JP2871411B2 - Vehicle anti-theft device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control means for switching between starting and stopping of a security system which performs an alarm operation in response to a detection signal of an unauthorized intruder based on a transmission signal from a portable transmitter. The present invention relates to a vehicle anti-theft device provided.

[0002]

2. Description of the Related Art In recent years, in automobiles as vehicles,
In some cases, door locking and unlocking operations are performed by remote control without using keys. That is, when a lock signal or an unlock signal is transmitted using a remote key as a portable transmitter, the lock signal or the unlock signal is received by a receiving device provided on the automobile side, a drive signal is output from a control device, and the door lock mechanism is transmitted to the door lock mechanism. The locking operation or the unlocking operation is performed, so that the user does not need to insert the key into the door key cylinder and perform the turning operation each time, which is excellent in usability.

[0003] In this case, since the radio signal transmitted from the remote key is provided with an identification code for specifying the corresponding automobile, the identification signal is received even if a lock signal or an unlock signal is received from another remote key. If the codes do not match, the door lock mechanism cannot be operated. And, as the number of digits of the identification code increases, the number of combinations becomes enormous, so that the code is not easily decrypted by a third party, and the security against theft can be extremely increased. .

However, in case of an emergency, the door is provided with a door key cylinder so that a mechanical lock operation and an unlock operation as in the prior art can be performed. If it is, there is a risk of being stolen.

Therefore, recently, for example, if all the doors are closed when a door lock signal is received from a remote key, the control device causes the door lock mechanism to perform a locking operation and sets an alert mode to set the theft. Some are designed to prevent this.

That is, in the alert mode setting state, the control device causes the door lock mechanism to perform the unlock operation and release the alert mode only when an unlock signal from the remote key is received. When the door is opened by other means, an alarm operation is performed based on a detection signal from a door courtesy switch, an intrusion sensor, or the like.

In this alarm operation, for example, a horn is sounded, and a position lamp and a tail lamp are blinked so as to draw attention to the surroundings. Can be abandoned, and theft can be prevented as much as possible.

[0008]

However, in the above-mentioned conventional configuration, when the alarm operation is always performed for the occurrence of theft, the detection operation function of the intrusion sensor in the alert mode is set. There is a case where it is desired to partially change the function, for example, by stopping the horn or stopping the horn sounding operation function in the alarm operation.

[0009] This is because, for example, when a moving object such as a person or an animal is left in the vehicle when the vehicle is parked, the intrusion sensor is temporarily set so as to invalidate the detection of the object in the vehicle in the alert mode. The horn generates an audible alarm even when an intruder is detected and an alarm action is performed when it is necessary to stop and start, or when parking in a residential area at midnight, etc., and keeping the vehicle away from the car. This is the case when it is desired to invalidate the operation.

Conventionally, in such a case, since the function cannot be partially stopped from the outside in the alert mode setting state, there has been no other way but to cancel the alert mode setting in advance. However, this causes a problem that the anti-theft effect is reduced.

On the other hand, in order to solve such a problem, a partial function change such as stopping the detection operation function of the intrusion sensor in the alert mode setting state or stopping the horn sounding operation function in the alarm operation. It is conceivable to separately provide an operation switch for performing such a partial function stop on the remote key in order to enable the above.

However, in this case, the configuration of the remote key becomes complicated and the key grip portion becomes large, and it is difficult for the user to mount such an operation switch which is not always used on the remote key. Operation becomes complicated and causes erroneous operation.
There is a problem that operability is reduced as a whole.

The present invention has been made in view of the above circumstances, and has as its object to provide a function of disabling the activation of an intrusion sensor in the activated state of a security system or the sounding of a horn in an alarm operation. It is an object of the present invention to provide an anti-theft device for a vehicle which can be operated without increasing the anti-theft effect while improving the configuration and without complicating the structure of the portable transmitter.

[0014]

According to the present invention, an intrusion sensor and other sensors are activated based on a transmission signal from a portable transmitter to activate a security system.
The present invention is intended for a vehicle anti-theft device provided with control means for causing a horn to sound when detecting an unauthorized intruder and performing another alarm operation, and a shutter switch for detecting an open / closed state of a door key cylinder shutter. And a door key rotation switch for detecting a rotation operation of the door key cylinder in a locking operation direction and an unlock operation direction, and after the shutter switch detects an open state of a shutter of the door key cylinder, Lock operation direction of the door key rotation switch
Are the detection signals corresponding to the rotation operation in the unlocking direction.
When a rotation detection signal corresponding to a specific code obtained by combining signals in time series is inputted, the start of the intrusion sensor or the sounding operation of the horn is invalidated according to the specific code. However, it has features.

[0015]

According to the anti-theft device for a vehicle of the present invention, the control means switches between starting and stopping of the security system based on a transmission signal from the portable transmitter. When an intruder is detected by an intrusion sensor and other detection means, the horn is operated to sound and another alarm operation is performed to prevent theft. After the shutter switch detects the open state of the shutter of the door key cylinder, the control means responds to the turning operation from the door key rotation switch.
When a rotation detection signal corresponding to a specific code obtained by combining the detection signals in time series is input, the activation of the intrusion sensor or the sounding of the horn is invalidated according to the specific code. The function can be partially stopped while the device is in the activated state.

[0016]

An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1 showing the electrical configuration, a control device 1 as control means provided on the side of an automobile main body (not shown) as a vehicle has a CPU, ROM, RA
M and the like, and stores a security program and a detection program that is executed in a state where the alert mode is set, as described later.

The remote key 2 as a portable transmitter is
This is for opening and closing a door (not shown) of the automobile, and includes a key plate 2a as a key for mechanically opening and closing the door and a key grip 2b for holding the key plate 2a. The key grip 2b is provided with a lock switch 3 for transmitting a lock signal and an unlock switch 4 for transmitting an unlock signal. When these are pressed, a lock circuit is provided by a transmission circuit (not shown) incorporated therein. A signal or unlock signal is output as a radio signal.

On the other hand, a receiving device 5 for receiving a radio signal from the remote key 2 is provided on the vehicle side, and is connected to an input terminal P 1 of the control device 1. When receiving the radio signal via the antenna 5a, the receiving device 5 demodulates the signal into a lock signal or an unlock signal and inputs the signal to the control device 1.

The door (not shown) is provided with a door key cylinder, and a key plate 2a of the remote key 2 is provided so as to be inserted and rotatable. A shutter is provided at an insertion opening of the door key cylinder, and a shutter switch 6 for detecting insertion of the key plate 2a into the door key cylinder when the shutter is open.
Is provided. Further, a door key rotation switch 7 for detecting the rotation of the door key cylinder by the rotation operation is provided.

The door key rotation switch 7 detects rotation of the door key cylinder from the off position in the locking direction and the unlocking direction, and functions as a mechanical code signal reading device as described later. Also has. The output terminals of the shutter switch 6 and the door key rotation switch 7 are connected to input terminals P2 and P3 of the control device 1 via an input circuit 8, respectively.

The door is provided with a door lock mechanism 9 which is driven in accordance with the rotation of the door key cylinder. The door lock mechanism 9 is locked by a rotation operation in the lock direction, and is rotated in the unlock direction. The unlock operation is performed by the moving operation. Further, as described later, when a lock signal or an unlock signal is given from the output terminal Q1 of the control device 1 via the drive circuit 9a, the door lock mechanism 9 performs a lock operation or an unlock operation in response thereto. It has become.

A door courtesy switch 10 for detecting the open / closed state of the door is provided corresponding to each door, and is connected to an input terminal P4 of the control device 1 via an input circuit 8 (see FIG. 1). Represents a door courtesy switch 10 corresponding to one door).

A trunk courtesy switch 11 (hereinafter abbreviated as a T courtesy switch) and an engine hood courtesy switch 12 (hereinafter abbreviated as an EF courtesy switch) detect an open / close state of a trunk as a compartment door and an engine hood (not shown). And its output terminal is connected to the input circuit 8.
Are connected to the input terminals P5 and P6 of the control device 1 via.

The intrusion sensor 13 disposed in the vehicle compartment outputs a detection signal when detecting an object entering the vehicle compartment, and is composed of, for example, an infrared pyroelectric sensor or an ultrasonic sensor. A signal output terminal of the intrusion sensor 13 is connected to an input terminal P of the control device 1 through an input circuit 13a.
7 is connected.

The indicator 14 is a display lamp disposed on the instrument panel of the driver's seat, and receives a drive signal from an output terminal Q2 of the control device 1 via a drive circuit 14a.
In response to this, a lighting operation is performed to perform a display operation as described later.

A position lamp 15 and a tail lamp 16 as auxiliary lamps which are lit at night or at dusk also function as alarm means, and are output from output terminals Q3 and Q4 of the control device 1 via drive circuits 15a and 16a. When a control signal is given by the controller, the lighting operation is performed in response to the control signal. The horn 17 also functions as an alarming means, and emits a sound when a control signal is given from the output terminal Q5 of the control device 1 via the drive circuit 17a.

Next, the operation of this embodiment will be described with reference to the flowchart of the detection program shown in FIG. First, when a lock signal is transmitted from the outside by the remote key 2 when the vehicle is stopped with all the doors closed, the control device 1 gives a lock signal to the door lock mechanism 6 to perform a lock operation. At the same time, the security system is operated to execute the alert mode.

In this alert mode, the control device 1 activates the intrusion sensor 13 to receive a detection signal, and receives and monitors detection signals from the door courtesy switch 10, the T courtesy switch 11, and the EH courtesy switch 12. State.

While the security mode is being executed, when an unlock signal is received from the remote key 2, an unlock signal is given to the door lock mechanism 6 to perform the unlock operation and release the security mode. When the door is opened or the window glass is broken in a state in which the unlock signal is not received, and the vehicle enters the vehicle, the control device 1 sets the courtesy switches 10, 11, 1
The alarm operation is performed based on the detection signal from the second or the intrusion sensor 13.

In the alarm operation, the control device 1 controls the position lamp 15 and the tail lamp 16 to drive the driving circuit 15.
a, a horn 17 is intermittently sounded by giving a sound signal to the horn 17 via a drive circuit 17a.
Attempts have been made to call attention to others and give intruders abandon the conduct of cheating.

In the above case, the controller 1 executes the detection program shown in FIG. 2 and inserts it into the door key cylinder until a predetermined time, for example, 30 seconds, elapses after the alert mode is set. The input of a specific code signal from a key to be performed is accepted. This is because the user disables the detection operation function of the intrusion sensor 13 in the alert mode setting state, or disables the sounding operation function of the horn 17 when executing the alarm operation, by using the specific code “A”. Alternatively, it is for inputting "B".

That is, when the control device 1 starts the detection program, the control device 1 enters a standby state of waiting for the input of a detection signal from the shutter switch 6 until the shutter of the door key cylinder is opened in step S1. .
When a detection signal indicating that the shutter of the door key cylinder is open is output from the shutter switch 6, the control device 1 determines “YES” in step S 1, proceeds to step S 2, and proceeds to step S 2. Until the ON signal indicating that the door key cylinder has been rotated is input from step S3.

Thereafter, when a rotation detection signal is input from the door key rotation switch 7, the control device 1 proceeds to step S2.
Is determined to be "YES", and the process proceeds to step S4. Thereafter, steps S4 and S5 are repeated until the key plate 2a is pulled out of the door key cylinder, so that the locking direction from the door key rotation switch 7 or A detection signal indicating rotation in the unlock direction is input and the input pattern is stored.

When the operation of the input pattern is completed and the key plate 2a of the remote key 2 is pulled out of the door key cylinder and the shutter is closed, the controller 1
Determines “YES” in step S5 based on the detection signal from the shutter switch 6, shifts to step S6, and stores the code signal of the currently stored input pattern in the previously registered specific code “A”. It is determined whether or not they match.

The specific code "A" is sequentially output from the door key rotation switch 7 when, for example, the rotation operation of the door key cylinder is performed once on the lock side, once on the unlock side, and once on the lock side. The control device 1 corresponds to “YE” in step S6.
When it is determined as "S", the process proceeds to step S7, in which the detection signal of the intrusion sensor 13 is invalidated to be in a substantially start-stop state, and thereafter, the process returns to step S1.

If the code signal of the input pattern stored in step S4 matches the specific code "B" registered in advance, the control device 1 determines "NO" in step S6. When the process proceeds to step S8,
Here, "YES" is determined. In this case, the specific code “B” is sequentially output from the door key rotation switch 7 when, for example, the rotation operation of the door key cylinder is performed twice on the lock side, twice on the unlock side, and twice on the lock side. In response to the input pattern of the rotation detection signal, when the control device 1 determines "YES" in step S8, the process proceeds to step S9, in which the function of the horn 17 is invalidated and the sounding operation is performed at the time of the alarm operation. After setting so as not to be performed, the process returns to step S1.

If the code signal of the input pattern stored in step S4 does not match any of the specific codes "A" and "B" registered in advance, the control device 1 performs an erroneous input operation. Step S
In both Step 6 and Step S8, "NO" is determined, and the process returns to Step S1.

As described above, when inputting the specific code "A" or "B", the key play and 2a are inserted into the door key cylinder and finally turned to the lock side when turning. Since the operation is ended, the door lock mechanism 9 is locked when the key play and 2a are pulled out, so that the door is not opened carelessly, and therefore the alarm operation is not performed.

As described above, in this embodiment, the shutter switch 6 and the door key rotation switch 7 are provided on the door key cylinder, and the key plate 2a is inserted into the door key cylinder and rotated by the control device 1 in the alert mode. An input specific code is detected by these switches 6 and 7, and when the specific code "A" is input, the detection operation of the intrusion sensor 13 is invalidated, and when the specific code "B" is input, an alarm operation is performed. Horn 17 in
Disabled the ringing action of.

This makes it possible to temporarily start and stop the intrusion sensor, for example, when a moving object such as a person or an animal is left in a car when parking the car, or to park in a residential area at midnight or the like. When it is necessary to keep the horn out of the alarm sound generation operation even when executing the alarm operation when the vehicle is not far away from the car, for example, without complicating the configuration of the remote key 2, By simply performing a simple operation, it is possible to externally make settings corresponding to the settings.

In the above-described embodiment, the time during which the specific code can be input is set to 30 seconds after the alert mode is set. However, the present invention is not limited to this, and may be set to an appropriate time to achieve the purpose. Is what you can do. Further, in the above embodiment, the specific code is “A”,
The case where the input pattern is set to “B” has been described. However, the present invention is not limited to this, and a configuration using a specific code set to another input pattern may be used.

In the above embodiment, the case where the alarm operation is performed using the position lamp 15, the tail lamp 16 and the horn 17 has been described. However, the present invention is not limited to this. For example, a headlight may be used as the alarm unit. Alternatively, a dedicated alarm device may be provided.

[0043]

As described above, according to the vehicle antitheft device of the present invention, the door key cylinder is provided with the shutter switch for detecting the open / closed state of the shutter and the door key rotation switch for detecting the turning operation , and the control means. By
After the shutter switch detects the open state of the door key cylinder shutter, the door key rotation switch is
When a rotation detection signal corresponding to a specific code obtained by combining the corresponding detection signals in time series is input,
The configuration is such that the activation of the intrusion sensor or the ringing operation of the horn is invalidated in accordance with the specific code, so that the security of the portable transmitter can be reduced by a simple input operation without complicating the configuration. There is an excellent effect that the function can be partially stopped such as starting the intrusion sensor or disabling the sounding operation of the horn when necessary in the state in which the system is in the activated state.

[Brief description of the drawings]

FIG. 1 is a block diagram of an electrical configuration showing an embodiment of the present invention.

FIG. 2 is a flowchart of a detection program.

[Explanation of symbols]

1 is a control device (control means), 2 is a remote key (portable transmitter), 2a is a key plate, 3 is a lock switch,
4 is an unlock switch, 5 is a receiving device, 6 is a shutter switch, 7 is a door key rotation switch, 9 is a door lock mechanism, 10 is a door courtesy switch, 11 is a trunk courtesy switch, 12 is an engine hood courtesy switch, and 13 is an intrusion sensor. , 14 are indicators, 15 is a position lamp, 16 is a tail lamp, and 17 is a horn.

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Takashi Mizuno 1st Noda, Toyoda, Oguchi-machi, Oguchi-machi, Niwa-gun, Aichi Prefecture Inside Tokai Rika Electric Works (56) References JP-A-7-47928 (JP, A) JP-A-6-144158 (JP, A) JP-A-6-67225 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) B60R 25/10 G08B 21/00

Claims (1)

(57) [Claims] An intrusion sensor and another sensor are activated based on a transmission signal from a portable transmitter to activate a security system. When an intruder is detected by these, a horn is sounded and another horn is activated. in the antitheft apparatus for vehicle provided with a control means for performing an alarm operation, a shutter switch for detecting the open or closed state of the shutter of the door key cylinder lock operation direction and unlocking movement of the door key cylinder
; And a door key rotary switch for detecting the rotational operation of the work direction, the control means, after said shutter switch detects the open state of the shutter of the door key cylinder lock operation direction or Anne of the door key rotation switch Lock movement
Each detection signal corresponding to the turning operation in the operation direction is chronologically
When a rotation detection signal corresponding to a specific code that is combined is input, it is configured to invalidate activation of the intrusion sensor or invalidate a sounding operation of the horn according to the specific code. An anti-theft device for a vehicle.