JP3643145B2 - Remote control system for vehicles - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle remote control system in which a transmission / reception unit mounted on a vehicle receives a signal transmitted from a portable remote controller and performs a notification operation of a notification unit.
[0002]
[Problems to be solved by the invention]
Conventionally, a vehicle is provided with a function of performing communication between a portable transmitter and a receiver provided in the vehicle and controlling an appropriate control mechanism based on the communication information. ing.
[0003]
In this case, for example, even if the transmitter is provided integrally with the key and the user forgets to lock the door when getting off (unlocked state), communication between the transmitter and the receiver is possible. Since the strength of the received signal is attenuated according to the distance the user carries the key and away from the vehicle, the door lock mechanism is automatically driven when the strength of the received signal is attenuated to a predetermined level. It is supposed to be.
[0004]
By the way, in this thing, there exists a possibility that a transmitter may be misplaced in the vehicle, and the countermeasure is awaited.
The present invention has been made in view of the above circumstances, and an object thereof is to provide an appropriate control mechanism based on communication information performed between a portable remote controller and transmission / reception means provided in a vehicle. An object of the present invention is to provide a vehicle remote control system capable of promptly notifying a user of misplacement of a remote controller in a configuration having a function to control.
[0005]
[Means for Solving the Problems]
The remote control system for a vehicle of the present invention comprises a remote control device that is portable and wirelessly transmits a specific code signal, and a transmission / reception means that is provided in a vehicle and capable of communicating with the remote control device, In accordance with communication information between the communication device and the transmission / reception means, an open / close detection means for detecting opening / closing of a vehicle door, an informing means, and an opening / closing detection means for opening the door. When the door is unlocked when a change from to closed is detected , a specific code signal is transmitted from the remote controller, and the door is locked when the transmission / reception means recognizes the reception of the specific code signal. together is, to retransmit the specific code signal from the remote controller when the predetermined time by locking the door has elapsed, the transmission and reception means of the specific code signal In which the notification means is configured to include a control means for informing operation when it recognizes the signal.
[0006]
In the vehicle remote control system configured as described above, when the predetermined time elapses after the door is locked and the transmission / reception means recognizes the reception of the specific code signal, the notification means performs a notification operation. It will be possible to inform you that the container has been left in the car. That is, when the user gets off the vehicle based on a change from opening to closing of the door and the door is unlocked, a specific code signal is transmitted from the remote controller to lock the door. Since then, the door is a predetermined time elapses after locked, to retransmit the identification code signal from the remote controller. If the remote control device is not misplaced (if the user carries the remote control device), the remote control device has a long communication distance with the transmission / reception means, and the remote control device is misplaced in the vehicle. For example, the communication distance remains short. Therefore, in the former case, the transmission / reception means does not recognize the reception of the specific code signal at the predetermined time, and in the latter case, the transmission / reception means recognizes the reception of the specific code signal. Thereby, the misplacement of the remote controller in the vehicle is recognized.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. In FIG. 1 showing the electrical configuration, a remote key 1 that is a remote controller has a receiving circuit (not shown) that receives a start transmission signal transmitted from a control device 2 to be described later, and triggers reception of the start transmission signal. As shown, a transmission circuit (not shown) for transmitting a specific code transmission signal to the control device 2 is incorporated.
[0008]
On the other hand, a control device 2 is disposed on the automobile side. The control device 2 includes a CPU, a ROM, a RAM, and the like, stores a control program, and serves as transmission / reception means. A transmission / reception device 3 is connected. The transmission / reception device 3 includes a transmission circuit 4, a reception circuit 5, and an antenna 6.
[0009]
When an activation signal is input from the control device 2 to the transmission circuit 4, an activation transmission signal is generated, and this activation transmission signal is transmitted to the reception circuit of the remote key 1 via the antenna 6. The receiving circuit 5 demodulates the specific code transmission signal received from the remote key 1 via the antenna 6 and outputs the specific code signal to the control device 2.
[0010]
As shown in FIG. 2, the antenna 6 includes a ferrite core 7 and an enameled wire 8 around which the ferrite core 7 is wound, and is entirely covered with a resin antenna case 9. As shown in FIG. 4, the door outer handle 10 is attached to the back surface portion with screws 11. The enameled wire 8 of the antenna 6 is electrically connected to the transmitting circuit 4 and the receiving circuit 5. When the enameled wire 8 is energized, a magnetic field is generated, and the remote key 1 and the transmitting / receiving device 3 are connected. Magnetic communication will be performed between them.
[0011]
Further, the door outer handle operation detection switch 12 detects an operation state of the door knob 13 and includes a limit switch 15 having a switch lever 14. When the door knob 13 is operated by the user, the link portion 16 rotates about the shaft 17 as a center. The limit switch 15 detects the turning operation via the switch lever 14, outputs an ON signal to the control device 2 via the input circuit 18, and when the operation of the door knob 13 is released, the OFF signal Is output to the control device 2.
[0012]
Referring back to FIG. 1, door courtesy switches 19 serving as opening / closing detection means are provided corresponding to the doors to detect the open / closed state of the doors, and are opened via the input circuit 18 according to the open / closed state of the doors. A signal or a closing signal is output to the control device 2.
[0013]
The door lock mechanism 20 is connected to the control device 2 via the door lock drive circuit 21 so that the door lock mechanism 20 can be locked or unlocked by a lock signal or an unlock signal output from the control device 2. It has become.
[0014]
Further, the horn 22 serving as a notification means is connected to the control device 2 via the horn drive circuit 23, and the sounding operation or the stop operation is performed by the sounding signal or the stop signal output from the control device 2. Yes.
[0015]
The control circuit 2 is a control means, and its control contents will be described together with the operation of this embodiment with reference to the flowcharts of FIGS. First, the door lock operation will be described with reference to FIG.
[0016]
The user opens and closes the door when getting off (steps S1 and S2). When the door is closed, the control device 2 inputs a closing signal from the door courtesy switch 19 via the input circuit 18 and if the door is unlocked (step S3), the enamel wire of the antenna 6 8 is energized to output a start signal to the transmission circuit 4. When receiving the activation signal, the transmission circuit 4 generates an activation transmission signal and transmits the activation transmission signal to the remote key 1 (step S4).
[0017]
When receiving the activation transmission signal, the remote key 1 transmits a specific code transmission signal to the reception circuit 5. Then, the control device 2 determines whether or not the receiving circuit 5 has received the specific code transmission signal transmitted from the remote key 1 (step S5). The demodulated specific code signal is collated with a pre-stored specific code, and it is determined whether or not they are matched four times in succession (step S6). When they are matched, a door lock signal is output (step S6). S7).
[0018]
On the other hand, when the control device 2 determines in step S5 that the receiving circuit 5 does not receive the specific code transmission signal transmitted from the remote key 1, or in step S6, the specific code signal received and demodulated is received. If it is determined that the specific code stored in advance does not match even once, the operation is terminated after 5 seconds have elapsed since the first activation transmission signal was transmitted in step S4 (step S8). In step S9, five seconds after the door lock signal is output, the remote key 1 receives the specific code transmission signal in response to the activation transmission signal being transmitted to the remote key 1 in step S10. To 5. The control device 2 determines whether or not the reception circuit 5 has received the specific code transmission signal transmitted from the remote key 1 (step S11). The specific code signal is collated with a pre-stored specific code, and it is determined whether or not they are inconsistent four times in succession, that is, whether or not they have matched even once (step S12). The device 2 outputs a ringing signal to the horn drive circuit 23, and performs ringing for 0.1 seconds five times (step S13). As a result, the user is informed that the remote key 1 is within a range where communication with the transmission / reception device 3 is possible, that is, the remote key 1 has been misplaced.
[0019]
On the other hand, if the control device 2 determines in step S11 that the receiving circuit 5 does not receive the specific code transmission signal transmitted from the remote key 1, or in step S12, the specific code signal received and demodulated is received. If it is determined that the specific code stored in advance does not match even once, it is determined that the user has carried the remote key 1 away from the vehicle, and thus the operation ends with the door locked.
[0020]
Next, the door unlocking operation will be described with reference to FIG.
When the user operates the door knob 13 to get on, the door outer handle operation detection switch 12 detects the operation state of the door knob 13, and the door outer handle operation detection switch 12 sends an ON signal to the control device 2. (Step T1). At this time, if the door is in a locked state (step T2), the control device 2 energizes the enameled wire 8 of the antenna 6 and outputs an activation signal to the transmission circuit 4. When receiving the activation signal, the transmission circuit 4 generates an activation transmission signal and transmits the activation transmission signal to the remote key 1 (step T3).
[0021]
When receiving the activation transmission signal, the remote key 1 transmits a specific code transmission signal to the reception circuit 5. The control device 2 determines whether or not the receiving circuit 5 has received the specific code transmission signal transmitted from the remote key 1 (step T4). The specific code signal is collated with a specific code stored in advance, and it is determined whether or not the two match each other (step T5). When the two match, the control device 2 confirms that the operation of the door knob 13 has been released. (Step T6), an unlock signal is output to the door lock drive circuit 21, and unlock drive is executed (step T7).
[0022]
On the other hand, the control device 2 determines in step T4 that the receiving circuit 5 does not receive the specific code transmission signal transmitted from the remote key 1, or in step T5, the specific code signal received and demodulated is received. If it is determined that the specified code does not match the pre-stored code, if 2 seconds have passed since the first activation transmission signal was transmitted in step T3 (step T8), the user carries the remote key 1 It is judged that there is no, and the unlocking operation is not executed.
[0023]
According to such a present Example, it is detected by the door courtesy switch 19 that the user got off, and in a predetermined time after this detection time (five seconds after the transmission of the start transmission signal in step S10), the specific code When the reception of the transmission signal is recognized, the horn 22 is sounded so that the misplacement of the remote key 1 can be notified. In particular, since the communication between the remote key 1 and the transmission / reception device 3 is a magnetic communication, the misplacement detection of the remote key 1 can be quickly detected. That is, in the case of radio wave communication, since the communication range (distance) is wide, that is, the signal attenuation is gentle, the remote key 1 and the in-vehicle transmission / reception device 3 are close to each other unless it is determined with an extremely high-accuracy communication level. It is difficult to detect that there is. For this reason, it is actually difficult to determine whether or not the remote key 1 is left behind. However, according to the present embodiment, since the magnetic communication is highly attenuated, it is easy to determine the distance in the short distance range, and quick misplacement detection can be performed.
[0024]
Further, when the user gets on the vehicle, the communication between the remote key 1 and the transmission / reception device 3 is started in accordance with the operation of the door knob 13, the communication is established, and the transmitted specific code is stored. Since the door lock mechanism 20 is unlocked when it matches the specific code, when the user operates the door knob 13, the door lock mechanism 20 is automatically unlocked.
[0025]
7 to 9 show a second embodiment of the present invention. In this embodiment, the configuration for attaching the antenna to the door outer handle is different from that of the first embodiment. The resin bobbin 24 is integrally formed on the back surface of the door outer handle 25, and an enamel wire 26 is wound around the bobbin 24. The air core coil 27 is formed from the bobbin 24 and the enamel wire 26. Is configured as an antenna. By disposing a limit switch 29 that constitutes the door outer handle operation detection switch 28 in the hollow portion of the air-core coil 27, the component space can be used effectively.
[0026]
The present invention is not limited to the above-described embodiment, and the following modifications or expansions are possible.
In each of the embodiments described above, the horn 22 is used as a notification means for notifying the user of misplacement. However, a dedicated notification means may be provided for misplacement notification.
[0027]
【The invention's effect】
As is apparent from the above description, according to the invention described in claim 1, in the configuration in which the remote controller and the transmission / reception means communicate with each other and the appropriate control mechanism is controlled based on the communication information, the user can get off the vehicle. This is detected by the open / close detection means, and when the predetermined time has elapsed after the door is locked and the reception of the specific code signal is recognized, the notification means is activated so that the remote controller is misplaced. Can be informed.
[0028]
According to the second aspect of the present invention, since the communication between the remote controller and the transmission / reception means is a magnetic communication, the distance determination in the short-range range is facilitated. The notification operation can be performed quickly.
[Brief description of the drawings]
FIG. 1 is an electrical configuration diagram showing a first embodiment of the present invention. FIG. 2 is a longitudinal front view showing a mounting state of an antenna and a door outer handle operation detection switch. FIG. 3 is a side view. FIG. 5 is a flowchart showing a door lock operation. FIG. 6 is a flowchart showing a door unlock operation. FIG. 7 is a vertical front view showing different mounting states of an antenna and a door outer handle operation detection switch according to a second embodiment of the present invention. [Fig. 8] Side view [Fig. 9] Plan view [Explanation of symbols]
In the drawings, 1 is a remote key (remote controller), 2 is a control device (control means), 3 is a transmission / reception device (transmission / reception means), 19 is a door courtesy switch (opening / closing detection means), and 22 is a horn (notification means). .

Claims (2)

A remote control device that is portable and wirelessly transmits a specific code signal; and a transmission / reception means that is provided in a vehicle and capable of communicating with the remote control device, and includes communication information between the remote control device and the transmission / reception means. Based on what controls an appropriate control object based on
Open / close detecting means for detecting opening / closing of a vehicle door;
Notification means;
When the door is unlocked when the opening / closing detection means detects a change from opening to closing of the door, the remote controller transmits a specific code signal, and the transmission / reception means receives the specific code signal. together to lock the door when it is recognized, re-transmit a specific code signal from the remote controller when the predetermined time by locking the door has elapsed, the transmitting and receiving means recognizes the reception of this particular code signal A vehicle remote control system comprising control means for informing the notification means at times.   2. The vehicle remote control system according to claim 1, wherein communication between the remote controller and the transmission / reception means is performed by magnetic communication.

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