JPS57204414A - Process converter - Google Patents

Process converter

Info

Publication number
JPS57204414A
JPS57204414A JP9005881A JP9005881A JPS57204414A JP S57204414 A JPS57204414 A JP S57204414A JP 9005881 A JP9005881 A JP 9005881A JP 9005881 A JP9005881 A JP 9005881A JP S57204414 A JPS57204414 A JP S57204414A
Authority
JP
Japan
Prior art keywords
comparator
input terminal
pass filter
low
capacitive sensor
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
JP9005881A
Other languages
Japanese (ja)
Inventor
Tadashi Azegami
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.)
Yokogawa Electric Corp
Original Assignee
Hokushin Electric Works Ltd
Yokogawa Hokushin Electric Corp
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 Hokushin Electric Works Ltd, Yokogawa Hokushin Electric Corp filed Critical Hokushin Electric Works Ltd
Priority to JP9005881A priority Critical patent/JPS57204414A/en
Publication of JPS57204414A publication Critical patent/JPS57204414A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • G01D5/241—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 relative movement of capacitor electrodes
    • G01D5/2417—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 relative movement of capacitor electrodes by varying separation

Abstract

PURPOSE:To get rid of influence of an induced noise, by supplying a capacitive sensor to the other input terminal of a comparator to which the capacitive sensor is connected through a low-pass filter. CONSTITUTION:A moving electrode 1c of a capacitive sensor 1 is connected to a + input terminal of a comparator 4, also is connected to a - input terminal of a low-pass filter 20 through the low-pass filter 20, and accordingly, reference voltage Va applied to a - input terminal of the comparator 4 is varied by synchronizing with a noise signal induced to the moving electrode 1c, and oscillation frequency of a self-energizing oscillating circuit containing the comparator 4 is not influenced by a noise signal.
JP9005881A 1981-06-11 1981-06-11 Process converter Pending JPS57204414A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9005881A JPS57204414A (en) 1981-06-11 1981-06-11 Process converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9005881A JPS57204414A (en) 1981-06-11 1981-06-11 Process converter

Publications (1)

Publication Number Publication Date
JPS57204414A true JPS57204414A (en) 1982-12-15

Family

ID=13987970

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9005881A Pending JPS57204414A (en) 1981-06-11 1981-06-11 Process converter

Country Status (1)

Country Link
JP (1) JPS57204414A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01141702A (en) * 1987-11-30 1989-06-02 Tokyo Seimitsu Co Ltd Control circuit for grinding blade

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4967660A (en) * 1972-04-28 1974-07-01
JPS5161864A (en) * 1974-11-25 1976-05-28 Shimadzu Corp Seidenyoryo chokuryudenatsuhenkansochi
JPS5221875A (en) * 1975-08-08 1977-02-18 Illinois Tool Works Wheel rpm sensor provided with exciter ring runnout compensator
JPS52123673A (en) * 1976-04-07 1977-10-18 Bosch Gmbh Robert Circuit system for detecting position of rotative part

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4967660A (en) * 1972-04-28 1974-07-01
JPS5161864A (en) * 1974-11-25 1976-05-28 Shimadzu Corp Seidenyoryo chokuryudenatsuhenkansochi
JPS5221875A (en) * 1975-08-08 1977-02-18 Illinois Tool Works Wheel rpm sensor provided with exciter ring runnout compensator
JPS52123673A (en) * 1976-04-07 1977-10-18 Bosch Gmbh Robert Circuit system for detecting position of rotative part

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01141702A (en) * 1987-11-30 1989-06-02 Tokyo Seimitsu Co Ltd Control circuit for grinding blade

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