JPS5728273A - Zero adjusting circuit for automatic ri monitor system - Google Patents

Zero adjusting circuit for automatic ri monitor system

Info

Publication number
JPS5728273A
JPS5728273A JP10245680A JP10245680A JPS5728273A JP S5728273 A JPS5728273 A JP S5728273A JP 10245680 A JP10245680 A JP 10245680A JP 10245680 A JP10245680 A JP 10245680A JP S5728273 A JPS5728273 A JP S5728273A
Authority
JP
Japan
Prior art keywords
zero point
register
turned
switch
signal
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.)
Granted
Application number
JP10245680A
Other languages
Japanese (ja)
Other versions
JPS611710B2 (en
Inventor
Teruo Ikeda
Naoki Tateishi
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
Aloka 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 Aloka Co Ltd filed Critical Aloka Co Ltd
Priority to JP10245680A priority Critical patent/JPS5728273A/en
Publication of JPS5728273A publication Critical patent/JPS5728273A/en
Publication of JPS611710B2 publication Critical patent/JPS611710B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
    • G01T1/16—Measuring radiation intensity
    • G01T1/185—Measuring radiation intensity with ionisation chamber arrangements

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Molecular Biology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Measurement Of Radiation (AREA)

Abstract

PURPOSE:To perform accurate measurement of the amount of variation at all times by automatically updating the zero adjusting value at a specified interval, and adjusting the zero point of a detected signal by said zero point adjusting value. CONSTITUTION:Electric charges collected 12 in an ionization chamber 10 are converted to a voltage signal. ON and OFF operations of a switch 30 in a meter 14 is controlled by a switching signal from a zero point adjusting circuit 18. The output of an AD converter 16 is supplied to a register 36 when the switch 30 is turned OFF and supplied to a register 32 when the switch 30 is turned ON. The outputs of the registers 32 and 36 are operated 40, and the zero point is adjusted. When an FF 44 is inverted for a specified time by the output of a time 42 in a circuit 18, a contact 38 is turned OFF, and the supply of signal to the register 36 is stopped. When a signal is outputted Q from the FF 44, the switch 30 and the contact 34 are turned ON, and the detected signal under the zero checking state is supplied to the register 32, and the zero point adjusting value is updated.
JP10245680A 1980-07-28 1980-07-28 Zero adjusting circuit for automatic ri monitor system Granted JPS5728273A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10245680A JPS5728273A (en) 1980-07-28 1980-07-28 Zero adjusting circuit for automatic ri monitor system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10245680A JPS5728273A (en) 1980-07-28 1980-07-28 Zero adjusting circuit for automatic ri monitor system

Publications (2)

Publication Number Publication Date
JPS5728273A true JPS5728273A (en) 1982-02-15
JPS611710B2 JPS611710B2 (en) 1986-01-20

Family

ID=14327963

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10245680A Granted JPS5728273A (en) 1980-07-28 1980-07-28 Zero adjusting circuit for automatic ri monitor system

Country Status (1)

Country Link
JP (1) JPS5728273A (en)

Also Published As

Publication number Publication date
JPS611710B2 (en) 1986-01-20

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