WO2022163451A1 - ノイズレベルを判定する診断装置 - Google Patents
ノイズレベルを判定する診断装置 Download PDFInfo
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- WO2022163451A1 WO2022163451A1 PCT/JP2022/001703 JP2022001703W WO2022163451A1 WO 2022163451 A1 WO2022163451 A1 WO 2022163451A1 JP 2022001703 W JP2022001703 W JP 2022001703W WO 2022163451 A1 WO2022163451 A1 WO 2022163451A1
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- noise level
- touch panel
- diagnostic device
- signal
- signal strength
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- 238000003745 diagnosis Methods 0.000 title abstract description 4
- 238000001514 detection method Methods 0.000 claims abstract description 50
- 238000002405 diagnostic procedure Methods 0.000 claims description 12
- 238000005192 partition Methods 0.000 claims description 3
- 238000000638 solvent extraction Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 10
- 238000012986 modification Methods 0.000 description 9
- 230000004048 modification Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000015654 memory Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/34—Recording or statistical evaluation of computer activity, e.g. of down time, of input/output operation ; Recording or statistical evaluation of user activity, e.g. usability assessment
- G06F11/3466—Performance evaluation by tracing or monitoring
- G06F11/3485—Performance evaluation by tracing or monitoring for I/O devices
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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
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
-
- 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
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
Definitions
- the present invention relates to a diagnostic device and diagnostic method for diagnosing the state of noise applied to a capacitive touch panel.
- noise generated from the machine tools being processed is likely to be applied to the machine tools installed around the machine tools being processed.
- the machine tool has not acquired the noise status.
- an object of the present invention is to provide a diagnostic device and diagnostic method that can capture the state of noise.
- a first aspect of the present invention is a diagnostic device for diagnosing a capacitive touch panel, comprising: a signal strength acquisition unit that acquires a signal strength at each of a plurality of nodes that partition the touch panel; and a noise level determination unit configured to determine a noise level based on a state of the signal strength that is less than the touch detection threshold among the signal strengths.
- a second aspect of the present invention is a diagnostic method for diagnosing a capacitive touch panel, comprising: and a noise level determination step of determining a noise level based on a state of the signal strength being less than the touch detection threshold among the signal strengths.
- the state of noise can be captured.
- FIG. 1 is a block diagram showing the configuration of a touch panel device.
- FIG. 2 is a schematic diagram showing the structure of the touch panel.
- FIG. 3 is a graph showing drive pulse signals input from the drive section to the Y-axis electrodes.
- FIG. 4 is a diagram showing nodes on the touch panel.
- FIG. 5 is a block diagram showing the configuration of the diagnostic device.
- FIG. 6 is a graph showing distribution of signal strength at each node.
- FIG. 7 is a diagram showing a display example of the noise level.
- FIG. 8 is a flow chart showing the procedure of diagnostic processing.
- FIG. 1 is a block diagram showing the configuration of the touch panel device 10.
- the operator makes an input to the touch panel device 10 by touching the display unit 12 on which an image or the like is displayed with an operating body.
- the operating body is, for example, a user's finger, a stylus, or the like.
- the touch panel device 10 is connected to a numerical control device 14 that controls the machine tool.
- the touch panel device 10 is used as an input device for the numerical controller 14 .
- the touch panel device 10 has a display section 12 , a display control section 16 , a touch panel 18 , a drive section 20 , a reception section 22 , a drive control section 24 , a signal strength acquisition section 26 , an operation position identification section 28 and a storage medium 30 .
- the display unit 12 is a liquid crystal display or the like.
- the display unit 12 displays icons for inputting commands to the numerical controller 14, information indicating the machine tool status sent from the numerical controller 14, and the like.
- the display control unit 16 controls the display unit 12 according to requests from the numerical control device 14 .
- the touch panel 18 is a capacitive touch panel.
- the touch panel 18 may be a mutual capacitive touch panel or a self-capacitance touch panel among capacitive touch panels.
- the touch panel 18 is a mutual capacitive touch panel among capacitive touch panels.
- the touch panel 18 is formed in the shape of a transparent film and provided on the screen of the display section 12 .
- a driving unit 20 and a receiving unit 22 are connected to the touch panel 18 .
- FIG. 2 is a schematic diagram showing the structure of the touch panel 18.
- the touch panel 18 has X-axis electrodes Ex[1] to Ex[m] and Y-axis electrodes Ey[1] to Ey[n].
- the X-axis electrodes Ex[1] to Ex[m] are provided in m rows in the X-axis direction and arranged to extend in the Y-axis direction.
- the Y-axis electrodes Ey[1] to Ey[n] are provided in n rows in the Y-axis direction and arranged to extend in the X-axis direction.
- a drive unit 20 is connected to the Y-axis electrodes Ey[1] to Ey[n].
- the drive unit 20 transmits a drive pulse signal to each of the Y-axis electrodes Ey[1] to Ey[n].
- the Y-axis electrodes Ey[1] to Ey[n] may be referred to as the Y-axis electrode Ey.
- a receiver 22 is connected to the X-axis electrodes Ex[1] to Ex[m].
- the receiving unit 22 receives a current signal from each of the X-axis electrodes Ex[1] to Ex[m].
- the X-axis electrodes Ex[1] to Ex[m] may be referred to as the X-axis electrode Ex.
- the drive control unit 24 (FIG. 1) controls the drive unit 20 to sequentially transmit a drive pulse signal with a set frequency from the Y-axis electrode Ey[1] to the Y-axis electrode Ey[n].
- FIG. 3 is a graph showing drive pulse signals input from the drive section 20 to the Y-axis electrodes Ey.
- the drive control unit 24 controls the drive unit 20 to sequentially transmit 120 pulses of the drive pulse signal of the set frequency to each of the Y-axis electrodes Ey.
- the drive unit 20 periodically transmits a drive pulse signal to each of the Y-axis electrodes Ey[1] to Ey[n], with one drive pulse signal having 120 pulses. Note that the number of pulses of the drive pulse signal need not be limited to 120 pulses.
- the signal intensity acquisition unit 26 acquires the signal intensity at each of the nodes N[1, 1] to N[m, n] on the touch panel 18 from the current signal received by the reception unit 22 from each of the X-axis electrodes Ex. .
- nodes N[1, 1] to N[m, n] may be referred to as node N when not distinguished.
- the current flowing through the X-axis electrode Ex is smaller when the touch panel 18 is operated than when the touch panel 18 is not operated.
- the amplitude of the voltage signal obtained by converting the current signal of the X-axis electrode Ex received by the receiving unit 22 becomes smaller than the voltage V0.
- the signal intensity acquisition unit 26 acquires the detection signal of each X-axis electrode Ex using the voltage V0 as a reference voltage.
- the detection signal is a signal corresponding to the difference (
- FIG. 4 is a diagram showing nodes N[1, 1] to N[m, n] on the touch panel 18.
- Each node N corresponds to one partition on the touch panel 18 in a grid pattern.
- Each node N is associated with a set of Y-axis electrode Ey and X-axis electrode Ex. Although lines indicating the boundaries of the nodes N are shown in FIG. 4 , the lines indicating the boundaries of the nodes N are not visible on the actual touch panel 18 .
- the signal intensity acquisition unit 26 obtains one node N corresponding to the combination of the column of the Y-axis electrodes Ey to which the driving unit 20 has transmitted the drive pulse signal and the column of the X-axis electrodes Ex to which the receiving unit 22 has received the current signal. identify.
- the signal intensity acquisition unit 26 acquires the intensity of the detection signal of the X-axis electrode Ex forming the specified node N as the signal intensity at the specified node N.
- FIG. For example, when the drive unit 20 transmits a drive pulse signal to the Y-axis electrode Ey[3] and the reception unit 22 receives the current signal of the X-axis electrode Ex[4], the signal strength acquisition unit 26 receives the node Identify N[4,3]. In this case, the signal intensity acquisition unit 26 acquires the intensity of the detection signal of the X-axis electrode Ex[4] configuring the node N[4,3] as the signal intensity at the node N[4,3].
- the operation position specifying unit 28 specifies the operation position based on the signal intensity at each node N acquired by the signal intensity acquiring unit 26 .
- a method for specifying the operation position by the operation position specifying unit 28 can be arbitrarily selected from known methods. Therefore, the description here is omitted.
- the display control unit 16, the drive control unit 24, the signal strength acquisition unit 26, and the operation position specifying unit 28 are realized by causing the processor of the touch panel device 10 to execute a program stored in the storage medium 30. may be
- FIG. 5 is a block diagram showing the configuration of the diagnostic device 50.
- the diagnostic device 50 has a processor 52 such as a CPU or MPU, and a storage medium 54 including various memories such as a ROM, a RAM, and a hard disk. Diagnostic device 50 causes processor 52 to execute a diagnostic program stored in storage medium 54 . When the diagnostic program is executed, processor 52 operates as signal strength acquisition section 56 , noise level determination section 58 and noise level notification section 60 . At least one of the signal strength acquisition unit 56, the noise level determination unit 58, and the noise level notification unit 60 may be implemented by an integrated circuit such as ASIC or FPGA. At least one of the signal strength acquisition section 56, the noise level determination section 58, and the noise level notification section 60 may be configured by an electronic circuit including a discrete device.
- the signal strength acquisition unit 56 acquires the signal strength at each of the multiple nodes N.
- the signal strength acquisition section 56 may receive the signal strength at each node N acquired by the signal strength acquisition section 26 of the touch panel device 10 from the signal strength acquisition section 26 . Further, like the signal strength acquisition section 26, the signal strength acquisition section 56 may acquire the signal strength at each node N from the current signal received by the reception section 22 from each of the X-axis electrodes Ex.
- the noise level determination unit 58 determines the noise level based on the signal strength at each node N acquired by the signal strength acquisition unit 56 .
- 6 is a graph showing the distribution of signal strength at each node N.
- FIG. FIG. 6 illustrates a case where noise occurs during a touch operation.
- the signal strength less than the touch detection threshold TH affects the noise applied to the touch panel 18 regardless of the presence or absence of the touch operation.
- the signal strength SS which is less than the touch detection threshold TH and closest to the touch detection threshold TH, can be one of the highly reliable parameters as an index for estimating the degree of noise.
- the noise level determination section 58 determines the noise level based on the magnitude of this signal strength SS.
- the noise level determination unit 58 obtains the ratio of the magnitude of the signal strength SS to the touch detection threshold TH. When the obtained ratio is less than 20%, the noise level determination unit 58 determines the noise level as one stage (low stage). On the other hand, when the obtained ratio is 20% or more and less than 50%, the noise level determination unit 58 determines the noise level as two levels (middle level). On the other hand, when the calculated ratio is 50% or more and less than 80%, the noise level determination unit 58 determines the noise level as 3 levels (high level). Note that the number of noise level steps may be other than three, and the range of ratios assigned to the steps may be other than the above range.
- the noise level determination unit 58 determines the noise level based on the ratio of the magnitude of the signal strength SS to the touch detection threshold TH. Therefore, the noise level determination unit 58 can determine a noise level that approximates noise actually applied to the touch panel 18 . Moreover, the noise level can be obtained more accurately than when the noise level is determined based on the magnitude of the signal strength SS itself.
- the noise level notification unit 60 notifies the noise level determined by the noise level determination unit 58.
- the noise level notification unit 60 uses at least one of the speaker, light emitting unit and display unit 12 to notify the noise level. As a result, it is possible to make the operator who operates the touch panel 18 understand the state of the noise, and to present an index of occurrence of erroneous detection of the touch operation due to the noise.
- the noise level notification unit 60 notifies the noise level determined by the noise level determination unit 58 by controlling the speaker control unit connected to the speaker. For example, the noise level notification unit 60 may output a buzzer with a volume corresponding to the noise level from the speaker, or may output the noise level from the speaker.
- the noise level notification unit 60 When using a light emitting unit, the noise level notification unit 60 notifies the noise level determined by the noise level determination unit 58 by controlling the light emission control unit connected to the light emitting unit. For example, the noise level notification unit 60 may cause the light emitting unit to emit light with brightness or color according to the noise level, or may blink the light emitting unit at the number of blinks per unit time according to the noise level.
- the noise level notification unit 60 notifies the noise level determined by the noise level determination unit 58 by controlling the display control unit 16 connected to the display unit 12 .
- FIG. 7 is a diagram showing a display example of the noise level.
- the noise level notification unit 60 causes the display unit 12 to display the diagnostic screen IM.
- the noise level notification unit 60 displays level bars LB having different heights according to noise levels in the noise level display field F1 on the diagnostic screen IM.
- the noise level notification unit 60 may display the signal strengths at the multiple nodes N acquired by the signal strength acquisition unit 56 in chronological order. For example, the noise level notification unit 60 displays a graph in the display field F2 within the diagnostic screen IM for displaying the time change of noise. In the graph, for example, the vertical axis indicates signal strength and the horizontal axis indicates time. Further, the noise level notification unit 60 calculates the average of the signal strengths of the plurality of nodes N each time the signal strength obtaining unit 56 periodically obtains the signal strengths of the plurality of nodes N, and displays the calculated average. The waveform WF is displayed in the display field F2 by plotting it on the graph in the field F2.
- the noise level notification unit 60 displays the average signal strength of the plurality of nodes N acquired by the signal strength acquisition unit 56 in chronological order.
- the operator who operates the touch panel 18 can grasp the trend such as the time period in which a lot of noise is likely to occur.
- the noise level notification unit 60 may display a message regarding the noise level determined by the noise level determination unit 58.
- the noise level notification unit 60 displays the determination result of the noise level determination unit 58 or characters indicating a warning according to the determination result of the noise level determination unit 58 in the display field F3 in the diagnostic screen IM.
- FIG. 8 is a flow chart showing the procedure of diagnostic processing.
- step S1 the signal strength acquisition unit 56 acquires the signal strength at each of the plurality of nodes N. After obtaining the signal strength at each of the plurality of nodes N, the diagnosis process proceeds to step S2.
- step S2 the noise level determination unit 58 detects the signal strength SS that is less than the touch detection threshold TH and closest to the touch detection threshold TH among the signal strengths acquired in step S1. Further, the noise level determination unit 58 obtains the ratio of the magnitude of the signal strength SS to the touch detection threshold TH, and determines the noise level based on the obtained ratio. Once the noise level has been determined, the diagnostic process proceeds to step S3.
- step S3 the noise level notification unit 60 notifies the noise level determined by the noise level determination unit 58.
- the diagnosis process ends.
- the diagnostic device 50 and the diagnostic method of the present embodiment among the signal intensities at each of the plurality of nodes N partitioning the touch panel 18, based on the state of the signal intensity less than the touch detection threshold TH, the noise level judge.
- a signal intensity less than the touch detection threshold TH reflects noise applied to the touch panel 18 regardless of whether there is a touch operation (see FIG. 6). Therefore, the state of noise can be grasped by determining the noise level based on the state of the signal intensity below the touch detection threshold TH.
- the signal strength SS closest to the touch detection threshold TH can be one of the highly reliable parameters as an index for estimating the degree of noise.
- the diagnostic device 50 and diagnostic method of the present embodiment determine the noise level based on the ratio of the magnitude of the signal strength SS to the touch detection threshold TH. Thereby, a noise level approximating the noise actually applied to the touch panel 18 can be determined.
- the diagnostic device 50 and diagnostic method of the present embodiment notify the determined noise level. This allows the operator who operates the touch panel 18 to grasp the state of noise. In addition, it is possible to present an index of erroneous detection of a touch operation due to noise.
- the noise level determination unit 58 may set at least one of a ratio reference value, the number of noise level steps, and a ratio range to be assigned to the step in accordance with an operator's operation.
- the noise level determination scale can be changed according to the environment in which the touch panel 18 is arranged.
- the ratio reference value is the touch detection threshold TH in the embodiment.
- the operation device for the operator includes a touch panel 18, an operation panel provided in the machine tool, and the like.
- the noise level determination section 58 may determine the noise level based on the magnitude of the signal strength SS itself. Even in this way, similarly to the embodiment, it is possible to determine a noise level that approximates the noise that is actually applied to the touch panel 18 .
- the noise level determination unit 58 may determine the noise level based on the number of signal strengths SSN.
- the noise level determination unit 58 may determine the noise level based on the number of signal strengths SSN itself. In this case, a noise level approximating the noise actually applied to the touch panel 18 can be determined. Further, the noise level determination unit 58 may determine the noise level based on the ratio of the number of signal strengths SSN to the reference value. In this case, the noise level can be determined without being affected by the size of the touch panel 18 or the like. Therefore, the noise level of the noise actually applied to the touch panel 18 can be determined as compared with the case where the noise level is determined by the number of signal strengths SSN itself.
- the noise level determination unit 58 may set the reference value according to the operator's operation.
- the noise level determination scale can be changed according to the environment in which the touch panel 18 is arranged.
- the operation device for the operator includes a touch panel 18, an operation panel provided in the machine tool, and the like.
- the noise level determination unit 58 may determine the noise level based on both the signal strength SS and the number of signal strengths SSN. For example, the noise level determination unit 58 multiplies the ratio of the magnitude of the signal strength SS to the reference value by a coefficient corresponding to the number of signal strengths SSN, and based on the multiplication result, determines the noise level, for example, as in the embodiment. It can be determined in three stages.
- the noise level notification unit 60 may display the intensity distribution of the signal intensities of the plurality of nodes N acquired by the signal intensity acquisition unit 56 (see FIG. 6) in chronological order. Even in this way, it is possible to grasp the tendency of the time period in which a lot of noise is likely to occur.
- the noise level notification unit 60 may display the average of the signal strengths of the multiple nodes N in time series and the intensity distribution of the signal strengths of the multiple nodes N in time series.
- the noise level notification unit 60 may not be provided. Even if the noise level notification section 60 is not provided, the noise state can be grasped by the signal strength acquisition section 56 and the noise level determination section 58 .
- the diagnostic device 50 may be provided in a general-purpose personal computer connected to the touch panel device 10 or may be provided in the touch panel device 10 .
- a first invention is a diagnostic device (50) for diagnosing a capacitive touch panel (18), comprising a signal strength acquisition unit ( 56), and a noise level determination unit (58) that determines the noise level based on the state of the signal strength below the touch detection threshold value (TH) among the acquired signal strengths. It is difficult to determine whether the signal intensity above the touch detection threshold is due to the touch operation or noise, while the signal intensity below the touch detection threshold is applied to the touch panel regardless of whether there is a touch operation. appear to affect the noise that Therefore, by determining the noise level based on the signal intensity below the threshold for touch detection, it is possible to grasp the state of the noise.
- TH touch detection threshold value
- the noise level determination unit may determine the noise level based on the magnitude of the signal strength (SS) that is less than the touch detection threshold and closest to the touch detection threshold. Thereby, it is possible to determine a noise level that approximates the noise that is actually applied to the touch panel.
- SS signal strength
- the noise level determination unit may determine the noise level based on the ratio of the magnitude of the signal intensity to the reference value. Thereby, the noise level can be determined without being affected by the size of the touch panel or the like. Therefore, it is possible to determine a noise level that is closer to the noise actually applied to the touch panel than when determining the noise level based on the magnitude of the signal intensity itself.
- the noise level determination unit may set at least one of the reference value, the number of noise level steps, and the range of signal strength to be assigned to each noise level step, according to the operator's operation. This makes it possible to change the noise level determination scale according to the environment in which the touch panel is arranged.
- the reference value may be a touch detection threshold. This makes it easier to distinguish between touch operations and noise.
- the noise level determination unit may determine the noise level based on the number of signal intensities equal to or greater than a threshold (STH) that is less than the touch detection threshold and smaller than the touch detection threshold. Thereby, it is possible to determine a noise level that approximates the noise that is actually applied to the touch panel.
- STH threshold
- the diagnostic device may include a noise level notification unit (60) that notifies the noise level.
- a noise level notification unit 60
- the operator who operates the touch panel can be made aware of the state of the noise, and an index of erroneous detection of the touch operation due to the noise can be presented.
- the noise level notification unit may display the acquired signal strengths at the multiple nodes in chronological order along with the noise level. As a result, the operator who operates the touch panel can be made aware of trends such as time zones in which noise is likely to occur.
- the noise level notification unit may display the noise level on the screen of the display unit (12) provided with a touch panel. Thereby, the operator who operates the touch panel can grasp the noise level while performing the touch operation.
- a second invention is a diagnostic method for diagnosing a capacitive touch panel.
- the diagnostic method comprises a signal strength obtaining step (S1) of obtaining a signal strength at each of a plurality of nodes partitioning the touch panel; , and a noise level determination step (S2) for determining the noise level. It is difficult to determine whether the signal intensity above the touch detection threshold is due to the touch operation or noise, while the signal intensity below the touch detection threshold is applied to the touch panel regardless of whether there is a touch operation. appear to affect the noise that Therefore, by determining the noise level based on the signal intensity below the threshold for touch detection, it is possible to grasp the state of the noise.
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Abstract
Description
図1は、タッチパネル装置10の構成を示すブロック図である。オペレータは、画像等が表示された表示部12上を操作体で触れることで、タッチパネル装置10への入力を行う。操作体は、例えば、ユーザの指、スタイラス等である。タッチパネル装置10には、工作機械を制御する数値制御装置14が接続される。タッチパネル装置10は、数値制御装置14の入力装置として用いられる。
タッチパネル18が操作されていない状態では、タッチパネル18に操作体が接触していない。この場合、Y軸電極EyとX軸電極Exとの間に、駆動パルス信号に応じて電流が流れる。このとき、受信部22が受信したX軸電極Exの電流信号を変換した電圧信号の振幅は電圧V0となる。タッチパネル18が操作されている状態では、タッチパネル18に操作体が接触している。この場合、Y軸電極Eyと操作体との間にも駆動パルス信号に応じて電流が流れる。そのため、X軸電極Exに流れる電流は、タッチパネル18が操作されている状態では、タッチパネル18が操作されていない状態よりも小さくなる。このとき、受信部22が受信したX軸電極Exの電流信号を変換した電圧信号の振幅は電圧V0よりも小さくなる。信号強度取得部26は、電圧V0を基準電圧とし、各X軸電極Exの検出信号を取得する。検出信号は、具体的には、受信部22が受信した各X軸電極Exの電流を変換した電圧Vと、電圧(基準電圧)V0との差分(|V0-V|)に応じた信号である。
上記の実施形態は、下記のように変形してもよい。
ノイズレベル判定部58は、オペレータの操作に応じて、比率の基準値、ノイズレベルの段階数、および、当該段階に割り当てる比率範囲との少なくとも1つを設定してもよい。このようにした場合、タッチパネル18が配置される環境等に応じて、ノイズレベルの判定の尺度を変更することができる。なお、比率の基準値は、実施形態では、タッチ検出用閾値THである。また、オペレータによる操作装置としては、タッチパネル18、工作機械に設けられる操作盤等が挙げられる。
ノイズレベル判定部58は、信号強度SSの大きさそのものに基づいてノイズレベルを判定してもよい。このようにしても、実施形態と同様に、タッチパネル18に対して実際に印加されるノイズに近似するノイズレベルを判定することができる。
タッチ検出用閾値TH未満、かつ、タッチ検出用閾値THよりも小さい閾値STH(図6参照)以上の信号強度SSN(図6参照)の数は、ノイズを推し量る指標として信頼性が高いパラメータの1つになり得る。したがって、ノイズレベル判定部58は、信号強度SSNの数に基づいてノイズレベルを判定してもよい。
ノイズレベル通知部60は、信号強度取得部56で取得された複数のノードNの信号強度の強度分布(図6参照)を時系列で表示させてもよい。このようにしても、ノイズが多く発生し易い時間帯等の傾向を把握させることができる。
ノイズレベル通知部60は、備えられなくてもよい。ノイズレベル通知部60が備えられなくても、信号強度取得部56およびノイズレベル判定部58によりノイズの状態を捉えることができる。
診断装置50は、タッチパネル装置10に接続される汎用のパーソナルコンピュータに備えられてもよく、タッチパネル装置10に備えられてもよい。
上記の実施形態および変形例1~6は、矛盾の生じない範囲で任意に組み合わされてもよい。
以下に、上記の実施形態および変形例1~7から把握し得る発明として、第1の発明および第2の発明を記載する。
第1の発明は、静電容量式のタッチパネル(18)を診断する診断装置(50)であって、タッチパネルを区画する複数のノード(N)の各々における信号強度を取得する信号強度取得部(56)と、取得された各信号強度のうち、タッチ検出用閾値(TH)未満の信号強度の状態に基づいて、ノイズレベルを判定するノイズレベル判定部(58)と、を備える。タッチ検出用閾値以上の信号強度は、タッチ操作に起因するものかノイズに起因するものか捉え難いのに対し、タッチ検出用閾値未満の信号強度は、タッチ操作の有無にかかわらず、タッチパネルに印加するノイズに影響して現れる。したがって、タッチ検出用閾値未満の信号強度に基づいてノイズレベルを判定することで、ノイズの状態を捉えることができる。
第2の発明は、静電容量式のタッチパネルを診断する診断方法である。診断方法は、タッチパネルを区画する複数のノードの各々における信号強度を取得する信号強度取得ステップ(S1)と、取得された各信号強度のうち、タッチ検出用閾値未満の信号強度の状態に基づいて、ノイズレベルを判定するノイズレベル判定ステップ(S2)と、を含む。タッチ検出用閾値以上の信号強度は、タッチ操作に起因するものかノイズに起因するものか捉え難いのに対し、タッチ検出用閾値未満の信号強度は、タッチ操作の有無にかかわらず、タッチパネルに印加するノイズに影響して現れる。したがって、タッチ検出用閾値未満の信号強度に基づいてノイズレベルを判定することで、ノイズの状態を捉えることができる。
Claims (10)
- 静電容量式のタッチパネル(18)を診断する診断装置(50)であって、
前記タッチパネルを区画する複数のノード(N)の各々における信号強度を取得する信号強度取得部(56)と、
取得された各前記信号強度のうち、タッチ検出用閾値(TH)未満の前記信号強度の状態に基づいて、ノイズレベルを判定するノイズレベル判定部(58)と、
を備える診断装置。 - 請求項1に記載の診断装置であって、
前記ノイズレベル判定部は、前記タッチ検出用閾値未満であり、かつ、前記タッチ検出用閾値に最も近い前記信号強度(SS)の大きさに基づいて前記ノイズレベルを判定する、診断装置。 - 請求項2に記載の診断装置であって、
前記ノイズレベル判定部は、基準値に対する前記信号強度の大きさの比率に基づいて前記ノイズレベルを判定する、診断装置。 - 請求項3に記載の診断装置であって、
前記ノイズレベル判定部は、オペレータの操作に応じて、前記基準値、前記ノイズレベルの段階数、および、前記ノイズレベルの各段階に割り当てる前記信号強度の範囲の少なくとも1つを設定する、診断装置。 - 請求項3に記載の診断装置であって、
前記基準値は、前記タッチ検出用閾値である、診断装置。 - 請求項1~5のいずれか1項に記載の診断装置であって、
前記ノイズレベル判定部は、前記タッチ検出用閾値未満であり、かつ、前記タッチ検出用閾値よりも小さい閾値(STH)以上の前記信号強度の数に基づいて前記ノイズレベルを判定する、診断装置。 - 請求項1~6のいずれか1項に記載の診断装置であって、
前記ノイズレベルを通知するノイズレベル通知部(60)を備える、診断装置。 - 請求項7に記載の診断装置であって、
前記ノイズレベル通知部は、前記ノイズレベルとともに、取得された複数の前記ノードにおける前記信号強度を時系列で表示させる、診断装置。 - 請求項7または8に記載の診断装置であって、
前記ノイズレベル通知部は、前記タッチパネルが設けられる表示部(12)の画面に前記ノイズレベルを表示させる、診断装置。 - 静電容量式のタッチパネルを診断する診断方法であって、
前記タッチパネルを区画する複数のノードの各々における信号強度を取得する信号強度取得ステップ(S1)と、
取得された各前記信号強度のうち、タッチ検出用閾値未満の前記信号強度の状態に基づいて、ノイズレベルを判定するノイズレベル判定ステップ(S2)と、
を含む診断方法。
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CN202280011328.6A CN116868155A (zh) | 2021-02-01 | 2022-01-19 | 判定噪声电平的诊断装置 |
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JP2013114326A (ja) * | 2011-11-25 | 2013-06-10 | Kyocera Display Corp | タッチパネル装置 |
JP2017021518A (ja) * | 2015-07-09 | 2017-01-26 | アルプス電気株式会社 | 入力装置とその制御方法及びプログラム |
JP2019071020A (ja) * | 2017-10-11 | 2019-05-09 | ファナック株式会社 | 表示装置、管理装置、管理システム及び制御プログラム |
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JP2013114326A (ja) * | 2011-11-25 | 2013-06-10 | Kyocera Display Corp | タッチパネル装置 |
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JP2019071020A (ja) * | 2017-10-11 | 2019-05-09 | ファナック株式会社 | 表示装置、管理装置、管理システム及び制御プログラム |
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