CN108831079B - High-voltage electronic fence alarm system - Google Patents
High-voltage electronic fence alarm system Download PDFInfo
- Publication number
- CN108831079B CN108831079B CN201810659082.9A CN201810659082A CN108831079B CN 108831079 B CN108831079 B CN 108831079B CN 201810659082 A CN201810659082 A CN 201810659082A CN 108831079 B CN108831079 B CN 108831079B
- Authority
- CN
- China
- Prior art keywords
- metal wire
- voltage
- metal wires
- composite metal
- alarm
- 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.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/02—Mechanical actuation
- G08B13/12—Mechanical actuation by the breaking or disturbance of stretched cords or wires
- G08B13/122—Mechanical actuation by the breaking or disturbance of stretched cords or wires for a perimeter fence
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Burglar Alarm Systems (AREA)
Abstract
The invention relates to a high-voltage electronic fence alarm system, which comprises a plurality of defense areas, high-voltage and low-voltage converters, an alarm controller and an alarm, wherein each defense area comprises a plurality of fence columns and an even number of metal wires arranged on the fence columns; the high-low voltage converter is connected with the alarm through the alarm controller; the system adopts a positive and negative high voltage alternating scheme or a composite metal wire scheme or a scheme of combining a composite metal wire and positive and negative alternating high voltage. Reasonable in design, simple structure can effectively deal with the illegal invasion that the equipotential bridging cut caused or take off the metal wire from top to bottom and form the metal fence opening and the illegal invasion or deal with above-mentioned two kinds of illegal invasion simultaneously.
Description
Technical Field
The invention relates to the technical field of safety protection, in particular to a high-voltage electronic fence alarm system.
Background
The high-voltage fence alarm system is widely applied to places such as residential houses, enclosures of enterprises and public institutions and the like. It is generally composed of four parts as shown in fig. 1. High voltage fences are typically made up of an even number (e.g., 4 or 6) of bare metal wires, each of which is subjected to a high voltage (e.g., thousands to tens of thousands of volts) to prevent illegal climbing by a thief. Each bare metal wire can be a metal wire or a bare metal cable consisting of a plurality of metal wires. When a person touches the high-voltage metal wire, a voltage difference is generated due to the resistance characteristic of the human body, the voltage difference is converted into a low voltage through the high-voltage and low-voltage converter and is monitored by the alarm controller, so that alarm is triggered, specifically, when the reference voltage subtracted from the voltage received by the alarm controller reaches a set alarm threshold, an alarm signal (such as 12V voltage) is output to the alarm, and the alarm receives the alarm signal and then sends an alarm through light or a loudspeaker.
After the high-voltage fence alarm system is put into use, an illegal invader can cross over through equipotential and then cut off one or more bare metal wires to form a metal fence opening for illegal invasion as shown in figure 1. In this case, the equipotential jumper can conduct electricity, so that a circuit loop is not damaged, a voltage difference is not generated, and an alarm is not triggered.
After the high-voltage fence alarm system is put into use, an illegal intruder may contact the upper bare metal wire and the lower bare metal wire through insulators such as leather gloves and the like as shown in fig. 2, and then open the metal wires up and down to form a metal fence opening for illegal intrusion. In this case, since the insulator is used to contact the metal wire, a voltage difference is not generated, and thus an alarm is not triggered.
Disclosure of Invention
In order to solve the problems, the invention provides a high-voltage electronic fence alarm system which is reasonable in design and simple in structure and can effectively deal with illegal invasion caused by equipotential bridging shearing or illegal invasion caused by opening a metal fence opening by vertically opening a metal wire or both illegal invasion.
A high-voltage electronic fence alarm system comprises a plurality of defense areas, high-voltage and low-voltage converters, an alarm controller and an alarm, wherein each defense area comprises a plurality of fence posts and an even number of metal wires arranged on the fence posts; the high-low voltage converter is connected with the alarm through the alarm controller; the system adopts a positive and negative high voltage alternating scheme or a composite metal wire scheme or a scheme of combining a composite metal wire and positive and negative alternating high voltage. The fence post of the present invention is not limited to a post perpendicular to the ground, and may be a post of various forms as long as it can fix a tension alloy wire. In addition, any arrangement of the wires is possible as long as the gap between the wires between the fence posts can effectively prevent an intruder from entering.
Positive and negative high voltage alternative scheme: the high-low voltage converter applies positive high voltage or negative high voltage to two metal wires of the same loop at the same time, and one metal wire is positive high voltage and the other metal wire is negative high voltage in two adjacent metal wires of the same defense area.
When an intruder intrudes by opening the opening through the insulator, the distance between the metal wires of the fence is usually only a few centimeters to ten and several centimeters, so that the intruder inevitably causes the adjacent metal wires on the fence to touch together when the intruder intrudes from the opening, and the adjacent metal wires are applied with high voltages with opposite positive and negative voltages, so that a short circuit is caused, and the alarm controller monitors the short circuit to trigger the alarm.
Scheme of the composite metal wire: the metal wires are composite metal wires formed by compounding bare metal wires and surface insulation metal wires, one end of each two composite metal wires in the same defense area is connected, the surface insulation metal wire at the other end is connected to the high-low voltage converter to form a loop, and the high-low voltage converter applies high voltage to the surface insulation metal wire of each composite metal wire simultaneously; one end of the metal inner core of the surface insulated metal wire, which is far away from one end of the high-low voltage converter, of one or two composite metal wires in the same loop is connected with one end of the bare metal wire.
Because the surface insulated metal wire and the bare metal wire are in contact, the bare metal wire can have high voltage, when an intruder tries to intrude by adopting an equipotential bridging shearing mode, because the equipotential bridging wire can only assist the bare metal wire to form a circuit path under the shearing condition but cannot assist the surface insulated metal wire to form the circuit path, and a circuit connected to the high-low voltage converter is the surface insulated metal wire instead of the bare metal wire, the alarm controller monitors the voltage difference to generate an alarm signal, thereby triggering the alarm.
The scheme of combining the composite metal wire with positive and negative alternating high voltage is as follows: the metal wires are composite metal wires formed by compounding bare metal wires and surface insulation metal wires, one end of each two composite metal wires in the same defense area is connected, the surface insulation metal wire at the other end is connected to a high-low voltage converter to form a loop, the high-low voltage converter applies positive high voltage or negative high voltage to the surface insulation metal wires of the two composite metal wires in the same loop at the same time, the surface insulation metal wire of one composite metal wire is positive high voltage, and the surface insulation metal wire of one composite metal wire is negative high voltage; one end of the metal inner core of the surface insulated metal wire, which is far away from one end of the high-low voltage converter, of one or two composite metal wires in the same loop is connected with one end of the bare metal wire.
The leakage alarm caused by the fact that a common bare metal wire cannot form a voltage difference under the condition of equipotential bridging is avoided through the composite metal wire. Meanwhile, high voltages with opposite positive and negative polarities are applied to the adjacent metal wires on the fence, so that the adjacent metal wires are short-circuited when the opening is opened, and the condition that the same high voltage is applied to the metal wires of the fence to cause leakage alarm is avoided.
The technical scheme is further improved and refined, and the bare metal wire is wrapped outside the surface insulation metal wire to form a composite metal wire.
The technical scheme is further improved and refined, and the bare metal wire comprises a metal core wire with insulated surface skin to form a composite metal wire.
The technical scheme is further improved and refined, and the bare metal wire and the surface insulation metal wire are combined together in a winding mode to form the composite metal wire.
The technical scheme is further improved and refined, and the surface insulated metal wire is an enameled wire.
The invention has the advantages of reasonable design, simple structure, reasonable design and simple structure, and can effectively deal with the illegal invasion caused by equipotential bridging shearing or the illegal invasion caused by opening the metal wire up and down to form a metal fence gap or deal with the two illegal invasion simultaneously.
Drawings
FIG. 1 is a schematic diagram of an equipotential cross-over intrusion method.
Fig. 2 is a schematic view of a method of opening a breach by an insulator.
Fig. 3 is a schematic diagram of the connection of the high voltage electronic fence alarm system.
Fig. 4 is a schematic diagram of a positive and negative high voltage alternative scheme of the high voltage electronic fence alarm system.
Fig. 5 is a schematic diagram of a composite metal wire scheme of the high voltage electronic fence alarm system.
Fig. 6 is a schematic diagram of a scheme of combining a composite metal wire and positive and negative alternating high voltage of the high-voltage electronic fence alarm system.
Fig. 7 is a partial structure diagram of a composite metal line.
In the figure, a defense area 01 high-low voltage converter 02 alarms a controller 03 and an alarm 04.
Detailed Description
Example 1
As shown in fig. 3-4, a positive and negative high voltage alternative scheme is adopted, a high voltage electronic fence alarm system comprises a defense area 01, a high voltage and low voltage converter 02, an alarm controller 03 and an alarm 04, the defense area 01 comprises two fence posts 05 and four metal wires arranged on the fence posts, one ends of a first metal wire 06 and a third metal wire 08 are connected, the other end of the first metal wire is connected with the high voltage and low voltage converter 02 to form a loop, one ends of a second metal wire 07 and a fourth metal wire 08 are connected, the other end of the second metal wire is connected with the high voltage and low voltage converter 02 to form a loop, the high voltage and low voltage converter 02 applies positive high voltage to the first metal wire 06 and the third metal wire 08, and the high voltage and low voltage converter 02 applies negative high voltage to the second metal wire 07 and the fourth metal wire 09; the high-low voltage converter 02 is connected with the alarm 04 through the alarm controller 03.
Example 2
As shown in fig. 3, 5 and 7, a composite metal wire scheme is adopted, a high-voltage electronic fence alarm system comprises a defense area 01, a high-voltage and low-voltage converter 02, an alarm controller 03 and an alarm 04, wherein the defense area 01 comprises two fence posts 05 and two metal wires arranged on the fence posts 05, the metal wires are composite metal wires formed by compounding a bare metal wire 16 and a skin insulation metal wire 17, one ends of a first composite metal wire 10 and a second composite metal wire 11 are connected, the skin insulation metal wire at the other end is connected to the high-voltage and low-voltage converter 02 to form a loop, and the high-voltage and low-voltage converter 02 applies high voltage to the skin insulation metal wires of the first composite metal wire 10 and the second composite metal wire 11; one end of the metal core of the skin insulated metal wire 17 of the first composite metal wire 10 or the second composite metal wire 11 is connected with one end of the bare metal wire 16; wrapping a bare metal wire outside the surface insulated metal wire to form a composite metal wire or wrapping a surface insulated metal core wire inside the bare metal wire to form a composite metal wire or combining the bare metal wire and the surface insulated metal wire in a winding mode to form the composite metal wire; the surface insulated metal wire is an enameled wire.
Example 3
As shown in fig. 3 and 6-7, in combination with embodiments 1 and 2, a scheme of combining a composite metal wire with positive and negative alternate high voltages is adopted, a defense area 01 includes two fence posts 05 and four metal wires arranged on the fence posts, one ends of a first composite metal wire 13 and a third composite metal wire 15 are connected, a skin insulation metal wire at the other end is connected to a high-low voltage converter 02 to form a loop, one ends of a second composite metal wire 14 and a fourth composite metal wire 16 are connected to form a loop, a skin insulation metal wire at the other end is connected to the high-low voltage converter 02, the high-low voltage converter 02 applies a positive high voltage to the skin insulation metal wires of the first composite metal wire 13 and the third composite metal wire 15, and applies a negative high voltage to the skin insulation metal wires of the second composite metal wire 14 and the fourth composite metal wire 16; one end of the metal core of the skin insulated metal wire of the first composite metal wire 13 or the third composite metal wire 15, the first composite metal wire 14 or the third composite metal wire 16 is connected with one end of the bare metal wire.
Because of the limited character expression, there exist practically unlimited specific structures, and it will be apparent to those skilled in the art that a number of improvements, decorations, or changes may be made without departing from the principles of the present invention, or the above technical features may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments.
Claims (1)
1. A high-voltage electronic fence alarm system is characterized in that: the high-voltage and low-voltage protection system comprises a plurality of protection areas, high-voltage and low-voltage converters, an alarm controller and an alarm, wherein each protection area comprises a plurality of fence posts and an even number of metal wires which are arranged on the fence posts, one end of each two metal wires in the same protection area is connected, the other end of each two metal wires is connected to the high-voltage and low-voltage converters to form a loop, and the high-voltage and low-voltage converters apply high voltage to each metal wire; the high-low voltage converter is connected with the alarm through the alarm controller; the system adopts a composite metal wire scheme or a scheme of combining a composite metal wire and positive and negative alternate high voltage;
scheme of the composite metal wire: the metal wires are composite metal wires formed by compounding bare metal wires and surface insulation metal wires, one end of each two composite metal wires in the same defense area is connected, the surface insulation metal wire at the other end is connected to the high-low voltage converter to form a loop, and the high-low voltage converter applies high voltage to the surface insulation metal wire of each composite metal wire simultaneously; one end of the metal inner core of the surface insulated metal wire, which is far away from one end of the high-low voltage converter, of one or two composite metal wires in the same loop is connected with one end of the bare metal wire;
the scheme of combining the composite metal wire with positive and negative alternating high voltage is as follows: the metal wires are composite metal wires formed by compounding bare metal wires and surface insulation metal wires, one end of each two composite metal wires in the same defense area is connected, the surface insulation metal wire at the other end is connected to a high-low voltage converter to form a loop, the high-low voltage converter applies positive high voltage or negative high voltage to the surface insulation metal wires of the two composite metal wires in the same loop at the same time, the surface insulation metal wire of one composite metal wire is positive high voltage, and the surface insulation metal wire of one composite metal wire is negative high voltage; one end of the metal inner core of the surface insulated metal wire, which is far away from one end of the high-low voltage converter, of one or two composite metal wires in the same loop is connected with one end of the bare metal wire;
the bare metal wire and the surface insulation metal wire are combined together in a winding mode to form a composite metal wire;
the surface insulated metal wire is an enameled wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810659082.9A CN108831079B (en) | 2018-06-25 | 2018-06-25 | High-voltage electronic fence alarm system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810659082.9A CN108831079B (en) | 2018-06-25 | 2018-06-25 | High-voltage electronic fence alarm system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108831079A CN108831079A (en) | 2018-11-16 |
| CN108831079B true CN108831079B (en) | 2021-07-13 |
Family
ID=64138423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810659082.9A Active CN108831079B (en) | 2018-06-25 | 2018-06-25 | High-voltage electronic fence alarm system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108831079B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9809901D0 (en) * | 1998-05-09 | 1998-07-08 | Rutland Electric Fencing Compa | Improvements relating to security fencing |
| CN1523612A (en) * | 2003-09-12 | 2004-08-25 | 上海电力修造工程有限公司 | High voltage wire of blocking type electronic circumference detector |
| CN2703088Y (en) * | 2004-01-05 | 2005-06-01 | 上海宇障工贸有限公司 | Intelligent electronic fence |
| CN201812351U (en) * | 2010-07-15 | 2011-04-27 | 上海稳普智能科技有限公司 | Electronic fence system with externally-triggered high-and-low-voltage switching |
| CN201812350U (en) * | 2010-07-15 | 2011-04-27 | 上海稳普智能科技有限公司 | Internal triggering high/low voltage switching electronic fence system |
| CN102999985B (en) * | 2011-09-15 | 2014-10-08 | 上海广拓信息技术有限公司 | Six-wire system pulse electronic fence main engine and working method thereof |
| CN205247533U (en) * | 2015-11-24 | 2016-05-18 | 杨文煌 | Shearing prevention electronic fence |
-
2018
- 2018-06-25 CN CN201810659082.9A patent/CN108831079B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108831079A (en) | 2018-11-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11802920B2 (en) | Safety ground wire monitoring and alarm systems | |
| CN108831079B (en) | High-voltage electronic fence alarm system | |
| Podporkin et al. | Lightning protection of distribution lines by long flashover arresters (LFA) | |
| CN201707746U (en) | Electronic fence warning system | |
| US20170076574A1 (en) | System and method for protecting restricted-access areas against intrusions by pedestrians and/or non-cab vehicles in general, with access permitted for vehicles with a cab, including convertible vehicles with closed top | |
| CN205805154U (en) | A kind of fence | |
| US4132987A (en) | Security system | |
| CN205805149U (en) | A kind of security protection alloy wire rail bar | |
| CN205788658U (en) | Multi-functional peace fire-fighting verifying attachment | |
| CN210466606U (en) | Security monitoring system for subarea electronic fence | |
| CN108802550A (en) | A kind of low-voltage leakage current monitoring prior-warning device | |
| KR200406263Y1 (en) | A structure of lead terminal with wire for ground rod | |
| CN215450350U (en) | Wall, post wall dress type perimeter pulse fence alarm system | |
| CN208352005U (en) | A kind of flame retardant cable | |
| CN216118990U (en) | Intrusion detection anti-crossing electronic fence system | |
| CN1131581C (en) | Equipotential-type autoamtic lightning arrester | |
| JP4050929B2 (en) | Lightning protection method for electrical facilities having terminal units | |
| CN210381416U (en) | Prison perimeter high voltage electric network intellectual detection system device | |
| JP2005218406A (en) | Conductive cover for electric fence | |
| JP4359002B2 (en) | Lightning protection structure of building | |
| CN104631906A (en) | Novel electric palisade isolating system | |
| SU1661815A1 (en) | Device for site security protection | |
| Macalindin | Advantages of a low impedance linear magnetic microphonic sensor cable | |
| JP3204465U (en) | Electric fence | |
| JPS6137847B2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |