JPH0371551B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a wireless lock/unlock device that controls locking/unlocking of a door lock device by receiving a unique code signal transmitted from a portable radio.

[Prior Art] Various devices have been proposed in recent years as devices for locking and unlocking door lock mechanisms employed in vehicles, etc., taking into account the possibility of a key plate being left behind in a vehicle interior.

Conventionally, as this type of locking/unlocking device, the inventors of the present application have proposed a wireless locking/unlocking device as shown in FIG. (Japanese Unexamined Patent Publication No. 59-24075) In this method, a radio device 1 is installed on the side of the member to which the door lock mechanism is attached, that is, on the vehicle body side, and a portable radio device 2 is installed to exchange signals with this radio device 1. The person using the vehicle must carry one. When a person carrying this portable radio device 2 turns on a start switch (not shown) installed near a doorknob, for example, the radio device 1 is started, and a predetermined call is made from this radio device 1. A signal is sent. When the portable radio device 2 receives the calling signal transmitted from the radio device 1 in this way, a unique code signal is transmitted from the portable radio device 2 in response to this calling signal, and the unique code signal is transmitted to the radio device 1. When received, the received code corresponding to the received unique code signal is compared with the unique code stored in advance, and when each code matches, the lock/unlock control device 3 that locks and unlocks the door lock mechanism is activated. It's getting old. That is, a person carrying the portable radio device 2 can unlock the door simply by turning on the activation switch.

According to such a wireless locking/unlocking device, even if the door is locked by a so-called keyless lock while the portable wireless device 2 is left behind in the vehicle, the wireless device can be locked by turning on the activation switch. 1 and portable radio device 2 cooperate to unlock the door. Furthermore, since the portable radio device 2 only responds to the calling signal from the radio device 1, the power consumption of the portable radio device 2, which is normally battery-powered, can be minimized.

[Problems to be Solved by the Invention] However, if a plurality of people carrying portable wireless devices 2 each having a different unique code signal
For example, according to the above example, if one of the vehicles is located nearby and turns on the activation switch, multiple portable radios 2 will simultaneously respond to the call signal from the radio device 1, and each mobile There is a possibility that the unique code signals simultaneously transmitted from the radio device 2 influence each other and the wireless device 1 is unable to receive the unique code signal from the portable radio device 2 of the person who has operated the activation switch accurately.

[Means for Solving the Problems] The present invention provides a radio that is capable of receiving a unique code signal from a portable radio 2 of a person who has operated an activation switch accurately even when the above-mentioned problems are considered. An object of the present invention is to provide a locking/unlocking device, and in order to achieve this object, the present invention provides a first locking/unlocking device.
As shown in the complaint correspondence diagram in the figure, there is a starting switch 101 installed on the side of the member to which the door lock mechanism is attached, and a calling device that sends out multiple types of calling signals sequentially and time-shifted in response to the operation of the starting switch 101. a signal generating means 103; a portable radio 105 that receives the calling signal and transmits a unique code signal when the same calling signal as a predetermined signal is received; It is comprised of a verification means 107 that verifies the received unique code stored in advance, and a locking/unlocking means 109 that locks or unlocks the door lock mechanism based on the verification result of the verification means 107.

[Embodiments of the Invention] Hereinafter, embodiments of the present invention will be described based on the drawings.

FIG. 2 is an example of a block diagram provided on the door lock mechanism side of the wireless locking/unlocking device according to the present invention, and FIG. 3 is an example of a portable radio device employed in the wireless locking/unlocking device. It is a block diagram.

This embodiment assumes a locking/unlocking device employed in a vehicle. In FIG. 2, 10 is a wireless device attached to the vehicle body, and this wireless device 1
0 has a microcomputer 11 that controls the entire device, and a transmitting circuit 12 that transmits a predetermined calling signal from a transmitting antenna 13 in response to a command from the microcomputer 11.
Moreover, this wireless device 10 also includes a receiving antenna 14.
The microcomputer 11 further includes a receiving circuit 15 for receiving a unique code signal from a portable wireless device as described below, and converts the unique code signal received by the receiving circuit 15 into code data in the microcomputer 11. This code data (received code) is compared with a unique code stored in advance, and when they match, a determination signal is output to the locking/unlocking control device 3.

Here, the transmitting circuit 12 includes, for example, three types (A
(Type B, Type B, and Type C) are generated sequentially with a time shift.

On the other hand, the specific configuration of the portable wireless device carried by the person using the vehicle is shown in FIG. In this example, since there are three types of calling signals transmitted from the wireless device 10 as described above, there are also three types of portable radios that respond to the calling signals, and each type has an A-type calling signal and a B-type calling signal. It is assigned to a C-type calling signal, and becomes a portable radio that responds only to the assigned calling signal.

In FIG. 3, 22 is a receiving circuit that receives a calling signal from the radio device 10 via the receiving antenna 21, and 23 is a receiving circuit that verifies whether the received calling signal is assigned to the portable radio device. The microcomputer is a microcomputer that outputs unique code data that is unique to the portable radio device when it determines that it has been assigned. and,
24 is a transmitting circuit, and this transmitting circuit 24 modulates the unique code data output from the microcomputer into a predetermined signal, and transmits this modulated signal as a unique code signal from the transmitting antenna 25. . Note that the unique code used for the verification by the microcomputer 11 in the wireless device 10 and the unique code output from the transmitting circuit 24 in the portable wireless device are the same. In addition, the portable radio having the above configuration is operated by batteries, and only the receiving circuit 22 is always in operation, and when this receiving circuit 22 receives a call signal of some kind, other Power is supplied to each circuit from the battery.

Next, the operation of the locking/unlocking device will be explained in accordance with the flowchart in FIG. 4a showing the operation of the microcomputer in the portable radio device and the flowchart in FIG. do.

It is assumed that a person carrying a portable radio device that responds to a type A call signal from the radio device 10 turns on the activation switch 4 provided on the vehicle body. First, when the start switch 4 is turned on, an A-type calling signal is output from the transmitting circuit 12 based on a command from the microcomputer 11, and the A-type calling signal is received from the wireless device 10. At this time, the receiving circuit 22 of the portable radio device carried by the person who turned on the start switch 4 is checking whether or not the calling signal is received, and the receiving circuit 22 of the portable radio device carried by the person who turned on the start switch 4 is checking whether the calling signal is received or not, and the receiving circuit 22 of the portable radio device carried by the person who turned on the start switch 4 is checking whether or not the calling signal is received. Upon receiving the calling signal, the microcomputer 23 further checks whether the received calling signal is of type A. Here, if the received calling signal is determined to be of type A, the transmitting circuit 24 transmits a unique code signal. On the other hand, the wireless device 10
After transmitting the calling signal as described above, the microcomputer 11 within the unit checks whether there is a response to the calling signal for a predetermined period of time. When a unique code signal is received, it is determined whether the unique code signal matches a unique code stored in advance. In this case, since the received unique code matches the stored unique code,
An activation signal is output to the lock/unlock control device 3. Therefore, for example, the locked state of the vehicle door lock mechanism is released by the operation of the lock/unlock control device 3.

The above operation is an operation when a person carrying a portable radio that responds to a type A call signal from the radio device 10 turns on the start switch 4, but other portable radios, that is, a type B call signal,
When a person carrying a portable wireless device that responds to a C-type calling signal turns on the start switch 4, substantially the same operation as described above is performed.

To explain the operation in this case, after the A type calling signal is transmitted from the wireless device 10 attached to the vehicle body side, if there is no response within a predetermined time, the B type calling signal is subsequently transmitted from the wireless device 10. be done.
If the person attempting to lock and unlock the door of the vehicle carries a portable radio that responds to the B type calling signal, the radio device 10 receives a response (unique code signal) from the portable radio. is received and the locking/unlocking control device 3 is activated in the same manner as above. Furthermore, if there is no response within a predetermined time after the wireless device 10 transmits the B-type paging signal, the wireless device 10 further transmits a C-type paging signal. If the person attempting to lock and unlock the lock carries a portable radio that responds to the C-type calling signal, the radio device 10 receives a response from the portable radio and performs the same operation as above. The lock control device 3 is activated.

As described above, according to this embodiment, the wireless device 1
0 to 3 types (A type, B type, C type)
Since each type of calling signal is transmitted while checking whether or not there is a response, even if a person carrying a portable radio that responds to the three types of calling signals is located near the vehicle at the same time, the radio signal will not be transmitted. Each portable radio device does not simultaneously transmit a unique code signal in response to a calling signal from the device 10, and in other words, simultaneous reception of unique code signals in the wireless device 10 can be prevented. Further, the lock mechanism can be locked and unlocked only when a unique code signal that is the same as the unique code stored in the wireless device 10 is transmitted from any one of the three types of portable wireless devices described above, and Locking and unlocking will not take place unless a unique code is sent. Therefore, even if the start switch 4 is operated by mischief or the like, it will not be locked or unlocked.

In the above embodiment, the wireless device 10 transmits a plurality of types of paging signals one by one while checking whether or not there is a response. However, the transmission of the calling signal may be stopped when the first response is received. Further, in the above embodiment, the unique code signals output from the three types of portable radios are common, but the present invention is not limited to this.
Each may be different. In this case, the wireless device 10 uses a plurality of types of unique codes that are used for matching with the received code. Furthermore, the types of paging signals transmitted from the wireless device 10 are of course not limited to three types. In this case, the type of portable radio that can be used always corresponds to the type of the calling signal.

[Effects of the Invention] As explained above, according to the present invention, a plurality of types of calling signals are transmitted sequentially and time-shifted from the wireless device installed on the side of the member to which the door lock mechanism is attached. When multiple people start using this type of portable radio, each portable radio does not respond to the calling signal at the same time, and the person operating the activation switch cannot lock or unlock the lock correctly. I can guarantee it.

[Brief explanation of drawings]

FIG. 1 is a diagram corresponding to claims of the wireless locking/unlocking device according to the present invention, FIG. 2 is a block diagram showing an example of a wireless device employed in the wireless locking/unlocking device according to the present invention, and FIG. 3 is a diagram of the wireless locking/unlocking device according to the present invention. FIG. 4a is a flowchart showing the operation of the portable radio device shown in FIG. 3, and FIG. FIG. 5 is a block diagram showing an example of a conventional wireless lock/unlock device. 101... Starting switch, 103... Calling signal generating means, 105... Portable radio, 107... Verifying means, 109... Locking/unlocking means, 3... Locking/unlocking control device, 4... Starting switch, 10... ...Wireless device, 11...Microcomputer, 12, 24
... Transmission circuit, 13, 25 ... Transmission antenna,
14, 21...Receiving antenna, 15, 22...
Receiving circuit, 23...microcomputer.

Claims (1)

[Claims] 1. A starting switch installed on the side of the member to which the door lock mechanism is attached, a calling signal generating means for sequentially transmitting a plurality of types of calling signals with a time lag in response to the operation of the starting switch, and receiving the calling signal. a portable radio device that transmits a unique code signal when a calling signal identical to a predetermined signal is received, and a verification means that receives the unique code signal from the portable radio device and compares it with a unique code stored in advance. and locking/unlocking means for locking or unlocking the door lock mechanism based on the verification result of the verification means.