JPH11348731A - Keyless entry system for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable answer back operation only in a vehicle which needs confirmation of the lock state of a door lock mechanism with a command from a portable transmitter at the time when the door lock mechanism of a plurality of vehicles is constituted capably of operation with a signal form the same portable transmitter. SOLUTION: A receiving device 5 puts out a lock operation command LOCK of a door lock mechanism 8 to a door lock control relay 11 only if an ID code in a lock signal Son from a portable transmitter 1 coincides with the ID code stored in advance when the signal Son is received. The receiving device 5 executes an answer back operation that a horn 12 is sounded for a predetermined time when the lock signal Son is received again within a predetermined time (3 seconds) after it received the lock signal Son on the assumption that switching to the lock state of the door lock mechanism 8 is detected by a position detecting switch 9 after starting to receive the lock signal Son, whereby the lock operation of the door lock mechanism 8 is notified.

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 configured to perform a locking operation and an unlocking operation of a door lock mechanism by a signal transmitted from a portable transmitter.

[0002]

2. Description of the Related Art Conventionally, as an example of a keyless entry system for an automobile, a portable transmitter capable of selectively transmitting a lock signal and an unlock signal including a unique ID code is provided. When receiving the lock signal and the unlock signal from the portable transmitter, the ID code in the received signal is compared with the ID code stored in advance, and only when the two match, the locking operation and unlocking of the door lock mechanism are performed. There is provided a configuration in which a receiving device that selectively performs a locking operation is provided.

[0003] In this case, conventionally, the user is notified of the fact that the door has been locked, thereby improving security and enhancing the sense of security of the user. Specifically, when the lock signal is received again within a fixed time (for example, about 3 seconds) after the lock signal is received (that is, the lock signal transmission operation is performed on the portable transmitter side for a fixed time). In some cases, an answerback function is provided in which the horn for the vehicle is operated in response to the second reception of the lock signal.

[0004]

In recent years, more and more homes have more than one car. In such a home or an office that uses a plurality of cars, a single mobile phone is used. In some cases, it is required to construct a system that can simultaneously operate door lock mechanisms of a plurality of automobiles by the type transmitter. Conventionally, in order to satisfy such demands, a receiving device provided on an automobile side includes:
By providing an ID code registration function capable of storing a plurality of ID codes, it is possible to respond to a lock signal and an unlock signal from a portable transmitter attached to another vehicle (that is, a portable transmitter which originally does not respond). Such a configuration has been made.

[0005] However, in such a configuration, when a plurality of automobiles registered with the same ID code are parked close to each other and the ansabaack function is operated, the plurality of automobiles are not allowed. The horns of two cars will be operated simultaneously. For this reason, it is difficult to confirm whether or not the door lock mechanism of the target automobile is locked indeed, which may lead to a decrease in security, and there is no point in providing the answer back function. Dots come out.

The present invention has been made in view of the above circumstances, and an object of the present invention is to enable a door lock mechanism of a plurality of vehicles to be operated by a signal from the same portable transmitter. Meanwhile, according to a command from the portable transmitter, the answer back operation is performed only in the vehicle that needs to confirm the lock state of the door lock mechanism, and it is determined whether or not the lock operation has been performed. An object of the present invention is to provide a keyless entry system for a vehicle that can be performed reliably.

[0007]

According to the first aspect of the present invention,
In order to achieve the above object, a portable transmitter capable of selectively transmitting a lock signal and an unlock signal including a preset ID code through an airborne signal as a medium, and a lock signal and an unlock signal on a vehicle side. A signal is provided so as to be receivable, and when an ID code in the received signal matches an ID code stored in advance, one of a lock operation command and an unlock operation command of the door lock mechanism is issued according to the type of the received signal. A function of performing an answer-back operation for notifying, via voice output means, that the locking operation of the door lock mechanism has been performed, and an ID capable of storing a plurality of ID codes. A keyless entry system for a vehicle provided with a code registration function, wherein operation detection means for detecting a state of the door lock mechanism is provided; After receiving the lock signal, when the receiving device receives the lock signal again within a predetermined time after receiving the lock signal, or when the lock signal is received continuously for a set time or more, And the answer back operation is performed on the premise that the operation detecting means detects that the door lock mechanism is switched to the locked state.

According to such a configuration, since a plurality of ID codes can be stored in the receiving device side, the ID set to the specific portable transmitter is set to each of the receiving devices provided in a plurality of vehicles. If the same code is stored, the lock signal or the unlock signal is transmitted from the portable transmitter so that the lock operation and the unlock operation of the door lock mechanisms of the plurality of vehicles can be simultaneously performed. become.

In this case, when the lock signal transmission operation is performed twice or more within the fixed time on the portable transmitter side, or when the lock signal transmission operation is continued for the set time or more, the reception of the lock signal is performed. An answerback operation of notifying that the lock operation of the door lock mechanism has been performed on the assumption that the operation detection unit has detected the switching of the door lock mechanism to the locked state after the start of receiving the lock signal. Through the audio output means. Therefore, such an answer-back operation is performed only in a vehicle in which the door lock mechanism is actually switched to the locked state in response to the transmission operation of the lock signal (that is, a vehicle requiring the answer-back operation). As a result, even if a plurality of vehicles registered with the same ID code are parked close to each other, whether or not the locking operation of the door lock mechanism of the target vehicle has been performed. Can be surely performed, thereby improving security.

According to a second aspect of the present invention, there is provided a keyless entry system for a vehicle having the same prerequisite configuration as the first aspect of the present invention, for detecting the state in which a driver gets off a vehicle. When the receiving device receives the lock signal again within a predetermined time after receiving the lock signal, or when the lock signal is continuously received for a set time or more, The answerback operation is performed on the premise that the getting-off detection means detects that the driver gets off the vehicle within a time period which is a predetermined time from the reception start time.

[0011] Even in such a configuration, by transmitting the lock signal or the unlock signal from the portable transmitter, the lock operation and the unlock operation of the door lock mechanisms of a plurality of vehicles can be performed simultaneously.

[0012] In this case, if the operation of transmitting the lock signal is performed twice or more within the fixed time on the portable transmitter side, or if the operation of transmitting the lock signal is continued for the set time or more, the reception of the lock signal is performed. The device informs that the lock operation of the door lock mechanism has been performed on the premise that the getting-off detection means has detected the getting-off of the driver within a time period that is a predetermined time from the reception start time. The answerback operation is performed through the audio output means. Therefore, such an answer-back operation is performed only in a vehicle (that is, a vehicle that requires an answer-back operation) from which the driver (operator of the portable transmitter) gets off. Even if a plurality of vehicles registered with the ID code are parked close to each other, it is possible to reliably confirm whether or not the lock operation of the door lock mechanism of the target vehicle has been performed. , So that security can be improved.

At this time, as in the third aspect of the present invention,
When the getting-off detection means is a door courtesy switch that is linked to the opening and closing of the driver's door, an existing switch can be used to perform the above-described selective answerback operation, and thus the overall structure is complicated. Can be prevented beforehand.

According to a fourth aspect of the present invention, the getting-off detecting means may be constituted by a driver detecting means provided to detect the presence or absence of a driver in the vehicle compartment. Since it is possible to reliably detect the driver getting off, it is possible to prevent a situation in which the answerback operation described above is performed by mistake.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First Embodiment A first embodiment of the present invention will be described below with reference to FIGS. FIG. 1 shows a schematic configuration of a keyless entry system for a vehicle by a combination of functional blocks. In FIG. 1, a portable transmitter 1 carried by a user (driver of an automobile) is of a key holder type using a built-in battery as a power source, and a lock switch 2 is provided.
And an unlock switch 3. During each period when the switches 2 and 3 are operated, the lock signal Son and the unlock signal Soff are transmitted as radio signals (airborne signals) through the antenna 4. ing. In this case, the lock signal Son and the unlock signal Soff are in a state including a type code indicating their type and a preset ID code.

The receiving device 5 mounted on the vehicle side includes a microcomputer (not shown) as a control element, and the lock signal Son and the unlock signal S
off to a predetermined reception range (for example, a radius of several meters)
Is provided so as to be receivable via an antenna 5a, and its power is supplied from a vehicle-mounted battery (not shown). In this case, the receiving device 5 stores the same original ID code as the ID code of the portable transmitter 1 for the vehicle in advance, and stores a plurality of additional ID codes in addition to the original ID code. It can be stored through the code registration device 6. That is, the receiving device 5 is provided with an ID code registration function capable of storing a plurality of ID codes.

The receiving device 5 is provided with a signal from the switch signal input circuit 7. In this case, the switch signal input circuit 7 is provided in each door of the automobile when the position detection switch 9 (corresponding to the operation detection means in the present invention) for detecting the operation state of the door lock mechanism 8 is turned on. In a state where the door courtesy switch 10 of a known configuration is turned on, and in a state where a key remind switch and an ignition switch (not shown) are operated, respectively, a switch signal is generated and the receiving device 5 is generated.
Is provided. Here, the position detection switch 9 is configured to be turned off when the door lock mechanism 8 is in an unlocked state and turned on when the door lock mechanism 8 is in a locked state. The door lock mechanism 8 uses, for example, a motor as a drive source, and is configured to perform a lock operation and an unlock operation in accordance with forward / reverse energization.

Although only one door lock mechanism 8 is shown in FIG. 1 for convenience of explanation, a plurality of door lock mechanisms 8 are actually provided corresponding to each door, and a position detection accompanying the door lock mechanism 8 is provided. A plurality of switches 9 are also provided.

When receiving the lock signal Son and the unlock signal Soff, the receiver 5 issues a lock operation command LOC to the door lock control relay 11 in each case.
K and the unlock operation command UNLOCK are selectively given to control the lock operation and the unlock operation of the door lock mechanism 8 through the door lock control relay 11. The horn 12 (corresponding to the audio output means in the present invention) can be controlled through a drive circuit 13 including a horn relay. When the drive circuit 13 receives a drive command from the receiving device 5, the drive circuit 13 keeps the horn 12 for a predetermined time (for example, a relatively short time of 1 second or less).
Only the energization drive is performed.

In the case of the above configuration, the receiving device 5 can store an additional ID code in addition to the original ID code. ID set for a specific portable transmitter 1
If the additional ID code same as the code is stored, the lock signal Son or the unlock signal Soff is transmitted from the portable transmitter 1 to lock and unlock the door lock mechanisms 8 of the plurality of automobiles. The operations can be performed simultaneously.

FIG. 2 shows the program contents of a part related to the gist of the present invention out of the contents of control by the microcomputer of the receiving device 5, which will be described below together with related operations.

In FIG. 2, a receiving device 5 first receives a received signal through an antenna 5a, and outputs a lock signal Son or an unlock signal Soff from the input signal.
The type code and the ID code corresponding to are read (steps S1 and S2).

Next, it is determined whether or not the read data contains the same ID code as the ID code stored in advance (step S3). At this time, if there is no ID code, the process returns to step S1, but if there is an ID code, that is, a portable type in which the same ID code as an ID code (original ID code, additional ID code) registered in advance is set. When the lock signal Son or the unlock signal Soff is received from the transmitter 1, the setting state of the lock flag LKF and the unlock flag ULF is determined (step S4). As will be apparent from the following description, the lock flag LKF is an action flag that is set to “1” when the door lock mechanism 8 is locked, and the unlock flag ULF is a door lock. "1" when unlocking mechanism 8
Is an action flag set to.

When neither the lock flag LKF nor the unlock flag ULF is set, it is determined whether or not the answer back flag ASF is set to "1" (step S5). The answer back flag ASF is a state flag that is set to "1" in a state where an answer back function described later is activated.

When the answer back flag ASF is not set, it is determined whether the received signal is the lock signal Son or the unlock signal Soff based on the type code read in step S2 (step S6). S7).

If it is determined that the received signal is the lock signal Son ("YES" in step S6), it is determined whether or not the operation precondition for the door lock mechanism 8 is satisfied (step S8). In this case, for example, it is assumed that the door of the automobile is closed and that the ignition key is not inserted into the key hole for the ignition switch (this can be determined by a signal from the switch signal input circuit 7). I have. However, other conditions can be included in the operation preconditions.

If the operation precondition is not satisfied,
After executing an output control routine S23 to be described later for controlling the operation of the door lock mechanism 8, the process returns to the step S1. If the output control routine S23 is established, an answer back timer for obtaining a timer time for the answer back function is established. Is determined whether or not the timer time ΔT is zero (step S
9).

Here, in the output control routine S23, the lock operation of the door lock mechanism 8 is executed by giving a lock operation command LOCK to the door lock control relay 11 when the lock flag LKF is set. A timer operation of an output timer for determining the drive time (time required to complete the lock operation or the unlock operation of the door lock mechanism 8), and the unlock flag ULF is set. When the unlock flag ULF is set, the door lock control relay 11
The unlock operation of the door lock mechanism 8 is executed by giving the unlock operation command UNLOCK to the
The output timer is configured to execute a timer operation.

If "YES" is determined in step S9, the lock flag LKF is set to "1" in step S10, and the timer operation time ΔT of the answer back timer is set to a fixed time (for example, 3 seconds). After sequentially executing step S11, the process proceeds to the output control routine S23.

On the other hand, if "NO" is determined in the step S9, after executing the step S12 for resetting the timer operation time ΔT of the answer back timer,
During the timer operation period of the answering timer, it is determined whether or not the door lock mechanism 8 has been switched from the unlocked state to the locked state based on the switch signal from the position detection switch 9 (step S1).
3).

If "NO" is determined in the step S13, the process proceeds to the output control routine S23 after executing the step S15 for setting the lock flag LKF to "1". Sets the answer back flag ASF to 1 "1" in step S1.
After sequentially executing Step 4 and Step S15, the process proceeds to the output control routine S23.

In short, in the state where the operation precondition of the lock mechanism 8 is satisfied, when the lock signal Son is first received, only the lock flag LKF is set. When the lock signal Son is received again within the set time (3 seconds), the lock flag LKF is set and the position detection switch 9 detects that the door lock mechanism 8 has switched to the locked state within the fixed time. , The answerback flag ASF is also set.

On the other hand, if it is determined that the received signal is the unlock signal Soff ("YES" in step S7), it is determined whether the above-described operation preconditions of the door lock mechanism 8 are satisfied (step S7). Step S16) If the operation precondition is not satisfied, the output control routine S23
Is returned to step S1 after the execution of step S17. However, if the condition is satisfied, step S17 for setting the unlock flag ULF to "1" is executed, and then the output control routine S1 is executed.
Move to 23.

In short, when the operation precondition of the door lock mechanism 8 is satisfied, the unlock signal Soff
Is received, the unlock flag ULF is set immediately. In step S7, "N
If "O" is determined, the output control routine S
After executing step 23, the process returns to step S1.

If "YES" is determined in step S4, that is, if either the lock flag LKF or the unlock flag ULF has been set, the above-described operation for determining the drive time of the door lock mechanism 8 is performed. It is determined whether or not the output timer (timer operation is performed in the output control routine S23) has timed out (step S18).

A state in which the output timer has not timed out (corresponding to a state in which the time required for completing the operation when the lock operation or unlock operation of the door lock mechanism 8 has been started has not elapsed). Then, the process proceeds to the output control routine S23.
After executing step S19 of resetting the lock flag LKF and the unlock flag ULF to “0”,
It is determined whether the answer back flag ASF is set to "1" (step S20).

If the answer back flag ASF has not been set, the process proceeds to the output control routine S23. If the answer back flag ASF has been set, a step S21 for performing a notification operation for the answer back function is executed. Step S21 for this notification operation is “YE” in step S5.
S "(when the answerback flag ASF is set to" 1 "), the horn 12 is given a drive command to the drive circuit 13 to cause the horn 12 to move for a predetermined short time. Let it ring. And
After the execution of step S21, step S22 for resetting the answer back flag ASF to “0” is sequentially executed, and then the process proceeds to the output control routine S23.

Hereinafter, the operation and effect obtained by performing the above-described control will be described with reference to the timing chart of FIG. FIG. 3 shows a position detection switch 9 in two automobiles A and B having the receiving device 5 in which the same ID code is registered.
The on / off state (corresponding to the locked state and unlocked state of the door lock mechanism 8), the output state of the lock operation command LOCK, and the drive state of the horn 12 are associated with the reception timing of the lock signal Son from the portable transmitter 1. Shown.

That is, in a state where the cars A and B are parked near each other, the driver getting off the car A outputs the lock signal Son through the portable transmitter 1.
Is transmitted twice within a fixed time (3 seconds corresponding to the timer time ΔT set in the answer-back timer). It is assumed that the vehicle B has the door lock mechanism 8 already locked.

In this case, as shown in FIG.
First receives the lock signal Son from the portable transmitter 1 (timing t1), the lock flag LKF is set, so that the output control routine S23 is performed.
In this case, the lock operation command LOCK is given to the door lock control relay 11 for a predetermined drive time (the time set in the output timer).

At this time, the vehicle A to be locked by the portable transmitter 1 is in a state immediately after the driver gets off the vehicle, and the door lock mechanism 8 is in the unlocked state. While the position detection switch 9 on the A side is in an on state, the position detection switch 9 on the automobile B is in an off state.
Therefore, when the lock operation command LOCK is given as described above, only the door lock mechanism 8 of the vehicle A is switched from the unlocked state to the locked state. The position detection switch 9 changes from the off state to the on state (timing t2 in FIG. 2).

After such a lock operation is performed, the timer time .DELTA.T (3) set in the answer back timer from the timing t1 when the lock signal Son is first received.
When the lock signal Son is received again before the time (seconds) elapses (timing t3 in FIG. 3), the vehicle A on which the door lock mechanism 8 has been switched from the unlocked state to the locked state as described above. Since "YES" is determined in step S13, both the lock flag LKF and the answer back flag ASF are set. On the other hand, on the side of the automobile B, "NO" is determined in step S13, so that only the lock flag LKF is set. Therefore, only at the vehicle A side, the step S20 is executed and the horn 12 is sounded. Note that the timer operation of the answer back timer is performed at step S1 when the lock signal Son is received again.
2 is stopped in response to the execution.

In short, when the transmitting operation of the lock signal Son is performed twice within the fixed time (3 seconds) on the portable transmitter 1, the receiving device 5 which has received the lock signal Son starts receiving the lock signal. The locking operation of the door lock mechanism 8 is performed on the assumption that the position detection switch 9 is switched from the OFF state to the ON state later, that is, the switching of the door lock mechanism 8 from the unlocked state to the locked state is detected. An answerback operation of notifying that the operation has been performed is performed through the horn 12. Therefore, such an answer-back operation is performed only in the vehicle in which the door lock mechanism 8 is actually switched to the locked state in response to the transmission operation of the lock signal Son (that is, the vehicle A that requires the answer-back operation). As a result, even if a plurality of automobiles registered with the same ID code are parked close to each other, the target automobile (automobile A in the example of FIG. 3) can be obtained. It is possible to surely confirm whether or not the lock operation of the door lock mechanism 8 has been performed, and thus it is possible to realize an improvement in security.

(Second Embodiment) FIGS. 4 to 6 show a second embodiment of the present invention. Hereinafter, only portions different from the first embodiment will be described. That is,
In this embodiment, as shown in FIG. 4 showing a schematic configuration of a keyless entry system for an automobile by a combination of functional blocks, a position detection switch 9 as an operation detecting means provided in the first embodiment is provided. This is an example in which the door courtesy switch 10 is used as a getting-off detection unit instead.

In FIG. 5, which shows the program contents of the main part of the contents of control by the microcomputer of the receiving device 5, in the present embodiment, if "NO" is determined in step S9, the timer operation time of the answer back timer ΔT
After the execution of step S12 for resetting the lock signal Son, whether the door courtesy switch 10 has been turned on or off within a time that has been advanced by a predetermined time τ (for example, about several tens of seconds) from the start of reception of the lock signal Son (that is, if the driver Step S13 'is performed to determine whether or not the operation has been performed. And
If "NO" is determined in the step S13 ', the process proceeds to the output control routine S23 after executing the step S15 for setting the lock flag LKF to "1". After sequentially executing step S14 for setting the answer back flag ASF to 1 "1" and step S15, the process proceeds to the output control routine S23.

The operation and effect of such a configuration will be described with reference to the timing chart of FIG. FIG. 6 shows the door courtesy switch 10 on / off state and the lock operation command LOCK in two automobiles A and B having the receiving device 5 in which the same ID code is registered.
The output state of the horn 12 and the driving state of the horn 12
Is shown in association with the reception timing of the lock signal Son.

That is, in a state where the cars A and B are parked near each other, the driver getting off the car A outputs the lock signal Son through the portable transmitter 1.
Is transmitted twice within a fixed time (3 seconds corresponding to the timer time ΔT of the answer-back timer). It is assumed that the vehicle B has the door lock mechanism 8 already locked.

In this case, as shown in FIG.
First receives the lock signal Son from the portable transmitter 1 (timing t1), the lock flag LKF is set, so that the output control routine S23 is performed.
In this case, the lock operation command LOCK is given to the door lock control relay 11 for a predetermined drive time (the time set in the output timer).

At this time, since the vehicle A to be locked by the portable transmitter 1 is in a state immediately after the driver gets off the vehicle, a predetermined time has elapsed since the start of receiving the lock signal Son (timing t1). The door courtesy switch 10 has been turned on and off within the time that has elapsed by the time τ. Therefore, “YES” is determined in the step S13 ′, and the lock flag LKF and answer back flag ASF are determined.
Are set. On the other hand, on the side of the automobile B in which the door is not opened or closed, since the determination in step S13 'is "NO", only the lock flag LKF is set. For this reason,
Only at the side of the car A, the step S20 is executed and the horn 12 is sounded.

In short, when the transmitting operation of the lock signal Son is performed twice within the fixed time (3 seconds) on the portable transmitter 1 side, the receiving device 5 receiving the lock signal Son transmits the lock signal Son.
The lock operation of the door lock mechanism 8 was performed on the assumption that the door courtesy switch 10 was turned on and off (the driver got off the vehicle) within a period of time τ from the start of reception of on. An answerback operation of notifying the user is performed through the horn 12. Therefore, such an answer-back operation is performed only in the vehicle immediately after the driver gets off (that is, the vehicle A requiring the answer-back operation). As a result, the same ID code is registered. Even if a plurality of vehicles are parked close to each other, it is determined whether or not the door lock mechanism 8 of the target vehicle (the vehicle A in the example of FIG. 6) has been locked. Can be surely performed, thereby improving security. Further, since the existing door courtesy switch 10 can be used for performing the above-described selective answer back operation, it is possible to prevent the overall structure from becoming complicated.

(Other Embodiments) The present invention is not limited to the above-described embodiment, but can be expanded or modified as described below. In each of the above embodiments,
The answerback function through the horn 12 is
Within a fixed time (3 seconds) after receiving on, the lock signal Son
Is activated when re-received, but the answer-back function may be activated when the lock signal Son is continuously received for a set time (for example, 1.5 seconds) or more.

The drop-off detection means in the second embodiment is not limited to the door courtesy switch, but may be a driver detection means (for example, a seat switch, a photoelectric switch, an ultrasonic sensor, An electric sensor may be used. When such a configuration is adopted, the detection operation of the driver getting off the vehicle can be performed more reliably than when the door courtesy switch is used as the getting off detection means. Can be prevented beforehand.

[0053]

As is apparent from the above description, according to the first aspect of the present invention, a receiving apparatus for receiving a lock signal from a portable transmitter can be operated within a predetermined time after receiving the lock signal. When the lock signal is received again or when the lock signal is continuously received for a set time or longer, it is assumed that the operation detecting means detects the switching of the door lock mechanism to the locked state after the start of receiving the lock signal. Since the answer back operation is performed at the same time, even when the door lock mechanisms of a plurality of vehicles can be operated by a signal from the same portable transmitter, a command from the portable transmitter is required. As a result, the answer back operation is performed only in the vehicle that needs to confirm the lock state of the door lock mechanism, and it is surely confirmed whether the lock operation has been performed. Get as to become.

According to the second aspect of the present invention, the receiving apparatus for receiving the lock signal from the portable transmitter is re-received within a predetermined time after receiving the lock signal, or When a lock signal is continuously received for a set time or more, only after a predetermined time has elapsed since the start of the reception of the lock signal, it is assumed that the operation detecting means has detected the switching of the door lock mechanism to the locked state. Since the answer back operation is performed on the premise that the getting-off detection means detects the driver's getting-off within the retroactive time, the door lock mechanism of a plurality of vehicles is received by a signal from the same portable transmitter. Even if the configuration is operable, the answerback operation can be performed only by the vehicle that needs to confirm the lock state of the door lock mechanism by a command from the portable transmitter. So divided, so can confirm whether the lock operation is performed reliably.

According to the third aspect of the present invention, since the existing door b courtesy switch can be used as the alighting detection means as described above, it is possible to prevent a situation in which the entire structure becomes complicated.

According to the fourth aspect of the present invention, since the driver detecting means provided to detect the presence or absence of a driver in the vehicle compartment is used as the getting off detecting means, the driver getting off the vehicle can be used. As a result, the answerback operation can be prevented from being performed erroneously.

[Brief description of the drawings]

FIG. 1 is a functional block diagram schematically showing an overall configuration of a first embodiment of the present invention.

FIG. 2 is a flowchart showing control contents by a receiving device.

FIG. 3 is a timing chart for explaining the operation.

FIG. 4 is a view corresponding to FIG. 1 showing a second embodiment of the present invention.

FIG. 5 is a diagram corresponding to FIG. 2;

FIG. 6 is a diagram corresponding to FIG. 3;

[Explanation of symbols]

1 is a portable transmitter, 2 is a lock switch, 3 is an unlock switch, 5 is a receiving device, 8 is a door lock mechanism, 9 is a position detection switch (operation detection means), 10 is a door courtesy switch (get off detection means), 12 Indicates a horn (voice output means).

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Hisami Kato 1 Noda, Toyota-ji, Oguchi-machi, Oguchi-machi, Niwa-gun, Aichi Prefecture Inside Tokai Rika Electric Works, Ltd. Noda No. 1 Tokai Rika Electric Works, Ltd.

Claims (4)

[Claims] 1. A portable transmitter capable of selectively transmitting a lock signal and an unlock signal including a preset ID code through an airborne signal as a medium, and receiving the lock signal and the unlock signal on a vehicle side. The ID code in the received signal is stored in the
A receiving device that outputs either a lock operation command or an unlock operation command for the door lock mechanism according to the type of the received signal when the D code matches, and the door lock mechanism is provided on the receiving device side. A keyless entry system for a vehicle provided with a function of performing an answer-back operation for notifying that the lock operation has been performed through a voice output unit and an ID code registration function capable of storing a plurality of ID codes. Providing an operation detecting means for detecting the state of the mechanism, the receiving device, when the lock signal is received again within a certain time after receiving the lock signal, or when the lock signal is continuously received for a set time or more After the start of receiving the lock signal, that the operation detecting means detects that the door lock mechanism has switched to the locked state. Hisage, the keyless entry system, characterized in that it is configured to perform the answer-back operation. 2. A portable transmitter capable of selectively transmitting a lock signal and an unlock signal including a preset ID code using an airborne signal as a medium, and receiving the lock signal and the unlock signal on a vehicle side. The ID code in the received signal is stored in the
A receiving device that outputs either a lock operation command or an unlock operation command for the door lock mechanism according to the type of the received signal when the D code matches, and the door lock mechanism is provided on the receiving device side. A keyless entry system for a vehicle provided with a function of performing an answer back operation for notifying that the lock operation has been performed through a voice output means and an ID code registration function capable of storing a plurality of ID codes. Providing a get-off detection means for detecting a state in which the person got off the vehicle, the receiving device receives a lock signal again within a predetermined time after receiving the lock signal, or continuously receives the lock signal for a set time or more. At the time, on the premise that the getting-off detection means has detected that the driver has got off the vehicle within a time period that is a predetermined time from the reception start time, Keyless entry system, characterized by being configured to perform Nsabakku operation. 3. The keyless entry system for a vehicle according to claim 2, wherein said getting-off detection means is a door courtesy switch interlocked with opening and closing of a driver's door. 4. The keyless entry system for a vehicle according to claim 2, wherein said getting-off detection means is a driver detection means provided to detect the presence or absence of a driver in a vehicle compartment.