JPS57101707A - Device for detecting moving substance - Google Patents

Device for detecting moving substance

Info

Publication number
JPS57101707A
JPS57101707A JP17926080A JP17926080A JPS57101707A JP S57101707 A JPS57101707 A JP S57101707A JP 17926080 A JP17926080 A JP 17926080A JP 17926080 A JP17926080 A JP 17926080A JP S57101707 A JPS57101707 A JP S57101707A
Authority
JP
Japan
Prior art keywords
signal
moving substance
output signal
difference
flip
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
JP17926080A
Other languages
Japanese (ja)
Inventor
Isao Hishikari
Yoshiaki Imazu
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.)
Chino Works Ltd
Original Assignee
Chino Works 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 Chino Works Ltd filed Critical Chino Works Ltd
Priority to JP17926080A priority Critical patent/JPS57101707A/en
Publication of JPS57101707A publication Critical patent/JPS57101707A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P13/00—Indicating or recording presence, absence, or direction, of movement

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Abstract

PURPOSE:To detect a moving substance with high accuracy by a device wherein a difference signal obtained from a pair of detectors is used to drive a flip- flop circuit. CONSTITUTION:Upon receiving radiant energy from a moving substance 1, a first detector 31 generates an output signal e1 and a second detector 32 generates an output signal e2 with a lag of short time. A difference of both the signals e1 and e2 is calculated by a subtractor 4 and thus obtained difference signal e3 is taken out. The difference signal e3 is differentiated by a differential circuit 5 to be converted into an output signal e4 including pulse signals with both negative and positive polarities. An RS flip-flop circuit 8 issues from its Q terminal and output signal e7 corresponding to detection of the moving substance and this signal can be taken out from an output terminal 9.
JP17926080A 1980-12-17 1980-12-17 Device for detecting moving substance Pending JPS57101707A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17926080A JPS57101707A (en) 1980-12-17 1980-12-17 Device for detecting moving substance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17926080A JPS57101707A (en) 1980-12-17 1980-12-17 Device for detecting moving substance

Publications (1)

Publication Number Publication Date
JPS57101707A true JPS57101707A (en) 1982-06-24

Family

ID=16062734

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17926080A Pending JPS57101707A (en) 1980-12-17 1980-12-17 Device for detecting moving substance

Country Status (1)

Country Link
JP (1) JPS57101707A (en)

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