GB2388916B - Improvements in and relating to piezo-electric elements - Google Patents
Improvements in and relating to piezo-electric elementsInfo
- Publication number
- GB2388916B GB2388916B GB0211984A GB0211984A GB2388916B GB 2388916 B GB2388916 B GB 2388916B GB 0211984 A GB0211984 A GB 0211984A GB 0211984 A GB0211984 A GB 0211984A GB 2388916 B GB2388916 B GB 2388916B
- Authority
- GB
- United Kingdom
- Prior art keywords
- piezo
- relating
- electric elements
- electric
- elements
- 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 - Fee Related
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
- G08B29/12—Checking intermittently signalling or alarm systems
- G08B29/126—Checking intermittently signalling or alarm systems of annunciator circuits
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0211984A GB2388916B (en) | 2002-05-23 | 2002-05-23 | Improvements in and relating to piezo-electric elements |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0211984A GB2388916B (en) | 2002-05-23 | 2002-05-23 | Improvements in and relating to piezo-electric elements |
Publications (3)
Publication Number | Publication Date |
---|---|
GB0211984D0 GB0211984D0 (en) | 2002-07-03 |
GB2388916A GB2388916A (en) | 2003-11-26 |
GB2388916B true GB2388916B (en) | 2004-12-01 |
Family
ID=9937350
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB0211984A Expired - Fee Related GB2388916B (en) | 2002-05-23 | 2002-05-23 | Improvements in and relating to piezo-electric elements |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2388916B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104424731A (en) * | 2013-08-26 | 2015-03-18 | 霍尼韦尔国际公司 | Apparatus and method of silent monitoring alarm sounders |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1898377A1 (en) * | 2006-09-08 | 2008-03-12 | Hekatron Vertriebs GmbH | Detector and method for testing this detector |
DE102011087676A1 (en) | 2011-12-02 | 2013-06-06 | Continental Automotive Gmbh | Method and device for checking a loudspeaker arrangement |
DE102016110680A1 (en) * | 2016-06-09 | 2017-12-14 | Techem Energy Services Gmbh | Circuit arrangement and method for controlling and checking the function of a piezoelectric sounder |
CN113256951A (en) * | 2021-05-13 | 2021-08-13 | 公安部第三研究所 | System for realizing feedback type vibration recording and simulation test aiming at vibration intrusion detector |
US20230100592A1 (en) * | 2021-09-28 | 2023-03-30 | Carrier Corporation | Piezo sounder self-test using feedback pin |
CN116520029B (en) * | 2023-03-28 | 2023-11-17 | 山东大学 | Digital self-diagnosis sensing intelligent layer integrating active and passive monitoring and method |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3855415A (en) * | 1973-07-20 | 1974-12-17 | Kane Corp Du | Communication sound system continuously monitored |
US4037222A (en) * | 1975-10-02 | 1977-07-19 | Gulf & Western Manufacturing Company (Systems) | Supervision of transducers |
US4554533A (en) * | 1983-09-26 | 1985-11-19 | Whelen Engineering Company, Inc. | Method of and apparatus for the testing of warning systems |
EP0740278A1 (en) * | 1994-11-14 | 1996-10-30 | The Nippon Signal Co. Ltd. | Alarm device |
-
2002
- 2002-05-23 GB GB0211984A patent/GB2388916B/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3855415A (en) * | 1973-07-20 | 1974-12-17 | Kane Corp Du | Communication sound system continuously monitored |
US4037222A (en) * | 1975-10-02 | 1977-07-19 | Gulf & Western Manufacturing Company (Systems) | Supervision of transducers |
US4554533A (en) * | 1983-09-26 | 1985-11-19 | Whelen Engineering Company, Inc. | Method of and apparatus for the testing of warning systems |
EP0740278A1 (en) * | 1994-11-14 | 1996-10-30 | The Nippon Signal Co. Ltd. | Alarm device |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104424731A (en) * | 2013-08-26 | 2015-03-18 | 霍尼韦尔国际公司 | Apparatus and method of silent monitoring alarm sounders |
CN104424731B (en) * | 2013-08-26 | 2017-10-03 | 霍尼韦尔国际公司 | The apparatus and method for voicelessly monitoring alarm sounder |
Also Published As
Publication number | Publication date |
---|---|
GB0211984D0 (en) | 2002-07-03 |
GB2388916A (en) | 2003-11-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20210523 |