An automatic calibration compensation laser range finder

Abstract

The utility model relates to a laser range finder, concretely is a kind of automatic calibration compensation's laser range finder, including base;Still include the laser range finder body being set on base;Laser range finder body is fixedly installed with calibration compensation module;Still include lifting assembly, set on base, including multiple groups with the rotation link of laser range finder body rotation connection, and multiple groups rotation link parallel arrangement;Rotation link is used to drive laser range finder body to ascend or descend;Position compensation component, position compensation component is used to drive laser range finder body to approach or away from the object to be measured when laser range finder body ascends or descends. In the ranging process, through the intercoordination of lifting assembly and position compensation component, the distance in certain height range between the object to be measured and ranging point can be measured, and the average value of measurement is output by laser range finder body, so that the measurement error caused by the concave-convex surface of the object to be measured can be effectively reduced, to improve the accuracy of measurement result.

Description

Technical Field

[0001] This utility model relates to a laser rangefinder, specifically an automatic calibration and compensation laser rangefinder. Background Technology

[0002] A laser rangefinder is an electronic device that uses laser technology to accurately measure the distance between an object and the instrument. It emits a laser beam and receives the laser signal reflected from the target, combining optical, electronic, and signal processing technologies to quickly calculate the distance. Due to its high precision, non-contact operation, and high efficiency, it is widely used in surveying, engineering, industrial inspection, and scientific research. Types include handheld rangefinders and fixed rangefinders.

[0003] Handheld rangefinders, as the name suggests, are used by holding the rangefinder by hand. They are subject to some error due to shaking during use. Fixed rangefinders, on the other hand, consist of a stand and a rangefinder. The stand supports the rangefinder, allowing for stable distance measurement.

[0004] In practical use, not all measurement surfaces of the objects being measured are smooth, especially in engineering fields, such as walls and panels. The measurement surfaces of these objects are usually uneven, which causes reflection and scattering when the laser shines on the measurement surface, thus affecting the measurement accuracy. Since the height of the support is fixed when the common fixed rangefinder is used for measurement, the measurement results are not accurate when the laser shines on the uneven surface. Utility Model Content

[0005] The purpose of this invention is to provide an automatically calibrated and compensated laser rangefinder to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An automatically calibrated and compensated laser rangefinder, including a base;

[0008] It also includes a laser rangefinder body mounted on the base; a calibration compensation module is fixedly installed on the laser rangefinder body.

[0009] It also includes a lifting assembly, which is mounted on the base and includes multiple sets of rotating rods that are rotatably connected to the laser rangefinder body, and the multiple sets of rotating rods are arranged in parallel; the rotating rods are used to drive the laser rangefinder body to rise or fall.

[0010] A position compensation component is provided to move the laser rangefinder body closer to or further away from the object being measured when the laser rangefinder body rises or falls.

[0011] The laser rangefinder with automatic calibration and compensation as described above: multiple sets of guide rails are fixedly installed on the base; a sliding plate is provided on the base; the sliding plate is rotatably connected to the rotating rod; and a guide groove is provided on the sliding plate to slide and connect with the guide rails.

[0012] The laser rangefinder with automatic calibration and compensation as described above: the lifting assembly further includes a slide groove formed on the slide plate; a slider is slidably fitted on the slide groove; and a hinge rod rotatably mounted on the slider and rotatably connected to a set of the rotating rods.

[0013] As described above, the automatic calibration and compensation laser rangefinder includes a lifting assembly that further comprises a motor fixedly mounted on the slide plate; a rotating shaft fixedly mounted on the output end of the motor; a first threaded groove on the rotating shaft; a threaded block threadedly connected to the first threaded groove on the rotating shaft; and a connecting rod that fixes the threaded block to the slider.

[0014] The laser rangefinder with automatic calibration and compensation as described above: the position compensation component includes a threaded sleeve fixedly mounted on the base; the rotating shaft has a second threaded groove that is threadedly connected to the threaded sleeve.

[0015] As described above, the automatic calibration and compensation laser rangefinder has the following features: a fixed sleeve is fixedly installed at the bottom of the base; a pin is slidably installed inside the fixed sleeve; a spring is installed inside the fixed sleeve; and the two ends of the spring respectively abut against the pin and the base.

[0016] The laser rangefinder with automatic calibration and compensation as described above: multiple sets of brackets are fixedly installed on the bottom of the base.

[0017] Compared with the prior art, the beneficial effects of this utility model are: during the distance measurement process, through the cooperation of the lifting component and the position compensation component, the distance between the object to be measured and the distance measurement point can be measured within a certain height range, and the average value of the measurement is output by the laser rangefinder body, which can effectively reduce the measurement error caused by the unevenness of the surface of the object to be measured, thereby improving the accuracy of the measurement results. Attached Figure Description

[0018] Figure 1 A schematic diagram of a laser rangefinder with automatic calibration and compensation.

[0019] Figure 2 A schematic diagram of the base in a laser rangefinder for automatic calibration and compensation.

[0020] Figure 3 A schematic diagram of the pin structure in a laser rangefinder for automatic calibration and compensation.

[0021] Figure 4A schematic diagram of the threaded sleeve in a laser rangefinder for automatic calibration and compensation.

[0022] In the diagram: 1. Base; 101. Guide rail;

[0023] 2. Slide plate; 201. Guide groove; 202. Slide groove;

[0024] 3. Motor;

[0025] 4. Shaft; 401. First threaded groove; 402. Second threaded groove;

[0026] 5. Threaded block;

[0027] 6. Connecting rod;

[0028] 7. Slider;

[0029] 8. Hinge rod;

[0030] 9. Rotating rod;

[0031] 10. Threaded sleeve;

[0032] 11. Fixing sleeve;

[0033] 12. Spring;

[0034] 13. Threshold pin;

[0035] 14. Bracket;

[0036] 15. Laser rangefinder body; 1501. Calibration and compensation module. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0038] Please see Figures 1-4 As an embodiment of the present utility model, the automatically calibrated and compensated laser rangefinder includes a base 1;

[0039] It also includes a laser rangefinder body 15 disposed on the base 1; a calibration compensation module 1501 is fixedly installed on the laser rangefinder body 15.

[0040] It also includes a lifting assembly, which is mounted on the base 1 and includes multiple sets of rotating rods 9 that are rotatably connected to the laser rangefinder body 15, and the multiple sets of rotating rods 9 are arranged in parallel; the rotating rods 9 are used to drive the laser rangefinder body 15 to rise or fall.

[0041] A position compensation component is provided to move the laser rangefinder body 15 closer to or further away from the object being measured when the laser rangefinder body 15 rises or falls.

[0042] In this embodiment, the base 1 is placed on the set distance measuring point, and the light output port of the laser rangefinder body 15 is vertically aligned with the object to be measured. Then, the laser rangefinder body 15 emits a laser towards the object to be measured. After the laser is reflected by the object to be measured, it is reflected back to the light output port. After being analyzed by the analysis system inside the laser rangefinder body 15, the distance between the distance measuring point and the object to be measured can be obtained.

[0043] During distance measurement, the lifting assembly activates, causing the rotating rod 9 to rotate. This rotates the laser rangefinder body 15 away from the base 1, and then back towards the base 1 at the end of its travel. Throughout this process, the laser rangefinder body 15 monitors the distance between the measurement point and the object being measured in real time, and outputs the average value after the measurement is complete. Because multiple rotating rods 9 are arranged in parallel, the laser rangefinder body 15 maintains a perpendicular position to the object being measured as it rises or falls, avoiding errors caused by tilted measurements.

[0044] Meanwhile, the position compensation component will first move the laser rangefinder body 15 closer to the object to be measured, and then move the laser rangefinder body 15 away from the object to be measured, in order to compensate for the positional shift of the laser rangefinder body 15 during the lifting or lowering process of the lifting component, thereby ensuring the accuracy of the ranging result.

[0045] Furthermore, during the ranging process, the calibration compensation module 1501 will dynamically compensate the laser rangefinder body 15 in real time to avoid errors caused by motion and further improve the accuracy of ranging.

[0046] During the distance measurement process, the lifting component and the position compensation component work together to measure the distance between the object to be measured and the measuring point within a certain height range. The average value of the measurement is output by the laser rangefinder body 15, which can effectively reduce the large measurement error caused by the unevenness of the surface of the object to be measured, thereby improving the accuracy of the measurement results.

[0047] As a further embodiment of this utility model, multiple sets of guide rails 101 are fixedly installed on the base 1; a sliding plate 2 is provided on the base 1; the sliding plate 2 is rotatably connected to the rotating rod 9; and a guide groove 201 is provided on the sliding plate 2 to slide and connect with the guide rails 101.

[0048] In this embodiment, when the rotating rod 9 rotates, it will cause the laser rangefinder body 15 to move away from or closer to the sliding plate 2, and its movement trajectory is in the shape of an arc; therefore, the light outlet of the laser rangefinder body 15 will move away from or closer to the object to be measured.

[0049] When the laser rangefinder body 15 moves, the slide plate 2 slides on the base 1 to move closer to or away from the object to be measured. During this process, the guide rail 101 slides in the guide groove 201 to compensate for the positional offset of the laser rangefinder body 15, thereby improving the accuracy of the measurement.

[0050] As a further embodiment of this utility model, the lifting assembly further includes a slide groove 202 formed on the slide plate 2; a slider 7 is slidably fitted on the slide groove 202; and a hinge rod 8 rotatably mounted on the slider 7 and rotatably connected to a set of rotating rods 9.

[0051] As a further embodiment of this utility model, the lifting assembly also includes a motor 3 fixedly installed on the slide plate 2; a rotating shaft 4 is fixedly installed on the output end of the motor 3; a first threaded groove 401 is provided on the rotating shaft 4; a threaded block 5 is sleeved on the rotating shaft 4 and threadedly connected to the first threaded groove 401; the threaded block 5 is fixedly connected to the slider 7 through a connecting rod 6.

[0052] In this embodiment, during measurement, the motor 3 first rotates forward, thereby driving the rotating shaft 4 to rotate, which in turn drives the first threaded groove 401 to rotate. Through the threaded engagement with the threaded block 5, the threaded block 5 will gradually approach the motor 3, and through the connecting rod 6, it will drive the slider 7 to slide in the groove 202 to approach the motor 3. At this time, the hinge rod 8 can drive the rotating rod 9 to rotate, thereby increasing the angle between the rotating rod 9 and the sliding plate 2, thereby driving the laser rangefinder body 15 to gradually rise.

[0053] Afterwards, motor 3 will reverse, thereby driving shaft 4 to rotate, which in turn drives the first threaded groove 401 to rotate. Through the threaded engagement with threaded block 5, threaded block 5 will gradually move away from motor 3, and through connecting rod 6, it will drive slider 7 to slide away from motor 3 in slide groove 202. At this time, through hinge rod 8, it can drive rotating rod 9 to rotate, so as to reduce the angle between rotating rod 9 and slide plate 2, thereby driving laser rangefinder body 15 to gradually descend and reset.

[0054] During the distance measurement process, the lifting component and the position compensation component work together to measure the distance between the object to be measured and the measuring point within a certain height range. The average value of the measurement is output by the laser rangefinder body 15, which can effectively reduce the large measurement error caused by the unevenness of the surface of the object to be measured, thereby improving the accuracy of the measurement results.

[0055] As a further embodiment of this utility model, the position compensation component includes a threaded sleeve 10 fixedly installed on the base 1; the rotating shaft 4 is provided with a second threaded groove 402 that is threadedly connected to the threaded sleeve 10.

[0056] In this embodiment, when the rotating shaft 4 rotates in the forward direction, it will drive the second threaded groove 402 to rotate synchronously. During this process, it will engage with the threaded sleeve 10, so the slide plate 2 will slide on the base 1 to gradually approach the object to be tested.

[0057] When the rotating shaft 4 rotates in the opposite direction, it will drive the second threaded groove 402 to rotate synchronously. During this process, it will engage with the threaded sleeve 10, so the slide plate 2 will slide on the base 1 to gradually move away from the object to be measured.

[0058] The first thread groove 401 and the second thread groove 402 have different pitches, so that when the laser rangefinder body 15 rises or falls, the horizontal distance between the light outlet and the object to be measured remains the same, thereby improving the accuracy of the measurement.

[0059] During the distance measurement process, the lifting component and the position compensation component work together to measure the distance between the object to be measured and the measuring point within a certain height range. The average value of the measurement is output by the laser rangefinder body 15, which can effectively reduce the large measurement error caused by the unevenness of the surface of the object to be measured, thereby improving the accuracy of the measurement results.

[0060] As a further embodiment of this utility model, a fixing sleeve 11 is fixedly installed at the bottom of the base 1; a ejector pin 13 is slidably installed inside the fixing sleeve 11; a spring 12 is provided inside the fixing sleeve 11; and the two ends of the spring 12 respectively abut against the ejector pin 13 and the base 1.

[0061] In this embodiment, the ejector pin 13 is used to align with the measurement point, thereby reducing measurement error.

[0062] When the base 1 is placed, the ejector pin 13 will first contact the measuring point, and after contact, it will slide inward in the fixed sleeve 11 to compress the spring 12. The elastic force of the spring 12 can increase the squeezing force between the ejector pin 13 and the measuring point, thereby preventing the base 1 from shifting during the measurement process and thus improving accuracy.

[0063] As a further improvement of this utility model, multiple sets of brackets 14 are fixedly installed at the bottom of the base 1.

[0064] In this embodiment, the base 1 is supported by the bracket 14, so that there is a gap between the base 1 and the ground. The position of the pin 13 and the measuring point can be accurately observed through the gap, thereby effectively improving the accuracy of the measurement.

[0065] The above embodiments are exemplary and not restrictive. Therefore, without departing from the spirit or basic characteristics of this utility model, any technical solutions that can be implemented in other specific forms are included in this utility model.

Claims

1. An automatically calibrated and compensated laser rangefinder, comprising a base (1); Its features are, It also includes a laser rangefinder body (15) mounted on the base (1); a calibration compensation module (1501) is fixedly installed on the laser rangefinder body (15). It also includes a lifting assembly, which is set on the base (1) and includes multiple sets of rotating rods (9) that are rotatably connected to the laser rangefinder body (15), and the multiple sets of rotating rods (9) are arranged in parallel; the rotating rods (9) are used to drive the laser rangefinder body (15) to rise or fall; A position compensation component is used to move the laser rangefinder body (15) closer to or further away from the object to be measured when the laser rangefinder body (15) rises or falls.

2. The laser rangefinder with automatic calibration and compensation according to claim 1, characterized in that, Multiple sets of guide rails (101) are fixedly installed on the base (1); a sliding plate (2) is provided on the base (1); the sliding plate (2) is rotatably connected to the rotating rod (9); a guide groove (201) is provided on the sliding plate (2) and is slidably connected to the guide rail (101).

3. The laser rangefinder with automatic calibration and compensation according to claim 2, characterized in that, The lifting assembly also includes a slide groove (202) formed on the slide plate (2); a slider (7) is slidably fitted on the slide groove (202); and a hinge rod (8) rotatably mounted on the slider (7) and rotatably connected to a set of rotating rods (9).

4. The laser rangefinder with automatic calibration and compensation according to claim 3, characterized in that, The lifting assembly also includes a motor (3) fixedly installed on the slide plate (2); a rotating shaft (4) is fixedly installed on the output end of the motor (3); a first threaded groove (401) is provided on the rotating shaft (4); a threaded block (5) is fitted on the rotating shaft (4) and threadedly connected to the first threaded groove (401); the threaded block (5) and the slider (7) are fixedly connected by a connecting rod (6).

5. The laser rangefinder with automatic calibration and compensation according to claim 4, characterized in that, The position compensation component includes a threaded sleeve (10) fixedly installed on the base (1); the rotating shaft (4) has a second threaded groove (402) that is threadedly connected to the threaded sleeve (10).

6. The laser rangefinder with automatic calibration and compensation according to claim 1, characterized in that, A fixing sleeve (11) is fixedly installed at the bottom of the base (1); a pin (13) is slidably installed inside the fixing sleeve (11); a spring (12) is provided inside the fixing sleeve (11); the two ends of the spring (12) respectively abut against the pin (13) and the base (1).

7. The laser rangefinder with automatic calibration and compensation according to claim 1, characterized in that, Multiple sets of brackets (14) are fixedly installed on the bottom of the base (1).

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