JP4545998B2 - Communication control method for in-vehicle device remote control device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention locks an in-vehicle device when a portable transmitter / receiver carried by a vehicle user transmits reply data to the vehicle-side receiver in response to receiving a request signal of a normal code transmitted by the vehicle-side transmitter. An on-vehicle device remote control device including a vehicle-side control unit that controls the operation of the on-vehicle device lock means so as to switch between a state and an unlocked state and controls transmission from the vehicle-side transmitter , The present invention relates to an improvement of a communication control method in a control device.
[0002]
[Prior art]
Conventionally, such an in-vehicle device remote control device is already known, for example, in Japanese Patent Application Laid-Open No. 11-336394.
[0003]
[Problems to be solved by the invention]
By the way, when there are a plurality of portable transmitters / receivers capable of communicating with the vehicle in the range where communication with the vehicle-side transmitter and receiver is possible, those portable If a request signal is sent from the vehicle-side transmitter without specifying the receiver, the reply data will be sent to the vehicle-side receiver from multiple portable transmitters / receivers at the same time. For example, there is a possibility that the door cannot be opened even when a legitimate vehicle user carrying the portable transmitter / receiver approaches the vehicle.
[0004]
The present invention has been made in view of such circumstances, and even when a plurality of portable transmitters / receivers exist in a range in which communication is possible between a vehicle-side transmitter and a receiver, the present invention is compatible with the vehicle. Only the portable transmitter / receiver responds to the request signal from the vehicle-side transmitter, so that interference from multiple portable transmitters / receivers can be avoided and the unique information corresponding to the vehicle It is an object of the present invention to provide a communication control method in an in- vehicle device remote control device that simplifies registration to a portable transmitter / receiver .
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 is a vehicle-side transmitter disposed in a vehicle, a vehicle-side receiver disposed in the vehicle, and a normal code transmitted by the vehicle-side transmitter. A portable transmitter / receiver that transmits reply data in response to receiving a request signal, an in-vehicle device locking means that switches between a locked state and an unlocked state of the in-vehicle device, and a vehicle-side receiver from the portable transmitter / receiver. A vehicle-side control unit for controlling the operation of the vehicle-mounted device locking means so as to switch the vehicle-mounted device locking means in response to receiving the reply data and controlling transmission from the vehicle-side transmitter. the in-vehicle equipment remote control system comprising the vehicle to the portable transmitter and receiver in which whether the vehicle-side control unit portable transmitter and receiver were different for each mobile transmitter and receiver in order to determine with corresponding The vehicle-side control corresponding to the vehicle is performed simultaneously with the pre-written portable transmitter / receiver ID being registered in the vehicle-side control unit by wireless communication from the portable transmitter / receiver to the vehicle-side receiver. The vehicle-side control unit of the portable transmitter / receiver ID is registered in the portable transmitter / receiver by wireless communication from the vehicle transmitter to the portable transmitter / receiver. After registration to the portable transmitter / receiver and registration of the unique information corresponding to the vehicle, the portable transmitter / receiver transmits the regular information transmitted from the vehicle-side transmitter including the registered unique information. Reply data is transmitted in response to receiving a code request signal.
[0006]
According to the method of the first aspect of the invention , the registration of the portable transmitter / receiver ID to the vehicle is always performed to confirm whether the portable transmitter / receiver is authorized. At that time, the registration work can be simplified by simultaneously registering the unique information to the portable transmitter / receiver. In addition, after registration, the completed portable transmitter / receiver responds to the request from the vehicle-side transmitter transmitting a request signal of a normal code including registered specific information corresponding to the vehicle to be communicated with by the portable transmitter / receiver. Even if there are multiple portable transmitters / receivers in a range where communication between the vehicle-side transmitter and receiver is possible, the portable transmitter / receiver corresponding to the vehicle is sent. Since only the machine responds to the request signal from the vehicle-side transmitter, it is possible to avoid the occurrence of interference by a plurality of portable transmitters / receivers.
[0007]
In addition to the configuration of the invention described in claim 1, the invention described in claim 2 includes the portable transmitter / receiver and the vehicle side when registering the portable transmitter / receiver ID in the vehicle control unit. The vehicle-mounted device locking means is switched to communication between the receiver and communication between the vehicle-side transmitter and the portable transmitter / receiver when registering unique information corresponding to the vehicle in the portable transmitter / receiver. It is characterized by using wireless communication of the same frequency as that used when operating, and according to such a method, the specific information is registered in the portable transmitter / receiver without disassembling the portable transmitter / receiver. In addition, since no new medium is required for registration, unique information corresponding to the vehicle can be registered in the portable transmitter / receiver without increasing the cost.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on one embodiment of the present invention shown in the accompanying drawings.
[0009]
1 to 4 show an embodiment of the present invention, FIG. 1 is a diagram showing a schematic configuration of an in-vehicle device remote control device, and FIG. 2 is a diagram for explaining initial writing to a portable transmitter / receiver. FIG. 3 is a diagram for explaining initial writing of the vehicle-side control unit, and FIG. 4 is a diagram for explaining registration communication between the portable transmitter / receiver and the vehicle-side control unit.
[0010]
First, in FIG. 1, vehicle-side external transmitters 2 </ b> L and 2 </ b> R are provided on the vehicle V outside the left and right sides of the passenger compartment 1, and the vehicle-side internal transmitter 3 and the vehicle-side receiver are provided in the vehicle V in the passenger compartment 1. A machine 4 is provided.
[0011]
The vehicle V is provided with a door lock means 6, which is an in-vehicle device lock means, a steering lock means 10, and an engine start control means 12. The door lock means 6 includes the left and right doors 5L, The 5R lock state and the unlock state can be automatically switched, and the steering lock means 10 can switch the steering lock state and the unlock state in which the operation of the steering wheel 11 is disabled. The control means 12 is configured to switch engine start permission / prohibition in accordance with the operation of the start button 13.
[0012]
On the outer surface side of the doors 5L and 5R, switching intention detection means 7L and 7R for detecting the switching intention of the vehicle user who switches between the locked state and the unlocked state of the doors 5L and 5R are attached, respectively. Thus, the switching intention detection means 7L and 7R are unlock switches 8L and 8R that detect the switching intention from the locked state to the unlocked state when the vehicle user touches when getting on, and the vehicle user operates when getting off the vehicle. The lock switches 9L and 9R detect the intention to switch from the unlocked state to the locked state.
[0013]
The portable transmitter / receiver 14 that can be carried by the vehicle user returns reply data in response to receiving a request signal of a normal code from one of the transmitters 2L, 2R, 3 arranged in the vehicle V. It transmits to the vehicle side receiver 4.
[0014]
The operations of the door lock means 6, the steering lock means 10 and the engine start control means 12 are controlled by a vehicle-side control unit 15 mounted on the vehicle V, and each of the transmitters 2L, 2R, 3 Transmission is also controlled by the vehicle-side control unit 15, and the vehicle-side control unit 15 receives the detection results of the switching intention detection means 7L and 7R and the reception result of the vehicle-side receiver 4.
[0015]
Thus, the vehicle-side control unit 15 detects the switching intention among the vehicle-side external transmitters 2L and 2R when one of the switching intention detection means 7L and 7R on the left and right sides detects the switching intention of the vehicle user. A request signal of a normal code is transmitted from the vehicle-side external transmitter on the side where the switching intention detecting means is disposed, and the vehicle user carries the remaining vehicle-side external transmitter and vehicle-side internal transmitter 3 The vehicle-side external transmitters 2L and 2R and the vehicle-side internal are configured so as to output signals that prevent or reply to a request signal received by a portable transmitter / receiver other than the portable transmitter / receiver 14. Controls transmission from the transmitter 3. As a result, communication is performed between any one of the vehicle-side external transmitters 2L and 2R and the vehicle-side internal transmitter 3, the vehicle-side receiver 4, and the portable transmitter / receiver 14.
[0016]
When there are a plurality of portable transmitters / receivers 14 in a range in which communication with any one of the vehicle-side external transmitters 2L and 2R and the vehicle-side internal transmitter 3 and the vehicle-side receiver 4 is possible. When a request signal is transmitted from any one of the vehicle-side external transmitters 2L and 2R and the vehicle-side internal transmitter 3 without specifying one of those portable transmitters / receivers 14... Reply data is transmitted simultaneously from the transmitters / receivers 14 to the vehicle-side receiver 4, and the vehicle cannot read the data.
[0017]
Therefore, specific information corresponding to the vehicle V to be communicated with each portable transmitter / receiver 14... Is registered in each portable transmitter / receiver 14... And the portable transmitter / receiver 14. Reply data is transmitted to the vehicle side receiver 4 in response to receiving a request signal of a normal code including the unique information.
[0018]
Thus, a different vehicle ID for each vehicle V and a plurality of portable transmitters / receivers 14... Prepared for the same vehicle V. Are registered as individual information corresponding to the vehicle V in each portable transmitter / receiver 14... And a plurality of portable transmitters / receivers 14. It is possible to identify and prompt a response.
[0019]
By the way, when a plurality of portable transmitters / receivers 14 prepared for the same vehicle are shipped from the factory, initial writing by a writing machine (not shown) is performed on each portable transmitter / receiver 14 as shown in FIG.
[0020]
That is, a unique ID code as a portable transmitter / receiver ID that is different for each portable transmitter / receiver 14 is written from the writer to the memory of the portable transmitter / receiver 14, and the secret code, a different vehicle ID for each vehicle V, the same vehicle V is assigned to a plurality of portable transmitters / receivers 14 for V. As the rolling code, “0” is written from the writer to the memory of the portable transmitter / receiver 14.
[0021]
On the other hand, when the vehicle-side control unit 15 is shipped from the factory, initial writing is performed by the vehicle-side control unit 15 using a writing machine (not shown) as shown in FIG.
[0022]
That is, the unique secret code and the unique vehicle ID code are written from the writer to the memory of the vehicle-side control unit 15, and the portable transmitter / receiver ID, portable transmitter / receiver NO. As the rolling code, “0” is written from the writer to the memory of the vehicle control unit 15.
[0023]
The registration of the unique information corresponding to the vehicle V to the portable transmitter / receiver 14 is carried by the vehicle-side control unit 15 as information for determining whether or not the portable information receiver / receiver 14 is compatible with the vehicle V. This is executed at the same time when the portable transmitter / receiver ID registered in advance in the receiver 14 is registered in the vehicle-side control unit 15. In addition, the registration of the portable transmitter / receiver ID is performed using wireless communication of the same frequency (eg, 320 MHz) as the signal transmitted from the portable transmitter / receiver 14 to the vehicle-side receiver 4 and corresponds to the vehicle V. The registration of the specific information is performed using wireless communication with the same frequency (for example, 120 to 140 KHz) as the signal transmitted from the vehicle-side external transmitters 2L and 2R and the vehicle-side internal transmitter 3 to the portable transmitter / receiver 14. Is done.
[0024]
Thus, after the control mode of the vehicle-side control unit 15 is set to the registration mode by a specific operation such as an ignition switch, for example, by operating a push button or the like attached to the portable transmitter / receiver 14, FIG. As shown, the portable transmitter / receiver 14 transmits the portable transmitter / receiver ID and the rolling code to the vehicle-side receiver 4, and the vehicle-side control unit 14 registers the portable transmitter / receiver ID and the rolling code. become.
[0025]
Upon completion of registration of the portable transmitter / receiver ID and the rolling code, the vehicle-side control unit 15 follows the signal for setting the portable transmitter / receiver 14 in the registration mode, followed by a secret code and a unique code corresponding to the vehicle V. Information, ie vehicle ID and portable transmitter / receiver N0. Is transmitted from one of the vehicle-side external transmitters 2L and 2R and the vehicle-side internal transmitter 3 to the portable transmitter / receiver 14, and the portable transmitter / receiver 14 in the registration mode is secreted. The code and the unique information corresponding to the vehicle V are registered.
[0026]
Next, the operation of this embodiment will be described. Specific information corresponding to the vehicle V that is the object of communication of the portable transmission / reception device 14 is registered in the portable transmission / reception device 14, and the registered unique information is described above. In response to receiving a request signal for a normal code transmitted from any one of the vehicle-side external transmitters 2L, 2R and the vehicle-side internal transmitter 3, the portable transmitter / receiver 14 returns reply data Since transmission is performed, even if there are a plurality of portable transmitters / receivers 14 in a range where communication with the vehicle-side external transmitters 2L and 2R, the vehicle-side internal transmitter 3 and the vehicle-side receiver 4 is possible. Since only the portable transmitter / receiver 14 corresponding to the vehicle V responds to the request signal, it is possible to avoid the occurrence of interference by the plurality of portable transmitters / receivers 14.
[0027]
In addition, the unique information is stored in a plurality of portable transmitters / receivers 14... Prepared for the same vehicle V. Therefore, a plurality of portable transmitters / receivers 14 for the same vehicle V communicate with the vehicle-side external transmitters 2L and 2R, the vehicle-side internal transmitter 3 and the vehicle-side receiver 4. Even if it exists within the possible range, it is possible to avoid the occurrence of interference by the respective portable transmitters / receivers 14.
[0028]
In addition, in order to confirm whether or not the portable transmitter / receiver 14 is legitimate, the unique information corresponding to the vehicle V is carried with the portable transmitter / receiver ID in the vehicle-side control unit 15 that is always registered. Since registration is performed in the transmitter / receiver 14, the registration work can be simplified.
[0029]
Further, a radio having the same frequency as that used when switching the door lock means 6, the steering lock means 10 and the engine start control means 12 for communication between the portable transmitter / receiver 14 and the vehicle side control unit 15 at the time of registration. Since communication is used, the unique information can be registered in the portable transmitter / receiver 14 without disassembling the portable transmitter / receiver 14, and a new medium is not required for registration. Therefore, the unique information corresponding to the vehicle V can be registered in the portable transmitter / receiver 14 without increasing the cost.
[0030]
Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the present invention described in the claims. It is.
[0031]
For example, in the above embodiment, the unique information of the vehicle includes the portable transmitter / receiver NO. However, only the vehicle ID may be registered in the portable transmitter / receiver 14 as the unique information.
[0032]
【The invention's effect】
As described above, according to the first aspect of the present invention, the registration work can be simplified, and a plurality of portable transmitters / receivers can be provided within a communication range between the vehicle-side transmitter and the receiver. Even if there is, it is possible to avoid the occurrence of interference due to a plurality of portable transmission / reception devices.
[0033]
According to the invention described in claim 2, the unique information can be registered in the portable transmitter / receiver without disassembling the portable transmitter / receiver, and the unique identifier can be registered without increasing the cost. Information can be registered in a portable transmitter / receiver.
[Brief description of the drawings]
FIG. 1 is a diagram showing a schematic configuration of an in-vehicle device remote control device.
FIG. 2 is a diagram for explaining initial writing to a portable transmission / reception device;
FIG. 3 is a diagram for explaining initial writing of a vehicle-side control unit.
FIG. 4 is a diagram for explaining registration communication between a portable transmitter / receiver and a vehicle-side control unit.
[Explanation of symbols]
2L, 2R: Vehicle-side external transmitter 3 ... Vehicle-side internal transmitter 4 ... Vehicle-side receiver 6 ... Door lock means 10 as vehicle-mounted device lock means 10 ... Vehicle-mounted device lock means Steering lock means 12 ... Engine start control means 14 as on-vehicle equipment locking means ... Portable transmitter / receiver
15 ... Vehicle side control unit V ... Vehicle

Claims (2)

A vehicle-side transmitter (2L, 2R, 3) disposed in the vehicle (V), a vehicle-side receiver (4) disposed in the vehicle (V), and a vehicle-side transmitter (2L, 2R, 3) ) And a portable transmitter / receiver (14) for transmitting reply data in response to receiving a request signal for a normal code, and an in-vehicle device locking means (6, 10) for switching between a locked state and an unlocked state of the in-vehicle device. , 12) and the vehicle-side receiver (4) switch the on-vehicle device locking means (6, 10, 12) in response to receiving the reply data from the portable transmitter / receiver (14). In- vehicle device comprising: a vehicle-side control unit (15) for controlling the operation of the on-vehicle device lock means (6, 10, 12) and controlling transmission from the vehicle-side transmitter (2L, 2R, 3) in the remote control device, the vehicle (V) In order for the vehicle-side control unit (15) to determine whether or not it is a corresponding portable transmitter / receiver (14), the portable transmitter / receiver (14) is made different for each portable transmitter / receiver (14). At the same time as the pre-written portable transmitter / receiver ID is registered in the vehicle-side control unit (15) by wireless communication from the portable transmitter / receiver (14) to the vehicle-side receiver (4), Wireless communication from the vehicle-side transmitter (2L, 2R, 3) to the portable transmitter / receiver (14) with specific information written in advance in the vehicle-side control unit (15) corresponding to the vehicle (V) To the portable transmitter / receiver (14), registering the portable transmitter / receiver ID in the vehicle-side control unit (15), and transmitting the unique information corresponding to the vehicle (V) to the portable transmitter / receiver (14). after registration in the receiver (14), the mobile The transmitter / receiver (14) transmits reply data in response to receiving the request signal of the normal code transmitted from the vehicle-side transmitter (2L, 2R, 3) including the registered unique information. A communication control method in an in-vehicle device remote control device. Communication between the portable transmitter / receiver (14) and the vehicle receiver (4) when registering the portable transmitter / receiver ID in the vehicle-side control unit (15), and the vehicle (V) The vehicle-mounted device lock is used for communication between the vehicle-side transmitter (2L, 2R, 3) and the portable transmitter / receiver (14) when registering the corresponding unique information in the portable transmitter / receiver (14). 2. The communication control method for an on-vehicle equipment remote control device according to claim 1, wherein wireless communication having the same frequency as that used when switching means (6, 10, 12) is used.

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