CN208208685U - The antimagnetic countermeasure set and intelligent micro-circuit breaker of intelligent micro-circuit breaker - Google Patents
The antimagnetic countermeasure set and intelligent micro-circuit breaker of intelligent micro-circuit breaker Download PDFInfo
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- CN208208685U CN208208685U CN201721741725.1U CN201721741725U CN208208685U CN 208208685 U CN208208685 U CN 208208685U CN 201721741725 U CN201721741725 U CN 201721741725U CN 208208685 U CN208208685 U CN 208208685U
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- circuit breaker
- magnetic field
- intelligent micro
- breaker
- control unit
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- 230000005291 magnetic effect Effects 0.000 claims abstract description 78
- 238000001514 detection method Methods 0.000 claims abstract description 52
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims description 14
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 8
- 150000002910 rare earth metals Chemical class 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000013461 design Methods 0.000 claims description 4
- 238000011897 real-time detection Methods 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 238000005259 measurement Methods 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract 1
- 230000007257 malfunction Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 229910000859 α-Fe Inorganic materials 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000005292 diamagnetic effect Effects 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 241001274660 Modulus Species 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000005404 monopole Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
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Abstract
The utility model discloses a kind of antimagnetic countermeasure sets of intelligent micro-circuit breaker, including control unit and magnetic field detection unit, magnetic field detection unit is connected with control unit, whether for detecting environmental magnetic field strength signal normally, control unit according to magnetic field intensity signal normally whether carry out breaker on/off switch position detection control: when magnetic field strength exception, control mechanical microswitch pairing open position detected；When magnetic field strength is normal, control Hall detection switch detects the on/off switch position of breaker.The invention also discloses a kind of intelligent micro-circuit breakers, including actuator, driving member, Switching Power Supply, breaker body and device as described above, actuator is connected by driving member with breaker body, breaker body includes mechanical microswitch, magnetite is provided on driving member, the side of magnetite is provided with the Hall detection switch for detecting magnetite.The device and breaker of the utility model all have the advantages that position detection is reliably accurate.
Description
Technical field
The utility model relates generally to Electric Energy Metering Technology field, refers in particular to a kind of anti-magnetic disturbance dress of intelligent micro-circuit breaker
It sets and intelligent micro-circuit breaker.
Background technique
As shown in Figure 1, the position detection (being switched on or off) of intelligent micro-circuit breaker mostly uses greatly Hall element and rotation
Magnetite (is mounted on the driving member of connection motor and breaker) cooperation and realizes and detected that wherein Hall element belongs to a kind of magnetic
Field detecting element, magnetic field strength, which reaches 6mT, can activate work threshold values and work normally；When there are external magnetic field interference
(the diamagnetic field interference standard of conventional electronic product requires to be greater than 200mT at present, much larger than the work threshold values of Hall switch), on/off switch
Position will appear the case where detecting in advance, single-chip microcontroller will not activate motor rotate or rotate it is insufficient, thus occur tripping or
The case where malfunction.
The executing agency of intelligent micro-circuit breaker generallys use direct current permanent magnet motor, and direct current permanent magnet motor has small in size
Ingeniously, advantage easy to control, but the main pole magnetic shoe material of Conventional permanent magnet motor is ferrite sintered body, and diamagnetic jamming performance is poor,
It is interfered vulnerable to external magnetic field, the case where tripping or malfunction easily occurs.
The power supply of intelligent micro-circuit breaker is using Switching Power Supply as power source, and wherein Switching Power Supply is as a kind of AC-DC
Module, core devices pulse transformer, a kind of practical electromagnetic conversion device can make transformer when there is external strong magnetic disturbance
Magnetic flux leakage is generated in conversion process, switch power efficiency is caused to reduce；Switching Power Supply overall output reduces, and easily causes tripping
The case where.
Due to intelligent micro-circuit breaker be for cooperate intelligent electric meter realize expense control function, intelligent micro-circuit breaker it is above-mentioned
Magnetic disturbance loophole is easily utilized by criminal, to carry out stealing.In conclusion the micro- disconnected strong magnetic safeguard function of intelligence combines
Practical application scene is particularly important.But intelligent micro-circuit breaker is a kind of small size product, compact-sized, industry at present
General monopole product modulus only has 2 moduluses (18mm), causes magnet-sensitive element and product outer distance limited, traditional electromagnetic screen
It is limited to cover method antimagnetic effect of the method as installed shielding case additional, electromagnetic interference cannot be prevented completely.
Utility model content
The technical problems to be solved in the utility model is that for technical problem of the existing technology, this is practical new
Type provides a kind of circuit-breaker switching on-off position detection, and reliably accurately the antimagnetic countermeasure set of intelligent micro-circuit breaker and intelligence are micro-
Type breaker.
In order to solve the above technical problems, the utility model proposes technical solution are as follows:
A kind of antimagnetic countermeasure set of intelligent micro-circuit breaker, including control unit and magnetic field detection unit, the magnetic field
Detection unit is connected with control unit, normal for the magnetic field intensity signal in real-time detection intelligent micro-circuit breaker local environment
Whether and will test signal and be sent to control unit, described control unit according to magnetic field intensity signal normally whether carry out breaker
On/off switch position detection control: when magnetic field intensity signal exception, control unit controls the mechanical micro-moved of intelligent micro-circuit breaker
Switch detects the on/off switch position of breaker；When magnetic field intensity signal is normal, it is disconnected that control unit controls intelligent micro
The Hall detection switch of road device detects the on/off switch position of breaker with magnetite cooperation.
As a further improvement of the above technical scheme:
The magnetic field detection unit is magnetic field measurement instrument.
Described control unit is using the controller inside intelligent micro-circuit breaker.
The utility model further correspondingly discloses a kind of intelligent micro-circuit breaker, including actuator, driving member, Switching Power Supply,
The antimagnetic countermeasure set of breaker body and intelligent micro-circuit breaker as described above, the actuator by driving member with it is described
Breaker body is connected, and the breaker body includes mechanical microswitch, and magnetite, the magnetite are provided on the driving member
Side be provided with the Hall detection switch for detecting magnetite.
As a further improvement of the above technical scheme:
The rated power design margin of the Switching Power Supply is greater than 50%.
The actuator is direct current permanent magnet motor；The direct current permanent magnet motor use main pole for the direct current of rare earth material forever
Magneto.
The driving member is Multi-stage transmission gear；The magnetite is installed on wherein one-stage gear.
Compared with the prior art, the advantages of the utility model are:
The antimagnetic countermeasure set and intelligent micro-circuit breaker of the intelligent micro-circuit breaker of the utility model, mechanical micro-moved is opened
It closes and is combined with Hall detection, wherein Hall detection is preferential, the mode of mechanical microswitch auxiliary；Magnetic field strength it is normal (i.e. without
Magnetic disturbance) when, circuit breaker position detection uses Hall detection pattern, because Hall detection switch works under no magnetic disturbance environment
When, reliability index is switched much higher than mechanical contact-type, since mechanical microswitch uses the closure and disconnection of physical contact
Position signal is transmitted, mechanical contact easily aoxidizes in air, occurs being below electricity in terms of poor contact, service life and reliability
Sub- Hall detection switch；But mechanical microswitch has the characteristics that very strong diamagnetic interference due to the non magnetic mechanical contact of use,
When therefore (having magnetic disturbance) in magnetic field strength exception, breaker on/off switch position is examined using mechanical microswitch
It surveys, can effectively avoid switch malfunction or misaction caused by magnetic disturbance.
Detailed description of the invention
Fig. 1 is the frame assumption diagram of the intelligent micro-circuit breaker of the prior art.
Fig. 2 is the frame assumption diagram of the intelligent micro-circuit breaker in the utility model.
Fig. 3 is ferrite material and rare earth material hysteresis loop comparison diagram in the utility model.
Fig. 4 is the method flow diagram of anti-magnetic disturbance in the utility model.
Figure label indicates: 1, control unit；2, magnetic field detection unit；3, direct current permanent magnet motor；4, driving member；5, breaking
Device ontology；6, Switching Power Supply.
Specific embodiment
The utility model is further described below in conjunction with Figure of description and specific embodiment.
As shown in Fig. 2, the utility model discloses a kind of antimagnetic countermeasure set of intelligent micro-circuit breaker, including control is single
Member 1 and magnetic field detection unit 2, magnetic field detection unit 2 are connected with control unit 1, are used for real-time detection intelligent micro-circuit breaker institute
Magnetic field intensity signal in place's environment normally whether and will test signal to be sent to 1,1 control unit of control unit strong according to magnetic field
Carry out breaker on/off switch position detection control whether spending signal normally: when magnetic field intensity signal exception, control unit 1 is controlled
The mechanical microswitch of intelligent micro-circuit breaker detects the on/off switch position of breaker；When magnetic field intensity signal is normal
When, control unit 1 controls the Hall detection switch of intelligent micro-circuit breaker and magnetite cooperate to the on/off switch position of breaker into
Row detection.The antimagnetic countermeasure set structure of the intelligent micro-circuit breaker of the utility model is simple, easy to operate.
The antimagnetic countermeasure set of the intelligent micro-circuit breaker of the utility model mutually ties mechanical microswitch and Hall detection
It closes, wherein Hall detection is preferential, the mode of mechanical microswitch auxiliary；When magnetic field strength normal (i.e. without magnetic disturbance), breaker
Position detection uses Hall detection pattern, because when Hall detection switch works under no magnetic disturbance environment, reliability index
It is switched much higher than mechanical contact-type, since mechanical microswitch transmits position signal using the closure and disconnection of physical contact,
Mechanical contact easily aoxidizes in air, occurs being below electron Hall detection switch in terms of poor contact, service life and reliability；
But mechanical microswitch has the characteristics that very strong diamagnetic interference, therefore in magnetic field strength due to using non magnetic mechanical contact
When (having magnetic disturbance) when abnormal, breaker on/off switch position is detected using mechanical microswitch, can effectively avoid magnetic
Switch malfunction or misaction caused by interference.
In the present embodiment, magnetic field detection unit 2 is mountable to the outside or inside of breaker body 5；It can specifically use
Magnetic field strong detecting instrument.Wherein control unit 1 can be using the controller (MCU in Fig. 3) inside intelligent micro-circuit breaker；When
So, control unit 1 can also use other independent control equipment.
As shown in figure 4, the specific works of the antimagnetic countermeasure set of the intelligent micro-circuit breaker of the present embodiment include following step
It is rapid:
Magnetic field strength in S01,2 real-time detection intelligent micro-circuit breaker local environment of magnetic field detection unit normally whether；
S02, when magnetic field strength exception, control unit 1 control intelligent micro-circuit breaker mechanical microswitch to open circuit
It is detected the on/off switch position of device；When normal, control unit 1 then controls the Hall detection switch and magnetic of intelligent micro-circuit breaker
Stone fit system detects the on/off switch position of breaker.
Specifically, in step S01, when magnetic field strength be greater than preset standard magnetic field strength when then judge exception, otherwise for
Normally.Wherein preset standard magnetic field strength be 3~5mT(within this range, hall detection component is to work normally), specific number
Value can be adjusted according to on-site actual situations.Certainly, in other embodiments, mechanical microswitch and Hall can also be used
The mode that detecting element matches judges whether magnetic field strength is abnormal；It is in close a floodgate in hall detection component detection breaker and (divide
Lock) position when, at this time mechanical microswitch be in closure (disconnection) state, show that magnetic field strength is normal at this time, no magnetic disturbance；Such as
It is not correspond to, then shows magnetic field strength exception, there are magnetic disturbances, such as hall detection component detection breaker to be in closing position
When, and mechanical microswitch is also in off-state, then a possibility that showing hall detection component there are advancements, there are magnetic
Interference.
As shown in Fig. 2, the invention also discloses a kind of intelligent micro-circuit breaker, including actuator, driving member 4, open
Powered-down source 6, breaker body 5 and intelligent micro-circuit breaker as described above antimagnetic countermeasure set, actuator passes through driving member 4
It is connected with breaker body 5, breaker body 5 includes mechanical microswitch, is provided with magnetite, the side of magnetite on driving member 4
It is provided with the Hall detection switch for detecting magnetite.
In the present embodiment, actuator is direct current permanent magnet motor 3, and wherein magnetic pole uses rare earth material, rare earth material magnetic energy
Much higher than existing ferrite material, there is very high coercivity, rare earth material is in current permanent-magnet material as permanent-magnet material
Magnetic energy product is maximum, has very strong anti-interference ability to strong magnetic disturbance, wherein ferrite and rare earth material magnetic can compare such as
Shown in Fig. 3, wherein inner ring ringed line is Ferrite Material hysteresis loop, and outer ring ringed line is rare earth material hysteresis loop.
In the present embodiment, the rated power design margin of Switching Power Supply 6 is greater than 50%；Such as by former 6 design power of Switching Power Supply
12W increases to 18W, guarantees in magnetic disturbance, provides the power output met the requirements.
In the present embodiment, driving member 4 is Multi-stage transmission gear, is intermeshed between Multi-stage transmission gear；Magnetite is installed on
Wherein on one-stage gear, Hall detection switch be then installed on gear side (specially two, respectively correspond closing position and point
Gate position), the detection of circuit-breaker switching on-off position can be obtained in the detection by Hall detection switch to magnetite.In addition, mechanical
Microswitch uses the auxiliary contact of breaker body 5；It is of course also possible to be the mechanical microswitch that gear side is set,
Position by detecting gear judges the divide-shut brake of breaker body 5.
When detecting to breaker before, when external magnetic field fixed point interference strength is greater than 20mT, that is, there is malfunction
Phenomenon；When external magnetic field interference strength increases to 250mT, there is misaction, cannot achieve on/off switch；After removing magnetic disturbance,
There is situation out of strength of closing a floodgate.After improving above, when external magnetic field fixed point degree of disturbance is less than 300mT, normal occlusion can be still realized
Separating brake movement does not occur abnormal phenomenon after removing magnetic disturbance.
Although the utility model has been disclosed with preferred embodiment as above, it is not intended to limit the utility model.It is any
Those skilled in the art, in the case where not departing from technical solutions of the utility model range, all using the disclosure above
Technology contents many possible changes and modifications are made to technical solutions of the utility model, or be revised as the equivalent of equivalent variations
Embodiment.Therefore, all contents without departing from technical solutions of the utility model, according to the utility model technical spirit to the above reality
Any simple modifications, equivalents, and modifications that example is done are applied, should all be fallen in the range of technical solutions of the utility model protection.
Claims (7)
1. a kind of antimagnetic countermeasure set of intelligent micro-circuit breaker, which is characterized in that including control unit (1) and magnetic field detection list
First (2), the magnetic field detection unit (2) are connected with control unit (1), are used for real-time detection intelligent micro-circuit breaker local environment
In magnetic field intensity signal normally whether and will test signal and be sent to control unit (1), described control unit (1) is according to magnetic field
Strength signal normally whether carry out breaker on/off switch position detection control: when magnetic field intensity signal exception, control unit (1)
The mechanical microswitch of control intelligent micro-circuit breaker detects the on/off switch position of breaker；When magnetic field intensity signal just
Chang Shi, the Hall detection switch that control unit (1) controls intelligent micro-circuit breaker cooperate the on/off switch position to breaker with magnetite
It sets and is detected.
2. the antimagnetic countermeasure set of intelligent micro-circuit breaker according to claim 1, which is characterized in that the magnetic field detection
Unit (2) is magnetic field measurement instrument.
3. the antimagnetic countermeasure set of intelligent micro-circuit breaker according to claim 1 or 2, which is characterized in that the control
Unit (1) is using the controller inside intelligent micro-circuit breaker.
4. a kind of intelligent micro-circuit breaker, which is characterized in that including actuator, driving member (4), Switching Power Supply (6), breaker sheet
The antimagnetic countermeasure set of body (5) and the intelligent micro-circuit breaker as described in any one of claims 1 to 3, the actuator
It is connected by driving member (4) with the breaker body (5), the breaker body (5) includes mechanical microswitch, the biography
Magnetite is provided on moving part (4), the side of the magnetite is provided with the Hall detection switch for detecting magnetite.
5. intelligent micro-circuit breaker according to claim 4, which is characterized in that the rated power of the Switching Power Supply (6)
Design margin is greater than 50%.
6. intelligent micro-circuit breaker according to claim 4 or 5, which is characterized in that the actuator is AC permanent magnet electricity
Machine (3)；The direct current permanent magnet motor (3) uses main pole for the direct current permanent magnet motor of rare earth material.
7. intelligent micro-circuit breaker according to claim 4 or 5, which is characterized in that the driving member (4) is Multi-stage transmission
Gear；The magnetite is installed on wherein one-stage gear.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721741725.1U CN208208685U (en) | 2017-12-14 | 2017-12-14 | The antimagnetic countermeasure set and intelligent micro-circuit breaker of intelligent micro-circuit breaker |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721741725.1U CN208208685U (en) | 2017-12-14 | 2017-12-14 | The antimagnetic countermeasure set and intelligent micro-circuit breaker of intelligent micro-circuit breaker |
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| CN208208685U true CN208208685U (en) | 2018-12-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2017
- 2017-12-14 CN CN201721741725.1U patent/CN208208685U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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