CN109633233A - A kind of Closed Loop Hall and detection method - Google Patents

A kind of Closed Loop Hall and detection method Download PDF

Info

Publication number
CN109633233A
CN109633233A CN201811577641.8A CN201811577641A CN109633233A CN 109633233 A CN109633233 A CN 109633233A CN 201811577641 A CN201811577641 A CN 201811577641A CN 109633233 A CN109633233 A CN 109633233A
Authority
CN
China
Prior art keywords
under test
equipment under
current signal
closed loop
hall
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201811577641.8A
Other languages
Chinese (zh)
Inventor
吴建
杨靖
李健芃
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Digital Technologies Suzhou Co Ltd
Original Assignee
Huawei Digital Technologies Suzhou Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Digital Technologies Suzhou Co Ltd filed Critical Huawei Digital Technologies Suzhou Co Ltd
Priority to CN201811577641.8A priority Critical patent/CN109633233A/en
Publication of CN109633233A publication Critical patent/CN109633233A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
    • G01R15/20—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using galvano-magnetic devices, e.g. Hall-effect devices, i.e. measuring a magnetic field via the interaction between a current and a magnetic field, e.g. magneto resistive or Hall effect devices
    • G01R15/202—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using galvano-magnetic devices, e.g. Hall-effect devices, i.e. measuring a magnetic field via the interaction between a current and a magnetic field, e.g. magneto resistive or Hall effect devices using Hall-effect devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R21/00—Arrangements for measuring electric power or power factor
    • G01R21/133—Arrangements for measuring electric power or power factor by using digital technique
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
    • G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
    • G01R22/10—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods using digital techniques

Abstract

The embodiment of the present application discloses a kind of Closed Loop Hall and detection method.Closed Loop Hall includes: electromagnetic induction circuit and micro-control unit in the embodiment of the present application；Electromagnetic induction circuit, for incuding primary side magnetic field to generate Hall current signal, primary side magnetic field is the magnetic field that primary current signal generates, and primary current signal is the current signal in the test line in equipment under test；Micro-control unit, for adjusting Hall current signal using pulse width modulating technology, the current signal after being adjusted, so that secondary side magnetic field and primary side magnetic field balance, secondary side magnetic field is the magnetic field that secondary current signal generates, secondary current signal be it is adjusted after current signal handle；Micro-control unit is also used to determine primary current signal according to current signal adjusted；Micro-control unit is also used to calculate the performance parameter of equipment under test according to the voltage signal of primary current signal and equipment under test, and the performance parameter of equipment under test is sent to monitoring system.

Description

A kind of Closed Loop Hall and detection method
Technical field
The invention relates to circuit field more particularly to a kind of Closed Loop Halls and detection method.
Background technique
Hall sensor is a kind of magnetic field sensor made according to Hall effect.Using made of Hall effect it is various suddenly That element, it can be determined that the important parameters such as electric current in carrier concentration, carrier mobility and conducting wire, therefore, widely Applied to industrial automation technology, detection technique and information processing etc..
In existing direct current energy detection system, generally using monitoring system, ammeter table body and simulation hall sensing The scheme that device three combines checks the performance parameter of equipment under test.Wherein, analogue hall sensor is by equipment under test Current signal be converted to analog voltage signal, then, ammeter table body calculates equipment under test according to the analog voltage signal Current signal, then, ammeter table body calculate this according to the current signal of equipment under test and the voltage signal of equipment under test and tested set Standby performance parameter, finally, the ammeter table body are reported to the performance parameter of equipment under test in monitoring system in case other use.
In such scheme, since analogue hall sensor output is analog signal, is needed using ammeter table body Analog voltage signal is converted into digital voltage signal, in order to carry out equipment under test performance parameter calculating.But it is each A ammeter table body can only be connected with four Hall sensors, when the performance parameter for needing to detect multiple equipment under tests or need to examine When surveying the electric current in the multichannel test line in an equipment under test, the number that will lead to ammeter table body increases, and because increasing One ammeter table body needs higher cost, so electric energy detection system extension will be made not flexible, to reduce detection efficiency.
Summary of the invention
The embodiment of the present application provides a kind of Closed Loop Hall and detection method, in electric energy detection system Flexible configuration Closed Loop Hall, and then promote detection efficiency.
In a first aspect, the embodiment of the present application provides a kind of Closed Loop Hall, comprising: electromagnetic induction circuit and micro-control Unit processed；Wherein, electromagnetic induction circuit, for incuding primary side magnetic field to generate Hall current signal；In addition, the microcontroller list Member, for adjusting the Hall current signal using pulse width modulating technology, the current signal after being adjusted, so that secondary side Magnetic field and the primary side magnetic field balance；The micro-control unit is also used to determine that primary current is believed according to the current signal adjusted Number, and the performance parameter of the equipment under test is calculated according to the voltage signal of the primary current signal and equipment under test, and to monitoring System sends the performance parameter of the equipment under test.
It should be noted that the primary side magnetic field is the magnetic field that primary current signal generates, which is tested The current signal in test line in equipment；The pair side magnetic field is the magnetic field that secondary current signal generates, secondary current letter It number handles to obtain through the current signal adjusted.
In the embodiment of the present application, micro-control unit is prepared inside Closed Loop Hall, it can be according to primary current signal The performance parameter of equipment under test is calculated with the voltage signal of equipment under test, and the performance of the equipment under test is sent to monitoring system Parameter, and ammeter table body calculated performance parameter is no longer needed, ammeter table body is not needed yet to monitoring system sending performance parameter, institute With, even if when needing to carry out the detection of performance parameter to the Multi-path electricity stream in multiple equipment under tests or an equipment under test, Detection and calculating are participated in due to not needing ammeter table body, it is possible to the flexible configuration closed loop hall sensing in electric energy detection system Device, and then improve detection efficiency.
According in a first aspect, in the first embodiment of the embodiment of the present application first aspect, the Closed Loop Hall It further include low-pass filter；The micro-control unit, specifically for the Hall current signal is adjusted to arteries and veins by adjusting duty ratio Rush width modulated pwm signal；The low-pass filter, for the pwm signal to be converted to analog current signal；The closed loop Hall passes Sensor further includes totem driving circuit；The totem driving circuit obtains pair side electricity for amplifying the analog current signal Signal is flowed, so that the pair side magnetic field and the primary side magnetic field balance.
In the present embodiment, proposes in such a way that pulse width modulating technology adjusts the Hall current signal, be to pass through Adjustment duty ratio uses the pwm signal to which the Hall current signal is adjusted to pulse width modulation (PWM) signal, convenient for the later period Primary current signal is calculated, and, it is also proposed that current signal adjusted is adjusted to the mode of secondary current signal, specifically The pwm signal is converted to analog current signal using low-pass filter by ground, so that the totem driving circuit can handle The analog current signal, and the analog signal is amplified and obtains secondary current signal.Then, which generates The magnetic field that magnetic field can be generated with the primary current signal balances.In addition, can also be improved using pulse width modulating technology The detection accuracy of the Closed Loop Hall.
According to the first of first aspect or first aspect embodiment, second of the embodiment of the present application first aspect is real It applies in mode, which further includes communication interface；The communication interface, for being connect with monitoring system；The microcontroller list Member, specifically for sending the performance parameter of the equipment under test to the monitoring system by the communication interface.
In the present embodiment, which can communicate to connect with monitoring system, and send to the monitoring system The performance parameter of the equipment under test, so being conducive to the monitoring system to the property of each Closed Loop Hall equipment detected Energy parameter is analyzed, and is conducive to management of the user to equipment under test.
According to second of embodiment of first aspect, in the third embodiment of the embodiment of the present application first aspect, The micro-control unit includes detection interface；The detection interface, connect for the voltage detection terminal with the equipment under test；The microcontroller Unit is also used to obtain the voltage signal of the equipment under test by the detection interface.
In the present embodiment, the micro-control unit in the Closed Loop Hall also has detection interface, which can To obtain the voltage signal of equipment under test, therefore, the feasibility of the scheme of promotion.
According to second of embodiment of first aspect, in the 4th kind of embodiment of the embodiment of the present application first aspect, The micro-control unit is also used to obtain the voltage signal of the equipment under test from the monitoring system by the communication interface.
In the present embodiment, propose that the Closed Loop Hall can also obtain the tested of monitoring system detection from communication interface The voltage signal of equipment, therefore, the realization flexibility of the scheme of promotion.
According to second of embodiment of first aspect, in the 5th kind of embodiment of the embodiment of the present application first aspect, The communication interface includes wireless communication interface or wired communication interface；The wireless communication interface includes purple honeybee ZigBee interface or nothing Line local area network Wi-Fi interface；The wired communication interface includes RS232 interface or RS485 interface.
In the present embodiment, multiple communication interface is proposed, illustrates that the Closed Loop Hall can use a variety of communication parties Formula is communicated with the monitoring system, therefore, the realization flexibility of the scheme of promotion.In addition to this, wireless communication interface makes this Closed Loop Hall can be wirelessly connected with the monitoring system, then can be omitted the layout of the communications cable, therefore, be mentioned The convenience that the Closed Loop Hall detects the performance parameter of the equipment under test is risen.
According to the first of first aspect or first aspect embodiment, the 6th kind of reality of the embodiment of the present application first aspect Apply in mode, the performance parameter include: the current value of equipment under test, the voltage value of equipment under test, equipment under test power or by The accumulation electric energy of measurement equipment.
In the present embodiment, the performance parameter of a variety of equipment under tests is listed, then the Closed Loop Hall can be in reality Different performance parameters is sent to management system according to the actual situation in the application of border, to meet different equipment under tests and different user Demand therefore improve the realization flexibility of the program.
Second aspect, the embodiment of the present application provide a kind of detection method, comprising:
Closed Loop Hall incudes primary side magnetic field to generate Hall current signal, which is primary current signal The magnetic field of generation, the primary current signal are the current signal in the test line in equipment under test；The Closed Loop Hall The Hall current signal is adjusted using pulse width modulating technology, the current signal after being adjusted so that secondary side magnetic field with Primary side magnetic field balance, the pair side magnetic field are the magnetic field that secondary current signal generates, which is after the adjustment Current signal handle；The Closed Loop Hall determines that the primary current is believed according to the current signal adjusted Number；The Closed Loop Hall calculates the performance of the equipment under test according to the voltage signal of the primary current signal and equipment under test Parameter；The Closed Loop Hall sends the performance parameter to monitoring system.
In the embodiment of the present application, Closed Loop Hall can be according to the voltage signal of primary current signal and equipment under test The performance parameter of equipment under test is calculated, and sends the performance parameter of the equipment under test to monitoring system, and no longer needs ammeter Table body calculated performance parameter does not need ammeter table body to monitoring system sending performance parameter yet, so, even if when needing to multiple When Multi-path electricity stream in equipment under test or an equipment under test carries out the detection of performance parameter, due to not needing ammeter table body ginseng With detection and calculating, it is possible to the flexible configuration Closed Loop Hall in electric energy detection system, and then improve detection effect Rate.
According to second aspect, in the first embodiment of the embodiment of the present application second aspect, the Closed Loop Hall The Hall current signal is adjusted using pulse width modulating technology, the current signal after being adjusted so that secondary side magnetic field with Primary side magnetic field balance, comprising:
The Hall current signal is adjusted to pulse width modulation (PWM) letter by adjusting duty ratio by the Closed Loop Hall Number, and the pwm signal is adjusted to the secondary current signal, so that the pair side magnetic field and the primary side magnetic field balance.
In the present embodiment, proposes in such a way that pulse width modulating technology adjusts the Hall current signal, be to pass through Adjustment duty ratio uses the pwm signal to which the Hall current signal is adjusted to pulse width modulation (PWM) signal, convenient for the later period Primary current signal is calculated, and, it is also proposed that current signal adjusted is adjusted to the mode of secondary current signal, in It is that the magnetic field that the magnetic field that the secondary current signal generates can be generated with the primary current signal balances.In addition, using pulse Width modulation technology can also improve the detection accuracy of the Closed Loop Hall.
According to the first of second aspect or second aspect embodiment, second of the embodiment of the present application second aspect is real It applies in mode, which calculates the equipment under test according to the voltage signal of the primary current signal and equipment under test Performance parameter before, this method further include:
The voltage signal of Closed Loop Hall acquisition equipment under test.
In the present embodiment, which should also obtain tested before the performance parameter for calculating the equipment under test The voltage signal of equipment, this improves the feasibilities of scheme.
According to second of embodiment of second aspect, in the third embodiment of the embodiment of the present application second aspect, The Closed Loop Hall obtain equipment under test voltage signal include:
The Closed Loop Hall obtains the voltage signal of equipment under test by communication interface from the monitoring system；Alternatively, The Closed Loop Hall detects the voltage signal of equipment under test by detection interface；The communication interface includes wireless communication interface Or wired communication interface, the wireless communication interface include purple honeybee ZigBee interface or WLAN Wi-Fi interface, the cable modem Believe that interface includes RS232 interface or RS485 interface.
In the present embodiment, propose that the Closed Loop Hall obtains the voltage signal of equipment under test except through detection interface Except, the voltage signal for the equipment under test that monitoring system detects, therefore, the reality of the scheme of promotion can also be obtained from communication interface Existing flexibility.In addition, also proposed multiple communication interface in the present embodiment, it is a variety of to illustrate that the Closed Loop Hall can use Communication mode is communicated with the monitoring system, therefore, the realization flexibility of the scheme of promotion.In addition to this, wireless communication connects Mouth is wirelessly connected the Closed Loop Hall with the monitoring system, then can be omitted the layout of the communications cable, Therefore, the convenience that the Closed Loop Hall detects the performance parameter of the equipment under test is improved.
According to the third embodiment of second aspect, in the 4th kind of embodiment of the embodiment of the present application second aspect, The Closed Loop Hall sends the performance parameter to monitoring system
The Closed Loop Hall sends the performance parameter to monitoring system by the communication interface.
In the present embodiment, which can communicate to connect with monitoring system, and send to the monitoring system The performance parameter of the equipment under test, so being conducive to the monitoring system to the property of each Closed Loop Hall equipment detected Energy parameter is analyzed, and is conducive to management of the user to equipment under test.
According to second aspect, in the 5th kind of embodiment of the embodiment of the present application second aspect, the performance parameter include: by The current value of measurement equipment, the voltage value of equipment under test, the power of equipment under test or equipment under test accumulation electric energy.
In the present embodiment, the performance parameter of a variety of equipment under tests is listed, then the Closed Loop Hall can be in reality Different performance parameters is sent to management system according to the actual situation in the application of border, to meet different equipment under tests and different user Demand therefore improve the realization flexibility of the program.
The third aspect, the embodiment of the present application provide a kind of detection method, comprising:
Monitoring system receives the performance parameter for the equipment under test that Closed Loop Hall is sent, the performance ginseng of the equipment under test Number is calculated by the Closed Loop Hall according to the voltage signal of primary current signal and the equipment under test, the primary current Signal is the current signal in the test line in equipment under test.
According to the third aspect, in the first embodiment of the embodiment of the present application third aspect, monitoring system reception is closed Before the performance parameter for the equipment under test that ring Hall sensor is sent, this method further include:
The monitoring system detects the voltage signal of the equipment under test；
The monitoring system sends the voltage signal of the equipment under test to the Closed Loop Hall.
Fourth aspect, the embodiment of the present application provide a kind of detection system, comprising:
Monitoring system, and the Closed Loop Hall introduced such as first aspect；The monitoring system is closed for receiving this The performance parameter for the equipment under test that ring Hall sensor is sent.
5th aspect, the embodiment of the present application provides a kind of computer readable storage medium, including instruction, when it is being calculated When being run on machine, so that computer executes the method introduced such as second aspect or the third aspect.
6th aspect, the embodiment of the present application provides a kind of computer program product comprising instruction, when it is in computer When upper operation, so that computer executes the method introduced such as second aspect or the third aspect.
As can be seen from the above technical solutions, the embodiment of the present application has the advantage that
In the embodiment of the present application, micro-control unit is prepared inside Closed Loop Hall, it can be according to primary current signal The performance parameter of equipment under test is calculated with the voltage signal of equipment under test, and the performance of the equipment under test is sent to monitoring system Parameter, and ammeter table body calculated performance parameter is no longer needed, ammeter table body is not needed yet to monitoring system sending performance parameter, institute With, even if when needing to carry out the detection of performance parameter to the Multi-path electricity stream in multiple equipment under tests or an equipment under test, Detection and calculating are participated in due to not needing ammeter table body, it is possible to the flexible configuration closed loop hall sensing in electric energy detection system Device, and then improve detection efficiency.
Detailed description of the invention
Technical solution in ord to more clearly illustrate embodiments of the present application, below will be to required use in embodiment description Attached drawing be briefly described, it should be apparent that, the drawings in the following description are only some examples of the present application.
Figure 1A is an application scenarios schematic diagram of Closed Loop Hall and detection method in the embodiment of the present application；
Figure 1B is a schematic diagram of Hall effect principle in the embodiment of the present application；
Fig. 2 is one embodiment schematic diagram of Closed Loop Hall in the embodiment of the present application；
Fig. 3 A is another embodiment schematic diagram of Closed Loop Hall in the embodiment of the present application；
Fig. 3 B is another embodiment schematic diagram of Closed Loop Hall in the embodiment of the present application；
Fig. 4 is a flow chart of detection method in the embodiment of the present application；
Fig. 5 A is a schematic diagram of detection system in the embodiment of the present application；
Fig. 5 B is another schematic diagram of detection system in the embodiment of the present application；
Fig. 5 C is another schematic diagram of detection system in the embodiment of the present application；
Fig. 6 is another flow chart of detection method in the embodiment of the present application；
Fig. 7 is one embodiment schematic diagram of monitoring system in the embodiment of the present application.
Specific embodiment
The embodiment of the present application provides a kind of Closed Loop Hall and detection method, in electric energy detection system Flexible configuration Closed Loop Hall, and then promote detection efficiency.
The description and claims of this application and term " first ", " second ", " third ", " in above-mentioned attached drawing The (if present)s such as four " are to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should manage The data that solution uses in this way are interchangeable under appropriate circumstances, so as to embodiments herein described herein can in addition to Here the sequence other than those of diagram or description is implemented.In addition, term " includes " and " having " and their any deformation, Be intended to cover it is non-exclusive include, for example, containing the process, method of a series of steps or units, system, product or setting It is standby those of to be not necessarily limited to be clearly listed step or unit, but may include be not clearly listed or for these mistakes The intrinsic other step or units of journey, method, product or equipment.
Below to the invention relates to some terms be introduced:
Micro-control unit (microcontroller unit, MCU): also known as one chip microcomputer (single chip It microcomputer) or microprocessor, is the frequency central processing unit (central process unit, CPU) and rule Lattice do appropriate reduction, and by memory (memory), counter (timer), programmable logic controller (PLC) (programmable Logic controller, PLC) etc. be incorporated on chip, form the computer of chip-scale, in practical applications can be in difference Application scenarios execute various combination control.
Pulse width modulation (pulse width modulation, PWM): be using the numeral output of micro-control unit come A kind of analog control mode that analog circuit is controlled.This modulation technique can be modulated according to the variation of respective loads The biasing of transistor base or metal-oxide-semiconductor grid, the change of Lai Shixian transistor or metal-oxide-semiconductor turn-on time, to realize that switch is steady The change of voltage source output.The signal for using the pulse width modulating technology to be exported is pulse width modulation (PWM) signal.
Low-pass filter (low pass filter, LPF): referring to allows low frequency signal to pass through, and high-frequency signal is prevented to pass through Filter device.Low-pass filter in the embodiment of the present application is used to pwm signal being converted to analog current signal.
Duty ratio (duty ratio): duty ratio refers to that in a pulse cycle, conduction time is relative to total time institute The ratio accounted for.
ZigBee protocol (ZigBee): refer to the low-power consumption LAN protocol based on IEEE802.15.4 standard.By the ZigBee The ZigBee technology that agreement is supported is the wireless communication technique of a kind of short distance, low-power consumption.ZigBee in the embodiment of the present application Interface exactly uses the ZigBee wireless communication technique.
Totem driving circuit: including two kinds of triodes of NPN and PNP, the pole c (collector) of NPN meets positive supply, the c of PNP Pole (collector) ground connection.The pole b (base stage) of two triodes connects input together, and the pole e (emitter) of two triodes connects together Output, to achieve the purpose that drive the pole b of two triodes with same signal.Generally, when driving signal is high, NPN is led It is logical；When driving signal is low, PNP conducting.
Lorentz force: refer to moving charge power suffered in magnetic field, i.e. active force of the magnetic field to moving charge.
The application scenarios of the Closed Loop Hall and detection method that are proposed below to the embodiment of the present application are situated between It continues:
In the embodiment of the present application, which is mainly used in electric current or electricity in the route to equipment under test The scene that is detected is pressed, specifically, when current conditions in the route that user needs to know equipment under test or entire tested It,, can be with when the electric current in the route 102 that user needs to detect equipment under test 101 by taking Figure 1A as an example when the energy consumption condition of equipment One Closed Loop Hall 103 is installed on the route 102, and then can be using the Closed Loop Hall 103 to the quilt Measurement equipment 101 is detected the performance parameter to determine the equipment under test 101, and then, which is tested this and sets Standby 101 performance parameter is sent to monitoring system 104, to allow user according to the monitoring system 104 show, this is tested The more reasonable decision of the performance parameter of equipment 101 or the quantity and distribution mode for arranging equipment under test 101, and then reach saving It consumes energy, the effect of save the cost.
It should be noted that the Closed Loop Hall that the embodiment of the present application is proposed can be applied in multiple industries The detection of current or voltage, for example, the numerous areas such as aerospace, automotive electronics, railway power supply, industrial automation, specifically, Closed Loop Hall equipment under test detected can be the equipment individual for independently executing certain function, such as mass computing Machine, numerically-controlled machine tool etc., some of complex route being also possible in some autonomous device, such as the route group in automotive control system It closes, specifically herein without limitation.In the present embodiment and subsequent embodiment, only it is introduced by taking equipment under test as an example.
It should also be noted that the Closed Loop Hall that the embodiment of the present application is proposed can detecte DC current, it can also To detect alternating current, specifically herein without limitation.
First Hall effect principle to be introduced below convenient for the understanding to the Closed Loop Hall:
Hall effect is the theoretical basis of the Closed Loop Hall, specifically, as shown in Figure 1B, the Hall element in figure For certain thickness semiconductor, which is located in the B of magnetic field, and the direction of magnetic field B is vertical with the upper surface of the semiconductor, this Outside, bias current I is passed through in the semiconductor, the direction of bias current I it is vertical with the side of the semiconductor and with magnetic field B Direction it is vertical.The Hall effect refers to the current-carrying when the semiconductor for being connected with bias current I to be put into the B of magnetic field, in semiconductor Son will be deflected by the effect of Lorentz force, to generate potential difference V at the both ends of semiconductorH, i.e. Hull voltage VH, Also referred to as Hall voltage VH.Due to Hall voltage VHSize, with the bias current I that passes through in magnetic field strength B and semiconductor at Direct ratio, so when bias current I is constant, Hall voltage VHSize only influenced by mono- factor of magnetic field strength B, into And Hall voltage VHVariation can be with the variation of magnetic reaction fields intensity B.Since magnetic field B is in the route by equipment under test Electric current (also referred to as primary current) generate, it is possible to according to Hall voltage VHSize judge in the route of the equipment under test Electric current size.
Generally, as shown in Figure 1B, there are four leading-out terminals for a Hall element, wherein No. three terminals and No. four terminals are The input terminal of the bias current I of Hall element, No.1 terminal and No. two terminals are Hall voltage VHOutput end.Work as Hall voltage Two output ends when constituting external loop, Hall current will be generated in circuit.In practical applications, which can be by Reference voltage source provides, and can also be provided by constant-current source, specifically herein without limitation.In the present embodiment and subsequent embodiment In, only it is introduced so that the bias current is provided by constant-current source as an example.
The realization principle of Closed Loop Hall 20 is forgoing described, the closed loop that will be proposed below to the embodiment of the present application The structure of Hall sensor 20 is introduced, as shown in Fig. 2, the Closed Loop Hall 20 includes 201 He of electromagnetic induction circuit Micro-control unit 202, the microcontroller list 202 are connected with the electromagnetic induction circuit 201 respectively.
The electromagnetic induction circuit 201, for incuding primary side magnetic field to generate Hall current signal, wherein the primary side magnetic field For the magnetic field that primary current signal generates, which is the current signal in the test line in equipment under test.
The micro-control unit 202, for adjusting the Hall current signal using pulse width modulating technology, after being adjusted Current signal so that secondary side magnetic field and the primary side magnetic field balance, wherein the pair side magnetic field is the generation of secondary current signal Magnetic field, the secondary current signal handle to obtain through the current signal adjusted.
In the present embodiment, when the magnetic field in magnetic field and primary current signal generation that the secondary current signal generates balances it Afterwards, once the primary current signal changes, the state of magnetic field balance will be broken, at this point, the electromagnetic induction circuit will Hall current signal is sent to the micro-control unit, the variation tendency of the Hall current signal can reflect the change of the primary current Change trend, then, the micro-control unit 202 will receive the Hall current signal of the variation, and carry out to the Hall current signal Pulse width modulation generates so that exporting the primary current signal that the magnetic field that new secondary current signal generates has changed with this New magnetic field balance, recycled with this, which will be in the state of a dynamic equilibrium.
In addition to this, the micro-control unit 202, is also used to calculate the performance parameter of the equipment under test, when the microcontroller list After the performance parameter of the equipment under test has been calculated in member 202, which is also used to send the quilt to monitoring system The performance parameter of measurement equipment.
In the embodiment of the present application, micro-control unit is prepared inside Closed Loop Hall, it can be according to primary current signal The performance parameter of equipment under test is calculated with the voltage signal of equipment under test, and the performance of the equipment under test is sent to monitoring system Parameter, and ammeter table body calculated performance parameter is no longer needed, ammeter table body is not needed yet to monitoring system sending performance parameter, institute With, even if when needing to carry out the detection of performance parameter to the Multi-path electricity stream in multiple equipment under tests or an equipment under test, Detection and calculating are participated in due to not needing ammeter table body, it is possible to the flexible configuration closed loop hall sensing in electric energy detection system Device, and then improve detection efficiency.
For convenient for further understanding, below by the specific knot of the Closed Loop Hall 30 proposed to the embodiment of the present application Structure is introduced, and as shown in Figure 3A, which includes: electromagnetic induction circuit 301, micro-control unit 302, figure Rise column driving circuit 303 and low-pass filter 304, wherein the micro-control unit 302 respectively with the electromagnetic induction circuit 301 and Low-pass filter 304 connects, which is connected with the totem driving circuit 303, the totem driving circuit 303 are connected with the electromagnetic induction circuit 301.
In the present embodiment, which includes: magnetism gathering rings 3011, secondary side bucking coil 3012, Hall element 3014 and operational amplifier 3015.Specifically, magnetism gathering rings 3011, for generating magnetic field at the gap of magnetism gathering rings.The pair Side bucking coil 3012, the circumferentially wound conducting wire by multiturn in magnetism gathering rings 3011 form, for working as the pair side bucking coil Magnetic field is generated when leading to upper secondary current in 3012.The Hall element 3014, in the gap of magnetism gathering rings 3011, when is produced from the gap The raw magnetic field vertical with the upper surface of the Hall element 3014, and the side of the Hall element 3014 passes to when controlling electric current, Hall voltage can be generated on the direction vertical with magnetic direction and control sense of current simultaneously.Two when the Hall voltage are defeated When outlet constitutes external loop, Hall current will be generated in circuit.
It should be understood that the magnetism gathering rings 3011 in the present embodiment can be circular rings as shown in Figure 3A, it is also possible to Square loop can also be diamond shape ring, specifically herein without limitation.It is only poly- with this in the present embodiment and subsequent embodiment Magnet ring 3011 be circular rings for be introduced.But no matter which kind of shape the magnetism gathering rings 3011 are, should all make secondary side compensating line Circle 3012 is evenly and symmetrically distributed on the magnetism gathering rings 3011, in order to avoid lead to that the magnetic field strength at different location is different and drops The measurement accuracy of low Closed Loop Hall.
Generally, Hall voltage changes with the variation of magnetic field strength, and magnetic field is stronger, and Hall voltage is higher, and magnetic field is weaker, Hall voltage is lower.But Hall voltage value very little, usually only several millivolts, outside two output ends of Hall voltage are constituted It is also very faint that Hall current signal is generated when circuit, in circuit, so, in some possible embodiments, the electromagnetism sense Answering circuit 301 further includes operational amplifier 3015, for amplifying the Hall current signal of the Hall element 3014 output, so that The Hall current signal can enhance when being input to micro-control unit 302.
In the present embodiment, the micro-control unit 302, for the Hall current signal to be adjusted to arteries and veins by adjusting duty ratio Rush width modulated pwm signal.It should be understood that the pulse width modulating technology is that a kind of pair of analog signal carries out digital coding Technology, refer to the numeral output of micro-control unit and analog circuit controlled, control analog circuit in a digital manner, can The cost and power consumption of system is greatly lowered.In practical applications, which is digital form, institute in transmission process With using after the pulse width modulating technology, the Closed Loop Hall 30 without carry out digital-to-analogue (analogto digital, A/D it) converts.In addition, the transmission mode of digital form can also reduce the influence of noise, relative to the mode of simulation, pwm signal With higher noise margin, so as to effectively extend communication distance.
Specifically, which may include PWM controller, when the micro-control unit 302 is to the Hall current When signal carries out pulse width modulation, the micro-control unit 302 is by the connection according to determined by the period being arranged in PWM controller Time starts timer, and enables the PWM controller at the corresponding moment in period, to realize the pulse to the Hall current signal Width modulated.Then, the pulse signal of change in duty cycle the variation of primary current signal can be converted to by PWM controller It is transmitted.It is transmitted further, since analog current signal can be modulated into digital current signal by PWM conversion circuit, it can be straight Pick and handled into digital display circuit, meanwhile, pwm signal after low-pass filtering can with reduction and simulation current signal, so, PWM controller can be used as A/D in sensor measuring system and D/A converter uses, and be suitable for high and low to conversion accuracy demand The application of cost and strong antijamming capability.
In the present embodiment, the low-pass filter 304, for pulse width modulation (PWM) signal to be converted to analog current letter Number, it has been described in detail before concrete principle, specific details are not described herein again.
In addition to this, the low-pass filter 304, is also used to remove the radio-frequency component in pwm signal, because Hall current is believed Number may be mixed into radio-frequency component when carrying out pulse width modulation, therefore, it is necessary to using low-pass filter 304 remove high frequency at Point, so that the secondary current signal obtained is free of radio-frequency component.The active low pass of anti-phase input can be used in practical applications Filter, the anti-phase input active low-pass filter are connected to the inverting input terminal structure of operational amplifier by passive RC filter network At, have many advantages, such as voltage amplification factor be greater than 1, output impedance be approximately zero, it is small in size.In addition to this, which passes Sensor 30 can also use the low-pass filter of other forms, specifically herein without limitation.It should be understood, however, that this reality The single-order filter that the low-pass filter 304 in example can be made of a filter circuit is applied, is also possible to and multiple filtered electricals The multi-stage filter of road composition, specifically herein without limitation.
Secondary current signal after low-pass filtered device 304 is processed will enter totem driving circuit 303, the totem Driving circuit 303 obtains the secondary current signal for amplifying the analog current signal, so that promoting the secondary current signal Driving capability.Since the Hall current signal that Hall effect generates under normal conditions is fainter, by modulated secondary side Current signal is also fainter, so need to configure totem driving circuit to promote the driving capability of the secondary current signal, And then magnetic field caused by the secondary current is set to be enough to cancel out each other with magnetic field caused by primary current and then to reach magnetic field flat The state of weighing apparatus.
It should be understood that totem driving circuit 303 mentioned by the present embodiment and subsequent embodiment is not only The circuit form of totem driving circuit 303 shown in Fig. 3 A or Fig. 3 B can also be other with the same function etc. Driving circuit is imitated, since the circuit of same function can be there are many equivalent variant, specifically herein without limitation, also no longer It repeats.
It should be understood that secondary current signal after totem driving circuit 303 is processed will along conducting wire again into Enter secondary side bucking coil 3012, and generate new magnetic field, the new magnetic field is by the side with magnetic field caused by primary current signal It is identical to opposite size, and then two magnetic fields can cancel out each other in the gap of the magnetism gathering rings 3011.But in practical application In, the electric current in route in equipment under test is not invariable, that is to say, that the Closed Loop Hall 30 is detected Primary current signal be not invariable.When the primary current signal changes, magnetic field balance is broken and makes New magnetic field is generated in the gap of the magnetism gathering rings 3011, then, which will generate Hall according to Hall effect Electric current and by operational amplifier 3015 amplify after, into micro-control unit 302 carry out pulse width modulate to obtain pwm signal, Then, enter totem driving circuit 303 after then being handled by low-pass filter 304, most enhance afterwards through totem driving circuit 303 Secondary current signal after driving capability will be again introduced into secondary side bucking coil 3012 and realize magnetic field and balance.So circulation, just The dynamic equilibrium in magnetic field is realized, then, which can detect the change of the primary current signal in real time Change situation, i.e. current conditions in route in equipment under test.
It will also be appreciated that the Closed Loop Hall 30 does not only need to detect that the situation of change of the primary current signal, Should also processing statistics be carried out to the primary current signal of these variations.Then, available this of the micro-control unit 302, which is tested, sets The voltage signal of standby current signal and the equipment under test, and according to the electricity of the current signal of the equipment under test and the equipment under test Pressure signal calculates the performance parameter of the equipment under test.Wherein, the current signal of the equipment under test, that is, primary current signal, It can be calculated according to the pwm signal of Hall effect principle and outflow micro-control unit 302.Specifically, the micro-control unit 302 can be calculated by the following formula:
I0=φ × (VMCU×D/R0)
Wherein, I0For primary current；φ is turns ratio, also, φ=N2/N1, N2For secondary coil the number of turns, N1For primary side Coil turn；VMCUFor the supply voltage of micro-control unit；D is the duty ratio of pwm signal；R0For secondary loop resistance.
It should be noted that in the present embodiment, in the current signal using Closed Loop Hall detection equipment under test When, it is to penetrate the conducting wire for the current signal for carrying the equipment under test in the hole of the magnetism gathering rings 3011, it in practical applications, can be with In such a way that the conducting wire single penetrates in the Closed Loop Hall, primary coil the number of turns N at this time1=1；This can also be led Line is repeatedly wound in the Closed Loop Hall, such as winding n times, at this point, primary coil the number of turns N2=n, wherein n is big In 1 integer.It should be noted that primary coil the number of turns in the present embodiment is specifically without limitation, the present embodiment and after In continuous embodiment, only with primary coil the number of turns N1It is introduced for=1.
In addition, secondary loop resistance R0Value can by calibrate detection obtain, specifically, a fixation can be given Primary current signal give the Closed Loop Hall, turns ratio is it is known that micro-control unit can detecte VMCUAnd D, so Secondary loop resistance R can be calculated according to above-mentioned formula0Value.Since Closed Loop Hall is after the design is completed, interior Portion's route can determine it is constant, so even if primary current signal changes, secondary loop resistance R0Value be not Become.
It should be understood that in above-mentioned formula, turns ratio φ and secondary loop resistance R0It is known, the micro-control The supply voltage V of unit processedMCUDuty ratio D with the pwm signal can be by 302 real-time monitoring of micro-control unit, so can To calculate primary current I using above-mentioned formula0, i.e. the electric current I of the equipment under test0。
In addition to this, which should also obtain the voltage signal of the equipment under test, because of the micro-control unit The difference of interface on 302 and difference, can specifically be divided into following several situations:
One, the micro-control unit 302 has communication interface without detection interface:
In the present embodiment, which includes communication interface 3021, which is used for and monitoring system System connection；The micro-control unit 302 is also used to obtain the electricity of the equipment under test from the monitoring system by the communication interface 3021 Signal is pressed, and the voltage signal of the equipment under test is scaled to determining voltage value.In the present embodiment, which includes nothing Line communication interface or wired communication interface.When the communication interface 3021 is wireless communication interface, which can be with It is purple honeybee ZigBee interface, is also possible to Wi-Fi interface, can also be other wireless communication interfaces with similar functions, has Body is herein without limitation.In the present embodiment and subsequent embodiment, only by taking the wireless communication interface is ZigBee interface as an example It is introduced.
It should be understood that purple honeybee ZigBee interface refers to the interface based on ZigBee wireless communication technique, the ZigBee Wireless communication technique is for a series of communication protocol standards of low data rate, short-distance radio network communication definitions.It should ZigBee wireless communication technique is mainly in using battery as the small device of power supply, it is possible to be suitable for the embodiment of the present application The Closed Loop Hall 30 proposed.When the Closed Loop Hall 30 uses the ZigBee wireless communication technique, the closed loop Hall sensor 30 can be battery powered, and can be advanced into low-power consumption mode certainly.It is wireless about more specific ZigBee Specifically details are not described herein again for the communication technology and Wi-Fi wireless communication technique.
In addition, the communication interface 3021 can be RS232 interface when the communication interface 3021 is wired communication interface, It can also be RS485 interface, specifically herein without limitation.In practical applications, the RS232 interface often connect with instrumentation tap from And point-to-point communication is carried out, and the RS485 interface is usually used in realizing network savvy, it is specific that details are not described herein again.
It should be noted that the micro-control unit 302 can obtain tested set by communication interface 3021 in the present embodiment Then the voltage signal of the equipment under test is converted to the voltage value of equipment under test by standby voltage signal；Can also directly it pass through Communication interface 3021 obtains the voltage value of equipment under test, and the voltage value of the equipment under test is to detect to obtain by the monitoring system at this time The voltage value that is converted to of voltage signal.In the present embodiment, the voltage signal of the equipment under test is examined by the monitoring system It surveys, specific detection mode is without limitation.
Two, the existing detection interface of micro-control unit 302, and have communication interface:
In the present embodiment, which includes detection interface 3022, which is used for tested with this The voltage detection terminal of equipment connects；The micro-control unit 302 is also used to obtain the equipment under test by the detection interface 3022 Voltage signal.Specifically, which is connected with the positive and negative anodes of equipment under test voltage detection terminal, the micro-control unit 302 can be by the voltage of the positive and negative end of 3022 real-time detection of the detection interface equipment under test voltage detection terminal, with true Determine the voltage signal of equipment under test.
In some possible embodiments, which can be somebody's turn to do what is obtained by the detection interface 3022 The voltage signal of equipment under test is converted to the voltage value of equipment under test, and is stored in the micro-control unit 302, makes in case subsequent With.
In the present embodiment, which includes wireless communication interface or wired communication interface, wherein the wireless communication connects Mouth includes purple honeybee ZigBee interface or Wi-Fi interface, which includes RS232 interface or RS485 interface.Due to preceding Text has been described in detail, and specific details are not described herein again.
When the micro-control unit 302 determined equipment under test voltage signal and equipment under test current signal after, should Micro-control unit 302 can calculate the performance parameter of the equipment under test, can specifically calculate quilt according to the demand of user The current value of measurement equipment, the voltage value of equipment under test, the power of equipment under test and equipment under test accumulation electric energy.Wherein, should The power of equipment under test is the product of the current value of the equipment under test and the voltage value of the equipment under test, which is the quilt The integral of the power of measurement equipment in time, details are not described herein again for specific calculating process.
After the performance parameter of the equipment under test has been calculated in the micro-control unit 302, which is also used In the performance parameter for sending the equipment under test to monitoring system by communication interface 3021 explained before, so that the monitoring System can energy consumption condition to the equipment under test it is for statistical analysis, be more reasonably configure the equipment under test quantity and Distribution mode makes reference basis.
In the present embodiment, micro-control unit is prepared inside Closed Loop Hall, the micro-control unit is available tested The current signal of equipment and the voltage signal of equipment under test, then according to the current signal of the equipment under test and the equipment under test Voltage signal calculates the performance parameter of equipment under test, and no longer needs ammeter table body, so, even if when needing to set multiple be tested It is standby when carrying out electric energy detection or needing to detect the electric current in the multichannel test line in equipment under test, due to should not ammeter table body It participates in detection and calculates, it is possible to the flexible configuration Closed Loop Hall in electric energy detection system, and then improve detection Efficiency.
In addition to embodiment explained before, in some possible embodiments, which may be used also To present as follows, referring specifically to Fig. 3 B.The Closed Loop Hall 30 includes: electromagnetic induction circuit 301, microcontroller Unit 302 and totem driving circuit 303, wherein the micro-control unit 302 respectively with the electromagnetic induction circuit 301 and the figure It rises column driving circuit 303 to be connected, which is connected with the electromagnetic induction circuit 301.
In the present embodiment, which includes magnetism gathering rings 3011, secondary side bucking coil 3012, Hall element 3014 and operational amplifier 3015.Specifically, it has been explained in detail above, details are not described herein again.
In the present embodiment, the micro-control unit 302, for the Hall current signal to be adjusted to arteries and veins by adjusting duty ratio Rush width modulated pwm signal.It should be understood that the pulse width modulating technology is that a kind of pair of analog signal carries out digital coding Technology, refer to the numeral output of micro-control unit and analog circuit controlled, control analog circuit in a digital manner, can The cost and power consumption of system is greatly lowered.Specifically, which includes PWM controller, when the microcontroller list When 302 pairs of Hall current signals of member carry out pulse width modulation, which will be arranged according in PWM controller Period determined by turn-on time start timer, and the PWM controller is enabled at the corresponding moment in period, to realize to this The pulse width of Hall current signal is modulated.
In the present embodiment, which includes low-pass filter 3023, which is used for should Pwm signal is converted to analog current signal.In addition to this, the low-pass filter 3023, is also used to remove the high frequency in pwm signal Ingredient, due to being described in detail above, specific details are not described herein again.
It should be noted that the low-pass filter 3023 can be hardware circuit, it is also possible to be controlled by micro-control unit 302 The software program of system, specifically herein without limitation.When the low-pass filter 3023 be integrated in it is hard on the micro-control unit 302 When part circuit, which can be anti-phase input active low-pass filter, the anti-phase input active low-pass filter Device is made of the inverting input terminal that passive RC filter network is connected to operational amplifier, and there is voltage amplification factor to be greater than 1, output resistance Anti- the advantages that being approximately zero, is small in size.In addition to this, which can also use the low pass filtered of other forms Wave device, specifically herein without limitation.It should be understood, however, that the low-pass filter 304 in the present embodiment can be filtered by one Wave circuit composition single-order filter, be also possible to again multiple filter circuits form multi-stage filter, do not limit herein specifically It is fixed.
Secondary current signal after low-pass filtered device 3023 is processed will enter totem driving circuit 303, the totem Column driving circuit 303, for promoting the driving capability of the secondary current signal.Since Hall effect generates under normal conditions Hall current signal is fainter, also fainter by modulated secondary current signal, so needing to configure totem drive Dynamic circuit obtains secondary current signal to amplify analog current signal, so that the driving capability of the secondary current signal is promoted, It has specifically been described in detail above, details are not described herein again.
It will also be appreciated that it is tested that the micro-control unit 302 in the Closed Loop Hall 30 calculates this in the present embodiment The mode of the performance parameter of equipment with it is similar above, it is specific that details are not described herein again.
After the performance parameter of the equipment under test has been calculated in the micro-control unit 302, which is also used In the performance parameter for sending the equipment under test to monitoring system by communication interface 3021 explained before.So that the monitoring System can energy consumption condition to the equipment under test it is for statistical analysis, be more reasonably configure the equipment under test quantity and Distribution mode makes reference basis.
In the present embodiment, micro-control unit is prepared inside Closed Loop Hall, the micro-control unit is available tested The current signal of equipment and the voltage signal of equipment under test, then according to the current signal of the equipment under test and the equipment under test Voltage signal calculates the performance parameter of equipment under test, and no longer needs ammeter table body, so, even if when needing to set multiple be tested When for carrying out electric energy detection or need to detect the electric current in the multichannel test line in equipment under test, due to not needing ammeter table Body participates in detection and calculates, it is possible to the flexible configuration Closed Loop Hall in electric energy detection system, and then improve inspection Survey efficiency.
The Closed Loop Hall in the embodiment of the present application is described above, below to the inspection of the embodiment of the present application Survey method is introduced, and referring specifically to Fig. 4, Closed Loop Hall can execute following steps in the detection method:
401, Closed Loop Hall incudes primary side magnetic field to generate Hall current signal, which is primary current The magnetic field that signal generates, the primary current signal are the current signal in the test line in equipment under test；
In the present embodiment, when user is intended to know the energy consumption condition of a certain equipment, it can be mentioned using the embodiment of the present application Closed Loop Hall out detects some or all of route of the equipment under test.For example, user can be by the quilt Route in measurement equipment penetrates the Closed Loop Hall, that is, the route in the equipment under test is penetrated the magnetism gathering rings 3011 In.When having electric current to pass through in the route, which is also referred to as primary current I0Magnetic field will be generated around the route, the magnetic field Intensity and the size of the electric current in the route be positively correlated.At this point, Closed Loop Hall will incude original according to Hall effect Magnetic field caused by the current signal of side is to generate Hall current signal, specifically, the Hall element in the Closed Loop Hall Magnetic field caused by 3014 induction primary current signals is to generate Hall current signal.In some possible embodiments, should The Hall current signal that Hall element 3014 in Hall sensor exports will also pass through operational amplifier 3015, so that this is suddenly Your current signal can enhance when being input to micro-control unit 302.
It should be noted that, when disposing the Closed Loop Hall, installation site should be made not have nearby in the present embodiment High-intensity magnetic field interference, for example, the source of high-intensity magnetic field interference may be other high-power transformers, it is also possible to which others are connected with greatly The conductor of electric current, it is also possible to which other can generate the device compared with high-intensity magnetic field, specifically herein without limitation.
It should, furthermore, be noted that the primary current should be at the geometric center of the magnetism gathering rings 3011.Carry the primary side The route of electric current should be full of the through-hole of the Closed Loop Hall as far as possible.
402, the Closed Loop Hall adjusts the Hall current signal using pulse width modulating technology, after being adjusted Current signal so that secondary side magnetic field and the primary side magnetic field balance, which is the magnetic field of secondary current signal generation, The secondary current signal handles to obtain through the current signal adjusted；
In the present embodiment, when the micro-control unit 302 in the Closed Loop Hall receives the Hall current signal, The micro-control unit 302 will adjust the Hall current signal, specifically, the micro-control unit using pulse width modulating technology The Hall current signal is adjusted to pulse width modulation (PWM) signal by adjusting duty ratio by 302, and the pwm signal is adjusted For the secondary current signal, so that the magnetic field that magnetic field and the primary current signal that the secondary current signal generates generate is flat Weighing apparatus.Since the situation of change of the pwm signal can reflect the situation of change of the primary current, so the Closed Loop Hall will The situation of change of the pwm signal is stored in the micro-control unit 302, in case subsequent use.
403, the Closed Loop Hall calculates this according to the voltage signal of the primary current signal and equipment under test and is tested The performance parameter of equipment；
In the present embodiment, to calculate the performance parameter of the equipment under test, which should first determine the quilt The primary current signal and secondary current signal of measurement equipment, then carry out the calculating of the performance parameter of the equipment under test again.
Specifically, which can calculate the primary current signal according to the pwm signal.Specifically, the closed loop Micro-control unit 302 in Hall sensor can be calculated by the following formula:
I0=φ × (VMCU×D/R0)
Wherein, I0For primary current；φ is turns ratio, also, φ=N2/N1, N2For secondary coil the number of turns, N1For primary side Coil turn；VMCUFor the supply voltage of micro-control unit；D is the duty ratio of pwm signal；R0For secondary loop resistance.Due to preceding Text has been explained in detail, and specific details are not described herein again.
In the present embodiment, which can determine the voltage signal of the equipment under test in the following way, below It is introduced respectively:
(1) Closed Loop Hall obtains the voltage signal of equipment under test by communication interface from the monitoring system；
In the present embodiment, as shown in Figure 5A, when the micro-control unit in the Closed Loop Hall without detection interface and has When communication interface, which can be believed by communication interface from the voltage that the monitoring system obtains equipment under test Number.In the present embodiment, which includes wireless communication interface or wired communication interface.
When the communication interface 3021 is wireless communication interface, as shown in Figure 5 B, which can be purple honeybee ZigBee interface, is also possible to Wi-Fi interface, can also be other wireless communication interfaces with similar functions, specifically herein Without limitation.In the present embodiment and subsequent embodiment, only it is situated between so that the wireless communication interface is ZigBee interface as an example It continues.When the communication interface 3021 is wired communication interface, as shown in Figure 5A, which can be RS232 interface, It can also be RS485 interface, specifically herein without limitation.In practical applications, the RS232 interface often connect with instrumentation tap from And point-to-point communication is carried out, and the RS485 interface is usually used in realizing network savvy, it is specific that details are not described herein again.At this point, if having Multiple Closed Loop Halls, then multiple Closed Loop Hall can be attached using cascade mode.
In the present embodiment, the voltage signal of the equipment under test is detected by the monitoring system, specific detection side Formula is without limitation.
(2) Closed Loop Hall detects the voltage signal of equipment under test by detection interface；
In the present embodiment, as shown in Figure 5 C, when the existing detection interface of micro-control unit in the Closed Loop Hall, again When having communication interface, which can detect the voltage signal of equipment under test by detection interface.
In the present embodiment, the positive and negative anodes of the detection interface 3022 and equipment under test voltage detection terminal of the Closed Loop Hall It is connected, then, which can pass through 3022 real-time detection of the detection interface equipment under test voltage detection terminal Positive and negative end voltage, to determine the voltage signal of equipment under test.
Certainly, voltage letter of the Closed Loop Hall in addition to the equipment under test can be detected from the detection interface 3022 Number, the voltage signal of equipment under test can also be obtained from the monitoring system by communication interface, specifically herein without limitation.
It should be noted that the Closed Loop Hall determines the current signal of equipment under test and determines the electricity of equipment under test Sequencing does not limit the step of pressing signal, that is to say, that the Closed Loop Hall can first determine the electricity for changing equipment under test Signal is flowed, then determines the voltage signal of the equipment under test；It can also first determine the voltage signal for changing equipment under test, then determine the quilt The current signal of measurement equipment, specifically herein without limitation.
In the present embodiment, the voltage signal of equipment under test and the electric current of equipment under test have been determined when the Closed Loop Hall After signal, which can be calculated the performance parameter of the equipment under test, specifically can be according to user Demand calculate the current value of equipment under test, the voltage value of equipment under test, the power of equipment under test and the accumulation of equipment under test Electric energy.Wherein, the power of the equipment under test is the product of the current value of the equipment under test and the voltage value of the equipment under test, this is tired Product electric energy is the integral of the power of the equipment under test in time, and details are not described herein again for specific calculating process.
404, the Closed Loop Hall sends the performance parameter to monitoring system.
In the present embodiment, after the performance parameter of the equipment under test has been calculated in the Closed Loop Hall, the closed loop is suddenly Your sensor can send the performance parameter of the equipment under test by communication interface 3021 explained before to monitoring system, with Allow the monitoring system for statistical analysis to the energy consumption condition of the equipment under test, tested is set more reasonably to configure this Standby quantity and distribution mode makes reference basis.
In the present embodiment, the current signal of the available equipment under test of Closed Loop Hall and the voltage letter of equipment under test Number, the performance parameter of equipment under test is then calculated according to the voltage signal of the current signal of the equipment under test and the equipment under test, And ammeter table body is no longer needed, so, even if when needing to carry out multiple equipment under tests electric energy detection or needing to detect tested When electric current in the multichannel test line in equipment, participates in detection due to not needing ammeter table body and calculate, it is possible in electricity Flexible configuration Closed Loop Hall in energy detection system, and then improve detection efficiency.
Operation performed by the Closed Loop Hall in detection method in the embodiment of the present application is described above, Operation performed by monitoring system in the embodiment of the present application is introduced below, referring specifically to Fig. 6, the detection method Middle monitoring system can execute following steps:
601, the monitoring system detects the voltage signal of the equipment under test；
Generally, which has the ability for the voltage signal for detecting the equipment under test, so, which can With the voltage signal of the real-time detection equipment under test, and the voltage signal of the equipment under test is stored in the monitoring system, with Standby subsequent use.
602, the monitoring system sends the voltage signal of the equipment under test to the Closed Loop Hall；
In the present embodiment, the voltage signal for the equipment under test which can will test is sent to positioned at the quilt The Closed Loop Hall on route in measurement equipment, so that the Closed Loop Hall carries out the performance parameter of equipment under test It calculates.
603, monitoring system receives the performance parameter for the equipment under test that Closed Loop Hall is sent, the property of the equipment under test Energy parameter is calculated by the Closed Loop Hall according to the voltage signal of primary current signal and the equipment under test, the primary side Current signal is the current signal in the test line in equipment under test.
In the present embodiment, after the performance parameter of the equipment under test has been calculated in the Closed Loop Hall, the monitoring system System can receive Closed Loop Hall transmission equipment under test performance parameter, the performance parameter of the equipment under test can be by The current value of measurement equipment, the voltage value of equipment under test, the power of equipment under test or equipment under test accumulation electric energy, specifically herein Without limitation.Then, the monitoring system can energy consumption condition to the equipment under test it is for statistical analysis, more reasonably to match The quantity and distribution mode for setting the equipment under test make reference basis.
In the present embodiment, monitoring system can directly obtain the performance ginseng of the equipment under test from Closed Loop Hall Number, and do not have to the performance parameter that the equipment under test is obtained from ammeter table body, and ammeter table body is no longer needed, so, even if working as When needing to carry out multiple equipment under tests electric energy detection or needing to detect the electric current in the multichannel test line in equipment under test, Detection and calculating are participated in due to not needing ammeter table body, it is possible to the flexible configuration closed loop hall sensing in electric energy detection system Device, and then improve detection efficiency.
Method performed by monitoring system in the present embodiment is described above, below to the monitoring in the present embodiment System 70 is introduced:
It should be understood that the monitoring system in the present embodiment can be the server that separate unit has monitoring management function, It is also possible to the server cluster with monitoring management function, specifically herein without limitation.As shown in fig. 7, being that the present embodiment mentions 70 structural schematic diagram of a kind of monitoring system supplied, the monitoring system 70 can generate bigger difference because configuration or performance are different It is different, it may include one or more processors (central processing units, CPU) 701 and memory 702, (such as one or more mass memories are set the storage medium 703 of one or more storage application programs or data It is standby).Wherein, memory 702 and storage medium 703 can be of short duration storage or persistent storage.Further, processor 701 It can be set to communicate with storage medium 703, processor 701 is used to execute the application program in storage medium 703, specifically:
Processor 701, for detecting the voltage signal of the equipment under test.
The monitoring system 70 further includes input-output apparatus 705, specifically:
The input-output apparatus 705, the voltage for sending the equipment under test to the Closed Loop Hall are believed Number；
The input-output apparatus 705 is also used to receive the performance parameter of the equipment under test of Closed Loop Hall transmission, The performance parameter of the equipment under test is by the Closed Loop Hall according to the electricity of primary current signal and the equipment under test Pressure signal is calculated, and the primary current signal is the current signal in the test line in equipment under test.
It should be understood that the monitoring system 70 can also include one or more power supplys 704, one or more are defeated Enter/output equipment 705, and/or, one or more operating systems, such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM etc..
It should also be understood that step performed by the monitoring system can be based in embodiment of the method corresponding to above-mentioned Fig. 6 The monitoring system 70 shown in Fig. 7.
In the present embodiment, monitoring system can directly obtain the performance ginseng of the equipment under test from Closed Loop Hall Number, and do not have to the performance parameter that the equipment under test is obtained from ammeter table body, and ammeter table body is no longer needed, so, even if working as When needing to carry out multiple equipment under tests electric energy detection or needing to detect the electric current in the multichannel test line in equipment under test, Detection and calculating are participated in due to not needing ammeter table body, it is possible to the flexible configuration closed loop hall sensing in electric energy detection system Device, and then improve detection efficiency.

Claims (16)

1. a kind of Closed Loop Hall characterized by comprising
Electromagnetic induction circuit and micro-control unit；
The electromagnetic induction circuit, for incuding primary side magnetic field to generate Hall current signal, the primary side magnetic field is primary side electricity The magnetic field that signal generates is flowed, the primary current signal is the current signal in the test line in equipment under test；
The micro-control unit, for adjusting the Hall current signal using pulse width modulating technology, after being adjusted Current signal, so that secondary side magnetic field and the primary side magnetic field balance, the pair side magnetic field is the magnetic that secondary current signal generates , the secondary current signal handles to obtain through the current signal adjusted；
The micro-control unit is also used to determine the primary current signal according to the current signal adjusted；
The micro-control unit is also used to be calculated according to the voltage signal of the primary current signal and equipment under test described tested The performance parameter of equipment, and send to monitoring system the performance parameter of the equipment under test.
2. Closed Loop Hall according to claim 1, which is characterized in that the Closed Loop Hall further includes low Bandpass filter；
The micro-control unit, specifically for the Hall current signal is adjusted to pulse width modulation by adjusting duty ratio Pwm signal；
The low-pass filter, for the pwm signal to be converted to analog current signal；
The Closed Loop Hall further includes totem driving circuit；
The totem driving circuit obtains the secondary current signal for amplifying the analog current signal, so that institute Secondary side magnetic field and the primary side magnetic field is stated to balance.
3. Closed Loop Hall according to claim 1 or 2, which is characterized in that the micro-control unit further includes leading to Believe interface；
The communication interface, for being connect with monitoring system；
The micro-control unit, specifically for sending the property of the equipment under test to the monitoring system by the communication interface It can parameter.
4. Closed Loop Hall according to claim 3, which is characterized in that the micro-control unit includes that detection connects Mouthful；
The detection interface, for being connect with the voltage detection terminal of the equipment under test；
The micro-control unit is also used to obtain the voltage signal of the equipment under test by the detection interface.
5. Closed Loop Hall according to claim 3, which is characterized in that the micro-control unit is also used to pass through The communication interface obtains the voltage signal of the equipment under test from the monitoring system.
6. Closed Loop Hall according to claim 3, which is characterized in that the communication interface includes that wireless communication connects Mouth or wired communication interface；
The wireless communication interface includes purple honeybee ZigBee interface or WLAN Wi-Fi interface；
The wired communication interface includes RS232 interface or RS485 interface.
7. Closed Loop Hall according to claim 1 or 2, which is characterized in that the performance parameter includes: tested sets The accumulation electric energy of the standby voltage value of current value, equipment under test, the power of equipment under test or equipment under test.
8. a kind of detection method characterized by comprising
Closed Loop Hall incudes primary side magnetic field to generate Hall current signal, and the primary side magnetic field is the production of primary current signal Raw magnetic field, the primary current signal are the current signal in the test line in equipment under test；
The Closed Loop Hall adjusts the Hall current signal, the electricity after being adjusted using pulse width modulating technology Signal is flowed, so that secondary side magnetic field and the primary side magnetic field balance, the pair side magnetic field is the magnetic field that secondary current signal generates, The secondary current signal handles to obtain through the current signal adjusted；
The Closed Loop Hall determines the primary current signal according to the current signal adjusted；
The Closed Loop Hall calculates described be tested according to the voltage signal of the primary current signal and equipment under test and sets Standby performance parameter；
The Closed Loop Hall sends the performance parameter to monitoring system.
9. according to the method described in claim 8, it is characterized in that, the Closed Loop Hall modulates skill using pulse width Art adjusts the Hall current signal, the current signal after being adjusted, so that secondary side magnetic field and the primary side magnetic field balance, Include:
The Hall current signal is adjusted to pulse width modulation (PWM) letter by adjusting duty ratio by the Closed Loop Hall Number, and the pwm signal is adjusted to the secondary current signal, so that the pair side magnetic field and the primary side magnetic field are flat Weighing apparatus.
10. method according to claim 8 or claim 9, which is characterized in that the Closed Loop Hall is according to the primary side electricity Before the voltage signal of stream signal and equipment under test calculates the performance parameter of the equipment under test, the method also includes:
The Closed Loop Hall obtains the voltage signal of equipment under test.
11. according to the method described in claim 10, it is characterized in that, the Closed Loop Hall obtains the electricity of equipment under test Pressure signal include:
The Closed Loop Hall obtains the voltage signal of equipment under test by communication interface from the monitoring system；
Alternatively,
The Closed Loop Hall detects the voltage signal of equipment under test by detection interface；
The communication interface includes wireless communication interface or wired communication interface, and the wireless communication interface includes purple honeybee ZigBee Interface or WLAN Wi-Fi interface, the wired communication interface include RS232 interface or RS485 interface.
12. according to the method for claim 11, which is characterized in that the Closed Loop Hall sends institute to monitoring system Stating performance parameter includes:
The Closed Loop Hall sends the performance parameter to monitoring system by the communication interface.
13. according to the method described in claim 8, it is characterized in that, the performance parameter include: equipment under test current value, The accumulation electric energy of the voltage value of equipment under test, the power of equipment under test or equipment under test.
14. a kind of detection method characterized by comprising
Monitoring system receives the performance parameter for the equipment under test that Closed Loop Hall is sent, the performance parameter of the equipment under test It is calculated by the Closed Loop Hall according to the voltage signal of primary current signal and the equipment under test, the primary side Current signal is the current signal in the test line in equipment under test.
15. according to the method for claim 14, which is characterized in that the monitoring system receives Closed Loop Hall and sends Equipment under test performance parameter before, the method also includes:
The monitoring system detects the voltage signal of the equipment under test；
The monitoring system sends the voltage signal of the equipment under test to the Closed Loop Hall.
16. a kind of detection system characterized by comprising
Monitoring system, and the Closed Loop Hall as described in any one of power 1 to 7；
The monitoring system, for receiving the performance parameter for the equipment under test that the Closed Loop Hall is sent.
CN201811577641.8A 2018-12-21 2018-12-21 A kind of Closed Loop Hall and detection method Pending CN109633233A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811577641.8A CN109633233A (en) 2018-12-21 2018-12-21 A kind of Closed Loop Hall and detection method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811577641.8A CN109633233A (en) 2018-12-21 2018-12-21 A kind of Closed Loop Hall and detection method

Publications (1)

Publication Number Publication Date
CN109633233A true CN109633233A (en) 2019-04-16

Family

ID=66076694

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811577641.8A Pending CN109633233A (en) 2018-12-21 2018-12-21 A kind of Closed Loop Hall and detection method

Country Status (1)

Country Link
CN (1) CN109633233A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111965414A (en) * 2020-08-26 2020-11-20 南方电网数字电网研究院有限公司 Power measurement circuit, method and device
CN112730963A (en) * 2020-12-22 2021-04-30 唐新颖 Automobile-level Hall current sensor with temperature compensation and compensation method thereof
SE1951382A1 (en) * 2019-12-03 2021-06-04 Bombardier Transp Gmbh Remote sensor arrangement
CN114184833A (en) * 2021-10-27 2022-03-15 中国科学院微电子研究所 Spin Hall device, Hall voltage acquisition method and maximum pooling method
CN115616277A (en) * 2022-01-10 2023-01-17 荣耀终端有限公司 Monitoring circuit and monitoring system

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6713999B1 (en) * 1999-04-29 2004-03-30 Vacuumschmelze Gmbh Current sensor working in accordance with the compensation principle
CN202353312U (en) * 2011-10-28 2012-07-25 宁波三星电气股份有限公司 Remote electric energy quality monitoring system
CN204008835U (en) * 2014-07-11 2014-12-10 国家电网公司 A kind of current sensing means based on wireless singlechip
JP2015045519A (en) * 2013-08-27 2015-03-12 三菱電機株式会社 Current sensor, and manufacturing method of current sensor
US9041390B1 (en) * 2014-09-03 2015-05-26 Neilsen-Kuljian, Inc. Digitally controlled high-current DC transducer
CN104936326A (en) * 2015-07-08 2015-09-23 王春芳 Magnetron power supply device used in microwave oven
CN105092935A (en) * 2015-08-07 2015-11-25 宁波华宇电子有限公司 Closed-loop Hall current sensor
CN205450108U (en) * 2016-03-21 2016-08-10 威胜集团有限公司 Electric energy meter based on hall sensor
CN107271544A (en) * 2017-07-18 2017-10-20 昆明理工大学 A kind of pulsed eddy-current nondestructive test system based on ZigBee technology

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6713999B1 (en) * 1999-04-29 2004-03-30 Vacuumschmelze Gmbh Current sensor working in accordance with the compensation principle
CN202353312U (en) * 2011-10-28 2012-07-25 宁波三星电气股份有限公司 Remote electric energy quality monitoring system
JP2015045519A (en) * 2013-08-27 2015-03-12 三菱電機株式会社 Current sensor, and manufacturing method of current sensor
CN204008835U (en) * 2014-07-11 2014-12-10 国家电网公司 A kind of current sensing means based on wireless singlechip
US9041390B1 (en) * 2014-09-03 2015-05-26 Neilsen-Kuljian, Inc. Digitally controlled high-current DC transducer
CN104936326A (en) * 2015-07-08 2015-09-23 王春芳 Magnetron power supply device used in microwave oven
CN105092935A (en) * 2015-08-07 2015-11-25 宁波华宇电子有限公司 Closed-loop Hall current sensor
CN205450108U (en) * 2016-03-21 2016-08-10 威胜集团有限公司 Electric energy meter based on hall sensor
CN107271544A (en) * 2017-07-18 2017-10-20 昆明理工大学 A kind of pulsed eddy-current nondestructive test system based on ZigBee technology

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
武旭 等: "闭环霍尔电流传感器的硬件电路设计", 《传感器与微系统》 *
胡林权: "基于LM3S9B92 的锂离子电池充电器的设计与实现", 《微型机与应用》 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE1951382A1 (en) * 2019-12-03 2021-06-04 Bombardier Transp Gmbh Remote sensor arrangement
US11372028B2 (en) 2019-12-03 2022-06-28 Bombardier Transportation Gmbh Remote sensor arrangement
CN111965414A (en) * 2020-08-26 2020-11-20 南方电网数字电网研究院有限公司 Power measurement circuit, method and device
CN112730963A (en) * 2020-12-22 2021-04-30 唐新颖 Automobile-level Hall current sensor with temperature compensation and compensation method thereof
CN114184833A (en) * 2021-10-27 2022-03-15 中国科学院微电子研究所 Spin Hall device, Hall voltage acquisition method and maximum pooling method
CN115616277A (en) * 2022-01-10 2023-01-17 荣耀终端有限公司 Monitoring circuit and monitoring system
CN115616277B (en) * 2022-01-10 2023-09-22 荣耀终端有限公司 Monitoring circuit and monitoring system

Similar Documents

Publication Publication Date Title
CN109633233A (en) A kind of Closed Loop Hall and detection method
CN101788627B (en) Digital circuit for detecting disconnection of displacement sensor LVDT and detection method thereof
CN109416380A (en) Device and method for monitoring wireless power transmitter
CN105103401B (en) Sensor device and monitoring system
CN104237604A (en) Current monitoring warning device for overhead transmission line
CN107146420A (en) A kind of detection device of parking space state and the detection method of parking space state
CN106814243A (en) City cable line-to-ground circulation on-Line Monitor Device
CN103149431A (en) Multifunction watt-hour meter
CN213843115U (en) Ultrasonic wave transmitting and receiving circuit based on attenuation method
CN104251929A (en) Self-supplying current measuring device
CN116260250A (en) Intelligent monitoring system for high-frequency switch direct-current power supply
CN202948321U (en) Terminal inspection tour and controller based on internet of things
CN206990017U (en) A kind of intelligent telemetering electromagnetic flowmeter based on arrowband Internet of Things
CN207123945U (en) A kind of detection device of parking space state and the detecting system of parking space state
CN108241089A (en) Detection device
CN206959923U (en) A kind of two-wire system series system high-efficiency energy-storage circuit
CN204119037U (en) A kind of multichannel voltage continuously adjustabe power module and continuously adjustabe power-supply system
CN203502488U (en) Power detection device for air conditioner
CN113411145A (en) FSK demodulation decoding performance test method and device and wireless charging system
CN207502066U (en) A kind of low-power consumption temp measuring system
CN220085047U (en) Intelligent detection system for performance of current transformer
CN205263203U (en) Radio frequency electricity magnetic field intensity testing arrangement
CN102128652B (en) Hybrid-frequency excitation electromagnetic flow converter
CN110971150A (en) Many motor synchronous control system based on WIFI communication
CN210898992U (en) Intelligent speed regulation control system of motor

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20190416