CN2590320Y - 地埋式拾音器 - Google Patents
地埋式拾音器 Download PDFInfo
- Publication number
- CN2590320Y CN2590320Y CN 02285174 CN02285174U CN2590320Y CN 2590320 Y CN2590320 Y CN 2590320Y CN 02285174 CN02285174 CN 02285174 CN 02285174 U CN02285174 U CN 02285174U CN 2590320 Y CN2590320 Y CN 2590320Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- piezoelectric ceramic
- resonant cavity
- pick
- pickup
- 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
Images
Landscapes
- Geophysics And Detection Of Objects (AREA)
Abstract
Description
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 02285174 CN2590320Y (zh) | 2002-11-11 | 2002-11-11 | 地埋式拾音器 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 02285174 CN2590320Y (zh) | 2002-11-11 | 2002-11-11 | 地埋式拾音器 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN2590320Y true CN2590320Y (zh) | 2003-12-03 |
Family
ID=33746262
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 02285174 Expired - Lifetime CN2590320Y (zh) | 2002-11-11 | 2002-11-11 | 地埋式拾音器 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN2590320Y (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102183784A (zh) * | 2011-01-30 | 2011-09-14 | 宋巧贞 | 一种地震报警方法及其装置 |
-
2002
- 2002-11-11 CN CN 02285174 patent/CN2590320Y/zh not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102183784A (zh) * | 2011-01-30 | 2011-09-14 | 宋巧贞 | 一种地震报警方法及其装置 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9778227B2 (en) | Device and system for and a method of monitoring a cable for a physical disturbance | |
US2345771A (en) | Alarm system | |
CN206564007U (zh) | 一种复合型周界报警装置 | |
CN2590320Y (zh) | 地埋式拾音器 | |
CN102289904A (zh) | 一种入侵检测方法及系统 | |
CN106327756A (zh) | 周界安防系统 | |
CN201749527U (zh) | 埋地振动电缆警戒装置 | |
Gabriel et al. | Vibration monitoring system for human activity detection | |
CN1269086C (zh) | 集群式地下拾音报警系统 | |
CN104574783A (zh) | 智能安防预警系统 | |
CN201698218U (zh) | 楼宇智能控制系统 | |
CN207443035U (zh) | 语音监听系统 | |
Fagbohun et al. | Security devices application studies in crime prevention and policing in Nigeria | |
US20090167530A1 (en) | Remote public full-time anti-theft system | |
RU68157U1 (ru) | Комбинированное средство охраны периметров объектов | |
US20160240053A1 (en) | Portable Security System | |
US3611280A (en) | Detection means | |
CN205788640U (zh) | 一种家庭报警系统 | |
KR102428514B1 (ko) | 금속탐지장치 및 이를 이용한 방범방재시스템 | |
RU72342U1 (ru) | Устройство для охранной сигнализации | |
CN204808521U (zh) | 一种防盗机器人 | |
CN2847401Y (zh) | 振动入侵探测器 | |
CN220913716U (zh) | 一种雷视定位周界安防语音报警设备 | |
CN117894128A (zh) | 一种地下、地面和低空入侵三维联动立体预警安保系统 | |
US20230400350A1 (en) | Gunshot detection via classification using deep learning and fiber sensing technologies |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
ASS | Succession or assignment of patent right |
Owner name: BEIJING JIANCHENZHONGKE ELECTRONIC TECHNIQUE CO., Free format text: FORMER OWNER: HUANYUCHEN INVESTMENT ADVISOR CO., LTD., BEIJING Effective date: 20100721 |
|
C41 | Transfer of patent application or patent right or utility model | ||
COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100032 801, BUILDING 1, JINCHEN APT., NO.4, GUANGCHENG STREET, XICHENG DISTRICT, BEIJING TO: 100032 ROOM 801, BUILDING 1, NO.4, GUANGCHENG STREET, XICHENG DISTRICT, BEIJING |
|
TR01 | Transfer of patent right |
Effective date of registration: 20100721 Address after: 100032 Beijing Xicheng District Guangcheng Street No. 4 Building No. 1 hospital room 801 Patentee after: Beijing Jian Chen Zhongke Electronic Technology Co., Ltd. Address before: 100032 Beijing city Xicheng District Guangcheng Street No. 4 hospital Jinchen apartment building 1 801 Patentee before: Huanyuchen Investment Advisor Co., Ltd., Beijing |
|
C17 | Cessation of patent right | ||
CX01 | Expiry of patent term |
Expiration termination date: 20121111 Granted publication date: 20031203 |