JPS57125819A - Peak and bottom detecting device - Google Patents

Peak and bottom detecting device

Info

Publication number
JPS57125819A
JPS57125819A JP1210781A JP1210781A JPS57125819A JP S57125819 A JPS57125819 A JP S57125819A JP 1210781 A JP1210781 A JP 1210781A JP 1210781 A JP1210781 A JP 1210781A JP S57125819 A JPS57125819 A JP S57125819A
Authority
JP
Japan
Prior art keywords
mode
peak
maximum
value
minimum
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
JP1210781A
Other languages
Japanese (ja)
Inventor
Osamu Sakura
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 JP1210781A priority Critical patent/JPS57125819A/en
Publication of JPS57125819A publication Critical patent/JPS57125819A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D7/00—Control of flow
    • G05D7/06—Control of flow characterised by the use of electric means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Measuring Volume Flow (AREA)

Abstract

PURPOSE:To obtain a device for detecting the peak and the bottom of a data input value continuously, by switching the measuring mode from the peak mode or the bottom mode to the bottom mode or the peak mode when the difference between the data input and a maximum or minimum value exceeds an external set value. CONSTITUTION:An operating part 3 compares a data input 10 with a maximum or minimum value of a maximum/minimum value updating storage part 2 in accordance with the peak or bottom mode of a mode storag part 1 and updates or holds the maximum or minimum value in accordance with the comparison result. A discriminating part 4 compares an external input value 16 with the difference between the data input 10 and the maximum or minimum value of the storage part 2 in the operating part 3; and when the absolute value of this difference becomes larger than the external input value 16, the discriminating part 4 controls the mode storage part 1 to switch the measuring mode from the peak mode or the bottom mode to the bottom mode or the peak mode. Thus, the maximum and the minimum of data whose maximum and minimum are inputted periodically are obtained with high precision.
JP1210781A 1981-01-29 1981-01-29 Peak and bottom detecting device Pending JPS57125819A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1210781A JPS57125819A (en) 1981-01-29 1981-01-29 Peak and bottom detecting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1210781A JPS57125819A (en) 1981-01-29 1981-01-29 Peak and bottom detecting device

Publications (1)

Publication Number Publication Date
JPS57125819A true JPS57125819A (en) 1982-08-05

Family

ID=11796338

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1210781A Pending JPS57125819A (en) 1981-01-29 1981-01-29 Peak and bottom detecting device

Country Status (1)

Country Link
JP (1) JPS57125819A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6418019A (en) * 1987-07-13 1989-01-20 Takenaka Komuten Co Flow rate measuring apparatus for upright drain pipe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6418019A (en) * 1987-07-13 1989-01-20 Takenaka Komuten Co Flow rate measuring apparatus for upright drain pipe

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