CN207611086U - Multi-axis magnetoresistive current measurement device and system - Google Patents
Multi-axis magnetoresistive current measurement device and system Download PDFInfo
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Abstract
The utility model relates to a multi-axis reluctance current measuring device and a system, wherein, the multi-axis reluctance current measuring device comprises a main control module and a multi-axis reluctance sensor connected with the main control module; the multi-axis magnetic resistance sensor comprises a plurality of magnetic resistance sensing chips; each magnetic resistance sensing chip is connected with the main control module through a bus interface. The utility model discloses each magnetic resistance sensing chip of host system accessible bus interface connection, and then based on the magnetic field intensity of magnetic resistance sensing chip position department everywhere, directly acquire the electric current size of measuring the current-carrying wire to improve current measurement efficiency, need not consume other metal resources moreover and measure current, simple to operate, simple structure, and then reduced the preparation cost.
Description
Technical field
The utility model is related to power measurement technical fields, more particularly to a kind of multiaxis magneto-resistive current measuring apparatus and are
System.
Background technology
In the power system, in order to ensure the safe operation of electric power, it usually needs be monitored to parameters of electric power system, example
Such as monitor the current signal in electric system.And in the different application scene of electric system, the amplitude of monitoring current, frequency,
There are greatest differences for sensitivity, required precision etc..If the current amplitude of monitoring can be the leakage current of milliampere grade, can also be
The short circuit current of kilo-ampere grade, lightning current.In addition, electric system has complicated forceful electric power magnetic environment, it is easy to cause monitoring system
It seriously affects.
Traditional current measurement mainly uses current transformer to carry out current measurement to the distribution wire in electric system.In reality
During now, utility model people has found that at least there are the following problems in traditional technology：Electric current letter is usually measured in the power system
Number scene it is more complicated, traditional current measurement mainly realizes current measurement by expending a large amount of metals resources, in turn
Cause large-scale use not economical enough, manufacturing cost is higher.
Utility model content
Based on this, it is necessary to for the higher problem of manufacturing cost in traditional current measurement scheme, provide a kind of multiaxis
Magneto-resistive current measuring apparatus and system.
To achieve the goals above, on the one hand, the utility model embodiment provides a kind of multiaxis magneto-resistive current measurement and sets
It is standby, including main control module and the multiaxis magnetoresistive sensor for connecting main control module；Multiaxis magnetoresistive sensor includes that several magnetic resistance pass
Sense chip；
Each magneto-resistive transducing chip connects main control module by bus interface.
The quantity of magneto-resistive transducing chip is 2 in one of the embodiments,.
Magneto-resistive transducing chip includes 3 one-dimensional magnetic resistance sensing units in one of the embodiments,.
Main control module includes processor and communication module in one of the embodiments,；
Communication module passes through communication interface connection processing device；
Processor connects multiaxis magnetoresistive sensor by bus interface.
Further include memory, power supply in one of the embodiments,；
Memory connects main control module, multiaxis magnetoresistive sensor by bus interface；
Power supply connects main control module by power supply interface.
Power supply is wireless charging power supply or wired charging power supply in one of the embodiments,.
Bus interface is IO bus interface, CAN interface or I2C bus interface in one of the embodiments,.
Further include shell in one of the embodiments,；Main control module, multiaxis magnetoresistive sensor are located at the inside of shell.
The shape of shell is semicircular ring, plane or Irregular Boundary Surface in one of the embodiments,.
On the other hand, the utility model embodiment additionally provides a kind of multiaxis magneto-resistive current measuring system, including monitoring is put down
The multiaxis magneto-resistive current measuring apparatus of platform and above-mentioned any one；
Monitor supervision platform and the main control module of multiaxis magneto-resistive current measuring apparatus communicate to connect.
A technical solution in above-mentioned technical proposal has the following advantages that and advantageous effect：
Each magneto-resistive transducing chip of the utility model multiaxis magneto-resistive current measuring apparatus and system, multiaxis magnetoresistive sensor will
The magnetic field intensity got is transferred to main control module by bus interface；Main control module is directly acquired based on each magnetic field intensity and is waited for
Measure the current value of current carrying conductor.The utility model embodiment main control module connects each magneto-resistive transducing chip by bus interface,
And then based on the magnetic field intensity at magneto-resistive transducing chip various loci, the size of current of current carrying conductor to be measured is directly acquired, is carried
High current measurement efficiency, and other metals resources need not be expended to measure electric current, installation and deployment are convenient, simple in structure,
And then reduce manufacturing cost.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model multiaxis magneto-resistive current measuring apparatus embodiment 1；
Fig. 2 is the first concrete structure schematic diagram of the utility model multiaxis magneto-resistive current measuring apparatus embodiment；
Fig. 3 is the second concrete structure schematic diagram of the utility model multiaxis magneto-resistive current measuring apparatus embodiment；
Fig. 4 is the third concrete structure schematic diagram of the utility model multiaxis magneto-resistive current measuring apparatus embodiment；
Fig. 5 is that the magneto-resistive transducing chip of the utility model multiaxis magneto-resistive current measuring apparatus embodiment disposes schematic diagram；
Fig. 6 is the operation principle schematic diagram of the utility model multiaxis magneto-resistive current measuring apparatus embodiment；
Fig. 7 is the structural schematic diagram of the utility model multiaxis magneto-resistive current measuring system embodiment 1；
Fig. 8 is the concrete structure schematic diagram of the utility model multiaxis magneto-resistive current measuring system embodiment.
Specific implementation mode
The utility model is more fully retouched below with reference to relevant drawings for the ease of understanding the utility model,
It states.The preferred embodiment of the utility model is given in attached drawing.But the utility model can in many different forms come in fact
It is existing, however it is not limited to embodiment described herein.Make public affairs to the utility model on the contrary, purpose of providing these embodiments is
It is more thorough and comprehensive to open content.
It should be noted that when an element is considered as " connection " another element, it can be directly to separately
One element and it is in combination be integrated, or may be simultaneously present centering elements.Term as used herein " interface " and
Similar statement is for illustrative purposes only.
Unless otherwise defined, all of technologies and scientific terms used here by the article is led with the technology for belonging to the utility model
The normally understood meaning of technical staff in domain is identical.Terminology used in the description of the utility model herein only be
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term " and or " used herein includes
Any and all combinations of one or more relevant Listed Items.
One application scenarios explanation of the utility model multiaxis magneto-resistive current measuring apparatus and system：
In grid operation, it usually needs the parameters such as electric current, the voltage in power grid are measured, by monitoring the electricity in power grid
The parameters such as stream, voltage analyze power operating state in real time.With the development of power grid, the environment of electric system becomes increasingly complex,
And the installation space on transmission line of electricity, distribution line and busbar is extremely limited.Traditional current measuring method generally use is suddenly
The current transformer of that formula or electronic type carries out current measurement, but traditional Hall-type or electricity to the current carrying conductor in electric system
Type current measurement be required for constituting it is cyclic annular could measure, volume is also relatively large, it usually needs individually powers, is limited in position
Scene under be difficult to that measurement is installed, need to expend a large amount of metals resources, large-scale use is not economical enough, and manufacturing cost is higher.
And measured by multiaxis magneto-resistive current in the utility model embodiment, it can be uncertain in measurement position
Current measurement easily is carried out to current carrying conductor to be measured, being not required to dispose other ancillary equipments quickly to measure, and reduce
The manufacturing cost of current measurement.
In order to solve the problems, such as that manufacturing cost is higher in traditional current measurement scheme, it is more that the utility model improves one kind
Axis magneto-resistive current measuring apparatus embodiment 1；Fig. 1 is that the structure of the utility model multiaxis magneto-resistive current measuring apparatus embodiment 1 is shown
It is intended to.As shown in Figure 1, the multiaxis magnetoresistive sensor 130 including main control module 110 and connection main control module 110；Multiaxis magnetic resistance
Sensor 130 includes several magneto-resistive transducing chips 132；
Each magneto-resistive transducing chip 132 connects main control module 110 by bus interface 120.
Wherein, main control module 110 can be responsible for communicating with multiaxis magnetoresistive sensor 130.Optionally, main control module 110
Processing chip can be microcontroller, DSP (Digital Signal Processing：Digital Signal Processing), FPGA
(Field-Programmable Gate Array：Field programmable gate array) etc..Bus interface 120 refers to being connected to total
The connection circuit of equipment and bus on line.Preferably, each bus interface has general utility functions.Multiaxis magnetoresistive sensor 130
It refers to made of the magnetoresistance according to magnetic material, the sensor with multidimensional field strength sensing capability.Multiaxis magneto-resistive transducing
130 appreciable field strength vector of device and practical field strength direction and in the same size.Preferably, multiaxis magnetoresistive sensor 130 may include
Multiple magneto-resistive transducing chips 132, each magneto-resistive transducing chip 132 can perceive three-dimensional field strength vector.Main control module 110 can be direct
Obtain the position of each magneto-resistive transducing chip 132.
It should be noted that a certain range of magnetic of magnetic interference around current carrying conductor to be measured with respect to current carrying conductor
Field intensity can be ignored.In actual current measurement, multiaxis magnetoresistive sensor of different shapes may be selected to measure difference
The current carrying conductor to be measured of specification shape.Preferably, it can be approximately cylindric that conducting wire to be measured, which is wire shape,.
In order to better illustrate the operation principle of multiaxis magneto-resistive current measuring apparatus, in a specific example, it is special with
For the course of work for measuring electric current using the utility model multiaxis magneto-resistive current measuring apparatus：Each magneto-resistive transducing chip 132
The magnetic field intensity that will be obtained respectively is transferred to main control module 110 by bus interface 120.Main control module 110 will be according to each magnetic resistance
The position of sensing chip 132 and magnetic field intensity obtain the current value of current carrying conductor to be measured, to improve current measurement effect
Rate need not expend other metals resources to measure electric current, and then reduce the preparation for measuring current carrying conductor electric current to be measured
Cost.It should be noted that the magnetic field intensity obtained by each magneto-resistive transducing chip 132 of multiaxis magnetoresistive sensor 130 can be with
It is three-dimensional magnetic field strength vector.
In a specific example, each magneto-resistive transducing chip 132 can measure the specification of current carrying conductor to be measured according to reality,
Installation and deployment are in the corresponding position of 130 shell of multiaxis magnetoresistive sensor.
Above-mentioned each embodiment of multiaxis magneto-resistive current measuring apparatus, multiaxis magnetoresistive sensor pass through the magnetic field intensity got
Bus interface is transferred to main control module；Main control module by according to each magneto-resistive transducing chip position of multiaxis magneto-resistive current sensor and
Magnetic field intensity, so that it may which the current value for directly acquiring current carrying conductor to be measured simplifies the current value for measuring current carrying conductor to be measured
Process, and then improve current measurement efficiency, other metals resources need not be expended to measure electric current, and then reduce survey
Measure the manufacturing cost of current carrying conductor electric current to be measured.
In a specific embodiment, the quantity of magneto-resistive transducing chip is 2.
Specifically, as shown in Fig. 2, multiaxis magnetoresistive sensor 130 may include the first magneto-resistive transducing chip 132 and the second magnetic resistance
Sensing chip 134.Main control module can directly acquire the first position coordinate of the first magneto-resistive transducing chip 132 and the second magnetic resistance passes
The second position coordinate of sense chip 134.First magneto-resistive transducing chip 132, second passes magnetic resistance sense chip 134 can be according to different size
Current carrying conductor to be measured in advance be set to multiaxis magnetoresistive sensor 130 shell in, multiaxis magnetoresistive sensor 130 is deployed in and is waited for
When measuring current carrying conductor progress current measurement, the first plane of first position coordinate and current carrying conductor to be measured composition intersects at
Second plane of second position coordinate and current carrying conductor to be measured composition, i.e. the first magneto-resistive transducing chip 132, the second magneto-resistive transducing
Chip 134 and Long Straight Current-carrying conducting wire will not be in the same plane.
In a specific embodiment, magneto-resistive transducing chip includes 3 one-dimensional magnetic resistance sensing units.
Wherein, 3 one-dimensional magnetic resistance sensing units are arranged in three mutually orthogonal directions.Magneto-resistive transducing chip can
Based on existing magneto-resistance effect, i.e., huge variation can occur for sensor resistance under the action of external magnetic field.When magnetic field is zero
When, the resistance of material is maximum；When in magnetic field, forward direction or negative sense increase, the resistance of material reduces.
Specifically, 3 one-dimensional magnetic resistance sensing units can measure three orthogonal axial magnetic field intensities simultaneously, so as to direct
Get the magnetic field intensity (i.e. three-dimensional magnetic field strength vector) of three orthogonal directions of magneto-resistive transducing chip.To only need two three
The magneto-resistive transducing core of axis, so that it may in the case of sensing chip opposing leads Location-Unknown, the size of current of current carrying conductor is measured,
Influence of the locational uncertainty to measurement result is avoided, nor site of deployment is needed to calibrate, improves current measurement efficiency,
Also save cost simultaneously.
In a specific embodiment, as shown in Fig. 2, first for multiaxis magneto-resistive current measuring apparatus embodiment is specific
Structural schematic diagram, main control module include processor and communication module；
Communication module passes through communication interface connection processing device；
Processor connects multiaxis magnetoresistive sensor by bus interface.
Specifically, communication module can be communicated with host computers such as mobile phone, computers.Multiaxis magnetoresistive sensor can be by magnetic
Field strength degrees of data is transferred to processor by bus interface；Processor can give processing data to communication by communications interface transmission
The processing data received can be transferred to host computer by module, communication module.
In a specific embodiment, as shown in figure 3, second for multiaxis magneto-resistive current measuring apparatus embodiment is specific
Structural schematic diagram further includes memory, power supply；
Memory connects main control module, multiaxis magnetoresistive sensor by bus interface；
Power supply connects main control module by power supply interface.
Wherein, memory can be used for the data such as cache location coordinate and magnetic field intensity；Power supply can be wired power supply,
Can also be wireless charging, it is preferred that solar energy storage power supply can be used in power supply.
Specifically, the magnetic field strength date acquired is transferred to memory by multiaxis magnetoresistive sensor by bus interface,
Position coordinate data can also be handled data between by bus interface and be transferred to memory by main control module.
In a specific embodiment, as shown in figure 4, being the utility model multiaxis magneto-resistive current measuring apparatus embodiment
Third concrete structure schematic diagram；Multiaxis magneto-resistive current measuring apparatus may include main control module, communication module, energy-storage module, deposit
Reservoir and current sense module；
Main control module connects energy-storage module by communication interface connection communication module, by power supply interface, passes through general purpose I/O
(In/Out:Input and output) interface connection current sense module, memory；Memory connects current sense by general I/O interface
Module.
Specifically, main control module, which can have, controls the work(such as each module communication, scheduling data, data storage and data prediction
Energy.Current sense module may include that measurement data can be passed through AD by 2 magneto-resistive transducing chips, 2 magneto-resistive transducing chips
(Analog-to-Digital Convert：Modulus) it is transferred to main control module, main control module is according to the data processing function of itself
The current value of current carrying conductor to be measured can be obtained.The wireless communication card of super low-power consumption can be used in communication module, with tidal data recovering section
Point communication, by measurement result real-time Transmission to monitoring center.Power supply module passes through the modes such as solar panel or wireless charging
Energy is collected, output uses after steady pressure treatment for system, and extra electricity is turned supply energy-storage units, and energy storage section passes through
Battery storage electric energy, when solar energy module is without output or electricity shortage to system power supply.
In a specific embodiment, power supply is wireless charging power supply or wired charging power supply.
Specifically, wireless charging power supply refers to the power supply to charge by wireless charger；Wireless charging power supply can
To be solar panel, can also be can photovoltaic+battery energy storage plate.Wired charging power supply is referred to through traditional charging electricity
The power supply of source line connection charging；Wired charging power supply can be independent direct current sourc, program-controlled source；Can also be can wired charging storage
Battery.
Optionally, wireless charging power supply includes solar panel, electromagnetic induction charged power supply, electromagentic resonance charging electricity
Source, field coupling charge power supply or radio wave charge power supply.
In a specific embodiment, bus interface is IO bus interface, CAN (Controller AreaNetwork：
Controller local area network) bus interface or I2C (Inter-Integrated Circuit：Twin wire universal serial bus) bus connects
Mouthful.
Preferably, bus interface is IO bus interface.Wherein IO bus interface can be general purpose I/O bus interface.
In a specific embodiment, further include shell；Main control module, multiaxis magnetoresistive sensor are located at the interior of shell
Portion.
Wherein, main control module, multiaxis magnetoresistive sensor are located at the specific deployment way of the inside of shell, can be according to different rule
Depending on the current carrying conductor to be measured of lattice.
Specifically, the shell of multiaxis magneto-resistive transducing current measure device can be metal shell, can also be non-metal case
Body；It can also be the shell of special substance.
Optionally, the shell of multiaxis magneto-resistive transducing current measure device can be fixed, can also be detachable
's.
In a specific example, each unit module of multiaxis magneto-resistive transducing current measure device is encapsulated in shell
It is interior, when carrying out current measurement to current carrying conductor to be measured, multiaxis magneto-resistive transducing current measure device shell is pasted onto to be measured
Measure current carrying conductor surface, you can realize current measurement, to realize that the i.e. mode of patch i.e. measures, improve current measurement just
The property taken, while also saving manufacturing cost.
In a specific embodiment, the shape of shell is semicircular ring, plane or Irregular Boundary Surface.
Specifically, the shell of multiaxis magneto-resistive transducing current measure device can be according to the different size of current carrying conductor to be measured
Shell of different shapes is selected with concrete application environment.
In a specific example, as shown in figure 5, the shell of multiaxis magneto-resistive transducing current measure device is semicircular ring knot
Semicircle ring structure multiaxis magneto-resistive transducing current measure device is fixed on columned current carrying conductor to be measured by structure, by
The multiaxis magnetoresistive sensor and main control module of multiaxis magneto-resistive transducing current measure device enclosure interior administration are achieved to be measured
The current measurement of current carrying conductor has effect easy for installation, at low cost.
In a specific embodiment, as shown in figure 5, being the utility model multiaxis magneto-resistive current measuring apparatus embodiment
Magneto-resistive transducing chip dispose schematic diagram；Multiaxis magnetoresistive sensor includes 2 three axis magneto-resistive transducing chips, and 2 three axis magnetic resistance pass
Sense chip can by be arranged in circular structure (as shown in Figure 5) either in planar structure or the structure of arbitrary shape (with
It is true by calibrating before the relative coordinate position manufacture of 2 three axis magneto-resistive transducing chips subject to actual product structure and position deployment
It is fixed).If the installation of known giant magnetoresistance chip 1 (the first magneto-resistive transducing chip) and giant magnetoresistance chip 2 (the second magneto-resistive transducing chip)
Position, and only need to ensure that giant magnetoresistance chip 1 and deployment of the giant magnetoresistance chip 2 on apparatus structure meet sensing chip and be distributed in
When on the section direction of z-axis or actual installation to conductor, giant magnetoresistance chip 1, giant magnetoresistance chip 2 and Long Straight Current-carrying conducting wire will not be
(it can guarantee that P points and two normal planes of Q point magnetic vectors excessively can intersect/will not overlap respectively) on same plane.
When realizing current measurement, can be pasted by being deployed with the multiaxis magneto-resistive current measuring apparatus of three axis magneto-resistive transducing chips
On current carrying conductor surface to be measured, so that it may the size of current for easily measuring current carrying conductor to be measured, to save electricity
The cost of flow measurement substantially increases the convenience of current measurement.
In order to solve the problems, such as that manufacturing cost is higher in traditional current measurement scheme, and to better illustrate this practicality new
Type embodiment multiaxis magneto-resistive current measuring apparatus measures the size of current of current carrying conductor to be measured, lower surface analysis multiaxis magneto-resistive current
The concrete operating principle of measuring apparatus embodiment.
In a specific embodiment, as shown in fig. 6, with application the utility model multiaxis magneto-resistive current measuring apparatus into
For the process that row current value measures, illustrate the operation principle of the utility model；It should be noted that multiaxis in the utility model
Magnetoresistive sensor obtains magnetic field intensity, is that can obtain function based on the perception of the sensor or existing same type of sensor itself to realize
, main control module obtains each coordinate position of multiaxis magnetoresistive sensor, is equally based on the main control module or existing main control chip certainly
The coordinate of body obtains function and realizes, such as：
Multiaxis magnetoresistive sensor includes giant magnetoresistance chip 1 (the first magneto-resistive transducing chip) and (the second magnetic resistance of giant magnetoresistance chip 2
Sensing chip), wherein giant magnetoresistance chip 1 and giant magnetoresistance chip 2 are deployed in the position of corresponding points P and Q respectively, can directly acquire magnetic
Field intensity vectorWithWherein, s, t, h are respectively x, and the magnetic field on tri- directions y, z is strong
Degree.Main control module directly acquires the coordinate (x of P and Q points by space coordinates centered on by O points1,y1,z1) and (x2,
y2,z2), wherein P and Q is the same as on annulus centered on O points.
As shown in fig. 6, when carrying out current measurement to current carrying conductor I to be measured, giant magnetoresistance chip 1 can directly measure to obtain P
The magnetic field intensity values of point；Giant magnetoresistance chip 2 can directly measure to obtain the magnetic field intensity values of Q points.Note P points and Q points are led to current-carrying to be measured
The distance of line l is respectively d1And d2.And the magnetic field intensity of P points and Q points can be obtained by following formula (following formula are existing public affairs
Formula)：
Wherein, μ0For space permeability, value is 4 π × 10-7Tm/A。
From fig. 6 it can be seen that the magnetic field normal plane of P points and Q points intersects and coincides with current carrying conductor l to be measured.Cause
This, main control module can obtain d by existing dotted line range formula1And d2, and then can be by the magnetic field intensity of above-mentioned P points and Q points
Formula acquire current value I, i.e.,：
The utility model multiaxis magneto-resistive current measuring system embodiment 1：
Fig. 7 is the structural schematic diagram of the utility model multiaxis magneto-resistive current measuring system embodiment 1, as shown in fig. 7, multiaxis
Magneto-resistive current measuring system may include the multiaxis magneto-resistive current measuring apparatus of monitor supervision platform and above-mentioned any one；
Monitor supervision platform and the main control module of multiaxis magneto-resistive current measuring apparatus communicate to connect.
Specifically, monitor supervision platform can be mobile phone, the display terminals such as computer can also be to be made of multiple computers
Monitoring system.The current data for the current carrying conductor to be measured that main control module can obtain processing and the caching number of memory
According to monitor supervision platform is transferred to, the curent change state of current carrying conductor to be measured can be monitored in real time by monitor supervision platform, to improve
The degree of automation of current measurement.
In a specific embodiment, as shown in figure 8, being the utility model multiaxis magneto-resistive current measuring system embodiment
Concrete structure schematic diagram；Monitor supervision platform can be communicated with the communication module in multiaxis magneto-resistive current measuring apparatus；Multiaxis magnetic
The current value of current carrying conductor to be measured can be obtained in resistance current measure device；Communication module passes the current value of current carrying conductor to be measured
It is defeated by monitor supervision platform, so that monitor supervision platform can monitor the electric current state of value of current carrying conductor to be measured in real time.
Above-mentioned each embodiment of multiaxis magneto-resistive current measuring system, multiaxis magneto-resistive current measuring apparatus can measure obtain it is to be measured
The current value of current carrying conductor simplifies the process for the current value for measuring current carrying conductor to be measured, and can measure position not
Current measurement easily is carried out to current carrying conductor to be measured in the case of determination, other metals resources need not be expended to measure
Electric current, and then reduce the manufacturing cost for measuring current carrying conductor electric current to be measured.Monitor supervision platform can receive multiaxis magneto-resistive current and survey
The current data of the current carrying conductor to be measured of equipment transmission is measured, so that the real-time monitoring current data of monitor supervision platform, to improve
The convenience of current measurement and intelligence.
Each technical characteristic of embodiment described above can be combined arbitrarily, to keep description succinct, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, it is all considered to be the range of this specification record.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But therefore it can not be interpreted as the limitation to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (10)
1. a kind of multiaxis magneto-resistive current measuring apparatus, which is characterized in that including main control module and connect the main control module
Multiaxis magnetoresistive sensor；The multiaxis magnetoresistive sensor includes several magneto-resistive transducing chips；
Each magneto-resistive transducing chip connects the main control module by bus interface.
2. multiaxis magneto-resistive current measuring apparatus according to claim 1, which is characterized in that the number of the magneto-resistive transducing chip
Amount is 2.
3. multiaxis magneto-resistive current measuring apparatus according to claim 1 or 2, which is characterized in that the magneto-resistive transducing chip
Including 3 one-dimensional magnetic resistance sensing units.
4. multiaxis magneto-resistive current measuring apparatus according to claim 3, which is characterized in that the main control module includes processing
Device and communication module；
The communication module connects the processor by communication interface；
The processor connects the multiaxis magnetoresistive sensor by the bus interface.
5. multiaxis magneto-resistive current measuring apparatus according to claim 3, which is characterized in that further include memory, power supply electricity
Source；
The memory connects the main control module, the multiaxis magnetoresistive sensor by the bus interface；
The power supply connects the main control module by power supply interface.
6. multiaxis magneto-resistive current measuring apparatus according to claim 5, which is characterized in that the power supply is wireless charging
Power supply or wired charging power supply.
7. multiaxis magneto-resistive current measuring apparatus according to claim 3, which is characterized in that the bus interface is IO buses
Interface, CAN interface or I2C bus interface.
8. multiaxis magneto-resistive current measuring apparatus according to claim 7, which is characterized in that further include shell；The master control
Module, the multiaxis magnetoresistive sensor are located at the inside of the shell.
9. multiaxis magneto-resistive current measuring apparatus according to claim 8, which is characterized in that the shape of the shell is semicircle
Ring, plane or Irregular Boundary Surface.
10. a kind of multiaxis magneto-resistive current measuring system, which is characterized in that including monitor supervision platform and the claims 1 to 9
Multiaxis magneto-resistive current measuring apparatus described in any one；
The monitor supervision platform and the main control module of the multiaxis magneto-resistive current measuring apparatus communicate to connect.
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| CN110346633A (en) * | 2019-08-02 | 2019-10-18 | 武汉三相电力科技有限公司 | Magneto-electric current sensor and cable fault localization method |
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