JPS6443785A - Ultrasonic sensor - Google Patents
Ultrasonic sensorInfo
- Publication number
- JPS6443785A JPS6443785A JP62200344A JP20034487A JPS6443785A JP S6443785 A JPS6443785 A JP S6443785A JP 62200344 A JP62200344 A JP 62200344A JP 20034487 A JP20034487 A JP 20034487A JP S6443785 A JPS6443785 A JP S6443785A
- Authority
- JP
- Japan
- Prior art keywords
- outputted
- detected
- signal
- ultrasonic wave
- moving body
- 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
Links
Landscapes
- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
- Geophysics And Detection Of Objects (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
PURPOSE:To output a prescribed detection signal only when a body to be detected is a moving body by detecting whether or not the body is the moving body from variation in the reception time interval of a reflected light from the body to be detected. CONSTITUTION:If the body to be detected enters a sensing range A while an ultrasonic wave from an oscillation-side vibrator 3 is outputted into the sensing range A through the operation of an ultrasonic wave oscillator 1, the reflected wave from the body is inputted to a reception-side vibrator 4. Then the reflected wave is amplified 5 and then passed through a limiter 7 and an envelope detector 8 to remove its ultrasonic wave component. A reflected wave signal SG4 outputted by the envelope detector 8 is integrated by an integrator 9 and outputted as an integral signal SG5 to a modulation detector 11. The modulation detector 11 compares the input integral signal SC5 with a last input integral signal SG5 in each period C. Then when their difference is detected, it is decided that the body is the moving body and a detection signal SG6 is outputted to a multivibrator 12.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62200344A JPS6443785A (en) | 1987-08-11 | 1987-08-11 | Ultrasonic sensor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62200344A JPS6443785A (en) | 1987-08-11 | 1987-08-11 | Ultrasonic sensor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6443785A true JPS6443785A (en) | 1989-02-16 |
Family
ID=16422728
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62200344A Pending JPS6443785A (en) | 1987-08-11 | 1987-08-11 | Ultrasonic sensor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6443785A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009090696A1 (en) * | 2008-01-16 | 2009-07-23 | Mitsubishi Electric Corporation | Dynamic obstacle judgment device |
-
1987
- 1987-08-11 JP JP62200344A patent/JPS6443785A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009090696A1 (en) * | 2008-01-16 | 2009-07-23 | Mitsubishi Electric Corporation | Dynamic obstacle judgment device |
US8498958B2 (en) | 2008-01-16 | 2013-07-30 | Mitsubishi Electric Corporation | Moving obstacle deciding apparatus and method |
JP5627240B2 (en) * | 2008-01-16 | 2014-11-19 | 三菱電機株式会社 | Dynamic obstacle judgment device |
DE112008003613B4 (en) * | 2008-01-16 | 2015-05-13 | Mitsubishi Electric Corp. | Moving obstacle deciding device |
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