CN106556750A - Based on three-dimensional electric field measuring method mutually non-coplanar two-by-two - Google Patents
Based on three-dimensional electric field measuring method mutually non-coplanar two-by-two Download PDFInfo
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- CN106556750A CN106556750A CN201611007023.0A CN201611007023A CN106556750A CN 106556750 A CN106556750 A CN 106556750A CN 201611007023 A CN201611007023 A CN 201611007023A CN 106556750 A CN106556750 A CN 106556750A
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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
- G01R29/12—Measuring electrostatic fields or voltage-potential
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Abstract
The present invention relates to a kind of based on three-dimensional electric field measuring method mutually non-coplanar two-by-two.The method：First, by three it is mutually non-coplanar two-by-two and in space completely orthogonal one-dimensional electric field probe obtaining the electric field signal on tri- tunnel of X, Y, Z in space；Then, three in the space one-dimensional electric field probes are demarcated, corrects the sensitivity coefficient between three one-dimensional electric field probes；The three road electric field signals to gathering are amplified；Linear detection is carried out to amplifying tri- road electric field signals of Hou, and the number of opening obtains three-dimensional electric field intensity value again mean square summation to be carried out by tri- road electric field signals of a primary processor Dui；Finally, the three-dimensional electric field intensity level for obtaining is carried out into the actual electric field intensity value that linear fit obtains position to be measured by mathematical algorithm.Instant invention overcomes traditional one-dimensional electric field probe can only measure the defect of one-dimensional electric field, the three-dimensional measurement of space electric field can be realized well；With certain reference value and real economy benefit.
Description
Technical field
The present invention relates to it is a kind of based on three-dimensional electric field measuring method mutually non-coplanar two-by-two, it is specially a kind of to adopt three two
It is completely orthogonal in two mutually non-coplanar one-dimensional electric field probes and space to put the method for carrying out three-dimensional electric field in measurement space.
Background technology
With the expanding day of various places electrical network scale, the monitoring of electric field intensity safe operation and network operation people to electrical network
The safety of member is played a very important role.In electrical network field, can be to the inspection of high pressure equipment and power transmission line surrounding electric field intensity
Survey to do early warning to electric network operation personnel.And the relevant human body of combination country is set in power frequency electric field exposure limits or on-site actual situations
Threshold value, is monitored by electric field intensity, when the power frequency electric field in region residing for operating personnel exceedes the threshold value for arranging, reminds operation people
Member withdraws that electric field intensity is exceeded etc. to be not suitable for carrying out the region of long working in time, allows operating personnel to accomplish to prevent trouble before it happens,
Ensure personal safety the normal operation with power system.
Existing electric field measurement instrument is popped one's head in using one-dimensional electric field mostly currently on the market, can only measure the electricity in a direction
Field intensity, this is differed greatly with actual electric field value.Three-dimensional electric field sensor, only rests on laboratory stage at present and is difficult to reality
Border electric field measurement application, set forth herein the mutually non-coplanar two-by-two one-dimensional electric field sensor probe of use three it is completely orthogonal in space
Put, realize the method for three-dimensional measurement of electric field.
The content of the invention
Present invention aims to traditional one-dimensional electric field probe can only measure the deficiency of one-dimensional electric field, with reference to actual feelings
Condition, existing offer are a kind of based on three-dimensional electric field measuring method mutually non-coplanar two-by-two, and the method is by adopting three two-by-two mutually not
In coplanar one-dimensional electric field probe and space, orthogonal putting completely carrys out three-dimensional electric field in measurement space.
For achieving the above object, the technical scheme is that：It is a kind of to be measured based on three-dimensional electric field mutually non-coplanar two-by-two
Method, comprises the steps,
S1：By three it is mutually non-coplanar two-by-two and in space completely orthogonal one-dimensional electric field probe obtaining X, Y, Z in space
The electric field signal on three tunnels；
S2：Three in the space one-dimensional electric field probes are demarcated, the sensitivity between three one-dimensional electric field probes is corrected
Coefficient；
S3：The three road electric field signals to gathering are amplified；
S4：Linear detection is carried out to amplifying tri- road electric field signals of Hou, is carried out by tri- road electric field signals of a primary processor Dui
The number of opening obtains three-dimensional electric field intensity value again for mean square summation；
S5：The three-dimensional electric field intensity level for obtaining is carried out into the actual electric-field strength that linear fit obtains position to be measured by mathematical algorithm
Angle value.
In an embodiment of the present invention, the one-dimensional electric field probe is sheet metal, is shaped as rectangle or circle.
In an embodiment of the present invention, in step S1, it is the metal electricity according to electromagnetic coupled principle in electric field probe
Pole surface induction goes out the charge inducing with electric field same frequency to be measured change, obtains electric field signal.
In an embodiment of the present invention, step S2 to implement process as follows,
To put three two-by-two mutually non-coplanar and completely orthogonal one-dimensional electric field probe apply the electric field of X-direction, Y respectively
The electric field in direction, the electric field of Z-direction；Linear Quasi is carried out to each output of one-dimensional electric field probe under the electric field of different directions
Close, respectively obtaining each one-dimensional electric field probe to the electric field sensitivity coefficient of X-direction is：, obtain in the same manner
Each one-dimensional electric field probe to the electric field sensitivity coefficient of Y direction is：, each one-dimensional electric field probe
To the electric field sensitivity coefficient of Z-direction it is：, obtain following sensitivity matrix：
Wherein,Respectively X, Y, Z three-dimensional electric field intensity value,The response of one-dimensional electric field probe
Output.
In an embodiment of the present invention, in step S4, carrying out linear detection to amplification tri- road electric field signals of Hou is
Realized by a detecting circuit.
In an embodiment of the present invention, in step S5, to three-dimensional electric field intensity by way of using vector modulus
Value carries out the actual electric field intensity value that linear fit obtains position to be measured, and concrete formula is as follows：
Wherein,Respectively X, Y, Z three-dimensional electric field intensity value.
Compared to prior art, the invention has the advantages that：The present invention can only for traditional one-dimensional electric field probe
The deficiency of measurement one-dimensional electric field, with reference to practical situation, proposition is a kind of to use three one-dimensional electric-field sensors mutually non-coplanar two-by-two
The probe method for three-dimensional measurement put, realize electric field orthogonal in space is complete；Processing the interference between sensor all directions
Aspect is solved by following two modes, and one is the structure design in sensor（Popped one's head in two-by-two mutually not altogether using one-dimensional electric field
The method in face substantially reduces the interference that intercouples between three electric field probes）With circuit connection etc. aspect all consider sensor
Interference problem；Two is by being demarcated to these three electric field probes it is then determined that each electric field probe is three-dimensional in space
The sensitivity coefficient of direction of an electric field, substantially increases the certainty of measurement of electric field probe.
Description of the drawings
Fig. 1 is the flow chart that the present invention realizes electric field measurement method.
Fig. 2 is the structural representation of one-dimensional electric field probe disposing way of the present invention.
Fig. 3 is the schematic diagram of signal processing of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings, technical scheme is specifically described.
As Figure 1-3, the present invention's is a kind of based on three-dimensional electric field measuring method mutually non-coplanar two-by-two, including following step
Suddenly,
S1：By three it is mutually non-coplanar two-by-two and in space completely orthogonal one-dimensional electric field probe obtaining X, Y, Z in space
The electric field signal on three tunnels；
S2：Three in the space one-dimensional electric field probes are demarcated, the sensitivity between three one-dimensional electric field probes is corrected
Coefficient；
S3：The three road electric field signals to gathering are amplified；
S4：Linear detection is carried out to amplifying tri- road electric field signals of Hou, is carried out by tri- road electric field signals of a primary processor Dui
The number of opening obtains three-dimensional electric field intensity value again for mean square summation；
S5：The three-dimensional electric field intensity level for obtaining is carried out into the actual electric-field strength that linear fit obtains position to be measured by mathematical algorithm
Angle value.
The one-dimensional electric field probe is sheet metal, is shaped as rectangle or circle.In step S1, it is according to electromagnetism coupling
Close principle and the charge inducing changed with electric field same frequency to be measured is induced in the surface of metal electrode of electric field probe, obtain electric field
Signal.
Step S2 to implement process as follows,
To put three two-by-two mutually non-coplanar and completely orthogonal one-dimensional electric field probe apply the electric field of X-direction, Y respectively
The electric field in direction, the electric field of Z-direction；Linear Quasi is carried out to each output of one-dimensional electric field probe under the electric field of different directions
Close, respectively obtaining each one-dimensional electric field probe to the electric field sensitivity coefficient of X-direction is：, obtain in the same manner
Each one-dimensional electric field probe to the electric field sensitivity coefficient of Y direction is：, each one-dimensional electric field probe
To the electric field sensitivity coefficient of Z-direction it is：, obtain following sensitivity matrix：
Wherein,Respectively X, Y, Z three-dimensional electric field intensity value,The response of one-dimensional electric field probe
Output.
In step S4, it is to be realized by a detecting circuit to amplify tri- road electric field signals of Hou to carry out linear detection.
In step S5, linear fit is carried out to three-dimensional electric field intensity level by way of using vector modulus and is treated
The actual electric field intensity value that location is put, concrete formula are as follows：
Wherein,Respectively X, Y, Z three-dimensional electric field intensity value.
It is below the specific implementation process of the present invention.
As shown in figure 1, the present invention based on three-dimensional electric field measuring method mutually non-coplanar two-by-two, technical scheme is as follows：
（1）Electric field probe is copper sheet antenna, can be induced and electricity to be measured according to the surface of metal electrode of electromagnetic coupled principle probe
The charge inducing of field same frequency change.Then three mutual non-coplanar and completely orthogonal electric field probes two-by-two are placed in space
The numerical value of three-dimensional electric field in collection space.
（2）To put three two-by-two mutually non-coplanar and completely orthogonal one-dimensional electric field probe apply X-direction respectively
Electric field, the electric field of Y-direction, the electric field of Z-direction；Linear Quasi is carried out to each output of probe under the electric field of different directions
Close, respectively obtaining each electric field probe to the electric field sensitivity coefficient of X-direction is：, Y-axis is obtained in the same manner
The electric field sensitivity coefficient in direction is：, the electric field sensitivity coefficient of Z-direction is：.
To following sensitivity matrix：
WhereinFor three components of space electrical field,The response output of electric field probe.
（3）Due to measurement from long source farther out where the electrical signal of reaction that sensed of electric field probe it is too weak therefore will carry out not
With the amplification of degree, different amplifications can be selected.
（4）As shown in figure 3, the signal of telecommunication carries out detection using linear detector after amplifier, detection two in circuit
Pole pipe D1, is connected in feedback branch, and D2 is connected between amplifier A outfan and circuit output end.The circuit can overcome common little letter
Number diode detection circuit distortion is big, and efficiency of transmission is low and rectified signal of input need to be more than starting voltage（About 0.3V's consolidates
There is shortcoming）Even if input signal is much smaller than 0.3V, can also carry out linear detection, thus detection efficiency greatly can be improved.It is right
Three tunnel orthogonal signalling in space（Digital signal after A/D）Carry out vector modulus, fall this position total electric field strength.
（5）The three-dimensional total electric field strength value of this position is carried out curve fitting and obtains the reality of this position electric field intensity
Value.
It is below the specific embodiment of the present invention.
The structure of three-dimensional electric field sensor is shown in Figure 2, and according to embodiments of the present invention three are mutually non-coplanar two-by-two
The electric-field sensor part of one-dimensional electric field probe includes three one-dimensional electric field probes and a rectangular substrate（In view of measurement away from
From the size for being far longer than substrate, so the size of substrate itself can be what is ignored）, electric-field sensor part has three mutually not
Coplanar one-dimensional electric field probe composition, and ensure that these three electric field probes are completely orthogonal.These three electric field probes are respectively along three
X, Y in dimension rectangular coordinate system, Z-direction.For example specifically the concrete disposing way of electric field probe can be：By electric field probe list
Unit 1 is positioned over the perpendicular bisector position of the long side edge of substrate, and electric field probe unit 2 is positioned over the perpendicular bisector at the broadside edge of substrate
Position, electric field probe unit 3 are positioned in the extension of substrate perpendicular to Z axis.Three electric-field sensor units can by it is gluing,
The modes such as grafting, soldering are connected on substrate, while amplification treatment circuit, the detection being connected with electric field probe is included on substrate
The circuits such as circuit.The additional work(such as main processing block, wireless communication module, warning module and supply module can be included on substrate
Can module.
Measure is embodied as in terms of each electric field probe sensitivity coefficient demarcation as follows：The metallic plate being parallel to each other at a pair
Upper real making alive, produces uniform electric field of different sizes between metal sheet metal by adjusting the voltage swing between metallic plate.Can be with
By the little material of dielectric constant, such as paper shell, ceramics etc., being substantially secured to for electric field probe has been put by recited above
In the uniform electric field space for being applied.Rotating metallic plate applies uniform electric field to electric field probe from tri- directions of X, Y, Z respectively, leads to
Cross linear fit and determine that each electric field probe is respectively relative to the sensitivity coefficient in each direction,,,.Wherein,Represent electric field probe 1 for the sensitivity coefficient in x directions, it is assumed that X-direction
Electric field intensity be, the response value of electric field probe 1 is, sensitivity coefficient isThen meet.In the same manner can be with
Draw the formula of Y-axis and Z axis.Following sensitivity matrix may finally be obtained：
WhereinFor three components of space electrical field,The response output of electric field probe.Root
According to three components for being calculated electric field.
It is shown in Figure 3, the schematic diagram of the signal processing of the present invention.
As the sensing in electric field probe of the electric field of power frequency is fainter, the present invention is provided with different amplification gears,
To meet the amplification to the signal of telecommunication.Gear switches to soft handover, the multiple for selecting to amplify according to the size of field source.Consider
The characteristics of front end signal is faint, in addition to the different gears of application are amplified, also should selectivity on amplifier chip is selected
The chip of high gain that can be good.Effects of the middle electric capacity C for stopping direct current.The second level is detecting circuit, detection two in circuit
Pole pipe D1, is connected in feedback branch, and D2 is connected between amplifier outfan and detecting circuit outfan.The circuit can overcome common little
The distortion of signal diode detecting circuit is big, and efficiency of transmission is low and rectified signal of input need to be more than starting voltage（About 0.3V's
Inherent defect）Even if input signal is much smaller than 0.3V, can also carry out linear detection, thus detection efficiency greatly can be improved.
It is more than presently preferred embodiments of the present invention, all changes made according to technical solution of the present invention, produced function are made
During with scope without departing from technical solution of the present invention, protection scope of the present invention is belonged to.
Claims (6)
1. a kind of based on three-dimensional electric field measuring method mutually non-coplanar two-by-two, it is characterised in that：Comprise the steps,
S1：By three it is mutually non-coplanar two-by-two and in space completely orthogonal one-dimensional electric field probe obtaining X, Y, Z in space
The electric field signal on three tunnels；
S2：Three in the space one-dimensional electric field probes are demarcated, the sensitivity between three one-dimensional electric field probes is corrected
Coefficient；
S3：The three road electric field signals to gathering are amplified；
S4：Linear detection is carried out to amplifying tri- road electric field signals of Hou, is carried out by tri- road electric field signals of a primary processor Dui
Square summation open again radical sign obtain three-dimensional electric field intensity value；
S5：The three-dimensional electric field intensity level for obtaining is carried out into the actual electric-field strength that linear fit obtains position to be measured by mathematical algorithm
Angle value.
2. according to claim 1 based on three-dimensional electric field measuring method mutually non-coplanar two-by-two, it is characterised in that：Described one
Dimension electric field probe is sheet metal, is shaped as rectangle or circle.
3. according to claim 2 based on three-dimensional electric field measuring method mutually non-coplanar two-by-two, it is characterised in that：The step
In rapid S1, it is that the surface of metal electrode according to electromagnetic coupled principle in electric field probe is induced and electric field same frequency to be measured change
Charge inducing, obtains electric field signal.
4. according to claim 1 based on three-dimensional electric field measuring method mutually non-coplanar two-by-two, it is characterised in that：The step
Rapid S2 to implement process as follows,
To put three two-by-two mutually non-coplanar and completely orthogonal one-dimensional electric field probe apply the electric field of X-direction, Y respectively
The electric field in direction, the electric field of Z-direction；Linear Quasi is carried out to each output of one-dimensional electric field probe under the electric field of different directions
Close, respectively obtaining each one-dimensional electric field probe to the electric field sensitivity coefficient of X-direction is：, obtain in the same manner
Each one-dimensional electric field probe to the electric field sensitivity coefficient of Y direction is：, each one-dimensional electric field probe
To the electric field sensitivity coefficient of Z-direction it is：, obtain following sensitivity matrix：
Wherein,Respectively X, Y, Z three-dimensional electric field intensity value,The response of one-dimensional electric field probe is defeated
Go out.
5. according to claim 1 based on three-dimensional electric field measuring method mutually non-coplanar two-by-two, it is characterised in that：The step
In rapid S4, it is to be realized by a detecting circuit to amplify tri- road electric field signals of Hou to carry out linear detection.
6. according to claim 1 based on three-dimensional electric field measuring method mutually non-coplanar two-by-two, it is characterised in that：The step
In rapid S5, the actual electricity that linear fit obtains position to be measured is carried out by way of using vector modulus to three-dimensional electric field intensity level
Field intensity value, concrete formula are as follows：
Wherein,Respectively X, Y, Z three-dimensional electric field intensity value.
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| CN110441831A (en) * | 2019-09-06 | 2019-11-12 | 中国气象科学研究院 | A kind of integration no-manned plane three-dimensional electric field sounder and method |
| CN111679229A (en) * | 2020-04-24 | 2020-09-18 | 中国电力科学研究院有限公司 | Method and system for three-dimensional calibration of three-dimensional electric field measuring device |
| CN113933608A (en) * | 2021-11-12 | 2022-01-14 | 国网山东省电力公司高密市供电公司 | Power frequency electric field measurement system and working method |
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Application publication date: 20170405 |