JP2007217901A - Door lock control device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door lock control device which eliminates wasteful action, and particularly reduces power consumption of a portable machine (remote control). <P>SOLUTION: The door lock control device is formed of: an RF transmitting antenna 3, an LF receiving antenna 4, and a keyless remote control section 2 of the portable machine, and an RF receiving antenna 5, an LF transmitting antenna 6, and a keyless controller 7 of an on-vehicle device, the portable machine and the on-vehicle device carrying out two-way communication; a crew detecting sensor 15 for detecting a crew in a vehicle; a means provided for the on-vehicle keyless controller, for adding information indicative of detection of the crew to information to be transmitted to the portable machine; and a means provided for the portable machine and carried out by a microcomputer 21 of the portable machine upon reception of the information indicative of the detection of the crew, so as to inhibit transmission of information to the vehicle, with respect to switch operation of the portable machine. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention belongs to a technical field of a door lock control device that appropriately locks a door according to a state of a vehicle.

  Conventionally, an automatic door opening / closing operation is realized according to the operation state of a door opening / closing switch operated by a user. When it is determined that an occupant is present in the vehicle interior based on the detection result of the detection means, the operation of the door opening / closing switch operated from the outside of the vehicle is invalidated (for example, Patent Literature 1).

In addition, there are some which detect that the key plate is inserted into the key cylinder and prohibit the operation of the wireless door lock control device when this is detected (for example, see Patent Document 2).
Japanese Patent Laying-Open No. 2005-221505 (page 5-7, full view) Japanese Examined Patent Publication No. 7-21264 (page 1-3, all figures)

  However, conventionally, since invalidation is performed on the vehicle side, a useless signal is transmitted from the remote controller due to an erroneous operation (locking / unlocking) by the user, and thus the battery is consumed. The remote control is unidirectional communication, and radio waves are transmitted due to malfunction until a key is inserted into the cylinder.

  The present invention has been made paying attention to the above-mentioned problems, and an object of the present invention is to provide a door lock control device that can eliminate wasteful operations and particularly suppress power consumption of a portable device (remote controller). There is to do.

  In order to achieve the above object, according to the present invention, a portable device carried by a vehicle user and a vehicle side device perform authentication processing by communication, thereby locking and unlocking the door of the vehicle without key operation. In the lock control device, a communication means that allows the portable device and the vehicle-side device to communicate bidirectionally, an occupant detection means that detects an occupant in the vehicle interior, and an occupant detected in information sent to the portable device Information adding means provided on the vehicle side to add information indicating that the vehicle has been detected; and information indicating that an occupant has been detected; And a prohibiting means provided in.

  Therefore, in the present invention, it is possible to prevent the useless battery of the portable device from being consumed.

  Hereinafter, an embodiment for realizing a door lock control device of the present invention will be described based on Example 1. FIG.

First, the configuration will be described.
FIG. 1 is a system block diagram of the door lock control apparatus according to the first embodiment.
The door lock control device according to the first embodiment includes two components, a vehicle side and a portable device side.
The portable device side of the door lock control device includes various switches 1, a keyless remote controller 2, an RF transmission antenna 3, and an LF reception antenna 4.

  The various switches 1 are a plurality of types of switches provided in the portable device, and include a lock switch 11 that requests a lock operation of the vehicle door, an unlock switch 12 that requests an unlock operation of the vehicle door, and an unlock operation of the trunk of the vehicle. And a panic switch 14 for requesting an operation such as an alarm on the vehicle side in case of an emergency such as finding theft of the vehicle.

The keyless remote control unit 2 includes a microcomputer 21 and an RF circuit 22.
The microcomputer 21 stores ID data that can be distinguished from others, generates transmission data according to an operation input, transmits the data, and performs reception processing from the vehicle side by the LF reception antenna 4 and the like.
The RF circuit 22 transmits transmission data from the RF transmission antenna 3 in response to a command from the microcomputer 21.

  Next, the vehicle side of the door lock control device includes an RF reception antenna 5, an LF transmission antenna 6, a keyless controller 7, a BCM 8, an actuator 9, a request switch 10, and an occupant detection sensor 15.

  The keyless controller 7 performs reception from the portable device side using the RF reception antenna 5, and performs transmission to the portable device side using the LF transmission antenna 6. As a result, the keyless controller 7 performs authentication request to the portable device side and ID authentication from the portable device side, and as a result, performs processing for requesting driving to the actuator 9 and the like.

The BCM 8 is a controller related to the vehicle body and drives the actuators 9 for locking and unlocking the vehicle door and unlocking the trunk. The BCM 8 receives a drive request command from the keyless controller 7. ing.
Further, panic operation is also controlled by a command from the keyless controller 7.

The actuator 9 includes a plurality of actuators, and performs door locking, unlocking operation, and trunk unlocking operation.
The request switch 10 is an operation input unit that is provided on a vehicle door or the like and makes an operation request such as unlocking the door or unlocking the trunk. That is, the user of the vehicle may use the various switches 1 of the portable device or may use the request switch 10 provided in the vehicle.

  The occupant detection sensor 15 is a sensor that detects the presence or absence of an occupant in the passenger compartment. For example, the occupant detection sensor 15 performs detection based on a load caused by sitting on each seat, or detects by moving a specific position.

Next, transmission data from the vehicle side to the portable device side will be described.
FIG. 2 is an explanatory diagram of communication data transmitted from the vehicle side to the portable device side in the door lock control device of the first embodiment.
In the door lock control device of the first embodiment, communication data 100 transmitted from the vehicle side to the portable device side includes a wakeup unit 101 that prompts activation to the portable device side, a vehicle ID unit 102 that indicates vehicle-side ID data, which An antenna position unit 103 indicating whether or not transmission has been performed from an antenna at a position and an occupant detection unit 104 indicating whether or not an occupant has been detected are included.

Next, the operation will be described.
[Keyless door lock control]
The basic operation of the door lock control device of the keyless system according to the first embodiment will be described.
In the door lock control device of the first embodiment, there are two operation modes for operating the request switch 10 of the vehicle and operating the various switches 1 of the portable device.
First, a case where the request switch 10 is operated will be described.

A user of the vehicle carries the portable device in a pocket or a bag, approaches the vehicle, and presses the request switch 10 provided on the outside of the vehicle. In this case, it is assumed that the request switch 10 that unlocks the door is pressed.
Then, when the keyless controller 7 detects this operation input, the LF transmission antenna 6 transmits to the portable device data that the occupant detection unit 104 of the communication data 100 shown in FIG.

In the portable device, this data is received by the LF receiving antenna 4, and information including the stored ID data is generated as a response reply by the processing of the microcomputer 21, and the radio signal to the RF wave is generated by the RF circuit 22. Convert and transmit from RF transmit antenna.
On the vehicle side, the signal is received by the RF receiving antenna 5, ID verification is performed by the keyless controller 7, and if authentication is established, a control command is output to the BCM 8, the actuator 9 is operated, and the vehicle door is unlocked.

Next, the case where the user of the vehicle operates, for example, the unlock switch 12 among the various switches 1 of the portable device will be described.
When the microcomputer 21 of the keyless remote controller 2 detects an operation input from the unlock switch 12, the microcomputer 21 of the keyless remote controller 2 transmits a signal for requesting unlocking of the door from the RF transmitting antenna 3 via the RF circuit 22.

  On the vehicle side, this signal is acquired by the RF receiving antenna 5, and when the information is detected by the keyless controller 7, the occupant detection unit 104 of the communication data 100 shown in FIG. Transmit from the antenna 6.

In the portable device, this data is received by the LF receiving antenna 4, and information including the stored ID data is generated as a response reply by the processing of the microcomputer 21, and the radio signal to the RF wave is generated by the RF circuit 22. Convert and transmit from RF transmit antenna.
On the vehicle side, the signal is received by the RF receiving antenna 5, ID verification is performed by the keyless controller 7, and if authentication is established, a control command is output to the BCM 8, the actuator 9 is operated, and the vehicle door is unlocked.

[Unnecessary power consumption of portable devices]
Here, useless power consumption of the portable device in the door lock control device of the keyless system will be described.
The portable device (remote control) in the keyless system is convenient and can be used without the actual key operation because the user can use it while it is in a pocket or a bag.

However, if the portable device is left in a pocket or a bag, one of the various switches 1 provided on the portable device may be pushed unexpectedly due to something.
Then, useless radio waves are transmitted from the portable device, and depending on the situation, it is pushed many times.

Since the portable device consumes the battery most when transmitting radio waves, in such a case, power consumption is unnecessarily increased. Then, as a result, the battery runs out quickly, and a good keyless operation is hindered.
In the first embodiment, these problems are solved.

[Power consumption suppression processing]
(Vehicle side processing)
FIG. 3 is a flowchart showing the flow of control processing executed by the vehicle-side keyless controller of the door lock control apparatus according to the first embodiment. Each step will be described below.

  In step S11, it is determined whether or not an occupant is detected. If detected, the process proceeds to step S12, and if not detected, the process proceeds to step S17.

  In step S12, occupant detection data is transmitted to the portable device.

  In step S13, ID data from the portable device is received as a response to the process in step S12, and it is determined whether authentication is established. If authentication is established, the process proceeds to step S14. If authentication is not established, the process returns to step S12.

  In step S14, it is determined whether or not occupant detection has been cancelled. If it has been cancelled, the process proceeds to step S15, and if not cancelled, the process returns to step S14.

  In step S15, the release data is transmitted to the portable device.

  In step S16, ID data from the portable device is received as a response to the processing in step S15, and it is determined whether or not authentication is established. If authentication is established, the process proceeds to step S17. If authentication is not established, the process returns to step S15.

  In step S17, normal keyless processing is performed.

  (Processing on the mobile device side)

  FIG. 4 is a flowchart showing a flow of control processing executed by the microcomputer on the portable device side of the door lock control device of the first embodiment. Each step will be described below.

  In step S21, it is determined whether or not there is data reception. If there is reception, the process proceeds to step S22, and if there is no reception, the process ends.

  In step S22, it is determined whether or not the data is an occupant detection. If the data is detected, the process proceeds to step S23. If the data is not detected, the process ends.

  In step S23, the ID data of the received data is collated, and it is determined that the received data is the data for itself. If ID data collation is established, the process proceeds to step S24, and if ID data collation is not established, the process is terminated.

  In step S24, the stored ID data is transmitted to the vehicle side.

  In step S25, even if there is an operation input to the various switches 1, a process for invalidating the input is performed so as not to transmit to the vehicle side that requests the operation.

  In step S26, it is determined whether or not the data for canceling the passenger detection is received. If the release data is received, the process proceeds to step S27. If the release data is not received, the process returns to step S25.

  In step S27, the ID data of the received data is collated, and it is determined that the data is for itself. If ID data collation is established, the process proceeds to step S28, and if ID data collation is not established, the process is terminated.

  In step S28, when there is an input to the various switches 1, a process for returning the operation request to the vehicle to a valid state is performed.

  In step S29, the stored ID data is transmitted to the vehicle side.

  In step S30, normal keyless processing is performed.

[Suppressing wasteful power consumption]
In the door lock control device according to the first embodiment, the communication data 100 including the data 104 indicating that the occupant is detected from the keyless controller 7 when the vehicle user sits on the seat and is detected by the occupant detection sensor 15 is LF transmitted. It is transmitted from the antenna 6 to the portable device side (S11, S12).

The portable device side receives this communication data with the LF receiving antenna 4 and knows that the occupant has been detected by the microcomputer 21.
Then, the microcomputer 21 generates and transmits data including ID data stored on the portable device side by RF radio waves from the RF transmission antenna 3 for ID verification (S21, S22, S23, S24). .

The vehicle side receives data including ID data by the RF receiving antenna 5 and performs ID collation. That is, after transmitting the occupant detection data, the vehicle side can confirm that the occupant detection data is acquired by the portable device side by collating ID transmission from the portable device side (S13).
Thereafter, the microcomputer 21 detects that an occupant is detected, and on the condition that the ID data is transmitted, the transmission signal is not transmitted from the RF transmission antenna 3 even if there are subsequent operation inputs to the various switches 1 on the portable device side ( S25).
This eliminates unnecessary transmission and suppresses unnecessary power consumption on the portable device side. As a result, it is possible to prevent the battery from running out quickly and to keep a good keyless operation for a long time.

Further, in the door lock control device of the first embodiment, transmission by a switch input from the portable device is prohibited. However, since bidirectional communication itself can be used normally, communication is necessary. Can quickly return to the normal communication state.
That is, in the first embodiment, two-way communication itself is possible, so that the operation with the various switches 1 of the portable device can be performed immediately after the occupant detection is canceled (S14, S15, S26, S27, S28). ).

  Specifically, when there is no occupant due to an input from the occupant detection sensor 15, if a signal indicating that is sent from the keyless controller 7 immediately to the portable device, it can be released by the portable device. Operation with various switches 1 becomes possible from the time.

Next, the effect will be described.
In the door lock control device of the first embodiment, the following effects can be obtained.

  (1) In a door lock control device that locks / unlocks a vehicle door without key operation by performing communication authentication between the portable device carried by the vehicle user and the vehicle side device, the portable device An RF transmission antenna 3, an LF reception antenna 4, a keyless remote control unit 2, an RF reception antenna 5, an LF transmission antenna 6, and a keyless controller 7 of a portable device that allow two-way communication with the vehicle side device An occupant detection sensor 15 for detecting an occupant in the passenger compartment, a process for adding information indicating that an occupant has been detected to information to be sent to a portable device provided by a keyless controller on the vehicle side, and information indicating that an occupant has been detected And the processing provided in the portable device to prohibit transmission to the vehicle side for the switch operation in the portable device, which is performed by the microcomputer 21 of the portable device. It is possible not to consume the battery of the band machine.

  As mentioned above, although the door lock control apparatus of this invention has been demonstrated based on Example 1, it is not restricted to these Examples about a concrete structure, The invention which concerns on each claim of a claim Design changes and additions are allowed without departing from the gist.

For example, the various switches 1 may be only one of the lock switch 11, the unlock switch 12, the trunk switch 13, and the panic switch 14 used in the first embodiment, or a switch provided with another switch. But you can.
Further, the door lock control device may be a keyless system to which other functions are added.
For example, the engine start is permitted by the authentication of the portable device and the vehicle side device.

1 is a system block diagram of a door lock control device of Embodiment 1. FIG. It is explanatory drawing of the communication data transmitted from the vehicle side in the door lock control apparatus of Example 1 to the portable device side. It is a flowchart which shows the flow of the control processing performed with the keyless controller by the side of the vehicle of the door lock control apparatus of Example 1. FIG. It is a flowchart which shows the flow of the control processing performed with the microcomputer by the side of the portable device of the door lock control apparatus of Example 1. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Various switches 11 Lock switch 12 Unlock switch 13 Trunk switch 14 Panic switch 2 Keyless remote control part 21 Microcomputer 22 RF circuit 3 RF transmission antenna 4 LF reception antenna 5 RF reception antenna 6 LF transmission antenna 7 Keyless controller 8 BCM
9 Actuator 10 Request switch 15 Occupant detection sensor

Claims (1)

In the door lock control device that locks and unlocks the door of the vehicle without key operation by performing authentication processing by communication between the portable device carried by the vehicle user and the vehicle side device,
Communication means for allowing the portable device and the vehicle-side device to communicate bidirectionally;
Occupant detection means for detecting occupants in the passenger compartment;
Information adding means provided on the vehicle side so as to add information indicating that an occupant has been detected to information sent to the portable device;
Prohibiting means provided in the portable device to prohibit transmission to the vehicle side with respect to a switch operation in the portable device when obtaining information indicating that an occupant has been detected;
A door lock control device comprising:

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