JPS551570A - Moving object detector - Google Patents

Moving object detector

Info

Publication number
JPS551570A
JPS551570A JP7499378A JP7499378A JPS551570A JP S551570 A JPS551570 A JP S551570A JP 7499378 A JP7499378 A JP 7499378A JP 7499378 A JP7499378 A JP 7499378A JP S551570 A JPS551570 A JP S551570A
Authority
JP
Japan
Prior art keywords
signal
voltage
intruder
detection
doppler signal
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
JP7499378A
Other languages
Japanese (ja)
Inventor
Akimasa Tsuwa
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP7499378A priority Critical patent/JPS551570A/en
Publication of JPS551570A publication Critical patent/JPS551570A/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
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/40—Means for monitoring or calibrating

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

PURPOSE:To enable fault detection to be readily, rapidly and surely done through remote operation by temporarily superposing an AD voltage to the DC voltage for operating a microwave oscillator thereby producing an artificial Doppler signal. CONSTITUTION:In case when detection of moving objects is made as, e.g., an intruder detector for crime prevention and in order to check the presence or not of its fault, a switch 17 is changed over to the pulsation generating circuit 16 side, by which pulsating voltage is applied to a microwave solid state oscillator 15. Then, the oscillation output of the microwave solid state oscillator 15 is amplitude-modulated by this pulsating voltage and therefore even if no intruder exists in the detecting space, the output signal of a mixer 2 comes to have AC components, thus becoming the same as the Doppler signal by an intruder. Hence, by amplifying this AC signal in a low frequency amplifier circuit 7 and subjecting the similar signal processing to that of ordinary Doppler signal, the detection output may be obtained.
JP7499378A 1978-06-20 1978-06-20 Moving object detector Pending JPS551570A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7499378A JPS551570A (en) 1978-06-20 1978-06-20 Moving object detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7499378A JPS551570A (en) 1978-06-20 1978-06-20 Moving object detector

Publications (1)

Publication Number Publication Date
JPS551570A true JPS551570A (en) 1980-01-08

Family

ID=13563303

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7499378A Pending JPS551570A (en) 1978-06-20 1978-06-20 Moving object detector

Country Status (1)

Country Link
JP (1) JPS551570A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4698873A (en) * 1985-01-22 1987-10-13 Nissan Motor Company, Limited Extensible and contractible wiper arm assembly for windshield wiper
US5438943A (en) * 1992-10-13 1995-08-08 Juki Corporation Guard device for sewing machines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4698873A (en) * 1985-01-22 1987-10-13 Nissan Motor Company, Limited Extensible and contractible wiper arm assembly for windshield wiper
US5438943A (en) * 1992-10-13 1995-08-08 Juki Corporation Guard device for sewing machines

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