JPH09105256A - Keyless entry system for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To securely perform the setting of registration mode by setting the registration mode on the basis of the registration requiring signal transmitted from a transmitter, besides the operation of an existing vehicle switch, and set the severe setting condition. SOLUTION: A predetermined abnormal operation of a predetermined vehicle switch is performed by a user. A predetermined operation different from a case for transmitting the door lock/unlock signal is performed by the user. Consequently, when the registration requiring signal from a transmitter 1 is received by a receiver 2, the receiver 2 side is switched to the registration mode as the first time. Namely, registration mode is set on the basis of the registration requiring signal sent from the transmitter 1, besides the operation of an existing vehicle switch. Registration mode setting condition is thereby set severe, and the registration mode can be more securely set.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle keyless entry system capable of reliably setting an ID code registration mode without error.

[0002]

2. Description of the Related Art Recently, in order to improve convenience for a user, a radio wave from a transmitter is transmitted by a remote control operation and received by a receiver, and a door lock is unlocked or locked only when an ID code is matched. The system (referred to here as a keyless entry system) adapted to perform is becoming popular. According to this system, it is not necessary to insert and remove the key to and from the door cylinder each time when getting on the vehicle, and it is very convenient especially when carrying luggage in both hands.

In such a system, the ID code is generally a registration method, so that even if the user loses the transmitter, a new transmitter can be re-registered, and the user can make a plurality of transmissions depending on the use. If the user wants to use the transmitter, additional registration of the second and subsequent transmitters is possible within the maximum registered number.

As a method of registering an ID code, it is necessary to set the receiver side to a registration mode in advance before transmitting a signal of the ID code from the transmitter. Conventionally, an existing automobile switch is used as a predetermined method. It is configured to switch to the registration mode when turned on / off in this manner (see, for example, Japanese Utility Model Laid-Open No. 5-69274).

[0005]

However, in the above-mentioned conventional registration method, the registration mode is entered only by operating the existing automobile switch, so that the registration mode is erroneously set by operating the switch. There is a risk that Since the ID code is an important element in maintaining the trust in the security of this kind of system, the registration mode that enables the registration must not be set by mistake. There is a demand for reliable and reliable operation.

The present invention has been made in view of the above problems in the method of setting the registration mode of the ID code.
It is an object of the present invention to provide a keyless entry system for a vehicle, which can more surely set an ID code registration mode without error.

[0007]

To achieve the above object, the present invention comprises a transmitter for transmitting a door lock / unlock signal together with an ID code and a receiver for receiving a signal from the transmitter. In a vehicle keyless entry system that locks / unlocks a door only when both ID codes match, a registration request signal is sent when a predetermined operation different from the case of transmitting a door lock / unlock signal is performed. Is provided in the transmitter, and a predetermined abnormal operation is performed on a predetermined existing vehicle switch, and when a registration request signal from the transmitter is received, the ID code for collation is set to the above-mentioned. The receiver is provided with means for setting a registration mode in which a new ID code can be rewritten by a signal input from the transmitter. That.

[0008] In the present invention thus configured,
The user performs a predetermined abnormal operation on a predetermined vehicle switch, and also performs a predetermined operation different from the case where the user transmits a door lock / unlock signal, which causes the receiver to request registration from the transmitter. Only when a signal is received will the receiver enter registration mode. That is, the registration mode is set by not only the operation of the existing vehicle switch but also the registration request signal transmitted from the transmitter, so that the setting condition of the registration mode becomes strict and the setting of the registration mode is performed more reliably. It will be.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a configuration example of a vehicle keyless entry system of the present invention.
Here, for simplification, the case where the door lock is unlocked and locked only by remote control operation will be described as an example. This system is roughly classified into a transmitter 1 that emits radio waves by remote control operation, a receiver 2 that receives radio waves transmitted from the transmitter 1, and a door lock mechanism 3 that locks / unlocks all vehicle doors, for example. And a lock sensor 4 for detecting the locked / unlocked state of the driver's seat side door, for example. The lock sensor 4 is interlocked with the door lock knob 5 on the driver's side, and outputs, for example, a HI signal when the door is locked (locked) and a LO signal when the door is unlocked (unlocked).

The transmitter 1 includes a transmitter 6 and an ID code output unit 7.
have. The ID code output unit 7 stores the ID code in a built-in memory (not shown), and has a function of sending the ID code to the transmission unit 6 when a predetermined switch operation is performed. The transmission unit 6 forms a predetermined signal when a predetermined switch operation is performed, and transmits the signal radio wave to the built-in antenna 6a.
It has a function to call from. Here, for example,
Only one operation switch (not shown) is provided, and when the switch is pressed once, a door lock / unlock signal including an ID code (hereinafter, simply referred to as a lock signal) is transmitted. . In addition, in the present proposal, the transmitter 1 also has a function of transmitting a registration request signal for requesting the receiver 2 to enter the registration mode, in addition to the lock signal transmitted by the above-described normal operation. Have The registration request signal is composed of a predetermined code (hereinafter referred to as a registration code), and is formed and transmitted by an operation different from the operation for transmitting the lock signal. For example, when the switch is kept pressed for a predetermined time (for example, 10 seconds), a radio wave of a registration code is transmitted.

The receiver 2 receives a radio wave transmitted from the transmitter 1, a receiving antenna 8, a receiving section 9 for signal processing (amplification, shaping, etc.) of the radio wave received by the receiving antenna 8, and system control and ID. It has a control registration unit 10 that performs a code registration process, and an ID code storage unit 11 that stores an ID code for collation. Here, for example, up to two ID codes can be registered.

Control of door lock / door unlock by the receiver 2 is performed as follows, for example. When the receiving antenna 8 receives the lock signal from the transmitter 1, the receiver 2 sends the received radio wave to the control registration unit 10 via the receiving unit 9. The control registration unit 10 collates the ID code included in the lock signal with the ID codes (maximum 2) stored in the ID code storage unit 11, and if they do not match, it does not operate, but if they match. Is lock sensor 4
A door lock (lock) signal or a door unlock (unlock) signal is output to the door lock mechanism 3 depending on the state of. Specifically, if the lock sensor 4 is in the HI (locked) state, it outputs a door unlock (unlocked) signal, and conversely, if the lock sensor 4 is in the LO (unlocked) state, it locks the door ( Lock) signal is output.

The ID code registration process for the receiver 2 is performed as follows, for example. As described above, the registration mode is used when the user loses the transmitter and newly registers the ID code of the new transmitter in the receiver, and when the user adds another transmitter ( In other words, when two transmitters can be used for one vehicle).

FIG. 2 is a flow chart showing an example of the ID code registration processing in this system. As shown in the figure, basically, a predetermined abnormal operation is performed on the existing vehicle switch (for example, the door lock knob 5), and the registration code is transmitted from the transmitter 1 by the predetermined unusual operation described above. The receiver 2 enters the registration mode only when is transmitted. Specifically, the control registration unit 10 first uses a built-in timer (not shown) and the output of the lock sensor 4 for a predetermined time (for example, 10 seconds).
Whether the output of the lock sensor 4 changes from HI to LO a predetermined number of times (for example, 6 times) within 10 seconds, that is, the user locks the door lock knob 5 within 10 seconds (locking) → unlocking the door (unlocking). It is determined whether or not the lock operation has been repeated 6 times (step S1). If the result of this determination is YES, it is determined that a predetermined abnormal operation has been performed on the existing vehicle switch, and the timer is activated (step S1). S2), a predetermined time (for example, 3
It is determined whether the registration code from the transmitter 1 is received within 0 second (step S3, step S4). Also when transmitting the registration code from the transmitter 1, an unusual operation different from the case of transmitting the lock signal is required. If the result of the determination in step S3 is YES, the registration mode is entered and the ID code can be registered (step S5).

After that, the counter N for counting the number of registrations is reset to zero (step S6), and the input of the ID code from the transmitter 1 is waited for (step S7). Transmitter 1
Since the ID code of 1 is included in the lock signal, the ID code is transmitted from the transmitter 1 at the same time by transmitting the lock signal by a normal operation. When it is determined that the ID code is input in step S7, the value of the counter N is incremented by 1 (step S8), and N =
It is determined whether or not 1, that is, whether or not the ID code is registered for the first time (step S9). If the result of this determination is YES, all the ID codes (two) currently stored in the ID code storage unit 11 are deleted (step S10), and the ID code input in step S7 is ID.
The code is stored in the code storage unit 11 and registered (step S1).
1). On the other hand, as a result of the determination in step S9, N
If it is O, the process immediately proceeds to step S11 and the I
Register the D code. In the next step S12, N = 2
It is determined whether or not the ID code is registered for the second time. This is because, in the present proposal, only a maximum of two can be registered. If the result of the determination in step S12 is NO, step S can be registered again.
Returning to step 7, if YES, it is impossible to register any more, so the process returns to step S1. In the present proposal, if there is only one transmitter 1, the same ID code will be registered.

Therefore, according to the above embodiment,
The registration mode is set not only by the operation of the existing vehicle switch (door lock knob 5) but also by the registration code transmitted from the transmitter 1. In any case, an abnormal operation is required. Becomes stricter, and the risk of accidentally entering the registration mode is reduced. Therefore, it is possible to set the registration mode more reliably.

[0017]

As described above, according to the present invention, the registration mode is set not only by operating the existing vehicle switch but also by the registration request signal transmitted from the transmitter. It becomes stricter and it becomes possible to set the registration mode more reliably.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration example of a vehicle keyless entry system of the present invention.

FIG. 2 is a flowchart showing an example of ID code registration processing.

[Explanation of symbols]

 1 ... Transmitter 2 ... Receiver 3 ... Door lock mechanism 4 ... Lock sensor 5 ... Door lock knob (vehicle switch) 6 ... Transmitter 10 ... Control registration unit

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display location E05B 65/20 E05B 65/20

Claims (1)

[Claims] 1. A transmitter (1) for transmitting a door lock / unlock signal together with an ID code, and the transmitter (1).
And a receiver (2) for receiving a signal from
In a vehicle keyless entry system that locks / unlocks a door only when the D code matches, a means for transmitting a registration request signal when a predetermined operation different from the case of transmitting a door lock / unlock signal is performed. (6) is provided in the transmitter (1), a predetermined abnormal operation is performed on a predetermined existing vehicle switch (5), and a registration request signal from the transmitter (1) is received. The receiver (2) is provided with means (10) for setting a registration mode in which a verification ID code can be rewritten to a new ID code by a signal input from the transmitter (1). Vehicle keyless entry system.