JPH0147722B2 - - Google Patents
Info
- Publication number
- JPH0147722B2 JPH0147722B2 JP6995781A JP6995781A JPH0147722B2 JP H0147722 B2 JPH0147722 B2 JP H0147722B2 JP 6995781 A JP6995781 A JP 6995781A JP 6995781 A JP6995781 A JP 6995781A JP H0147722 B2 JPH0147722 B2 JP H0147722B2
- Authority
- JP
- Japan
- Prior art keywords
- distance
- road surface
- signal
- circuit
- vehicle
- 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.)
- Expired
Links
- 230000002159 abnormal effect Effects 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/88—Sonar systems specially adapted for specific applications
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6995781A JPS57184912A (en) | 1981-05-08 | 1981-05-08 | Detector for condition of road surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6995781A JPS57184912A (en) | 1981-05-08 | 1981-05-08 | Detector for condition of road surface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57184912A JPS57184912A (en) | 1982-11-13 |
| JPH0147722B2 true JPH0147722B2 (enrdf_load_stackoverflow) | 1989-10-16 |
Family
ID=13417636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6995781A Granted JPS57184912A (en) | 1981-05-08 | 1981-05-08 | Detector for condition of road surface |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57184912A (enrdf_load_stackoverflow) |
-
1981
- 1981-05-08 JP JP6995781A patent/JPS57184912A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57184912A (en) | 1982-11-13 |