JPH0226824B2 - - Google Patents
Info
- Publication number
- JPH0226824B2 JPH0226824B2 JP56083664A JP8366481A JPH0226824B2 JP H0226824 B2 JPH0226824 B2 JP H0226824B2 JP 56083664 A JP56083664 A JP 56083664A JP 8366481 A JP8366481 A JP 8366481A JP H0226824 B2 JPH0226824 B2 JP H0226824B2
- Authority
- JP
- Japan
- Prior art keywords
- ultrasonic
- waves
- circuit
- comparator
- output
- 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 - Lifetime
Links
- 230000004069 differentiation Effects 0.000 claims 2
- 239000000284 extract Substances 0.000 claims 1
- 230000001960 triggered effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 230000007257 malfunction Effects 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001028 reflection method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/945—Proximity switches
Landscapes
- Burglar Alarm Systems (AREA)
- Electronic Switches (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8366481A JPS57197926A (en) | 1981-05-30 | 1981-05-30 | Ultrasonic sense switch device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8366481A JPS57197926A (en) | 1981-05-30 | 1981-05-30 | Ultrasonic sense switch device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57197926A JPS57197926A (en) | 1982-12-04 |
JPH0226824B2 true JPH0226824B2 (US07860544-20101228-C00003.png) | 1990-06-13 |
Family
ID=13808720
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8366481A Granted JPS57197926A (en) | 1981-05-30 | 1981-05-30 | Ultrasonic sense switch device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57197926A (US07860544-20101228-C00003.png) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102317981B (zh) * | 2009-02-11 | 2014-09-03 | 皇家飞利浦电子股份有限公司 | 利用零位点的运动检测系统和方法 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52152146A (en) * | 1976-06-14 | 1977-12-17 | Matsushita Electric Works Ltd | Multistage amplifier circuit |
JPS5610593A (en) * | 1979-06-28 | 1981-02-03 | Chevron Res | Lubricant oil composition containing molybdenum compound and production thereof |
-
1981
- 1981-05-30 JP JP8366481A patent/JPS57197926A/ja active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52152146A (en) * | 1976-06-14 | 1977-12-17 | Matsushita Electric Works Ltd | Multistage amplifier circuit |
JPS5610593A (en) * | 1979-06-28 | 1981-02-03 | Chevron Res | Lubricant oil composition containing molybdenum compound and production thereof |
Also Published As
Publication number | Publication date |
---|---|
JPS57197926A (en) | 1982-12-04 |
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