CN205844398U - High-voltage fence false alarm prevention device - Google Patents
High-voltage fence false alarm prevention device Download PDFInfo
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- CN205844398U CN205844398U CN201620569765.1U CN201620569765U CN205844398U CN 205844398 U CN205844398 U CN 205844398U CN 201620569765 U CN201620569765 U CN 201620569765U CN 205844398 U CN205844398 U CN 205844398U
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Abstract
The open a kind of high-voltage fence false alarm prevention device of this utility model, including: transformator, protection module, no-load voltage ratio module, central processing module and alarm module；Enclosure wall high-voltage fence is connected to the secondary side of transformator; the primary side of transformator is connected with protection module; the outlet side of protection module is connected with no-load voltage ratio module; central processing module includes: judging unit; for by judge the rate of change of low voltage detection that described no-load voltage ratio module exports judge power network current climbing speed whether more than setting value, central processing module outfan connects alarm module.Judge that power network current is slowly to rise or steeply rise by the rate of change of the DC voltage of detection no-load voltage ratio module output, thus still someone touches net to judge environmental factors, prevent from occurring on high-voltage fence under various vile weathers and complex environment that the excessive phenomenon of brownout, electric current is mistaken for electrical network and has people to touch net or malice short circuit, cause alarm device false alarm.
Description
Technical field
This utility model belongs to the technical field of signal and alarm device, particularly relates to a kind of prison high-voltage fence used anti-error
Alarm device.
Background technology
The alarm device that prison, detention house use at present uses high-voltage fence equipment, i.e. when the electrical network being arranged on enclosure wall
When someone touches net or be the most short-circuit, when detection device detects curent change, notice alarm device is reported to the police.
But, under high-voltage fence equipment is in vile weather and complex environment, like rain, the weather such as mist, ice and snow time, enclosure wall
Power network current slowly can rise due to the increase of leakage current, the phenomenon that brownout, electric current are excessive, now high-tension electricity occurs
Net equipment can be mistaken for someone and touch net or malice short circuit, thus causes warning device false alarm.
Summary of the invention
In view of this, the utility model proposes a kind of high-voltage fence false alarm prevention device.In order to the embodiment disclosed
Some aspects have a basic understanding, shown below is simple summary.This summarized section is not extensive overview, is not to want
Determine key/critical component or describe the protection domain of these embodiments.Its sole purpose is to present by simple form
Some concepts, in this, as the preamble of following detailed description.
This utility model adopts the following technical scheme that
In some optional embodiments, it is provided that a kind of high-voltage fence false alarm prevention device, including: transformator, protection mould
Block, no-load voltage ratio module, central processing module and alarm module；Enclosure wall high-voltage fence is connected to the secondary side of described transformator, described
The primary side of transformator is connected with described protection module, and described protection module includes that two fuses, two fuses set respectively
Put on the live wire of alternating voltage and on zero line；The outlet side of described protection module is connected with described no-load voltage ratio module, described no-load voltage ratio
Module is used for power network current being converted into low voltage detection and transmitting extremely described central processing module, including: the first electric current
Transformer and the second current transformer, the secondary side of described first current transformer is with described second current transformer primary side even
Connecing, the primary side of described first current transformer connects the live wire of alternating voltage, and the secondary side of described second current transformer is even
It is connected to the input of described central processing module；Described central processing module includes: judging unit, for by judging described change
Judge that whether power network current climbing speed is more than setting value than the rate of change of the low voltage detection of module output；Described
Central processing module outfan connects alarm module, for reporting to the police when power network current climbing speed is more than setting value, and bag
Include: alarm bell and warning lamp.
In some optional embodiments, it is provided for being connected external control between described transformator with described protection module
The control module of point, including: A.C. contactor.
In some optional embodiments, described high-voltage fence false alarm prevention device, also include: air switch, exchange
The live wire of voltage and zero line are connected with described protection module by air switch.
In some optional embodiments, the model of described first current transformer is LMK-0.66, and no-load voltage ratio is 50/5A,
By the detection electric current that power network current no-load voltage ratio is no more than 5A.
In some optional embodiments, described judging unit is built-in for processing data and exporting the monolithic of control signal
Machine, described single-chip microcomputer model is STC12C5410AD, and described alarm module is connected to the outfan of described single-chip microcomputer, when electrical network electricity
When stream climbing speed is more than setting value, alarm module described in described Single-chip Controlling is reported to the police.
Beneficial effect: judge that power network current is slow by the rate of change of the DC voltage of detection no-load voltage ratio module output
Rise and still steeply rise, thus still someone touches net to judge environmental factors, prevent at various vile weathers and complicated ring
Occur on high-voltage fence under border that the excessive phenomenon of brownout, electric current is mistaken for electrical network and has people to touch net or malice short circuit, cause
Alarm device false alarm.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model high-voltage fence false alarm prevention device；
Fig. 2 is circuit theory diagrams of the present utility model.
Detailed description of the invention
The following description and drawings illustrate specific embodiments of the present invention fully, to enable those skilled in the art to
Put into practice them.Other embodiments can include structure, logic, electric, process and other change.Embodiment
Only represent possible change.Unless explicitly requested, otherwise individually components and functionality is optional, and the order operated is permissible
Change.The part of some embodiments and feature can be included in or replace part and the feature of other embodiments.
As illustrated in fig. 1 and 2, in some illustrative embodiments, it is provided that a kind of high-voltage fence false alarm prevention device, bag
Include: transformator 1, control module 2, protection module 3, no-load voltage ratio module 4, air switch QK1, central processing module 5 and alarm module
6。
The secondary side of transformator 1 connects the high-voltage fence being arranged on enclosure wall, and the primary side of described transformator 1 connects protection
Module 3, described protection module 3 plays a protective role, it is to avoid main circuit current is crossed senior general's device and burnt.Protection module 3 includes two
Individual fuse, fuse RD1 is arranged on the live wire of alternating voltage, and fuse RD2 is arranged on the zero line of alternating voltage, wherein
Alternating voltage is 220V alternating voltage or 380V alternating voltage.
The outlet side of protection module 3 connects no-load voltage ratio module 4, and no-load voltage ratio module 4 is for changing the power network current in major loop
Become low voltage detection and transmit to central processing module 5.No-load voltage ratio module 4 includes: the first current transformer 7 and the second electric current
Transformer 8, the model of the first current transformer 7 is LMK-0.66, and no-load voltage ratio is 50/5A, is no more than 5A by power network current no-load voltage ratio
Detection electric current, the primary side of the secondary side of the first current transformer 7 and the second current transformer 8 connects.Second Current Mutual Inductance
Device 8, by the DC voltage that detection electric current no-load voltage ratio is no more than 4V, i.e. low voltage detection, is transferred to central processing module 5.The
The primary side of one current transformer 7 connects the live wire of alternating voltage, and the secondary side of the second current transformer 8 is connected to described central authorities
The input of processing module 5, central processing module 5 includes: judging unit 51, for low by judging that no-load voltage ratio module 4 exports
The rate of change of voltage detection signal judges that whether the power network current climbing speed of major loop is more than setting value.Central authorities process mould
Block 5 outfan connects alarm module 6, and alarm module 6 includes: alarm bell and warning lamp.
When the power network current of major loop changes, the DC voltage being transferred to central processing module 5 has corresponding change,
When major loop power network current climbing speed more than setting value, i.e. power network current for steeply rising, now central processing module 5 is sentenced
Breaking as having people to touch net or malice short circuit, send a control signal to alarm module 6, alarm module 6 is reported to the police.Electricity when major loop
Net current rise rate is slowly to rise less than setting value, i.e. power network current, and now central processing module 5 is judged as environmental factors
The electric current caused is too low or too high, does not reports to the police.
Control module 2 is used for connecting external control point, including: A.C. contactor CJ1, A.C. contactor CJ1 are arranged on
On the zero line of alternating voltage and live wire, A.C. contactor CJ1 connects button.
The live wire of alternating voltage and zero line are connected with protection module 3 by air switch QK1.
In some illustrative embodiments, it is judged that unit 51 is built-in for processing data and exporting the monolithic of control signal
Machine, single-chip microcomputer model is STC12C5410AD, and alarm module 6 is connected to the outfan of single-chip microcomputer, when power network current climbing speed
During more than setting value, Single-chip Controlling alarm module 6 is reported to the police.
The zero line of alternating voltage and live wire pass through air switch QK1, then through overcurrent fuse RD1, fuse RD2, by handing over
Being connected to transformator 1 primary side after stream catalyst CJ1 main contacts, transformator 1 secondary side is connected to enclosure wall high-voltage fence, and composition is main
Loop.Live wire pass through the first current transformer 7, the secondary side of the first current transformer 7 pass through the second current transformer 8, second
The secondary side of current transformer 8 accesses single-chip microcomputer again, when the power network current of major loop changes, is transferred to the direct current of single-chip microcomputer
Voltage has corresponding change, and the power network current of major loop is slowly rising or drastically goes up to use current change rate to judge
Rise, confirm that electrical network is touched net and electrical network false alarm.
Above-described embodiment is this utility model preferably embodiment, but embodiment of the present utility model is not by above-mentioned
The restriction of embodiment, other are any without departing from the change made under spirit of the present utility model and principle, modify, substitute,
Combination, simplifies, and all should be the substitute mode of equivalence, all should be included in protection domain of the present utility model.
Claims (5)
1. high-voltage fence false alarm prevention device, it is characterised in that including: transformator, protection module, no-load voltage ratio module, central authorities process
Module and alarm module；Enclosure wall high-voltage fence is connected to the secondary side of described transformator, and the primary side of described transformator is with described
Protection module connects, and described protection module includes that two fuses, two fuses are separately positioned on the live wire of alternating voltage
With on zero line；The outlet side of described protection module is connected with described no-load voltage ratio module, and described no-load voltage ratio module is for turning power network current
Change low voltage detection into and transmit extremely described central processing module, including: the first current transformer and the second Current Mutual Inductance
Device, the secondary side of described first current transformer is connected with described second current transformer primary side, described first Current Mutual Inductance
The primary side of device connects the live wire of alternating voltage, and the secondary side of described second current transformer is connected to described central processing module
Input；Described central processing module includes: judging unit, for by judging that the low-voltage that described no-load voltage ratio module exports is examined
The rate of change surveying signal judges that whether power network current climbing speed is more than setting value；Described central processing module outfan is even
Module taking alarm, for reporting to the police when power network current climbing speed is more than setting value, including: alarm bell and warning lamp.
High-voltage fence false alarm prevention device the most according to claim 1, it is characterised in that described transformator and described protection
It is provided for connecting the control module of external control point between module, including: A.C. contactor.
High-voltage fence false alarm prevention device the most according to claim 1 and 2, it is characterised in that also include: air switch,
The live wire of alternating voltage and zero line are connected with described protection module by air switch.
High-voltage fence false alarm prevention device the most according to claim 3, it is characterised in that described first current transformer
Model is LMK-0.66, and no-load voltage ratio is 50/5A, by the detection electric current that power network current no-load voltage ratio is no more than 5A.
High-voltage fence false alarm prevention device the most according to claim 4, it is characterised in that described judging unit built-in for
Processing data and export the single-chip microcomputer of control signal, described single-chip microcomputer model is STC12C5410AD, and described alarm module connects
At the outfan of described single-chip microcomputer, when power network current climbing speed is more than setting value, warning mould described in described Single-chip Controlling
Block is reported to the police.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620569765.1U CN205844398U (en) | 2016-06-14 | 2016-06-14 | High-voltage fence false alarm prevention device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620569765.1U CN205844398U (en) | 2016-06-14 | 2016-06-14 | High-voltage fence false alarm prevention device |
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| Publication Number | Publication Date |
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| CN205844398U true CN205844398U (en) | 2016-12-28 |
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| CN201620569765.1U Active CN205844398U (en) | 2016-06-14 | 2016-06-14 | High-voltage fence false alarm prevention device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108010245A (en) * | 2017-11-28 | 2018-05-08 | 深圳维思加通信技术有限公司 | Can adaptive power output high-voltage fence detecting system |
-
2016
- 2016-06-14 CN CN201620569765.1U patent/CN205844398U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108010245A (en) * | 2017-11-28 | 2018-05-08 | 深圳维思加通信技术有限公司 | Can adaptive power output high-voltage fence detecting system |
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