CN203644146U - High voltage pulse electronic fence - Google Patents

High voltage pulse electronic fence Download PDF

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Publication number
CN203644146U
CN203644146U CN201320875621.5U CN201320875621U CN203644146U CN 203644146 U CN203644146 U CN 203644146U CN 201320875621 U CN201320875621 U CN 201320875621U CN 203644146 U CN203644146 U CN 203644146U
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China
Prior art keywords
pulse
voltage
module
main control
control module
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CN201320875621.5U
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Chinese (zh)
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不公告发明人
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Guangzhou Ledun Security And Protection Science & Technology Co Ltd
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Guangzhou Ledun Security And Protection Science & Technology Co Ltd
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Abstract

The utility model relates to a high voltage pulse electronic fence which comprises a pulse host and a front end fence. The pulse host comprises a pulse drive module, a main detection module and a main control module. The pulse drive module is electrically connected with the front end fence, and is used for providing high voltage direct current pulse for the front end fence. The main detection module is used for detecting the electric field change of the front end fence, and converting an electric field signal into a main detection signal which can be identified and processed by the main control module. The main control module is electrically connected with the pulse drive module and the main detection module, and is used for controlling the pulse drive module to provide the high voltage direct current pulse for the front end fence and processing the main detection signal from the main detection module. According to the utility model, the pulse host can directly load the high voltage direct current pulse to the front end fence through a high voltage cable; the main detection module detects the electric field change of the front end fence to generate the main detection signal; without a loop formed by a multiple wire system, the detection signal is generated; and the high voltage pulse electronic fence adapts to a variety of terrains and places, and effectively avoids security flaws.

Description

A kind of high voltage pulse electronic enclosure
Technical field
The utility model relates to a kind of fence, is specifically related to a kind of high voltage pulse electronic enclosure.
Background technology
Fence is the anti-more fence of a kind of initiatively invasion, is current state-of-the-art circumference guard against theft and alarm system, and it is made up of pulse main frame and front end fence.Wherein, pulse main frame for generation of with receive high-voltage pulse signal, and produce alerting signal during in net-fault, short circuit or off state at front end fence; Front end fence is the tangible circumference of the member compositions such as fence bracket and metal wire.In recent years; fence constantly rises in security protection industry; obtain widespread use in places such as residential building community, villa, factory, military base, government organs, focused protection units; and be successfully applied to the major projects such as the Olympic Games, World Expo, national grid, become the major product in perimeter alarm field.
At present, have polytype high voltage pulse electronic enclosure on market, comprise single defence area, two defence area, the fence in even many defence areas, to meet the application demand of respective market.But the metal wire of these fences all needs to adopt multiple-way system and meets 2 integral multiple, modal is four-wire system, also there is on this basis the not fence of collinear system such as six line systems, eight line systems, and by many metal wires formation current returns that insulate each other, net-fault, short circuit or off state are detected.Its principle is that after the energising of pulse main frame, emission port forward end fence sends pulse voltage, about 1.5 seconds of time interval transmitting 1 time, about 0.1 second of the time that pulse stops on fence, on front end fence, form the receiving port that pulse is back to behind loop to main frame, this port receives the pulse signal feeding back; Main frame also can be surveyed two resistance values between transmitting terminal simultaneously.Cause and open circuit or short circuit if front end fence suffers to destroy, it is too little that the receiving port of pulse main frame does not receive resistance between pulse signal or two transmitting terminals, and main frame all can send warning.For example, Chinese patent application CN201110083254.0 discloses a kind of pulse electronic fence alarm system, it comprises master control borad, controllable high-voltage generation device and high-voltage detecting device etc., the output terminal of controllable high-voltage generation device is connected with one end of one group of high-pressure metal B alloy wire of pulse electronic fence, every group of high-pressure metal B alloy wire is two, under the control of master control borad, described high-pressure metal B alloy wire is produced to high-voltage pulse; The output terminal of high pressure detection module is corresponding to be respectively connected with high-pressure metal B alloy wire with the high pressure Same Name of Ends of controllable high-voltage generation device, the high-voltage output end of controllable high-voltage generation device, to detect the integrality of high-voltage pulse signal.
But; the occasion that some are special, needs protection and multiple-way system cannot be made in the position surveyed, and front end fence need to be made to an entirety; for example carry out deploying troops on garrison duty separately of door with fence, the mode that multiple-way system forms current return will form security protection leak to protected area.
Utility model content
For the deficiencies in the prior art, the utility model proposes and a kind ofly just can realize without form loop by multiple-way system the high voltage pulse electronic enclosure that net-fault, short circuit or off state are detected, make the metallic object of fence more flexible and changeable, and need not be confined to the linear metal such as alloy wire, steel strand wires material, to adapt to various landform and place, effectively to avoid security protection leak.
In order to achieve the above object, the technical scheme that the utility model adopts is as follows:
A kind of high voltage pulse electronic enclosure, comprises pulse main frame and front end fence, and described pulse main frame comprises pulsed drive module, main detection module and main control module; Wherein: pulsed drive module, it is electrically connected to front end fence, provides high-voltage dc pulse for forward end fence; Main detection module, for detection of the electric field change of front end fence, and converts above-mentioned electric field signal to the main detection signal that can identify and process for main control module; And main control module, it is electrically connected described pulsed drive module and main detection module, provides high-voltage dc pulse for controlling this pulsed drive module forward end fence, and processes the main detection signal of autonomous detection module.
Preferably, described pulse generating module comprises alternating-current pulse generating unit and high-voltage dc pulse output unit; Wherein, this alternating-current pulse generating unit is for generation of alternating-current pulse, and exports this alternating-current pulse to high-voltage dc pulse output unit; This high-voltage dc pulse output unit is used for above-mentioned alternating-current pulse to be converted to high-voltage dc pulse, and exports this high-voltage dc pulse to front end fence.
Preferably, described high-voltage dc pulse output unit is voltage doubling rectifing circuit, and this voltage doubling rectifing circuit is used for promoting output voltage and alternating-current pulse is converted to high-voltage dc pulse.
Preferably, described high-voltage dc pulse output unit also comprises a test circuit for above-mentioned alternating-current pulse is tested, this test circuit comprises rectifier bridge stack, filter capacitor and first optocoupler being electrically connected successively, and the output terminal of this first optocoupler is electrically connected to the input interface of main control module.
Preferably, described main detection module comprises the induction antenna, amplifying circuit, filtering circuit and the not circuit that are electrically connected successively; Wherein, induction antenna is for detection of electric field change the corresponding voltage signal of corresponding output of front end fence, and this voltage signal amplifies processing, after filtering circuit filtering is processed, is transferred into not circuit again through amplifying circuit; Described not circuit is used for converting by above-mentioned the level signal that can identify and process for main control module to through filtering voltage signal after treatment, and this level signal is sent to main control module.
Preferably, described amplifying circuit is the amplifier being made up of two not gate cascades.
Preferably, described amplifying circuit also comprises a high-pass filtering circuit, and this high-pass filtering circuit is electrically connected between two not gates.
Preferably, described pulse main frame also comprises that one is electrically connected to the auxiliary detection module of main control module, its door magnetic detector, passive infrared detector and/or infrared beam interruption detector for being of coupled connections to defence area, and the detection signal of above-mentioned door magnetic detector, passive infrared detector and/or infrared beam interruption detector collection is sent to main control module.
Preferably, described pulse main frame also comprises that one is electrically connected to the alarm linkage module of main control module.
Preferably, described pulse main frame also comprises that one is electrically connected to the communication module of main control module, for setting up the communication connection between host computer.
Compared with prior art, the high-tension cable uniaxially forward end fence that pulse main frame of the present utility model can directly pass through loads high-voltage dc pulse, and the electric field change that detects front end fence by main detection module is to generate the main detection signal for main control module identification and processing, make the utility model just can produce detection signal without form loop by multiple-way system, to make the metallic object of fence more flexible and changeable, and need not be confined to alloy wire, the wire metal constructions such as steel strand wires, to adapt to various landform and place, effectively avoid security protection leak, and in application process, the utility model need to not insulate separately between each alloy wire and fence bracket, only whole fence front end need to be insulated, and, be carried in high-voltage dc pulse on front end fence in playing deterrent effect to person poultry harmless, can effectively avoid meeting accident, reach the object of safety block.Further, when invader forces one's way through the barrier front end fence while entering in protected defence area, the utility model also can carry out auxiliary detection to realize secondary warning function by auxiliary detection module; Meanwhile, pulse main frame of the present utility model can or establish a communications link by communication module and alarm center by alarm linkage module and the interlock of other safety-protection system after detection signal is processed, to improve the safety precaution grade of system.
Accompanying drawing explanation
Fig. 1 is the circuit block diagram of the preferred embodiment of the utility model high voltage pulse electronic enclosure;
Fig. 2 is the circuit diagram of Fig. 1 mesohigh DC pulse output unit;
Fig. 3 is the circuit diagram of main detection module in Fig. 1.
Embodiment
Below, by reference to the accompanying drawings and embodiment, the utility model is described further, understands the utility model technological thought required for protection so that clearer.
Refer to Fig. 1, the utility model relates to a kind of high voltage pulse electronic enclosure, and its preferred embodiments comprises front end fence 100 and pulse main frame 200.
Front end fence 100 is for being laid in the tangible circumference of protected area periphery, and it comprises a metallic object.Based on the technical solution of the utility model, this metallic object can be the various metallic objects such as alloy wire, steel strand wires or stainless steel protection network, and this metallic object is no longer confined to the wire metallic object structure of specifying, and can use the metallic object structure of arbitrary shape.Deploy troops on garrison duty in application process at front end fence 100, only whole front end fence 100 need be insulated, do not need between each alloy wire and fence bracket, to insulate separately as prior art, also do not need to meet the even lines system restriction of metal wire.
Pulse main frame 200 comprises main control module 210, pulsed drive module 220, main detection module 230, auxiliary detection module 240, alarm linkage module 250 and communication module 260.
Wherein, pulsed drive module 220 is electrically connected to front end fence 100, provides high-voltage dc pulse for the metallic object of forward end fence 100.This pulsed drive module 220 comprises alternating-current pulse generating unit 221 and high-voltage dc pulse output unit 222.
Alternating-current pulse generating unit 221 is electrically connected to the output terminal of this main control module 210, and it is for generation of alternating-current pulse, and exports this alternating-current pulse to high-voltage dc pulse output unit 222.This alternating-current pulse generating unit 221 adopts controllable type alternating-current pulse generating means, and user can freely be switched high low voltage mode according to different demands.Near daytime or have personnel to be switched to action of low-voltage pulse pattern when operation fence, can make the pulse hitting dynamics of front end fence reduce; In night or the high alert time of needs, can return to high-voltage pulse pattern.
High-voltage dc pulse output unit 222 is electrically connected to the output terminal of alternating-current pulse generating unit 221, it is for above-mentioned alternating-current pulse is converted to high-voltage dc pulse, and by a high-tension cable by unidirectional this high-voltage dc pulse metallic object that exports front end fence to.Hence one can see that, and in the utility model, pulse main frame carrys out forward end fence transmitted signal without consist of loop multiple-way system, makes the metallic object of the utility model fence more flexible and changeable, to adapt to various landform and place, effectively to avoid security protection leak.
Particularly, this high-voltage dc pulse output unit 222 adopts voltage doubling rectifing circuit 2221, this voltage doubling rectifing circuit 2221 is for promoting output voltage and alternating-current pulse being converted to high-voltage dc pulse, and output current is reduced, so that reduces output pulse output electric weight and the output energy of pulse.Voltage doubling rectifing circuit 2221 of the present utility model can play the detection sensitivity that improves pulse main frame 200 by the measure of boosting, and the output current that is carried in the high-voltage dc pulse on front end fence 100 after voltage multiplying rectifier is reduced to below 1/6 of alternating-current pulse output current, reach below 5mA, according to the requirement of GB " GB7946-2008 pulse electronic fence and installation thereof and safe operation ", pulse output electric weight Q≤2.5mc, pulse output electric weight W≤5.0J, according to formula Q=I*t, W=Q*U, according to GB t=0.1s, output electric weight Q=5ma*0.1s=0.5mc, W=0.5mc*8000V=4.0J, all far below national safety standard, therefore be carried in the high-voltage dc pulse on front end fence 100, even if be operated under the high pressure mode of 8000V, in playing deterrent effect also to person poultry harmless, can effectively avoid meeting accident, reach the object of safety block.
As preferably, high-voltage dc pulse output unit 222 also comprises a test circuit 2222 for above-mentioned alternating-current pulse is tested, this test circuit 2222 comprises rectifier bridge stack BD1, the filter capacitor C57 and the first optocoupler U11 that are electrically connected successively, and the output terminal of this first optocoupler U11 is electrically connected to the input interface of main control module 210.
As shown in Figure 2, for the circuit diagram of high-voltage dc pulse output unit 222 of the present utility model, this high-voltage dc pulse output unit 222 comprises transformer T1, high-voltage diode D10 to D15, high-voltage capacitance C51 to C56, rectifier bridge stack BD1, filter capacitor C57, resistance R 51 and the first optocoupler U11, wherein, transformer T1 comprises armature winding L1, secondary main winding L2 and secondary auxiliary winding L 3.
The Same Name of Ends of this armature winding L1 is connected to the first output terminal of this alternating-current pulse generating unit 221, and the different name end of armature winding L1 is connected to the second output terminal of this alternating-current pulse generating unit 221, the Same Name of Ends of secondary main winding L2 is connected to the anode of this high-voltage diode D15 by high-voltage capacitance C52, high-voltage capacitance C54 and the high-voltage capacitance C56 of series connection successively, the negative electrode of this high-voltage diode D15 is connected to the different name end of secondary main winding L2, the different name end ground connection of this secondary main winding L2 by high-voltage capacitance C55, high-voltage capacitance C53 and the high-voltage capacitance C51 of series connection successively, the negative electrode of this high-voltage diode D10 is connected to the Same Name of Ends of secondary main winding L2, the negative electrode of this high-voltage diode D10 anode and this high-voltage diode D11 is all connected between high-voltage capacitance C51 and high-voltage capacitance C53, the negative electrode of the anode of this high-voltage diode D11 and this high-voltage diode D12 is all connected between high-voltage capacitance C52 and high-voltage capacitance C54, the negative electrode of the anode of this high-voltage diode D12 and this high-voltage diode D13 is all connected between high-voltage capacitance C53 and high-voltage capacitance C55, the negative electrode of the anode of this high-voltage diode D13 and this high-voltage diode D14 is all connected between high-voltage capacitance C54 and high-voltage capacitance C56.The Same Name of Ends of secondary auxiliary winding L 3 is connected to the first ac input end of rectifier bridge stack BD1, and the different name end of secondary auxiliary winding L 3 is connected to the second ac input end of rectifier bridge stack BD1; The direct-flow positive pole end of this rectifier bridge stack BD1 connects the positive pole of this filter capacitor C57, and the direct-flow positive pole end of this rectifier bridge stack BD1 connects the direct current negative pole end of rectifier bridge stack BD1 by this filter capacitor C57; The anodic bonding of the illuminator of the first optocoupler U11 is to the direct-flow positive pole end of rectifier bridge stack BD1, and the negative electrode of the illuminator of the first optocoupler U11 is connected to the direct current negative pole end of rectifier bridge stack BD1 by this resistance R 51; The illuminator of the first optocoupler U11 is connected to the high-voltage dc pulse test interface of main control module 210.
Above-mentioned alternating-current pulse boosts and processes to form ac high-voltage pulse, for example 500 ~ 1500V etc. at secondary main winding L2 through transformer T1.This high-voltage diode D10 to D15 and high-voltage capacitance C51 to C56 form voltage doubling rectifing circuit 2221, and in the present embodiment, it is selected is 6 voltage doubling rectifing circuits; The anode of this high-voltage diode D15 exports the high-voltage dc pulse through conversion, for example 3000-8000V.In addition, above-mentioned alternating-current pulse through transformer T1 in secondary auxiliary winding L 3 step-down processing, for example produce the voltage of 5V, and successively by being connected to the high-voltage dc pulse test interface of main control module 210 after rectifier bridge stack BD1 rectification, filter capacitor C57 filtering, resistance R 51 and the first optocoupler U11, with the test circuit 2222 that is configured for above-mentioned alternating-current pulse to test, thereby guarantee reliability and the accuracy that pulse main frame 200 detects.
Main detection module 230 is for detection of the electric field change of front end fence, and converts above-mentioned electric field signal to can identify and process for main control module 210 main detection signal.Particularly, this main detection module 230 comprises the induction antenna 231, amplifying circuit 232, filtering circuit 233 and the not circuit 234 that are electrically connected successively.Wherein, induction antenna 231 is for detection of electric field change the corresponding voltage signal of corresponding output of front end fence 100, it is arranged in the position near the metallic object of front end fence 100, and by this amplifying circuit 232, above-mentioned voltage signal is amplified processing, after filtering circuit 233 filtering are processed, is transferred into not circuit 234 successively, this not circuit 234 is for converting by above-mentioned the level signal that can identify and process for main control module 210 to through filtering voltage signal after treatment, and this level signal is sent to main control module.In the present embodiment, amplifying circuit 232 is preferably adopted as the amplifier being made up of two not gate cascades, and is also connected with a high-pass filtering circuit between two not gates.
As shown in Figure 3, be the circuit diagram of the main detection module 230 of the utility model, this main detection module 230 comprises antenna E1, the first not gate U16A to the four not gate U16D, diode D1, capacitor C 7 to C8, resistance R 75 to R81 and the second optocoupler OC13.
The output terminal of this antenna E1 is successively through resistance R 78, resistance R 75 and resistance R 76 ground connection, and one end of this resistance R 79 is connected between resistance R 78 and resistance R 75, and the other end of this resistance R 79 connects the input end of the first not gate U16A; The output terminal of the first not gate U16A is connected direct supply VCC through capacitor C 7 with resistance R 77 successively; The input end of the second not gate U16B is connected between capacitor C 7 and resistance R 77, and the output terminal of this second not gate U16B connects the anode of this diode D1, and the negative electrode of this diode D1 is through the input end of resistance R connection after 80s the 3rd not gate U16C; The input end of the 3rd not gate U16C is by resistance R 81 ground connection, also by capacitor C 8 ground connection, the output terminal of the 3rd not gate U16C connects the input end of the 4th not gate U16D, and the output terminal of the 4th not gate U16D exports the main detection interface of main control module 210 to through the second optocoupler OC13.
Above-mentioned the first not gate U16A and the second not gate U16B form amplifying circuit, for the voltage signal of above-mentioned antenna E1 output is amplified to processing; C7 and R77 composition high-pass filtering circuit, C8 and R80 composition low-pass filter circuit; The 3rd not gate U16C and the 4th not gate U16D composition not circuit, convert for this Transistor-Transistor Logic level signal that can identify and process for main control module 210 to through filtering voltage signal after treatment, and be coupled to the main detection interface of main control module 210 through the second optocoupler OC13.Wherein, the first not gate U16A to the four not gate U16D all adopt MC74HC14AD chip.
Main control module 210, it is electrically connected pulsed drive module 220 and main detection module 230, provides high-voltage dc pulse for controlling these pulsed drive module 230 forward end fences 100, and processes the main detection signal of autonomous detection module 210.Particularly, this main control module 210 can adopt single chip computer AT 89S52 as control core, and with the IO port of IO mouth extended chip 82C55 expansion single chip computer AT 89S52, multiple input interfaces such as the auxiliary detection interface which is provided with main detection interface for being electrically connected with main detection module, be electrically connected for the high-voltage dc pulse test interface that is electrically connected with high-voltage dc pulse output unit 222 with this auxiliary detection module 240, and the multiple output interfaces that are electrically connected with this alarm linkage module 250 and this communication module 260.
Auxiliary detection module 240 is electrically connected to main control module 210, its door magnetic detector, passive infrared detector and/or infrared beam interruption detector for being of coupled connections to defence area, and the detection signal of above-mentioned door magnetic detector, passive infrared detector and/or infrared beam interruption detector collection is sent to main control module, specifically exist, above-mentioned detection signal is sent to the auxiliary detection interface of auxiliary detection module 240 main control modules 210 after light-coupled isolation.It should be noted that; auxiliary detector in defence area can also be the Safety defence detector of other types; when invader forces one's way through the barrier front end fence while entering in protected defence area, can provide secondary alerting signal by this auxiliary detection module 240, intrusion behavior is carried out to sound and light alarm.
Alarm linkage module 250 is electrically connected to main control module 210, for realizing and being connected with other safety-protection system, improves the safety precaution grade of system, for example, trigger that monitor is recorded a video etc.
Communication module 260 is electrically connected to main control module 210, and it is for setting up the communication connection between host computer, and for example this communication module and alarm center establish a communications link, and realize network calculations machine monitoring, further to improve the safety precaution grade of fence.
For a person skilled in the art, can be according to technical scheme described above and design, make other various corresponding changes and distortion, and these all changes and distortion all should belong to the protection domain of the utility model claim within.

Claims (10)

1. a high voltage pulse electronic enclosure, comprises pulse main frame and front end fence, it is characterized in that, described pulse main frame comprises pulsed drive module, main detection module and main control module; Wherein:
Pulsed drive module, it is electrically connected to front end fence, provides high-voltage dc pulse for forward end fence;
Main detection module, for detection of the electric field change of front end fence, and converts above-mentioned electric field signal to the main detection signal that can identify and process for main control module;
Main control module, it is electrically connected described pulsed drive module and main detection module, provides high-voltage dc pulse for controlling this pulsed drive module forward end fence, and processes the main detection signal of autonomous detection module.
2. high voltage pulse electronic enclosure as claimed in claim 1, is characterized in that, described pulse generating module comprises alternating-current pulse generating unit and high-voltage dc pulse output unit; Wherein, this alternating-current pulse generating unit is for generation of alternating-current pulse, and exports this alternating-current pulse to high-voltage dc pulse output unit; This high-voltage dc pulse output unit is used for above-mentioned alternating-current pulse to be converted to high-voltage dc pulse, and exports this high-voltage dc pulse to front end fence.
3. high voltage pulse electronic enclosure as claimed in claim 2, is characterized in that, described high-voltage dc pulse output unit is voltage doubling rectifing circuit, and this voltage doubling rectifing circuit is used for promoting output voltage and alternating-current pulse is converted to high-voltage dc pulse.
4. high voltage pulse electronic enclosure as claimed in claim 3, it is characterized in that, described high-voltage dc pulse output unit also comprises a test circuit for above-mentioned alternating-current pulse is tested, this test circuit comprises rectifier bridge stack, filter capacitor and first optocoupler being electrically connected successively, and the output terminal of this first optocoupler is electrically connected to the input interface of main control module.
5. high voltage pulse electronic enclosure as claimed in claim 1, is characterized in that, described main detection module comprises the induction antenna, amplifying circuit, filtering circuit and the not circuit that are electrically connected successively; Wherein, induction antenna is for detection of electric field change the corresponding voltage signal of corresponding output of front end fence, and this voltage signal amplifies processing, after filtering circuit filtering is processed, is transferred into not circuit again through amplifying circuit; Described not circuit is used for converting by above-mentioned the level signal that can identify and process for main control module to through filtering voltage signal after treatment, and this level signal is sent to main control module.
6. high voltage pulse electronic enclosure as claimed in claim 5, is characterized in that, described amplifying circuit is the amplifier being made up of two not gate cascades.
7. high voltage pulse electronic enclosure as claimed in claim 6, is characterized in that, described amplifying circuit also comprises a high-pass filtering circuit, and this high-pass filtering circuit is electrically connected between two not gates.
8. the high voltage pulse electronic enclosure as described in any one in claim 1-7, it is characterized in that, described pulse main frame also comprises that one is electrically connected to the auxiliary detection module of main control module, its door magnetic detector, passive infrared detector and/or infrared beam interruption detector for being of coupled connections to defence area, and the detection signal of above-mentioned door magnetic detector, passive infrared detector and/or infrared beam interruption detector collection is sent to main control module.
9. the high voltage pulse electronic enclosure as described in any one in claim 1-7, is characterized in that, described pulse main frame also comprises that one is electrically connected to the alarm linkage module of main control module.
10. the high voltage pulse electronic enclosure as described in any one in claim 1-7, is characterized in that, described pulse main frame also comprises that one is electrically connected to the communication module of main control module, for setting up the communication connection between host computer.
CN201320875621.5U 2013-12-25 2013-12-25 High voltage pulse electronic fence Withdrawn - After Issue CN203644146U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103745543A (en) * 2013-12-25 2014-04-23 广州乐盾安防科技有限公司 A high-voltage pulse electronic fence
WO2017202344A1 (en) * 2016-05-27 2017-11-30 孙建华 Animal-sensing security patch and use method therefor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103745543A (en) * 2013-12-25 2014-04-23 广州乐盾安防科技有限公司 A high-voltage pulse electronic fence
CN103745543B (en) * 2013-12-25 2016-08-17 王亮 A kind of high voltage pulse electronic enclosure
WO2017202344A1 (en) * 2016-05-27 2017-11-30 孙建华 Animal-sensing security patch and use method therefor

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Granted publication date: 20140611

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