CN105488936A - Perimeter intrusion detection and alarm device - Google Patents
Perimeter intrusion detection and alarm device Download PDFInfo
- Publication number
- CN105488936A CN105488936A CN201610046047.0A CN201610046047A CN105488936A CN 105488936 A CN105488936 A CN 105488936A CN 201610046047 A CN201610046047 A CN 201610046047A CN 105488936 A CN105488936 A CN 105488936A
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- CN
- China
- Prior art keywords
- alarm device
- cable
- magnetic field
- perimeter intrusion
- detection trigger
- 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.)
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Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/22—Electrical actuation
- G08B13/24—Electrical actuation by interference with electromagnetic field distribution
- G08B13/2491—Intrusion detection systems, i.e. where the body of an intruder causes the interference with the electromagnetic field
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Geophysics And Detection Of Objects (AREA)
- Burglar Alarm Systems (AREA)
Abstract
The invention discloses a perimeter intrusion detection and alarm device. The device comprises a magnetic field radiation source composed by the connection between a high frequency current source and a cable I, and a magnetic field detector composed by connection between a detection trigger alarm device and a cable II. The detection trigger alarm device is connected with an alarm. The perimeter intrusion detection and alarm device is simple in structure, convenient to install, low in cost, high in stability, sensitive in detection, low in false alarm rate, hidden, and capable of realizing all-day work.
Description
Technical field
The present invention relates to a kind of sniffer, specifically a kind of perimeter intrusion detecting warning device.
Background technology
At some security protection important areas, in order to prevent illegal invasion and various destructive activity, traditional precautionary measures arrange (as iron bar, enclosure wall, steel wire hedge net etc.) barrier or restraining mass, and arrangement personnel step up patrols.Utilize advanced science and technology current offender, in more complicated, the intelligentized situation of means of crime, traditional risk prevention instruments oneself be difficult to the needs adapting to key departments, key unit's safeguarding work.Manpower is taken precautions against often by the impact of the factors such as time, region, peopleware and energy, also starts a leak unavoidably and slips up.
At present along with the development of society, the progress of science and technology, perimeter intrusion detecting warning device has become an important component part of security system, is the first line of defence of security alerting system.Intrusion alarm system is more and more subject to the attention of each side, and user's request is urgent.But existing perimeter intrusion detecting warning device due to technical difficulty large, amount of investment is large, and security protection effect is general, is difficult to satisfy social needs, cannot be used widely.
Summary of the invention
For above-mentioned prior art Problems existing, the invention provides a kind of perimeter intrusion detecting warning device, structure is simple, and easy for installation, with low cost, stability is high, detect sensitive, rate of false alarm is low, lay hidden, realize all weather operations.
To achieve these goals, this circumference Intrusion Detection Alarm device comprises the magnetic field radiation source be made up of source of high frequency current communication cable I;
And the magnetic field detectors to be made up of detection trigger alarm device communication cable II, described detection trigger alarm device is connected with alarm.
Further, described cable I respectively along search coverage circumference, is laid in search coverage subsurface with cable II side by side.
Further, described detection trigger alarm device comprises the current transformer T1 be communicated with cable II, and described current transformer T1 is connected with HF schottky diode D1 and resistance R1, resistance R2 and electric capacity C1.
Compared with prior art, this circumference Intrusion Detection Alarm device is consisted of source of high frequency current, detection trigger alarm device and two groups of cables, and structure is simple, easy for installation, with low cost, stability is high, detect sensitive, rate of false alarm is low, lay hidden, realize all weather operations.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 detects trigger alarm circuit diagram in the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
As depicted in figs. 1 and 2, this circumference Intrusion Detection Alarm device comprises the magnetic field radiation source be made up of source of high frequency current communication cable I;
And the magnetic field detectors to be made up of detection trigger alarm device communication cable II, described detection trigger alarm device is connected with alarm.
The AA ＇ loop formed in cable I forms magnetic field radiation source, access source of high frequency current, because the size of electric current, direction periodically change, change the electromagnetic field generating period causing this electric current to produce, thus produce periodically variable alternating magnetic field around the AA ＇ loop of cable I.The BB ＇ loop formed in cable II is in the periodically variable alternating magnetic field of AA ＇ loop generation, can produce periodic induction current.
Adopting space Identification Theory, for distant magnetic noise source, is uniform magnetic field in the magnetic field at detecting coil place, BB ＇ loop, contrary through the magnetic flux equal and opposite in direction of two pairs of coils, direction, cancels each other, therefore can the interference of exclusively magnetic field and environmental magnetic field; For the Magnetic Field Source of close together, because the spatial magnetic field of two pairs of coils is uneven, therefore BB ＇ loop detecting coil can input out.
When ground between AA ＇ loop, BB ＇ loop is with biotic intrusion, the magnetoconductivity of the magnetic field medium in this space can change, alternating magnetic field distribution around AA ＇ loop will distort because mutually superposing, the amplitude average value of induction current in BB ＇ loop in one-period also can change, be detected after trigger alarm device detects, when described mean value exceedes setting value, triggered alarm.
Further, described cable I respectively along search coverage circumference, is laid in search coverage subsurface with cable II side by side.
Further, described detection trigger alarm device comprises the current transformer T1 be communicated with cable II, and described current transformer T1 is connected with HF schottky diode D1 and resistance R1, resistance R2 and electric capacity C1.Induction current in the BB ＇ loop that cable II is formed is coupled through current transformer T1, HF schottky diode D1 rectification, resistance R1, resistance R2 and electric capacity C1 complete anomalous integral low-pass filtering, finally detect the variable quantity of induction current amplitude average value, when described variable quantity exceedes setting value, namely triggered alarm completes warning.
In sum, this circumference Intrusion Detection Alarm apparatus structure is simple, and easy for installation, with low cost, stability is high, detect sensitive, rate of false alarm is low, lay hidden, realize all weather operations.
Claims (3)
1. a perimeter intrusion detecting warning device, is characterized in that,
Comprise the magnetic field radiation source be made up of source of high frequency current communication cable I;
And the magnetic field detectors to be made up of detection trigger alarm device communication cable II, described detection trigger alarm device is connected with alarm.
2. a kind of perimeter intrusion detecting warning device according to claim 1, is characterized in that,
Described cable I respectively along search coverage circumference, is laid in search coverage subsurface with cable II side by side.
3. a kind of perimeter intrusion detecting warning device according to claim 1, is characterized in that,
Described detection trigger alarm device comprises the current transformer T1 be communicated with cable II, and described current transformer T1 is connected with HF schottky diode D1 and resistance R1, resistance R2 and electric capacity C1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610046047.0A CN105488936A (en) | 2016-01-22 | 2016-01-22 | Perimeter intrusion detection and alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610046047.0A CN105488936A (en) | 2016-01-22 | 2016-01-22 | Perimeter intrusion detection and alarm device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105488936A true CN105488936A (en) | 2016-04-13 |
Family
ID=55675896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610046047.0A Pending CN105488936A (en) | 2016-01-22 | 2016-01-22 | Perimeter intrusion detection and alarm device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105488936A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108802850A (en) * | 2017-05-03 | 2018-11-13 | 北京至感传感器技术研究院有限公司 | Stealthy safe examination system suitable for open ground |
| CN108898776A (en) * | 2018-06-29 | 2018-11-27 | 奇点新源国际技术开发(北京)有限公司 | Invader detection method and device applied to perimeter security system |
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| CN201004258Y (en) * | 2006-11-02 | 2008-01-09 | 辛东升 | Leakage cable guard system |
| JP4046274B2 (en) * | 2002-10-02 | 2008-02-13 | 三菱電機株式会社 | Intruder and obstacle detection device |
| CN201025553Y (en) * | 2007-01-22 | 2008-02-20 | 上海申达自动防范系统工程有限公司 | Motive leakage cable intrusion detector |
| CN201322969Y (en) * | 2008-12-24 | 2009-10-07 | 上海申达自动防范系统工程有限公司 | Alarming processing unit, main machine of detector and leakage cable invasion detector |
| CN201477695U (en) * | 2009-09-02 | 2010-05-19 | 福建俊豪电子有限公司 | GSM wireless warning device used for electrical power unit |
| CN101877160A (en) * | 2009-04-30 | 2010-11-03 | 上海申达自动防范系统工程有限公司 | Leakage cable intrusion detector system |
| CN201964973U (en) * | 2010-12-17 | 2011-09-07 | 王群英 | Electric equipment detector |
| CN202111451U (en) * | 2011-06-30 | 2012-01-11 | 傅梨花 | Monitoring module for overloaded power consumption |
| CN105186613A (en) * | 2015-09-11 | 2015-12-23 | 宁波大简智慧科技有限公司 | Charging circuit |
| CN205541229U (en) * | 2016-01-22 | 2016-08-31 | 格利尔数码科技股份有限公司 | Perimeter intrusion detection alarm device |
-
2016
- 2016-01-22 CN CN201610046047.0A patent/CN105488936A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4046274B2 (en) * | 2002-10-02 | 2008-02-13 | 三菱電機株式会社 | Intruder and obstacle detection device |
| CN201004258Y (en) * | 2006-11-02 | 2008-01-09 | 辛东升 | Leakage cable guard system |
| CN201025553Y (en) * | 2007-01-22 | 2008-02-20 | 上海申达自动防范系统工程有限公司 | Motive leakage cable intrusion detector |
| CN201322969Y (en) * | 2008-12-24 | 2009-10-07 | 上海申达自动防范系统工程有限公司 | Alarming processing unit, main machine of detector and leakage cable invasion detector |
| CN101877160A (en) * | 2009-04-30 | 2010-11-03 | 上海申达自动防范系统工程有限公司 | Leakage cable intrusion detector system |
| CN201477695U (en) * | 2009-09-02 | 2010-05-19 | 福建俊豪电子有限公司 | GSM wireless warning device used for electrical power unit |
| CN201964973U (en) * | 2010-12-17 | 2011-09-07 | 王群英 | Electric equipment detector |
| CN202111451U (en) * | 2011-06-30 | 2012-01-11 | 傅梨花 | Monitoring module for overloaded power consumption |
| CN105186613A (en) * | 2015-09-11 | 2015-12-23 | 宁波大简智慧科技有限公司 | Charging circuit |
| CN205541229U (en) * | 2016-01-22 | 2016-08-31 | 格利尔数码科技股份有限公司 | Perimeter intrusion detection alarm device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108802850A (en) * | 2017-05-03 | 2018-11-13 | 北京至感传感器技术研究院有限公司 | Stealthy safe examination system suitable for open ground |
| CN108898776A (en) * | 2018-06-29 | 2018-11-27 | 奇点新源国际技术开发(北京)有限公司 | Invader detection method and device applied to perimeter security system |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160413 |