second sensor is operating, when a predetermined theft operation by an intruder is detected by the second sensor, a predetermined alarm is given by the alarm means.

  On the other hand, when the hood is in the closed state, the regulating means does not operate. Therefore, when an intruder enters the passenger compartment, the reflected wave of the detection wave transmitted from the intrusion sensor is disturbed by the movement of the intruder. The intrusion sensor detects that there is an intruder. As a result, a predetermined alarm is issued by the alarm means. Since the second sensor is also activated at the same time, when a predetermined theft operation by an intruder is detected by the second sensor, a predetermined alarm is issued by the alarm means. On the other hand, the notification means does not perform predetermined notification.

  In the second invention, the restriction by the restriction means is released based on the user's operation.

  According to the above configuration, even if the third sensor does not always operate for some reason, the regulation by the regulation means is forcibly released by the user's operation, so sensing by the first sensor is performed, When the first sensor detects an intruder, an alarm is issued by the alarm means.

  In a third invention, the third sensor is provided in a front header and is configured to detect an open / closed state of the hood based on whether or not the hood is in contact with the motor. A fourth sensor for detecting the open / closed state of the hood based on the driving state of the motor, and the notification means does not perform a predetermined notification when the opening of the hood is detected based on the fourth sensor.

  According to the above configuration, in addition to the third sensor for detecting the open / closed state of the hood based on whether or not the hood is in contact, the fourth sensor that is not easily crafted by a thief is provided, and the motor for driving the hood to open / close is provided. The open / close state of the hood is detected based on the driving situation. When the fourth sensor detects that the hood is not in the closed position, since the probability that the hood is actually opened is high, the notification means does not perform a predetermined notification.

  As described above, the vehicle burglar alarm device according to the first aspect of the present invention includes the third sensor for detecting the open / closed state of the hood, and when the hood is in a warning state, the third sensor When it is detected that there is a detection, the restriction means restricts the sensing by the first sensor or the alarm means by the alarm means when the first sensor detects a predetermined change in the reflected wave, while the theft detection of the second sensor continues. In addition, a notification that the hood is in the open state is made by the notification means. For this reason, it is possible to prevent the first sensor from making a false alarm simply by looking into a passerby when the hood is in an open state, or by passing a butterfly, newspaper, etc. across the passenger compartment. Further, even if the third sensor is crafted and the theft detection by the first sensor is stopped, the third sensor is crafted when a predetermined notification is issued even though the hood is visually closed. It is possible to know when the device enters the alert state, so that deterioration of security can be prevented.

  According to the second aspect, the restriction by the restriction means can be forcibly released based on the user's operation. For this reason, if the third sensor determines that the hood is open when the third sensor is actually closed due to a malfunction or thief work, the third sensor is immediately repaired. Since it cannot be restored to the normal state, the alarm operation by the first sensor can be performed until the regulation by the regulation means is forcibly canceled and the third sensor is repaired. Therefore, further deterioration of security can be prevented.

  According to the third aspect of the invention, when the fourth sensor that detects the open / close state of the hood based on the driving state of the motor detects that the hood is in the open state, the notification means does not perform notification. . For this reason, notification can be performed only when necessary.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, the following embodiment is an essentially preferable illustration, Comprising: It does not intend restrict | limiting the range of this invention, its application thing, or a use.

  FIG. 1 shows an open car including a vehicle burglar alarm device 1 according to an embodiment of the present invention, and FIG. 2 shows a configuration of the vehicle burglar alarm device 1. The vehicle burglar alarm device 1 has an intrusion sensor 2, which transmits a radio wave as a detection wave continuously or intermittently in a vehicle interior in a warning state such as after a door lock, and reflects it. The first sensor is configured to detect an intruder intrusion by receiving a reflected radio wave as a wave. Although not shown in detail, the intrusion sensor 2 includes a radio wave transmitter and a radio wave receiver. For example, the intrusion sensor 2 is disposed on the front header 12 so that the radio wave is transmitted toward the vehicle interior. When the disturbance of the reflected radio wave is detected, it is determined that an intruder has entered the vehicle compartment, and the signal is transmitted to the control unit 3.

  The vehicle burglar alarm device 1 includes a door opening detection sensor 4 in addition to the intrusion sensor 2, and the door opening detection sensor 4 detects a predetermined theft operation different from an intruder entering the vehicle interior. It is configured as two sensors. The door opening detection sensor 4 is configured to detect that an intruder or the like has opened the door 13 by a method other than a key or keyless entry and send a signal to the control unit 3 in a warning state.

  The vehicle burglar alarm device 1 has a hood open / close detection switch 5 as a third sensor for detecting the open / closed state of the hood 11. When the hood 11 is open, the hood open / close detection switch 5 is turned off, and when the hood 11 is closed, it is turned on. The ON / OFF signal of the hood open / close detection switch 5 is transmitted to the control unit 3.

  The motor 6 that opens and closes the hood 11 is provided with a potentiometer 7 as a fourth sensor. Since the potentiometer 7 detects the position coordinates of the open end 11a of the hood 11, it is possible to detect the exact open / closed state of the hood 11. A position coordinate signal from the potentiometer 7 is transmitted to the control unit 3.

  When the signal from the keyless transmitter 8 is transmitted to the control unit 3 and the door unlock signal is received from the keyless transmitter 8, the door open detection sensor 4 operates even if the user opens the door 13. It is supposed not to.

  The control unit 3 detects when the intrusion sensor 2 detects a predetermined change in the reflected radio wave, or the door open detection sensor 4 detects that an intruder has opened the door 13 by a method other than a key or keyless entry. Then, a signal is sent to the alarm horn 9 as an alarm means so as to give an alarm.

  On the other hand, the control unit 3 also has a role as a regulating means for regulating sensing by the intrusion sensor 2 when the hood 11 is detected to be open by the hood opening / closing detection switch 5.

  Further, when the hood 11 is in the open state when the control unit 3 is in a warning state, the control unit 3 sends a signal to a notification speaker 10 as a notification means to generate a notification sound.

-Description of operation-
Next, the operation of the vehicle burglar alarm device 1 according to the present embodiment will be described with reference to FIG.

  First, in a normal non-warning state, the intrusion sensor 2 is OFF.

  In step S <b> 1, it is determined whether the user has locked the door with the keyless transmitter 8. When the user locks the door with the keyless transmitter 8, the process proceeds to step S2. On the other hand, when the user does not lock the door with the keyless transmitter 8, the process returns to the return.

  In step S2, a warning state is entered after elapse of a predetermined time (for example, 20 seconds), and the process proceeds to step S3.

  Next, in step S3, when the alert state is reached, the hood open / close detection switch 5 determines whether the hood 11 is open. When it is determined that the hood open / close detection switch 5 is ON and the hood 11 is closed, the process proceeds to step S4. On the other hand, when it is determined that the hood open / close detection switch 5 is OFF and the hood 11 is open, the process proceeds to step S5.

  In step S4, the intrusion sensor 2 and the door open detection sensor 4 are operated to detect theft. That is, the intrusion sensor 2 is turned on, and radio waves are transmitted from the intrusion sensor 2 continuously or intermittently into the vehicle interior. The intrusion sensor 2 may transmit radio waves continuously after being turned on, or may transmit radio waves every few seconds for several seconds. Since there is no change in the reflected radio wave when there is no intruder, the intrusion sensor 2 determines that there is no intruder. When the door opening detection sensor 4 does not detect that the door 13 is opened by a method other than the key or keyless entry in the alert state, the door opening detection sensor 4 determines that there is no intruder. As described above, when neither the intrusion sensor 2 nor the door open detection sensor 4 detects an abnormality, the theft detection signal is not sent to the control unit 3, and the process proceeds to step S6. On the other hand, the reflected radio wave due to the radio wave transmitted by the intrusion sensor 2 is disturbed, and the change is detected by the intrusion sensor 2 or the door open detection sensor 4 detects that the door 13 is opened by a method other than the key or keyless entry. If so, a theft detection signal is sent to the control unit 3, and the process proceeds to step S6.

  In step S5, the potentiometer 7 determines whether the hood 11 is really open. When the potentiometer 7 detects the position coordinates of the open end 11a of the hood 11 and detects that the hood 11 is closed, the process proceeds to step S7. On the other hand, when the potentiometer 7 detects that the hood 11 is in the open position, the fact that the hood 11 is actually open is apparent when the user looks at the hood 11, so there is no need for notification. Fly to S9.

  In step S7, the hood open / close detection switch 5 determines that the hood 11 is open. However, since the hood 11 is actually closed, the hood 11 is open only for the first time in order to notify the abnormality. Is notified by the notification speaker 10. This notification is not performed thereafter until the user again locks the door with the keyless transmitter 8. Next, the process proceeds to step S8.

  By listening to the notification in step S7, the user can know that there is an abnormality in the hood opening / closing detection switch 5 and forcibly enter the alert state. Therefore, in step S8, it is determined whether or not there is an instruction to forcibly enter the alert state by, for example, pressing and holding the keyless transmitter 8 within one minute after the door is locked. When the user gives an instruction to enter the alert state, the process proceeds to step S4. When there is no instruction, the process proceeds to step S9.

  In step S9, the intrusion sensor 2 remains OFF, the theft sensor 2 does not detect the theft, and the theft detection sensor 4 only detects the theft. That is, when the door opening detection sensor 4 does not detect that the door 13 is opened by a method other than the key or keyless entry in the alert state, the door opening detection sensor 4 determines that there is no intruder. At this time, no signal is sent to the control unit 3, and the process proceeds to step S6. On the other hand, when the door opening detection sensor 4 detects that the door 13 is opened by a method other than the key or keyless entry, a theft detection signal is sent to the control unit 3 and the process proceeds to step S6.

  In step S6, it is determined whether a theft detection signal has been sent. When the theft detection signal is received, the process proceeds to step S10. On the other hand, when the theft detection signal is not received, the process jumps to step S11.

  In step S10, an alarm is issued by the alarm horn 9, and the process proceeds to step S11.

  In step S <b> 11, it is determined whether the user has unlocked the door 13 by the keyless transmitter 8. When the door 13 is not unlocked, the process returns to step S3 and the above routine is repeated. On the other hand, when the door 13 is unlocked, the alert state is terminated.

-Effect of the embodiment-
Therefore, according to the vehicle burglar alarm device 1 according to the embodiment of the present invention, the hood open / close detection switch 5 for detecting the open / closed state of the hood 11 is provided. When it is detected that the hood 11 is in the open state, the control unit 3 regulates the sensing by the intrusion sensor 2, while the door opening detection sensor 4 continues to detect theft, and the notification speaker 10 causes the hood 11 to The notification that it is in the open state is made. For this reason, it is possible to prevent the intrusion sensor 2 from making a false alarm simply by looking into a passerby when the hood 11 is open in a warning state, or by passing a butterfly, newspaper, etc. across the passenger compartment. Even if the detection of theft by the intrusion sensor 2 is stopped, whether the hood open / close detection switch 5 is crafted when a predetermined notification is issued even though the hood 11 is visually closed. Since it is known when a warning state is entered, it is possible to prevent deterioration of security.

  In the present embodiment, the restriction by the control unit 3 can be forcibly released based on the user's operation. For this reason, when the hood open / close detection switch 5 erroneously determines that the hood 11 is open even though the hood 11 is actually closed due to failure or thief work, etc. Since the hood open / close detection switch 5 cannot be repaired and the normal state cannot be restored, the alarm by the intrusion sensor 2 until the control by the control unit 3 is forcibly released and the hood open / close detection switch 5 is repaired. Actuation can be performed. Therefore, further deterioration of security can be prevented.

  In this embodiment, when the potentiometer 7 of the motor 6 detects that the hood 11 is in the open state, the notification by the notification speaker 10 is not performed. For this reason, notification can be performed only when necessary.

(Other embodiments)
The present invention may be configured as follows with respect to the above embodiment.

  That is, in the said embodiment, although the 1st sensor uses the electromagnetic wave as a detection wave, the sensor using acoustic waves and electromagnetic waves, such as an ultrasonic wave, may be sufficient.

  In the above embodiment, the second sensor is the door opening detection sensor 4. However, the second sensor is a vibration sensor that detects the vibration of the vehicle, a tilt sensor that detects that the vehicle is tilted by a wrecker or a jackup, and the like. Two sensors may be configured. Further, the second sensor may be a motion sensor arranged in a trunk or a hood, and these may be combined.

  Moreover, in the said embodiment, although the alerting | reporting means was the alerting speaker 10, it is not restricted to this, For example, you may alert | report to a user by blinking a hazard lamp.

  Further, in the above embodiment, when the control unit 3 as the restricting means detects the open state of the hood 11 by the hood opening / closing detection switch 5, the sensing by the intrusion sensor 2 is regulated. Alternatively, only the alarm by the alarm horn 9 may be restricted by always turning on in the alarm state.

  As described above, the present invention is useful for a vehicle theft alarm device in an open car that includes an intrusion sensor and a sensor that detects a predetermined theft operation different from an intruder entering a vehicle compartment.

It is a side view of an open car provided with the burglar alarm device for vehicles concerning the embodiment of the present invention. It is a block diagram of the vehicle burglar alarm device. It is a flowchart which shows the action | operation of the vehicle burglar alarm apparatus.

Explanation of symbols

1 Vehicle Burglar Alarm Device 2 Intrusion Sensor (First Sensor)
3 Control unit (regulatory means)
4 Door open detection sensor (second sensor)
5 Top open / close detection switch (third sensor)
6 Motor 7 Potentiometer (4th sensor)
8 Keyless transmitter 9 Alarm horn (alarm means)
10 Notification speaker (notification means)
11 hood

Claims (3)

A first sensor that transmits a detection wave continuously or intermittently into the passenger compartment in a warning state, receives a reflected wave of the detection wave, and detects an intruder intrusion; And a second sensor for detecting a predetermined theft operation different from the intrusion into the vehicle interior, and when the first sensor detects a predetermined change in the reflected wave, or the second sensor performs a predetermined theft operation of the intruder. A vehicle theft alarm device in an open car provided with alarm means for performing a predetermined alarm when
A third sensor for detecting the open / closed state of the hood;
Restriction means for restricting sensing by the first sensor or an alarm by the alarm means when the first sensor detects a predetermined change in the reflected wave when the hood detects the open state by the third sensor;
A vehicle burglar alarm device comprising: a notification means for performing a predetermined notification when the hood is in an open state when entering the warning state. The vehicle burglar alarm device according to claim 1,
A burglar alarm device for a vehicle, which is configured to release the restriction by the restriction means based on a user operation. The vehicle burglar alarm device according to claim 1,
The third sensor is provided on a front header and configured to detect an open / closed state of the hood based on whether or not the hood is in contact.
A motor for opening and closing the hood,
A fourth sensor for detecting the open / closed state of the hood based on the driving status of the motor,
The vehicle burglar alarm device, wherein when the opening of the hood is detected based on the fourth sensor, the notification means does not perform a predetermined notification.

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