JPH07224564A - Burglar alarm device for car - Google Patents

Abstract

PURPOSE:To eliminate the troubles of setting by providing a burglar alarm device body which is set based on an output of a first OR gate and which is reset based on the output of a second OR gate. CONSTITUTION:If either of a door unlock action signal from a control circuit 15 or a reset signal from a second switch 30 which acts in association with an ignition switch is supplied to a first OR gate 32, a reset signal is supplied to a reset terminal of a microcomputer 22. And if a door lock action signal from the circuit 15 and an ON signal from a first switch 31 which acts when a lock knob is in a door locked state are supplied to a second OR gate 33, a door lock command signal is outputted to an AND gate 21 to reset the microcomputer 22. By this method, a burglar alarm device body 27 is set and set sound at the time of setting is delivered from a buzzer 24.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle burglar alarm device which issues an alarm when a vehicle is stolen.

[0002]

2. Description of the Related Art The configuration of a conventional vehicle burglar alarm system, particularly a burglar alarm system that operates in conjunction with a keyless system (which can be locked and unlocked by remote operation), will be described with reference to FIGS. explain. 2 shows the configuration of the transmission system on the key side used by the driver, and FIG. 3 shows the configuration of the reception and warning system on the vehicle side. First, in FIG. 2, 1 is a door lock switch, 2 is a door unlock switch, 4 is a first input interface of the door lock switch 1, and 5 is a second input interface of the door unlock switch 2.

Reference numeral 7 is a first code creating circuit for encoding a door lock signal supplied from the first interface 4, and 8 is a door unlock signal supplied from the second interface 5. A second code creating circuit 10 for coding the code is a transmitting circuit, and each time a code signal is supplied from each of the first and second code creating circuits 7 and 8, they are modulated to modulate the first antenna 11 Output from. It should be noted that a transmitter is configured by the respective units indicated by reference numerals 1 to 10, and these are provided on the key.

Next, the structure of the receiver and the theft alarm device connected to the receiver will be described with reference to FIG. That is, 12 is the second antenna, 13 is the second antenna 12
The receiving circuit for demodulating and outputting the code signal received by 14 is a code decoding circuit for decoding the code signal received by the receiving circuit 13.

Reference numeral 15 is a control unit for inputting a signal from the code decoding circuit 14 to create various control signals, 16 is a first driver which receives a control signal from the control unit 15 and drives a door lock actuator, 17 Is a second driver 17 that is supplied with a control signal from the control unit 15 and drives the door unlocking actuator.
When activated, 6 and 17 have a detection element for detecting the current used for the operation, and when activated, supply a high level detection signal to first and second AND gates 18 and 19 described later.

Reference numeral 18 denotes a first AND gate, which receives a detection signal from the first driver 16 and a door lock operation control signal output from the control circuit 15, and becomes high level when both signals are supplied. Outputs a lock instruction signal. Reference numeral 19 denotes a second AND gate, which is the second driver 17
From the control circuit 15 and the door unlock operation control signal output from the control circuit 15, and when both signals are supplied, a high level unlock instruction signal is supplied to the reset terminal of the microcomputer 22 described later. To do.

A door switch 20 is turned on when the door is closed and outputs a high level door closing detection signal. Reference numeral 21 is a third AND gate, and when a lock instruction signal is supplied from the first AND gate 18 and a door closing detection signal is supplied from the door switch 20,
The set signal is supplied to the set terminal of the microcomputer 22 described later. The set signal is OR gate 2
3 is supplied to the buzzer 24, and the buzzer 24 is activated and the burglar alarm device body 27 is set to the alarm state in a short time.

Reference numeral 22 denotes a microcomputer, which performs the following signal processing in the theft alarm device main body 27 and outputs an alarm signal to the OR gate 23 when it is determined that the vehicle has been stolen. That is, detection signals are input to the microcomputer 22 from sensors (not shown) for detecting turning on of an ignition switch, entry into a vehicle, disconnection of a battery, and the like (not shown), and software for incorporating them is used. Judge whether it is in the stolen state,
If it is determined that it has been stolen, an alarm signal is output.

Reference numeral 23 is an OR gate, which receives a pulse-shaped set signal from the third AND gate 21 and a high-level alarm signal from the microcomputer 22,
When either one of the signals is supplied, the buzzer 24 gives a notification until it is unlocked. A drive control circuit is naturally connected between the buzzer 24 and the OR gate 23.

Reference numeral 25 in the drawing is a keyless receiving system, which is composed of a receiving circuit 13, a code decoding circuit 14, a control circuit 15 and the like, and a reference numeral 26 is an actuator driving section, which is a first and a second driver 16. Reference numeral 27 denotes a burglar alarm device body, which is composed of first, second and third AND gates 18, 19, 21, a microcomputer 22, an OR gate 23, a buzzer 24 and the like.

That is, in the above structure, when the door lock switch 1 is turned on, a door lock signal is output as a radio wave through the first input interface 4, the first code creation circuit 7, the transmission circuit 10 and the first antenna 11. It

The radio wave is supplied to the code decoding section 14 via the second antenna 12 and the receiving circuit 13. The code decoding unit 14 determines that the door lock switch 1 is turned on based on the supplied code signal, and supplies a door lock operation control signal to the first driver 16 that drives the door lock actuator. When the current for driving the actuator flows, the first driver 16 drives the first AND gate 1 to output a detection signal indicating the current.
8 are supplied.

On the other hand, since the door lock operation control signal output from the control circuit 15 is supplied to the first AND gate 18, the first AND gate 18 outputs the door lock instruction signal to the third AND gate 21. . At this time, when the door is closed and the high level signal is supplied from the door switch 20, the set signal is supplied from the third AND gate 21 to the set terminal of the microcomputer 22, and the antitheft device 27 is set. It At this time, the buzzer 24 emits a set sound for a short time by the set signal.

Next, when the driver gets into the vehicle, inserts a key into a key cylinder to turn on an ignition switch (not shown), and turns the key to the on position to turn on the door unlock switch 2, A door unlock signal is output as a radio wave via the second input interface 5, the second code creation circuit 8, the transmission circuit 10, and the first antenna 11.

Further, the radio wave is supplied to the code decoding section 14 via the second antenna 12 and the receiving circuit 13. In the code decoding unit 14, it is judged based on the supplied code signal that the door unlock switch 2 is turned on, and the second door unlock actuator is driven.
When the control signal is supplied to the driver 17 to drive it, and the second driver 17 receives a current for operating the actuator,
A detection signal indicating this is supplied to the second AND gate 19.

On the other hand, since the door unlock signal output from the control circuit 15 is supplied to the second AND gate 19, the second AND gate 19 sends the door unlock instruction signal to the reset terminal of the microcomputer 22. Is supplied as a reset signal, whereby the antitheft device body 27 is reset.

[0017]

However, in the above-mentioned vehicle burglar alarm device, in order to set the burglar alarm device main body 27 to the set state, a lock current flows through the actuator by the sensor of the first driver 16. There was a problem that it could not be set unless it was detected.

Therefore, if the door lock device is out of order, it cannot be set, and there is a problem that the alarm device cannot be set even when it is desired to operate the alarm device only while the vehicle is away from the vehicle.

Further, since the theft alarm device main body 27 cannot be set without using the keyless system, there is a problem that it cannot be used when the battery on the key side is exhausted or when there is a failure.

The present invention has been made by paying attention to such a problem, and even if the keyless system is not used,
Another object of the present invention is to be able to set the anti-theft device body even if the door lock actuator is out of order.

[0021]

According to a first aspect of the present invention, a door lock operation control signal and a door for receiving the door lock signal and the door unlock signal to switch the vehicle door to a locked state or an unlocked state. A control device that outputs an unlock operation control signal, a door lock operation control signal supplied from the control device and an actuator that operates in a door lock or door unlock direction based on the door lock operation control signal, and a door that is manually operated. A first switch that is turned on when locked, a second switch that is provided so as to be operable from the vehicle interior, a door lock operation control signal that is output from the control device, and a signal that is output from the first switch. A first OR gate that takes a logical sum, a door unlock operation control signal output from the control device, and the second switch Comprising a second OR gate for ORing the signals outputted, it is set on the basis of an output from said first OR gate, and a theft alarm device body is reset based on an output from the second OR gate.

According to a second aspect of the invention, the first switch is provided on the door and operates in conjunction with the lock knob of the door.

In the invention of claim 3, the second switch is also used as the ignition switch.

[0024]

According to the first aspect of the invention, the first switch is turned on to set the burglar alarm device main body even when the door lock signal is supplied by the keyless to lock the door or the door is manually locked. When the second switch in the vehicle compartment is turned on, the theft alarm device is reset.

According to the second aspect of the present invention, when the door is closed and the door is manually locked, the burglar alarm device body is set.

According to the third aspect of the present invention, when the key is inserted into the ignition switch and the key is rotated, the body of the theft alarm device is reset.

[0027]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the vehicle theft alarm device according to the present invention does not change the configuration of the transmitting side shown in FIG. 1, but only the receiving side. In addition, in FIG.
The same or equivalent components as those described in FIG. 3 are designated by the same reference numerals, and detailed description thereof will be omitted.

Reference numeral 30 is a second switch which operates in conjunction with the ignition switch and outputs a reset signal when turned on. 31 is the first that is turned on when the lock knob provided on the door is brought into the door lock state.
The switch 32 is a first OR gate, and is the control circuit 15
The door unlocking operation control signal output from the second
When any one of the reset signals output from the switch 30 is supplied, the reset signal is supplied to the reset terminal of the microcomputer 22. 33 is the second
When the door lock operation control signal from the control circuit 15 and the ON signal from the first switch 31 are supplied from the OR gate, the OR gate outputs a door lock instruction signal to the AND gate 21.

That is, when the first switch 31 having the above-described structure is turned on by closing the door and setting the door lock knob to the lock position, a set signal is output from the AND gate 21 to the microcomputer 22 and the theft alarm device. The main body 27 is set, and at that time, a set sound is emitted from the buzzer 24. Further, when the second switch 30 is turned on, it is reset.

In the configuration of the above embodiment, the door switch 20 is used as the first switch 31, and the door switch 2
The output of 0 may be supplied to the second OR gate 33. In this case, the AND gate 21 becomes unnecessary.

[0031]

According to the invention of claim 1, even if the driver does not forget to set the theft alarm device, it is automatically set when the door is closed, so that there is no annoyance. It Further, even if the actuator of the door lock is out of order, the alarm device is set, so that the driver can get away from the vehicle for a short time.

According to the second aspect of the present invention, the door lock state can be reliably detected by the first switch. Therefore, the effect that the alarm device can be reliably set only by closing the door is exhibited.

According to the third aspect of the invention, the effect that the alarm device can be reliably reset by inserting the key into the key cylinder of the ignition switch and turning it is exhibited.

[Brief description of drawings]

FIG. 1 is a circuit block diagram of an embodiment according to the present invention.

FIG. 2 is a circuit block diagram of a conventional transmitter.

FIG. 3 is a circuit block diagram of a conventional receiver.

[Explanation of symbols]

 30, 31 switch 23, 32, 33 OR gate

Claims (3)

[Claims] 1. A control device for receiving a door lock signal and a door unlock signal to output a door lock operation control signal and a door unlock operation control signal for switching a vehicle door to a locked state or an unlocked state. A door lock operation control signal supplied from the control device and an actuator that operates in a door lock or door unlock direction based on the door lock operation control signal; and a first switch that is turned on when the door is manually locked. A second switch operably provided from the passenger compartment, a door lock operation control signal output from the control device, and the first switch.
A first OR gate that ORs the signal output from the switch, and a second OR gate that ORs the door unlock operation control signal output from the controller and the signal output from the second switch A burglar alarm device for a vehicle, which is set based on an output from the first OR gate and reset based on an output from the second OR gate. 2. The vehicle burglar alarm device according to claim 1, wherein the first switch is provided on the door and operates in conjunction with a lock knob of the door. 3. The vehicle burglar alarm device according to claim 1, wherein the second switch is also used as an ignition switch.