CN201615748U - Range finder determining distance between two target points - Google Patents
Range finder determining distance between two target points Download PDFInfo
- Publication number
- CN201615748U CN201615748U CN2010201224308U CN201020122430U CN201615748U CN 201615748 U CN201615748 U CN 201615748U CN 2010201224308 U CN2010201224308 U CN 2010201224308U CN 201020122430 U CN201020122430 U CN 201020122430U CN 201615748 U CN201615748 U CN 201615748U
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- distance
- stadimeter
- crossbeam
- image sensor
- laser instrument
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- Length Measuring Devices By Optical Means (AREA)
- Measurement Of Optical Distance (AREA)
Abstract
The utility model discloses a range finder determining distance between two target points which includes an image sensing device and also includes a crossbeam; a first laser, an image sensing device, a numerical value operating module and a display screen are arranged on the crossbeam. The range finder determining distance between two target points has a simple operating method; therefore, the range finder determining distance between two target points can greatly reduce the requirements on electronic apparatuses and is convenient for large-area popularization.
Description
Technical field
The utility model relates to a kind of ranging technology, specifically, relates to a kind of stadimeter of measuring distance between two impact points.
Background technology
Laser range finder is in light weight, volume is little, speed simple to operate is fast and accurately, its error only is that 1/5th of other optical range finder arrives hundreds of/one, thereby be widely used in topographical surveying, the battlefield is measured, tank, aircraft, naval vessels and cannon are measured the height of cloud layer, aircraft, guided missile and artificial satellite etc. to the range finding of target.Simultaneously, also be the important technology equipment that improves high tank, aircraft, naval vessels and gun precision.
Laser range finder is the instrument that utilizes laser that the distance of target is accurately measured.Existing laser range finder penetrates a branch of very thin laser to target when work, by photovalve receiving target laser light reflected bundle, timer is measured laser beam from being transmitted into the time of reception, calculates the range-to-go from the observer.If it is t that light is propagated at A, B point-to-point transmission round trip required time in air with speed c, then A, B distance between two points D can represent with D=ct/2, D represents A, B distance between two points in the formula, and c represents the speed that light is propagated in atmosphere, and t represents that light comes and goes the once required time of A, B.By following formula as can be known, measure A, B distance and be actually the time t that wants measuring light to propagate,, can be divided into two kinds of measurement forms of pulsed and phase type usually according to the difference of Measuring Time method.Phase type is the frequency with radio wave band, laser beam is carried out amplitude modulation(PAM) and measure light modulated coming and going the phase delay that survey line is once produced, again according to modulation light wavelength, the distance of this phase delay representative that converts.
But, above-mentioned laser ranging technique for electron device require high, so, cause the manufacturing cost of laser range finder high, limited on a large scale and promoted the use of.
As shown in Figure 1, be the structural representation of Image sensor apparatus in the prior art.The structure of Image sensor apparatus 100 comprises: imageing sensor 101 and camera lens 102.Image sensor apparatus 100 can be selected Digital Video or digital camera for use.Imageing sensor can form view data with the light that shines on it.Imageing sensor can adopt Charge Coupled Device (CCD) imageing sensor (CCD, Charge CoupledDevice) or complementary matal-oxide semiconductor (Complementary Metal-OxideSemiconductor).
The utility model content
The technical matters that the utility model solved provides a kind of stadimeter of measuring distance between two impact points, because the range finding account form is simple, so can reduce the requirement to electronic equipments greatly, is convenient to large tracts of land and promotes.
Technical scheme is as follows:
A kind of stadimeter of measuring distance between two impact points comprises Image sensor apparatus, also comprises crossbeam, and described crossbeam is provided with first laser instrument, Image sensor apparatus, numerical operation module and display screen.
Further: described Image sensor apparatus comprises camera lens and imageing sensor.
Further: also comprise second laser instrument.
Further: also comprise mainboard, described numerical operation module and display screen are arranged on the described mainboard, and described mainboard is used to described numerical operation module and display screen that circuit is provided.
Further: also comprise support, described crossbeam is fixed on the described support.
Further: described crossbeam is provided with laser instrument rotating shaft, crossbeam rotating shaft and Image sensor apparatus rotating shaft; Described laser instrument is fixed on the described crossbeam by described laser instrument rotating shaft, and described Image sensor apparatus is fixed on the described crossbeam by described Image sensor apparatus rotating shaft, and described crossbeam is fixed on the described support by described crossbeam rotating shaft.
Further: at described camera lens front end optical filter is set, described optical filter is used to filter out stray light.
Further: described imageing sensor adopts Charge Coupled Device (CCD) imageing sensor or complementary matal-oxide semiconductor.
Further: described Image sensor apparatus is selected Digital Video or digital camera for use.
Further: a reflective light-passing board of auxiliary range finding is set at the front end one setpoint distance place of described first laser instrument.
The technique effect that technical solutions of the utility model are brought comprises:
1, the utility model is different fully with existing laser ranging technique, and a kind of brand-new distance measuring method is provided, because the range finding account form is simple, so can reduce the requirement to electronic equipments greatly, is convenient to large tracts of land and promotes.
2, in activities such as building operation, construction and installation, house measurement, often need to measure distance between two points, currently used method adopts tape measure or tape measure to measure basically, usually need two people to carry out during measurement, sometimes because of site environment complexity, measurement point are difficult for arriving even can not arriving, bring inconvenience to measurement.And the utility model is easy to use, is very suitable for using under the complex conditions.
3, the utility model " finding is promptly measured " only needs device is placed on measurement point, institute's emitted laser is pointed to two impact points of required measurement and can be seen measurement data; Only need a people just can measure distance between 2 during use, do not need to arrive any point in 2.
Description of drawings
Fig. 1 is the structural representation of Image sensor apparatus in the prior art;
Fig. 2 utilizes a light source to measure the work synoptic diagram of the stadimeter of distance between two impact points in the utility model;
Fig. 3 utilizes two light sources to measure the work synoptic diagram of the stadimeter of distance between two impact points in the utility model;
Fig. 4 is the algorithm synoptic diagram that Fig. 2 example draws distance between two impact points in the utility model;
Fig. 5 is the algorithm synoptic diagram that Fig. 3 example draws distance between two impact points in the utility model;
Fig. 6 is the synoptic diagram that draws the reflection ray angle after CCD tilts in the utility model;
Fig. 7 is the work synoptic diagram that is provided with the stadimeter of laser instrument rotating shaft, crossbeam rotating shaft and Image sensor apparatus rotating shaft in the utility model;
Fig. 8 is an algorithm synoptic diagram of measuring emission angle in the utility model.
Embodiment
Stadimeter provided by the utility model adopts a kind of brand-new distance measuring method, can conveniently measure two distances between the impact point effectively.With the lasing light emitter is light source point, is the light reflection spot with first impact point, is optical receiver point with the Image sensor apparatus, makes up first triangle; With the lasing light emitter is light source point, is the light reflection spot with second impact point, is optical receiver point with the Image sensor apparatus, makes up second triangle; Light source point is launched laser to impact point, obtain the reflection angle of two reflection lasering beams respectively by Image sensor apparatus, and then obtain the angles of two bundles between the reflector lasers, under the known situation of the distance between optical receiver point and the light source point, just can utilize the triangle principle to obtain distance between two impact points, reach the purpose of range finding.
Below with reference to accompanying drawing and preferred embodiment, technical solutions of the utility model are elaborated.
As shown in Figure 2, be to utilize a light source to measure the work synoptic diagram of the stadimeter of distance between two impact points in the utility model.In this preferred embodiment, laser instrument 201 and Image sensor apparatus 100 are point-blank; When measure between distant object point 206 and the impact point 207 apart from the time, laser instrument 201 is respectively to impact point 206 and impact point 207 emission of lasering beam, Image sensor apparatus 100 is caught the laser beam that impact point 206 and impact point 207 reflect.
The structure of stadimeter comprises: laser instrument 201, crossbeam 202, Image sensor apparatus 100, mainboard 203, and be arranged on numerical operation module 204 and display screen 205 on the mainboard 203.Wherein, laser instrument 201 and Image sensor apparatus 100 are fixed on the crossbeam 202, and laser instrument 201 is used for to impact point 206 and impact point 207 difference emission of lasering beam as light source; Impact point 206 and impact point 207 reflected illumination respectively arrive the laser beam of self; Image sensor apparatus 100 is used for the laser beam that captured target point 206 and impact point 207 reflect, and the image information that twice laser beam forms is sent to numerical operation module 204; Numerical operation module 204 receives image information, and luminous point is to the distance of setting between the basic point on the mensuration image information.Be set with in the numerical operation module 204 camera lens 102 central points to the distance between the CCD101 and camera lens 102 to the distance between the laser instrument 201, numerical operation module 204 draws two groups of reflection lasering beams according to luminous point to the distance between the setting basic point and camera lens 102 central points to the distance between the CCD101 horizontal sextant angle.The emission angle of laser beam obtains according to the actual shifts of laser instrument.Angle between the two bundle reflector lasers is the poor of each bundle reflector laser horizontal sextant angle.So, can draw impact point 206 to the distance between the impact point 207 to the distance between the laser instrument 201 according to angle between the emission angle of laser beam, reflection angle, the reflection ray and camera lens 102.Numerical operation module 204 shows impact point 206 to sending to display screen 205 apart from the form with data between the impact point 207.Mainboard 203 is used to numerical operation module 204 and display screen 205 that Circuits System is provided.
Mainboard 203, numerical operation module 204 and display screen 205 can be arranged on the crossbeam 202, wherein, display screen 205 and numerical operation module 204 are arranged on the mainboard 203, and numerical operation module 204 and display screen 205 can adopt independent circuit separately, and mainboard 203 can omit in this case.In addition, laser instrument 201, Image sensor apparatus 100 and mainboard 203 also can be arranged on dedicated enclosure or the parts, can omit crossbeam 202 herein like this.
Measure for convenience, can dispose a support that plays fixation, stadimeter is fixed on this support by crossbeam 202 for stadimeter.In order effectively to catch the laser beam that reflects, can optical filter be set at camera lens 102 front ends, can effectively filter out stray light by optical filter.
As shown in Figure 3, be to utilize two light sources to measure the work synoptic diagram of the stadimeter of distance between two impact points in the utility model.This preferred embodiment is equivalent to Fig. 2 example has increased a laser instrument 208.Between measuring target point 206 and the impact point 207 apart from the time, laser instrument 201 is to impact point 206 emission of lasering beam, with impact point 207 difference emission of lasering beam, laser instrument 208 is to impact point 207 emission of lasering beam, and impact point 206 and impact point 207 reflected illumination respectively arrive the laser beam of self; The laser beam that Image sensor apparatus 100 captured target points 206 and impact point 207 reflect, and the image information that twice laser beam formed sends to numerical operation module 204.
Angle between the two bundle reflector lasers still is the poor of each bundle reflector laser horizontal sextant angle.So according to the angle between the emission angle of laser beam, reflection angle, the reflection ray, and camera lens 102 just can draw impact point 206 to the distance between the impact point 207 to distance between the laser instrument 201 and camera lens 102 to the distance between the laser instrument 208.
As shown in Figure 4, be the algorithm synoptic diagram that Fig. 2 example draws distance between two impact points in the utility model.Target setting point 206 is some C1, impact point 207 is some C2, laser instrument 201 is some B, baseline passes camera lens 102 central point O, the vertical intersection point of baseline and CCD101 is to set basic point P, the laser beam that the C1 point reflection is returned forms luminous point A1 at CCD101, and the laser beam that the C2 point reflection is returned forms luminous point A2 at CCD101, and CCD101 is parallel with line segment BO; To the emission angle R5 of C1 emitted laser bundle is 90 ° of angles, is R1 to the emission angle of C2 emitted laser bundle.
The emission angle of laser beam obtains according to the actual shifts of laser instrument, i.e. emission angle=90 °-deviation angle, and for example, when deviation angle was 0, emission angle was 90, when deviation angle was 45 °, emission angle was 45 °.
When laser is mapped on the CCD101, can on CCD101, form luminous point, if the luminous point that laser beam forms on CCD101 is bigger, the center of then getting this luminous point is as an A1 or A2.Like this, O, A1, P will constitute a right-angle triangle OA1P, and O, A2, P will constitute a right-angle triangle OA2P.C2, O and B, and C1, O and B will constitute two triangle C2OB and C1OB, wherein C1OB is a right-angle triangle, R5 is the right angle.
Because CCD101 is parallel with line segment BO, so ∠ OA1P=R3, R3=arctgOP/A1P, OP represent the length of line segment OP, and A1P represents the length of line segment A1P; ∠ OA2P=R2, R2=arctgOP/A2P, OP represent the length of line segment OP, and A2P represents the length of line segment A2P.So, utilize CCD101 to obtain the horizontal sextant angle R3 of the laser beam that C1 reflects to the distance of O, luminous point A1 to the distance of setting basic point P; Utilize CCD101 to obtain the horizontal sextant angle R2 of the laser beam that C2 reflects to the distance of O, luminous point A2 to the distance of setting basic point P.R2-R3=R4, R4 are the angle between the two bundle reflector lasers.C1O=BO/cosR3, line segment BO represent the distance between the laser instrument 201 to camera lens 102 central point O, and line segment C1O represents C1 to the distance between the central point O; Known R1, R2 and line segment BO can draw the length of line segment C2O, and line segment C2O represents the distance of C2 to central point O; And then, under the situation of the length of the length of known line segment C2O, line segment C1O and R4, just can obtain the length of line segment C1C2, line segment C1C2 represents the distance between impact point 206 and the impact point 207.
As shown in Figure 5, be to draw in Fig. 3 example the algorithm synoptic diagram of distance between two impact points in the utility model.Target setting point 206 is some C1, impact point 207 is some C2, laser instrument 201 is some B1, laser instrument 208 is some B2, baseline passes camera lens 102 central point O, and the vertical intersection point of baseline and CCD101 is to set basic point P, and the laser beam that the C1 point reflection is returned forms luminous point A1 at CCD101, the laser beam that the C2 point reflection is returned forms luminous point A2 at CCD101, and CCD101 is parallel with line segment BO; To the emission angle R5 of C1 emitted laser bundle is 90 ° of angles, is R1 to the emission angle of C2 emitted laser bundle.
Like this, O, A1, P will constitute a right-angle triangle OA1P, and O, A2, P will form right angle triangle OA2P.C2, O and B, and C1, O and B will constitute two triangle C2OB and C1OB, wherein C1OB is a right-angle triangle, R5 is the right angle.
The above-mentioned principle of foundation can obtain the distance between impact point 206 and the impact point 207 equally.
As shown in Figure 6, be the synoptic diagram that draws the reflection ray angle after CCD tilts in the utility model.When impact point 206 distance lasers 201 are nearer, laser instrument 201 is equally with perpendicular to the horizontal direction emission of lasering beam, because it is bigger that the laser beam that impact point 206 or impact point 207 reflect tilts, laser beam might be beaten less than on the CCD101, makes effectively imaging of CCD101.In order to address this problem, during stabilized image sensing apparatus 100, make Image sensor apparatus 100 certain angle that tilts in advance, make CCD101 no longer parallel, but form one less than 90 ° angle with line segment BO.In this preferred embodiment, the angle between CCD101 and the line segment BO is a 45.Establish a three way relationship according to Fig. 4 and Fig. 5 exemplary method, the extended line of line segment OA1 and horizontal intersection point are Q.The angle of CCD101 after C1 reflection lasering beam that setting obtains at this moment and the inclination is ∠ c, and the pitch angle of CCD101 is ∠ d (being CCD101 and horizontal angle), and then the angle of C1 reflection lasering beam horizontal direction is ∠ c-∠ d=R3.As a same reason, can draw R2.
The algorithm that Fig. 4 to Fig. 6 describes is solidificated in the numerical operation module 204, like this, just can draw the distance between 2 at once after numerical operation module 204 receives image information, and this range data is sent to display screen 205 shows.
As shown in Figure 7, be the work synoptic diagram that is provided with the stadimeter of laser instrument rotating shaft 703, laser instrument rotating shaft 704, crossbeam rotating shaft 702 and Image sensor apparatus rotating shaft 701 in the utility model.In order further to be convenient to the laser beam that measuring distance and seizure reflect, crossbeam 202 is provided with laser instrument rotating shaft 703, laser instrument rotating shaft 704, crossbeam rotating shaft 702 and Image sensor apparatus rotating shaft 701; Laser instrument 201 is fixed on the crossbeam 202 by laser instrument rotating shaft 703, laser instrument 208 is fixed on the crossbeam 202 by laser instrument rotating shaft 704, laser instrument 201, laser instrument 208 can be realized horizontally rotating by laser instrument rotating shaft 703, laser instrument rotating shaft 704, so that aim at the mark a little 206 and impact point 207; Image sensor apparatus 100 is fixed on the crossbeam 202 by this Image sensor apparatus rotating shaft 701, and Image sensor apparatus 100 can be realized horizontally rotating by Image sensor apparatus rotating shaft 701, so that catch the laser beam that reflects; When stadimeter was fixed on the support, stadimeter was realized the vertical direction rotation by crossbeam rotating shaft 602.By operate lasers rotating shaft 703, laser instrument rotating shaft 704, crossbeam rotating shaft 702 and Image sensor apparatus rotating shaft 701, can easily realize aiming at the mark a little 206, impact point 207 and catch the laser beam that reflects.
As shown in Figure 8, be the algorithm synoptic diagram of measuring emission angle in the utility model.The utility model has provided another and has obtained the technical scheme of emission angle, a reflective light-passing board 801 of auxiliary range finding is set at the front end one setpoint distance place of laser instrument 201 or laser instrument 208, and the reflective light-passing board 801 of auxiliary range finding is the eyeglasses of not only can printing opacity but also can be reflective.If the reflective spot of reflective light-passing board 801 reflection lasers 208 emission of lasering beam of auxiliary range finding is E, cross some E and do vertical line to line segment B1B2, meet at a D.After the reflective light-passing board 801 laser light reflected bundles of auxiliary range finding are captured by Image sensor apparatus 100, will draw reflection angle R6; The length that can obtain line segment OD according to length and the angle R6 of line segment ED, because line segment OB2 is known, so, can further obtain the length of line segment DB2, last, can draw emission angle R1 according to the length of line segment DB2 and the length of line segment ED.
Algorithm in this preference is solidificated in the numerical operation module 204.
Claims (10)
1. a stadimeter of measuring distance between two impact points comprises Image sensor apparatus, and it is characterized in that: also comprise crossbeam, described crossbeam is provided with first laser instrument, Image sensor apparatus, numerical operation module and display screen.
2. the stadimeter of distance between two impact points of mensuration as claimed in claim 1, it is characterized in that: described Image sensor apparatus comprises camera lens and imageing sensor.
3. as the stadimeter of distance between claim 1 or two impact points of 2 each described mensuration, it is characterized in that: also comprise second laser instrument.
4. as the stadimeter of distance between claim 1 or two impact points of 2 each described mensuration, it is characterized in that: also comprise mainboard, described numerical operation module and display screen are arranged on the described mainboard, and described mainboard is used to described numerical operation module and display screen that circuit is provided.
5. as the stadimeter of distance between claim 1 or two impact points of 2 each described mensuration, it is characterized in that: also comprise support, described crossbeam is fixed on the described support.
6. the stadimeter of distance between two impact points of mensuration as claimed in claim 1, it is characterized in that: described crossbeam is provided with laser instrument rotating shaft, crossbeam rotating shaft and Image sensor apparatus rotating shaft; Described laser instrument is fixed on the described crossbeam by described laser instrument rotating shaft, and described Image sensor apparatus is fixed on the described crossbeam by described Image sensor apparatus rotating shaft, and described crossbeam is fixed on the described support by described crossbeam rotating shaft.
7. the stadimeter of distance between two impact points of mensuration as claimed in claim 1, it is characterized in that: at described camera lens front end optical filter is set, described optical filter is used to filter out stray light.
8. the stadimeter of distance between two impact points of mensuration as claimed in claim 1 is characterized in that: described imageing sensor adopts Charge Coupled Device (CCD) imageing sensor or complementary matal-oxide semiconductor.
9. the stadimeter of distance between two impact points of mensuration as claimed in claim 1, it is characterized in that: described Image sensor apparatus is selected Digital Video or digital camera for use.
10. the stadimeter of distance between two impact points of mensuration as claimed in claim 1 is characterized in that: a reflective light-passing board of auxiliary range finding is set at the front end one setpoint distance place of described first laser instrument.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201224308U CN201615748U (en) | 2010-02-09 | 2010-02-09 | Range finder determining distance between two target points |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010201224308U CN201615748U (en) | 2010-02-09 | 2010-02-09 | Range finder determining distance between two target points |
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| CN201615748U true CN201615748U (en) | 2010-10-27 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103292711A (en) * | 2013-05-30 | 2013-09-11 | 国家电网公司 | Displacement monitoring device for trolley of switch cabinet |
| CN104079868A (en) * | 2013-03-29 | 2014-10-01 | 中原工学院 | Laser-assisted distance measuring device and method for single-sight-point video monitoring |
| CN104165592A (en) * | 2013-05-30 | 2014-11-26 | 国家电网公司 | Switch cabinet trolley displacement monitoring method |
| CN105403194A (en) * | 2015-12-13 | 2016-03-16 | 重庆桑耐美光电科技有限公司 | Optical calibration distance measuring and length measuring device and distance measuring and length measuring method |
| CN110906866A (en) * | 2019-11-13 | 2020-03-24 | 浙江海洋大学 | Rock mass displacement monitoring device and monitoring method |
-
2010
- 2010-02-09 CN CN2010201224308U patent/CN201615748U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104079868A (en) * | 2013-03-29 | 2014-10-01 | 中原工学院 | Laser-assisted distance measuring device and method for single-sight-point video monitoring |
| CN104079868B (en) * | 2013-03-29 | 2017-06-30 | 中原工学院 | The laser assisted range unit and method of a kind of single-view video monitoring |
| CN103292711A (en) * | 2013-05-30 | 2013-09-11 | 国家电网公司 | Displacement monitoring device for trolley of switch cabinet |
| CN104165592A (en) * | 2013-05-30 | 2014-11-26 | 国家电网公司 | Switch cabinet trolley displacement monitoring method |
| CN105403194A (en) * | 2015-12-13 | 2016-03-16 | 重庆桑耐美光电科技有限公司 | Optical calibration distance measuring and length measuring device and distance measuring and length measuring method |
| CN110906866A (en) * | 2019-11-13 | 2020-03-24 | 浙江海洋大学 | Rock mass displacement monitoring device and monitoring method |
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Granted publication date: 20101027 Termination date: 20120209 |