JPS5552912A - Sensor using elastic surface wave - Google Patents
Sensor using elastic surface waveInfo
- Publication number
- JPS5552912A JPS5552912A JP12580878A JP12580878A JPS5552912A JP S5552912 A JPS5552912 A JP S5552912A JP 12580878 A JP12580878 A JP 12580878A JP 12580878 A JP12580878 A JP 12580878A JP S5552912 A JPS5552912 A JP S5552912A
- Authority
- JP
- Japan
- Prior art keywords
- surface wave
- detected
- sensor unit
- elastic surface
- 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.)
- Pending
Links
Landscapes
- Measuring Fluid Pressure (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
PURPOSE: To properly accomplish detection of the spaced pieces of information, with the use of a relatively simple construction by generating a plurality of frequency signals with the use of a sensor unit so that the beat frequencies of the two signals may be detected by a detecting unit.
CONSTITUTION: A sensor unit 1 is equipped with oscillators 2a and 2b using elastic surface wave elements. The delay times of surface wave delay lines 6a and 6b are made different, and different frequencies are added and emitted from an antenna 8. On the other hand, the received waves from an antenna 10 are detected at 12 by a detecting unit 9 so that the beat frequency of the spectrum generated after the frequency discrimination at 13 may be measured. As a result, the temperature of the sensor unit 1 can be detected.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12580878A JPS5552912A (en) | 1978-10-13 | 1978-10-13 | Sensor using elastic surface wave |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12580878A JPS5552912A (en) | 1978-10-13 | 1978-10-13 | Sensor using elastic surface wave |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5552912A true JPS5552912A (en) | 1980-04-17 |
Family
ID=14919418
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12580878A Pending JPS5552912A (en) | 1978-10-13 | 1978-10-13 | Sensor using elastic surface wave |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5552912A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1991013832A2 (en) * | 1990-03-03 | 1991-09-19 | Anthony Lonsdale | Method and apparatus for measuring strain |
JP2002156295A (en) * | 2000-10-06 | 2002-05-31 | Robert Bosch Gmbh | Force sensor |
-
1978
- 1978-10-13 JP JP12580878A patent/JPS5552912A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1991013832A2 (en) * | 1990-03-03 | 1991-09-19 | Anthony Lonsdale | Method and apparatus for measuring strain |
US5585571A (en) * | 1990-03-03 | 1996-12-17 | Lonsdale; Anthony | Method and apparatus for measuring strain |
JP2002156295A (en) * | 2000-10-06 | 2002-05-31 | Robert Bosch Gmbh | Force sensor |
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