JP6362915B2 - センサ回路構成 - Google Patents

センサ回路構成 Download PDF

Info

Publication number
JP6362915B2
JP6362915B2 JP2014095408A JP2014095408A JP6362915B2 JP 6362915 B2 JP6362915 B2 JP 6362915B2 JP 2014095408 A JP2014095408 A JP 2014095408A JP 2014095408 A JP2014095408 A JP 2014095408A JP 6362915 B2 JP6362915 B2 JP 6362915B2
Authority
JP
Japan
Prior art keywords
capacitor
sensor
phase
differential amplifier
capacitance
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
JP2014095408A
Other languages
English (en)
Japanese (ja)
Other versions
JP2014219408A5 (enExample
JP2014219408A (ja
Inventor
ラルフ・スタイナー・ファンハ
マシュー・ゴネ
ローランド・ライター
マルセル・プルス
Original Assignee
ゼンジリオン・アーゲー
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 ゼンジリオン・アーゲー filed Critical ゼンジリオン・アーゲー
Publication of JP2014219408A publication Critical patent/JP2014219408A/ja
Publication of JP2014219408A5 publication Critical patent/JP2014219408A5/ja
Application granted granted Critical
Publication of JP6362915B2 publication Critical patent/JP6362915B2/ja
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Measuring Fluid Pressure (AREA)
JP2014095408A 2013-05-03 2014-05-02 センサ回路構成 Active JP6362915B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP13002385.6 2013-05-03
EP13002385.6A EP2799891A1 (en) 2013-05-03 2013-05-03 Sensor circuit arrangement

Publications (3)

Publication Number Publication Date
JP2014219408A JP2014219408A (ja) 2014-11-20
JP2014219408A5 JP2014219408A5 (enExample) 2017-03-23
JP6362915B2 true JP6362915B2 (ja) 2018-07-25

Family

ID=48463659

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2014095408A Active JP6362915B2 (ja) 2013-05-03 2014-05-02 センサ回路構成

Country Status (3)

Country Link
US (1) US20140327455A1 (enExample)
EP (1) EP2799891A1 (enExample)
JP (1) JP6362915B2 (enExample)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9436337B2 (en) * 2014-12-15 2016-09-06 Synaptics Incorporated Switched capacitance techniques for input sensing
EP3779476B1 (en) * 2018-05-08 2022-06-15 Nf Holdings Corporation Capacitance measuring circuit, and capacitance displacement meter
EP3699583A1 (en) * 2019-02-21 2020-08-26 Sensirion AG Capacitive sensor
CN114018298B (zh) * 2021-10-22 2022-07-22 西安电子科技大学 一种用于mems电容型传感器的电容-电压变换电路
US11620946B1 (en) * 2022-03-03 2023-04-04 Apple Inc. Dual-mode sense circuit with enhanced dynamic range and accuracy
CN114915290A (zh) * 2022-04-25 2022-08-16 西安航天民芯科技有限公司 一种单极板电容直接转换传感器寄生电容平衡电路及方法

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2561040B2 (ja) * 1994-11-28 1996-12-04 日本電気株式会社 容量型センサの容量変化検出回路およびその検出方法
DE10035192C1 (de) * 2000-07-20 2001-10-11 Carl Mahr Holding Gmbh Kapazitiver Wegaufnehmer für stromsparende Messgeräte
JP4336066B2 (ja) * 2001-07-11 2009-09-30 株式会社豊田中央研究所 静電容量型センサ装置
JP4508480B2 (ja) * 2001-07-11 2010-07-21 株式会社豊田中央研究所 静電容量型センサのセンサ特性測定装置
JP2003078365A (ja) * 2001-09-05 2003-03-14 Sony Corp オペアンプ回路、静電容量検出装置および指紋照合装置
US6924760B1 (en) * 2004-02-27 2005-08-02 Standard Microsystems Corporation Highly accurate switched capacitor DAC
US7235983B2 (en) * 2005-03-09 2007-06-26 Analog Devices, Inc. One terminal capacitor interface circuit
JP2006313084A (ja) * 2005-05-06 2006-11-16 Denso Corp 容量式物理量センサ
US7339384B2 (en) * 2005-06-02 2008-03-04 Georgia Tech Research Corporation System and method for sensing capacitance change of a capacitive sensor
JP4375579B2 (ja) * 2007-02-08 2009-12-02 株式会社デンソー 容量式物理量検出装置
KR100915149B1 (ko) * 2007-07-19 2009-09-03 (주)에스엠엘전자 다채널 용량 감지 회로
US7724170B2 (en) * 2007-12-02 2010-05-25 The Chinese University Of Hong Kong Sensor interface devices and amplifiers
TWI361280B (en) * 2008-07-18 2012-04-01 Raydium Semiconductor Corp Evaluation circuit for capacitance and method thereof
TWI381173B (zh) * 2008-10-29 2013-01-01 Raydium Semiconductor Corp 電容量測電路及其電容量測方法
WO2010131640A1 (ja) * 2009-05-12 2010-11-18 アルプス電気株式会社 静電容量検出回路
JP2012037439A (ja) * 2010-08-10 2012-02-23 Asahi Kasei Electronics Co Ltd 静電容量検出回路
JP5429207B2 (ja) * 2010-09-08 2014-02-26 株式会社デンソー 容量式物理量検出装置
US8566955B2 (en) * 2010-10-31 2013-10-22 Pixart Imaging Inc. User indentification with capacitive touchscreen

Also Published As

Publication number Publication date
US20140327455A1 (en) 2014-11-06
JP2014219408A (ja) 2014-11-20
EP2799891A1 (en) 2014-11-05

Similar Documents

Publication Publication Date Title
JP6362915B2 (ja) センサ回路構成
JP4352562B2 (ja) 信号処理装置
US8970227B2 (en) Circuit for capacitive touch applications
EP2417702B1 (en) Switched capacitor notch filter
CN108124474B (zh) 检测电容的装置、电子设备和检测压力的装置
EP2876407B1 (en) Capacitive sensing interface for proximity detection
KR101304195B1 (ko) 향상된 노이즈 필터링 특성을 갖는 정전 용량 센서, 정전 용량 센서의 노이즈 필터링 방법 및 컴퓨터 판독 가능한 기록 매체
EP2617132B1 (en) Circuit for capacitive touch applications
CN108064344B (zh) 差分电路、电容检测电路、触摸检测装置和终端设备
US20150145535A1 (en) Capacitive sensing interface for proximity detection
US20100207795A1 (en) Discrete-time circuit
WO2019144305A1 (zh) 电容检测电路、触摸检测装置和终端设备
CN110495104A (zh) 模数转换器、传感器装置和用于模数转换的方法
JP5341745B2 (ja) 磁気検出装置
JP2011215124A (ja) 容量検出装置及び容量検出方法
JP6159296B2 (ja) ホールセンサ及びホール起電力検出方法
EP3072241B1 (en) Capacitance processing circuit and a mems device
US9030213B2 (en) Method and system for measuring a time constant of an integrated circuit, and integrated circuit provided with such a system
JP6243281B2 (ja) センサ回路
JP2020003211A (ja) 容量測定回路及び容量測定システム
JP2016034097A (ja) 積分回路及びａｄ変換器
JP2004347493A (ja) 異常検出機能を持つ静電容量式センサ装置
Yarragunta et al. Thermal Noise Analysis of Accumulation-based S/H Circuit for Shunt Current Sensing

Legal Events

Date Code Title Description
A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20170220

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20170220

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20171219

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20171220

A601 Written request for extension of time

Free format text: JAPANESE INTERMEDIATE CODE: A601

Effective date: 20180309

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20180517

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20180529

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20180627

R150 Certificate of patent or registration of utility model

Ref document number: 6362915

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250