A non-contact measuring device and a method for calibrating the level of a platform

Abstract

The present invention discloses a non-contact measurement device comprising a plurality of adjustable platforms radiating outward from a central fixed plate; a measuring device for tilt measurement mounted on the upper end surface of the central fixed plate via a fixed bracket; and a plurality of measuring arms radiating outward from the measuring device, each with its tail connected to a side wall of the measuring device, and a stylus for tilt measurement connected to the lower end of each arm's head. Also disclosed is a method for calibrating the level of the platform. Measurement is initiated by pressing a measurement start button located at the top of the measuring device. Measurement and adjustment comprise multiple steps, and platform calibration measurement is achieved by repeatedly extending the measuring arms for testing.

Description

Technical Field

[0001] The present invention belongs to the field of detection technology, and in particular relates to a non-contact measuring device and a method for calibrating the level of a platform. Background Art

[0002] Platform tilt measurement and horizontal calibration are essential prerequisites and crucial tools for conducting numerous mechanical processing experiments, related physics experiments, and geological observation experiments. Typically, instruments such as bubble-type water tube inclinometers and vertical pendulum inclinometers are used. While these instruments offer advantages such as small size, ease of use, and high accuracy, they also have a limited measurement range, typically within ±0.1mm. They also place high demands on the operating environment and measurement infrastructure. Mechanical processing, spacecraft, and geological observation experiments often require a large horizontal space, typically utilizing a multi-plate composite structure where only one plate is fixed and the remaining plates are adjustable. Summary of the Invention

[0003] The object of the present invention is to provide a non-contact measuring device and a method for calibrating the level of a platform to solve the problems of the background technology.

[0004] To achieve the above objectives, the specific technical solutions of a non-contact measurement device and a method for calibrating the platform level of the present invention are as follows:

[0005] A non-contact measuring device comprises a plurality of adjustable platforms connected in radiating directions with a central fixed plate as the center; a measuring device for tilt measurement is mounted on the upper end surface of the central fixed plate via a fixed bracket; a plurality of measuring arms are connected in radiating directions with the measuring device as the center, the tail of each measuring arm is connected to the side wall of the measuring device, and the lower end of the head of each measuring arm is connected to a probe for tilt measurement.

[0006] Furthermore, there are four directions of radiation to the surroundings, which respectively include a first adjustable platform, a second adjustable platform, a third adjustable platform, and a fourth adjustable platform that extend and connect to each other in a cross shape.

[0007] Furthermore, there are four directions of radiation to the surroundings, which respectively include a first measuring arm, a second measuring arm, a third measuring arm, and a fourth measuring arm that extend and connect to each other in a cross shape.

[0008] Furthermore, the fixing bracket is a fixed-length tripod bracket, which is fixed to the lower part of the measuring device by welding or riveting.

[0009] Furthermore, the lower end of the fixing bracket is detachably connected to the central fixing plate, and the detachable contact end is connected to a non-slip rubber pad.

[0010] Furthermore, the measuring arm is a telescopic truss, which includes a servo steering gear for controlling the telescopic movement. The steering gear shaft is equipped with a gear, and a rack is installed on the telescopic arm. The telescopic movement is achieved by meshing of the gear and rack.

[0011] Furthermore, the measuring device includes a distance measuring sensor, a register, a controller, a servo controller, four display screens and a measurement start button. The controller is an embedded MCU or STM32F103C8T6, and the servo controller is an H full-bridge controller.

[0012] Furthermore, the probe is any one of a laser generating receiver, an ultrasonic measuring device, and a capacitance measuring device.

[0013] Furthermore, the distance measuring sensor includes four distance measuring sensors, and each distance measuring sensor is electrically connected to a measuring head in a corresponding direction.

[0014] A method for calibrating the level of a platform, wherein the measurement is started by pressing a measurement start button located on the top of the measuring device. The measurement and adjustment includes the following steps:

[0015] The measuring arm is extended to measure the distance L1 between the probe and the platform where the measuring device is located;

[0016] The measuring arm continues to extend, and the distance L2 between the probe and the adjacent platform of the platform where the measuring device is located is measured. The screen displays △L = L2-L1, where the positive and negative signs indicate the direction and the value indicates the distance difference. Adjust the adjusting nuts of the adjacent platforms to make △L zero.

[0017] The measuring arm continues to extend and measures the distance L3 between the probe and the adjacent platform below the platform where the measuring device is located. The screen displays △L = L3 - L1, where the positive and negative signs indicate the direction and the value indicates the distance difference. Adjust the adjusting nuts of the adjacent platforms until △L is zero, and continue measuring all platforms.

[0018] After the measurement, move the measuring device to any distance in any diagonal direction of the central fixed plate and repeat the above measurement process;

[0019] Repeat the above steps until all △L are zero, and the tilt adjustment is completed.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] This patent uses four adjustable platforms and retractable measuring arms. The former corresponds to the corresponding probes, and multi-directional rapid leveling measurement is achieved, which realizes fast measurement. The measurement process is non-contact, and the measurement and calibration are carried out step by step by adjusting the extended measuring arm multiple times. Moreover, no pre-calibration is required, which greatly facilitates the platform level calibration measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A three-dimensional structural diagram of the non-contact measuring device proposed by the present invention with the measuring arm extended;

[0023] Figure 2 for Figure 1 Front view of

[0024] Figure 3 for Figure 1 A top view of

[0025] Figure 4 A three-dimensional structural diagram of the non-contact measuring device proposed by the present invention showing a retracted measuring arm;

[0026] Figure 5 for Figure 4 Front view of

[0027] Figure 6 for Figure 4 A top view of

[0028] Figure 7 This is the internal system connection diagram of the measuring device.

[0029] Explanation of the numbers in the figure: first adjustable platform 1, second adjustable platform 2, third adjustable platform 3, fourth adjustable platform 4, first measuring arm 5, second measuring arm 6, third measuring arm 7, fourth measuring arm 8, measuring device 9, fixed bracket 10, measuring head 11, center fixed plate 12. DETAILED DESCRIPTION

[0030] In order to better understand the purpose, structure and function of the present invention, Figure 1-7 , understanding of the present invention.

[0031] like Figure 1 and 4 As shown in FIG. , a non-contact measuring device of this design includes multiple adjustable platforms radiating outward from a central fixed plate 12. A measuring device 9 for tilt measurement is mounted on the upper end surface of the central fixed plate 12 via a fixed bracket 10. The fixed bracket 10 is a fixed-length tripod bracket fixed to the lower portion of the measuring device 9 by welding or riveting. The measuring device 9 includes a distance sensor, a register, a controller, a servo controller, four display screens, and a measurement start button. Figure 7The internal system connection diagram of the measuring device 9 shows four display screens for reading measurement values. These four displays are digital displays such as dot matrix and OLED. The controller is an embedded MCU or STM32F103C8T6, and the servo controller is an H-bridge controller. The distance measuring sensors include four, each electrically connected to the stylus 11 in the corresponding direction. The lower end of the fixed bracket 10 is detachably connected to the central fixed plate 12, and the detachable contact end is connected to a non-slip rubber pad.

[0032] like Figure 3 As shown, multiple measuring arms radiate outward from the measuring device 9, each consisting of at least one interlocking quadrilateral truss. The measuring arms are telescopic trusses, their extension and retraction controlled by the measuring device, allowing them to hover at any point during the retraction process. The measuring arms include a servo actuator to control their extension and retraction. A gear is mounted on the actuator shaft, and a rack is mounted on the telescopic arm, with retraction and retraction achieved through meshing of the gear and rack. Alternatively, the telescopic arms can be controlled by a pneumatic cylinder. The tail of each measuring arm is connected to the side wall of the measuring device 9, and the lower end of each measuring arm is connected to a probe 11 for tilt measurement.

[0033] Probe 11 is a laser generator and receiver. During measurement, it emits laser light at a fixed angle and measures the reflection angle via the receiver, obtaining the distance using the triangulation principle. Alternatively, probe 12 is an ultrasonic measuring device that generates ultrasonic waves and receives echoes, obtaining the distance using the time-of-flight (TOF) principle. Alternatively, probe 12 is a capacitive measuring device that measures the distance based on the change in capacitance between the charged probe and the plate being measured.

[0034] In the following embodiment, there are four directions (east, south, west, and north) radiating from the central fixed plate 12. These include a first adjustable platform 1, a second adjustable platform 2, a third adjustable platform 3, and a fourth adjustable platform 4, each extending and connecting in a cross shape. Each platform is connected to a screw at the bottom, and a nut is sleeved on the screw to adjust the platform's height. The four directions radiating from the central fixed plate 12 include a first measuring arm 5, a second measuring arm 6, a third measuring arm 7, and a fourth measuring arm 8, each extending and connecting in a cross shape.

[0035] A method for calibrating the level of a platform is provided, wherein the measurement is started by pressing a measurement start button on the top of a measuring device 9. The measurement and adjustment include the following steps, wherein the measurement and adjustment can be performed in the following three stages.

[0036] Stage 1: The measuring arm is extended to measure the distance L1 between the measuring head 11 and the platform where the measuring device 9 is located;

[0037] Phase 2: The measuring arm continues to extend, and the distance L2 between the probe 11 and the adjacent platform where the measuring device 9 is located is measured. The screen displays ΔL = L2 - L1, where the positive and negative signs indicate the direction and the value indicates the distance difference. The adjusting nuts of the adjacent platforms are adjusted to make ΔL zero.

[0038] Phase 3: The measuring arm continues to extend, and the distance L3 between the probe 12 and the adjacent platform next to the platform where the measuring device 9 is located is measured. The screen displays ΔL = L3 - L1, where the positive and negative signs indicate the direction and the value indicates the distance difference. The adjusting nuts of the adjacent platforms are adjusted to make ΔL zero, until all platforms are measured.

[0039] After the measurement, the measuring device 9 is moved to any distance in any diagonal direction of the central fixed plate 12 and the above measurement process is repeated;

[0040] Repeat the above steps until all △L are zero, and the tilt adjustment is completed.

[0041] The four adjustable platforms and the retractable measuring arms used in the present invention, in combination with the corresponding measuring heads 11, allow for a non-contact measuring process, and can quickly adjust the measurement to improve efficiency.

[0042] It will be understood that the present invention is described by way of some embodiments, and it will be appreciated by those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A method for calibrating a platform level, characterized by: The measurement is started by pressing a measurement start button on the top of the measuring device (9). The measuring device (9) includes a plurality of adjustable platforms connected in radiating directions with a central fixed plate (12) as the center; the upper end surface of the central fixed plate (12) is connected to the measuring device (9) through a fixed bracket (10); a plurality of measuring arms are connected in radiating directions with the measuring device (9) as the center, the tail of each measuring arm is connected to the side wall of the measuring device (9), and the lower end of the head of each measuring arm is connected to a probe (11) for tilt measurement; The measuring head (11) is located between the adjustable platform and the lower end of the measuring arm head; There are four directions of radiation to the surroundings, which respectively include a first adjustable platform (1), a second adjustable platform (2), a third adjustable platform (3), and a fourth adjustable platform (4) which extend and connect to each other in a cross shape; Measuring and adjusting involves the following steps: The measuring arm is extended to measure the distance L1 between the measuring head (11) and the platform where the measuring device (9) is located; The measuring arm continues to extend, and the distance L2 between the probe (11) and the adjacent platform where the measuring device (9) is located is measured, and the screen displays △L=L2-L1, where the positive and negative signs indicate the direction and the value indicates the distance difference. The adjusting nuts of the adjacent platforms are adjusted to make △L zero; The measuring arm continues to extend, and the distance L3 between the probe (11) and the adjacent platform next to the platform where the measuring device (9) is located is measured, and the screen displays △L=L3-L1, where the positive and negative signs indicate the direction and the value indicates the distance difference; the adjusting nuts of the adjacent platforms are adjusted to make △L zero, until all platforms are measured; After the measurement, the measuring device (9) is moved to any distance in any diagonal direction of the central fixed plate (12), and the above-mentioned measurement process is repeated; Repeat the above steps until all △L are zero, and the tilt adjustment is completed.

2. The method for calibrating the platform level according to claim 1, characterized in that: The fixed bracket (10) is a fixed-length tripod bracket, which is fixed to the lower part of the measuring device (9) by welding or riveting.

3. The method for calibrating the platform level according to claim 1, characterized in that: The lower end of the fixing bracket (10) and the central fixing plate (12) are detachably connected, and the detachable contact end is connected to a non-slip rubber pad.

4. The method for calibrating the platform level according to claim 1, characterized in that: The measuring arm is a telescopic truss, which includes a servo steering gear for controlling the telescopic movement. A gear is installed on the steering gear shaft, and a rack is installed on the telescopic arm. The telescopic movement is achieved through the meshing of the gear and rack.

5. The method for calibrating the platform level according to claim 1, characterized in that: The measuring device (9) comprises a distance measuring sensor, a register, a controller, a steering gear controller, four display screens and a measurement start button. The controller is an embedded MCU or STM32F103C8T6, and the steering gear controller is an H full-bridge controller.

6. The method for calibrating the platform level according to claim 1, characterized in that: The probe (11) is any one of a laser generating receiver, an ultrasonic measuring device, and a capacitance measuring device.

7. The method for calibrating the platform level according to claim 5, characterized in that: The distance measuring sensor includes four distance measuring sensors, and each distance measuring sensor is electrically connected to a measuring head (11) in a corresponding direction.

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