JP2016022846A - Theft prevention device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a theft prevention device which allows a user to select an alarming sound according to its taste, for easy determination whether the alarming sound is being outputted from an own vehicle or not.SOLUTION: A theft prevention device includes an acceleration sensor 2 capable of detecting change in an inclination angle of a vehicle, start of moving, or vibration provided with the vehicle, and output means 4 which outputs a predetermined alarming sound based on the detection with the acceleration sensor 2. It includes control means 5 which allows the alarming sound that is arbitrarily selected by an operator to be outputted by the output means 4.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an antitheft device for preventing theft of a vehicle.

  2. Description of the Related Art Conventionally, a vehicle antitheft device such as a motorcycle has a sensor that can detect a change in the tilt angle of a vehicle, a movement start, or vibration applied to the vehicle, and a predetermined alarm sound (alarm sound) based on detection by the sensor. And an output means for outputting. In such a conventional antitheft device, an alarm sound to be output is determined in advance, and detection (the change in the tilt angle of the vehicle, the start of movement or the vibration applied to the vehicle) is detected by a sensor. And a predetermined warning sound can be output. In addition, since this prior art is not related to the literature known invention, there is no prior art document information to be described.

  However, in the above prior art, since a predetermined alarm sound is output, when a plurality of vehicles are densely parked or when a vehicle is parked in a densely populated area, etc., from the own vehicle It has been difficult to determine whether the alarm sound is output or the alarm sound output from another vehicle. In particular, it is often the case that you hear a warning sound at a location that is usually away from the vehicle and you cannot see your vehicle (such as in a house), so determine whether the warning sound is being output from your vehicle. Has become extremely difficult.

  The present invention has been made in view of such circumstances, and allows a user to select an alarm sound according to his / her preference, and whether or not the alarm sound is output from his / her vehicle. An object of the present invention is to provide an anti-theft device that can easily make a determination.

  According to the first aspect of the present invention, there is provided a detecting means capable of detecting a change in the tilt angle of the vehicle, a movement start or vibration applied to the vehicle, and an output means for outputting a predetermined alarm sound based on the detection by the detecting means. The anti-theft device comprising: a control means capable of causing the output means to output an alarm sound arbitrarily selected by an operator.

  According to a second aspect of the present invention, in the antitheft device according to the first aspect, the vehicle is a motorcycle.

  According to a third aspect of the present invention, in the antitheft device according to the first or second aspect, the control means is connected to an alarm sound selection means comprising predetermined operation means for operating the vehicle, and the alarm sound The alarm sound can be selected by an operator operating the selection means.

  According to a fourth aspect of the present invention, in the antitheft device according to any one of the first to third aspects, the control means can output an alarm sound arbitrarily selected by the operator at an arbitrary volume. It is characterized by that.

  According to a fifth aspect of the present invention, in the antitheft device according to the fourth aspect, the control means is connected to a volume selection means comprising operation means for operating the vehicle, and the operator operates the volume selection means. Thus, the volume of the alarm sound can be selected.

  According to the first aspect of the present invention, since the control means that can output the alarm sound arbitrarily selected by the operator by the output means is provided, the user can select the alarm sound according to his / her preference etc. It is possible to easily determine whether or not the alarm sound is output from the own vehicle.

  According to the invention of claim 2, since the vehicle is a motorcycle, the motorcycle can be reliably prevented from being stolen.

  According to the invention of claim 3, the control means is connected to an alarm sound selection means comprising predetermined operation means for operating the vehicle, and an alarm sound is selected by the operator operating the alarm sound selection means. Since it was made possible, a separate new means for selecting the alarm sound of the anti-theft device can be dispensed with.

  According to the invention of claim 4, since the control means can output the alarm sound arbitrarily selected by the operator at an arbitrary volume, it is possible to output the alarm sound at a volume according to the parking environment of the vehicle. it can.

  According to the fifth aspect of the present invention, the control means is connected to the volume selection means comprising operation means for operating the vehicle, and the operator can select the volume of the alarm sound by operating the volume selection means. Thus, the alarm sound can be output at a volume corresponding to the parking environment of the vehicle, and a separate new means for selecting the alarm sound volume of the anti-theft device can be eliminated.

The block diagram which shows the outline | summary of the antitheft device which concerns on embodiment of this invention. The flowchart which shows the control content by the control means of the antitheft device The flowchart which shows the control content by the control means of the antitheft device The flowchart which shows the control content by the control means of the antitheft device Drive waveform indicating the volume (maximum volume) of the alarm sound selected by the anti-theft device Drive waveform indicating the volume (high volume) of the alarm sound selected by the anti-theft device Drive waveform indicating the volume (in volume) of the alarm sound selected by the anti-theft device Driving waveform indicating the volume (low volume) of the alarm sound selected by the anti-theft device Frequency waveform showing alarm sound (alarm sound 1) selected by the anti-theft device Frequency waveform showing alarm sound (alarm sound 2) selected by the anti-theft device Frequency waveform showing alarm sound (alarm 3) selected by the anti-theft device Frequency waveform showing alarm sound (alarm sound 4) selected by the anti-theft device Frequency waveform showing alarm sound (alarm sound 5) selected by the anti-theft device

Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.
The anti-theft device according to this embodiment is attached to a predetermined part of a motorcycle to prevent the vehicle from being stolen. As shown in FIG. 1, an acceleration sensor 2 as a detecting means and a control means 5 are provided. And a CPU 3 (microcomputer) in which a storage means 6 is formed, an output means 4 having a piezoelectric ceramic 4c, and a booster circuit 7. The motorcycle applied to the present embodiment operates based on the operation of a battery BT as a power source, an ignition switch IG (alarm sound selection means) for starting the engine, and a brake lever or foot brake. A brake switch BS (volume selection means) is provided. In the figure, symbol BR indicates a brake lamp that is turned on when the brake switch BS is turned on.

  The acceleration sensor 2 includes a sensor that can detect a change in the tilt angle of a vehicle, movement, or vibration applied to the vehicle, and in this embodiment, three axes that can measure acceleration in three directions of the XYZ axes with one device. An acceleration sensor (for example, a piezoresistive triaxial acceleration sensor, a capacitance triaxial acceleration sensor, a heat detection triaxial acceleration sensor, or the like) is used. That is, by attaching the anti-theft device 1 having the acceleration sensor 2 to the vehicle, when the vehicle is parked, the acceleration sensor 2 can detect a change in the inclination angle of the vehicle, start of movement, or application of vibration. It has been done.

  The output means 4 is electrically connected to the CPU 3 and outputs a predetermined alarm sound based on detection by the acceleration sensor 2 (that is, an alarm transmission source). The output means 4 is a drive circuit 4a, 4b, and a piezoelectric ceramic. 4c. The output means 4 according to the present embodiment is capable of outputting an alarm sound created by software of the CPU 3 to the outside. The alarm sound is based on a sweep of the oscillation frequency, and has a sweep start frequency and an end frequency. It is generated by a combination, swap of two frequency sources, a combination of sweep times, or a reference to a frequency data table.

  The output means 4 is boosted to 24V by the booster circuit 7, and the drive circuits 4a and 4b are configured to face the push-pull circuit of the transistor and drive each with a different CPU port. The H pulse width of the drive waveform can be changed according to the selected volume. As a result, the voltage applied to the piezoelectric ceramic 4c can be controlled to 48V or 24V, and the frequency-sound pressure characteristic of the piezoelectric ceramic 4c is used to change the H pulse width of the drive waveform. The volume can be adjusted.

  Here, the CPU 3 of the anti-theft device 1 according to the present embodiment includes a control means 5 that can output an alarm sound arbitrarily selected by the operator by the output means 4, and an alarm sound arbitrarily selected by the operator. And storage means 6 for storing. The control means 5 according to the present embodiment is connected to alarm sound selection means (in this embodiment, an ignition switch IG) comprising predetermined operation means for operating the vehicle, and the operator operates the alarm sound selection means. By doing so, the alarm sound can be selected. Note that the alarm sound selection means is not limited to the one composed of the ignition switch IG, and may be replaced with other operation means for operating the vehicle.

  Further, the control means 5 according to the present embodiment is connected to volume selection means comprising operation means for operating the vehicle (the brake switch BS in this embodiment), and the operator operates the volume selection means. The sound volume of the warning sound can be selected by. Note that the volume selection means is not limited to the one composed of the brake switch BS, and may be replaced with other operation means for operating the vehicle. Moreover, you may make it utilize the same operation means for operating a vehicle as a warning sound selection means and a volume selection means.

  That is, the anti-theft device 1 according to the present embodiment is arbitrarily selected by the operator by using operation means (operation means for operating the vehicle engine starting, running, braking, etc.) provided in the vehicle. The alarm sound can be output at an arbitrary volume. The storage unit 6 includes a nonvolatile memory inside the CPU 3, and is configured to store the alarm sound and the volume selected by the alarm sound selection unit and the volume selection unit.

Next, the control content of the antitheft device 1 according to the present embodiment will be described.
First, the state of the ignition switch IG is determined (S1). When the ignition switch IG is off, the state of the brake switch BS is determined at S2, and when the brake switch BS is off, the ignition switch is again at S3. The state of IG is determined. If it is determined in S3 that the ignition switch IG is off, it is determined in S4 whether or not the standby time has elapsed. If the standby time has elapsed, whether or not the setting is canceled in S5. To be judged. If it is determined in S5 that the setting has not been released, whether or not the acceleration sensor 2 has detected a change in the tilt angle of the vehicle, a movement, or vibration applied to the vehicle (that is, detection that is presumed to be theft) (S6) and if there is such detection, the alarm sound stored in the storage means 6 is output by the output means in S7.

  On the other hand, if it is determined in S3 that the ignition switch IG is on, the state of the brake switch BS is determined in S8, and if the brake switch BS is off, whether or not the ignition switch IG is turned on in S9. Is judged. If it is determined in S9 that the ignition switch IG is turned on, it is determined whether or not 2 seconds (predetermined time) has elapsed, and when 2 seconds have elapsed, the process returns to the start (control start). If it is determined in S9 that the ignition switch IG is off, the standby time is changed in S11, and then the process returns to S3.

  That is, if the ignition switch IG is turned off without operating the brake switch BS, after the waiting time has elapsed, the determination of whether or not the acceleration sensor 2 has detected is started, the antitheft device 1 is set, and the brake switch BS is operated. If the ignition switch IG is turned off, the antitheft device 1 is not set. If the ignition switch IG is turned off without operating the brake switch BS, the standby state (S3, S4) is entered. However, if the ignition switch IG is turned on again within 2 seconds before the standby time elapses. The waiting time is changed (S11).

  Further, when it is determined at S2 that the brake switch BS is turned on, as shown in FIG. 3, the state of the ignition switch IG is determined at S12, and when the ignition switch IG is off, at S13. It is determined whether 2 seconds (predetermined time) has elapsed. When 2 seconds have elapsed, the state of the ignition switch IG is determined in S14, and when it is determined that the ignition switch IG is turned on, the process returns to the start.

  If it is determined in S12 that the ignition switch IG is on, the state of the ignition switch IG is determined again in S15. If the ignition switch IG is on, whether or not 2 seconds have passed in S16. Is determined, and when 2 seconds have elapsed, the process returns to the start. On the other hand, if it is determined in S15 that the ignition switch IG is off, it is determined in S17 whether or not the number of operations of the ignition switch IG is greater than twice. Is changed.

  That is, after the brake switch BS is actuated and the ignition switch IG is turned off, the alarm sound is sequentially switched and output by repeating the on / off operation by turning it on within 2 seconds and then turning it off within 2 seconds (for confirmation) The alarm sound that can be selected at a small volume is sequentially output), and any alarm sound can be selected. For example, there are five types of alarm sounds that can be selected (alarm sounds 1 to 5) shown in FIGS. 9 to 13, and these alarm sounds are selected by repeatedly operating the ignition switch IG. Specifically, the alarm sound 1 in FIG. 9 is swept down, the alarm sound 2 in FIG. 10 is swept up / down, the alarm sound 3 in FIG. 11 is swept down, and the frequencies of the two systems to be swept up are switched in a time-sharing manner. 12, alarm sound 4 in FIG. 12 is obtained by adding an offset frequency in a time division manner to sweep up / down, and alarm sound 5 in FIG. 13 is an alarm sound in which a randomly generated frequency is generated in a time division manner.

  Further, when it is determined in S8 that the brake switch BS is on, as shown in FIG. 4, the state of the brake switch BS is determined in S19. If it is on, the ignition switch IG is switched on in S20. The state is determined. When the ignition switch IG is off, the process proceeds to S12 shown in FIG. 3, and when the ignition switch IG is on, it is determined whether or not 2 seconds have passed in S21.

  On the other hand, if it is determined in S19 that the brake switch BS is off, it is determined in S22 whether or not the number of operations of the brake switch BS is greater than two, and the number of operations of the brake switch BS is greater than two. In this case, after the volume of the alarm sound is changed in S23, the process proceeds to S24, and when the number of operations of the brake switch BS is two or less, S23 is skipped and the process proceeds to S24. Then, in S24, the state of the brake switch BS is determined. If the brake switch BS is off, the state of the ignition switch IG is determined in S25. If it is determined in S25 that the ignition switch IG is on, it is determined whether or not 2 seconds have passed in S26, and S24 and S25 are repeated until 2 seconds have passed. It will be. If it is determined in S25 that the ignition switch IG is off, the process returns to S3 in FIG. 2, and a series of subsequent controls are performed.

  In other words, if the ignition switch IG is turned off without operating the brake switch BS, it enters a standby state. However, after the ignition switch IG is turned on again, the brake switch BS is turned on within 2 seconds and then turned off within 2 seconds. By repeating the on / off operation as described above, the volume of the alarm sound is sequentially switched and output (the alarm sound selected at the selected volume is output in a short time), and any volume can be selected. . For example, the volume of the alarm sound can be arbitrarily selected from a maximum volume (FIG. 5), a large volume (FIG. 6), a medium volume (FIG. 7), and a small volume (FIG. 8). Specifically, the waveform of the maximum sound volume (FIG. 5) is such that the pulse width is set to the maximum sound pressure of the piezoelectric ceramic 4c and the amplitude is set to 48V while being half of the period of 3 kHz. is there. The waveform of the loud volume (FIG. 6) has the same pulse width as that of the maximum volume (FIG. 5), the amplitude is 24V, and the waveform of the medium volume (FIG. 7) has a duty of 50%. The amplitude is set to 24V, and the waveform of the small volume (FIG. 8) is set to 24V while the pulse width is set to 83 μsec or less.

  According to the above embodiment, since the control unit 5 that can output the alarm sound arbitrarily selected by the operator by the output unit 4 is provided, the user can select the alarm sound according to his / her preference or the like. It is possible to easily determine whether or not the alarm sound is output from the own vehicle. In particular, since the vehicle applied to the present embodiment is a motorcycle, it is possible to reliably prevent the motorcycle from being stolen.

  Further, the control means 5 according to the present embodiment is connected to alarm sound selection means comprising predetermined operation means (ignition switch IG) for operating the vehicle, and the operator operates the alarm sound selection means. Since the alarm sound can be selected, a separate new means for selecting the alarm sound of the anti-theft device 1 can be dispensed with.

  Furthermore, since the control means 5 which concerns on this embodiment can output the alarm sound arbitrarily selected by the operator at arbitrary volumes, it can output the alarm sound with the volume according to the parking environment of the vehicle. . Still further, the control means 5 according to the present embodiment is connected to volume selection means comprising operation means (brake switch BS) for operating the vehicle, and an alarm sound is generated when the operator operates the volume selection means. Since the volume can be selected, the alarm sound can be output at a volume according to the parking environment of the vehicle, and a separate new means for selecting the volume of the alarm sound of the anti-theft device 1 is not required. can do.

  Although the present embodiment has been described above, the present invention is not limited to this. For example, an alarm sound selection means for selecting an alarm sound or a volume of the alarm sound by an operator, and a volume selection means for the antitheft device 1. May be a dedicated operation means (that is, a dedicated means different from the operation means for operating the vehicle). Moreover, in this embodiment, although it shall be attached to a motorcycle, it is good also as what is attached to vehicles (for example, motor vehicles etc.) other than a motorcycle. Further, in the present embodiment, the acceleration sensor 2 is used as the detection means. However, any other means can be used as long as it can detect a change in the tilt angle of the vehicle, a movement, or vibration applied to the vehicle. May be. In the present embodiment, both the alarm sound and the alarm sound can be selected, but the operator may select only the alarm sound.

  As long as the anti-theft device is equipped with a control means that can output an alarm sound arbitrarily selected by the operator using the output means, it is also applicable to a device with a different external shape or with other functions added. Can do.

1 anti-theft device 2 acceleration sensor (detection means)
3 CPU
4 Output means 5 Control means 6 Storage means 7 Booster circuit IG Ignition switch (Alarm sound selection means)
BS brake switch (volume selection means)

Claims (5)

Detecting means capable of detecting a change in the tilt angle of the vehicle, a movement start, or vibration applied to the vehicle;
Output means for outputting a predetermined alarm sound based on detection by the detection means;
In the anti-theft device equipped with
An anti-theft device comprising a control means capable of causing the output means to output an alarm sound arbitrarily selected by an operator.   2. The antitheft device according to claim 1, wherein the vehicle is a motorcycle.   The control means is connected to alarm sound selection means comprising predetermined operation means for operating the vehicle, and the alarm sound can be selected by an operator operating the alarm sound selection means. The antitheft device according to claim 1 or 2.   The antitheft device according to any one of claims 1 to 3, wherein the control means can output an alarm sound arbitrarily selected by an operator at an arbitrary volume.   The control means is connected to volume selection means comprising operation means for operating a vehicle, and the volume of the alarm sound can be selected by an operator operating the volume selection means. The antitheft device according to claim 4.

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