WO2009038159A1 - 近接センサ - Google Patents

近接センサ Download PDF

Info

Publication number
WO2009038159A1
WO2009038159A1 PCT/JP2008/066956 JP2008066956W WO2009038159A1 WO 2009038159 A1 WO2009038159 A1 WO 2009038159A1 JP 2008066956 W JP2008066956 W JP 2008066956W WO 2009038159 A1 WO2009038159 A1 WO 2009038159A1
Authority
WO
WIPO (PCT)
Prior art keywords
circuit
oscillation
amplitude
control circuit
resonance
Prior art date
Application number
PCT/JP2008/066956
Other languages
English (en)
French (fr)
Inventor
Masahisa Niwa
Kunitaka Okada
Fumihiro Kasano
Sukoya Tawaratsumida
Original Assignee
Panasonic Electric Works Co., Ltd.
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
Priority claimed from JP2007244337A external-priority patent/JP4858382B2/ja
Priority claimed from JP2008029500A external-priority patent/JP2009094993A/ja
Priority claimed from JP2008029501A external-priority patent/JP2009094994A/ja
Priority claimed from JP2008125238A external-priority patent/JP4981745B2/ja
Priority claimed from JP2008207266A external-priority patent/JP2010045532A/ja
Application filed by Panasonic Electric Works Co., Ltd. filed Critical Panasonic Electric Works Co., Ltd.
Priority to US12/679,157 priority Critical patent/US8432169B2/en
Publication of WO2009038159A1 publication Critical patent/WO2009038159A1/ja

Links

Classifications

    • 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
    • H03K17/95—Proximity switches using a magnetic detector
    • H03K17/952—Proximity switches using a magnetic detector using inductive coils
    • H03K17/9537—Proximity switches using a magnetic detector using inductive coils in a resonant circuit
    • H03K17/9542—Proximity switches using a magnetic detector using inductive coils in a resonant circuit forming part of an oscillator
    • H03K17/9547—Proximity switches using a magnetic detector using inductive coils in a resonant circuit forming part of an oscillator with variable amplitude

Landscapes

  • Electronic Switches (AREA)

Abstract

　近接センサは、発振回路、振幅測定回路、制御回路及び信号処理回路を有する。発振回路は、ＬＣ共振回路と、電流を該ＬＣ共振回路に供給して、発振電圧を該ＬＣ共振回路に発生させるように構成される発振制御回路とを有する。振幅測定回路は、該発振電圧の振幅に対応する振幅信号を発生するように構成される。制御回路は、該振幅信号に基づいて、該発振制御回路の負性コンダクタンスを、該ＬＣ共振回路が発振することができる臨界値に設定するように構成される。信号処理回路は、前記負性コンダクタンスに関連するパラメータに基づいて、対象物と該検知コイルとの間の距離に対応する距離信号を生成するように構成される。
PCT/JP2008/066956 2007-09-20 2008-09-19 近接センサ WO2009038159A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/679,157 US8432169B2 (en) 2007-09-20 2008-09-19 Proximity sensor

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
JP2007244337A JP4858382B2 (ja) 2007-09-20 2007-09-20 近接センサ
JP2007-244337 2007-09-20
JP2008-029501 2008-02-08
JP2008029500A JP2009094993A (ja) 2007-09-20 2008-02-08 近接センサ
JP2008-029500 2008-02-08
JP2008029501A JP2009094994A (ja) 2007-09-20 2008-02-08 近接センサ
JP2008-125238 2008-05-12
JP2008125238A JP4981745B2 (ja) 2008-05-12 2008-05-12 近接センサ
JP2008207266A JP2010045532A (ja) 2008-08-11 2008-08-11 近接センサ
JP2008-207266 2008-08-11

Publications (1)

Publication Number Publication Date
WO2009038159A1 true WO2009038159A1 (ja) 2009-03-26

Family

ID=40467968

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/066956 WO2009038159A1 (ja) 2007-09-20 2008-09-19 近接センサ

Country Status (1)

Country Link
WO (1) WO2009038159A1 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105190325A (zh) * 2013-03-04 2015-12-23 德克萨斯仪器股份有限公司 基于受控负阻抗的谐振阻抗感测
CN113847862A (zh) * 2021-10-09 2021-12-28 北京理工大学 一种侵彻引信用电容传感器信号调理电路

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0515536U (ja) * 1991-08-01 1993-02-26 オムロン株式会社 近接スイツチ
JPH0640802U (ja) * 1992-11-10 1994-05-31 株式会社キーエンス 近接センサ
JPH07162280A (ja) * 1993-12-08 1995-06-23 Omron Corp 近接スイッチ
JP2007005208A (ja) * 2005-06-27 2007-01-11 Matsushita Electric Works Ltd 検出スイッチ

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0515536U (ja) * 1991-08-01 1993-02-26 オムロン株式会社 近接スイツチ
JPH0640802U (ja) * 1992-11-10 1994-05-31 株式会社キーエンス 近接センサ
JPH07162280A (ja) * 1993-12-08 1995-06-23 Omron Corp 近接スイッチ
JP2007005208A (ja) * 2005-06-27 2007-01-11 Matsushita Electric Works Ltd 検出スイッチ

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105190325A (zh) * 2013-03-04 2015-12-23 德克萨斯仪器股份有限公司 基于受控负阻抗的谐振阻抗感测
CN105190325B (zh) * 2013-03-04 2019-07-26 德克萨斯仪器股份有限公司 基于受控负阻抗的谐振阻抗感测
CN113847862A (zh) * 2021-10-09 2021-12-28 北京理工大学 一种侵彻引信用电容传感器信号调理电路
CN113847862B (zh) * 2021-10-09 2023-11-24 北京理工大学 一种侵彻引信用电容传感器信号调理电路

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