JPH0350663U - - Google Patents
Info
- Publication number
- JPH0350663U JPH0350663U JP11065689U JP11065689U JPH0350663U JP H0350663 U JPH0350663 U JP H0350663U JP 11065689 U JP11065689 U JP 11065689U JP 11065689 U JP11065689 U JP 11065689U JP H0350663 U JPH0350663 U JP H0350663U
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- battery
- ultrasonic sensor
- circuit
- sound waves
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 230000010355 oscillation Effects 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 210000005069 ears Anatomy 0.000 claims 1
- 238000007599 discharging Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
Landscapes
- Measurement Of Current Or Voltage (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Domestic Plumbing Installations (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11065689U JPH0350663U (cs) | 1989-09-21 | 1989-09-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11065689U JPH0350663U (cs) | 1989-09-21 | 1989-09-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0350663U true JPH0350663U (cs) | 1991-05-16 |
Family
ID=31659181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11065689U Pending JPH0350663U (cs) | 1989-09-21 | 1989-09-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0350663U (cs) |
-
1989
- 1989-09-21 JP JP11065689U patent/JPH0350663U/ja active Pending
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