A grassland resource sample plot grass population height monitoring device

Abstract

The utility model discloses a prairie resource sample plot grass height monitoring devices, including base, fixed foot, electric telescopic link, mounting disc, movable plate, pressure sensor, controller. The utility model discloses utilize movable plate horizontal development, form the main body structure of monitoring grass height, in the detection process, through electric telescopic link drive movable plate to rise, cooperate pressure sensor and judge, the stroke distance of electric telescopic link extension is the plant growth height, and the efficient realization prairie resource sample plot grass height monitoring, the utility model discloses movable plate adopts the structure of turning over, and the whole structure is simple, and the carrying, transportation are convenient, can also adopt detachable structure, help to reduce the overall length of device, and the carrying, transportation limit is small. Movable plate can also be set to multiple, and multiple movable plates are along the circumferential distribution of mounting disc, that is, extend horizontally to different directions, increase the detection range, and it is favorable to improve the grass height detection precision of this place.

Description

Technical Field

[0001] This utility model belongs to the field of grassland resource survey technology, specifically relating to a grassland resource sample plot grass height monitoring device. Background Technology

[0002] Grassland ecosystems are vital natural resources and ecological barriers, playing an irreplaceable role in maintaining biodiversity, soil and water conservation, and livestock development. To scientifically manage grassland resources, long-term and regular monitoring of grassland growth is necessary. Grassland resource plots are the basic unit of grassland monitoring, referring to specific representative areas selected from a vast grassland according to statistical principles. By monitoring vegetation indicators (such as grass height and cover) within these plots, the overall health and productivity of the grassland in the region can be effectively assessed. Grass height is a key parameter reflecting vegetation growth and estimating biomass.

[0003] Currently, traditional methods for manually measuring grassland height in sample plots typically involve using a measuring rod. Surveyors go deep into each sampling point, place the measuring tool vertically in the grass, and visually read the natural height of the grass. This method is not only labor-intensive and time-consuming, but also prone to significant errors in visual readings. Especially for sample plots requiring long-term monitoring, the workload is too heavy to meet the demands of modern, precise monitoring. Furthermore, frequent personnel entry into the sample plots during manual measurements inevitably tramples and disturbs the vegetation, affecting the accuracy of the monitoring data. Therefore, developing a grassland height monitoring device that can solve these problems is essential. Utility Model Content

[0004] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a grassland resource plot grass height monitoring device.

[0005] The purpose of this utility model is achieved as follows: it includes a base, a fixed foot, an electric telescopic rod, a mounting plate, a movable plate, a pressure sensor, and a controller. The fixed foot is located at the bottom of the base, the electric telescopic rod is vertically mounted on the base, the bottom center of the mounting plate is connected to the upper end of the electric telescopic rod, one end of the movable plate is rotatably connected to the edge of the mounting plate via a hinge, the movable plate is horizontal with the mounting plate, and the movable plate can rotate upwards. A pressure sensor is provided on the bottom surface of the movable plate, and the controller is electrically connected to the electric telescopic rod and the pressure sensor respectively.

[0006] Preferably, the electric telescopic rod 3 integrates an encoder, which can accurately detect the position and convert it into an electrical signal to detect the travel length of the telescopic rod. The electric telescopic rod, also known as an electric push rod, has a built-in encoder for detecting the travel length of the telescopic rod, which is a well-known technology in the field.

[0007] The controller can be a well-known control component in the art, such as a PLC controller or development board. The pressure sensor can be a thin-film pressure sensor, which can be laid along the length of the movable plate, or it can be other pressure sensors commonly used in the art, which can be spaced apart along the length of the movable plate. When there are multiple pressure sensors on a movable plate, the electric telescopic rod is set to stop extending when all pressure sensors do not detect pressure. The signal detected by the pressure sensor is transmitted to the controller, and the controller controls the start and stop of the electric telescopic rod according to the signal. The connection relationship between the controller, the electric telescopic rod, and the pressure sensor, as well as the control process, are common knowledge in the art. If a PLC controller, such as a Siemens PLC controller, is used, its programming method to achieve the specific control process is also common knowledge in the art.

[0008] The monitoring frequency of grass height in grassland resource plots can be flexibly determined according to the growth rate of plants in the plots, such as once every 5 to 15 days.

[0009] This device can also be equipped with a rechargeable battery pack to power the electric telescopic pole, pressure sensor, and controller; staff only need to periodically replace the depleted battery to achieve long-term monitoring.

[0010] It should be noted that: this device is deployed at the sampling point, and its monitoring result is the plant height near the sampling point, which is taken as the grass height near the sampling point; in actual use, the sampling plot usually has multiple sampling points, such as the five-point method for square sampling plots, that is, sampling points are set at the four corners and the center of the sampling plot; for larger sampling plots, the grid method can be used; this device can be set at each sampling point, and the average grass height of all sampling points is taken as the grass height of the sampling plot.

[0011] The controller of this device is usually equipped with a memory to store monitoring data.

[0012] For sample plots with communication network coverage, the device can also be equipped with a communication module for wireless data transmission, such as a 2G, 3G, 4G, or 5G communication module, to achieve remote monitoring. The connection relationship between the communication module and the controller, as well as the data transmission process, are common knowledge in the field.

[0013] Preferably, the mounting plate is a circular plate, and there are multiple movable plates, which are evenly distributed along the circumference of the mounting plate. Each movable plate is equipped with a pressure sensor. When there are multiple movable plates, when the electric telescopic rod extends, whenever the pressure sensor of one of the movable plates fails to detect pressure, the travel distance of the telescopic rod at this time is recorded. This travel distance is used as the plant height increment data corresponding to that movable plate. The electric telescopic rod stops extending when the pressure sensors of all movable plates fail to detect pressure. The average value of the plant height increment data corresponding to multiple movable plates can be taken as the grass height increment of the sample location.

[0014] Preferably, the mounting plate has a boss at the bottom center, and the boss is detachably connected to the top groove at the upper end of the electric telescopic rod. The groove at the upper end of the electric telescopic rod is a connector structure with its own connector. The fixed foot is detachably connected to the base, specifically by adopting an internal and external thread structure for detachable connection. Multiple fixed feet can be provided to enhance the stability of the device.

[0015] Preferably, the length of the movable plate is 5cm to 20cm.

[0016] Preferably, the number of movable plates is 3 to 4.

[0017] Preferably, the device also includes a solar power generation device and a battery unit. The battery unit is electrically connected to the electric telescopic pole, pressure sensor, controller, and solar power generation device. The electrical connection between the solar power generation device and the battery unit is existing technology in the field and uses conventional solar power generation equipment. The battery unit serves as the power source for the electric telescopic pole, pressure sensor, and controller. The battery unit does not refer solely to a battery, but includes not only a battery but also other components necessary for power use that are well known to those skilled in the art, such as step-up / step-down modules and power management modules, to ensure that the operating conditions of different electrical equipment are met. These are all well-known technologies in the field and will not be described in detail here.

[0018] The beneficial effects of this utility model are: 1. This utility model utilizes a movable plate that unfolds horizontally to form the main structure for monitoring grass height. During the detection process, the movable plate is raised by an electric telescopic rod, and the pressure sensor makes a judgment. The travel distance of the electric telescopic rod is the plant growth height, which efficiently realizes the monitoring of grass height in grassland resource plots. 2. The movable plate of this utility model adopts an upward flip-up structure, which is simple in overall structure and easy to carry and transport. It can also adopt a detachable structure, which helps to reduce the overall length of the device and has fewer restrictions on carrying and transporting. 3. Multiple movable plates can be set up, and multiple movable plates are arranged around the circumference of the mounting plate, that is, they extend horizontally in different directions, increasing the detection range and improving the detection accuracy of grass height in that area. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure in its usability state after the movable panel is rotated upwards and folded up. Figure 3 This is a schematic diagram of the structure in use after the mounting plate and the electric telescopic rod are separated and the base is separated from the fixed feet; In the diagram: 1-base, 2-fixed foot, 3-electric telescopic rod, 4-mounting plate, 5-movable plate, 6-pressure sensor, 7-solar power generation device. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings, but this description is not intended to limit the present invention in any way. Any modifications or substitutions made based on the teachings of the present invention shall fall within the protection scope of the present invention.

[0021] Example 1 As attached Figures 1-2 As shown, the grassland resource plot grass height monitoring device in this embodiment includes a base 1, fixed feet 2, an electric telescopic rod 3, a mounting plate 4, movable plates 5, pressure sensors 6, and a controller. The fixed feet 2 are located at the bottom of the base 1. The electric telescopic rod 3 integrates an encoder and is vertically mounted on the base 1. The bottom center of the mounting plate 4 is connected to the upper end of the electric telescopic rod 3. One end of the movable plate 5 is rotatably connected to the edge of the mounting plate 4 via a hinge. The movable plate 5 is horizontal with the mounting plate 4 and can rotate upwards. The bottom surface of the movable plate 5 is equipped with a pressure sensor 6. The controller is electrically connected to the electric telescopic rod 3 and the pressure sensor 6. The mounting plate 4 is a circular plate. There are four movable plates 5, which are evenly distributed along the circumference of the mounting plate 4. The length of each movable plate 5 is 20cm, and each movable plate 5 is equipped with a pressure sensor 6.

[0022] Example 2 As attached Figure 3 As shown, the grassland resource plot grass height monitoring device in this embodiment is based on embodiment 1. The mounting plate 4 has a boss at the bottom center, and the boss is detachably connected to the top groove of the upper end of the electric telescopic rod 3. The fixing foot 2 is detachably connected to the base 1. Before use, the mounting plate 4 and the upper end of the electric telescopic rod 3 are installed together, and the fixing foot 2 is installed together with the base 1. When it is necessary to disassemble this device, the components are disassembled.

[0023] Example 3 The grassland resource plot grass height monitoring device in this embodiment is based on embodiment 2, and further includes a solar power generation device 7 and a battery unit. The battery unit is electrically connected to the electric telescopic rod 3, the pressure sensor 6, the controller, and the solar power generation device 7. The solar power generation device converts solar energy into electrical energy and stores it in the battery unit, which provides power to the electric telescopic rod 3, the pressure sensor 6, and the controller.

[0024] The working principle and process of this utility model are as follows: Select a grassland resource sample plot to be monitored, insert the fixing feet into the soil layer to fix the device, and ensure that the electric telescopic rod 3 is vertical; pull the movable plate 5, which is in the retracted state, downwards, so that the movable plate 5 is horizontal and the pressure sensor 6 on the bottom surface of the movable plate 5 contacts and presses down on the plant leaves; then perform the initialization operation, specifically, start the electric telescopic rod 3, which drives the movable plate 5 to rise until the pressure sensor 6 no longer detects a pressure signal and stops rising. At this time, measure and record the height of the plants below the movable plate 5; when it is necessary to detect the grass height, start the electric telescopic rod 3, and the movable plate 5 rises until the pressure sensor 6 no longer detects a pressure signal and stops rising. Record the travel distance of the electric telescopic rod 3. Add this distance to the previously recorded plant height to get the current plant height; thereafter, each time monitoring is performed, add the travel distance of the electric telescopic rod 3 to the accumulated plant height to get the current plant height. This height can represent the grass height of the sample plot, or the device can be installed at different points in the sample plot, and the average of the multiple measured current plant heights can be taken as the grass height of the sample plot.

Claims

1. A grassland resource plot grass height monitoring device, comprising a base (1), fixed feet (2), an electric telescopic rod (3), a mounting plate (4), a movable plate (5), a pressure sensor (6), and a controller, characterized in that... The fixed foot (2) is located at the bottom of the base (1), the electric telescopic rod (3) is vertically mounted on the base (1), the bottom center of the mounting plate (4) is connected to the upper end of the electric telescopic rod (3), one end of the movable plate (5) is rotatably connected to the edge of the mounting plate (4) by a hinge, the movable plate (5) is horizontal with the mounting plate (4), and the movable plate (5) can rotate upward. The bottom surface of the movable plate (5) is provided with a pressure sensor (6), and the controller is electrically connected to the electric telescopic rod (3) and the pressure sensor (6) respectively.

2. The grassland resource plot grass height monitoring device according to claim 1, characterized in that... The electric telescopic pole (3) is equipped with an encoder.

3. The grassland resource plot grass height monitoring device according to claim 1, characterized in that... The mounting plate (4) is a circular plate, and there are multiple movable plates (5) that are evenly distributed along the circumference of the mounting plate (4). Each movable plate (5) is equipped with a pressure sensor (6).

4. The grassland resource plot grass height monitoring device according to claim 1, characterized in that... The mounting plate (4) has a boss at the bottom center, and the boss is detachably connected to the top groove at the upper end of the electric telescopic rod (3). The fixed foot (2) is detachably connected to the base (1).

5. The grassland resource plot grass height monitoring device according to claim 1 or 3, characterized in that... The length of the movable board (5) is 5cm to 20cm.

6. The grassland resource plot grass height monitoring device according to claim 3, characterized in that... The number of the movable plates (5) is 3 to 4.

7. The grassland resource plot grass height monitoring device according to claim 1, characterized in that... It also includes a solar power generation device (7) and a battery unit, which are electrically connected to the electric telescopic rod (3), pressure sensor (6), controller and solar power generation device (7), respectively.

Images