CN114636086A - Handheld measuring device for engineering surveying and mapping - Google Patents
Handheld measuring device for engineering surveying and mapping Download PDFInfo
- Publication number
- CN114636086A CN114636086A CN202210288180.2A CN202210288180A CN114636086A CN 114636086 A CN114636086 A CN 114636086A CN 202210288180 A CN202210288180 A CN 202210288180A CN 114636086 A CN114636086 A CN 114636086A
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- Prior art keywords
- handle
- slot
- shell
- sliding
- rear surface
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- 238000013507 mapping Methods 0.000 title claims abstract description 23
- 229920001296 polysiloxane Polymers 0.000 claims 1
- 238000000034 method Methods 0.000 description 9
- 238000005259 measurement Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M13/00—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles
- F16M13/04—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles for supporting on, or holding steady relative to, a person, e.g. by chains, e.g. rifle butt or pistol grip supports, supports attached to the chest or head
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
Abstract
The invention discloses a handheld measuring device for engineering surveying and mapping, which comprises a measuring instrument, wherein the shell of the measuring instrument is a rectangular box, a display screen and an operation keyboard are arranged on the front surface of the shell, the operation keyboard is positioned below the display screen, the shell is provided with a handle, the lower surface of the shell is fixedly provided with two slide rails, the left side surface and the right side surface of the handle are both provided with a slide groove, the top end of the handle can slide into the space between the two guide rails from one end of the slide rail, the rear surface of the shell is provided with a first slot, the front surface and the rear surface of the handle are both provided with sliding blocks, the handle also comprises a limiting piece, the vertical part of the limiting piece is embedded into the slot and is fixedly connected with the rear surface of the shell through a bolt, the horizontal part of the limiting piece is embedded between the two sliding rails and is fixedly connected with the lower surface of the shell through bolts. The portable multifunctional pen has the advantages of flexible and various using modes and convenience in carrying.
Description
Technical Field
The invention relates to the technical field of structural improvement of measuring devices, in particular to a handheld measuring device for engineering surveying and mapping.
Background
In engineering surveying and mapping, various auxiliary measuring tools are often used for surveying the topography and landform of a construction site, the most common is the measurement of the length and distance, when the distance measurement is carried out outdoors, because various outdoor ground conditions are complicated, such as grasslands, hillsides, rugged construction sites and the like, a portable and convenient handheld measuring device is needed for measurement, meanwhile, the requirement of long measuring distance can be met, and the portable and convenient handheld measuring device has the characteristics of time saving and convenience;
hand-held type measuring device for engineering survey and drawing is the instrument commonly used in the engineering survey and drawing, and current hand-held type measuring device for engineering survey and drawing is when carrying, because length is longer, is not convenient for accomodate, is unfavorable for the user to carry, has reduced hand-held type measuring device for engineering survey and drawing's practicality.
Disclosure of Invention
The invention aims to solve the problems and designs a handheld measuring device for engineering surveying and mapping.
The technical scheme of the invention is that the handheld measuring device for engineering surveying and mapping comprises a measuring instrument, a casing of the measuring instrument is a rectangular box, a display screen and an operating keyboard are arranged on the front surface of the casing, the operating keyboard is positioned below the display screen, a handle is arranged on the casing,
the handle is characterized in that two sliding rails are fixedly mounted on the lower surface of the shell, the two sliding rails are parallel to each other, one ends of the sliding rails extend to the rear surface of the shell and are aligned with the rear surface of the shell, the other ends of the sliding rails point to the front surface of the shell, the other ends of the two sliding rails are fixedly connected through a baffle, sliding grooves are formed in the left side surface and the right side surface of the handle and are respectively communicated with the front surface and the rear surface of the handle, the sliding grooves are close to the upper end of the handle, the top end of the handle can slide into the space between the two guide rails from one ends of the sliding rails, the upper end surface of the handle is tightly attached to the lower surface of the shell, and the positions and the sizes of the sliding grooves are matched with those of the sliding rails and ensure that the sliding rails can penetrate through the sliding grooves and form interference fit with the sliding grooves;
the rear surface of the shell is provided with a first slot, one end of the first slot is communicated with the lower surface of the shell, the other end of the first slot points to the upper surface of the shell vertically upwards, sliding blocks are arranged on the front surface and the rear surface of the handle, the shape of each sliding block is matched with that of the first slot, the sliding blocks can be ensured to be inserted into the first slot upwards from the lower surface of the shell and form interference fit with the first slot, and the first slot and the two guide rails are positioned in the same vertical plane;
the handle is characterized by further comprising a limiting part, the limiting part is a plate with an L-shaped shape, the vertical part of the limiting part is embedded into the slot and is fixedly connected with the rear surface of the shell through a bolt, the horizontal part of the limiting part is embedded between the two sliding rails and is fixedly connected with the lower surface of the shell through a bolt, and the horizontal part of the limiting part abuts against the rear surface of the handle.
The sum of the distance value between the front surface and the rear surface of the handle and the length value of the horizontal part of the limiting part is larger than the length value of the slide rail, and the horizontal part of the limiting part can extrude and fix the upper end of the handle in an area enclosed by the baffle and the two slide rails.
The sliding rail is a long-strip-shaped guide rail with an L-shaped longitudinal section, the vertical part of the sliding rail is fixedly connected with the lower surface of the shell, the horizontal part of the sliding rail is embedded into the sliding groove, the horizontal part of the sliding rail and the sliding groove form interference fit, and the handle can slide along the length direction of the horizontal part of the sliding rail.
The sum of the distance value of the upper surface and the lower surface of the handle and the length value of the vertical part of the limiting part is larger than the length value of the first slot, when the sliding block on the front surface of the handle is upwards inserted into the first slot from the lower surface of the shell, the vertical part of the limiting part can extrude and fix the handle in the first slot.
The slot is the rectangular form recess that sets up on the shell rear surface, two gibs of fixed mounting in the slot one, the length direction of gib block is the same with the length direction of slot one, the gib block extends to the other end by the one end of slot one, the gib block with the slider phase-match and guarantee that the gib block can imbed the slider and form interference fit with it.
The sliding block is of a long-strip-shaped structure with an I-shaped section, the length direction of the sliding block is the same as that of the handle, and the length of the sliding block is slightly smaller than that of the handle.
And a rubber layer or a silica gel layer is laid on the surface of the handle.
The handle is further provided with a supporting cover which is of a long-strip-shaped plate-shaped structure, the length of the supporting cover is the same as that of the handle, a second slot is formed in the front surface of the supporting cover, the length direction of the second slot is the same as that of the handle, the upper end of the second slot is communicated with the upper surface of the supporting cover, the lower end of the second slot is communicated with the lower surface of the supporting cover, the second slot is identical to that of the first slot in structure, a sliding block on the rear surface of the handle can be inserted into the second slot through the upper surface or the lower surface of the supporting cover to form interference fit with the second slot, and a handle is fixedly installed on the rear surface of the supporting cover.
After the sliding block on the rear surface of the handle is inserted into the second sliding groove, the supporting cover can be fixedly connected with the rear surface of the handle through a bolt, and the handle is n-shaped.
Advantageous effects
The handheld measuring device for engineering surveying and mapping manufactured by the technical scheme of the invention has the following advantages:
1. the device forms a handheld measuring device with a detachable handle by utilizing the structural combination of a slide rail, a baffle, a handle, a slide groove and a limiting piece; during measurement, a worker can install the handle on the lower surface of the shell of the distance measuring instrument and operate the measuring instrument in a handheld mode; after the measurement is finished, the worker can disassemble the handle and insert the handle on the rear surface of the shell, so that the technical effect of convenient carrying is realized;
2. the portable measuring device is formed by the structural combination of the first slot, the sliding block, the second slot, the limiting piece, the support cover and the handle, when measurement is not needed, the sliding block on the front surface of the handle can be inserted into the first slot on the rear surface of the shell, the sliding block on the rear surface of the handle is inserted into the second slot on the front surface of the support cover, and a worker can lift the whole measuring device through the handle, so that the technical effect of convenient carrying is achieved;
3. the device has the advantages of simple structure, strong practicability, flexible use mode and convenient carrying.
Drawings
FIG. 1 is a front view of a handheld measuring device for engineering surveying and mapping according to the present invention in a handheld state;
FIG. 2 is a rear view of a handheld measuring device for engineering surveying and mapping in a handheld state;
FIG. 3 is a left side view of a handheld measuring device for engineering surveying and mapping according to the present invention in a handheld state;
FIG. 4 is a bottom view of a handheld measuring device for engineering surveying and mapping according to the present invention in a handheld state;
FIG. 5 is a perspective view of the handle of the present invention;
FIG. 6 is a schematic structural diagram of the position limiting element according to the present invention;
FIG. 7 is a bottom view of a handheld surveying instrument for engineering surveying and mapping according to the invention in a hand-held state;
FIG. 8 is an exploded view of a handheld measuring device for engineering surveying and mapping according to the present invention in a hand-held state;
FIG. 9 is a schematic structural view of embodiment 2 of the present invention;
in the figure, 1, a measuring instrument; 2. a display screen; 3. operating a keyboard; 4. a handle; 5. a slide rail; 6. a baffle plate; 7. a chute; 8. a first slot; 9. a slider; 10. a limiting member; 11. a guide bar; 12. supporting the cover; 13. a second slot; 14. a handle; 15. and connecting the bolts.
Detailed Description
Example 1
the first creation point of this application lies in, two slide rails 5 of fixed mounting on the lower surface of shell, and two slide rails are parallel to each other, the one end of slide rail is extended to the rear surface of shell and is aligned with it, the front surface of the directional shell of the other end of slide rail, 6 fixed connection of baffle are passed through to the other end of two slide rails, all be equipped with spout 7 on the left surface of handle and the right flank, the spout communicates with the front surface and the rear surface of handle respectively, the spout is close to the upper end of handle, the top of handle can be slided into between two guide rails by the one end of slide rail, the up end of handle closely laminates with the lower surface of shell, the position and the size phase-match of spout and slide rail guarantee that the slide rail can run through the spout and form interference fit with it, be equipped with slot one 8 on the rear surface of shell, the one end of slot one communicates with the lower surface of shell, the other end of the first slot vertically and upwards points to the upper surface of the shell, sliding blocks 9 are arranged on the front surface and the rear surface of the handle, the shape of each sliding block is matched with that of the first slot, the sliding blocks can be ensured to be upwards inserted into the first slot from the lower surface of the shell and form interference fit with the first slot, and the first slot and the two guide rails are located in the same vertical plane;
the second creation point of this application still lies in, installs locating part 10 on the shell, the locating part is the plate of shape for L shape, the vertical partial embedding slot of locating part is connected through the rear surface fixed of bolt and shell in the lump, the horizontal part of locating part imbeds between two slide rails and is connected through the lower fixed surface of bolt and shell, the horizontal part of locating part withstands the rear surface of handle.
The electronic device adopted by the technical scheme comprises:
a measuring instrument and a matched power supply thereof;
the electronic devices are all existing products, the technical scheme of the application has no special requirements and changes on the structures of the electronic devices, and the electronic devices all belong to conventional electronic equipment;
in the implementation process of the technical scheme, a person in the art needs to connect all the electrical components in the present application with a power supply adapted to the electrical components through a wire, and should select an appropriate controller according to actual conditions to meet control requirements, and specific connection and control sequence.
The third creation point of the application is that the sum of the distance value of the front surface and the rear surface of the handle and the length value of the horizontal part of the limiting part is larger than the length value of the sliding rail, and the horizontal part of the limiting part can extrude and fix the upper end of the handle in an area enclosed by the baffle and the two sliding rails, the sliding rail is a long strip-shaped guide rail with an L-shaped longitudinal section, the vertical part of the sliding rail is fixedly connected with the lower surface of the shell, the horizontal part of the sliding rail is embedded into the sliding groove, the horizontal part of the sliding rail is in interference fit with the sliding groove, and the handle can slide along the length direction of the horizontal part of the sliding rail;
the fourth inventive point of the application is that the sum of the distance value of the upper surface and the lower surface of the handle and the length value of the vertical part of the limiting piece is larger than the length value of the first slot, when the sliding block on the front surface of the handle is inserted into the slot from the lower surface of the shell upwards, the vertical part of the limiting piece can extrude and fix the handle in the slot I, the first slot is a strip-shaped groove arranged on the rear surface of the shell, two guide strips 11 are fixedly arranged in the first slot, the length direction of the guide strip is the same as that of the first slot, the guide strip extends from one end of the first slot to the other end, the guide strip is matched with the sliding block and ensures that the guide strip can be embedded into the sliding block and forms interference fit with the sliding block, the sliding block is of a long-strip-shaped structure with an I-shaped section, the length direction of the sliding block is the same as that of the handle, and the length of the sliding block is slightly smaller than that of the handle.
The fifth creation point of this application lies in, still is equipped with the support lid 12 for the handle, the support lid is the platelike structure of rectangular shape, the length of support lid is the same with the length of handle, be equipped with slot two 13 on the front surface of support lid, the length direction of slot two is the same with the length direction of handle, the upper end of slot two and the upper surface intercommunication of support lid, the lower extreme of slot and the lower surface intercommunication of support lid, slot two is the same with the structure of slot one, the slider of handle rear surface can cover upper surface or lower surface through holding in the palm and insert spout two and form interference fit with it, fixed mounting handle 14 on the rear surface of support lid, the slider of handle rear surface inserts behind the spout two, the support lid can be through bolt and handle rear surface fixed connection, the shape of handle is the n font.
In the implementation process of the technical scheme, the handheld state of the whole device is shown in fig. 1-4, at the moment, the handle is installed on the lower surface of the shell, the limiting piece, the two sliding rails and the baffle are matched with each other to extrude and fix the upper end of the handle and the lower surface of the shell together, so that a handheld structure is formed, and a worker uses a measuring instrument to measure in a mode of holding the handle by hands; when the measurement is not needed, a worker can detach the limiting part, then the top end of the handle slides out from the two sliding rails, the process that the handle is detached from the lower surface of the shell is completed, then the sliding block on the front surface of the handle is aligned to the lower end opening of the first slot on the rear surface of the shell, the worker pushes the handle to enable the sliding block on the front surface of the handle to slide upwards and insert into the first slot, the limiting part is fixedly installed on the shell again, the vertical part of the limiting part extrudes and fixes the handle on the first slot, meanwhile, the second slot on the front surface of the support cover is aligned with the sliding block on the rear surface of the handle, the support cover is pushed, the sliding block on the rear surface of the handle is inserted into the second slot in a sliding mode, connection between the handle and the support cover is achieved, structural assembly of a handheld mode of the measurement device is completed, and the structure of the whole device is shown in figures 7 and 8.
Example 2
The support cover and the handle are removed, the connecting bolt 15 is arranged on the lower surface of the handle, and the lower surface of the handle is fixedly installed on a measuring instrument support through the connecting bolt, so that the measuring instrument has a handheld portable measuring and positioning measuring dual measuring mode, the versatility of the measuring instrument is improved, the use is more convenient, and the structure of the device is shown in fig. 9. The rest is the same as in example 1.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.
The technical solutions described above only represent the preferred technical solutions of the present invention, and some possible modifications to some parts of the technical solutions by those skilled in the art all represent the principles of the present invention, and fall within the protection scope of the present invention.
Claims (9)
1. A hand-held measuring device for engineering surveying and mapping, comprising a measuring instrument (1), the housing of which is a rectangular box, a display screen (2) and an operating keyboard (3) are mounted on the front surface of the housing, the operating keyboard is located below the display screen, the housing is equipped with a handle (4), characterized in that,
the handle is characterized in that two sliding rails (5) are fixedly mounted on the lower surface of the shell, the two sliding rails are parallel to each other, one ends of the sliding rails extend to the rear surface of the shell and are aligned with the rear surface of the shell, the other ends of the sliding rails point to the front surface of the shell, the other ends of the two sliding rails are fixedly connected through a baffle (6), sliding grooves (7) are formed in the left side surface and the right side surface of the handle and are respectively communicated with the front surface and the rear surface of the handle, the sliding grooves are close to the upper end of the handle, the top end of the handle can slide into the two guide rails from one ends of the sliding rails, the upper end surface of the handle is tightly attached to the lower surface of the shell, the positions and the sizes of the sliding grooves are matched with those of the sliding rails, and the sliding rails can penetrate through the sliding grooves and form interference fit with the sliding grooves;
a first slot (8) is formed in the rear surface of the shell, one end of the first slot is communicated with the lower surface of the shell, the other end of the first slot is vertically and upwardly directed to the upper surface of the shell, sliding blocks (9) are arranged on the front surface and the rear surface of the handle, the shape of each sliding block is matched with that of the first slot, the sliding blocks can be ensured to be upwardly inserted into the first slot from the lower surface of the shell and form interference fit with the first slot, and the first slot and the two guide rails are located in the same vertical plane;
still include locating part (10), the locating part is the plate that the shape is L shape, the vertical part embedding slot of locating part passes through the bolt and is connected with the rear surface fixed connection of shell in the lump, the horizontal part embedding of locating part is between two slide rails and is connected through the lower fixed surface of bolt and shell, the horizontal part of locating part withstands the rear surface of handle.
2. The handheld measuring device for engineering surveying and mapping as claimed in claim 1, wherein the sum of the distance between the front and rear surfaces of the handle and the length of the horizontal portion of the position-limiting member is greater than the length of the slide rail, and the horizontal portion of the position-limiting member can press and fix the upper end of the handle in an area defined by the baffle and the two slide rails.
3. The handheld measuring device for engineering surveying and mapping as claimed in claim 2, wherein the slide rail is an elongated guide rail with an L-shaped longitudinal section, a vertical portion of the slide rail is fixedly connected with the lower surface of the housing, a horizontal portion of the slide rail is embedded in the slide groove, a horizontal portion of the slide rail forms an interference fit with the slide groove, and the handle is capable of sliding along a length direction of the horizontal portion of the slide rail.
4. The handheld measuring device for engineering surveying and mapping as claimed in claim 1, wherein a sum of a distance value between the upper and lower surfaces of the handle and a length value of the vertical portion of the limiting member is greater than a length value of the first slot, and when the slider on the front surface of the handle is inserted into the first slot from the lower surface of the housing, the vertical portion of the limiting member can press and fix the handle in the first slot.
5. The handheld measuring device for engineering surveying and mapping as claimed in claim 4, wherein the slot is an elongated groove disposed on the rear surface of the housing, two guide bars (11) are fixedly mounted in the slot one, the length direction of the guide bars is the same as the length direction of the slot one, the guide bars extend from one end of the slot one to the other end, and the guide bars are matched with the sliding block and ensure that the guide bars can be inserted into the sliding block and form an interference fit with the sliding block.
6. The hand-held measuring device for engineering surveying and mapping as claimed in claim 5, wherein the sliding block is an elongated structure with an I-shaped cross section, the length direction of the sliding block is the same as the length direction of the handle, and the length of the sliding block is slightly smaller than the length of the handle.
7. The hand-held measuring device for engineering surveying and mapping according to claim 6, wherein a rubber layer or a silicone layer is laid on the surface of the handle.
8. The hand-held measuring device for engineering surveying and mapping as claimed in claim 7, wherein the handle is further equipped with a supporting cover (12), the supporting cover is a long strip-shaped plate-shaped structure, the length of the supporting cover is the same as that of the handle, a second slot (13) is arranged on the front surface of the supporting cover, the length direction of the second slot is the same as that of the handle, the upper end of the second slot is communicated with the upper surface of the supporting cover, the lower end of the slot is communicated with the lower surface of the supporting cover, the structure of the second slot is the same as that of the first slot, a sliding block on the rear surface of the handle can be inserted into the second slot through the upper surface or the lower surface of the supporting cover to form interference fit with the second slot, and a handle (14) is fixedly mounted on the rear surface of the supporting cover.
9. The handheld measuring device for engineering surveying and mapping as claimed in claim 8, wherein after the sliding block on the rear surface of the handle is inserted into the second sliding groove, the supporting cover can be fixedly connected with the rear surface of the handle through a bolt, and the handle is n-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210288180.2A CN114636086A (en) | 2022-03-22 | 2022-03-22 | Handheld measuring device for engineering surveying and mapping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210288180.2A CN114636086A (en) | 2022-03-22 | 2022-03-22 | Handheld measuring device for engineering surveying and mapping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114636086A true CN114636086A (en) | 2022-06-17 |
Family
ID=81949094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210288180.2A Pending CN114636086A (en) | 2022-03-22 | 2022-03-22 | Handheld measuring device for engineering surveying and mapping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114636086A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115143944A (en) * | 2022-07-04 | 2022-10-04 | 山东大学 | Handheld full-section multi-blast-hole space measuring device and using method |
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| CN215339736U (en) * | 2021-06-02 | 2021-12-28 | 吕梁市恒盛橡胶股份有限公司 | Vocs detection device |
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| JP2015042976A (en) * | 2013-07-26 | 2015-03-05 | 独立行政法人国立環境研究所 | Shadow water area observation system |
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