JPS63132306U - - Google Patents
Info
- Publication number
- JPS63132306U JPS63132306U JP1362088U JP1362088U JPS63132306U JP S63132306 U JPS63132306 U JP S63132306U JP 1362088 U JP1362088 U JP 1362088U JP 1362088 U JP1362088 U JP 1362088U JP S63132306 U JPS63132306 U JP S63132306U
- Authority
- JP
- Japan
- Prior art keywords
- tunnel
- sensor
- cross
- ultrasonic generator
- distance
- 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
- 238000009412 basement excavation Methods 0.000 claims 2
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1362088U JPS63132306U (fi) | 1988-02-05 | 1988-02-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1362088U JPS63132306U (fi) | 1988-02-05 | 1988-02-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63132306U true JPS63132306U (fi) | 1988-08-30 |
Family
ID=30802852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1362088U Pending JPS63132306U (fi) | 1988-02-05 | 1988-02-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63132306U (fi) |
-
1988
- 1988-02-05 JP JP1362088U patent/JPS63132306U/ja active Pending