Device for calibrating laser leveling instruments

Abstract

The present disclosure relates to a device for calibrating a laser leveler, comprising: a base platform, which is configured to support the laser leveler to be installed thereon at a first position; a laser detector, which is arranged at a second position of the base platform and is configured to receive laser light; and an optical path extension device, which is arranged at a third position between the laser leveler and the laser detector and is configured to receive the laser light emitted by the laser leveler and project the laser light onto the laser detector after being adjusted by the optical path extension device. With the aid of the optical path extension device, the physical distance between the laser leveler and the laser detector can be optically extended, and the technical effect of the optical path distance between the laser leveler and the laser detector being amplified can be simulated while the physical distance between the laser leveler and the laser detector remains unchanged, so that the laser leveler can be calibrated according to the amplified optical path distance, thereby improving the calibration accuracy.

Description

Technical Field

[0001] The present disclosure relates to the field of laser measurement, and more particularly to a device for calibrating a laser leveler. Background Art

[0002] The traditional method of calibrating a laser level usually uses a fixed distance, such as a fixed distance of 5 meters or 10 meters. The laser level and laser detector are then fixed at preset positions and calibrated at a fixed distance. However, such a solution will make the distance between the laser level and the detector larger, have higher space requirements, and also have more interference factors. Summary of the invention

[0003] In view of a deep understanding of the problems existing in the background technology, the inventors of the present disclosure conceived of designing a method for optically amplifying the physical distance between a laser level and a laser detector by means of an optical device, thereby amplifying the physical distance in a limited space and improving the calibration accuracy.

[0004] Specifically, the present disclosure proposes a device for calibrating a laser leveler, characterized in that the device comprises:

[0005] a base platform configured to support a laser leveling instrument to be mounted thereon at a first position;

[0006] a laser detector disposed at a second location on the base platform and configured to receive laser light; and

[0007] An optical path extension device is arranged at a third position between the laser leveler and the laser detector and is configured to receive the laser emitted by the laser leveler and project the laser onto the laser detector after being adjusted by the optical path extension device.

[0008] With the help of the optical path extension device, the physical distance between the laser leveler and the laser detector can be optically amplified and extended, so that the technical effect of the optical path distance between the laser leveler and the detector being amplified can be simulated while the physical distance between the laser leveler and the laser detector remains unchanged. Therefore, the laser leveler can be calibrated according to the amplified optical path distance, thereby improving the calibration accuracy.

[0009] In one embodiment according to the present disclosure, the optical path extension device comprises:

[0010] An objective lens, the objective lens being configured to receive the laser emitted by the laser leveling instrument;

[0011] an objective focusing lens, wherein the objective focusing lens is configured to perform focusing processing on the laser light received by the objective lens; and

[0012] An eyepiece, wherein the eyepiece is configured to project the laser light adjusted by the objective focusing lens onto the laser detector.

[0013] In this way, the laser can be processed by the objective focusing lens after being received by the objective lens, and then projected by the eyepiece and projected onto the laser detector. Therefore, the physical distance between the laser leveler and the laser detector can be optically magnified through the processing of the objective focusing lens.

[0014] In one embodiment according to the present disclosure, the optical path extension device further includes a crosshair graticule, wherein the crosshair graticule is disposed between the objective focusing lens and the eyepiece.

[0015] In one embodiment of the present disclosure, the objective lens is an objective lens group including a group of objective lenses, that is, the objective lens may include a plurality of sub-objective lenses, so that the group composed of these sub-objective lenses can achieve a better optical effect.

[0016] In one embodiment according to the present disclosure, the optical path extending device has an optical path extension factor of a first multiple.

[0017] In one embodiment according to the present disclosure, the optical path extension device is constructed as a level, wherein the optical path center of the level is aligned with the laser emitted by the laser leveler.

[0018] In one embodiment according to the present disclosure, the base platform further comprises:

[0019] A control device is configured to determine whether the laser leveling instrument needs to be calibrated based on the simulated distance determined by the position data of the first position, the second position and the third position and the optical path extension multiple of the optical path extension device, the deviation distance determined according to the position of the laser emitted by the laser leveling instrument on the laser receiver before and after rotating by a first angle, and the first angle. In this way, automatic calibration of the laser leveling instrument can be achieved.

[0020] In one embodiment according to the present disclosure, the base further comprises:

[0021] A rotation device is configured to rotate the laser leveler to the first angle based on a control command received from the control device. Preferably, in an embodiment according to the present disclosure, the first angle is an angle value among 180 degrees, 90 degrees or 270 degrees.

[0022] In one embodiment according to the present disclosure, when the control device determines that the laser leveler needs to be calibrated, the control device determines a calibration signal based on the simulation distance, the deviation distance and the first angle, and sends the calibration signal to the laser leveler.

[0023] In one embodiment according to the present disclosure, there is a wired connection or a wireless connection between the base platform and the laser leveler and / or between the base platform and the laser detector, and the wired connection or the wireless connection is constructed to transmit the calibration signal from the control device to the laser leveler.

[0024] In one embodiment according to the present disclosure, the wireless connection includes at least one of an infrared connection, a Bluetooth connection or a WiFi connection.

[0025] In one embodiment according to the present disclosure, the device further comprises:

[0026] A display unit is configured to display a maximum height difference value determined based on the simulation distance, the deviation distance, and a maximum allowable error of the laser leveling instrument.

[0027] To sum up, the device for calibrating a laser leveler according to the present invention can optically amplify and extend the physical distance between the laser leveler and the detector with the help of an optical path extension device, thereby simulating the technical effect of amplifying the optical path distance between the laser leveler and the laser detector while keeping the physical distance between the laser leveler and the laser detector unchanged, thereby realizing the calibration of the laser leveler based on the amplified optical path distance and improving the calibration accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The embodiments are shown and explained with reference to the accompanying drawings. These drawings are used to explain the basic principles, and only the aspects necessary for understanding the basic principles are shown. These drawings are not to scale. In the drawings, the same reference numerals represent similar features.

[0029] Figure 1 A schematic structural diagram of a device 100 for calibrating a laser leveling instrument according to an embodiment of the present disclosure is shown;

[0030] Figure 2 The content of this disclosure is shown Figure 1 A schematic diagram of the structure of the optical path extension device 120 in the device 100 for calibrating a laser leveling instrument according to an embodiment of the present invention; and

[0031] Figure 3 FIG. 2 is a schematic structural diagram of an optical path extending device 220 according to another embodiment of the present disclosure.

[0032] Other features, characteristics, advantages and benefits of the present disclosure will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. DETAILED DESCRIPTION

[0033] In the following specific description of preferred embodiments, reference will be made to the attached drawings that form a part of the present disclosure. The attached drawings show specific embodiments that can implement the present disclosure by way of example. The illustrative embodiments are not intended to be exhaustive of all embodiments according to the present disclosure. It will be appreciated that other embodiments may be utilized, and structural or logical modifications may be made without departing from the scope of the present disclosure. Therefore, the following specific description is not restrictive, and the scope of the present disclosure is limited by the attached claims.

[0034] In order to solve the technical problem in the prior art that the calibration of the laser leveler is limited by space, the inventor of the present disclosure conceived of designing a method for optically amplifying the physical distance between the laser leveler and the laser detector with the aid of an optical device, thereby amplifying the physical distance within a limited space and improving the calibration accuracy.

[0035] The device for calibrating a laser leveling device according to the present disclosure is further described below in conjunction with the attached drawings.

[0036] Figure 1 FIG. 1 is a schematic diagram showing a structure of an apparatus 100 for calibrating a laser leveling instrument according to an embodiment of the present disclosure. Figure 1It can be seen that the device 100 for calibrating a laser leveler includes: a base platform 160, which is configured to support a laser leveler 110 to be mounted thereon at a first position; a laser detector 130, which is arranged at a second position of the base platform 160 and is configured to receive laser light; and an optical path extension device 120, which is arranged at a third position between the laser leveler 110 and the laser detector 130 and is configured to receive the laser light 140 emitted by the laser leveler and project it onto the laser detector 130 after being adjusted by the optical path extension device 120. Here, the laser light projected by the optical path extension device 120 is, for example, laser light 150. With the aid of the optical path extension device 120, the physical distance between the laser leveler 110 and the laser detector 130 can be optically amplified and extended, so that when the physical distance between the laser leveler 110 and the laser detector 130 remains unchanged, that is, when both are still on the base platform 160, the technical effect of the optical path distance between the laser leveler 110 and the laser detector 130 being amplified can be simulated, so that the laser leveler 110 can be calibrated according to the amplified optical path distance, thereby improving the calibration accuracy. For example, when the distance between the laser leveler 110 and the laser detector 130 is only 30 centimeters, it is possible to simulate that the distance between the laser leveler 110 and the laser detector 130 is 6 meters, so that the calibration accuracy that can be achieved by a distance of 6 meters can be achieved without expanding the actual physical distance, that is, without requiring a calibration space.

[0037] To further illustrate the internal structure of the optical path extension device 120, Figure 2 The content of this disclosure is shown Figure 1 A schematic diagram of the structure of the optical path extension device 120 in the device 100 for calibrating a laser leveling instrument according to an embodiment of the present invention. Figure 2 It can be seen that the optical path extension device 120 includes: an objective lens 122, which is configured to receive the laser emitted by the laser leveler 110; an objective lens focusing lens 124, which is configured to perform focusing processing on the laser received by the objective lens 122; and an eyepiece 126, which is configured to project the laser adjusted by the objective lens focusing lens 124 onto the laser detector 130. In this way, the laser can be processed by the objective lens focusing lens 124 after being received by the objective lens 122, and then projected by the eyepiece 126 and projected onto the laser detector 130, so that the physical distance between the laser leveler 110 and the laser detector 130 can be optically magnified after being processed by the objective lens focusing lens 124.

[0038] Apart from Figure 2 In addition to the structure of the optical path extension device 120 shown, it can also have other optical structures, such as Figure 3 FIG. 2 shows a schematic diagram of the structure of an optical path extension device 220 according to another embodiment of the present disclosure. Figure 3 It can be seen that the optical path extension device 220 includes: an objective lens 222, which is configured to receive the laser emitted by the laser leveler 110; an objective lens focusing lens 224, which is configured to focus the laser received by the objective lens 222; and an eyepiece 226, which is configured to project the laser adjusted by the objective lens focusing lens 224 onto the laser detector 130. In addition, Figure 2 The difference of the optical path extension device 220 shown is that the optical path extension device 220 also includes a crosshair graticule 225, wherein the crosshair graticule 225 is arranged between the objective lens focusing lens 224 and the eyepiece 226, and is used for auxiliary alignment of the laser. In this way, the laser can be processed by the objective lens focusing lens 224 after being received by the objective lens 222, and then projected by the eyepiece 226 and projected onto the laser detector 130, so that the physical distance between the laser leveling instrument 110 and the laser detector 130 can be optically amplified after being processed by the objective lens focusing lens 224. Preferably, in an embodiment according to the present disclosure, the objective lens is an objective lens group including a group of objective lenses. That is, the objective lens can include a plurality of sub-objective lenses, so that the set composed of these sub-objective lenses achieves a better optical effect.

[0039] In one embodiment according to the present disclosure, the optical path extension device has a first multiple of the optical path extension multiple. Preferably, in one embodiment according to the present disclosure, the first multiple is 32 times. Here, for example, when the distance between the laser leveler 110 and the laser detector 130 is only 20 centimeters, when the first multiple is 32 times, it is possible to simulate, for example, a situation where the distance between the laser leveler 110 and the laser detector 130 is 6.4 meters, so that the calibration accuracy that can be achieved by a distance of 6.4 meters can be achieved without expanding the actual physical distance, that is, without requiring a calibration space. It is understandable that the multiple can also be 26 times, or the required multiple can be selected according to actual needs.

[0040] In one embodiment according to the present disclosure, the optical path extension device is constructed as a level, wherein the optical path center of the level is aligned with the laser emitted by the laser leveler.

[0041] In one embodiment of the present disclosure, the base platform 160 further includes: a control device (not shown in the figure), the control device being configured to determine whether the laser leveler needs to be calibrated based on the simulated distance determined by the position data of the first position, the second position and the third position and the optical path extension multiple of the optical path extension device, the deviation distance determined by the position of the laser emitted by the laser leveler on the laser receiver before and after rotating by the first angle, and the first angle. In this way, automatic calibration of the laser leveler can be achieved.

[0042] In one embodiment of the present disclosure, the base further comprises: a rotating device, the rotating device being configured to rotate the laser leveling instrument to the first angle based on a control command received from the control device. Preferably, in one embodiment of the present disclosure, the first angle is an angle value among 180 degrees, 90 degrees or 270 degrees.

[0043] In one embodiment according to the present disclosure, when the control device determines that the laser leveler needs to be calibrated, the control device determines a calibration signal based on the simulation distance, the deviation distance and the first angle, and sends the calibration signal to the laser leveler. In one embodiment according to the present disclosure, there is a wired connection or a wireless connection between the base platform and the laser leveler and / or between the base platform and the laser detector, and the wired connection or the wireless connection is constructed to transmit the calibration signal from the control device to the laser leveler. In one embodiment according to the present disclosure, the wireless connection includes at least one connection method selected from infrared connection, Bluetooth connection or WiFi connection. In one embodiment according to the present disclosure, the device further includes: a display unit, which is constructed to display a maximum height difference value determined based on the simulation distance, the deviation distance and the maximum allowable error of the laser leveler.

[0044] To sum up, the device for calibrating a laser leveler according to the present invention can optically amplify and extend the physical distance between the laser leveler and the laser detector with the help of an optical path extension device, thereby simulating the technical effect of amplifying the optical path distance between the laser leveler and the laser detector while keeping the physical distance between the laser leveler and the laser detector unchanged, thereby calibrating the laser leveler based on the amplified optical path distance and improving the calibration accuracy.

[0045] Although different exemplary embodiments of the present disclosure have been described, it will be apparent to those skilled in the art that different changes and modifications can be made that can achieve one or some of the advantages of the present disclosure without departing from the spirit and scope of the present disclosure. For those skilled in the art, other components that perform the same function may be appropriately replaced. It should be understood that the features explained herein with reference to specific figures may be combined with the features of other figures, even in those cases where this is not explicitly mentioned. In addition, the method of the present disclosure may be implemented in a software implementation using all appropriate processor instructions or in a hybrid implementation that utilizes a combination of hardware logic and software logic to obtain the same result. Such modifications to the scheme according to the present disclosure are intended to be covered by the appended claims.

Claims

1. A device for calibrating a laser leveling instrument, characterized in that: The device comprises: a base platform configured to support a laser leveling instrument to be mounted thereon at a first position; a laser detector disposed at a second location on the base platform and configured to receive laser light; an optical path extension device, the optical path extension device being disposed at a third position between the laser leveler and the laser detector and being configured to receive the laser light emitted by the laser leveler and project the laser light onto the laser detector after being adjusted by the optical path extension device; and A control device, wherein the control device is constructed to determine whether the laser leveling device needs to be calibrated based on a simulated distance determined by position data of the first position, the second position and the third position and the optical path extension multiple of the optical path extension device, a deviation distance determined according to the positions of the laser emitted by the laser leveling device on the laser receiver before and after rotating by a first angle, and the first angle.

2. The device according to claim 1, characterized in that The optical path extension device comprises: An objective lens, the objective lens being configured to receive the laser emitted by the laser leveling instrument; an objective focusing lens, wherein the objective focusing lens is configured to perform focusing processing on the laser light received by the objective lens; and An eyepiece, wherein the eyepiece is configured to project the laser light adjusted by the objective focusing lens onto the laser detector.

3. The device according to claim 2, characterized in that The optical path extension device also includes a crosshair graticule, wherein the crosshair graticule is arranged between the objective focusing lens and the eyepiece.

4. The device according to claim 2 or 3, characterized in that The objective lens is an objective lens group including a group of objective lenses.

5. The device according to claim 1, characterized in that The optical path extending device has an optical path extending factor of a first multiple.

6. The device according to claim 1, characterized in that The optical path extension device is configured as a level, wherein the optical path center of the level is aligned with the laser emitted by the laser leveler.

7. The device according to claim 1, characterized in that The base also includes: A rotating device is configured to rotate the laser leveler to the first angle based on a control command received from the control device.

8. The device according to claim 1 or 7, characterized in that The first angle is an angle value among 180 degrees, 90 degrees or 270 degrees.

9. The device according to claim 1, characterized in that When the control device determines that the laser leveler needs to be calibrated, the control device determines a calibration signal based on the simulation distance, the deviation distance, and the first angle, and sends the calibration signal to the laser leveler.

10. The device according to claim 9, characterized in that There is a wired connection or a wireless connection between the base platform and the laser leveler and / or between the base platform and the laser detector, and the wired connection or the wireless connection is configured to transmit the calibration signal from the control device to the laser leveler.

11. The device according to claim 10, characterized in that The wireless connection includes at least one of an infrared connection, a Bluetooth connection or a WiFi connection.

12. The device according to claim 1, characterized in that The device also includes: A display unit is configured to display a maximum height difference value determined based on the simulation distance, the deviation distance, and a maximum allowable error of the laser leveling instrument.

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