CN202886462U - Electricity stealing detection device capable of preventing external strong magnetic interference - Google Patents
Electricity stealing detection device capable of preventing external strong magnetic interference Download PDFInfo
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- CN202886462U CN202886462U CN 201220642692 CN201220642692U CN202886462U CN 202886462 U CN202886462 U CN 202886462U CN 201220642692 CN201220642692 CN 201220642692 CN 201220642692 U CN201220642692 U CN 201220642692U CN 202886462 U CN202886462 U CN 202886462U
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Abstract
The utility model relates to an electricity stealing detection device capable of preventing external strong magnetic interference. The electricity stealing detection device comprises at least one hall sensor which is arranged at a position close to an electromagnetic sensor device in a three-phase electronic electric energy meter and is used for outputting a sensed voltage signal, an analog/digital (A/D) conversion circuit for receiving the voltage signal output by the hall sensor and converting the voltage signal into a digital value, and a processor for receiving the digital value of the voltage output by the A/D conversion circuit and comparing a voltage threshold value which is pre-stored by the processor under the condition and no strong magnetic interference and is output by the hall sensor to judge whether the strong magnetic interference exists. The voltage type hall sensor is used as a detection device; the size of the voltage amplitude value output by the hall sensor and weakness of an external magnetic field form a linear relation; when an external strong magnetic field is applied to the three-phase electronic energy meter, the external strong magnetic field can be judged by comparing the voltage value with the pre-stored voltage threshold value without the external strong magnetic field and can be immediately found and processed; and normal metering and normal working of the three-phase electronic energy meter are protected.
Description
Technical field
The utility model relates to a kind of detection device for preventing from fraudulent, and specifically the pick-up unit of the strong magnetic interference stealing in a kind of anti-outside belongs to anti-electricity-theft detection technique field.
Background technology
Stealing refers to walk around electric energy meter or it was lost efficacy by certain mode, thereby reaches the purpose of escaping the payment electricity charge.At present, main stealing user progressively turns to industrial power stealing by the domestic lighting stealing, and electricity filching means also turns to hidden technicalization stealing by the stealing of obvious destruction structure.Wherein one of more common stealing mode is outside strong magnetic interference stealing mode, it mainly is near the normal metering that produces outside high-intensity magnetic field and then disturb electric energy meter by electronic electric energy meter, placing strong magnetic magnet or large coil, have and be difficult for to find, investigation difficulty, the characteristics such as power-steeling quantity is large.Outside high-intensity magnetic field can exert an influence to the most devices of three phases electronic energy meter inside, such as transformer, current transformer, key electronic device etc.Not only can affect the normal metering of three phases electronic energy meter, and may have a strong impact on the normal operation of three phases electronic energy meter, cause to reset or crash.
The utility model content
Technical problem to be solved in the utility model is the technical matters that affects the normal metering of three phases electronic energy meter and normal operation that the strong magnetic interference stealing of prior art peripheral brings, thereby the pick-up unit of the strong magnetic interference stealing in a kind of anti-outside is provided.
For solving the problems of the technologies described above, the utility model is achieved through the following technical solutions:
The pick-up unit of the strong magnetic interference stealing in a kind of anti-outside comprises:
The pick-up unit of the strong magnetic interference stealing in a kind of anti-outside comprises:
At least one Hall element arranges near the electromagnetic susceptibility device in the three phases electronic energy meter, and with the voltage signal output of sensing;
The A/D change-over circuit receives the described voltage signal of described Hall element output and converts thereof into digital output;
Processor, receive the digital quantity of the voltage of described A/D change-over circuit output, and with itself and described processor prestore without strong magnetic interference the time Hall element output voltage threshold compare, judge during greater than described voltage threshold at the voltage that detects to have strong magnetic interference and judged result is exported.
Described Hall element comprises,
Hall device, the input end of described hall device links to each other with the output terminal of power supply;
The first electric capacity, an end of described the first electric capacity links to each other with the output terminal of described power supply, the other end ground connection of described the first electric capacity;
Resistance, an end of described resistance links to each other with the output terminal of described hall device;
The second electric capacity, an end ground connection of described the second electric capacity, the other end of described the second electric capacity links to each other with the end that described resistance does not directly link to each other with described hall device.
The A/D change-over circuit that the single-chip microcomputer that described A/D change-over circuit is μ PD78F1166AGC carries; Described processor is the processor that the single-chip microcomputer of μ PD78F1166AGC carries.
The quantity of described Hall element is four, and four described Hall elements are separately positioned on described three phases electronic energy meter housing interior left plate, right plate, upper plate and the front plate.
Described hall device is the CS49E hall device.
Also comprise an alarm, described alarm links to each other with described processor, sends alerting signal when there is strong magnetic interference in described processor judgement.
Also comprise a communication unit, described communication unit links to each other with described processor, and the judged result that described processor is made sends to the power monitoring center.
Described communication unit is radio communication unit.
Technique scheme of the present utility model has the following advantages compared to existing technology:
The pick-up unit of the strong magnetic interference stealing in a kind of anti-outside described in the utility model; adopt the voltage-type Hall element as detection means; the size of the voltage magnitude of described Hall element output and external magnetic field strong and weak linear; when being applied in outside high-intensity magnetic field in the three phases electronic energy meter; the voltage of described Hall element output increases; compare the existence that to judge outside high-intensity magnetic field by the voltage threshold that prestores with without outside high-intensity magnetic field the time; can conveniently realize the detection to outside high-intensity magnetic field; in time find in time to process the normal metering of protection three phases electronic energy meter and normal operation.
Hall element described in the utility model comprises, hall device, and the input end of described hall device links to each other with the output terminal of power supply; The first electric capacity, an end of described the first electric capacity links to each other with the output terminal of described power supply, the other end ground connection of described the first electric capacity; Resistance, an end of described resistance links to each other with described hall device output terminal; The second electric capacity, one end ground connection of described the second electric capacity, the other end of described the second electric capacity links to each other with the end that described resistance does not directly link to each other with described hall device, and their tie point consists of the output terminal of described Hall element, effective filtering clutter, export cleaner voltage signal, guarantee Accuracy of Judgement.
Described A/D change-over circuit and described processor are the single-chip microcomputer of μ PD78F1166AGC, can reduce the power of whole pick-up unit, energy-conserving and environment-protective.
An alarm is set, links to each other with described processor, when there is strong magnetic interference in described processor judgement, send alerting signal, realize Real Time Monitoring.
By a communication unit is set, link to each other with described processor, the judged result that described processor is made sends to the power monitoring center, the real-time communication at realization and power monitoring center, the function of realization remote monitoring.
Description of drawings
For content of the present utility model is more likely to be clearly understood, below in conjunction with accompanying drawing, the utility model is described in further detail, wherein,
Fig. 1 is the structural representation of pick-up unit of the strong magnetic interference stealing in anti-outside of an embodiment of the utility model;
Fig. 2 is the electrical block diagram of the Hall element of an embodiment of the utility model.
Embodiment
Referring to shown in Figure 1, pick-up unit as the strong magnetic interference stealing in anti-outside of an embodiment of the utility model, comprise four Hall elements, during use, a described Hall element is arranged on the interior front plate of three phases electronic energy meter housing, second described Hall element is arranged on the left plate in the described three phases electronic energy meter housing, the 3rd described Hall element arranges the right plate in the described three phases electronic energy meter housing, the 4th described Hall element is arranged on the interior upper plate of described three phases electronic energy meter housing, guarantee that magnetic field on four faces all perpendicular to the sensitive surface of one of them described Hall element, guarantees precision and the susceptibility of induction; Four described Hall elements all arrange near the electromagnetic susceptibility device in the three phases electronic energy meter, four described Hall elements and four voltage signals will sensing are exported by a radio communication unit, the judged result that described processor is made sends to the power monitoring center, the real-time communication at realization and power monitoring center, the function of realization remote monitoring;
The single-chip microcomputer of μ PD78F1166AGC comprises multi-channel A/D change-over circuit, and four tunnel described A/D change-over circuits wherein are used for receiving four described voltage signals of four described Hall element outputs and converting thereof into digital output; Simultaneously, the processor that the single-chip microcomputer of μ PD78F1166AGC carries receives the digital quantity of the voltage of described A/D change-over circuit output, and with its with prestore without strong magnetic interference the time four described Hall element outputs voltage threshold compare, judge during greater than described voltage threshold at the voltage that detects to have strong magnetic interference and judged result is exported.
As the Hall element of a specific embodiment of the utility model, referring to shown in Figure 2, described Hall element comprises,
Hall device, the input end of described hall device links to each other with the output terminal of power supply, and as a specific embodiment of the present utility model, described hall device is the CS49E hall device;
The first capacitor C 1, an end of described the first capacitor C 1 links to each other with the output terminal of described power supply, and the other end ground connection of described the first capacitor C 1 is used for filtering;
The second capacitor C 2, an end ground connection of described the second capacitor C 2, the other end of described the second capacitor C 2 links to each other with the end that described resistance R 1 does not directly link to each other with described hall device, and their tie point consists of the output terminal of described Hall element.Described resistance R 1 and described the second capacitor C 2 form filtering circuit, and the clutter in the voltage signal of the described hall device induction of filtering guarantees the voltage signal that output is clean.
The size of the voltage magnitude of described Hall element output and external magnetic field strong and weak linear; when being applied in outside high-intensity magnetic field in the three phases electronic energy meter; the voltage of described Hall element output increases; compare the existence that to judge outside high-intensity magnetic field by the voltage threshold that prestores with without outside high-intensity magnetic field the time; can conveniently realize the detection to outside high-intensity magnetic field; in time find in time to process the normal metering of protection three phases electronic energy meter and normal operation.
The A/D change-over circuit that the single-chip microcomputer that described A/D change-over circuit among the embodiment of the present utility model is μ PD78F1166AGC carries; Described processor is the processor that the single-chip microcomputer of μ PD78F1166AGC carries, and can reduce the power of whole pick-up unit, energy-conserving and environment-protective.
An embodiment of the present utility model can increase an alarm, links to each other with described processor, sends alerting signal when there is strong magnetic interference in described processor judgement, realizes Real Time Monitoring.
Described single-chip microcomputer in above-described embodiment can and not have A/D change-over circuit single-chip microcomputer to replace as processor for independent A/D change-over circuit of the prior art, can realize the purpose of this utility model equally.
As the distortion of above-described embodiment, the pick-up unit of the strong magnetic interference stealing in anti-outside of the present utility model also comprises an alarm, links to each other with described processor, sends alerting signal when there is strong magnetic interference in described processor judgement.Other and above-described embodiment can be realized the purpose of this utility model equally.
As the distortion of above-described embodiment, the pick-up unit of the strong magnetic interference stealing in anti-outside of the present utility model also comprises: a communication unit, link to each other with described processor, and the judged result that described processor is made sends to the power monitoring center.Other and above-described embodiment can be realized the purpose of this utility model equally.
Described communication unit is radio communication unit or wire communication unit.
Obviously, above-described embodiment only is for example clearly is described, and is not the restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all embodiments exhaustive.And the apparent variation of being extended out thus or change still are among the protection domain of the present utility model.
Claims (8)
1. the pick-up unit of an anti-outside strong magnetic interference stealing is characterized in that, comprising:
At least one Hall element arranges near the electromagnetic susceptibility device in the three phases electronic energy meter, and with the voltage signal output of sensing;
The A/D change-over circuit receives the described voltage signal of described Hall element output and converts thereof into digital output;
Processor, receive the digital quantity of the voltage of described A/D change-over circuit output, and with itself and described processor prestore without strong magnetic interference the time Hall element output voltage threshold compare, judge during greater than described voltage threshold at the voltage that detects to have strong magnetic interference and judged result is exported.
2. the pick-up unit of the strong magnetic interference stealing in anti-outside according to claim 1 is characterized in that:
Described Hall element comprises,
Hall device, the input end of described hall device links to each other with the output terminal of power supply;
The first electric capacity, an end of described the first electric capacity links to each other with the output terminal of described power supply, the other end ground connection of described the first electric capacity;
Resistance, an end of described resistance links to each other with the output terminal of described hall device;
The second electric capacity, an end ground connection of described the second electric capacity, the other end of described the second electric capacity links to each other with the end that described resistance does not directly link to each other with described hall device.
3. the pick-up unit of the strong magnetic interference stealing in anti-outside according to claim 1 and 2 is characterized in that: the A/D change-over circuit that the single-chip microcomputer that described A/D change-over circuit is μ PD78F1166AGC carries; Described processor is the processor that the single-chip microcomputer of μ PD78F1166AGC carries.
4. the pick-up unit of the strong magnetic interference stealing in anti-outside according to claim 1 and 2, it is characterized in that: the quantity of described Hall element is four, and four described Hall elements are separately positioned on described three phases electronic energy meter housing interior left plate, right plate, upper plate and the front plate.
5. the pick-up unit of the strong magnetic interference stealing in anti-outside according to claim 2, it is characterized in that: described hall device is the CS49E hall device.
6. the pick-up unit of the strong magnetic interference stealing in anti-outside according to claim 3 is characterized in that, also comprises an alarm, and described alarm links to each other with described processor, sends alerting signal when there is strong magnetic interference in described processor judgement.
7. the pick-up unit of the strong magnetic interference stealing in anti-outside according to claim 6 is characterized in that, also comprises a communication unit, and described communication unit links to each other with described processor, and the judged result that described processor is made sends to the power monitoring center.
8. the pick-up unit of the strong magnetic interference stealing in anti-outside according to claim 7, it is characterized in that: described communication unit is radio communication unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220642692 CN202886462U (en) | 2012-11-29 | 2012-11-29 | Electricity stealing detection device capable of preventing external strong magnetic interference |
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| CN 201220642692 CN202886462U (en) | 2012-11-29 | 2012-11-29 | Electricity stealing detection device capable of preventing external strong magnetic interference |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103592484A (en) * | 2013-11-04 | 2014-02-19 | 江苏林洋电子股份有限公司 | Electricity larceny prevention method for preventing strong magnet from generating error influences on electronic-type energy meter |
| CN103954815A (en) * | 2014-04-30 | 2014-07-30 | 国网上海市电力公司 | Electricity larceny prevention check main machine |
| CN103954816A (en) * | 2014-04-30 | 2014-07-30 | 国网上海市电力公司 | Inelegant remote anti-electricity-stealing inspection method |
| CN104880681A (en) * | 2015-05-14 | 2015-09-02 | 国家电网公司 | Strong-magnetic-field electricity-steal autoalarm and control method thereof |
| CN106291092A (en) * | 2016-07-29 | 2017-01-04 | 国家电网公司 | The anti-outside Constant charge soil interference method of a kind of intelligent electric meter |
| CN109061260A (en) * | 2018-06-19 | 2018-12-21 | 广东电网有限责任公司潮州供电局 | A method of preventing strong magnetic stealing |
| CN109116073A (en) * | 2018-08-28 | 2019-01-01 | 云南电网有限责任公司电力科学研究院 | One kind is opposed electricity-stealing monitoring method, apparatus and system |
| CN109961987A (en) * | 2017-12-14 | 2019-07-02 | 国网湖南省电力有限公司 | Antimagnetic interference method, device and the intelligent micro-circuit breaker of intelligent micro-circuit breaker |
| CN110068716A (en) * | 2019-05-16 | 2019-07-30 | 宁波三星医疗电气股份有限公司 | Stealing detection method and device |
| CN112945218A (en) * | 2021-01-26 | 2021-06-11 | 北京小米移动软件有限公司 | Method and device for determining direction of electronic equipment, electronic equipment and storage medium |
| CN115656697A (en) * | 2022-11-17 | 2023-01-31 | 深圳市海曼科技股份有限公司 | Strong magnetic interference detection method for door magnet and door magnet device |
-
2012
- 2012-11-29 CN CN 201220642692 patent/CN202886462U/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103592484B (en) * | 2013-11-04 | 2016-04-20 | 江苏林洋能源股份有限公司 | A kind of electricity anti-theft method for anti-strong magnet, electronic electric energy meter being produced to error effect |
| CN103592484A (en) * | 2013-11-04 | 2014-02-19 | 江苏林洋电子股份有限公司 | Electricity larceny prevention method for preventing strong magnet from generating error influences on electronic-type energy meter |
| CN103954815A (en) * | 2014-04-30 | 2014-07-30 | 国网上海市电力公司 | Electricity larceny prevention check main machine |
| CN103954816A (en) * | 2014-04-30 | 2014-07-30 | 国网上海市电力公司 | Inelegant remote anti-electricity-stealing inspection method |
| CN104880681A (en) * | 2015-05-14 | 2015-09-02 | 国家电网公司 | Strong-magnetic-field electricity-steal autoalarm and control method thereof |
| CN106291092B (en) * | 2016-07-29 | 2019-06-25 | 国家电网公司 | Constant charge soil interference monitoring and electricity method is remedied outside a kind of intelligent electric meter |
| CN106291092A (en) * | 2016-07-29 | 2017-01-04 | 国家电网公司 | The anti-outside Constant charge soil interference method of a kind of intelligent electric meter |
| CN109961987A (en) * | 2017-12-14 | 2019-07-02 | 国网湖南省电力有限公司 | Antimagnetic interference method, device and the intelligent micro-circuit breaker of intelligent micro-circuit breaker |
| CN109061260A (en) * | 2018-06-19 | 2018-12-21 | 广东电网有限责任公司潮州供电局 | A method of preventing strong magnetic stealing |
| CN109116073A (en) * | 2018-08-28 | 2019-01-01 | 云南电网有限责任公司电力科学研究院 | One kind is opposed electricity-stealing monitoring method, apparatus and system |
| CN110068716A (en) * | 2019-05-16 | 2019-07-30 | 宁波三星医疗电气股份有限公司 | Stealing detection method and device |
| CN112945218A (en) * | 2021-01-26 | 2021-06-11 | 北京小米移动软件有限公司 | Method and device for determining direction of electronic equipment, electronic equipment and storage medium |
| CN115656697A (en) * | 2022-11-17 | 2023-01-31 | 深圳市海曼科技股份有限公司 | Strong magnetic interference detection method for door magnet and door magnet device |
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Granted publication date: 20130417 |
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