JP2012149473A - Electronic key - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic key for more smoothly executing control contents different from control contents being executed during executing control.SOLUTION: When intending to reverse the moving direction of a window, a user performs shaking operation. The shaking operation being uniform regardless of the control contents being executed can be reliably performed even in the state that the user gets mentally tense. The shaking operation simply requires continuous reciprocating motion of the electronic key 2 with no existence of a way such as the shaking direction or pattern of the electronic key 2, and so it is easily performed even in the state that the user gets mentally tense. Thus, the user can more smoothly reverse the moving direction of the window to inhibit an object from being held in the window.

Description

  The present invention relates to an electronic key capable of controlling a vehicle by remote control.

  Conventionally, an electronic key is provided with a plurality of operation switches on the surface thereof. Various control contents such as locking and unlocking of the vehicle door, opening and closing of the vehicle window, and opening and closing of the sliding door are assigned to each operation switch. Then, when the operation switch of the electronic key is operated, a signal to request various controls from the electronic key to the vehicle side is transmitted. The vehicle executes control of control contents according to the signal. Thereby, remote control of the vehicle through an electronic key is attained (for example, refer patent document 1).

  In recent years, with the diversification of in-vehicle functions, the number of electronic key switches tends to increase. This not only hinders the downsizing of electronic keys that require high portability, but also causes erroneous input due to unintended operations by the user, such as incorrect pressing of operation switches. Thus, for example, the electronic key described in Patent Document 2 is configured to be capable of remote control such as opening and closing of a sliding door, for example, by a swinging operation with the permission switch pressed.

JP 7-54525 A JP-A-9-303026

  In the electronic key system described in Patent Document 2, a swing operation pattern and control contents are associated with each other. That is, for example, when opening the slide door, the user performs the swing operation of the electronic key with the first swing pattern while operating the permission switch. Further, for example, when closing the slide door, the user performs the swing operation of the electronic key with the second swing pattern while operating the permission switch. Here, the user sometimes wants to cancel the control during the execution of the control. For example, the user immediately performs the second swing pattern when he / she notices that there is a possibility that an object may be pinched by the sliding door while the sliding door is moving in the closing direction. Thereby, the control related to the movement of the sliding door in the closing direction is canceled and switched to the movement in the opening direction. In such a case, since the user is in a mentally tense state, the user may not be able to immediately perform the second swing pattern associated with the sliding door closing operation.

  Also in the electronic key system described in Patent Document 1, it is not possible to immediately operate a switch corresponding to the opening operation of the sliding door from a plurality of switches provided on the electronic key while the sliding door is moving in the closing direction. Have difficulty. This is not limited to sliding doors, and the same applies to power windows, for example.

  In any of the electronic key systems described above, since the control is in a mentally tense state during the execution of the control, it is difficult to smoothly execute the control content different from the control content being executed.

  The present invention has been made in view of such circumstances, and an object thereof is to provide an electronic key that can more smoothly execute control contents different from the control contents being executed during control execution. It is in.

Hereinafter, means for achieving the above-described object and its operation and effects will be described.
According to a first aspect of the present invention, in the electronic key that is possessed by the user and that transmits a first control request signal for requesting control of the controlled object by a user operation, the first control request signal The gist of the present invention is to transmit a second control request signal different from the first control request signal when it is determined that a specific operation has been performed during a period in which control is being performed on the control target. .

  According to this configuration, when it is determined that a specific operation has been performed during execution of the control, the second control request signal is transmitted. This specific operation is the same regardless of the control content being executed, but can be reliably performed even when the user is in a state of mental urgency during control execution. Thereby, during control execution, the control content different from the control content under execution can be smoothly executed.

  According to a second aspect of the present invention, in the electronic key according to the first aspect, the controlled object controls an operation of the opening / closing body, and the second control request signal is an operation being executed. The gist of the signal is that it is a signal requesting cancellation or reversal.

  According to this configuration, the operation being performed in the opening / closing body can be canceled or reversed through a specific operation. As a result, when the control content being executed is a closing operation of the opening / closing body, the closing operation of the opening / closing body can be canceled or reversed through a specific operation, and thus the object can be prevented from being caught by the opening / closing body.

  The gist of the invention described in claim 3 is that in the electronic key according to claim 1 or 2, the presence or absence of the specific operation is determined through a detection result of a motion sensor that detects the movement of the electronic key. .

  According to this configuration, a specific operation can be performed by shaking the electronic key. Here, the swing operation is easily performed because it is not necessary to visually recognize the switch as compared with the switch operation. Thereby, even if the user is in a state of being mentally tense, a specific operation can be reliably performed.

  According to a fourth aspect of the present invention, in the electronic key according to the third aspect, the specific operation is a shake operation in which the electronic key is swung so as to continuously reciprocate.

  According to this configuration, the second control request signal is transmitted when the electronic key is shaken during the execution of the control. Here, the shake operation does not have a viewpoint of a swing direction or a swing pattern of the electronic key, and anyway, it is only necessary to continuously reciprocate the electronic key.

  According to a fifth aspect of the present invention, in the electronic key according to the third or fourth aspect, an unlock switch operated when transmitting an unlock request signal for requesting unlocking of the vehicle door, and the vehicle door A lock switch that is operated when a lock request signal indicating that the lock is requested is transmitted, and transmits the unlock request signal or the lock request signal when the unlock switch or the lock switch is operated. When the electronic key is recognized as being swung through the detection result of the motion sensor while the operation is maintained, the opening / closing body is moved in the direction of the swing operation as the first control request signal. When a signal indicating that the specific operation is performed is determined regardless of whether or not each switch is operated during the movement of the opening and closing body, Sending a signal requesting the travel direction of the reversal of the operation in progress cancellation or the closing body in the opening and closing member as a second control request signal is set to its gist.

  According to this configuration, when the electronic key is swung while the unlock switch or the lock switch is operated, the opening / closing body moves in the swing operation direction. For example, when the opening / closing body is moved in the closing direction by the swing operation, the user performs a specific operation (shake operation) when he / she notices that the object contacts the opening / closing body as it is. Thereby, the opening / closing body which has moved in the closing direction starts moving in the opening direction. When performing this specific operation, it is not necessary to operate the unlock switch or the lock switch. For this reason, the moving direction of the opening / closing body can be reversed instantly without the trouble of operating the switch with a blind eye.

  According to a sixth aspect of the present invention, in the electronic key according to any one of the third to fifth aspects, the motion sensor is an acceleration sensor that detects acceleration of the electronic key, and is detected through the acceleration sensor. The gist of the present invention is to determine that a shake operation has been performed when the acceleration of the electronic key deviates more than once within a predetermined time from a set range in which the acceleration is set to a constant width around zero.

  According to this configuration, the presence / absence of a shake operation can be easily determined based on the number of times that the acceleration of the electronic key deviates from the set range.

  According to the present invention, in the electronic key, during the control execution, it is possible to more smoothly execute the control content different from the control content being executed.

The block diagram of the electronic key system in 1st Embodiment. The perspective view of the electronic key in 1st Embodiment. The graph which shows transition of the acceleration in the 1-axis direction in 1st Embodiment. The graph which shows the transition criteria of the acceleration in 1st Embodiment, and the criterion of the presence or absence of a swing operation. The graph which shows the criteria of judgment of the transition of the acceleration in 1st Embodiment, and the presence or absence of a shake operation. The flowchart which shows the process sequence of the microcomputer in 1st Embodiment. The top view which showed the vehicle provided with the sliding door in 2nd Embodiment. The map which showed the control content requested | required according to the switch operated and swing direction in 2nd Embodiment. The top view which showed the user estimated position at the time of swing operation in 2nd Embodiment. The top view which showed the user direction estimation direction at the time of swing operation in 3rd Embodiment. The top view which showed the user direction estimation direction which validates the operation which concerns on the slide door in 3rd Embodiment.

(First embodiment)
A first embodiment in which the present invention is embodied in an electronic key system will be described below with reference to FIGS.

  As shown in FIG. 1, an electronic key system 1 is mounted on the vehicle of this embodiment. The electronic key system 1 is capable of unidirectional communication between an electronic key 2 (transmitting side) possessed by a vehicle user and an in-vehicle device 3 (receiving side) provided on the vehicle side.

  As shown in FIG. 2, the electronic key 2 includes a lock switch 27 that is operated when the vehicle door is locked on the surface thereof, and an unlock switch 26 that is operated when the vehicle door is unlocked. Yes. The lock switch 27 and the unlock switch 26 are push switches.

  The user can lock the vehicle door by pressing the lock switch 27. Furthermore, the user can move the window of the vehicle in the closing direction (upward) to make it fully closed by swinging the electronic key 2 while keeping the lock switch 27 pressed. it can. Further, the user can unlock the vehicle door by pressing the unlock switch 26. Furthermore, the user can move the vehicle window in the opening direction (downward) to the fully open state by swinging the electronic key 2 downward while keeping the unlock switch 26 pressed. it can. Further, the user can reverse the moving direction of the window by performing a shake operation while the window is moving. Hereinafter, the configuration of the electronic key system 1 will be described. Here, the shake operation is an operation in which the electronic key 2 is continuously shaken in a reciprocating manner.

(Electronic key 2)
As shown in FIG. 1, the electronic key 2 includes a microcomputer 23, a transmission circuit 24, a transmission antenna 25, and an acceleration sensor 21 in addition to the lock switch 27 and the unlock switch 26. The electronic key 2 incorporates a battery (not shown), and operating power is supplied to each part from the battery.

  The acceleration sensor 21 detects a voltage corresponding to the acceleration generated when the electronic key 2 is shaken, and outputs the detection result to the microcomputer 23. The acceleration sensor 21 in the present embodiment can detect acceleration in three axis directions (X axis, Y axis, Z axis in the XYZ coordinate system). The acceleration sensor 21 may be a mechanical type, an optical type, a semiconductor type, or the like, but may be any type as long as it can be incorporated in the electronic key 2 and can detect acceleration based on a swing operation.

  The microcomputer 23 includes a non-volatile memory 23a. In the memory 23a, various numerical values (setting range and setting time) as criteria for determining whether or not to perform a swing operation and a shake operation, and an ID code unique to the electronic key 2 are stored. (Identification code) is stored. The microcomputer 23 determines the presence / absence of the swing operation and the direction of the swing operation based on the detection result of the acceleration sensor 21, and determines the control content desired by the user based on the determination result. A method for determining the control contents based on the swing operation and the swing direction by the microcomputer 23 will be described in detail later. This swing operation is an operation different from the shake operation, and refers to an operation in which the electronic key 2 is shaken once upward or downward.

  When the unlock switch 26 is operated, an operation signal Su indicating that is output to the microcomputer 23, and when the lock switch 27 is operated, an operation signal S1 indicating that is output to the microcomputer 23. The operation signals Su and Sl continue to be output as long as the unlock switch 26 or the lock switch 27 is pressed, and the output stops when it is not pressed. The microcomputer 23 detects whether or not the unlock switch 26 or the lock switch 27 is operated based on whether or not the operation signals Su and Sl are input.

  Here, the microcomputer 23 supplies power to the acceleration sensor 21 in response to the input of any one of the operation signals Su and Sl, activates it, and based on the detection result of the acceleration sensor 21, whether or not the swing operation is performed and the swing operation Judgment of direction is started. The microcomputer 23 stops the supply of power to the acceleration sensor 21 when the operation signals Su and Sl cannot be detected. That is, the microcomputer 23 does not determine the presence / absence of the swing operation and the direction of the swing operation without supplying power to the acceleration sensor 21 during a period in which the operation signals Su and Sl are not detected.

  When the microcomputer 23 recognizes that the unlock switch 26 has been operated through the input of the operation signal Su, the microcomputer 23 generates an unlock request signal including an ID code and a code requesting to unlock the door. The data is output to the transmission circuit 24. The transmission circuit 24 modulates the unlock request signal input from the microcomputer 23 and transmits it as a radio signal in the UHF (Ultra High Frequency) band via the transmission antenna 25.

  Furthermore, the microcomputer 23 includes an ID code and a code requesting to open a window when it is determined that there is a downward swing operation in a state where the operation signal Su is continuously input. A window opening request signal is generated and output to the transmission circuit 24. The transmission circuit 24 modulates the window opening request signal input from the microcomputer 23 and transmits it as a UHF band radio signal via the transmission antenna 25.

  In addition, when the microcomputer 23 transmits the window opening request signal through the transmission circuit 24, the microcomputer 23 shifts to the panic detection mode. In this mode, based on the detection result of the acceleration sensor 21, the presence or absence of a shake operation that is continuously performed in a manner in which the swing operation reciprocates along a specific direction is determined. A method for determining the presence or absence of this shake operation will be described later. When the microcomputer 23 determines that a shake operation has been performed in the panic detection mode, the microcomputer 23 transmits a request signal to invert the window. That is, when the window opening request signal is transmitted by the swing operation, the window closing request signal is transmitted by the shake operation.

  In addition, when the microcomputer 23 recognizes that the lock switch 27 has been operated through the input of the operation signal Sl, the microcomputer 23 generates a lock request signal including an ID code and a code for requesting locking of the door, and transmits it. Output to the circuit 24. The transmission circuit 24 modulates the lock request signal input from the microcomputer 23 and transmits it as a UHF band radio signal via the transmission antenna 25.

  Further, the microcomputer 23 includes an ID code and a code requesting to close the window when it is determined that there is an upward swing operation in a state where the operation signal S1 is continuously input. A closing window request signal is generated and output to the transmission circuit 24. The transmission circuit 24 modulates the closing window request signal input from the microcomputer 23 and transmits it as a UHF band radio signal via the transmission antenna 25.

  In addition, when the microcomputer 23 transmits the closing window request signal through the transmission circuit 24, the microcomputer 23 shifts to the panic detection mode. In the panic detection mode, when the microcomputer 23 determines that the shake operation has been performed as described above, the microcomputer 23 transmits a window opening request signal through the transmission circuit 24.

  In the panic detection mode, the lock request signal or the unlock request signal is not transmitted even if the operation signals Sl and Su are input. In the panic detection mode, it is determined whether or not a shake operation has been performed regardless of the presence or absence of the operation signals Sl and Su.

(In-vehicle device)
The in-vehicle device 3 includes a reception antenna 31, a reception circuit 32, and an in-vehicle control unit 33. The receiving antenna 31 receives various request signals (locking request signal, unlocking request signal, opening window request signal, closing window request signal) transmitted from the electronic key 2. The receiving circuit 32 demodulates various requests received through the receiving antenna 31 and outputs them to the in-vehicle control unit 33.

The in-vehicle control unit 33 includes a nonvolatile memory 33a, and the memory 33a stores the same ID code as the ID code of the electronic key 2.
The in-vehicle control unit 33 collates the ID code included in various request signals from the receiving circuit 32 with the ID code stored in the memory 33a. When the signal from the receiving circuit 32 is an unlock request signal, the in-vehicle controller 33 unlocks the vehicle door through the door control device 40 when the ID code verification is established.

Further, when the signal from the receiving circuit 32 is a lock request signal, the in-vehicle controller 33 locks the vehicle door through the door control device 40 when the ID code verification is established.
When the signal from the receiving circuit 32 is the opening window request signal and the ID code verification is established, the in-vehicle control unit 33 moves the window in the opening direction through the power window device 41 until the window is fully opened.

  When the signal from the receiving circuit 32 is a closing window request signal and the ID code is verified, the in-vehicle control unit 33 moves the window in the closing direction through the power window device 41 until the window is fully closed.

  In addition, when the vehicle-mounted control unit 33 receives a new window closing request signal or window closing request signal while the window is moving, the in-vehicle control unit 33 prioritizes this signal before the window is fully closed or fully opened. Reverse the direction of movement.

Next, a method for determining the direction of the swing operation of the electronic key 2 by the microcomputer 23 will be specifically described.
The direction of the swing of the electronic key 2 in each axial direction can be determined by the plus or minus of the output signal (voltage value) that is the detection result of the acceleration in each axial direction from the acceleration sensor 21. This makes it possible to determine which direction the electronic key 2 is swung up and down.

  As illustrated in FIG. 2, the XYZ axes at which the acceleration sensor 21 detects acceleration with respect to the electronic key 2 are set to be orthogonal to each other. Specifically, the X-axis is in the direction along the long side of the electronic key 2, the Y-axis is in the direction along the short side of the electronic key 2, the Z-axis is in the direction perpendicular to the surface on which the switches 26 and 27 of the electronic key 2 are provided, Are each extended.

  As shown in FIG. 3, the movement of the electronic key 2 is the same when the output signal (voltage value), which is the detection result of acceleration in the predetermined axis direction by the acceleration sensor 21, is positive or negative. The direction is the opposite direction. For example, as shown in FIG. 2, a case will be described in which the electronic key 2 is swung in the gravitational direction in a state where the Z-axis direction of the electronic key 2 coincides with the gravitational direction. As shown in FIG. 3, in the direction of gravity, different signals (voltage values) are generated depending on whether the signal is shaken upward or when it is shaken downward. Specifically, the microcomputer 23 determines that it is swung upward when the voltage is positive, and determines that it is swung downward when the voltage is negative.

  As shown in FIG. 4, the microcomputer 23 determines that a swing operation has been performed when acceleration that deviates from the first set range A is detected over the first set time T1. The first set time T1 and the first set range A are stored in advance in the memory 23a of the microcomputer 23. Here, compared with the vibration etc. accompanying walking illustrated by the two-dot chain line in FIG. The first setting range A is a range that includes acceleration due to vibration accompanying walking, for example, by simulation, and is set so that the acceleration that accompanies the swing operation deviates from the first setting range A.

  If the acceleration detected by the acceleration sensor 21 does not deviate from the first setting range A, or if the state does not continue for the first setting time T1 even if deviating from the first setting range A, the microcomputer 23 does not determine that the swing operation has been performed.

Next, a method for determining the presence / absence of the shake operation of the electronic key 2 by the microcomputer 23 will be described.
As shown in FIG. 5, the memory 23 a of the microcomputer 23 stores a second setting range B that is smaller than the first setting range A. The second setting range B is set around zero acceleration.

  When the microcomputer 23 shifts to the panic detection mode, the presence or absence of a shake operation is performed by counting the number of times that the detected acceleration deviates from the second set range B until the second set time T2 elapses from the start of the mode. Judging. The second set time T2 is set to a time required for the window to change from the fully closed state to the fully open state. The microcomputer 23 counts the number of times the detected acceleration deviates from the second setting range B, and determines that a shake operation has been performed when the count reaches a threshold value. In this example, the threshold value is set to “6” as indicated by the circled numbers in FIG. The determination of the presence or absence of the shake operation is performed for the acceleration on each of the X axis, the Y axis, and the Z axis.

  Next, the processing procedure of the microcomputer 23 will be described with reference to the flowchart of FIG. This flowchart is started when the operation signals Sl and Su are input through the operation of the lock switch 27 or the unlock switch 26.

  A lock request signal or an unlock request signal is transmitted according to the input operation signals Sl and Su (S101). Then, it is determined whether or not the operation signals Sl and Su are continuously input (S102). When it is determined that the operation signals Sl and Su are not continuously input (NO in S102), that is, when the push operation of the lock switch 27 or the unlock switch 26 is released, a window opening request signal or the like is transmitted. The flowchart is terminated without doing so. When it is determined that the operation signals S1 and Su are continuously input (YES in S102), that is, when the lock switch 27 or the unlock switch 26 is kept pressed, the swing operation is performed. Presence / absence is determined (S103).

  If it is determined that there is no swing operation (NO in S103), the flowchart is ended without transmitting a window opening request signal or the like. If it is determined that there is a swing operation (YES in S103), the swing operation direction is determined (S104). After the window opening request signal or the window closing request signal is transmitted according to the swinging operation direction (S105), the panic detection mode is entered.

  In this panic detection mode, it is determined whether or not the second set time T2 has elapsed since the start of this mode (S106). If it is determined that the second set time T2 has not elapsed (NO in S106), the presence / absence of a shake operation is determined (S107).

  When it is determined that there is no shake operation (NO in S107), it is determined again whether the time from the start of the panic detection mode has passed the second set time T2 (S106). That is, the presence / absence of a shake operation is determined over the second set time T2. When it is determined that there is a shake operation (YES in S107), a window opening request signal or a window closing request signal different from the signal transmitted in step S105 is transmitted (S108). Specifically, if a window opening request signal is transmitted in step S105, a window closing request signal is transmitted in step S108. If a window closing request signal is transmitted in step S105, the window opening request signal is transmitted in step S108. A window request signal is transmitted (S108). Then, the flowchart is ended. The signal transmitted in step S105 corresponds to the first control request signal, and the signal transmitted in step S108 is a second control request signal and a signal requesting inversion of the operation being executed. Equivalent to.

  When it is determined that the second set time T2 has elapsed since the start of the panic detection mode (YES in S106), the flowchart is terminated without transmitting a window opening request signal or the like.

Next, a series of operations of the electronic key 2 by the user will be described.
First, when getting on, the user presses the unlock switch 26 of the electronic key 2. Further, to open the window, the electronic key 2 is swung downward while keeping the unlock switch 26 pressed. At this time, an unlock request signal and a window opening request signal are sequentially transmitted from the electronic key 2. As a result, the in-vehicle control unit 33 opens the window downward after unlocking the vehicle door.

  When getting off, the user presses the lock switch 27 of the electronic key 2. Further, in order to close the window, the electronic key 2 is swung upward while keeping the lock switch 27 pressed. As a result, a lock request signal and a closing window request signal are sequentially transmitted from the electronic key 2. As a result, the in-vehicle controller 33 moves the window in the closing direction after locking the vehicle door. In the closing operation of the window, for example, when the user notices that an object is sandwiched between the window and the window frame in this state, the user performs a shake operation on the electronic key 2. As a result, a window opening request signal is transmitted from the electronic key 2, and based on this, the window that has been moved in the closing direction is moved in the opening direction.

  Here, the shake operation can be performed immediately even when the user is mentally tense. This is because the shake operation direction of the shake operation is not determined, and it is only necessary to continuously perform the swing operation. Further, the shake operation is different from the above swing operation because it is not necessary to press the lock switch 27 or the unlock switch 26. That is, there is no need to press and operate the lock switch 27 etc. during the shake operation. Therefore, it is possible to more smoothly suppress the object from being caught by the window.

  In addition, it is less likely that it is determined that the shake operation has been performed without the user's intention compared to a normal swing operation, for example. Although it is assumed that the acceleration applied to the electronic key 2 is out of the second setting range B due to various external factors, it is considered that such acceleration is continuously detected a plurality of times. This is because it is difficult.

As described above, according to the embodiment described above, the following effects can be obtained.
(1) The user performs a shake operation to reverse the moving direction of the window. This shake operation is the same regardless of the content of the control being executed, but can be reliably performed even when the user is in a mentally tense state. Further, the shake operation does not have the viewpoint of the swing direction or the swing pattern of the electronic key 2, and anyway, the electronic key 2 may be continuously reciprocated anyway, so that it can be easily performed even in a mentally tight state. Thereby, the moving direction of the window can be reversed more smoothly, and the object can be prevented from being caught by the window.

  (2) When performing the shake operation, it is not necessary to operate the unlock switch 26 or the lock switch 27. For this reason, there is no need to operate the switch after silently, and the moving direction of the slide door or the like can be reversed immediately.

  (3) The presence / absence of the swing operation is determined only when the lock switch 27 or the unlock switch 26 is operated. Therefore, it is possible to prevent an erroneous input due to a determination that an operation that the user does not intend to perform is a swing operation.

  (4) When the user gets off, the user operates the lock switch 27 to lock the vehicle door. The user performs a swing operation while keeping the operation state of the lock switch 27 after locking, so that the microcomputer 23 fully closes the window. Thus, the user can make the state of the vehicle an initial state suitable for the user to get off and leave the vehicle by a continuous operation from the locking of the vehicle door. Further, since the lock switch 27 has an image of being locked, that is, “closed”, it can be understood that if the swing operation in a state where the lock switch 27 is operated sensuously is a window, the lock switch 27 is closed.

  (5) When the user gets on the vehicle, the user operates the unlock switch 26 to unlock the vehicle door. The user can swing the microcomputer 23 by opening the window by keeping the operation state of the unlock switch 26 after unlocking. Further, since the unlock switch 26 has an image of unlocking, that is, “opening”, it can be understood that the user can open the swing operation in a state where the unlock switch 26 is operated sensuously if it is a window.

(Second Embodiment)
Hereinafter, a second embodiment of the present invention will be described with reference to FIGS. This embodiment is different from the first embodiment in that the sliding door is controlled to be opened and closed by an electronic key swing operation. Hereinafter, a description will be given focusing on differences from the first embodiment. Note that the electronic key system of this embodiment has substantially the same configuration as the electronic key system of the first embodiment shown in FIG. Hereinafter, a description will be given focusing on differences from the first embodiment.

  As shown by a two-dot chain line in FIG. 1, the vehicle is provided with a sliding door device 42. Specifically, as shown in FIG. 7, a hinge door 7 is provided on the front side and a slide door 6 is provided on the rear side of both sides of the vehicle. The hinge door 7 can be opened and closed around a hinge 7a that is provided on the front side of the hinge door 7 and that extends in the vehicle height direction (paper surface direction in FIG. 7). The sliding door 6 can be opened and closed by sliding in the front-rear direction with respect to the vehicle.

  The sliding door 6 is provided with a door handle 8 at a position where the sliding door 6 can be operated from inside and outside, and the sliding door 6 can be manually opened and closed by pushing and pulling while holding the door handle 8. The sliding door 6 can be automatically opened and closed through a swinging operation of the electronic key 2. Hereinafter, when particularly necessary in the description, the right slide door 6 with respect to the traveling direction (forward direction) of the vehicle is referred to as a right slide door 6R, and the left slide door 6 is referred to as a left slide door 6L.

Next, a method for operating the electronic key 2 will be briefly described.
Similar to the first embodiment, the user can lock and unlock the slide door 6 and the hinge door 7 by pressing the unlock switch 26 or the lock switch 27 of the electronic key 2. Furthermore, the sliding door 6 can be automatically opened and closed in the same direction by swinging in the direction in which the sliding door 6 is desired to be moved while keeping the unlock switch 26 or the lock switch 27 pressed.

  Hereinafter, the operation of the microcomputer 23 will be mainly described. In the present embodiment, processing is performed in the same manner as in the first embodiment except that the types of signals transmitted in steps S105 and S108 in the flowchart of FIG. 6 are different.

Specifically, the microcomputer 23 receives the operation signals Su and Sl, and transmits an unlock request signal or a lock request signal through the transmission circuit 24.
Then, the microcomputer 23 determines the control content to be requested based on the swing operation direction in the state where the operation signals Sl and Su are detected in accordance with the map of FIG. 8 stored in its own memory.

  Specifically, the microcomputer 23 requests that the ID code and the left sliding door 6L be opened when it is determined that there is a swinging operation in the right direction as viewed from the user in the state where the operation signal Su is detected. An open left door request signal including the following code is generated and output to the transmission circuit 24. As shown in FIG. 7, when the unlock switch 26 is operated and shaken in the right direction as viewed from the user, it is limited to the left slide door 6 </ b> L that opens rightward as viewed from the user outside the vehicle. Is assumed to be swinging facing the left sliding door 6L.

  Further, when the microcomputer 23 detects the operation signal Su and determines that there is a swinging operation in the left direction as viewed from the user, the microcomputer 23 provides an ID code and a code requesting to open the right slide door 6R. An open right door request signal is generated and output to the transmission circuit 24. As shown in FIG. 7, when the unlock switch 26 is operated and shaken leftward as viewed from the user, it is limited to the right slide door 6 </ b> R that opens leftward as viewed from the user outside the vehicle. Is assumed to be swinging in opposition to the right sliding door 6R.

  Further, when the microcomputer 23 determines that there is a swinging operation in the right direction in the state where the operation signal Su is detected, the microcomputer 23 includes the ID code and the closing right including the code requesting to close the right sliding door 6R. A door request signal is generated and output to the transmission circuit 24. As shown in FIG. 7, when the lock switch 27 is operated and is swung in the right direction as viewed from the user, it is limited to the right slide door 6R that is closed in the right direction as viewed from the user outside the vehicle. It is assumed that the user performs a swing operation facing the right slide door 6R.

  If the microcomputer 23 detects that the operation signal Su is detected and determines that there is a leftward swing operation, the microcomputer 23 includes an ID code and a code indicating that the left slide door 6L is requested to be closed. A door request signal is generated and output to the transmission circuit 24. As shown in FIG. 7, when the lock switch 27 is operated and is swung leftward as viewed from the user, it is limited to the left slide door 6 </ b> L that closes leftward as viewed from the user outside the vehicle. It is assumed that the user performs a swinging operation facing the left slide door 6L.

  Here, although the swing direction of the electronic key 2 can be determined based on the detection result of the acceleration sensor 21, the standing position of the user is unknown only by the swing direction. It is not possible to judge whether it has been swung. Therefore, when the microcomputer 23 determines that the electronic key 2 has been swung, the microcomputer 23 calculates a swing trajectory based on the swing direction, and it is estimated that there is a user who swings the electronic key 2 based on the trajectory. The estimated user position 60 shown in FIG. 9 is calculated.

  Specifically, as shown in FIG. 9, when the electronic key 2 is shaken along the XY plane, the microcomputer 23 combines the acceleration in the XY axis direction detected by the acceleration sensor 21 to turn the swing direction. Judging. Here, when the electronic key 2 is swung non-linearly, the swinging direction changes from moment to moment. The microcomputer 23 calculates the trajectory of the swing of the electronic key 2 based on the change in the swing direction. Here, when the user shakes the electronic key 2 in the left-right direction, the locus of the swing is an arc shape when the user shakes it with a joint such as a shoulder, elbow or wrist. The microcomputer 23 calculates the center point of the arc as the user estimated position 60 based on the curvature of the arc that is the trajectory of the swing of the electronic key 2. By calculating the user estimated position 60, it is possible to determine whether the swing operation of the electronic key 2 has been made to the left or right direction with respect to the user (user estimated position 60).

  The transmission circuit 24 receives the open right door request signal, the open left door request signal, the close right door request signal, and the close left door request signal (hereinafter collectively referred to as various slide door request signals) input from the microcomputer 23. The signal is modulated and transmitted as a radio signal in the UHF band through the transmission antenna 25.

  When the microcomputer 23 transmits various sliding door request signals via the transmission circuit 24, the microcomputer 23 shifts to the panic detection mode. When the microcomputer 23 determines that a shake operation has been performed in the panic detection mode, the microcomputer 23 transmits various slide door request signals for reversing the slide door that is currently moving. For example, when the panic detection mode is entered after the closed right door request signal is transmitted, the open right door request signal is transmitted when a shake operation is performed in the same mode.

The receiving circuit 32 demodulates various sliding door request signals received through the receiving antenna 31 and outputs them to the in-vehicle control unit 33.
The in-vehicle control unit 33 opens the right sliding door 6R through the sliding door device 42 when the ID code included in the open right door request signal from the receiving circuit 32 is matched with the ID code stored in the memory 33a. Move in the direction. Hereinafter, similarly, the vehicle-mounted control unit 33 moves the left slide door 6L in the opening direction when the ID code verification is established for the open left door request signal. The vehicle-mounted control unit 33 moves the right slide door 6R in the closing direction when the ID code verification is established for the closed right door request signal, and the left slide door when the ID code verification is established for the closed left door request signal. 6L is moved in the closing direction. The in-vehicle control unit 33 moves the slide doors 6R and 6L until the opening and closing of the slide door is completed unless a new various slide door request signal is received during the movement of the slide doors 6R and 6L.

  When the in-vehicle control unit 33 receives a new various slide door request signal while the slide door 6 is moving, the in-vehicle control unit 33 opens and closes the slide door with priority on the new various slide door request signal. For example, the in-vehicle control unit 33 reverses the right slide door 6R in the opening direction when receiving the open right door request signal based on the shake operation while the right slide door 6R is moving in the closing direction. For this reason, similarly to 1st Embodiment, it is suppressed that an object is pinched | interposed into the slide door 6 based on shake operation.

In addition, when the sliding door 6 is opening, there is no risk of the pinching,
There is a possibility that the sliding door 6 moving in the opening direction may come into contact with an object. For this reason, when the user notices that the sliding door 6 is in contact with the object as it is, the sliding door 6 can be reversed to avoid the contact.

As described above, according to the embodiment described above, the following effects can be obtained.
(6) When the slide door 6 moves in the closing direction, if the user notices that the object is sandwiched between the slide door 6 and the slide door frame, the slide door 6 is moved by a shake operation. The door 6 can be moved in the closing direction. In this way, even in a state of being mentally tense, by enabling reversal of the moving direction of the slide door 6 through a shake operation, it is possible to suppress the object from being caught by the slide door 6.

  (7) If the user swings the electronic key 2 in the direction in which the slide door 6 is desired to move, the slide door 6 can be opened and closed in that direction. Therefore, a mistake in the swing direction is unlikely to occur, and an erroneous input based on a mistake in the swing operation direction can be prevented.

  (8) By calculating the user estimated position 60, it is possible to determine whether the swing operation of the electronic key 2 is in the opening direction or the closing direction of the slide door 6 with respect to the user (user estimated position 60). .

(Third embodiment)
A third embodiment in which the present invention is embodied in an electronic key system will be described below with reference to FIGS. The electronic key system according to this embodiment is different from the first embodiment in that the electronic key system includes means for preventing the sliding door 6 that is not a desired operation target from opening and closing when the swing direction is wrong. Yes. Hereinafter, a description will be given focusing on differences from the first embodiment. In addition, the electronic key system 1 of this embodiment is equipped with the structure substantially the same as the electronic key system 1 of 2nd Embodiment shown in FIG.

  As shown by a two-dot chain line in FIG. 1, the electronic key 2 is provided with a key side azimuth sensor 28 that detects the direction in which the electronic key 2 faces by using geomagnetism, and the in-vehicle device 3 also uses the geomagnetism. A vehicle-side azimuth sensor 35 that detects the azimuth of the vehicle is provided.

  The microcomputer 23 calculates the user estimated position 60 based on the swing trajectory of the electronic key 2 described in the second embodiment, and estimates that the user is facing based on the swing trajectory and the user estimated position 60. The user direction estimation direction 62, which is a direction to be calculated, is calculated. Generally, the user performs a swing operation of the electronic key 2 in front of the user. For example, as shown in FIG. 10, when the user swings the electronic key 2 to the left as viewed from the user, the user passes the electronic key 2 gripped with, for example, the right hand from the front right side to the front of the user. Shake until the front left side. Therefore, the microcomputer 23 estimates that the direction from the user estimated position 60 to the intermediate point 61 is the user direction, assuming that the intermediate point 61 that bisects the swing trajectory (the arc centered on the user estimated position 60) is the front of the user. Calculate as direction 62.

  The key side azimuth sensor 28 outputs a voltage (signal) corresponding to the azimuth to which it is directed to the microcomputer 23. Based on the voltage (signal) from the key side azimuth sensor 28, the microcomputer 23 calculates which direction the user direction estimation direction 62 of the electronic key 2 is oriented, that is, the user direction estimation azimuth. Then, the microcomputer 23 transmits the information on the estimated user orientation included in the open door request signal or the closed door request signal transmitted through the swing operation in the state where the unlock switch 26 or the lock switch 27 is operated. .

  The in-vehicle control unit 33 calculates the direction of the traveling direction of the vehicle based on the voltage (signal) from the vehicle side direction sensor 35. The in-vehicle control unit 33 can determine the orientation direction of the user with respect to the vehicle based on the calculated vehicle orientation and user orientation estimation orientation information. As shown in FIG. 11, the orientation direction of the user with respect to the vehicle can be omnidirectional toward the center of the vehicle so as to surround the outer periphery of the vehicle. The in-vehicle control unit 33 restricts the slide door 6 that can be operated depending on which direction the user is directed with respect to the vehicle.

  That is, in FIG. 11, a first allowable range 55 is formed on the right side of the vehicle, which is configured by the direction of the user in the direction indicated by the hatched arrow 51 in FIG. 11 facing the right slide door 6R. Is formed with a second permissible range 56 configured in the direction of the user in the direction indicated by the white arrow 52 in FIG. 11 facing the left sliding door 6L. Specifically, the first tolerance range 55 and the second tolerance range 56 are formed in a fan shape on the right side and the left side with respect to the vehicle, and belong to both the first tolerance range 55 and the second tolerance range 56 in the longitudinal direction of the vehicle. There are no areas. The sliding door 6 to be operated by the user can be determined based on which of the first allowable range 55 and the second allowable range 56 the user's orientation direction belongs to. For example, when the direction of the user belongs to the first allowable range 55, the operation target is limited to the right slide door 6R. That is, when the user direction is the direction belonging to the first allowable range 55, a swing operation performed when the left slide door 6L is operated, for example, the swing switch is pressed to the right while the unlock switch 26 is pressed. Even if it is a case, the vehicle-mounted control part 33 makes the operation invalid and does not perform control which opens the left slide door 6L.

  Similarly, when the direction of the user belongs to the second allowable range 56, the operation target is limited to the left slide door 6L. That is, if the direction of the user belongs to the second allowable range 56, the swing operation performed when the right slide door 6R is operated, for example, the swing switch is pressed to the left while the unlock switch 26 is pressed. Even if it is a case, the vehicle-mounted control part 33 makes the operation invalid and does not perform control which opens the right slide door 6R.

  If the direction of the user does not belong to any of the first tolerance range 55 and the second tolerance range 56 formed between the first tolerance range 55 and the second tolerance range 56, the in-vehicle control unit 33 assumes that there is no intention to open and close the slide door 6 and invalidates the swing operation.

  Actually, the locus of the swinging operation of the electronic key 2 is not centered on the user estimated position 60, but an arc is drawn around the user's shoulder, elbow, etc., so the actual user orientation and user orientation estimation direction 62. As a result, although there may be a slight shift in the direction of the user, the shift is not so large as to affect the determination of the slide door 6 to be operated.

  As described above, the operation of the slide door 6 using the electronic key 2 when the user is not facing the target slide door 6 is invalidated. Accordingly, erroneous opening / closing of the slide door 6 due to a wrong swing direction is prevented. In addition, when the slide door 6 is operated, the user is requested to face the slide door 6 to be operated, so that the slide door 6 which is not intended by the user is prevented from being opened and closed, and the security is improved.

As described above, according to the embodiment described above, the following effects can be obtained.
(9) The direction to the intermediate point 61 of the trajectory of the swing operation from the user estimated position 60 is set as a user direction estimated direction 62 which is a direction estimated that the user is facing. In a state in which the user orientation estimation direction 62 faces the slide door 6 related to the operation target, the opening / closing of the slide door 6 based on the swing operation of the electronic key 2 is enabled, and the user orientation estimation direction 62 is the slide related to the operation target. When the door 6 is not facing, the opening / closing of the sliding door 6 based on the swinging operation of the electronic key 2 is invalidated. Thereby, opening and closing of the sliding door 6 which a user does not intend is suppressed.

In addition, the said embodiment can be implemented with the following forms which changed this suitably.
In each of the above-described embodiments, at most one window opening request signal or window closing request signal is transmitted for one panic detection mode. However, a plurality of request signals may be transmitted in one panic detection mode. In this case, when it is determined that a shake operation has been performed (YES in S107), it is again determined whether or not the second set time T2 has elapsed since the start of the panic detection mode (S106). That is, the flowchart is ended only when the second set time T2 has elapsed. As a result, in the panic detection mode, for example, every time six swing operations (shake operations) are performed, the window opening request signal and the window closing request signal are alternately transmitted in the first embodiment. Also in the second and third embodiments, a signal for inverting the slide door 6 is alternately transmitted.

  In the first embodiment, the window can be opened / closed by swinging the electronic key 2, and in the second embodiment, the sliding door can be opened / closed by swinging the electronic key 2. However, the combination of both the above embodiments may allow the sliding door and the window to be opened and closed by swinging the electronic key 2. Also in this configuration, the swing operation direction of the electronic key 2 related to the window is the vertical direction, and the swing operation direction of the electronic key 2 related to the slide door is the horizontal direction, so the swing operation directions do not overlap.

  In each of the above embodiments, the presence or absence of the shake operation is determined based on the number of times the detected acceleration deviates from the second setting range B. However, the method for determining whether or not there is a shake operation is not limited to this. For example, it may be determined that the shake operation has been performed when the frequency of the detected acceleration becomes a certain value or more. Furthermore, the presence / absence of a shake operation may be determined in both the second setting range B and the frequency. Thereby, the accuracy of determination is improved.

  In the first embodiment, when the window closing request signal is transmitted in step S105, the window opening request signal is transmitted in step S108 in the panic detection mode. However, an inversion request signal may be transmitted in step S108. When the in-vehicle control unit 33 receives the inversion request signal through the receiving circuit 32, the in-vehicle control unit 33 inverts the moving direction of the currently moving window. That is, when the window is in a stopped state, the in-vehicle controller 33 ignores the signal even if it receives the inversion request signal. Similarly, in the second embodiment, an inversion request signal may be transmitted to invert the moving direction of the slide door. According to this configuration, it is only necessary to always transmit the same inversion request signal in step S108.

  In each of the above embodiments, the presence / absence of the shake operation is determined for the acceleration on each of the X axis, the Y axis, and the Z axis. However, the acceleration is not limited to three axes, and may be performed for acceleration on at least one of the X, Y, and Z axes.

  In each of the above embodiments, when the microcomputer 23 determines that the shake operation has been performed in the panic detection mode, the microcomputer 23 transmits a signal requesting opening / closing of the sliding door or window. However, when the microcomputer 23 determines that the shake operation has been performed in the panic detection mode, the microcomputer 23 may transmit a cancel signal indicating that the control currently being executed is to be stopped through the transmission circuit 24. In this case, the vehicle-mounted control unit 33 stops the movement of the slide door or the like when receiving the cancel signal. As a result, the object can be prevented from being caught by a slide door or the like as in the above embodiment.

  The shake operation in each of the above embodiments is not limited to the shake operation as long as it is a specific operation. For example, various sliding door request signals may be transmitted by an operation of hitting the electronic key 2. Specifically, the microcomputer 23 sets a threshold value larger than the acceleration generated in the electronic key 2 due to walking or the like. The acceleration (to be exact, the absolute value) of the electronic key 2 becomes equal to or greater than a threshold value through an impact when it is hit. When the microcomputer 23 determines that the hit operation has been performed because the acceleration is equal to or greater than the threshold value in the panic detection mode, as in the case of the shake operation (YES in step S107), the microcomputer 23 is illustrated in the flowchart of FIG. Process.

  Furthermore, the specific operation may not be an operation by the movement of the electronic key as described above. For example, the unlock switch 26 and the lock switch 27 may be operated simultaneously. Specifically, when the microcomputer 23 recognizes that the unlock switch 26 and the lock switch 27 are operated at the same time based on the operation signals S1 and Su, as in the case where the shake operation is performed (YES in step S107), FIG. The process shown in the flowchart of FIG. According to this configuration, the acceleration sensor 21 can be omitted.

  In each of the above embodiments, the presence or absence of the shake operation is determined in the panic detection mode even when the unlock switch 26 or the like is not operated. However, similar to the swing operation, the presence or absence of the shake operation may be determined only when the unlock switch 26 or the lock switch 27 is operated in the panic detection mode. In this case, an erroneous determination that the shake operation has been performed without the user's intention is further suppressed.

  In the above embodiments, the electronic key 2 is provided with the lock switch 27 and the unlock switch 26, but the number and type of switches are not limited to this. For example, in the second embodiment, a new switch operated when opening and closing the slide door may be provided. When various slide door request signals are transmitted through the operation of the new switch, the mode is shifted to the panic detection mode. For example, when the various sliding door request signals are closed right door request signals, if it is determined that a shake operation has been performed, an open right door request signal is transmitted.

  Further, the unlock switch 26 or the lock switch 27 may be omitted. In this case, for example, an unlock request signal or a lock request signal is transmitted from the electronic key 2 by performing a swing operation of the first pattern. Further, various sliding door request signals are transmitted from the electronic key 2 by performing the swing operation of the second pattern. The first and second patterns are patterns that draw a locus such as a circle or a triangle, for example. After the various sliding door request signals are transmitted, the mode is shifted to the panic detection mode. Thereafter, processing is performed in the same manner as in the above embodiments. In this configuration, for example, a touch sensor is provided on the electronic key 2 and only when it is determined that the user is holding the electronic key 2 based on the detection result of the touch sensor, a swing operation (including a shake operation) is included. ) May be determined. Thereby, it is possible to suppress erroneous determination that the swing operation has been performed.

  In each of the above embodiments, the window or slide door corresponding to the opening / closing body can be opened / closed by swinging while pressing the lock switch 27 or the unlock switch 26. However, the opening / closing body that can be operated by the swing operation is not limited to these, and may be a door mirror or a roof window. In the case of a door mirror, for example, the door mirror being deployed moves in the retracting direction by a shake operation. Thereby, it is suppressed that a door mirror contacts an object.

  In each of the above embodiments, the window or the like can be opened and closed by a swing operation, but may be a tilt operation. Here, the tilting operation of the electronic key 2 refers to an operation of tilting the electronic key 2 held by the user by moving the wrist or the like. As the detection means for detecting the tilt operation, an angular velocity sensor for detecting the angular velocity is suitable. In this configuration, the shake operation is an operation for continuously performing the tilt operation.

  In each of the above embodiments, in the panic detection mode, the window or the like can be moved in any of the opening and closing directions by a shake operation. However, in the panic detection mode, the moving direction of the window or the like accompanying the shake operation may be limited from the closing direction to the opening direction only. This is when there is a possibility that an object may be caught in the window, etc., when the window, etc. is moving from the opening direction to the closing direction, which is prevented by moving the window, etc. from the closing direction to the opening direction. Because it can. In this configuration, only the window opening request signal is transmitted in step S108.

  In the above embodiments, the microcomputer 23 determines whether or not there is a shake operation based on the detection result of the acceleration sensor 21 in the panic detection mode. However, the microcomputer 23 may transmit the detection result of the acceleration sensor 21 to the vehicle side as an acceleration information signal via the transmission circuit 24 and the transmission antenna 25 without determining whether or not there is a shake operation. In this case, the in-vehicle control unit 33 determines the presence or absence of a shake operation based on the acceleration information signal received via the reception antenna 31 and the reception circuit 32, and executes processing related to opening / closing of a window or the like based on the determination result. Similarly, the in-vehicle control unit 33 may perform the swing operation and the direction determination (S103, S104) in a state where the lock switch 27 or the unlock switch 26 is operated.

In each of the above embodiments, the swing operation direction when the lock switch 27 or the like is operated matches the moving direction of the window or the like. However, this may be different.
-In each above-mentioned embodiment, although the control object was a vehicle, it may be not only a vehicle but a house.

Next, the technical idea that can be grasped from the embodiment will be described together with the effects.
(A) The electronic key is carried by the user and transmits a control request signal for requesting control by the user's operation, and the control target executes the control in accordance with the received control request signal. In the system, when it is determined that a specific motion operation is performed through a detection result of the motion sensor provided in the electronic key and a detection result of the motion sensor provided in the electronic key. And a control device that transmits a cancel signal for requesting cancellation of the control during the control, when the control object receives the cancel signal in a period of executing the control according to the control request signal, An electronic key system that cancels the control.

  According to this configuration, when a cancel signal is received during a period in which control is executed through the control request signal, the control being executed is canceled. Thereby, for example, when the controlled object is a slide door, the moving slide door is stopped.

  DESCRIPTION OF SYMBOLS 1 ... Electronic key system, 2 ... Electronic key, 3 ... In-vehicle apparatus, 21 ... Acceleration sensor (motion sensor), 23 ... Microcomputer, 26 ... Unlock switch, 27 ... Lock switch, 33 ... In-vehicle control part, 41 ... Power window Device (opening / closing body), 42... Sliding door device (opening / closing body).

Claims (6)

In an electronic key that is possessed by a user and transmits a first control request signal for requesting control of a control target by a user operation,
A second control request signal different from the first control request signal is transmitted when it is determined that a specific operation has been performed during a period in which control is being performed on the control target through the first control request signal. To electronic key. The electronic key according to claim 1, wherein
The control object is to control the operation of the opening and closing body,
The second control request signal is an electronic key which is a signal for requesting cancellation or inversion of an operation being executed. The electronic key according to claim 1 or 2,
An electronic key that determines the presence or absence of the specific operation through a detection result of a motion sensor that detects the movement of the electronic key. The electronic key according to claim 3, wherein
The specific operation is an electronic key that is a shake operation in which the electronic key is swung so as to continuously reciprocate. The electronic key according to claim 3 or 4,
An unlock switch operated when transmitting an unlock request signal to request unlocking of the vehicle door;
A lock switch operated when transmitting a lock request signal for requesting lock of the vehicle door,
When the unlock switch or the lock switch is operated, an unlock request signal or a lock request signal is transmitted, and the electronic key is swung through the detection result of the motion sensor while the operation is maintained. When it is recognized, a signal indicating that the opening / closing body is to be moved in the direction of the swinging operation is transmitted as the first control request signal, and the operation of each switch is performed during the movement of the opening / closing body. Regardless of the presence or absence, when it is determined that the specific operation has been performed, the second control request signal is a signal to cancel the operation being performed in the opening / closing body or to request the reversal of the moving direction of the opening / closing body Send electronic key. In the electronic key as described in any one of Claims 3-5,
The motion sensor is an acceleration sensor that detects acceleration of the electronic key,
An electronic key that determines that a shake operation has been performed when the acceleration of the electronic key detected through the acceleration sensor has deviated more than once within a predetermined time from a setting range in which the acceleration is set to a constant width around zero. .

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