Laser ranging device and method for land investigation and monitoring

Abstract

The invention relates to the technical field of laser distance measuring devices, and particularly discloses a laser distance measuring device and method for land investigation monitoring, and the device comprises a laser radar, a moving plate, and a calibration mechanism which is disposed on the side wall of the moving plate and is used for calibrating the laser radar, and the front surface of the laser radar is provided with a transmitting mirror and a receiving mirror. According to the laser radar calibration device, the calibration mechanism is used for calibrating the laser radar during intermittent use, so that the distance measurement accuracy of the laser radar can be conveniently mastered, the laser radar can be conveniently calibrated according to the actual measurement condition, the calibration effect is improved, and the calibration efficiency is improved. The position of the calibration plate is conveniently mastered through the pressure sensor and the like, so that the calibration precision is improved, the transmitting mirror and the receiving mirror which are usually arranged in the concave position are conveniently cleaned through the cleaning mechanism, the cleaning effect is good, and the dust and the like are prevented from influencing the ranging precision of the laser radar.

Description

Technical Field

[0001] The invention relates to the technical field of laser distance measuring devices, and in particular to a laser distance measuring device and method for land survey and monitoring. Background Art

[0002] Land survey refers to the activity of comprehensive investigation and monitoring of natural resources within the national territory. In order to conduct land survey, it is necessary to survey the borders of the country and other locations through laser ranging devices.

[0003] A laser rangefinder distance calibration device and method with announcement number CN117269942B, the problem raised in the background technology is: in the traditional distance measurement calibration method, the number of rangefinders calibrated each time is small and the calibration distance is short, which affects the calibration efficiency and accuracy of the laser rangefinder; at the same time, the calibration device cannot provide feedback on the axial and radial postures of the rangefinder clamping mechanism used to fix the laser rangefinder to be calibrated, so that the verticality deviation of the rangefinder calibration device is large after the equipment is used for a long time, which is not conducive to the calibration of the laser rangefinder.

[0004] A ranging device for environmental field investigation with announcement number CN218037349U has the following problem in its background technology: the laser emitting mirror and the laser receiving mirror, which are the light input and output ends, need to be kept dry and dust-free at all times. However, since the operating environment is generally outdoors, the two lenses are very easy to be blocked or covered by dust, water mist and the like, which affects the ranging use.

[0005] Based on the existing technology, there are the following problems: In the prior art, laser ranging devices for land surveys are usually used for ranging in the field for a long time. During the ranging process, it is not convenient to calibrate the laser ranging device, or the calibration does not fit the actual situation of the land survey, or it is not convenient to grasp the position between the calibration mechanism and the laser radar, which reduces the accuracy of the calibration, and thus is not convenient to grasp the accuracy of the ranging, affecting the accuracy of the land survey. In addition, since the transmitting mirror and the receiving mirror of the laser ranging device are usually arranged in a concave position, the existing laser ranging device has a poor cleaning effect when cleaning it. Referring to the above application documents, although the laser ranging device can be calibrated and cleaned, the calibration accuracy and the cleaning effect are not good, and there are certain shortcomings. In order to solve the above problems, a laser ranging device and method for land survey monitoring are proposed. Summary of the invention

[0006] In order to overcome the shortcomings of the above-mentioned prior art, the present invention provides a laser ranging device and method for land survey and monitoring, which improves the accuracy of calibration of the laser ranging device and is suitable for actual land survey use, and facilitates cleaning of the transmitting mirror and the receiving mirror located in the concave part to avoid affecting the use of laser ranging.

[0007] To achieve the above purpose, the present invention is implemented by the following technical scheme: a laser ranging device for land survey and monitoring, including a connecting piece, a laser radar, a movable plate and a calibration mechanism arranged on the side wall of the movable plate for calibrating the laser radar, the front of the laser radar is provided with a transmitting mirror and a receiving mirror, the side wall of the movable plate is provided with a cleaning mechanism for cleaning the transmitting mirror and the receiving mirror and arranged at intervals, and the calibration mechanism includes: The mounting tube is fixedly sleeved on the side wall of the movable plate, the inner wall of the mounting tube is sleeved with a first plate body, a calibration plate is fixedly provided on a side of the first plate body close to the laser radar, and a corrugated groove is provided on a side of the calibration plate close to the laser radar, so as to judge the accuracy of the laser radar ranging through the distance between the calibration plate and the laser radar; The second plate body is fixedly sleeved on the inner wall of the mounting tube, a threaded rod is threadedly connected at the center of the side wall of the second plate body, a mounting plate is rotatably provided on one end of the side wall of the threaded rod located between the first plate body and the second plate body, and a pressure sensor is fixedly provided on the side of the mounting plate close to the first plate body.

[0008] Furthermore, the calibration mechanism further comprises: The first rod body is fixedly arranged on a side of the first plate body close to the second plate body, and the side wall of the first rod body is sleeved at the center of the side wall of the mounting plate and the threaded rod, so that the end of the first rod body away from the first plate body extends to the side of the second plate body away from the first plate body, and the end of the first rod body away from the first plate body is fixedly sleeved with a retaining ring, and the retaining ring cooperates with the threaded rod stopper to limit the first rod body from being separated from the threaded rod, and the center of the side wall of the mounting plate and the threaded rod is provided with a first through hole for sleeved with the first rod body, the pressure sensor adopts an annular pressure sensor, and the inner wall of the pressure sensor is sleeved on the outer side of the first rod body, and the side wall of the first rod body and located between the pressure sensor and the first plate body are sleeved with a first spring.

[0009] Further, the cleaning mechanism comprises: The mounting shell is fixedly sleeved on the side wall of the movable plate, and a first cleaning cotton plate is movably arranged on a side of the mounting shell close to the laser radar, and a first driving assembly for driving the first cleaning cotton plate to move is arranged inside the mounting shell, and a rotating assembly is arranged inside the first driving assembly, which is linked with the first driving assembly and is used to drive the first cleaning cotton plate to rotate, and the first driving assembly includes: The first electromagnet is fixedly arranged on the inner wall of the mounting shell away from the laser radar, and the inner wall of the mounting shell is sleeved with the second electromagnet. The first electromagnet and the second electromagnet are both designed in an annular shape.

[0010] Furthermore, the first driving component also includes: The first rotating member is fixedly arranged on a side of the second electromagnet away from the first electromagnet, and a connecting shell extending to the outside of the mounting shell is rotatably provided on the inner wall of the first rotating member, and one end of the connecting shell located outside the mounting shell is fixedly connected to the first cleaning cotton plate to drive the first cleaning cotton plate to move through the first electromagnet and the second electromagnet, and a second through hole for sleeve-mounting the connecting shell is provided on the side wall of the mounting shell, and a second spring is sleeved on the outer wall of one end of the connecting shell located in the mounting shell and on the side of the second electromagnet away from the first electromagnet, and the side of the connecting shell close to the first electromagnet is designed to be open.

[0011] Furthermore, the rotating assembly comprises: The second rod body is fixedly arranged on the inner wall of one side of the mounting shell close to the first electromagnet and sleeved on the inner wall of the first electromagnet. One end of the second rod body away from the first electromagnet extends into the connecting shell. One end of the second rod body located in the connecting shell is provided with a blowing assembly for blowing air to the transmitting mirror and the receiving mirror. A side wall of the second rod body is provided with a limiting assembly. A toothed plate is fixedly arranged on the top of the second rod body and embedded in the second rod body, a first gear is meshed on the top of the toothed plate, a first rotating shaft is fixedly arranged on the inner wall of the first gear, and a transmission mechanism is arranged at the end of the first rotating shaft, so that the first rotating shaft is connected to the second gear through the transmission mechanism, so that the transmission directions of the first gear and the second gear are arranged vertically; The first tooth grooves are arranged in an annular array on the inner side wall of the connecting shell and mesh with the second gear.

[0012] Furthermore, the limiting component includes: A second rotating member is fixedly arranged on an outer wall of an end of the connecting shell close to the first electromagnet, and a baffle is rotatably arranged on the inner wall of the second rotating member so that the baffle is rotatably connected to the connecting shell, and a side of the baffle close to the connecting shell is rotatably connected to the first gear and the second gear; The guide rod is fixedly arranged on the inner wall of one side of the mounting shell close to the first electromagnet. The guide rod is located on the inner side of the first electromagnet and on both sides of the second rod body. The end of the guide rod away from the first electromagnet passes through the baffle and extends into the connecting shell to limit the baffle. The side wall of the baffle is provided with a third through hole for sleeve-mounting the guide rod.

[0013] Further, the blowing assembly comprises: An air guide groove is provided on a side of the first cleaning cotton plate close to the laser radar, and a second cleaning cotton plate is fixedly provided on the inner wall of the air guide groove, the first cleaning cotton plate and the second cleaning cotton plate are vertically aligned on a side close to the laser radar, and a side wall of the second cleaning cotton plate is provided with air guide holes arranged in a circular array; The telescopic tube is fixedly arranged at one end of the second rod body located in the connecting shell, and a conduit extending into the air guide groove is fixedly arranged at one end of the telescopic tube away from the second rod body. A fourth through hole for sleeve-mounting the conduit is opened on the side wall of the connecting shell, and a limiting ring is fixedly sleeved on the outer wall of the conduit and located in the connecting shell and the air guide groove to limit the conduit.

[0014] Furthermore, a mounting seat is fixedly provided on the top of the connecting member, a mounting groove is provided on the top of the mounting seat, the laser radar is disassembled and arranged in the mounting groove, and a cover plate is disassembled and arranged on the top of the mounting seat; The side wall of the mounting seat and the front and back sides of the laser radar are provided with notches connected to the mounting groove, so that the laser radar can measure the land along the notch on the front side of the laser radar. A cleaning component is provided at the notch on the back side of the laser radar. An annular groove connected to the mounting groove and the notch is provided inside the mounting seat and outside the laser radar. The movable plate is arranged in the annular groove, and the movable plate is designed in an arc shape. A second driving component for driving the movable plate to move along the annular groove is provided inside the annular groove. The second driving component includes: The bottom plate is fixedly arranged on the bottom inner wall of the annular groove, the top of the bottom plate is slidably provided with an annular plate, the top of the annular plate is fixedly connected to the bottom of the movable plate, the bottom of the annular plate is provided with an annular groove, an annular slider is placed inside the annular groove, and the bottom of the annular slider is fixedly connected to the top of the bottom plate; The servo motor is fixed in the mounting seat, and the output shaft of the servo motor is provided with a third gear. The inner wall of the annular plate is provided with second tooth grooves arranged in a circular array, and the second tooth grooves are meshed with the third gear, so that the servo motor drives the annular plate to rotate.

[0015] Further, the cleaning component comprises: The fixed plate is detachably arranged on the top of the mounting seat and is located at the notch on the back of the laser radar. The bottom of the fixed plate is rotatably provided with cleaning rollers symmetrically arranged with the center point of the fixed plate.

[0016] The present invention also provides a method for using a laser distance measuring device for land survey and monitoring. Using the laser distance measuring device for land survey and monitoring, the method comprises the following steps: S1: The laser radar emits a laser beam along the transmitting mirror and receives the reflected laser beam through the receiving mirror to determine the distance of the target and conduct a survey of the land; S2: During the use of the laser radar, the accuracy of the laser radar distance information measurement is determined by the calibration mechanism, and the transmitting mirror and the receiving mirror are cleaned by the cleaning mechanism.

[0017] The present invention provides a laser distance measuring device and method for land survey and monitoring. Compared with the prior art, it has the following beneficial effects: 1. The present invention calibrates the laser radar through a calibration mechanism during intervals of use, so as to facilitate the control of the accuracy of the laser radar ranging, and facilitates the calibration of the laser radar in accordance with the actual measurement situation, thereby improving the calibration effect. The position of the calibration plate is facilitated by a pressure sensor, thereby improving the accuracy of the calibration. The transmitting mirror and the receiving mirror, which are usually arranged in a concave position, are cleaned by a cleaning mechanism, and the cleaning effect is better, thereby preventing dust and the like from affecting the accuracy of the laser radar ranging.

[0018] 2. The present invention facilitates the determination of the position information of the first plate and the calibration plate through the monitoring of the first spring and the pressure sensor, facilitates the grasping of the position of the calibration plate, avoids the calibration plate from being offset or loosened during the calibration process, improves the calibration accuracy, and facilitates the subsequent cleaning of the calibration plate through the cleaning component, avoids the accumulation of impurities in the corrugated groove and affects the calibration accuracy, and facilitates long-term calibration use; By threading the threaded rod and the second plate body, the compression amount of the first spring can be adjusted to avoid poor elastic support of the first spring due to metal fatigue, thereby facilitating long-term use.

[0019] 3. The present invention arranges a waveform groove to facilitate the grasp of the distance information obtained by the continuous measurement of the laser radar, which is in line with the actual land survey situation. The calibration mechanism is driven to move by the second driving component, which facilitates the calibration of the laser radar and facilitates the stay away from the laser radar after calibration to avoid affecting the actual use of the laser radar.

[0020] 4. The present invention uses the first driving component of the cleaning mechanism to make the first cleaning cotton plate approach the transmitting mirror and the receiving mirror to clean the transmitting mirror and the receiving mirror to avoid a large amount of impurities from accumulating at the transmitting mirror and the receiving mirror, thereby avoiding affecting the accuracy of the laser radar ranging. The rotating component and the blowing component are linked to improve the cleaning effect. The first driving component cooperates with the cleaning component to facilitate the cleaning of the first cleaning cotton plate and the second cleaning cotton.

[0021] 5. The present invention uses a rotating component to rotate the first cleaning cotton plate when it is close to the transmitting mirror and the receiving mirror. Compared with the traditional cleaning effect of rotating the first cleaning cotton plate by a torsion spring or the like, the cleaning effect is better. After the first cleaning cotton plate has cleaned the transmitting mirror and the receiving mirror, the blowing component is used to blow air on the transmitting mirror and the receiving mirror, thereby further improving the cleaning effect, thereby facilitating the cleaning of the transmitting mirror and the receiving mirror located in the recessed part, thereby avoiding affecting the use of the laser radar ranging. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The overall structure diagram of the laser distance measuring device suitable for land survey and monitoring of the present invention is shown; Figure 2It is a schematic diagram of the structure of the laser radar, mounting base and cleaning assembly of the present invention; Figure 3 It is a schematic diagram of the cross-sectional structure of the installation shell of the present invention; Figure 4 It is a cross-sectional view of the mounting seat, the annular groove and the mounting groove structure schematic diagram of the present invention; Figure 5 is a schematic structural diagram of a second driving assembly of the present invention; Figure 6 It is a schematic diagram of the structure of the movable plate, the cleaning mechanism and the calibration mechanism of the present invention; Figure 7 It is a schematic diagram of the cross-sectional structure of the movable plate of the present invention; Figure 8 It is a schematic diagram of the cleaning mechanism structure of the present invention; Fig. 9 It is a schematic diagram of the structure of the first rotating member, the connecting shell and the second electromagnet of the present invention; Fig.10 It is a schematic diagram of the cross-sectional structure of the connection shell of the present invention; Fig.11 It is a schematic diagram of the rotating assembly and the connecting shell structure of the present invention; Fig.12 It is a schematic cross-sectional structural diagram of the air blowing assembly and the first cleaning cotton plate of the present invention; Fig.13 It is a schematic diagram of the cross-sectional structure of the limit assembly and the connection shell of the present invention; Fig.14 It is a schematic diagram of the calibration mechanism structure of the present invention; Fig.15 It is a schematic diagram of the cross-sectional structure of the installation tube of the present invention; Fig.16 It is a schematic diagram of the structure of the cleaning component of the present invention; Fig.17 It is a schematic diagram of the structure of the cover plate, the mounting seat and the connecting piece of the present invention.

[0023] Reference numerals in the above drawings: 1, mounting seat; 2, cover plate; 3, connecting member; 4, second driving assembly; 5, moving plate; 6, cleaning mechanism; 7, annular groove; 8, laser radar; 81, transmitting mirror; 82, receiving mirror; 9, mounting groove; 10, cleaning assembly; 11, calibration mechanism; 12, notch; 41. bottom plate; 42. servo motor; 43. annular plate; 44. annular slide groove; 45. third gear; 46. second tooth groove; 61. Mounting shell; 62. Rotating assembly; 63. First cleaning cotton plate; 64. Position limiting assembly; 65. First driving assembly; 66. Blowing assembly; 621, second rod body; 622, second gear; 623, tooth plate; 624, first gear; 625, first tooth groove; 626, transmission mechanism; 641, guide rod; 642, baffle; 643, second rotating member; 651, first electromagnet; 652, second electromagnet; 653, connecting shell; 654, first rotating member; 661, telescopic tube; 662, air guide groove; 663, second cleaning cotton plate; 664, guide tube; 665, limiting ring; 101. cleaning roller; 102. fixing plate; 111. Mounting tube; 112. Second plate body; 113. Mounting plate; 114. Pressure sensor; 115. First plate body; 116. Corrugated groove; 117. Calibration plate; 118. First rod body; 110. Retaining ring; 119. Threaded rod. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Example 1: Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 and Fig.17 A laser ranging device for land survey and monitoring includes a connecting member 3, through which a laser radar 8 is easily installed at a specified position, so as to facilitate the movement of the laser radar 8, so as to facilitate land survey, and also includes the laser radar 8, a moving plate 5 and a calibration mechanism 11 arranged on the side wall of the moving plate 5 for calibrating the laser radar 8, a transmitting mirror 81 and a receiving mirror 82 are arranged on the front of the laser radar 8, and a cleaning mechanism 6 arranged at intervals for cleaning the transmitting mirror 81 and the receiving mirror 82 is arranged on the side wall of the moving plate 5; See also Figure 6 , Figure 7 , Fig.14 and Fig.15 , the calibration mechanism 11 comprises: The mounting tube 111 is fixedly sleeved on the side wall of the movable plate 5, and the inner wall of the mounting tube 111 is sleeved with a first plate body 115. A calibration plate 117 is fixedly mounted on the side of the first plate body 115 close to the laser radar 8. A corrugated groove 116 is provided on the side of the calibration plate 117 close to the laser radar 8, so as to judge the accuracy of the laser radar 8 distance measurement by the distance between the calibration plate 117 and the laser radar 8; The second plate body 112 is fixedly mounted on the inner wall of the mounting tube 111, and a threaded rod 119 is threadedly connected to the center of the side wall of the second plate body 112. The threaded rod 119 is located between the first plate body 115 and the second plate body 112, and a mounting plate 113 is rotatably mounted on the side wall. A pressure sensor 114 is fixedly mounted on the side of the mounting plate 113 close to the first plate body 115.

[0026] The calibration mechanism 11 also includes: The first rod 118 is fixedly arranged on a side of the first plate 115 close to the second plate 112, and the side wall of the first rod 118 is sleeved on the center of the side wall of the mounting plate 113 and the threaded rod 119, so that the end of the first rod 118 away from the first plate 115 extends to the side of the second plate 112 away from the first plate 115, and the end of the first rod 118 away from the first plate 115 is fixedly sleeved with a retaining ring 110, and the retaining ring 110 cooperates with the threaded rod 119 to stop the first rod 118 from being separated from the threaded rod 119. The center of the side wall of the mounting plate 113 and the threaded rod 119 is provided with a first through hole for sleeved with the first rod 118. The pressure sensor 114 adopts an annular pressure sensor 114, and the inner wall of the pressure sensor 114 is sleeved on the outer side of the first rod 118. The side wall of the first rod 118 and located between the pressure sensor 114 and the first plate 115 are sleeved with a first spring.

[0027] In specific implementation, when the laser radar 8 needs to be calibrated, the second driving assembly 4 drives the moving plate 5 to move to the notch 12 on the front of the laser radar 8. At this time, the laser radar 8 emits a laser beam and emits it along the transmitting mirror 81. The emitted laser beam is blocked by the calibration plate 117 and then reflected. The reflected laser beam is received by the receiving mirror 82, so as to judge the distance of the laser radar 8 from the calibration, and judge the accuracy of the laser radar 8 from the distance information of the preset calibration plate 117 to the laser radar 8. By providing the waveform groove 116, it is easy to grasp the distance information obtained by the continuous measurement of the laser radar 8, which is in line with the actual land survey situation; By providing a first spring to elastically support the first plate 115 and the calibration plate 117, the position information of the first plate 115 and the calibration plate 117 can be determined by the pressure information monitored by the pressure sensor 114, so that the position of the calibration plate 117 can be grasped, and the calibration plate 117 can be prevented from being offset or loosened during the calibration process, thereby improving the accuracy of the calibration. The calibration plate 117 can be elastically supported, so that it is convenient to clean the calibration plate 117 through the cleaning component 10 later, so as to prevent impurities from accumulating in the corrugated groove 116 and affecting the accuracy of the calibration, and it is convenient for long-term calibration use. By threading the threaded rod 119 and the second plate body 112, and rotatably connecting the mounting plate 113 and the threaded rod 119, the positions of the mounting plate 113 and the pressure sensor 114 can be adjusted, thereby facilitating the adjustment of the compression amount of the first spring, and avoiding the poor elastic support of the first spring due to metal fatigue, etc., so as to facilitate long-term use; By moving the first rod body 118 along the first through hole, the movement of the first plate body 115 and the calibration plate 117 is limited, thereby improving the stability of the movement of the calibration plate 117 without affecting the use of the threaded rod 119 and the like.

[0028] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 A mounting seat 1 is fixedly provided on the top of the connecting member 3, a mounting groove 9 is provided on the top of the mounting seat 1, a laser radar 8 is disassembled and arranged in the mounting groove 9, and a cover plate 2 is disassembled and arranged on the top of the mounting seat 1; The side wall of the mounting seat 1 and the front and back sides of the laser radar 8 are provided with notches 12 connected to the mounting groove 9, so that the laser radar 8 can measure the land along the notch 12 on the front side of the laser radar 8. A cleaning component 10 is provided at the notch 12 on the back side of the laser radar 8. An annular groove 7 connected to the mounting groove 9 and the notch 12 is provided inside the mounting seat 1 and outside the laser radar 8. The movable plate 5 is arranged in the annular groove 7, and the movable plate 5 is designed in an arc shape. A second driving component 4 for driving the movable plate 5 to move along the annular groove 7 is provided inside the annular groove 7. The second driving component 4 includes: The bottom plate 41 is fixedly arranged on the bottom inner wall of the annular groove 7. The top of the bottom plate 41 is slidably provided with an annular plate 43. The top of the annular plate 43 is fixedly connected to the bottom of the movable plate 5. The bottom of the annular plate 43 is provided with an annular groove 44. An annular slider is placed inside the annular groove 44. The bottom of the annular slider is fixedly connected to the top of the bottom plate 41. The servo motor 42 is fixed in the mounting base 1. The output shaft of the servo motor 42 is provided with a third gear 45. The inner wall of the annular plate 43 is provided with second tooth grooves 46 arranged in a circular array, and the second tooth grooves 46 are meshed with the third gear 45, so that the servo motor 42 drives the annular plate 43 to rotate.

[0029] The output shaft of the servo motor 42 is fixedly provided with a second rotating shaft through a coupling, and the side wall of the second rotating shaft is fixedly connected to the inner wall of the third gear 45, so that the servo motor 42 drives the third gear 45 to rotate; During the specific implementation, the servo motor 42 is started, and the output shaft of the servo motor 42 drives the second rotating shaft to rotate through the coupling, and the second rotating shaft drives the third gear 45 to rotate. Since the third gear 45 is engaged with the second tooth groove 46 arranged in a ring array, the annular plate 43 is driven to rotate under the limit of the annular slide groove 44 and the annular slider, so as to drive the movable plate 5 to rotate, thereby driving the cleaning mechanism 6 and the calibration structure to rotate, so as to adjust the position of the cleaning mechanism 6 and the calibration mechanism 11, so as to facilitate the cleaning mechanism 6 and the calibration mechanism 11 to clean and calibrate the laser radar 8, and to stay away from the receiving mirror 82 and the transmitting mirror 81 after cleaning and calibration are completed, so as to avoid affecting the actual use of the laser radar 8.

[0030] Example 2: Please refer to Figure 7 , Figure 8 , Fig. 9 and Fig.10 The difference between this embodiment and the first embodiment is that the cleaning mechanism 6 includes: The mounting shell 61 is fixedly sleeved on the side wall of the movable plate 5. A first cleaning cotton plate 63 is movably arranged on one side of the mounting shell 61 close to the laser radar 8. A first driving assembly 65 for driving the first cleaning cotton plate 63 to move is arranged inside the mounting shell 61. A rotating assembly 62 is arranged inside the first driving assembly 65 in linkage with the first driving assembly 65 and for driving the first cleaning cotton plate 63 to rotate. The first driving assembly 65 includes: The first electromagnet 651 is fixedly mounted on the inner wall of the mounting shell 61 away from the laser radar 8. The inner wall of the mounting shell 61 is sleeved with a second electromagnet 652. Both the first electromagnet 651 and the second electromagnet 652 are designed in an annular shape.

[0031] The first drive assembly 65 further includes: The first rotating member 654 is fixedly arranged on the side of the second electromagnet 652 away from the first electromagnet 651, and the inner wall of the first rotating member 654 is rotatably provided with a connecting shell 653 extending to the outside of the mounting shell 61, and the connecting shell 653 is fixedly connected to the first cleaning cotton plate 63 at one end outside the mounting shell 61 to drive the first cleaning cotton plate 63 to move through the first electromagnet 651 and the second electromagnet 652, and the side wall of the mounting shell 61 is provided with a second through hole for sleeve-mounting the connecting shell 653, and the outer wall of one end of the connecting shell 653 located in the mounting shell 61 and located on the side of the second electromagnet 652 away from the first electromagnet 651 is sleeved with a second spring, and the side of the connecting shell 653 close to the first electromagnet 651 is designed to be open.

[0032] In a specific implementation, when the movable plate 5 and the cleaning mechanism 6 move to the front of the transmitting mirror 81 and the receiving mirror 82, the first electromagnet 651 and the second electromagnet 652 are energized, and the side where the first electromagnet 651 and the second electromagnet 652 are close to each other is the same pole, so that the repulsive force generated pushes the second electromagnet 652 to squeeze the second spring to move, thereby pushing the connecting shell 653 and the first cleaning cotton plate 63 to approach the transmitting mirror 81 and the receiving mirror 82, so as to clean the transmitting mirror 81 and the receiving mirror 82, avoid a large amount of impurities from accumulating at the transmitting mirror 81 and the receiving mirror 82, thereby avoiding affecting the accuracy of the laser radar 8 ranging; When cleaning is completed, the first electromagnet 651 and the second electromagnet 652 are powered off. Under the action of the second spring, the second electromagnet 652 approaches the first electromagnet 651, thereby making the first cleaning cotton plate 63 away from the transmitting mirror 81 and the receiving mirror 82, so that the cleaning mechanism 6 can rotate along the annular groove 7 to avoid affecting the use of the laser radar 8. The side where the first electromagnet 651 and the second electromagnet 652 are close to each other can be made into opposite magnetic poles, so that the second electromagnet 652 can be driven to approach the first electromagnet 651 through suction, thereby making the first cleaning cotton plate 63 away from the transmitting mirror 81 and the receiving mirror 82. The magnetic poles of the electromagnet can be adjusted by changing the direction of the current. This is a prior art and will not be elaborated here.

[0033] See also Fig.10 and Fig.11 , the rotating assembly 62 includes: The second rod 621 is fixedly arranged on the inner wall of the mounting shell 61 close to the first electromagnet 651, and is sleeved on the inner wall of the first electromagnet 651. One end of the second rod 621 away from the first electromagnet 651 extends into the connecting shell 653. One end of the second rod 621 located in the connecting shell 653 is provided with a blowing assembly 66 for blowing air to the transmitting mirror 81 and the receiving mirror 82. The side wall of the second rod 621 is provided with a limit assembly 64. The toothed plate 623 is fixedly disposed on the top of the second rod body 621 and embedded in the second rod body 621. The top of the toothed plate 623 is meshed with a first gear 624. The inner wall of the first gear 624 is fixedly provided with a first rotating shaft. A transmission mechanism 626 is disposed at the end of the first rotating shaft, so that the first rotating shaft is connected to the second gear 622 through the transmission mechanism 626, so that the transmission directions of the first gear 624 and the second gear 622 are vertically disposed. The first tooth grooves 625 are formed in an annular array on the inner wall of the connecting shell 653 and mesh with the second gear 622 .

[0034] In specific implementation, when the second electromagnet 652 drives the connecting shell 653 away from the first electromagnet 651 through repulsion, the connecting shell 653 moves horizontally relative to the second rod body 621. At this time, under the action of the limit assembly 64 and because the first gear 624 and the tooth plate 623 are engaged, the first gear 624 is driven to rotate during the movement of the connecting shell 653. The first gear 624 drives the second gear 622 to rotate through the transmission mechanism 626. Since the second electromagnet 652 and the connecting shell 653 are rotationally connected, the first connecting shell 653 is driven to rotate through the first tooth groove 625, so that the first cleaning cotton plate 63 rotates when it is close to the transmitting mirror 81 and the receiving mirror 82, so that the first cleaning cotton plate 63 rotates to clean the transmitting mirror 81 and the receiving mirror 82. Compared with the traditional method of rotating the first cleaning cotton plate 63 by means of a torsion spring or the like, the effect of cleaning is better; The inner wall of the second gear 622 is fixedly sleeved with a third shaft rotatably connected to the baffle 642. The transmission mechanism 626 includes bevel gears fixedly arranged on the third shaft and the end of the first shaft and meshing with each other, so that when the first gear 624 rotates, the second gear 622 is driven to rotate and the direction of rotation of the second gear 622 is changed, which is convenient for actual transmission use. By linking the rotating assembly 62 with the first driving assembly 65, the first cleaning cotton plate 63 can be rotated when moving, thereby improving the cleaning effect of the transmitting mirror 81 and the receiving mirror 82 and facilitating actual operation.

[0035] See also Fig.12 , the blowing assembly 66 comprises: The air guide groove 662 is opened on the side of the first cleaning cotton plate 63 close to the laser radar 8, and the second cleaning cotton plate 663 is fixedly provided on the inner wall of the air guide groove 662. The first cleaning cotton plate 63 and the second cleaning cotton plate 663 are vertically aligned on the side close to the laser radar 8, and the side wall of the second cleaning cotton plate 663 is provided with air guide holes arranged in a circular array; The telescopic tube 661 is fixedly arranged on one end of the second rod body 621 located in the connecting shell 653. The end of the telescopic tube 661 away from the second rod body 621 is fixedly provided with a conduit 664 extending into the air guide groove 662. The side wall of the connecting shell 653 is provided with a fourth through hole for sleeve-mounting the conduit 664. The outer wall of the conduit 664 and the connecting shell 653 and the air guide groove 662 are fixedly sleeved with a limiting ring 665 to limit the conduit 664.

[0036] In a specific implementation, when the connecting shell 653 is close to the first cleaning cotton plate 63, the connecting shell 653 drives the conduit 664 to move through the limiting ring 665, thereby stretching the telescopic tube 661 to expand the telescopic tube 661. In this process, external gas enters the telescopic tube 661 through the air guide hole, the air guide groove 662 and the conduit 664, so that the interior of the telescopic tube 661 is filled with gas. When the first cleaning cotton plate 63 is away from the transmitting mirror 81 after cleaning the transmitting mirror 81 and the receiving mirror 82, the connecting shell 653 drives the conduit 664 to move under the action of the limiting ring 665 and. The telescopic tube 661 is squeezed so that the gas in the telescopic tube 661 is blown out along the conduit 664, the air guide groove 662 and the air guide hole, so that the transmitting mirror 81 and the receiving mirror 82 are blown after the first cleaning cotton plate 63 has finished cleaning the transmitting mirror 81 and the receiving mirror 82, thereby further improving the cleaning effect. Since the receiving mirror 82 and the transmitting mirror 81 are usually arranged in a concave position, the cleaning effect of the transmitting mirror 81 and the receiving mirror 82 is improved by rotating and blowing, and the blowing component 66 and the rotating component 62 are both arranged in linkage with the first driving component 65, which is convenient for actual operation; The air guide holes are provided on the second cleaning cotton plate 663 to facilitate air intake and cleaning of the transmitting mirror 81 and the receiving mirror 82. The limiting ring 665 is used to limit the conduit 664 so that when the first cleaning cotton plate 63 rotates, the conduit 664 does not rotate and the conduit 664 is prevented from being separated from the connecting shell 653 and the first cleaning cotton plate 63. The telescopic tube 661 can be made of elastic rubber material, which is convenient for practical use.

[0037] See also Fig.13 , the limiting assembly 64 includes: The second rotating member 643 is fixedly arranged on the outer wall of one end of the connecting shell 653 close to the first electromagnet 651, and a baffle 642 is rotatably arranged on the inner wall of the second rotating member 643, so that the baffle 642 is rotatably connected to the connecting shell 653, and the side of the baffle 642 close to the connecting shell 653 is rotatably connected to the first gear 624 and the second gear 622; The guide rod 641 is fixedly arranged on the inner wall of one side of the mounting shell 61 close to the first electromagnet 651. The guide rod 641 is located on the inner side of the first electromagnet 651 and on both sides of the second rod body 621. One end of the guide rod 641 away from the first electromagnet 651 passes through the baffle 642 and extends into the connecting shell 653 to limit the baffle 642. The side wall of the baffle 642 is provided with a third through hole for sleeve mounting the guide rod 641.

[0038] In a specific implementation, the baffle 642 is rotatably connected to the connecting shell 653 through the second rotating member 643, so as to limit the first gear 624 and the second gear 622, thereby preventing the rotation of the connecting shell 653 from affecting the stable use of the first gear 624 and the second gear 622, and limiting the movement of the baffle 642 through the guide rod 641, thereby further improving the stability of the baffle 642, and does not affect the movement of the baffle 642 with the connecting shell 653.

[0039] See also Fig.16 , the cleaning assembly 10 comprises: The fixing plate 102 is detachably mounted on the top of the mounting base 1 and is located at the notch 12 on the back of the laser radar 8 . A cleaning roller 101 symmetrically arranged about the center point of the fixing plate 102 is rotatably mounted on the bottom of the fixing plate 102 .

[0040] In a specific implementation, when the second driving assembly 4 drives the moving plate 5, the cleaning mechanism 6 and the calibration mechanism 11 to move to the back of the laser radar 8, the calibration plate 117, the first cleaning cotton plate 63 and the second cleaning cotton plate 663 contact the cleaning roller 101, thereby cleaning it; When cleaning the calibration plate 117, under the action of the first spring, the calibration plate 117 has a certain movement space after being squeezed by the cleaning roller 101, so that the corrugated groove 116 is in full contact with the cleaning roller 101, so as to improve the cleaning effect of the calibration plate 117, thereby avoiding the accumulation of dust and the like in the corrugated groove 116, which affects the accuracy of calibration; When cleaning the first cleaning cotton plate 63 and the second cleaning cotton plate 663, the positions of the first cleaning cotton plate 63 and the second cleaning cotton plate 663 are adjusted by the first driving assembly 65 so as to contact with the cleaning roller 101, thereby facilitating the cleaning of the first cleaning cotton plate 63 and the second cleaning cotton plate 663, and facilitating the cleaning of the transmitting mirror 81 and the receiving mirror 82 after long-term use; By arranging the cleaning component 10 on the back of the laser radar 8, it is avoided that the cleaned dust is attached to the transmitting mirror 81 and the receiving mirror 82 again when cleaning the cleaning mechanism 6 and the calibration mechanism 11, thereby improving the cleaning effect.

[0041] The embodiment of the present invention also provides a method for using a laser distance measuring device for land survey and monitoring, using a laser distance measuring device for land survey and monitoring, the method comprising the following steps: S1: The laser radar 8 emits a laser beam along the transmitting mirror 81 and receives the reflected laser beam through the receiving mirror 82, thereby determining the distance of the target to survey the land; S2: During the use of the laser radar 8, the accuracy of the distance information measurement of the laser radar 8 is determined by the calibration mechanism 11 to determine the accuracy of the land survey, and the transmitting mirror 81 and the receiving mirror 82 are cleaned by the cleaning mechanism 6 to prevent impurities from being attached to the transmitting mirror 81 and the receiving mirror 82, thereby affecting the accuracy of the distance measurement of the laser radar 8. The cleaning mechanism 6 and the calibration mechanism 11 are driven by the second driving component 4 to move to the front of the laser radar 8, so as to facilitate the calibration of the laser radar 8 and the cleaning of the transmitting mirror 81 and the receiving mirror 82; The order in which the cleaning mechanism 6 and the calibration mechanism 11 move to the front of the laser radar 8 is adjusted by the second driving component 4. When the calibration mechanism 11 moves to the front of the laser radar 8 first, the laser radar 8 is calibrated by the calibration mechanism 11 first. After the calibration is completed, the transmitting mirror 81 and the receiving mirror 82 are cleaned by the cleaning mechanism 6. Then, the laser radar 8 is calibrated by the calibration mechanism 11 again, so as to grasp whether there is a ranging error before and after the cleaning of the receiving mirror 82, which is convenient for the actual investigation of land use. When the cleaning mechanism 6 moves to the front of the laser radar 8 first, the cleaning mechanism 6 cleans the transmitting mirror 81 and the receiving mirror 82 first, which is convenient for the subsequent calibration mechanism 11 to calibrate the laser radar 8, thereby improving the accuracy of the calibration and facilitating the actual ranging use.

[0042] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A laser distance measuring device for land survey and monitoring, comprising a connecting piece, characterized in that: It also includes a laser radar, a movable plate, and a calibration mechanism disposed on the side wall of the movable plate for calibrating the laser radar. A transmitting mirror and a receiving mirror are disposed on the front of the laser radar. A cleaning mechanism for cleaning the transmitting mirror and the receiving mirror and arranged at intervals is disposed on the side wall of the movable plate. The calibration mechanism includes: The mounting tube is fixedly sleeved on the side wall of the movable plate, the inner wall of the mounting tube is sleeved with a first plate body, a calibration plate is fixedly provided on a side of the first plate body close to the laser radar, and a corrugated groove is provided on a side of the calibration plate close to the laser radar, so as to judge the accuracy of the laser radar ranging through the distance between the calibration plate and the laser radar; The second plate body is fixedly sleeved on the inner wall of the mounting tube, a threaded rod is threadedly connected at the center of the side wall of the second plate body, a mounting plate is rotatably provided on one end of the side wall of the threaded rod located between the first plate body and the second plate body, and a pressure sensor is fixedly provided on the side of the mounting plate close to the first plate body.

2. The laser distance measuring device for land survey and monitoring according to claim 1 is characterized in that: The calibration mechanism also includes: The first rod body is fixedly arranged on a side of the first plate body close to the second plate body, and the side wall of the first rod body is sleeved at the center of the side wall of the mounting plate and the threaded rod, so that the end of the first rod body away from the first plate body extends to the side of the second plate body away from the first plate body, and the end of the first rod body away from the first plate body is fixedly sleeved with a retaining ring, and the retaining ring cooperates with the threaded rod stopper to limit the first rod body from being separated from the threaded rod, and the center of the side wall of the mounting plate and the threaded rod is provided with a first through hole for sleeved with the first rod body, the pressure sensor adopts an annular pressure sensor, and the inner wall of the pressure sensor is sleeved on the outer side of the first rod body, and the side wall of the first rod body and located between the pressure sensor and the first plate body are sleeved with a first spring.

3. The laser distance measuring device for land survey and monitoring according to claim 1 is characterized in that: The cleaning mechanism comprises: The mounting shell is fixedly sleeved on the side wall of the movable plate, and a first cleaning cotton plate is movably arranged on a side of the mounting shell close to the laser radar, and a first driving assembly for driving the first cleaning cotton plate to move is arranged inside the mounting shell, and a rotating assembly is arranged inside the first driving assembly, which is linked with the first driving assembly and is used to drive the first cleaning cotton plate to rotate, and the first driving assembly includes: The first electromagnet is fixedly arranged on the inner wall of the mounting shell away from the laser radar, and the inner wall of the mounting shell is sleeved with the second electromagnet. The first electromagnet and the second electromagnet are both designed in an annular shape.

4. The laser distance measuring device for land survey and monitoring according to claim 3 is characterized in that: The first drive assembly also includes: The first rotating member is fixedly arranged on a side of the second electromagnet away from the first electromagnet, and a connecting shell extending to the outside of the mounting shell is rotatably provided on the inner wall of the first rotating member, and one end of the connecting shell located outside the mounting shell is fixedly connected to the first cleaning cotton plate to drive the first cleaning cotton plate to move through the first electromagnet and the second electromagnet, and a second through hole for sleeve-mounting the connecting shell is provided on the side wall of the mounting shell, and a second spring is sleeved on the outer wall of one end of the connecting shell located in the mounting shell and on the side of the second electromagnet away from the first electromagnet, and the side of the connecting shell close to the first electromagnet is designed to be open.

5. The laser distance measuring device for land survey and monitoring according to claim 4, characterized in that: The rotating assembly comprises: The second rod body is fixedly arranged on the inner wall of one side of the mounting shell close to the first electromagnet and sleeved on the inner wall of the first electromagnet. One end of the second rod body away from the first electromagnet extends into the connecting shell. One end of the second rod body located in the connecting shell is provided with a blowing assembly for blowing air to the transmitting mirror and the receiving mirror. A side wall of the second rod body is provided with a limit assembly. A toothed plate is fixedly arranged on the top of the second rod body and embedded in the second rod body, a first gear is meshed on the top of the toothed plate, a first rotating shaft is fixedly arranged on the inner wall of the first gear, and a transmission mechanism is arranged at the end of the first rotating shaft, so that the first rotating shaft is connected to the second gear through the transmission mechanism, so that the transmission directions of the first gear and the second gear are arranged vertically; The first tooth grooves are arranged in an annular array on the inner side wall of the connecting shell and mesh with the second gear.

6. The laser distance measuring device for land survey and monitoring according to claim 5, characterized in that: The limiting component comprises: A second rotating member is fixedly arranged on an outer wall of an end of the connecting shell close to the first electromagnet, and a baffle is rotatably arranged on the inner wall of the second rotating member so that the baffle is rotatably connected to the connecting shell, and a side of the baffle close to the connecting shell is rotatably connected to the first gear and the second gear; The guide rod is fixedly arranged on the inner wall of the mounting shell close to the first electromagnet. The guide rod is located on the inner side of the first electromagnet and on both sides of the second rod body. The end of the guide rod away from the first electromagnet passes through the baffle and extends into the connecting shell to limit the baffle. The side wall of the baffle is provided with a third through hole for sleeve-mounting the guide rod.

7. The laser distance measuring device for land survey and monitoring according to claim 5, characterized in that: The blowing assembly comprises: An air guide groove is provided on a side of the first cleaning cotton plate close to the laser radar, and a second cleaning cotton plate is fixedly provided on the inner wall of the air guide groove, the first cleaning cotton plate and the second cleaning cotton plate are vertically aligned on a side close to the laser radar, and a side wall of the second cleaning cotton plate is provided with air guide holes arranged in a circular array; The telescopic tube is fixedly arranged at one end of the second rod body located in the connecting shell, and a conduit extending into the air guide groove is fixedly arranged at one end of the telescopic tube away from the second rod body. A fourth through hole for sleeve-mounting the conduit is opened on the side wall of the connecting shell, and a limiting ring is fixedly sleeved on the outer wall of the conduit and located in the connecting shell and the air guide groove to limit the conduit.

8. The laser distance measuring device for land survey and monitoring according to claim 1, characterized in that: A mounting seat is fixedly provided on the top of the connecting member, a mounting groove is provided on the top of the mounting seat, the laser radar is disassembled and arranged in the mounting groove, and a cover plate is disassembled and arranged on the top of the mounting seat; The side wall of the mounting seat and the front and back sides of the laser radar are provided with notches connected to the mounting groove, so that the laser radar can measure the land along the notch on the front side of the laser radar. A cleaning component is provided at the notch on the back side of the laser radar. An annular groove connected to the mounting groove and the notch is provided inside the mounting seat and outside the laser radar. The movable plate is arranged in the annular groove, and the movable plate is designed in an arc shape. A second driving component for driving the movable plate to move along the annular groove is provided inside the annular groove. The second driving component includes: The bottom plate is fixedly arranged on the bottom inner wall of the annular groove, the top of the bottom plate is slidably provided with an annular plate, the top of the annular plate is fixedly connected to the bottom of the movable plate, the bottom of the annular plate is provided with an annular groove, an annular slider is placed inside the annular groove, and the bottom of the annular slider is fixedly connected to the top of the bottom plate; The servo motor is fixed in the mounting seat, and the output shaft of the servo motor is provided with a third gear. The inner wall of the annular plate is provided with second tooth grooves arranged in a circular array, and the second tooth grooves are meshed with the third gear, so that the servo motor drives the annular plate to rotate.

9. The laser distance measuring device for land survey and monitoring according to claim 8, characterized in that: The cleaning component comprises: The fixed plate is detachably arranged on the top of the mounting seat and is located at the notch on the back of the laser radar. The bottom of the fixed plate is rotatably provided with cleaning rollers symmetrically arranged with the center point of the fixed plate.

10. A method for using a laser distance measuring device for land survey and monitoring, characterized in that: Using a laser ranging device for land survey and monitoring as described in any one of claims 1 to 9, the method comprises the following steps: S1: The laser radar emits a laser beam along the transmitting mirror and receives the reflected laser beam through the receiving mirror to determine the distance of the target and conduct a survey of the land; S2: During the use of the laser radar, the accuracy of the laser radar distance information measurement is determined by the calibration mechanism, and the transmitting mirror and the receiving mirror are cleaned by the cleaning mechanism.

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