SE8500681D0 - REFLECTION TYPE OBJECT DETECTING DEVICE - Google Patents
REFLECTION TYPE OBJECT DETECTING DEVICEInfo
- Publication number
- SE8500681D0 SE8500681D0 SE8500681A SE8500681A SE8500681D0 SE 8500681 D0 SE8500681 D0 SE 8500681D0 SE 8500681 A SE8500681 A SE 8500681A SE 8500681 A SE8500681 A SE 8500681A SE 8500681 D0 SE8500681 D0 SE 8500681D0
- Authority
- SE
- Sweden
- Prior art keywords
- waves
- detected
- wave
- reflected
- same
- Prior art date
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
- G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
- G01S7/52003—Techniques for enhancing spatial resolution of targets
-
- 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
- G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
- G01S7/523—Details of pulse systems
- G01S7/526—Receivers
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
The distance of an object is measured by using and measuring the time at which reflected waves 20b, 30b are detected. The waves are observed from the instant at which direct waves might possibly appear. If a wave is detected after the detection of a previous wave has ended, the measurement is repeated with a sensitivity updated to a higher level and, when the same wave is detected, this is considered as the reflected wave. If it is observed that the same waves are reflected by the same object with several different sensitivities, the value corresponding to the highest sensitivity is adopted. The transmitted level of the ultrasonic waves is regulated by using the mechanical properties of an ultrasonic transmitter through adjustments to the number of pulses or frequency of a binary signal which actuates the ultrasonic transmitter. If either the reflected waves or the direct waves are not detected at the predetermined time, the device is taken to be faulty. Application to the detection of objects from motor vehicles. <IMAGE>
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP59060335A JPS60203876A (en) | 1984-03-28 | 1984-03-28 | Reflection type substance detector |
JP59060336A JPS60203877A (en) | 1984-03-28 | 1984-03-28 | Reflection type substance detector |
JP59060338A JPS60203879A (en) | 1984-03-28 | 1984-03-28 | Reflection type substance detector |
JP59060337A JPS60203878A (en) | 1984-03-28 | 1984-03-28 | Reflection type substance detector |
Publications (3)
Publication Number | Publication Date |
---|---|
SE8500681D0 true SE8500681D0 (en) | 1985-02-14 |
SE8500681L SE8500681L (en) | 1985-09-29 |
SE461060B SE461060B (en) | 1989-12-18 |
Family
ID=27463899
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8500681A SE461060B (en) | 1984-03-28 | 1985-02-14 | REFLECTION TYPE OBJECT DETECTION DEVICE |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR2562265B1 (en) |
SE (1) | SE461060B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3937585C2 (en) * | 1989-11-11 | 1998-11-05 | Teves Gmbh Alfred | Distance measuring device |
DE102014111127A1 (en) | 2014-08-05 | 2016-02-11 | Valeo Schalter Und Sensoren Gmbh | Method for generating an environment map and driver assistance system |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3474400A (en) * | 1965-03-31 | 1969-10-21 | Gen Signal Corp | Sonic presence detection system and method |
FR2400201A1 (en) * | 1977-08-08 | 1979-03-09 | Siderurgie Fse Inst Rech | Automatically operating ultrasonic scanner - uses spectral sweep of probe sensitivities to detect interior discontinuities and responds to range of values |
JPS5784377A (en) * | 1980-11-14 | 1982-05-26 | Nippon Denso Co Ltd | Device for detecting obstacle |
US4542489A (en) * | 1982-05-18 | 1985-09-17 | Aisin Seiki Kabushiki Kaisha | Object detecting system of reflection type |
-
1985
- 1985-02-14 SE SE8500681A patent/SE461060B/en not_active IP Right Cessation
- 1985-03-28 FR FR8504680A patent/FR2562265B1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
SE8500681L (en) | 1985-09-29 |
SE461060B (en) | 1989-12-18 |
FR2562265A1 (en) | 1985-10-04 |
FR2562265B1 (en) | 1989-12-01 |
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