JP2519047B2 - Wireless door lock controller for vehicles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Outline] The present invention relates to a wireless door lock control device for a vehicle, which automatically locks a door by limiting the unlocked state of the door to a predetermined time. The portable transmitter which can be put into a state is prevented from being automatically locked by a door left in an unmanned vehicle.

[Industrial applications]

The present invention relates to an improvement of a wireless door lock limiting device for a vehicle, which automatically locks a door when an unlocked state continues for a certain period of time.

[Conventional technology]

Generally, the door of a vehicle is provided with a lock mechanism. To lock (lock) and unlock (unlock) the lock / unlock knob inside the vehicle, either manually move up or down, or use the door key from outside the vehicle. It can be switched by inserting it into the cylinder and rotating it. Also, in vehicles equipped with an electric lock / unlock mechanism, door lock and unlock can be controlled by operating the manual lock / unlock SW (SW is a switch) inside the vehicle.

A wireless door lock control device for a vehicle, which is also called a keyless entry device, is a device that can control a door lock and an unlock from outside the vehicle without using a door key. The device consists of a receiver on the vehicle side and a portable transmitter that can be taken out of the vehicle. Conventionally, (1) the transmitter is provided with a dedicated door lock and unlock button, and the driver pushes the desired button. The door lock / unlock is controlled, or (2) the transmitter has only one button, and the door lock / unlock is generally reversed every time the driver pushes the button.

However, the method (1) requires two buttons, which increases the cost and may cause an erroneous operation.
In the method (2), since the state (locked or unlocked) of the door immediately before is reversed, if the state is forgotten or the remote operation is performed from a position that cannot be seen, the operation result remains uneasy. In particular, if left unlocked, there is a risk of theft. This also occurs due to an operation error in the method (1), and in the methods (1) and (2), if the operation itself is forgotten, there is a possibility that it remains in the unlocked state.

In order to eliminate the above-mentioned drawbacks, (3) it is effective that only the unlock instruction can be given from the transmitter, and the receiver automatically locks if the unlock state continues for a certain time or longer. Target. This is because the unlocked state is treated exceptionally, and it is always attempted to shift to the locked state effective in preventing theft. In addition, the number of operation buttons on the transmitter is also one, and operation mistakes do not occur.

[Problems to be solved by the invention]

However, in the method of (3), if the door is closed while the transmitter is left inside the company, the transmitter will be locked automatically after a certain time, and the transmitter inside the vehicle cannot be taken out. Unlocking using a machine becomes impossible.

 The present invention seeks to improve this point.

[Means for solving problems]

The present invention provides a receiver (20) having a function of setting an unlocked state of a door when an unlock code is received and a function of automatically setting a locked state when the unlocked state continues for a certain period of time on the vehicle side. A wireless door lock control device for a vehicle, which is provided with a transmitter (10) capable of instructing a receiver only to unlock a door, and an unmanned detection means for detecting that the inside of the vehicle is unmanned, An open / closed state detecting means for detecting the open / closed state of the door is provided, and the unmanned state detecting means detects an unmanned state in the vehicle, and the open / close state detecting means detects that the door is open and closed. A receiver circuit (25) is provided on the receiver (20) side for transmitting a predetermined code signal under the above condition, and a lock invalid code is returned when the predetermined code signal is received. 16) and transmitting circuit (17)
Is provided on the transmitter (10) side, and means (22, 27) for prohibiting the door lock and issuing an alarm while the lock invalid code is being received is provided on the receiver side. Is.

[Action]

If the receiver on the vehicle can detect the misplacement of the transmitter, the lock in this state can be prohibited exceptionally. For this reason, in the present invention, the receiver sends a door open → close code to the transmitter, and when the lock invalid code is returned from the transmitter as a response thereto, the transmitter is left behind (the transmitter is present). , Unmanned in the car, door closed) and prohibit the lock. However, since the antitheft effect is halved with this, an alarm is issued immediately after the door is closed to notify that the transmitter has been left behind. In this way, the transmitter in the vehicle can be taken out by opening the door that is not locked. Further, if the door is subsequently closed, the door is automatically locked after a fixed time, so that the antitheft effect does not deteriorate.

〔Example〕

FIG. 1 is a block diagram showing an embodiment of the present invention. 10 is a portable transmitter, 20 is a receiver on the vehicle side, and 30 is a door lock / unlock solenoid for driving an electric lock mechanism. . The transmitter 10 includes an unlock SW 11, a CPU 12, an unlock code transmission circuit 13, and an unlock code transmission circuit 13 in order to realize the method (3).
Although the internal antenna 14 for transmission is provided, in the present invention, the internal antenna 15 for reception, the door open → close code receiving circuit are further provided.
16, a lock invalid code transmission circuit 17 is added.

On the other hand, the receiver 20 is provided with a receiving circuit 21, a CPU 22, an output circuit 23, and an input circuit 24 in order to realize the method of (3). An antenna 26 with a built-in credit and a buzzer 27 for alarm are added (the buzzer 27 may be an existing one). The vehicle receiving antenna 31 is connected to the input side of the receiving circuit 21, and the input circuit 24
Door open / close detection SW32, lock / unlock detection SW3
3. Seat SW34 for seating detection is connected. The output of the output circuit 23 is used to control the solenoid 30, but the same thing can be done by the manual lock / unlock SW 35.

The operation will be described below with reference to the flowchart of FIG. When the door is in the locked state and the unlock code is received from the transmitter 10, the CPU 22 of the receiver 20 sends an unlock output to the solenoid 30 to put it in the unlocked state. In addition to this, the unlocked state can be obtained by a knob operation from the vehicle interior or SW35, but both are detected by the lock / unlock detection SW33. When this happens, CPU22
Monitors the door open / close detection SW32 and seat SW34, and opens the door →
When the closing is detected and the seat SW is turned off, it is determined that the door is closed in the passenger compartment, and if the transmitter 10 is left in the passenger compartment at this time, the door lock is prohibited.

If the transmitter 10 is left behind, the CPU 22 outputs a door open → close code, and when it is radiated as an electromagnetic wave into the vehicle interior by the transmission circuit 25 and the antenna 26, if the transmitter 10 is in the vehicle interior, the antenna 15 and the reception circuit. The code received by 16 is the CPU 12
Detected by the transmitting circuit 17, the corresponding lock invalid code
It can be detected by returning from the antenna 14.
Then, the CPU 22 that has detected this lock invalid code drives the buzzer 27 to issue a misplacement alarm, and cancels the lock output after a certain period of time.

Upon hearing this warning, the driver opened the door and the transmitter in the car
When 10 is taken out and the door is closed again, the CPU 22 outputs a lock output and locks automatically after a certain time after the transmitter 10 is separated to some extent and the lock invalid code cannot be received. Even if the door is not completely closed, the buzzer 27 is driven and a half-door alarm is issued.

〔The invention's effect〕

As described above, according to the present invention, in a system in which the vehicle is automatically locked after a certain period of time in the unlocked state, it is detected that the vehicle interior is unattended, and the door is changed from open to closed. Under the condition that it is detected, that is, when the condition that the transmitter left behind in the vehicle can not be operated if it is automatically locked after a certain time is satisfied, the transmitter left behind is automatically detected,
Since the door lock is prohibited and an alarm is issued, it is possible to prevent the transmitter from being locked without being left in the vehicle.

[Brief description of drawings]

 FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a flow chart showing the operation on the receiver side.

Claims (1)

(57) [Claims] 1. A receiver (20) having a function of setting an unlocked state of a door when an unlock code is received and a function of automatically setting a locked state when the unlocked state continues for a predetermined time is provided on a vehicle side, A wireless door lock control device for a vehicle, which is provided with a transmitter (10) capable of instructing the receiver only to unlock the door, and an unmanned detection means for detecting that the inside of the vehicle is unmanned. An open / closed state detecting means for detecting an open / closed state of the door is provided, the unmanned state detecting means detects an unmanned state in the vehicle, and the open / close state detecting means changes the door open to the door closed. A transmitter circuit (25) for transmitting a predetermined code signal under the condition of being detected is provided on the receiver (20) side, and a receiving circuit for returning a lock invalid code when the predetermined code signal is received. (16) and transmitting circuit (17)
A vehicle provided with a transmitter (10) on the receiver side, and means (22, 27) for prohibiting the door lock and issuing an alarm while the lock invalid code is being received on the receiver side. Door lock control device for car.