JPS57175260A - Detector of revolving direction - Google Patents

Detector of revolving direction

Info

Publication number
JPS57175260A
JPS57175260A JP6010781A JP6010781A JPS57175260A JP S57175260 A JPS57175260 A JP S57175260A JP 6010781 A JP6010781 A JP 6010781A JP 6010781 A JP6010781 A JP 6010781A JP S57175260 A JPS57175260 A JP S57175260A
Authority
JP
Japan
Prior art keywords
output
pulse
detection
revolving direction
flop
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
JP6010781A
Other languages
Japanese (ja)
Inventor
Yoshihisa Hasegawa
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP6010781A priority Critical patent/JPS57175260A/en
Publication of JPS57175260A publication Critical patent/JPS57175260A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P13/00—Indicating or recording presence, absence, or direction, of movement
    • G01P13/02—Indicating direction only, e.g. by weather vane
    • G01P13/04—Indicating positive or negative direction of a linear movement or clockwise or anti-clockwise direction of a rotational movement

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)

Abstract

PURPOSE:To ensure an assured detection of the revolving direction with a simple constitution, by driving a D type flip-flop with the pulse signal corresponding to a detection output having a cycle corresponding to the number of revolution and a phase different by pi/2. CONSTITUTION:Detection pulses (c) and (d) having a cycle corresponding to the number of revolutions given from waveform shaping circuits 4 and 5 with a phase different by pi/2 are applied to both D terminal and clock terminal Cp of a D type flip-flop FF6. Accordingly the FF6 is triggered by the pulse (d) in the forward turn mode when the pulse (c) is at a high level. Then the Q output of the FF6 is set at a high level. In the backword turn mode, the Q output is always set at a low level since the trigger timing caused by the pulse (d) is different. Thus the Q or -Q output of the FF6 ensures an assured detection of the revolving direction with a simple constitution.
JP6010781A 1981-04-21 1981-04-21 Detector of revolving direction Pending JPS57175260A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6010781A JPS57175260A (en) 1981-04-21 1981-04-21 Detector of revolving direction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6010781A JPS57175260A (en) 1981-04-21 1981-04-21 Detector of revolving direction

Publications (1)

Publication Number Publication Date
JPS57175260A true JPS57175260A (en) 1982-10-28

Family

ID=13132543

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6010781A Pending JPS57175260A (en) 1981-04-21 1981-04-21 Detector of revolving direction

Country Status (1)

Country Link
JP (1) JPS57175260A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61178410U (en) * 1985-04-26 1986-11-07
JPS63142271A (en) * 1986-12-04 1988-06-14 Daikin Ind Ltd Rotating direction discriminator for rotational apparatus provided with motor
US6911820B2 (en) 2002-09-20 2005-06-28 Matsushita Electric Industrial Co., Ltd. Phase detection device, dial type detection device, and phase detection method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5468282A (en) * 1977-11-11 1979-06-01 Hitachi Ltd Forward and reverse detector

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5468282A (en) * 1977-11-11 1979-06-01 Hitachi Ltd Forward and reverse detector

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61178410U (en) * 1985-04-26 1986-11-07
JPH052803Y2 (en) * 1985-04-26 1993-01-25
JPS63142271A (en) * 1986-12-04 1988-06-14 Daikin Ind Ltd Rotating direction discriminator for rotational apparatus provided with motor
US6911820B2 (en) 2002-09-20 2005-06-28 Matsushita Electric Industrial Co., Ltd. Phase detection device, dial type detection device, and phase detection method

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