CN212228756U - Hand-held grassland sample ecological investigation equipment - Google Patents
Hand-held grassland sample ecological investigation equipment Download PDFInfo
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- CN212228756U CN212228756U CN202021006380.7U CN202021006380U CN212228756U CN 212228756 U CN212228756 U CN 212228756U CN 202021006380 U CN202021006380 U CN 202021006380U CN 212228756 U CN212228756 U CN 212228756U
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Abstract
The embodiment of the utility model provides a relate to ecological monitoring technology field, disclose the ecological investigation equipment of hand-held type meadow appearance. In the handheld grassland sample ecological investigation equipment provided by the embodiment of the utility model, the grassland biomass measuring equipment comprises a mower shell and a first weighing element; the mower shell is connected with grassland coverage measuring equipment; a processor in the grassland coverage measuring equipment is respectively connected with the camera, the liquid crystal display screen and the memory; also included is a mowing element. It can be seen that, the embodiment of the utility model provides a grassland sample processing tool that a class integrates not only can carry out the operation of coverage measurement including grassland coverage measuring equipment, still can carry out the action of tailorring of ground vegetation including the component of mowing, further acquires sample meadow biomass data through weighing, therefore, can carry out the ecological investigation operation of grassland sample high-efficiently and manifold, has solved the technical problem that does not have a class of better grassland processing tool that integrates at present.
Description
Technical Field
The utility model relates to an ecological monitoring technology field especially relates to the ecological investigation equipment of hand-held type meadow style.
Background
Regarding field monitoring technologies oriented to ecology, grassland science and the like, the current ecological monitoring and ecological investigation means are still relatively original, ground vegetation management behaviors are mostly performed manually, and if the ground vegetation management behaviors are compared, data measurement is performed manually, and ground vegetation cutting is performed manually.
For example, taking the dimension of data measurement as an example, many people measure coverage purely manually.
The coverage is used for representing the horizontal projection size of the ground organs of the plants to the ground, is an important index for describing the structure of the plant community, marks the horizontal space area occupied by the plants and reflects the size of the assimilation area of the plants to a certain extent.
Meanwhile, the coverage is also an important parameter for indicating the change of the ecological environment, and has important indication effect on regional and even global earth surface change, landscape differentiation and the like.
Meanwhile, the quantified coverage information is used in researches such as ecology, hydrology, soil and water conservation and the like.
With respect to conventional data measurements for obtaining coverage, there is a particular visual method, expressed in percentage. However, the visual measurement method is a relatively subjective measurement method, and although simple and easy, the estimation result is closely related to the experience of the person estimating the image, and the estimated coverage error of the person with insufficient experience is large.
Besides the visual measurement method, the method also has objective measurement means such as a graphic sample method, a sampling point interception method, a square viewpoint frame method, a shadow method and the like, and has certain application in vegetation coverage measurement.
Although these objective observation means are accurate, the overall operation is still complex and time-consuming, and the performance is poor in the dimension of data measurement.
For example, taking the dimension of real-time processing of the biomass of the ground vegetation as an example, the ground vegetation is cut manually by multiple persons, and the cut vegetation is taken back to a laboratory to be weighed to obtain biomass data.
It can be seen that there is no better integrated grass processing tool in the grass management dimension to perform grass ecological investigation operations.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem that does not have the grassland processing tool that a class of better integrates in order to carry out the ecological investigation operation in grassland at present, the embodiment of the utility model provides a hand-held type grassland appearance ecological investigation equipment.
In a first aspect, an embodiment of the present invention provides a handheld grassland shelter ecological surveying apparatus, which includes a grassland biomass measuring apparatus and a grassland coverage measuring apparatus;
the lawn biomass measuring device comprises a mower housing and a first weighing element;
the first weighing element is arranged at the top of the mower shell;
the top of the mower shell is detachably connected with the grassland coverage measuring equipment;
the grassland coverage measuring equipment comprises a processor, a camera, a liquid crystal display screen and a memory;
the processor is respectively connected with the camera, the liquid crystal display screen and the memory;
the housing of the mower is hollow to form an accommodating cavity;
the handheld grassland shelter ecological surveying equipment further comprises a mowing element in the accommodating cavity.
Preferably, the mowing element comprises an engine, a blade;
the motor is connected with the blade.
Preferably, the handheld grassland-style ecological survey equipment further comprises a grass collecting box in the accommodating cavity;
the grass outlet of the grass cutting element is aligned with the grass inlet of the grass collecting box.
Preferably, the bottom surface of the grass collecting box is provided with a second weighing element.
Preferably, the grassland coverage measuring apparatus further comprises a spatial localization module, and the processor is connected with the spatial localization module.
Preferably, the grass coverage measurement device further comprises a power source connected to the processor.
Preferably, the power source is a rechargeable lithium battery.
Preferably, a first side of the lawn coverage measuring apparatus is provided with a power switch;
and a Universal Serial Bus (USB) interface is arranged on the second side surface of the grassland coverage measuring equipment.
Preferably, the lawn coverage measuring device is provided with a charging interface on the bottom surface.
Preferably, a signal interface on the mower housing is connected to a signal interface of the lawn coverage measuring device.
The embodiment of the utility model provides a hand-held grassland sample ecological investigation equipment, which comprises a grassland biomass measuring device and a grassland coverage measuring device; the lawn biomass measuring device comprises a mower housing and a first weighing element; the first weighing element is arranged at the top of the mower shell; the top of the mower shell is detachably connected with the grassland coverage measuring equipment; the grassland coverage measuring equipment comprises a processor, a camera, a liquid crystal display screen and a memory; the processor is respectively connected with the camera, the liquid crystal display screen and the memory; the housing of the mower is hollow to form an accommodating cavity; the handheld grassland shelter ecological surveying equipment further comprises a mowing element in the accommodating cavity. It can be seen that, the embodiment of the utility model provides a grassland sample side treatment tool that a class integrates, not only can carry out the operation of coverage measurement including grassland coverage measuring equipment, still can carry out the action of tailorring of ground vegetation including the component of mowing, further acquire sample meadow biomass data through weighing, therefore, can carry out the ecological investigation operation of grassland sample side high-efficiently and manifold, solved and do not have the technical problem of the ecological investigation operation of grassland sample side of a class of better grassland treatment tool that integrates in order to carry out grassland sample side at present.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a handheld grassland-based shelter ecological surveying apparatus according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a grassland coverage measuring apparatus provided in an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a handheld grassland-based shelter ecological surveying apparatus according to another embodiment of the present invention;
fig. 4a is a schematic front view of a meadow coverage measuring device according to a further embodiment of the present invention;
fig. 4b is a schematic side view of a grassland coverage measuring apparatus according to still another embodiment of the present invention;
FIG. 4c is a schematic bottom view of a meadow coverage measuring device according to yet another embodiment of the present invention;
fig. 5 is a schematic view of a display layout of a liquid crystal display according to still another embodiment of the present invention.
Fig. 6 is a schematic view of a display state of a liquid crystal display screen according to yet another embodiment of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | |
207 | |
| 20 | Grassland |
30 | Mowing element |
| 201 | Processor with a memory having a plurality of |
31 | |
| 202 | |
40 | |
| 203 | Liquid |
41 | Grass inlet |
| 204 | |
50 | |
| 205 | |
60 | First weighing |
| 206 | USB interface |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, it should be considered that the combination of the technical solutions does not exist, and is not within the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of a handheld grassland prospectus ecological surveying device provided by an embodiment of the present invention, as shown in fig. 1, the handheld grassland prospectus ecological surveying device includes a grassland biomass measuring device, a grassland coverage measuring device 20;
the lawn biomass measuring device comprises a mower housing 10, a first weighing element 60;
the first weighing element 60 is arranged on the top of the mower housing 10;
the lawn coverage measuring device 20 is detachably connected to the top of the mower housing 10;
the grassland coverage measuring device 20 comprises a processor 201, a camera 202, a liquid crystal display 203 and a memory 204;
the processor 201 is respectively connected with the camera 202, the liquid crystal display 203 and the memory 204;
the inside of the mower shell 10 is hollow to form an accommodating cavity;
the handheld grassland-style ecological surveying apparatus further includes a grass cutting element 30 within the housing chamber.
In this embodiment, a class of meadow processing tool that integrates is provided, not only can carry out the coverage measurement operation including meadow coverage measuring equipment 20, carries out the scientific survey, still can carry out the action of tailorring of ground vegetation including mowing component 30, further acquires appearance meadow biomass data through weighing, can carry out the ecological investigation operation of meadow high-efficiently and the polytropy ground.
Further, the grass coverage measuring device 20 is detachably connected to the mower housing 10, so that the user can detach the grass coverage measuring device 20 to use the grass coverage measuring device 20 independently, i.e., the grass coverage measuring device 20 can be used for measuring the grass coverage at the same time, and the mowing element 30 of the handheld grass-style ecological surveying device is used for vegetation cutting, for example, mowing action.
Further, refer to fig. 2, which is a schematic structural diagram of a grass coverage measuring device 20 according to an embodiment of the present invention.
With regard to the grassland coverage measuring device 20, grassland vegetation pictures can be shot through the camera 202, and grassland coverage can be calculated through the grassland vegetation pictures, so that quick, accurate and efficient measuring behavior for the coverage is realized; at the same time, the value of grass coverage may be displayed on the liquid crystal display 203 and stored in the memory 204.
Furthermore, the first weighing element 60 can be a weight sensor, which can be disposed on the top of the housing of the mower, so that a user can place the grass body to be measured on the top of the mower for weighing, which is more flexible in operation; meanwhile, the grassland biomass data of the sample prescription is obtained by weighing.
The embodiment of the utility model provides a hand-held grassland sample ecological investigation equipment, which comprises a grassland biomass measuring device and a grassland coverage measuring device 20; the lawn biomass measuring device comprises a mower housing 10, a first weighing element 60; the first weighing element 60 is arranged on the top of the mower housing 10; the lawn coverage measuring device 20 is detachably connected to the top of the mower housing 10; the grassland coverage measuring device 20 comprises a processor 201, a camera 202, a liquid crystal display 203 and a memory 204; the processor 201 is respectively connected with the camera 202, the liquid crystal display 203 and the memory 204; the inside of the mower shell 10 is hollow to form an accommodating cavity; the handheld grassland-style ecological surveying apparatus further includes a grass cutting element 30 within the housing chamber. It can be seen that, the embodiment of the utility model provides a grassland sample processing tool that a class integrates, not only can carry out the coverage measurement operation including grassland coverage measuring equipment 20, still can carry out the action of tailorring of ground vegetation including mowing component 30, further acquire sample meadow biomass data through weighing, therefore, can carry out the ecological investigation operation of grassland sample with high efficiency and manifold, solved and do not have the technical problem of a class of better grassland sample processing tool that integrates in order to carry out the ecological investigation operation of grassland sample at present.
Fig. 3 is a schematic structural diagram of a handheld grassland sample ecological survey device according to another embodiment of the present invention, which is based on the embodiment shown in fig. 1.
In the present embodiment, the mowing element 30 includes a motor, a blade;
the motor is connected with the blade.
Specifically, the sender rotates the blade to perform a mowing operation.
On the basis of the above embodiment, preferably, the handheld grassland-style ecological surveying equipment further comprises a grass collecting box 40 in the accommodating cavity;
the grass outlet 31 of the grass cutting element 30 is aligned with the grass inlet 41 of the grass collecting box 40.
Specifically, the grass cutting element 30 may discharge cut grass from the grass outlet 31 after performing a cutting action on the grass entering the inlet.
Wherein the inlet of the grass cutting element 30 can be arranged on the bottom surface of the grass cutting element 30 or on the side surface different from the grass outlet 31.
Wherein, the mower housing 10 can be provided with an opening aligned with the entrance of the mowing element 30 so that the grass body can enter the mowing element 30 for cutting.
Then, the grass outlet 31 of the grass cutting element 30 is aligned with the grass inlet 41 of the grass collecting box 40, and the cut grass can be moved into the grass collecting box 40.
Wherein the grass-collecting box 40 can be taken out from the mower housing 10 for cleaning and dumping the waste grass.
On the basis of the above embodiment, preferably, the bottom surface of the grass-collecting box 40 is provided with a second weighing element 50.
In particular, the second weighing element 50 may be a weight sensor, which measures the weight of the cut grass body, which is obviously weighed immediately after cutting, in order to measure the biomass information.
Yet another embodiment of the present invention can be based on the embodiments shown in fig. 1, fig. 2 and fig. 3.
In this embodiment, the grassland coverage measuring apparatus 20 further comprises a spatial positioning module, and the processor 201 is connected to the spatial positioning module.
Specifically, the spatial location module may record longitude and latitude coordinates of the measurement point, and the longitude and latitude coordinates may be processed by the processor 201 and then transmitted to the memory 204 for storage.
On the basis of the above embodiments, it is preferred that the grass coverage measuring device 20 further comprises a power supply, which is connected to the processor 201.
Of course, the mowing element 30 may correspondingly have its own power source.
On the basis of the above embodiment, preferably, the power source is a rechargeable lithium battery.
On the basis of the above described embodiment, it is preferred that a first side of the grass coverage measuring device 20 is provided with a power switch 205;
the second side of the grass coverage measuring device 20 is provided with a Universal Serial Bus (USB) interface 206.
On the basis of the above-described embodiment, it is preferred that the grass coverage measuring device 20 is provided with a charging interface 207 on its bottom side.
See, among others, the schematic front view of the grass coverage measuring device 20 shown in fig. 4a, the schematic side view of the grass coverage measuring device 20 shown in fig. 4b, and the schematic bottom view of the grass coverage measuring device 20 shown in fig. 4 c.
Specifically, the power switch 205 may be located below the side of the device; the power switch 205 may be connected to a power source to control the power state of the device.
The USB interface 206 may be located under the side of the device, and is used to connect to an external USB disk, and export the measurement data from the memory 204 to the external USB disk.
The charging interface 207 may be located at the bottom of the device and connected to a power source for charging the device.
Further, camera 202 may be located on the front of grass coverage measurement device 20 and liquid crystal display 203 may be located on the back of the device.
On the basis of the above-described embodiment, it is preferable that the signal interface on the mower housing 10 is connected to the signal interface of the grass coverage measuring device 20.
Specifically, in addition to removably attaching the lawn coverage measuring device 20 to the top of the mower housing 10, the two may also be connected for information exchange.
For example, the grass body weight information measured by the second weighing cell 50 or the first weighing cell 60 can also be transmitted to the grass coverage measuring device 20 via a signal interface, and the grass coverage measuring device 20 can not only display the grass body weight information, but also store the grass body weight information in the memory 204.
Of course, other types of information can be transmitted between the two, and the setting can be freely set based on the requirement.
Further, based on the detachable property, the grass coverage measuring device 20 may also be denoted as a handheld grass coverage measuring device 20.
Further, memory 204 may store lawn pictures taken by camera 202, longitude and latitude values and coverage measurements recorded by the spatial location module.
Further, in the case of the grass coverage measurement device 20, a camera 202 may be located above the front of the device for taking a picture of grass vegetation, which is used to calculate grass coverage. Meanwhile, the camera 202 is connected to the processor 201, and can transmit the picture data to the processor 201.
Further, a plant component recognition algorithm based on deep learning may be embedded in the processor 201.
Further, the processor 201 can continuously read the video content shot by the camera 202, and perform real-time video display on the measured grass through the liquid crystal display 203.
Specifically, the processor 201 may process the grassland vegetation image data acquired by the camera 202, identify plant components based on a deep learning algorithm, and calculate the percentage of plant component pixels in the image pixels.
Further, the liquid crystal display 203 may display the grass images captured by the camera 202.
Further, a measurement button may be included on the display interface of the lcd 203, and a command is issued by touching the measurement button, so that the camera 202 can shoot the lawn in the area to be measured, and a high-resolution image of the lawn vegetation can be obtained. Next, the processor 201 may process the lawn vegetation image data acquired by the camera 202, identify plant components based on a deep learning algorithm, and calculate the percentage of plant component pixels in the image pixels.
Further, a liquid crystal display 203 is located on the back of the device and can be used to display various virtual control buttons, longitude and latitude measurements, and coverage measurements.
See fig. 5 for a display layout of the lcd 203.
There are 6 display areas in the display layout, 2 display areas above and 4 display areas below.
First, the display area on the upper left side can be a longitude and latitude display area used for displaying longitude and latitude coordinates measured by the space positioning module.
And secondly, the display area on the right side of the upper part can be a coverage measurement value display area for displaying the measured vegetation coverage.
Thirdly, the first display area from left to right below can be a virtual button, specifically a save button; clicking on this button can save the vegetation picture and coverage measurements.
Fourthly, a second display area from left to right below can be a virtual button, in particular a cancel button; and clicking the button, so that the coverage value, longitude and latitude and picture of the measurement cannot be stored.
Fifthly, a third display area from left to right below can be a virtual button, in particular a measurement button; clicking on this button, the device performs image acquisition and coverage measurement.
Sixthly, a fourth display area from left to right below can be a virtual button, specifically a data transmission button; by clicking the button, the coverage measurement value, the shot image and the longitude and latitude of the measurement point can be automatically transmitted to the USB flash disk connected with the equipment.
It can be seen that the embodiment of the utility model provides a can carry out quick, accurate and contactless measurement to meadow coverage, simultaneously, can also take notes and store data such as longitude and latitude, vegetation picture of measuring point, effectively promoted the measurement of meadow vegetation coverage efficiency.
Here, a more specific implementation may be given.
For example, the power switch 205 may be turned on to provide power to the device. After the device is successfully powered on, the camera 202 can continuously read the grass video and display it on the lcd 203.
If dismantle grassland coverage measuring equipment 20 down, can aim at the grassland that awaits measuring perpendicularly downwards with grassland coverage measuring equipment 20, click the measurement button, the grassland picture is gathered to camera 202, and the grassland picture is transmitted to treater 201. And the space positioning module records the longitude and latitude information of the measuring place. The vegetation identification algorithm based on deep learning is embedded in the processor 201, the grassland image acquired by the camera 202 is processed, the plant components are identified, the pixel number information occupied by the plant components is acquired, the percentage of the plant pixel number in the image pixel number is calculated, the coverage measurement value is obtained, and the measurement value is displayed on the liquid crystal display screen 203. After the measurement is completed, the save button is clicked and both the picture and the coverage measurement will be saved in memory 204. If the measured value has obvious error, the cancel button is clicked, and the measured data is not stored. If the measurement data and the picture are to be exported, the USB flash disk is required to be connected with the equipment through the USB interface 206, and the data transmission button is clicked, so that the data are automatically transmitted to the external USB flash disk. After all the measurement work is completed, the power switch 205 is clicked, and the device is safely shut down.
Here, a more specific implementation may be given.
In which, see the schematic diagram of the display state of the liquid crystal display 203 shown in fig. 6 at a certain moment.
For example, in field measurements, the power switch 205 is turned on, both hands hold the grass coverage measuring device 20 and remain horizontal, and the camera 202 is aimed vertically downward at the grass, at which time the latitude and longitude of the measurement point will appear in the upper left corner of the liquid crystal display 203, such as "116 ° 23 '17" E, 39 ° 54' 27 "N" in the upper left corner of fig. 6.
Clicking on the "measure" button causes a coverage measurement to appear in the upper right hand corner of the lcd 203, as shown in figure 6 as "32%". Clicking the "save" button, the data is saved to memory 204. If the data is to be exported, the USB flash disk is connected with the equipment through the USB interface 206, and the data is automatically transmitted to the external USB flash disk by clicking the data transmission button.
In addition, the device automatically creates two folders in the external USB flash disk, one is used for storing images in a JPG format, and the other is used for storing coverage measurement values and measuring point longitude and latitude values in a text format. Where both the image and text files are named by time, such as 2020-03-01-09-27-40.jpg and 2020-03-01-09-27-40.txt, where 2020 is year, 03 is month, 01 is day, 09 is hour, 27 is minute, and 40 is second.
It can be seen that hand-held type meadow coverage measuring equipment 20 based on digital imaging and image analysis technology research and development can realize quick, accurate measurement and the storage to the meadow coverage, has promoted the efficiency of obtaining meadow coverage monitoring data, promotes ecosystem monitoring capability.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. A handheld grassland shelter ecological survey device is characterized by comprising a grassland biomass measuring device and a grassland coverage measuring device;
the lawn biomass measuring device comprises a mower housing and a first weighing element;
the first weighing element is arranged at the top of the mower shell;
the top of the mower shell is detachably connected with the grassland coverage measuring equipment;
the grassland coverage measuring equipment comprises a processor, a camera, a liquid crystal display screen and a memory;
the processor is respectively connected with the camera, the liquid crystal display screen and the memory;
the housing of the mower is hollow to form an accommodating cavity;
the handheld grassland shelter ecological surveying equipment further comprises a mowing element in the accommodating cavity.
2. The handheld lawn-style ecological surveying device of claim 1, wherein the mowing element comprises an engine, a blade;
the motor is connected with the blade.
3. The handheld grassland shelter ecological survey device of claim 1, further comprising a grass collecting box inside the housing chamber;
the grass outlet of the grass cutting element is aligned with the grass inlet of the grass collecting box.
4. A hand-held grassland shelter ecological survey apparatus as claimed in claim 3, wherein the bottom surface of the grass-collecting box is provided with a second weighing element.
5. The handheld grassland dais ecological survey apparatus of any one of claims 1 to 4, wherein the grassland coverage measuring apparatus further comprises a spatial location module, the processor being connected with the spatial location module.
6. The handheld grassland dais ecological survey apparatus of any one of claims 1 to 4, wherein the grassland coverage measurement apparatus further comprises a power source connected to the processor.
7. The handheld grassland shelter ecological survey apparatus of claim 6, wherein the power source is a rechargeable lithium battery.
8. A hand-held grassland shelter ecological survey apparatus as claimed in any of claims 1 to 4, wherein the first side of the grassland coverage measuring apparatus is provided with a power switch;
and a Universal Serial Bus (USB) interface is arranged on the second side surface of the grassland coverage measuring equipment.
9. The handheld grassy-square ecological survey device of any one of claims 1 to 4, wherein the grassy coverage measuring device is provided with a charging interface at a bottom surface thereof.
10. A hand-held lawnmower-like ecological surveying device according to any of claims 1 to 4, wherein the signal interface on the mower housing is connected to the signal interface of the lawnmower coverage measuring device.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113933301A (en) * | 2021-10-14 | 2022-01-14 | 青海省草原改良试验站 | Infrared laser intelligent sample investigation device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113933301A (en) * | 2021-10-14 | 2022-01-14 | 青海省草原改良试验站 | Infrared laser intelligent sample investigation device and method |
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Granted publication date: 20201225 |