JPS6064287A - Proximity sensor with mutual interference preventive apparatus - Google Patents

Proximity sensor with mutual interference preventive apparatus

Info

Publication number
JPS6064287A
JPS6064287A JP58173340A JP17334083A JPS6064287A JP S6064287 A JPS6064287 A JP S6064287A JP 58173340 A JP58173340 A JP 58173340A JP 17334083 A JP17334083 A JP 17334083A JP S6064287 A JPS6064287 A JP S6064287A
Authority
JP
Japan
Prior art keywords
oscillation
high frequency
proximity sensor
frequency oscillation
mutual interference
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.)
Pending
Application number
JP58173340A
Other languages
Japanese (ja)
Inventor
Masaki Nakasuga
正樹 中須賀
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SENSAA GIJUTSU KENKYUSHO KK
Original Assignee
SENSAA GIJUTSU KENKYUSHO KK
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 SENSAA GIJUTSU KENKYUSHO KK filed Critical SENSAA GIJUTSU KENKYUSHO KK
Priority to JP58173340A priority Critical patent/JPS6064287A/en
Publication of JPS6064287A publication Critical patent/JPS6064287A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
    • G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
    • G01V3/101—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils by measuring the impedance of the search coil; by measuring features of a resonant circuit comprising the search coil

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Remote Sensing (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Electromagnetism (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
  • Electronic Switches (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

PURPOSE:To reduce erroneous detection by preventing the interference of a large number of high frequency oscillation type approximate sensors provided in a closely contacted state, by differentiating the oscillation frequencies of plural high frequency oscillation circuit parts. CONSTITUTION:The oscillation frequencies of the high frequency oscillation parts of a plurality of, for example, two sets of proximity sensors formed of a resonance condenser and oscillation circuits 3, 5 and 4, 6 received in a same housing are oscillated in different oscillation frequencies. As a result, detection coils 1, 2 generate magnetic fields in different oscillation frequencies and the generation of mutual interference between the coils 1, 2 is prevented and the erroneous detection of a large number of closely contacted high frequency oscillation type proximity sensors is reduced.

Description

【発明の詳細な説明】 本発明は、検出ヘッド分離型高周波発振式近接センサー
に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a detection head separation type high frequency oscillation type proximity sensor.

従来口し型式の高周波発振式近接センサーを複数個使用
する場合、それぞれが同じ周波数で発振しているため、
密接して設置すると近接センサー個々の検出コイルが相
互誘導及び、引？込み現象により、相互干渉を生じ誤検
出が発生し使用が困難であった。When using multiple conventional high-frequency oscillation type proximity sensors, each oscillates at the same frequency, so
When installed closely together, the individual detection coils of the proximity sensor may be mutually induced or pulled together. The crowding phenomenon caused mutual interference and false detection, making it difficult to use.

近年、機器の小型化に伴い甘すます高周波発振式近接セ
ンサーを密接して多数個使用したいと言う要望が多く、
前記の干渉等による誤検出に対する改善が望まれていた
。In recent years, with the miniaturization of devices, there has been an increasing desire to use multiple high-frequency oscillation type proximity sensors in close proximity.
It has been desired to improve the erroneous detection caused by the above-mentioned interference.

以下本発明の詳細な説明を図面とともに実施例に基づい
て説明する。Hereinafter, a detailed explanation of the present invention will be explained based on examples together with drawings.

第１図１．２は検出コイルで、８．４９−Ｌ共振コンテ
ンサーである。５．６は発振回路である。発振周波数け
１，３の検出コイルと３，４の共振コンデンサーで決定
芒れる。通常検出コイルは同１のものを使用するため８
，４の各共振コンデンサーの容量を異なるように定めて
おけば、発振回路５．６はそれぞれ異な７３固波数で発
振する。七の結果検出コイル１と２は異なる発振同波数
で磁界を発生するものである。この対策により、検出コ
イル１と２の間での相互干渉けいちしるしく改善きれた
。以上は２台の近接センツーによる実施例であるが、２
台以上の場合も同様に発振周波数をずらすことで同様の
効果を得ろことができるものである。Figure 1.2 shows the detection coil, which is an 8.49-L resonant condenser. 5.6 is an oscillation circuit. The oscillation frequency is determined by the detection coils of 1 and 3 and the resonance capacitors of 3 and 4. Normally, the same detection coil is used, so 8
, 4 are set to have different capacitances, the oscillation circuits 5 and 6 oscillate at different wave numbers of 73. The seventh result detection coils 1 and 2 generate magnetic fields at different oscillation wave numbers. By this measure, the mutual interference between the detection coils 1 and 2 was significantly improved. The above is an example using two nearby SENTUs.
In the case where the number of oscillators is larger than 10, the same effect can be obtained by shifting the oscillation frequency.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図ｄ本発明の簡略説明図。 １・・・検出コイル　２・・・検出コイル３・・・共振
コンデンサ　４・・・共振コンデンサ５・・・発振回路
　６・・・発振回路 ７・・・出力回路　８・・・出力回路 特許出願人　株式会社センサー技術研究所第　１　図FIG. 1d is a simplified explanatory diagram of the present invention. 1... Detection coil 2... Detection coil 3... Resonance capacitor 4... Resonance capacitor 5... Oscillation circuit 6... Oscillation circuit 7... Output circuit 8... Output circuit patent application People Sensor Technology Laboratory Co., Ltd. Figure 1

Claims (1)

【特許請求の範囲】[Claims] 検出ヘッド分離型高周波発振式近接センサーにおいて、
それぞれ発振周波数が異なる、複数の高周波発振回路部
を同１筐体に収めた構造を有することを特徴とする近接
センサー。In the detection head separated high frequency oscillation type proximity sensor,
A proximity sensor characterized by having a structure in which a plurality of high-frequency oscillation circuit sections each having a different oscillation frequency are housed in the same housing.
JP58173340A 1983-09-19 1983-09-19 Proximity sensor with mutual interference preventive apparatus Pending JPS6064287A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58173340A JPS6064287A (en) 1983-09-19 1983-09-19 Proximity sensor with mutual interference preventive apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58173340A JPS6064287A (en) 1983-09-19 1983-09-19 Proximity sensor with mutual interference preventive apparatus

Publications (1)

Publication Number Publication Date
JPS6064287A true JPS6064287A (en) 1985-04-12

Family

ID=15958606

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58173340A Pending JPS6064287A (en) 1983-09-19 1983-09-19 Proximity sensor with mutual interference preventive apparatus

Country Status (1)

Country Link
JP (1) JPS6064287A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62170278A (en) * 1986-01-23 1987-07-27 株式会社　三共 Pinball game machine
EP0281610A1 (en) * 1986-09-03 1988-09-14 Extrude Hone Corporation Capacitor array sensors tactile and proximity sensing and methods of use thereof
JPH02288122A (en) * 1989-04-28 1990-11-28 Matsushita Electric Ind Co Ltd Key input device
JPH04131839U (en) * 1991-05-23 1992-12-04 オムロン株式会社 proximity switch
JPH0756666A (en) * 1993-08-13 1995-03-03 Nec Corp Protective cover for keyboard displaying ei-side of alphanumerics or kana character
JP2001129214A (en) * 1999-11-02 2001-05-15 Sensatec Kk Pachinko ball counter and detector
GB2399888A (en) * 2003-03-11 2004-09-29 Chamberlain Group Inc Inductive loop detector with automatic frequency change

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62170278A (en) * 1986-01-23 1987-07-27 株式会社　三共 Pinball game machine
EP0281610A1 (en) * 1986-09-03 1988-09-14 Extrude Hone Corporation Capacitor array sensors tactile and proximity sensing and methods of use thereof
JPH02288122A (en) * 1989-04-28 1990-11-28 Matsushita Electric Ind Co Ltd Key input device
JPH04131839U (en) * 1991-05-23 1992-12-04 オムロン株式会社 proximity switch
JPH0756666A (en) * 1993-08-13 1995-03-03 Nec Corp Protective cover for keyboard displaying ei-side of alphanumerics or kana character
JP2001129214A (en) * 1999-11-02 2001-05-15 Sensatec Kk Pachinko ball counter and detector
JP4502432B2 (en) * 1999-11-02 2010-07-14 センサテック株式会社 Pachinko ball counting detector
GB2399888A (en) * 2003-03-11 2004-09-29 Chamberlain Group Inc Inductive loop detector with automatic frequency change

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