JP2020072437A - Handle operation detection device - Google Patents

Handle operation detection device Download PDF

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JP2020072437A
JP2020072437A JP2018207162A JP2018207162A JP2020072437A JP 2020072437 A JP2020072437 A JP 2020072437A JP 2018207162 A JP2018207162 A JP 2018207162A JP 2018207162 A JP2018207162 A JP 2018207162A JP 2020072437 A JP2020072437 A JP 2020072437A
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electrode
hand
seat
handle
human body
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中村　浩
Hiroshi Nakamura
浩 中村
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Hyundai Motor Co
Kia Corp
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Hyundai Motor Co
Kia Motors Corp
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Priority to JP2018207162A priority Critical patent/JP2020072437A/en
Priority to KR1020180168206A priority patent/KR20200050837A/en
Publication of JP2020072437A publication Critical patent/JP2020072437A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/08—Interaction between the driver and the control system
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/002—Seats provided with an occupancy detection means mounted therein or thereon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/0224—Non-manual adjustments, e.g. with electrical operation
    • B60N2/0244—Non-manual adjustments, e.g. with electrical operation with logic circuits
    • B60N2/0268—Non-manual adjustments, e.g. with electrical operation with logic circuits using sensors or detectors for adapting the seat or seat part, e.g. to the position of an occupant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
    • B60W40/08—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to drivers or passengers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
    • B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
    • B62D1/04—Hand wheels
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/011—Arrangements for interaction with the human body, e.g. for user immersion in virtual reality
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
    • B60W40/08—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to drivers or passengers
    • B60W2040/0881—Seat occupation; Driver or passenger presence

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • General Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Steering Controls (AREA)

Abstract

To provide a handle operation detection device that can detect in advance that a driver who has released the hand from a steering wheel has started to grasp the steering wheel with the hand.SOLUTION: A handle operation detection device includes a first electrode provided on a seat cushion or a seat back of a seat, a second electrode provided on a handle, and a human body communication control circuit that is connected to the first electrode and the second electrode, through an electric field existing around a human body of an occupant, sets one of the first electrode and the second electrode as a transmitting electrode, sets the other as a receiving electrode, and performs communication between the transmitting electrode and the receiving electrode, and when the occupant's hand approaches the steering wheel, the human body communication control circuit communicates from the transmitting electrode to the receiving electrode via the electric field around the hand before the hand comes into contact with the steering wheel, and recognizes that the hand approaches the steering wheel.SELECTED DRAWING: Figure 1

Description

本発明は、ハンドル操作検出装置に係り、より詳しくは、自動運転時、ハンドルから手を離していた運転者が、ハンドルを握る動作に入ったことを事前に検知できるハンドル操作検出装置に関する。   The present invention relates to a steering wheel operation detection device, and more particularly, to a steering wheel operation detection device that can detect in advance that a driver who has released his / her hand from the steering wheel during a self-driving operation has already started to grasp the steering wheel.

従来は、車両の電動パワーステアリング装置（ＥＰＳ：Ｅｌｅｃｔｒｉｃ Ｐｏｗｅｒ Ｓｔｅｅｒｉｎｇ Ｓｙｓｔｅｍ）が、ステアリングホイールに内蔵されるトルクセンサーで負荷を計測し、運転者の手がハンドルに触れているかを判定していた。特許文献１では、運転者がハンドルを握っているハンズオン状態と、運転者がハンドルを握っていないハンズオフ状態（手放し状態）をトルク検出手段や回転角検出手段などにより高精度に判定している。   Conventionally, an electric power steering system (EPS) of a vehicle measures a load with a torque sensor built into a steering wheel to determine whether a driver's hand is touching a steering wheel. In Patent Document 1, a hands-on state in which the driver holds the steering wheel and a hands-off state in which the driver does not hold the steering wheel (hand-released state) are highly accurately determined by the torque detection means, the rotation angle detection means, or the like.

しかしながら、運転者がハンドルを握っているのか、それともハンドルから手を離しているは判別できても、運転者の手がハンドルから離れた状態から、ハンドルを握ろうとする動作に入ることは検知できない。   However, even if it is possible to determine whether the driver is grasping the steering wheel or releasing the steering wheel, it is not possible to detect that the driver's hand is in the state of trying to grasp the steering wheel from the state where the driver's hand is separated from the steering wheel. ..

特開２０１７−１１４３２４号公報JP, 2017-114324, A

本発明の目的は、ハンドルから手を離していた運転者がハンドルを手で握る動作に入ったことを事前に検知できるハンドル操作検出装置を提供することにある。   An object of the present invention is to provide a steering wheel operation detecting device that can detect in advance that a driver who has released his hand from the steering wheel has started to grasp the steering wheel with his hand.

本発明によるハンドル操作検出装置は、座席のシートクッション又はシートバックに設けられた第１電極と、ハンドルに設けられた第２電極と、前記第１電極と前記第２電極に接続され、着座者の人体の周囲に存在する電界を通して、前記第１電極と前記第２電極の一方が送信電極とされ、他方が受信電極とされ、送信電極と受信電極間の通信を行なう人体通信制御回路と、が備えられ、前記人体通信制御回路は、着座者の手がハンドルに接近すると、手がハンドルに接触する前に、手の周囲の電界を介して、送信電極から受信電極への通信を行ない、手のハンドルへの接近を認識することを特徴とする。   A handle operation detecting device according to the present invention is connected to a first electrode provided on a seat cushion or a seat back of a seat, a second electrode provided on a handle, the first electrode and the second electrode, and a seated person Through the electric field existing around the human body, one of the first electrode and the second electrode is a transmitting electrode and the other is a receiving electrode, and a human body communication control circuit for performing communication between the transmitting electrode and the receiving electrode, The human body communication control circuit, when the seated person's hand approaches the handle, performs communication from the transmitting electrode to the receiving electrode via an electric field around the hand before the hand comes into contact with the handle, It is characterized by recognizing the approach to the handle of the hand.

前記人体通信制御回路は、前記送信電極から送信した識別コードを前記受信電極が受信したことを確認して、着座者の手がハンドルに接近したことを検知することを特徴とする。   The human body communication control circuit confirms that the reception electrode has received the identification code transmitted from the transmission electrode, and detects that the seated person's hand approaches the handle.

前記第１電極が、運転席と助手席の両方に設けられ、前記人体通信制御回路は、助手席の着座者がハンドルに手を接近させても、受信した識別コードが運転席の識別コードでない場合は、ハンドル操作とは認識しないことを特徴とする。   The first electrode is provided in both the driver's seat and the passenger's seat, and the human body communication control circuit is such that the received identification code is not the driver's seat identification code even when the passenger seated in the passenger's seat approaches his or her hand. The case is characterized in that it is not recognized as a steering wheel operation.

前記人体通信制御回路は、電界強度の値の設定が可能となっており、電界強度の値を設定することにより前記通信が成立する手とハンドルとの距離を制御することを特徴とする。   The human body communication control circuit is capable of setting a value of the electric field strength, and by setting the value of the electric field strength, the distance between the hand and the handle at which the communication is established is controlled.

本発明によるハンドル操作検出装置によれば、第１電極を座席のシートクッション又はシートバックに設け、第２電極をハンドルに設け、着座者の周囲に存在する電界を通して、第１電極と第２電極の間の通信を行なう人体通信制御回路を設けたので、着座者の手がハンドルに接触しない状態でも、手がハンドルに接触する前に人体の電界で通信が成り立ち、手がハンドルに接近していることを検知できる。これによれば、自動運転から運転者による手動運転に切り換える時、表示画面の切り換えなどを、手がハンドルを握る前に事前に行なうことができる。   According to the handle operation detecting device of the present invention, the first electrode is provided on the seat cushion or the seat back of the seat, the second electrode is provided on the handle, and the first electrode and the second electrode are passed through the electric field existing around the seated person. Since a human body communication control circuit for communicating between the two is provided, even if the seated person's hand does not touch the steering wheel, communication is established by the electric field of the human body before the hand touches the steering wheel, and the hand approaches the steering wheel. Can be detected. According to this, when the automatic driving is switched to the manual driving by the driver, the display screen can be switched in advance before the hand holds the steering wheel.

人体通信制御回路は、第１電極から送信した識別コードを第２電極が受信したことを確認して、着座者の手がハンドルに接近したことを検知するので、誤検知が防止できる。   Since the human body communication control circuit confirms that the identification code transmitted from the first electrode is received by the second electrode and detects that the seated person's hand approaches the steering wheel, erroneous detection can be prevented.

第１電極が運転席と助手席の両方に設けられる場合、人体通信制御回路は、第２電極の受信した識別コードが、運転席の第１電極の識別コードかどうか確認するようにしたので、助手席の着座者がハンドルに手を接近させてもハンドル操作とは認識しないようにできる。   When the first electrode is provided in both the driver's seat and the passenger's seat, the human body communication control circuit checks whether the identification code received by the second electrode is the identification code of the first electrode in the driver's seat. Even if a passenger sitting in the front passenger's seat approaches his / her hand with the hand, it is possible not to recognize it as a steering wheel operation.

人体通信制御回路は、電界強度の値の設定が可能となっているため、通信が成立する手とハンドルの距離を調節することができる。例えば電界強度の値を大きくすれば、手がハンドルから離れた位置で通信が可能で、値を小さくすれば、手がハンドルに近い位置で通信が可能になる。   Since the human body communication control circuit can set the value of the electric field strength, it is possible to adjust the distance between the hand and the steering wheel with which communication is established. For example, if the value of the electric field strength is increased, communication can be performed at a position where the hand is far from the steering wheel, and if the value is decreased, communication can be performed at a position where the hand is close to the steering wheel.

本発明によるハンドル操作検出装置のブロック図である。It is a block diagram of a steering wheel operation detection device according to the present invention. 第１電極が運転席に、第２電極がハンドルに設けられた例である。In this example, the first electrode is provided on the driver's seat and the second electrode is provided on the steering wheel. ハンドルに手が接近したことを検知する説明図である。FIG. 6 is an explanatory diagram for detecting that a hand approaches a steering wheel. 第１電極がウェアラブル端末に設けられる例と、キーフォブに設けられる例である。There are an example in which the first electrode is provided in the wearable terminal and an example in which the first electrode is provided in the key fob. 第１電極が後部座席の右座席と左座席の両方に設けられ、第２電極が中央のコンソールに設けられる例である。In this example, the first electrode is provided on both the right seat and the left seat of the rear seat, and the second electrode is provided on the central console. コックピットの明かりがオフからオンになる例である。This is an example of turning on the light in the cockpit from off. 運転表示画面が自動運転モードから手動運転モードに切り換わる例である。In this example, the operation display screen is switched from the automatic operation mode to the manual operation mode.

以下、図面を参照して、本発明によるハンドル操作検出装置を説明する。   Hereinafter, a handle operation detecting device according to the present invention will be described with reference to the drawings.

図１は、本発明によるハンドル操作検出装置１００のブロック図である。ハンドル操作検出装置１００は、送信電極の第１電極１と、受信電極の第２電極２と、第１電極１と第２電極２に接続され、着座者１１の人体４の周囲に存在する電界を通して、第１電極１と第２電極２の間の通信を行なう人体通信制御回路３と、からなる。第１電極１は車両内の座席に設けられ、第２電極２はハンドル６に設けられる。人体通信制御回路３は車両内のネットワークに接続されている。電界を介して通信する人体通信は、非接触での通信が可能で、これを車両のハンドル操作の検出に適用したものである。第１電極１と第２電極２と人体通信制御回路３は、車両の内部配線で互いに接続されている。なお、本実施例では、第１電極１を送信電極、第２電極２を受信電極としたが、逆に、第１電極１を受信電極、第２電極２を送信電極としてもよい。   FIG. 1 is a block diagram of a steering wheel operation detecting device 100 according to the present invention. The handle operation detecting device 100 is connected to the first electrode 1 of the transmitting electrode, the second electrode 2 of the receiving electrode, the first electrode 1 and the second electrode 2, and is an electric field existing around the human body 4 of the seated person 11. Through the human body communication control circuit 3 for communicating between the first electrode 1 and the second electrode 2. The first electrode 1 is provided on the seat in the vehicle, and the second electrode 2 is provided on the handle 6. The human body communication control circuit 3 is connected to a network inside the vehicle. Human body communication, which communicates via an electric field, allows non-contact communication, and is applied to detection of steering operation of a vehicle. The first electrode 1, the second electrode 2, and the human body communication control circuit 3 are connected to each other by internal wiring of the vehicle. In the present embodiment, the first electrode 1 is the transmitting electrode and the second electrode 2 is the receiving electrode. However, conversely, the first electrode 1 may be the receiving electrode and the second electrode 2 may be the transmitting electrode.

図２は、第１電極１が運転席９に、第２電極２がハンドル６に設けられた例である。第１電極１は、車両の運転席９のシートクッション又はシートバックに設けられる。第１電極１は、帯状で座席にジグザグ形状にして埋め込まれる。第２電極２は、ハンドル６に環状に埋め込まれる。   FIG. 2 is an example in which the first electrode 1 is provided on the driver's seat 9 and the second electrode 2 is provided on the steering wheel 6. The first electrode 1 is provided on a seat cushion or a seat back of a driver's seat 9 of a vehicle. The first electrode 1 is strip-shaped and is embedded in the seat in a zigzag shape. The second electrode 2 is embedded in the handle 6 in a ring shape.

図３は、ハンドル６に手５が接近したことを検知する説明図である。自動運転中は、運転者の手５はハンドル６から遠く離れているので、第１電極１と第２電極２の人体通信は不成立である。自動運転から手動運転に切り換える際は、運転者は、ハンドル６を握るため、手５をハンドル６に近づける。運転席９に着座している運転者は、臀部又は大腿部が第１電極１に接触しているので、人体４の周囲に存在する電界を介して、手５とハンドル６間に非接触の通信が成立する。従って、手５がハンドル６に接触する前に、手５がハンドル６に接近していることを検知できる。これにより、車両は、手動運転への切り換えを、運転者の手５がハンドル６に接触する前に実行できる。   FIG. 3 is an explanatory diagram for detecting that the hand 5 approaches the handle 6. During automatic driving, since the driver's hand 5 is far away from the steering wheel 6, human body communication between the first electrode 1 and the second electrode 2 is not established. When switching from the automatic driving to the manual driving, the driver holds the steering wheel 6 so that the hand 5 approaches the steering wheel 6. Since the buttocks or thighs of the driver sitting in the driver's seat 9 are in contact with the first electrode 1, there is no contact between the hand 5 and the steering wheel 6 via the electric field existing around the human body 4. Communication is established. Therefore, it is possible to detect that the hand 5 is approaching the handle 6 before the hand 5 contacts the handle 6. This allows the vehicle to switch to manual driving before the driver's hand 5 contacts the steering wheel 6.

図４は、第１電極１がウェアラブル端末７に設けられる例と、キーフォブ８に設けられる例である。すなわち図４（Ａ）は、第１電極１が運転者の腕に装着されるウェアラブル端末７の内部に設けられる例である。図４（Ｂ）は、車のドアの施錠と解錠を行なうキーフォブ８に設けられる例である。これによっても手５とハンドル６間の非接触の人体通信が成立し、手５がハンドル６に接触する前に、手５がハンドル６に接近していることを検知できる。   FIG. 4 shows an example in which the first electrode 1 is provided on the wearable terminal 7 and an example on the key fob 8. That is, FIG. 4A is an example in which the first electrode 1 is provided inside the wearable terminal 7 worn on the arm of the driver. FIG. 4B is an example provided on the key fob 8 for locking and unlocking the door of the vehicle. This also establishes non-contact human body communication between the hand 5 and the handle 6, and it is possible to detect that the hand 5 is approaching the handle 6 before the hand 5 contacts the handle 6.

図５は、第１電極１が後部座席１０の右座席と左座席の両方に設けられ、第２電極２が後部中央のコンソールに設けられる例である。送信電極となる右座席の第１電極１と、同様に送信電極となる左座席の第１電極１には、互いに異なる識別コードが付与される。識別コードにより、中央のコンソールを、右座席の着座者１１が操作したのか、左座席の着座者１１が操作したのか判別できる。中央のコンソールを操作する手５が、右座席の着座者１１の手５か、左座席の着座者１１の手５か識別コードで区別できるので、それに基づき、例えば右座席側の天井灯を点灯するのか、左座席側の天井灯を点灯するかを制御できる。   FIG. 5 is an example in which the first electrode 1 is provided on both the right seat and the left seat of the rear seat 10, and the second electrode 2 is provided on the console at the center of the rear part. Different identification codes are given to the first electrode 1 of the right seat, which is the transmission electrode, and the first electrode 1 of the left seat, which is also the transmission electrode. The identification code makes it possible to determine whether the occupant 11 in the right seat or the occupant 11 in the left seat has operated the central console. The hand 5 for operating the central console can be distinguished from the hand 5 of the seated person 11 in the right seat or the hand 5 of the seated person 11 in the left seat by the identification code. Based on this, for example, the ceiling light on the right seat side is turned on. You can control whether to turn on the ceiling light on the left seat side.

第１電極１は、図２のように運転席９だけでなく、助手席にも設置できる。助手席の第１電極１に付与される識別コードは、運転席９の識別コードとは異なるように設定する。これによれば、助手席の着座者１１が手５をハンドル６に接近させても、運転者の手５ではないと判別できる。これにより助手席の着座者の手のハンドル６側への動きがあっても、手動運転への切り換えを制限できる。なお、人体通信を行なう際、送信電極となる第１電極１は割当てられた識別コードを送信し、受信電極となる第２電極２はこれを受信するよう構成し、人体通信制御回路３は、運転席９の識別コードが受信された場合に限り、手動運転への切り換え処理を行なう。   The first electrode 1 can be installed not only in the driver's seat 9 as shown in FIG. 2 but also in the passenger seat. The identification code given to the first electrode 1 of the passenger seat is set to be different from the identification code of the driver's seat 9. According to this, even if the passenger 11 in the passenger seat brings the hand 5 close to the steering wheel 6, it can be determined that it is not the driver's hand 5. As a result, even if the passenger in the passenger seat moves toward the handle 6 side, the switching to the manual operation can be restricted. When performing human body communication, the first electrode 1 serving as a transmitting electrode is configured to transmit the assigned identification code, and the second electrode 2 serving as a receiving electrode is configured to receive the identification code. Only when the identification code of the driver's seat 9 is received, the switching process to the manual operation is performed.

図６は、コックピットの照明がオフからオンになる例である。。人体通信制御回路３は、運転者の手５の接近を検知すると、ハンドル下側の表示部や、ハンドル前方側の表示部を青色に点灯する。これにより運転者は、自動運転から手動運転への切り換えが開始されたとわかる。   FIG. 6 is an example in which the lighting of the cockpit is changed from off to on. . When the human body communication control circuit 3 detects the approach of the driver's hand 5, the display unit on the lower side of the steering wheel and the display unit on the front side of the steering wheel are lit in blue. This allows the driver to know that the switch from automatic driving to manual driving has started.

図７は、運転表示画面が自動運転モードから手動運転モードに切り換わる例である。表示画面には、自動運転モードでは、地図と目的地までの運転経路が表示されているが、手動運転モードでは、速度計表示、エンジン回転数表示、燃料の残量表示など各種計器の表示に切り換わる。運転者は、自動運転から手動運転への切り換えが開始されたとわかる。   FIG. 7 is an example in which the operation display screen is switched from the automatic operation mode to the manual operation mode. On the display screen, the map and the driving route to the destination are displayed in the automatic driving mode, but in the manual driving mode, it is displayed on various instruments such as the speedometer display, engine speed display, fuel level display, etc. Switch. The driver knows that the switch from automatic driving to manual driving has started.

人体通信制御回路は、電界強度の値の設定が可能となっている。第２電極２が感知する電界は、第１電極１の電圧に比例し、手５とハンドル６との間の距離の二乗に半比例して弱くなる。そこで、電界強度の値を設定し、第１電極１の電圧を変更し、通信が成立する手とハンドルとの距離を制御する。例えば電界強度の値を大きくすれば、手がハンドルから離れた位置で通信が可能になる。値を小さくすれば、手がハンドルに近い位置で通信が可能になる。例として、ハンドルと手までの距離を５ｃｍから３ｃｍに短くしたり、逆に８ｃｍに長くしたりできる。   The human body communication control circuit can set the value of the electric field strength. The electric field sensed by the second electrode 2 is proportional to the voltage of the first electrode 1 and weakens in proportion to the square of the distance between the hand 5 and the handle 6. Therefore, the value of the electric field strength is set, the voltage of the first electrode 1 is changed, and the distance between the hand and the handle where communication is established is controlled. For example, increasing the value of the electric field strength enables communication at a position where the hand is far from the handle. Lowering the value enables communication with the hand close to the steering wheel. As an example, the distance between the handle and the hand can be shortened from 5 cm to 3 cm or conversely increased to 8 cm.

本発明は、運転者の手がハンドルから離れた状態から、ハンドルを握ろうとする動作に入ることを検知できるハンドル操作検出装置として好適である。   INDUSTRIAL APPLICABILITY The present invention is suitable as a steering wheel operation detecting device capable of detecting that a driver's hand is in a state of leaving the steering wheel to start gripping the steering wheel.

１ 第１電極
２ 第２電極
３ 人体通信制御回路
４ 人体
５ 手
６ ハンドル
７ ウェアラブル端末
８ キーフォブ
９ 運転席
１０ 後部座席
１１ 着座者
１００ ハンドル操作検出装置 1 1st electrode 2 2nd electrode 3 Human body communication control circuit 4 Human body 5 Hand 6 Handle 7 Wearable terminal 8 Key fob 9 Driver's seat 10 Rear seat 11 Seated person 100 Handle operation detection device

Claims (4)

座席のシートクッション又はシートバックに設けられた第１電極と、
ハンドルに設けられた第２電極と、
前記第１電極と前記第２電極に接続され、着座者の人体の周囲に存在する電界を通して、前記第１電極と前記第２電極の一方が送信電極とされ、他方が受信電極とされ、送信電極と受信電極間の通信を行なう人体通信制御回路と、
が備えられ、
前記人体通信制御回路は、着座者の手がハンドルに接近すると、手がハンドルに接触する前に、手の周囲の電界を介して、送信電極から受信電極への通信を行ない、手のハンドルへの接近を認識することを特徴とするハンドル操作検出装置。
A first electrode provided on a seat cushion or a seat back of a seat,
A second electrode provided on the handle,
One of the first electrode and the second electrode is a transmitting electrode and the other is a receiving electrode, which is connected to the first electrode and the second electrode and passes through an electric field existing around the human body of the occupant. A human body communication control circuit for performing communication between an electrode and a receiving electrode,
Is equipped with
When the seated person's hand approaches the handle, the human body communication control circuit communicates from the transmitting electrode to the receiving electrode through the electric field around the hand before the hand comes into contact with the handle, and then the handwheel is transferred to the handle. A handle operation detection device characterized by recognizing the approach of a vehicle.
前記人体通信制御回路は、前記送信電極から送信した識別コードを前記受信電極が受信したことを確認して、着座者の手がハンドルに接近したことを検知することを特徴とする請求項１に記載のハンドル操作検出装置。
The human body communication control circuit confirms that the reception electrode has received the identification code transmitted from the transmission electrode, and detects that the seated person's hand approaches the handle. The handle operation detection device described.
前記第１電極が、運転席と助手席の両方に設けられ、前記人体通信制御回路は、助手席の着座者がハンドルに手を接近させても、受信した識別コードが運転席の識別コードでない場合は、ハンドル操作とは認識しないことを特徴とする請求項２に記載のハンドル操作検出装置。
The first electrode is provided in both the driver's seat and the passenger's seat, and the human body communication control circuit is such that the received identification code is not the driver's seat identification code even when the passenger seated in the passenger's seat approaches his or her hand. The handle operation detecting device according to claim 2, wherein the case is not recognized as a handle operation.
前記人体通信制御回路は、電界強度の値の設定が可能となっており、電界強度の値を設定することにより前記通信が成立する手とハンドルとの距離を制御することを特徴とする請求項１に記載のハンドル操作検出装置。   The human body communication control circuit is capable of setting a value of an electric field strength, and by setting a value of the electric field strength, a distance between a hand and a steering wheel with which the communication is established is controlled. 1. The handle operation detecting device according to 1.
JP2018207162A 2018-11-02 2018-11-02 Handle operation detection device Pending JP2020072437A (en)

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KR1020180168206A KR20200050837A (en) 2018-11-02 2018-12-24 Steering operation detection device

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JP7495901B2 (en) 2021-03-31 2024-06-05 株式会社トランストロン Driving assistance device, driving assistance method, and program

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JP6876242B2 (en) 2015-12-24 2021-05-26 株式会社ジェイテクト Handle operation status judgment device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7495901B2 (en) 2021-03-31 2024-06-05 株式会社トランストロン Driving assistance device, driving assistance method, and program

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