JPH0432994B2 - - Google Patents
Info
- Publication number
- JPH0432994B2 JPH0432994B2 JP14367984A JP14367984A JPH0432994B2 JP H0432994 B2 JPH0432994 B2 JP H0432994B2 JP 14367984 A JP14367984 A JP 14367984A JP 14367984 A JP14367984 A JP 14367984A JP H0432994 B2 JPH0432994 B2 JP H0432994B2
- Authority
- JP
- Japan
- Prior art keywords
- impedance
- signal
- piezoelectric ceramic
- control means
- ceramic sensor
- 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
- 230000005540 biological transmission Effects 0.000 claims description 28
- 239000000919 ceramic Substances 0.000 claims description 10
- 230000003321 amplification Effects 0.000 claims description 6
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 6
- 239000003990 capacitor Substances 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000009467 reduction Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 13
- 230000007423 decrease Effects 0.000 description 10
- 230000033001 locomotion Effects 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000002238 attenuated effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 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
- 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
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)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14367984A JPS6123984A (ja) | 1984-07-11 | 1984-07-11 | 超音波送受信装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14367984A JPS6123984A (ja) | 1984-07-11 | 1984-07-11 | 超音波送受信装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6123984A JPS6123984A (ja) | 1986-02-01 |
| JPH0432994B2 true JPH0432994B2 (sv) | 1992-06-01 |
Family
ID=15344418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14367984A Granted JPS6123984A (ja) | 1984-07-11 | 1984-07-11 | 超音波送受信装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6123984A (sv) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03131206A (ja) * | 1989-10-18 | 1991-06-04 | Yoshiro Nakamatsu | 折板傘 |
| JP4569564B2 (ja) * | 2005-01-12 | 2010-10-27 | パナソニック電工株式会社 | 動線計測システム |
| JP4569565B2 (ja) * | 2005-01-12 | 2010-10-27 | パナソニック電工株式会社 | 動線計測システム |
| JP6568493B2 (ja) * | 2016-03-18 | 2019-08-28 | 株式会社Ｓｏｋｅｎ | 物体検知装置 |
-
1984
- 1984-07-11 JP JP14367984A patent/JPS6123984A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6123984A (ja) | 1986-02-01 |
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