KR950019733A - Metal piece detection device - Google Patents

Metal piece detection device Download PDF

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Publication number
KR950019733A
KR950019733A KR1019930031115A KR930031115A KR950019733A KR 950019733 A KR950019733 A KR 950019733A KR 1019930031115 A KR1019930031115 A KR 1019930031115A KR 930031115 A KR930031115 A KR 930031115A KR 950019733 A KR950019733 A KR 950019733A
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KR
South Korea
Prior art keywords
converter
coil
receiver coil
rom
supplying
Prior art date
Application number
KR1019930031115A
Other languages
Korean (ko)
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KR970010984B1 (en
Inventor
엄이호
Original Assignee
조말수
포항종합제철 주식회사
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Application filed by 조말수, 포항종합제철 주식회사 filed Critical 조말수
Priority to KR1019930031115A priority Critical patent/KR970010984B1/en
Publication of KR950019733A publication Critical patent/KR950019733A/en
Application granted granted Critical
Publication of KR970010984B1 publication Critical patent/KR970010984B1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
    • G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Abstract

원료 이송용 콘베어 상에서 전기장의 유도현상을 이용하는 금속편 검출장치는, 클럭신호를 카운트하여 롬(12)에 어드레스 정보를 공급하는 카운터(11)와, 상기 롬(12)의 로직 출력에 따라 제너레이터 코일(14)에 교호전류를 공급하는 H 브릿지(13)와, 상기 제너레이터 코일(14)과 콘베어(16)를 사이에 두고 대향배치되며, 제너레이터 코일(14)에 의해 형성된 자장을 검출하는 리시버코일(17)과, 상기 리시버 코일(17)에 유기된 전압을 진폭 변동성분으로 차동중폭하는 차동앰프 1(18)와, 상기 리시버 코일(17)에 유기된 전압을 펄스폭 변동성분으로 차동 증폭하는 차동앰프 2(19)와, 상기 차동앰프 1, 2(18, 19)의 출력을 스위칭 선택하여 A/D콘버터(24)로 공급하는 멀티플렉서(22)와,상기 A/D콘버터(24)로부터의 데이터를 처리하여 디스플레이(26)에 금속편유무를 표시하는 마이콤(10)을 포함한다.The metal piece detection device using the induction phenomenon of the electric field on the conveyor for feeding the raw material includes a counter 11 for counting a clock signal and supplying address information to the ROM 12, and a generator coil according to the logic output of the ROM 12. An H bridge 13 for supplying an alternating current to the 14 and a receiver coil 17 arranged to face each other with the generator coil 14 and the conveyor 16 interposed therebetween to detect a magnetic field formed by the generator coil 14. Differential amplifier 1 18 for differentially amplifying the voltage induced in the receiver coil 17 with an amplitude variation component, and a differential amplifier for differentially amplifying the voltage induced in the receiver coil 17 with a pulse width variation component. A multiplexer 22 for switching the output of the differential amplifiers 1 and 2 (18, 19) to the A / D converter 24 and supplying data to the A / D converter 24, and data from the A / D converter 24. Processing to display the presence of metal pieces on the display 26 It includes 10.

Description

금속편검출장치Metal piece detection device

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명 장치의 블록 다이어그램,1 is a block diagram of an apparatus of the present invention,

제2도는 제1도의 H브릿지에 대한 상세한 회로구성도,2 is a detailed circuit diagram of the H bridge of FIG.

제3도는 제1도의 차동 및 프리앰프에 대한 상세한 회로구성도.3 is a detailed circuit diagram of the differential and preamplifier of FIG.

Claims (1)

클럭신호를 카운트하여 롬(12)에 어드레스 정보를 공급하는 카운터(11)와, 상기 롬(12)의 로직 출력에 따라 제너레이터 코일(14)에 교호전류를 공급하는 H 브릿지(13)와, 상기 제너레이터 코일(14)과 콘베어(16)를 사이에 두고 대향배치되며, 제너레이터 코일(14)에 의해 형성된 자장을 검출하는 리시버 코일(17)과, 상기 리시버 코일(17)에 유기된 전압을 진폭 변동성분으로 차동증폭하는 차동앰프 1(18)와, 상기 리시버 코일(17)에 유기된 전압을 펄스폭 변동성분으로 차동 증폭하는 차동앰프 2(19)와, 상기 차동앰프 1, 2(18, 19)의 출력을 스위칭 선택하여 A/D 콘버터(24)로 공급하는 멀티플렉서(22)와, 상기 A/D 콘버터(24)로부터의 데이터를 처리하여 디스플레이(26)에 금속편유무를 표시하는 마이콤 (10)을 포함하는 것을 특징으로 하는 금속편 검출장치.A counter 11 for counting a clock signal and supplying address information to the ROM 12, an H bridge 13 for supplying alternating current to the generator coil 14 in accordance with the logic output of the ROM 12, and The generator coil 14 and the conveyor 16 are disposed to face each other, and the receiver coil 17 which detects the magnetic field formed by the generator coil 14 and the voltage induced in the receiver coil 17 are amplitude fluctuated. A differential amplifier 1 (18) differentially amplified by a component, a differential amplifier 2 (19) differentially amplifying a voltage induced by the receiver coil 17 with a pulse width variable component, and the differential amplifiers 1, 2 (18, 19). A multiplexer 22 for switching and outputting the output of the A / D converter 24 to the A / D converter 24 and a microcomputer 10 for processing data from the A / D converter 24 to display the presence or absence of metal pieces on the display 26. Metal piece detection apparatus comprising a). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930031115A 1993-12-30 1993-12-30 Metal specimen detecting apparatus KR970010984B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930031115A KR970010984B1 (en) 1993-12-30 1993-12-30 Metal specimen detecting apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930031115A KR970010984B1 (en) 1993-12-30 1993-12-30 Metal specimen detecting apparatus

Publications (2)

Publication Number Publication Date
KR950019733A true KR950019733A (en) 1995-07-24
KR970010984B1 KR970010984B1 (en) 1997-07-05

Family

ID=19374125

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930031115A KR970010984B1 (en) 1993-12-30 1993-12-30 Metal specimen detecting apparatus

Country Status (1)

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KR (1) KR970010984B1 (en)

Also Published As

Publication number Publication date
KR970010984B1 (en) 1997-07-05

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