JP2002061438A - Vehicle keyless entry system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle keyless entry system capable of audio-visually confirming the fact that a discrimination code is normally registered by an operation device connected to a control section when the discrimination code is renewed caused by trouble of a transmitter, loss or the like. SOLUTION: The vehicle keyless entry entry system includes a transmitting means 1 for transmitting a signal including an inherent discrimination code, a receiving means 2 having a circuit for receiving a signal transmitted from the transmitting means, a storage area set in the receiving means and storing the inherent discrimination code of the transmitting means included in the signal received from the transmitting means and the control section 3 for operating various operation devices by combining signals transmitted from the receiving means, and for the keyless entry system capable of renewing the discrimination code by making a specific action, and when the receiving means renews the discrimination code in the storage area by the signal from the transmitting means, the vehicle keyless entry system operates various operation devices transmitting an audiovisual signal by the signal from the control section.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a keyless entry system for a vehicle, and more particularly to a method for rewriting an identification code due to a failure or loss of a transmitter.
The present invention relates to a keyless entry system for a vehicle, which can visually and visually confirm that an identification code has been normally registered by an operating device connected to a control unit.

[0002]

2. Description of the Related Art As a keyless entry system for a vehicle, an identification code transmitted by a transmitter is received by a receiver installed on the vehicle side, collated with an identification code stored in advance, and unlocking and locking are performed in the same case. Methods for doing so are widely known. This identification code is unique to the transmitter and is stored in advance in the receiver or the control unit of the vehicle. However, when the transmitter is broken or lost, it needs to be rewritten. As a method of rewriting such an identification code, a method is known in which when a unique identification code of a transmitter is stored in a control unit, the identification code is recorded by arbitrarily setting a registration mode by a specific operation ( For example, JP 2
000-64680). In this method, the operator can be notified of the fact that the control unit is in the registration mode in an audio-visual manner by driving a separately mounted device such as a lamp or a buzzer.

[0003]

However, in the above-described prior art, since only a uniform signal is issued during the registration mode, the identification code is recorded after the operation of recording the identification code in the storage area is performed. I could not confirm that the code was recorded successfully. That is, when a series of recording operations are completed, the registration mode is terminated, and the mode is returned to the normal mode, there is no means for notifying the worker that the identification code has been recorded in the storage area.
There has been a disadvantage that whether or not the identification code has been recorded normally cannot be confirmed without actually performing an operation. Also, in some cases, the user forgets to release the mode while maintaining the registration mode.

Accordingly, the present invention provides a keyless vehicle entry system in which after an identification code has been recorded normally, an operating device connected to a control unit can visually confirm that the identification code has been recorded normally. It is an object of the present invention to provide a system and address the above problems. In the present invention, when the keyless entry system is in the registration mode, the identification code sent from the transmitter under the predetermined condition is stored in the storage area, and at the same time, the predetermined code is given by the instruction from the control unit. The operating device is operated to inform the operator that the identification code has been recorded in the storage area. As a result, it is not necessary for the operator to actually operate whether or not the identification code is normally recorded, and it is possible to prevent the operator from forgetting to cancel the registration mode.

[0005]

The technical solution adopted by the present invention is a receiving means having a transmitting means for transmitting a signal including a unique identification code, and a circuit for receiving a signal transmitted from the transmitting means. Control means for activating various operating devices by a combination of a means, a storage area provided in the receiving means for storing an identification code unique to the transmitting means included in a signal received from the transmitting means, and a signal transmitted from the receiving means. In a keyless entry system comprising a unit and performing a predetermined operation to rewrite the identification code, a signal from the control unit when the receiving unit rewrites the identification code in the storage area by a signal from the transmitting unit, A keyless entry system for a vehicle, characterized in that various operating devices that emit audiovisual signals are operated. Further, the keyless entry system for a vehicle is characterized in that a signal sent from the receiving means to the control unit to operate various operating devices is a combination signal of a lock / unlock signal. Also, the signal including the unique identification code transmitted from the transmission means is a signal combined with one of a door lock signal and an unlock signal. Further, the operation means is at least one of a door lock actuator, a room lamp, and a buzzer for preventing a key from being forgotten, and is a keyless entry system for a vehicle. Further, the keyless entry system for a vehicle is characterized in that at least one of the door lock actuator, the room lamp and the buzzer for preventing forgetting to remove the key is continuously operated in the registration mode. Further, the keyless entry system for a vehicle is characterized in that the reception mode is changed from the normal mode to the registration mode by grounding.

[0006]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a configuration diagram of a keyless entry system for a vehicle according to the present embodiment. In the figure, reference numeral 1 denotes a transmitter as a transmitting means for transmitting a signal by an operation of an operator in the same manner as a known system, and 2 denotes a receiving circuit for receiving a signal transmitted from the transmitter and a storage for storing an identification code. A receiving unit as receiving means having an area; 3, a control unit having a control circuit for controlling various operating devices based on signals transmitted from the receiving unit; 4, a registration switch for shifting to a registration mode; Is a door lock actuator constituting a motor for driving a door lock mechanism, 6 is a room lamp, 7 is a buzzer for preventing a key from being forgotten, and these components constitute a keyless entry system.

In the keyless entry system, a signal transmitted from the transmitter 1 to the receiving section 2 by a predetermined operation instructs the control section 3 to issue a lock / unlock signal of the door lock mechanism to the control section 3. A normal mode in a normal use state in which a door key is unlocked or locked by driving a door lock mechanism driving motor 5 connected to the receiving unit 2;
It has a registration mode for rewriting the identification code stored in the storage area installed therein to the unique identification code of the transmitter 1. Various methods are disclosed for the transition from the normal mode to the registration mode. In this embodiment, the registration switch 4 as a registration mode transition unit provided between the receiving unit 2 and the earth 8 is turned on. (By grounding the receiver), it is possible to shift to the registration mode. Note that the registration mode shifting means is not limited to the registration switch, and other methods can be adopted as long as the same function as the registration switch 4 can be achieved.

The relationship between input and output signals for entering the registration mode in the keyless entry system according to the above embodiment will be described with reference to a timing chart. FIG. 2 is a timing chart for registering two identification codes 11 and 12. . When the registration switch 4 provided between the receiving unit 2 and the ground 8 is turned on (connecting the connector to the ground), the receiving unit 2 simultaneously transmits the lock signal and the unlock signal as shown in FIG. Then, the mode shifts to the registration mode in which output is continued to 3. When the lock signal and the unlock signal are transmitted from the receiving unit 2 to the control unit 3 at the same time, the control unit 3 determines that the keyless entry system has entered the registration mode, and sends output signals to various operating devices. For example, if the operating device is the buzzer 7 for preventing forgetting to remove the key, an output signal is intermittently sent to the buzzer 7 for preventing forgetting to remove the key two times at a time, and the keyless entry system provides the operator with the registration mode. That you are in In addition,
The means for notifying that the user is in the registration mode is not limited to the buzzer, but may be a room lamp, a sound, a display, or the like.

When the keyless entry system is in the registration mode, when a signal of a predetermined pattern (a1, a2 in the figure) is input from the transmitter to the receiving unit, the signal of the pattern is transmitted to the receiving unit. Is correct or not (this will be described later)
Then, when it is determined that the identification code is a registerable identification code, the identification code is stored in a storage area in the receiving unit. At the same time, the unlock signal or the lock signal is turned off for a predetermined time (in the timing chart shown in FIG. 2, the unlock signal is turned off for a predetermined time t1). Upon receiving the signal that the unlock signal is turned off for a predetermined time, the control unit turns on the buzzer output for preventing key forgetting to be removed for a predetermined time (only t2 in FIG. 2), and the motor (ACT) of the door lock mechanism. , The lock and unlock signals are output continuously, and then the mode returns to the registration mode. With this output, the operator can visually and visually confirm that the identification code has been normally registered. Then, in the registration mode, the second identification code 1
Register 2. The registration of the second identification code 12 is the same as described above, and a description thereof will be omitted.

In the timing chart of FIG. 2, the "predetermined pattern" transmitted from the transmitter is used.
Are two unlock signals a issued within a predetermined time
1, a2 and the first unlock signal a1
At the same time, the first identification code is transmitted to the receiving unit simultaneously with the second unlock signal a2.

Next, an example of an identification code registration process of the keyless entry system for a vehicle will be described with reference to a flowchart shown in FIG. When the program is started and the registration switch is turned on in step S1, the keyless entry system is set to the registration mode by the signal in the receiving unit, and the receiving unit is in the state of waiting for the identification code. In this state, when the transmitter transmits the first identification code together with the first unlock signal, the first identification code is received by the receiving unit in step S2, and the second unlock signal is received in step S3. And the second identification code transmitted together with the second identification code. Proceeding to step S4, it is determined whether the first identification code and the second identification code are the same. If the two identification codes are the same, it is determined that rewriting of the identification code has been instructed, and the received identification code is stored in the storage area in step S5. At the same time as the storage of this identification code, an output to an operating device (a motor for driving a door lock mechanism, a room lamp, a buzzer for preventing forgetting to remove a key, etc.) is performed in step S6.

If the signal instructing to enter the registration mode continues in step S7, the process returns to step 2 to receive the second identification code. When the first identification code is different from the second identification code in step S4, the process returns to step S2. The registration of all the identification codes is completed, and the mode returns to the normal mode in which the registration switch is turned off.

Although the embodiment of the present invention has been described above, a lock signal may be employed instead of the above-described unlock signal, and another signal capable of achieving the same function may be employed. As a method of notifying the registration mode and the storage state of the identification code, a blinking room lamp, a voice guide, or the like can be used. Further, in the above-described embodiment, the signal indicating the registration mode is continuously transmitted during the registration mode. However, the signal may be transmitted only when transitioning from the normal mode to the registration mode. Recognition of keyless state transition and recognition of normal operation of the system become possible. Also, if you are using a navigation system,
The registration mode, the storage state of the identification code, and the like can be displayed on the display of the navigation system.
In a vehicle equipped with the failure diagnosis device, the mode transition can be displayed on the display unit of the failure diagnosis device. Furthermore, the present invention may be embodied in any other form without departing from its spirit or essential characteristics. for that reason,
The above-described embodiments are merely examples in every respect and should not be construed as limiting.

[0014]

As described above in detail, according to the present invention, in the registration mode for registering the identification code, the fact that the identification code has been normally registered is visually and visually recognized by the operating device connected to the control unit. It can be confirmed and the reliability of the work is improved. In addition, since the configuration of the existing keyless entry system is used as it is, and since the operating device uses the existing one, no new investment is required, so that it is possible to obtain excellent effects such as being advantageous in terms of price. .

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a keyless entry system to which the present invention according to an embodiment is applied.

FIG. 2 is a timing chart showing an outline of the present invention.

FIG. 3 is a flowchart illustrating an example of an identification code registration process.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Transmission means (transmitter) 2 Receiving means (reception part) 3 Control part 4 Registration switch 5 Door lock actuator 6 Room lamp 7 Keying forgetting buzzer 8 Ground

Claims (6)

[Claims] 1. A transmitting means for transmitting a signal including a unique identification code, a receiving means having a circuit for receiving a signal transmitted from the transmitting means, and a signal installed in the receiving means and received from the transmitting means. A storage area for storing an identification code unique to the transmission means included in the storage means, and a control unit for operating various operating devices by a combination of signals sent from the reception means, and performing a predetermined operation to rewrite the identification code A keyless entry system, wherein when the receiving means rewrites the identification code in the storage area by a signal from the transmitting means, a signal from the control unit activates various operating devices for emitting an audiovisual signal. Keyless entry system. 2. The keyless entry system for a vehicle according to claim 1, wherein the signal transmitted from the receiving means to the control unit to activate various operating devices is a combination signal of a lock / unlock signal. 3. The signal according to claim 1, wherein the signal including the unique identification code transmitted from the transmitting means is a signal combined with one of a door lock signal and an unlock signal. The keyless entry system for a vehicle as described in the above. 4. The apparatus according to claim 1, wherein said operating means is at least one of a door lock actuator, a room lamp, and a buzzer for preventing forgetting to remove a key. Keyless entry system for vehicles. 5. The registration mode according to claim 1, wherein at least one of a door lock actuator, a room lamp, and a buzzer for preventing a key from being forgotten is continuously operated. A keyless entry system for a vehicle as described in Crab. 6. The keyless entry system for a vehicle according to claim 1, wherein the mode is changed from the normal mode to the registration mode by grounding the receiving section.