CN102445695A - Non-aiming laser cable height measuring device and measuring method thereof - Google Patents
Non-aiming laser cable height measuring device and measuring method thereof Download PDFInfo
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- CN102445695A CN102445695A CN2011102879166A CN201110287916A CN102445695A CN 102445695 A CN102445695 A CN 102445695A CN 2011102879166 A CN2011102879166 A CN 2011102879166A CN 201110287916 A CN201110287916 A CN 201110287916A CN 102445695 A CN102445695 A CN 102445695A
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Abstract
The invention relates to a non-aiming laser cable height measuring device, which comprises a laser emitter for emitting a laser signal and a receiving module for receiving a reflected laser signal, and is also provided with a polyhedron prism consisting of a plurality of reflecting mirror faces, a transmission device for driving the polyhedron prism to rotate and a laser control and data processing module, wherein the laser signal emitted by the laser emitter is reflected into a fan-beam face laser signal to be emitted out through rotation of the polyhedron prism; and the laser control and data processing module is used for performing opening and closing control and data processing on the emitted light and the received reflected light. The invention also relates to a method for measuring by using the non-aiming laser cable height measuring device. In the invention, a laser beam is emitted out through a fan-beam face at a certain fan angle produced by rotation of the prism, so that a certain vertical range of a cable is covered, and reflected wave can be obtained in the range. By designing the reflected laser signal receiving system, detection and processing of echo are finished.
Description
Technical field
The invention belongs to the laser application technique field, what relate to the laser-measured height range finding improves one's methods especially a kind of non-aiming formula laser cable height measuring device and measuring method thereof.
Background technology
The hi-line height-finding technique has a wide range of applications in fields such as road and bridge construction, land use planning, dangerous situation investigations.At present, the main stream approach that the high voltage cable height is measured is that ultrasound wave is surveyed height and laser-measured height, and both compare, and Laser Measuring supreme people's court measuring accuracy is higher, ranging is bigger.Like U.S. Trupulse TruPulse360 laser ranging altimeter ranging 1000m, precision 0.3m; (CIC1500) precision is 0.5m to U.S. CIC series in the laser ranging altimeter ranging 200m for CIC700, CIC1200; Australia 6000E type electric wire ultrasound wave altimeter ranging is 30m only, measuring accuracy 0.2m.But ultrasound wave is surveyed the advantage of high laser-measured height at present and is need not aiming, thereby swift to operate, but ranging is shorter, is difficult to satisfy highly higher high voltage cable height and measures.Document (Pei Lizhi etc., a kind of design of lead height laser measuring instrument, radar institute of air force journal, Vol.18No.1, Mar.2004 p53-55) has introduced a kind of SCM Based lead height laser measuring method.This method adopts multicycle pulsed laser ranging principle, through Laser emission and reception, employing be that optical aiming system is surveyed height to lead.
The line footpath of general cable is at 4mm～30mm, so target area is little, and laser beam is also less relatively, and the reflection of laser needs to accomplish by the surface of cable.Therefore, requirement will be launched the beam alignment lead in surveying high process, measure so that realize.At present, cable laser-measured height method still adopts laser distance measuring principle and technology, must aim at the mark through gun sight and measure, and this is the weak point of present laser-measured height.
Summary of the invention
The technical matters that the present invention will solve is: in order to solve the deficiency of prior art; The present invention provides a kind of non-aiming formula laser cable height measuring device and phase method and impulse method measuring method; Have bigger range and precision; Need not optical aiming system, simplify the operation and the purpose of measuring fast to reach.
The technical solution adopted for the present invention to solve the technical problems is: a kind of non-aiming formula laser cable height measuring device; Comprise the generating laser of launching laser signal and the receiver module that receives the reflector laser signal; Also have polyhedral prism of forming by a plurality of mirror surfaces and the gearing that drives the polyhedral prism rotation; Described generating laser sends laser signal and is reflected into fan-beam face laser signal through the rotation of polyhedral prism and launches, and also has the laser instrument that reflected light to emission light and reception opens and closes control and data processing and controls and data processing module.
Reliable for the stability of rotation that makes polyhedral prism, described gearing comprises motor and transmission shaft, is in transmission connection through transmission shaft between motor and the polyhedral prism.
When adopting phase method to measure, described laser instrument control and data processing module comprise keying unit, phase demodulation unit and the data processing unit of controlling generating laser.
Described generating laser is the generating laser of emission modulated laser signal.
When adopting impulse method to measure, described laser instrument control and data processing module comprise keying unit, clock discriminating unit, clock interval measuring unit and the data processing unit of controlling generating laser.
Described generating laser is the generating laser of emission pulse laser signal.
Described receiver module comprises laser light sensing device and the optics telephoto lens that is arranged on laser light sensing device receiving end.Adopt this camera lens effective reception to arrive reflected light, reduce the interference that external environment caused.
A kind of method that adopts above-mentioned non-aiming formula laser cable height measuring device to carry out the phase method measurement has following steps:
(a) after control of generating laser process laser instrument and data processing module were opened, the high frequency master shook and sends the high frequency lasers signal, launches the modulated laser signal through laser modulator load-modulate signal;
The modulated laser signal of the high frequency of (b) launching interior light path with outside the light path synchronized transmissions; The modulated laser signal of light path becomes the benchmark mixed frequency signal of intermediate frequency in one tunnel reception with the mixing of laser local oscillator; The receiver module of leading up to receive outer light path from the modulated laser signal of measured object reflected back through become the range finding mixed frequency signal of intermediate frequency after the processing and amplifying with the mixing of laser local oscillator, described outer light path reflects generation fan-beam face light through the polyhedral prism that rotates outwards launches;
(c) the benchmark mixed frequency signal passes through phase demodulation unit measure phase difference with the range finding mixed frequency signal;
(d) phase differential that records calculates the height or the distance of measured object through data processing unit.
A kind of method that adopts above-mentioned non-aiming formula laser cable height measuring device to carry out the impulse method measurement has following steps:
(a) after control of generating laser process laser instrument and data processing module were opened, the high frequency master shook and sends the high frequency lasers signal, launches pulsed laser signal through laser modulator load pulses signal;
The pulsed laser signal of the high frequency of (b) launching interior light path with outside the light path synchronized transmissions; The pulsed laser signal of light path reflected back in receiving cable one receives; Receiving cable two is through the pulsed laser signal from the measured object reflected back of the outer light path of receiver module reception, and described outer light path generates fan-beam face light through the polyhedral prism reflection of rotating and outwards launches;
(c) pulsed laser signal of interior light path and outer light path is through clock discriminating unit measuring round trip time;
(d) record mistiming through the clock interval measuring unit two-way time that records;
(e) mistiming that records calculates the height or the distance of measured object through data processing unit.
The invention has the beneficial effects as follows; Non-aiming formula laser cable height measuring device novel structure of the present invention is easy to make, and integrates ultrasound wave and surveys advantage high and laser-measured height; Promptly have bigger range and precision; Also need not optical aiming system, simplify the operation and the purpose of measuring fast, can be widely used in the thin objects measuring height and distance to reach.
The present invention goes out laser beam through the fan-beam surface launching that the prism rotation produces a certain fan angle, thereby covers the vertical certain limit of cable, in this scope, all can obtain the reflector laser signal.Through design reflectivity laser signal receiving system, accomplish detection and processing to echo.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Fig. 1 is the structural representation of non-aiming formula laser cable height measuring device most preferred embodiment of the present invention;
Fig. 2 is phase method measuring principle figure;
Fig. 3 is the structured flowchart of the phase method measuring principle of employing of the present invention;
Fig. 4 is the structured flowchart of the impulse method measuring principle of employing of the present invention.
Among the figure: 1. tested cable, 2. generating laser, 3. laser light sensing device, 4. polyhedral prism, 5. laser instrument control and data processing module, 6. motor, 7. transmission shaft, 8. optics telephoto lens.
Embodiment
Combine accompanying drawing that the present invention is done further detailed explanation now.These accompanying drawings are the synoptic diagram of simplification, basic structure of the present invention only is described in a schematic way, so it only show the formation relevant with the present invention.
It is high that non-aiming formula laser cable height measuring device is used for the survey of cable, mainly is that the survey of hi-line is high, also can be used for the high or range finding of survey of close field of measurement.
Fig. 1 Fig. 2 Fig. 3 is the embodiment that the employing phase method of non-aiming formula laser cable height measuring device of the present invention is measured; The generating laser 2 and the receiver module that receives the reflection modulation laser signal that comprise emission modulated laser signal; Receiver module comprises laser light sensing device 3 and the optics telephoto lens 8 that is arranged on laser light sensing device 3 receiving ends; Also have polyhedral prism of forming by a plurality of mirror surfaces 4 and the gearing that drives polyhedral prism 4 rotations; Gearing comprises motor 6 and transmission shaft 7; Be in transmission connection through transmission shaft 7 between motor 6 and the polyhedral prism 4; Generating laser 2 sends laser signal and is reflected into fan-beam face laser signal through the rotation of polyhedral prism 4 and launches, and also has the laser instrument that reflected light to emission light and reception opens and closes control and data processing and controls and data processing module 5, and laser instrument is controlled and data processing module 5 comprises keying unit, phase demodulation unit and the data processing unit of controlling generating laser 2.
A kind of method that adopts above-mentioned non-aiming formula laser cable height measuring device to carry out the phase method measurement has following steps:
(a) after generating laser 2 process laser instrument controls and data processing module 5 were opened, the high frequency master shook and sends the high frequency lasers signal, launches the modulated laser signal through laser modulator load-modulate signal;
The modulated laser signal of the high frequency of (b) launching interior light path with outside the light path synchronized transmissions; The modulated laser signal of light path becomes the benchmark mixed frequency signal of intermediate frequency in one tunnel reception with the mixing of laser local oscillator; The receiver module of leading up to receive outer light path from the modulated laser signal of measured object reflected back through become the range finding mixed frequency signal of intermediate frequency after the processing and amplifying with the mixing of laser local oscillator, outer light path is outwards launched through the polyhedral prism 4 reflection generation fan-beam face light that rotate;
(c) the benchmark mixed frequency signal passes through phase demodulation unit measure phase difference with the range finding mixed frequency signal;
(d) phase differential that records calculates the height or the distance of measured object through data processing unit.
The present invention adopts the method for Laser Range Finding Based on Phase that hi-line is surveyed height; Laser Range Finding Based on Phase is the range information that utilizes the phase differential of light intensity between the reception light of modulated laser signal and measured target reflection of emission to comprise, and realizes the measurement to the measured target distance.Its computing formula is:
In the formula: D: tested distance; Φ: modulated light wave is travelled to and fro between the phase differential that tested distance B produces; T: light wave is travelled to and fro between the time that D once spends, λ: the wavelength of modulated light wave, c: light wave speed, f: light modulated wave frequency.
In Fig. 2, A representes the launching site of modulated laser signal, and B representes the position of tested cable, and the modulated laser signal that A ' expression is sent is the reception place of reflection modulation laser signal after reflection.The distance of AA ' point-to-point transmission promptly is 2 times of testing distance D.
Therefore: φ=N
12 π+Δ φ
1=2 π (N
1+ Δ N
1), Δ N wherein
1=Δ φ
1/ 2 π
N in the formula
1The integral multiple of 2 π that comprise in the expression phase, Δ φ
1Expression is not the mantissa of phase place of π complete cycles 2.Δ N wherein
1Can measure, but N
1Be not a definite value, thereby cause many-valued separating.For addressing this problem, must adopt several frequencies to measure same distance, this frequency is also referred to as modulation frequency in phase ranging.In practical application, select the survey chi of a decision instrument distance accuracy and the several auxiliary survey chi of decision ranging usually, be referred to as accurate measurement survey chi and bigness scale respectively and survey chi.
Because under the high-frequency, it is relatively more difficult technically with the measurement of phase of received signal difference to transmit, the parasitic parameter in the circuit produces significant additional phase shift, has reduced phase-measurement accuracy.Therefore, the phase differential of measuring high-frequency signal generally adopts difference frequency to survey phase.The ultimate principle structure of ranging phase method system is as shown in Figure 3.Produce two intermediate-freuqncy signals of benchmark mixed frequency signal and range finding mixed frequency signal with the laser signal mixing that interior light path and outer light path receive respectively through the laser local oscillator, again these two intermediate-freuqncy signals are measured its phase differential, to improve measuring reliability and precision.
The present invention combines the collection ultrasound wave to survey advantage high and laser-measured height at laser part; As shown in Figure 1; Adopt polyhedral prism 4; And with 4 rotations of motor 6 control polyhedral prisms, produce the fan-beam face laser signal with certain fan angle by generating laser 2 emitted laser signals through polyhedral prism 4 reflections and launch, just can cover the vertical certain limit of cable.The laser light sensing device 3 of receiver module detects in this scope by the hi-line laser light reflected, so just need not optical aiming system.The present invention compares other system and has reached the purpose that simplifies the operation with quick measurement, and is widely used in the thin objects measuring height and distance.
Fig. 1 Fig. 4 is the embodiment that the impulse method of non-aiming formula laser cable height measuring device of the present invention is measured; The generating laser 2 and the receiver module that receives the reflected impulse laser signal that comprise the emission pulse laser signal; Receiver module comprises laser light sensing device 3 and the optics telephoto lens 8 that is arranged on laser light sensing device 3 receiving ends; Also have polyhedral prism of forming by a plurality of mirror surfaces 4 and the gearing that drives polyhedral prism 4 rotations; Gearing comprises motor 6 and transmission shaft 7; Be in transmission connection through transmission shaft 7 between motor 6 and the polyhedral prism 4; Generating laser 2 sends laser signal and is reflected into fan-beam face laser signal through the rotation of polyhedral prism 4 and launches, and also has the laser instrument that reflected light to emission light and reception opens and closes control and data processing and controls and data processing module 5, and laser instrument is controlled and data processing module 5 comprises keying unit, clock discriminating unit, clock interval measuring unit and the data processing unit of controlling generating laser 2.
A kind of method that adopts above-mentioned non-aiming formula laser cable height measuring device to carry out the impulse method measurement has following steps:
(a) after generating laser 2 process laser instrument controls and data processing module 5 were opened, the high frequency master shook and sends the high frequency lasers signal, launches pulsed laser signal through laser modulator load pulses signal;
The pulsed laser signal of the high frequency of (b) launching interior light path with outside the light path synchronized transmissions; The pulsed laser signal of light path reflected back in receiving cable one receives; Receiving cable two is through the pulsed laser signal from the measured object reflected back of the outer light path of receiver module reception, and described outer light path generates fan-beam face light through polyhedral prism 4 reflections of rotating and outwards launches;
(c) pulsed laser signal of interior light path and outer light path is through clock discriminating unit measuring round trip time;
(d) record mistiming through the clock interval measuring unit two-way time that records;
(e) mistiming that records calculates the height or the distance of measured object through data processing unit.
Claims (9)
1. non-aiming formula laser cable height measuring device; Comprise the generating laser (2) of launching laser signal and the receiver module that receives the reflector laser signal; It is characterized in that: also have the polyhedral prism of forming by a plurality of mirror surfaces (4) and drive the gearing that polyhedral prism (4) rotates; Described generating laser (2) sends laser signal and is reflected into fan-beam face laser signal and launches through the rotation of polyhedral prism (4), also has the laser instrument that reflected light to emission light and reception opens and closes control and data processing and controls and data processing module (5).
2. non-aiming formula laser cable height measuring device as claimed in claim 1, it is characterized in that: described gearing comprises motor (6) and transmission shaft (7), is in transmission connection through transmission shaft (7) between motor (6) and the polyhedral prism (4).
3. non-aiming formula laser cable height measuring device as claimed in claim 1 is characterized in that: described laser instrument control and data processing module (5) comprise keying unit, phase demodulation unit and the data processing unit of control generating laser (2).
4. non-aiming formula laser cable height measuring device as claimed in claim 3 is characterized in that: described generating laser (2) is the generating laser of emission modulated laser signal.
5. non-aiming formula laser cable height measuring device as claimed in claim 1 is characterized in that: described laser instrument control and data processing module (5) comprise keying unit, clock discriminating unit, clock interval measuring unit and the data processing unit of control generating laser (2).
6. non-aiming formula laser cable height measuring device as claimed in claim 5, it is characterized in that: described generating laser (2) is the generating laser of emission pulse laser signal.
7. non-aiming formula laser cable height measuring device as claimed in claim 1, it is characterized in that: described receiver module comprises laser light sensing device (3) and is arranged on the optics telephoto lens (8) of laser light sensing device (3) receiving end.
8. method that adopts above-mentioned non-aiming formula laser cable height measuring device to measure is characterized in that having following steps:
(a) after control of generating laser (2) process laser instrument and data processing module (5) were opened, the high frequency master shook and sends the high frequency lasers signal, launches the modulated laser signal through laser modulator load-modulate signal;
The modulated laser signal of the high frequency of (b) launching interior light path with outside the light path synchronized transmissions; The modulated laser signal of light path becomes the benchmark mixed frequency signal of intermediate frequency in one tunnel reception with the mixing of laser local oscillator; The receiver module of leading up to receive outer light path from the modulated laser signal of measured object reflected back through become the range finding mixed frequency signal of intermediate frequency after the processing and amplifying with the mixing of laser local oscillator, described outer light path reflects generation fan-beam face light through the polyhedral prism (4) that rotates outwards launches;
(c) the benchmark mixed frequency signal passes through phase demodulation unit measure phase difference with the range finding mixed frequency signal;
(d) phase differential that records calculates the height or the distance of measured object through data processing unit.
9. method that adopts above-mentioned non-aiming formula laser cable height measuring device to measure is characterized in that having following steps:
(a) after control of generating laser (2) process laser instrument and data processing module (5) were opened, the high frequency master shook and sends the high frequency lasers signal, launches pulsed laser signal through laser modulator load pulses signal;
The pulsed laser signal of the high frequency of (b) launching interior light path with outside the light path synchronized transmissions; The pulsed laser signal of light path reflected back in receiving cable one receives; Receiving cable two is through the pulsed laser signal from the measured object reflected back of the outer light path of receiver module reception, and described outer light path generates fan-beam face light through polyhedral prism (4) reflection of rotating and outwards launches;
(c) pulsed laser signal of interior light path and outer light path is through clock discriminating unit measuring round trip time;
(d) record mistiming through the clock interval measuring unit two-way time that records;
(e) mistiming that records calculates the height or the distance of measured object through data processing unit.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749927A (en) * | 2012-07-20 | 2012-10-24 | 常州大学 | System for pilotless plane to automatically avoid barrier and avoiding method of system |
| CN104535018A (en) * | 2014-12-24 | 2015-04-22 | 中国科学院长春光学精密机械与物理研究所 | Method for measuring precision of polyhedral scanning rotating mirror |
| CN105277946A (en) * | 2014-06-09 | 2016-01-27 | 国家电网公司 | Cable laying distance measuring method |
| CN107505475A (en) * | 2017-10-13 | 2017-12-22 | 河海大学 | A kind of measurement apparatus and method of rotating shaft transient speed and throw based on laser |
| CN109298423A (en) * | 2018-10-22 | 2019-02-01 | 南京信大气象科学技术研究院有限公司 | A kind of survey wave radar based on continuous wave |
| CN110736998A (en) * | 2018-07-20 | 2020-01-31 | 现代摩比斯株式会社 | Laser radar system and method of operating the same |
| CN112009557A (en) * | 2020-09-10 | 2020-12-01 | 广州明权科技有限公司 | Intelligent control mobile cart for large medical equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1458535A (en) * | 2003-05-07 | 2003-11-26 | 天津大学 | Active laser scanning far distance coordinate detecting method |
| CN101158572A (en) * | 2007-10-31 | 2008-04-09 | 大连海事大学 | Frequency division multiplexing type paralleling laser length measuring instrument |
| CN101216562A (en) * | 2007-01-05 | 2008-07-09 | 薛志强 | Laser distance measuring system |
| CN101344591A (en) * | 2008-08-22 | 2009-01-14 | 清华大学 | Miniature laser two-dimension scanning survey system |
-
2011
- 2011-09-26 CN CN2011102879166A patent/CN102445695A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1458535A (en) * | 2003-05-07 | 2003-11-26 | 天津大学 | Active laser scanning far distance coordinate detecting method |
| CN101216562A (en) * | 2007-01-05 | 2008-07-09 | 薛志强 | Laser distance measuring system |
| CN101158572A (en) * | 2007-10-31 | 2008-04-09 | 大连海事大学 | Frequency division multiplexing type paralleling laser length measuring instrument |
| CN101344591A (en) * | 2008-08-22 | 2009-01-14 | 清华大学 | Miniature laser two-dimension scanning survey system |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749927A (en) * | 2012-07-20 | 2012-10-24 | 常州大学 | System for pilotless plane to automatically avoid barrier and avoiding method of system |
| CN105277946A (en) * | 2014-06-09 | 2016-01-27 | 国家电网公司 | Cable laying distance measuring method |
| CN104535018A (en) * | 2014-12-24 | 2015-04-22 | 中国科学院长春光学精密机械与物理研究所 | Method for measuring precision of polyhedral scanning rotating mirror |
| CN107505475A (en) * | 2017-10-13 | 2017-12-22 | 河海大学 | A kind of measurement apparatus and method of rotating shaft transient speed and throw based on laser |
| CN110736998A (en) * | 2018-07-20 | 2020-01-31 | 现代摩比斯株式会社 | Laser radar system and method of operating the same |
| US11828878B2 (en) | 2018-07-20 | 2023-11-28 | Hyundai Mobis Co., Ltd. | LiDAR system and operating method thereof |
| CN109298423A (en) * | 2018-10-22 | 2019-02-01 | 南京信大气象科学技术研究院有限公司 | A kind of survey wave radar based on continuous wave |
| CN112009557A (en) * | 2020-09-10 | 2020-12-01 | 广州明权科技有限公司 | Intelligent control mobile cart for large medical equipment |
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Application publication date: 20120509 |