JP2019152944A - Operation input device - Google Patents

Abstract

To provide an operation input device capable of suppressing failure in operation when vibration or shock is exerted.SOLUTION: An operation input device is constituted by including a touch sensor 10 being an operation detection unit having an operation face 10a for detecting a state of an operation of a detection object, an acceleration sensor 20 being a shock detection unit for detecting a shock to a mounting section on which the touch sensor 10 is mounted, and a control unit 30 having a determination unit 36 which determines a reflection to the operation amount detected by the touch sensor 10 on the basis of a shock amount detected by the acceleration sensor 20. Thus the failure of the operation when vibration or shock is exerted is suppressed.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an operation input device.

  Conventionally, there has been disclosed an operation input device that automatically prohibits input from the touch panel when the device is moved in a state where the touch panel can be operated (see, for example, Patent Document 1).

  In this operation input device, in a portable electronic device provided with a touch panel stacked on a display, an acceleration sensor for detecting a movement state of the portable electronic device and a movement amount detected by the acceleration sensor are set in advance. Determining means for determining whether or not the threshold is exceeded, control means for prohibiting data input from the touch panel when the movement amount is determined to exceed the threshold, and data input from the touch panel Display means for displaying the prohibition on the display. Accordingly, when the touch panel is moved in a state where the touch panel can be operated, it is supposed that erroneous operation can be prevented by automatically prohibiting input from the touch panel.

JP 2009-87076 A

  However, the conventional technology is targeted at the time of movement of the operation input device. When the operation input device is placed in use, there is no input control when vibration, impact, etc. are applied to the operation input device. Not specified. Therefore, when the operation input device is in use, for example, when the operation input device is mounted on a vehicle, it is recognized that the operation amount is large because the finger moves unintentionally and receives a shock due to a road step or the like. There was a problem that it sometimes malfunctioned, which may cause discomfort.

  Accordingly, an object of the present invention is to provide an operation input device that can suppress malfunction of operation when vibration, impact, or the like is applied.

[1] In order to achieve the above object, an operation detection unit having a detection surface for detecting an operation state of a detection target, an impact detection unit for detecting an impact of a mounting unit on which the operation detection unit is mounted, There is provided an operation input device including a control unit including a determination unit that determines reflection of an operation amount detected by the operation detection unit based on an impact amount detected by the detection unit.
[2] The determination unit determines whether the operation amount exceeds a predetermined value detected by the operation detection unit, and whether the impact amount exceeds a predetermined value detected by the shock detection unit. The operation input device according to [1] may be configured to detect an operation state by reflecting the magnitude of the operation amount based on a combination.
[3] The determination unit is configured to prevent the operation amount from being reflected when the operation amount detected by the operation detection unit is large and the impact amount detected by the impact detection unit is large. The operation input device according to [1] or [2] may be used.
[4] The operation input device according to any one of [1] to [3], wherein the operation is a tracing operation, and the operation amount is a tracing amount in the detection surface. .
[5] The operation input device according to any one of [1] to [4], wherein the impact amount is an amount of an in-plane component of the detection surface.

  According to the operation input device of the present invention, it is possible to suppress malfunction of operation when vibration, impact, or the like is applied.

FIG. 1 is an overall configuration diagram of an operation input device according to an embodiment of the present invention. FIG. 2 is a three-dimensional perspective view of the passenger compartment showing the configuration when the operation input device according to the embodiment of the present invention is mounted on a vehicle. FIG. 3 is a flowchart showing the operation of the operation input device according to the embodiment of the present invention. FIG. 4 is a pattern diagram in which the relationship between the operation amount calculation result, the impact detection result, and the reflection of the operation is classified into four patterns and displayed in a table format.

(Embodiment of the present invention)
As shown in FIG. 1, the operation input device 1 according to the embodiment of the present invention includes a touch sensor 10 as an operation detection unit including an operation surface 10 a that detects an operation state of a detection target, and the touch sensor 10. An acceleration sensor 20 that is an impact detection unit that detects an impact of a mounting unit on which the touch sensor 10 is mounted, and a determination unit 36 that determines the reflection of the operation amount detected by the touch sensor 10 based on the impact amount detected by the acceleration sensor 20. And a control unit 30 provided.

(Touch sensor 10)
The touch sensor 10 as the operation detection unit is, for example, a capacitive two-dimensional touch sensor that can detect two-dimensional coordinates. The touch sensor 10 is mounted on a mounting portion as a base. As shown in FIG. 2, the mounting unit is, for example, a vehicle 8. As shown in FIG. 2, the touch sensor 10 is attached to, for example, the center console 82, and an operator such as a driver performs a tracing operation, a touch operation, and the like with the fingers.

  The touch sensor 10 can detect the operation position as a two-dimensional coordinate by performing a tracing operation and a touch operation on the operation surface 10a. The touch sensor 10 is an electrostatic capacity type touch sensor, and is an electrostatic capacity (mutual capacity) generated at a point where the drive electrode 11 and the detection electrode 12 that are arranged to intersect to constitute a two-dimensional touch sensor. Is read. As an example, a capacitance signal Sc is generated as a capacitance count value obtained by performing analog / digital conversion processing on the read capacitance, and is output to the control unit 30.

  The touch sensor 10 is configured so that the operation target device 15 can be remotely operated by a tracing operation. When the operation target device 15 is a display device, an input operation can be performed by displaying characters, marks, and the like. Further, when the operation target device 15 is a control device, it is configured to be able to perform operations such as volume adjustment of the audio device and temperature adjustment of the air conditioning device.

  The touch sensor 10 is, for example, the above-described capacitance-type two-dimensional touch sensor, but is not limited thereto, and may be another type such as a resistive film sensor.

(Operation target device 15)
As illustrated in FIG. 1, the operation target device 15 is a device to be operated by the touch sensor 10, and is, for example, various display devices, audio devices, air conditioning devices, or the like. As shown in FIG. 1, the operation target device 15 is controlled based on an input control signal _SD . In the present embodiment, the operation target device 15 will be described as an audio device mounted on the vehicle 8.

(Acceleration sensor 20)
The acceleration sensor 20 as an impact detection unit detects an impact amount as an acceleration as a result of impact detection of a mounting unit on which the touch sensor 10 is mounted as an acceleration. In the present embodiment, the mounting unit is the vehicle 8. As shown in FIG. 2, the acceleration sensor 20 is mounted on a part of the vehicle 8, primarily the vehicle vibration, and outputs an impact detection to the controller 30 as an acceleration signal S _G. The acceleration sensor 20 is preferably mounted near the touch sensor 10.

  The acceleration sensor 20 is an inertial sensor for the purpose of measuring acceleration. By measuring the acceleration and performing appropriate signal processing, various information such as tilt, movement, vibration and impact can be obtained. Although there are many types of acceleration sensors, a MEMS acceleration sensor to which MEMS (Micro Electro Mechanical System) technology is applied can be used. The MEMS type acceleration sensor includes a detection element unit that detects acceleration and a signal processing circuit that amplifies, adjusts, and outputs a signal from the detection element. For example, a capacitance detection type acceleration sensor detects a change in capacitance between a sensor element movable portion and a fixed portion.

  As a modification, instead of an acceleration sensor, for example, a load sensor that can detect a load applied to the touch sensor 10 based on an operation may be used. The load sensor may be any sensor that can detect an operation load due to a touch operation on the board surface. For example, a strain gauge can be used. A strain gauge has a structure in which a metal resistor (metal foil) laid out in a zigzag shape is attached to a thin insulator, and detects the amount of strain by measuring the change in electrical resistance due to deformation. It is. This strain gauge can easily detect 1 / 1,000,000 strain, and can calculate the stress of the panel surface from the detected strain amount, thereby calculating the operation load. Note that the relationship between the strain amount and the operation load is obtained in advance by calibration or the like.

  In the present embodiment, a small and inexpensive triaxial acceleration sensor (3G sensor) is mounted in the vicinity of the touch sensor 10. The triaxial acceleration sensor is a kind of MEMS sensor that can measure the acceleration in three directions of the XYZ axes with one device. It can measure even minute impacts and accelerations. Typical triaxial acceleration sensors include a piezoresistive triaxial acceleration sensor, a capacitive triaxial acceleration sensor, and a heat detection triaxial acceleration sensor.

  As shown in FIG. 2, when a triaxial acceleration sensor (3G sensor) is mounted in the vicinity of the touch sensor 10 as the acceleration sensor 20, the vertical detection direction is set to match the vertical direction of the vehicle. With this mounting posture, the vertical acceleration of the vehicle can be detected, and the acceleration in the direction orthogonal to the vertical axis, that is, the acceleration of the in-plane component of the operation surface 10a of the touch sensor 10 is detected. be able to.

  The acceleration in the normal direction with respect to the operation surface 10a of the touch sensor 10 is generated by an impact due to a road step or the like, and has a particularly large influence on the touch operation on the operation surface 10a. In addition, the impact and vibration in the in-plane direction of the operation surface 10a of the touch sensor 10 have a particularly large influence when the operation surface 10a is operated with a finger or the like.

  The result detected by the acceleration sensor 20 is an arbitrary value such as the acceleration in the normal direction of the operation surface 10a, the acceleration in the in-plane direction of the operation surface 10a, or the maximum acceleration indicating the magnitude of the acceleration in all directions. It is possible to set to the acceleration of. In particular, in order to suppress or prevent an erroneous operation with respect to the tracing operation, it is preferable to use the in-plane acceleration of the operation surface 10a as the amount of impact by the acceleration sensor 20.

(Control unit 30)
The control unit 30 is configured by, for example, a microcomputer including a touch detection unit 32, an impact detection unit 34, a determination unit 36, a storage unit 38, and the like. The control unit 30 includes a CPU (Central Processing Unit) that performs operations and processing 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. . As shown in FIG. 1, the control unit 30 does not need to be configured integrally with the touch detection unit 32, the impact detection unit 34, and the determination unit 36. For example, the touch detection unit 32 includes the touch sensor 10, the impact The detection unit 34 may be provided in the acceleration sensor 20, and the storage unit 38 may use an external memory. The storage unit 38 stores a touch threshold value for touch detection, a threshold value for determining the magnitude of the operation amount, a threshold value for determining the magnitude of the impact amount, and the like.

(Touch detection operation by the touch detection unit 32)
The touch detection unit 32 sequentially and periodically switches the connection of the detection electrode 12 while the drive signal is supplied to one drive electrode 11 constituting the touch sensor 10, and the drive electrode 11 arranged in an intersecting manner. The capacitance (mutual capacitance) generated at the point where the detection electrodes 12 intersect is read out. As an example, a capacitance signal Sc is generated as a capacitance count value obtained by performing analog / digital conversion processing on the read capacitance, and is output to the control unit 30. Thereby, the electrostatic capacitance in the two-dimensional position of the touch sensor 10 can be detected, and the contact (touch) and proximity of a finger to the touch sensor 10 can be detected. The coordinates of the center or the center of gravity of the area that is equal to or greater than the touch threshold can be used as the touch point. Further, the operation amount of the tracing operation can be detected using the touch point as a detection result in time series. The operation amount of the tracing operation can be detected as an operation amount within a predetermined time, that is, a predetermined sampling time.

(Shock detection operation by the shock detector 34)
As described above, the acceleration is detected by the acceleration sensor 20 as an impact amount in a predetermined direction acting on the touch sensor 10 or the vicinity thereof.

(Operation amount judgment operation by judgment unit 36)
The determination unit 36 determines whether the operation amount is small or large by comparing the operation amount of the tracing operation with a predetermined threshold. The predetermined threshold can be arbitrarily set. When the operation input device according to the present embodiment is mounted on a vehicle, a value optimized depending on the type of vehicle to be operated, the position on which the vehicle is mounted, and the like can be set as a threshold value. Thereby, the determination part 36 can detect the magnitude of the operation amount of the tracing operation.

(Operation for judging magnitude of impact by judgment unit 36)
The determination unit 36 determines whether the impact amount is small or large by comparing the acceleration as the impact amount with a predetermined threshold. The predetermined threshold can be arbitrarily set. When the operation input device according to the present embodiment is mounted on a vehicle, a value in the vertical direction, the in-plane direction of the operation surface 10a, or the direction of the maximum acceleration can be set as a threshold value. Thereby, the determination unit 36 can detect the magnitude of the impact amount.

(Operation of operation input device 1)
FIG. 3 is a flowchart showing the operation of the operation input device according to the embodiment of the present invention. FIG. 4 is a pattern diagram showing the relationship between the operation amount calculation result and the impact detection result and the reflection of the operation in four patterns. Hereinafter, the operation of the operation input device 1 will be described with reference to the flowchart of FIG.

(Step 1)
The control unit 30 uses the touch detection unit 32 to detect a finger contact (touch) with the touch sensor 10. In the present embodiment, the operation amount of the tracing operation is detected as the operation amount within a predetermined sampling time.

(Step 2)
The control unit 30 uses the determination unit 36 to determine whether or not the operation amount of the tracing operation has exceeded a threshold value. When the operation amount exceeds the threshold value, the operation amount is increased to Step 3 (Step 2: Yes), and when the operation amount does not exceed the threshold value, the operation amount is decreased to Step 5 (Step 2: No).

(Step 3)
The control unit 30 detects acceleration as an amount of impact by the impact detection unit 34.

(Step 4)
The control unit 30 determines whether or not the impact amount (acceleration) exceeds the threshold by the determination unit 36. If the impact amount (acceleration) exceeds the threshold value, the impact amount is increased and the process returns to Step 1 (Step 4: Yes). If the impact amount (acceleration) does not exceed the threshold value, the impact amount is decreased and the process proceeds to Step 5 (Step 4) : No).

  In Step 4, when the tracing operation is a large operation amount and the shock amount is large, the operation is not reflected, and the operation returns to Step 1 to suppress or prevent an erroneous operation.

(Step 5)
The control unit 30 executes processing for reflecting the operation amount. That is, the control unit 30 outputs the tracing operation amount as the control signal _SD to the operation target device 15 and executes the operation amount input process. Thereby, when the vehicle-mounted device is an audio device, for example, the volume adjustment amount can be increased or decreased by a predetermined memory amount, for example.

  The above operation is repeatedly executed until an execution stop interrupt signal is input to the control unit 30.

  Here, FIG. 4 is a pattern diagram in which the relationship between the operation amount calculation result, the impact detection result, and the reflection of the operation is classified into four patterns and displayed in a table format. Pattern 1 is a case where the tracing operation amount is small and there is no impact, and the operation is performed with a small operation amount. For example, in the case of an audio device, the operation amount can be increased or decreased by one memory. Pattern 2 is a case where the tracing operation amount is small and there is an impact, and the operation is performed with a small operation amount. For example, in the case of an audio device, the operation amount can be increased or decreased by one memory. Pattern 3 is a case where the amount of tracing operation is large and there is no impact, and the operation is performed with a large amount of operation. For example, in the case of an audio apparatus, the volume of operation can be increased or decreased by 2 memories.

  Pattern 4 is a case where the amount of tracing operation is large and there is an impact. It can be set as the control which does not reflect the operation amount as what the operation amount became large by the impact. That is, in the case of an audio device, volume adjustment is not performed.

(Effect of embodiment)
An operation input device 1 according to an embodiment of the present invention includes a touch sensor 10 as an operation detection unit including an operation surface 10a for detecting an operation state of a detection target, and a mounting unit on which the touch sensor 10 is mounted. An acceleration sensor 20 that is an impact detection unit that detects an impact, and a control unit 30 that includes a determination unit 36 that determines the reflection of the operation amount detected by the touch sensor 10 based on the amount of impact detected by the acceleration sensor 20; It is comprised. With such a configuration, it is possible to suppress or prevent malfunctions caused by the stroking operation when there is vibration or impact. Thereby, it is possible to reduce the influence on the user operation with respect to the driving condition and to eliminate the unpleasant feeling due to the unintended operation.

  As mentioned above, although some embodiment of this invention was described, these embodiment is only an example and does not limit the invention which concerns on a claim. Moreover, these novel embodiments 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 the combinations of features described in these embodiments are essential to the means for solving the problems of the invention. Furthermore, these embodiments 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 ... Operation input device, 8 ... Vehicle, 10 ... Touch sensor, 10a ... Operation surface, 11 ... Drive electrode, 12 ... Detection electrode, 15 ... Operation object apparatus, 20 ... Acceleration sensor, 30 ... Control part, 32 ... Touch detection parts, 34 ... impact detection unit, 36 ... determining unit, 38 ... storage unit, 82 ... center console, Sc ... capacitance signal, S D _... control signal, S G _... acceleration signal

Claims (5)

An operation detection unit having a detection surface for detecting the operation state of the detection object;
An impact detection unit for detecting an impact of a mounting unit on which the operation detection unit is mounted;
A control unit including a determination unit that determines the reflection of the operation amount detected by the operation detection unit, based on the amount of impact detected by the detection unit;
An operation input device.   The determination unit is based on a combination of the magnitude of the operation amount whether the predetermined value detected by the operation detection unit is exceeded and the magnitude of the impact amount whether the predetermined value detected by the impact detection unit is exceeded. The operation input device according to claim 1, wherein the operation state is detected by reflecting the magnitude of the operation amount.   3. The determination unit according to claim 1, wherein the operation amount is not reflected when the operation amount detected by the operation detection unit is large and the impact amount detected by the impact detection unit is large. Operation input device.   The operation input device according to any one of claims 1 to 3, wherein the operation is a tracing operation, and the operation amount is a tracing amount in the detection surface.   The operation input device according to any one of claims 1 to 4, wherein the impact amount is an amount of an in-plane component of the detection surface.

Images