Accurate positioning device integrating dual-mode distance measurement and horizontal calibration

Abstract

The invention provides a precise positioning device integrating dual-mode distance measurement and horizontal calibration, and relates to the technical field of precise measurement. The precise positioning device integrating dual-mode distance measurement and horizontal calibration comprises a power supply structure and a shell. According to the invention, integration of the ranging function and scene self-adaption are realized, and the success rate and reliability of measurement are effectively improved. Through a built-in horizontal calibration module and a core algorithm, the key problem that real space coordinates can be obtained only by depending on manual conversion when existing equipment is used for measuring on a non-horizontal reference plane is solved. The device can automatically sense the inclination attitude of the device, carry out real-time geometric correction on original distance measurement data, and directly output a positioning result based on a horizontal reference, so that systematic errors caused by improper operation attitude are eliminated, the measurement process is simpler and more convenient, and the precision and reliability of final data are substantially improved.

Description

Technical Field

[0001] This invention relates to the field of precision measurement technology, specifically to a precision positioning device that integrates dual-mode ranging and horizontal calibration. Background Technology

[0002] Precision positioning technology, as the cornerstone of modern industrial measurement, construction engineering, and equipment installation, has always been driven by the pursuit of higher accuracy, efficiency, and adaptability. Early positioning work heavily relied on traditional tools such as measuring tapes and levels, resulting in high labor intensity and susceptibility to human error. With technological advancements, electronic ranging devices such as ultrasonic and laser rangefinders gradually became widespread, marking the first leap from mechanical to electronic measurement and significantly improving the accuracy and convenience of distance measurement. In recent years, with the development of sensor technology and miniaturization, measuring tools integrating multiple sensors have begun to appear on the market, signifying that these products are evolving from single-function to integrated and intelligent technologies, providing new possibilities for spatial positioning in complex scenarios.

[0003] However, existing integrated or single-function positioning products still have significant technical drawbacks in practical applications. First, the problem of limited functionality is prominent. Users often need to carry multiple tools such as laser rangefinders, levels, and measuring tapes, using them interchangeably. This process is cumbersome, and the data cannot be automatically integrated, leading to low measurement efficiency and increasing the risk of human error. Second, existing devices generally lack intelligent sensing and compensation capabilities for measurement benchmarks. Most handheld rangefinders default to an ideal horizontal state during operation. Once the device tilts, the measured slope distance data cannot directly reflect the true spatial position, requiring complex triangulation by hand. This not only places high demands on the operator's expertise but also introduces a significant systematic error under tilted conditions. Furthermore, regarding the ranging function itself, a single laser ranging mode is prone to failure when facing specific materials such as glass and highly light-absorbing surfaces, while a single ultrasonic ranging mode is easily affected by environmental temperature and humidity and has limited accuracy. Existing products lack a collaborative ranging mechanism that can automatically optimize or complementarily verify the best method under different scenarios.

[0004] Therefore, to address a series of key issues in existing technologies, such as fragmented positioning tool functions, reliance on manual judgment for benchmarks, insufficient adaptability of ranging modes, and consequently cumbersome measurement processes and low data reliability, it is necessary to deeply improve and optimize their structure. By integrating a dual-mode ranging mechanism, high-precision horizontal attitude sensing, and automatic error compensation algorithm into a unified design, a self-contained and self-calibrating measurement benchmark system can be constructed. This system can directly output accurate spatial coordinates without relying on external horizontal conditions, fundamentally solving the pain points of the aforementioned existing technologies and meeting the urgent needs of modern high-standard operations for accurate, efficient, and reliable measurement data. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a precision positioning device that integrates dual-mode ranging and horizontal calibration, thus solving the problems existing in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a precision positioning device integrating dual-mode ranging and horizontal calibration, comprising a power supply structure and a housing;

[0007] The housing consists of an upper shell and a bottom plate detachably connected to its lower wall;

[0008] The upper inner wall of the upper shell is provided with a motherboard, and the lower wall of the motherboard is provided with a main control module and a tilt sensor;

[0009] A display is provided on the upper wall of the upper shell near the rear end, and multiple sets of buttons are provided on the upper wall of the upper shell behind the display screen;

[0010] The upper shell has a laser ranging window at its front end, a laser light output hole at its front end and to the left of the laser ranging window, and an ultrasonic generating probe and an ultrasonic receiving probe arranged vertically below the laser ranging window at its front end.

[0011] A standard threaded hole is provided at the bottom of the base plate, located at the center of the top view projection.

[0012] The bottom of the base plate is provided with three sets of screws arranged in a triangular shape. Each set of screws is fixedly connected to a set of feet at the end away from the base plate, and each set of feet is provided with an anti-slip pad on the side away from the screw.

[0013] Preferably, the standard threaded hole is a 1 / 4-inch-20UNC standard photographic tripod threaded hole.

[0014] Preferably, the display screen is a rectangular LCD touch screen.

[0015] Preferably, the main control module is a 32-bit MCU based on the ARM Cortex-M core.

[0016] Preferably, the tilt sensor is a MEMS-type dual-axis digital tilt sensor.

[0017] Preferably, the laser ranging window contains a laser ranging module based on the time-of-flight method.

[0018] Preferably, the power supply structure is a rechargeable lithium battery, which is disposed in the inner cavity of the housing formed by the closing of the upper shell and the bottom plate.

[0019] Preferably, the optical axis of the laser emission aperture and the optical axis of the internal module of the laser ranging window are kept parallel after calibration.

[0020] This invention provides a precision positioning device integrating dual-mode ranging and horizontal calibration. It offers the following advantages:

[0021] 1. Compared with existing technologies, this precision positioning device integrating dual-mode ranging and horizontal calibration achieves integrated ranging functionality and scene adaptability, effectively improving the success rate and reliability of measurements. By integrating laser ranging and ultrasonic ranging modes into one unit, it solves the technical drawback of existing single ranging devices that are prone to failure when facing complex targets (such as transparent, strongly light-absorbing, or soft surfaces). When one ranging mode cannot work properly due to target characteristics or environmental interference, the system can automatically activate or switch to another mode for supplementary measurement, thereby ensuring that effective distance data can be obtained in various complex application scenarios, overcoming the shortcomings of traditional devices that are single-function and have poor adaptability.

[0022] 2. Compared with existing technologies, this precision positioning device integrating dual-mode ranging and horizontal calibration achieves automatic establishment of measurement benchmarks and automatic compensation for tilt errors, fundamentally ensuring the directness and accuracy of spatial positioning data. Through its built-in horizontal calibration module and core algorithm, it solves the key problem of existing equipment requiring manual conversion to obtain true spatial coordinates when measuring on non-horizontal reference surfaces. The device can automatically sense its own tilt attitude and perform real-time geometric correction on the raw ranging data, directly outputting positioning results based on a horizontal benchmark. This eliminates systematic errors introduced by improper operating posture, simplifies the measurement process, and substantially improves the accuracy and reliability of the final data. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention;

[0024] Figure 2 For the present invention Figure 1 A magnified view of a section at point A in the middle;

[0025] Figure 3 This is a schematic diagram of the bottom structure of the base plate of the present invention;

[0026] Figure 4 This is a top-view schematic diagram of the internal structure of the upper shell of the present invention.

[0027] The components include: 1. Base plate; 2. Top shell; 3. Display screen; 4. Laser rangefinder window; 5. Laser light output hole; 6. Ultrasonic generating probe; 7. Ultrasonic receiving probe; 8. Screw; 9. Foot; 10. Anti-slip pad; 11. Standard threaded hole; 12. Main board; 13. Button; 14. Main control module; 15. Tilt sensor. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Example:

[0030] like Figures 1 to 4 As shown, this embodiment of the invention provides a precision positioning device that integrates dual-mode ranging and horizontal calibration.

[0031] To provide physical support, internal component protection, and convenient power supply for the device, this embodiment includes a power supply structure and a housing. The housing consists of an upper shell 2 and a base plate 1 detachably connected to its lower wall by screws, forming a sealed inner cavity. The power supply structure is a rechargeable lithium battery housed within the housing cavity, providing an independent and stable power supply for the entire device. Through this structure, the device achieves a compact, integrated design, facilitating portability and field operations. The detachable base plate 1 also provides convenience for battery replacement and internal maintenance.

[0032] To enable the device to automatically sense data processing, logic control, and horizontal reference, a main board 12 is fixedly mounted on the upper inner wall of the upper shell 2 via a support column. A main control module 14 and a tilt sensor 15 are welded to the lower wall of the main board 12. The main control module 14 is a 32-bit MCU based on an ARM Cortex-M core, responsible for processing and calculating all signals; the tilt sensor 15 is a MEMS-type dual-axis digital tilt sensor used to monitor the device's pitch and roll angles in real time. Through this structure, the device establishes an intelligent control core and gains the ability to autonomously sense spatial attitude, laying the hardware foundation for subsequent automatic tilt error compensation and solving the technical drawback of existing equipment that cannot automatically identify measurement references.

[0033] To enable parameter setting, function triggering, and intuitive display of measurement results, a display 3, which is a rectangular LCD touchscreen, is embedded in the upper wall of the upper shell 2 near the rear end. Multiple sets of buttons 13 are located on the upper wall of the upper shell 2, behind the display 3, for basic operations such as power on / off and measurement mode selection. When the user operates the device, the display 3 graphically displays the bubble level, measurement data, and menu, while the buttons 13 provide reliable physical feedback. This structure enables efficient and intuitive information interaction between the user and the device, reducing the learning cost and operational threshold.

[0034] To address the issue of existing single-mode ranging devices being prone to failure in complex scenarios and to achieve redundant backup and scene adaptation for ranging functions, this embodiment incorporates a dual-mode ranging unit. A laser ranging window 4 is located at the front end of the upper shell 2, housing a time-of-flight-based laser ranging module for high-precision ranging of most targets. A laser emission aperture 5 is located at the front end of the upper shell 2, to the left of the laser ranging window 4. Its optical axis is parallel to the optical axis of the module inside the laser ranging window 4 after factory calibration, providing the user with a visible aiming spot. An ultrasonic generator probe 6 and an ultrasonic receiver probe 7 are arranged vertically below the laser ranging window 4 at the front end of the upper shell 2, forming an ultrasonic ranging unit. When facing targets that are difficult to measure with laser, such as glass or strongly light-absorbing surfaces, the ultrasonic ranging unit can be activated or automatically switched as an effective supplementary measurement method. Through this structure, the device significantly improves the measurement success rate and overall reliability under different environments and target characteristics.

[0035] To ensure a stable and level measurement reference in any location and to be compatible with professional supports for expanded applications, the base plate 1 has three sets of screws 8 arranged in a triangular pattern at its bottom, allowing for independent height adjustment via rotation. Each set of screws 8 has a foot 9 fixedly connected to its end furthest from the base plate 1, and each foot 9 has an anti-slip pad 10 bonded to its side furthest from the screw 8 to increase friction and prevent slippage. A standard threaded hole 11 is also located at the bottom of the base plate 1, at the center of the top-view projection. This standard threaded hole 11 is a 1 / 4-inch-20UNC standard photographic tripod threaded hole. When the device is placed on an uneven surface, the user can adjust the three sets of screws 8 and observe the electronic level on display 3 to level the device. For long-term monitoring at high altitudes or fixed points, the entire device can be quickly mounted onto a tripod through the standard threaded hole 11. This structure provides flexible and stable support and installation, fundamentally ensuring the accuracy of the measurement reference and enhancing its environmental adaptability.

[0036] Working principle

[0037] The working principle of this invention is as follows: First, the user adjusts the three sets of screws 8 at the bottom of the base plate 1, or uses the standard threaded holes 11 to mount the device on a tripod and level it. At this time, the tilt sensor 15 monitors the device's attitude in real time and confirms that a horizontal reference has been established. Then, the user aims at the target through the visible light spot generated by the laser output hole 5 and presses button 13 to start the measurement. The main control module 14 prioritizes driving the module within the laser ranging window 4 for high-precision ranging; if the laser signal is abnormal, it automatically activates the ultrasonic generator probe 6 and the ultrasonic receiver probe 7 for ultrasonic ranging, ensuring that effective distance data can be obtained under any circumstances. After acquiring the original slope distance and the current tilt angle data, the main control module 14 runs the internally stored compensation algorithm to automatically calculate the true horizontal distance and height difference of the target point relative to the measurement origin. Finally, this calibrated and accurate spatial coordinate information is clearly presented to the user through the display 3, thus completing a complete precision positioning operation.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A precision positioning device integrating dual-mode ranging and horizontal calibration, comprising a power supply structure and a housing, characterized in that, The housing consists of an upper shell (2) and a bottom plate (1) detachably connected to its lower wall; The upper inner wall of the upper shell (2) is provided with a main board (12), and the lower wall of the main board (12) is provided with a main control module (14) and a tilt sensor (15); The upper shell (2) has a display (3) on its upper wall and near the rear end, and multiple sets of buttons (13) are provided on the upper wall of the upper shell (2) and behind the display screen (3); The upper shell (2) is provided with a laser ranging window (4) at the front end, and a laser light output hole (5) is provided at the front end of the upper shell (2) and to the left of the laser ranging window (4). An ultrasonic generating probe (6) and an ultrasonic receiving probe (7) are arranged vertically below the laser ranging window (4) at the front end of the upper shell (2). The bottom of the base plate (1) is provided with a standard threaded hole (11) located at the center of the top view projection; The bottom of the base plate (1) is provided with three sets of screws (8), which are arranged in a triangular shape. Each set of screws (8) is fixedly connected to a set of feet (9) at the end away from the base plate (1), and each set of feet (9) is provided with an anti-slip pad (10) on the side away from the screws (8).

2. The precise positioning device according to claim 1, characterized in that, The standard threaded hole (11) is a 1 / 4-inch - 20UNC standard photographic tripod threaded hole.

3. The precise positioning device according to claim 1, characterized in that, The display screen (3) is a rectangular LCD touch screen.

4. The precise positioning device according to claim 1, characterized in that, The main control module (14) is a 32-bit MCU based on the ARM Cortex-M core.

5. The precise positioning device according to claim 1, characterized in that, The tilt sensor (15) is a MEMS-type dual-axis digital tilt sensor.

6. The precise positioning device according to claim 1, characterized in that, The laser ranging window (4) contains a laser ranging module based on the time-of-flight method.

7. The precise positioning device according to claim 1, characterized in that, The power supply structure is a rechargeable lithium battery, which is installed in the inner cavity of the shell formed by the closing of the upper shell (2) and the bottom plate (1).

8. The precision positioning device according to claim 1, characterized in that, The optical axis of the laser output aperture (5) and the optical axis of the internal module of the laser ranging window (4) are kept parallel after calibration.

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