Landfill settlement measuring equipment and measuring method

Abstract

The invention discloses landfill settlement measurement equipment and a measurement method, relates to the technical field of measurement and testing, and is simple to operate, high in randomness and accurate and wide in measurement result. Comprising a movable monitoring point arranged in a landfill and a plurality of measuring points randomly arranged in the landfill, the monitoring point comprises a base, and a fixed first laser range finder and a rotatable second laser range finder are arranged on the base; a first signal receiver used for receiving signals of the first laser range finders is fixedly arranged on one side of the landfill, the base can move front and back relative to the signal receiver in the landfill, the measuring points are a plurality of measuring rods arranged in the landfill, and second signal receivers used for receiving signals of the second laser range finders are arranged on the measuring rods. A signal receiving plate is arranged on the base and located below the first laser range finder and the second laser range finder, and an infrared sensor facing the signal receiving plate is fixedly arranged on the second laser range finder.

Description

Technical Field

[0001] This invention relates to the field of measurement and testing technology, specifically to a landfill waste settling measurement device and method. Background Technology

[0002] Landfilling is the most basic method of urban waste disposal. Although urban waste can be treated through incineration, composting, or sorting and recycling, the remaining waste that is difficult to process still requires final landfill treatment. Utilizing depressions in urban areas for landfilling can both dispose of waste and create new land, protecting the environment. Over time, the waste in existing landfills will settle, leading to foundation instability and affecting the continued use of the entire landfill. Therefore, settlement monitoring of landfills is necessary.

[0003] For example, Chinese patent CN221826144U discloses a landfill settlement detection device, including a landfill area. A first base layer of horizontal height is provided at the bottom of the inner cavity of the landfill area. Limiting blocks are fixedly installed from top to bottom on the right inner wall of the inner cavity of the landfill area. A first leveling rod is inserted between the two limiting blocks. By setting a second leveling rod, and by setting the upper surfaces of the first and second base layers to be at the same height, and by ensuring that the upper surfaces of the first and second leveling rods are at the same height, when the first base layer descends, the first leveling rod follows the first base layer down. At this time, the landfill settlement value can be obtained based on the height difference between the first and second leveling rods. After the leveling instrument is started by a motor, the motor drives the rotating shaft to rotate, and the rotating shaft drives the leveling instrument to rotate, thereby detecting the height of the first and second leveling rods. This achieves real-time data detection of landfill settlement, realizing the detection of landfills, and is highly practical.

[0004] The landfill settlement detection device provided by this patent can only measure settlement information within the range of the first leveling rod. The detection range is narrow, lacks randomness, and the measurement results are not accurate enough. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the defects of the existing technology and provide a landfill waste settling measurement device and method that is simple to operate, highly random, and provides accurate and wide-ranging measurement results.

[0006] To solve the above-mentioned technical problems, the technical solution of the present invention is: a landfill waste settling measurement device, comprising a movable monitoring point set in a landfill and multiple measurement points randomly set in the landfill. The monitoring point includes a base, on which a fixed first laser rangefinder and a rotatable second laser rangefinder are mounted. A first signal receiver for receiving signals from the first laser rangefinder is fixedly mounted on one side of the landfill. The base can move back and forth relative to the signal receiver within the landfill. The measurement points are a plurality of measuring rods set in the landfill. A second signal receiver for receiving signals from the second laser rangefinder is mounted on each measuring rod. A signal receiving plate is mounted on the base below the first laser rangefinder and the second laser rangefinder. An infrared sensor facing the signal receiving plate is fixedly mounted on the second laser rangefinder.

[0007] Furthermore, a connecting pipe is fixedly provided on the base, the first laser rangefinder is fixedly mounted on the connecting pipe, and the first laser rangefinder is set perpendicular to the first signal receiver. A rotating seat is rotatably mounted on the top of the connecting pipe, and the second laser rangefinder is fixedly mounted on the rotating seat.

[0008] Furthermore, a rotating shaft is provided inside the connecting pipe, the rotating shaft is fixedly connected to the rotating seat, and a drive motor is fixedly provided on the base, the output end of the drive motor is fixedly connected to the rotating shaft.

[0009] Furthermore, mounting platforms are fixedly provided on two opposite sides of the landfill, and a guide rail is fixedly provided between the two mounting platforms. The guide rail is set perpendicular to the first signal receiver, and a groove corresponding to the guide rail is opened on the bottom of the base.

[0010] Furthermore, a lead screw is rotatably provided on one side of the guide rail, the lead screw is threadedly connected to the base, and a transmission motor for driving the lead screw to rotate is fixed on the mounting platform.

[0011] Furthermore, the first signal receiver is fixedly mounted on the mounting platform.

[0012] A method for measuring landfill waste settlement is also provided. This method is applicable to the aforementioned landfill waste settlement measurement equipment and includes the following steps:

[0013] S1: Establish a first planar coordinate system based on the landfill, and establish a second planar coordinate system based on the signal receiving board;

[0014] S2: Determine the position of each measuring rod within the landfill. m (X) m Y mThe positional distribution of each measuring rod within the landfill is obtained.

[0015] S3: Measure the settlement value r at each measuring rod.

[0016] Furthermore, taking the point projected by the first laser rangefinder onto the first signal receiver as the origin O of the first planar coordinate system, the straight line where the first laser rangefinder is located as the X-axis, the direction towards the first laser rangefinder as the positive X-axis, the straight line where the lower edge of the first signal receiver is located as the Y-axis, and the direction to the right as the positive Y-axis, a first planar coordinate system can be established based on the landfill. Taking the intersection of the axis of the connecting pipe and the signal receiving plate as the origin o, the straight line parallel to the X-axis as the x-axis, the direction of the positive X-axis as the positive x-axis, the straight line parallel to the Y-axis as the y-axis, and the direction of the positive Y-axis as the positive y-axis, a second planar coordinate system can be established based on the signal receiving plate.

[0017] Further, let P be the point where the infrared sensor is located, l1 be the distance measured by the first laser rangefinder, l2 be the distance measured by the second laser rangefinder, a be a be constant from the end of the first laser rangefinder to the origin o of the second plane coordinate system, b1 be a be constant from the infrared sensor to the origin o of the second plane coordinate system, b2 be a be constant from the infrared sensor to the end of the second laser rangefinder, and the coordinates of the point on the signal receiving board projected by the infrared sensor are the coordinates P(x, y) of the infrared sensor in the second plane coordinate system. Combining the above data, the coordinates G of each measuring rod in the first plane coordinate system can be obtained. m (x*(b2+l2) / b1+a+l1, y*(b2+l2) / b1).

[0018] Furthermore, the initial height of the point on the second signal receiver on each measuring rod projected by the second laser rangefinder is h0. During the measurement process, the height of the point on the second signal receiver on each measuring rod projected by the second laser rangefinder is h, and the settlement value r = h - h0.

[0019] By adopting the above technical solution, the present invention has the following beneficial effects: After the garbage is placed in the landfill, the position coordinates of each measuring rod are obtained first, and then the position distribution of each measuring rod in the landfill is obtained. Subsequently, the second laser rangefinder is continuously tested, and the settlement value at a certain point in the landfill can be accurately obtained. Since the distribution of the measuring rods is random, the measurement results are more accurate and extensive. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the landfill waste settling measurement device of the present invention;

[0021] Figure 2This is a schematic diagram of the monitoring point structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the laser rangefinder, infrared sensor, and measurement point in the coordinate system in this invention.

[0023] Attached reference numerals: 1. Landfill; 2. Monitoring point; 3. Measurement point;

[0024] 11. Mounting platform; 12. Guide rail; 13. Lead screw; 14. Drive motor; 15. First signal receiver;

[0025] 21. Base; 22. First laser rangefinder; 23. Second laser rangefinder; 24. Signal receiving board;

[0026] 25. Infrared sensor; 26. Connecting pipe; 27. Rotating seat; 28. Rotating shaft; 29. ​​Drive motor;

[0027] 31. Measuring rod; 32. Second signal receiver. Detailed Implementation

[0028] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0029] like Figure 1-2 As shown, in this embodiment, a landfill waste settling measurement device is provided, including a movable monitoring point 2 set in a landfill 1 and multiple measuring points 3 randomly set in the landfill 1. The monitoring point 2 includes a base 21, on which a fixed first laser rangefinder 22 and a rotatable second laser rangefinder 23 are provided. A first signal receiver 15 for receiving signals from the first laser rangefinder 22 is fixed on one side of the landfill 1. The base 21 can move back and forth relative to the signal receiver in the landfill 1. The measuring points 3 are a plurality of measuring rods 31 set in the landfill 1, on which a second signal receiver 32 for receiving signals from the second laser rangefinder 23 is provided.

[0030] In this embodiment, a signal receiving board 24 is provided on the base 21 below the first laser rangefinder 22 and the second laser rangefinder 23, and an infrared sensor 25 facing the signal receiving board 24 is fixed on the second laser rangefinder 23.

[0031] In this embodiment, a connecting pipe 26 is fixedly provided on the base 21, a first laser rangefinder 22 is fixedly provided on the connecting pipe 26, and the first laser rangefinder 22 is set perpendicular to the first signal receiver 15. A rotating seat 27 is rotatably installed on the top of the connecting pipe 26, and a second laser rangefinder 23 is fixedly provided on the rotating seat 27. A rotating shaft 28 is provided inside the connecting pipe 26, and the rotating shaft 28 is fixedly connected to the rotating seat 27, so that the rotating shaft 28 can drive the rotating seat 27 to rotate, and at the same time drive the second laser rangefinder 23 to rotate.

[0032] In this embodiment, a drive motor 29 is fixedly mounted on the base 21, and the output end of the drive motor 29 is fixedly connected to the rotating shaft 28.

[0033] In this embodiment, mounting platforms 11 are fixedly provided on two opposite sides of the landfill 1, and guide rails 12 are fixedly provided between the two mounting platforms 11. The guide rails 12 are set perpendicular to the first signal receiver 15. The bottom of the base 21 is provided with a sliding groove corresponding to the guide rails 12. A lead screw 13 is rotatably provided on one side of the guide rails 12. The lead screw 13 is threadedly connected to the base 21. A transmission motor 14 for driving the lead screw 13 to rotate is fixedly provided on the mounting platform 11. In this embodiment, in order to ensure the stability of the base 21 when sliding, two guide rails 12 are provided, and the lead screw 13 is located between the two guide rails 12.

[0034] In this embodiment, the first signal receiver 15 is fixedly mounted on the mounting platform 11.

[0035] In this embodiment, the mounting platform 11 is also equipped with a controller and a processor. The first laser rangefinder 22, the second laser rangefinder 23, the first signal receiver 15, the second signal receiver 32, the infrared sensor 25, and the signal receiving board 24 are all electrically connected to the controller and the processor.

[0036] The working principle of this invention is as follows: When the base 21 moves back and forth on the landfill 1, it drives the first laser rangefinder 22 and the second laser rangefinder 23 to move back and forth. At the same time, the second laser rangefinder 23 rotates. During the rotation of the second laser rangefinder 23, the second signal receiver 32 on the measuring rod 31 receives the signal of the second laser rangefinder 23. When the second signal receiver 32 receives the signal of the second laser rangefinder 23, it determines the position of the second laser rangefinder 23 relative to the first laser rangefinder 22 by using the signal projected on the signal receiving plate 24 by the infrared sensor 25. At the same time, the first signal receiver 15 receives the signal of the first laser rangefinder 22, thereby determining the position of the measuring rod 31. Subsequently, as the base 21 continues to move back and forth on the landfill 1, the difference between the signal received by the second signal receiver 32 on the measuring rod 31 from the second laser rangefinder 23 and the initial signal value is the settlement value at that location.

[0037] In this embodiment, a method for measuring landfill waste settlement is also provided. This method is applicable to the aforementioned landfill waste settlement measurement equipment and includes the following steps:

[0038] S1: Establish a first planar coordinate system based on landfill 1, and establish a second planar coordinate system based on signal receiving board 24;

[0039] Specifically, the point projected by the first laser rangefinder 22 onto the first signal receiver 15 is taken as the origin O of the first planar coordinate system. The straight line where the first laser rangefinder 22 is located is taken as the X-axis, and the direction towards the first laser rangefinder 22 is taken as the positive direction of the X-axis. The straight line where the lower edge of the first signal receiver 15 is located is taken as the Y-axis, and the direction to the right is taken as the positive direction of the Y-axis. Thus, the first planar coordinate system can be established based on the landfill 1. Based on the signal receiving plate 24, the intersection of the axis of the connecting pipe 26 and the signal receiving plate 24 is taken as the origin O. The straight line parallel to the X-axis is taken as the x-axis, and the direction in the positive direction of the X-axis is taken as the positive direction of the x-axis. The straight line parallel to the Y-axis is taken as the y-axis, and the direction in the positive direction of the Y-axis is taken as the positive direction of the y-axis. Thus, the second planar coordinate system can be established based on the signal receiving plate 24.

[0040] S2: Determine the position of each measuring rod 31 within landfill 1. m X m Y m The positional distribution of each measuring rod 31 within the landfill 1 is obtained;

[0041] Let point A be the location of the first laser rangefinder 22, point B be the location of the second laser rangefinder 23, point P be the location of the infrared sensor 25, and point G be the location of each measuring rod 31. m The distance measured by the first laser rangefinder 22 is l1, and the distance measured by the second laser rangefinder 23 is l2. The distance from the end of the first laser rangefinder 22 to the origin o of the second plane coordinate system is a constant value a. The distance from the infrared sensor 25 to the origin o of the second plane coordinate system is a constant value b1, and the distance from the infrared sensor 25 to the end of the second laser rangefinder 23 is a constant value b2. The coordinates of the point projected by the infrared sensor 25 onto the signal receiving board 24 are the coordinates P(x, y) of the infrared sensor 25 in the second plane coordinate system. Combining the values ​​measured by the second laser rangefinder 23, the processor can calculate the coordinates G of each measuring rod 31 in the second plane coordinate system. m ’ (x) m y m Combining the values ​​measured by the first laser rangefinder 22, the processor can calculate the coordinates G of each measuring rod 31 in the first plane coordinate system. m (X) m Y m ), specifically:

[0042] like Figure 3 We can obtain x / x m =y / y m =b1 / (b2+ l2)

[0043] We can get x / x m =y / y m =b1 / (b2+ l2)

[0044] x / x m =y / y m =b1 / (b2+ l2)

[0045] The coordinates of each measuring rod 31 in the second plane coordinate system are:

[0046] G m ’ (x*(b2+ l2) / b1, y*(b2+ l2) / b1),

[0047] At the same time, combining the values ​​measured by the first laser rangefinder 22, X can be obtained. m = x m +a+l1,Y m = y m ,

[0048] Based on the above, we can obtain X. m = x*(b2+ l2) / b1+a+l1,Y m = y*(b2+ l2) / b1,

[0049] That is, the coordinates of each measuring rod 31 in the first plane coordinate system are:

[0050] G m (x*(b2+l2) / b1+a+l1, y*(b2+l2) / b1), the processor records the coordinates of each measuring rod 31 in the first plane coordinate system, and obtains the position distribution of each measuring rod 31 in the landfill 1;

[0051] S3: Measure the settlement value r at each measuring rod 31;

[0052] Specifically, the initial height of the point projected by the second laser rangefinder 23 onto the second signal receiver 32 on each measuring rod 31 is h0. When the height h of the point projected by the second laser rangefinder 23 onto the second signal receiver 32 on each measuring rod 31 is greater than h0 during the measurement process, it indicates that settlement has occurred at the measuring rod 31, and the settlement value r = h - h0.

[0053] In summary, after placing the waste in landfill 1, the position coordinates of each measuring rod 31 are obtained first, and then the position distribution of each measuring rod 31 in landfill 1 is obtained. Subsequently, the second laser rangefinder 23 continuously tests, and the settlement value at a certain point in landfill 1 can be accurately obtained. Since the measuring rods 31 are randomly distributed, the measurement results are more accurate and extensive.

[0054] The specific embodiments described above further illustrate the technical problems, technical solutions, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A landfill waste settling measurement device, characterized in that: The system includes a movable monitoring point (2) located within the landfill (1) and multiple measurement points (3) randomly located within the landfill (1). The monitoring point (2) includes a base (21) on which a fixed first laser rangefinder (22) and a rotatable second laser rangefinder (23) are mounted. A first signal receiver (15) for receiving signals from the first laser rangefinder (22) is fixedly mounted on one side of the landfill (1). The base (21) can be positioned relative to the signal receiver (23) within the landfill (1). The receiver moves back and forth. The measurement point (3) consists of several measuring rods (31) set in the landfill (1). The measuring rods (31) are equipped with a second signal receiver (32) for receiving the signal of the second laser rangefinder (23). The base (21) is equipped with a signal receiving plate (24) located below the first laser rangefinder (22) and the second laser rangefinder (23). The second laser rangefinder (23) is fixed with an infrared sensor (25) facing the signal receiving plate (24).

2. The landfill waste settling measurement device according to claim 1, characterized in that: A connecting pipe (26) is fixedly provided on the base (21). The first laser rangefinder (22) is fixedly provided on the connecting pipe (26) and is perpendicular to the first signal receiver (15). A rotating seat (27) is rotatably installed on the top of the connecting pipe (26). The second laser rangefinder (23) is fixedly provided on the rotating seat (27).

3. The landfill waste settling measurement device according to claim 2, characterized in that: The connecting pipe (26) is provided with a rotating shaft (28), which is fixedly connected to the rotating seat (27). The base (21) is fixedly provided with a drive motor (29), and the output end of the drive motor (29) is fixedly connected to the rotating shaft (28).

4. The landfill waste settling measurement device according to claim 1, characterized in that: Mounting platforms (11) are fixedly provided on two opposite sides of the landfill (1), and a guide rail (12) is fixedly provided between the two mounting platforms (11). The guide rail (12) is set perpendicular to the first signal receiver (15), and a groove corresponding to the guide rail (12) is opened at the bottom of the base (21).

5. The landfill waste settling measurement device according to claim 4, characterized in that: A lead screw (13) is rotatably provided on one side of the guide rail (12). The lead screw (13) is threadedly connected to the base (21). A transmission motor (14) for driving the lead screw (13) to rotate is fixed on the mounting platform (11).

6. The landfill waste settling measurement device according to claim 4, characterized in that: The first signal receiver (15) is fixedly mounted on the mounting platform (11).

7. A method for measuring landfill waste settlement, the method being applicable to the landfill waste settlement measuring equipment according to any one of claims 1-6, characterized in that, Includes the following steps: S1: Establish a first planar coordinate system based on the landfill (1), and establish a second planar coordinate system based on the base (21); S2: Determine the position of each of the measuring rods (31) within the landfill (1) G m (X) m Y m ), to obtain the positional distribution of each of the measuring rods (31) within the landfill (1); S3: Measure the settlement value r at each measuring rod (31).

8. The method for measuring landfill waste settlement according to claim 7, characterized in that: The first plane coordinate system can be established based on the landfill (1) by taking the point projected by the first laser rangefinder (22) onto the first signal receiver (15) as the origin O, the straight line where the first laser rangefinder (22) is located as the X-axis, the direction towards the first laser rangefinder (22) as the positive direction of the X-axis, the straight line where the lower edge of the first signal receiver (15) is located as the Y-axis, and the direction to the right horizontally as the positive direction of the Y-axis. Based on the base (21), the origin o is the intersection of the axis of the connecting pipe (26) and the signal receiving board (24). The x-axis is the straight line parallel to the X-axis, the positive direction of the X-axis is the positive direction of the x-axis, the y-axis is the straight line parallel to the Y-axis, and the positive direction of the Y-axis is the positive direction of the y-axis. Thus, a second planar coordinate system can be established based on the base (21).

9. A method for measuring landfill waste settlement according to claim 7, characterized in that: Let P be the point where the infrared sensor (25) is located. Let l1 be the distance measured by the first laser rangefinder (22) and l2 be the distance measured by the second laser rangefinder (23). Let a be the distance a from the end of the first laser rangefinder (22) to the origin o of the second plane coordinate system. Let b1 be the distance b2 from the infrared sensor (25) to the origin o of the second plane coordinate system. Let b2 be the distance b2 from the end of the infrared sensor (25) to the end of the second laser rangefinder (23). The coordinates of the point on the signal receiving board (24) projected by the infrared sensor (25) are the coordinates P(x, y) of the infrared sensor (25) in the second plane coordinate system. Combining the above data, the coordinates G of each measuring rod (31) in the first plane coordinate system can be obtained. m (x*(b2+l2) / b1+a+l1, y*(b2+l2) / b1).

10. A method for measuring landfill waste settlement according to claim 1, characterized in that: The initial height of the point on the second signal receiver (32) on each measuring rod (31) projected by the second laser rangefinder (23) is h0. During the measurement process, the height of the point on the second signal receiver (32) on each measuring rod (31) projected by the second laser rangefinder (23) is h, and the settlement value is r = h - h0.

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