JP2014218859A - Control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a control system that prevents a portable device from being locked in a vehicle due to the leakage of electromagnetic waves in the vehicle when door locking/unlocking is performed by communication between the portable device and the vehicle.SOLUTION: A specified period from when a vehicle door is closed, is defined as an ineffective period of NFC function, and door locking is not performed even when a smartphone A is detected by the vehicle at a time t4 during the ineffective period. At a time t5 after the ineffective period passes, when a smartphone B is detected, door locking is performed. Thus, even when a detection at the time t4 is based on the smartphone A in the vehicle which has moved into the reaching range of electromagnetic waves internally-leaked from an NFC reader from outside the reaching range due to vibration of the vehicle caused by door closing, this prevents the smartphone from being locked in the vehicle without incorrectly identifying the detection as an operation from the smartphone outside the vehicle.

Description

  The present invention relates to a control system.

  A system for locking and unlocking a door of a vehicle and starting an engine using a device having a wireless communication function carried by a user has become widespread. The embodiment includes a so-called wireless keyless system, a smart key system, and a form using NFC (Near Field Communication).

  In the case of the form using NFC, specifically, for example, an NFC reader is provided in a triangular window portion of a vehicle, and an IC having an NFC function is provided in a communication device (for example, a smartphone) carried by the user. Then, when an electromagnetic wave is output from the NFC reader of the vehicle and a user outside the vehicle holds the smartphone over the reach of the electromagnetic wave, the IC of the smartphone modulates the received electromagnetic wave. When the modulated electromagnetic wave is received by the NFC reader and authenticated as being modulated by a regular smartphone of the vehicle, the door of the vehicle is locked (locked) or unlocked (unlocked).

  In addition, for example, an NFC reader is mounted on a dock for starting an engine in a vehicle interior, and a user places a smartphone on the dock in a state where electromagnetic waves are transmitted toward the vehicle interior, and the electromagnetic waves received by the smartphone are modulated. If the NFC reader authenticates that it is a modulation by a regular smartphone, the engine is started by a user's button operation or the like.

  In this way, in a system that locks and unlocks a vehicle door and starts an engine by wireless communication between a communication device (portable device) carried by a user and the vehicle, the vehicle is lost or the portable device is confined in the vehicle. If the door is locked, the subsequent door locking / unlocking and engine starting may be hindered. For example, Patent Document 1 below discloses a system having a configuration in which a communication terminal that transmits second identification data is separately provided in case the portable device is lost.

JP 2007-132085 A

  In a system in which a door can be locked and unlocked by holding a portable device such as a smartphone from outside the vehicle as in the above-described system using NFC, an NFC reader is mounted on a triangular window of a vehicle, for example. Then, an electromagnetic wave is output from the NFC reader installed at this position to the outside of the vehicle, and the door is locked and unlocked by the above procedure.

  However, the electromagnetic wave output from the NFC reader provided in the triangular window of the vehicle is not only output to the outside of the vehicle but also leaks to the inside of the vehicle. Therefore, for example, when a portable device is placed near the NFC reader in the vehicle interior, communication by NFC is performed between the portable device and the electromagnetic wave leaking into the vehicle, and the door is locked. There is a possibility that the portable device will be locked in the vehicle. It is necessary to develop a technology that suppresses such closure of the portable device.

  Therefore, in view of the above, the problem to be solved by the present invention is to control the restraint of the portable device from being closed due to electromagnetic leakage in the vehicle when performing door locking and unlocking by communication between the portable device and the vehicle. To provide a system.

  In order to achieve the above object, a control system according to the present invention includes: a transmission unit provided in the vehicle that transmits a transmission electromagnetic wave toward a portable device possessed by a user and having a wireless communication function when the vehicle is stopped; Receiving the reply electromagnetic wave returned from the portable device that has received the transmission electromagnetic wave transmitted by the transmission means, and receiving means provided in the vehicle, and when the reception means receives the return electromagnetic wave, the vehicle Permission means for permitting a predetermined operation, acquisition means for acquiring presence information that is information indicating that the portable device is present in the vehicle after stopping, and when the acquisition means acquires the presence information, Invalidation means for invalidating the function of the permission means at least temporarily. According to this invention, since the portable device acquires information existing in the vehicle after stopping and invalidates a predetermined operation of the vehicle at least temporarily, for example, it is effective to close the portable device into the vehicle. Can be suppressed.

  The acquisition unit may include a first acquisition unit that acquires, as the presence information, information on reception of the return electromagnetic wave by the reception unit during a period in which a vehicle door is open. According to the present invention, by effectively using the reception information of the return electromagnetic wave within the period when the vehicle door is open, for example, the portable device can be effectively prevented from being locked in the vehicle.

  The acquisition unit may include a second acquisition unit that acquires, as the presence information, information on reception of the return electromagnetic wave by the reception unit within a predetermined period after the door of the vehicle is closed. According to the present invention, by effectively using information on reception of a return electromagnetic wave within a predetermined period after the door of the vehicle is closed, for example, closing of the portable device into the vehicle can be effectively suppressed.

  In addition, the transmission unit includes an adjustment unit that adjusts the intensity of the transmitted electromagnetic wave within a predetermined period after the vehicle door is closed to be relatively stronger than the intensity of the transmitted electromagnetic wave after the predetermined period. It is good. According to the present invention, by making the intensity of the transmitted electromagnetic wave relatively strong within a predetermined period after the vehicle door is closed, the portable device in the boundary area of the electromagnetic wave reachable range in the case of relatively weak electromagnetic wave intensity, It can be detected effectively within a predetermined period after the vehicle door is closed.

  The acquisition unit acquires the vibration information as the presence information when the vibration detected by the vibration detection unit included in the portable device is a vibration when the portable device is placed in a vehicle. It is good also as providing the 3rd acquisition means to do. According to the present invention, by effectively using the information on the vibration detection of the portable device, for example, the portable device can be effectively prevented from being locked in the vehicle.

The figure which shows the structural example in one Embodiment of the control system of this invention. The flowchart which shows the 1st example of the process sequence in a control system. The flowchart which shows the 2nd example of the process sequence in a control system. The flowchart which shows the 3rd example of the process sequence in a control system. The flowchart which shows the 4th example of the process sequence in a control system. The figure which shows the 1st example of the time transition by the process sequence of this invention. The figure which shows the 2nd example of the time transition by the process sequence of this invention. The figure which shows the 3rd example of the time transition by the process sequence of this invention. The figure which shows the example of the internal leakage of the electromagnetic waves from an NFC reader, and the movement of a portable device by the vibration of a vehicle.

  Embodiments of the present invention will be described below with reference to the drawings. First, FIG. 1 is a schematic diagram of an apparatus configuration of a vehicle control system 1 according to the present invention. A control system 1 (hereinafter, system) shown in FIG. 1 is configured across a vehicle 2 and a smartphone 3. The vehicle 2 includes an ECU 20 (electronic control unit), an NFC reader 21, a wireless communication unit 22, and a door lock mechanism 23 according to the present invention.

  The ECU 20 is a control device that performs overall information processing on the vehicle side according to the present invention. The ECU 20 includes the same structure as that of an ordinary computer, that is, a CPU that performs various calculations and a memory 200 that stores various information. The memory 200 may include a volatile storage unit (RAM) as a work area of the CPU and a nonvolatile storage unit that stores data and programs necessary for information processing by the CPU. The ECU 20 also includes a timer 201 having a time measuring function.

  The NFC reader 21 is a part that performs NFC (near field communication) with an NFC unit 32 of the smartphone 3 to be described later, and executes, for example, information reading processing of the NFC unit 32. For example, a plurality of NFC readers 21 are provided in each door portion (for example, a so-called triangular window portion in the case of a front door) in the vehicle 2. The wireless communication unit 22 has a function of performing wireless communication with a wireless communication unit 33 of the smartphone 3 described later. The type and standard of wireless communication are not particularly limited, but may be a wireless LAN related standard such as Bluetooth (registered trademark) or Wi-Fi (registered trademark). The door lock mechanism 23 is a part for locking or unlocking the door of the vehicle 2.

  The smartphone 3 includes a CPU 30, a memory 31, an NFC unit 32, a wireless communication unit 33, and an acceleration sensor 34 as a configuration related to the present invention. The CPU 30 is a part that controls overall information processing in the smartphone 3 and also performs overall information processing on the smartphone 3 side according to the present invention. The memory 31 includes a volatile storage unit (RAM) as a work area of the CPU 30 and a non-volatile storage unit that stores data and programs necessary for information processing in the CPU 30.

  The NFC unit 32 is a part that performs NFC communication with the NFC reader 21 of the vehicle 2. The details of communication by NFC may be the same as those of publicly known NFC. That is, a predetermined electromagnetic wave is output from the NFC reader 21 in a range of about 10 cm, for example, and when the NFC unit 32 enters the range, the electromagnetic wave is received by, for example, an antenna equipped in the NFC unit 32. The received electromagnetic wave generates an electromotive force in the NFC unit 32 based on the principle of electromagnetic induction, and the NFC unit 32 operates to perform various electrical processes. The NFC unit 32 modulates the electromagnetic wave output from the NFC reader 21 by a predetermined method.

  The ID information of each NFC unit 32 is included in the modulation method by the NFC unit 32. When the modulated electromagnetic wave is received by the NFC reader 21 and the authentication process is performed, the NFC reader 21 determines whether the NFC unit 21 exists in the electromagnetic wave reachable range and which NFC unit 21 it is. To detect. The NFC unit 32 may include various information other than the ID in the electromagnetic wave modulation method. Note that the NFC unit 32 may be operated by a battery or the like equipped in the smartphone 3.

  As described above, the wireless communication unit 33 performs wireless communication with the vehicle-side wireless communication unit 22 based on a predetermined wireless communication standard. The acceleration sensor 34 detects the vibration of the smartphone 3. The structure and detection principle of the acceleration sensor 34 may be the same as those known. As will be described later, the present invention also supports a situation where there are a plurality of smartphones 3.

  Based on the above configuration, the system 1 executes the processing according to the present invention. FIG. 2 shows a first example. In FIG. 2 and subsequent figures, a processing procedure relating to door locking is shown. The processing procedure on the vehicle side shown in FIG. 2 (or FIGS. 3 to 5 described later) may be programmed in advance and stored in the memory 200, for example, and the ECU 20 may call it and automatically execute it.

  In the processing procedure of FIG. 2, first, in S10, the ECU 20 determines whether or not the door of the vehicle 2 is opened. Information on the opening or closing of the door may be obtained from a courtesy switch mounted on the door. If the door is open (S10: Y), the process proceeds to S20. If the door is closed (S10: N), S10 is repeated to wait for the door to open.

  If progressing to S20, ECU20 will invalidate the NFC function in this system, ie, the function which locks a door, if a smart phone is detected by an NFC reader. In this invalidation procedure, the function of the NFC reader 21 may be stopped, but if the NFC reader 32 is detected by the NFC reader 21 while the NFC reader 21 is functioning, the door is not locked and the smartphone The procedure of storing the ID of 3 may be used.

  In S30, the ECU 20 determines whether or not the door of the vehicle 2 is in a closed state. Information on the closed state may be acquired from the courtesy switch. When it is in the closed state (S30: Y), the process proceeds to S70, and when it is still in the open state (S30: N), the process returns to S20 and the above procedure is repeated.

  By proceeding to S35, the NFC function is validated. If it progresses to S70, ECU20 will discriminate | determine whether it changed into the state detected from the state in which the smart phone was not detected by NFC. If there is a change (S70: Y), the process proceeds to S80. If there is no change (S70: N), S70 is repeated to wait for the change. Note that an affirmative determination in S70 implies that the smartphone has not been detected before the time of S70.

  After proceeding to S80, the ECU 20 locks the door of the vehicle 2. The above is the processing procedure of FIG. In the process of FIG. 2, when a smartphone is detected by the NFC reader 21 of the door before the door is closed, the knowledge that it can be regarded as a smartphone placed in a vehicle compartment is used. The process of FIG. 2 effectively suppresses the smartphone from being locked in the vehicle. Moreover, in order to respond | correspond appropriately to the holding operation | movement of the smart phone by a user, in S70, not only the detection of the smart phone 3, but the change from a non-detection to a detection is discriminate | determined.

  An example of the temporal transition when the processing procedure of FIG. 2 is executed is shown in FIG. The example of FIG. 6 is an example of a situation where there is one smartphone 3 (smartphone A) in the vehicle compartment of the vehicle 2 and the occupant possesses another smartphone 3 (smartphone B). The smartphone A is assumed to be within the reach of the internal leakage electromagnetic wave from the NFC reader 21 that outputs the electromagnetic wave to the outside of the passenger compartment.

  The electromagnetic wave output from the NFC reader 21 may be performed while the vehicle 2 is stopped, for example. Thereby, the smartphone A is detected by the NFC reader 21 before the door is opened at time t0. However, as shown in FIG. 6, according to the processing procedure of FIG. 2, the door lock based on the detection of the smartphone A is not performed after the door is closed at time t1 due to the invalidation process in S20.

  In the example of FIG. 6, the smartphone B is detected by the NFC reader 21 at time t2 after the door is closed. In the case of detection by the NFC reader 21, the ECU 20 grasps which smartphone is detected by ID verification. At time t2, the ECU 20 recognizes that the smartphone B is newly detected. Thus, the smartphone newly detected after the door is closed is recognized as a smartphone held by the user over the NFC reader 21 from outside the vehicle. Therefore, it is determined that the user has indicated the intention to lock the door from outside the vehicle, and the door is actually locked. That is, S70 is affirmed by detecting the smartphone at time t2, and thus the door is locked at time t2 in FIG.

  In this way, in the processing procedure of FIG. 2, if a smartphone different from the smartphone detected in S20 is detected in S70, it is regarded as a lock command from a user outside the vehicle and lock is executed. Here, it is considered that when a user outside the vehicle has the smartphone B, even if the previously detected smartphone A is confined in the vehicle, there will be no trouble in the subsequent locking and unlocking. . Further, in the example of FIG. 6, if the smartphone B is not detected after the door is closed, the door lock is not executed, so that the smartphone A can be prevented from being confined in the vehicle interior.

  In the processing procedure of FIG. 2, even if, for example, the smartphone A is detected in S50, the smartphone A becomes a non-detection state after that, and when the smartphone A changes from the non-detection state to the detection state in S70, the door is locked in S80. Is done. The reason for this is that the user's intention to lock the door may be indicated in the change from non-detection to detection. Therefore, even if the smartphone is detected before the door is closed for some reason, it is possible to preferentially respond to the user's intention regardless.

  Next, FIG. 3 shows an example of a second processing procedure in the present invention. In the processing procedure of FIG. 3, a predetermined period after the door is closed is a period for invalidating the NFC function. In the different flowcharts, the procedures with the same reference numerals may be performed in the same manner, and redundant description will be omitted. In the processing procedure of FIG. 3, S35 is deleted from FIG. 2, and the procedure of S40 to S61 is added. Prior to S30 in FIG. 3, S10 and S20 may be processed as in FIG.

  In S <b> 40 of FIG. 3, the ECU 20 starts counting by the timer 201. Thereby, the elapsed time from the door closing is counted. Subsequently, in S50, the ECU 20 invalidates the NFC function. In this procedure, the same process as in S20 may be executed. In the processing procedure of FIG. 3, the smartphone detected in S <b> 50 moves from outside the reach of electromagnetic leakage of the NFC reader 21 to within the range due to the vibration of the vehicle caused by closing the door of the vehicle or getting off the passenger. And that the smartphone was detected. An example of this is shown in FIG.

  In S60, the ECU 20 determines whether or not the count by the timer 201 started in S40 has reached a specified time. Here, the specified time is a period length from the time when the door is closed to the time when the vibration of the vehicle 2 due to the door is closed, and may be set appropriately in advance. If the timer count has reached the specified time (S60: Y), the process proceeds to S61. If the specified time has not been reached yet (S60: N), the process returns to S50 and the above procedure is repeated. After proceeding to S61, the NFC function is enabled.

  In the processing procedure of FIG. 3, it is considered that the vibration of the vehicle as described above has subsided after the time point when S60 becomes affirmative. Therefore, the smartphone detected in S70 of FIG. 3 is not due to the vibration of the vehicle, but is regarded as being held by the user outside the vehicle over the NFC reader 21 for door locking. Therefore, the door is locked at S80.

  An example of temporal transition when the processing procedure of FIG. 3 is executed is shown in FIG. In FIG. 7, time t3 is a time point when S60 becomes affirmative. That is, the length of the period (invalid period) from the door closing time t1 to t3 is the specified time.

  In the example of FIG. 7, the smartphone A is detected at time t4 within this invalid period. However, the detection of the smartphone A is within the invalid period, and as described above, the detection within the invalid period is considered to be caused by the vibration of the vehicle. In FIG. 3, the detection at time t3 is the detection at S50. For example, only the detected smartphone ID is stored, and the door is not locked.

  And smartphone B is detected at time t5. Since this detection is after the end of the invalid period, it is determined that this detection is a detection caused by being held over the NFC reader 21 by the user. In FIG. 3, S70 becomes an affirmative determination, and the door is locked in S80. As described above, the detection by the movement of the smartphone in the vehicle interior by the vibration after the door is closed can be appropriately invalidated by the processing procedure of FIG. Thus, the smartphone can be prevented from being closed.

  Next, FIG. 4 shows an example of a third processing procedure in the present invention. When the smartphone is placed in the vehicle interior, the place where the smartphone is placed may be a boundary region of the NFC internal leakage electromagnetic wave reachable range. When the smartphone in the boundary region moves due to the vibration of the vehicle caused by the door closing or the like, the non-detection state and the detection state by NFC are sensitively switched. Therefore, even after the invalid period of FIG. 3 ends, there is a possibility that a change from non-detection to detection occurs and it is erroneously recognized as a holding operation by a user from outside the vehicle. The processing procedure of FIG. 4 is devised to reduce such a possibility.

  Specifically, the procedures of S62, S63, and S65 are added to the procedure of FIG. 3 in the procedure of FIG. In the embodiment of FIG. 4, the electromagnetic wave output from the NFC reader 21 can be switched between a normal level (weak level) and a stronger level (strong level). In S62, the ECU 20 adjusts the electromagnetic wave output from the NFC reader 21 to a strong level.

  In S63, the ECU 20 determines whether or not the smartphone is detected at that time. When the smartphone is detected (S63: Y), the process proceeds to S65, and when the smartphone is not detected (S63: N), the process proceeds to S70. If S63 is affirmative, if no smartphone is detected in S50 within the specified time after the door is closed, or if a smartphone is detected in S50, but the smartphone is no longer detected at S63 Is included.

  After proceeding to S65, the ECU 20 adjusts the electromagnetic wave output from the NFC reader 21 to a normal level (weak level). When the smartphone is not detected in S63, the electromagnetic wave output from the NFC reader 21 remains at a high level. The procedure of S63 may be omitted, and if S60 is affirmative, the process may always proceed to S65.

  As described above, in the process of FIG. 4, the electromagnetic wave output from the NFC reader 21 is set to a strong level within a specified time from the door closing. As a result, when the electromagnetic wave output from the NFC reader 21 is at a normal level, the smartphone in the passenger compartment existing in the boundary region of the leaking electromagnetic wave arrival range is reliably detected within the specified time, and the detected smartphone is invalidated. .

  Therefore, even after the electromagnetic wave output is switched to the normal level, even if the smartphone in the boundary area moves due to vibration due to the door closing or the like, the smartphone is invalidated, so that the door is locked with an affirmative determination in S70. There is no, and the smartphone is prevented from being locked in the car.

  An example of the temporal transition when the processing procedure of FIG. 4 is executed is shown in FIG. In the example of FIG. 8, it is assumed that the smartphone A is placed in the boundary region of the reach range of the internal leakage electromagnetic wave when the electromagnetic wave output from the NFC reader 21 is a normal level. In the part of the temporal transition of the presence / absence of the detection of the smartphone A in FIG. 8, the solid line indicates that the NFC output is adjusted according to the process of FIG. 4, and the broken line indicates that the NFC output is always set to the weak level (normal level). It is shown.

  In the case of the broken line in FIG. 8, the smartphone A is not detected within the invalid period, but the smartphone A moves due to the vibration of the vehicle when the door is closed, and enters the in-leakage electromagnetic wave range at time t6 after the invalid period. Has been detected. Therefore, for example, when the process of FIG. 3 is performed, the vehicle door is locked at time t6 and the smartphone A is confined. On the other hand, in the case of the solid line by the processing of FIG. 4, since the electromagnetic wave output is at a strong level from the beginning of the invalid period, the smartphone A is detected within the invalid period.

  As a result, the door is not locked depending on the detection of the smartphone A, so that the smartphone A is prevented from being closed. In the example of FIG. 8, the smartphone B is held from outside the vehicle at time t7 and is locked. As described above, according to the processing of FIG. 4, the smartphone in the boundary region of the normal leaking electromagnetic wave reachable range of the NFC reader can also be detected within the invalid period by making the electromagnetic wave strong, so that the confinement in the vehicle is effective. Can be avoided.

  Next, FIG. 5 shows an example of a fourth processing procedure in the present invention. In the procedure of FIG. 5, vibration is detected on the smartphone side, and when the detected vibration is vibration specific to the smartphone placed in the vehicle, the information is wirelessly transmitted to the vehicle so that the door is not locked. The procedure on the smartphone side in the process of FIG. 5 may be programmed in advance and stored in the memory 31, and the CPU 30 may call it and automatically execute it.

  Specifically, in the process of FIG. 5, first, the CPU 30 of the smartphone 3 determines whether or not the wireless communication unit 33 has received information that the door of the vehicle 2 has been closed. The door closing information of the vehicle 2 may be wirelessly transmitted from the wireless communication unit 22 of the vehicle 2 according to a command of the ECU 20 when the closing of the vehicle door is detected by, for example, a courtesy switch. When the door closing information is received (S100: Y), the process proceeds to S110, and when the information has not been received yet (S100: N), S100 is repeated to wait for reception.

  After proceeding to S110, the CPU 30 determines whether or not a predetermined vibration has been detected by the acceleration sensor 34. Here, the prescribed vibration is vibration detected when the smartphone 3 is placed in the vehicle interior (described later). If the prescribed vibration is detected (S110: Y), the process proceeds to S120, and if the prescribed vibration is not detected (S110: N), the process proceeds to S130.

  After proceeding to S120, the CPU 30 stores information that the door lock is not permitted, for example, in the RAM portion of the memory 31. After proceeding to S130, the CPU 30 stores information that the door lock is permitted, for example, in the RAM portion of the memory 31. In S140, the CPU 30 wirelessly transmits the information stored in S120 or S130 that does not permit or permits the door lock. The wireless transmission here may be, for example, transmission by the wireless communication unit 33 or transmission by the NFC unit 32.

  In S75, the ECU 20 of the vehicle 2 determines whether or not the smartphone 3 is detected by the NFC reader 21. If it is detected (S75: Y), the process proceeds to S77. If it is not detected (S75: N), S75 is repeated to wait for detection.

  After proceeding to S77, the ECU 20 receives whether the door lock permission information has been received, that is, receives the information transmitted in S140, and determines whether it is door lock permission information. If the door lock permission information has been received (S77: Y), the process proceeds to S80. If the door lock permission information has not been received (S77: Y), S77 is repeated to wait for reception. After proceeding to S80, the ECU 20 commands the door lock of the vehicle 2.

  The prescribed vibration of S110 will be described. When the smartphone 3 is in the passenger compartment, the vibration of the vehicle due to the door closing is detected by the acceleration sensor 34. When the user who closed the vehicle door is carrying the smart phone 3, the acceleration sensor 34 detects the vibration of door closing and the vibration of user operation for door closing. When a user other than the person who closed the vehicle door is carrying the smartphone 3, the acceleration sensor 34 does not detect vibration synchronized with the door closing. Considering the above, it is considered that the vibration including the vibration of the vehicle due to the door closing and not including any other vibration is a vibration indicating that the smartphone 3 is in the vehicle interior.

  Therefore, the vibration that includes the vibration of the vehicle due to the door closing and does not include any other vibration may be set as the prescribed vibration in S110. Such vibration discrimination processing may be performed by analyzing a time waveform of vibration. Alternatively, it may be determined simply based on the vibration generation timing, and the vibration may be detected within a predetermined period including the door closing, and the vibration may not be detected before and after the predetermined period.

  The procedure shown in FIG. 5 determines whether or not a specific vibration when the smartphone is placed in the vehicle is detected, so that the door lock when the smartphone is placed in the vehicle is surely avoided. it can.

  In the above, the embodiment of the present invention has been described with respect to the door lock. However, in order to relate the above embodiment to the unlocking of the door, the following may be performed. In the above example, when it is detected that the smartphone A is placed in the vehicle, when another smartphone B is held from the outside of the vehicle, the door is locked regardless of the presence of the smartphone A. In this process, the smartphone A In addition to invalidating the door lock due to the presence of the door, the unlocking of the door may be invalidated. In this way, even if the smartphone A existing in the locked vehicle moves into the range from the outside leakage electromagnetic wave reachable range due to the vibration of the vehicle for some reason, the vehicle door is not unlocked.

  Embodiments of the present invention may be modified as appropriate without departing from the spirit and scope of the claims. For example, although the smartphone is used in the above-described embodiment, the present invention is not limited to this, and may be another mobile phone or a general device having a wireless communication function. Further, the NFC in the above embodiment may be extended to a door locking / unlocking method using radio between a vehicle and a communication device carried by the user so as to include a so-called smart key system.

1 Control System 2 Vehicle 3 Smartphone (Portable Machine)

Claims (5)

Sending means provided in the vehicle for sending out electromagnetic waves sent to a portable device possessed by a user and having a wireless communication function when the vehicle is stopped;
Receiving means provided in the vehicle for receiving a return electromagnetic wave returned from the portable device that has received the outgoing electromagnetic wave sent by the sending means;
Permission means for allowing a predetermined operation to the vehicle when the receiving means receives the return electromagnetic wave;
Acquisition means for acquiring presence information, which is information indicating that the portable device is present in the vehicle after stopping;
When the acquisition unit acquires the presence information, an invalidation unit that at least temporarily disables the function of the permission unit;
A control system characterized by comprising:   The control system according to claim 1, wherein the acquisition unit includes a first acquisition unit that acquires, as the presence information, information on reception of the return electromagnetic wave by the reception unit during a period in which a vehicle door is open.   3. The control according to claim 1, wherein the acquisition unit includes a second acquisition unit that acquires, as the presence information, information on reception of the return electromagnetic wave by the reception unit within a predetermined period after the door of the vehicle is closed. system.   The said transmission means is provided with the adjustment means which adjusts the intensity | strength of the said transmission electromagnetic wave in the predetermined period after the door closing of a vehicle so that it may become relatively stronger than the intensity | strength of the said transmission electromagnetic wave after the said predetermined period. 3. The control system according to 3.   The acquisition means acquires information on the vibration as the presence information when the vibration detected by the vibration detection means provided in the portable device is vibration when the portable device is placed in a vehicle. The control system according to claim 1, further comprising 3 acquisition means.

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