CN103630717A - Detection system and detection device for magnetic field and electromagnetic field interference and electricity larceny - Google Patents
Detection system and detection device for magnetic field and electromagnetic field interference and electricity larceny Download PDFInfo
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- CN103630717A CN103630717A CN201310594310.6A CN201310594310A CN103630717A CN 103630717 A CN103630717 A CN 103630717A CN 201310594310 A CN201310594310 A CN 201310594310A CN 103630717 A CN103630717 A CN 103630717A
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Abstract
The invention provides a detection system and a detection device for magnetic field and electromagnetic field interference and electricity larceny. The device comprises an electromagnetic radiation sensor, a magnetic field sensor, a positioning module, a central processing unit and a wireless communication module, wherein the electromagnetic radiation sensor is used for acquiring electricity utilization metering points and the current electric field intensity signal in the periphery of the electricity utilization metering points, the magnetic field sensor is used for acquiring electricity utilization metering points and the current magnetic induction intensity signal in the periphery of the electricity utilization metering points, the positioning module is used for acquiring the detection position where an electricity larceny detection device is currently positioned, the central processing unit is used for receiving the electric field intensity signal, the magnetic induction intensity signal and the detection position, and outputting the electric field intensity signal going beyond the electric field intensity threshold, and/or the magnetic induction intensity signal going beyond the magnetic induction intensity threshold and the corresponding detection positions as detection data, and the wireless communication module is used for receiving the detection data sent by the central processing unit, and sending the detection data to an upper computer through a wireless communication network. Detection for strong magnetic field interference and electricity larceny and strong electromagnetic field interference and electricity larceny is realized.
Description
Technical field
The present invention relates to fraudulent use detection device, relate in particular 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; The Electro-metering device of Rao Yue power supply enterprise (also referred to as Electro-metering point) electricity consumption; 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, appeared at the new electricity filching means that carries out stealing in the situation of not destroying the lead sealing of Electro-metering device at present.For example utilize the intelligentized high-power wireless technology of special-purpose high-tech ammeter to be carried out to the stealing electricity method of electromagnetic interference (EMI), it utilizes the high-power wireless signal of electricity filching device to disturb the CPU of Electro-metering device, make its cisco unity malfunction, disregard or few quantity calculation.In addition.Strong magnet is also easy to allow the CT sampling of Electro-metering device inside saturated, if several strong magnets are cascaded, the high-intensity magnetic field of its generation 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, thereby in the situation that not destroying lead sealing, reach stealing object, and therefore, its disguise is very strong, is difficult to be found.
At present, there is no for high-intensity magnetic field and disturb stealing and strong-electromagnetic field to disturb stealing to 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, to high-intensity magnetic field, disturb stealing and strong-electromagnetic field to disturb the detection of 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 the current electric field intensity signal of Electro-metering point and periphery thereof;
Magnetic field sensor, for obtaining the current magnetic induction density signal of Electro-metering point and periphery thereof;
Locating module, for obtaining detection position, the current place of fraudulent use detection device;
Central processing unit, be used for receiving described electric field intensity signal, described magnetic induction density signal and described detection position, judge whether corresponding default electric field intensity threshold value and the magnetic induction density threshold value of exceeding of 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, by it and bind described detection position and using the data after binding as detecting data output;
Wireless communication module, the detection data that send for receiving described central processing unit, and it is sent to host computer by cordless communication network.
The pick-up unit of magnetic field of the present invention and interference of electromagnetic field stealing, also comprises:
The first conditioning module, carries out signal condition for the electric field intensity signal that described electromagnetic radiation sensor is obtained, thereby is converted into the signal that is suitable for described central processing unit identifying processing;
The second conditioning module, carries out signal condition for the magnetic induction density signal that described magnetic field sensor is obtained, thereby is converted into the signal that is 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 the first conditioning module and described the second conditioning module include:
Filter network, carries out filtering processing for the signal that sensor is passed back;
Amplifying circuit, simulates to amplify for the signal obtaining after described filter network is processed and processes;
AD converter, carries out analog-to-digital conversion process for the signal obtaining after described amplifying circuit is processed.
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, the first operational amplification circuit and peripheral circuit thereof that its first order amplifier section is AD620 by model form, the second operational amplification circuit and peripheral circuit thereof that its second level amplifier section is OP620 by model form, and the output terminal of described the first operational amplification circuit is connected with the inverting input of described the 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 of described central processing unit output.
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, 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, described wireless communication module is GPRS module.
The pick-up unit of magnetic field of the present invention and interference of electromagnetic field stealing, the pick-up unit that this device is vehicular magnetic field and interference of electromagnetic field stealing.
On the other hand, the present invention also provides the detection system of a kind of magnetic field and interference of electromagnetic field stealing, the pick-up unit that comprises above-mentioned any one magnetic field and interference of electromagnetic field stealing, and host computer, wherein, described host computer, for receiving described detection data, according to the detection position inquiry electric power Geographic Information System 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 current electric field intensity signal and the magnetic induction density signal of periphery thereof in real time, simultaneously Real-time Obtaining detection position.When electric field intensity signal exceeds electric field intensity threshold value, and/or magnetic induction density signal is while exceeding magnetic induction density threshold value, by it and bind detection position and the data after binding are sent to host computer by cordless communication network and process as detecting data.Thereby realized, to high-intensity magnetic field, disturb stealing and strong-electromagnetic field to disturb the detection of stealing.The high-intensity magnetic field that the present invention is applicable to 10KV circuit Electro-metering point very much disturbs stealing and strong-electromagnetic field to disturb the detection of stealing.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a 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 clearer, 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 used 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 detection system of the magnetic field of the embodiment of the present invention and interference of electromagnetic field stealing comprises pick-up unit 1 and the host computer 2 of magnetic field and interference of electromagnetic field stealing.Shown in Fig. 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 used for obtaining detection position, the current place of fraudulent use detection device.Central processing unit is for reception electric field intensity signal, magnetic induction density signal and detection position, judge whether corresponding default electric field intensity threshold value (for example 40V/m) and the magnetic induction density threshold value (25mT) of exceeding of 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, by it and bind detection position and using the data after binding as detecting data output.The concrete treatment scheme of central processing unit can be with reference to shown in figure 4.Wireless communication module, the detection data that send for receiving central processing unit, and it is sent to host computer by cordless communication network.
Host computer 2, for receiving detection data, according to the detection position inquiry electric power Geographic Information System (being electric power GIS) detecting in data, thereby obtains the suspicious Electro-metering point in this detection position and periphery setting range thereof.
As shown in Figure 2, the pick-up unit of the magnetic field of the embodiment of the present invention and interference of electromagnetic field stealing can also comprise the first conditioning module and the second conditioning module.The first conditioning module is carried out signal condition for the electric field intensity signal that electromagnetic radiation sensor is obtained, thereby is converted into the signal that is suitable for central processing unit identifying processing.The second conditioning module is carried out signal condition for the magnetic induction density signal that magnetic field sensor is obtained, thereby is converted into the signal that is suitable for central processing unit identifying processing.For example, and the first conditioning module and the second conditioning module include filter network, amplifying circuit and AD converter (8 high speed analog-to-digital conversion modules that model is MAX12).Wherein, filter network carries out filtering processing for the signal that sensor is passed back; Amplifying circuit is simulated to amplify for the signal obtaining after filter network is processed and is processed; AD converter is carried out analog-to-digital conversion process for the signal obtaining after amplifying circuit is processed.
Shown in Fig. 3, the preferred two-stage amplifying circuit of above-mentioned amplifying circuit, the first operational amplification circuit and peripheral circuit thereof that its first order amplifier section is AD620 by model form, the second operational amplification circuit and peripheral circuit thereof that its second level amplifier section is OP620 by model form, 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 pick-up unit of the magnetic field of the embodiment of the present invention and interference of electromagnetic field stealing also comprises storer, and it,, for preserving the detection data of central processing unit output, when needed, can obtain the data in storer by data-interface.
The pick-up unit of the magnetic field of the embodiment of the present invention and 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 installation site of 10KV circuit Electro-metering point generally can be over 50 meters apart from road surface, 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; institute is understood that; the foregoing is only specific embodiments of the invention; the protection domain being not intended to limit the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a pick-up unit for magnetic field and interference of electromagnetic field stealing, is characterized in that, comprising:
Electromagnetic radiation sensor, for obtaining the current electric field intensity signal of Electro-metering point and periphery thereof;
Magnetic field sensor, for obtaining the current magnetic induction density signal of Electro-metering point and periphery thereof;
Locating module, for obtaining detection position, the current place of fraudulent use detection device;
Central processing unit, be used 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 is as detecting data output;
Wireless communication module, the detection data that send for receiving described central processing unit, and it is sent to host computer 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:
The first conditioning module, carries out signal condition for the electric field intensity signal that described electromagnetic radiation sensor is obtained, thereby is converted into the signal that is suitable for described central processing unit identifying processing;
The second conditioning module, carries out signal condition for the magnetic induction density signal that described magnetic field sensor is obtained, thereby is converted into the signal that is 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 the first conditioning module and described the second conditioning module include:
Filter network, carries out filtering processing for the signal that sensor is passed back;
Amplifying circuit, simulates to amplify for the signal obtaining after described filter network is processed and processes;
AD converter, carries out analog-to-digital conversion process for the signal obtaining after described amplifying circuit is processed.
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, the first operational amplification circuit and peripheral circuit thereof that its first order amplifier section is AD620 by model form, the second operational amplification circuit and peripheral circuit thereof that its second level amplifier section is OP620 by model form, and the output terminal of described the first operational amplification circuit is connected with the inverting input of described the 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 of described central processing unit output.
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 pick-up unit of magnetic field according to claim 1 and interference of electromagnetic field stealing, is characterized in that, the pick-up unit that this device is vehicular magnetic field and interference of electromagnetic field stealing.
10. the detection system of a magnetic field and interference of electromagnetic field stealing, it is characterized in that, comprise magnetic field described in claim 1 to 9 any one and the pick-up unit of interference of electromagnetic field stealing, and host computer, wherein, described host computer, for receiving described detection data, according to the detection position inquiry electric power Geographic Information System 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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| CN103630717A true CN103630717A (en) | 2014-03-12 |
| CN103630717B CN103630717B (en) | 2016-03-02 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104155496A (en) * | 2014-04-23 | 2014-11-19 | 国家电网公司 | Electricity larceny prevention system and method |
| CN106483371A (en) * | 2016-12-01 | 2017-03-08 | 威胜集团有限公司 | EMP attack N detection means, detection method and its electric energy meter that makes |
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| 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 |
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| 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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104155496A (en) * | 2014-04-23 | 2014-11-19 | 国家电网公司 | Electricity larceny prevention system and method |
| CN106483371A (en) * | 2016-12-01 | 2017-03-08 | 威胜集团有限公司 | EMP attack N detection means, detection method and its electric energy meter that makes |
| 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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| CN103630717B (en) | 2016-03-02 |
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