WO2016113806A1 - Dispositif de détection d'opération tactile, dispositif d'entrée d'opération tactile et procédé de détection d'opération tactile - Google Patents

Dispositif de détection d'opération tactile, dispositif d'entrée d'opération tactile et procédé de détection d'opération tactile Download PDF

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Publication number
WO2016113806A1
WO2016113806A1 PCT/JP2015/006338 JP2015006338W WO2016113806A1 WO 2016113806 A1 WO2016113806 A1 WO 2016113806A1 JP 2015006338 W JP2015006338 W JP 2015006338W WO 2016113806 A1 WO2016113806 A1 WO 2016113806A1
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WIPO (PCT)
Prior art keywords
contact
touch operation
load
detected
touch
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PCT/JP2015/006338
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English (en)
Japanese (ja)
Inventor
俊輔 柴田
服部　敏弘
三摩　紀雄
泉樹 立入
整 伊口
Original Assignee
株式会社デンソー
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Priority claimed from JP2015200616A external-priority patent/JP2016131014A/ja
Application filed by 株式会社デンソー filed Critical 株式会社デンソー
Publication of WO2016113806A1 publication Critical patent/WO2016113806A1/fr

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    • 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
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means

Definitions

  • the present disclosure relates to a touch operation detection device, a touch operation input device, and a touch operation detection method for performing an input operation by detecting a touch operation in which a finger is brought into contact with an operation surface.
  • Conventional input devices are generally operated by pressing a button, but nowadays, input devices operated by touching the operation surface with a finger are widely used.
  • a touch display that provides various input operations by providing a transparent operation surface on a display screen capable of displaying various images and touching the operation surface where the image is displayed is widely used. Yes.
  • a touch pad that performs various input operations by displaying a cursor on a display screen, moving a finger while touching an operation surface, and moving the position of the cursor is also widely used.
  • This disclosure is intended to provide a touch operation detection device, a touch operation input device, and a touch operation detection method that increase the detection sensitivity of a touch operation without causing a malfunction.
  • the touch operation detection device that detects a touch operation in which a finger is brought into contact with the operation surface includes a contact position on the operation surface and a contact load on the operation surface that accompany the contact with the operation surface.
  • a contact detection unit for detecting the contact position, a movement distance detection unit for detecting a movement distance of the contact position from the start of the contact to the operation surface to the end of the contact, the contact load and the movement distance includes a touch operation detection unit that detects the contact as the touch operation when satisfying a predetermined relationship.
  • the movement distance and the contact load do not satisfy a predetermined relationship, so that the touch operation is not erroneously detected. As a result, it is possible to increase the detection sensitivity of the touch operation without erroneous detection.
  • a touch operation input device that operates by detecting a touch operation in which a finger is brought into contact with an operation surface includes an operation plate on which the operation surface is formed, and protruding from both sides of the operation plate. And a load couple detection unit for detecting a load and a couple transmitted from the operation plate to the holding unit via the connection part.
  • a contact for detecting a contact position on the operation surface and a contact load on the operation surface in accordance with the contact with the operation surface based on the load and the couple detected by the load couple detection unit A detection unit, a movement distance detection unit that detects a movement distance of the contact position from the start of contact with the operation surface to the end of the contact, and the contact load and the movement distance have a predetermined relationship. If so, the contact is And a touch operation detection section that detects a pitch operation.
  • the movement distance and the contact load do not satisfy a predetermined relationship, so that the touch operation is not erroneously detected. As a result, it is possible to increase the detection sensitivity of the touch operation without erroneous detection.
  • a touch operation detection method for detecting a touch operation in which a finger is brought into contact with the operation surface includes a contact position on the operation surface and a contact load on the operation surface accompanying the contact with the operation surface. Detecting the movement distance of the contact position from the start of contact with the operation surface to the end of the contact, and the contact load and the movement distance have a predetermined relationship. And detecting the contact as the touch operation when satisfying.
  • the movement distance and the contact load do not satisfy a predetermined relationship, so that the touch operation is not erroneously detected. As a result, it is possible to increase the detection sensitivity of the touch operation without erroneous detection.
  • FIG. 1A and FIG. 1B are explanatory diagrams of a touch operation input device equipped with the touch operation detection device of the first embodiment.
  • FIG. 2A and FIG. 2B are explanatory diagrams of a distortion detection unit employed in the touch operation detection device of the first embodiment.
  • FIG. 3 is a block diagram showing the internal structure of the touch operation detection device according to the first embodiment.
  • 4 (a) to 4 (d) are explanatory views showing the principle by which the touch operation detection device of the first embodiment detects the contact position and the contact load.
  • FIG. 5 is a flowchart of the touch operation detection process executed by the touch operation detection device according to the first embodiment.
  • FIG. 6 is an explanatory diagram illustrating a result of the touch operation detection device according to the first embodiment determining a touch operation mode.
  • FIG. 7 is a flowchart of the touch operation detection process of the first modification of the first embodiment.
  • FIG. 8A and FIG. 8B are explanatory diagrams showing the result of determining the mode of the touch operation in the touch operation detection process of the first modified example of the first embodiment.
  • FIG. 9 is a block diagram showing the internal structure of the touch operation detecting device of the second modification of the first embodiment
  • FIG. 10 is a flowchart of the touch operation detection process of the second modification of the first embodiment.
  • FIG. 11A and FIG. 11B are explanatory diagrams for the cancellation condition of the third modification of the first embodiment.
  • FIG. 11A and FIG. 11B are explanatory diagrams for the cancellation condition of the third modification of the first embodiment.
  • FIG. 12 is a block diagram illustrating an internal structure of the touch operation detection device according to the second embodiment.
  • FIG. 13 is a flowchart of the touch operation detection process executed by the touch operation detection device according to the second embodiment.
  • FIG. 14A and FIG. 14B are explanatory diagrams showing the result of determining the mode of the touch operation in the touch operation detection process of the second embodiment.
  • FIG. 15 is an explanatory diagram illustrating the internal structure of the touch operation input device according to the third embodiment.
  • FIG. 16 is an explanatory diagram illustrating the internal structure of a touch operation input device according to a modification of the third embodiment.
  • FIG. 1A shows the external shape of a touch operation input device 10 equipped with the touch operation detection device 100 of the first embodiment.
  • the touch operation input device 10 of the first embodiment is roughly formed in a thin rectangular parallelepiped shape, and is formed by covering the opening portion of the frame body 15 formed in a shallow dish shape with a cover plate 11.
  • the cover plate 11 is provided with a large opening window 11w, and the operation surface 12a can be touched from the opening window 11w.
  • FIG. 1B shows an exploded view of the touch operation input device 10.
  • a rectangular operation plate 12 having an operation surface 12 a formed on the upper surface side is accommodated inside the frame body 15, and an elongated rectangular holding plate 13 is provided on both sides of the operation plate 12. It is arranged one by one. From the center on both sides of the operation plate 12, a rod-like connecting portion 12b is projected toward the holding plate 13, and the distal end side of the connecting portion 12b is attached to the lower surface side of the center of the holding plate 13 by bonding or screwing. It is attached. Furthermore, a strain detection unit 14 to be described later is attached to the holding plate 13 so as to sandwich the position where the connecting portion 12b is attached.
  • the holding plates 13 are provided on both sides of the operation plate 12, and the strain detectors 14 are attached to the respective holding plates 13 at two locations. Therefore, the strain detectors 14 are attached to four locations in total. It will be. In the present embodiment, the strain detection unit 14 is attached to the upper surface side of the holding plate 13, but the strain detection unit 14 may be attached to the lower surface side of the holding plate 13.
  • the frame body 15 is formed with mounting bases 15a projecting upward, and the holding plates 13 provided on both sides of the operation plate 12 are respectively located between the two mounting bases 15a. Is mounted and fixed on the mounting table 15a. As a result, the operation plate 12 is accommodated in the frame 15 in a suspended state in which the connecting portion 12b is supported by the holding plates 13 on both sides.
  • the cover plate 11 is covered from above and fixed to the frame body 15.
  • a gap is secured between the upper surface of the holding plate 13 and the lid plate 11 at this time, and the holding plate 13 can be bent and deformed without contacting the lid plate 11.
  • a processing circuit for calculating a contact position and a contact load on the operation surface 12a by performing a predetermined calculation process on the output of the distortion detection unit 14 in the frame body 15. 100).
  • the strain detector 14 is formed by connecting four strain gauges 14a, 14b, 14c, and 14d.
  • the strain gauge is a strain element whose resistance value changes depending on the magnitude of strain.
  • a bridge circuit as shown in FIG. 2B instead of using a strain gauge alone, the effects of various errors can be suppressed, and as a result, the amount of strain can be detected with high accuracy. can do.
  • FIG. 3 shows a rough internal structure of the touch operation detection device 100 of the first embodiment.
  • the touch operation detection device 100 includes a contact detection unit 101, a movement distance detection unit 102, a touch operation detection unit 103, a threshold distance storage unit 104, a touch operation determination unit 105, a cancellation condition determination unit 106, and a cancellation unit 107. It has.
  • these “parts” are classified for convenience in the inside of the touch operation detection device 100, focusing on the function for detecting the touch operation on the operation surface 12a. It does not indicate that the inside is physically divided into these “parts”. Therefore, these “units” can be realized by a program operating on the CPU, or can be realized by a logic circuit such as a CPU or a memory.
  • the contact detection unit 101 is connected to the four strain detection units 14. When a finger or the like touches the operation surface 12 a, the strain detection unit 14 detects distortion. The contact detection unit 101 calculates a position (contact position) where a finger or the like touches the operation surface 12a and a contact load at that time based on the distortion amounts detected by the four distortion detection units 14. The principle of calculating the contact position and the contact load on the operation surface 12a from the strain amount detected by the strain detector 14 will be described later with reference to another drawing.
  • the movement distance detection unit 102 acquires from the contact detection unit 101 the contact position when the finger or the like touches the operation surface 12a and the contact position when the finger or the like leaves, and the contact position on the operation surface 12a.
  • the moving distance of is detected.
  • the moving distance may be calculated by connecting a straight line between the contact position when the finger or the like is touched and the contact position when the finger or the like is released, but the finger or the like touches the operation surface 12a. It is also possible to calculate the distance that the contact position has moved from the time of moving away from the distance to the moving distance.
  • the touch operation detection unit 103 When the touch operation detection unit 103 acquires the contact load from the contact detection unit 101, the touch operation detection unit 103 refers to the threshold distance storage unit 104 to acquire a threshold distance corresponding to the contact load. Then, the movement distance acquired from the movement distance detection unit 102 is compared with the threshold distance, and when the movement distance is larger than the threshold distance, contact with the operation surface 12a is detected as a touch operation. On the other hand, when the movement distance is not greater than the threshold distance, the contact with the operation surface 12a is not detected as a touch operation.
  • the cancellation condition determination unit 106 acquires the contact load from the contact detection unit 101, determines whether or not the contact load satisfies a predetermined cancellation condition, and outputs the determination result to the cancellation unit 107. Details of the cancellation condition will be described later.
  • the cancel unit 107 receives the detection result of the touch operation from the touch operation detection unit 103, and receives the determination result as to whether or not the contact load satisfies the cancel condition from the cancellation condition determination unit 106. If the contact load does not satisfy the cancel condition, the detection result of the touch operation detected by the touch operation detection unit 103 is output to the touch operation determination unit 105. On the other hand, when the contact load satisfies the cancel condition, the detection result of the touch operation detected by the touch operation detection unit 103 is canceled. For this reason, the touch operation detection result is not output to the touch operation determination unit 105. The reason for doing this will be described in detail later.
  • the touch operation determination unit 105 receives the detection result of the touch operation obtained by the touch operation detection unit 103, the touch operation is determined as a tap operation, a flick operation, or a swipe based on the movement distance detected along with the touch operation. It is determined which operation is performed. That is, when the movement distance of the touch operation is short, the touch operation is determined as a tap operation, when the movement distance is long, it is determined as a swipe operation, and when it is an intermediate movement distance, it is determined as a flick operation. To do.
  • the threshold distance for determining whether the touch operation is a tap operation, a flick operation, or a swipe operation the threshold distance stored in the threshold distance storage unit 104 can be used. . In FIG.
  • a dashed arrow is displayed from the threshold distance storage unit 104 to the touch operation determination unit 105 because the touch operation determination unit 105 can read out the threshold distance from the threshold distance storage unit 104 and use it. It represents something.
  • the touch operation determination unit 105 determines whether the touch operation is a tap operation, a flick operation, or a swipe operation, the result is output to the outside.
  • the touch operation detection device 100 of the first embodiment when contact with the operation surface 12a is detected, the contact load and the moving distance at that time are detected. And when they satisfy the predetermined conditions mentioned later, it detects as a touch operation to the operation surface 12a. Although the detailed reason will be described later, by doing so, it is possible to avoid erroneously detecting noise as a touch operation, so that the detection sensitivity of the touch operation can be increased. As a result, even when a touch operation is performed so as to lightly touch the operation surface 12a, a comfortable input operation can be realized in response to the touch operation.
  • the touch operation input device 10 can simultaneously detect a contact load when detecting a contact position on the operation surface 12a. Therefore, it is possible to increase the detection sensitivity of the touch operation without causing a malfunction, while keeping the structure of the touch operation input device 10 as it is.
  • the operation plate 12 tends to rotate in the direction indicated by the thick solid arrow in the drawing, with the axis connecting the connecting portions 12b protruding from both sides as the rotation axis. If the rotation axis at this time is the X axis, and further, the axis orthogonal to the X axis and parallel to the operation surface 12a is the Y axis, and the coordinates of the point A are (xa, ya), the operation plate 12 will be rotated.
  • the magnitude of the couple M is given by F ⁇ ya.
  • the contact load F received by the point A is also distributed and transmitted to the holding plates 13 on both sides via the connecting portion 12b.
  • a load Fa is applied to the left holding plate 13, and a load is applied to the right holding plate 13.
  • Fb is applied.
  • the holding plate 13 has a so-called doubly-supported beam structure in which both sides are fixed by the mounting table 15a, and is located at a position where the central connecting portion 12b is attached. Loads and couples are applied. Furthermore, the material and cross-sectional shape of the holding plate 13 are known. In such a case, if the beam theory of material mechanics is used, the bending which generate
  • FIG. 4B shows the bending that occurs in the holding plate 13 when the load Fa and the couple Ma act on the center position of the holding plate 13. Assume that the magnitude of the couple Ma is zero. In this case, since the center of the holding plate 13 is pushed down by the load Fa, the holding plate 13 bends symmetrically in the drawing. Further, the amount of deflection increases as the load Fa increases.
  • the load and the couple acting on the center of the holding plate 13 are known, the bending generated in the holding plate 13 can be determined. Or, conversely, if the amount of deflection occurring in the holding plate 13 is known, the load and couple acting on the center of the holding plate 13 can be obtained.
  • the amount of bending generated in the holding plate 13 can be calculated using the amount of strain generated on the upper surface (or lower surface) of the holding plate 13.
  • the strain detectors 14 may be attached to the left and right two locations in the center of the holding plate 13 to measure the amount of strain. And the amount of bending can be calculated
  • the load Fa and the couple Ma applied to the left holding plate 13 of the operation plate 12 and the load Fb and the couple Mb applied to the right holding plate 13 are thus obtained. Determine (see FIG. 4A).
  • the contact load F can be calculated by adding the load Fa and the load Fb applied to the left and right holding plates 13. Further, the coordinate value ya of the point A can be calculated by the equation (1) in FIG. 4C by considering the balance of the couple around the X axis. Further, the coordinate value xa of the point A can be calculated by the equation (2) in FIG. 4D by considering the balance of the couple around the Y axis.
  • the touch operation detection device 100 calculates a contact position and a contact load on the operation surface 12a by performing a predetermined calculation on the distortion amount detected by the distortion detection unit 14. Furthermore, by making use of the fact that the contact position and contact load can be obtained at the same time, it is possible to detect touch operations with high sensitivity without causing malfunctions by performing the following touch operation detection processing. It has become.
  • the touch operation detection process of the first embodiment first, it is determined whether or not a contact with the operation surface 12a is detected (S101). As described above with reference to FIGS. 4A to 4D, when a finger or the like comes into contact with the operation surface 12a, the holding plates 13 provided on the left and right sides of the operation plate 12 are deformed. Distortion is detected. Therefore, the touch operation detection device 100 can determine whether or not the operation surface 12a is touched based on whether or not the distortion is detected by the distortion detection unit 14.
  • the tap load Pt is the following load.
  • the touch operation on the operation surface 12a by the operator includes a tap operation for operating the operation surface 12a, a flick operation for operating the operation surface 12a short, and a stroke of the operation surface 12a. It can be roughly divided into swipe operations.
  • the contact load on the operation surface 12a has a large value
  • the contact load tends to have a small value.
  • the contact load during the flick operation is usually smaller than that of the tap operation but larger than that of the swipe operation. Therefore, from the magnitude of the contact load detected with the touch operation, it can be estimated whether the mode of the touch operation is a tap operation, a flick operation, or a swipe operation.
  • the tap load Pt is a load set as a threshold for determining whether the touch operation is estimated as a tap operation or a flick operation. If the contact load is larger than the tap load Pt, the touch operation can be estimated as a tap operation.
  • the threshold distance is set for detecting the tap operation.
  • the value Lt is set (S104).
  • the threshold distance is the following distance. As described above, the manner in which the operator touches the operation surface 12a can be broadly divided into tap operations, flick operations, and swipe operations.
  • the contact position moves a long distance after the contact with the operation surface 12a is detected until the contact is not detected.
  • the tap operation operated so as to hit the operation surface 12a the contact position does not move in principle.
  • the flick operation that operates so as to flip the operation surface 12a the distance that the contact position moves from when the contact to the operation surface 12a is detected until the contact is not detected is shorter than that in the case of the swipe operation. . Therefore, from the movement distance of the contact position detected with the touch operation, it can be estimated whether the touch operation mode is a tap operation, a flick operation, or a swipe operation.
  • the threshold distance is a distance set as a threshold for estimating whether the touch operation is a tap operation, a flick operation, or a swipe operation based on the movement distance. Therefore, the tap operation detection value Lt, the flick operation detection value Lf (however, larger than Lt), and the swipe operation detection value Ls (however, larger than Lf) are set as the threshold distance. ing. In this embodiment, 0 is set as the tap operation detection value Lt.
  • the flick load Pf is a load set as a threshold for determining whether the touch operation is estimated as a flick operation or a swipe operation. That is, the contact load is smaller than the tap load Pt (S103: no), and therefore, it is estimated that the touch operation is not a tap operation. Therefore, in order to determine whether a flick operation or a swipe operation is performed, the contact operation is performed.
  • the load is compared with the flick load Pf.
  • the flick load Pf is set to a value smaller than the tap load Pt. If the contact load is smaller than the tap load Pt but larger than the flick load Pf, the touch operation can be estimated as a flick operation.
  • the threshold distance is set to the value Lf for detecting the flick operation (S106).
  • the threshold distance is set to the value Ls for detecting the swipe operation (S107).
  • the movement distance of the contact position with the operation surface 12a is detected (S110).
  • This moving distance can be obtained by calculating the distance between the contact position when contact is detected and the contact position when contact is released.
  • the contact position can be calculated every moment. Therefore, the movement distance may be obtained by accumulating the distance the contact position has moved on the operation surface 12a. Absent.
  • the movement distance thus obtained exceeds a preset threshold distance (S111).
  • a preset threshold distance S111: yes
  • contact with the operation surface 12a is detected as a touch operation.
  • the detected touch operation mode is determined.
  • the maximum value of the contact load is the maximum value of the contact load monitored after the contact is detected until the contact is released.
  • the condition that “the maximum value of the contact load exceeds the cancel load Pc” is the cancel condition. If the maximum value of the contact load exceeds the cancel load Pc, the cancel condition is satisfied.
  • the mode of the touch operation is determined based on the movement distance (S113). That is, if the moving distance is larger than a predetermined threshold (for example, a threshold distance Ls for detecting a swipe operation), it is determined that the touch operation mode is a swipe operation. If the movement distance is smaller than the threshold but larger than another threshold smaller than the threshold (for example, the threshold distance Lf for detecting the flick operation), it is determined that the touch operation mode is a flick operation. Furthermore, when it is smaller than the another threshold value, it is determined that the touch operation mode is a tap operation.
  • a predetermined threshold for example, a threshold distance Ls for detecting a swipe operation
  • FIG. 6 shows the result of the touch operation detection device 100 according to the first embodiment determining whether or not the touch operation is a false detection and the mode of the touch operation based on the relationship between the contact load and the movement distance. It is shown. As shown in FIG. 6, even when a touch operation is detected, if the contact load exceeds a predetermined cancel load Pc, it is determined that the touch operation is canceled (that is, a cancel operation). Is done.
  • a threshold distance is set according to the contact load.
  • the contact is detected as a touch operation.
  • the contact load is small enough to be detected. Even in such a case, if contact is detected over a certain distance, the contact is unlikely to be due to noise or the like.
  • the moving distance is short, there is a high possibility that noise or the like is erroneously detected. Therefore, when the movement distance is larger than the threshold distance Ls for swipe detection, it is determined that the contact is caused by the swipe operation of the operation surface 12a, and when the movement distance is smaller than the threshold distance Ls. It is determined that noise or the like has been erroneously detected.
  • the contact load is a sufficiently large value (for example, a value larger than the tap load Pt).
  • the load is too large for erroneous detection of noise or the like, it may be determined that the touch operation is actually performed. Therefore, when the moving distance is smaller than the threshold distance Lf for detecting the flick operation, it is determined that the tap operation is performed, and the moving distance is larger than the threshold distance Lf for detecting the flick operation, but is larger than the threshold distance Ls for detecting the swipe operation. Is smaller, it is determined that the flick operation has been performed.
  • the moving distance is compared with the threshold distance Lf for detecting the flick operation.
  • the threshold distance Lf for detecting the flick operation.
  • the contact load is monitored until the contact is released after the contact with the operation surface 12a is detected, and the maximum value of the contact load is the cancel load Pc. Is exceeded (S112: yes in FIG. 5), the detected touch operation is canceled.
  • a situation in which an erroneous touch operation is noticed may be noticed after the finger is released from the operation surface 12a to complete the touch operation, but may be noticed before the finger is released from the operation surface 12a.
  • an erroneous touch operation can be canceled by performing a predetermined cancel operation.
  • the finger has not been released from the operation surface 12a when the user notices that the touch operation is wrong. Further, it is assumed that the finger has to be released from the operation surface 12a in order to cancel the touch operation. In this case, by releasing the finger from the operation surface 12a, an erroneous touch operation is once confirmed, and then a cancel operation is performed again. This is a hassle twice, and since I noticed an error before releasing my finger, it would be convenient to take advantage of that and save the trouble.
  • the touch operation input device 10 when the operator notices an incorrect touch operation, if the finger has not yet been released from the operation surface 12a, the operation surface 12a can be pressed firmly as it is. An erroneous touch operation can be canceled. For this reason, the operability of the touch operation input device 10 can be greatly improved.
  • a cancel operation needs to be performed again.
  • an erroneous touch operation is noticed after the finger is released from the operation surface 12a, the erroneous touch operation has already been confirmed, so that it is not troublesome. Therefore, the touch operation input device 10 The operability of is not impaired.
  • the touch operation input device 10 of the first embodiment can increase the detection sensitivity of the touch operation without erroneously detecting noise or the like, and as a result, it is comfortable even for light operations. Thus, it is possible to realize the touch operation input device 10 that operates in a simple manner.
  • the threshold distance for tap operation detection, flick operation detection, or swipe operation detection is set by comparing the detected contact load with the tap load Pt or the flick load Pf.
  • the threshold distance does not necessarily need to be set for tap operation detection, flick operation detection, and swipe operation detection.
  • a threshold distance that continuously changes according to the contact load may be set. .
  • FIG. 7 shows a flowchart of the touch operation detection process of the first modified example.
  • the touch operation detection process of the first modified example shown in FIG. 5 is different from the touch operation detection process of the first example described with reference to FIG. 5 in that a threshold distance that changes continuously according to the contact load is set. Is different.
  • the touch operation detection process of the first modification will be briefly described focusing on the differences from the first embodiment.
  • the touch operation detection process of the first modified example first, it is determined whether or not contact with the operation surface 12a is detected (S131). When the contact is not detected (S131: no), the same determination is repeated until the contact is detected. When contact with the operation surface 12a is detected (S131: yes), a contact position and a contact load with respect to the operation surface 12a are calculated (S132).
  • FIG. 8A illustrates how the threshold distance is set according to the contact load. As illustrated, the threshold distance is set to a larger value as the contact load becomes smaller. It should be noted that the threshold distance becomes 0 when the contact load becomes a certain magnitude, and the threshold distance can remain 0 even if the contact load becomes a value larger than that.
  • a threshold distance S137
  • S137 when the movement distance exceeds the threshold distance (S137: yes), contact with the operation surface 12a is detected as a touch operation. Then, the detected touch operation mode is determined. Prior to that, it is determined whether or not the maximum value of the contact load exceeds a predetermined cancel load Pc (S138).
  • the maximum value of the contact load is the maximum value of the contact load from when contact is detected until it is released.
  • the detected touch operation mode is determined based on the movement distance (S139). That is, as shown in FIG. 8B, a threshold distance Ls for detecting a swipe operation, a threshold distance Lf for detecting a flick operation, or a threshold distance Lt for detecting a tap operation is set in advance and moved. By comparing the distance, it is determined that the operation is a swipe operation, a flick operation, or a tap operation.
  • the first modification described above has the following effects in addition to the effects of the first embodiment described above.
  • the threshold distance can be increased as the contact load decreases. For this reason, even a light touch operation that can be barely detected can be detected without erroneous detection.
  • FIG. 9 shows the internal structure of the touch operation detection device 150 of the second modification of the first embodiment.
  • the touch operation detection device 150 according to the second modification is different from the touch operation detection device 100 according to the first embodiment described above with reference to FIG.
  • the point that is input to the unit 105 is significantly different from the point that the cancel unit 107 is not provided.
  • the touch operation detection device 150 according to the second modification of the first embodiment will be briefly described with a focus on differences from the first embodiment.
  • about the same structure as 1st Example detailed description is abbreviate
  • the touch operation detection device 150 includes a contact detection unit 101, a movement distance detection unit 102, a touch operation detection unit 103, a threshold distance storage unit 104, a touch operation determination unit 105, and a cancel condition determination unit 106. . These parts have the following functions.
  • the contact detection unit 101 calculates a position (contact position) where a finger or the like touches the operation surface 12a and a contact load at that time based on the distortion amounts detected by the four distortion detection units 14.
  • the movement distance detection unit 102 acquires from the contact detection unit 101 the contact position when the finger or the like touches the operation surface 12a and the contact position when the finger or the like leaves, and the contact position on the operation surface 12a. The moving distance of is detected.
  • the cancellation condition determination unit 106 acquires a contact load from the contact detection unit 101, and determines whether or not the contact load satisfies a predetermined cancellation condition.
  • the touch operation detection unit 103 acquires the contact load from the contact detection unit 101
  • the touch operation detection unit 103 refers to the threshold distance storage unit 104 to acquire a threshold distance corresponding to the contact load.
  • the cancellation condition determination unit 106 acquires a determination result as to whether or not the cancellation condition is satisfied. If the cancel condition is not satisfied, the touch operation is detected in the same manner as in the first embodiment. That is, the movement distance acquired from the movement distance detection unit 102 is compared with the threshold distance, and when the movement distance is larger than the threshold distance, contact with the operation surface 12a is detected as a touch operation. On the other hand, when the movement distance is not greater than the threshold distance, the contact with the operation surface 12a is not detected as a touch operation. Further, even when the cancel condition is satisfied, the touch operation is not detected.
  • the touch operation determination unit 105 Upon receiving the detection result of the touch operation obtained by the touch operation detection unit 103, the touch operation determination unit 105 compares the movement distance detected with the touch operation with a threshold distance, so that the touch operation is performed as a tap operation. , Flick operation or swipe operation. As this threshold distance, the threshold distance stored in the threshold distance storage unit 104 can be used. In FIG. 9, a dashed arrow is displayed from the threshold distance storage unit 104 to the touch operation determination unit 105 because the touch operation determination unit 105 can read out the threshold distance from the threshold distance storage unit 104 and use it. It represents something. When the touch operation determination unit 105 determines whether the touch operation is a tap operation, a flick operation, or a swipe operation, the result is output to the outside.
  • FIG. 10 shows a flowchart of the touch operation detection process executed by the touch operation detection device 150 of the second modification of the first embodiment described above.
  • the touch operation detection process of the second modified example shown in FIG. 10 is different from the touch operation detection process of the first example described above with reference to FIG.
  • the flowchart of the touch operation detection process performed with the touch operation detection apparatus 150 of a modification is shown.
  • the flowchart of the touch operation detection process of the second modification of the first embodiment shown in FIG. 10 cancels the maximum value of the contact load with respect to the touch operation detection process of the first embodiment described above with reference to FIG.
  • the timing for determining whether or not the load is larger than the load Pc is different, and the other portions are the same. A brief description is given below.
  • the threshold distance is set to the value Lt set for detecting the tap operation (S174).
  • the contact load is not greater than the tap load Pt (S173: no)
  • the threshold distance is set to the flick operation detection value Lf (S176).
  • the threshold distance is set to the value Ls for detecting the swipe operation (S177).
  • the maximum value of the contact load (that is, the contact load monitored until the contact is released after the contact is detected). It is determined whether or not the maximum value exceeds a predetermined cancel load Pc (S180).
  • the movement distance of the contact position to the operation surface 12a is detected (S181), and the obtained movement It is determined whether the distance exceeds a preset threshold distance (S182).
  • a preset threshold distance S182
  • the touch on the operation surface 12a is detected as a touch operation, and the mode of the touch operation is determined based on the movement distance (S183). . That is, if the moving distance is larger than a predetermined threshold (for example, a threshold distance Ls for detecting a swipe operation), it is determined that the touch operation mode is a swipe operation.
  • the touch operation mode is a flick operation. Furthermore, when it is smaller than the another threshold value, it is determined that the touch operation mode is a tap operation.
  • FIG. 11A and FIG. 11B illustrate time-series data of contact loads detected from when contact with the operation surface 12a is detected until contact is released.
  • the detected contact load is small at the beginning, but suddenly increases after the contact load is further reduced at the stage before the contact is released. This is probably because an operator who noticed an erroneous touch operation pressed the operation surface 12a strongly in an attempt to cancel the touch operation.
  • the contact load increase amount ⁇ P is calculated, and when the increase amount ⁇ P exceeds a predetermined value, it is determined that the cancel condition is satisfied, and the detected touch operation is canceled. Alternatively, the touch operation may not be detected.
  • the contact load increase amount ⁇ P is calculated by subtracting the minimum value from the maximum value of the contact load.
  • the increase amount of the contact load in a predetermined unit time width may be obtained, and the maximum value of the increase amount in the unit time width may be set as the contact load increase amount ⁇ P.
  • a threshold load may be set according to the movement distance, and when the contact load is larger than the threshold load, contact with the operation surface 12a may be detected as a touch operation.
  • FIG. 12 shows a rough internal structure of the touch operation detection device 200 according to the second embodiment.
  • the touch operation detection device 200 of the second embodiment shown in the figure is compared with the touch operation detection device 100 of the first embodiment shown in FIG. 3 by the touch operation detection unit 103 comparing the contact load with the threshold load.
  • the point of detecting touch operation is very different.
  • the touch operation detection device 200 of the second embodiment is different in that it includes a threshold load storage unit 204 instead of the threshold distance storage unit 104, but the other points are the same as in the first embodiment. This is the same as the touch operation detection device 100 of FIG.
  • the touch operation detection device 200 according to the second embodiment will be briefly described with a focus on differences from the first embodiment. Moreover, about the same structure as 1st Example, detailed description is abbreviate
  • the contact detection unit 101 calculates the contact position and the contact load on the operation surface 12a based on the distortion amounts detected by the four distortion detection units 14, and the contact position is detected as a moving distance.
  • the contact load is output to the touch operation detection unit 103.
  • the movement distance detection unit 102 detects the movement distance by acquiring the contact position from the contact detection unit 101, and outputs the obtained movement distance to the touch operation detection unit 103.
  • the touch operation detection unit 103 When the touch operation detection unit 103 according to the second embodiment receives the movement distance from the movement distance detection unit 102, the touch operation detection unit 103 refers to the threshold load storage unit 204 to acquire a threshold load corresponding to the movement distance. Then, the contact load acquired from the contact detection unit 101 is compared with the threshold load, and when the contact load is larger than the threshold load, contact with the operation surface 12a is detected as a touch operation. On the other hand, when the contact load is not larger than the threshold load, the contact with the operation surface 12a is not detected as a touch operation.
  • the cancellation condition determination unit 106 acquires the contact load from the contact detection unit 101, determines whether or not the contact load satisfies a predetermined cancellation condition, and outputs the determination result to the cancellation unit 107.
  • the cancel unit 107 receives the determination result as to whether or not the cancel condition is satisfied from the cancel condition determination unit 106, and detects the touch operation detected by the touch operation detection unit 103 when the cancel condition is not satisfied. The result is output to the touch operation determination unit 105. On the other hand, when the cancellation condition is satisfied, the detection result of the touch operation detected by the touch operation detection unit 103 is canceled.
  • the touch operation determination unit 105 receives the touch operation detected by the touch operation detection unit 103, the touch operation is selected from the tap operation, the flick operation, and the swipe operation based on the movement distance detected along with the touch operation. Is determined. That is, when the movement distance of the touch operation is short, the touch operation is determined as a tap operation, when the movement distance is long, it is determined as a swipe operation, and when it is an intermediate movement distance, it is determined as a flick operation. To do. When it is determined whether the touch operation is a tap operation, a flick operation, or a swipe operation, the result is output to the outside.
  • the touch operation detection device 200 of the second embodiment also includes a threshold distance storage unit 104 as in the touch operation detection device 100 of the first embodiment shown in FIG.
  • the mode of the touch operation may be determined using the threshold distance that has been set.
  • FIG. 13 shows a flowchart of the touch operation detection process executed by the touch operation detection device 200 of the second embodiment.
  • the touch operation detection process of the second embodiment first, it is determined whether or not a contact with the operation surface 12a is detected (S201). If contact is not detected (S201: no), the same determination is repeated until contact is detected. When contact with the operation surface 12a is detected (S201: yes), a contact position and a contact load with respect to the operation surface 12a are calculated (S202).
  • the moving distance can be used by calculating the distance between the contact position when contact is detected and the contact position when contact release is detected.
  • the actual distance traveled by the contact position may be accumulated between the detection of the contact and the detection of the release of the contact.
  • FIG. 14A illustrates a state in which the threshold load is set according to the movement distance. As shown in the drawing, the threshold load is set to a smaller value as the moving distance becomes larger. Further, when the moving distance becomes a certain size or larger, the threshold load can be kept zero.
  • the contact load at this time may be the contact load when contact with the operation surface 12a is detected, or may be the maximum load of the contact load detected until the contact is released. it can.
  • a threshold distance Ls for detecting a swipe operation a threshold distance Lf for detecting a flick operation, or a threshold distance Lt for detecting a tap operation is set in advance and moved. By comparing the distance, it is determined that the operation is a swipe operation, a flick operation, or a tap operation.
  • the touch load is detected when the contact load is larger than the threshold load set according to the movement distance. For this reason, even if the detection sensitivity of the touch operation is increased, noise or the like is not erroneously detected. As a result, touch operations that lightly touch the operation surface 12a can be reliably detected without erroneous detection.
  • the contact load increase amount ⁇ P has a predetermined value as in the third modification of the first embodiment described above with reference to FIGS. 11A and 11B. When it exceeds, it may be determined that the cancellation condition is satisfied, and the detected touch operation may be canceled or the touch operation may not be detected.
  • C. Third embodiment In the first and second embodiments described above, the contact position and the contact load on the operation surface 12a are detected based on the output of the strain detector 14 attached to the holding plate 13. However, it is not always necessary to attach the strain detection unit 14 to the holding plate 13 as long as the contact position and the contact load on the operation surface 12a can be detected.
  • a third embodiment for detecting the contact position and the contact load without using the distortion detection unit 14 will be briefly described.
  • the touch operation input device 10 As described above with reference to FIGS. 4A to 4D, the touch operation input device 10 according to the first and second embodiments is applied to the load that the holding plate 13 receives from the connecting portion 12 b of the operation plate 12. And the contact position and the contact load on the operation surface 12a are detected based on the force and the couple. Therefore, as long as the load and couple received by the holding plate 13 from the connecting portion 12b can be obtained, the strain detecting unit 14 is not necessarily used.
  • the holding plate 13 may be attached to the mounting table 15 a via the load cell 24. Even in this case, the load and the couple received by the holding plate 13 from the connecting portion 12 b can be calculated from the output of the load cell 24 that supports both sides of the holding plate 13. If the load and couple received by the holding plate 13 are known, the contact position and the contact load on the operation surface 12a can be calculated by the method described above with reference to FIGS. 4C and 4D. it can.
  • a contact load cannot be detected, devices (such as a touch pad and a touch display) that can detect a contact position are widely used. Therefore, you may combine such an apparatus and a load cell.
  • a contact position detecting device 32 such as a touch pad may be mounted on the mounting table 15a via the load cell.
  • the four corners of the contact position detecting device 32 are supported.
  • the contact position detecting device 32 can be stably supported, this may be used.
  • the center may be supported.
  • the touch position on the operation surface 12 a can be detected by the touch operation input device 30, and the contact load can be detected by the load cell 34.
  • each section is expressed as S101, for example.
  • each section can be divided into a plurality of subsections, while a plurality of sections can be combined into one section.
  • each section configured in this manner can be referred to as a device, module, or means.

Abstract

La présente invention concerne un dispositif de détection d'opération tactile (100, 200) qui détecte une opération tactile consistant à toucher une surface de commande (12a) avec un doigt qui comprend : une unité de détection de contact (101) qui détecte, par rapport à un contact avec la surface de commande, une position de contact sur la surface de commande, et une charge de contact sur la surface de commande ; une unité de détection de distance de déplacement (102) qui détecte une distance de déplacement de la position de contact à partir d'un moment où le contact avec la surface de commande commence jusqu'au moment où le contact se termine ; et une unité de détection d'opération tactile (103) qui détecte le contact en tant qu'opération tactile dans les cas où la charge de contact et la distance de déplacement satisfont une relation prédéterminée.
PCT/JP2015/006338 2015-01-12 2015-12-21 Dispositif de détection d'opération tactile, dispositif d'entrée d'opération tactile et procédé de détection d'opération tactile WO2016113806A1 (fr)

Applications Claiming Priority (4)

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JP2015003759 2015-01-12
JP2015-003759 2015-01-12
JP2015-200616 2015-10-08
JP2015200616A JP2016131014A (ja) 2015-01-12 2015-10-08 タッチ操作検知装置、タッチ操作入力装置、タッチ操作検知方法

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