WO2018012190A1 - Raccord rotatif - Google Patents

Raccord rotatif Download PDF

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Publication number
WO2018012190A1
WO2018012190A1 PCT/JP2017/022183 JP2017022183W WO2018012190A1 WO 2018012190 A1 WO2018012190 A1 WO 2018012190A1 JP 2017022183 W JP2017022183 W JP 2017022183W WO 2018012190 A1 WO2018012190 A1 WO 2018012190A1
Authority
WO
WIPO (PCT)
Prior art keywords
light emitting
emitting elements
light
rotating body
receiving element
Prior art date
Application number
PCT/JP2017/022183
Other languages
English (en)
Japanese (ja)
Inventor
慶治 村瀬
Original Assignee
株式会社東海理化電機製作所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社東海理化電機製作所 filed Critical 株式会社東海理化電機製作所
Publication of WO2018012190A1 publication Critical patent/WO2018012190A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
    • B60R16/027—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems between relatively movable parts of the vehicle, e.g. between steering wheel and column
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
    • G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
    • G01D5/347—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells using displacement encoding scales
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C23/00—Non-electrical signal transmission systems, e.g. optical systems
    • G08C23/04—Non-electrical signal transmission systems, e.g. optical systems using light waves, e.g. infrared
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
    • H04B10/114—Indoor or close-range type systems

Definitions

  • the present invention relates to a rotating connector that improves communication between a fixed body and a rotating body.
  • a steering roll connector is widely known as a rotary connector that maintains electrical conduction between two parts that rotate with respect to the other.
  • this kind of steering roll connector for example, one that transmits communication data from a rotating body to a stationary body in a non-contact manner through optical communication is well known (see Patent Document 1, etc.).
  • Patent Document 1 is a technique for continuously driving a plurality of light emitting elements, it consumes a large amount of current and hinders power saving.
  • An object of the present invention is to provide a rotary connector capable of reducing power consumption by suppressing power consumption.
  • a plurality of light emitting elements are provided on one of the fixed body and the rotating body, and a light receiving element is provided on the other of them, thereby enabling optical communication between the light emitting element and the light receiving element.
  • an angle determining unit that determines a rotation angle of the rotating body, and a determination by the angle determining unit Based on the result, an element selection unit that selects the light emitting element to be driven among the plurality of light emitting elements is provided.
  • the element selection unit drives at least one of the plurality of light emitting elements close to the light receiving element. According to this configuration, a sufficient amount of light from the light emitting element to the light receiving element can be obtained, so that stable communication feasibility can be realized.
  • the element selection unit drives both the adjacent light emitting elements when the vicinity of the middle of the adjacent light emitting elements comes to the timing facing the light receiving element. According to this configuration, even if the light emitting element is separated from the light receiving element, the next light emitting element is driven in advance, which is more advantageous for obtaining a sufficient amount of light from the light emitting element to the light receiving element. It becomes.
  • the element selection unit can grasp the position of each light emitting element by obtaining a rotation angle formed by each light emitting element with respect to the light receiving element based on the determination result of the angle determination unit. preferable. According to this configuration, the position of each light emitting element can be easily obtained with the position of the light receiving element as a fulcrum.
  • the plurality of light emitting elements are arranged at equal intervals around the axis of the rotating body, and the light receiving element is located at a position facing the moving path of the light emitting element when the rotating body rotates. It is preferable that they are arranged. According to this configuration, since the light emitting elements are arranged at equal intervals in a balanced manner, the light from the light emitting elements can be stably delivered to the light receiving elements. In addition, since the light receiving element is disposed at a position facing the moving path of the light emitting element during rotation, the light receiving element can be disposed at an optimal position where light can easily strike.
  • the element selection unit stops the driving of the light emitting element in the driving state among the plurality of light emitting elements when the driving unit is separated from the light receiving element by a predetermined amount. According to this configuration, it is possible to favorably save power by suppressing that each light emitting element is always driven. In the rotary connector, it is preferable that the maximum number of the light emitting elements that are driven simultaneously among the plurality of light emitting elements is two. According to this configuration, power saving can be achieved as compared with the case where all the light emitting elements are always driven.
  • the perspective view which shows the structure of the rotation connector of one Embodiment.
  • the electrical block diagram of a rotation connector Explanatory drawing which shows the relationship between the binary value of communication data, and light irradiation timing. It is a figure of the rotation connector which shows the drive timing of a light emitting element, (a) is a top view, (b) is a side view. It is a figure of a rotation connector when an adjacent light emitting element is driven simultaneously, (a) is a top view, (b) is a side view.
  • a vehicular rotary connector 1 is attached between a vehicle body 2 on a fixed side and a steering shaft 3 on a rotating side.
  • the rotary connector 1 uses communication between the vehicle body 2 and the steering shaft 3 as non-contact communication, and maintains communication between these two members even when the steering shaft 3 is rotated.
  • the rotary connector 1 transmits the output signal Sout of the detection unit 4 provided on the steering wheel (not shown) to the controller 5 on the vehicle body 2 side.
  • the controller 5 includes an ECU (Electronic Control Unit) that manages the operation of the rotary connector 1, and determines the detection state of the detection unit 4 based on the output signal Sout.
  • ECU Electronic Control Unit
  • the detection unit 4 includes, for example, a switch and a sensor disposed on the steering wheel.
  • the output signal Sout is not limited to an on / off signal detected by, for example, a switch or a sensor, but may be a data signal detected by sensors such as an image sensor.
  • the rotary connector 1 includes a fixed body 8 attached and fixed to the vehicle body 2 and a rotating body 9 that rotates with respect to the fixed body 8. Both the fixed body 8 and the rotating body 9 have a substantially disc shape and are disposed on the same axis (axis L1).
  • the axis L1 is the rotational axis of the steering shaft 3.
  • the fixed body 8 includes a substrate 12 on which electrical components on the fixed body 8 side are mounted.
  • the steering shaft 3 is rotatably inserted through insertion holes 13 and 14 formed at the centers of the fixed body 8 and the substrate 12.
  • the rotating body 9 includes a substrate 15 on which electrical components on the rotating body 9 side are mounted.
  • the steering shaft 3 is inserted into the insertion holes 16 and 17 formed at the centers of the rotating body 9 and the substrate 15 so that they can be integrally rotated.
  • the rotating body 9 is supported by the fixed body 8 and rotates integrally with the steering shaft 3 around the axis L1 (in the direction of arrow R in FIG. 1).
  • the vehicle includes an angle detection unit 18 that detects an angle when the rotating body 9 rotates.
  • the angle detection unit 18 includes, for example, an optical sensor or a magnetic sensor, and can detect the angle of the rotating body 9 in the range of 0 ° to 360 °.
  • the angle detection unit 18 outputs the detected angle detection signal S ⁇ to the controller 5 or the IC of the rotating body 9.
  • the rotary connector 1 adopts an optical communication type communication method in which a signal communicated between the fixed body 8 and the rotating body 9 is notified to the other party through the presence or absence of light.
  • the optical communication type communication method of this example is a method of wirelessly transmitting the output signal Sout of the detection unit 4 on the steering wheel side as communication data Sd from the rotating body 9 side to the fixed body 8 side through optical communication.
  • the communication data Sd constructs binarized information composed of data groups of “0” and “1” by combining light “present” and “absent”. Further, the communication data Sd is preferably a multiplexed signal in which signals output from the plurality of detection units 4 are collected in a time division manner and transmitted to the other party. In optical communication, communication data Sd can be communicated to the other party at high speed (high-speed communication).
  • the rotary connector 1 includes a plurality of light emitting elements 21 that project light in optical communication, and a light receiving element 22 that receives light from the light emitting elements 21.
  • the light emitting elements 21 are attached to the back surface of the substrate 15 and are arranged at equal intervals around the axis L1 of the rotating body 9.
  • the light emitting element 21 is preferably an LED, for example.
  • the reason for providing a plurality of light emitting elements 21 is to allow the light from the light emitting elements 21 to reach the light receiving elements 22 regardless of the rotation angle of the rotating body 9.
  • the light receiving element 22 is attached to the surface of the substrate 12 and is disposed at a position facing the movement path (movement locus) K (see FIGS. 4 and 5) of the light emitting element 21 when the rotating body 9 rotates. Yes.
  • the rotary connector 1 includes an output processing unit 25 that controls the operation of the light emitting element 21.
  • the output processing unit 25 is preferably an IC provided on the rotating body 9 and mounted on the substrate 15, for example.
  • the output processing unit 25 generates a light emission pattern according to the binarized information of the communication data Sd from the light emitting element 21 by switching the process (lighting on / off) of driving or not driving the light emitting element 21. Then, the light receiving element 22 receives the light of this light emission pattern.
  • the rotary connector 1 includes a signal processing unit 26 that acquires communication data Sd from the transmission side (in this example, the output signal Sout of the detection unit 4) based on the light reception signal Sr of the light receiving element 22.
  • the signal processing unit 26 is provided in the controller 5.
  • the signal processing unit 26 determines the data content of the communication data Sd based on the light reception signal Sr input from the light receiving element 22, and executes an operation according to the communication data Sd.
  • the rotary connector 1 has an element drive selection function for selecting and driving only a part of the light emitting elements 21 corresponding to the rotation angle ⁇ of the rotating body 9 among the plurality of light emitting elements 21. This is because, if all of the plurality of light emitting elements 21 are always driven, the power for driving the light emitting elements 21 increases and power saving cannot be achieved. Therefore, the light emitting elements 21 are selected by the element driving selection function of this example. To achieve power saving.
  • the rotary connector 1 includes an angle determination unit 29 that determines the rotation angle ⁇ of the rotating body 9.
  • the angle determination unit 29 is provided in the rotating body 9 (IC of the rotating body 9), and determines the rotation angle ⁇ (rotation position) of the rotating body 9 based on the angle detection signal S ⁇ input from the angle detection unit 18. It is preferable that the angle determination unit 29 can detect the rotation angle ⁇ of the rotating body 9 with a resolution of several degrees, for example.
  • the rotary connector 1 includes an element selection unit 30 that selects a plurality of light emitting elements 21 to be driven based on the determination result of the angle determination unit 29.
  • the element selection unit 30 is provided in the rotating body 9 (IC of the rotating body 9), and selects the light emitting element 21 to be driven among the plurality of light emitting elements 21 based on the determination result of the angle determination unit 29.
  • the element selection unit 30 of the present example grasps the position of each light emitting element 21 by obtaining the rotation angle ⁇ that each light emitting element 21 forms with respect to the light receiving element 22 based on the determination result of the angle determination unit 29. .
  • the element selection unit 30 drives at least the light emitting element 21 closest to the light receiving element 22.
  • the output processing unit 25 when various operations are detected by the detection unit 4 in the steering wheel, the output processing unit 25 outputs the communication data Sd having a binary code corresponding to the output signal Sout input from the detection unit 4. Then, it transmits to the fixed body 8 side through optical communication.
  • the output processing unit 25 turns on the light emitting element 21 when outputting the binary information equivalent to “1”, and outputs the light emitting element 21 when outputting the binary information equivalent to “0”. Turn off the light.
  • the output processing unit 25 constructs the communication data Sd of the binarized information by turning on / off the light emitting element 21 and transmits it to the fixed body 8 side.
  • the element selection unit 30 performs data transmission by turning on only the appropriate light emitting element 21 according to the rotation angle ⁇ of the rotating body 9. That is, the element selection unit 30 grasps the current rotation angle ⁇ of the rotating body 9 based on the determination result of the angle determination unit 29 and drives only the light emitting element 21 corresponding to the rotation angle ⁇ .
  • the rotation angle ⁇ in this example moves away from this point, with the position of the light receiving element 22 in the rotation direction of the rotating body 9 (the direction of arrow R in FIG. 1) as the angle measurement start point (FIG. 4A). It is assumed that the angle increases from “0 °” to “360 °” as it rotates in the counterclockwise direction.
  • the element selection unit 30 selectively drives the one closest to the light receiving element 22 among the plurality of light emitting elements 21 to execute data communication.
  • the element selection unit 30 emits light from the plurality of light emitting elements 21 whose rotation angle ⁇ formed with the light receiving element 22 is equal to or greater than a specified value ⁇ k (for example, about 330 ° to 340 °). Let Thereby, the light receiving element 22 closest to the light receiving element 22 emits light.
  • the light emitting element 21 that is in a driving state, that is, a lighting state, is stopped or turned off by the element selection unit 30 when it is separated from the light receiving element 22 by a predetermined amount (for example, an angle formed with the light receiving element 22 is about 45 °). Is preferred.
  • the element selector 30 drives both the adjacent light emitting elements 21a and 21b when the light receiving element 22 is located near the middle of the adjacent light emitting elements 21a and 21b. It is preferable. That is, when the light emitting element 21a that has first approached the light receiving element 22 is under lighting, the light emitting element 21b to be driven next approaches the light receiving element 22 and at the timing when the light receiving element 22 is positioned at an intermediate position thereof. The next light emitting element 21b is also lit in advance. Thereby, even if the light emitting element 21a that has been turned on first is separated, the light amount emitted from the light emitting element 21 to the light receiving element 22 is sufficiently obtained by lighting the next light emitting element 21b in advance. .
  • the element selection unit 30 drives at least the light emitting element 21 closest to the light receiving element 22. Accordingly, it is possible to irradiate a sufficient amount of light from the light emitting element 21 to the light receiving element 22, and thus stable communication can be established.
  • the element selection unit 30 drives both the adjacent light emitting elements 21 when the vicinity of the middle of the adjacent light emitting elements 21 reaches the light receiving element 22 when the rotating body 9 rotates. Therefore, even if the light emitting element 21 is separated from the light receiving element 22, the next light emitting element 21 is driven in advance, so that a sufficient amount of light from the light emitting element 21 to the light receiving element 22 can be obtained. It becomes even more advantageous.
  • the element selection unit 30 grasps the position of each light emitting element 21 by obtaining the rotation angle ⁇ that each light emitting element 21 forms with respect to the light receiving element 22 based on the determination result of the angle determination unit 29. Therefore, the position of each light emitting element 21 can be easily determined with the position of the light receiving element 22 as a fulcrum.
  • the plurality of light emitting elements 21 are arranged at equal intervals around the axis L1 of the rotating body 9. As described above, since the light emitting elements 21 are arranged at equal intervals in a balanced manner, the light of the light emitting elements 21 can be stably delivered to the light receiving elements 22.
  • the light receiving element 22 is disposed at a position facing the movement path K of the light emitting element 21 when the rotating body 9 rotates. Therefore, the light receiving element 22 can be disposed at an optimal position where light can easily strike.
  • the embodiment is not limited to the configuration described so far, and may be modified as follows.
  • the light emitting element 21 may be provided on the fixed body 8 and the light receiving element 22 may be provided on the rotating body 9.
  • the arrangement of the light emitting elements 21 is not limited to the equidistant arrangement, and may be arranged in any way.
  • the light emitting element 21 can apply members other than LED.
  • the light emitting element 21 and the light receiving element 22 are not limited to being provided on the substrates 12 and 15, but may be disposed on the fixed body 8 or the rotating body 9.
  • the angle determination unit 29 is not limited to using the angle detection unit 18 such as a steering angle sensor, and may be any member that can detect the rotation amount of the rotating body 9. In selecting and driving the light emitting elements 21, which light emitting elements 21 are lit can be changed to patterns other than the embodiment.
  • route by optical communication is not restricted to implement
  • the communication data Sd is not limited to a multiplexed signal, and may be data constructed only from the output of one detection unit 4.
  • Rotating connector 1 is not limited to being applied to a vehicle, and may be used for other devices and apparatuses.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

Selon l'invention, un raccord rotatif (1) comprend une pluralité d'éléments émettant de la lumière (21) disposés sur un élément parmi un élément fixe (8) et un corps tournant (9) et un élément récepteur de lumière (22) disposé sur l'autre, ledit raccord rotatif permettant une communication optique entre le corps fixe et le corps tournant dans des conditions où la rotation du corps tournant est permise. Le raccord rotatif (1) est aussi équipé d'une unité de détermination d'angle (29) qui détermine l'angle de rotation du corps tournant (9) et d'une unité de sélection d'élément (30) qui sélectionne un élément émettant de la lumière comme élément devant être commandé parmi la pluralité d'éléments émettant de la lumière (21) en fonction du résultat de détermination de l'unité de détermination d'angle.
PCT/JP2017/022183 2016-07-11 2017-06-15 Raccord rotatif WO2018012190A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016-136907 2016-07-11
JP2016136907A JP2018011123A (ja) 2016-07-11 2016-07-11 回転コネクタ

Publications (1)

Publication Number Publication Date
WO2018012190A1 true WO2018012190A1 (fr) 2018-01-18

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PCT/JP2017/022183 WO2018012190A1 (fr) 2016-07-11 2017-06-15 Raccord rotatif

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JP (1) JP2018011123A (fr)
WO (1) WO2018012190A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7491567B2 (ja) 2020-09-29 2024-05-28 トクデン株式会社 誘導発熱ローラ装置、及び、誘導発熱ローラ装置に用いられる信号伝送装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114520448B (zh) * 2020-11-19 2023-04-07 比亚迪股份有限公司 射频连接器、馈线器、车载接入单元及轨道交通系统

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04154226A (ja) * 1989-12-14 1992-05-27 Ampex Corp 回転固定の両装置を電気的に相互連結する光学装置
JP2009147942A (ja) * 2007-12-17 2009-07-02 Siemens Ag 光信号の伝送装置および方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04154226A (ja) * 1989-12-14 1992-05-27 Ampex Corp 回転固定の両装置を電気的に相互連結する光学装置
JP2009147942A (ja) * 2007-12-17 2009-07-02 Siemens Ag 光信号の伝送装置および方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7491567B2 (ja) 2020-09-29 2024-05-28 トクデン株式会社 誘導発熱ローラ装置、及び、誘導発熱ローラ装置に用いられる信号伝送装置

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