JPS5777968A - Detecting circuit for stoppage rotation of motor - Google Patents

Detecting circuit for stoppage rotation of motor

Info

Publication number
JPS5777968A
JPS5777968A JP15487680A JP15487680A JPS5777968A JP S5777968 A JPS5777968 A JP S5777968A JP 15487680 A JP15487680 A JP 15487680A JP 15487680 A JP15487680 A JP 15487680A JP S5777968 A JPS5777968 A JP S5777968A
Authority
JP
Japan
Prior art keywords
motor
stoppage
rotation
signal
lowers
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
JP15487680A
Other languages
Japanese (ja)
Inventor
Yasuaki Watabe
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.)
Victor Company of Japan Ltd
Nippon Victor KK
Original Assignee
Victor Company of Japan Ltd
Nippon Victor 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 Victor Company of Japan Ltd, Nippon Victor KK filed Critical Victor Company of Japan Ltd
Priority to JP15487680A priority Critical patent/JPS5777968A/en
Priority to FR8120592A priority patent/FR2493628A1/en
Priority to DE19813143590 priority patent/DE3143590A1/en
Priority to GB8133288A priority patent/GB2089150B/en
Priority to US06/318,879 priority patent/US4406981A/en
Publication of JPS5777968A publication Critical patent/JPS5777968A/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
    • G01P1/00—Details of instruments
    • G01P1/07—Indicating devices, e.g. for remote indication
    • G01P1/08—Arrangements of scales, pointers, lamps or acoustic indicators, e.g. in automobile speedometers
    • G01P1/10—Arrangements of scales, pointers, lamps or acoustic indicators, e.g. in automobile speedometers for indicating predetermined speeds
    • G01P1/103—Arrangements of scales, pointers, lamps or acoustic indicators, e.g. in automobile speedometers for indicating predetermined speeds by comparing the value of the measured signal with one or several reference values

Abstract

PURPOSE:To make it possible to detect the stoppage of the rotation of a motor just before the stoppage thereof highly precisely and surely and to simplify the circuit constitution, by detecting the stoppage of rotation of the motor when an averaged value of frequency signals proportional to the velocity of rotation of the motor falls below a threshold value. CONSTITUTION:When a signal is supplied to a terminal 5b at the time of stoppage of the rotation of the motor 1, a brake signal is taken out from a motor driving circuit 5. The rotational number of the motor 1 is thereby lowered, the output (a) of a frequency generator 2 is subjected to wave shaping 4 and, the zero level thereof being clamped in a diode D, it turns to be a signal c' through charging and discharging of a capacity C1. The terminal voltage of a capacity C2 lowers as the frequency of the signal (a) lowers. And when this voltage lowers below the threshold- value voltage (s) in a transistor Q, the transistor Q turns off, an H-level signal (d) of the output is supplied to a circuit 5 and the brake signal to the motor 1 is out. Accordingly, the stoppage of rotation of the motor 1 can surely be detected immediately before thereof.
JP15487680A 1980-11-04 1980-11-04 Detecting circuit for stoppage rotation of motor Pending JPS5777968A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP15487680A JPS5777968A (en) 1980-11-04 1980-11-04 Detecting circuit for stoppage rotation of motor
FR8120592A FR2493628A1 (en) 1980-11-04 1981-11-03 DEVICE FOR STOPPING THE ROTATION OF A MOTOR
DE19813143590 DE3143590A1 (en) 1980-11-04 1981-11-03 "DEVICE FOR STOPPING THE ROTATION OF AN ELECTRIC MOTOR"
GB8133288A GB2089150B (en) 1980-11-04 1981-11-04 Rotation stopping apparatus for a motor
US06/318,879 US4406981A (en) 1980-11-04 1981-11-06 Rotation stopping apparatus for a motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15487680A JPS5777968A (en) 1980-11-04 1980-11-04 Detecting circuit for stoppage rotation of motor

Publications (1)

Publication Number Publication Date
JPS5777968A true JPS5777968A (en) 1982-05-15

Family

ID=15593861

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15487680A Pending JPS5777968A (en) 1980-11-04 1980-11-04 Detecting circuit for stoppage rotation of motor

Country Status (1)

Country Link
JP (1) JPS5777968A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6438661A (en) * 1987-08-04 1989-02-08 Matsushita Electric Ind Co Ltd Method for detecting finish of drainage of machinery
JPS6439558A (en) * 1987-08-05 1989-02-09 Matsushita Electric Ind Co Ltd Water discharge end detecting method for equipment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6438661A (en) * 1987-08-04 1989-02-08 Matsushita Electric Ind Co Ltd Method for detecting finish of drainage of machinery
JPS6439558A (en) * 1987-08-05 1989-02-09 Matsushita Electric Ind Co Ltd Water discharge end detecting method for equipment
JPH0684977B2 (en) * 1987-08-05 1994-10-26 松下電器産業株式会社 Drainage end detection method for cleaning equipment

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