CN105629081B - Measure the method and device thereof of the electric field strength in strong electrical field - Google Patents
Measure the method and device thereof of the electric field strength in strong electrical field Download PDFInfo
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- CN105629081B CN105629081B CN201610115644.4A CN201610115644A CN105629081B CN 105629081 B CN105629081 B CN 105629081B CN 201610115644 A CN201610115644 A CN 201610115644A CN 105629081 B CN105629081 B CN 105629081B
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- electric field
- field strength
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/0864—Measuring electromagnetic field characteristics characterised by constructional or functional features
- G01R29/0871—Complete apparatus or systems; circuits, e.g. receivers or amplifiers
Abstract
The present invention relates to electric field intensity measuremenrt technical fields, specifically provide a kind of method and device thereof for measuring the electric field strength in strong electrical field, it is first shut off electric field, the spatial position that exploration point charge body balance is needed to measure electric field strength in the electric field by least three tensiometers again, records the initial tensile force value of multiple tensiometers respectively.Secondly, being then turned on electric field, the pulling force size for adjusting tensiometer makes to sound out point charge body in the original location again in equilibrium state, records the real-time value of thrust of multiple tensiometers respectively.Then, the real-time value of thrust of each tensiometer and the difference of initial tensile force value are calculated, pulling force difference is obtained, then calculates the resultant force of multiple pulling force differences, the electric field force F of the spatial position measured calculates the electric field strength of the spatial position of measurement according to electric field force F.To obtain the high precision electro field intensity in strong electrical field.
Description
Technical field
The present invention relates to electric field intensity measuremenrt technical fields, in particular to the electric-field strength in a kind of measurement strong electrical field
The method and device thereof of degree.
Background technique
Electric field strength is used to indicate that the power of electric field and the physical quantity in direction.Point charge is soundd out in certain point in the electric field
(positive charge) electric field force suffered by the point and its electrically charged ratio are the amount of one with exploration point charge-independent.Then with examination
The direction for visiting point charge (positive charge) electric field force suffered by the point is direction of an electric field, is by the vector definition of size of aforementioned ratio
The electric field strength of the point, commonly using E indicates.According to definition, the direction of the electric field strength of certain point can use an exploration point charge in electric field
The direction of an electric field of (positive charge) electric field force suffered by the point determines；Electric field strong and weak can be as the power and exploration point suffered by probe charge
The ratio of charge carried charge determines.Two conditions should be met by souning out point charge；(1) its dimension must be small to can be counted as
Point charge, to determine every in field property；(2) its electricity wants sufficiently small so that due to its merging do not cause it is original
The redistribution of electric field or influence to active electric field are negligible.
Conventional electric field ionization meter is all completed by antenna, due to being limited by antenna size, is unable to get in space everybody
The accurate electric field strength set is unable to satisfy the testing requirement of the high-precision field strength distribution in strong electrical field.
Summary of the invention
It is strong to obtain the purpose of the present invention is to provide a kind of method and device thereof of the electric field strength in measurement strong electrical field
High precision electro field intensity in electric field.
The present invention is implemented as follows:
It is needing to survey firstly, point charge body balance will be soundd out by least three tensiometers in the state of closing strong electrical field
The spatial position for measuring electric field strength, records the initial tensile force value of each tensiometer respectively.
Secondly, adjusting the pulling force size of at least three tensiometer in the state of opening strong electrical field, make to sound out point electricity
Lotus body is in equilibrium state in the spatial position for needing to measure electric field strength again, records the real-time pulling force of each tensiometer respectively
Value.
Then, the real-time value of thrust of each tensiometer and the difference of initial tensile force value are calculated, pulling force difference is obtained, then
It is calculated according to multiple pulling force differences and sounds out point charge body in the electric field force of the spatial position for needing to measure electric field strength, then root
The electric field strength of the spatial position is calculated according to electric field force.
Further, the method for the electric field strength in above-mentioned measurement strong electrical field, the quantity of at least three tensiometers are six,
Six tensiometers are respectively arranged at corresponding just as three reference axis of the space coordinates of origin using the exploration point charge body
In negative direction.
By six tensiometers corresponding just as three reference axis of the space coordinates of origin to sound out some charge bodies
An exploration point charge body is acted in negative direction, so that an exploration point charge body is in equilibrium state, i.e., is with joint efforts zero.Convenient for accurate
The value of thrust that electric field opens all directions of front and back is measured, and then easily convenient for calculating the difference that electric field opens the pulling force of front and back
Value, so that calculating electric field opens the resultant force i.e. size of electric field force and direction that front and back changes.
Further, the method for the electric field strength in above-mentioned measurement strong electrical field will sound out point charge body balance and close shape
Behind the spatial position for needing to measure electric field strength in the electric field of state, to the exploration point charge body whether in needs measurement electricity
The spatial position of field intensity carries out calibration calibration.
By carrying out calibration calibration to the place spatial position for souning out point charge body, so that the standard of the spatial position to measurement
True property is checked and approved, and enables the exploration point charge body after balance to be precisely located at the spatial position for needing to measure, to guarantee
The accuracy of the electric field strength finally obtained.
Further, the method for the electric field strength in above-mentioned measurement strong electrical field sounds out point charge in strong electrical field open state
After weight is newly in equilibrium state, to the exploration point charge body whether the spatial position for needing to measure electric field strength into
Row calibration calibration.
By above-mentioned setting, so that ensure that electric field opens front and back, the one of the spatial position that point charge body is in is soundd out
Cause property finally obtains more so that the difference finally measured can accurately react electric field to the active force for souning out point charge body
Accurate electric field strength.
Further, the method for the electric field strength in above-mentioned measurement strong electrical field, spatial position by Laser Autocollimator into
Row calibration calibration.
The calibration for souning out point spatial position where charge body to be demarcated by Laser Autocollimator, accuracy is very high,
It is easy to operate.
A kind of device of electric field strength in strong electrical field includes: to sound out point a charge body, multiple tensiometers, sounds out a point charge body
It is placed on the spatial position for needing to measure electric field strength in strong electrical field, the drag hook of each tensiometer passes through with point charge body is soundd out
Line of pull is fixedly connected.
Further, above-mentioned apparatus, the quantity of tensiometer are six, and six tensiometers are respectively arranged to sound out a charge
Body is on six change in coordinate axis direction of the space coordinates of origin.
The setting in above-mentioned six tensiometers and respective direction allows to accurately and quickly make to sound out point charge body and is in
The equilibrium state that resultant force is zero.It is also convenient for the calculating of subsequent electric field power, so that entire calculating process is simpler.
Further, above-mentioned apparatus, tensiometer are the high precision pull meters that least count is 0.001N.
The setting of above-mentioned tensiometer represents tensiometer highly precisely to the pulling force for souning out point charge body,
Electric field force and electric field strength to be calculated is more accurate.
Further, above-mentioned apparatus, souning out point charge body is electrification sphere, and the diameter for charging sphere is less than or equal to 2mm,
The quantity of electric charge is 1 × 10-8C~1 × 10-2C。
Using electrification sphere as point charge body is soundd out can accurately and easily be tested very much, the reason for this is that sphere is each
The shape in a direction is all the same, is adjusted convenient for tensiometer, is allowed to balance, and the diameter for charging sphere is smaller, obtained test
As a result accurate and effective, the setting of the diameter and the quantity of electric charge of above-mentioned electrification sphere, so that can be very good by above-mentioned apparatus are got over
Measure accurately and effectively electric field strength.
Further, above-mentioned apparatus further includes two Laser Autocollimators, and two Laser Autocollimators are set to sound out
Point charge body is in the two of them reference axis of space coordinates of origin, and the laser that two Laser Autocollimators issue mutually hangs down
Directly.
The setting of above-mentioned two Laser Autocollimator can allow two Laser Autocollimators rapidly and accurately to examination
The spatial position for visiting point charge body carries out quickly calibrated calibration, easy to operate.
It should be noted that wherein strong electrical field refers to that electric field strength is more than or equal to the electric field of 5kV/m.Sound out point charge body
The quantity of electric charge is 1 × 10-8C~1 × 10-2C.
It is that the present invention realizes to sound out a point charge body the utility model has the advantages that passing through and being arranged in the electric field, and pass through at least three pulling force
Meter is fixed to point charge body is soundd out, so that sound out point charge body is in equilibrium state always, i.e., it is with joint efforts zero.To obtain
Electric field opens each tensiometer value of thrust of front and back, then the variation difference that electric field opens each tensiometer in front and back is calculated, then
Resultant force is calculated by changing difference, to obtain souning out the electric field force that point charge body is subject under the action of electric field, then leads to
The calculation formula for crossing electric field strength calculates electric field strength, and this method is simple and convenient, and can measure with considerable accuracy out electric field
In each spatial position electric field strength, the especially measurement to the electric field strength in strong electrical field, also, measure needed for device
Structure it is simple, be easily installed use.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the structural schematic diagram of the device of the electric field strength in the measurement strong electrical field that the embodiment of the present invention provides.
Appended drawing reference summarizes: the device 100 of the electric field strength in measurement strong electrical field；Tensiometer 110；Line of pull 111；It sounds out
Point charge body 120；Laser Autocollimator 130.
Specific embodiment
The present invention is described in further detail below through specific implementation examples and in conjunction with the accompanying drawings.
A kind of method of electric field strength in measurement strong electrical field:
Firstly, first closing strong electrical field, there is no electric field line in strong electrical field at this time, sounds out point charge body not by the work of electric field force
With will sound out point charge body balance by least three tensiometers and need to measure the spatial position of electric field strength in the electric field, i.e.,
Point charge body is soundd out under the action of multiple tensiometers, the resultant force for the power that all directions are subject to is zero.Then it records respectively multiple
The initial tensile force value of tensiometer.
Specifically, in the present embodiment, the quantity of tensiometer is six, and six tensiometers are respectively arranged to sound out a charge
Body is to be located at positive negative direction, the Y of X-axis in the corresponding positive negative direction of three reference axis of the space coordinates of origin
In the positive negative direction of axis, the positive negative direction of Z axis.It sounds out after putting charge body balance (being with joint efforts zero), obtained initial tensile force value
For Nx+、Nx-、Ny+、Ny-、Nz+、Nz-.By six tensiometers to sound out some charge bodies as six of the space coordinates of origin
An exploration point charge body is acted on change in coordinate axis direction, so that an exploration point charge body is in equilibrium state, i.e., is with joint efforts zero.It is convenient for
The value of thrust that electric field opens all directions of front and back is measured, and then accurately and easily convenient for calculating the pulling force that electric field opens front and back
Difference, thus calculate electric field open front and back change the resultant force i.e. size of electric field force and direction.
It needs to measure electricity in the strong electrical field of point charge body balance in off position further, in this embodiment will sound out
Behind the spatial position of field intensity, then to sound out point charge body whether it is described measurement electric field strength spatial position carry out calibration mark
It is fixed, the spatial position coordinate for souning out point charge body is compared with the spatial position coordinate of required measurement electric field strength, if not
Position that is same then retightening exploration point charge body, until identical.By carrying out calibration calibration to spatial position, allow to pair
The accuracy for the spatial position for needing to measure is checked and approved, and the exploration point charge body after balance is enabled to be precisely located at needs
The spatial position of measurement, to guarantee the accuracy of the electric field strength finally obtained.
Secondly, rebalancing the exploration point charge body in electric field: unlatching, which is placed with, sounds out point charge body in equilibrium state
Strong electrical field, due to sound out point charge body in the electric field by the effect of electric field force, thus sound out a charge body position occur
Therefore variation makes an exploration point charge weight newly be in equilibrium state by adjusting the pulling force size of six tensiometers again at this time, and
The position consistency that position and electric field in equilibrium state are in when not opening, then records the real-time of multiple tensiometers respectively again
Value of thrust, multiple real-time value of thrust are respectively N'x+、N'x-、N'y+、N'y-、N'z+、N'z-。
Further, in this embodiment souning out point charge weight under strong electrical field open state and being newly in equilibrium state
Afterwards, then calibration again is carried out to the spatial position where souning out point charge body to demarcate.Ensure that electric field opens front and back, point is soundd out
The consistency for the position that charge body is in, so that the difference finally measured can accurately react electric field to exploration point charge body
Active force finally obtains accurate electric field strength.
Further, in this embodiment the spatial position where souning out point charge body carries out school by Laser Autocollimator
Fiducial mark is fixed.Laser Autocollimator carries out positioning and demarcating by position of the laser to object, is determined by multiple Laser Autocollimators
The spatial position of required measurement electric field strength, the laser that multiple Laser Autocollimators issue converge to a bit, obtain the space bit
The space coordinate set, then determined by Laser Autocollimator and whether sound out point charge body in the required space bit for measuring electric field strength
Set place.This calibrating mode accuracy is very high, operates also convenient and efficient.Therefore, electric to point is soundd out by Laser Autocollimator
The calibration calibration of spatial position where lotus body can be further ensured that the accuracy for souning out point charge body position.
Then, it calculates electric field strength: calculating the real-time value of thrust of each tensiometer and the difference of initial tensile force value, drawn
Power difference, the pulling force difference are respectively (N'x+-Nx+)、(N'x--Nx-)、(N'y+-Ny+)、(N'y--Ny-)、(N'z+-Nz+)、
(N'z--Nz-), then the resultant force of six pulling force differences is calculated, obtains souning out point charge body in the electric field force of the spatial position, six
A pulling force difference is respectively a component, and the direction of six component is respectively the positive negative direction of three reference axis, according to six component
It is synthesized, to obtain souning out the electric field force F that point charge body is subject in the spatial position, calculates this further according to electric field force F
The electric field strength E of spatial position sounds out electric field force F that point charge body is subject to divided by souning out point its calculation formula is E=F/q
The quantity of electric charge q that charge body has.
It should be noted that wherein strong electrical field refers to that electric field strength is more than or equal to the electric field of 5kV/m.Sound out point charge body
The quantity of electric charge is 1 × 10-8C~1 × 10-2C.
Point charge body is soundd out by being arranged in strong electrical field, and is consolidated by six tensiometers to point charge body is soundd out
It is fixed, so that sound out point charge body is in equilibrium state always, i.e., it is with joint efforts zero.To obtain each pulling force that electric field opens front and back
The value of thrust of meter, then the tension variations difference that electric field opens each tensiometer in front and back is calculated, then pass through pulling force difference meter
Calculation obtains resultant force, to obtain souning out the electric field force that point charge body is subject under the action of electric field, then the meter for passing through electric field strength
It calculates formula and calculates electric field strength, this method is simple and convenient, each spatial position in the electric field that can measure with considerable accuracy out
Electric field strength, the especially measurement to the electric field strength in strong electrical field, also, measure needed for device structure it is simple, just
In installing and using.
A kind of device 100 of electric field strength in measurement strong electrical field includes: to sound out point a charge body 120, multiple tensiometers
110, it sounds out point charge body 120 and places the spatial position for needing to measure electric field strength in the electric field, the drag hook of multiple tensiometers 110
It is fixedly connected by line of pull 111 with point charge body 120 is soundd out, the drag hook of tensiometer 110 and one end of line of pull 111 connect
It connects, the other end of line of pull 111 is attached with exploration point charge body 120 by modes such as adhesions, and tensiometer 110 is fixed on can
On mobile experiment frame, the pulling force size of tensiometer 110 can be adjusted by mobile experiment frame.In the present embodiment, tensiometer
110 quantity is six, and six tensiometers 110 are respectively arranged to sound out the space coordinates for putting charge body 120 as origin
In the corresponding positive negative direction of three reference axis.Above-mentioned six tensiometers 110 and the respectively setting in direction allow to accurate fast
Make to sound out the equilibrium state that point charge body 120 is zero in resultant force promptly.It is also convenient for the calculating of electric field force F, so that entire calculate
Process is simpler.Wherein, the dielectric constant of line of pull 111 should be as close possible to the dielectric constant 1 of air, to reduce test
Bring instrument error.
Further, in this embodiment souning out point charge body 120 is electrification sphere, the diameter for charging sphere is less than or equal to
2mm, the quantity of electric charge are 1 × 10-8C~1 × 10-2C.Use electrification sphere being capable of very accurate side as exploration point charge body 120
Just it is tested, the reason for this is that the shape of sphere all directions is all the same, is adjusted convenient for the pulling force to tensiometer 110,
It is allowed to balance, the diameter for charging sphere is smaller, and obtained test result gets over accurate and effective.Therefore, the diameter of above-mentioned electrification sphere
And the setting of the quantity of electric charge, so that can be very good to measure accurately and effectively electric field strength by above-mentioned apparatus.In other implementations
In example, exploration point charge body 120 of other shapes etc. can also be selected according to the actual needs, for example, the square etc. of electrification.
Further, in this embodiment tensiometer 110 is the high precision pull meter that least count is 0.001N.It is testing
It is middle to be operated using above-mentioned high precision pull meter, allow 110 pairs of the tensiometer pulling force for souning out point charge body 120 very smart
It really represents, so that the electric field force and electric field strength that are calculated are more accurate.
Further, in this embodiment the device 100 of the electric field strength in measurement strong electrical field further includes two laser autocollimatics
Straight instrument 130, and two Laser Autocollimators 130 are set to sound out point charge as the two of them of the space coordinates of origin
In reference axis, the laser that two Laser Autocollimators 130 issue is mutually perpendicular to.The setting of above-mentioned two Laser Autocollimator 130,
Two Laser Autocollimators 130 can be allowed rapidly and accurately to carry out to the spatial position where souning out point charge body 120
Quickly calibrated calibration, and it is easy to operate.In certain other embodiments, the number of Laser Autocollimator 130 can also be increased
Amount, and its position is adjusted.
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, above in conjunction in the embodiment of the present invention
Attached drawing, technical solution in the embodiment of the present invention clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention for usually describing and representing in attached drawing here is real
The component for applying example can be arranged and be designed with a variety of different configurations.
Therefore, the above detailed description to the embodiment of the present invention provided in the accompanying drawings is not intended to limit claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
In the description of the present invention, it should be noted that the orientation or positional relationship of the instructions such as term " on ", "lower" is base
In orientation or positional relationship shown in the drawings or the invention product using when the orientation or positional relationship usually put, only
It is that for the convenience of describing the present invention and simplifying the description, rather than the device or element of indication or suggestion meaning must have specifically
Orientation is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one
Connect to body；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be indirect by intermediary
It is connected, can be the connection inside two elements.For the ordinary skill in the art, on being understood with concrete condition
State the concrete meaning of term in the present invention.
Claims (4)
1. a kind of method of the electric field strength in measurement strong electrical field characterized by comprising
Point charge body balance will be soundd out by least three tensiometers in the state of closing strong electrical field needing to measure electric-field strength
The spatial position of degree records the initial tensile force value of each tensiometer respectively；
In the state of opening the strong electrical field, the pulling force size of at least three tensiometer is adjusted, makes the exploration point electricity
Lotus body is in equilibrium state in the spatial position for needing to measure electric field strength again, records each tensiometer respectively
Real-time value of thrust；And
The real-time value of thrust of each tensiometer and the difference of the initial tensile force value are calculated, pulling force difference is obtained, then
The point charge body of souning out is calculated in the electricity of the spatial position for needing to measure electric field strength according to multiple pulling force differences
Field force calculates the electric field strength of the spatial position further according to the electric field force；
The quantity of at least three tensiometer is six, and six tensiometers are respectively arranged at the exploration point charge body
In the corresponding positive negative direction of three reference axis for the space coordinates of origin.
2. the method for the electric field strength in measurement strong electrical field according to claim 1, which is characterized in that by the exploration point
Behind the spatial position for needing to measure electric field strength in the electric field of charge body balance in off position, to the exploration point charge
Whether body in the spatial position for needing to measure electric field strength carries out calibration calibration.
3. the method for the electric field strength in measurement strong electrical field according to claim 2, which is characterized in that opened in strong electrical field
Whether state after the exploration point charge weight is newly in equilibrium state, described needs to measure to the exploration point charge body
The spatial position of electric field strength carries out calibration calibration.
4. the method for the electric field strength in measurement strong electrical field according to claim 2 or 3, which is characterized in that the space
Position carries out calibration calibration by Laser Autocollimator.
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| CN204719142U (en) * | 2015-04-30 | 2015-10-21 | 江汉大学 | A kind of three-dimensional electric field strength meter |
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| CN201892707U (en) * | 2010-08-25 | 2011-07-06 | 重庆大学 | Measuring system for electric field |
| CN202838750U (en) * | 2012-06-08 | 2013-03-27 | 凌锡帮 | Micro mechanical quantity measuring instrument |
| CN103411603B (en) * | 2013-07-22 | 2015-08-05 | 中国人民解放军92537部队 | Electric-field sensor posture position measuring method in ship electric field protection |
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| CN102507091A (en) * | 2011-11-22 | 2012-06-20 | 天津大学 | Object mass center measuring device and method |
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