CN104457590A - Conductor sag monitoring device based on laser distance measurement and monitoring methods - Google Patents
Conductor sag monitoring device based on laser distance measurement and monitoring methods Download PDFInfo
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- CN104457590A CN104457590A CN201410854383.9A CN201410854383A CN104457590A CN 104457590 A CN104457590 A CN 104457590A CN 201410854383 A CN201410854383 A CN 201410854383A CN 104457590 A CN104457590 A CN 104457590A
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Abstract
The invention provides a conductor sag monitoring device based on laser distance measurement. The monitoring device comprises a laser distance measurement sensor hung on a conductor. The laser distance measurement sensor is used for measuring the distance between the conductor and the ground. The monitoring device can further comprise an angle sensor, the angle between a laser pulse and a perpendicular line perpendicular to the ground is measured through the angle sensor, and the perpendicular distance between the conductor and the ground is calculated. The invention further provides two methods for using the conductor sag monitoring device based on the laser distance measurement. The distance between the conductor and the ground and the conductor sag are measured with the laser distance measurement methods, the measurement accuracy is high, the implement methods are simple, and the collected data are accurate and reliable.
Description
Technical field
The present invention relates to a kind of wire sag monitoring device based on laser ranging.
The invention still further relates to the monitoring method of two kinds of uses based on the wire sag monitoring device of laser ranging.
Background technology
Conducting wire sag refers on smooth ground, when adjacent two electric pole upper conductor suspension heights are identical, and the vertical range of line between wire minimum point and two hitch points; If the hitch point height of wire on adjacent two electric poles is not identical, now, by appearance two sags in a span, namely two hitch points to the wire minimum point of wire has two vertical ranges, is called maximum sag and minimum sag.Maximum sag appears at and where is determined on a case-by-case basis, and the maximum arc sag wherein between the common adjacent shaft tower discrepancy in elevation being no more than to 10%, appears at span central authorities.From the definition of conducting wire sag, be in fact also the monitoring to wire distance to the ground to the monitoring of conducting wire sag.
Wire distance to the ground is the leading indicator of line design and operation, is related to the security of operation of circuit, therefore must control in the scope of design code.Change due to circuit operating load and surrounding environment all can cause the change of wire distance to the ground, and too small wire distance to the ground not only can cause the accident hidden danger, also limit the transport capacity of circuit, particularly in scissors crossing and the intensive location of the signs of human habitation.But in operational process, required wire over the ground safe distance may be damaged, and its reason has following points:
1) newly-built below circuit or near it or reconstructed buildings, as road, telecommunication line or low-voltage circuit etc.;
2) because repair work moves shaft tower or change the size of shaft tower, and the length of insulator chain is changed;
3) shaft tower is crooked, wire pine and not adjust or wire elongated through long luck row;
4) because adjacent two pin tower inside conductor loadings are uneven, wire slides in suspension clamp.
At present check whether wire distance to the ground meets designing requirement, there is polling period long by manual type, can not the problem of real-time online inspection.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide a kind of wire sag monitoring device based on laser ranging and monitoring method, needing manual type inspection for solving wire distance to the ground in prior art, there is polling period long, can not real-time online check problem.
For achieving the above object and other relevant objects, the invention provides a kind of wire sag monitoring device based on laser ranging, it comprises the laser range sensor hung on wire, laser range sensor comprises laser emitting module, and the pulse of laser emitting module Emission Lasers is to optical lens, and optical lens comprises the lens of level crossing towards laser emitting module and laser emitting module dorsad, laser range sensor also comprises Laser feedback receiver module, laser reflection receiver module, Laser feedback receiver module receives the laser pulse from flat mirror reflects, laser reflection receiver module receives the laser pulse from reflection from lens, laser pulse is equal to the distance of laser reflection receiver module from lens with laser pulse to the distance of Laser feedback receiver module from level crossing, Laser feedback receiver module is connected with the beginning timing end of time to digital converter chip, laser reflection receiver module is connected with the end timing end of time to digital converter chip, time to digital converter chip is connected with microprocessor.
Preferably, wire sag monitoring device also comprises the angular transducer fixing with laser range sensor, and angular transducer signal transmission is to microprocessor, and the measuring basis line of angular transducer is parallel with the laser pulse that laser emitting module is launched.
Preferably, the shell of laser range sensor is spheroidal.
Preferably, laser range sensor is provided with the wire through hole passed for wire running through laser range sensor.
For achieving the above object and other relevant objects, the present invention also provides a kind of method using the above-mentioned wire sag monitoring device based on laser ranging to monitor, and comprises the following steps:
1) laser emitting module of laser range sensor is to the ground launch laser pulse be positioned at below wire;
2) laser pulse is through optical lens, wherein beam of laser pulse is by flat mirror reflects, enters Laser feedback receiver module, then after opto-electronic conversion and amplification filtering rectification, be converted into the beginning timing end that level signal sends into time to digital converter chip, microprocessor obtains and starts timer time t
1; Another bundle laser pulse is through lens, and continued to move ahead by after the lens compression angle of divergence, until there is diffuse reflection behind arrival ground, after fraction of laser light pulse returns through reflection from lens to laser reflection receiver module, again after opto-electronic conversion and amplification filtering rectification, be converted into the end timing end that level signal sends into time to digital converter chip, microprocessor obtains and terminates timer time t
2;
3) microprocessor calculates wire distance to the ground L
0=Vt/2, wherein V is the speed of the laser pulse that laser emitting module sends, and t comes and goes the time needed for lens and ground, t=t for laser pulse
2-t
1;
4) microprocessor will calculate the wire distance to the ground L of gained
0compared with the allowed band of setting, as wire distance to the ground L
0exceed the allowed band of setting, then send early warning signal.
For achieving the above object and other relevant objects, the present invention also provides the another kind of method using the above-mentioned wire sag monitoring device based on laser ranging to monitor, and comprises the following steps:
1) laser emitting module of laser range sensor is to the ground launch laser pulse be positioned at below wire;
2) laser pulse is through optical lens, wherein beam of laser pulse is by described flat mirror reflects, enter Laser feedback receiver module, again after opto-electronic conversion and amplification filtering rectification, be converted into the beginning timing end that level signal sends into time to digital converter chip, microprocessor obtains and starts timer time t
1; Another bundle laser pulse is through lens, and continued to move ahead by after the lens compression angle of divergence, until there is diffuse reflection behind arrival ground, after fraction of laser light pulse returns through reflection from lens to laser reflection receiver module, again after opto-electronic conversion and amplification filtering rectification, be converted into the end timing end that level signal sends into time to digital converter chip, microprocessor obtains and terminates timer time t
2;
3) microprocessor calculates wire distance to the ground L
0=Vt/2, wherein V is the speed of the laser pulse that laser emitting module sends, and t comes and goes the time needed for lens and ground, t=t for laser pulse
2-t
1;
4) angular transducer measure laser pulse and perpendicular to ground perpendicular line between angle θ, and be transferred to microprocessor, microprocessor calculates wire vertical range L=L over the ground
0cos θ=Vtcos θ/2;
5) microprocessor by calculate gained wire over the ground vertical range L compared with the allowed band of setting, as wire over the ground vertical range L exceed the allowed band of setting, then send early warning signal.
As mentioned above, the present invention is based on wire sag monitoring device and the monitoring method of laser ranging, there is following beneficial effect:
Should based on the wire sag monitoring device of laser ranging and monitoring method, adopt laser distance measurement method to come measure traverse line distance to the ground and conducting wire sag, measuring accuracy is high, implementation method is simple, accurately and reliably, reasonable in design, meets the technical requirement that arc sag of wire of power transmission line is measured to image data; This monitoring device and method improve the level that wire distance to the ground is measured, and ensure that transmission line of electricity runs safely and reliably, thus ensure electrical production safety, contribute to the automatization level that raising line corridor is safeguarded, decrease the working strength of line attendant; The rig-site utilization of this monitoring device, can improve the equipment routing inspection ability of grid company, improves line quality and the circuit operation maintenance automatization level of relay protection devices, ensures that transmission facility reliablely and stablely runs, thus ensures electrical production safety.
Accompanying drawing explanation
Fig. 1 is shown as the workflow schematic diagram of the laser range sensor of the wire sag monitoring device that the present invention is based on laser ranging.
Fig. 2 is shown as the laser range sensor of the wire sag monitoring device based on laser ranging shown in Fig. 1 and the structural representation of angular transducer combination.
Element numbers explanation
1 laser range sensor
11 laser emitting modules
12 optical lens
121 level crossings
122 lens
13 Laser feedback receiver modules
14 laser reflection receiver modules
15 time to digital converter chips
151 start timing end
152 terminate timing end
16 microprocessors
17 shells
18 wire through holes
2 wires
3 angular transducers
4 ground
Embodiment
By particular specific embodiment, embodiments of the present invention are described below, person skilled in the art scholar the content disclosed by this instructions can understand other advantages of the present invention and effect easily.
Refer to Fig. 1 to Fig. 2.Notice, structure, ratio, size etc. that this instructions institute accompanying drawings illustrates, content all only in order to coordinate instructions to disclose, understand for person skilled in the art scholar and read, and be not used to limit the enforceable qualifications of the present invention, therefore the not technical essential meaning of tool, the adjustment of the modification of any structure, the change of proportionate relationship or size, do not affecting under effect that the present invention can produce and the object that can reach, still all should drop on disclosed technology contents and obtain in the scope that can contain.Simultaneously, quote in this instructions as " on ", D score, "left", "right", " centre " and " one " etc. term, also only for ease of understanding of describing, and be not used to limit the enforceable scope of the present invention, the change of its relativeness or adjustment, under changing technology contents without essence, when being also considered as the enforceable category of the present invention.
As shown in Figure 1, the invention provides a kind of wire sag monitoring device based on laser ranging, it comprises the laser range sensor 1 hung on wire 2, laser range sensor 1 comprises laser emitting module 11, and the pulse of laser emitting module 11 Emission Lasers is to optical lens 12, and optical lens 12 comprises the lens 122 of level crossing 121 towards laser emitting module 11 and laser emitting module 11 dorsad, laser range sensor 1 also comprises Laser feedback receiver module 13, laser reflection receiver module 14, Laser feedback receiver module 13 receives the laser pulse reflected from level crossing 121, laser reflection receiver module 14 receives the laser pulse reflected from lens 122, laser pulse is equal from the distance of lens 122 to laser reflection receiver module 14 with laser pulse from the distance of level crossing 121 to Laser feedback receiver module 13, Laser feedback receiver module 13 is connected with the beginning timing end 151 of time to digital converter chip 15, laser reflection receiver module 14 is connected with the end timing end 152 of time to digital converter chip 15, time to digital converter chip 15 is connected with microprocessor 16.
As shown in Figure 2, the shell 17 of above-mentioned laser range sensor 1 can be spheroidal, avoid laser range sensor 1 and have most advanced and sophisticated position, effectively avoiding causing damage to laser range sensor 1 because producing corona, making laser range sensor 1 be applicable to being operated on UHV (ultra-high voltage) wire.
As shown in Figure 2, laser range sensor 1 is provided with the wire through hole 18 passed for wire 2 running through laser range sensor 1.By wire 2 is passed wire through hole 18, laser range sensor 1 is made to be installed on wire 2, this reasonable in design, easy for installation.
The monitoring method using the above-mentioned wire sag monitoring device based on laser ranging to monitor, comprises the following steps:
1) laser emitting module 11 of laser range sensor 1 is to the ground 4 Emission Lasers pulse be positioned at below wire 2;
2) laser pulse is when through optical lens 12, wherein beam of laser pulse is reflected by level crossing 121, enter Laser feedback receiver module 13, again after opto-electronic conversion and amplification filtering rectification, be converted into the beginning timing end 151 that level signal sends into time to digital converter chip 15, microprocessor 16 obtains and starts timer time t
1; Another bundle laser pulse is through lens 122, and continue to move ahead after being compressed the angle of divergence by lens 122, until there is diffuse reflection after arriving ground 4, laser reflection receiver module 14 is reflexed to through lens 122 after fraction of laser light pulse returns, again after opto-electronic conversion and amplification filtering rectification, be converted into the end timing end 152 that level signal sends into time to digital converter chip 15, microprocessor 16 obtains and terminates timer time t
2;
3) microprocessor 16 calculates wire distance to the ground L
0=Vt/2, wherein V is the speed of the laser pulse that laser emitting module 11 sends, and t comes and goes lens 122 and the time needed for ground 4, t=t for laser pulse
2-t
1;
4) microprocessor 16 will calculate the wire distance to the ground L of gained
0compared with the allowed band of setting, as wire distance to the ground L
0exceed the allowed band of setting, then send early warning signal.
Adopt above-mentioned wire sag monitoring device and monitoring method, can the various landform of Real-Time Monitoring, wire distance to the ground in landforms situation, and when wire distance to the ground exceeds the allowed band of setting, send early warning signal, improve real-time and the reliability of the monitoring of wire distance to the ground.
As shown in Figure 2, wire sag monitoring device also can comprise the angular transducer 3 fixing with laser range sensor 1, angular transducer 3 signal transmission is to microprocessor 16, and the measuring basis line of angular transducer 3 is parallel with the laser pulse that laser emitting module 11 is launched.
The above-mentioned monitoring method that the wire sag monitoring device of angular transducer 3 is housed, comprises the following steps:
1) laser emitting module 11 of laser range sensor 1 is to the ground 4 Emission Lasers pulse be positioned at below wire 2;
2) laser pulse is when through optical lens 12, wherein beam of laser pulse is reflected by level crossing 121, enter Laser feedback receiver module 13, again after opto-electronic conversion and amplification filtering rectification, be converted into the beginning timing end 151 that level signal sends into time to digital converter chip 15, microprocessor 16 obtains and starts timer time t
1; Another bundle laser pulse is through lens 122, and continue to move ahead after being compressed the angle of divergence by lens 122, until there is diffuse reflection after arriving ground 4, laser reflection receiver module 14 is reflexed to through lens 122 after fraction of laser light pulse returns, again after opto-electronic conversion and amplification filtering rectification, be converted into the end timing end 152 that level signal sends into time to digital converter chip 15, microprocessor 16 obtains and terminates timer time t
2;
3) microprocessor 16 calculates wire distance to the ground L
0=Vt/2, wherein V is the speed of the laser pulse that laser emitting module 11 sends, and t comes and goes lens 122 and the time needed for ground 4, t=t for laser pulse
2-t
1;
4) angular transducer 3 measure laser pulse and perpendicular to ground perpendicular line between angle θ, and be transferred to microprocessor 16, microprocessor 16 calculates wire vertical range L=L over the ground
0cos θ=Vtcos θ/2;
5) microprocessor 16 by calculate gained wire over the ground vertical range L compared with the allowed band of setting, as wire over the ground vertical range L exceed the allowed band of setting, then send early warning signal.
Above-mentioned wire distance to the ground L
0be wire 2 relative to the distance of ground 4 along laser pulse transmit direction, wire over the ground vertical range L is wire 2 relative to the distance of ground 4 along the direction vertical with ground 4.
In time using laser range sensor 1 measure traverse line distance to the ground, due to the impact of wind-engaging, wire 2 has windage yaw and brandishing, laser range sensor 1 itself can produce deflection, the distance that laser range sensor 1 is measured is not perpendicular to ground 4, and the distance that very possible laser range sensor 1 is measured favours ground 4, therefore use angle sensor 3 is needed to measure the angle of deviation of the laser pulse that laser range sensor 1 sends, and by calculating, the distance correction measured by laser range sensor 1 is on the direction vertical with ground 4, to ensure the impact that the measurement result of wire sag monitoring device is not subject to wire 2 windage yaw and waves.
The present invention compared with the prior art, the measuring method of laser ranging is not only adopted to carry out direct measure traverse line distance to the ground, but also by the problem of inclination that angle measurement method is revised wire 2 windage yaw and waved and produce, enable the measurement result of this monitoring device reflect wire 2 wire distance to the ground under various regimes and sag exactly.
In sum, the present invention is based on wire sag monitoring device and the monitoring method of laser ranging, laser distance measurement method is adopted to come measure traverse line distance to the ground and conducting wire sag, measuring accuracy is high, implementation method is simple, accurately and reliably, reasonable in design, meets the technical requirement that arc sag of wire of power transmission line is measured to image data; This monitoring device and method improve the level that wire distance to the ground is measured, and ensure that transmission line of electricity runs safely and reliably, thus ensure electrical production safety, contribute to the automatization level that raising line corridor is safeguarded, decrease the working strength of line attendant; The rig-site utilization of this monitoring device, can improve the equipment routing inspection ability of grid company, improves line quality and the circuit operation maintenance automatization level of relay protection devices, ensures that transmission facility reliablely and stablely runs, thus ensures electrical production safety.So the present invention effectively overcomes various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all without prejudice under spirit of the present invention and category, can modify above-described embodiment or changes.Therefore, such as have in art usually know the knowledgeable do not depart from complete under disclosed spirit and technological thought all equivalence modify or change, must be contained by claim of the present invention.
Claims (6)
1. based on a wire sag monitoring device for laser ranging, it is characterized in that: it comprises the laser range sensor hung on wire, described laser range sensor comprises laser emitting module, and the pulse of described laser emitting module Emission Lasers is to optical lens, and described optical lens comprises the lens of level crossing towards described laser emitting module and described laser emitting module dorsad, described laser range sensor also comprises Laser feedback receiver module, laser reflection receiver module, described Laser feedback receiver module receives the laser pulse from described flat mirror reflects, described laser reflection receiver module receives the laser pulse from described reflection from lens, described laser pulse is equal to the distance of laser reflection receiver module from described lens with described laser pulse to the distance of Laser feedback receiver module from described level crossing, described Laser feedback receiver module is connected with the beginning timing end of time to digital converter chip, described laser reflection receiver module is connected with the end timing end of time to digital converter chip, described time to digital converter chip is connected with microprocessor.
2. the wire sag monitoring device based on laser ranging according to claim 1, it is characterized in that: described wire sag monitoring device also comprises the angular transducer fixing with described laser range sensor, described angular transducer signal transmission is to described microprocessor, and the measuring basis line of described angular transducer is parallel with the laser pulse that described laser emitting module is launched.
3. the wire sag monitoring device based on laser ranging according to claim 1, is characterized in that: the shell of described laser range sensor is spheroidal.
4. the wire sag monitoring device based on laser ranging according to claim 1, is characterized in that: described laser range sensor is provided with the wire through hole passed for wire running through described laser range sensor.
5. the method using the wire sag monitoring device based on laser ranging described in claim 1 to monitor, is characterized in that, comprise the following steps:
1) laser emitting module of described laser range sensor is to the ground launch laser pulse be positioned at below wire;
2) laser pulse is through described optical lens, wherein beam of laser pulse is by described flat mirror reflects, enter described Laser feedback receiver module, again after opto-electronic conversion and amplification filtering rectification, be converted into the beginning timing end that level signal sends into described time to digital converter chip, described microprocessor obtains and starts timer time t
1; Another bundle laser pulse is through described lens, and continued to move ahead by after the described lens compression angle of divergence, until there is diffuse reflection behind arrival ground, through described reflection from lens extremely described laser reflection receiver module after fraction of laser light pulse returns, again after opto-electronic conversion and amplification filtering rectification, be converted into the end timing end that level signal sends into described time to digital converter chip, described microprocessor obtains and terminates timer time t
2;
3) described microprocessor calculates wire distance to the ground L
0=Vt/2, wherein V is the speed of the laser pulse that laser emitting module sends, and t comes and goes the time needed for lens and ground, t=t for laser pulse
2-t
1;
4) described microprocessor will calculate the wire distance to the ground L of gained
0compared with the allowed band of setting, as wire distance to the ground L
0exceed the allowed band of setting, then send early warning signal.
6. the method using the wire sag monitoring device based on laser ranging described in claim 2 to monitor, is characterized in that, comprise the following steps:
1) laser emitting module of described laser range sensor is to the ground launch laser pulse be positioned at below wire;
2) laser pulse is through described optical lens, wherein beam of laser pulse is by described flat mirror reflects, enter described Laser feedback receiver module, again after opto-electronic conversion and amplification filtering rectification, be converted into the beginning timing end that level signal sends into described time to digital converter chip, described microprocessor obtains and starts timer time t
1; Another bundle laser pulse is through described lens, and continued to move ahead by after the described lens compression angle of divergence, until there is diffuse reflection behind arrival ground, through described reflection from lens extremely described laser reflection receiver module after fraction of laser light pulse returns, again after opto-electronic conversion and amplification filtering rectification, be converted into the end timing end that level signal sends into described time to digital converter chip, described microprocessor obtains and terminates timer time t
2;
3) described microprocessor calculates wire distance to the ground L
0=Vt/2, wherein V is the speed of the laser pulse that laser emitting module sends, and t comes and goes the time needed for lens and ground, t=t for laser pulse
2-t
1;
4) described angular transducer measure described laser pulse and perpendicular to ground perpendicular line between angle θ, and be transferred to described microprocessor, described microprocessor calculates wire vertical range L=L over the ground
0cos θ=Vtcos θ/2;
5) described microprocessor by calculate gained wire over the ground vertical range L compared with the allowed band of setting, as wire over the ground vertical range L exceed the allowed band of setting, then send early warning signal.
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| CN201410854383.9A CN104457590A (en) | 2014-12-30 | 2014-12-30 | Conductor sag monitoring device based on laser distance measurement and monitoring methods |
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|---|---|---|---|
| CN201410854383.9A CN104457590A (en) | 2014-12-30 | 2014-12-30 | Conductor sag monitoring device based on laser distance measurement and monitoring methods |
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| CN108131156A (en) * | 2017-12-01 | 2018-06-08 | 山西宏安翔科技股份有限公司 | A kind of mine hydraulic bracket decrement monitoring device |
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| CN108131156A (en) * | 2017-12-01 | 2018-06-08 | 山西宏安翔科技股份有限公司 | A kind of mine hydraulic bracket decrement monitoring device |
| CN108062845A (en) * | 2017-12-19 | 2018-05-22 | 国家电网公司 | Line protection warning device |
| CN109211203A (en) * | 2018-09-28 | 2019-01-15 | 长春工程学院 | Transmission pressure crossed crossing distance monitoring device based on camera shooting ranging one |
| CN109211203B (en) * | 2018-09-28 | 2023-10-17 | 国网辽宁省电力有限公司抚顺供电公司 | Transmission line crossing distance monitoring device based on camera shooting and ranging integration |
| CN109297423A (en) * | 2018-10-09 | 2019-02-01 | 国网辽宁省电力有限公司抚顺供电公司 | A kind of transmission pressure distance to the ground and crossed crossing distance measuring device |
| CN109297423B (en) * | 2018-10-09 | 2024-02-02 | 国网辽宁省电力有限公司抚顺供电公司 | Transmission line is to ground distance and alternately stride across distance measuring device |
| CN109597089A (en) * | 2018-11-20 | 2019-04-09 | 天津市建联工程勘测有限公司 | A kind of triangle opposite side measuring instrument based on laser ranging and the cosine law |
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