CN105866714A - Magnetic field intensity detecting suite - Google Patents
Magnetic field intensity detecting suite Download PDFInfo
- Publication number
- CN105866714A CN105866714A CN201610325455.XA CN201610325455A CN105866714A CN 105866714 A CN105866714 A CN 105866714A CN 201610325455 A CN201610325455 A CN 201610325455A CN 105866714 A CN105866714 A CN 105866714A
- Authority
- CN
- China
- Prior art keywords
- circuit
- magnetic field
- field intensity
- external member
- output interface
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- 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.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
- G01R33/06—Measuring direction or magnitude of magnetic fields or magnetic flux using galvano-magnetic devices
- G01R33/07—Hall effect devices
Abstract
The invention relates to a magnetic field intensity detecting suite which comprises a detecting probe, a processing device and a collecting board card which are separately arranged on independent circuit boards respectively. The detecting probe comprises a Hall element arranged on the first circuit board and a signal output interface electrically connected with the Hall element. The processing device comprises a signal input interface, a processing circuit and an anolog data output interface arranged on the second circuit board. The collecting board card is provided with an analog data input interface, an A/D conversion circuit and a digital data output interface and used for transmitting digital data to an industrial personal computer for further analysis and processing. When the magnetic field intensity detecting suite is implemented, due to the fact that the detecting probe, the processing device and the collecting plate card are separated, the function of separating magnetic field intensity (magnetic flux) detection and signal processing can be achieved, a magnetic field intensity detecting device can be integrated into various kinds of online production and detection equipment conveniently, and the advantages of being high in flexibility, easy to dismount and mount, easy to integrate and good in reliability are achieved.
Description
Technical field
The present invention relates to magnetic field detection field, more particularly, it relates to a kind of magnetic field intensity detection external member.
Background technology
Magnetic phenomenon is a kind of the earliest by the physical phenomenon of human knowledge, along with developing rapidly of scientific and technological level, industry, doctor
The aspects such as treatment and life play the part of the most important role.In recent years, the new opplication on individual's intelligent terminal, as magnetic connects end
Mouthful, the brightest put out screen etc., it is necessary to when production and assembly terminal device, magnetic field intensity is measured in real time.Existing magnetic field
Strength detection equipment is mostly special equipment, integrate signal detection, process, the functional module such as analysis, volume takes up space greatly,
And lacking flexibility, convenience, inconvenience embeds in various online productions and detection equipment, and use cost is high.
Accordingly, it would be desirable to develop a kind of detection dress that can meet the requirements such as high, easy to assemble, easy of integration, the good reliability of flexibility ratio
Put.
Summary of the invention
The technical problem to be solved in the present invention is, for the drawbacks described above of prior art, it is provided that a kind of magnetic field intensity inspection
Survey external member.
The technical solution adopted for the present invention to solve the technical problems is: structure a kind of magnetic field intensity detection external member, its bag
Include detection probe, processing means and the analog input card being arranged on separated from each other on the most independent circuit board, wherein:
Described detection probe includes for sensing magnetic field intensity and producing the Hall element and suddenly of corresponding electrical potential difference signal
The signal output interface of your element electrical connection, and described Hall element and described signal output interface be arranged at first circuit board
On；
Described processing means includes the signal input interface for receiving described electrical potential difference signal, for described electrical potential difference
Signal carries out processing and is connected with described process circuit with the process circuit of the analogue data of described electrical potential difference signal correction to generate
Analogue data output interface；Described signal input interface, process circuit and described analogue data output interface are arranged at second
On circuit board；
The analogue data input interface for being connected it is provided with described process circuit, for institute on described analog input card
State analogue data and carry out the A/D change-over circuit of the A/D conversion corresponding numerical data of generation, for the digital number being connected with industrial computer
According to output interface, to transmit described numerical data to described industrial computer to be further analyzed process.
In magnetic field intensity of the present invention detection external member, including
It is connected cable with the first of described processing means for connecting described detection probe；And
It is connected cable with the second of described analog input card for connecting described processing means.
In magnetic field intensity of the present invention detection external member,
Described first connection cable one end is connected with the signal output interface being arranged on described first circuit board, the other end
It is connected with the signal input interface on described second circuit board；
Described second connects cable one end is connected with the analogue data output interface being arranged on described second circuit board, separately
One end is connected with the analogue data input interface on described analog input card.
In magnetic field intensity of the present invention detection external member,
Described analog input card is pci bus analog data collection card, and it is placed in the PCI slot of described industrial computer base plate
On, the numerical data output interface of described analog input card docks with described PCI slot.
In magnetic field intensity of the present invention detection external member, described first circuit board is arranged on what weak magnetic material was made
On probe base plate, described second circuit board is arranged on the fixing substrate that metal material is made.
In magnetic field intensity of the present invention detection external member,
Described processing means includes: for providing the Power convert electricity of working power for described process circuit and detection probe
Road and constant-current source circuit, wherein said power-switching circuit includes that direct current 24V turns +/-15V change-over circuit ,+15V turns+10V conversion
Circuit ,+10V turn+5V change-over circuit and-15V turns-5V change-over circuit.
In magnetic field intensity of the present invention detection external member, described process circuit includes:
The bias amplifier that electrical potential difference signal for producing described Hall element is filtered and amplification processes；
For the amplitude adjustable amplifying circuit that the amplitude of the output signal of bias amplifier is adjusted；And
For the output signal of amplitude amplifying circuit being carried out the differential transformation circuit of differential transformation.
In magnetic field intensity of the present invention detection external member,
Described+15V turns+10V change-over circuit for providing operating voltage for described constant-current source circuit；
Described+10V turns+5V change-over circuit for providing reference voltage for described constant-current source circuit and putting for described biasing
Big circuit, amplitude amplifying circuit and differential transformation circuit provide positive operating voltage；
Described-15V turns-5V change-over circuit for electric for described bias amplifier, amplitude amplifying circuit and differential transformation
Road provides negative operating voltage.
Implement the magnetic field intensity detection external member of the present invention, have the advantages that and be arranged on independent circuits plate suddenly
The electrical potential difference signal that your element produces, after configured process circuit on another independent circuits plate processes, will characterize magnetic
The electrical potential difference signal of field intensity is converted into the voltage signal that computer card (i.e. analog input card) can identify, then by analog input card
On A/D change-over circuit process, by characterize magnetic field intensity numerical data send into computer be analyzed.Due to detection probe,
Processing means separates with analog input card three, can realize the function that magnetic field intensity (magnetic flux) detects, signal transacting is separated, just
In being integrated in various online production and detection equipment, have that flexibility ratio is high, easy to assemble, easy of integration, the advantage of good reliability.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the structured flowchart of magnetic field intensity of the present invention detection external member；
Fig. 2 is the structural representation of detection probe in magnetic field intensity of the present invention detection external member；
Fig. 3 is the structural representation of processing means in magnetic field intensity of the present invention detection external member；
Fig. 4 is the structural representation of analog input card in magnetic field intensity of the present invention detection external member；
Fig. 5 is that+the 15V in the processing means of magnetic field intensity of the present invention detection external member is to+10V change-over circuit schematic diagram；
Fig. 6 is that the 24V in the processing means of magnetic field intensity of the present invention detection external member is to +/-15V change-over circuit schematic diagram；
Fig. 7 is that-the 15V in the processing means of magnetic field intensity of the present invention detection external member is to-5V change-over circuit schematic diagram；
Fig. 8 is that+the 10V in the processing means of magnetic field intensity of the present invention detection external member is to+5V change-over circuit schematic diagram；
Fig. 9 is the constant-current source circuit schematic diagram in the processing means of magnetic field intensity of the present invention detection external member；
Figure 10 is the bias amplifier schematic diagram in the processing means of magnetic field intensity of the present invention detection external member；
Figure 11 is the amplitude adjustable amplifying circuit schematic diagram in the processing means of magnetic field intensity of the present invention detection external member；
Figure 12 is the differential conversion circuit schematic diagram in the processing means of magnetic field intensity of the present invention detection external member；
Figure 13 is the Hall element operation principle schematic diagram in magnetic field intensity of the present invention detection external member；
Figure 14 is the magnetic field intensity that records of the detecting element electrical potential difference with generation of magnetic field intensity of the present invention detection external member
Graph of a relation；
It is the signal output waveform figure of Hall element in magnetic field intensity of the present invention detection external member shown in Figure 15 a, and Figure 10
Voltage waveform between middle spy point a and b；
It is the output waveform figure of bias amplifier in magnetic field intensity of the present invention detection external member shown in Figure 15 b, and Figure 10
A middle spy point c voltage-to-ground waveform；
It is the amplitude amplifying circuit output waveform figure in magnetic field intensity of the present invention detection external member shown in Figure 16 a, and in Figure 11
Visit some d voltage-to-ground waveform；
Shown in Figure 16 b is the output waveform figure of the differential transformation circuit in magnetic field intensity of the present invention detection external member, and figure
Point e and f voltage-to-ground waveform respectively is visited in 12.
Detailed description of the invention
Understanding in conjunction with Fig. 1-4, the magnetic field intensity detection external member of the present invention includes being arranged on separated from each other the most independent
Detection probe 1, processing means 2 and analog input card 3 on circuit board.
As in figure 2 it is shown, detection probe 1 includes for sensing magnetic field intensity and producing the Hall unit of corresponding electrical potential difference signal
Part 12 electrically connects the signal output interface 17 of (not shown) with Hall element.Hall element 12 and signal output interface 17
Being arranged on first circuit board 1a, first circuit board 1a is arranged on the probe base plate that weak magnetic material (such as copper, aluminium etc.) is made
On 1b.
As it is shown on figure 3, processing means 2 includes the signal input interface 27 for receiving electrical potential difference signal, for electromotive force
Difference signal carries out processing the mould being connected with generation with process circuit 21 and the process circuit of the analogue data of electrical potential difference signal correction
Intend data output interface 28.Signal input interface 27, process circuit 21 and analogue data output interface 28 are arranged at second circuit
2a on plate, second circuit board 2a are arranged on the fixing substrate 2b that metal material is made.
As shown in Figure 4, analog input card 3 is provided with the analogue data input interface 38 for being connected with process circuit, uses
The A/D change-over circuit of corresponding numerical data is generated, for the numeral being connected with industrial computer in analogue data being carried out A/D conversion
Data output interface, to transmit numerical data to industrial computer to be further analyzed process.
The magnetic field intensity detection external member of the present invention also includes that the first connection cable 7 and second connects cable 8.
As shown in Figures 2 and 3, the first connection cable 7 is used for connecting detection probe and processing means.
As shown in Figures 3 and 4, the second connection cable 8 is used for connecting processing means and analog input card.
Wherein, first connect cable 7 one end be connected with the signal output interface 17 being arranged on first circuit board 1a, another
End is connected with the signal input interface 27 on second circuit board 2a.
Second connect cable 8 one end be connected 28 with the analogue data output interface being arranged on second circuit board 2a, another
End is connected with the analogue data input interface 38 on analog input card 3.
In one embodiment of this invention, analog input card is pci bus analog data collection card, and it is placed in industrial computer
On the PCI slot of base plate, the numerical data output interface of analog input card docks with PCI slot.
Referring back to Fig. 1, processing means 2 also includes: for providing the electricity of working power for process circuit 21 and detection probe 1
Power-switching circuit 23 and constant-current source circuit 25.Wherein power-switching circuit 23 includes that direct current 24V turns +/-15V change-over circuit ,+15V
Turn+10V change-over circuit ,+10V turns+5V change-over circuit and-15V turns-5V change-over circuit, sees Fig. 5-8.Wherein, Fig. 5 is this
+ 15V in the processing means of invention magnetic field intensity detection external member is to+10V change-over circuit schematic diagram；Fig. 6 is that magnetic field of the present invention is strong
24V in the processing means of degree detection external member is to +/-15V change-over circuit schematic diagram；Fig. 7 is that magnetic field intensity of the present invention detects external member
Processing means in-15V to-5V change-over circuit schematic diagram；Fig. 8 is in the processing means of magnetic field intensity of the present invention detection external member
+ 10V to+5V change-over circuit schematic diagram.
Fig. 9 is the constant-current source circuit principle in the processing means of magnetic field intensity detection external member according to an embodiment of the invention
Figure.Above-mentioned+15V turns+10V change-over circuit for providing operating voltage for constant-current source circuit 25, it addition, turned+5V conversion by+10V
Circuit provides reference voltage for constant-current source circuit 25.Constant-current source circuit provides operating voltage for Hall element.
Process circuit 21 in the processing means of magnetic field intensity of the present invention detection external member includes: for producing Hall element
Electrical potential difference signal be filtered and amplification process bias amplifier；Width for the output signal to bias amplifier
The amplitude adjustable amplifying circuit that value is adjusted；And for the output signal of amplitude amplifying circuit being carried out the difference of differential transformation
Translation circuit.
Figure 10 is the principle of bias amplifier one embodiment in the processing means of magnetic field intensity of the present invention detection external member
Figure.Electrical potential difference signal from Hall element two ends is filtered processing by bias amplifier, is then amplified, biased electrical
In route Figure 10, R13, R14, R15 are constituted.
Figure 11 is amplitude adjustable amplifying circuit one embodiment in the processing means of magnetic field intensity of the present invention detection external member
Schematic diagram.As shown in figure 11, amplitude regulation is realized by R16, R18.
Figure 12 is the principle of differential conversion circuit one embodiment in the processing means of magnetic field intensity of the present invention detection external member
Figure.Differential conversion circuit is made up of the reverse amplification circuit of U3, R17 and R22 group.
Above-mentioned+10V turn+5V change-over circuit be bias amplifier, amplitude amplifying circuit and differential transformation circuit just providing
Operating voltage；-/15V turns-5V change-over circuit for providing for bias amplifier, amplitude amplifying circuit and differential transformation circuit
Negative operating voltage.
Figure 13 is the Hall element operation principle schematic diagram in magnetic field intensity of the present invention detection external member.Figure 14 is magnetic of the present invention
The magnetic field intensity that records of detecting element of field intensity detection external member and the graph of a relation of the electrical potential difference of generation.As shown in figure 13, one
Individual cross section is definite value, is definite value by the electric current of C1, C2, electrical potential difference Vb at C3, C4 two ends and the magnetic of this cross section normal direction
Field intensity B is directly proportional, as shown in figure 14.
Waveform 1 shown in Figure 15 a is the signal output waveform figure of the Hall element in magnetic field intensity of the present invention detection external member,
And Figure 10 visits voltage waveform between point a and b.
Waveform 2 shown in Figure 15 b is the bias amplifier (shown in Figure 10) in magnetic field intensity of the present invention detection external member
Output waveform figure, and Figure 10 are visited some c voltage-to-ground waveform.
Waveform 3 shown in Figure 16 a is that the amplitude amplifying circuit (shown in Figure 11) in magnetic field intensity of the present invention detection external member is defeated
Go out oscillogram, and Figure 11 are visited some d voltage-to-ground waveform.
Waveform 4 shown in Figure 16 b is the differential transformation circuit (shown in Figure 12) in magnetic field intensity of the present invention detection external member
Output waveform figure, and Figure 12 are visited point e and f voltage-to-ground waveform respectively.
Above example, only for technology design and the feature of the explanation present invention, its object is to allow person skilled in the art
Scholar will appreciate that present disclosure and implements accordingly, can not limit the scope of the invention.All with right of the present invention want
The equalization asking scope to be done changes and modifies, and all should belong to the covering scope of the claims in the present invention.
Claims (8)
1. a magnetic field intensity detection external member, it is characterised in that include being arranged on separated from each other on the most independent circuit board
Detection probe (1), processing means (2) and analog input card (3), wherein:
Described detection probe (1) include for sense magnetic field intensity and produce corresponding electrical potential difference signal Hall element (12),
The signal output interface (17) electrically connected with Hall element, and described Hall element (12) and described signal output interface (17) set
It is placed on first circuit board (1a)；
Described processing means (2) includes the signal input interface (27) for receiving described electrical potential difference signal, for described electricity
Potential difference signal carries out processing the process circuit (21) to generate the analogue data with described electrical potential difference signal correction and described process
The analogue data output interface (28) that circuit connects；Described signal input interface (27), process circuit (21) and analogue data are defeated
Outgoing interface (28) is arranged on second circuit board (2a)；
It is provided with the analogue data input interface (38) for being connected with described process circuit on described analog input card (3), is used for
Described analogue data is carried out A/D conversion and generates the A/D change-over circuit of corresponding numerical data, for the number being connected with industrial computer
Digital data output interface, to transmit described numerical data to described industrial computer to be further analyzed process.
Magnetic field intensity the most according to claim 1 detection external member, it is characterised in that include
It is connected cable (7) with the first of described processing means for connecting described detection probe；And
It is connected cable (8) with the second of described analog input card for connecting described processing means.
Magnetic field intensity the most according to claim 2 detection external member, it is characterised in that
Described first connects cable (7) one end is connected with the signal output interface (17) being arranged on described first circuit board, separately
One end is connected with the signal input interface (27) on described second circuit board；
Described second connects cable (8) one end is connected with the analogue data output interface being arranged on described second circuit board
(28), the other end is connected with the analogue data input interface (38) on described analog input card.
Magnetic field intensity the most according to claim 1 detection external member, it is characterised in that
Described analog input card is pci bus analog data collection card, and it is placed on the PCI slot of described industrial computer base plate,
The numerical data output interface of described analog input card docks with described PCI slot.
Magnetic field intensity the most according to claim 1 detection external member, it is characterised in that described first circuit board (1a) is arranged on
On the probe base plate (1b) that weak magnetic material is made, described second circuit board (2a) is arranged on the fixing substrate that metal material is made
(2b) on.
Magnetic field intensity the most according to claim 1 detection external member, it is characterised in that
Described processing means (2) including: for providing the power supply of working power for described process circuit (21) and detection probe (1)
Change-over circuit (23) and constant-current source circuit (25), wherein said power-switching circuit (23) includes that direct current 24V turns the conversion of +/-15V
Circuit ,+15V turn+10V change-over circuit ,+10V turns+5V change-over circuit and-15V turns-5V change-over circuit.
Magnetic field intensity the most according to claim 6 detection external member, it is characterised in that described process circuit (21) including:
The bias amplifier that electrical potential difference signal for producing described Hall element is filtered and amplification processes；
For the amplitude adjustable amplifying circuit that the amplitude of the output signal of bias amplifier is adjusted；And
For the output signal of amplitude amplifying circuit being carried out the differential transformation circuit of differential transformation.
Magnetic field intensity the most according to claim 7 detection external member, it is characterised in that
Described+15V turns+10V change-over circuit for providing operating voltage for described constant-current source circuit (25)；
Described+10V turns+5V change-over circuit for providing reference voltage for described constant-current source circuit (25) and putting for described biasing
Big circuit, amplitude amplifying circuit and differential transformation circuit provide positive operating voltage；
Described-15V turns-5V change-over circuit for carrying for described bias amplifier, amplitude amplifying circuit and differential transformation circuit
For negative operating voltage.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610325455.XA CN105866714A (en) | 2016-05-17 | 2016-05-17 | Magnetic field intensity detecting suite |
| PCT/CN2017/084662 WO2017198167A1 (en) | 2016-05-17 | 2017-05-17 | Magnetic field intensity detection set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610325455.XA CN105866714A (en) | 2016-05-17 | 2016-05-17 | Magnetic field intensity detecting suite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105866714A true CN105866714A (en) | 2016-08-17 |
Family
ID=56634224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610325455.XA Pending CN105866714A (en) | 2016-05-17 | 2016-05-17 | Magnetic field intensity detecting suite |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105866714A (en) |
| WO (1) | WO2017198167A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017198167A1 (en) * | 2016-05-17 | 2017-11-23 | 深圳市智信精密仪器有限公司 | Magnetic field intensity detection set |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024006078A1 (en) | 2022-06-27 | 2024-01-04 | Helicoid Industries Inc. | High impact-resistant, reinforced fiber for leading edge protection of aerodynamic structures |
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| Publication number | Publication date |
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| WO2017198167A1 (en) | 2017-11-23 |
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