JPS54119282A - Target detector - Google Patents

Target detector

Info

Publication number
JPS54119282A
JPS54119282A JP2678478A JP2678478A JPS54119282A JP S54119282 A JPS54119282 A JP S54119282A JP 2678478 A JP2678478 A JP 2678478A JP 2678478 A JP2678478 A JP 2678478A JP S54119282 A JPS54119282 A JP S54119282A
Authority
JP
Japan
Prior art keywords
target
infrared rays
background
voltage
detection
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
JP2678478A
Other languages
Japanese (ja)
Inventor
Masahiko Tomita
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP2678478A priority Critical patent/JPS54119282A/en
Publication of JPS54119282A publication Critical patent/JPS54119282A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

PURPOSE:To make possible sure detection irrespective of the change in background condition by storing the infrared rays by the background of the target in a memory circuit and automatically setting the target detection level according to the target background. CONSTITUTION:The infrared rays from the target direction enters an infrared ray detector 13 via chopper 12 and are made to the voltage proportional to logarithmic functions by a detector 16 and a logarithmic amplifier 17. This voltage is stored in a memory circuit 18 based on the memory command signal applied prior to the observation of the target and is subjected to subtraction processing in a subtractor 19 together with the output of the amplifier 17 having detected the infrared rays from the target as a voltage. When the target infrared rays become more than the specified magnification of the background infrared rays, a level judgement circuit 20 judges the same as the target and the incident infrared rays are processes in a signal processing circuit 15. Hence, the target detection level is automatically set according to the target background changing with days and the detection of the target may be surely accomplished.
JP2678478A 1978-03-09 1978-03-09 Target detector Pending JPS54119282A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2678478A JPS54119282A (en) 1978-03-09 1978-03-09 Target detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2678478A JPS54119282A (en) 1978-03-09 1978-03-09 Target detector

Publications (1)

Publication Number Publication Date
JPS54119282A true JPS54119282A (en) 1979-09-17

Family

ID=12202933

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2678478A Pending JPS54119282A (en) 1978-03-09 1978-03-09 Target detector

Country Status (1)

Country Link
JP (1) JPS54119282A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5026989A (en) * 1985-10-07 1991-06-25 Nordson Corporation System for monitoring material dispensed onto a substrate
US5582663A (en) * 1993-09-07 1996-12-10 Nordson Corporation Infrared adhesive bead detector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5026989A (en) * 1985-10-07 1991-06-25 Nordson Corporation System for monitoring material dispensed onto a substrate
US5582663A (en) * 1993-09-07 1996-12-10 Nordson Corporation Infrared adhesive bead detector

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