JP2019016264A - Operation detection device and operation detection system - Google Patents

Abstract

To provide an operation detection device and an operation detection system capable of suppressing an operation surface from being damaged due to the contact of an operator's nail.SOLUTION: A touch pad 1 as an operation detection device comprises: an electrostatic capacitance type touch detection part 2 for detecting a conductive member 5 arranged on an artificial nail 6 mounted on a nail 90 of an operation finger 9 or the nail 90 of the operation finger 9 and an abdominal part 95 of the operation finger 9; and a control part 4 for, when determining a detection pattern 3 as a pattern of the distribution of electrostatic capacitances detected by the touch detection part 2 to be a pattern resulting from the detection of the abdominal part 95 and the conductive member 5, increasing sensitivity of the touch detection part 2 such that an operation performed to prevent the mounted artificial nail 6 or the nail 90 of the operation finger 9 from contacting the operation surface 20 of the touch detection part 2 is detected.SELECTED DRAWING: Figure 4

Description

  The present invention relates to an operation detection device and an operation detection system.

  As a conventional technique, the coating applied to the surface of the nail is a nail polish liquid having an amount of a conductive material that can impart to the nail the conductivity that allows the capacitive touch panel to operate. A material is a light-colored conductive material, and a nail polish solution for base coat or top coat is known (for example, refer to Patent Document 1).

  The operator can operate the capacitive touch panel with the toe by applying the nail polish.

Japanese Patent Laid-Open No. 2006-40325

  The operator can operate the touch panel even when the nail is long by applying the nail polish, but there is a possibility that the operation surface may be damaged by the nail.

  Accordingly, an object of the present invention is to provide an operation detection device and an operation detection system that can suppress the operator's nails from touching and damaging the operation surface.

  One embodiment of the present invention includes a false nail attached to the nail of the operation finger, a conductive member disposed on the nail of the operation finger, a capacitive touch detection unit that detects the abdomen of the operation finger, and touch detection. When it is determined that the detection pattern, which is a pattern of the distribution of capacitance detected by the unit, is a pattern due to the detection of the abdomen and the conductive member, the attached false nail or the nail of the operation finger is the touch detection unit Provided is an operation detection device comprising: a control unit that increases the sensitivity of a touch detection unit so as to detect an operation performed so as not to touch an operation surface.

  Another aspect of the present invention is a capacitive touch detection for detecting a false nail attached to the nail of the operation finger or a conductive member disposed on the nail of the operation finger and the conductive member and the abdomen of the operation finger. If the detection pattern, which is the pattern of the capacitance distribution detected by the touch detection unit and the touch detection unit, is determined to be a pattern due to the detection of the abdomen and the conductive member, or the nail of the operating finger There is provided an operation detection system comprising: a control unit that increases the sensitivity of the touch detection unit so as to detect an operation performed so as not to touch the operation surface of the touch detection unit.

  ADVANTAGE OF THE INVENTION According to this invention, it can suppress that an operator's nail | claw contacts and an operation surface is damaged.

FIG. 1A is a schematic diagram illustrating an example of a touch pad according to the first embodiment, and FIG. 1B is an example of a block diagram of the touch pad. FIG. 2A is a schematic diagram illustrating an example of the first pattern of the conductive member according to the first embodiment, and FIG. 2B illustrates the first pattern detected by the touch detection unit. FIG. 2C is a schematic view showing an example of a detection pattern, FIG. 2C is a schematic view showing an example of a second pattern of the conductive member, and FIG. 2D is a second view detected by the touch detection unit. It is the schematic which shows an example of the detection pattern of this pattern. FIG. 3A is a schematic diagram for explaining an example of a belly detection region and a nail detection region detected by the touch detection unit according to the first embodiment, and FIG. It is the schematic which shows an example of the pattern of the electrically-conductive member which concerns. FIG. 4 is a flowchart illustrating an example of the operation of the touch pad according to the first embodiment. FIG. 5A is a schematic diagram illustrating an example of an operation detection system according to the second embodiment, and FIG. 5B is an example of a block diagram of the operation detection system.

(Summary of embodiment)
The operation detection device according to the embodiment includes a false nail attached to the nail of the operation finger, a conductive member disposed on the nail of the operation finger, and a capacitive touch detection unit that detects the abdomen of the operation finger; If the detection pattern, which is a capacitance distribution pattern detected by the touch detection unit, is determined to be a pattern due to the detection of the abdomen and the conductive member, the attached false nail or the nail of the operating finger is touched. And a control unit that increases the sensitivity of the touch detection unit so as to detect an operation performed so as not to contact the operation surface of the detection unit.

  Since this operation detection device increases the sensitivity of the touch detection unit so as to detect an operation performed so that the artificial nail or the nail of the operation finger does not contact the operation surface, compared with a case where this configuration is not adopted, It can suppress that the nail | claw contacts and damages an operation surface.

[First embodiment]
(Outline of touchpad 1)
Hereinafter, the operation detection device according to the first embodiment will be described with reference to the drawings in FIGS. In FIG. 2B and FIG. 2D, as an example, the distribution of electrostatic capacitance is schematically shown, and a region where the electrostatic capacitance is large is illustrated as diagonal lines with a narrow interval. Note that, in each drawing according to the embodiment described below, the ratio between figures may be different from the actual ratio. In FIGS. 1B and 5B, the flow of main information is indicated by arrows.

  The touch pad 1 as an operation detection device is mounted on a vehicle, for example. In addition, as an example, the touch pad 1 is arranged with the operation surface 20 exposed on the floor console between the driver's seat and the passenger seat, but is not limited thereto. For example, the touch pad 1 is electromagnetically connected to an electronic device and is configured to operate the electronic device based on a detected operation. Note that the touch pad 1 may be disposed on, for example, a steering wheel, or may be disposed on a display screen of a display device and configured as a touch panel.

  For example, as shown in FIGS. 1 (a) to 2 (d), the touch pad 1 is arranged on a false nail 6 (described later) attached to the nail 90 of the operation finger 9 or the nail 90 of the operation finger 9. The capacitive touch detection unit 2 that detects the conductive member 5 and the abdomen 95 of the operating finger 9, and the detection pattern 3 that is a pattern of the distribution of capacitance detected by the touch detection unit 2 includes the abdomen 95 and the conductive member. 5 is detected, it is determined that the operation is performed so that the attached artificial nail 6 or the nail 90 of the operation finger 9 is not in contact with the operation surface 20 of the touch detection unit 2. And a control unit 4 for increasing the sensitivity of the touch detection unit 2.

  The control unit 4 has pattern information 41 related to the pattern of capacitance distribution when the abdomen 95 and the conductive member 5 are detected, and the detection pattern 3 is based on the detection pattern 3 and the pattern information 41. 95 and the conductive member 5 are detected and the pattern is determined to be determined.

  In the present embodiment, a case where the conductive member 5 is arranged on the operator's claw 90 will be described. When the artificial nail 6 is attached to the operation finger 9, the conductive member 5 of the artificial nail 6 comes into contact with the nail epithelium 94 of the operation finger 9 so that the human body and the conductive member 5 are electrically connected. The

(Configuration of touch detection unit 2)
The touch detection unit 2 includes, for example, a plurality of drive electrodes and a plurality of detection electrodes that intersect with each other while maintaining insulation below the operation surface 20. The touch detection unit 2 reads the capacitance of each combination by scanning all combinations of the plurality of drive electrodes and the plurality of detection electrodes, the control unit capacitance of one period as an electrostatic capacity information S ₁ 4 is output.

(Configuration of control unit 4)
The control unit 4 includes, for example, a CPU (Central Processing Unit) that performs operations and processes on acquired data according to a stored program, a RAM (Random Access Memory) that is a semiconductor memory, a ROM (Read Only Memory), and the like. Microcomputer. In this ROM, for example, a program for operating the control unit 4, an electrostatic threshold value 40, and pattern information 41 are stored. The RAM is used as a storage area for storing, for example, a calculation result or a changed electrostatic threshold 40 temporarily. Further, the control unit 4 has means for generating a clock signal therein, and operates based on this clock signal.

The electrostatic threshold value 40 is a reference threshold value for detecting the operation finger 9 that approaches and contacts the operation surface 20. Control unit 4 compares the capacitance and the electrostatic threshold 40 based on the capacitance information S ₁ acquired from the touch detection unit 2, if the capacitance is electrostatic threshold 40 or more, A detection point is calculated assuming that the operation finger 9 is detected.

Specifically, the control unit 4 calculates the coordinates of the detection points by a method such as a weighted average based on the capacitance that is equal to or greater than the electrostatic threshold 40, for example. The coordinates of the detection point are coordinates in the orthogonal coordinate system set on the operation surface 20. Control unit 4 outputs, for example, the electronic device connected generated by the operation information S ₂ is information of the calculated detection point.

  When the conductive member 5 is not detected, the control unit 4 calculates a detection point based on the antinode detection region 30. In addition, for example, when the conductive member 5 is detected, the control unit 4 may calculate from the anti-node detection region 30, calculate from the anti-node detection region 30 and the nail detection region 31, or correspond to the toe 92. The position to be detected may be calculated as a detection point.

  The pattern information 41 is information related to the detection pattern 3 that is a pattern of electrostatic capacitance distribution. The pattern information 41 includes, for example, information on the shape of a combination of an anti-node region 30 that is an area where the abdomen 95 of the operating finger 9 is detected and an nail detection region 31 that is an area where the conductive member 5 is detected. . When there are a plurality of patterns of the conductive member 5, the pattern information 41 includes information corresponding to the pattern.

  In addition, when the control unit 4 determines that the detection pattern 3 detected based on the pattern information 41 is the operation finger 9 provided with the conductive member 5, the control finger 9 floats as a long nail ( The sensitivity is improved by changing the reference value of the electrostatic threshold value 40 to a lower value so that it can be detected in a floating state. The electrostatic threshold 40 for detecting the operating finger 9 in a floating state is determined by, for example, experiments or simulations. The distance from the operation surface 20 to the operation finger 9, that is, the distance detected in the floating state is, for example, several centimeters.

  The touch pad 1 detects, for example, a tap operation, a double tap operation, a drag operation, a flick operation, a pinch out and a pinch in operation in a floating state.

(About conductive member 5)
The conductive member 5 is, for example, a conductive sheet, a conductive resin, or a conductive paint that is electrically connected to the operation finger 9. The conductive sheet is made of, for example, a conductive cloth affixed with a conductive adhesive, a resin film formed with a transparent electrode, a copper foil or the like affixed with a conductive filler, or a metal. Mesh. The conductive resin is, for example, a resin made of a polymer compound having conductivity, a resin mixed with a conductor such as metal or carbon black, and the like. The conductive paint is, for example, a mixture of a conductor such as metal in the paint.

  For example, as shown in FIG. 1A, the conductive member 5 is formed from the toe 92 to the nail half moon 93 and is in contact with the skin such as the nail epithelium 94 to be electrically connected to the operation finger 9. Is preferred. This is because, for example, the capacitance is not detected unless the conductive member 5 is electrically connected to the human body, and the detection of the conductive member 5 is ensured. The conductive member 5 is the same in the case of the artificial nail 6.

  FIG. 2A shows the first pattern 5 a of the conductive member 5. As an example, the first pattern 5 a is formed in a substantially ring shape along the edge of the claw 90. Accordingly, the first pattern 5a includes, for example, a belly detection region 30 having a substantially elliptical shape as the abdomen 95 is projected on the operation surface 20, as shown in FIGS. 2B and 3A, and a conductive member. 5 is detected by the touch detection unit 2 as a capacitance distribution pattern in which the nail detection region 31 having a substantially ring shape such as 5 projected onto the operation surface 20 is combined.

  FIG. 2C shows the second pattern 5 b of the conductive member 5. As an example, the second pattern 5 b is formed in a linear belt shape from the tip 92 of the nail 90 toward the nail half moon 93. Accordingly, the second pattern 5b includes, for example, a belly detection region 30 having a substantially elliptical shape as the abdomen 95 is projected on the operation surface 20, as shown in FIGS. 2D and 3A, and a conductive member. The touch detection unit 2 detects the capacitance distribution pattern as a combination of the nail detection region 31 having a substantially band shape as if the projection 5 is projected on the operation surface 20. The first pattern 5a and the second pattern 5b are similarly detected when the false nail 6 is attached.

  The pattern of the conductive member 5 is not limited to these, and various patterns can be taken such as being arranged on the entire nail plate 91 and the artificial nail 6 as long as electrical contact with the human body is obtained. A pattern like a pattern may be sufficient.

  Here, as a modification, as shown in FIG. 3B, the conductive member 5 may be formed from the front surface 90 a to the back surface 90 b of the claw 90. The conductive member 5 is easily detected by the touch detection unit 2 because the claw 90 is not interposed between the conductive member 5 and the operation surface 20 on the back surface 90b side. The conductive member 5 may be formed from the front surface to the back surface of the artificial nail 6. The conductive member 5 may be formed on the back surface as in the case of the artificial nail 6.

  In addition, the control unit 4 uses, for example, pattern information 41 including a pattern when the abdomen 95 and the conductive member 5 are detected when the operation finger 9 is in the horizontal direction or in the vertical direction. The sensitivity can be increased so that the operation can be performed in a floating state corresponding to various directions of the operation finger 9.

  An example of the operation for adjusting the sensitivity of the touchpad 1 according to the present embodiment will be described below with reference to the flowchart of FIG.

(Operation)
Control unit 4 of the touch pad 1, when the power is turned on, controls the touch detection unit 2 to generate an electrostatic capacity information S ₁ by obtaining an electrostatic capacitance (Step1).

  Next, the control unit 4 compares the acquired electrostatic capacity with the electrostatic threshold value 40 and confirms whether or not the operation finger 9 has been detected. When the operation finger 9 is detected (Step 2: Yes), the control unit 4 is a long nail based on the detected pattern 3 and the pattern information 41, that is, whether or not the conductive member 5 is detected. To check.

If the control unit 4 is a long nail (Step 3: Yes), in order to detect the operation finger 9 in a floating state, the control unit 4 lowers the electrostatic threshold 40 to increase the sensitivity (Step 4). The control unit 4 calculates the detection point and outputs operation information S ₂ (Step5), and ends the operation for adjusting the sensitivity. The control unit 4 detects the operation of the subsequent cycle in a state where the sensitivity is high. For example, after increasing the sensitivity, the control unit 4 maintains a state where the sensitivity is increased until the operation is completed, and returns to the reference sensitivity after the operation is completed.

  Here, when the operation finger 9 is not detected in Step 2 (Step 2: No), the control unit 4 proceeds to Step 1 and acquires the capacitance of the next cycle.

  In step 3, if the detected operation finger 9 is not a long nail (Step 3: No), the control unit 4 maintains the sensitivity without changing the electrostatic threshold 40 (Step 6), and proceeds to Step 5. Proceed.

(Effects of the first embodiment)
The touch pad 1 according to the present embodiment can prevent the operator's nails 90 from coming into contact with and damaging the operation surface 20. Specifically, the touch pad 1 increases the sensitivity of the touch detection unit 2 so as to detect an operation performed so that the nail 90 of the operation finger 9 does not contact the operation surface 20. In comparison, the operator's nails 90 can be prevented from coming into contact and damaging the operation surface 20. This effect is the same for the false nail 6.

  Since the touch pad 1 can be operated while being lifted from the operation surface 20 even when the nail 90 is long, the operation finger 9 is laid so that the nail 90 does not come into contact with the operation surface 20 as compared with the case where this configuration is not adopted. Therefore, the operability is improved. This effect is the same for the false nail 6.

[Second Embodiment]
The second embodiment is different from the first embodiment in that the operation detection system 8 including the conductive member 5 is used.

  Hereinafter, an operation detection system according to the second embodiment will be described with reference to FIGS. 5 (a) and 5 (b). In FIG. 5A and FIG. 5B, an operation detection system 8 including a false nail 6 is illustrated as an example. In the embodiments described below, parts having the same functions and configurations as those of the first embodiment are denoted by the same reference numerals as those of the first embodiment, and description thereof is omitted.

  For example, as shown in FIGS. 5A and 5B, the operation detection system 8 is arranged on the false nail 6 attached to the nail 90 of the operation finger 9 or the nail 90 of the operation finger 9. The conductive member 5, the capacitive touch detection unit 2 that detects the abdomen 95 of the conductive member 5 and the operating finger 9, and the detection pattern 3 that is a pattern of the distribution of capacitance detected by the touch detection unit 2 is the abdomen. 95 and an operation performed such that the nail 90 of the artificial nail 6 or the operation finger 9 is not in contact with the operation surface 20 of the touch detection unit 2 when the pattern is determined to be a pattern due to the detection of the conductive member 5. And a control unit 4 that increases the sensitivity of the touch detection unit 2 so as to detect.

  The operation detection system 8 is a system including the touch pad 1 and the conductive member 5 according to the first embodiment, for example, as shown in FIGS. 5 (a) and 5 (b).

  The false nail 6 is attached to the nail 90. When the conductive member 5 is disposed on the artificial nail 6 and is attached to the nail 90, the nail epithelium 94 and the conductive member 5 are brought into contact with each other to electrically connect the conductive member 5 and the human body. The artificial nail 6 is configured so as to be easily mounted when operated, for example.

  The operation detection system 8 increases the sensitivity of the touch detection unit 2 so as to detect an operation performed so that the artificial nail 6 or the nail 90 of the operation finger 9 does not come into contact with the operation surface 20. In comparison, the operator's nails 90 can be prevented from coming into contact and damaging the operation surface 20.

  As another embodiment, the conductive member 5 may be disposed on a plurality of operating fingers or false nails. In this case, for example, a gesture or the like can be detected by changing the pattern of the conductive member 5 for each operation finger.

  As mentioned above, although some embodiment and modification of this invention were demonstrated, these embodiment and modification are only examples, and do not limit the invention based on a claim. These novel embodiments and modifications can be implemented in various other forms, and various omissions, replacements, changes, and the like can be made without departing from the scope of the present invention. In addition, not all combinations of features described in these embodiments and modifications are necessarily essential to the means for solving the problems of the invention. Further, these embodiments and modifications are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 1 ... Touch pad, 2 ... Touch detection part, 3 ... Detection pattern, 4 ... Control part, 5 ... Conductive member, 5a ... 1st pattern, 5b ... 2nd pattern, 6 ... False nail, 8 ... Operation detection system , 9 ... operating finger, 20 ... operating surface, 30 ... belly detection area, 31 ... nail detection area, 40 ... electrostatic threshold, 41 ... pattern information, 90 ... nail, 91 ... nail plate, 90a ... surface, 90b ... back surface, 92 ... toe, 93 ... nail half moon, 94 ... nail epithelium, 95 ... abdomen

Claims (4)

A false nail attached to the nail of the operation finger, a conductive member arranged on the nail of the operation finger, and a capacitive touch detection unit that detects the abdomen of the operation finger;
When it is determined that the detection pattern, which is a capacitance distribution pattern detected by the touch detection unit, is a pattern obtained by detecting the abdomen and the conductive member, the attached artificial nail or the operation finger A control unit that increases the sensitivity of the touch detection unit so as to detect an operation performed so that the nail does not come into contact with the operation surface of the touch detection unit;
An operation detection device comprising: The control unit has pattern information regarding a pattern when the abdomen and the conductive member are detected, and the detection pattern is detected based on the detection pattern and the pattern information. It is determined that the pattern is
The operation detection apparatus according to claim 1. A false nail attached to the nail of the operation finger, or a conductive member disposed on the nail of the operation finger;
A capacitive touch detection unit that detects the abdomen of the conductive member and the operation finger;
When it is determined that the detection pattern, which is a capacitance distribution pattern detected by the touch detection unit, is a pattern obtained by detecting the abdomen and the conductive member, the attached artificial nail or the operation finger A control unit that increases the sensitivity of the touch detection unit so as to detect an operation performed so that the nail does not come into contact with the operation surface of the touch detection unit;
Operation detection system with The control unit has pattern information regarding a pattern when the abdomen and the conductive member are detected, and the detection pattern is detected based on the detection pattern and the pattern information. It is determined that the pattern is
The operation detection system according to claim 3.

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