CN103630717B - The detection system of magnetic field and interference of electromagnetic field stealing and pick-up unit thereof - Google Patents
The detection system of magnetic field and interference of electromagnetic field stealing and pick-up unit thereof Download PDFInfo
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Abstract
The invention provides detection system and the pick-up unit thereof of a kind of magnetic field and interference of electromagnetic field stealing, this device comprises: electromagnetic radiation sensor, for obtaining Electro-metering point and the current electric field intensity signal of periphery thereof; Magnetic field sensor, for obtaining Electro-metering point and the current magnetic induction density signal of periphery thereof; Locating module, for obtaining detection position, fraudulent use detection device current place; Central processing unit, for receiving described electric field intensity signal, described magnetic induction density signal and described detection position, to exceed the electric field intensity signal of electric field intensity threshold value, and/or exceed the magnetic induction density signal of magnetic induction density threshold value, the detection position corresponding with it exports as detection data; Wireless communication module, for receiving the detection data that described central processing unit sends, and is sent to host computer by it by cordless communication network.Present invention achieves the detection to high-intensity magnetic field interference stealing and strong-electromagnetic field interference stealing.
Description
Technical field
The present invention relates to fraudulent use detection device, particularly relate to detection system and the pick-up unit thereof of magnetic field and interference of electromagnetic field stealing.
Background technology
Stealing is the behavior of a kind of illegal use electric energy, the electricity charge of theft power supply enterprise.Common electricity filching means comprises: wiring electricity consumption without authorization on the power supply facilities of power supply enterprise; Around Electro-metering device (also referred to as the Electro-metering point) electricity consumption of getting over power supply enterprise; The Electro-metering device of wilful damage power supply enterprise; Deliberately make the inaccurate or inefficacy of the Electro-metering device of power supply enterprise etc.
Along with the development of technology, appear at the new electricity filching means carrying out stealing when not destroying the lead sealing of Electro-metering device at present.Special high-tech intelligentized high-power wireless technology is such as utilized ammeter to be carried out to the stealing electricity method of electromagnetic interference (EMI), it utilizes the CPU of high-power wireless signal to Electro-metering device of electricity filching device to disturb, make its cisco unity malfunction, disregard or few quantity calculation.In addition.It is saturated that strong magnet is also easy to allow the CT of Electro-metering device inside sample, if several pieces of strong magnets are cascaded, its high-intensity magnetic field produced is enough to allow ammeter internal electric source cisco unity malfunction, shows as ammeter dead electricity.Above-mentioned two kinds of stealing electricity methods can recover the metering of Electro-metering device as required at any time, and motionless any power equipment, thus when not destroying lead sealing, reach stealing object, therefore, its disguise is very strong, is difficult to be found.
At present, there is no for high-intensity magnetic field interference stealing and strong-electromagnetic field interference stealing carry out detection technique means.
Summary of the invention
The object of the present invention is to provide detection system and the pick-up unit thereof of a kind of magnetic field and interference of electromagnetic field stealing, to realize the detection to high-intensity magnetic field interference stealing and strong-electromagnetic field interference stealing.
For achieving the above object, the invention provides the pick-up unit of a kind of magnetic field and interference of electromagnetic field stealing, comprising:
Electromagnetic radiation sensor, for obtaining Electro-metering point and the current electric field intensity signal of periphery thereof;
Magnetic field sensor, for obtaining Electro-metering point and the current magnetic induction density signal of periphery thereof;
Locating module, for obtaining detection position, fraudulent use detection device current place;
Central processing unit, for receiving described electric field intensity signal, described magnetic induction density signal and described detection position, judge whether correspondence exceeds default electric field intensity threshold value and magnetic induction density threshold value for described electric field intensity signal and described magnetic induction density signal, if described electric field intensity signal exceeds described electric field intensity threshold value, and/or described magnetic induction density signal exceeds described magnetic induction density threshold value, then itself and described detection position are carried out binding and the data after binding are exported as detecting data;
Wireless communication module, for receiving the detection data that described central processing unit sends, and is sent to host computer by it by cordless communication network.
The pick-up unit of magnetic field of the present invention and interference of electromagnetic field stealing, also comprises:
First conditioning module, carries out signal condition for the electric field intensity signal obtained by described electromagnetic radiation sensor, thus is converted into the signal being suitable for described central processing unit identifying processing;
Second conditioning module, carries out signal condition for the magnetic induction density signal obtained by described magnetic field sensor, thus is converted into the signal being suitable for described central processing unit identifying processing.
The pick-up unit of magnetic field of the present invention and interference of electromagnetic field stealing, described first conditioning module and described second conditioning module include:
Filter network, carries out filtering process for the signal passed back by sensor;
Amplifying circuit, for carrying out Simulation scale-up process by the signal obtained after described filter network process;
AD converter, for carrying out analog-to-digital conversion process by the signal obtained after described amplifying circuit process.
The pick-up unit of magnetic field of the present invention and interference of electromagnetic field stealing, described amplifying circuit is two-stage amplifying circuit, its first order amplifier section is that first operational amplification circuit of AD620 and peripheral circuit thereof are formed by model, its second level amplifier section is that second operational amplification circuit of OP620 and peripheral circuit thereof are formed by model, and the output terminal of described first operational amplification circuit is connected with the inverting input of described second operational amplification circuit.
The pick-up unit of magnetic field of the present invention and interference of electromagnetic field stealing, also comprises:
Storer, for preserving the detection data that described central processing unit exports.
The pick-up unit of magnetic field of the present invention and interference of electromagnetic field stealing, described electric field intensity threshold value is 40V/m, and described magnetic induction density threshold value is 25mT.
The pick-up unit of magnetic field of the present invention and interference of electromagnetic field stealing, described Electro-metering point is 10KV circuit Electro-metering point.
The pick-up unit of magnetic field of the present invention and interference of electromagnetic field stealing, described locating module is GPS module, and described wireless communication module is GPRS module.
The pick-up unit of magnetic field of the present invention and interference of electromagnetic field stealing, this device is the pick-up unit of vehicular magnetic field and interference of electromagnetic field stealing.
On the other hand, present invention also offers the detection system of a kind of magnetic field and interference of electromagnetic field stealing, comprise the pick-up unit of any one magnetic field above-mentioned and interference of electromagnetic field stealing, and host computer, wherein, described host computer, for receiving described detection data, according to the detection position enquiring GIS for electric power in described detection data, obtain the suspicious Electro-metering point in this detection position and periphery setting range thereof.
The pick-up unit of magnetic field of the present invention and interference of electromagnetic field stealing detects Electro-metering point and the current electric field intensity signal of periphery thereof and magnetic induction density signal in real time, and Real-time Obtaining detects position simultaneously.When electric field intensity signal exceeds electric field intensity threshold value, and/or when magnetic induction density signal exceeds magnetic induction density threshold value, then itself and detection position are carried out binding and the data after binding are sent to host computer process as detecting data by cordless communication network.Thus the detection achieved high-intensity magnetic field interference stealing and strong-electromagnetic field interference stealing.The present invention is applicable to the high-intensity magnetic field interference stealing of 10KV circuit Electro-metering point and the detection of strong-electromagnetic field interference stealing very much.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms a application's part, does not form limitation of the invention.In the accompanying drawings:
Fig. 1 is the theory diagram of the magnetic field of the embodiment of the present invention and the detection system of interference of electromagnetic field stealing;
Fig. 2 is the theory diagram of the magnetic field of the embodiment of the present invention and the pick-up unit of interference of electromagnetic field stealing;
Fig. 3 is the circuit theory diagrams of amplifying circuit in the magnetic field of the embodiment of the present invention and the pick-up unit of interference of electromagnetic field stealing;
Fig. 4 is the processing flow chart of central processing unit in the pick-up unit of magnetic field and interference of electromagnetic field stealing in the embodiment of the present invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with embodiment and accompanying drawing, the present invention is described in further details.At this, schematic description and description of the present invention is for explaining the present invention, but not as a limitation of the invention.
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Refer to shown in Fig. 1, the magnetic field of the embodiment of the present invention and the detection system of interference of electromagnetic field stealing comprise pick-up unit 1 and the host computer 2 of magnetic field and interference of electromagnetic field stealing.Shown in composition graphs 2, wherein, the pick-up unit 1 of magnetic field and interference of electromagnetic field stealing comprises electromagnetic radiation sensor, magnetic field sensor, GPS module, central processing unit and GPRS module etc.Electromagnetic radiation sensor is for obtaining Electro-metering point and the current electric field intensity signal of periphery thereof; Magnetic field sensor is for obtaining Electro-metering point and the current magnetic induction density signal of periphery thereof.Locating module is for obtaining detection position, fraudulent use detection device current place.Central processing unit is used for reception electric field intensity signal, magnetic induction density signal and detects position, judge whether correspondence exceeds default electric field intensity threshold value (such as 40V/m) and magnetic induction density threshold value (25mT) for electric field intensity signal and magnetic induction density signal, if electric field intensity signal exceeds electric field intensity threshold value, and/or magnetic induction density signal exceeds magnetic induction density threshold value, then itself and detection position are carried out binding and the data after binding exported as detecting data.The concrete treatment scheme of central processing unit can with reference to shown in figure 4.Wireless communication module, for receiving the detection data that central processing unit sends, and is sent to host computer by it by cordless communication network.
Host computer 2, then for receiving detection data, according to the detection position enquiring GIS for electric power (i.e. electric power GIS) detected in data, thus obtains the suspicious Electro-metering point in this detection position and periphery setting range thereof.
As shown in Figure 2, the magnetic field of the embodiment of the present invention and the pick-up unit of interference of electromagnetic field stealing can also comprise the first conditioning module and the second conditioning module.The electric field intensity signal that first conditioning module is used for electromagnetic radiation sensor obtains carries out signal condition, thus is converted into the signal being suitable for central processing unit identifying processing.The magnetic induction density signal that second conditioning module is used for magnetic field sensor obtains carries out signal condition, thus is converted into the signal being suitable for central processing unit identifying processing.And the first conditioning module and the second conditioning module include filter network, amplifying circuit and AD converter (such as model is 8 high speed analog-to-digital conversion modules of MAX12).Wherein, the signal that filter network is used for sensor to pass back carries out filtering process; Amplifying circuit is used for the signal obtained after filter network process to carry out Simulation scale-up process; AD converter is used for the signal obtained after amplifying circuit process to carry out analog-to-digital conversion process.
Shown in composition graphs 3, the preferred two-stage amplifying circuit of above-mentioned amplifying circuit, its first order amplifier section is that first operational amplification circuit of AD620 and peripheral circuit thereof are formed by model, its second level amplifier section is that second operational amplification circuit of OP620 and peripheral circuit thereof are formed by model, and the output terminal of the first operational amplification circuit is connected with the inverting input of the second operational amplification circuit.
As shown in Figure 2, the magnetic field of the embodiment of the present invention and the pick-up unit of interference of electromagnetic field stealing also comprise storer, its detection data exported for preserving central processing unit, when needed, obtain the data in storer by data-interface.
The magnetic field of the embodiment of the present invention and the pick-up unit of interference of electromagnetic field stealing can fix a point to install, and also can be arranged to vehicle-mounted type.Because 10KV circuit Electro-metering point is normally along road arrangement, and the distance road surface, installation site of 10KV circuit Electro-metering point generally can not more than 50 meters, therefore, when the pick-up unit of vehicle-mounted type magnetic field and interference of electromagnetic field stealing is patrolled and examined along road, it can carry out stealing detection to 10KV circuit Electro-metering point in traveling process, very convenient.
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiments of the invention; the protection domain be not intended to limit the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a pick-up unit for magnetic field and interference of electromagnetic field stealing, is characterized in that, this device is the pick-up unit of vehicular magnetic field and interference of electromagnetic field stealing, and it comprises:
Electromagnetic radiation sensor, for obtaining Electro-metering point and the current electric field intensity signal of periphery thereof;
Magnetic field sensor, for obtaining Electro-metering point and the current magnetic induction density signal of periphery thereof;
Locating module, for obtaining detection position, fraudulent use detection device current place;
Central processing unit, for receiving described electric field intensity signal, described magnetic induction density signal and described detection position, the electric field intensity signal of electric field intensity threshold value will be exceeded, and/or exceeding the magnetic induction density signal of magnetic induction density threshold value, the detection position corresponding with it is carried out binding and the data after binding is exported as detection data;
Wireless communication module, for receiving the detection data that described central processing unit sends, and is sent to host computer by it by cordless communication network.
2. the pick-up unit of magnetic field according to claim 1 and interference of electromagnetic field stealing, is characterized in that, also comprises:
First conditioning module, carries out signal condition for the electric field intensity signal obtained by described electromagnetic radiation sensor, thus is converted into the signal being suitable for described central processing unit identifying processing;
Second conditioning module, carries out signal condition for the magnetic induction density signal obtained by described magnetic field sensor, thus is converted into the signal being suitable for described central processing unit identifying processing.
3. the pick-up unit of magnetic field according to claim 2 and interference of electromagnetic field stealing, is characterized in that, described first conditioning module and described second conditioning module include:
Filter network, carries out filtering process for the signal passed back by sensor;
Amplifying circuit, for carrying out Simulation scale-up process by the signal obtained after described filter network process;
AD converter, for carrying out analog-to-digital conversion process by the signal obtained after described amplifying circuit process.
4. the pick-up unit of magnetic field according to claim 3 and interference of electromagnetic field stealing, it is characterized in that, described amplifying circuit is two-stage amplifying circuit, its first order amplifier section is that first operational amplification circuit of AD620 and peripheral circuit thereof are formed by model, its second level amplifier section is that second operational amplification circuit of OP620 and peripheral circuit thereof are formed by model, and the output terminal of described first operational amplification circuit is connected with the inverting input of described second operational amplification circuit.
5. the pick-up unit of magnetic field according to claim 1 and interference of electromagnetic field stealing, is characterized in that, also comprises:
Storer, for preserving the detection data that described central processing unit exports.
6. the pick-up unit of magnetic field according to claim 1 and interference of electromagnetic field stealing, is characterized in that, described electric field intensity threshold value is 40V/m, and described magnetic induction density threshold value is 25mT.
7. the pick-up unit of magnetic field according to claim 1 and interference of electromagnetic field stealing, is characterized in that, described Electro-metering point is 10KV circuit Electro-metering point.
8. the pick-up unit of magnetic field according to claim 1 and interference of electromagnetic field stealing, is characterized in that, described locating module is GPS module, and described wireless communication module is GPRS module.
9. the detection system of a magnetic field and interference of electromagnetic field stealing, it is characterized in that, comprise the pick-up unit of magnetic field described in claim 1 to 8 any one and interference of electromagnetic field stealing, and host computer, wherein, described host computer, for receiving described detection data, according to the detection position enquiring GIS for electric power in described detection data, obtain the suspicious Electro-metering point in this detection position and periphery setting range thereof.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310594310.6A CN103630717B (en) | 2013-11-21 | 2013-11-21 | The detection system of magnetic field and interference of electromagnetic field stealing and pick-up unit thereof |
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| CN201310594310.6A CN103630717B (en) | 2013-11-21 | 2013-11-21 | The detection system of magnetic field and interference of electromagnetic field stealing and pick-up unit thereof |
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| CN103630717B true CN103630717B (en) | 2016-03-02 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104155496A (en) * | 2014-04-23 | 2014-11-19 | 国家电网公司 | Electricity larceny prevention system and method |
| CN106483371B (en) * | 2016-12-01 | 2023-03-14 | 威胜集团有限公司 | Electromagnetic attack detection device and method and electric energy meter manufactured by same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5512823A (en) * | 1993-12-15 | 1996-04-30 | Eakes Research, Inc. | Electromagnetic field detector for detecting electromagnetic field strength in an extremely low frequency band and a very low frequency band |
| CN102944759A (en) * | 2012-12-05 | 2013-02-27 | 上海市电力公司 | Non-contact early warning system for high-voltage power equipment |
| CN203164250U (en) * | 2013-04-16 | 2013-08-28 | 栖霞市供电公司 | Intelligent anti-electricity-theft protection device |
| CN203732591U (en) * | 2013-11-21 | 2014-07-23 | 国家电网公司 | Detection system and detection device for magnetic field and electromagnetic field interfering electricity stealing |
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2013
- 2013-11-21 CN CN201310594310.6A patent/CN103630717B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5512823A (en) * | 1993-12-15 | 1996-04-30 | Eakes Research, Inc. | Electromagnetic field detector for detecting electromagnetic field strength in an extremely low frequency band and a very low frequency band |
| CN102944759A (en) * | 2012-12-05 | 2013-02-27 | 上海市电力公司 | Non-contact early warning system for high-voltage power equipment |
| CN203164250U (en) * | 2013-04-16 | 2013-08-28 | 栖霞市供电公司 | Intelligent anti-electricity-theft protection device |
| CN203732591U (en) * | 2013-11-21 | 2014-07-23 | 国家电网公司 | Detection system and detection device for magnetic field and electromagnetic field interfering electricity stealing |
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