CN104269015B - Device for detecting whether power measurement device is attacked or not - Google Patents
Device for detecting whether power measurement device is attacked or not Download PDFInfo
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- CN104269015B CN104269015B CN201410473517.2A CN201410473517A CN104269015B CN 104269015 B CN104269015 B CN 104269015B CN 201410473517 A CN201410473517 A CN 201410473517A CN 104269015 B CN104269015 B CN 104269015B
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- 238000005259 measurement Methods 0.000 title abstract 4
- 238000001514 detection method Methods 0.000 claims abstract description 76
- 238000004891 communication Methods 0.000 claims abstract description 33
- 238000006073 displacement reaction Methods 0.000 claims abstract description 16
- 239000003990 capacitor Substances 0.000 claims description 27
- 230000001133 acceleration Effects 0.000 claims description 6
- 238000007689 inspection Methods 0.000 claims 1
- 238000012423 maintenance Methods 0.000 claims 1
- 238000000465 moulding Methods 0.000 claims 1
- XOFYZVNMUHMLCC-ZPOLXVRWSA-N prednisone Chemical compound O=C1C=C[C@]2(C)[C@H]3C(=O)C[C@](C)([C@@](CC4)(O)C(=O)CO)[C@@H]4[C@@H]3CCC2=C1 XOFYZVNMUHMLCC-ZPOLXVRWSA-N 0.000 claims 1
- 230000006378 damage Effects 0.000 abstract description 8
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 230000007547 defect Effects 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 238000013475 authorization Methods 0.000 description 3
- 230000006399 behavior Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005389 magnetism Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/22—Electrical actuation
- G08B13/24—Electrical actuation by interference with electromagnetic field distribution
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/02—Constructional details
- G01R11/24—Arrangements for avoiding or indicating fraudulent use
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/02—Mechanical actuation
Abstract
The invention discloses a device for detecting whether a power measurement device is attacked or not. The device for detecting whether the power measurement device is attacked or not comprises a master control unit and a detection unit, wherein the master control unit comprises a master control module, and the detection unit comprises a detection control module, a 35kV high-voltage discharge detection module, a vibration and physical displacement detection module and a strong magnetic detection module. The master control module, the 35kV high-voltage discharge detection module, the vibration and physical displacement detection module and the strong magnetic detection module are electrically connected with the detection control module. The device for detecting whether the power measurement device is attacked or not can be widely applied to monitoring of communication device, power devices and other devices, is good in anti-jamming capability and low in power consumption and can effectively avoid economic loss caused by man-made destruction.
Description
Technical field
The present invention relates to a kind of testing circuit, refer in particular to a kind of detection of being attacked for Application of Power Metering Instruments and fillPut.
Background technology
Along with the development of electric power, mechanics of communication, the means of various destruction communications services and electric-power metering facility are also constantly gushedExisting, the most representative have the attack of 35kV electrion, constant intensive magnetism attack, a physical damage to metering facility etc. SufferThe equipment of attacking tends to the due function of forfeiture equipment, brings larger economic loss and negative effect to society.
Current a lot of communications and electric power facility, do not have attack detecting reporting functions aspect performance and functional requirement,Thereby destroy and opened convenience to lawless person. In addition, not also being specifically designed to now Application of Power Metering Instruments suffersThe checkout gear of attacking, to this conventional method is: install instrument box additional and stop layman and contact with the direct of measuring equipment;Metering device increases anti-stealing electricity function; Staff regularly patrols and examines measuring equipment. But all there is defect in these measures, asThink that his-and-hers watches case splits badly, metering device is attacked and was lost efficacy, staff to patrol and examine real-time poor.
Summary of the invention
Lack the problem of attack detecting device in order to solve existing communication and electric power facility, the present invention proposes a kind of forThe checkout gear that Application of Power Metering Instruments is attacked, can be widely used in the monitoring of the equipment such as communication, electric power, antijamming capabilityBy force, low in energy consumption, can effectively avoid the economic loss causing because of artificial destruction.
The technical solution adopted in the present invention is: a kind of checkout gear of being attacked for Application of Power Metering Instruments, comprisesMain control unit and detecting unit, described main control unit comprises main control module, described detecting unit comprises detection control moduleWith strong magnetic detection module, described main control module, strong magnetic detection module are electrically connected with detection control module respectively. The present invention overcomesThe defect of current device management, increased strong magnetic detection module and carried out anti-electricity-theft detection, can effectively detect intensive magnetism attackElectricity filching behavior. Thereby effectively avoid the economic loss causing because of artificial destruction.
As preferably, described strong magnetic detection module is the strong magnetic detection module circuit based on Hall element.
As preferably, described detecting unit also comprises 35kV electrion detection module, described 35kV electrionDetection module is electrically connected with detecting control module, and 35kV electrion detection module comprises the reception frequency-selecting electricity of electrical connection successivelyRoad, High Amplifier Circuit, final stage rectification circuit and signal keep output circuit. The present invention has overcome the defect of current device management, increasesAdd 35kV electrion detection module and carried out anti-electricity-theft detection, can effectively detect the stealing row that 35kV electrion is attackedFor.
As preferably, described detecting unit is involving vibrations and physical displacement detection module also, described vibration and physicsDisplacement detection module is electrically connected with detecting control module, and vibration and physical displacement detection module are based on three dimension acceleration sensorModular circuit. The present invention has overcome the defect of current device management, has increased vibration and physical displacement detection module preventsStealing detects, and can effectively detect physical vibration and destroy the electricity filching behavior of attacking.
As preferably, described main control unit also comprises Far-infrared communication module, described Far-infrared communication module and masterThe electrical connection of control module. Main control module has coordinated authorization control and the patrol officer's management of showing case with Far-infrared communication module.
As preferably, described main control unit also comprises RS485 communication module, described RS485 communication module and master controlModule electrical connection. RS485 communication module can be realized and the communications such as GPRS module or concentrator, and carries out with remote control centerContact.
As preferably, described main control unit also comprises indicating lamp module, described indicator lamp communication module and master control mouldPiece electrical connection. Indicating lamp module is several LED lights, and main control module comes by different colours and the illuminating state of indicator lampIndicate the working condition of whole device.
As preferably, described main control unit also comprises that door lock drives detection module, and described door lock drives detection moduleBe electrically connected with main control module.
The invention has the beneficial effects as follows: can be widely used in the monitoring of the equipment such as communication, electric power, antijamming capability is strong,Low in energy consumption, can effectively avoid the economic loss causing because of artificial destruction.
Brief description of the drawings
Fig. 1 is a kind of structured flowchart of the present invention;
Fig. 2 is the circuit diagram of strong magnetic detection module in the present invention;
Fig. 3 is the circuit diagram of 35kV electrion detection module in the present invention;
Fig. 4 is vibration and the circuit diagram of physical displacement detection module in the present invention.
In figure, 1-main control unit, 2-detecting unit, 11-main control module, 12-Far-infrared communication module, 13-RS485 communicationModule, 14-indicating lamp module, 15-door lock drives detection module, and 21-detects control module, the strong magnetic detection module of 22-, 23-35kV electrion detection module, 24-vibration and physical displacement detection module.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail.
As shown in Figure 1, a kind of checkout gear of being attacked for Application of Power Metering Instruments, comprises main control unit 1 and detectsUnit 2, can be installed on the equipment such as electric power, communication: main control unit 1 comprise main control module 11, Far-infrared communication module 12,RS485 communication module 13, indicating lamp module 14 and door lock drive detection module 15, Far-infrared communication module 12, RS485 communication mouldPiece 13, indicating lamp module 14 and door lock drive detection module 15 to be electrically connected with main control module 11 respectively; Detecting unit 2 comprises detectionControl module 21, strong magnetic detection module 22,35kV electrion detection module 23 and vibration and physical displacement detection module 24 are strongMagnetic detection module 22,35kV electrion detection module 23 and vibration and physical displacement detection module 24 are controlled mould with detection respectivelyPiece 21 is electrically connected; Main control module 11 is electrically connected with detection control module 21.
The chip that main control module 11 adopts is ST high-performance, low-power consumption MCU, and main control module 11 is controlled its of main control unit 1The detection control unit 21 of the normal work of his module and detecting unit 2, main control module built in hardware clock chip RX-8025TUC,Markers is accurately provided.
Far-infrared communication module 12 is communication and the testing circuit based on infrared sensor. Main control module 11 is logical with far infraredNews module 12 has coordinated authorization control and the patrol officer's management of showing case.
RS485 communication module 13 is RS485 communicating circuit, can realize and the communications such as GPRS module or concentrator, and withRemote control center contacts.
Indicating lamp module 14 is several LED lights, and main control module 11 is not by indicator lamp in indicating lamp module 14Indicate the working condition of whole device with color and illuminating state.
Door lock drives detection module 15 to contain chamber door open circuit and door lock state sensing circuit. Main control module 11 by andDoor lock drives detection module 15 to coordinate, and completes the opening and closing operation of chamber door electronic lock.
The chip that detection control unit 21 adopts is ST high-performance, low-power consumption MCU, as STM8L051F3, detects and controls listUnit 21 receives the detection of strong magnetic detection module 22,35kV electrion detection module 23 and vibration and physical displacement detection module 24Signal also sends main control unit 1 to.
As shown in Figure 2, strong magnetic detection module 22 is the strong magnetic detection module circuit based on Hall element, the Hall unit of employingPart U1 is PT3661. U1 has pin 1, pin 2 and tri-pins of GND: pin 1 connects power supply, and pin 1 is by resistance C8 ground connection; DrawPin 2 connects power supply by resistance R 16, and pin 2 is by capacitor C 9 ground connection, and pin 2 is Hall and detects output. Around table caseHave strong magnetic disturbance and when Hall element senses that magnetic field intensity is greater than 35 Gausses' (Guass) magnetic field will output low level, shouldSignal is sent to main control module 11 by detecting control module 21.
As shown in Figure 3,35kV electrion detection module 23 comprises the reception frequency selection circuit of electrical connection successively, high electric dischargeRoad, final stage rectification circuit and signal keep output circuit, and the output detection signal of 35kV electrion detection module 23 is by inspectionSurvey control module 21 and be sent to main control module 11.
Receive frequency selection circuit and comprise reception antenna E1 and filter circuit, the input of reception antenna E1 and filter circuit is electrically connectedConnect. Filter circuit comprises the series connection bandwidth-limited circuit that is composed in series by capacitor C 1, inductance L 1 and by capacitor C 2, inductance L 2 parallel connectionsThe bandwidth-limited circuit in parallel of composition, one end of capacitor C 1 connects reception antenna E1, one of the other end of capacitor C 1 and inductance L 1End series connection, capacitor C 2 is in parallel with inductance L 2, and one end of capacitor C 2 is connected with the other end of inductance L 1, another termination of capacitor C 2Ground, the antijamming capability of raising testing circuit, avoids the interference of wireless and mobile device. Capacitor C 2 with the tie point of inductance L 1 isThe output of filter circuit.
High Amplifier Circuit comprise NPN type triode Q1, NPN type triode Q2, positive-negative-positive triode Q5, positive-negative-positive triode Q6,Resistance R 2, resistance R 3, resistance R 5, resistance R 6, resistance R 8, resistance R 9, resistance R 12, capacitor C 3 and capacitor C 4, final stage rectification circuitComprise NPN type triode Q3, positive-negative-positive triode Q4, positive-negative-positive triode Q7, diode D1, resistance R 4, resistance R 10 and resistanceR13, one end of capacitor C 3, one end of capacitor C 4 all connect the output of filter circuit, the other end contact resistance R5 of capacitor C 3One end, the other end of resistance R 5 is one end, one end of resistance R 6 and the base stage of NPN type triode Q1 of contact resistance R3 respectively,The emitter stage of NPN type triode Q1 connects the base stage of NPN type triode Q2, the colelctor electrode of NPN type triode Q1, NPN type three utmost pointsThe colelctor electrode of pipe Q2 one end of contact resistance R2 respectively, one end of the other end contact resistance R9 of capacitor C 4, another of resistance R 9One end of end difference contact resistance R12, one end of resistance R 8, the base stage of positive-negative-positive triode Q6, the transmitting of positive-negative-positive triode Q6The utmost point is connected with the base stage of positive-negative-positive triode Q5, and the colelctor electrode of positive-negative-positive triode Q5, the colelctor electrode of positive-negative-positive triode Q6 connect respectivelyOne end of connecting resistance R11, the colelctor electrode of positive-negative-positive triode Q4 is connected with the colelctor electrode of positive-negative-positive triode Q7, NPN type triodeBetween the emitter stage of the base stage of Q2 and NPN type triode Q2, be connected with resistance R 14, the base stage of positive-negative-positive triode Q5 and positive-negative-positive threeBetween the emitter stage of utmost point pipe Q5, be connected with resistance R 15, the two ends of resistance R 4 connect respectively base stage, the NPN type of positive-negative-positive triode Q4The colelctor electrode of triode Q1, the two ends of resistance R 10 connect respectively the colelctor electrode of positive-negative-positive triode Q6, the base of NPN type triode Q3The utmost point, the two ends of resistance R 13 connect respectively the base stage of positive-negative-positive triode Q7, the colelctor electrode of NPN type triode Q3, NPN type triodeThe transmitting of the other end of the emitter stage of Q2, the other end of resistance R 6, resistance R 12, the other end of resistance R 11, NPN type triode Q3Extremely all ground connection, the other end of the other end of resistance R 3, the other end of resistance R 2, resistance R 8, the emitter stage of positive-negative-positive triode Q5,The emitter stage of positive-negative-positive triode Q4, the emitter stage of positive-negative-positive triode Q7 all connect power supply.
High Amplifier Circuit does not adopt frequency-selective network, and circuit working is in Class B state. Resistance R 3, resistance R 6 are circuit forward static stateBiasing resistor, guarantees that NPN type triode Q1, NPN type triode Q2 are in critical closure state; Resistance R 8, resistance R 12 are circuitOppositely quiescent biasing resistance, guarantees that positive-negative-positive triode Q5, positive-negative-positive triode Q6 are in critical closure state; Resistance R 2, resistanceR11 is the load resistance of High Amplifier Circuit colelctor electrode output; Capacitor C 3, capacitor C 4 be High Amplifier Circuit input every straight coupling capacitance,Resistance R 5, resistance R 9 are input current-limiting resistance, guarantee the safety of High Amplifier Circuit.
In final stage rectification circuit, NPN type triode Q3 is negative circuit, guarantees the uniformity of output phase, resistance R 4, electricityResistance R10 is final stage input current-limiting resistance, guarantees the reliability of final stage; Resistance R 14, as leak resistance, is led to bypass NPN type three utmost pointsPipe Q1, because of the leakage current that thermal noise produces, stablizes the operating point of NPN type triode Q2; Resistance R 15 is as leak resistance, logical otherRoad positive-negative-positive triode Q6, because of the leakage current that thermal noise produces, stablizes the operating point of positive-negative-positive triode Q5.
Signal keeps output circuit to comprise capacitor C 5, resistance R 1, resistance R 7 and Zener diode D2, one end of capacitor C 5,One end of resistance R 1, one end of resistance R 7 connect respectively the negative pole of diode D1, and the other end of resistance R 7 connects Zener diodeThe negative pole of D2, the equal ground connection of positive pole of the other end of capacitor C 5, the other end of resistance R 1, Zener diode D2. Because high pressure is anti-electricSignal pulsewidth is very narrow, for guaranteeing that subsequent conditioning circuit can capture this signal reliably, therefore increase capacitor C 5 is carried out the output of inhibit signal;After electrion is attacked and finished, C5 discharges electric charge by resistance R 1, and output resets. Formed by resistance R 7 and Zener diode D2Clamp circuit can mate the follow-up circuit of 3.3V. Zener diode D2 two ends are 35kV electrion detection module 23Output.
As shown in Figure 4, vibration and physical displacement detection module 24 are the modular circuit based on three dimension acceleration sensor, shakeIt is the three dimension acceleration sensor U2 of MMA8491Q that moving and physical displacement detection module 24 can adopt model. Three-dimensional acceleration passesSensor U2 has 12 pins: pin 1(Byp) by capacitor C 10 ground connection; Pin 2(VDD) connection power supply; Pin 3(SDA) logicalCross resistance R 19 and connect pin 2(VDD); Pin 4(EN) connect pin 2(VDD by resistance R 17); Pin 5(SCL) pass through resistanceR18 connects pin 2(VDD); Pin 6 and pin 7 are earth terminal; Pin 10, pin 9, pin 8 are exported respectively X-axis, Y-axis and Z axisDetection numerical value; Pin 11 and pin 12 are unsettled. When metering device vibrates (knocking destruction) or physical displacement occurs (stolenSteal) time, three dimension acceleration sensor U2 detects in time signal and is sent to main control module 11 by detecting control module 21.
The present invention has overcome the defect of current device management, has strengthened the management of table case, and the management of his-and-hers watches box door lock, only has logicalAfter closing authorization identifying, could open table case. When having illegal unlatching or his-and-hers watches case to carry out physical damage, all can pass through RS485 communicationThe communication approach such as module are uploaded to remote control center in time; Increased anti-electricity-theft detection, can effectively detect intensive magnetism attack,35kV electrion is attacked and physical vibration is destroyed the electricity filching behaviors such as attack. Stealing event can be stored in storage medium, passes throughThe communication approach such as RS485 communication module are uploaded to remote control center in time.
Above embodiment only, for explanation technological thought of the present invention, can not limit protection scope of the present invention with this, everyThe technological thought proposing according to the present invention, any change of doing on technical scheme basis, all falls into protection model of the present inventionWithin enclosing.
Claims (7)
1. a checkout gear of being attacked for Application of Power Metering Instruments, is characterized in that: comprise main control unit and detect singleUnit, described main control unit comprises main control module, described detecting unit comprises detection control module and strong magnetic detection module, instituteMain control module, the strong magnetic detection module stated are electrically connected with detecting control module respectively, and described detecting unit also comprises that 35kV is highPress electro-detection module, described 35kV electrion detection module is electrically connected with detecting control module, the inspection of 35kV electrionSurvey reception frequency selection circuit, High Amplifier Circuit, final stage rectification circuit and signal maintenance output circuit that module comprises electrical connection successively, instituteState High Amplifier Circuit comprise NPN type triode Q1, NPN type triode Q2, positive-negative-positive triode Q5, positive-negative-positive triode Q6, resistance R 2,Resistance R 3, resistance R 5, resistance R 6, resistance R 8, resistance R 9, resistance R 12, capacitor C 3 and capacitor C 4, final stage rectification circuit comprises NPNType triode Q3, positive-negative-positive triode Q4, positive-negative-positive triode Q7, diode D1, resistance R 4, resistance R 10 and resistance R 13, electric capacityOne end of C3, one end of capacitor C 4 all connect the output of filter circuit, one end of the other end contact resistance R5 of capacitor C 3, electricityThe other end of resistance R5 one end, one end of resistance R 6 and the base stage of NPN type triode Q1 of contact resistance R3 respectively, NPN type three utmost pointsThe emitter stage of pipe Q1 connects the base stage of NPN type triode Q2, the colelctor electrode of NPN type triode Q1, the current collection of NPN type triode Q2The utmost point is one end of contact resistance R2 respectively, one end of the other end contact resistance R9 of capacitor C 4, and the other end of resistance R 9 connects respectivelyThe base stage of one end of resistance R 12, one end of resistance R 8, positive-negative-positive triode Q6, the emitter stage of positive-negative-positive triode Q6 and positive-negative-positive threeThe base stage of utmost point pipe Q5 connects, the colelctor electrode of positive-negative-positive triode Q5, the colelctor electrode of positive-negative-positive triode Q6 difference contact resistance R11'sOne end, the colelctor electrode of positive-negative-positive triode Q4 is connected with the colelctor electrode of positive-negative-positive triode Q7, the base stage of NPN type triode Q2 withBetween the emitter stage of NPN type triode Q2, be connected with resistance R 14, the base stage of positive-negative-positive triode Q5 and positive-negative-positive triode Q5 send outBetween emitter-base bandgap grading, be connected with resistance R 15, the two ends of resistance R 4 connect respectively base stage, the NPN type triode Q1 of positive-negative-positive triode Q4Colelctor electrode, the two ends of resistance R 10 connect respectively the colelctor electrode of positive-negative-positive triode Q6, the base stage of NPN type triode Q3, resistance R 13Two ends connect respectively the base stage of positive-negative-positive triode Q7, the colelctor electrode of NPN type triode Q3, the transmitting of NPN type triode Q2The other end of the other end of the utmost point, resistance R 6, the other end of resistance R 12, resistance R 11, the emitter stage of NPN type triode Q3 all connectGround, the other end of the other end of resistance R 3, the other end of resistance R 2, resistance R 8, the emitter stage of positive-negative-positive triode Q5, positive-negative-positive threeThe emitter stage of utmost point pipe Q4, the emitter stage of positive-negative-positive triode Q7 all connect power supply.
2. a kind of checkout gear of being attacked for Application of Power Metering Instruments according to claim 1, is characterized in that: instituteThe strong magnetic detection module of stating is the strong magnetic detection module circuit based on Hall element.
3. a kind of checkout gear of being attacked for Application of Power Metering Instruments according to claim 1, is characterized in that: instituteThe detecting unit of stating is involving vibrations and physical displacement detection module also, described vibration and physical displacement detection module and detection controlThe electrical connection of molding piece, vibration and physical displacement detection module are the modular circuit based on three dimension acceleration sensor.
4. according to a kind of checkout gear of being attacked for Application of Power Metering Instruments described in claim 1 or 2 or 3, its featureBe: described main control unit also comprises Far-infrared communication module, described Far-infrared communication module is electrically connected with main control module.
5. according to a kind of checkout gear of being attacked for Application of Power Metering Instruments described in claim 1 or 2 or 3, its featureBe: described main control unit also comprises RS485 communication module, described RS485 communication module is electrically connected with main control module.
6. according to a kind of checkout gear of being attacked for Application of Power Metering Instruments described in claim 1 or 2 or 3, its featureBe: described main control unit also comprises indicating lamp module, described indicator lamp communication module is electrically connected with main control module.
7. according to a kind of checkout gear of being attacked for Application of Power Metering Instruments described in claim 1 or 2 or 3, its featureBe: described main control unit also comprises that door lock drives detection module, and described door lock drives detection module and main control module electricityConnect.
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| US11536745B2 (en) | 2020-03-18 | 2022-12-27 | Landis+Gyr Innovations, Inc. | Electric meter installation issue detection based on orientation change |
| CN113075438B (en) * | 2021-03-29 | 2023-01-20 | 广东电网有限责任公司计量中心 | Electricity stealing detection method and device, electricity stealing prevention device and readable storage medium |
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| CN2042392U (en) * | 1988-11-28 | 1989-08-09 | 沈阳工业大学 | A.c. electric arc welder |
| CN102094740A (en) * | 2011-01-17 | 2011-06-15 | 吴映波 | Digital direct-current igniter for motorcycle |
| CN103633876A (en) * | 2013-12-19 | 2014-03-12 | 东文高压电源（天津）有限公司 | Isolation-control bipolar high-frequency high-voltage pulse power supply circuit |
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| CN2624216Y (en) * | 2003-03-04 | 2004-07-07 | 冯占国 | Automatic earth fault dectector for highvoltage line |
| CN203164250U (en) * | 2013-04-16 | 2013-08-28 | 栖霞市供电公司 | Intelligent anti-electricity-theft protection device |
| CN103645386B (en) * | 2013-12-20 | 2016-08-17 | 天津鹏安数迅科技有限公司 | High-voltage electric pulse detection device |
| CN103954816A (en) * | 2014-04-30 | 2014-07-30 | 国网上海市电力公司 | Inelegant remote anti-electricity-stealing inspection method |
| CN204066323U (en) * | 2014-09-17 | 2014-12-31 | 杭州普安科技有限公司 | A kind of pick-up unit attacked for Application of Power Metering Instruments |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2042392U (en) * | 1988-11-28 | 1989-08-09 | 沈阳工业大学 | A.c. electric arc welder |
| CN102094740A (en) * | 2011-01-17 | 2011-06-15 | 吴映波 | Digital direct-current igniter for motorcycle |
| CN103633876A (en) * | 2013-12-19 | 2014-03-12 | 东文高压电源（天津）有限公司 | Isolation-control bipolar high-frequency high-voltage pulse power supply circuit |
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Denomination of invention: A detection device for detecting attacks on power metering equipment Granted publication date: 20170118 Pledgee: Guotou Taikang Trust Co.,Ltd. Pledgor: HANGZHOU PUAN TECHNOLOGY Co.,Ltd. Registration number: Y2024980011351 |