JP2006233534A - Remote control device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a remote control device for a vehicle, which enables a portable unit having a transmitting/receiving function and carried with the vehicle user, to change the state of an on-vehicle unit according to the contents of a response signal transmitted to an on-vehicle receiver in response to reception of a transmission request signal transmitted from an on-vehicle transmitter, wherein the remote control device is improved in speed of response. <P>SOLUTION: According to the remote control device for a vehicle, when the plurality of portable units are present in a range where communication is possible from the on-vehicle transmitter and to the on-vehicle receiver, one of the portable units compatible with the vehicle is identified as a communication target, and transmission request signals are continuously transmitted from the on-vehicle transmitter by changing over the portable units to be identified. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  According to the present invention, when a portable device having a transmission / reception function carried by a vehicle user receives a transmission request signal transmitted by a vehicle-side transmitter and transmits a reply signal to the vehicle-side receiver, the portable device responds to the content of the reply signal. The present invention relates to a vehicle remote control device that changes the state of an in-vehicle device.

  First, the principle of operation of the vehicular remote control device will be described using an in-vehicle device that switches from a locked state to an unlocked state when an input is input to the unlock switch. Examples of such in-vehicle devices include door lock control devices, steering lock control devices, and engine start control devices.

  It is assumed that one portable device corresponding to this vehicle exists in a range in which communication is possible between the vehicle-side transmitter and the vehicle-side receiver. When there is an input to the unlock switch, a transmission request signal is requested from the vehicle-side transmitter, and the portable device receives this transmission request signal and transmits a reply signal. When the vehicle-side receiver receives the reply signal transmitted from the portable device and can read the content of the reply signal, the vehicle-side receiver switches the in-vehicle device from the locked state to the unlocked state.

  By the way, when there are a plurality of portable devices of the same specification in a range where communication between the vehicle-side transmitter and the vehicle-side receiver is possible, a transmission request is made from the vehicle-side transmitter without specifying those portable devices. When a signal is transmitted, a response signal is transmitted from a plurality of portable devices at the same time, and the vehicle side receiver receives a signal in which the response signals from a plurality of portable devices overlap. Cannot be read.

  Therefore, in the conventional vehicle remote control device, a communication procedure called an anti-collision mode is prepared, and even when there are a plurality of portable devices in a range in which communication is possible between the vehicle-side transmitter and the vehicle-side receiver, The vehicle-side receiver can read the content of the reply signal. In communication in the anti-collision mode, first, a transmission request signal specifying one of a plurality of portable devices targeted for the vehicle is transmitted from the vehicle-side transmitter. Thereby, since this transmission request signal is received by only one portable device, and only this portable device transmits a reply signal, the vehicle-side receiver can read the contents of the reply signal.

  FIG. 2 is a time chart showing a state of transmission of a transmission request signal from a conventional vehicle-side transmitter and reception of a return signal from a portable device at a vehicle-side receiver, and using this, an anti-collision is shown. A description will be given of communication by mode and a method for specifying one of a plurality of portable devices for the same vehicle.

  Here, no. 1 to No. No. 5 mobile device has been registered. No. 5 is a communication device that can be communicated between the vehicle-side transmitter and the vehicle-side receiver. It is assumed that there are a plurality of portable devices having the same specifications including five portable devices.

  When there is an input to the unlock switch, a transmission request signal 201 is transmitted from the vehicle-side transmitter. At this time, it is unclear how many portable devices exist in the range where communication between the vehicle-side transmitter and the vehicle-side receiver is possible, so this 201 is a transmission request signal for all portable devices. . Since there are a plurality of portable devices in a range in which the vehicle-side transmitter and the vehicle-side receiver can communicate with each other, the plurality of portable devices simultaneously transmit a reply signal, and the vehicle-side receiver has a plurality of portable devices. The reply signal 202 in which the reply signals from the mobile phone are overlapped is received, and the content of the reply signal from the portable device cannot be read. At this time, it is determined that there are a plurality of portable devices within a communicable range between the vehicle-side transmitter and the vehicle-side receiver, and the mode shifts to the anti-collision mode.

  And No. with which communication was established last time. The transmission request signal 203 specifying the portable device 5 is transmitted from the vehicle-side transmitter. The reason for prioritizing and identifying the portable device with which the previous communication was established is that if there are multiple portable devices within the range where communication between the vehicle-side transmitter and the vehicle-side receiver is possible, This is because there is a high possibility that the machine will be included.

  In the case of this example, in the range in which communication is possible between the vehicle-side transmitter and the vehicle-side receiver, No. No. 5 mobile device exists, so no. The portable device 5 receives the transmission request signal 203 and transmits a reply signal 204. Since the vehicle-side receiver can receive the reply signal 204 and read the contents, communication is established, and communication between the vehicle-side transmitter, the vehicle-side receiver, and the portable device ends here. Is switched from the locked state to the unlocked state.

  Next, in a range in which communication is possible between the vehicle-side transmitter and the vehicle-side receiver, No. The time chart of FIG. 3 shows the state of transmission of a transmission request signal from the vehicle-side transmitter and reception of a reply signal from the portable device at the vehicle-side receiver when only one portable device of 5 exists. It explains using.

  In FIG. 3, when there is an input to the unlock switch, a transmission request signal 301 is transmitted from the vehicle-side transmitter. At this time, since it is unknown how many portable devices exist in the range where communication between the vehicle-side transmitter and the vehicle-side receiver is possible, this 301 is a transmission request signal for all portable devices. . In response to the transmission request signal 301 for all portable devices, No. Since only the portable device of No. 5 transmits the reply signal 302, the vehicle-side receiver is No. 5. The communication is established because the reply signal 302 from one portable device 5 can be received and the contents can be read, and the communication between the vehicle-side transmitter, the vehicle-side receiver, and the portable device ends here, Switch the in-vehicle device from the locked state to the unlocked state.

  Next, there is no portable device registered in the target vehicle in a range where communication between the vehicle-side transmitter and the vehicle-side receiver is possible, and there are a plurality of unregistered portable devices having the same specification. The transmission request signal from the vehicle-side transmitter and the reception of the reply signal from the portable device at the vehicle-side receiver will be described with reference to the time chart of FIG.

  In FIG. 4, when there is an input to the unlock switch, a transmission request signal 401 is transmitted from the vehicle-side transmitter. At this time, since there are a plurality of portable devices in a range in which communication is possible between the vehicle-side transmitter and the vehicle-side receiver, the plurality of portable devices simultaneously transmit a reply signal, and the vehicle-side receiver Since the reply signal 402 in which the reply signals from the portable device overlap is received, the contents of the reply signal from the portable device cannot be read. At this time, it is determined that there are a plurality of portable devices within a communicable range between the vehicle-side transmitter and the vehicle-side receiver, and the mode shifts to the anti-collision mode. And No. with which communication was established last time. The transmission request signal 403 specifying the portable device 5 is transmitted from the vehicle-side transmitter. However, no. Since there is no portable device 5, the transmission request signal 403 is not received. Therefore, the reply signal 404 is not transmitted from the portable device, and the vehicle-side receiver does not receive the reply signal 404. In this case, with respect to all of the plurality of portable devices targeted for this vehicle, it is determined whether one unit is specified and the transmission request signal is transmitted. A transmission request signal specifying any one of the machines is transmitted. Here, no. 1 to No. Since there are no five portable devices of 5, the vehicle-side transmitter sequentially transmits a transmission request signal specifying one portable device at a time, and after the fifth transmission 411, the reply signal 412 cannot be received. Is determined, communication is not established, and the process ends. At this time, the in-vehicle device remains in the locked state.

  In FIG. 3 is present, the reply signal 410 is transmitted in response to the transmission request signal 409, so that the vehicle-side receiver receives the reply signal 410 and can read the contents, so that communication is established and the vehicle Communication between the side transmitter, the vehicle side receiver, and the portable device ends here, and the in-vehicle device is switched from the locked state to the unlocked state.

  As described above, when there are a plurality of portable devices having the same specification in a range in which communication is possible between the vehicle-side transmitter and the vehicle-side receiver and the transmission request signal is transmitted, the previous time, the vehicle-side transmitter and the reception Since there is a high possibility that the portable device that has successfully communicated between the devices is one of the plurality of portable devices, it is possible to quickly communicate by identifying the portable device that has succeeded in communication last time and transmitting a transmission request signal. The response speed was increased.

As prior art document information related to the invention of this application, for example, Patent Document 1 and Patent Document 2 are known.
JP 2003-20837 A JP 2003-27792 A

  However, in the above-described conventional configuration, the vehicle-side transmitter transmits a transmission request signal, and then the vehicle-side receiver cannot correctly receive the reply signal from the portable device, or the reception itself cannot be performed. Since the next transmission request signal is transmitted after confirmation, communication is completed when there is no portable device that has established communication in the range where communication between the vehicle-side transmitter and the vehicle-side receiver is possible. It takes a long time to do so, and there is a problem that the response speed as a vehicle remote control device is lowered.

  The present invention solves the above-described conventional problems, and an object of the present invention is to provide a communication method for a vehicle remote control device with an increased response speed in the presence of a plurality of portable devices.

  To achieve the above object, an invention according to claim 1 of the present invention includes a vehicle, a plurality of wireless portable devices to which an identification code unique to the vehicle is assigned, and a counter corresponding to each portable device. A vehicle-side transmitter that transmits a transmission request signal to the portable device, and a vehicle-side receiver that receives a return signal from the portable device, all of a plurality of portable devices targeting the same vehicle , Generating a transmission request signal specifying one of the plurality of portable devices, switching the specified portable device from the vehicle-side transmitter, and continuously transmitting the transmission request signal As a result, it is possible to shorten the time until the transmission request signal specifying each of a plurality of portable devices targeting the same vehicle is completed, so that the response speed as a vehicle remote control device is increased. The effect of being able to It is obtained.

  According to a second aspect of the present invention, when a portable device to be specified is switched from a vehicle-side transmitter and transmission request signals are continuously transmitted, the portable device corresponding to the transmission request signal that has already been transmitted. When the reply signal from the vehicle is received, the specified mobile device is immediately switched from the vehicle-side transmitter, and the transmission of the transmission request signal is interrupted. Since the communication is completed when the reply signal from the machine is received and the content is read out, the response speed of the vehicle remote control device can be increased.

  In the invention according to claim 3 of the present invention, when the transmission request signal is continuously transmitted, the time length of the transmission cycle is made variable. Since the reply signals from the portable device can be prevented from overlapping each other, the vehicle-side receiver can receive the reply device from the portable device and can read the data.

  The invention according to claim 4 of the present invention is such that the time length of the transmission cycle is equal to the time length of the reply signal, and reply signals from a plurality of portable devices targeting the same vehicle overlap each other. Therefore, the vehicle-side receiver can receive the return device from the portable device and can read the data.

  The vehicle remote control device of the present invention can increase the response speed of the vehicle remote control device.

(Embodiment 1)
Hereinafter, the first to fourth aspects of the present invention will be described using the first embodiment.

  Since the present embodiment has basically the same configuration as Patent Documents 1 and 2, only different portions will be described.

  FIG. 1 shows a state of transmission of a transmission request signal from a vehicle-side transmitter and reception of a reply signal from a portable device at the vehicle-side receiver in the embodiment of the present invention.

  Here, as an example, no. 1 to No. 5 mobile devices are registered, No. 5 in the previous communication. In the range where communication is established by the portable device of No. 5 and communication is currently possible between the vehicle-side transmitter and the vehicle-side receiver, 1 and No. A case where there are a plurality of portable devices including the two portable devices will be described.

  The time length of the transmission request signal is shorter than the time length of the reply signal.

  When there is an input to the unlock switch, a transmission request signal 101 is transmitted from the vehicle-side transmitter. At this time, since it is unclear how many portable devices are present in a range where communication between the vehicle-side transmitter and the vehicle-side receiver is possible, 101 is a transmission request signal for all portable devices.

  At this time, in a range in which communication is possible between the vehicle-side transmitter and the vehicle-side receiver, No. 1, no. Since there are two portable devices, the vehicle-side receiver receives the reply signal 102 in which the reply signals from the plurality of portable devices overlap, and cannot read the contents of the reply signal from the portable device.

  Here, transmission request signals 103, 104, 105, and 106 that specify one portable device registered in the vehicle are prepared. The order in which the portable devices are specified is as follows. 5 mobile devices are identified. After that, in order of registration, No. 1, no. 2, no. 3, no. Specify in the order of 4.

  First, no. The transmission request signal 103 specifying the portable device 5 is transmitted from the vehicle-side transmitter. Subsequently, No. 1 is set so that the time length of the transmission cycle becomes equal to the time length of the reply signal. A transmission request signal 104 specifying one portable device is transmitted from the vehicle-side transmitter. Subsequently, No. 1 is set so that the time length of the transmission cycle becomes equal to the time length of the reply signal. A transmission request signal 105 specifying the second portable device is transmitted from the vehicle-side transmitter. Subsequently, No. 1 is set so that the time length of the transmission cycle becomes equal to the time length of the reply signal. A transmission request signal 106 specifying the three portable devices is transmitted from the vehicle-side transmitter.

  The range in which communication is possible between the vehicle-side transmitter and the vehicle-side receiver is No. Since the portable device 5 does not exist, the vehicle-side receiver does not receive a reply signal corresponding to the transmission request signal 103. However, no. No. 1 mobile device exists, so no. The one portable device receives the transmission request signal 104 and transmits a reply signal 107. No. No. 2 portable device is also available. The second portable device receives the transmission request signal 105 and transmits a reply signal 108.

  The vehicle-side receiver first receives the reply signal 107. As a result, there is no need for the vehicle-side transmitter to newly transmit a transmission request signal. The transmission request signal 106 specifying the mobile device 3 is being transmitted, but is interrupted and the reply signal 108 is not received. Thereafter, the in-vehicle device is switched from the locked state to the unlocked state.

  About the above, the response speed is compared with a prior art. Total of the time required to transmit the transmission request signal from the vehicle-side transmitter and the time required to receive the reply signal from the portable device at the vehicle-side receiver or to determine that the reply signal cannot be received. Let the time be one unit of communication time. In the state of presence of the portable device in the first embodiment, in the prior art, as shown in FIG. 4, first, communication (transmission / reception) related to a transmission request signal that does not specify the portable device is performed, and then the previous communication is performed. No. succeeded. Communication related to the transmission request signal specifying the portable device 5 (only transmission but no reception) is performed. Since communication (transmission / reception) related to a transmission request signal specifying one portable device is performed, three units of communication time are required until communication is established.

  On the other hand, in the present invention, first, communication (transmission / reception) related to a transmission request signal that does not specify a portable device is performed. Only the transmission request signal specifying the portable device of No. 5 is transmitted. Since communication (transmission / reception) related to the transmission request signal specifying one portable device is performed, the time required for establishing communication is less than 3 units, so the response speed can be increased.

  In the present embodiment, the case where the time length of the transmission request signal is shorter than the time length of the reply signal has been described. However, when the time length of the transmission request signal is longer than the time length of the reply signal, a plurality of mobile phones Even if the transmission request signal that identifies one of the devices is continuously transmitted, the reply signals do not overlap. Therefore, by performing communication in the same procedure, the response speed can be increased.

  The vehicle-mounted device remote control device according to the present invention has an effect that the response speed of the vehicle remote-control device can be increased, and is useful as a vehicle remote-control device that changes the state of the vehicle-mounted device. is there.

The figure which shows the sequence of transmission of the transmission request signal from the vehicle side transmitter in Embodiment 1 of this invention, and reception of the reply signal from the portable device in a vehicle side receiver The figure which shows the sequence of transmission of the transmission request signal from the conventional vehicle side transmitter, and reception of the reply signal from the portable device in a vehicle side receiver The figure which shows the sequence of transmission of the transmission request signal from the conventional vehicle side transmitter, and reception of the reply signal from the portable device in a vehicle side receiver The figure which shows the sequence of transmission of the transmission request signal from the conventional vehicle side transmitter, and reception of the reply signal from the portable device in a vehicle side receiver

Explanation of symbols

101 A transmission request signal that does not specify a portable device 102 A signal in which reply signals transmitted from a plurality of portable devices are overlapped 103 No. No. 5 transmission request signal specifying the portable device 104 No. 5 No. 1 transmission request signal 105 No. 1 No. 2 transmission request signal for specifying the portable device 106 No. 2 in which transmission was interrupted during transmission. No. 3 transmission request signal 107 No. Reply signal sent only from the portable device 1 108 No. 1 Reply signal transmitted only from the portable device of No. 2 201 Transmission request signal not specifying the portable device 202 Signal overlapping the reply signals transmitted from a plurality of portable devices 203 No. 5 transmission request signal 204 No. 5 Reply signal transmitted only from the portable device 301 Transmission request signal 302 not specifying the portable device Reply signal transmitted only from portable device 5 401 Transmission request signal not specifying portable device 402 Signal obtained by overlapping reply signals transmitted from a plurality of portable devices 403 No. 5 transmission request signal 404 No. No. 5 is expected to receive the reply signal transmitted only from the portable device 405 No. 5 No. 1 transmission request signal specifying the portable device 1 No. 1 is expected to receive a reply signal transmitted only from the portable device 407. No. 2 transmission request signal 408 No. No. 2 Expected time for receiving a reply signal transmitted only from the portable device 409 No. 409 No. 3 transmission request signal 410 No. No. 3 is expected to receive a reply signal transmitted only from the portable device 411 No. 3 No. 4 transmission request signal 412 No. Expected time to receive a reply signal sent only from 4 mobile devices

Claims (4)

A vehicle, a plurality of wireless portable devices to which the vehicle-specific identification code is assigned, a counter corresponding to each portable device, a vehicle-side transmitter that transmits a transmission request signal to the portable device, A vehicle-side receiver that receives a reply signal from the portable device, and creates a transmission request signal that identifies one of the plurality of portable devices for all of the plurality of portable devices that target the same vehicle. A vehicle remote control device characterized by switching a portable device to be identified from a vehicle-side transmitter and continuously transmitting a transmission request signal. When a specific portable device is switched from the vehicle-side transmitter and a transmission request signal is continuously transmitted, when a response signal is received from the portable device corresponding to the transmission request signal that has already been transmitted, the vehicle side immediately The vehicular remote control device according to claim 1, wherein the mobile device to be identified is switched from the transmitter, and the transmission of the transmission request signal is interrupted. The vehicle remote control device according to claim 2, wherein the time length of the transmission cycle when the transmission request signal is continuously transmitted is variable. 4. The vehicle remote control device according to claim 3, wherein the time length of the transmission cycle is equal to the time length of the reply signal.

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