JPS5714191A - Method for counting number of balls for cleaning - Google Patents

Method for counting number of balls for cleaning

Info

Publication number
JPS5714191A
JPS5714191A JP8970680A JP8970680A JPS5714191A JP S5714191 A JPS5714191 A JP S5714191A JP 8970680 A JP8970680 A JP 8970680A JP 8970680 A JP8970680 A JP 8970680A JP S5714191 A JPS5714191 A JP S5714191A
Authority
JP
Japan
Prior art keywords
voltage
flow path
ball
balls
magnetic
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
JP8970680A
Other languages
Japanese (ja)
Inventor
Isao Okochi
Sankichi Takahashi
Katsumoto Ootake
Yasuaki Mukai
Takuya Sasaki
Masahiko Miyai
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP8970680A priority Critical patent/JPS5714191A/en
Publication of JPS5714191A publication Critical patent/JPS5714191A/en
Pending legal-status Critical Current

Links

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  • Cleaning In General (AREA)

Abstract

PURPOSE: To count the number of balls by the induction voltage produced by the difference of conductivity caused by the balls, etc. which cut across a line of magnetic induction, by providing a magnetic field to cut a magnetic flux in the flow path.
CONSTITUTION: The magnetic induction field which cuts a flow path 1 in the sectional direction is provided in a flow path 1 by an electromagnet 3, and electrodes 4 are provided to the wall of the flow path in the positions they go straight to the magnetic field, confronting with each other. When a ball 10 crosses over the magnetic induction field, the voltage induced is changed, due to the difference of conductivity. Therefore, if the ball is an insulator, the length the magnetic flux crosses over the magnetic field is extended to decrease the inducted voltage. The processor 5 to detect the induced voltage discriminates high and low relation between the voltage at the time the sea water passes through and the one at the time the ball passes through, and counts the latter only. The induced voltage becomes large, if the conductivity of the ball is larger than that of the fluid flowing through the flow path 1. The number of balls passing through can be counted by analyzing the change of voltage in the processor 5.
COPYRIGHT: (C)1982,JPO&Japio
JP8970680A 1980-06-30 1980-06-30 Method for counting number of balls for cleaning Pending JPS5714191A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8970680A JPS5714191A (en) 1980-06-30 1980-06-30 Method for counting number of balls for cleaning

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8970680A JPS5714191A (en) 1980-06-30 1980-06-30 Method for counting number of balls for cleaning

Publications (1)

Publication Number Publication Date
JPS5714191A true JPS5714191A (en) 1982-01-25

Family

ID=13978214

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8970680A Pending JPS5714191A (en) 1980-06-30 1980-06-30 Method for counting number of balls for cleaning

Country Status (1)

Country Link
JP (1) JPS5714191A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102628659A (en) * 2012-04-09 2012-08-08 清华大学 Rubber ball washing monitoring device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102628659A (en) * 2012-04-09 2012-08-08 清华大学 Rubber ball washing monitoring device

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