CN103344818B - Non-contact type electricity checking device and electricity-testing method - Google Patents
Non-contact type electricity checking device and electricity-testing method Download PDFInfo
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- CN103344818B CN103344818B CN201310245198.5A CN201310245198A CN103344818B CN 103344818 B CN103344818 B CN 103344818B CN 201310245198 A CN201310245198 A CN 201310245198A CN 103344818 B CN103344818 B CN 103344818B
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- 238000012360 testing method Methods 0.000 title claims abstract description 89
- 230000005611 electricity Effects 0.000 title claims abstract description 18
- 230000005684 electric field Effects 0.000 claims abstract description 129
- 238000001514 detection method Methods 0.000 claims abstract description 14
- 238000012545 processing Methods 0.000 claims abstract description 14
- 230000006698 induction Effects 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims description 14
- 238000001914 filtration Methods 0.000 claims description 4
- 238000012795 verification Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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Abstract
The invention discloses a kind of non-contact type electricity checking device and electricity-testing method, belong to field of electrical equipment.Described electroscope comprises: induction module, for detecting the electric field intensity of object under test; Range finder module, for detecting the distance of electroscope to object under test; Processing module, for the electric field intensity recorded to the Distance geometry of described object under test according to the described electroscope that records, judges that whether described object under test is charged.The present invention is by detecting the electric field intensity of object under test and the electroscope distance to object under test, according to the corresponding relation of distance with electric field intensity, judge that whether object under test is charged, the impact avoided because of surrounding environment causes accuracy in detection on the low side, improve accuracy of detection, eliminate potential safety hazard.
Description
Technical field
The present invention relates to field of electrical equipment, particularly a kind of non-contact type electricity checking device and electricity-testing method.
Background technology
Electroscope is a kind of instrument for checking object whether charged.According to electrical verification pattern, electroscope can be divided into contact electroscope and non-contact type electricity checking device.
Wherein, non-contact type electricity checking device is a kind of electroscope, and it does not directly contact with object under test, is widely used in the electrical verification of the dangerous objects such as hi-line.Existing a kind of non-contact type electricity checking device, be made up of parts such as electric-field sensor, treatment circuit and signal designations, whether this non-contact type electricity checking device, by detecting the electric field intensity of object under test, is checked object under test charged, has been sent electricity or cease without telecommunications by signal designation.
Realizing in process of the present invention, inventor finds that prior art at least exists following problem:
Because the object existed around object under test also can produce electric field, (road as normally several in hi-line is set up together, measure a road hi-line whether charged time, other hi-lines also can produce electric field), even if when therefore object under test is not charged, sensor also can detect electric field, thus the accuracy that impact detects, there is potential safety hazard.
Summary of the invention
Even if during in order to solve that in prior art, object under test is not charged, sensor also can detect electric field, thus the accuracy that impact detects, there is the problem of potential safety hazard, embodiments provide a kind of non-contact type electricity checking device and electricity-testing method.Described technical scheme is as follows:
On the one hand, embodiments provide a kind of non-contact type electricity checking device, described electroscope comprises:
Induction module, for detecting the electric field intensity of object under test;
Described induction module comprises electric-field sensor;
Range finder module, for detecting the distance of described electroscope to described object under test;
Processing module, for the electric field intensity recorded to the Distance geometry of described object under test according to the described electroscope that records, judges that whether described object under test is charged;
Described electroscope also comprises: cover on the metallic sheath outside described electric-field sensor, and described metallic sheath is provided with the hole of the Signal reception scope for limiting described electric-field sensor;
The upper bush that described metallic sheath comprises lower sleeve and can slide along described lower sleeve, one end of described lower sleeve and one end of described upper bush are slidably connected, and the other end of described upper bush is provided with described hole, and the other end of described lower sleeve is provided with described electric-field sensor.
In the another kind of implementation of the embodiment of the present invention, described range finder module comprises laser range finder.
In the another kind of implementation of the embodiment of the present invention, described electroscope also comprises: driving arrangement, for driving described upper bush to slide along described lower sleeve, to change the described Signal reception scope of described electric-field sensor;
Correspondingly, described processing module also for, according to the distance of described electroscope to described object under test, control described driving arrangement and adjust the described Signal reception scope of described electric-field sensor to predetermined value.
In the another kind of implementation of the embodiment of the present invention, described electroscope also comprises: alarm module, for when described object under test is charged, carries out sound and light alarm.
In the another kind of implementation of the embodiment of the present invention, described electroscope also comprises: be located at the transport module between described induction module and described processing module, and described transport module comprises: follow circuit, filtering circuit, rectification circuit and analog to digital converter.
On the other hand, the embodiment of the present invention additionally provides a kind of non-contact type electricity checking method, and described method comprises:
Detect the electric field intensity of object under test;
Detect the distance of electroscope to described object under test;
According to the electric field intensity that the described electroscope recorded records to the Distance geometry of described object under test, judge that whether described object under test is charged;
The electric field intensity of described detection object under test comprises: adopt electric-field sensor to detect the electric field intensity of object under test, described electric-field sensor is covered with a metallic sheath, and described metallic sheath is provided with the hole of the Signal reception scope for limiting described electric-field sensor;
The upper bush that described metallic sheath comprises lower sleeve and can slide along described lower sleeve, one end of described lower sleeve and one end of described upper bush are slidably connected, and the other end of described upper bush is provided with described hole, and the other end of described lower sleeve is provided with described electric-field sensor.
In a kind of implementation of the embodiment of the present invention, before the electric field intensity of described detection object under test, described method also comprises: adjustment electric field reception scope is to predetermined value.
The beneficial effect that the technical scheme that the embodiment of the present invention provides is brought is:
By detecting the electric field intensity of object under test and the electroscope distance to object under test, judge that whether object under test band is electric, avoid the electric field of the object generation existed around object under test, on the impact of the electric field intensity of detection object under test, improve accuracy of detection, eliminate potential safety hazard.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the non-contact type electricity checking device that the embodiment of the present invention one provides;
Fig. 2 is the structural representation of the metallic sheath of the electric-field sensor outside that the embodiment of the present invention one provides;
Fig. 3 is the non-contact type electricity checking method process flow diagram that the embodiment of the present invention two provides.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
Embodiment one
Embodiments provide a kind of non-contact type electricity checking device, this electroscope is particularly useful for carrying out electrical verification to extra-high voltage objects under test such as hi-lines, and see Fig. 1-2, this electroscope comprises:
Induction module 101, for detecting the electric field intensity of object under test;
Range finder module 102, for detecting the distance of electroscope to object under test;
Processing module 103, for the electric field intensity recorded to the Distance geometry of object under test according to the electroscope that records, judges that whether object under test is charged.
Particularly, processing module 103 is according to the corresponding relation of distance with electric field intensity, obtain with the electroscope recorded to default electric field intensity corresponding to the distance of object under test, the electric field intensity relatively recorded and the size of default electric field intensity, when the electric field ratio recorded preset electric field intensity large time, obtaining judged result is, object under test is charged, when the electric field ratio recorded presets electric field intensity hour, obtaining judged result is that object under test is not charged.
Preferably, above-mentioned induction module 101 can comprise electric-field sensor 111.Electric-field sensor adopts capacitive sensing design.For hi-line, hi-line produces alternating electric field after the pressurizing, and the electric-field sensor be in alternating electric field can produce induced charge, thus coating-forming voltage, according to the electric field intensity obtaining object under test of voltage.
In order to prevent rainwater from making transducer sensitivity decline, electric-field sensor can adopt semisphere smooth jacket.
Preferably, above-mentioned range finder module 102 can comprise laser range finder.
Due to reality detect time, the electric jamming that other objects produce can be there is around object under test, as detect multiloop hi-line Zhong mono-tunnel whether charged time, the electric field that other loops produce can have an impact to detection, even if detected loop is actual is uncharged, the electric field intensity that electric-field sensor detects is also still larger.In order to avoid this interference, we can according to the relation of voltage U and electric field strength E: E=U/d, and wherein d is the position of electric field intensity measuremenrt and the distance of object under test, wherein, for hi-line, U is fixing, therefore can obtain the corresponding relation of distance and electric field intensity.
Therefore, after range finder module 102 records distance, we can find default electric field intensity from above-mentioned corresponding relation, and it is also little that the electric field ratio recorded when induction module 101 presets electric field intensity, then illustrate that hi-line is not charged, otherwise high-tension line electrified.
Wherein, processing module 103 can comprise single-chip microcomputer.
Further, this electroscope also comprises: be located at the transport module 104 between induction module 101 and processing module 103, and this transport module 104 comprises: follow circuit, filtering circuit, rectification circuit and analog to digital converter.Electric-field sensor exports power frequency ac voltage signal, and this signal is followed through follow circuit and carried out filtering after forward bias, is then converted to direct current through rectification circuit, then by analog to digital converter input single-chip microcomputer.
Further, this electroscope also comprises: alarm module 105, for when object under test is charged, carries out sound and light alarm.
Particularly, alarm module 105 can comprise: hummer and light emitting diode.Processing module 103, when judging object under test band point, controls alarm module 104 and carries out sound and light alarm.
Further, this electroscope also comprises: cover on the metallic sheath 112 outside electric-field sensor, and metallic sheath 112 is provided with the hole of the Signal reception scope for limiting electric-field sensor.
Further, above-mentioned metallic sheath 112 comprises: lower sleeve and the upper bush that can slide along lower sleeve, one end of lower sleeve and one end of upper bush are slidably connected, and the other end of upper bush is provided with hole, and the other end of lower sleeve is provided with electric-field sensor.By slip upper bush, the distance of electric-field sensor to hole can be changed, thus change the Signal reception scope of electric-field sensor.By controlling the Signal reception scope of electric-field sensor, making the interference suffered by electric-field sensor less, thus making testing result more accurate.
See Fig. 2, so that outer metal sleeve 112 on electric-field sensor 111 to have circular aperture 113, object under test is hi-line 114 is example, electroscope is far away to the distance of hi-line, the Signal reception scope of electric-field sensor is larger, Signal reception scope is used: electric-field sensor 111 is linked to be ray with the every bit of aperture edge on metallic sheath 112, and the length of hi-line that wherein two rays intercept represents.Be d when recording the distance of electroscope to hi-line, the predetermined value of default Signal reception scope is a, when the diameter of aperture is r, can calculate the length x of metallic sheath, because a/d=r/x, so x=dr/a.
Preferably, metallic sheath 112 can being arranged the scale for representing length, after the length x calculating metallic sheath 112, can regulate according to the scale on metallic sheath 112, making metallic sheath 112 length equal x.
Further, this device also comprises: driving arrangement, for driving upper bush to slide along lower sleeve, to change the Signal reception scope of electric-field sensor;
Processing module also for, according to the distance of electroscope to object under test, control driving arrangement adjustment electric-field sensor 111 Signal reception scope to predetermined value.Processing module can adopt aforesaid way, calculates the value of x, and the value of x is set to predetermined value.
The embodiment of the present invention is by detecting the electric field intensity of object under test and the electroscope distance to object under test, judge that whether object under test band is electric, avoid the electric field of the object generation existed around object under test, on the impact of the electric field intensity of detection object under test, improve accuracy of detection, eliminate potential safety hazard.
Embodiment two
Embodiments provide a kind of non-contact type electricity checking method, the method is particularly useful for carrying out electrical verification to extra-high voltage objects under test such as hi-lines, and see Fig. 2, the method comprises:
Step 201: the electric field intensity detecting object under test;
Step 202: detect the distance of electroscope to object under test;
Step 203: the electric field intensity recorded to the Distance geometry of object under test according to the electroscope recorded, judges that whether object under test is charged.
Particularly, according to the corresponding relation of distance with electric field intensity, obtain with the electroscope recorded to default electric field intensity corresponding to the distance of object under test, the electric field intensity relatively recorded and the size of default electric field intensity, when the electric field ratio recorded preset electric field intensity large time, obtaining judged result is, object under test is charged, when the electric field ratio recorded presets electric field intensity hour, obtaining judged result is that object under test is not charged.
Particularly, electric field intensity can be detected by electric-field sensor.Distance can be detected by laser range finder.
Due to reality detect time, the electric jamming that other objects produce can be there is around object under test, as detect multiloop hi-line Zhong mono-tunnel whether charged time, the electric field that other loops produce can have an impact to detection, even if detected loop is actual is uncharged, the electric field intensity that electric-field sensor detects is also still larger.In order to avoid this interference, we can according to the relation of voltage U and electric field strength E: E=U/d, and wherein d is the position of electric field intensity measuremenrt and the distance of object under test, wherein, for hi-line, U is fixing, therefore can obtain the corresponding relation of distance and electric field intensity.
Therefore, after recording distance, we can find default electric field intensity from above-mentioned corresponding relation, and when the electric field ratio recorded, to preset electric field intensity also little, then illustrate that hi-line is not charged, otherwise high-tension line electrified.
When high pressure object is charged, carry out sound and light alarm.
Further, before the electric field intensity detecting object under test, the method also comprises: adjustment electric field reception scope is to predetermined value.
Such as, when adopting electric-field sensor to detect the electric field intensity of object under test, at electric-field sensor upper cover metallic sheath, metallic sheath is provided with the hole of the Signal reception scope for limiting electric-field sensor.Metallic sheath one end is provided with hole, and the other end is provided with electric-field sensor.By changing the length of metallic sheath, the distance of electric-field sensor to hole can be changed, thus change the Signal reception scope of electric-field sensor.By controlling the Signal reception scope of electric-field sensor, making suffered interference less, thus making testing result more accurate.
See Fig. 2, so that outer metal sleeve 112 on electric-field sensor 111 to have circular aperture 113, object under test is hi-line 114 is example, electroscope is far away to the distance of hi-line, the Signal reception scope of electric-field sensor is larger, Signal reception scope is used: on electric-field sensor and metallic sheath, the every bit of aperture edge is linked to be ray, and the length of hi-line that wherein two rays intercept represents.Be d when recording the distance of electroscope to hi-line, default Signal reception scope is a, when the diameter of aperture is r, can calculate the length x of metallic sheath, because a/d=r/x, so x=dr/a.
The embodiment of the present invention is by detecting the electric field intensity of object under test and the electroscope distance to object under test, judge that whether object under test band is electric, avoid the electric field of the object generation existed around object under test, on the impact of the electric field intensity of detection object under test, improve accuracy of detection, eliminate potential safety hazard.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. a non-contact type electricity checking device, is characterized in that, described electroscope comprises:
Induction module, for detecting the electric field intensity of object under test;
Described induction module comprises electric-field sensor;
Range finder module, for detecting the distance of described electroscope to described object under test;
Processing module, for the electric field intensity recorded to the Distance geometry of described object under test according to the described electroscope that records, judges that whether described object under test is charged;
Described electroscope also comprises: cover on the metallic sheath outside described electric-field sensor, and described metallic sheath is provided with the hole of the Signal reception scope for limiting described electric-field sensor;
The upper bush that described metallic sheath comprises lower sleeve and can slide along described lower sleeve, one end of described lower sleeve and one end of described upper bush are slidably connected, and the other end of described upper bush is provided with described hole, and the other end of described lower sleeve is provided with described electric-field sensor.
2. electroscope according to claim 1, is characterized in that, described range finder module comprises laser range finder.
3. electroscope according to claim 1, is characterized in that, described electroscope also comprises: driving arrangement, for driving described upper bush to slide along described lower sleeve, to change the described Signal reception scope of described electric-field sensor;
Correspondingly, described processing module also for, according to the distance of described electroscope to described object under test, control described driving arrangement and adjust the described Signal reception scope of described electric-field sensor to predetermined value.
4. electroscope according to claim 1, is characterized in that, described electroscope also comprises: alarm module, for when described object under test is charged, carries out sound and light alarm.
5. electroscope according to claim 1, it is characterized in that, described electroscope also comprises: be located at the transport module between described induction module and described processing module, and described transport module comprises: follow circuit, filtering circuit, rectification circuit and analog to digital converter.
6. a non-contact type electricity checking method, is characterized in that, described method comprises:
Detect the electric field intensity of object under test;
Detect the distance of electroscope to described object under test;
According to the electric field intensity that the described electroscope recorded records to the Distance geometry of described object under test, judge that whether described object under test is charged;
The electric field intensity of described detection object under test comprises: adopt electric-field sensor to detect the electric field intensity of object under test, described electric-field sensor is covered with a metallic sheath, and described metallic sheath is provided with the hole of the Signal reception scope for limiting described electric-field sensor;
The upper bush that described metallic sheath comprises lower sleeve and can slide along described lower sleeve, one end of described lower sleeve and one end of described upper bush are slidably connected, and the other end of described upper bush is provided with described hole, and the other end of described lower sleeve is provided with described electric-field sensor.
7. method according to claim 6, is characterized in that,
Before the electric field intensity of described detection object under test, described method also comprises: adjustment electric field reception scope is to predetermined value.
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| CN201310245198.5A CN103344818B (en) | 2013-06-19 | 2013-06-19 | Non-contact type electricity checking device and electricity-testing method |
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Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105092986B (en) * | 2014-05-08 | 2018-05-18 | 中国银联股份有限公司 | A kind of POS machine has space field strength assay method |
| CN104849533B (en) * | 2015-06-08 | 2017-01-18 | 国网山东省电力公司平原县供电公司 | High-voltage electroscope |
| CN105137161A (en) * | 2015-07-17 | 2015-12-09 | 恒同(中国)有限公司 | Digital composite functional high-voltage electroscope |
| CN106908651A (en) * | 2015-12-23 | 2017-06-30 | 上海新岸线电子技术有限公司 | A kind of induction type surveys method for electrically and surveys electric installation |
| CN105487023A (en) * | 2016-01-21 | 2016-04-13 | 晋江知保企业管理咨询有限公司 | Power frequency magnetic field detection device |
| CN105629083A (en) * | 2016-01-21 | 2016-06-01 | 晋江知保企业管理咨询有限公司 | Power frequency electric field detection device |
| CN106291081B (en) * | 2016-08-17 | 2023-11-21 | 众芯汉创（北京）科技有限公司 | Far field electric testing system and method |
| CN106681347A (en) * | 2016-12-30 | 2017-05-17 | 易瓦特科技股份公司 | Gesture controllable wireless charge detecting UAV |
| CN107015052A (en) * | 2017-06-08 | 2017-08-04 | 国网安徽省电力公司蚌埠供电公司 | Measurement loop electrocution-proof alarming device |
| CN107192873A (en) * | 2017-07-27 | 2017-09-22 | 北京中科飞龙传感技术有限责任公司 | Non-contact voltage transducer system |
| CN109683028B (en) * | 2018-12-25 | 2021-08-10 | 上海安平静电科技有限公司 | Electrostatic detection method and device |
| CN110632371B (en) * | 2019-09-30 | 2022-05-31 | 深圳供电局有限公司 | Charged non-contact detection device and method for object surface |
| CN114113752B (en) * | 2021-10-14 | 2023-07-18 | 广西电网有限责任公司南宁供电局 | Intelligent high-voltage electroscope |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CA1199386A (en) * | 1983-07-25 | 1986-01-14 | Marius Cloutier | Proximity detector of electric lines, and method |
| CN201035092Y (en) * | 2007-05-08 | 2008-03-12 | 王春胜 | Freely telescopic clectroscope |
| CN101487858B (en) * | 2009-02-20 | 2010-11-10 | 国网电力科学研究院 | 1000kV extra-high voltage AC non-contact type electricity checking method and apparatus |
| CN201611364U (en) * | 2010-03-10 | 2010-10-20 | 国网电力科学研究院 | 1000kV extra-high voltage alternating-current non-contact multichannel range-measuring type electroscope |
| CN102401695A (en) * | 2011-08-29 | 2012-04-04 | 哈尔滨市赛维计算机技术服务有限责任公司 | Hot metal detector under high temperature vapour environment |
| CN102645573B (en) * | 2012-05-11 | 2015-05-13 | 西安电子科技大学 | Noncontact ultrahigh voltage electricity detector |
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