WO2005080154A1

WO2005080154A1 - Antitheft device of vehicle

Info

Publication number: WO2005080154A1
Application number: PCT/JP2004/018696
Authority: WO
Inventors: Manabu Suzuki
Original assignee: Manabu Suzuki
Priority date: 2004-02-24
Filing date: 2004-12-15
Publication date: 2005-09-01
Also published as: JP2005271904A

Abstract

[PROBLEMS] To provide an antitheft device of vehicle in which a decision can be made easily whether a warning condition is set or not, generation of an unintentional alarm and malfunction of an engine can be prevented, and a selection of setting a warning condition can be set easily in accordance with the taste of a driver. [MEANS FOR SOLVING PROBLEMS] The antitheft device of vehicle includes at least one of an alarm means and an immobilizer means and is characterized in that the alarm means or the immobilizer means is set to bring about the warning condition when the ignition switch of a vehicle is turned off under the condition that a dimmer switch is at high position state or low position state.

Description

Specification

Vehicle anti-theft device

Technical field

The present invention relates to a vehicle theft prevention device for a four-wheeled vehicle, a two-wheeled vehicle, and the like.

Background art

[0002] A conventional vehicle anti-theft device sets the anti-theft device by turning off an identification switch of the vehicle. However, in some cases, such as when refueling, it is not desirable to set anti-theft protection.Therefore, when turning off the ignition switch, if the operation is performed to any position other than the OFF position using the ignition switch key, Some devices do not set anti-theft. In some cases, theft protection is released when the ignition switch is turned on and the ignition switch is operated to a position other than the ON position using the ignition switch. (See Patent Document 1). Patent Document 1: Japanese Patent Application Laid-Open No. 2000-211564

Disclosure of the invention

Problems to be solved by the invention

[0003] However, in the conventional vehicle anti-theft device, in order to prevent the alarm switch from turning off when the ignition switch is turned off in the case of refueling or the like, it is necessary to turn off the ignition switch by using the key of the ignition switch. It is necessary to perform an operation to a position other than the position, and the operation is complicated. In addition, since the operation is complicated, the driver may forget the operation method itself and set it when he / she does not want to set the anti-theft protection, and may inadvertently generate an alarm sound.

The present invention has been made in view of such circumstances, and it is possible to easily determine whether or not to be in the alert state, to prevent the occurrence of an inadvertent alarm and the unstart of the engine, and Another object of the present invention is to provide a vehicle anti-theft device that can easily set whether or not to be in an alert state according to a driver's preference or the like.

Means for solving the problem

[0005] The vehicle antitheft device according to claim 1 has at least one of an alarm unit and an immobilizer unit, and the dimmer switch is in either a high position state or a low position state. In this state, when the identification switch of the vehicle is turned off, at least one of the alarm means and the immobilizer means is set to be in a warning state.

[0006] The vehicle antitheft device according to claim 2 is characterized in that it is possible to arbitrarily set whether the alarm means and the immobilizer means are set in any state of the dimmer switch.

[0007] The vehicle antitheft device according to claim 3 has at least one of an alarm unit and an immobilizer unit, and turns off the ignition switch of the vehicle when the headlight is turned on or off. At this time, at least one of the alarm means and the immobilizer means is set to be in an alert state.

[0008] The vehicle antitheft device according to claim 4 is characterized in that it is possible to arbitrarily set whether or not the alarm unit and the immobilizer unit are set in any state of the headlight.

[0009] The vehicle antitheft device according to claim 5 has at least one of an alarm unit and an immobilizer unit, and is provided by a combination of a high position state and a low position state of the dimmer switch, and a lighting state and a turning off state of the headlight. When the identification switch of the vehicle is turned off, at least one of the alarm means and the immobilizer means is set to be in an alert state.

[0010] The vehicle antitheft device according to claim 6 is characterized in that it is possible to arbitrarily set whether or not the alarm means and the immobilizer means are set in any combination of the states of the dimmer switch and the headlight.

[0011] A vehicle theft prevention device according to claim 7 is characterized in that when a warning means or an immobilizer means is set, a set confirmation sound is generated.

[0012] The vehicle antitheft device according to claim 8 comprises a hazard lamp blinking means for blinking a hazard lamp during a warning operation of the warning means, and a hazard lamp blinking switch, wherein the warning means is not set. The flashing of the hazard lamp can be started by the hazard lamp flashing switch.

[0013] The vehicle anti-theft device according to claim 9 wherein the alarm means is a piezoelectric buzzer and has an oscillation means for controlling the vehicle anti-theft device and generating a signal for the piezoelectric buzzer. It is characterized by comprising a control unit and a piezoelectric buzzer driving unit that drives a piezoelectric buzzer in response to a signal from the oscillating means, and the control unit, the piezoelectric buzzer driving unit, and the piezoelectric buzzer are provided integrally.

The invention's effect

[0014] According to the invention of claim 1, it is possible to easily determine whether to be in the alert state only by selecting the high position state or the low position state of the dimmer switch. In addition, since the selection is easy, it is possible to prevent inadvertent alarms and unstarting of the engine, which makes it difficult to forget the selection method.

[0015] According to the invention of claim 2, since it is possible to arbitrarily set whether the alarm means and the immobilizer means are set in any state of the dimmer switch, the selection according to the driver's preference and the like can be made. Can be easily set.

[0016] According to the invention of claim 3, it is possible to easily determine whether or not to be in the alert state only by selecting the on / off state of the headlight or the state of deviation. In addition, since the selection is easy, it is possible to prevent the occurrence of an inadvertent alarm and an unstart of the engine, which makes it difficult to forget the selection method.

[0017] According to the invention of claim 4, it is possible to arbitrarily set whether or not the alarm means and the immobilizer means are set in any state of the headlight. Can be easily set.

[0018] According to the invention of claim 5, it is easy to determine whether or not to be in the alert state only by selecting a combination of the high position state and the low position state of the dim switch, and the lighting state and the lighting state of the headlight. be able to. Also, since the selection is easy, it is possible to prevent inadvertent alarms and unstarting of the engine, which makes it difficult to forget the selection method.

According to the invention of claim 6, it is possible to arbitrarily set whether or not the alarm means and the immobilizer means are set in any combination of the dimmer switch and the headlight. In addition, it is possible to easily set the selection according to the driver's preference and the like.

[0020] According to the invention of claim 7, when the alarm means or the immobilizer means is set, a set confirmation sound is generated, so that it is possible to easily know whether or not the user has been alerted.

[0021] According to the invention of claim 8, the hazard lamp is set when the alarm means is set, and the hazard lamp is set. Since the blinking switch can start blinking the hazard lamp, the hazard lamp lighting function can be easily added to a vehicle that does not have the hazard lamp lighting function.

[0022] According to the invention of claim 9, the control unit, the piezoelectric buzzer driving unit, and the piezoelectric buzzer are integrally provided, and the control unit includes the oscillating means. The desired timbre of the piezoelectric buzzer can be changed as appropriate. The sound pressure level of the piezoelectric buzzer can be adjusted by using the frequency characteristic, which is the relationship between the frequency of the piezoelectric buzzer and the sound pressure level.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings. The vehicle antitheft device in the form of the present invention is for preventing theft of a four-wheeled vehicle, a two-wheeled vehicle, etc., and has means for detecting and reporting a stolen situation.

Example 1

FIG. 1 is a configuration diagram showing a connection example of a vehicle anti-theft device according to the present invention, and FIG. 2 is a configuration diagram showing a detailed configuration of the vehicle anti-theft device. FIG. 3 is a flowchart showing the operation of the vehicle antitheft device.

[0025] In the figure, the vehicle antitheft device 1 includes an antitheft control circuit 5 and relays 6-8. In addition, the vehicle antitheft device 1 is connected to an identification switch 10, a dimmer switch 15, a headlight 16, a sensor 17, an ECU 11, a win L25, a win R26, an alarm 20, and an indicator 21. The identification switch 10 is a main switch of the vehicle, and the engine can be started by inserting a key and rotating the key. ECU 11 is an electronic control that controls the engine. The ignition switch 10 has a wiring for turning on / off the power supply to the ECU 11. Further, between the induction switch 10 and the ECU 11, the relay 6 is turned on / off by the contact of the relay 6. That is, when the relay 6 is not turned on, power is not supplied to the ECU 11 and the engine cannot be started, thus serving as immobilizer means. In addition, the state of the ON / OFF state of the ignition switch 10 is taken into the anti-theft control circuit 5. [0026] The win force L25 and the win force R26 are ramps for the win force that are normally used for vehicles, and are OR-connected to a configuration (not shown) that is turned on / off by a switch for the win force, so that the vehicle is stolen. It can also be turned on by control from the prevention device 1. Turn on relay 7 to turn on win force L25, and turn on relay 8 to turn on win force R26. The dimmer switch 15 is a switch for setting a high or low position of the headlight 16, and captures which position is set. The headlight 16 is a headlight and captures whether the light is off or on.

The anti-theft control circuit 5 includes a microcomputer (CPU) and an input / output circuit for the microcomputer, and controls the entire vehicle anti-theft device 1 by a program. The configuration is not limited to a microcomputer, but may be a configuration in which control is performed by a sequencer, a logic circuit, or the like. Further, the alarm 20 issues an alarm by a sound such as a buzzer. The indicator 21 indicates the operation state of the vehicle antitheft device 1 and is a lighting device such as an LED or a lamp. The sensor 17 is a sensor, such as an acceleration sensor or a gravity sensor, that detects vibration, inclination, and the like of the vehicle, and detects a state in which the vehicle has moved carelessly. The indicator 21 is installed at a position that is easy for the driver of the vehicle to see. The mounting position of the vehicle antitheft device 1 is not particularly limited, but is preferably a position where it cannot be easily removed from the outside of the vehicle.

[0028] In the configurations of Figs. 1 and 2, both the immobilizer means for taking the identi- fication switch 10 into the relay 6 are provided, but at least one of the vehicle antitheft devices may be provided. Further, the configuration is such that the respective states of the dimmer switch 15 and the headlight 16 can be captured, but it is sufficient if at least one of the vehicle anti-theft devices is provided. Furthermore, it is not always necessary to provide the function of lighting the win power L25 and the win power R26.

Next, the operation of the vehicle antitheft device 1 in the present embodiment will be described. In the following description of the present embodiment, reference numerals in parentheses correspond to reference numerals in the flowchart of FIG.

In the following description, the case where the anti-theft protection is set when the dimmer switch 15 is in the low position will be described (1 in Table 1). Table 1 shows the combinations of settings depending on the position of the dimmer switch 15. Details of Table 1 will be described later. [0031] [Table 1]

[0032] First, the state of the identification switch 10 is monitored (S101). When the identification switch 10 is turned off, specific control is performed (S101_OFF). When the identification switch 10 is turned off, the position of the dimmer switch 15 is confirmed (S102). When the dimming switch 15 is in the high position, the anti-theft warning state is not set, and the engine is only stopped as the operation of the ignition switch 10 (S102-high).

When the dimmer switch 15 is in the low position (S102-low), theft prevention is set (S103). As the specific contents of the anti-theft set, first, a set confirmation sound is sounded to indicate that the anti-theft is set. The set confirmation sound is generated using the alarm 20. Also, the relay 6 is turned off and the immobilizer means is operated so that the engine cannot be started. Next, the indicator 21 is blinked to indicate that the vehicle is on the alert for theft (S104). In this state, the driver will leave the vehicle.

When the key is inserted into the identification switch 10 and becomes 〇N (S105— 警 N) in the state of being alert for theft, the antitheft is released (S108). Specifically, the indicator 21 is turned off and the relay 6 is turned on to stop the immobilizer means.

In the theft alert state, the anti-theft control circuit 5 monitors the operation of the sensor 17 (S 106). Then, when the sensor 17 reacts and detects a state in which the vehicle is inadvertently vibrated or moved in the alert state of theft (S106—Yes), an alarm is issued (S107). As the specific contents of the alarm, first, the alarm 20 emits an alarm sound. Also, the win power L25 and the win power R26 can be blinked.

[0036] As described above, when the vehicle is turned off when the identification switch 10 of the vehicle is turned off while the dimmer switch 15 is in the low position, the vehicle is alerted. By simply selecting the state or the low position state, it is possible to easily determine whether or not to be alert. In addition, since the selection is easy, it is possible to prevent the occurrence of inadvertent alarms and unstarting of the engine, which makes it difficult to forget the selection method. In other words, if you do not want to set the alarm switch to OFF when the ignition switch is turned off, such as when refueling or moving away from the vehicle within easy reach of the vehicle, simply leave the ignition switch 15 in the high position state. It is easy to select and can prevent inadvertent alarms and engine start-ups.

In the above description, the case where the alarm means and the immobilizer means are set when the dimmer switch 15 shown in 1 of Table 1 is in the low position has been described. However, as shown in 2 of Table 1, the dimmer switch 15 is set. The warning means and the immobilizer means may be set when is in the high position. In addition, as shown in Table 1 (3), it is also possible to set only the alarm means when the dimmer switch 15 is in the low position, and as shown in Table 1 (4), it is possible to set the alarm means in the high position. Only the setting may be made. It is also possible to set only the immobilizer means when the dimming switch 15 is in the low position as shown in 5 of Table 1 and to set the immobilizer means when it is in the high position as shown in 6 of Table 1. May be set. In this way, not only the combination of Table 1 but also when the ignition switch 10 of the vehicle is turned off with the dimmer switch 15 in the high position state or the low position state or in the misaligned state, the alarm means and the immobilizer means are switched off. At least one of them can be set to be on alert. In either case, it is possible to easily determine whether or not to be alert, and because the selection is easy, it is possible to prevent the occurrence of inadvertent warnings and unstarting of the engine that make it difficult to forget the selection method.

[0038] It should be noted that the setting in Table 1 for operating the vehicle anti-theft device 1 may be fixedly determined by the anti-theft control circuit 5, but a switch is provided in the anti-theft control circuit 5 and It may be possible to arbitrarily select which setting to operate. By allowing one vehicle anti-theft device 1 to arbitrarily set, selection can be easily set according to the driver's preference, destination of the vehicle, vehicle type, vehicle cost, and the like. Then, since one type of vehicle anti-theft device 1 can respond to each setting, it is possible to reduce the cost that does not require preparing a plurality of types of vehicle anti-theft device 1.

[0039] In addition, since the set confirmation sound is generated when the device becomes alert, the device becomes alert. It is possible to easily know whether or not it is possible. Further, a hazard lamp blinking switch can be provided in the vehicle antitheft device 1 so that the hazard lamp blinking switch can be started by the hazard lamp blinking switch in a state where the alarm means is not set. By providing the flashing function of the hazard lamp in the vehicle antitheft device 1, the hazard lamp lighting function can be easily added to a vehicle that does not have the hazard lamp lighting function.

Example 2

FIG. 4 is a flowchart showing the operation of the vehicle anti-theft device according to the second embodiment of the present invention.

The vehicle anti-theft device of the present embodiment is the same as the vehicle anti-theft device 1 shown in FIGS. 1 and 2, and is composed of an anti-theft control circuit 5 and relays 6-8. In addition, the vehicle antitheft device 1 is connected to an ignition switch 10, a dimmer switch 15, a headlight 16, a sensor 17, an ECU 11, a win power L25, a win power R26, an alarm 20, and an indicator 21. The details of each component are the same as those in the first embodiment, and a description thereof will be omitted. Note that the configurations of FIGS. 1 and 2 include both the immobilizer means for taking the identification switch 10 into the relay 6, but it is sufficient that at least one of the vehicle antitheft devices is provided. Further, the vehicle anti-theft device having a configuration capable of capturing the respective states of the dimmer switch 15 and the headlight 16 may be provided with at least one of them. Furthermore, it is not always necessary to provide the lighting function of the win power L25 and the win power R26.

In the following description, a case where the anti-theft protection is set when the headlight 16 is turned on will be described (1 in Table 2). Table 2 shows the combinations of settings depending on the state of the headlights 16. Details of Table 2 will be described later.

[Table 2] Headlight

turn on turn off

1 Alarm + Immobili set ―

2 Alarm + Immobili-Set

3 Alarm set ―

4 Alarm-Set

5 Immobili Set ―

6 Imobi-Set

First, the state of the identification switch 10 is monitored (S201), and when the identification switch 10 is turned off, specific control is performed (S201_OFF). When the identification switch 10 is turned off, the lighting state of the headlight 16 is checked (S202). When the headlight 16 is off, the anti-theft warning state is not set, and the engine is only stopped as an operation of the identification switch 10 (S202—off).

When the headlights 16 are lit (S202—lit), theft prevention is set (S203).

As the specific contents of the anti-theft set, first, a set confirmation sound is sounded to indicate that the anti-theft is set. The set confirmation sound is generated using the alarm 20. Also, the relay 6 is turned off and the immobilizer means is operated so that the engine cannot be started. Next, the indicator 21 is blinked to indicate that the vehicle is on the alert for theft (S204). In this state, the driver will leave the vehicle.

When the key is inserted into the identification switch 10 and becomes 〇N (S205—〇N) in the state of being alert for theft, the theft prevention is released (S208). Specifically, the indicator 21 is turned off and the relay 6 is turned on to stop the immobilizer means.

[0048] In a theft alert state, the anti-theft control circuit 5 monitors the operation of the sensor 17 (S206). Then, when the sensor 17 reacts and detects a state in which the vehicle is inadvertently vibrated or moved in the alert state of theft (S206—Yes), an alarm is issued (S207). As the specific contents of the alarm, first, the alarm 20 emits an alarm sound. Also, the win power L25 and the win power R26 can be blinked.

[0049] As described above, when the identification switch 10 of the vehicle is turned off while the headlight 16 is on, the vehicle is in the alert state. Therefore, only by selecting the on or off state of the headlight 16, It can be easily determined whether or not to be in the alert state. Easy selection Therefore, it is possible to prevent the occurrence of an inadvertent alarm and an unsuccessful start of the engine, which makes it difficult to forget the selection method. In other words, if you do not want to turn on the alarm switch when turning off the ignition switch, such as when refueling or moving away from the vehicle within sight of the vehicle, simply select the headlight 16 and turn it off to make the selection easier. In this way, it is possible to prevent an inadvertent generation of an alarm or an unstart of the engine.

[0050] In the above description, the case where the alarm means and the immobilizer means are set when the headlight 16 shown in 1 of Table 2 is turned on has been described. When the light is turned off, the alarm means and the immobilizer means may be set. In addition, as shown in Table 2-3, it is possible to set only the alarm means when the headlight 16 is on, and as shown in Table 2-4, only the alarm means is set when the headlight 16 is off. It may be done. Also, as shown in 5 of Table 2, only the immobilizer means can be set when the headlight 16 is turned on, and as shown in 6 of Table 2, only the immobilizer means can be set when the headlight 16 is turned off. It may be set. As described above, not only the combination of Table 2 but also when at least one of the alarm means and the immobilizer means is turned off when the vehicle's identification switch 10 is turned off while the headlight 16 is turned on or off. Can be set to be on alert. In either case, it is possible to easily determine whether or not to be in the alert state, and since the selection is easy, it is possible to prevent the occurrence of an unnecessary alarm or forgetting to start the engine that makes it difficult to forget the selection method.

[0051] It should be noted that which setting in Table 2 should be used to operate the vehicle anti-theft device 1 may be fixedly determined by the anti-theft control circuit 5, but a switch is provided in the anti-theft control circuit 5 and It may be possible to arbitrarily select which setting to operate. By allowing one vehicle anti-theft device 1 to arbitrarily set, selection can be easily set according to the driver's preference, destination of the vehicle, vehicle type, vehicle cost, and the like. Then, since one type of vehicle anti-theft device 1 can respond to each setting, it is possible to reduce the cost that does not require preparing a plurality of types of vehicle anti-theft device 1.

[0052] In addition, since the set confirmation sound is generated when the alert state is entered, it is possible to easily know whether or not the alert state has been entered. Further, a hazard lamp blinking switch can be provided in the vehicle antitheft device 1 so that the hazard lamp blinking switch can be started by the hazard lamp blinking switch in a state where the alarm means is not set. Hazard lamp By providing the blinking function in the vehicle antitheft device 1, a hazard lamp lighting function can be easily added to a vehicle that does not have a hazard lamp lighting function.

Example 3

FIG. 5 is a flowchart showing the operation of the third embodiment of the vehicle antitheft device according to the present invention.

In the following description, a case will be described where the anti-theft protection is set with the dimmer switch 15 in the low position and the headlight 16 turned on (Table 3).

[0057] [Table 3]

First, the state of the identification switch 10 is monitored (S301). When the identification switch 10 is turned off, specific control is performed (S301_OFF). When the identification switch 10 is turned off, the position of the dimmer switch 15 is confirmed (S302). When the dimming switch 15 is in the high position, the state of the headlamp 16 is checked (S310). . When the headlight 16 is turned off (4 in Table 3), the anti-theft warning state is not set, and the engine is only stopped as the operation of the ignition switch 10 (S310-turned off).

If the dimmer switch 15 is in the low position (S302-low), theft prevention is set (S303). As the specific contents of the anti-theft set, first, a set confirmation sound is sounded to indicate that the anti-theft is set. The set confirmation sound is generated using the alarm 20. When the headlight 16 is on, the relay 6 is turned off and the immobilizer means is operated so that the engine cannot be started. When the headlight 16 is off, only the alarm means is set. When the dimmer switch 15 is in the high position and the headlight 16 is lit (S310—lit), only the immobilizer means is set. Next, the indicator 21 is blinked to indicate that the vehicle is on the alert for theft (S304). In this state, the driver will leave the vehicle.

When the key is inserted into the identification switch 10 and becomes 〇N in the alert state of theft (S305—ON), the theft prevention is released (S308). As specific contents of the anti-theft release, the indicator 21 is turned off and the relay 6 is turned on to stop the immobilizer means (in the case of Tables 3-2 and 4, the immobilizer function is irrelevant).

[0061] In the theft alert state, the anti-theft control circuit 5 monitors the operation of the sensor 17 (S306). Then, when the sensor 17 reacts to detect a state in which the vehicle inadvertently vibrates or moves in a state of warning of theft (S306-Yes), an alarm is issued if the alarm means is set. (S307). As specific contents of the alarm, first, the alarm 20 emits an alarm sound. Also, the win power L25 and the win power R26 can be blinked.

[0062] As described above, by selecting the state of the dimmer switch 15 and the headlight 16, when the vehicle is turned off when the induction switch 10 is turned off, the dimmer switch 15 is in the high position state and the low position state. In addition, by simply selecting the combination of the lighting state and the light-off state of the headlight 16, it is possible to easily determine whether or not to be in the alert state. In addition, since the selection is easy, it is possible to prevent the engine from inadvertently generating an alarm that makes it difficult to forget the selection method, and to prevent the engine from being unstarted. That is, when it is not desired to set the alarm switch to OFF when the identification switch is turned off, for example, when refueling or moving away from the vehicle within sight of the vehicle, the high position state and low position state of the dimmer switch 15 and the headlight 16 Lighting By simply selecting the combination of the ON state and the OFF state, it is possible to easily select the combination and prevent inadvertent alarms and unstarting of the engine.

In the above description, the alarm means and the immobilizer means are set by the combinations of the states shown in Table 3, but they may be set by other combinations of the dimmer switch 15 and the headlights 16. ,. As described above, when the identification switch 10 of the vehicle is turned off by selecting a combination of the high position state and the low position state of the dimming switch 15 and the lighting state and the extinguishing state of the headlight 16 without being limited to the combination of Table 3. At least one of the alarm means and the immobilizer means can be set to be in the alert state. In either case, the user can easily determine whether to be in the alert state or not, and since the selection is easy, it is possible to prevent inadvertent alarms and engine start-ups that make it difficult to forget the selection method. .

[0064] As shown in Table 3, the setting for operating the vehicle anti-theft device 1 may be fixedly determined by the anti-theft control circuit 5, but a switch is provided in the anti-theft control circuit 5 to determine It may be possible to arbitrarily select whether to operate with such a setting. By making it possible to arbitrarily set one vehicle anti-theft device 1, it is possible to easily set the selection according to the driver's preference, destination of the vehicle, vehicle type, vehicle cost, and the like. Further, since one type of vehicle anti-theft device 1 can cope with each setting, it is possible to suppress the cost without having to prepare a plurality of types of vehicle anti-theft device 1.

[0065] Further, since the set confirmation sound is generated at the time of the alert state, it is possible to easily know whether or not the alert state has been reached. Further, a hazard lamp blinking switch can be provided in the vehicle antitheft device 1 so that the hazard lamp blinking switch can be started by the hazard lamp blinking switch in a state where the alarm means is not set. By providing the flashing function of the hazard lamp in the vehicle antitheft device 1, the hazard lamp lighting function can be easily added to a vehicle that does not have the hazard lamp lighting function.

Example 4

FIG. 6 is a flowchart showing the operation of the fourth embodiment of the vehicle antitheft device according to the present invention.

The vehicle anti-theft device of the present embodiment is the same as the vehicle anti-theft device 1 shown in FIGS. 1 and 2. And comprises a theft prevention control circuit 5 and relays 6-8. In addition, the vehicle antitheft device 1 is connected to an ignition switch 10, a dimmer switch 15, a headlight 16, a sensor 17, an ECU 11, a win power L25, a win power R26, an alarm 20, and an indicator 21. The details of each component are the same as those in the first embodiment, and a description thereof will be omitted. Note that the configurations of FIGS. 1 and 2 include both the immobilizer means for taking the identification switch 10 into the relay 6, but it is sufficient that at least one of the vehicle antitheft devices is provided. Further, the vehicle anti-theft device having a configuration capable of capturing the respective states of the dimmer switch 15 and the headlight 16 may be provided with at least one of them. Furthermore, it is not always necessary to provide the lighting function of the win power L25 and the win power R26.

Next, the operation of the vehicle antitheft device 1 according to the present embodiment will be described. In the following description of the present embodiment, reference numerals in parentheses correspond to reference numerals in the flowchart of FIG.

First, the state of the ignition switch 10 is monitored (S401), and when the ignition switch 10 is turned off, specific control is performed (S401_OFF). When the identification switch 10 is turned off, the position of the dimmer switch 15 is confirmed (S102). When the dimming switch 15 is in the high position, the anti-theft warning state is not performed, and the engine is only stopped as the operation of the ignition switch 10 (S402-high).

If the dimmer switch 15 is in the low position (S402—low), theft prevention is set (S403). As the specific contents of the anti-theft set, first, a set confirmation sound is sounded to indicate that the anti-theft is set. The set confirmation sound is generated using the alarm 20. Next, the indicator 21 is blinked to indicate that the vehicle is on the alert for theft (S404). In this state, the driver will leave the vehicle.

When the key is inserted into the identification switch 10 and becomes 〇N (S405—ON) in a state of being alert for theft, the relay 6 is turned off once so that the engine cannot be started so that the engine cannot be started. Is operated (S410). Then, when the dimmer switch 15 is switched from the low position to the high position (S411—high), the relay 6 is turned off, the immobilizer means is released so that the engine can be started (S412), and the theft prevention is released. (S108).

In the theft alert state, the anti-theft control circuit 5 monitors the operation of the sensor 17 (S 406). Then, when the sensor 17 reacts and detects a state in which the vehicle is inadvertently vibrated or moved in the alert state of theft (S406—Yes), an alarm is issued (S407). As the specific contents of the alarm, first, the alarm 20 emits an alarm sound. Also, the win power L25 and the win power R26 can be blinked.

As described above, when the alert state is released, a change in the state of the dimmer switch 15 or the headlight 16 can be monitored. By making it possible to release the alert state only when the conditions are met, theft can be more reliably prevented.

Next, a specific form of the alarm 20 which is an alarm unit common to the first embodiment and the fourth embodiment will be described. FIG. 7 shows details of the embodiment relating to the alarm 20. In FIG. 7, the alarm means includes a theft prevention control circuit 5, a piezoelectric buzzer 20a corresponding to the alarm device 20, and a piezoelectric buzzer drive circuit 9 for driving the piezoelectric buzzer 20a. The anti-theft control circuit 5 is a control unit that controls the entire vehicle anti-theft device 1 as described above. The anti-theft control circuit 5 includes oscillation means for outputting an oscillation signal controlled by hardware or software. For example, in terms of software, the I / O port of the CPU is repeatedly turned on and off by software, and an oscillation signal is generated and output at the repetition cycle. The piezoelectric buzzer driving circuit 9 superimposes a current on the oscillation signal from the anti-theft control circuit 5, and generates an oscillation signal having sufficient power to drive the piezoelectric buzzer 20a. The anti-theft control circuit 5, the piezoelectric buzzer drive circuit 9, and the piezoelectric buzzer 20a are integrally formed on the same substrate.

In a conventional vehicle anti-theft device, an oscillation circuit for generating an oscillation signal, a piezoelectric buzzer drive circuit and a piezoelectric buzzer are provided integrally, and the anti-theft control circuit and these are formed separately. Then, the anti-theft control circuit performs a control simply instructing the piezoelectric buzzer to be turned on or off. For this reason, it was not possible to change the transmission frequency of the piezoelectric buzzer or the sound pressure level from the anti-theft control circuit side.

However, according to the embodiment of the present invention, the anti-theft control circuit 5, the piezoelectric buzzer drive circuit 9 and the piezoelectric buzzer 20a are provided integrally, and the anti-theft control circuit 5 has an oscillation means. The oscillation frequency can be changed on the anti-theft control circuit 5 side, and the desired tone of the piezoelectric buzzer 20a can be changed appropriately. Also, the frequency and sound pressure level of the piezoelectric buzzer 20a The sound pressure level of the piezoelectric buzzer 20a can be adjusted by using the frequency characteristic that is related to the bell. Further, as shown in FIG. 7, when an oscillation signal of opposite phase is input to each of the two inputs of the piezoelectric buzzer 20a and used, the oscillation signal is applied to one input by the control of the anti-theft control circuit 5. By inputting no oscillation signal or inputting an oscillation signal having an arbitrary phase difference instead of the opposite phase, the sound pressure level can be adjusted.

Industrial applicability

[0077] As described above, the vehicle antitheft device of the present invention is a vehicle equipped with a dimmer switch and a headlight, and is generally applied to vehicles such as a buggy, a snowmobile, and a snowmobile in addition to a four-wheeled vehicle and a two-wheeled vehicle. can do.

Brief Description of Drawings

FIG. 1 is a configuration diagram showing a connection of a vehicle anti-theft device according to a first embodiment of the present invention.

FIG. 2 is a configuration diagram showing a detailed configuration of the vehicle anti-theft device.

FIG. 3 is a flowchart showing an operation of the vehicle anti-theft device.

FIG. 4 is a flowchart showing an operation of a second embodiment of the vehicle antitheft device according to the present invention.

FIG. 5 is a flowchart showing an operation of the third embodiment of the vehicle antitheft device according to the present invention.

FIG. 6 is a flowchart showing an operation of a fourth embodiment of the vehicle antitheft device according to the present invention.

FIG. 7 is a configuration diagram showing another embodiment of the vehicle anti-theft device according to the present invention.

Explanation of symbols

[0079] 1 ... Vehicle anti-theft device

5 ... Anti-theft control circuit

6—8… Relay

9 ... Piezoelectric buzzer drive circuit

10 Ignition switch

11----ECU ···· Headlights · ”Sensor

· Alarm a- • Piezoelectric buzzer · 'Indicator · Win force L · Win force R

Claims

The scope of the claims

[1] In a vehicle anti-theft device having at least one of an alarm unit that issues an alarm when theft is detected and an immobilizer unit that prevents the engine from starting when theft is detected, the dimmer switch is in either a high position state or a low position state. When the identification switch of the vehicle is turned off in the state, at least one of the alarm means and the immobilizer means is set to be in an alert state, whereby a vehicle anti-theft device is provided.

2. The vehicle anti-theft device according to claim 1, wherein whether or not the alarm unit and the immobilizer unit are set can be arbitrarily set in any state of the dimmer switch.

[3] In a vehicle anti-theft device having at least one of an alarm means for issuing an alarm when theft is detected and an immobilizer means for preventing the engine from starting when theft is detected, the headlight may be turned on or off, or the headlight may be off. When the identification switch of the vehicle is turned off in the state, at least one of the alarm means and the immobilizer means is set to be in an alert state, and the apparatus is in an alert state.

4. The vehicle antitheft device according to claim 3, wherein whether or not the alarm means and the immobilizer means are set can be arbitrarily set in any state of the headlight.

[5] In a vehicle anti-theft device having at least one of alarm means for issuing an alarm when theft is detected and immobilizer means for preventing the engine from starting when theft is detected, the high position state and the low position state of the dimmer switch and the headlight An anti-theft device for a vehicle, wherein when the identification switch of the vehicle is turned off by a combination of a light-on state and a light-off state, at least one of the alarm means and the immobilizer means is set to be in an alert state.

6. The vehicle according to claim 5, wherein it is possible to arbitrarily set whether or not the alarm unit and the immobilizer unit are set in any combination of the states of the dimmer switch and the headlight. Anti-theft device.

7. The vehicle theft prevention device according to claim 6, wherein a set confirmation sound is generated when the alarm unit or the immobilizer unit is set.

[8] A hazard lamp blinking means for causing the hazard lamp to blink while the alarm means is operating,

With a hazard lamp blinking switch,

8. The vehicle antitheft device according to claim 1, wherein the hazard lamp blinking switch can be started to blink when the warning means is not set.

[9] The alarm means is a piezoelectric buzzer,

A control unit having an oscillation unit that controls the vehicle anti-theft device and generates a signal for the piezoelectric buzzer;

The piezoelectric buzzer driving unit that receives the signal from the oscillating unit and drives the piezoelectric buzzer is provided, wherein the control unit, the piezoelectric buzzer driving unit, and the piezoelectric buzzer are provided integrally. Item 9. The vehicle antitheft device according to any one of Items 8.