JP2001241234A - Keyless entry system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To constitute a keyless entry system by a simple add-on. SOLUTION: A receiver is composed of a reception unit 400 with a reception section 402 receiving a transmission signal containing an intrinsic identification code from an electronic key (a transmitter) 100 and a meter unit (an electrical equipment unit) 200 with a control section 201 deciding the identification code and a registration code stored in a storage section 207 when the reception unit 400 is mounted and outputting an output signal for conducting fixed operation in a driving unit (a section to be controlled) 300 when both codes coincide while controlling meters (electrical equipment) 203 for a car, and a decision section 206 for recognizing the presence of the mounting on the meter unit 200 of the reception unit 400 by the control section 201 is installed to the meter unit 200.

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 mounted on a vehicle.

[0002]

2. Description of the Related Art For example, Japanese Unexamined Patent Publication Nos. Hei 7-250383 (Prior Art 1) and Japanese Unexamined Patent Publication No. 8-332841 (Prior Art 2) disclose a wireless keyless entry system using radio waves. The transmission signal including the identification code output by the receiver is received by a receiver provided inside the vehicle, and when a control unit such as a microcomputer determines that the transmission is normal, the opening / closing operation of the door lock of the vehicle is controlled. . The receiving unit and the control unit constitute a receiver, and the control unit controls not only the keyless entry system but also other electric components of the vehicle, thereby sharing parts.

[0003]

Incidentally, these systems are premised on being incorporated into a vehicle from the beginning. For example, after purchasing a vehicle not equipped with a keyless entry system, at a later date (several years later) ) Is not considered.

For example, in the prior art document 1, it is necessary to prepare a new receiver in which the receiving unit and the control unit are incorporated, resulting in replacement work and high cost.

In the prior art document 2, although a unit having a receiving unit for a keyless entry system is provided separately, the control unit does not determine whether or not the unit is mounted. In the control unit, a microcomputer (microcomputer), a program, or the like in consideration of mounting the unit is selected from the beginning, whereby the control unit is configured to perform the operation when the unit is not mounted. Also, the wake-up is performed at regular intervals, and power consumption increases due to the use of unnecessary dark current, which imposes a burden on a power supply such as a vehicle-mounted battery.

[0006] In any of the prior art documents, in order to mount the unit, it is necessary to connect a harness between the unit and the vehicle body, and the work is complicated.

[0007]

According to the present invention, there is provided a keyless entry system comprising:
As described in, a receiving unit having a receiving unit that receives a transmission signal including a unique identification code from the transmitter, and when the receiving unit is attached, the identification code and the registration code stored in the storage unit And an electrical component unit having a control unit that outputs an output signal for causing the controlled unit to perform a predetermined operation when the two codes match and controls the electrical components of the vehicle. Further, a determination unit is provided in the electrical component unit for the control unit to recognize whether or not the receiving unit is attached to the electrical component unit.

According to a second aspect of the present invention, there is provided a receiving unit having a receiving unit for receiving a transmission signal including a unique identification code from a transmitter, and the identification code and the storage unit when the receiving unit is mounted. A control unit that outputs an output signal for causing the controlled unit to perform a predetermined operation when the registered codes match with each other and that controls the electric components of the vehicle. A receiver from the component unit, the receiving unit having an output unit for outputting the transmission signal and the mounting signal of the receiving unit to the control unit, and the electrical component unit recognizing the mounting signal. And a determination unit for the determination.

According to a third aspect of the present invention, there is provided a receiving unit having a receiving unit for receiving a transmission signal including a unique identification code from a transmitter, and an electric power to the receiving unit when the receiving unit is mounted. Controlling the supply and outputting the output signal for performing a predetermined operation in the controlled unit when the identification code and the registration code stored in the storage unit are determined and the two codes match, and An electrical component unit having a control unit for controlling electrical components of the vehicle and a receiver, the receiving unit has an output unit that outputs the transmission signal and the mounting signal of the receiving unit to the control unit, The electrical component unit is provided with a determination unit for recognizing the mounting signal.

[0010] In particular, in claims 1 to 3, as described in claim 4, the receiving unit is configured to be supplied with power from the electrical component unit.

In particular, in the first to third aspects, as described in the fifth aspect, the electrical component unit is a meter unit that displays traveling information such as a traveling speed and an engine speed.

In particular, in the first to third aspects, as described in the sixth aspect, the electric component unit and the receiving unit are connected to each other by an input / output interface of each of them to transmit power and signals.

[0013] In particular, in claims 1 to 3, as described in claim 7, the control unit confirms whether or not the receiving unit is mounted immediately after connecting a battery to a vehicle.
And / or immediately after the user turns on the ignition switch.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A receiving section 40 for receiving a transmission signal including a unique identification code from an electronic key (transmitter) 100.
Receiving unit 400 having
00, the identification code and the registration code stored in the storage unit 207 are determined, and when the two codes match, the drive unit (controlled unit) 300 performs a predetermined operation. A receiver is composed of a meter unit (electrical component unit) 200 having a control unit 201 for outputting an output signal and controlling instruments (electrical component) 203 of the vehicle.
A judging unit 206 for allowing the control unit 201 to recognize the presence / absence of attachment to 00 is provided in the meter unit 200.

Thus, a keyless entry system can be configured with a simple add-on.

A receiving unit 400 having a receiving unit 402 for receiving a transmission signal including a unique identification code from the electronic key (transmitter) 100, and the identification code and the storage unit 207 when the receiving unit 400 is mounted. The stored registration code is determined, and when the two codes match each other, an output signal for causing the drive unit (controlled section) 300 to perform a predetermined operation is output, and at the same time, instrumentation (electrical components) of the vehicle. A receiver is composed of a meter unit (electric component unit) 200 having a control unit 201 for controlling the control unit 203, and an output unit 406 that outputs the transmission signal and the mounting signal of the reception unit 400 to the control unit 201. The meter unit 200 includes a determination unit 206 for recognizing the mounting signal.

Thus, a keyless entry system can be configured with a simple add-on.

A receiving unit 400 having a receiving unit 402 for receiving a transmission signal including a unique identification code from the electronic key (transmitter) 100, and power supply to the receiving unit 402 when the receiving unit 400 is mounted. The control unit determines the identification code and the registration code stored in the storage unit 207, and outputs an output signal for causing the drive unit (controlled unit) 300 to perform a predetermined operation when the two codes match. Output and further instrument (electrical components) 2
And a meter unit (electrical component unit) 200 having a control unit 201 for controlling the control unit 03.
The meter unit 200 has an output unit 406 that outputs a mounting signal of 0 to the control unit 201, and a determination unit 206 for recognizing the mounting signal is provided in the meter unit 200.

Thus, a keyless entry system can be configured with a simple add-on.

In particular, the receiving unit 400 is configured to be supplied with power from the meter unit (electric component unit) 200.

Accordingly, the receiving unit 400 does not need to perform wiring other than the meter unit 200, and can easily perform the operation.

In particular, a meter unit (electric component unit)
Reference numeral 200 denotes a meter unit that displays traveling information such as a traveling speed and an engine speed.

As a result, the control unit 201 can be shared, and the cost can be reduced.

In particular, a meter unit (electrical component unit)
The power supply 200 and the receiving unit 400 are connected by input / output interfaces 205 and 403 of the respective devices, and power and signals are transmitted.

Thus, the connection between the meter unit 200 and the receiving unit 400 can be easily performed.

In particular, the receiving unit 4 by the control unit 201
Confirmation of the mounting of 00 is performed immediately after the battery is connected to the vehicle and / or immediately after the user turns on the ignition switch.

Thus, when the battery is connected to the vehicle and / or when the ignition switch is selected by the user to be turned on, the presence or absence of the receiving unit 400 is reliably detected as an event for confirming the mounting of the receiving unit 400. be able to.

[0028]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the embodiments shown in the accompanying drawings.

FIG. 1 relates to an embodiment of the present invention, wherein reference numeral 100 denotes an electronic key which is carried by a user (driver) and transmits a transmission signal including a predetermined identification code, which is a keyless entry. It is prepared as an optional item used only when the system is installed.

The electronic key 10 is mounted on a vehicle.
0 is a meter unit as an electrical component unit that constitutes a part of a receiver that receives the transmission signal from 0, 201 is a control unit including a microcomputer or the like that combines meter processing in instruments described later and keyless processing described later, Reference numeral 202 denotes a drive unit for driving a drive unit (controlled unit) 300 such as a door lock motor by a predetermined operation via a control unit 201 by operating a switch (not shown), and 203 denotes travel information such as a travel speed and an engine speed. (Electrical components) for displaying the power in accordance with the pointer indication of the analog instrument, and 204 is a power supply section for supplying power to each section.

The meter unit 200 is provided with an input / output interface 205 such as a connector for connecting a receiving unit 400 which is prepared in advance as an optional product and constitutes a part of the receiver.

The receiving unit 400 has a single structure (unit) housed in a case by itself, and the electronic key 1
It has a receiving unit 402 for receiving the transmission signal from 00 through an antenna 401, and the receiving unit 400 is also provided with an input / output interface 403 including a connector for connecting to the meter unit 200.

The meter unit 200 is provided with a determination unit 206 for determining whether or not the receiving unit 400 is mounted. This is the input / output interface 205
, The output terminal 206b from the control unit 201 in the input / output interface 205, the input terminal 206c to the control unit 201 in the input / output interface 205, the ground terminal 206d in the input / output interface 205, the control unit 2
01 is connected to a pull-up resistor 206e. The power supply terminal 206a is set to a constant potential, for example, 5 volts, by the power supply unit 204, and is connected to the ground terminal 20a.
6d is an earth (ground) level.

The input / output interface 403 of the receiving unit 400 has a power terminal 404a connected to the power terminal 206a and an input terminal 404 connected to the output terminal 206b.
b, an output terminal 404c connected to the input terminal 206c, and a ground terminal 404d connected to the ground terminal 206d. Based on an instruction from the control unit 201 sent via the input terminal 404b, the power of the power supply unit 204 is supplied via the power supply terminal 404a. Switch section 40 for supplying or shutting off to receiving section 402
5 and the output unit 404c informs the control unit 201 of the mounting of the receiving unit 400 as a mounting signal, and the electronic key 100 received by the receiving unit 402 when the receiving unit 400 is mounted on the meter unit 200.
And an output unit 406 composed of a circuit component such as an AND element for transmitting the transmission signal from the control unit 201 to the control unit 201.

When the receiving unit 400 is not mounted, the input terminal 206c is at "high level" by the pull-up resistor 206e, and this is sent to the control unit 201. At this time, the output terminal 206b is at “low level” according to an instruction from the control unit 201.

When the receiving unit 400 is mounted, the output of the output unit 406 is output terminal 206b = input terminal 404.
b = Low level in response to the low level. This value is sent to the control unit 201 via the output terminal 404c = the input terminal 206c, so that the control unit 201 recognizes that the receiving unit 400 is attached.

Thereafter, the control unit 201 wakes up at regular time intervals, sets the output terminal 206b to "high level", and switches the switch unit 4 during this "high level".
06 is turned on, the power from the power supply unit 204 is supplied to the receiving unit 402, and the signal from the receiving unit 402 is output to the output unit 4.
06 to the output terminal 404c to the input terminal 206c.

The subsequent operation of the control unit 201 determines the identification code received by the receiving unit 402 and the registration code stored in the storage unit 207 and determines the two codes, as in a general keyless entry system. When they match, an output signal for causing the drive unit 300 to perform a predetermined operation is output.

The receiving unit 4 by the control unit 201
The mounting of 00 is performed in an event such as immediately after a battery (not shown) is connected to the vehicle or immediately after the user selects the ignition switch to be turned on. These events are set in a program stored in the control unit 201. ing.

According to such a system, the control unit 201 determines attachment of the receiving unit 400 by simply adding on the optional receiving unit 400 to the meter unit 200, and thereafter, the control unit 201 and the meter unit 200 are connected. A receiver is constituted by the receiving unit 400 and the electronic key 1
By detecting the transmission signal from 00, the opening / closing operation of the door lock of the vehicle can be remotely controlled.

In the above embodiment, the keyless entry system using radio waves has been described as an example. However, it is needless to say that a system using infrared rays can be similarly applied.

[0042]

According to the present invention, a keyless entry system can be configured with a simple add-on.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating the configuration of an embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 electronic key (transmitter) 200 meter unit (electrical component unit, receiver) 201 control unit 202 driving unit 203 instrument (electrical component) 204 power supply unit 205 input / output interface 206 determining unit 207 storage unit 300 driving unit (controlled) Unit) 400 receiving unit (receiver) 401 antenna 402 RF receiving unit (receiving unit) 403 input / output interface 405 switch unit 406 output unit

Claims (7)

[Claims] 1. A receiving unit having a receiving unit for receiving a transmission signal including a unique identification code from a transmitter, the identification code when the receiving unit is attached, and a registration code stored in a storage unit. And an electrical component unit having a control unit that outputs an output signal for causing the controlled unit to perform a predetermined operation when the two codes match and controls the electrical components of the vehicle. A keyless entry system, wherein a determination unit for allowing the control unit to recognize whether the receiving unit is attached to the electrical component unit is provided in the electrical component unit. 2. A receiving unit having a receiving unit for receiving a transmission signal including a unique identification code from a transmitter, and when the receiving unit is mounted, the identification code and a registration code stored in a storage unit. And an electrical component unit having a control unit that outputs an output signal for causing the controlled unit to perform a predetermined operation when the two codes match and controls the electrical components of the vehicle. The receiving unit has an output unit that outputs the transmission signal and the mounting signal of the receiving unit to the control unit, and the electrical component unit includes a determination unit for recognizing the mounting signal. Keyless entry system characterized by: 3. A receiving unit having a receiving unit for receiving a transmission signal including a unique identification code from a transmitter, and controlling the power supply to the receiving unit when the receiving unit is attached and controlling the identification code. And a registration code stored in the storage unit, and when the two codes match each other, outputs an output signal for causing the controlled unit to perform a predetermined operation, and further controls electric components of the vehicle. A receiver comprising the electrical component unit having a unit, the receiving unit having an output unit for outputting the transmission signal and the mounting signal of the receiving unit to the control unit, and the electrical component unit having the mounting unit. A keyless entry system comprising a determination unit for recognizing a signal. 4. The keyless entry system according to claim 1, wherein the receiving unit is configured to be supplied with power from the electrical component unit. 5. The keyless entry system according to claim 1, wherein the electrical component unit is a meter unit that displays running information such as a running speed and an engine speed. 6. The electric equipment unit according to claim 1, wherein the electric component unit and the receiving unit are connected to each other by an input / output interface of the electric component unit to transmit power and a signal. Keyless entry system. 7. The control unit ascertains whether the receiving unit is mounted or not, immediately after connecting a battery to a vehicle and / or immediately after a user selects an ignition switch to be turned on. The keyless entry system according to any one of claims 1 to 3.