JPS5686374A - Short-distance detection sensor - Google Patents
Short-distance detection sensorInfo
- 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
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
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) |
-
1979
- 1979-12-15 JP JP16308179A patent/JPS5686374A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6256989B2 (en) | 1987-11-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS55110974A (en) | Meteorological radar apparatus | |
JPS56665A (en) | Protective device of ground speed radar for vehicle | |
JPS56110360A (en) | Muting circuit of am stereo receiver | |
JPS56138340A (en) | Reception signal level detecting system for superregenerative receiver | |
JPS5686374A (en) | Short-distance detection sensor | |
JPS54139417A (en) | Interpolation receiving devices at voice short break time | |
JPS57169633A (en) | Detector for knocking oscillation of engine | |
JPS5595860A (en) | Ultrasonic flaw detector | |
JPS57170617A (en) | Receiver | |
JPS57164605A (en) | Amplifier | |
JPS55113964A (en) | Electric field intensity indicator | |
JPS55149878A (en) | Level detector | |
JPS54128601A (en) | Radio unit | |
JPS57136825A (en) | Super-regenerative receiving system | |
JPS558657A (en) | Signal delay circuit | |
JPS5631656A (en) | S/n instrument and s/n measuring method | |
JPS55156416A (en) | Meter circuit for indicating intensity of received electric field | |
JPS5440016A (en) | Fail soft receiving high frequency amplifier | |
JPS57201324A (en) | Auto-slice circuit | |
JPS56110347A (en) | Am receiver | |
JPS5592081A (en) | Adjustment unit of television receiver | |
JPS5692466A (en) | Electrostatic capacity detector | |
JPS5550748A (en) | Signal meter driving circuit for receiver | |
JPS5554463A (en) | Measuring instrument for ratio of noise power to carrier | |
JPS57200826A (en) | Knocking detecting device |