CN103063191A - 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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- CN103063191A CN103063191A CN2012101916213A CN201210191621A CN103063191A CN 103063191 A CN103063191 A CN 103063191A CN 2012101916213 A CN2012101916213 A CN 2012101916213A CN 201210191621 A CN201210191621 A CN 201210191621A CN 103063191 A CN103063191 A CN 103063191A
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- slit
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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 a kind of anallatic device and method.
Background technology
Distance is 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, measure long apart from the time, more time-consuming, effort; Tacheometry operation inconvenience is suitable for the close-in measurement of low precision; What the electromagnetic distance measurement application was wider is optical ranging, be divided into direct method and phase ranging, direct method is namely measured light and is come and gone the required time of target, then calculates distance by the light velocity and air index, and phase ranging is namely measured the phase differential that transmits and receives light wave and got range-to-go.Because it is relatively more difficult that the measurement light in the direct measuring method comes and goes the mensuration of required time of target, so optical ranging method commonly used is phase ranging.In existing optical ranging method, measuring object must be vertical with emergent light, can't obtain accurate distance otherwise return signal is too faint; On the other hand, existing optical ranging method is higher to the dependence of environment, as, if the measured target surface diffuse reflectance is too serious, then can't receive return signal; If measured target be light source, hole etc. can't reflection ray object the time, then can't measure.
Summary of the invention
In view of this, the invention provides a kind of optical distance measurement apparatus and method, simple to realize, convenient and accurate range observation, and the solution measured target can not be the problem in light source, hole etc.
A kind of optical distance measurement apparatus provided by the invention is characterised in that: comprising: the first sounding rod, and the distance between the measured target is testing distance; The 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 the measured target; Two baffle plates all are positioned on the first sounding rod and the position all can be along the first sounding rod translation, respectively as the first baffle plate, second baffle; Slit, being positioned at also can be along the second sounding rod translation on the second sounding rod, observe respectively the position that the first baffle plate and second baffle block measured target, when observing measured target about the first baffle dimensions symmetry, recording the position that this moment, slit was on the second sounding rod is primary importance; When observing measured target about second baffle size symmetry, recording the position that this moment, slit was on the second sounding rod is the second place, distance between primary importance and the second place is y, distance between the first baffle plate and the second baffle is h, spacing between the 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, can directly 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, can directly read the distance h between the first baffle plate and the second baffle.
Further, optical distance measurement apparatus provided by the invention can also have such feature: baffle plate to be shaped as rectangle rectangular, the color lightness of baffle plate and the color lightness of measured target are inconsistent.
Further, optical distance measurement apparatus provided by the invention can also have such feature: the first baffle plate and second baffle respectively to the subtended angle of slit must be not only less than measured target to the subtended angle of slit but also 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 the hole.
In addition, a kind of optical ranging method provided by the invention is characterised in that: adopt the first sounding rod to stipulate that the distance between itself and the measured target is 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 the measured target; Employing all is positioned on the first sounding rod and the position all can be come along two baffle plates of the first sounding rod translation respectively as the first baffle plate, second baffle; Employing is positioned on the second sounding rod and can observes the position that the first baffle plate and second baffle block measured target along the slit of the second sounding rod translation, when observing measured target about the first baffle dimensions symmetry, recording the position that this moment, slit was on the second sounding rod is primary importance; When observing measured target about second baffle size symmetry, recording the position that this moment, slit was on the second sounding rod is the second place, distance between primary importance and the second place is y, distance between the first baffle plate and the second baffle is h, spacing between the 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 respectively to the subtended angle of slit must be not only less than measured target to the subtended angle of slit but also 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, the measurement cost is low, the measuring process flexible and convenient, practical, measure object and can be the object that light source, hole etc. can't reflection rays, dependence to environment is less, and the application scenario is wider.
Description of drawings
Fig. 1 is the structural representation of the present invention's optical distance measurement apparatus in an embodiment;
Fig. 2 is the parameter synoptic diagram of the present invention's optical distance measurement apparatus in an embodiment;
Fig. 3 be the present invention in an embodiment the second sounding rod 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 synoptic 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 be shaped as circle, color of measured target 1 are 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, the second sounding rod 5, the first baffle plates 3, second baffle 4, slit 6.Wherein, all be provided with scale on the first sounding rod 2 and the second sounding rod 5, both are parallel to each other.Measured target 1, the first sounding rod 2, the second sounding rod 5 threes are in the same plane.The first baffle plate 3 and second baffle 4 all are black, and both being in also can be along its position of the first sounding rod 2 upper and lower translations on the first sounding rod 2, and slit 6 is on the second sounding rod 5, also can be along its position of the second sounding rod 5 upper and lower translations.
Fig. 2 is the parameter synoptic diagram of the optical distance measurement apparatus in the present embodiment.Fig. 5 is the present invention's optical ranging eye-observation effect synoptic diagram in an embodiment.Such as Fig. 2, shown in 5, during measurement, at first according to the position of measured target 1, stipulate that with the first sounding rod 2 be testing distance x by it to the distance the measured target 1, height control the first baffle plate 3 and second baffle 4 to proper height according to measured target 1 are fixed, and the distance of reading between the two is h.The height of upper and lower translation slit on the second sounding rod, when human eye was observed measured target 1 described the first baffle plate 3 sizes symmetry by slit, recording the position that this moment, slit was on the second sounding rod 5 was primary importance; When observing described measured target 1 about described second baffle 4 sizes symmetry, recording the position that this moment, slit was on described the second sounding rod 5 is the second place, the distance of reading between primary importance and the second place is y, distance between the first sounding rod 2 and the second sounding rod 5 is a, then, can calculate testing distance by formula x=ah/ (y-h).
Fig. 3 is the second sounding rod in the present embodiment and the structural representation of slit; Fig. 4 is the first sounding rod in the present embodiment and the structural representation of two baffle plates.Shown in Fig. 3,4, the first baffle plate 3, second baffle 4 all are that rectangle is rectangular, and there is obvious difference in the color lightness of both color lightness and measured target 1.
Realization shows, when the first baffle plate 3, second baffle 4 respectively to the subtended angle of slit 6 not only less than the subtended angle of 1 pair of slit 6 of measured target but also greater than 1/3 times of measured target during to the subtended angle of slit 6, whether the easiest measured target of distinguishing of human eye 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 the measured target 1 in the present embodiment and observation slit can also fill the eyeglass of looking in the distance at slit and realize telemeasurement in the time of both distant.
No matter measured target 1 is the hole, light source or concrete things, no matter measured target be shaped as symmetrically or asymmetric, the optical distance measurement apparatus that provides in the present embodiment and method can both realize Measurement accuracy.
Embodiment effect and effect
Optical distance measurement apparatus in the present embodiment and method place baffle plate and measure between object and the sounding rod, when being observed by the slit on the sounding rod by human eye along the sounding rod travelling slit, the baffle plate of observing respectively according to human eye block measured target up and down apart from line of symmetry the time slit two positions, obtain the distance between these two positions, thereby calculate object to the distance of sounding rod.Simplicity of design is reasonable, and it is low to measure cost, the measuring process flexible and convenient, and practical, the interference performance of anti-environment is strong, and the application scenario is wider.
Claims (9)
1. an optical distance measurement apparatus is characterized in that, comprising:
The first sounding rod, and the distance between the measured target is testing distance;
The second sounding rod, parallel with described the first sounding rod and in the same plane with described measured target, described the first sounding rod three, described the first sounding rod is between this second sounding rod and the described measured target;
Two baffle plates all are positioned on described the first sounding rod and all can be along described the first sounding rod translation, respectively as the first baffle plate, second baffle; And
Slit, being positioned at also can be along described the second sounding rod translation on described the second sounding rod, observe respectively the position that described the first baffle plate and described second baffle block described measured target, when observing described measured target about described the first baffle dimensions symmetry, recording the position that this moment, slit was on described the second sounding rod is primary importance; When observing described measured target about described second baffle size symmetry, recording the position that this moment, slit was on described the second sounding rod is the second place, distance between described primary importance and the described second place is y, distance between described the first baffle plate and the described second baffle is h, spacing between described the first sounding rod and described the 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 the second sounding rod is provided with scale, can directly 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 the first sounding rod is provided with scale, can directly read the distance h between described the first baffle plate and the described second baffle.
4. optical distance measurement apparatus according to claim 1 is characterized in that:
Wherein, described baffle plate to be shaped as rectangle rectangular, the color lightness of described baffle plate and the color lightness of described measured target are inconsistent.
5. optical distance measurement apparatus according to claim 1 is characterized in that:
Wherein, described the first baffle plate and described second baffle respectively to the subtended angle of described slit must be not only less than described measured target to the subtended angle of slit but also 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 the hole.
8. optical ranging method is characterized in that:
Adopt the first sounding rod to stipulate that the distance between itself and the measured target is testing distance;
Adopt parallel with described the first sounding rod and in the same plane with described measured target, described the first sounding rod three, described the first sounding rod is in the second sounding rod between this second sounding rod and the described measured target;
Employing all is positioned on described the first sounding rod and the position all can be come along two baffle plates of described the first sounding rod translation respectively as the first baffle plate, second baffle; And
Employing is positioned on described the second sounding rod and can observes the position that described the first baffle plate and described second baffle block described measured target along the slit of described the second sounding rod translation, when observing described measured target about described the first baffle dimensions symmetry, recording the position that this moment, slit was on described the second sounding rod is primary importance; When observing described measured target about described second baffle size symmetry, recording the position that this moment, slit was on described the second sounding rod is the second place, distance between described primary importance and the described second place is y, distance between described the first baffle plate and the described second baffle is h, spacing between described the first sounding rod and described the 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 the first baffle plate and described second baffle respectively to the subtended angle of described slit must be not only less than described measured target to the subtended angle of slit but also 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 |
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| CN201210191621.3A CN103063191B (en) | 2012-06-12 | 2012-06-12 | Optical distance measuring device and optical distance measuring method |
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| CN103063191A true CN103063191A (en) | 2013-04-24 |
| CN103063191B CN103063191B (en) | 2015-02-11 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003074004A (en) * | 2001-08-09 | 2003-03-12 | Central Japan Railway Co | Device and method for detecting cross tie position on track |
| CN2854501Y (en) * | 2005-07-14 | 2007-01-03 | 杨序杰 | Dendrometer |
| CN101749988A (en) * | 2009-12-17 | 2010-06-23 | 山东农业大学 | Device for efficiently measuring tree height |
| CN102207363A (en) * | 2011-03-24 | 2011-10-05 | 北京林业大学 | Tree height measuring triangular rule and application method thereof |
| EP2375282A1 (en) * | 2010-02-03 | 2011-10-12 | Ricoh Company, Ltd. | Distance measurement and photometry device, and imaging apparatus |
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2012
- 2012-06-12 CN CN201210191621.3A patent/CN103063191B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003074004A (en) * | 2001-08-09 | 2003-03-12 | Central Japan Railway Co | Device and method for detecting cross tie position on track |
| CN2854501Y (en) * | 2005-07-14 | 2007-01-03 | 杨序杰 | Dendrometer |
| CN101749988A (en) * | 2009-12-17 | 2010-06-23 | 山东农业大学 | Device for efficiently measuring tree height |
| EP2375282A1 (en) * | 2010-02-03 | 2011-10-12 | Ricoh Company, Ltd. | Distance measurement and photometry device, and imaging apparatus |
| 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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| CN103063191B (en) | 2015-02-11 |
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