JPH03285167A - Automatic power supply on/off circuit of biochemical automatic analyzer - Google Patents

Automatic power supply on/off circuit of biochemical automatic analyzer

Info

Publication number
JPH03285167A
JPH03285167A JP8487890A JP8487890A JPH03285167A JP H03285167 A JPH03285167 A JP H03285167A JP 8487890 A JP8487890 A JP 8487890A JP 8487890 A JP8487890 A JP 8487890A JP H03285167 A JPH03285167 A JP H03285167A
Authority
JP
Japan
Prior art keywords
power supply
signal
automatic
switch
circuit
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
JP8487890A
Other languages
Japanese (ja)
Inventor
Takashi Kida
Hiroyasu Uchida
Atsushi Maeda
Nobuo Suzuki
Yoshimitsu Shibano
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 JP8487890A priority Critical patent/JPH03285167A/en
Publication of JPH03285167A publication Critical patent/JPH03285167A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N35/00Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
    • G01N35/00584Control arrangements for automatic analysers
    • G01N35/00594Quality control, including calibration or testing of components of the analyser
    • G01N35/00712Automatic status testing, e.g. at start-up or periodic

Abstract

PURPOSE: To obtain high reliability by turning a power supply switch OFF only when both of the AND signal of the contact signal of a time switch and the OFF signal from a CPU and the automatic OFF signal '1' level signal from the CPU are active.
CONSTITUTION: A time switch 210 always receiving the supply of power from an AC power supply 100 outputs an ON signal 211 to a power supply ON/OFF drive means 230 when set automatic power supply ON time arrives and outputs an OFF signal 212 to a power supply OFF control means 220 when OFF time arrives. The drive means 230 receives the power supply ON input signal 11 and turns a power supply switch 300 ON and turns the switch 300 OFF on the basis of the OFF input signal 221 from the control means 220. The power supply OFF control means 200 receives the AND signal of the OFF signal 212 from the time switch 210 and the power supply OFF signal 501 from a CPU 500 and sends the OFF signal 221 to the drive means 230 only when both signals become an OFF state. By this method, even when there is erroneous operation in one of both signals, the erroneous cutting of the power supply is not generated and high reliability can be obtained.
COPYRIGHT: (C)1991,JPO&Japio
JP8487890A 1990-04-02 1990-04-02 Automatic power supply on/off circuit of biochemical automatic analyzer Pending JPH03285167A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8487890A JPH03285167A (en) 1990-04-02 1990-04-02 Automatic power supply on/off circuit of biochemical automatic analyzer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8487890A JPH03285167A (en) 1990-04-02 1990-04-02 Automatic power supply on/off circuit of biochemical automatic analyzer

Publications (1)

Publication Number Publication Date
JPH03285167A true JPH03285167A (en) 1991-12-16

Family

ID=13843040

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8487890A Pending JPH03285167A (en) 1990-04-02 1990-04-02 Automatic power supply on/off circuit of biochemical automatic analyzer

Country Status (1)

Country Link
JP (1) JPH03285167A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013171444A (en) * 2012-02-21 2013-09-02 Shimadzu Corp Analyzing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013171444A (en) * 2012-02-21 2013-09-02 Shimadzu Corp Analyzing device

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