JPS54159282A - Analog signal sampling system of spectrophotometer - Google Patents

Analog signal sampling system of spectrophotometer

Info

Publication number
JPS54159282A
JPS54159282A JP6767378A JP6767378A JPS54159282A JP S54159282 A JPS54159282 A JP S54159282A JP 6767378 A JP6767378 A JP 6767378A JP 6767378 A JP6767378 A JP 6767378A JP S54159282 A JPS54159282 A JP S54159282A
Authority
JP
Japan
Prior art keywords
signal
luminous flux
signals
converter
timing
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
JP6767378A
Other languages
Japanese (ja)
Inventor
Yohei Takashima
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 JP6767378A priority Critical patent/JPS54159282A/en
Publication of JPS54159282A publication Critical patent/JPS54159282A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/10—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void
    • G01J1/16—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void using electric radiation detectors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Spectrometry And Color Measurement (AREA)

Abstract

PURPOSE:To make possible taking of plural signals with one AD converter by making the times of the AD conversion of zero signal less than the normal times, leading another signal to the AD converter with an analog switch in place, and taking this in a processing unit. CONSTITUTION:Luminous flux LB of single light color from a spectroscope is divided to a reference side luminous flux RB and sample side luminous flux SB by a chopper 1. After both luminous fluxes pass through respective samples 14, 15, they are combined to one luminous flux by a half mirror 6. The luminous flux is then converted to an electric signal in a photoelectric transducer 7. The signal is converted to a digital signal in an AD converter 9 through an amplifier 8 and analog switch 21 and is taken in a processing unit 10. At this time, the signals from the photoelectric transducer 7 and temperature detector 11 are alternately led to the AD converter 9 by dividing the timing signal TS3 for zero signal out of 3 kinds of timing signals from a timing generator 3 to two kinds of timing signals TS31, TS32 by a pulse divider 22 and at the same time changing over the analog switch 21 by one of said signals.
JP6767378A 1978-06-07 1978-06-07 Analog signal sampling system of spectrophotometer Pending JPS54159282A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6767378A JPS54159282A (en) 1978-06-07 1978-06-07 Analog signal sampling system of spectrophotometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6767378A JPS54159282A (en) 1978-06-07 1978-06-07 Analog signal sampling system of spectrophotometer

Publications (1)

Publication Number Publication Date
JPS54159282A true JPS54159282A (en) 1979-12-15

Family

ID=13351744

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6767378A Pending JPS54159282A (en) 1978-06-07 1978-06-07 Analog signal sampling system of spectrophotometer

Country Status (1)

Country Link
JP (1) JPS54159282A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56122936A (en) * 1980-02-29 1981-09-26 Shimadzu Corp Reflection factor measuring device
JPS62157536A (en) * 1985-12-30 1987-07-13 Japan Spectroscopic Co Signal detection method for spectrophotometer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56122936A (en) * 1980-02-29 1981-09-26 Shimadzu Corp Reflection factor measuring device
JPS6128292B2 (en) * 1980-02-29 1986-06-30 Shimadzu Corp
JPS62157536A (en) * 1985-12-30 1987-07-13 Japan Spectroscopic Co Signal detection method for spectrophotometer

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