JP6148095B2 - Remote control system - Google Patents

Description

  The present invention relates to a remote operation system for remotely operating an in-vehicle device.

  2. Description of the Related Art Conventionally, a technique for providing an acceleration sensor in an electronic key, determining a movement generated in the electronic key from an output signal of the acceleration sensor, and controlling a vehicle based on the determination result is well known (see Patent Document 1, etc.). Patent Document 1 is a technique for identifying a carrier of an electronic key from movements (such as pace) generated in the electronic key and setting a vehicle environment (seat position, audio setting, etc.) for each user.

JP 2011-57156 A

  As an application example of Patent Document 1, for example, a remote operation in which a specific operation performed by a user using a body is detected by an acceleration sensor of an electronic key, and if the operation is valid, the remote operation of the vehicle is permitted or executed. The system is being considered. In this remote operation system, it is necessary to accurately determine the movement generated in the electronic key. That is, it is necessary to accurately determine whether the movement generated in the electronic key is a movement by a user operation when remotely operating the vehicle or a movement generated when the vehicle is normally carried.

  An object of the present invention is to provide a remote control system that can accurately determine a movement generated in an electronic key.

  The remote operation system that solves the above problem determines whether or not a movement intended for remote operation of the in-vehicle device has occurred in the electronic key based on a detection signal of an operation detection unit provided in the electronic key. In the configuration in which the in-vehicle device is remotely operated based on the determination result, a vehicle radio wave transmission execution unit for intermittently transmitting a vehicle radio wave for returning a response to the electronic key from the vehicle, and the vehicle radio wave to the electronic key Is received, or when the vehicle receives a key radio wave returned by the electronic key in response to the vehicle radio wave, a received signal strength measuring unit that measures a received signal strength of the received radio wave, and the start of the remote operation; Whether or not the remote operation is possible is determined based on the determination result of the received signal strength change amount determination unit that determines whether or not the change amount of the received signal strength during the end is within a threshold value, and the received signal strength change amount determination unit. Setting And a control availability setting unit for.

  According to this configuration, when remotely controlling the in-vehicle device by monitoring the user operation with the operation detection unit of the electronic key, it is determined whether or not the user operation takes a specified operation, and the start and end of the remote operation It is determined whether or not the amount of change in the received signal strength between and within is within a threshold value. Then, the remote operation is permitted only when the change amount falls within the threshold while the user operation takes the prescribed movement of the remote operation. For this reason, the remote operation of the in-vehicle device is permitted only when the remote operation is stopped on the spot, so that, for example, when the user simply approaches or leaves the vehicle, the user operation is assumed to be the prescribed movement of the remote operation. Even if it becomes, vehicle equipment does not operate. Therefore, when the user operation is monitored by the operation detection unit of the electronic key and the in-vehicle device is remotely operated, it is possible to prevent an erroneous operation of the in-vehicle device.

  In the remote operation system, it is preferable that the reception signal strength measurement unit measures a reception signal strength when the vehicle radio wave is received by the electronic key. According to this configuration, it is possible to measure the received signal intensity with vehicle radio waves transmitted from the vehicle.

  In the remote operation system, it is preferable that the vehicle radio wave transmission execution unit continuously transmits the vehicle radio wave regularly or irregularly even if it is determined that ID verification is established with the electronic key. According to this configuration, it is possible to continuously emit radio waves necessary for determining the amount of change in received signal strength from the vehicle.

  In the remote operation system, the received signal strength change amount determination unit determines the received signal strength measured based on the vehicle radio wave periodically transmitted from the vehicle after the remote operation is finished, after the remote operation is finished. It is preferable to obtain the received signal strength. According to this configuration, since the received signal strength is measured after the received signal strength is stabilized, the validity of the received signal strength change amount can be accurately determined.

  In the remote operation system, the electronic key is a radio wave when the amount of change in the received signal strength becomes larger than a threshold after the remote operation ends or when the received signal strength after the remote operation cannot be acquired. It is preferable not to execute the transmission operation. According to this configuration, unnecessary radio wave transmission operation of the electronic key is suppressed, which is advantageous for extending the battery life.

  In the remote operation system, it is preferable that the electronic key includes an operation start notification unit that transmits an operation start notification for notifying the start of the remote operation to the vehicle. According to this configuration, since the electronic key notifies the vehicle that the remote operation has started, the vehicle can accurately grasp the start of the remote operation.

  In the remote operation system, it is preferable that the vehicle includes a polling cycle switching unit that makes the polling cycle of the vehicle radio wave earlier than normal when the operation start notification is received. According to this configuration, the electronic key can be received immediately after the end of the remote operation. Therefore, it is possible to complete the determination of the amount of change in the received signal strength at an early stage.

  In the remote operation system, the polling cycle switching unit receives the operation stop notification from the electronic key when the fixed time has elapsed after the polling cycle is advanced, or when the operation end notification is received from the electronic key. Then, it is preferable to return the polling period to the original value. According to this configuration, it is possible to return the accelerated polling cycle to the original value at a suitable timing.

  In the remote operation system, it is preferable that the electronic key includes an operation end notification unit that transmits an operation end notification for notifying the end of the remote operation to the vehicle. According to this configuration, since the electronic key notifies the vehicle that the remote operation has ended, the vehicle can accurately grasp the end of the remote operation.

  In the remote operation system, it is preferable that the vehicle radio wave transmission executing unit transmits the vehicle radio wave immediately upon receiving the operation end notification from the electronic key. According to this configuration, the electronic key can be received immediately after the end of the remote operation. Therefore, it is possible to complete the determination of the amount of change in the received signal strength at an early stage.

  According to the present invention, it is possible to accurately determine the movement generated in the electronic key in the remote operation system.

The block diagram of the remote control system of 1st Embodiment. The communication sequence diagram of a remote control system. The change figure of the detection signal of the operation detection part at the time of remote operation. (A)-(c) is an illustration figure of the variation | change_quantity of received signal strength. The block diagram of the remote control system of 2nd Embodiment. The communication sequence diagram of a remote control system. The block diagram of the remote control system of 3rd Embodiment. The communication sequence diagram of a remote control system. The block diagram of the remote control system of 4th Embodiment. The communication sequence diagram of a remote control system.

(First embodiment)
Hereinafter, a first embodiment of a remote control system will be described with reference to FIGS.
As shown in FIG. 1, the vehicle 1 includes an electronic key system 3 that performs ID verification wirelessly with the electronic key 2. The electronic key system 3 is a key operation free system that executes ID collation by narrow-band radio (communication distance: several m) triggered by communication from the vehicle 1. Hereinafter, ID verification communication in the key operation free system is described as “smart communication” as an example, and ID verification is described as “smart verification” as an example.

  The vehicle 1 includes a verification ECU (Electric control unit) 4 that performs various verifications with the electronic key 2, a body ECU 5 that manages the power supply of the on-vehicle electrical components, and an engine ECU 6 that controls the operation of the engine 7. . These ECUs are electrically connected through a communication line 8 in the vehicle. The electronic key ID of the electronic key 2 registered in the vehicle 1 is written and stored in the memory 9 of the verification ECU 4. The vehicle 1 includes an in-vehicle transmitter 10 that transmits radio waves to an electronic key 2 outside the vehicle, an in-vehicle transmitter 11 that transmits radio waves to the electronic key 2 in the vehicle, and a vehicle receiver that receives radio waves transmitted from the electronic key 2. 12. These wireless devices are connected to the verification ECU 4. The radio waves transmitted by the external transmitter 10 and the in-vehicle transmitter 11 are preferably LF (Low Frequency) band radio waves. The radio wave received by the vehicle receiver 12 is preferably a UHF (Ultra High Frequency) band radio wave. The body ECU 5 controls the operation of the door lock mechanism 13 that locks and unlocks the vehicle door. Connected to the verification ECU 4 is an engine switch 14 that is operated when switching the power state of the vehicle 1 (IG off, ACC on, IG on, engine start). The engine switch 14 is composed of, for example, a push momentary switch disposed in the driver's seat.

  The electronic key 2 includes a key control unit 15 that controls the operation of the electronic key 2, a reception unit 16 that can receive radio waves transmitted from the vehicle 1, and a transmission unit 17 that can transmit radio waves to the vehicle 1. The receiving unit 16 and the transmitting unit 17 are connected to the key control unit 15. An electronic key ID, which is an ID unique to the key, is written and stored in the memory 18 of the key control unit 15.

  When the electronic transmitter 2 enters the external communication area and receives the request signal Srq when the external transmitter 10 transmits the request signal Srq by LF to form the external communication area around the vehicle, the electronic key 2 performs smart communication outside the vehicle. (Smart communication outside the vehicle) is started, and the ID signal Sid is transmitted to the vehicle 1 by UHF. Specifically, when the electronic key 2 receives the wake signal transmitted from the external transmitter 10, the electronic key 2 is activated and returns an ACK, and in the subsequent communication process, vehicle code verification, challenge response authentication, electronic key Various verifications such as ID verification are executed. The vehicle code collation is a collation in which a vehicle code that is a unique ID of the vehicle 1 is transmitted to the electronic key 2 so that the electronic key 2 authenticates the vehicle code. In challenge response authentication, a challenge code whose code is changed every time it is transmitted is transmitted from the vehicle 1 to the electronic key 2, the challenge code is passed through the encryption key of the electronic key 2 in the electronic key 2, and the response code is calculated. Is returned to the vehicle 1 and the validity of the response code of the electronic key 2 is confirmed by the response code calculated in the vehicle 1 in the same manner. The electronic key ID verification is verification for confirming the validity of the electronic key ID registered in the electronic key 2. When the verification ECU 4 confirms that these verifications are established, the verification ECU 4 determines that smart verification outside the vehicle (smart verification outside the vehicle) has been established, and permits / executes locking / unlocking of the vehicle door by the body ECU 5.

  When the electronic key 2 enters the vehicle, the vehicle transmitter 11 transmits the request signal Srq instead of the vehicle transmitter 10. The verification ECU 4 performs smart verification (in-vehicle smart verification) similar to that outside the vehicle with the electronic key 2 that has entered the in-vehicle communication area. If this verification is established, the verification ECU 4 uses the engine switch 14 disposed in the driver's seat. Allow power transition operation (engine start operation).

  The electronic key system 3 reads a specific movement performed by a user carrying the electronic key 2 (an operation action with a characteristic movement using the body) by the movement detection unit 19 built in the electronic key 2, A remote operation function (remote operation system 20) that enables operation of the in-vehicle device is provided. The remote control system 20 measures a received signal strength indicator (RSSI) when the vehicle radio wave Svi transmitted from the vehicle 1 (external transmitter 10) is received by the electronic key 2, and accompanies the movement of the user. If the amount of change Kx in the received signal strength of the vehicle radio wave Svi is less than or equal to the threshold value Kr at the beginning and end of the user operation while the remote operation is taking a prescribed action, it is assumed that the remote operation has been performed on the spot. Allow operations. In addition, the remote operation system 20 of the present example also performs reception signal strength determination for comparing the received signal strength change amount Kx and the threshold value Kr on the electronic key 2 side.

  An operation action accompanied by a characteristic movement by the user is an operation in which, for example, an action of raising the heel and dropping it on the ground in the vicinity of the vehicle 1 is repeated a plurality of times (for example, three times) within a predetermined time. The movement performed by the user at this time is monitored by the motion detection unit 19. The operation target for remote operation includes, for example, a sliding door of the vehicle 1. This is because, for example, when both hands are covered with luggage, the sliding door cannot be opened by hand, so that it is necessary to meet the need to open the sliding door even if the hand is not usable.

  The motion detector 19 is preferably an acceleration sensor (G sensor), for example. The motion detection unit 19 constantly monitors the movement (acceleration) generated in the electronic key 2 and outputs a detection signal to the key control unit 15. Note that, for example, the motion detection unit 19 may normally be asleep, and may be activated when the amount of change in acceleration exceeds a predetermined value.

  In order to monitor the position of the electronic key 2, the verification ECU 4 includes a vehicle radio wave transmission executing unit 21 that intermittently transmits a vehicle radio wave Svi from the vehicle 1 (external transmitter 10) from the electronic key 2. The vehicle radio wave Svi includes (a) a signal constructed from only the wake signal, (b) a signal constructed from the wake signal and the vehicle code, (c) a signal constructed from the wake signal, the vehicle code, and the challenge code. Can be applied. The vehicle radio wave transmission executing unit 21 continuously transmits the vehicle radio wave Svi, for example, periodically even if smart verification is established. The transmission period of the vehicle radio wave Svi may be the same as the transmission period of the wake signal, or may take a value with a different period (for example, an early period).

  Based on the detection signal from the motion detection unit 19, the key control unit 15 determines the legitimacy of the movement of the user carrying the electronic key 2 and the vehicle radio wave Svi received by the reception unit 16. Received signal strength measurement unit 23 that measures the received signal strength, and a received signal strength that determines a change amount Kx of the received signal strength of the vehicle radio wave Svi at the start and end of a user operation, and determines the validity of the changed amount Kx Based on the determination results of the change amount determination unit 24, the key operation determination unit 22, and the received signal strength change amount determination unit 24, the operation permission / inhibition of setting operation permission / inhibition of the in-vehicle device by the user's characteristic action And a setting unit 25.

  When the received signal strength change amount determination unit 24 detects the start of the remote operation of the in-vehicle device by the user action, the received signal strength change amount acquisition unit 24 acquires the recently measured received signal strength as the received signal strength at the start of the remote operation. The received signal strength change amount determination unit 24 acquires the received signal strength measured based on the vehicle radio wave Svi received next as the received signal strength after the remote operation ends after the remote operation of the in-vehicle device by the user operation ends. . The operation permission / inhibition setting unit 25 permits the remote operation if the user's operation takes a valid motion and the change Kx of the received signal strength between the start and end of the remote operation is within the threshold value Kr. The device control signal Sdm is transmitted from the transmission unit 17 as UHF as an operation start request.

Next, operation | movement of the remote control system 20 is demonstrated using FIGS.
As shown in FIG. 2, for example, when the vehicle is parked (the vehicle door is locked and the engine is stopped), when the electronic key 2 enters the outside communication area formed by the outside transmitter 10, the smart verification outside the vehicle is performed between the electronic key 2 and the verification ECU 4. Is executed. If the electronic key 2 is a regular key, the smart verification outside the vehicle is established. The vehicle radio wave transmission executing unit 21 continues to periodically transmit the vehicle radio wave Svi even after the smart verification outside the vehicle is established.

  When receiving the vehicle radio wave Svi, the electronic key 2 transmits the key radio wave Skey from the transmitter 17 as a response. The key radio wave Skey is, for example, a UHF radio wave, and is a signal constructed from one or a plurality of examples such as an ACK signal, a response code, and an electronic key ID. The electronic key 2 returns the key radio wave Skey every time it receives the vehicle radio wave Svi. When the electronic key 2 receives the vehicle radio wave Svi transmitted from the external transmitter 10 at the receiving unit 16, the reception signal intensity measuring unit 23 measures the received signal strength of the received radio wave, and each time the vehicle radio wave Svi is received, Perform received signal strength measurement. As for the measured received signal strength, the latest data is held in the memory 18.

  As shown in FIG. 3, in order for the user to open the slide door by the movement of the body on the spot, for example, the operation of raising the heel and dropping it on the ground is repeated a plurality of times (for example, three times) within the specified time Tr. When the foot is raised and the heel is dropped to the ground, the electronic key 2 is greatly shaken, and the motion detector 19 detects high acceleration data. If the state in which the sensor value of the motion detection unit 19 is equal to or greater than the threshold value Gk occurs a plurality of times within the specified time Tr, the key operation determination unit 22 is a specified operation for opening the sliding door. Is determined.

  As shown in FIG. 2, the key operation determination unit 22 recognizes that the remote operation has been started with the electronic key 2 at the first detection when the sensor value of the operation detection unit 19 switches to the threshold value Gk or more. At this time, the received signal strength change amount determination unit 24 acquires the received signal strength of the vehicle radio wave Svi-a received immediately before the operation is started as the received signal strength before the operation is started.

  The received signal strength change amount determination unit 24 waits for the reception of the vehicle radio wave Svi that is subsequently periodically transmitted from the vehicle 1 after the remote operation of the electronic key 2 is completed. That is, the electronic key 2 does not transmit the device control signal Sdm to the vehicle 1 until the next vehicle radio wave Svi is received even if the user's remote operation is properly terminated. The received signal strength measuring unit 23 measures the received signal strength when the electronic key 2 receives the vehicle radio wave Svi-b that is next periodically transmitted from the vehicle after the end of the remote operation. The received signal strength change amount determination unit 24 acquires the received signal strength as the received signal strength after the remote operation is finished.

  As shown in FIG. 4 (a), if the user stops in the vicinity of the vehicle and remotely operates the vehicle 1, the received signal strength change amount Kx should be within the threshold value Kr at the start and end of the remote operation. It is. On the other hand, as shown in FIGS. 4B and 4C, if the user simply approaches the vehicle 1 or moves away from the vehicle 1, even if the user operation is determined to be valid, There is a high possibility that the received signal strength change amount Kx exceeds the threshold value Kr at the start and end. Therefore, the received signal strength change amount determination unit 24 is an operation in which the user operation is performed on the spot only when the received signal strength change amount Kx between the start and end of the remote operation is within the threshold value Kr. Is determined.

  The operation permission / inhibition setting unit 25 permits the user's remote operation if the user's operation is valid and the received signal strength change Kx falls within the threshold value Kr between the start and end of the remote operation. At this time, when returning a response to reception of the vehicle radio wave Svi, the operation enable / disable setting unit 25 transmits the key radio wave Skey including the device control signal Sdm. When the verification ECU 4 receives the device control signal Sdm from the electronic key 2 on the assumption that the smart verification is established, the verification ECU 4 causes the body ECU 5 to open the slide door, for example. Therefore, even if both hands of the user are closed with luggage, if the user approaches the vehicle 1 and strikes the heel against the ground several times on the spot, the sliding door can be opened.

According to the configuration of the present embodiment, the following effects can be obtained.
(1) When the user performs a prescribed motion using the body when remotely operating the in-vehicle device, the motion is detected by the motion detector 19 built in the electronic key 2 to determine the validity of the user motion. Also, the amount of change Kx between the received signal strength when the electronic key 2 receives the vehicle radio wave Svi at the start of the remote operation and the received signal strength when the electronic key 2 receives the vehicle radio wave Svi at the end of the remote operation is calculated. If the change amount Kx is less than or equal to the threshold value Kr, remote operation is permitted. For this reason, the remote operation of the in-vehicle device is permitted only when the remote operation is stopped and performed on the spot. For example, when the vehicle 1 is simply approached or separated from the vehicle 1, the user operation is assumed to be the prescribed remote operation. Even if the movement is taken, the in-vehicle device will not operate. Therefore, when the user operation is monitored by the operation detection unit 19 of the electronic key 2 and the in-vehicle device is remotely operated, it is possible to prevent erroneous operation of the in-vehicle device.

(2) Since the received signal intensity is measured by the vehicle radio wave Svi, the received signal intensity can be stably measured by a radio wave having a low frequency such as LF.
(3) Even if it is determined in the verification ECU 4 that smart verification is established, the periodic transmission of the vehicle radio wave Svi is continuously executed. Therefore, it is possible to continuously emit the radio waves necessary for determining the validity of the received signal strength change from the vehicle 1.

  (4) After the remote operation by the user is completed, the electronic key 2 waits for the reception of the vehicle radio wave Svi transmitted from the vehicle 1 next, and transmits the device control signal Sdm. That is, even if the user's remote operation ends, the device control signal Sdm is not transmitted to the vehicle 1 until the next vehicle radio wave Svi is received by the electronic key 2 and the received signal intensity is measured. Therefore, since the received signal strength after the completion of the operation is measured after the received signal strength is stabilized, it is advantageous for accurately determining the validity of the received signal strength change.

(5) Since the validity determination of the received signal strength change is determined on the electronic key 2 side, the determination function can be concentrated on the electronic key 2.
(6) After the remote operation is completed, the electronic key 2 performs the radio wave transmission operation when the received signal strength change amount Kx becomes larger than the threshold value Kr or when the received signal strength after the remote operation cannot be obtained. Do not execute. Therefore, unnecessary radio wave transmission operation of the electronic key 2 is suppressed, which is advantageous for extending the battery life.

(Second Embodiment)
Next, a second embodiment will be described with reference to FIGS. This example is an example in which the polling cycle of the vehicle radio wave Svi is switched after the user's remote operation is started. Therefore, the same parts as those in the first embodiment are denoted by the same reference numerals, description thereof is omitted, and only different parts are described in detail.

  As shown in FIG. 5, the key control unit 15 starts an operation of transmitting an operation start notification Sst from the electronic key 2 to the vehicle 1 when the remote operation of the user having the electronic key 2 is started. A notification unit 26 is provided. The operation start notification Sst is transmitted by UHF radio waves, for example. The verification ECU 4 includes a polling cycle switching unit 27 that switches the polling cycle of the vehicle radio wave Svi with the reception of the operation start notification Sst transmitted from the electronic key 2 as a trigger. When the polling cycle switching unit 27 receives the operation start notification Sst from the electronic key 2, the polling cycle of the vehicle radio wave Svi is made earlier than usual so that the device control signal Sdm is received from the electronic key 2 at an early stage.

Next, the operation of the remote control system 20 will be described with reference to FIG.
As illustrated in FIG. 6, when the operation start notifying unit 26 confirms that the remote operation with the user's movement is started, the operation start notification Sst is sent from the transmission unit 17 to notify that the remote operation is started. Send UHF. The reason why the operation start notification Sst is transmitted a little after the remote operation start time is because it takes time for the motion determination. When the polling cycle switching unit 27 receives the operation start notification Sst transmitted from the electronic key 2, the polling cycle switching unit 27 accelerates the polling cycle of the vehicle radio wave Svi. For this reason, in the electronic key 2, the reception timing of the vehicle radio wave Svi is advanced, so that the device control signal Sdm can be immediately returned to the vehicle 1. Therefore, the responsiveness at the time of operating a vehicle-mounted apparatus by remote operation with a user's movement improves.

  After the polling cycle of the vehicle radio wave Svi is advanced, the polling cycle switching unit 27 (a) when a certain time has elapsed, (b) when receiving a user operation completion signal from the electronic key 2, (c) the electronic key 2 When the user operation stop signal is received from, the polling cycle of the vehicle radio wave Svi is returned to the original normal value. Note that the user operation completion signal and the user operation stop signal may be automatically transmitted from the electronic key 2 when the electronic key 2 determines to that effect, or may be transmitted by the user manually operating the electronic key 2. Good.

According to the configuration of the present embodiment, the following effects can be obtained in addition to (1) to (6) described in the first embodiment.
(7) When a remote operation by the user is started, an operation start notification Sst is transmitted from the electronic key 2 to the vehicle 1. Therefore, the vehicle 1 can accurately grasp when the remote operation is started in the electronic key 2 by receiving the operation start notification Sst from the electronic key 2.

  (8) When the vehicle 1 receives the operation start notification Sst from the electronic key 2, it speeds up the polling cycle of the vehicle radio wave Svi. For this reason, the electronic key 2 can be received immediately after the end of the remote operation. Therefore, it is advantageous to complete the validity determination of the received signal strength change at an early stage.

  (9) The polling cycle of the accelerated vehicle radio wave Svi is returned to the original normal value when any of the above conditions (a) to (c) is satisfied. Therefore, the polling cycle of the vehicle radio wave Svi that has been accelerated can be returned to the original value at a suitable timing.

(Third embodiment)
Next, a third embodiment will be described with reference to FIGS. In this example, after the user's remote operation ends, an operation end notification Sen is transmitted to the vehicle 1 and the vehicle 1 immediately transmits the vehicle radio wave Svi. In this example, only the parts different from the first and second embodiments will be described.

  As shown in FIG. 7, when the remote operation of the user who possesses the electronic key 2 is finished, the key control unit 15 sends an operation end notice Sen to notify the fact from the electronic key 2 to the vehicle 1. The unit 28 is provided. The operation end notification Sen is transmitted by, for example, UHF radio waves. When receiving the operation end notification Sen transmitted from the electronic key 2, the vehicle radio wave transmission executing unit 21 immediately transmits the vehicle radio wave Svi to the electronic key 2 so that the electronic key 2 can measure the received signal strength of the vehicle radio wave Svi. .

Next, the operation of the remote control system 20 will be described with reference to FIG.
As shown in FIG. 8, when the operation end notification unit 28 confirms that the remote operation with the user's movement has ended, the operation end notification Sen that notifies the end of the remote operation is transmitted from the transmission unit 17 to the UHF. To do. When receiving the operation end notification Sen transmitted from the electronic key 2, the vehicle radio wave transmission executing unit 21 transmits the vehicle radio wave Svi immediately. For this reason, since the reception timing of the vehicle radio wave Svi is advanced in the electronic key 2, the device control signal Sdm can be transmitted to the vehicle 1 at an early time after the remote operation is completed. Therefore, this example is also advantageous for improving the responsiveness of the control of the in-vehicle device.

According to the configuration of the present embodiment, in addition to (1) to (9) described in the first and second embodiments, the following effects can be obtained.
(10) When the remote operation by the user is ended, an operation end notification Sen is transmitted from the electronic key 2 to the vehicle 1. Therefore, the vehicle 1 can accurately grasp when the remote operation has ended in the electronic key 2 by receiving the operation end notification Sen transmitted from the electronic key 2.

  (11) Upon receiving the operation end notification Sen from the electronic key 2, the vehicle 1 immediately transmits the vehicle radio wave Svi to the electronic key 2 (irregular transmission). Therefore, it is more advantageous to complete the validity determination of the received signal strength change at an early stage.

(Fourth embodiment)
Next, 4th Embodiment is described according to FIG.9 and FIG.10. In this example, the received signal strength determination of the vehicle radio wave Svi is executed on the vehicle 1 side. In addition, only a different part from the 1st-3rd embodiment is also demonstrated for this example.

  As shown in FIG. 9, the key control unit 15 includes a received signal strength notification unit 29 that notifies the vehicle 1 of the received signal strength (received signal strength data Drssi) of the vehicle radio wave Svi measured by the electronic key 2. The reception signal strength notifying unit 29 receives the key radio wave Skey, which is a response when the vehicle radio wave Svi is received, by returning the key radio wave Skey with the reception signal strength data Drssi and transmitting it. The vehicle 1 is notified of the received signal strength of the vehicle radio wave Svi. The electronic key 2 is provided with the operation start notification unit 26 and the operation end notification unit 28 in the key control unit 15 so that the operation start notification Sst can be transmitted to the vehicle 1 at the start of the remote operation. The operation end notification Sen can be transmitted to the vehicle 1.

  The verification ECU 4 includes a received signal strength change amount determining unit 24 and an operation availability setting unit 25 in order to perform the received signal strength determination of the vehicle radio wave Svi on the vehicle 1 side. When receiving the operation start notification Sst from the electronic key 2, the reception signal strength change amount determination unit 24 uses the received signal strength obtained from the electronic key 2 immediately before receiving the operation start notification Sst as the operation start reception signal strength. get. The received signal strength change amount determination unit 24 acquires the received signal strength when the electronic key 2 receives the vehicle radio wave Svi transmitted from the vehicle 1 triggered by the operation end notification Sen as the received signal strength after the operation is completed.

Next, the operation of the remote control system 20 will be described with reference to FIG.
As shown in FIG. 10, upon receiving the vehicle radio wave Svi transmitted from the vehicle 1, the electronic key 2 measures the received signal strength of the vehicle radio wave Svi by the received signal strength measuring unit 23. When the received signal strength notification unit 29 returns the key radio wave Skey to the vehicle 1 as a response to the reception of the vehicle radio wave Svi, the received signal strength data Drssi is included in the radio wave, thereby receiving the received signal of the vehicle radio wave Svi just received. The vehicle 1 is notified of the strength. Each time the electronic key 2 receives the vehicle radio wave Svi, the electronic key 2 notifies the vehicle 1 of the received signal strength data Drssi of the received radio wave.

  When the received signal strength change amount determination unit 24 acquires the received signal strength data Drssi from the electronic key 2 by receiving the key radio wave Skey, the received signal strength change amount determination unit 24 stores the received signal strength data Drssi in the memory 9. Each time the received signal strength change amount determination unit 24 receives new received signal strength data Drssi, it rewrites the stored data to a new one and sequentially updates the received signal strength data Drssi held in the memory 9. .

  When the operation start notifying unit 26 confirms that the remote operation with the movement of the user is started, the operation start notifying unit 26 transmits the operation start notification Sst to the vehicle 1 by UHF. When receiving the operation start notification Sst, the received signal strength change amount determination unit 24 receives the received signal strength data Drssi held in the memory 9, that is, the vehicle radio wave Svi-a received immediately before the remote operation is started. The signal strength is acquired as the received signal strength before the operation is started.

  The operation end notification unit 28 transmits an operation end notification Sen to the vehicle 1 by UHF when confirming that the remote operation with the user's movement has been properly ended. When receiving the operation end notification Sen, the vehicle radio wave transmission executing unit 21 immediately transmits the vehicle radio wave Svi-b to the electronic key 2. When receiving the vehicle radio wave Svi-b, the electronic key 2 measures the received signal strength of the received radio wave, and adds the received signal strength data Drssi to the key radio wave Skey in response to the reception of the vehicle radio wave Svi-b. To the vehicle 1. The received signal strength change amount determination unit 24 acquires the received signal strength data Drssi that is received first after receiving the operation end notification Sen as the received signal strength after the operation ends.

  The received signal strength change amount determination unit 24 calculates a change amount Kx between the received signal strength before the start of the operation and the received signal strength after the end of the operation, and confirms whether the change amount Kx is equal to or less than the threshold value Kr. . The operation permission / inhibition setting unit 25 permits a remote operation with a user's movement when the received signal strength change amount Kx is equal to or less than the threshold value Kr. For this reason, the sliding door is opened only by taking a prescribed movement on the spot. Thus, even on the vehicle 1 side, it is possible to accurately determine the received signal strength.

According to the configuration of this embodiment, the following effects can be obtained in addition to (1) to (3), (7), (10), and (11) described in the first to third embodiments.
(12) Every time the vehicle radio wave Svi is received, the electronic key 2 measures the received signal strength data Drssi when the vehicle radio wave Svi is received, and transmits this by including it in the key radio wave Skey that is a response to the vehicle radio wave Svi. Thus, the vehicle 1 is notified of the received signal strength of the vehicle radio wave Svi. The vehicle 1 grasps the start and end of the remote operation based on the operation start notification Sst and the operation end notification Sen received from the electronic key 2, and performs the remote operation based on the received signal strength data Drssi received from the electronic key 2. The legitimacy of the received signal strength change between the start and end of is determined. Accordingly, it is possible to accurately determine the validity of the remote operation also on the vehicle 1 side.

Note that the embodiment is not limited to the configuration described so far, and may be modified as follows.
In each embodiment, the prescribed action imposed on the user at the time of remote operation is not limited to the operation of raising a foot and hitting the ground a predetermined number of times. For example, it can be changed to other operations such as shaking the body left and right a predetermined number of times and shaking the foot up and down a predetermined number of times.

In each embodiment, the validity determination of remote operation is not limited to being performed at the time of smart verification outside the vehicle, but may be performed at the time of smart verification in the vehicle, for example.
-In each embodiment, if a user's remote operation is performed when a vehicle door is an open state, a vehicle door may be closed.

  -In each embodiment, when a remote operation is performed while the vehicle door is opening, the vehicle door may start to reverse the closing operation. On the contrary, when the remote operation is performed while the vehicle door is closing, the vehicle door may start to reverse the opening operation.

  In each embodiment, the polling cycle (slow cycle) of the vehicle radio wave Svi before the smart communication is established and the polling cycle (early cycle) of the vehicle radio wave Svi after the smart communication is established are switched to different values. Also good.

  -In 2nd Embodiment, the operation | movement performed when the vehicle 1 receives operation start notification Sst is not limited to the operation | movement which makes a polling period early. For example, it is possible to notify the user that the remote operation is being monitored in the vehicle 1 by an indicator or a horn. Moreover, it is good also as operation | movement which only transmits that the remote operation was started to the vehicle 1 from the electronic key 2. FIG.

  In the third embodiment, the operation that is executed when the vehicle 1 receives the operation start notification Sst is not limited to the operation that immediately transmits the vehicle radio wave Svi to the electronic key 2. For example, it may be an operation of simply transmitting the end of the remote operation from the electronic key 2 to the vehicle 1.

  In the fourth embodiment, the received signal strength data Drssi is not limited to being always transmitted from the electronic key 2 to the vehicle 1 during communication between the vehicle 1 and the electronic key 2. For example, the received signal strength data Drssi may be transmitted to the vehicle 1 only during communication after the smart verification is established.

-In each embodiment, remote control of in-vehicle equipment can be changed to others, such as locking and unlocking of a vehicle door, storing of a door mirror, etc., for example.
In each embodiment, the frequencies of the vehicle radio wave Svi and the key radio wave Skey can be changed to other frequencies. The vehicle radio wave Svi and the key radio wave Skey may be radio waves having the same frequency.

In each embodiment, the received signal strength may be measured by the received radio wave when the vehicle 1 receives the key radio wave Skey.
-In each embodiment, the detection signal (detection data) of the operation | movement detection part 19 may be transmitted to the vehicle 1 by radio | wireless, and determination of the legitimacy of user operation may be performed by the vehicle 1 side.

  In each embodiment, the received signal strength before operation may be the received signal strength of the radio wave being received when the remote operation is started. Further, the received signal strength after operation may be the received signal strength of the radio wave being received when the remote operation is finished.

Next, technical ideas that can be grasped from the above-described embodiment and other examples will be described below together with their effects.
(A) In the remote operation system, the electronic key includes the received signal intensity change amount determination unit and an operation availability setting unit, and the validity of the change amount is determined on the electronic key side. According to this configuration, since the determination of the amount of change in the received signal strength is performed using the electronic key, it is only necessary to notify the vehicle of only the determination result.

  (B) In the remote operation system, the electronic key includes a received signal strength notification unit that notifies the vehicle of a received signal strength measured based on the received signal strength, and the vehicle determines the received signal strength change amount. And determining whether or not the change amount is correct by determining the change amount based on the received signal strength received from the electronic key. According to this configuration, it is possible to accurately determine the amount of change in received signal strength even on the vehicle side.

  DESCRIPTION OF SYMBOLS 1 ... Vehicle, 2 ... Electronic key, 19 ... Motion detection part, 20 ... Remote operation system, 21 ... Vehicle radio wave transmission execution part, 23 ... Received signal strength measurement part, 24 ... Received signal strength change determination part, 25 ... Operation Allowability setting unit, 26 ... operation start notification unit, 27 ... polling cycle switching unit, 28 ... operation end notification unit, Svi (Svi-a, Svi-b) ... vehicle radio wave, Skey ... key radio wave, Kx ... received signal strength Change amount, Kr: threshold value of received signal strength change amount, Sst: operation start notification, Sen: operation end notification.

Claims (8)

Based on the detection signal of the motion detection unit provided in the electronic key, it is determined whether or not a movement intended for remote operation of the in-vehicle device has occurred in the electronic key, and the in-vehicle device is determined based on the determination result. In a remote control system for remote control,
A vehicle radio wave transmission execution unit for intermittently transmitting a vehicle radio wave for returning a response to the electronic key from the vehicle;
A received signal strength measuring unit for measuring a received signal strength of a received radio wave when the electronic key receives the vehicle radio wave or when the vehicle receives a key radio wave returned by the electronic key in response to the vehicle radio wave; ,
A received signal strength change amount determination unit that determines whether or not a received signal strength change amount between the start and end of the remote operation is within a threshold; and
Based on the determination result of the received signal strength change amount determination unit, an operation availability setting unit that sets the availability of the remote operation ,
The electronic key includes an operation start notification unit that transmits an operation start notification to notify the start of the remote operation to the vehicle.
The vehicle is provided with a polling cycle switching unit that, when receiving the operation start notification, makes a polling cycle of the vehicle radio wave earlier than usual . The polling cycle switching unit, when a predetermined time has passed after the polling cycle is accelerated, when an operation end notification is received from the electronic key, or when an operation stop notification is received from the electronic key, The remote control system according to claim 1 , wherein the value is returned to the original value. The electronic key, the remote control system according to claim 1 or 2, characterized in that it comprises an operation completion notification unit that transmits an operation completion notification notifying the completion of the remote operation to the vehicle. The remote operation system according to claim 3 , wherein the vehicle radio wave transmission execution unit transmits the vehicle radio wave immediately upon receiving the operation end notification from the electronic key. The remote operation system according to any one of claims 1 to 4, wherein the reception signal strength measurement unit measures a reception signal strength when the vehicle radio wave is received by the electronic key. 6. The vehicle radio wave transmission execution unit continuously transmits the vehicle radio wave regularly or irregularly even if it is determined that ID verification is established with the electronic key . The remote control system as described in any one of them . The received signal strength change amount determination unit acquires a received signal strength measured based on the vehicle radio wave periodically transmitted from the vehicle next as the received signal strength after the remote operation ends after the remote operation ends. The remote operation system according to any one of claims 1 to 6 , wherein The electronic key does not execute a radio wave transmission operation when the amount of change in the received signal strength becomes greater than a threshold value after the remote operation ends or when the received signal strength after the remote operation cannot be acquired. The remote operation system according to any one of claims 1 to 7 , wherein