JPS5686374A - Short-distance detection sensor - Google Patents

Short-distance detection sensor

Info

Publication number
JPS5686374A
JPS5686374A JP16308179A JP16308179A JPS5686374A JP S5686374 A JPS5686374 A JP S5686374A JP 16308179 A JP16308179 A JP 16308179A JP 16308179 A JP16308179 A JP 16308179A JP S5686374 A JPS5686374 A JP S5686374A
Authority
JP
Japan
Prior art keywords
signal
low
voltage
quenching
oscillation 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.)
Granted
Application number
JP16308179A
Other languages
Japanese (ja)
Other versions
JPS6256989B2 (en
Inventor
Keiichi Mizuguchi
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric 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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP16308179A priority Critical patent/JPS5686374A/en
Publication of JPS5686374A publication Critical patent/JPS5686374A/en
Publication of JPS6256989B2 publication Critical patent/JPS6256989B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Geophysics And Detection Of Objects (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

PURPOSE: To increase the working sensitivity, by setting a quenching oscillation circuit at the point where the oscillation region shifts to the nonoscillation region based on the time constant of an integral network connected to a collector of a transistor in a quenching oscillation circuit.
CONSTITUTION: A signal voltage of a reception input received at the antenna 1 is amplified by the buffer amplifier 7 and then mixed with the quenching output voltage at the quenching oscillation circuit 8 to be converted into the low-frequency output through the low-pass filter 9. This low-frequency signal is amplified through the low-frequency amplifier 3. As this output includes the noise, the signal is discriminated from the noise through the band pass filter 4. The signal component selected through the filter 4 is converted into the DC voltage in correspondence to the amplitude of the signal component by the signal level discrimination circuit 5. In case the DC voltage level is higher than the set value, the signal is regarded normal. Then the normal signal is displayed on the display unit 6.
COPYRIGHT: (C)1981,JPO&Japio
JP16308179A 1979-12-15 1979-12-15 Short-distance detection sensor Granted JPS5686374A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16308179A JPS5686374A (en) 1979-12-15 1979-12-15 Short-distance detection sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16308179A JPS5686374A (en) 1979-12-15 1979-12-15 Short-distance detection sensor

Publications (2)

Publication Number Publication Date
JPS5686374A true JPS5686374A (en) 1981-07-14
JPS6256989B2 JPS6256989B2 (en) 1987-11-28

Family

ID=15766814

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16308179A Granted JPS5686374A (en) 1979-12-15 1979-12-15 Short-distance detection sensor

Country Status (1)

Country Link
JP (1) JPS5686374A (en)

Also Published As

Publication number Publication date
JPS6256989B2 (en) 1987-11-28

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