JP2007027034A - Electrostatic capacity type touch switch - Google Patents

Electrostatic capacity type touch switch Download PDF

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JP2007027034A
JP2007027034A JP2005211204A JP2005211204A JP2007027034A JP 2007027034 A JP2007027034 A JP 2007027034A JP 2005211204 A JP2005211204 A JP 2005211204A JP 2005211204 A JP2005211204 A JP 2005211204A JP 2007027034 A JP2007027034 A JP 2007027034A
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detection
sensitivity
touch switch
capacitive touch
circuit
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Tadao Kozu
忠夫 神頭
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Calsonic Kansei Corp
カルソニックカンセイ株式会社
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    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03KPULSE TECHNIQUE
    • H03K2217/00Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
    • H03K2217/94Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
    • H03K2217/9401Calibration techniques
    • H03K2217/94026Automatic threshold calibration; e.g. threshold automatically adapts to ambient conditions or follows variation of input

Abstract

PROBLEM TO BE SOLVED: To provide an electrostatic capacity type touch switch which can detect a touching surely in case that a finger with a thick glove touches or in case that a finger without a glove touches.
SOLUTION: The electrostatic capacity type touch switch has a detection circuit 51 which detects electrostatic capacity change, a sensitivity setting circuit 52 which sets sensitivity of the detection circuit 51 or changes the sensitivity, and a detection determining circuit 54 which determines a detection of operation input. The sensitivity setting circuit 52 shifts detection sensitivity from high to low, and it shifts the detection sensitivity from low to high if the detection circuit 51 cannot confirm the detection when the detection sensitivity has been shifted from high to low. The detection determining circuit 54 determines the detection if again detected state of the detection circuit 51 continues when the detection sensitivity has been shifted from low to high.
COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、操作者が操作入力のために接触したことを静電容量の変化で検出してスイッチ入力となる静電容量式タッチスイッチの技術分野に属する。 The present invention belongs to the operator operating the art of capacitive touch switches as the switch input is detected by the change in capacitance that has been in contact for input.

従来では、発振回路に検出電極を接続し、物体の近接によって発振条件が変化するように構成し、発振回路へ供給する電圧を調整することで感度調整を行っている(例えば、特許文献1参照。)。 Conventionally, to connect the detection electrodes to the oscillator circuit, configured such that the oscillation condition by proximity of an object is changed, is performed sensitivity adjustment by adjusting the voltage supplied to the oscillation circuit (for example, see Patent Document 1 .).
特開平11−40021号公報(第2−4頁、全図) JP-11-40021 discloses (2-4 pages, all the drawings)

しかしながら、従来にあっては、感度の設定は、出荷前の段階で行われ、以後変更することがないため、例えば、冬季に厚手の手袋をしたままタッチしても検出ができないという問題が生じる。 However, in the conventional setting of the sensitivity is carried out in the pre-shipment, because there be further changes, for example, a problem that can not be detected occurs even by touching while the thick gloves in winter . また、単に検出感度を挙げることによって、これに対応しようとすると、手袋なしの指が触れる前に検出してしまう誤検出となってしまうという問題が生じる。 Also, by simply mention the detection sensitivity, when you try Correspondingly, a problem that a detection error would be detected before touching is gloves finger occurs.

本発明は、上記問題点に着目してなされたもので、その目的とするところは、厚手の手袋をしていても、手袋なしの指であっても、確実に検出することができる静電容量式タッチスイッチを提供することにある。 The present invention has been made in view of the above problems, and an object, even if the thick gloves, even without gloves finger, electrostatic which can reliably detect and to provide a capacitive touch switch.

上記目的を達成するため、本発明では、静電容量の変化で操作入力を検出する静電容量式タッチスイッチにおいて、検出感度を高感度から低感度へ変化させながら操作入力を検出する、ことを特徴とする。 To achieve the above object, the present invention, the capacitive touch switch for detecting the operation input by the change in capacitance, detecting an operation input while changing the detection sensitivity from high sensitivity to the low sensitivity, that and features.

よって、本発明にあっては、厚手の手袋をしていても、手袋なしの指であっても、確実に検出することができる。 Therefore, in the present invention, even if the thick gloves, even without gloves fingers, can be reliably detected.

以下、本発明の静電容量式タッチスイッチを実現する実施の形態を、実施例1に基づいて説明する。 Hereinafter, the embodiments for implementing the capacitive touch switch according to the present invention will be described with reference to the first embodiment.

まず、構成を説明する。 First, a description will be given of the configuration.
図1は実施例1の静電容量式タッチスイッチの概略構成を示す図である。 Figure 1 is a diagram showing a schematic configuration of a capacitive touch switch according to the embodiment 1. 図1における主要符号を説明する。 The main code is described in Figure 1.

実施例1の静電容量式タッチスイッチ1は、パネル2、検出電極3、電極用基板4、基板回路5(図1には図示せず)で構成される。 Capacitive touch switch 1 of the first embodiment, the panel 2, the detection electrode 3, the electrode substrate 4, and a substrate circuit 5 (not shown in Figure 1).
パネル2は、操作者によりタッチされる部分であり、色分けや文字印刷等により、その部分がタッチ操作される部分であることが見分けられるようになっている。 Panel 2 is a portion to be touched by the operator, by color or character printing, has become possible as is recognizable portion thereof is a portion which is touched. 材質例として樹脂を挙げておく。 Previously mentioned resin as the material examples.
検出電極3は、操作者の指が近づくことにより静電容量を変化させるための電極である。 Detection electrodes 3 are electrodes for changing the capacitance by the approaching finger of the operator.
電極用基板4は、検出電極3が固定され、かつ検出電極3に対する電気的接続を容易にする。 Electrode substrate 4, the detection electrode 3 is fixed, and to facilitate electrical connection to the detection electrode 3.

基板回路5は、検出電極3による静電容量の変化を処理して、検出結果を出力する。 Substrate circuit 5 processes the change in capacitance caused by the detection electrode 3, and outputs a detection result. 図2は、静電容量式タッチスイッチ1の基板回路5のブロック図である。 Figure 2 is a block diagram of a substrate circuit 5 of the capacitive touch switch 1.
基板回路5は、検出回路51、感度設定回路52、温度センサ53、検出判定回路54を主な構成にしている。 Substrate circuit 5, the detection circuit 51, the sensitivity setting circuit 52, the temperature sensor 53, the detection determination circuit 54 in the main configuration.
検出回路51は、検出電極3による静電容量の変化に対して、その変化を設定された感度で検出した結果が閾値を超えるかどうかによって、検知(ON状態)、非検知(OFF状態)の比較出力を行う。 Detection circuit 51, to the change in capacitance caused by the detection electrode 3, depending on whether a result of detection by the sensitivity set the change exceeds the threshold, the detection (ON state), non-detection of the (OFF state) the comparison output is carried out.

感度設定回路52は、検出判定回路54からの情報と設定された手順に従って、検出回路51が静電容量の変化を検出する感度の変更を行う。 Sensitivity setting circuit 52, in accordance with information set procedure from detection determination circuit 54, to change the sensitivity detecting circuit 51 detects a change in capacitance.
温度センサ53は、検出エリアに近い部分の温度、もしくは、静電容量式タッチスイッチ1の環境温度を検出する。 Temperature sensor 53, the temperature of the portion near the detection area, or to detect the environmental temperature of the capacitive touch switch 1.
検出判定回路54は、内部又は外部にタイマを有し、検知出力、温度情報、時間情報、設定された感度変更手順の情報から、最終的な検出判定を行い、検出結果を外部に出力する。 Detection determination circuit 54 has a timer inside or outside, the detection output, temperature information, time information, from the information of the set sensitivity change procedure performs a final detection decision, and outputs the detection result to the outside.

作用を説明する。 A description will be given of the operation.
[検出処理] [Detection processing]
図3に示すのは、静電容量式タッチスイッチ1の基板回路5で実行される操作入力検出処理の流れを示すフローチャート図で、以下、各ステップについて説明する。 Figure 3 shows a flow chart showing the flow of operation input detection processing executed in the substrate circuit 5 of the capacitive touch switch 1, respective steps will be explained below.
ステップS11では、検出感度を最大感度にする。 At step S11, the maximum sensitivity of the detection sensitivity.

ステップS12では、検出感度最大で検知したかどうかを判断し、検知したならばステップS13に進み、検知しなければステップS24へ進む。 In step S12, it is determined whether or not detected by the detection sensitivity maximum, if detected the process proceeds to step S13, the process proceeds to step S24 to be detected.

ステップS13では、検出感度を1ステップ分、小さくする。 In step S13, 1 step partial detection sensitivity is reduced. この1ステップ分は最大感度から最小感度までを複数ステップ分に分けたものとする。 This one step shall parted to the minimum sensitivity from the maximum sensitivity to multiple step minute.

ステップS14では、その検出感度において、検知したかどうかを判断し、検知したならばステップS15へ進み、検知しないならばステップS19へ進む。 In step S14, the detection sensitivity, it is determined whether the detected if the detected processing proceeds to step S15, the process proceeds if not detected to step S19.

ステップS15では、検出感度が最小かどうかを判断し、最小であるならばステップS16へ進み、最小でないならばステップS13へ戻る。 In step S15, it is determined whether the detection sensitivity is minimal, if the minimum flow proceeds to step S16, returns if not the smallest to step S13.

ステップS16では、最小感度において、検知したかどうかを判断し、検知したならばステップS17へ進み、検知しないならばステップS19へ進む。 In step S16, the minimum sensitivity, to determine whether the detected, if the detected flow proceeds to step S17, the process proceeds if not detected to step S19.

ステップS17では、最小感度における検知から一定時間が経過したかどうかを判断し、一定時間経過したならばステップS18へ進み、一定時間経過していないならばステップS16へ戻る。 In step S17, it is determined whether a predetermined time from the detection of the minimum sensitivity has elapsed, if a predetermined time has elapsed proceeds to step S18, the flow returns to step S16 if certain time has not elapsed.

ステップS18では、検出結果をONにする出力を行う。 At step S18, to output to ON detection result.

ステップS19では、検出感度を1ステップ分、大きくする。 In step S19, 1 step partial detection sensitivity, is increased. この1ステップ分は最大感度から最小感度までを複数ステップ分に分けたものとする。 This one step shall parted to the minimum sensitivity from the maximum sensitivity to multiple step minute.

ステップS20では、その検出感度において、検知したかどうかを判断し、検知したならばステップS21へ進み、検知しなければステップS23へ進む。 In step S20, the detection sensitivity, it is determined whether the detected if the detected processing proceeds to step S21, the process proceeds to step S23 to be detected.

ステップS21では、検知から一定時間が経過したかどうかを判断し、一定時間経過したならばステップS22へ進み、一定時間経過していないならばステップS20へ戻る。 In the step S21, it is determined whether or not a certain period of time from the detection has elapsed, if a predetermined period of time has elapsed the process proceeds to step S22, the process returns to the step S20 if the certain time has not elapsed.

ステップS22では、検出結果をONにする出力を行う。 In step S22, it performs output to ON detection result.

ステップS23では、検出感度が最大かどうかを判断し、最大ならばステップS24へ進み、最大でないならばステップS19へ進む。 In step S23, the detection sensitivity is determined whether the maximum, if the maximum flow proceeds to step S24, the process proceeds to step S19 if not the maximum.

ステップS24では、検出結果をOFFにする出力を行う。 In step S24, it performs output to OFF detection result.

[感度を可変にした検出作用] Detection effect that the sensitivity to variable]
実施例1の静電容量式タッチスイッチ1では、電源が投入されると、検出判定回路54は、感度設定回路52の感度を最大(高感度)にする(S11)。 In capacitive touch switch 1 of the first embodiment, when the power is turned on, detection determination circuit 54, the sensitivity of the sensitivity setting circuit 52 to the maximum (high sensitivity) (S11). この状態で、検出電極3へ人が近接していることを示す静電容量の変化が検知された場合には、検出判定回路54は、感度設定回路52の感度を段階的に下げていく(S12→S13)。 In this state, if the change in capacitance indicating that person to sensing electrode 3 are close is detected, the detection judging circuit 54 will stepwise lowering the sensitivity of the sensitivity setting circuit 52 ( S12 → S13).

感度を最小にしても検知されており、さらに、一定時間経過しても検知されている場合(S14〜S17)、操作入力を検出したと判定し、検出結果をONにする(S18)。 Sensitivity has been detected even with minimal, further, if it is detected even after the elapse of a predetermined time (S14 to S17), it determines that it has detected an operation input, to ON detection result (S18). (図4参照) (See Fig. 4)
この状態は、例えば、手袋等なく直接指をしっかりパネル2の検出エリアに接触させた状態である。 This condition is, for example, kept in contact with the detection area of ​​the firm panel 2 directly fingers without gloves. このような場合には、確実に操作入力が検出される。 In such a case, surely the operation input is detected.

次に、感度を下げていくと、検知がなくなる場合である。 Next, a case where the gradually lowering the sensitivity, the detection is eliminated. この場合には、検知がなくなった感度を段階的に挙げていくようにする(S14→S19)。 In this case, so it will include stepwise detection has disappeared sensitivity (S14 → S19). これにより、再度検知がある場合には、一定時間経過により、操作入力を検出したと判定し、検出結果をONにする(S20〜S22)。 Thus, if there is a detection again by a certain period of time, it determines that it has detected an operation input, to ON detection result (S20 to S22). (図5参照) (See Figure 5)
この状態は、例えば、手袋等で指が覆われた状態で、パネル2の検出エリアに指を接触させた状態である。 This state, for example, in a state where a finger is covered with gloves, a state contacting the finger on the detection area of ​​the panel 2. このような場合にも、本実施例1の静電容量式タッチスイッチ1では、変化させた感度と時間により、確実に操作入力の検出を行う。 In such a case, the capacitive touch switch 1 of the embodiment 1, the sensitivity is varied time, a reliable detection of the operation input performed.
つまり、図9に示すように、単に初期設定として感度調整されたり、設計段階から感度が固定されたものに対して、このように感度を変更しつつ検出を行うことにより、確実な検出となる。 That is, as shown in FIG. 9, or merely be sensitivity adjustment as an initial setting, for what sensitivity from the design stage is fixed, by detecting this way while changing the sensitivity, the reliable detection .

また、感度を下げていくと検知がなくなり、その状態から感度を段階的に上げても、再び検知がされない場合には、操作入力を検出しないと判定して検出結果をOFFにする(S23→S24)。 Further, there is no detection and gradually lowering the sensitivity, even if sensitivity is increased stepwise from that state, if not the detected again, turns OFF the determination to the detection result and does not detect the operation input (S23 → S24).
この状態は、例えば、操作位置なく指が検出エリアを横切るような場合であり、このような場合にも、本実施例1の静電容量式タッチスイッチ1では、最大感度から下げ、再度最大感度まで上げる感度の変化と時間により、手袋等で指が覆われた場合でも確実に操作入力を検出しつつ、非操作入力を確実に非検出と判定する。 This condition is, for example, when the finger without operation position that crosses the detection area, even in such a case, the capacitive touch switch 1 of the embodiment 1, down from the maximum sensitivity, the maximum sensitivity again the change and time sensitivity increased to, while reliably detected operation input even if the finger is covered with gloves determines that reliably undetected non operation input.

さらに、実施例1の静電容量式タッチスイッチ1では、温度センサ53を設けている。 Further, the capacitive touch switch 1 of the first embodiment, is provided with a temperature sensor 53. 図6に示すように、温度が高い、いわゆる常温の場合には、検出感度を低くする。 As shown in FIG. 6, the temperature is high, in the case of so-called room temperature, to lower the detection sensitivity. また、温度に応じた感度とする。 Also, the sensitivity as a function of temperature. 温度が常温に近づくにつれて、手袋等で指を覆っている可能性が低くなる。 As the temperature approaches room temperature, the lower the possibility of covering the finger gloves. よって、この処理を行うことにより、処理の負担を減らす。 Thus, by carrying out this process, reduce the burden of processing.
また、温度が高い場合であっても、手袋等で指を覆っている可能性も少ないがある。 Further, even when the temperature is high, there is also less chance that covers the finger gloves. 実施例1において、図3に示す電源投入時のステップS11の最初に感度を最大にする処理を、図6に示す感度と温度の関係から、温度が常温の場合には、最大感度を低くして検出を開始するようにすれば、温度が高くても指を手袋等で覆っている場合が確実に検出され、かつ処理の負担を減らすことになる。 In Example 1, the process to maximize first sensitivity of step S11 when the power is turned on as shown in FIG. 3, the relationship between sensitivity and temperature shown in FIG. 6, when the temperature is room temperature, to lower the maximum sensitivity If to start detection Te, if even higher temperature covers the finger glove or the like is reliably detected, and will reduce the burden of processing.

このようにして、操作入力の検出が行なわれた後は、最大感度にして、次の検出に備えることで、繰り返し確実な入力検出を行う(図7参照)。 In this way, after the detection of the operation input has been performed, and the maximum sensitivity, by providing the next detection Repeated reliable input detection (see FIG. 7).
さらに、操作入力の検出が行われた場合、その検出した感度を次回、若しくは次回以降の検出感度として用いるようにすれば、処理回路の負担を減らしつつも、安定した検出が行える。 Furthermore, when the detected operation input has been performed, the next time the sensitivity to the detection, or the joint use of such a detection sensitivity of the next time, while reducing the burden of processing circuits, enabling stable detection. このようにしてもよい(図8参照)。 Such may be (see Figure 8).

[車両への搭載について] [For mounted on the vehicle]
実施例1の静電容量式タッチスイッチ1は、上記説明のように素手の指であっても、手袋等で覆われた指であっても、確実な検出が成される。 Capacitive touch switch 1 of the first embodiment, even bare hands finger as described above, even a finger covered with gloves, reliable detection is achieved. そのため、環境温度と車室内温度によって、手袋の着用があり、且つ操作入力の検出に非常に確実性が要求される車両への搭載に適している。 Therefore, the environmental temperature and the vehicle interior temperature, there is wear gloves, are suitable for installation in vehicles and very certainty in the detection of the operation input is required. 車両において、操作入力に確実性を欠けば、使用者が車両を使いにくいと感じること、及び車両評価につながるからであり、確実性が高いこと、タッチスイッチの良好な入力感は、操作フィーリングを向上させ、車両評価の向上につながるのである。 In the vehicle, if lack of certainty in the operation input, to feel that the user is difficult to use the vehicle, and is because lead to vehicle evaluation, the higher the reliability, good sense of input of the touch switches, the operation feeling It was improved, and lead to improvement of vehicle evaluation.

次に、効果を説明する。 Next, a description will be given effect.
実施例1の静電容量式タッチスイッチにあっては、下記に列挙する効果を得ることができる。 In the capacitive touch switch according to the embodiment 1, it is possible to obtain the following effects.

(1)静電容量の変化で操作入力を検出する静電容量式タッチスイッチ1において、感度設定回路52により検出感度を高感度から低感度へ変化させながら操作入力を検出するため、厚手の手袋をしていても、手袋なしの指であっても、確実に検出することができる。 (1) In the capacitive touch switch 1 for detecting the operation input by the change in capacitance, for detecting an operation input while changing the detection sensitivity from high sensitivity to the low sensitivity by the sensitivity setting circuit 52, thick gloves even if you are, even without gloves finger, it can be reliably detected.

(2)感度を変化させて検出した操作入力が継続されている場合に操作入力の検出と判定する検出判定回路54を設けたため、厚手の手袋をしていても、手袋なしの指であっても、さらに確実に検出することができる。 (2) since the operation has been detected by changing the sensitivity input is provided to detect and determine the detection determination circuit 54 of the operation input when being continued, even if a thick glove, a of gloves finger also, it is possible to more reliably detected.

(3)温度を検出する温度センサ53と、温度に応じて感度を設定する感度設定回路52とを備えたため、確実な検出をしつつ、処理負荷を軽減することができる。 (3) and a temperature sensor 53 for detecting the temperature, because of a sensitivity setting circuit 52 for setting the sensitivity according to the temperature, while the reliable detection, it is possible to reduce processing load.

(4)検出判定回路54及び感度設定回路52は、電源投入後に最初に検出した感度を維持するため、処理回路の負担を減らしつつも、安定した検出ができる。 (4) detecting decision circuit 54 and a sensitivity setting circuit 52, to maintain the first detected sensitivity after power, even while reducing the burden of the processing circuit, it is stable detection.

(5)静電容量の変化を検出する検出回路51と、検出回路51の感度を設定及び変更を行なう感度設定回路52と、操作入力の検出を判定する検出判定回路54とを備え、感度設定回路52は、検出感度を高感度から低感度へ変化させ、検出回路51の検出が非検出になると、検出感度を低感度から高感度へ変化させ、検出判定回路54は、検出感度を低感度から高感度へ変化させて再度検出された状態が継続すると、検出と判定するため、厚手の手袋をしていても、手袋なしの指であっても、確実に検出することができる。 (5) and the detection circuit 51 for detecting a change in capacitance, includes a sensitivity setting circuit 52 for setting and changing the sensitivity of the detection circuit 51, and a detection determining circuit 54 determines the detection of the operation input sensitivity setting circuit 52 changes the detection sensitivity from high sensitivity to the low sensitivity, the detection of the detection circuit 51 becomes undetected by changing the detection sensitivity from low sensitivity to high sensitivity detection determination circuit 54, the detection sensitivity low sensitivity When changing to a higher sensitivity condition detected again continues from order to determine the detection, even if the thick gloves, even without gloves fingers, can be reliably detected.

以上、本発明の静電容量式タッチスイッチを実施例1に基づき説明してきたが、具体的な構成については、これらの実施例に限られるものではなく、特許請求の範囲の各請求項に係る発明の要旨を逸脱しない限り、設計の変更や追加等は許容される。 Although the capacitive touch switch according to the present invention has been described with reference to Examples 1, The specific configuration is not limited to these embodiments, according to the following claims without departing from the gist of the invention, changes and additions like design is acceptable.

実施例1では、検出感度を段階的(ステップづつ)に下げる、又は上げるようにしたが、無段階で下げる又は上げるようにしてもよい。 In Example 1, lowering the detection sensitivity in stages (step by step), or has been so raised may be lowered or raised steplessly.
検出回路51、感度設定回路52、検出判定回路54は、1つの回路として構成されても、別体に構成されてもよいものとする。 Detection circuit 51, the sensitivity setting circuit 52, detection determination circuit 54 be configured as a single circuit, it is assumed that may be configured separately.

本願の静電容量式タッチスイッチは、非常に確実性の高い操作入力の検出を行えるため、車両への搭載が特に適している。 Capacitive touch switch of the present application, since that allows the detection of very high reliability operation input, mounted on the vehicle is particularly suitable. また、本願の静電容量式タッチスイッチは、近接センサや非接触センサへの適用が容易である。 Further, capacitive touch switch of the present application, it is easy to apply to the proximity sensor or a non-contact sensor.

実施例1の静電容量式タッチスイッチの概略構成を示す図である。 It is a diagram showing a schematic configuration of a capacitive touch switch according to the embodiment 1. 静電容量式タッチスイッチの基板回路のブロック図である。 It is a block diagram of a substrate circuit capacitive touch switch. 静電容量式タッチスイッチの基板回路で実行される操作入力検出処理の流れを示すフローチャート図である。 It is a flowchart showing the flow of the operation input detection process performed by the substrate circuit capacitive touch switch. 実施例1における検出感度、検知状態、検出結果のタイムチャート図である。 Detection sensitivity in the first embodiment, the detection state is a time chart of the detection result. 実施例1における検出感度、検知状態、検出結果のタイムチャート図である。 Detection sensitivity in the first embodiment, the detection state is a time chart of the detection result. 実施例1における検出感度と温度の関係を示すグラフ図である。 Is a graph showing the relationship between sensitivity and temperature in Example 1. 実施例1における検出感度、検知状態、検出結果のタイムチャート図である。 Detection sensitivity in the first embodiment, the detection state is a time chart of the detection result. 実施例1における検出感度、検知状態、検出結果のタイムチャート図である。 Detection sensitivity in the first embodiment, the detection state is a time chart of the detection result. 静電容量式タッチスイッチの説明図である。 It is an explanatory view of a capacitive touch switch.

符号の説明 DESCRIPTION OF SYMBOLS

1 静電容量式タッチスイッチ 2 パネル 3 検出電極 4 電極用基板 5 基板回路 51 検出回路 52 感度設定回路 53 温度センサ 54 検出判定回路 1 capacitive touch switch 2 Panel 3 detection electrode 4 electrode substrate 5 substrate circuit 51 detecting circuit 52 sensitivity setting circuit 53 temperature sensor 54 detecting decision circuit

Claims (5)

  1. 静電容量の変化で操作入力を検出する静電容量式タッチスイッチにおいて、 In capacitive touch switch for detecting the operation input by the change in capacitance,
    検出感度を高感度から低感度へ変化させながら操作入力を検出する、 The detection sensitivity for detecting an operation input while changing from high sensitivity to the low sensitivity,
    ことを特徴とする静電容量式タッチスイッチ。 Capacitive touch switch, characterized in that.
  2. 請求項1に記載の静電容量式タッチスイッチにおいて、 In capacitive touch switch according to claim 1,
    感度を変化させて検出した操作入力が継続されている場合に操作入力の検出と判定する検出判定手段を設けた、 Provided detection and determining the detection determining means of the operation input when the operation input detected by changing the sensitivity is continued,
    ことを特徴とする静電容量式タッチスイッチ。 Capacitive touch switch, characterized in that.
  3. 請求項1又は請求項2に記載の静電容量式タッチスイッチにおいて、 In capacitive touch switch according to claim 1 or claim 2,
    温度を検出する温度検出手段と、 Temperature detecting means for detecting the temperature,
    温度に応じて感度を設定する感度設定手段と、 And sensitivity setting means for setting the sensitivity in accordance with the temperature,
    を備えた、 With,
    ことを特徴とする静電容量式タッチスイッチ。 Capacitive touch switch, characterized in that.
  4. 請求項1〜請求項3のいずれか1項に記載の静電容量式タッチスイッチにおいて、 In capacitive touch switch according to any one of claims 1 to 3,
    電源投入後に最初に検出した感度を維持する感度維持手段を設けた、 After power-up providing the sensitivity maintaining means for maintaining the first and detection sensitivity,
    ことを特徴とする静電容量式タッチスイッチ。 Capacitive touch switch, characterized in that.
  5. 請求項1〜請求項4のいずれか1項に記載の静電容量式タッチスイッチにおいて、 In capacitive touch switch according to any one of claims 1 to 4,
    静電容量の変化を検出する検出手段と、 Detection means for detecting a change in capacitance,
    前記検出手段の感度を設定及び変更を行なう感度設定手段と、 And sensitivity setting means for setting and changing the sensitivity of said detection means,
    操作入力の検出を判定する検出判定手段と、 And determining the detection decision means for detecting the operation input,
    を備え、 Equipped with a,
    前記感度設定手段は、検出感度を高感度から低感度へ変化させ、前記検出手段の検出が非検出になると、検出感度を低感度から高感度へ変化させ、 The sensitivity setting means changes the detection sensitivity from high sensitivity to the low sensitivity, the detection of said detecting means becomes a non-detection, by changing the detection sensitivity from low sensitivity to high sensitivity,
    前記検出判定手段は、検出感度を低感度から高感度へ変化させて再度検出された状態が継続すると、検出と判定する、 The detection judging means, when detected detection sensitivity again by changing from low sensitivity to high sensitivity state is continued, it is determined that detection,
    ことを特徴とする静電容量式タッチスイッチ。 Capacitive touch switch, characterized in that.
JP2005211204A 2005-07-21 2005-07-21 Electrostatic capacity type touch switch Pending JP2007027034A (en)

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