CN103063191B - Optical distance measuring device and optical distance measuring method - Google Patents
Optical distance measuring device and optical distance measuring method Download PDFInfo
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- CN103063191B CN103063191B CN201210191621.3A CN201210191621A CN103063191B CN 103063191 B CN103063191 B CN 103063191B CN 201210191621 A CN201210191621 A CN 201210191621A CN 103063191 B CN103063191 B CN 103063191B
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- sounding rod
- measured target
- baffle
- distance
- slit
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- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention provides an optical distance measuring device applied to an optical distance measuring method. The optical distance measuring device comprises a first measuring rod, a second measuring rod, two baffle plates and a slit, wherein the distance from the first measuring rod to a measured target is a distance x to be measured; the second measuring rod is parallel to the first measuring rod, the space between the first measuring rod and the second measuring rod is a, and are on the same level with the measured target; the first measuring rod is placed between the second measuring rod and the measured target; the two baffle plates, namely, a first baffle plate and a second baffle plate, are both placed on the first measuring rod, and the two baffle plates can transversely move along the first measuring rod; the slit is formed in the second measuring rod and can transversely move along the second measuring rod; when the symmetry of dimension of the measured target relative to the first baffle plate and the second baffle plate is observed through the slit, the positions of the first baffle plate and the second baffle plate on the second measuring rod are recorded, the space between the two positions is y, the space between the first baffle plate and the second baffle plate is h, and the distance to be measured can be calculated according to a formula shown as x=ah/(y-h).
Description
Technical field
The present invention relates to a kind of distance measuring equipment and method, particularly the anallatic device and method of one.
Background technology
Distance is an important measurement in measuring, and now, the method for range observation mainly contains three kinds: directly measure method, tacheometry, electromagnetic distance measurement.Directly the method for measuring is subject to landform restriction, when measuring longer distance, and more time-consuming, effort; Tacheometry operation inconvenience, is suitable for the close-in measurement of low precision; What electromagnetic distance measurement application was wider is optical ranging, be divided into direct method and phase ranging, namely direct method is measured light and is come and gone the time required for target, then calculates distance by the light velocity and air index, and the phase differential that namely phase ranging measures transmitting and receiving light wave obtains range-to-go.More difficult because the measurement light in direct measuring method comes and goes the mensuration of time required for target, so conventional optical ranging method is phase ranging.In existing optical ranging method, measuring object must be vertical with emergent light, otherwise return signal is too faint cannot obtain accurate distance; On the other hand, the dependence of existing optical ranging method to environment is higher, e.g., if measured target surface diffuse reflectance is too serious, then cannot receive return signal; If measured target be light source, hole etc. cannot the object of reflection ray time, then cannot measure.
Summary of the invention
In view of this, the invention provides a kind of optical distance measurement apparatus and method, to realize simple, convenient and accurate range observation, and solve the problem that measured target can not be light source, hole etc.
The feature of a kind of optical distance measurement apparatus provided by the invention is: comprising: the first sounding rod, and the distance between measured target is testing distance; Second sounding rod, parallel with the first sounding rod and in the same plane with measured target, the first sounding rod three, the first sounding rod is between this second sounding rod and measured target; Two baffle plates, being all positioned on the first sounding rod and position all can along the first sounding rod translation, respectively as the first baffle plate, second baffle; Slit, being positioned at also can along the second sounding rod translation on the second sounding rod, observe the position that the first baffle plate and second baffle block measured target respectively, when observing measured target and being symmetrical about first gear board size, recording the now slit position be on the second sounding rod is primary importance; When observing measured target about second baffle size symmetrical, recording the now slit position be on the second sounding rod is the second place, distance between primary importance and the second place is y, distance between first baffle plate and second baffle is h, spacing between first sounding rod and the second sounding rod is a, testing distance is x, and testing distance can calculate according to formula x=ah/ (y-h).
Further, optical distance measurement apparatus provided by the invention can also have such feature: the second sounding rod is provided with scale, directly can read the distance y between primary importance and the second place.
Further, optical distance measurement apparatus provided by the invention can also have such feature: the first sounding rod is provided with scale, directly can read the distance h between the first baffle plate and second baffle.
Further, optical distance measurement apparatus provided by the invention can also have such feature: the shape of baffle plate is rectangular slat, the color lightness of baffle plate and the color lightness of measured target inconsistent.
Further, optical distance measurement apparatus provided by the invention can also have such feature: the first baffle plate and second baffle not only must to be less than measured target to the subtended angle of slit to the subtended angle of slit respectively and to be greater than measured target to 1/3 of the subtended angle of slit.
Further, optical distance measurement apparatus provided by the invention can also have such feature: measured target is light source.
Further, optical distance measurement apparatus provided by the invention can also have such feature: measured target is hole.
In addition, the feature of a kind of optical ranging method provided by the invention is: adopt the first sounding rod to specify that distance between itself and measured target is for testing distance; Adopt parallel with the first sounding rod and in the same plane with measured target, the first sounding rod three, the first sounding rod is in the second sounding rod between this second sounding rod and measured target; Employing is all positioned on the first sounding rod and position and all can comes respectively as the first baffle plate, second baffle along two baffle plates of the first sounding rod translation; Adopt and to be positioned on the second sounding rod and can to observe along the slit of the second sounding rod translation the position that the first baffle plate and second baffle block measured target, when observing measured target and being symmetrical about first gear board size, recording the now slit position be on the second sounding rod is primary importance; When observing measured target about second baffle size symmetrical, recording the now slit position be on the second sounding rod is the second place, distance between primary importance and the second place is y, distance between first baffle plate and second baffle is h, spacing between first sounding rod and the second sounding rod is a, testing distance is x, and testing distance can calculate according to formula x=ah/ (y-h).
Further, optical ranging method provided by the invention can also have such feature: the first baffle plate and second baffle not only must to be less than measured target to the subtended angle of slit to the subtended angle of slit respectively and to be greater than measured target to 1/3 of the subtended angle of slit.
Invention effect and effect
Optical measuring device provided by the invention and method are measured by the aiming of slit, measuring accuracy is high, apparatus structure is simple, measurement cost is low, measuring process flexible and convenient, practical, measuring object can be that light source, hole etc. cannot the objects of reflection ray, less to the dependence of environment, application scenario is wider.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention's optical distance measurement apparatus in an embodiment;
Fig. 2 is the parameter schematic diagram of the present invention's optical distance measurement apparatus in an embodiment;
Fig. 3 is the present invention's the second sounding rod in an embodiment and the structural representation of slit;
Fig. 4 is the present invention's the first sounding rod in an embodiment and the structural representation of two baffle plates;
Fig. 5 is the present invention's optical ranging eye-observation effect schematic diagram in an embodiment.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is elaborated.
Fig. 1 is the structural representation of the optical distance measurement apparatus in the present embodiment.As shown in Figure 1, the shape of measured target 1 is circle, color is white, and the color of two baffle plates is black.A kind of optical distance measurement apparatus corresponding with optical ranging method comprises: the first sounding rod 2, second sounding rod 5, first baffle plate 3, second baffle 4, slit 6.Wherein, the first sounding rod 2 and the second sounding rod 5 are all provided with scale, and both are parallel to each other.Measured target 1, first sounding rod 2, second sounding rod 5 three is in the same plane.First baffle plate 3 and second baffle 4 are all black, and being both in also can along first its position of sounding rod 2 upper and lower translation on the first sounding rod 2, and slit 6 is on the second sounding rod 5, also can along second its position of sounding rod 5 upper and lower translation.
Fig. 2 is the parameter schematic diagram of the optical distance measurement apparatus in the present embodiment.Fig. 5 is the present invention's optical ranging eye-observation effect schematic diagram in an embodiment.As Fig. 2, shown in 5, during measurement, first according to the position of measured target 1, to specify by it to the distance measured target 1 to be testing distance x with the first sounding rod 2, fix according to height control first baffle plate 3 of measured target 1 and second baffle 4 to proper height, the distance read between the two is h.The height of upper and lower translation slit on the second sounding rod, when human eye observes the first baffle plate 3 size symmetrical described in measured target 1 by slit, recording the now slit position be on the second sounding rod 5 is primary importance; When observing described measured target 1 about described second baffle 4 size symmetrical, recording the position that now slit is on described second sounding rod 5 is the second place, the distance read between primary importance and the second place is y, distance between first sounding rod 2 and the second sounding rod 5 is a, then, testing distance can be calculated by formula x=ah/ (y-h).
Fig. 3 is the structural representation of the second sounding rod in the present embodiment and slit; Fig. 4 is the structural representation of the first sounding rod in the present embodiment and two baffle plates.As shown in Figure 3,4, the first baffle plate 3, second baffle 4 are all rectangular slat, and both color lightness and the color lightness of measured target 1 exist obvious difference.
Realization shows, when the first baffle plate 3, second baffle 4 be not only less than the subtended angle of measured target 1 pair of slit 6 to the subtended angle of slit 6 but also be greater than the subtended angle of 1/3 times of measured target to slit 6 respectively, human eye the most easily distinguishes that whether measured target is symmetrical about baffle dimensions, so the testing distance that optical distance measurement apparatus provided by the invention measures under this condition is the most accurate.
The close together of measured target in the present embodiment 1 and observation slit, can also fill an eyeglass of looking in the distance to realize telemeasurement when both distant time on slit.
No matter measured target 1 is hole, light source or concrete things, and no matter the shape of measured target is symmetrical or asymmetric, and the optical distance measurement apparatus provided in the present embodiment and method can both realize Measurement accuracy.
Embodiment effect and effect
Baffle plate is placed in and measures between object and sounding rod by the optical distance measurement apparatus in the present embodiment and method, along sounding rod travelling slit while being observed by the slit on sounding rod by human eye, two positions of slit when the baffle plate observed respectively according to human eye blocks the line of symmetry of distance up and down of measured target, obtain the distance between these two positions, thus calculate the distance of object to sounding rod.Simplicity of design is reasonable, measures cost low, measuring process flexible and convenient, practical, and the interference performance of environment resistant is strong, and application scenario is wider.
Claims (9)
1. an optical distance measurement apparatus, is characterized in that, comprising:
First sounding rod, and the distance between measured target is testing distance;
Second sounding rod, parallel with described first sounding rod and in the same plane with described measured target, described first sounding rod three, described first sounding rod is between this second sounding rod and described measured target;
Two baffle plates, to be all positioned on described first sounding rod and all can along described first sounding rod translation, respectively as the first baffle plate, second baffle, the color lightness of described baffle plate and the color lightness of described measured target inconsistent; And
Slit, being positioned at also can along described second sounding rod translation on described second sounding rod, observe the position that described first baffle plate and described second baffle block described measured target respectively, when observing described measured target and being symmetrical about described first gear board size, recording the now slit position be on described second sounding rod is primary importance; When observing described measured target about described second baffle size symmetrical, recording the now slit position be on described second sounding rod is the second place, distance between described primary importance and the described second place is y, distance between described first baffle plate and described second baffle is h, spacing between described first sounding rod and described second sounding rod is a, described testing distance is x, and described testing distance can calculate according to formula x=ah/ (y-h).
2. optical distance measurement apparatus according to claim 1, is characterized in that:
Wherein, described second sounding rod is provided with scale, directly can read the distance y between described primary importance and the described second place.
3. optical distance measurement apparatus according to claim 1, is characterized in that:
Wherein, described first sounding rod is provided with scale, directly can read the distance h between described first baffle plate and described second baffle.
4. optical distance measurement apparatus according to claim 1, is characterized in that:
Wherein, the shape of described baffle plate is rectangular slat.
5. optical distance measurement apparatus according to claim 1, is characterized in that:
Wherein, described first baffle plate and described second baffle not only must to be less than described measured target to the subtended angle of slit to the subtended angle of described slit respectively and to be greater than described measured target to 1/3 of the subtended angle of slit.
6. optical distance measurement apparatus according to claim 1, is characterized in that:
Wherein, described measured target is light source.
7. optical distance measurement apparatus according to claim 1, is characterized in that:
Wherein, described measured target is hole.
8. an optical ranging method, is characterized in that:
Adopt the first sounding rod to specify that distance between itself and measured target is for testing distance;
Adopt parallel with described first sounding rod and in the same plane with described measured target, described first sounding rod three, described first sounding rod is in the second sounding rod between this second sounding rod and described measured target;
Employing is all positioned on described first sounding rod and position and all can comes respectively as the first baffle plate, second baffle along two baffle plates of described first sounding rod translation; And
Adopt and to be positioned on described second sounding rod and can along the slit of described second sounding rod translation to observe the position that described first baffle plate and described second baffle block described measured target, when observing described measured target and being symmetrical about described first gear board size, recording the now slit position be on described second sounding rod is primary importance; When observing described measured target about described second baffle size symmetrical, recording the now slit position be on described second sounding rod is the second place, distance between described primary importance and the described second place is y, distance between described first baffle plate and described second baffle is h, spacing between described first sounding rod and described second sounding rod is a, described testing distance is x, and described testing distance can calculate according to formula x=ah/ (y-h).
9. optical ranging method according to claim 8, is characterized in that:
Wherein, described first baffle plate and described second baffle not only must to be less than described measured target to the subtended angle of slit to the subtended angle of described slit respectively and to be greater than described measured target to 1/3 of the subtended angle of slit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210191621.3A CN103063191B (en) | 2012-06-12 | 2012-06-12 | Optical distance measuring device and optical distance measuring method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210191621.3A CN103063191B (en) | 2012-06-12 | 2012-06-12 | Optical distance measuring device and optical distance measuring method |
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| Publication Number | Publication Date |
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| CN103063191A CN103063191A (en) | 2013-04-24 |
| CN103063191B true CN103063191B (en) | 2015-02-11 |
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| CN201210191621.3A Expired - Fee Related CN103063191B (en) | 2012-06-12 | 2012-06-12 | Optical distance measuring device and optical distance measuring method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| AT411277B (en) * | 2001-08-09 | 2003-11-25 | Plasser Bahnbaumasch Franz | MACHINE AND METHOD FOR DETECTING THE THRESHOLD POSITION OF A JOINT |
| CN2854501Y (en) * | 2005-07-14 | 2007-01-03 | 杨序杰 | Dendrometer |
| CN101749988B (en) * | 2009-12-17 | 2012-01-25 | 山东农业大学 | Device for efficiently measuring tree height |
| JP5809390B2 (en) * | 2010-02-03 | 2015-11-10 | 株式会社リコー | Ranging / photometric device and imaging device |
| CN102207363A (en) * | 2011-03-24 | 2011-10-05 | 北京林业大学 | Tree height measuring triangular rule and application method thereof |
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