JP6082669B2 - Remote control system - Google Patents
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Description
本発明は、車載機器を遠隔操作する遠隔操作システムに関する。 The present invention relates to a remote operation system for remotely operating an in-vehicle device.
従来、電子キーに加速度センサを設け、加速度センサの出力信号から、電子キーに発生する動きを判定し、その判定結果により車両を制御する技術が周知である（特許文献１等参照）。特許文献１は、電子キーに発生する動き（歩調等）から、電子キーの携帯者を識別し、ユーザごとに車両環境（座席位置やオーディオ設定等）を設定する技術である。 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.
特許文献１の応用例として、例えば、ユーザが身体を使って行う特定の動作を電子キーの加速度センサで検出し、その動作が正当であれば、車両の遠隔操作が許可又は実行される遠隔操作システムが検討されている。この遠隔操作システムにおいては、遠隔操作されて直ぐに車載機器が動く応答性をよくしたいニーズがあり、これを満足するために、動作判定を短時間で直ぐに完了する必要があった。 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, there is a need to improve the responsiveness that the in-vehicle device moves immediately after being remotely operated. In order to satisfy this, it is necessary to complete the operation determination immediately in a short time.
本発明の目的は、遠隔操作の応答性をよくすることができる遠隔操作システムを提供することにある。 An object of the present invention is to provide a remote operation system capable of improving the responsiveness of remote operation.
前記問題点を解決する遠隔操作システムは、電子キーに設けられた動作検出部の検出信号を基に、車載機器の遠隔操作を目的とした動きが当該電子キーにおいて発生したか否かを判定し、その判定結果を基に前記車載機器を遠隔操作する構成において、車両から、前記電子キーに応答を返信させるための車両電波を間欠送信させる車両電波送信実行部と、前記車両電波を前記電子キーが受信したとき、又は当該車両電波に応答して前記電子キーが返すキー電波を前記車両が受信したとき、受信電波の受信信号強度を測定する受信信号強度測定部と、前記遠隔操作の開始と終了との間の受信信号強度の変化量が閾値以内か否かを判定する受信信号強度変化量判定部と、前記受信信号強度変化量判定部の判定結果を基に、前記遠隔操作の可否を設定する操作可否設定部とを備え、前記電子キーは、前記遠隔操作の途中において、前記車両電波の送信を前記車両に要求する送信要求通知を、事前に前記車両に送信する事前通知部を備え、前記車両電波送信実行部は、前記送信要求通知から予測される送信タイミングで前記車両電波を送信することにより、前記受信信号強度測定部に操作終了後の受信信号強度を測定させる。 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 The electronic key includes a prior notification unit that transmits a transmission request notification requesting the vehicle to transmit the vehicle radio wave to the vehicle in advance during the remote operation, The vehicle radio wave transmission execution unit transmits the vehicle radio wave at a transmission timing predicted from the transmission request notification, thereby causing the reception signal strength measurement unit to measure the reception signal strength after the operation is completed.
本構成によれば、ユーザ動作を電子キーの動作検出部で監視することにより車載機器を遠隔操作するにあたり、ユーザ動作が規定の動作をとるか否かを判定するとともに、遠隔操作の開始と終了との間の受信信号強度の変化量が閾値以内となるか否かを判定する。そして、ユーザ動作が遠隔操作の規定の動きをとりつつ、この変化量が閾値以内に収まるときのみ、遠隔操作が許可される。このため、遠隔操作がその場で立ち止まって行われるときのみ、車載機器の遠隔操作が許可されるので、例えば車両に単に近づいたり車両から離れたりするとき、仮にユーザ動作が遠隔操作の規定の動きとなってしまっても、車載機器が作動することはない。よって、ユーザ動作を電子キーの動作検出部で監視して車載機器を遠隔操作するにあたり、車載機器の誤操作を生じ難くすることが可能となる。 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.
また、本構成の場合、遠隔操作の途中に電子キーから予め送信要求通知を車両に送信しておくことにより、車両電波の送信トリガとなる送信要求通知を、予め車両に通知する。このため、遠隔操作終了後、受信信号強度を得るために車両と電子キーとに課す通信を、早い段階で完了することが可能となる。よって、遠隔操作を開始して車載機器が作動するまでにかかる時間が短く済むので、遠隔操作の応答性をよくすることが可能となる。 Further, in the case of this configuration, a transmission request notification that becomes a vehicle radio wave transmission trigger is notified to the vehicle in advance by transmitting a transmission request notification from the electronic key to the vehicle in the middle of the remote operation. For this reason, it is possible to complete the communication imposed on the vehicle and the electronic key in order to obtain the received signal strength after the remote operation is completed. Therefore, since it takes only a short time from the start of the remote operation to the operation of the in-vehicle device, the responsiveness of the remote operation can be improved.
前記遠隔操作システムにおいて、前記事前通知部は、前記遠隔操作が終了する直前に、前記送信要求通知を前記車両に送信することが好ましい。この構成によれば、遠隔操作の終了を予測するのに充分な時間をとることが可能となるので、判定精度の確保に有利となる。 In the remote operation system, it is preferable that the prior notification unit transmits the transmission request notification to the vehicle immediately before the remote operation ends. According to this configuration, it is possible to take a sufficient time to predict the end of the remote operation, which is advantageous for ensuring the determination accuracy.
前記遠隔操作システムにおいて、前記送信要求通知は、直ちに前記車両に前記車両電波を返信させる要求であり、前記事前通知部は、遠隔操作が終了するのと同時に前記電子キーが前記車両電波を受信できるように、これを満足するタイミングで前記送信要求通知を前記車両に送信することが好ましい。この構成によれば、送信要求通知は単なるトリガ信号で済むので、送信要求通知が簡素な信号で済む。 In the remote operation system, the transmission request notification is a request to immediately return the vehicle radio wave to the vehicle, and the advance notification unit receives the vehicle radio wave at the same time as the remote operation is finished. Preferably, the transmission request notification is transmitted to the vehicle at a timing satisfying this. According to this configuration, since the transmission request notification is a simple trigger signal, the transmission request notification is a simple signal.
前記遠隔操作システムにおいて、前記事前通知部は、前記遠隔操作の途中において操作速度を算出し、当該操作速度により遠隔操作の終了時刻を予想し、当該終了時刻に基づくタイミングにおいて前記送信要求通知を前記車両に送信することが好ましい。この構成によれば、ユーザごとに遠隔操作の操作速度が異なっても、車両電波を最適なタイミングで車両から電子キーに送信することが可能となる。よって、判定精度の確保に一層有利となる。 In the remote operation system, the prior notification unit calculates an operation speed during the remote operation, predicts an end time of the remote operation based on the operation speed, and sends the transmission request notification at a timing based on the end time. It is preferable to transmit to the vehicle. According to this configuration, it is possible to transmit vehicle radio waves from the vehicle to the electronic key at an optimal timing even if the operation speed of remote operation differs for each user. Therefore, it is further advantageous for ensuring the determination accuracy.
前記遠隔操作システムにおいて、前記事前通知部は、前記遠隔操作が開始されてからの経過時間が、操作途中のある時間に到達したとき、前記送信要求通知を前記車両に送信することが好ましい。この構成によれば、送信要求通知をいつ送信するのかを判断するにあたり、遠隔操作が開始されてからの時間を計測するだけで済むので、処理の簡素化に有利である。 In the remote operation system, it is preferable that the prior notification unit transmits the transmission request notification to the vehicle when an elapsed time from the start of the remote operation reaches a certain time during the operation. According to this configuration, when determining when to transmit the transmission request notification, it is only necessary to measure the time from the start of the remote operation, which is advantageous in simplifying the processing.
前記遠隔操作システムにおいて、前記遠隔操作は、同一操作の繰り返し操作であり、前記事前通知部は、前記繰り返し操作の回数が規定回数となったとき、前記送信要求通知を前記車両に送信することが好ましい。この構成によれば、送信要求通知をいつ送信するのかを判断するにあたり、繰り返し操作の回数を監視するだけでよいので、処理の簡素化に有利である。 In the remote operation system, the remote operation is a repetitive operation of the same operation, and the prior notification unit transmits the transmission request notification to the vehicle when the number of the repetitive operations reaches a specified number. Is preferred. According to this configuration, it is only necessary to monitor the number of repetitive operations when determining when to transmit the transmission request notification, which is advantageous in simplifying the processing.
本発明によれば、遠隔操作システムにおいて、遠隔操作の応答性をよくすることができる。 ADVANTAGE OF THE INVENTION According to this invention, the responsiveness of remote operation can be improved in a remote operation system.
（第１実施形態）
以下、遠隔操作システムの第１実施形態を図１〜図４に従って説明する。
図１に示すように、車両１は、電子キー２と無線によりＩＤ照合を実行する電子キーシステム３を備える。電子キーシステム３は、車両１からの通信を契機に狭域無線（通信距離：数ｍ）によりＩＤ照合を実行するキー操作フリーシステムである。以降、キー操作フリーシステムにおけるＩＤ照合の通信を例として「スマート通信」と記し、ＩＤ照合を例として「スマート照合」と記す。
(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.
車両１は、電子キー２との間で各種照合を実行する照合ＥＣＵ（Electric control unit）４と、車載電装品の電源を管理するボディＥＣＵ５と、エンジン７の動作を制御するエンジンＥＣＵ６とを備える。これらＥＣＵは、車内の通信線８を通じて電気接続される。照合ＥＣＵ４のメモリ９には、車両１に登録された電子キー２の電子キーＩＤが書き込み保存されている。車両１は、車外の電子キー２に電波を送信する車外送信機１０と、車内の電子キー２に電波を送信する車内送信機１１と、電子キー２から送信される電波を受信する車両受信機１２とを備える。これら無線機は、照合ＥＣＵ４に接続される。車外送信機１０及び車内送信機１１が送信する電波は、ＬＦ（Low Frequency）帯の電波が好ましい。車両受信機１２が受信する電波は、ＵＨＦ（Ultra High Frequency）帯の電波が好ましい。ボディＥＣＵ５は、車両ドアを施解錠するドアロック機構１３の動作を制御する。照合ＥＣＵ４には、車両１の電源状態（ＩＧオフ、ＡＣＣオン、ＩＧオン、エンジンスタート）を切り替える際に操作するエンジンスイッチ１４が接続されている。エンジンスイッチ１４は、運転席に配設された例えばプッシュモーメンタリ式スイッチからなる。 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.
電子キー２は、電子キー２の動作を制御するキー制御部１５と、車両１から送信された電波を受信可能な受信部１６と、車両１に電波を送信可能な送信部１７とを備える。受信部１６及び送信部１７は、キー制御部１５に接続される。キー制御部１５のメモリ１８には、キー固有のＩＤである電子キーＩＤが書き込み保存されている。 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.
車外送信機１０がリクエスト信号ＳrqをＬＦ送信して車両周囲に車外通信エリアを形成するとき、電子キー２が車外通信エリアに進入してリクエスト信号Ｓrqを受信すると、電子キー２は車外におけるスマート通信（車外スマート通信）を開始して、ＩＤ信号Ｓidを車両１にＵＨＦ送信する。具体的には、車外送信機１０から送信されたウェイク信号を電子キー２が受信すると、電子キー２が起動してアックを返信し、続く通信課程において、車両コード照合、チャレンジレスポンス認証、電子キーＩＤ照合等の各種照合を実行する。車両コード照合は、車両１の固有ＩＤである車両コードを電子キー２に送信し、電子キー２に車両コードを認証させる照合である。チャレンジレスポンス認証は、送信の度にコードが毎回変わるチャレンジコードを車両１から電子キー２に送信し、電子キー２においてチャレンジコードを電子キー２の暗号鍵に通してレスポンスコードを演算させて、これを車両１に返信させ、車両１において同様に演算したレスポンスコードにより、電子キー２のレスポンスコードの正当性を確認する照合である。電子キーＩＤ照合は、電子キー２に登録された電子キーＩＤの正当性を確認する照合である。照合ＥＣＵ４は、これら照合が成立することを確認すると、車外のスマート照合（車外スマート照合）が成立したと判断し、ボディＥＣＵ５による車両ドアの施解錠を許可／実行する。 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.
電子キー２が車内に進入すると、車外送信機１０に代えて、今度は車内送信機１１がリクエスト信号Ｓrqを送信する。照合ＥＣＵ４は、車内通信エリアに進入した電子キー２との間で、車外と同様のスマート照合（車内スマート照合）を行い、この照合が成立すれば、運転席に配設されたエンジンスイッチ１４による電源遷移操作（エンジン始動操作）を許可する。 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).
電子キーシステム３は、電子キー２を携帯したユーザが実行する特定の動き（身体を使った特徴的な動きを伴う操作行為）を、電子キー２に内蔵した動作検出部１９で読み取ることにより、車載機器を操作可能とする遠隔操作機能（遠隔操作システム２０）を備える。遠隔操作システム２０は、車両１（車外送信機１０）から送信された車両電波Ｓviを電子キー２で受信した際の受信信号強度（ＲＳＳＩ：Received Signal Strength Indicator）を測定し、ユーザの動きを伴う遠隔操作が規定の動作をとりつつ、ユーザ操作の開始と終わりとで車両電波Ｓviの受信信号強度の変化量Ｋｘが閾値Ｋｒ以下であれば、遠隔操作がその場で行われたとして、車載機器の操作を許可する。また、本例の遠隔操作システム２０は、受信信号強度の変化量Ｋｘと閾値Ｋｒとを比較する受信信号強度判定を電子キー２側で行うものでもある。 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.
ユーザによる特徴的な動きを伴う操作行為は、車両１の近傍において、例えばかかとを上げて地面に落とす行為を、所定時間内に複数（例えば３回）繰り返す操作がある。このときにユーザが行う動きが動作検出部１９で監視される。また、遠隔操作の操作対象は、例えば車両１のスライドドア等がある。これは、例えば両手が荷物で塞がっているときには、手でスライドドアを開操作することができないので、手が使えなくてもスライドドアを開操作したいニーズに対応するためである。 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.
動作検出部１９は、加速度センサ（Ｇセンサ）であることが好ましい。動作検出部１９は、電子キー２に発生する動き（加速度）を常時監視し、検出信号をキー制御部１５に出力する。なお、動作検出部１９は、例えば通常、スリープしており、加速度の変化量が所定値以上となった際に起動するものでもよい。 The motion detection unit 19 is preferably an acceleration sensor (G sensor). 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.
照合ＥＣＵ４は、電子キー２の位置を監視するために、車両１（車外送信機１０）から車両電波Ｓviを電子キー２から送信させる車両電波送信実行部２１を備える。車両電波Ｓviは、（ａ）ウェイク信号のみから構築される信号、（ｂ）ウェイク信号及び車両コードから構築される信号、（ｃ）ウェイク信号、車両コード及びチャレンジコードから構築される信号など、種々の信号が適用可能である。車両電波送信実行部２１は、スマート照合が成立していても、車両電波Ｓviを例えば定期的に継続送信させる。車両電波Ｓviの送信周期は、ウェイク信号の送信周期と同一でもよいし、又は周期が異なる値（例えば早い周期）をとってもよい。 In order to monitor the position of the electronic key 2, the verification ECU 4 includes a vehicle radio wave transmission execution unit 21 that transmits the vehicle radio wave Svi from the electronic key 2 from the vehicle 1 (external transmitter 10). 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).
キー制御部１５は、動作検出部１９からの検出信号を基に、電子キー２を携帯したユーザの動きの正当性を判定するキー動作判定部２２と、遠隔操作の途中に、車両電波Ｓviの送信を車両１に要求する送信要求通知Ｓｕを事前に車両１に送信する事前通知部２３とを備える。事前通知部２３は、例えば、遠隔操作の途中までの経過時間Ｔｕを基に、遠隔操作の操作速度を算出し、この操作速度から遠隔操作の終了時刻を予測し、その終了時刻に車両１が車両電波Ｓviを送信できるタイミングで、送信要求通知Ｓｕを車両１に送信する。操作速度の算出タイミングは、例えば遠隔操作が同一操作の繰り返し操作の場合、繰り返し操作が規定回数目となったときが好ましい。送信要求通知Ｓｕは、例えば、車両電波Ｓviの送信を直ちに要求する通知であることが好ましい。事前通知部２３は、送信要求通知Ｓｕの事前送信として、送信要求通知Ｓｕを操作終了の直前に送信する。車両電波送信実行部２１は、電子キー２から送信要求通知Ｓｕを受信すると、これをトリガに車両電波Ｓviを電子キー２に送信する。 The key control unit 15 includes a key operation determination unit 22 that determines the legitimacy of the movement of the user carrying the electronic key 2 based on the detection signal from the operation detection unit 19, and the vehicle radio wave Svi during the remote operation. A prior notification unit 23 that transmits a transmission request notification Su for requesting transmission to the vehicle 1 to the vehicle 1 in advance. For example, the prior notification unit 23 calculates the operation speed of the remote operation based on the elapsed time Tu until the middle of the remote operation, predicts the end time of the remote operation from the operation speed, and at the end time the vehicle 1 A transmission request notification Su is transmitted to the vehicle 1 at a timing at which the vehicle radio wave Svi can be transmitted. For example, when the remote operation is a repetitive operation of the same operation, the operation speed is preferably calculated when the repetitive operation reaches a specified number of times. The transmission request notification Su is preferably a notification for immediately requesting transmission of the vehicle radio wave Svi, for example. The prior notification unit 23 transmits the transmission request notification Su immediately before the end of the operation as the prior transmission of the transmission request notification Su. When receiving the transmission request notification Su from the electronic key 2, the vehicle radio wave transmission executing unit 21 transmits the vehicle radio wave Svi to the electronic key 2 using this as a trigger.
キー制御部１５は、受信部１６で受信した車両電波Ｓviの受信信号強度を測定する受信信号強度測定部２４と、ユーザ操作の開始と終了とにおける車両電波Ｓviの受信信号強度の変化量Ｋｘを算出し、この変化量Ｋｘの正当性を判定する受信信号強度変化量判定部２５と、キー動作判定部２２及び受信信号強度変化量判定部２５の各判定結果を基に、ユーザの特徴的な動きを伴う操作行為による車載機器の操作可否を設定する操作可否設定部２６とを備える。 The key control unit 15 measures the received signal strength measuring unit 24 that measures the received signal strength of the vehicle radio wave Svi received by the receiving unit 16, and the change amount Kx of the received signal strength of the vehicle radio wave Svi at the start and end of the user operation. Based on the determination results of the received signal strength change amount determination unit 25 that calculates and determines the validity of the change amount Kx, and the key operation determination unit 22 and the received signal strength change amount determination unit 25, the user's characteristic And an operation availability setting unit 26 that sets whether or not the vehicle-mounted device can be operated by an operation action involving movement.
受信信号強度変化量判定部２５は、ユーザ動作による車載機器の遠隔操作の開始を検出すると、直近に測定した受信信号強度を、遠隔操作開始時の受信信号強度として取得する。受信信号強度変化量判定部２５は、ユーザ動作による車載機器の遠隔操作の終了後、次に受信する車両電波Ｓviに基づき測定された受信信号強度を、遠隔操作終了後の受信信号強度として取得する。操作可否設定部２６は、ユーザ動作が正当な動きをとり、かつ遠隔操作の開始と終了との間の受信信号強度の変化量Ｋｘが閾値Ｋｒ以内であれば、遠隔操作を許可し、車載機器の操作開始要求として機器制御信号Ｓdmを送信部１７からＵＨＦ送信させる。 When the received signal strength change amount determination unit 25 detects the start of the remote operation of the in-vehicle device by the user action, the received signal strength change amount acquisition unit 25 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 25 acquires the received signal strength measured based on the vehicle radio wave Svi received next as the received signal strength after the end of the remote operation after the end of the remote operation of the in-vehicle device by the user action. . The operation permission / inhibition setting unit 26 permits the remote operation when the user action is 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 Kr. The device control signal Sdm is transmitted from the transmission unit 17 as UHF as an operation start request.
次に、図２〜図４を用いて、遠隔操作システム２０の動作を説明する。
図２に示すように、例えば車両駐車時（車両ドア施錠及びエンジン停止）、車外送信機１０が形成する車外通信エリアに電子キー２が進入すると、電子キー２及び照合ＥＣＵ４の間で車外スマート照合が実行される。電子キー２が正規キーであれば、車外スマート照合が成立する。車両電波送信実行部２１は、車外スマート照合成立後も、車両電波Ｓviの定期送信を継続して実行する。
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.
電子キー２は、車両電波Ｓviを受信すると、その応答として、キー電波Ｓkeyを送信部１７から送信する。キー電波Ｓkeyは、例えばＵＨＦ電波であり、例としてアック信号、レスポンスコード、電子キーＩＤ等の１つ又は複数から構築される信号である。電子キー２は、車両電波Ｓviを受信する度、キー電波Ｓkeyを返信する。電子キー２は、車外送信機１０から送信された車両電波Ｓviを受信部１６で受信したとき、受信電波の受信信号強度を受信信号強度測定部２４で測定し、車両電波Ｓviを受信する度、受信信号強度計測を実行する。計測された受信信号強度は、最新のデータがメモリ１８に保持される。 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. The electronic key 2 measures the received signal strength of the received radio wave with the received signal strength measuring unit 24 when receiving the vehicle radio wave Svi transmitted from the external transmitter 10, and receives the vehicle radio wave Svi. Perform received signal strength measurement. As for the measured received signal strength, the latest data is held in the memory 18.
図３に示すように、ユーザがその場での身体の動きによってスライドドアを開操作するには、例えばかかとを上げて地面に落とす動作を、規定時間Ｔｒ内に複数（例えば３回）繰り返す。足を上げてかかとを地面に落とすと、電子キー２が大きく揺れ、動作検出部１９は高い加速度データを検出する。キー動作判定部２２は、規定時間Ｔｒ内に、動作検出部１９のセンサ値が閾値Ｇｋ以上となる状態が複数回発生すれば、ユーザの動きがスライドドアを開操作のための規定動作であると判定する。 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.
図２に示すように、キー動作判定部２２は、動作検出部１９のセンサ値が閾値Ｇｋ以上に切り替わる１回目の検出時、電子キー２において遠隔操作が開始されたと認識する。このとき、受信信号強度変化量判定部２５は、操作開始前の直前に受信した車両電波Ｓvi−ａの受信信号強度を、操作開始前の受信信号強度として取得する。 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 25 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.
事前通知部２３は、遠隔操作の途中、車両１に車両電波Ｓviの送信を要求する送信要求通知Ｓｕを車両１に事前送信する。具体的に述べると、例えば遠隔操作が１動作（かかとを落とす）の繰り返し操作の場合、事前通知部２３は、遠隔操作が開始されてから２回目の繰り返し操作が行われるまでの経過時間Ｔｕを基にユーザの操作速度を算出し、その操作速度による遠隔操作の操作終了時刻を予測する。そして、事前通知部２３は、遠隔操作が終了するのとほぼ同じタイミングで車両１から車両電波Ｓviが送信されるように、その送信動作が満足される時刻、つまり遠隔操作開始の経過時間がＴｗとなったときに送信要求通知Ｓｕを車両１に送信する。車両電波送信実行部２１は、送信要求通知Ｓｕを受信すると、操作終了後の受信信号強度を電子キー２に測定させるために、車両電波Ｓvi−ｂを電子キー２に送信する。 The prior notification unit 23 transmits in advance to the vehicle 1 a transmission request notification Su that requests the vehicle 1 to transmit the vehicle radio wave Svi during the remote operation. Specifically, for example, when the remote operation is a repetitive operation of one operation (drops the heel), the prior notification unit 23 determines the elapsed time Tu from when the remote operation is started until the second repetitive operation is performed. Based on this, the operation speed of the user is calculated, and the operation end time of the remote operation based on the operation speed is predicted. The prior notification unit 23 then satisfies the transmission operation so that the vehicle radio wave Svi is transmitted from the vehicle 1 at almost the same timing as the end of the remote operation, that is, the elapsed time of the remote operation start Tw. At this time, a transmission request notification Su is transmitted to the vehicle 1. When receiving the transmission request notification Su, the vehicle radio wave transmission executing unit 21 transmits the vehicle radio wave Svi-b to the electronic key 2 in order to cause the electronic key 2 to measure the received signal strength after the operation is completed.
電子キー２は、遠隔操作が終了するタイミングにおいて、車両電波Ｓvi−ｂを受信する。受信信号強度測定部２４は、遠隔操作終了後、車両１から送信された車両電波Ｓvi−ｂを受信すると、その受信信号強度を測定する。受信信号強度変化量判定部２５は、この受信信号強度を、遠隔操作終了後の受信信号強度として取得する。 The electronic key 2 receives the vehicle radio wave Svi-b at the timing when the remote operation ends. When the received signal strength measuring unit 24 receives the vehicle radio wave Svi-b transmitted from the vehicle 1 after the end of the remote operation, the received signal strength measuring unit 24 measures the received signal strength. The received signal strength change amount determination unit 25 acquires the received signal strength as the received signal strength after the remote operation is completed.
図４（ａ）に示すように、車両近傍でユーザが立ち止まって車両１を遠隔操作するのであれば、遠隔操作の開始と終了とでは、受信信号強度の変化量Ｋｘが閾値Ｋｒ以内に収まるはずである。一方、図４（ｂ），（ｃ）に示すように、ユーザが単に車両１に近づいたり、車両１から離れたりするのであれば、仮にユーザ動作が正当と判定されたとしても、遠隔操作の開始と終了とでは、受信信号強度の変化量Ｋｘが閾値Ｋｒを超える可能性が高い。よって、受信信号強度変化量判定部２５は、遠隔操作の開始と終了との間の受信信号強度の変化量Ｋｘが閾値Ｋｒ以内となるときのみ、ユーザ動作がその場で実行された操作であると判定する。 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 25 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.
操作可否設定部２６は、ユーザ動作が正当であり、かつ遠隔操作の開始と終了とで受信信号強度の変化量Ｋｘが閾値Ｋｒ以内に収まるのであれば、ユーザの遠隔操作を許可する。このとき、操作可否設定部２６は、車両電波Ｓviの受信に対する応答を返信する際、キー電波Ｓkeyに機器制御信号Ｓdmを含ませて送信する。照合ＥＣＵ４は、スマート照合が成立することを前提に、電子キー２から機器制御信号Ｓdmを受信すると、例えばボディＥＣＵ５にスライドドアを開操作させる。よって、ユーザの両手が仮に荷物で塞がっていても、車両１に近づき、その場でかかとを地面に複数回叩きつければ、スライドドアを開作動させることが可能となる。 The operation permission / inhibition setting unit 26 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 at 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 availability setting unit 26 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.
本実施形態の構成によれば、以下に記載の効果を得ることができる。
（１）車載機器を遠隔操作するにあたり、ユーザが身体を使った規定動作を行った際、電子キー２は、遠隔操作の開始直前に受信した車両電波Ｓviの受信信号強度を、操作前受信信号強度として取得する。電子キー２は、遠隔操作が開始されてからの経過時間Ｔｕを計測し、そのユーザの操作速度を算出し、この操作速度から遠隔操作の終了時刻を予測する。電子キー２は、遠隔操作の終了と同時に車両電波Ｓviを受信できるように、この通信を満足するタイミングに送信要求通知Ｓｕを車両１に事前送信する。車両１は、電子キー２から送信要求通知Ｓｕを受信すると、車両電波Ｓviを電子キー２に送信する。電子キー２は、このときに受信した車両電波Ｓviの受信信号強度を、操作後受信信号強度として取得する。そして、操作前受信信号強度と操作後受信信号強度との変化量Ｋｘを算出し、変化量Ｋｘが閾値Ｋｒ以下であれば、遠隔操作を許可する。
According to the configuration of the present embodiment, the following effects can be obtained.
(1) When the user performs a prescribed operation using the body when remotely operating the in-vehicle device, the electronic key 2 uses the received signal strength of the vehicle radio wave Svi received immediately before the start of the remote operation as the received signal before the operation. Get as strength. The electronic key 2 measures the elapsed time Tu from the start of the remote operation, calculates the operation speed of the user, and predicts the end time of the remote operation from this operation speed. The electronic key 2 pre-transmits a transmission request notification Su to the vehicle 1 at a timing satisfying this communication so that the vehicle radio wave Svi can be received simultaneously with the end of the remote operation. When the vehicle 1 receives the transmission request notification Su from the electronic key 2, the vehicle 1 transmits the vehicle radio wave Svi to the electronic key 2. The electronic key 2 acquires the received signal strength of the vehicle radio wave Svi received at this time as the received signal strength after operation. Then, a change amount Kx between the received signal strength before operation and the received signal strength after operation is calculated. If the change amount Kx is equal to or less than the threshold value Kr, remote operation is permitted.
本例のように、電子キー２の実際の動きと車両電波Ｓviの受信信号強度とを組み合わせてユーザ動作の判定を行うようにすれば、遠隔操作がその場で立ち止まって行われるときのみ、車載機器の遠隔操作が許可される。このため、例えば車両１に単に近づいたり車両１から離れたりするとき、仮にユーザ動作が規定の遠隔操作の動きをとってしまっても、誤って車載機器が作動することはない。よって、ユーザ動作を電子キー２の動作検出部１９で監視して車載機器を遠隔操作するにあたり、車載機器の誤操作を生じ難くすることができる。 As in this example, if the user movement is determined by combining the actual movement of the electronic key 2 and the received signal strength of the vehicle radio wave Svi, the vehicle is mounted only when the remote operation is stopped on the spot. Remote operation of the device is permitted. For this reason, for example, when the user simply approaches or leaves the vehicle 1, even if the user action takes a prescribed remote operation, the in-vehicle device does not operate by mistake. 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.
また、電子キー２は、遠隔操作の途中において、ユーザの操作速度を基に遠隔操作の終了時刻を予測し、遠隔操作の終了前に、車両電波Ｓviの送信開始を指示する送信要求通知Ｓｕを車両１に事前送信する。このため、車両１は、電子キー２において遠隔操作が終了するのとほぼ同時に、受信信号強度計測のための車両電波Ｓviを電子キー２に送信することとなる。これにより、遠隔操作終了後にやり取りされる車両電波Ｓvi及び機器制御信号Ｓdmの通信を、早い段階で完了することができる。よって、遠隔操作を開始してから車載機器が作動するまでにかかる時間が短く済むので、遠隔操作の応答性をよくすることが可能となる。 In addition, the electronic key 2 predicts the end time of the remote operation based on the operation speed of the user during the remote operation, and sends a transmission request notification Su instructing the start of transmission of the vehicle radio wave Svi before the end of the remote operation. It is transmitted in advance to the vehicle 1. For this reason, the vehicle 1 transmits the vehicle radio wave Svi for measuring the received signal intensity to the electronic key 2 almost simultaneously with the end of the remote operation with the electronic key 2. Thereby, the communication of the vehicle radio wave Svi and the device control signal Sdm exchanged after the end of the remote operation can be completed at an early stage. Therefore, since it takes a short time from the start of the remote operation to the operation of the in-vehicle device, the responsiveness of the remote operation can be improved.
（２）送信要求通知Ｓｕは、遠隔操作の終了直前に電子キー２から車両１に送信される。よって、遠隔操作の終了を予測するのに充分な時間をとることが可能となるので、判定精度の確保に有利となる。 (2) The transmission request notification Su is transmitted from the electronic key 2 to the vehicle 1 immediately before the end of the remote operation. Therefore, it is possible to take a sufficient time to predict the end of the remote operation, which is advantageous for ensuring the determination accuracy.
（３）送信要求通知Ｓｕは、通知受信を契機に単に車両電波Ｓviを電子キー２に送信させる要求である。よって、送信要求通知Ｓｕは単なるトリガ信号で済むので、送信要求通知Ｓｕが簡素な信号で済む。 (3) The transmission request notification Su is a request for simply transmitting the vehicle radio wave Svi to the electronic key 2 when the notification is received. Therefore, since the transmission request notification Su can be a simple trigger signal, the transmission request notification Su can be a simple signal.
（４）遠隔操作の終了は、遠隔操作時のユーザの操作速度を基に予測する。このため、ユーザごとに遠隔操作の操作速度が異なっても、車両電波Ｓviを最適なタイミングで車両１から送信させることが可能となる。よって、判定精度の確保に一層有利となる。 (4) The end of the remote operation is predicted based on the operation speed of the user during the remote operation. For this reason, even if the operation speed of remote operation differs for each user, the vehicle radio wave Svi can be transmitted from the vehicle 1 at an optimal timing. Therefore, it is further advantageous for ensuring the determination accuracy.
（５）受信信号強度変化の正当性判定を電子キー２側で判断するので、判定機能を電子キー２に集約できる。
（第２実施形態）
次に、第２実施形態を図５及び図６に従って説明する。本例は、車両電波Ｓviの受信信号強度判定を車両１側で実行する実施例である。よって、第１実施形態と同一部分には同じ符号を付して説明を省略し、異なる部分についてのみ詳述する。
(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.
(Second Embodiment)
Next, a second embodiment will be described with reference to FIGS. In this example, the received signal strength determination of the vehicle radio wave Svi is executed on the vehicle 1 side. 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.
図５に示すように、キー制御部１５は、電子キー２で計測された車両電波Ｓviの受信信号強度（受信信号強度データＤrssi）を車両１に通知する受信信号強度通知部２８を備える。受信信号強度通知部２８は、車両電波Ｓviを受信した際の応答であるキー電波Ｓkeyを車両１に返すとき、キー電波Ｓkeyに受信信号強度データＤrssiを付加して送信することにより、いま受信した車両電波Ｓviの受信信号強度を車両１に通知する。 As shown in FIG. 5, the key control unit 15 includes a reception signal strength notification unit 28 that notifies the vehicle 1 of the reception signal strength (reception signal strength data Drssi) of the vehicle radio wave Svi measured by the electronic key 2. The received signal strength notification unit 28, when returning the key radio wave Skey, which is a response when the vehicle radio wave Svi is received, to the vehicle 1 is received by adding the received signal strength data Drssi to the key radio wave Skey and transmitting it. The vehicle 1 is notified of the received signal strength of the vehicle radio wave Svi.
事前通知部２３は、送信要求通知Ｓｕを車両１に送信するとき、遠隔操作開始から送信要求通知Ｓｕを送信するまでに要した時間Ｔｗのデータ（操作時間データＤｔ）を送信要求通知Ｓｕに含ませることにより、操作時間データＤｔを車両１に通知する。よって、送信要求通知Ｓｕは、例えば送信要求コマンドと操作時間データＤｔとを含む信号から構築される。 When transmitting the transmission request notification Su to the vehicle 1, the prior notification unit 23 includes the data (operation time data Dt) of the time Tw required from the start of the remote operation until the transmission request notification Su is transmitted to the transmission request notification Su. Thus, the operation time data Dt is notified to the vehicle 1. Therefore, the transmission request notification Su is constructed from a signal including, for example, a transmission request command and operation time data Dt.
照合ＥＣＵ４は、車両電波Ｓviの受信信号強度判定を車両１側で行うため、受信信号強度変化量判定部２５及び操作可否設定部２６を備える。照合ＥＣＵ４は、電子キー２から受信した操作時間データＤｔを基に遠隔操作前の受信信号強度を決定する操作前受信信号強度決定部２９を備える。操作前受信信号強度決定部２９は、電子キー２から受信した受信信号強度データＤrssiを一定時間、記憶しておき、電子キー２から操作時間データＤｔを受信したとき、操作時間データＤｔから逆算することにより、使用すべき操作前受信信号強度を割り出す。 The verification ECU 4 includes a received signal strength change amount determining unit 25 and an operation availability setting unit 26 in order to perform the received signal strength determination of the vehicle radio wave Svi on the vehicle 1 side. The verification ECU 4 includes a pre-operation reception signal strength determination unit 29 that determines the reception signal strength before remote operation based on the operation time data Dt received from the electronic key 2. The pre-operation received signal strength determining unit 29 stores the received signal strength data Drssi received from the electronic key 2 for a certain period of time, and when receiving the operating time data Dt from the electronic key 2, calculates backward from the operating time data Dt. Thus, the pre-operation received signal strength to be used is determined.
受信信号強度変化量判定部２５は、遠隔操作が終了すると予測した時刻に送信した車両電波Ｓviを電子キー２が受信したときの受信信号強度を、操作終了後受信信号強度として取得する。受信信号強度変化量判定部２５は、このようにして取得した受信信号強度に基づき、車両１において遠隔操作の開始と終了との間の受信信号強度の変化量Ｋｘを算出し、変化量Ｋｘの正当性を判定する。 The received signal strength change amount determination unit 25 acquires the received signal strength when the electronic key 2 receives the vehicle radio wave Svi transmitted at the time when the remote operation is predicted to end as the received signal strength after the operation. Based on the received signal strength acquired in this way, the received signal strength change amount determination unit 25 calculates a received signal strength change amount Kx between the start and end of the remote operation in the vehicle 1, and calculates the change amount Kx. Determine validity.
次に、図６を用いて、遠隔操作システム２０の動作を説明する。
図６に示すように、電子キー２は、車両１から送信された車両電波Ｓviを受信すると、受信信号強度測定部２４で車両電波Ｓviの受信信号強度を測定する。受信信号強度通知部２８は、車両電波Ｓviの受信に対する電子キー２の応答としてキー電波Ｓkeyを車両１に返信するとき、電波内に受信信号強度データＤrssiを含ませることにより、いま受信した車両電波Ｓviの受信信号強度を車両１に通知する。電子キー２は、車両電波Ｓviを受信する度、その受信電波の受信信号強度データＤrssiを車両１に通知する。
Next, the operation of the remote control system 20 will be described with reference to FIG.
As shown in FIG. 6, when 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 24. The received signal strength notification unit 28 includes the received signal strength data Drssi in the radio wave when the key radio wave Skey is returned to the vehicle 1 as a response of the electronic key 2 to the reception of the vehicle radio wave Svi. The vehicle 1 is notified of the received signal strength of Svi. 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.
操作前受信信号強度決定部２９は、キー電波Ｓkeyの受信により電子キー２から受信信号強度データＤrssiを取得すると、これをメモリ９に一定時間記憶する。一定時間の時間幅は、例えば、遠隔操作の操作許容時間である規定時間Ｔｒと、定期送信される車両電波Ｓviのポーリング周期Ｔｓとを合計した時間以下であることが好ましい。 The pre-operation received signal strength determination unit 29 acquires the received signal strength data Drssi from the electronic key 2 by receiving the key radio wave Skey, and stores it in the memory 9 for a certain period of time. For example, the time width of the certain time is preferably equal to or less than a total time of a specified time Tr that is an allowable operation time of remote operation and a polling cycle Ts of the vehicle radio wave Svi that is periodically transmitted.
続いて、ユーザがスライドドアの開操作のために、遠隔操作を開始したとする。事前通知部２３は、遠隔操作の途中、２回目のかかと操作までにかかった経過時間Ｔｕからユーザの操作速度を算出して、操作終了時刻を予測し、その予測時刻を満足するタイミング、つまり遠隔操作開始から時間Ｔｗが経過したとき、送信要求通知Ｓｕを車両１にＵＨＦ送信する。このとき、事前通知部２３は、経過時間Ｔｗの操作時間データＤｔを、送信要求通知Ｓｕに含めて車両１に送信する。操作前受信信号強度決定部２９は、電子キー２から送信要求通知Ｓｕを受信すると、メモリ９に一定時間分記憶された受信信号強度データＤrssiのうち、操作時間データＤｔから逆算して合致するデータ（車両電波Ｓvi−ａを受信した際の受信信号強度）を、操作前の受信信号強度として取得する。 Subsequently, it is assumed that the user starts remote operation for opening the slide door. The prior notification unit 23 calculates the operation speed of the user from the elapsed time Tu taken until the second heel operation during the remote operation, predicts the operation end time, and satisfies the predicted time, that is, the remote When the time Tw has elapsed from the start of the operation, a transmission request notification Su is transmitted to the vehicle 1 by UHF. At this time, the prior notification unit 23 transmits the operation time data Dt of the elapsed time Tw to the vehicle 1 by including it in the transmission request notification Su. When the pre-operation received signal strength determination unit 29 receives the transmission request notification Su from the electronic key 2, the received signal strength data Drssi stored in the memory 9 for a certain period of time is back-calculated from the operation time data Dt and matches the data (Received signal strength when receiving vehicle radio wave Svi-a) is acquired as received signal strength before operation.
車両電波送信実行部２１は、送信要求通知Ｓｕの受信をトリガにして、車両電波Ｓvi−ｂをＬＦ送信する。電子キー２は、遠隔操作が終了すると、そのほぼ同時刻に車両電波Ｓvi−ｂを受信する。受信信号強度測定部２４は、遠隔操作終了後、車両電波Ｓvi−ｂを受信すると、その受信信号強度を測定する。受信信号強度通知部２８は、車両電波Ｓvi−ｂを受信したときの受信信号強度をキー電波Ｓkeyに付加して、操作終了後の受信信号強度を車両１に通知する。受信信号強度変化量判定部２５は、送信要求通知Ｓｕに基づき車両電波Ｓvi−ｂを送信してから最初に受信する受信信号強度データＤrssiを、操作終了後の受信信号強度として取得する。 The vehicle radio wave transmission execution unit 21 performs LF transmission of the vehicle radio wave Svi-b using the reception of the transmission request notification Su as a trigger. When the remote operation ends, the electronic key 2 receives the vehicle radio wave Svi-b at approximately the same time. When receiving the vehicle radio wave Svi-b after the end of the remote operation, the received signal strength measuring unit 24 measures the received signal strength. The received signal strength notification unit 28 adds the received signal strength when the vehicle radio wave Svi-b is received to the key radio wave Skey, and notifies the vehicle 1 of the received signal strength after the operation is completed. The received signal strength change amount determination unit 25 acquires the received signal strength data Drssi received first after transmitting the vehicle radio wave Svi-b based on the transmission request notification Su as the received signal strength after the operation is completed.
受信信号強度変化量判定部２５は、操作開始前の受信信号強度と、操作終了後の受信信号強度との変化量Ｋｘを算出し、変化量Ｋｘが閾値Ｋｒ以下となるか否かを確認する。操作可否設定部２６は、受信信号強度の変化量Ｋｘが閾値Ｋｒ以下のとき、ユーザの動きを伴う遠隔操作を許可する。このため、その場でユーザが規定された動きをとるだけで、スライドドアが開作動される。このように、車両１側であっても、受信信号強度判定を精度よく行うことが可能となる。 The received signal strength change amount determination unit 25 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. . When the received signal strength change amount Kx is equal to or less than the threshold value Kr, the operation permission / inhibition setting unit 26 permits a remote operation with a user's movement. 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.
本実施形態の構成によれば、第１実施形態に記載の（１）〜（４）に加え、以下の効果を得ることができる。
（６）車両１側においても遠隔操作の正当性判定を、精度よく行うことができる。
According to the configuration of this embodiment, in addition to (1) to (4) described in the first embodiment, the following effects can be obtained.
(6) The validity of remote control can be accurately determined on the vehicle 1 side.
なお、実施形態はこれまでに述べた構成に限らず、以下の態様に変更してもよい。
・各実施形態において、遠隔操作時にユーザに課す規定動作は、足を上げて地面を所定回数叩く操作に限定されない。例えば、身体を左右に所定回数振る、足を上下に所定回数振るなど、他の操作に変更可能である。
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.
・各実施形態において、遠隔操作の正当性判定は、車外スマート照合時に実行されることに限らず、例えば車内スマート照合時に実行されてもよい。
・各実施形態において、車両ドアが開状態のときにユーザの遠隔操作が行われると、車両ドアが閉作動してもよい。
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.
・各実施形態において、車両ドアが開動作している最中に遠隔操作が実行されたとき、車両ドアが閉作動を反転開始してもよい。また、これとは逆に、車両ドアが閉動作している最中に遠隔操作が実行されたとき、車両ドアが開作動を反転開始してもよい。 -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.
・各実施形態において、スマート通信が確立する前の車両電波Ｓviのポーリング周期（遅い周期）と、スマート通信確立後の車両電波Ｓviのポーリング周期（早い周期）とを、各々別の値に切り替えてもよい。 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.
・第２実施形態において、受信信号強度データＤrssiは、車両１と電子キー２との間の通信時、常に電子キー２から車両１に送信されることに限定されない。例えば、スマート照合が成立した後の通信のときのみ、受信信号強度データＤrss iを車両１に送信してもよい。 In the second 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 smart verification is established.
・各実施形態において、車載機器の遠隔操作は、例えば車両ドアの施解錠、ドアミラーの格納など、他に変更可能である。
・各実施形態において、車両電波Ｓvi及びキー電波Ｓkeyの周波数は、他の周波数に変更可能である。車両電波Ｓvi及びキー電波Ｓkeyは、同じ周波数の電波でもよい。
-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.
・各実施形態において、事前通知部２３は、繰り返し操作の回数が規定回数となったとき、送信要求通知Ｓｕを車両１に送信する動作をとってもよい。
・各実施形態において、事前通知部２３は、遠隔操作が開始されてからの時間が、操作途中のある時間に到達したとき、送信要求通知Ｓｕを車両１に送信する動作をとってもよい。
-In each embodiment, the prior notification part 23 may take the operation | movement which transmits the transmission request notification Su to the vehicle 1, when the frequency | count of repetition operation becomes a regulation frequency.
-In each embodiment, the prior notification part 23 may take the operation | movement which transmits the transmission request notification Su to the vehicle 1, when the time after a remote operation is started reaches a certain time in the middle of operation.
・各実施形態において、送信要求通知Ｓｕは、例えば遠隔操作の終了時刻など、車両電波Ｓviをいつ送信すればよいのかを車両１において判断できる情報でもよい。車両電波送信実行部２１は、送信要求通知Ｓｕによって決まる時刻に車両電波Ｓviを電子キー２に送信する。 In each embodiment, the transmission request notification Su may be information that allows the vehicle 1 to determine when the vehicle radio wave Svi should be transmitted, such as a remote operation end time. The vehicle radio wave transmission execution unit 21 transmits the vehicle radio wave Svi to the electronic key 2 at a time determined by the transmission request notification Su.
・各実施形態において、送信要求通知Ｓｕとして、操作途中において判明した操作速度や、遠隔操作の途中までに要した操作時間のデータを電子キー２から車両１に送信する。車両１は、電子キー２から受信した操作速度や操作時間のデータから、いつ遠隔操作が終了するのかを自ら判断し、その予測時刻に車両電波Ｓviを電子キー２に送信してもよい。 In each embodiment, as the transmission request notification Su, the operation speed determined during the operation and the operation time data required until the remote operation is transmitted from the electronic key 2 to the vehicle 1. The vehicle 1 may determine by itself when the remote operation ends from the operation speed and operation time data received from the electronic key 2 and transmit the vehicle radio wave Svi to the electronic key 2 at the predicted time.
・各実施形態において、受信信号強度の測定は、キー電波Ｓkeyを車両１が受信したときの受信電波によって行ってもよい。
・各実施形態において、動作検出部１９の検出信号（検出データ）を無線によって車両１に送信し、ユーザ動作の正当性の判定を車両１側で実行してもよい。
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.
・各実施形態において、操作前受信信号強度は、遠隔操作が開始されたときに受信中の電波の受信信号強度でもよい。また、操作後受信信号強度は、遠隔操作が終了したときに受信中の電波の受信信号強度でもよい。 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.
次に、上記実施形態及び別例から把握できる技術的思想について、それらの効果とともに以下に追記する。
（イ）前記遠隔操作システムにおいて、前記電子キーは、前記受信信号強度変化量判定部及び操作可否設定部を備え、前記変化量の正当性の判定を、当該電子キー側で実行する。この構成によれば、受信信号強度の変化量判定を電子キーで実行するので、車両には判定結果のみを通知するだけで済む。
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.
（ロ）前記遠隔操作システムにおいて、前記電子キーは、前記受信信号強度測定部により測定された受信信号強度を前記車両に通知する受信信号強度通知部を備え、前記車両は、前記受信信号強度変化量判定部及び操作可否設定部を備え、前記電子キーから受信した前記受信信号強度を基に前記変化量の判定を行うことにより、当該変化量の正当性の判定を、当該車両側で実行する。この構成によれば、受信信号強度の変化量判定を、車両側であっても精度よく行うことが可能となる。
(B) In the remote operation system, the electronic key includes a reception signal strength notification unit that notifies the vehicle of the reception signal strength measured by the reception signal strength measurement unit , and the vehicle changes the reception signal strength. An amount determining unit and an operation availability setting unit, and determining the validity of the amount of change on the vehicle side by determining the amount of change 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.
１…車両、２…電子キー、１９…動作検出部、２０…遠隔操作システム、２１…車両電波送信実行部、２３…事前通知部、２４…受信信号強度測定部、２５…受信信号強度変化量判定部、２６…操作可否設定部、Ｓvi（Ｓvi−ａ，Ｓvi−ｂ）…車両電波、Ｓkey…キー電波、Ｓｕ…送信要求通知、Ｋｘ…受信信号強度の変化量。Ｋｒ…受信信号強度変化量の閾値。 DESCRIPTION OF SYMBOLS 1 ... Vehicle, 2 ... Electronic key, 19 ... Operation | movement detection part, 20 ... Remote operation system, 21 ... Vehicle radio wave transmission execution part, 23 ... Prior notification part, 24 ... Received signal strength measurement part, 25 ... Received signal strength change amount Determining unit, 26 ... operation enable / disable setting unit, Svi (Svi-a, Svi-b) ... vehicle radio wave, Skey ... key radio wave, Su ... transmission request notification, Kx ... change amount of received signal intensity. Kr: A threshold value of the received signal strength change amount.
Claims (6)
車両から、前記電子キーに応答を返信させるための車両電波を間欠送信させる車両電波送信実行部と、前記車両電波を前記電子キーが受信したとき、又は当該車両電波に応答して前記電子キーが返すキー電波を前記車両が受信したとき、受信電波の受信信号強度を測定する受信信号強度測定部と、前記遠隔操作の開始と終了との間の受信信号強度の変化量が閾値以内か否かを判定する受信信号強度変化量判定部と、前記受信信号強度変化量判定部の判定結果を基に、前記遠隔操作の可否を設定する操作可否設定部とを備え、
前記電子キーは、前記遠隔操作の途中において、前記車両電波の送信を前記車両に要求する送信要求通知を、事前に前記車両に送信する事前通知部を備え、
前記車両電波送信実行部は、前記送信要求通知から予測される送信タイミングで前記車両電波を送信することにより、前記受信信号強度測定部に操作終了後の受信信号強度を測定させる
ことを特徴とする遠隔操作システム。 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 that intermittently transmits a vehicle radio wave for returning a response to the electronic key from a vehicle, and when the electronic key receives the vehicle radio wave, or in response to the vehicle radio wave, the electronic key When the vehicle receives the key radio wave to be returned, the received signal strength measuring unit that measures the received signal strength of the received radio wave, and whether the amount of change in the received signal strength between the start and end of the remote operation is within a threshold value A received signal strength change amount determination unit that determines whether the remote operation is possible based on a determination result of the received signal strength change amount determination unit,
The electronic key includes a prior notification unit that transmits to the vehicle in advance a transmission request notification that requests the vehicle to transmit the vehicle radio wave during the remote operation.
The vehicle radio wave transmission execution unit transmits the vehicle radio wave at a transmission timing predicted from the transmission request notification, thereby causing the reception signal strength measurement unit to measure a reception signal strength after the operation is completed. Remote control system.
ことを特徴とする請求項１に記載の遠隔操作システム。 The remote operation system according to claim 1, wherein the prior notification unit transmits the transmission request notification to the vehicle immediately before the remote operation ends.
前記事前通知部は、遠隔操作が終了するのと同時に前記電子キーが前記車両電波を受信できるように、これを満足するタイミングで前記送信要求通知を前記車両に送信する
ことを特徴とする請求項１又は２に記載の遠隔操作システム。 The transmission request notification is a request to immediately return the vehicle radio wave to the vehicle,
The advance notification unit transmits the transmission request notification to the vehicle at a timing satisfying the electronic key so that the electronic key can receive the vehicle radio wave at the same time as the remote operation ends. Item 3. The remote control system according to item 1 or 2.
ことを特徴とする請求項１〜３のうちいずれか一項に記載の遠隔操作システム。 The prior notification unit calculates an operation speed during the remote operation, predicts an end time of the remote operation based on the operation speed, and transmits the transmission request notification to the vehicle at a timing based on the end time. The remote control system according to any one of claims 1 to 3, wherein
ことを特徴とする請求項１〜３のうちいずれか一項に記載の遠隔操作システム。 The said prior notification part transmits the said transmission request notification to the said vehicle, when the time after the said remote operation is started reaches a certain time in the middle of operation, The said notification request | requirement is characterized by the above-mentioned. The remote control system as described in any one of them.
前記事前通知部は、前記繰り返し操作の回数が規定回数となったとき、前記送信要求通知を前記車両に送信する
ことを特徴とする請求項１〜３のうちいずれか一項に記載の遠隔操作システム。 The remote operation is a repeated operation of the same operation,
The remote notification according to any one of claims 1 to 3, wherein the prior notification unit transmits the transmission request notification to the vehicle when the number of repetitions reaches a specified number. Operation system.
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