CN2669187Y - Electric-field distortion detector - Google Patents
Electric-field distortion detector Download PDFInfo
- Publication number
- CN2669187Y CN2669187Y CNU2004200325429U CN200420032542U CN2669187Y CN 2669187 Y CN2669187 Y CN 2669187Y CN U2004200325429 U CNU2004200325429 U CN U2004200325429U CN 200420032542 U CN200420032542 U CN 200420032542U CN 2669187 Y CN2669187 Y CN 2669187Y
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- field
- electric
- utility
- model
- detector
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- 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
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Abstract
The electric-field distortion detector of the utility model, relating to an electric-field sensor, aims at solving the problems that the anti-interference ability of the existed detector is poor, the cost is high, the existed detector can not be installed in a complicated landform, etc. The electric-field distortion detector comprises a stabilized voltage power supply 1, a low frequency wave generator 2, a field wire 3, an output interface 4, a signal processor 5 and an antenna 6. The utility model is characterized in that a quasi-electrostatic field is formed by the field wire and the antenna. When a human body interferes (approaches, touches, shears, crosses over), the distortion of electric field happens, and the alarm is triggered. The utility model is suitable to the perimeter protection for standard enclosing walls and complicated landforms such as stores, prisons, banks, factories, orchards, fish ponds, intelligent districts, villa districts, etc.
Description
Technical field:
The utility model relates to electric-field sensor, and particularly a kind of static electricity on human body of utilization disturbs original electrostatic field and the electric field induction perimeter intrusion detecting device of output alarm signal.
Background technology:
The existing sensor that is used for circumferences warnings such as enclosure wall, fence, most active infrared correlative detectors that adopt, though this type of detector is easy to install, but poor anti jamming capability, easily wrong report under conditions such as sunlight, heavy rain, thick fog, and cost is higher, can not use on complex-terrain such as be uneven, having many bends or curves.
The utility model content:
Given this, the purpose of this utility model is to provide the circumferential electric field distortion that a kind of antijamming capability is strong, cost is low, can install and use detector on complex-terrain.
The utility model is to realize like this, the direct supplys that provide at different levels are provided after step-down, rectification, voltage stabilizing civil power, produce the low frequency wave of one tens Hz by low frequency wave generator 2 to tens KHz, export field wire 3 then to, by field wire 3 spatial emission electromagnetic field towards periphery, on certain distance, establish an antenna 6 that is parallel to field wire 3 again, form an electrostatic field like this between field wire 3 and the antenna 6, when unmanned invasion, the output of antenna 6 is constant; When the people invaded, this electrostatic field distorted, and the output of antenna 6 changes, and satisfied predetermined standard time when variation and just triggered warning.
Electric field distortion detector of the present utility model (seeing accompanying drawing 1) comprises: stabilized voltage supply 1, low frequency wave generator 2, field wire 3 that is parallel to each other and antenna 6, signal processor 5, output interface 4.
Above-mentioned stabilized voltage supply 1 is by transformer B
1, bridge rectifier and three terminal regulator IC
1Form.
Above-mentioned low frequency wave produces low-frequency pulse by many resonance fields device and forms after amplifying shaping.
Above-mentioned field wire 3 and antenna 6 constitute for the plain conductor that is space parallel, and its number can be two or many.
Above-mentioned signal processor 5 comprises a plurality of circuit such as the digitized processing, discriminating of signal.
Above-mentioned output interface 4 comprises: the delivery outlet that triggers delay circuit, disconnection and two kinds of signals of connection.
During work, form an electrostatic field between field wire 3 and the antenna 6, when human body disturbs (approaching, touch, cut, cross) this electric field, electric field distorts, its variable quantity through signal processor digitized processing, storage,, differentiate after, reach preassigned and promptly report to the police, the length of warning pulse is determined by the triggering delay circuit in the output interface 4.
The utility model has following advantage and effect compared with prior art:
1, tangible entity is given a kind of deterrence of criminal and barrier effect, makes it and dare not act rashly, and rate diminishes crime.
2, can install arbitrarily with complex-terrain, not have the dead angle, unlike infrared ray, microwave wall, be confined to sighting distance and use.
3, rate of false alarm is low, not influenced by sunlight, heavy rain, thick fog etc.
4, with low cost, can satisfy various level user requirements.
The utility model and main control system, alarm call, CCTV etc. form various perimeter alarm systems, can be widely used in warehouse, prison, bank, factory, orchard, fish pond, intellectual communityintellectualized village, villa district etc. and make boundary defence.
Description of drawings:
Accompanying drawing 1: structured flowchart of the present utility model.
Accompanying drawing 2: electrical schematic diagram of the present utility model.
Embodiment:
Embodiment 1:
Electric field distortion detector of the present utility model as accompanying drawing 2, is made up of mu balanced circuit, low frequency wave generation circuit, detection line (field wire and antenna), signal processing circuit, output interface.
Civil power is the D.C. regulated power supplies that provide at different levels after B1 step-down, bridge rectifier, three end IC1 voltage stabilizings, multivibrator IC2 produces one tens Hz to tens KHz low-frequency pulses, this pulse becomes low frequency wave after T1, B2 amplify shaping, export field wire 3 then to, by field wire 3 spatial emission electromagnetic field towards periphery, the antenna 6 that is parallel to field wire 3 receives the electromagnetic signal of field wire 3 emissions.When unmanned invasion, the output of antenna 6 is constant; When the people invades, quasi-electrostatic field between field wire 3 and the antenna 6 distorts, the output of antenna 6 changes, this changes entering signal processor Q and carries out the digitized processing discriminating, reach preassigned and just export warning and delaying circuit IC3 to, the pulse of IC3 output alarm is to T2, and T2 drives relay J, by 1., 2. terminal output is communicated with, disconnects two kinds of trigger pips, promote peripheral interface (main frame, alarm call, CCTV) and start and report to the police.
Three-terminal voltage-stabilizing IC
1Adopt LM7812, multivibrator IC
2Adopt NE555, signal processor Q adopts LM358, time-delay output circuit IC
3Adopt NE555, transformer B
1Adopt the 220V/15V miniature transformer, B
2Adopt ￠ 26 pot type magnetic cores, its turn ratio is 1: 10.T
1Adopt 3DD15, T
2Adopt 9014.
Claims (1)
1, a kind of electric field distortion detector, comprise low frequency wave generator (2) and output field wire (3) thereof, signal processor (5) and input aerial (6) thereof is characterized in that: field wire (3) is the plain conductor that is space parallel with antenna (6), and its quantity can be two or many.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200325429U CN2669187Y (en) | 2004-01-13 | 2004-01-13 | Electric-field distortion detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200325429U CN2669187Y (en) | 2004-01-13 | 2004-01-13 | Electric-field distortion detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2669187Y true CN2669187Y (en) | 2005-01-05 |
Family
ID=34441609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2004200325429U Expired - Fee Related CN2669187Y (en) | 2004-01-13 | 2004-01-13 | Electric-field distortion detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2669187Y (en) |
-
2004
- 2004-01-13 CN CNU2004200325429U patent/CN2669187Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Su Zhiyong Document name: Notification of Termination of Patent Right |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |