Self-powered displacement measuring device

Abstract

The invention discloses a self-powered displacement measuring device, and relates to the field of displacement measurement, the self-powered displacement measuring device comprises a first measuring assembly and a second measuring assembly, the first measuring assembly comprises a fixing piece and a connecting rope, and the connecting rope is connected with the fixing piece; the second measurement assembly comprises a shell, a displacement amplification mechanism and a power generation mechanism, a connecting rope is wound on the displacement amplification mechanism, the displacement amplification mechanism can rotate relative to the shell, the power generation mechanism comprises a displacement friction conductive part and a first friction block, and the displacement friction conductive part is annularly arranged; comprising a plurality of first conductive friction plates which are arranged in a trapezoid shape and sequentially connected in the circumferential direction of the first friction block, the first friction block is arranged on the displacement amplification mechanism, the first friction block rubs with the first conductive friction plates when the displacement amplification mechanism rotates and generates a plurality of displacement electric signals, and the displacement electric signals are continuous electric signals with the amplitude changing according to a preset rule; the signal processor is arranged in the shell and is electrically connected with the displacement friction conductive part and the external control terminal; therefore, self-powered monitoring of the device is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of displacement measurement devices, and particularly relates to a self-powered displacement measurement device. Background Art

[0002] A landslide refers to a geological disaster in which a mountain body, under the action of gravity and influenced by natural or human factors, causes soil, rock, or other surface materials to slide rapidly along the slope. Landslides usually occur during the rainy season, earthquakes, over-reclamation, or other human activities. When a landslide occurs, the slope materials lose stability, resulting in rapid movement of soil and rock, seriously damaging the surrounding natural environment and human facilities. Landslides can not only destroy the vegetation on the mountain, but also trigger a series of environmental problems such as floods and soil erosion, affecting water quality and land use. The threat of landslides to human life and property is particularly serious, often causing direct casualties and significant economic losses. For example, landslides can destroy infrastructure such as transportation roads, houses, and bridges, making rescue and recovery work in the disaster area extremely difficult. Therefore, the monitoring of landslide disasters is particularly important. Identifying landslide risks in advance and taking effective countermeasures can effectively reduce the damage and casualties caused by them.

[0003] To effectively monitor landslides, displacement sensors are generally used for monitoring. However, displacement sensors rely on external power supply, which limits their application in remote mountainous areas or post-disaster environments, especially in some areas where it is not convenient to access the power grid. Moreover, in some harsh environments, problems such as complex wiring and difficulty in replacing batteries also limit the use of displacement sensors. Summary of the Invention

[0004] The main object of the present invention is to propose a self-powered displacement measurement device to solve the above problems.

[0005] To achieve the above object, a self-powered displacement measurement device proposed by the present invention includes:

[0006] A first measurement component for being installed in a mountain body, including a fixing member and a connecting rope, and a first end of the connecting rope is connected to the fixing member;

[0007] The second measurement component, which is used to be installed in the mountain body, includes a housing, a displacement amplification mechanism and a power generation mechanism. The displacement amplification mechanism and the power generation mechanism are arranged in the housing. The second end of the connecting rope is wound around the displacement amplification mechanism and can rotate relative to the housing around the axis of the housing by means of the connecting rope under the action of the fixing member. The power generation mechanism includes a displacement friction conductive part and a first friction block. The displacement friction conductive part is arranged in the housing, is arranged on the outer periphery of the displacement amplification mechanism and is arranged in a ring shape. The displacement friction conductive part includes a plurality of first conductive friction sheets connected in sequence along its circumferential direction. Each of the first conductive friction sheets is trapezoidally arranged. The first friction block is arranged on the displacement amplification mechanism and is in contact with the displacement friction conductive part to generate a plurality of displacement electrical signals by friction with the plurality of first conductive friction sheets when the displacement amplification mechanism rotates. Each of the displacement electrical signals is a continuous electrical signal with an amplitude changing according to a preset rule.

[0008] The signal processor is arranged in the housing and is used to be electrically connected to the displacement friction conductive part and an external control terminal to calculate the displacement according to the number of the displacement electrical signals.

[0009] Optionally, each of the first conductive friction sheets is rotated 90° clockwise around a preset vertex thereof.

[0010] Each of the displacement electrical signals is a continuous electrical signal with an increasing amplitude.

[0011] Optionally, the displacement amplification mechanism includes a primary amplification structure, and the primary amplification structure includes:

[0012] The first transmission shaft is arranged in the middle of the housing and extends along the height direction of the housing.

[0013] The wire winder is sleeved outside the first transmission shaft and is fixedly connected to the first transmission shaft. The second end of the connecting rope is wound around the wire winder; and,

[0014] The amplification gear is sleeved outside the first transmission shaft, is located below the wire winder and is fixedly connected to the first transmission shaft. The radius of the amplification gear is n times that of the wire winder gear, and n > 1.

[0015] The first friction block is connected to the tooth part of the amplification gear to rotate under the action of the amplification gear.

[0016] Optionally, the displacement amplification mechanism further includes a secondary amplification structure, and the secondary amplification structure includes:

[0017] A lever is sleeved outside the first transmission shaft and can rotate relative to the first transmission shaft around the axis of the first transmission shaft, and is located below the amplification gear. The distance between the first end of the lever and the first transmission shaft is m times the distance between the second end of the lever and the first transmission shaft, and m > 1;

[0018] An intermediate gear is located on the side of the amplification gear close to the second end and is meshed with the amplification gear in a matching manner; and,

[0019] A second transmission shaft extends along the height direction of the housing. One end of the second transmission shaft is inserted into the middle of the intermediate gear and is fixedly connected to the intermediate gear. The other end of the second transmission shaft is fixedly connected to the second end of the lever, so as to drive the lever to rotate under the force of the intermediate gear;

[0020] The first friction block is arranged at the first end of the lever.

[0021] Optionally, the second measurement assembly further includes an early warning mechanism. The early warning mechanism includes an early warning friction conductive part and a second friction block. The early warning friction conductive part is arranged in the housing, located outside the displacement amplification mechanism, and on one side of the displacement friction conductive part in the height direction of the housing. The early warning friction conductive part includes a plurality of second conductive friction sheets, and the plurality of second conductive friction sheets are distributed at intervals along the circumferential direction of the displacement friction conductive part. The second friction block is arranged on the displacement amplification mechanism and is used for generating an early warning electrical signal when rubbing against one of the second conductive friction sheets during the process of being driven by the displacement amplification mechanism to rotate;

[0022] The signal processor is electrically connected to the early warning friction conductive part.

[0023] Optionally, the second conductive friction sheet is prepared by using copper foil;

[0024] The second friction block is prepared by using polyimide material.

[0025] Optionally, an installation frame is further arranged in the housing. The installation frame is sleeved on the outer periphery of the second measurement assembly, and its end face is circular. The displacement friction conductive part is arranged on the inner peripheral wall of the installation frame.

[0026] Optionally, the first conductive friction sheet is prepared by using copper foil;

[0027] The first friction block is prepared by using polyimide material.

[0028] Optionally, the fixing member includes a fixing column and a nail part. The fixing column is connected to the first end of the connecting rope, and the nail part is arranged at one end of the fixing column and is used for being nailed into the mountain body.

[0029] Optionally, the fixing member further includes a connecting ring disposed at the other end of the fixing post, around which the first end of the connecting rope is wound.

[0030] In the technical solution of the present invention, when a landslide displacement occurs, the distance between the fixing member and the second measuring assembly increases, and the connecting rope drives the displacement amplifying mechanism to rotate, thereby amplifying the landslide displacement. Then, the displacement amplifying mechanism drives the first friction block to rotate, so that the first friction block rubs against the displacement friction conductive part and generates a plurality of displacement electrical signals. Since the first friction block rubbing against an entire first conductive friction sheet can generate a continuous electrical signal whose amplitude changes according to a preset law, and the length of the first conductive friction sheet in the circumferential direction of the housing corresponds to a certain landslide displacement, therefore, the signal processor can calculate the final landslide displacement according to the number of the displacement electrical signals, effectively monitoring the landslide; at the same time, the first friction block generates electricity by rubbing against the displacement friction conductive part, and can supply power to the signal processor through the displacement friction conductive part, realizing self-powered monitoring of the device, without the need for external power supply, expanding the application range and improving the practicability. Description of the Drawings

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0032] Figure 1 The front view of an embodiment of the self-powered displacement measuring device provided by the present invention;

[0033] Figure 2 For Figure 1 The partial structural schematic diagram of the self-powered displacement measuring device in

[0034] Figure 3 For Figure 1 The cross-sectional view of the partial structure of the self-powered displacement measuring device in

[0035] Figure 4 For Figure 2 The partial structural schematic diagram of the self-powered displacement measuring device in

[0036] Figure 5 For Figure 2 The schematic diagram of the first friction block of the self-powered displacement measuring device in rubbing against different parts of the first conductive friction sheet.

[0037] Explanation of the Reference Numerals in the Drawings

[0038]

[0039]

[0040] The realization, functional features and advantages of the present invention will be further described in conjunction with the embodiments with reference to the accompanying drawings. Specific embodiments

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0042] It should be noted that if there are directional indications (such as up, down, left, right, front, back,...) in the embodiments of the present invention, then the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0043] In addition, if there are descriptions such as "first" and "second" in the embodiments of the present invention, then the descriptions of "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution that satisfies both A and B at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0044] In order to effectively monitor landslides, displacement sensors are generally used for monitoring. However, displacement sensors rely on external power supply, which limits their application in remote mountainous areas or post-disaster environments, especially in some areas where it is not convenient to access the power grid. Moreover, in some harsh environments, problems such as complex wiring and difficult battery replacement also limit the use of displacement sensors.

[0045] In view of this, the present invention provides a self-powered displacement measuring device 100. Figures 1 to 4 This is an embodiment of the self-powered displacement measuring device 100 provided by the present invention.

[0046] Please refer to Figures 1 to 4 , the self-powered displacement measurement device 100 includes a first measurement component and a second measurement component. The first measurement component is used to be installed in the mountain body and includes a fixing member 1 and a connecting rope 2. The first end of the connecting rope 2 is connected to the fixing member 1. The second measurement component is used to be installed in the mountain body and includes a housing 3, a displacement amplification mechanism 4 and a power generation mechanism. The displacement amplification mechanism 4 and the power generation mechanism are arranged in the housing 3. The second end of the connecting rope 2 is wound around the displacement amplification mechanism 4 and can rotate relative to the housing 3 around the axis of the housing 3 by the force of the connecting rope 2 on the fixing member 1. The power generation mechanism includes a displacement friction conductive part 5 and a first friction block 52. The displacement friction conductive part 5 is arranged in the housing 3 and is arranged on the outer periphery of the displacement amplification mechanism 4 and is arranged in a ring shape. The displacement friction conductive part 5 includes a plurality of first conductive friction sheets 51 connected in sequence along its circumferential direction. Each of the first conductive friction sheets 51 is trapezoidally arranged. The first friction block 52 is arranged on the displacement amplification mechanism 4 and is in contact with the displacement friction conductive part 5 to generate a plurality of displacement electrical signals by friction with the plurality of first conductive friction sheets 51 when the displacement amplification mechanism 4 rotates. Each of the displacement electrical signals is a continuous electrical signal with an amplitude changing according to a preset rule. The signal processor is arranged in the housing 3 and is used to be electrically connected to the displacement friction conductive part 5 and an external control terminal to calculate the displacement according to the number of the displacement electrical signals.

[0047] In the technical solution of the present invention, when a landslide displacement occurs, the distance between the fixing member 1 and the second measurement component increases, and the connecting rope 2 drives the displacement amplification mechanism 4 to rotate, so as to amplify the landslide displacement. Then, the displacement amplification mechanism 4 drives the first friction block 52 to rotate, so that the first friction block 52 generates a plurality of displacement electrical signals by friction with the displacement friction conductive part 5. Since the first friction block 52 can generate a continuous electrical signal with an amplitude changing according to a preset rule by friction with an entire first conductive friction sheet 51, and the length of the first conductive friction sheet 51 in the circumferential direction of the housing 3 corresponds to a certain landslide displacement, therefore, the signal processor can calculate the final landslide displacement according to the number of the displacement electrical signals, effectively monitoring the landslide of the mountain body. At the same time, the first friction block 52 generates electricity by friction with the displacement friction conductive part 5, and can supply power to the signal processor through the displacement friction conductive part 5, realizing self-powered monitoring of the device, without the need for external power supply, expanding the application range and improving the practicability.

[0048] It should be noted that, in one embodiment of the present invention, the displacement friction conductive part 5 is electrically connected to the signal processor via a wire, and the signal processor is wirelessly connected to the external control terminal. Further, a circuit board is provided in the housing 3, and the signal processor is electrically connected to the wire via the circuit board.

[0049] It should also be noted that, in one embodiment of the present invention, a wire hole is opened on one side wall of the housing 3 to allow the second end of the connecting rope 2 to extend into the housing 3 and connect with the displacement amplification mechanism 4 .

[0050] Since the amplitude of the friction output electrical signal is related to the contact area, the larger the contact area, the larger the amplitude of the output electrical signal. In other words, the larger the contact area between the first friction block 52 and the first conductive friction plate 51, the larger the amplitude of the displacement electrical signal. Figure 5 In one embodiment of the present invention, each of the first conductive friction plates 51 rotates 90 degrees in a clockwise direction around a preset vertex. ° Each of the displacement electrical signals is a continuous electrical signal with gradually increasing amplitude, which is convenient for identification and calculation. More specifically, the first conductive friction plate 51 is arranged in an isosceles trapezoidal shape.

[0051] For details, please refer to Figures 2 to 4 The displacement amplification mechanism 4 includes a primary amplification structure 41, and the primary amplification structure 41 includes a first transmission shaft 411, a reel 412 and an amplification gear 413; the first transmission shaft 411 is arranged in the middle of the shell 3 and extends along the height direction of the shell 3; the reel 412 is sleeved outside the first transmission shaft 411 and is fixedly connected to the first transmission shaft 411, and the second end of the connecting rope 2 is wound around the reel 412; the amplification gear 413 is sleeved outside the first transmission shaft 411, and is located below the reel 412, and is fixedly connected to the first transmission shaft 411, the radius of the amplification gear 413 is n times that of the reel 412 gear, and n>1; the first friction block 52 is connected to the tooth portion of the amplification gear 413 to be subjected to the force of the amplification gear 413 to rotate.

[0052] In this way, when a landslide displacement of 1 mm occurs, the connecting rope 2 is pulled 1 mm and drives the reel 412 to rotate. At this time, the reel 412 drives the amplifying gear 413 to rotate via the first transmission shaft 411. The radius of the amplifying gear 413 is n times that of the reel 412 gear. Therefore, the linear displacement of the amplifying gear 413 is l×nmm, which means that the tiny landslide displacement is amplified n times.

[0053] It should be noted that the amplification factor of the landslide displacement can be adjusted by adjusting the radius of the reel 412.

[0054] Furthermore, please refer to Figures 2 to 4 , the displacement amplification mechanism 4 further includes a secondary amplification structure 42. The secondary amplification structure 42 includes a lever 421, an intermediate gear 422, and a second transmission shaft 423. The lever 421 is sleeved outside the first transmission shaft 411 and can rotate relative to the first transmission shaft 411 around the axis of the first transmission shaft 411, and is located below the amplification gear 413. The distance between the first end of the lever 421 and the first transmission shaft 411 is m times the distance between the second end of the lever 421 and the first transmission shaft 411, and m > 1; the intermediate gear 422 is located on one side of the amplification gear 413 close to the second end and is meshed with the amplification gear 413 in a matching manner; the second transmission shaft 423 extends along the height direction of the housing 3, one end of which is inserted into the middle of the intermediate gear 422 and is fixedly connected to the intermediate gear 422, and the other end of the second transmission shaft 423 is fixedly connected to the second end of the lever 421 to drive the lever 421 to rotate by applying force to the intermediate gear 422; the first friction block 52 is arranged at the first end of the lever 421.

[0055] In this way, when a landslide displacement occurs, the linear displacement of the intermediate gear 422 is the same as the linear displacement of the amplification gear 413. At this time, the intermediate gear 422 is fixedly connected to the second end of the lever 421 through the second transmission shaft 423, and the distance between the first end of the lever 421 and the first transmission shaft 411 is m times the distance between the second end of the lever 421 and the first transmission shaft 411. Therefore, the landslide displacement is further amplified by m times to obtain a larger displacement of the lever 421.

[0056] More specifically, in an embodiment of the present invention, n = 2 and m = 5, that is, the radius of the amplification gear 413 is twice that of the gear of the reel 412, and the distance between the first end of the lever 421 and the first transmission shaft 411 is five times the distance between the second end of the lever 421 and the first transmission shaft 411. In this way, the landslide displacement can be first amplified by 2 times through the primary amplification structure 41 and then further amplified by 5 times through the secondary amplification structure 42. That is to say, the landslide displacement can be amplified by 10 times as a whole. More specifically, when a landslide displacement of 1 mm occurs, it can be amplified by 10 times through the displacement amplification mechanism 4, that is, the 1 mm landslide displacement is amplified to a 10 mm displacement, realizing the measurement of landslide displacement at the mm level.

[0057] Specifically, please refer to Figure 2 and Figure 3, the second measurement component further includes a warning mechanism, the warning mechanism includes a warning friction conductive part and a second friction block, the warning friction conductive part is arranged in the housing 3, located outside the displacement amplification mechanism 4, and on one side of the displacement friction conductive part 5 in the height direction of the housing 3, and includes a plurality of second conductive friction sheets 6. The plurality of second conductive friction sheets 6 are circumferentially spaced along the displacement friction conductive part 5. The second friction block is arranged on the displacement amplification mechanism 4 to generate a warning electrical signal when frictionally contacting one of the second conductive friction sheets 6 during the rotation of the displacement amplification mechanism 4 under force; the signal processor is electrically connected to the warning friction conductive part.

[0058] In this way, the more warning electrical signals received by the signal processor, the greater the landslide displacement. Thus, the signal processor can generate alarms of corresponding levels according to the number of warning electrical signals. For example, when the signal processor receives the first warning electrical signal, it can generate a first-level alarm and transmit it to the external control terminal to remind the staff. When it receives the second warning electrical signal, it can generate a second-level alarm. When it receives the third warning electrical signal, it can generate a third-level alarm, and so on. The danger level can be defined according to actual needs. For example, when a sixth-level alarm is generated, the site needs to be processed to prevent major hazards caused by the landslide.

[0059] It should be noted that the friction between the second friction block and the second conductive friction sheet 6 can generate electricity to supply power for the operation of the signal processor.

[0060] More specifically, the number of the second conductive friction sheets 6 is not limited. More specifically, in an embodiment of the present invention, six second conductive friction sheets 6 are provided. The six second conductive friction sheets 6 are evenly circumferentially spaced along the displacement friction conductive part 5. In this way, the second friction block can generate a warning electrical signal by frictional contact with one of the second conductive friction sheets 6 every time it rotates 60°.

[0061] More specifically, based on the embodiment of "the displacement amplification mechanism 4 further includes a secondary amplification structure 42. The secondary amplification structure 42 includes a lever 421, an intermediate gear 422, and a second transmission shaft 423. The lever 421 is sleeved outside the first transmission shaft 411 and can rotate relative to the first transmission shaft 411 around the axis of the first transmission shaft 411, and is located below the amplification gear 413. The distance between the first end of the lever 421 and the first transmission shaft 411 is m times the distance between the second end of the lever 421 and the first transmission shaft 411, and m > 1; the intermediate gear 422 is located on one side of the amplification gear 413 close to the second end and is meshed with the amplification gear 413 in a matching manner; the second transmission shaft 423 extends along the height direction of the housing 3, one end of which is inserted into the middle of the intermediate gear 422 and is fixedly connected to the intermediate gear 422, and the other end of the second transmission shaft 423 is fixedly connected to the second end of the lever 421 to drive the lever 421 to rotate by the force on the intermediate gear 422; the first friction block 52 is arranged at the first end of the lever 421", on the second transmission shaft 423, there is a third transmission shaft 8 extending radially along it. The third transmission shaft 8 is arranged corresponding to the height of the warning friction conductive part, and the second friction block is arranged at one end of the third transmission shaft 8 far from the second transmission shaft 423.

[0062] Specifically, in an embodiment of the present invention, the second conductive friction sheet 6 is prepared by using copper foil, and the second friction block is prepared by using polyimide material.

[0063] Specifically, please refer to Figure 2 and Figure 3 , an installation frame 7 is further arranged in the housing 3. The installation frame 7 is sleeved on the outer periphery of the second measurement assembly, and its end face is circular. The displacement friction conductive part 5 is arranged on the inner peripheral wall of the installation frame 7. More specifically, the displacement friction conductive part 5 is bonded to the inner peripheral wall of the installation frame 7.

[0064] Further, based on the embodiment described above, "the second measurement component further includes a warning mechanism, the warning mechanism includes a warning friction conductive part and a second friction block, the warning friction conductive part is disposed in the housing 3, and is located outside the displacement amplification mechanism 4, and is located on one side of the displacement friction conductive part 5 in the height direction of the housing 3, and includes a plurality of second conductive friction sheets 6, the plurality of second conductive friction sheets 6 are circumferentially spaced apart along the displacement friction conductive part 5, the second friction block is disposed on the displacement amplification mechanism 4, and is used for generating a warning electrical signal when rubbing against one of the second conductive friction sheets 6 during the rotation of the displacement amplification mechanism 4 under force; the signal processor is electrically connected to the warning friction conductive part", a plurality of second conductive friction sheets 6 are disposed on the inner peripheral wall of the mounting bracket 7.

[0065] Specifically, in an embodiment of the present invention, the first conductive friction sheet 51 is prepared from copper foil; the first friction block 52 is prepared from a polyimide material.

[0066] Specifically, please refer to Figure 1 , the fixing member 1 includes a fixing column 11 and a nail portion 12, the fixing column 11 is connected to the first end of the connecting rope 2, and the nail portion 12 is disposed at one end of the fixing column 11 and is used for nailing into the mountain body to improve the installation stability.

[0067] Further, please refer to Figure 1 , the fixing member 1 further includes a connecting ring 13, the connecting ring 13 is disposed at the other end of the fixing column 11, and the first end of the connecting rope 2 is wound around it to improve the connection stability.

[0068] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A self-powered displacement measuring device, characterized in that: The self-powered displacement measuring device comprises: A first measuring assembly, used for installation in a mountain, comprises a fixing member and a connecting rope, wherein a first end of the connecting rope is connected to the fixing member; A second measuring assembly is used to be installed in a mountain, and comprises a housing, a displacement amplifying mechanism and a power generating mechanism. The displacement amplifying mechanism and the power generating mechanism are arranged in the housing. The second end of the connecting rope is wound around the displacement amplifying mechanism, and the connecting rope can be applied to the fixing member to rotate relative to the housing around the axis of the housing. The power generating mechanism comprises a displacement friction conductive part and a first friction block. The displacement friction conductive part is arranged in the housing and arranged on the outer periphery of the displacement amplifying mechanism and is arranged in an annular shape. The displacement friction conductive part comprises a plurality of first conductive friction plates sequentially connected and arranged along the circumference thereof, and each of the first conductive friction plates is arranged in a trapezoidal shape. The first friction block is arranged on the displacement amplifying mechanism and abuts against the displacement friction conductive part, so as to rub against the plurality of first conductive friction plates when the displacement amplifying mechanism rotates and generate a plurality of displacement electrical signals, and each of the displacement electrical signals is a continuous electrical signal whose amplitude changes according to a preset rule. A signal processor is disposed in the housing and is used to be electrically connected to the displacement friction conductive part and the external control terminal to calculate the displacement according to the number of the displacement electrical signals.

2. The self-powered displacement measuring device according to claim 1, characterized in that: Each of the first conductive friction plates is arranged to be rotated 90° in a clockwise direction around a preset vertex thereof; Each of the displacement electrical signals is a continuous electrical signal with a gradually increasing amplitude.

3. The self-powered displacement measuring device according to claim 1, characterized in that: The displacement amplification mechanism includes a primary amplification structure, and the primary amplification structure includes: A first transmission shaft is disposed in the middle of the housing and extends along the height direction of the housing; a wire reel, which is sleeved outside the first transmission shaft and fixedly connected to the first transmission shaft, and the second end of the connecting rope is wound around the wire reel; and an amplifying gear, which is sleeved outside the first transmission shaft, is located below the wire reel, and is fixedly connected to the first transmission shaft, wherein the radius of the amplifying gear is n times that of the wire reel gear, and n>1; The first friction block is connected to the tooth portion of the amplifying gear to be subjected to the force of the amplifying gear to rotate.

4. The self-powered displacement measuring device according to claim 3, characterized in that: The displacement amplification mechanism further includes a secondary amplification structure, and the secondary amplification structure includes: A lever is sleeved outside the first transmission shaft and can rotate relative to the first transmission shaft around the axis of the first transmission shaft and is located below the amplifying gear. The distance between the first end of the lever and the first transmission shaft is m times the distance between the second end of the lever and the first transmission shaft, and m>1; a transition gear, located on a side of the amplifying gear close to the second end and adapted to mesh with the amplifying gear; and, A second transmission shaft is extended along the height direction of the housing, one end of which is inserted into the middle of the transition gear and fixedly connected to the transition gear, and the other end of the second transmission shaft is fixedly connected to the second end of the lever to be driven by the transition gear to rotate; The first friction block is arranged at the first end of the lever.

5. The self-powered displacement measuring device according to any one of claims 1 to 4, characterized in that: The second measuring assembly further includes an early warning mechanism, the early warning mechanism includes an early warning friction conductive part and a second friction block, the early warning friction conductive part is arranged in the housing, outside the displacement amplifying mechanism, and located on one side of the displacement friction conductive part in the height direction of the housing, including a plurality of second conductive friction plates, the plurality of second conductive friction plates are distributed at intervals along the circumference of the displacement friction conductive part, and the second friction block is arranged on the displacement amplifying mechanism, and is used to generate an early warning electrical signal when rubbing against a second conductive friction plate during the rotation of the displacement amplifying mechanism under the force; The signal processor is electrically connected to the early warning friction conductive part.

6. The self-powered displacement measuring device according to claim 5, characterized in that: The second conductive friction plate is made of copper foil; The second friction block is made of polyimide material.

7. The self-powered displacement measuring device according to claim 1, characterized in that: A mounting frame is also provided in the housing. The mounting frame is sleeved on the outer periphery of the second measuring component, and its end face is circular. The displacement friction conductive part is provided on the inner peripheral wall of the mounting frame.

8. The self-powered displacement measuring device according to claim 1, characterized in that: The first conductive friction plate is made of copper foil; The first friction block is made of polyimide material.

9. The self-powered displacement measuring device according to claim 1, characterized in that: The fixing member includes a fixing column and a nail portion, wherein the fixing column is connected to the first end of the connecting rope, and the nail portion is arranged at one end of the fixing column and is used for being nailed into the mountain body.

10. The self-powered displacement measuring device according to claim 9, characterized in that: The fixing member further comprises a connecting ring, which is arranged at the other end of the fixing column and is wound with the first end of the connecting rope.

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