TWI651930B - 使用三角積分轉換之電容近接偵測 - Google Patents

使用三角積分轉換之電容近接偵測 Download PDF

Info

Publication number
TWI651930B
TWI651930B TW103120370A TW103120370A TWI651930B TW I651930 B TWI651930 B TW I651930B TW 103120370 A TW103120370 A TW 103120370A TW 103120370 A TW103120370 A TW 103120370A TW I651930 B TWI651930 B TW I651930B
Authority
TW
Taiwan
Prior art keywords
voltage
output
capacitive sensor
duty cycle
input
Prior art date
Application number
TW103120370A
Other languages
English (en)
Chinese (zh)
Other versions
TW201517514A (zh
Inventor
凱斯 寇蒂斯
Original Assignee
微晶片科技公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 微晶片科技公司 filed Critical 微晶片科技公司
Publication of TW201517514A publication Critical patent/TW201517514A/zh
Application granted granted Critical
Publication of TWI651930B publication Critical patent/TWI651930B/zh

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F3/04186—Touch location disambiguation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/24—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying capacitance
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/24—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying capacitance
    • G01D5/2405—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying capacitance by varying dielectric
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
    • G01R27/2605—Measuring capacitance
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/945—Proximity switches
    • H03K17/955—Proximity switches using a capacitive detector
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/30—Delta-sigma modulation
    • H03M3/39—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators
    • H03M3/436—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the order of the loop filter, e.g. error feedback type
    • H03M3/456—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the order of the loop filter, e.g. error feedback type the modulator having a first order loop filter in the feedforward path
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/30—Delta-sigma modulation
    • H03M3/458—Analogue/digital converters using delta-sigma modulation as an intermediate step
    • H03M3/462—Details relating to the decimation process
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/30—Delta-sigma modulation
    • H03M3/458—Analogue/digital converters using delta-sigma modulation as an intermediate step
    • H03M3/494—Sampling or signal conditioning arrangements specially adapted for delta-sigma type analogue/digital conversion systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/37—Measurements
    • G05B2219/37284—Capacitive 3-D proximity sensor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
    • H03K2217/94—Indexing 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
    • H03K2217/96—Touch switches
    • H03K2217/9607—Capacitive touch switches
    • H03K2217/96071—Capacitive touch switches characterised by the detection principle
    • H03K2217/960725—Charge-transfer

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Electronic Switches (AREA)
  • Analogue/Digital Conversion (AREA)
TW103120370A 2013-06-12 2014-06-12 使用三角積分轉換之電容近接偵測 TWI651930B (zh)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201361834236P 2013-06-12 2013-06-12
US61/834,236 2013-06-12
US14/301,462 2014-06-11
US14/301,462 US9587964B2 (en) 2013-06-12 2014-06-11 Capacitive proximity detection using delta-sigma conversion

Publications (2)

Publication Number Publication Date
TW201517514A TW201517514A (zh) 2015-05-01
TWI651930B true TWI651930B (zh) 2019-02-21

Family

ID=52018692

Family Applications (1)

Application Number Title Priority Date Filing Date
TW103120370A TWI651930B (zh) 2013-06-12 2014-06-12 使用三角積分轉換之電容近接偵測

Country Status (7)

Country Link
US (1) US9587964B2 (enExample)
EP (1) EP3008824B1 (enExample)
JP (1) JP6554637B2 (enExample)
KR (1) KR20160020480A (enExample)
CN (1) CN105379120B (enExample)
TW (1) TWI651930B (enExample)
WO (1) WO2014201198A1 (enExample)

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2999833B1 (fr) * 2012-12-19 2015-01-23 Continental Automotive France Dispositif de mesure d'une variation d'une capacite et procede de mesure associe
US10255422B1 (en) * 2014-09-15 2019-04-09 Apple Inc. Identity proxy for access control systems
US10063214B2 (en) * 2015-03-26 2018-08-28 Pixart Imaging Inc. Programmable band-pass filter circuit of analog front-end used for capacitance detection
US9639226B2 (en) * 2015-08-31 2017-05-02 Cypress Semiconductor Corporation Differential sigma-delta capacitance sensing devices and methods
CN105242804B (zh) * 2015-09-21 2017-11-24 京东方科技集团股份有限公司 触控补偿电路、其补偿方法、触摸屏及显示装置
CN108352842B (zh) * 2015-11-20 2022-03-04 株式会社村田制作所 传感器装置
CN106775141B (zh) 2015-12-30 2019-09-27 深圳市汇顶科技股份有限公司 电容感测电路及触控面板
US10170905B2 (en) 2016-04-08 2019-01-01 Infineon Technologies Ag Electronic switching and protection circuit with wakeup function
WO2017179508A1 (ja) * 2016-04-15 2017-10-19 株式会社村田製作所 Ａ／ｄ変換器およびそれを備えるセンサ装置
TWI621984B (zh) * 2016-12-02 2018-04-21 瑞鼎科技股份有限公司 電容値量測電路及電容値量測方法
TWI615762B (zh) * 2016-12-21 2018-02-21 十速興業科技（深圳）有限公司 電容偵測裝置及方法
US10459856B2 (en) 2016-12-30 2019-10-29 Itron, Inc. Variable acquisition buffer length
US9768792B1 (en) * 2016-12-30 2017-09-19 Itron, Inc. Asynchronous sigma-delta analog-to-digital converter
US10378969B2 (en) * 2017-05-10 2019-08-13 Infineon Technologies Ag Temperature sensor
CN110869709B (zh) * 2017-05-12 2022-01-21 德州仪器公司 用以确定电机的可旋转轴的位置的方法及设备
WO2018205260A1 (en) 2017-05-12 2018-11-15 Texas Instruments Incorporated Capacitive-sensing rotary encoders and methods
US11531424B2 (en) * 2017-09-07 2022-12-20 Cypress Semiconductor Corporation Nano-power capacitance-to-digital converter
EP3480606B1 (en) 2017-09-11 2020-05-13 Shenzhen Goodix Technology Co., Ltd. Capacitance detection circuit, capacitance detection method, touch detection device and terminal device
GB2568543B (en) * 2017-11-21 2020-12-09 Johnson Electric Int Ag Multi-stage capacitive sensor
US10236905B1 (en) * 2018-02-21 2019-03-19 Analog Devices Global Unlimited Company Time interleaved filtering in analog-to-digital converters
JP7215124B2 (ja) * 2018-12-10 2023-01-31 株式会社アイシン 静電容量センサ
JP7215123B2 (ja) * 2018-12-10 2023-01-31 株式会社アイシン 静電容量センサ
WO2020122030A1 (ja) * 2018-12-10 2020-06-18 アイシン精機株式会社 静電容量センサ
DE102019133874A1 (de) * 2018-12-12 2020-06-18 Huf Hülsbeck & Fürst Gmbh & Co. Kg Anordnung für ein Fahrzeug
CN113826061B (zh) * 2019-05-10 2024-08-23 株式会社和冠 从传感器控制器向笔发送发送数据的方法及笔
US11133811B2 (en) * 2019-11-08 2021-09-28 Sigmasense, Llc. High resolution analog to digital converter (ADC) with improved bandwidth
KR102375320B1 (ko) 2020-04-24 2022-03-16 관악아날로그 주식회사 용량성 센서를 위한 읽기 회로
CN113691251B (zh) * 2020-05-19 2025-04-08 上海复旦微电子集团股份有限公司 电容式感测设备及感测电容的方法
TWI726753B (zh) * 2020-06-24 2021-05-01 茂達電子股份有限公司 快速預估感測數值電路及其方法
CN112953581B (zh) * 2021-02-23 2022-04-01 广州市慧芯电子科技有限公司 一种信号积分电路、信号处理方法及红外信号接收系统
KR102691711B1 (ko) 2021-06-03 2024-08-02 서울대학교산학협력단 용량성 센서를 위한 읽기 회로
WO2024108015A1 (en) * 2022-11-18 2024-05-23 University Of Washington Sub-femto farad capacitance measurement circuit

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101621291A (zh) * 2009-08-05 2010-01-06 松翰科技股份有限公司 电容式触控感应电路
US20100141275A1 (en) * 2008-11-26 2010-06-10 Kenichi Matsushima Electrostatic capacitance detection device, electrostatic capacitance detection circuit, electrostatic capacitance detection method, and initialization method
TW201136180A (en) * 2010-04-09 2011-10-16 Memsor Corp Capacitive sensor having calibration mechanism and capacitive sensing method
US8089289B1 (en) * 2007-07-03 2012-01-03 Cypress Semiconductor Corporation Capacitive field sensor with sigma-delta modulator
US8446158B1 (en) * 2007-11-09 2013-05-21 Cypress Semiconductor Corporation Compensation for parasitic capacitance of a capacitive sensor

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2661693B2 (ja) * 1987-10-27 1997-10-08 アイシン精機株式会社 人員検出装置
US6774684B2 (en) * 2001-01-17 2004-08-10 Cirrus Logic, Inc. Circuits and methods for controlling transients during audio device power-up and power-down, and systems using the same
JP4359843B2 (ja) * 2004-10-14 2009-11-11 横河電機株式会社 出力回路
WO2006132960A1 (en) 2005-06-03 2006-12-14 Synaptics Incorporated Methods and systems for detecting a capacitance using sigma-delta measurement techniques
US8570053B1 (en) * 2007-07-03 2013-10-29 Cypress Semiconductor Corporation Capacitive field sensor with sigma-delta modulator
US8766910B2 (en) 2007-07-04 2014-07-01 Cypress Semiconductor Corporation Capacitive sensing control knob
US8531193B2 (en) * 2007-07-11 2013-09-10 Marimils Oy Method and device for capacitive detection of objects
CN101685364B (zh) * 2008-09-27 2012-03-07 盛群半导体股份有限公司 触摸面板的传感装置及方法
JP2010108501A (ja) * 2008-10-30 2010-05-13 Samsung Electronics Co Ltd センシング感度を向上させたタッチスクリーンコントローラ、タッチスクリーンコントローラを備えるディスプレイ駆動回路、ディスプレイ装置及びシステム
US20110068810A1 (en) 2009-04-03 2011-03-24 Tpo Displays Corp. Sensing method and driving circuit of capacitive touch screen
EP2428774B1 (en) * 2010-09-14 2013-05-29 Stichting IMEC Nederland Readout system for MEMs-based capacitive accelerometers and strain sensors, and method for reading
CN103299549B (zh) 2010-12-03 2016-11-09 马维尔国际贸易有限公司 具有降噪反馈通路的模数转换器
US9490804B2 (en) 2011-09-28 2016-11-08 Cypress Semiconductor Corporation Capacitance sensing circuits, methods and systems having conductive touch surface
US9437093B2 (en) * 2011-10-06 2016-09-06 Microchip Technology Incorporated Differential current measurements to determine ION current in the presence of leakage current

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8089289B1 (en) * 2007-07-03 2012-01-03 Cypress Semiconductor Corporation Capacitive field sensor with sigma-delta modulator
US8446158B1 (en) * 2007-11-09 2013-05-21 Cypress Semiconductor Corporation Compensation for parasitic capacitance of a capacitive sensor
US20100141275A1 (en) * 2008-11-26 2010-06-10 Kenichi Matsushima Electrostatic capacitance detection device, electrostatic capacitance detection circuit, electrostatic capacitance detection method, and initialization method
CN101621291A (zh) * 2009-08-05 2010-01-06 松翰科技股份有限公司 电容式触控感应电路
TW201136180A (en) * 2010-04-09 2011-10-16 Memsor Corp Capacitive sensor having calibration mechanism and capacitive sensing method

Also Published As

Publication number Publication date
CN105379120A (zh) 2016-03-02
EP3008824B1 (en) 2020-11-18
JP6554637B2 (ja) 2019-08-07
CN105379120B (zh) 2019-05-17
KR20160020480A (ko) 2016-02-23
JP2016525827A (ja) 2016-08-25
US20140368222A1 (en) 2014-12-18
WO2014201198A1 (en) 2014-12-18
TW201517514A (zh) 2015-05-01
EP3008824A1 (en) 2016-04-20
US9587964B2 (en) 2017-03-07

Similar Documents

Publication Publication Date Title
TWI651930B (zh) 使用三角積分轉換之電容近接偵測
CN102282766B (zh) 使用模/数转换器(adc)的内部电容器及电压参考的电容式触摸感测
TWI381173B (zh) 電容量測電路及其電容量測方法
TWI438672B (zh) 電容式觸控螢幕的感測方法與驅動電路
JP2016525827A5 (enExample)
RU2391677C1 (ru) Микроконтроллерный измерительный преобразователь емкости и сопротивления в двоичный код
JP2010152876A (ja) 静電検出装置、静電検出回路、静電検出方法及び初期化方法
WO2019047648A1 (zh) 一种测量电容系统及其测量方法
CN108627704A (zh) 用于测试电容的方法和装置
CN105078416A (zh) 一种电子体温计及其控制方法
RU2392629C1 (ru) Устройство микроконтроллерное для измерения емкости и сопротивления
CN106707009A (zh) 一种宽量程高精度电流统计电路
CN112986691B (zh) 感测电路及使用具有反相器的感测电路计算电容值的方法
RU2502076C1 (ru) Микроконтроллерный измерительный преобразователь сопротивления в двоичный код с генератором, управляемым напряжением
CN105739289B (zh) 一种基于集成鉴相鉴频器的脉冲时间间隔测量方法及电路
CN111854806B (zh) 具有扩展的测量范围的电容数字转换器和相关联的方法
CN214122391U (zh) 测量无源元件的测量电路
CN110998338B (zh) 确定电参数的方法和确定电参数的测量装置
RU2565813C1 (ru) Микроконтроллерный измерительный преобразователь сопротивления, емкости и напряжения в двоичный код
CN108037358B (zh) 单片机频率测试系统及方法
US12487261B2 (en) Interference-insensitive determination of a capacitance
US9684022B2 (en) Sensor device and sensing method using the same
US11906559B2 (en) Enhanced impedance measurement using CTMU
JP5447979B2 (ja) 温度測定器
RU2491558C1 (ru) Микроконтроллерный измерительный преобразователь сопротивления с управляемой чувствительностью

Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees