JPS5770475A - Automatic ri monitor system - Google Patents

Automatic ri monitor system

Info

Publication number
JPS5770475A
JPS5770475A JP14635380A JP14635380A JPS5770475A JP S5770475 A JPS5770475 A JP S5770475A JP 14635380 A JP14635380 A JP 14635380A JP 14635380 A JP14635380 A JP 14635380A JP S5770475 A JPS5770475 A JP S5770475A
Authority
JP
Japan
Prior art keywords
sensitivity
zero point
register
zero
comparators
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
JP14635380A
Other languages
Japanese (ja)
Other versions
JPS611712B2 (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 JP14635380A priority Critical patent/JPS5770475A/en
Publication of JPS5770475A publication Critical patent/JPS5770475A/en
Publication of JPS611712B2 publication Critical patent/JPS611712B2/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 form a device maintaining always a normal operation state by correcting zero adjustment and sensitivity by using switching automatically at predetermined times, a reference ray source control device and comparators. CONSTITUTION:The electric charge gathered at the current collecting electrode 12 of an ionization chamber 10 according to radiation dose is converted to voltage by an electrometer 14, and the voltage is digitized by an A/D converter 16. The digital signal is recorded and displayed with a display device 20, a printer 22 and an integrator 24 via a zero point adjusting circuit 100 and a sensitivity correctinng circuit 200. Zero point adjustment and sensitivity correction are carried out by driving flip- flops 44, 68 by the signal of a timer 42 and changing over switches. Select switches 30, 40 are turned on to input the zero adjustment output to a register 32, by which zero point is adjusted. A sensitivity correction value is outputted by the value of a register 58 obtained by irradiation with a reference ray source 46 and the reference value of a register 60 by opening a shutter 50. Zero point as well as the upper and lower limit values of sensitivity are applied to comparators 78, 80, and an alarm is emitted when out of these values. Thereby, the normal operation is continued.
JP14635380A 1980-10-21 1980-10-21 Automatic ri monitor system Granted JPS5770475A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14635380A JPS5770475A (en) 1980-10-21 1980-10-21 Automatic ri monitor system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14635380A JPS5770475A (en) 1980-10-21 1980-10-21 Automatic ri monitor system

Publications (2)

Publication Number Publication Date
JPS5770475A true JPS5770475A (en) 1982-04-30
JPS611712B2 JPS611712B2 (en) 1986-01-20

Family

ID=15405787

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14635380A Granted JPS5770475A (en) 1980-10-21 1980-10-21 Automatic ri monitor system

Country Status (1)

Country Link
JP (1) JPS5770475A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104122575A (en) * 2014-07-14 2014-10-29 中国原子能科学研究院 Automatic measurement system and method of extrapolation ionization chamber

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62200048U (en) * 1986-06-12 1987-12-19

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104122575A (en) * 2014-07-14 2014-10-29 中国原子能科学研究院 Automatic measurement system and method of extrapolation ionization chamber

Also Published As

Publication number Publication date
JPS611712B2 (en) 1986-01-20

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