CN106128002A - A kind of intelligent security guard early warning system - Google Patents
A kind of intelligent security guard early warning system Download PDFInfo
- Publication number
- CN106128002A CN106128002A CN201610720946.4A CN201610720946A CN106128002A CN 106128002 A CN106128002 A CN 106128002A CN 201610720946 A CN201610720946 A CN 201610720946A CN 106128002 A CN106128002 A CN 106128002A
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- electrically connected
- processor
- warning system
- early warning
- security guard
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- 238000004891 communication Methods 0.000 claims abstract description 16
- 238000012545 processing Methods 0.000 claims abstract description 15
- 238000012544 monitoring process Methods 0.000 claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- 238000005070 sampling Methods 0.000 claims description 11
- 239000000779 smoke Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 238000001514 detection method Methods 0.000 abstract description 10
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000004044 response Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 5
- 238000010891 electric arc Methods 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical class [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000004899 motility Effects 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 230000010181 polygamy Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
- G08B17/117—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means by using a detection device for specific gases, e.g. combustion products, produced by the fire
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/12—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Alarm Systems (AREA)
- Fire Alarms (AREA)
Abstract
The invention discloses a kind of intelligent security guard early warning system, including power supply, processor, memorizer and alarm device, described power supply is electrically connected with the input of processor, described wireless communication module signal is connected to remote monitoring terminal, described processor is connected by Signal acquiring and processing unit sensor cluster, and the outfan of described processor is connected by protocol conversion module electric power fire monitor.This intelligent security guard early warning system, compared with traditional security pre-warning system, the electric power fire monitor of the present invention uses modified model HHT technology for detection harmonic wave, its APF wave filter fast response time in parallel, series parallel resonance can be suppressed, it is achieved that dynamic compensation, the advantage that active filter has had PPF and APF concurrently, can effectively suppress multiple harmonic and reactive-load compensation is provided, it is adaptable to high voltage distribution network.
Description
Technical field
The invention belongs to electric power monitoring technical field, be specifically related to a kind of intelligent security guard early warning system.
Background technology
Along with developing rapidly of economy and improving constantly of living standards of the people, the demand of electric energy is constantly increased by people,
Requirement to safe power supply is more and more higher.Nationwide integrated power grid scale, the formation of integration；The gradually enhancing of interregional interconnection；
Single-machine capacity and the continuous of overall system capacity are risen；The formation of large-scale electrical power system；The structure of New-energy power system；Superelevation
Pressure, the appearance of extra-high voltage long distance power transmission；The structure and the method for operation that make power system become increasingly complex.Answering of power system
What polygamy directly threaten that some local dip of safe and stable operation of system this may result in having a power failure on a large scale occurs or makes system
Stability problem sharpening.When power system has an accident, particularly occur to destroy system stability and uncontrollable pernicious
During chain reaction, accident scope is big, and power off time is long, and the consequence caused is the most serious.When electric network composition is weak, mismanagement and
When lacking again the technical measures of necessity, the fault of some single equipment is it is possible to develop into the large-scale blackout of the whole network.
Voltage of power line fault is also the principal element causing voltage of power fire, therefore by detection voltage of power line
The operation conditions on road forecasts that fire is also one of research direction of detection.The most conventional non-destructive electric wire detection side
Method is mainly based upon the detection of electric wire surface temperature, such as temperature sensing cable formula, thermistor-type, Optic Fibre Temperature Sensor and infrared
Thermal imagery formula etc..For electric wire fault, frequently with guard method for installing corresponding protection device, such as chopper residue electricity
Stream action protecting device etc..This kind of protection device is typically all based on electromagnetic principle, is limited by Cleaning Principle etc.,
Can not effectively process the disaster hidden-trouble that electric arc causes, and movement time is long, it is easy to produce wrong report and fail to report phenomenon.
Summary of the invention
It is an object of the invention to provide a kind of intelligent security guard early warning system, with asking of solving to propose in above-mentioned background technology
Topic.
For achieving the above object, the present invention provides following technical scheme: a kind of intelligent security guard early warning system, including power supply,
Processor, memorizer and alarm device, described power supply is electrically connected with the input of processor, described memorizer and processor
Input is electrically connected with, and the outfan of described processor connects LCD display and wireless communication module, described wireless telecommunications mould
Block signal is connected to remote monitoring terminal, and described processor is connected by Signal acquiring and processing unit sensor cluster, institute
The outfan stating processor has electric power fire monitor by protocol conversion module connection.
Preferably, described electric power fire monitor include single-chip microcomputer and 485 drive modules, the outfan of described single-chip microcomputer with
485 drive module to be electrically connected with, and described 485 drive the outfan of module to be electrically connected at protocol conversion module, described single-chip microcomputer
Outfan be electrically connected with SPWM control circuit, the outfan of described SPWM control circuit is electrically connected with APF in parallel filtering
Device, the input of described single-chip microcomputer is electrically connected with power balance and sampling module, three-phase current collecting unit and electric leakage sampling
It is electrically connected with three-phase current circuit with processing unit, described power balance and sampling module, described three-phase current collecting unit
Being electrically connected with current transformer, described current transformer is electrically connected with three-phase current circuit, and described electric leakage is sampled and processes
Unit is electrically connected with ZCT, and described ZCT is electrically connected with three-phase current circuit.
Preferably, the outfan of described single-chip microcomputer is also electrically connected with alarm module.
Preferably, described sensor cluster at least includes infrared sensor, Temperature Humidity Sensor, Smoke Sensor and MQ2
Gas sensor.
Preferably, the input of described processor is also associated with control knob.
Preferably, described wireless communication module is 4G communication module or GPRS communication module.
Preferably, described SPWM control circuit and APF wave filter composition in parallel have mixed active filter.
The technique effect of the present invention and advantage: this intelligent security guard early warning system, compared with traditional security pre-warning system, this
Invention is connected with processing unit by processor and information gathering, and information gathering is connected energy with sensor cluster again with processing unit
Indoor temperature and humidity signal, smoke signal and the carbon monoxides etc. such as the fire that enough collections cause due to voltage overload or current overload
Signal, is then passed through information gathering and passes to processor with processing unit simple process, and processor is again corresponding signal transmission
To remote monitoring terminal；The electric power fire monitor of the present invention uses modified model HHT technology for detection harmonic wave, its APF filtering in parallel
Device fast response time, it is possible to suppression series parallel resonance, it is achieved that dynamic compensation, active filter has had PPF and APF concurrently
Advantage, can effectively suppress multiple harmonic and provide reactive-load compensation, it is adaptable to high voltage distribution network；Therefore, the present invention is reasonable in design,
Range data collection transmission and aboveground remotely-controlled harmonic detecting, analysis and controlling device, it is possible to real-time online or remote
Journey gathers the state parameter information of national grid, it is possible to arbitrarily additions and deletions detection parameter, makes electric power fire monitor safety information adopt
The motility of collection is greatly enhanced, and meanwhile, the present invention is real-time, detection is flexible, detecting distance is remote and good stability, meets people
Requirement to safety utilization of electric power.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the electric power fire monitor circuit theory module map of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
The invention provides a kind of intelligent security guard early warning system as shown in Figure 1-2, including power supply, processor, memorizer
And alarm device, described power supply is electrically connected with the input of processor, and described memorizer electrically connects with the input of processor
Connecing, it is 4G communication mould that the outfan connection of described processor has LCD display and wireless communication module, described wireless communication module
Block or GPRS communication module, described wireless communication module signal is connected to remote monitoring terminal, and described processor passes through signal
Gathering to be connected with processing unit and have sensor cluster, the input of described processor is also associated with control knob, described sensor
Assembly at least includes infrared sensor, Temperature Humidity Sensor, Smoke Sensor and MQ2 gas sensor, described processor defeated
Going out end has electric power fire monitor, described electric power fire monitor to include that single-chip microcomputer and 485 drives by protocol conversion module connection
Dynamic model block, the outfan of described single-chip microcomputer and 485 drives module to be electrically connected with, and described 485 drive the outfan of module electrically to connect
Being connected to protocol conversion module, the outfan of described single-chip microcomputer is electrically connected with SPWM control circuit, described SPWM control circuit
Outfan is electrically connected with APF wave filter in parallel, described SPWM control circuit and APF wave filter composition in parallel mixed active
Filter, the input of described single-chip microcomputer is electrically connected with power balance and sampling module, three-phase current collecting unit and leakage
Electricity sampling and processing unit, the outfan of described single-chip microcomputer is also electrically connected with alarm module, described power balance and sampling mould
Block is electrically connected with three-phase current circuit, and described three-phase current collecting unit is electrically connected with current transformer, and described electric current is mutual
Sensor and three-phase current circuit are electrically connected with, and described electric leakage sampling and processing unit are electrically connected with ZCT, and described zero
Sequence transformer is electrically connected with three-phase current circuit.
Operation principle: the electric power fire monitor operation principle Main Function of the present invention is that detection module realizes load scene
Or remotely real-time harmonic parameter information gathers and monitoring, storage and the data gathered are transmitted by wireless communication module simultaneously
To remote monitoring terminal.Voltage in power system and current signal are changed respectively by voltage sensor and power pack
Becoming weak voltage signal, be converted into analog voltage signal input through circuit for signal conditioning, the A/D change-over circuit by external 16 is complete
Become voltage x current analog digital conversion, obtained the frequency of measured signal by single-chip microcomputer.Digital signal is improved the computing of type HHT,
Calculate required power quality parameter, then pass through these data of remote monitoring terminal Real Time Monitoring and transfer out, and profit
Associated harmonic is filtered with the mixed active filter of APF+SPWM inverter in parallel.
The present invention is connected with processing unit by processor and information gathering, information gathering and processing unit again with sensor
Assembly connect indoor temperature and humidity signals such as can gathering the fire that causes due to voltage overload or current overload, smoke signal and
The signals such as carbon monoxide, are then passed through information gathering and pass to processor with processing unit simple process, and processor is again accordingly
Signal send remote monitoring terminal to；The present invention according to the main triggering factors that fault electric arc is voltage of power fire, and
Explore on the basis of fault electric arc combustion characteristics, it is proposed that the detection of fault electric arc is incorporated into the monitoring of voltage of power fire with
Warning, to improve the alarm velocity of electrical fire, it is achieved the forecast function of electrical fire；Meanwhile, the present invention is according to agreement
Control principle, being provided with protocol module and electric power fire monitor can the electric leakage in collection site, electric current, voltage etc. further
Parameters of electric power and short circuit, overload, overvoltage, equal fault message under-voltage, disconnected, be converted into corresponding data by protocol conversion module
Form, and it is sent to remote monitoring terminal by processor；The data that remote monitoring terminal comes up according to reflection are read out, protect
Protecting, monitor, analyze, and send warning, the information that is set and controlled to electric power fire monitor by processor again, design is closed
Reason, it is possible to prevent and process the situation of voltage of power overload.
Finally it is noted that the foregoing is only the preferred embodiments of the present invention, it is not limited to the present invention,
Although being described in detail the present invention with reference to previous embodiment, for a person skilled in the art, it still may be used
So that the technical scheme described in foregoing embodiments to be modified, or wherein portion of techniques feature is carried out equivalent,
All within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included in the present invention's
Within protection domain.
Claims (7)
1. an intelligent security guard early warning system, including power supply, processor, memorizer and alarm device, described power supply and processor
Input be electrically connected with, it is characterised in that: the input of described memorizer and processor is electrically connected with, described processor defeated
Going out to hold connection to have LCD display and wireless communication module, described wireless communication module signal is connected to remote monitoring terminal, described
Processor is connected by Signal acquiring and processing unit sensor cluster, and the outfan of described processor passes through protocol conversion mould
Block connects electric power fire monitor.
A kind of intelligent security guard early warning system the most according to claim 1, it is characterised in that: described electric power fire monitor bag
Including single-chip microcomputer and 485 drives module, the outfan of described single-chip microcomputer and 485 to drive module to be electrically connected with, and described 485 drive module
Outfan be electrically connected at protocol conversion module, the outfan of described single-chip microcomputer is electrically connected with SPWM control circuit, described
The outfan of SPWM control circuit is electrically connected with APF wave filter in parallel, and the input of described single-chip microcomputer is electrically connected with electric power
Equilibrium and sampling module, three-phase current collecting unit and electric leakage sampling and processing unit, described power balance and sampling module with
Three-phase current circuit is electrically connected with, and described three-phase current collecting unit is electrically connected with current transformer, described current transformer
Being electrically connected with three-phase current circuit, described electric leakage sampling is electrically connected with ZCT with processing unit, and described zero sequence is mutual
Sensor is electrically connected with three-phase current circuit.
A kind of intelligent security guard early warning system the most according to claim 1, it is characterised in that: the outfan of described single-chip microcomputer is also
It is electrically connected with alarm module.
A kind of intelligent security guard early warning system the most according to claim 1, it is characterised in that: described sensor cluster at least wraps
Include infrared sensor, Temperature Humidity Sensor, Smoke Sensor and MQ2 gas sensor.
A kind of intelligent security guard early warning system the most according to claim 1, it is characterised in that: the input of described processor is also
Connect and have control knob.
A kind of intelligent security guard early warning system the most according to claim 1, it is characterised in that: described wireless communication module is 4G
Communication module or GPRS communication module.
A kind of intelligent security guard early warning system the most according to claim 1, it is characterised in that: described SPWM control circuit and also
Connection APF wave filter composition has mixed active filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610720946.4A CN106128002A (en) | 2016-08-24 | 2016-08-24 | A kind of intelligent security guard early warning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610720946.4A CN106128002A (en) | 2016-08-24 | 2016-08-24 | A kind of intelligent security guard early warning system |
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| Publication Number | Publication Date |
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| CN106128002A true CN106128002A (en) | 2016-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610720946.4A Pending CN106128002A (en) | 2016-08-24 | 2016-08-24 | A kind of intelligent security guard early warning system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106781208A (en) * | 2016-12-07 | 2017-05-31 | 上海赛复安防科技有限公司 | A kind of image-type cooking fire monitoring early-warning device |
| CN107677911A (en) * | 2017-11-06 | 2018-02-09 | 长春工程学院 | A kind of electric energy quality detection device with electric fire disaster warning function |
| CN109299667A (en) * | 2018-08-30 | 2019-02-01 | 安徽北斗易通信息技术有限公司 | A kind of electric fire-control safety check portable detector |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102855729A (en) * | 2012-08-25 | 2013-01-02 | 于宝成 | Residual current type electric fire monitoring system capable of self-supplying power |
| KR101304347B1 (en) * | 2013-03-14 | 2013-09-11 | (주)동국일렉콘스 | Monitoring and controling device in a remote place using mobile phone and method for the same |
| CN203674687U (en) * | 2014-01-23 | 2014-06-25 | 李明 | Intelligent residual-current circuit breaker |
| CN204102278U (en) * | 2014-10-20 | 2015-01-14 | 浙江合极电气科技有限公司 | With the electric arc detecting device of multifunctional monitoring |
| CN105336127A (en) * | 2015-12-05 | 2016-02-17 | 张钦 | Overload alarm system for electric power voltage detection |
| CN205080246U (en) * | 2015-11-09 | 2016-03-09 | 安徽理工大学 | Mining lifting machine converter harmonic monitoring system based on improved generation HHT |
| CN105788140A (en) * | 2016-04-19 | 2016-07-20 | 张敬敏 | Power grid monitoring system |
| CN206003260U (en) * | 2016-08-24 | 2017-03-08 | 刘毅 | A kind of intelligent security guard early warning system |
-
2016
- 2016-08-24 CN CN201610720946.4A patent/CN106128002A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102855729A (en) * | 2012-08-25 | 2013-01-02 | 于宝成 | Residual current type electric fire monitoring system capable of self-supplying power |
| KR101304347B1 (en) * | 2013-03-14 | 2013-09-11 | (주)동국일렉콘스 | Monitoring and controling device in a remote place using mobile phone and method for the same |
| CN203674687U (en) * | 2014-01-23 | 2014-06-25 | 李明 | Intelligent residual-current circuit breaker |
| CN204102278U (en) * | 2014-10-20 | 2015-01-14 | 浙江合极电气科技有限公司 | With the electric arc detecting device of multifunctional monitoring |
| CN205080246U (en) * | 2015-11-09 | 2016-03-09 | 安徽理工大学 | Mining lifting machine converter harmonic monitoring system based on improved generation HHT |
| CN105336127A (en) * | 2015-12-05 | 2016-02-17 | 张钦 | Overload alarm system for electric power voltage detection |
| CN105788140A (en) * | 2016-04-19 | 2016-07-20 | 张敬敏 | Power grid monitoring system |
| CN206003260U (en) * | 2016-08-24 | 2017-03-08 | 刘毅 | A kind of intelligent security guard early warning system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106781208A (en) * | 2016-12-07 | 2017-05-31 | 上海赛复安防科技有限公司 | A kind of image-type cooking fire monitoring early-warning device |
| CN107677911A (en) * | 2017-11-06 | 2018-02-09 | 长春工程学院 | A kind of electric energy quality detection device with electric fire disaster warning function |
| CN109299667A (en) * | 2018-08-30 | 2019-02-01 | 安徽北斗易通信息技术有限公司 | A kind of electric fire-control safety check portable detector |
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Application publication date: 20161116 |