JPH0752751A - Wrong operation preventer of remote locking-unlocking device for vehicle - Google Patents

Abstract

PURPOSE:To prevent auto theft from occurring by setting the unlocking signal output of a transmitter to be weaker than the locking signal output, and making an antitheft lock automatically locked at the time when specified time has elapsed since the unlocked state, or a transmitter carrier goes far from the car otherwise. CONSTITUTION:When a locking operation button 13 of a transmitter 11 is pushed, a locking signal of the specified output is outputted, and if so, a signal is transmitted to a control circuit 18 from a receiving circuit 17 having received it, whereby an actuator 19 is operated and a locking device is locked. In this case, the unlocking signal output by an unlocking operation button 14 is set to be weaker than the locking signal output, therefore even if the unlocking operation button 14 is pushed by mistake at a remote place, the lock will not be unlocked. In addition, a state switch 21 is operated as long as the constant time by a time-limit circuit and thereby unlocking takes place, and if the specified time has elapsed, the locking signal is outputted out of the receiver 12, so it comes to a state of being locked. In this connection, the receiver 12 outputs the locking signal automatically when the transmitter 11 becomes far distant from a car body and a specified period check signal from the transmitter 11 becomes unreceived.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an erroneous operation preventing device for a vehicle remote locking / unlocking device which locks and unlocks a door of an automobile by remote control.

[0002]

2. Description of the Related Art As a general structure of a conventional remote locking / unlocking device for a vehicle of this type, there is a circuit structure as shown in FIG. 1, for example.

That is, reference numeral 1 denotes a remote control transmitter carried by a driver or the like. The remote control oscillator 1 has an ID code for transmitting a signal only to one's own car and a lock or unlock door of the own car. A function code for transmitting a signal for locking is built in, and by pressing a predetermined switch installed on the transmitter, a locking or unlocking signal is wirelessly sent to your car. It is something.

Numeral 2 is mounted on a vehicle and receives a radio wave from the remote control transmitter, and further detects (demodulates) the radio wave.
Is a receiver for transmitting to the control circuit 3, and the control circuit 3 recognizes the ID code and the function code,
It decodes and outputs an actuator operation signal for locking or unlocking the actuator 4.

[0005]

However, in the remote locking / unlocking control device for a vehicle having such a conventional structure, the door of the vehicle is locked, the transmitter 1 is carried, and the vehicle is separated from the vehicle. If the unlock switch of the transmitter 1 is still pressed and operated by mistake, the door of the vehicle remains unlocked and the crime prevention is poor, resulting in the risk of theft. Dots occur.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above conventional problems, and in a transmitter of a remote locking and unlocking device for a vehicle, an unlocking output is output rather than a locking output emitted from the transmitter. The lock operation by the transmitter can be performed from a comparatively distant point, and the unlock operation by the transmitter can be unlocked only when the vehicle is relatively near, that is, Especially when it is far away from the vehicle, make sure that the unlocking operation button on the transmitter will not be unlocked even if it is operated by mistake, and that it will automatically lock in the unlocked state. An object of the present invention is to provide an erroneous operation preventing device for a vehicle remote locking / unlocking device, which can prevent unlocking due to erroneous operation.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail based on the embodiments shown in the drawings.

Embodiment 1 In FIG. 2, 11 is a transmitter carried by a driver or the like, and 12 is a transmitter.
Is a receiver mounted on the transmitter 11. The transmitter 11 receives a lock operation button 13, an unlock operation button 14, a control circuit 15 for generating a modulation signal by operating the buttons, and the modulation signal. It also has a high-frequency unit 16 that outputs a locking or unlocking signal at a high frequency.

Further, the receiver 12 is a receiving circuit 17 for receiving the output from the oscillator 11, and a control circuit 18 for operating the actuator 19 by a signal from the receiving circuit 17.
Further, a door switch 20 for detecting opening of the door and a lock / unlock state switch 21 are provided.

The configuration of this embodiment has been described above. Next, its operation will be described. The locking operation button 1 of the transmitter 11 will be described.
When 3 is pushed, the lock signal of the set output is output from the transmitter, and the lock of the vehicle can be performed by remote control even if it is about 500 m away from the vehicle.

When the unlocking operation button 14 of the transmitter 11 is pushed, an unlocking signal is output to the receiver 12. The unlocking signal is output, for example, about the locking signal. As a low output signal of about 1%, the control circuit controls the high frequency section (power control) and outputs it. Therefore, the unlocking signal from the transmitter cannot be received by the receiver unless it is very close to the vehicle (for example, within an area of about 5 m). Therefore, the unlocking operation button 14 is pressed at a place far from the vehicle. Even if it is moved, it is not unlocked, so that the unlocking probability due to an erroneous operation of the unlocking operation button 14 is increased.

Embodiment 2 In FIG. 3, 11 is a transmitter having lock and unlock buttons similar to those in Embodiment 1, and 12 is a receiver similar to the receiver shown in FIG. Has a time limit circuit 2
2, a flip-flop circuit 23, an inverter 24, a first AND circuit 25, a second AND circuit 26, and a third AND circuit 27 are provided. Reference numeral 21 indicates a status switch.

Next, the operation will be described with reference to FIG.

When leaving the vehicle, the lock button of the transmitter 11 is operated to bring the lock state.

When the unlock button is operated, the transmitter 11 outputs an unlock signal. In the receiver 12 which has received this unlocking signal, the time switch operates the state switch for a fixed time to unlock, and when a certain time elapses from the unlocked state, the locking signal is automatically output to lock. , It helps prevent theft.

That is, when the state switch 21 is closed due to the locked state, the state switch 21 is closed.
Output becomes high level, and there is an unlock signal (Fig. 4A).
When is input, the timing circuit 22 is triggered and output (Fig.
B) is reversed. At this time, since the state switch 21 is in the locked state, the unlock signal (FIG. 4D) is output via the second AND circuit 26, and as a result, the unlock is performed.

Thus, since the lock device is unlocked, the state switch 21 becomes low level (FIG. 4C), the output of the AND gate 26 becomes low level, and the unlocking operation ends.

Thereupon, due to the action of the time limit circuit 22, it is reversed after a lapse of a certain time (FIG. 4B), and a lock signal is output via the first AND circuit 25 and the third AND circuit 27, and the lock device is locked. When the door is opened in the unlocked state and the flip-flop circuit is reset by the door signal from the door switch, the third AND circuit 27 prohibits the locking output.

5 and 6, this embodiment is similar to the first embodiment in that the oscillator 11 has a control circuit 15 and a high frequency section 16 therein.
And the receiver 12 has a receiving circuit 17, a control circuit 18,
It has an actuator 19.

In this embodiment, as shown in FIG.
The transmitter 11 transmits an unlocking signal, and then transmits a confirmation signal (pulse) a fixed number of times at a fixed period (Fig. 6).
I).

On the other hand, the receiver 12 confirms the unlock signal from the transmitter 11 (FIG. 6C), and after unlocking, receives the confirmation signal from the transmitter 11 a fixed number of times and a fixed number ( 6B), when this signal is no longer received, the lock process is performed (FIG. 6D).

In other words, as for the confirmation signal from the transmitter, the signal received by the receiver becomes gradually weaker as the transmitter becomes farther from the vehicle body, and finally the signal cannot be received. At this time, a lock signal is output and the lock device is locked. Therefore, in this embodiment, if the person carrying the transmitter goes away from the vehicle body, it is automatically locked.

As described above, according to the present invention, there are three embodiments, and the first one is that the output of the unlock signal by the transmitter is smaller than the output of the lock signal and is far from the vehicle body. Does not unlock even if you push the unlock button on the transmitter by mistake, and the second one is automatically locked after a certain time has passed from the unlocked state, and the third one is a call. When a person carrying a container is far away from the vehicle, the vehicle locking device is automatically locked.

[0024]

Therefore, according to the present invention, if the person carrying the transmitter is separated from the vehicle, the locking device will not be unlocked even if the transmitter is erroneously operated, and the vehicle is highly safe against theft. A remote locking / unlocking device can be provided.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a conventional example.

FIG. 2 is an explanatory circuit diagram of a device according to the first embodiment of the present invention.

FIG. 3 is a circuit explanatory diagram of a second embodiment device of the present invention.

FIG. 4 is an explanatory diagram of waveforms according to the second embodiment of the present invention.

FIG. 5 is a circuit diagram of the device of the third embodiment of the present invention.

FIG. 6 is an explanatory diagram of waveforms according to the third embodiment of the present invention.

[Explanation of symbols]

11 ... Oscillator 12 ... Receiver 13 ... Locking operation button 14 ... Unlocking operation button 15 ... Control circuit 16 ... High frequency part 17 ... Reception circuit 18 ... Control circuit 19 ... Actuator 20 ... Manual door switch 21 ... Status switch 22 ... Time circuit 23 ... Flip-flop circuit 24 ... Inverter 25 ... First AND circuit 26 ... Second AND circuit 27 ... Third AND circuit

Claims (3)

[Claims] 1. A reception control unit (12) for driving a locking mechanism of a vehicle upon receiving a locking signal and an unlocking signal by radio waves, and a remote control for transmitting the locking signal and the unlocking signal by radio waves to the reception control unit. In the erroneous operation prevention device for a remote locking device for a vehicle, which is configured by a section (11), the unlocking signal output of the remote control unit is set to a smaller electric power than the locking signal output. Device misoperation prevention device. 2. A reception control unit (12) for driving a locking mechanism of a vehicle by receiving a locking signal and an unlocking signal by radio waves, and a remote control for transmitting the locking signal and the unlocking signal by radio waves to the reception control unit. In the erroneous operation prevention device for a vehicle remote locking device, which comprises a part (11), the reception control part (12) is provided with a status switch (21) for detecting that the locking mechanism is in an unlocked state. When the switch (21) outputs an unlocking state signal, it outputs a locking control signal to the actuator, and when an unlocking signal is received from the remote control unit, it outputs an unlocking control signal to the actuator and locks control to a predetermined level. An erroneous operation preventing device for a vehicle remote locking / unlocking device, comprising a control circuit for prohibiting time. 3. A reception control unit (12) for driving a locking mechanism of a vehicle upon receiving a locking signal and an unlocking signal by radio waves, and a remote control for transmitting the locking signal and the unlocking signal by radio waves to the reception control unit. In a device for preventing erroneous operation of a remote locking device for a vehicle, which is composed of a section (11), the remote control section sends a confirmation signal at a predetermined time interval after issuing an unlocking signal, and the reception control section The operation of a remote locking and unlocking device for a vehicle, comprising a control circuit for determining whether or not the confirmation signal is received in synchronization with the confirmation signal and outputting a locking control signal to an actuator when the reception is stopped. Prevention device.