CN208207050U - Measuring device for line current - Google Patents
Measuring device for line current Download PDFInfo
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- CN208207050U CN208207050U CN201820864906.1U CN201820864906U CN208207050U CN 208207050 U CN208207050 U CN 208207050U CN 201820864906 U CN201820864906 U CN 201820864906U CN 208207050 U CN208207050 U CN 208207050U
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Abstract
The utility model discloses a measuring device of line current, including first two-axis magnetic sensor, second diaxon magnetic sensor and treater. When the current value is measured, the first magnetic sensitivity direction of the first two-axis magnetic sensor and the first magnetic sensitivity direction of the second two-axis magnetic sensor are collinear and in the same direction, the second magnetic sensitivity direction of the first two-axis magnetic sensor and the second magnetic sensitivity direction of the second two-axis magnetic sensor are parallel and in the same direction, and the magnetic sensitivity plane formed by the first magnetic sensitivity directions and the second magnetic sensitivity directions is perpendicular to the current-carrying straight wire to be measured, so that the first magnetic induction intensity and the second magnetic induction intensity can be obtained, and finally the calculation of the current value of the current-carrying straight wire to be measured is realized by combining the relative position, so that the measurement of the line current is realized, the measurement of the line current can be realized under the condition that a current detection device is prevented from being connected into a primary loop, and the installation difficulty is reduced.
Description
Technical field
The utility model relates to wireline inspection field, in particular to a kind of measuring device of line current.
Background technique
Line current reflects operation states of electric power system, is one of the important parameter that measurement is had in electric system.
In the prior art, line current can by current transformer or Hall current sensor or it is built-in one section it is primary
The current sense of return conductors and anisotropic magnetoresistance or giant magnetoresistance or tunnel magneto resistance measures, still, no matter sharp
Line current is measured with above-mentioned any current measurement device, requires to access current sensing device into primary circuit, installation is not
It is convenient.Also, since current transformer and Hall current sensor are required to iron core, so current transformer and Hall current pass
The volume and quality of sensor are larger, further increase the installation difficulty of current transformer and Hall current sensor.Meanwhile
For the built-in current sensor of one section of primary circuit conductor and anisotropic magnetoresistance or giant magnetoresistance or tunnel magneto resistance
Moreover, volume is also bigger for its volume is compared with general current sensor, the installation difficulty of itself is further increased.
Therefore, the measurement of line current how is realized in the case where avoiding current sensing device accessing primary circuit,
Reduce installation difficulty to be a technical problem that technical personnel in the field need to solve at present.
Utility model content
The purpose of the utility model is to provide a kind of measuring devices of line current, can avoid current sensing device
The measurement that line current is realized in the case where accessing primary circuit, reduces installation difficulty.
In order to solve the above-mentioned technical problem, a kind of measuring device for line current that the utility model also provides, comprising:
For acquiring the first of the first magnetic induction intensity that carrying flow direct conducting wire to be measured generates on the magnetic susceptibility direction of itself
Two axial magnetic sensors；
For acquiring the second magnetic induction intensity that the carrying flow direct conducting wire to be measured generates on the magnetic susceptibility direction of itself
Second liang of axial magnetic sensor；
It is connect respectively with first liang of axial magnetic sensor and second liang of axial magnetic sensor, for according to described first
The phase of magnetic induction intensity, second magnetic induction intensity and first liang of axial magnetic sensor and second liang of axial magnetic sensor
The processor of the current value of the carrying flow direct conducting wire to be measured is calculated position；
When measuring the current value, the first magnetic susceptibility direction of first liang of axial magnetic sensor and second liang of axis
Second magnetic susceptibility direction of conllinear and equidirectional, the described first liang of axial magnetic sensor in the first magnetic susceptibility direction of Magnetic Sensor and institute
The the second magnetic susceptibility direction for stating second liang of axial magnetic sensor is parallel and equidirectional, by each first magnetic susceptibility direction and each described
The magnetic susceptibility plane that second magnetic susceptibility direction is constituted is perpendicular to the carrying flow direct conducting wire to be measured.
Preferably, further includes:
Be connected to the processor, for measure first liang of axial magnetic sensor and second liang of axial magnetic sensor it
Between distance range sensor.
Preferably, further includes:
It is connected to the processor, for showing the liquid crystal display of the current value.
Preferably, further includes:
It is connect respectively with first liang of axial magnetic sensor and second liang of axial magnetic sensor, for respectively described the
One liang of axial magnetic sensor and second liang of axial magnetic sensor provide the DC power supply of DC voltage.
Preferably, the DC power supply includes the voltage-stablizer for being in stable state for adjusting the DC voltage.
Preferably, further includes:
It is connected to the processor, is used to indicate the indicator light of the working condition of the measuring device.
The measuring device of line current provided by the utility model, including first liang of axial magnetic sensor, second liang of axis magnetic pass
Sensor and processor.When measuring current value, it is only necessary to guarantee the first magnetic susceptibility direction and second of first liang of axial magnetic sensor
First magnetic susceptibility direction of two axial magnetic sensors is conllinear and equidirectional, the second magnetic susceptibility direction and of first liang of axial magnetic sensor
Second magnetic susceptibility direction of two liang of axial magnetic sensors is parallel and equidirectional and by each first magnetic susceptibility direction and each second magnetic susceptibility
The magnetic susceptibility plane that direction is constituted can obtain the first magnetic induction intensity and the second magnetic induction is strong perpendicular to carrying flow direct conducting wire to be measured
Degree is finally realized to the calculating of the current value of carrying flow direct conducting wire to be measured in conjunction with relative position, the survey of line current is realized with this
Amount.Without first liang of axial magnetic sensor and/or second liang of axial magnetic sensor are accessed primary circuit, installation is simple.Meanwhile two
Axial magnetic sensor had not both needed iron core or magnetic core, did not needed copper wire winding yet, so smaller volume and quality, was also convenient for
The position of one liang of axial magnetic sensor and second liang of axial magnetic sensor is adjusted.So using the measuring device of this line current, it can
The measurement that line current is realized in the case where avoiding current sensing device accessing primary circuit, reduces installation difficulty.
Detailed description of the invention
In order to illustrate more clearly of the utility model embodiment, letter will be done to attached drawing needed in the embodiment below
Single introduction, it should be apparent that, the drawings in the following description are merely some embodiments of the present invention, general for this field
For logical technical staff, without creative efforts, it can also be obtained according to these attached drawings other accompanying drawings.
Fig. 1 is a kind of composition schematic diagram of the measuring device of line current provided by the embodiment of the utility model；
Fig. 2 is a kind of line current instrumentation plan provided by the embodiment of the utility model.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
It clearly and completely describes, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than all real
Apply example.Based on the embodiments of the present invention, those of ordinary skill in the art are under the premise of making the creative labor,
Every other embodiment obtained, belongs to scope of protection of the utility model.
The purpose of the utility model is to provide a kind of measuring devices of line current, can avoid current sensing device
The measurement that line current is realized in the case where accessing primary circuit, reduces installation difficulty.
In order to make those skilled in the art better understand technical solutions of the utility model, with reference to the accompanying drawing and specifically
The utility model is described in further detail for embodiment.
Fig. 1 is a kind of composition schematic diagram of the measuring device of line current provided by the embodiment of the utility model.Such as Fig. 1 institute
Show, the measuring device of line current provided in this embodiment includes:
For acquiring the first of the first magnetic induction intensity that carrying flow direct conducting wire to be measured generates on the magnetic susceptibility direction of itself
Two axial magnetic sensors 10；
For acquiring the second of the second magnetic induction intensity that carrying flow direct conducting wire to be measured generates on the magnetic susceptibility direction of itself
Two axial magnetic sensors 11；
It is connect respectively with first liang of axial magnetic sensor 10 and second liang of axial magnetic sensor 11, for strong according to the first magnetic induction
The relative position of degree, the second magnetic induction intensity and first liang of axial magnetic sensor 10 and second liang of axial magnetic sensor 11 calculates load to be measured
Flow the processor 12 of the current value of straight wire；
When measuring current value, the first magnetic susceptibility direction of first liang of axial magnetic sensor 10 and second liang of axial magnetic sensor 11
The first magnetic susceptibility direction is conllinear and equidirectional, first liang of axial magnetic sensor 10 the second magnetic susceptibility direction and second liang of axis magnetic pass
Second magnetic susceptibility direction of sensor 11 is parallel and equidirectional, is made of each first magnetic susceptibility direction and each second magnetic susceptibility direction
Magnetic susceptibility plane is perpendicular to carrying flow direct conducting wire to be measured.
Wherein, it should be noted that carrying flow direct conducting wire to be measured should be Long Straight Current-carrying conducting wire, when aliving, generate
Magnetic field should meet and cut down your law than Ao-Sa.There are two orthogonal magnetic susceptibility directions for two axial magnetic sensors tool, then correspond to
, the magnetic susceptibility direction of first liang of axial magnetic sensor 10 includes orthogonal first magnetic susceptibility direction and the second magnetic susceptibility side
To；The magnetic susceptibility direction of second liang of axial magnetic sensor 11 includes orthogonal first magnetic susceptibility direction and the second magnetic susceptibility side
To.First magnetic induction intensity includes that carrying flow direct conducting wire to be measured generates on the first magnetic susceptibility direction of first liang of axial magnetic sensor 10
The first magnetic induction intensity and carrying flow direct conducting wire to be measured generate on the second magnetic susceptibility direction of first liang of axial magnetic sensor 10
First magnetic induction intensity；Second magnetic induction intensity includes first magnetosensitive of the carrying flow direct conducting wire to be measured in second liang of axial magnetic sensor 11
Second magnetic susceptibility of the second magnetic induction intensity and carrying flow direct conducting wire to be measured generated on sense direction in second liang of axial magnetic sensor 11
The second magnetic induction intensity generated on direction.The relative position master of first liang of axial magnetic sensor 10 and second liang of axial magnetic sensor 11
Refer to the position as the foundation for determining the distance between first liang of axial magnetic sensor 10 and second liang of axial magnetic sensor 11
Information can be preset, and can also be inputted again when measuring current value, may be provided for first liang of axis magnetic of measurement
The range sensor of the distance between sensor 10 and second liang of axial magnetic sensor 11 is acquired, and the utility model does not do this
It limits.
First liang of axial magnetic sensor 10 is connect with processor 12, for acquiring carrying flow direct conducting wire to be measured in itself magnetic susceptibility
The first magnetic induction intensity generated on direction, second liang of axial magnetic sensor 11 is connect with processor 12, for acquiring current-carrying to be measured
The second magnetic induction intensity that straight wire generates on the magnetic susceptibility direction of itself.When acquisition the first magnetic induction intensity, the second magnetic strength
When answering intensity and relative position, it is not necessary that first liang of axial magnetic sensor 10 and/or second liang of axial magnetic sensor 11 are accessed primary return
Road, as long as guaranteeing the first magnetic susceptibility direction of first liang of axial magnetic sensor 10 and the first magnetic susceptibility of second liang of axial magnetic sensor 11
Direction is conllinear and equidirectional；The second of second magnetic susceptibility direction of first liang of axial magnetic sensor 10 and second liang of axial magnetic sensor 11
Magnetic susceptibility direction is parallel and equidirectional；It is hung down by the magnetic susceptibility plane that each first magnetic susceptibility direction and each second magnetic susceptibility direction are constituted
Directly in carrying flow direct conducting wire to be measured, the contactless of first liang of axial magnetic sensor 10 and second liang of axial magnetic sensor 11 is realized
Installation is installed more convenient.
Processor 12 is getting the first magnetic induction by first liang of axial magnetic sensor 10 and second liang of axial magnetic sensor 11
It, can be in conjunction with the opposite of first liang of axial magnetic sensor 10 and second liang of axial magnetic sensor 11 after intensity and the second magnetic induction intensity
Position calculates carrying flow direct conducting wire current value to be measured, i.e. line current, realizes the measurement to line current with this.In addition, being worth note
Current value after obtaining current value, can be stored in memory the analysis processing for carrying out the later period so as to user by meaning,
Corresponding display module can be set, processor 12 after obtaining current value, can in real time by current value show so as to
User checks that certainly, current value can also be shown in real time on one side and be checked in time for user by processor 12, can also be with one
While being stored in memory current value for the processing of user's post analysis, the utility model does not limit this.
It in specific implementation, can be with first liang of axial magnetic sensor 10 of measured in advance in order to promote the accuracy of measurement result
The first proportionality coefficient and second liang of axial magnetic sensor 11 the second proportionality coefficient；To first liang of axial magnetic sensor 10 and second
After two axial magnetic sensor DC voltages, the first output voltage and second liang of axis magnetic of first liang of axial magnetic sensor 10 are obtained respectively
Second output voltage of sensor 11；The first magnetic induction intensity that the product of first output voltage and the first proportionality coefficient is used as
With using the product of the second output voltage and the second proportionality coefficient as the second magnetic induction intensity.Certainly, in order to obtain more accurately
Measurement result should have the DC voltage that first liang of axial magnetic sensor 10 and second liang of axial magnetic sensor 11 apply certain steady
It is qualitative.
Using measuring device provided in this embodiment, the foundation for calculating the current value of carrying flow direct conducting wire to be measured has opposite position
It sets, the first magnetic induction intensity and the second magnetic induction intensity, without including carrying flow direct conducting wire to be measured and first liang of axial magnetic sensor
The distance of distance and/or second liang of axial magnetic sensor, that is to say, that installing first liang of axial magnetic sensor and second liang of axis magnetic biography
When sensor, as long as the magnetic susceptibility plane that guarantee each first magnetic susceptibility direction and each second magnetic susceptibility direction are constituted is perpendicular to load to be measured
Straight wire is flowed, carrying flow direct conducting wire to be measured is at a distance from first liang of axial magnetic sensor and/or the distance of second liang of axial magnetic sensor is remote
The implementation that closely will not influence the utility model embodiment, can be realized the measurement of line current.
In order to enable those skilled in the art to more fully understand technical solution provided by the utility model, below to line
The calculating process of road electric current is briefly described.
When with relative position, the first magnetic induction intensity and the second magnetic induction intensity for according to line current is calculated, specifically may be used
According to formulaOrIt is calculated；
Wherein, I is current value, μ0For space permeability, π is pi, and D is first liang of axial magnetic sensor and second liang of axis
The distance between Magnetic Sensor, B1xAnd B1yOn itself the first magnetic susceptibility direction that respectively first liang of axial magnetic sensor measures
The first magnetic induction intensity and itself the second magnetic susceptibility direction on the first magnetic induction intensity, B2xAnd B2yRespectively second liang of axis
On the second magnetic induction intensity and itself the second magnetic susceptibility direction on itself the first magnetic susceptibility direction that Magnetic Sensor measures
Second magnetic induction intensity.
In order to make those skilled in the art better understand technical solution provided by the utility model, below with reference to attached
Figure, derives the formula for the calculating line current that the utility model embodiment is mentioned.
Fig. 2 is a kind of line current instrumentation plan provided by the embodiment of the utility model.As shown in Fig. 2, small bullet
Carrying flow direct conducting wire position to be measured is represented, the small black rectangle on the left side Fig. 2 represents first liang of axial magnetic sensor position, Fig. 2
The small black rectangle on the right represents second liang of axial magnetic sensor position, and D is that first liang of axial magnetic sensor and second liang of axis magnetic pass
The distance between sensor, the arrow direction of x-axis are that the first magnetic susceptibility direction of first liang of axial magnetic sensor and second liang of axis magnetic pass
First magnetic susceptibility direction of sensor, the arrow direction of y1 axis are the second magnetic susceptibility direction of first liang of axial magnetic sensor, y2 axis
Arrow direction is the second magnetic susceptibility direction of second liang of axial magnetic sensor, and x-axis is mutually perpendicular to y-axis, B1xAnd B1yRespectively first
The first magnetic induction intensity on the first magnetic induction intensity and y1 axis direction in the x-axis direction that two axial magnetic sensors measure, B2x
And B2ySecond on the second magnetic induction intensity and y2 axis direction in x-axis direction that respectively second liang of axial magnetic sensor measures
Magnetic induction intensity.d1、d2Respectively first liang of axial magnetic sensor and second liang of axial magnetic sensor position to long straight conductor away from
From.θ1For B1xAnd B1yVector sum direction and x-axis direction angle, θ2For B2xAnd B2yVector sum direction and x-axis direction
Angle.
Your law is cut down according to than Ao-Sa:
In formula (1) and formula (2), I is current value, is amount to be solved；μ0It is known constant for space permeability；π is circle
Frequency is known constant；d1、d2Respectively first liang of axial magnetic sensor and second liang of axial magnetic sensor position are directly led to length
The distance of line is unknown quantity.
Positional relationship according to Fig.2, it is known that:
So having:
In formula (3)-formula (6), θ1For B1xAnd B1yVector sum direction and x-axis direction angle, θ2For B2xAnd B2yVector
The direction of sum and the angle of x-axis direction, are unknown quantitys.
Joint type (3)~formula (6) can obtain:
Selecting type (7), which substitutes into formula (1), to obtain formula:
Selecting type (8), which substitutes into formula (2), to obtain formula:
As it can be seen that can find out current value I in selecting type (9) or formula (10), that is, realize the measurement of line current.
It should be noted that being according to calculating route with relative position, the first magnetic induction intensity and the second magnetic induction intensity
The method of electric current is not the main improvement of the utility model.
In conclusion the measuring device of line current provided by the utility model, including first liang of axial magnetic sensor, second
Two kinds of Magnetic Sensors and processor.When measuring current value, it is only necessary to guarantee the first magnetic susceptibility side of first liang of axial magnetic sensor
To the second magnetic susceptibility conllinear and equidirectional with the first magnetic susceptibility direction of second liang of axial magnetic sensor, first liang of axial magnetic sensor
Direction is parallel and equidirectional with the second magnetic susceptibility direction of second liang of axial magnetic sensor and by each first magnetic susceptibility direction and Ge
The magnetic susceptibility plane that two magnetic susceptibility directions are constituted can obtain the first magnetic induction intensity and second perpendicular to carrying flow direct conducting wire to be measured
Magnetic induction intensity is finally realized to the calculating of the current value of carrying flow direct conducting wire to be measured in conjunction with relative position, realizes route with this
The measurement of electric current.Without first liang of axial magnetic sensor and/or second liang of axial magnetic sensor are accessed primary circuit, installation letter
It is single.Meanwhile two axial magnetic sensor both do not needed iron core or magnetic core, do not need copper wire winding yet, thus volume and quality compared with
Small, the position for being also convenient for first liang of axial magnetic sensor and second liang of axial magnetic sensor is adjusted.So using the survey of this line current
Device is measured, the measurement of line current can be realized in the case where avoiding current sensing device accessing primary circuit, reduces peace
Fill difficulty.
It is based on the above embodiment, as one preferred in order to promote the degree of automation and flexibility of this measuring device
Embodiment, the measuring device of line current further include:
Connect with processor 12, for measure between first liang of axial magnetic sensor 10 and second liang of axial magnetic sensor 11 away from
From range sensor.
In the present embodiment, it directly goes to obtain first liang of axial magnetic sensor using range sensor and second liang of axis magnetic senses
The distance between device, compared to the distance between first liang of axial magnetic sensor of user's manual measurement and second liang of axial magnetic sensor
Speech, the degree of automation are higher.Compared to a distance value is preset, in route current measurement, first liang of axis magnetic is kept to pass
The distance between sensor and second liang of axial magnetic sensor are necessary for for preset distance value, and flexibility ratio is higher.
For the ease of user's real time inspection measurement result, based on the above embodiment, as a preferred embodiment, line
The measuring device of road electric current further include:
It is connect with processor 12, for showing the liquid crystal display of current value.
The display content of liquid crystal display is controlled by processor 12, can such as show the current value currently measured,
The current distance and/or the first magnetic strength between first liang of axial magnetic sensor 10 of display and second liang of axial magnetic sensor 11 can be corresponded to
Answer intensity and/or the second magnetic induction intensity etc., being particularly shown content can be decided according to the actual requirements, the utility model to this not
It limits.
In order to facilitate measurement, based on the above embodiment, mode, the measuring device of line current are preferably carried out as one kind
Further include:
It is connect respectively with first liang of axial magnetic sensor 10 and second liang of axial magnetic sensor 11, is used for respectively first liang of axis magnetic
Sensor 10 and second liang of axial magnetic sensor 11 provide the DC power supply of DC voltage.
In the present embodiment, it is configured in measuring device for first liang of axial magnetic sensor 10 and second liang of axial magnetic sensor 11
Dedicated DC power supply, in the measurement of application measuring device progress line current, may not need individually is again first liang of axis
Magnetic Sensor 10 and second liang of axial magnetic sensor 11 match suitable DC power supply, are able to ascend the easy to use of this measuring device
Property.
In order to promote the accuracy of measurement result, based on the above embodiment, as a preferred embodiment, direct current
Source includes the voltage-stablizer for being in stable state for adjusting DC voltage.
In the present embodiment, special voltage-stablizer is configured for DC power supply, so that DC power supply can be first liang of axis magnetic
Sensor 10 and second liang of axial magnetic sensor 11 provide relatively stable DC voltage, it is possible to prevente effectively from because first liang of axis magnetic
The DC voltage that sensor 10 and second liang of axial magnetic sensor 11 provide is unstable and measurement result is caused the case where error occur,
So as to promote the accuracy of measurement result.
In order to further enhance user experience, based on the above embodiment, as a preferred embodiment, line current
Detection device further include:
It is connect with processor 12, is used to indicate the indicator light of the working condition of measuring device.
In the present embodiment, it is additionally arranged indicator light, is connect with processor 12, the working condition of measuring device is used to indicate,
Then user can understand the current working condition of measuring device by the light on and off of indicator light in real time, obtain better user experience.
A kind of measuring device of line current provided by the utility model is described in detail above.In specification
Each embodiment is described in a progressive manner, and it is differences from other embodiments that each embodiment, which stresses, respectively
Same and similar part may refer to each other between a embodiment.
It should be pointed out that for those skilled in the art, before not departing from the utility model principle
It puts, several improvements and modifications can be made to this utility model, these improvement and modification also fall into the utility model right
It is required that protection scope in.
It should also be noted that, in the present specification, such as first and second etc relational terms are used merely to one
A entity or operation are perhaps operated with another entity and are distinguished without necessarily requiring or implying these entities or behaviour
There are any actual relationship or orders between work.Moreover, the terms "include", "comprise" or its any variant are intended to
Cover non-exclusive inclusion, so that the process, method, article or equipment for including a series of element not only includes that
A little elements, but also other elements including being not explicitly listed either further include for this process, method, article or setting
Standby intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in the process, method, article or apparatus that includes the element.
Claims (6)
1. a kind of measuring device of line current characterized by comprising
For acquiring first liang of axis of the first magnetic induction intensity that carrying flow direct conducting wire to be measured generates on the magnetic susceptibility direction of itself
Magnetic Sensor；
For acquiring the second of the second magnetic induction intensity that the carrying flow direct conducting wire to be measured generates on the magnetic susceptibility direction of itself
Two axial magnetic sensors；
It is connect respectively with first liang of axial magnetic sensor and second liang of axial magnetic sensor, for according to first magnetic strength
Answer the opposite position of intensity, second magnetic induction intensity and first liang of axial magnetic sensor and second liang of axial magnetic sensor
Set the processor for calculating the current value of the carrying flow direct conducting wire to be measured；
When measuring the current value, the first magnetic susceptibility direction of first liang of axial magnetic sensor and second liang of axis magnetic are passed
Second magnetic susceptibility direction of conllinear and equidirectional, the described first liang of axial magnetic sensor in the first magnetic susceptibility direction of sensor and described
Second magnetic susceptibility direction of two liang of axial magnetic sensors is parallel and equidirectional, by each first magnetic susceptibility direction and each described second
The magnetic susceptibility plane that magnetic susceptibility direction is constituted is perpendicular to the carrying flow direct conducting wire to be measured.
2. the measuring device of line current according to claim 1, which is characterized in that further include:
It is connected to the processor, for measuring between first liang of axial magnetic sensor and second liang of axial magnetic sensor
The range sensor of distance.
3. the measuring device of line current according to claim 2, which is characterized in that further include:
It is connected to the processor, for showing the liquid crystal display of the current value.
4. the measuring device of line current according to claim 1-3, which is characterized in that further include:
It is connect respectively with first liang of axial magnetic sensor and second liang of axial magnetic sensor, is used for respectively described first liang
Axial magnetic sensor and second liang of axial magnetic sensor provide the DC power supply of DC voltage.
5. the measuring device of line current according to claim 4, which is characterized in that the DC power supply includes for adjusting
The whole DC voltage is in the voltage-stablizer of stable state.
6. the measuring device of line current according to claim 5, which is characterized in that further include:
It is connected to the processor, is used to indicate the indicator light of the working condition of the measuring device.
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| CN201820864906.1U CN208207050U (en) | 2018-06-05 | 2018-06-05 | Measuring device for line current |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108761171A (en) * | 2018-06-05 | 2018-11-06 | 南方电网科学研究院有限责任公司 | Line current measuring method and device |
| CN109946499A (en) * | 2019-03-13 | 2019-06-28 | 无锡乐尔科技有限公司 | PCB based current detection device |
| CN109991473A (en) * | 2019-04-18 | 2019-07-09 | 南方电网科学研究院有限责任公司 | Measuring method and measuring device for current phasor of wire and synchronous phasor measuring device |
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2018
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108761171A (en) * | 2018-06-05 | 2018-11-06 | 南方电网科学研究院有限责任公司 | Line current measuring method and device |
| CN108761171B (en) * | 2018-06-05 | 2024-04-19 | 南方电网科学研究院有限责任公司 | Line current measuring method and device |
| CN109946499A (en) * | 2019-03-13 | 2019-06-28 | 无锡乐尔科技有限公司 | PCB based current detection device |
| CN109991473A (en) * | 2019-04-18 | 2019-07-09 | 南方电网科学研究院有限责任公司 | Measuring method and measuring device for current phasor of wire and synchronous phasor measuring device |
| CN109991473B (en) * | 2019-04-18 | 2021-09-24 | 南方电网科学研究院有限责任公司 | Measuring method and measuring device for current phasor of wire and synchronous phasor measuring device |
| CN113820532A (en) * | 2021-09-23 | 2021-12-21 | 南方电网数字电网研究院有限公司 | Non-contact double-core cable current measuring method and device |
| CN113820532B (en) * | 2021-09-23 | 2022-04-15 | 南方电网数字电网研究院有限公司 | Non-contact double-core cable current measuring method and device |
| CN114487559A (en) * | 2022-04-02 | 2022-05-13 | 南方电网数字电网研究院有限公司 | Flat conductor current measuring method, flat conductor current measuring device, computer equipment and storage medium |
| CN114487559B (en) * | 2022-04-02 | 2022-07-12 | 南方电网数字电网研究院有限公司 | Flat conductor current measuring method, flat conductor current measuring device, computer equipment and storage medium |
| CN114441837A (en) * | 2022-04-06 | 2022-05-06 | 南方电网数字电网研究院有限公司 | Voltage measurement method and device based on double-shaft electric field sensing chip |
| CN114441837B (en) * | 2022-04-06 | 2022-07-12 | 南方电网数字电网研究院有限公司 | Voltage measurement method and device based on double-shaft electric field sensing chip |
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