CN102353914A - Three-dimensional pulse magnetic field measuring apparatus - Google Patents
Three-dimensional pulse magnetic field measuring apparatus Download PDFInfo
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- CN102353914A CN102353914A CN2011101896554A CN201110189655A CN102353914A CN 102353914 A CN102353914 A CN 102353914A CN 2011101896554 A CN2011101896554 A CN 2011101896554A CN 201110189655 A CN201110189655 A CN 201110189655A CN 102353914 A CN102353914 A CN 102353914A
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Abstract
The invention discloses a three-dimensional pulse magnetic field measuring apparatus which is characterized in that: an electromagnetic induction coil (1) is connected with a coil skeleton (2), a sampling resistor (3) is in parallel connection with the electromagnetic induction coil (1), and a frequency transmitter (11) and a voltage transmitter (4) connect the sampling resistor (3) with a PLC control system (5) respectively; the PLC control system (5) connects with a vertical displacement sensor (6), a transverse displacement sensor (7) and an angle displacement sensor (8) respectively. The vertical displacement sensor (6), the transverse displacement sensor (7) and the angle displacement sensor (8) are installed on a three-dimensional mobile mechanism (9); the coil skeleton (2) is installed on a connecting rod (15) which connects with an X direction dead lever (14) of the three-dimensional mobile mechanism (9). The three-dimensional pulse magnetic field measuring apparatus can measure a magnetic field with large gradient change, and has good applicability.
Description
Technical field
The present invention relates to a kind of magnetic field measuring device.
Background technology
The method of magnetic-field measurement at present mainly contains faraday's inductive electromagnetic method and Faraday magnetooptical effect method.The magneto-optic effect method is insensitive to environmental change, and external interference is less to the measuring system influence, but measuring system implements more complicated; Faradic electricity magnetic induction method, external interference is bigger to the influence of measuring amount, but system's realization is simple relatively, and from the angle of practical application and economy, the electromagnetic induction method can be used as a kind of practicable magnetic-field measurement method.But because magnetic field can't perception at the direction vector in space, generally when using faraday's inductive coil as magnetic field sensor, if when induction planes and magnetic direction out of plumb, induction current of being exported and voltage can't reflect the size of actual field intensity.Therefore require measuring system not only will have response speed faster, also must allow probe (coil) carry out three-dimensional motion, guarantee the reliability of measured value at measurement space.
Summary of the invention
The technical matters that the present invention will solve is; A kind of three-dimensional pulsed magnetic field measurement device is provided; This device makes measuring system have the range of broad, response speed and can accurately read magnetic field parameter value and the shift value on the three-dimensional faster, to overcome the deficiency that can't reflect actual field intensity that the traditional measurement device exists.
In order to solve described technical matters; The present invention takes following technical scheme: electromagnetic induction coil links to each other with coil rack, sample resistance is parallelly connected with electromagnetic induction coil; Between sample resistance and PLC control system, be connected frequency transmitter, voltage transmitter respectively, the PLC control system is connected with display; The PLC control system also is connected with length travel sensor, transversal displacement sensor, angular displacement sensor respectively, and length travel sensor, transversal displacement sensor, angular displacement sensor are installed in respectively in the three-dimensional travel mechanism; Coil rack is installed on the connecting link, and connecting link links to each other with the fixed bar of three-dimensional travel mechanism.
Described electromagnetic induction coil material is a fine copper wire, and evenly on coil rack, the coiling number of plies is the 1-6 layer.
The length of magnetic path L/ coil diameter D=0.866 of described electromagnetic induction coil institute coiling.
Described coil rack adopts Polyvinylchloride to make.
Described three-dimensional travel mechanism is connected with motor.
Electromagnetic induction coil is designed to adjustable.
When the present invention works; Inductive coil converts induced voltage to normal voltage signal that the PLC control system can be discerned through the voltage transmitter that connects; The external interface of PLC control system sent into the displacement signal on X, Z, the XOY direction in the three-dimensional travel mechanism respectively by three displacement transducers; Be presented on the liquid crystal display through the text display; Voltage/frequency conversion meter (V/FC) links to each other with the high-speed counting port of PLC control system; Measure the frequency in magnetic field, on text display, can read instantaneous frequency, field intensity and the three-dimensional shift value of treating measuring magnetic field.
The present invention with the PLC control system as control core; With common probe (coil) improvement for can the three-dimensional probe (coil) that moves; Make measuring system have the range of broad, response speed and can accurately read magnetic field parameter value and the shift value on the three-dimensional faster, measure the limitation that magnetic field exists to overcome traditional electrical magnetic induction method.
Beneficial effect of the present invention: adopt measuring system of the present invention, the gradient of changes of magnetic field is big more, and just sensitiveer to the coil reflection of measuring magnetic field, the magnetic field bigger to graded has favorable applicability; Measure the frequency in magnetic field with the high speed input port of PLC control system; Theoretical upper limit can reach 20KHz; Inductive coil is designed to adjustable; Guarantee that the peak value scope of measuring field intensity has wide-range; Solved the electrometer of field strength measurement range on the market and only limited to the low-frequency range of high-intensity magnetic field and the shortcoming of the high band of the low-intensity magnetic field of the usefulness of communicating by letter, adopted this device can accurately measure any field intensity value of field frequency at 1-4000HZ; To different magnetic-field measurement scopes, can adjust alternately with PLC (software) through outside hardware (coil), have good versatility; Display interface can show magnetic field intensity, the frequency values under any three-dimensional.
Description of drawings
Fig. 1 is the synoptic diagram of measurement mechanism of the present invention;
Fig. 2 is the electric hookup of measurement mechanism of the present invention;
Fig. 3 is the structure and the connected mode figure of electromagnetic induction coil of the present invention and coil rack;
Fig. 4 is the three-dimensional travel mechanism synoptic diagram of measurement mechanism of the present invention.
Embodiment
Embodiments of the invention: measurement mechanism of the present invention is anticipated as shown in Figure 1; Electromagnetic induction coil 1 links to each other with coil rack 2, sample resistance 3 is parallelly connected with electromagnetic induction coil 1; Between sample resistance 3 and PLC control system 5, be connected frequency transmitter 11, voltage transmitter 4 respectively, PLC control system 5 is connected with display 10; PLC control system 5 also is connected with length travel sensor 6, transversal displacement sensor 7, angular displacement sensor 8 respectively, and length travel sensor 6, transversal displacement sensor 7, angular displacement sensor 8 are installed in respectively in the three-dimensional travel mechanism 9; Coil rack 2 is installed on the connecting link 15, and connecting link 15 links to each other with the fixed bar 14 of three-dimensional travel mechanism 9.
Be in the differential duty owing to be arranged in the inductive coil 1 of gradient magnetic; Inductive coil skeleton 2 is designed to adjustable; The voltage at sample resistance 3 two ends be differential relationship by measuring magnetic field; Need obtain with by the consistent magnetic parameter of measuring magnetic field, through outer integrator the signal on the sample resistance is carried out integration and gets final product.Anticipate as shown in Figure 1; Through voltage transmitter 4 electromagnetic induction coil 1 voltage is changed into the normal voltage signal that PLC control system 5 can be discerned; With the outer integrator of PLC control system 5 conducts; To voltage signal sample, the line integral computing, field strength values is presented on the text display 10.
Described coil method is a fine copper wire, and evenly on coil rack, according to the size of measuring magnetic field, the coiling number of plies is the 1-6 layer, constitutes the coil differential ring, and magnetic field is big more, and the number of plies is more little.The loop construction size relationship is: the length of magnetic path L/ coil diameter D (comprising insulation course)=0.866 of coil institute coiling.
It is material that described coil rack adopts temperature coefficient Polyvinylchloride little, more or less freely processing, and one section of coil rack is fixing, and the other end connects inductive coil and stretches in the magnetic field space, and retainer uses when calibration probe verticality, can unload during detection.Anticipate as shown in Figure 3, described coil rack 2 one ends are fixed on the connecting link 15, and the other end connects inductive coil 1, and probe 12 is arranged on the inductive coil 1, and the lower end of probe 12 connects retainer 13.
The effect of said voltage transmitter is to convert the induced voltage on the coil differential ring to PLC manageable normal voltage signal.Voltage transmitter input and output amount is all selected the bipolar voltage signal.
Described three-dimensional mechanism mode of motion is the cylindrical coordinates motion, and power is provided by the motor that is connected on the stiff end, and connecting link 15 links to each other with the fixed bar 14 of directions X, and inductive coil 1 (probe) then is fixed on the connecting link 15 with securing member.X, Z plane are straight reciprocating motion; The XOY direction is a unidirectional rotary motion; The motion of X, Z direction all adopts relay control mode to carry out; Through just/linear reciprocating motion on the adhesive control coordinate axis of counter-rotating relay; Displacement transducer is fixed on the slide block with clip, the displacement of detection probe on X, Z direction in real time; On rotary seat, be connected with angular displacement sensor, in real time the anglec of rotation of detection probe on XOY plane.
The three-dimensional travel mechanism of measurement mechanism anticipates as shown in Figure 4; In this mechanism, except length travel sensor 6, transversal displacement sensor 7, angular displacement sensor 8, fixed bar 14 are installed, orienting lug 16, turning axle 17, stiff end 18, guide rail 19, motor 20, base 21, rotary seat 22 are installed also.
Maximum measurement range: the X of described vertical, horizontal displacement transducer displacement, Z direction are 500mm, and the linearity is not more than 0.30%; Angular displacement sensor 8 is 0-360 ° in XOY orientation measurement scope, 0.5 ° of resolution.
Described PLC control system adopts Siemens CPU224, has analog module EM235, and the signal resolution of analog quantity can reach 0.25ms.Effect has: carry out integral and calculating one, from the instantaneous voltage value of voltage transmitter read coil, and to induction electromotive force, draw real-time magnetic field intensity level and waveform parameter value, accomplish the processing of data; Two, utilize the high-speed counting port of PLC, the frequency in magnetic field is measured; Three, collection after the PLC innernal CPU is handled, demonstrates the D coordinates value of coil from the electric signal of three displacement transducers through text display.
Claims (8)
1. three-dimensional pulsed magnetic field measurement device; It is characterized in that: electromagnetic induction coil (1) links to each other with coil rack (2), sample resistance (3) is parallelly connected with electromagnetic induction coil (1); Between sample resistance (3) and PLC control system (5), be connected frequency transmitter (11), voltage transmitter (4) respectively, PLC control system (5) is connected with display (10); PLC control system (5) also is connected with length travel sensor (6), transversal displacement sensor (7), angular displacement sensor (8) respectively, and length travel sensor (6), transversal displacement sensor (7), angular displacement sensor (8) are installed in respectively in the three-dimensional travel mechanism (9); Coil rack (2) is installed on the connecting link (15), and connecting link (15) links to each other with the fixed bar (14) of three-dimensional travel mechanism (9).
2. three-dimensional pulsed magnetic field measurement device according to claim 1 is characterized in that: described electromagnetic induction coil (1) material is a fine copper wire, and evenly on coil rack, the coiling number of plies is the 1-6 layer.
3. three-dimensional pulsed magnetic field measurement device according to claim 2 is characterized in that: the length of magnetic path L/ coil diameter D=0.866 of described electromagnetic induction coil (1) institute coiling.
4. three-dimensional pulsed magnetic field measurement device according to claim 1 is characterized in that: described coil rack (2) adopts Polyvinylchloride to make.
5. three-dimensional pulsed magnetic field measurement device according to claim 1 is characterized in that: described three-dimensional travel mechanism (9) is connected with motor.
6. three-dimensional pulsed magnetic field measurement device according to claim 1 is characterized in that: electromagnetic induction coil (1) is for adjustable.
7. three-dimensional pulsed magnetic field measurement device according to claim 1 is characterized in that: orienting lug (16), turning axle (17), stiff end (18), guide rail (19), motor (20), base (21), rotary seat (22) also are installed in three-dimensional travel mechanism (9).
8. three-dimensional pulsed magnetic field measurement device according to claim 1 is characterized in that: maximum measurement range: the X of the displacement of described length travel sensor (6), transversal displacement sensor (7), Z direction are 500mm, and the linearity is not more than 0.30%; Angular displacement sensor (8) is 0-360 ° in XOY orientation measurement scope, 0.5 ° of resolution.
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| CN2011101896554A CN102353914A (en) | 2011-07-07 | 2011-07-07 | Three-dimensional pulse magnetic field measuring apparatus |
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| CN2011101896554A CN102353914A (en) | 2011-07-07 | 2011-07-07 | Three-dimensional pulse magnetic field measuring apparatus |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103472416A (en) * | 2013-09-22 | 2013-12-25 | 中国工程物理研究院总体工程研究所 | Portable space magnetism distribution measurement system |
| CN105652219A (en) * | 2014-12-03 | 2016-06-08 | 浙江工业职业技术学院 | Connecting rod driving three-dimensional magnetic field measuring probe |
| CN106547013A (en) * | 2016-10-18 | 2017-03-29 | 中国原子能科学研究院 | A kind of ion source beam diagnostics subtended angle measuring instrument |
| CN106547278A (en) * | 2016-10-18 | 2017-03-29 | 中国原子能科学研究院 | A kind of ion source beam diagnostics subtended angle measuring instrument control system |
| CN109116274A (en) * | 2017-06-23 | 2019-01-01 | 北京中科信电子装备有限公司 | A kind of four-degree-of-freedom measurement of magnetic field device |
| CN111381199A (en) * | 2020-03-31 | 2020-07-07 | 华中科技大学 | Pulse high-intensity magnetic field optical measurement system and method |
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| CN202110267U (en) * | 2011-07-07 | 2012-01-11 | 贵州大学 | Three-dimensional pulse magnetic-field measurement device |
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2011
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103472416A (en) * | 2013-09-22 | 2013-12-25 | 中国工程物理研究院总体工程研究所 | Portable space magnetism distribution measurement system |
| CN103472416B (en) * | 2013-09-22 | 2015-07-08 | 中国工程物理研究院总体工程研究所 | Portable space magnetism distribution measurement system |
| CN105652219A (en) * | 2014-12-03 | 2016-06-08 | 浙江工业职业技术学院 | Connecting rod driving three-dimensional magnetic field measuring probe |
| CN105652219B (en) * | 2014-12-03 | 2018-07-13 | 浙江工业职业技术学院 | A kind of connecting rod driving three-dimension reconstruction probe |
| CN106547013A (en) * | 2016-10-18 | 2017-03-29 | 中国原子能科学研究院 | A kind of ion source beam diagnostics subtended angle measuring instrument |
| CN106547278A (en) * | 2016-10-18 | 2017-03-29 | 中国原子能科学研究院 | A kind of ion source beam diagnostics subtended angle measuring instrument control system |
| CN106547278B (en) * | 2016-10-18 | 2018-03-09 | 中国原子能科学研究院 | A kind of ion gun beam diagnostics subtended angle measuring instrument control system |
| CN109116274A (en) * | 2017-06-23 | 2019-01-01 | 北京中科信电子装备有限公司 | A kind of four-degree-of-freedom measurement of magnetic field device |
| CN111381199A (en) * | 2020-03-31 | 2020-07-07 | 华中科技大学 | Pulse high-intensity magnetic field optical measurement system and method |
| CN111381199B (en) * | 2020-03-31 | 2021-02-09 | 华中科技大学 | Pulse high-intensity magnetic field optical measurement system and method |
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Application publication date: 20120215 |