CN104076195B - Non-contact electricity verification device based on vertical field intensity difference distribution curve matching - Google Patents
Non-contact electricity verification device based on vertical field intensity difference distribution curve matching Download PDFInfo
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Abstract
A non-contact electricity verification device based on vertical field intensity difference distribution curve matching comprises a signal collecting unit, a data analysis unit and a signal transmission unit used for signal transmission between the signal collection unit and the data analysis unit. The signal collection unit comprises a sensing module, a filter module, a collection module and a collection control module, wherein the sensing module is used for measuring voltage signals of measured points on a measured path, and the voltage signals are filtered by the filter module in a low-pass mode, then transmitted to the collection module for analog-digital conversion and transmitted out through the collection control module. The data analysis unit comprises a display module, a man-machine interaction module, a data storage module and a control module. The data analysis unit stores a standard map and generates a measurement curve by calculation according to actual measurement data, matching recognition is carried out on the measurement curve and the standard map, and the electrification situation is judged. Whether an object to be tested is powered on or not can be judged by detecting the electric field intensity of the measured path, the operation process is simplified, and detection accuracy is improved.
Description
Technical field
The invention belongs to charging equipment electrical verification technical field in electric system, particularly relate to a kind of based on vertical electric field strength difference distribution curve carry out Graphic Pattern Matching thus realize the Multi-purpose non-contact electricity tester of electrified body electrical verification.
Background technology
Electroscope is a kind of instrument whether charged for inspected object.According to national regulation, high voltage electroscope must have the circuit of electricity or have to provide on the equipment of corresponding conditions and test before use, confirms that high voltage electroscope work is carried out detecting the electrical verification of high-tension line after good again.Investigate the evidence of a case power mode and classify, electroscope can be divided into contact electroscope and non-contact type electricity checking device.Wherein, non-contact type electricity checking device can not directly contact with object under test due to during operation, becomes study hotspot gradually.The principle of work of non-contact type electricity checking device carries out threshold values triggering based on to the measurement of power-frequency electric field strength, thus whether judgment object is charged, sent electricity or without telecommunications breath, be widely used in the electrical verification of the dangerous objects such as high-tension electricity at present by signal designation.
The patent No. be 200910060796.9 Chinese invention patent disclose a kind of 1000kv extra-high voltage AC non-contact type electricity checking method and electroscope, this patent adopts the inductive electromagnetic method of capacitance induction principle to carry out electrical verification, electroscope carries out data acquisition with the frequency of 10KHz, using the electric field intensity value of working position that the collects reference value as electrical verification, carry out electrical verification according to the field intensity curve of space electric field and variation tendency, reflected the size of electric field by the sound and optic signal frequency speed of reporting to the police.Galvanoscopic alarming threshold value described in this patent is by repeatedly site test, choose according to the variation tendency of electric field and obtain, improve galvanoscopic usable range and accuracy to a certain extent, but because the charging equipment of transformer station and current conversion station is many, interference between charging equipment is larger, cause the formate field intensity around charging equipment complicated and changeable, larger interference may be subject to during electrical verification, therefore electroscope reference value and obtaining of alarming threshold value are easily subject to external interference, also can have an impact to accuracy.
Publication number is that the Chinese invention patent application of 101833046A discloses a kind of extra high-voltage AC non-contact distance-measuring type electricity testing method, the method adopts the electrical verification of parallel plate capacitor method principle of induction, its alarming threshold value is also the electric field intensity of being carried out data acquisition electroscope working position by electroscope with certain frequency, and the value obtained according to multi collect is chosen and formed; Then measure the distance between electroscope and wire, according to the curve of the field intensity of space electric field and variation tendency, the distance value obtained show that corresponding field intensity value is as electricity testing value; Finally alarming threshold value and electricity testing value are compared, reflect that whether testee is charged by the warning of sound and optic signal.The method is owing to actual measurement must go out distance value between electroscope and wire, and must make the distance of instrument and wire in an effective scope at this electricity-testing method of real work occasion, and this electrical verification process must take multiple measurements same transmission line of electricity, and operating process is comparatively numerous and diverse.
Summary of the invention
Easily external interference is subject to for reference value in non-contact type electricity checking device in prior art and obtaining of alarming threshold value, accuracy is not high, and need to take multiple measurements to same circuit the problem causing operating process comparatively numerous and diverse, the object of the present invention is to provide a kind of Multi-purpose non-contact electricity tester carrying out Graphic Pattern Matching based on vertical electric field strength difference distribution curve.
To achieve these goals, the present invention takes following technical solution:
Based on the Multi-purpose non-contact electricity tester of vertical strength different cloth Curve Matching, for carrying out charged identification to transmission line of electricity, comprising: signal gathering unit, data analysis unit and between described signal gathering unit and described data analysis unit, carry out the signal transmission unit of Signal transmissions, described signal gathering unit comprises the induction module, filtration module, acquisition module and the acquisition control module that connect successively, described induction module detects the voltage signal being positioned at each measurement point vertical interval in measuring route, after described filtration module low-pass filtering, deliver to described acquisition module and carry out analog to digital conversion, transferred out by described acquisition control module, described data analysis unit comprises the display module be connected to each other, human-computer interaction module, data memory module and control module, described data analysis unit stores the vertical strength different of the emulation as the standard diagram cloth curve emulating and obtain, and calculate generation experiment curv according to the data that signal gathering unit obtains, experiment curv and standard diagram are carried out match cognization, if the minimum value of experiment curv is greater than the minimum threshold values of setting, simultaneously, the simulation curve of the differing heights of experiment curv and corresponding types transmission line of electricity is carried out variance calculating, using simulation curve minimum with the variance yields of experiment curv in standard diagram as match curve, the variance of the field intensity difference of experiment curv and the field intensity difference of match curve is less than variance threshold values, then indicate electricity, when the variance of the field intensity difference of experiment curv and the field intensity difference of match curve is less than variance threshold values, and the minimum value of experiment curv is less than minimum threshold values, then represent not charged, display module display electrical verification result.
Technical scheme is more specifically, and described filtration module forms low-pass filter by common mode inductance two ends cross-over connection two electric capacity, electric capacity two voltage dependent resistor (VDR)s in parallel respectively at two ends.
Technical scheme is more specifically, and described acquisition module is made up of amplifying circuit, low-pass filter circuit, A/D convertor circuit, 50Hz filtering circuit, half-wave rectifying circuit and circuit of averaging.
Technical scheme is more specifically, described acquisition control module is connected with amplifying circuit with the low-pass filter circuit of described acquisition module respectively, changed the cutoff frequency of low-pass filter circuit by feedback control signal, change amplifying circuit to the enlargement factor of signal by feedback control signal.
Technical scheme is more specifically, the gain of described amplifying circuit is arranged according to gathered voltage signal scope, voltage data is divided into three regions: 0 ~ 10mv, 10mv ~ 100mv and 100mv ~ 2.5v, amplifying circuit gain corresponding to described three regions is respectively 128,16 and 1.
Technical scheme is more specifically, the signal transmission unit of described the present embodiment comprises electrooptic conversion module, optical fiber and photoelectric conversion module, described electrooptic conversion module carries out electro-optic conversion to the signal that signal gathering unit will transmit to data analysis unit and becomes light signal, then between signal gathering unit and data analysis unit, data transmission is carried out by optical fiber, before light signal imports data analysis unit into, light signal is carried out opto-electronic conversion and becomes electric signal by described photoelectric conversion module.
Technical scheme is more specifically, and described data analysis unit is computer or mobile intelligent terminal.
Technical scheme is more specifically, described measuring route is the straight line perpendicular to transmission line of electricity bearing of trend, described measuring route distance ground certain altitude, and put centered by transmission line of electricity center and extend to outside the phase conductor of power transmission line roadside to both sides, in measuring route, uniform intervals distributes some measurement points.
Technical scheme is more specifically, and described standard diagram comprises the emulation vertical strength different cloth curve of differing heights corresponding to dissimilar transmission line of electricity.
Technical scheme is more specifically, described standard diagram comprises the vertical electric field strength difference distribution curve corresponding from different electric pressure of measuring route below highly fixing emulation transmission line of electricity, the height of the emulation transmission line of electricity of standard diagram is consistent with the height of transmission line of electricity to be measured, simulated measurement path is consistent with the distance between ground and the distance between actual measurement path and ground, and emulation transmission line of electricity type is consistent with transmission line of electricity type to be measured.
Electroscopic device of the present invention arranges the data analysis unit storing standard diagram, the magnitude of voltage of each measurement point vertical interval in measuring route below transmission line of electricity is measured by sensing unit, data analysis unit calculates according to measured value and generates experiment curv, experiment curv and standard diagram are carried out matching primitives, thus obtains electrical verification result.By the electric field intensity difference detecting measurement point vertical interval in measuring route below transmission line of electricity, the present invention just can judge whether object under test has electricity, the formate field intensity avoided around larger the caused charging equipment of interference around transmission line of electricity between the charging equipment such as transformer station and current conversion station is complicated and changeable, and harmful effect is produced to electrical verification, it also avoid the repetitive measurement to transmission line of electricity, greatly simplify the operation course, improve accuracy of detection.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the embodiment of the present invention;
Fig. 2 is the circuit theory diagrams of induction module of the present invention;
Fig. 3 is the circuit theory diagrams of filtration module of the present invention;
Fig. 4 is the circuit block diagram of acquisition module of the present invention and acquisition control module;
Fig. 5 is the structured flowchart of data analysis unit of the present invention;
Fig. 6 is the display schematic diagram of embodiment of the present invention display module;
Fig. 7 is that electrical verification of the present invention detects schematic diagram.
Below in conjunction with accompanying drawing and each embodiment, the present invention is described in more detail.
Embodiment
As shown in Figure 1, the Multi-purpose non-contact electricity tester of the embodiment of the present invention comprises signal gathering unit 1, signal transmission unit 2 and data analysis unit 3, signal gathering unit 1 gathers the voltage signal on high-voltage charged body, data analysis unit 3 is sent to by signal transmission unit 2, analyzed according to signal data by data analysis unit 3, thus differentiate that whether electrified body is charged.
The signal gathering unit 1 of Multi-purpose non-contact electricity tester is made up of the induction module 1-1 connected successively, filtration module 1-2, acquisition module 1-3 and acquisition control module 1-4, when signal gathering unit 1 works, induction module 1-1 gathers the voltage signal of high-voltage charged body, after filtering after module 1-2 low-pass filtering, deliver to acquisition module 1-3 to carry out analog to digital conversion and become digital signal, be sent to signal transmission unit 2 by acquisition control module 1-4 and transmit.
Induction module 1-1 is for detecting the magnitude of voltage of each measurement point vertical interval in measuring route below power transmission line to be measured.As shown in Figure 2, induction module 1-1 gathers according to the voltage signal of electromagnetic induction principle to electrified body, by the pressure drop at measuring resistance R two ends, calculates the magnitude of voltage in space residing for induction module.Induction module 1-1 of the present invention can adopt the differential type field strength measurement sensor that market is sold.
Filtration module 1-2 is used for carrying out filtering high frequency spurs to the voltage signal received, as shown in Figure 3, the filtration module 1-2 of the present embodiment forms low-pass filter by common mode inductance L two ends cross-over connection two electric capacity C1, C2, high frequency spurs is removed, the electric capacity at two ends respectively two voltage dependent resistor (VDR) R1, R2 in parallel can stop the high pressure of moment to pass through, and prevents the damage caused instrument of being such as struck by lightning.
Acquisition module 1-3 is used for the voltage signal that acquisition process induction module 1-1 senses, as shown in Figure 4, the acquisition module 1-3 of the present embodiment is made up of amplifying circuit, low-pass filter circuit, A/D convertor circuit, 50Hz filtering circuit, half-wave rectifying circuit and circuit of averaging.Amplifying circuit amplifies the voltage signal sensed, secondary filtering is carried out through low-pass filter circuit through amplifying signal, filtering high-frequency signal, again improve the precision of signal, signal after filtering carries out analog to digital conversion by A/D convertor circuit and is converted to digital signal, digital signal carries out third time filtering through 50Hz filtering circuit, other compositions of filtering, extract power frequency component, power frequency component eliminates negative value through half-wave rectifying circuit, then circuit of averaging is sent to, circuit of averaging stores the sampled value of setting quantity, then the mean value of these sampled values is calculated, thus obtain a stable power frequency component value, finally this signal is delivered to acquisition control module 1-4.
Data for controlling the operation of acquisition module 1-3, and are sent to data analysis unit 3 by signal transmission unit 2 by RS232 interface by acquisition control module 1-4.The acquisition control module of the present embodiment adopts model to be the single-chip microcomputer of C8051F3XX, acquisition control module 1-4 is connected with the low-pass filter circuit of acquisition module 1-3, by feedback control signal 1, change the cutoff frequency of low-pass filter circuit thus the clutter of filtering different frequency, improve the stability of signal; Acquisition control module 1-4 is connected with the amplifying circuit of acquisition module 1-3 simultaneously, by feedback control signal 2, changes amplifying circuit to the enlargement factor of signal, thus improves the conversion accuracy of A/D convertor circuit, improve the resolution of AD.More specifically, the present embodiment arranges the gain of amplifying circuit according to gathered voltage signal scope, the voltage data of collection is divided into three regions, be respectively 0 ~ 10mv, 10mv ~ 100mv and 100mv ~ 2.5v, amplifying circuit gain corresponding to these three regions is respectively 128,16 and 1, and corresponding relation is as shown in the table:
| Voltage range | 0～10mv | 10mv～100mv | 100mv～2.5v |
| Amplifier gain | 128 | 16 | 1 |
Time acquisition control module 1-4 receives the signal value of zones of different, judge the scope belonging to voltage, by feedback control signal 2, control the gain size of amplifying circuit, improve the resolution of AD.
The signal transmission unit 2 of the present embodiment comprises electrooptic conversion module 2-1, optical fiber 2-2 and photoelectric conversion module 2-3.Electrooptic conversion module 2-1 carries out electro-optic conversion to the signal that signal gathering unit 1 will transmit to data analysis unit 3, then between signal gathering unit 1 and data analysis unit 3, data transmission is carried out by optical fiber 2-2, before the light signal of optical fiber 2-2 transmission imports data analysis unit 3 into, light signal is carried out opto-electronic conversion by photoelectric conversion module 2-3, is then sent to data analysis unit 3.The signal transmission unit 2 of the present embodiment is made up of (light/electricity) signal conversion module and optical fiber, data between sensing unit 1 and data analysis unit 3 are transmitted by RS232 agreement, the electric signal that sensing unit 1 detects is converted to light signal, other interference in data transmission procedure can be reduced, improve transmission range, optical fiber plays a part to transmit data.
After data analysis unit 3 receives data, the data in the data collected and simulation data base are analyzed, judge charged situation.As shown in Figure 5, data analysis unit 3 of the present invention comprise be connected to each other display module 3-1, human-computer interaction module 3-2, data memory module 3-3, process chip 3-4.Data analysis unit 3 of the present invention can adopt computer, or mobile intelligent terminal, such as, be provided with the panel computer of operating system, smart mobile phone or personal digital assistant (PDA).The display module 3-1 of data analysis unit 3 is used for display analysis result; Human-computer interaction module 3-2 is used for operator's input operation order, and human-computer interaction module 3-2 can be mouse, keyboard, or touch display screen; Data memory module 3-3 detects data, electrical verification result and the emulated data figure as electrical verification standard diagram for storing; Process chip 3-4 is used for sending instruction to signal gathering unit 1, to control the operation of electroscopic device, judge according to the data analysis collected simultaneously, and via display module display electrical verification result, in process chip 3-4, be provided with the electrical verification calculating sub module for carrying out computational analysis to data.
To adopt panel computer, as data analysis unit 3, the present invention will be further described below.The display screen of panel computer is the display module of the present embodiment data analysis unit 3, also be the human-computer interaction module of the present embodiment simultaneously, the hard disk of panel computer is data memory module, panel computer stores single tower single loop, common-tower double-return road and two-way walk abreast three kinds of electric transmission line hot-line time certain limit in the emulated data figure of horizontal field strength distribution of differing heights, when carrying out actual measurement, measurement range must be consistent with the simulation scale of aforementioned three kinds of transmission lines of electricity.As shown in Figure 6, when electrical verification detects, following 4 regions of display on panel computer: model selection district I, display field II, Drawing zone III and control zone IV.In model selection district I, user selects the transmission line of electricity identical with electrical verification actual conditions, as power transmission line to be measured be common-tower double-return road power transmission line time, corresponding pattern need be selected in mode selective region, electroscopic device is analyzed according to the charged situation of actual conditions to corresponding transmission line of electricity, input minimum threshold values A and variance threshold values B simultaneously, if the minimum value of the experiment curv that the measured value collected according to sensing unit 1 is drawn is greater than minimum threshold values A, simultaneously, the simulation curve of the differing heights under experiment curv and this pattern carries out variance calculating, using simulation curve minimum with the variance yields of experiment curv in standard diagram as match curve, when the variance of the field intensity difference of experiment curv and the field intensity difference of match curve is less than variance threshold values B, then indicate electricity.The electric field value of display field II real-time display measurement point when measuring.Drawing zone III can draw out the electric field curve in measurement range simultaneously when measuring; The measurement data be kept in data analysis unit 3 can be adjusted back in control zone IV, and analyzes whether the transmission line of electricity of its correspondence is charged.
The course of work of the present invention is as follows:
After start, first the acquisition control module 1-4 of electroscopic device detects the state of acquisition module 1-3, if acquisition module 1-3 is normal, and when not receiving the operating instruction of data analysis unit 3, relay indicating light is Chang Liang, and when receiving the operating instruction of data analysis unit 3, relay indicating light glimmers with 0.5Hz; If when acquisition module 1-3 is abnormal, rub-out signal with the frequency scintillation of 48Hz, and is sent to data analysis unit 3 by signal transmission unit 2 by relay indicating light.
With reference to Fig. 7, when carrying out electrical verification detection, measurement point is distributed in (in Fig. 7, direction shown in arrow x is direction of measurement) on the straight line perpendicular to power transmission line bearing of trend, this straight line is measuring route a, measuring route a distance ground certain altitude, and put centered by wire center and extend to outside the phase conductor of power transmission line roadside to both sides, some measurement point uniform intervals are distributed on measuring route a.Along arrow x direction, measurement point is measured, the induction module 1-1 of sensing unit 1 induces the magnitude of voltage at each measurement point vertical interval d two ends in measuring route according to electromagnetic induction principle, then by filtration module 1-2 filtering, signal is outputted to acquisition module 1-3, acquisition module 1-3 is by inner secondary filtering and amplification and analog to digital conversion, simulating signal is converted to digital signal and outputs to acquisition control module 1-4, signal is sent to data analysis unit 3 by optical fiber by acquisition control module 1-4, data analysis unit 3 is by the operation of the whole electroscopic device of RS232 protocol integrated test system, and store the emulated data figure of the measuring route of dissimilar transmission line of electricity under corresponding height, the vertical electric field strength that data analysis unit 3 calculates measurement point vertical interval corresponding according to the magnitude of voltage at the measurement point vertical interval d two ends collected is poor, the vertical strength different cloth curve (experiment curv) of measuring route is generated according to the vertical electric field strength mathematic interpolation measured, experiment curv actual measurement obtained carries out variance calculating with the transmission line of electricity of the respective type in database and the simulation curve of corresponding measuring route, using simulation curve minimum with the variance yields of experiment curv in standard diagram as match curve, when the variance of the field intensity difference of experiment curv and the field intensity difference of match curve is less than variance threshold values B, and when the minimum value of experiment curv is greater than minimum threshold values A, then represent that this transmission line of electricity has electricity.Variance threshold values B determines according to measuring empirical value under actual standard environment, and minimum threshold A determines with reference to the dependent thresholds in high voltage display device national standard, is 15% of the rated voltage field intensity mean value of match curve.
When transmission line of electricity height is determined, the distribution curve of the vertical field intensity difference of transmission line of electricity downward vertical on the straight line (measuring route) of the distance ground certain altitude of transmission line of electricity bearing of trend is determined by the electric pressure of power transmission line, namely, when the electric pressure of power transmission line is determined, below it, the distribution curve of the vertical field intensity difference of the measuring route of distance ground certain altitude is confirmable.The present invention is first by the mode of simulation calculation, simulate the vertical strength different cloth curve of differing heights under various transmission line of electricity, different electric pressure, using the simulation curve obtained as the standard diagram being used for contrasting, be stored in the data analysis unit 3 of electroscopic device; Then measured by each measurement point of sensing unit 1 in corresponding measuring route, the voltage measuring value at measurement point vertical interval two ends in measuring route is sent to data analysis unit 3, the electrical verification calculating sub module of data analysis unit 3 is by calculating the vertical strength different cloth curve of transmission line of electricity to be measured, i.e. experiment curv, and the experiment curv that actual measurement is obtained be stored in the standard diagram that the emulation in data analysis unit obtains and carry out match cognization, thus judge that whether transmission line of electricity charged.
Electrical verification calculating sub module match cognization step is: the data length determining experiment curv, and to experiment curv and the smoothing filtering process of standard diagram; The long process such as the simulation curve of experiment curv and standard diagram to be carried out; Left and right translation is carried out to experiment curv, the simulation curve of experiment curv and standard diagram is carried out Waveform Matching, make the waveform of experiment curv and simulation curve in standard diagram and phase place consistent; Variance calculating is carried out to the simulation curve of experiment curv and standard diagram, calculate the difference of each simulation curve and experiment curv in standard diagram successively, using simulation curve minimum with the variance yields of experiment curv in standard diagram as match curve, when the variance of the field intensity difference of experiment curv and the field intensity difference of match curve is less than variance threshold values, and the minimum value of experiment curv is greater than minimum threshold values, then think this electric transmission line hot-line to be measured, the virtual voltage of power transmission line to be measured is the magnitude of voltage corresponding with this match curve; When the variance of the field intensity difference of experiment curv and the field intensity difference of match curve is less than variance threshold values, and the minimum value of experiment curv is less than minimum threshold values, then think that this transmission line of electricity to be measured is not charged; When the variance of the field intensity difference of experiment curv and the field intensity difference of match curve is greater than variance threshold values, then think experiment curv not in the scope of standard diagram, this experiment curv is invalid, need re-start measurement.
More specifically, according to the data length of experiment curv, the method for first difference post-sampling can be adopted long process such as the simulation curve of standard diagram carry out, makes the simulation curve of experiment curv and standard diagram isometric.During translation measurement curve, find out the mistiming Δ t of the crest of each simulation curve in the crest of experiment curv and standard diagram, thus determine the phase differential of experiment curv and each simulation curve, according to the maximum time difference Δ t of the crest of experiment curv and the crest of each simulation curve
maxand the length N of data determines maximum range of translation MAX=Δ t
max/ TN, T are wherein voltage signal cycles, curve waveform are alignd each for experiment curv left and right translation 1 ~ MAX point.Euclidean distance Furthest Neighbor is adopted to calculate the difference of each simulation curve and experiment curv in standard diagram.Standard diagram of the present invention comprises the vertical electric field strength difference distribution curve corresponding from different electric pressure of measuring route below highly fixing emulation transmission line of electricity, the height of the emulation transmission line of electricity of standard diagram is consistent with the height of transmission line of electricity to be measured, simulated measurement path is consistent with the distance between ground and the distance between actual measurement path and ground, and emulation transmission line of electricity type is consistent with transmission line of electricity type to be measured.
Electroscopic device of the present invention achieves the electrical verification of contactless ultra high-tension transmission line, ensure that the safety of staff, and in electroscopic device, store the emulation distribution curve of the vertical field intensity difference of transmission line of electricity, field strength measurement is carried out by the measurement point in corresponding situation, the experiment curv calculated according to measured value and simulation curve are carried out match cognization, can remove from prior art and need to take multiple measurements numerous and diverse step that just can obtain reference value to same circuit, and standard diagram of the present invention is obtained by emulation experiment, the interference of external environment can be reduced, improve accuracy.
Really, technical conceive of the present invention is not limited in above-described embodiment, many different concrete schemes can also be obtained according to design of the present invention, such as, previous embodiment adopts optical fiber to carry out data transmission between sensing unit and data analysis unit, but also can adopt as the communications such as WiFi, GPRS, bluetooth carry out data transmission, or the serial communication mode such as USB carries out data transmission, such as these change and equivalent transformation all should be included within the scope described in claim.
It will be appreciated by those skilled in the art that, the module described in conjunction with embodiment disclosed herein and circuit, can realize with electronic hardware, computer software or the combination of the two, such as, acquisition module can be made up of 6 hardware circuits realizing corresponding function, or the function of low-pass filter circuit, 50Hz filtering circuit, half-wave rectifying circuit and circuit of averaging adopts (single-chip microcomputer) software programming to realize.In order to the interchangeability of hardware and software is clearly described, generally describe the composition of each example in the above description according to function.These functions perform with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can to each specifically should be used for time differently realize described function, but this realization should not thought and exceeds scope of the present invention.
The software module that the module, the circuit that describe in conjunction with embodiment disclosed herein can directly use hardware, processor to perform, or the combination of the two is implemented.Software module can be placed in the known any other forms of storage medium of random access memory (RAM), internal memory, ROM (read-only memory) (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technical field.
Claims (10)
1. based on the Multi-purpose non-contact electricity tester of vertical strength different cloth Curve Matching, for carrying out charged identification to transmission line of electricity, it is characterized in that, comprising: signal gathering unit, data analysis unit and between described signal gathering unit and described data analysis unit, carry out the signal transmission unit of Signal transmissions;
Described signal gathering unit comprises the induction module, filtration module, acquisition module and the acquisition control module that connect successively, described induction module detects the voltage signal being positioned at each measurement point vertical interval in measuring route, after described filtration module low-pass filtering, deliver to described acquisition module and carry out analog to digital conversion, transferred out by described acquisition control module;
Described data analysis unit comprises the display module be connected to each other, human-computer interaction module, data memory module and process chip, described data analysis unit stores the vertical strength different of the emulation as the standard diagram cloth curve emulating and obtain, and calculate generation experiment curv according to the data that signal gathering unit obtains, experiment curv and standard diagram are carried out match cognization, if the minimum value of experiment curv is greater than the minimum threshold values of setting, simultaneously, the simulation curve of the differing heights of experiment curv and corresponding types transmission line of electricity is carried out variance calculating, using simulation curve minimum with the variance yields of experiment curv in standard diagram as match curve, the variance of the field intensity difference of experiment curv and the field intensity difference of match curve is less than variance threshold values, then indicate electricity, when the variance of the field intensity difference of experiment curv and the field intensity difference of match curve is less than variance threshold values, and the minimum value of experiment curv is less than minimum threshold values, then represent not charged, display module display electrical verification result.
2. the Multi-purpose non-contact electricity tester based on vertical strength different cloth Curve Matching according to claim 1, it is characterized in that: described filtration module forms low-pass filter by common mode inductance two ends cross-over connection two electric capacity, electric capacity two voltage dependent resistor (VDR)s in parallel respectively at two ends.
3. the Multi-purpose non-contact electricity tester based on vertical strength different cloth Curve Matching according to claim 1, is characterized in that: described acquisition module is made up of amplifying circuit, low-pass filter circuit, A/D convertor circuit, 50Hz filtering circuit, half-wave rectifying circuit and circuit of averaging.
4. the Multi-purpose non-contact electricity tester based on vertical strength different cloth Curve Matching according to claim 3, it is characterized in that: described acquisition control module is connected with amplifying circuit with the low-pass filter circuit of described acquisition module respectively, changed the cutoff frequency of low-pass filter circuit by feedback control signal, change amplifying circuit to the enlargement factor of signal by feedback control signal.
5. the Multi-purpose non-contact electricity tester based on vertical strength different cloth Curve Matching according to claim 4, it is characterized in that: the gain of described amplifying circuit is arranged according to gathered voltage signal scope, voltage data is divided into three region: 0 ~ 10mv, 10mv ~ 100mv and 100mv ~ 2.5v, amplifying circuit gain corresponding to described three regions is respectively 128,16 and 1.
6. the Multi-purpose non-contact electricity tester based on vertical strength different cloth Curve Matching according to claim 1, it is characterized in that: described signal transmission unit comprises electrooptic conversion module, optical fiber and photoelectric conversion module, described electrooptic conversion module carries out electro-optic conversion to the signal that signal gathering unit will transmit to data analysis unit and becomes light signal, then between signal gathering unit and data analysis unit, data transmission is carried out by optical fiber, before light signal imports data analysis unit into, light signal is carried out opto-electronic conversion and becomes electric signal by described photoelectric conversion module.
7. the Multi-purpose non-contact electricity tester based on vertical strength different cloth Curve Matching according to claim 1, is characterized in that: described data analysis unit is computer or mobile intelligent terminal.
8. the Multi-purpose non-contact electricity tester based on vertical strength different cloth Curve Matching according to claim 1, it is characterized in that: described measuring route is the straight line perpendicular to transmission line of electricity bearing of trend, described measuring route distance ground certain altitude, and put centered by transmission line of electricity center and extend to outside the phase conductor of power transmission line roadside to both sides, in measuring route, uniform intervals distributes some measurement points.
9. the Multi-purpose non-contact electricity tester based on vertical strength different cloth Curve Matching according to claim 1, is characterized in that: described standard diagram comprises the emulation vertical strength different cloth curve of differing heights corresponding to dissimilar transmission line of electricity.
10. the Multi-purpose non-contact electricity tester based on vertical strength different cloth Curve Matching according to claim 1 or 9, it is characterized in that: described standard diagram comprises the vertical electric field strength difference distribution curve corresponding from different electric pressure of measuring route below highly fixing emulation transmission line of electricity, the height of the emulation transmission line of electricity of standard diagram is consistent with the height of transmission line of electricity to be measured, simulated measurement path is consistent with the distance between ground and the distance between actual measurement path and ground, and emulation transmission line of electricity type is consistent with transmission line of electricity type to be measured.
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| CN104459285B (en) * | 2014-12-01 | 2017-07-14 | 国家电网公司 | A kind of electrical verification system and method based on unmanned plane |
| CN105448035A (en) * | 2015-12-28 | 2016-03-30 | 云南电网有限责任公司电力科学研究院 | High-voltage line proximity early warning method and device |
| CN106199222A (en) * | 2016-08-17 | 2016-12-07 | 众芯汉创（北京）科技有限公司 | A kind of contactless near field region electricity-testing method and device |
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| CN106353581B (en) * | 2016-09-27 | 2021-03-12 | 重庆理工大学 | High-voltage electroscope based on electro-optic effect |
| CN106970258B (en) * | 2017-04-01 | 2019-06-21 | 西安光远电气有限责任公司 | The electrification recognition methods of ultra-high-tension power transmission line |
| CN107741521B (en) * | 2017-11-30 | 2023-06-09 | 福州大学 | Three-phase system non-contact high-voltage electrification judging and indicating device and method thereof |
| CN108872690B (en) * | 2018-07-04 | 2024-05-14 | 桂林市华谊智测科技有限责任公司 | Non-contact type induction sheet and test pencil |
| CN113933367B (en) * | 2021-09-30 | 2023-12-22 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | Pulp pH value detecting system |
| CN113933368B (en) * | 2021-09-30 | 2023-12-26 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | Pulp pH value detecting system |
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Inventor after: Li Jiwen Inventor after: Wang Fengfei Inventor after: Li Dexing Inventor after: Liu Jin Inventor after: Zhang Zhiqiang Inventor after: Dong Wenjuan Inventor after: Chen Xianyong Inventor after: Xu Jian Inventor after: Zhong Mingliang Inventor after: He Yiping Inventor after: Wang Sheng Inventor after: Yu Long Inventor after: Zhang Yanchun Inventor after: Zhang Bo Inventor before: Liu Jin Inventor before: Zhang Zhiqiang Inventor before: Dong Wenjuan Inventor before: Li Jiwen Inventor before: Zhong Mingliang Inventor before: Xu Jian Inventor before: Chen Xianyong Inventor before: Wang Sheng |
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Effective date of registration: 20151224 Address after: 830011 No. 155 West Jiangsu Road, the Xinjiang Uygur Autonomous Region, Urumqi Patentee after: XINJIANG POWER TRANSMISSION AND TRANSFORMATION ENGINEERING Co. Patentee after: XI'AN GUANGYUAN ELECTRIC Co.,Ltd. Address before: 710065 Xi'an science and technology zone, Shaanxi high tech Road No. five, No. 22 Patentee before: XI'AN GUANGYUAN ELECTRIC Co.,Ltd. Patentee before: XINJIANG POWER TRANSMISSION AND TRANSFORMATION ENGINEERING Co. |
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