Surveying and mapping device for automatically searching target

Abstract

The invention relates to the technical field of image recognition and search, and discloses a surveying and mapping device capable of automatically searching a target, which comprises a base, surveying and mapping equipment is arranged at the top of the base, a searching mechanism is arranged at the top of the surveying and mapping equipment, the searching mechanism comprises a supporting block, and the supporting block is fixedly connected to the front side of the top of the surveying and mapping equipment. A semiconductor laser is installed on the left side of the supporting block, an emission lens is fixedly connected to the right side of the supporting block, and a fixing plate is fixedly connected to the right side of the top of the surveying and mapping device. According to the invention, the transmitting lens is matched with the transmitting cylindrical mirror, an elliptical Gaussian beam emitted by the semiconductor laser is converted into a fan-shaped line light source with uniform energy distribution by adopting a means of combining slow axis collimation and fast axis beam expansion, and a specified search angle is covered; the problems of non-uniform divergence of the infrared light source in the vertical direction and low light energy utilization rate in the prior art are avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of image recognition search, in particular to a surveying and mapping device for automatically searching target. BACKGROUND

[0002] The surveying and mapping device is an important tool for obtaining terrain, landform and geographic coordinate data, and is widely used in engineering construction, planning and design, land resource investigation and mine surveying field. With the development of science and technology, modern surveying and mapping devices have developed from traditional pure optical theodolites and levels to high-precision total stations or three-dimensional laser scanners integrating light, machine, electricity and calculation.

[0003] In actual surveying and mapping operation, especially when multi-point measurement or continuous monitoring needs to be performed at a complex construction site, the operator often needs to frequently adjust the instrument aiming part to manually search and accurately aim at the remote cooperative target through the telescope eyepiece. This traditional manual aiming method not only wastes time and effort, but also greatly increases the labor intensity of the field personnel. Therefore, it is of great significance to develop a surveying and mapping device with automatic search, recognition and locking functions for improving surveying and mapping efficiency and ensuring measurement accuracy.

[0004] The existing surveying and mapping device with automatic search function usually adopts a laser emitter cooperating with a photoelectric sensor to realize target detection. When the detection light beam is scanned to the cooperative target, the optical signal is reflected back to the receiving end, and after photoelectric conversion, the locking mechanism is triggered. However, the existing device directly expands the beam with a simple infrared point light source. Since the light beam emitted by the semiconductor laser usually presents an elliptical Gaussian distribution, the energy distribution of the light spot after direct expansion is extremely uneven, presenting the characteristics of strong center and weak edge. This leads to a significant attenuation of the reflected signal strength when the target is located at the edge of the search field, which is overwhelmed by environmental noise, resulting in low signal-to-noise ratio of the system and missing search phenomenon. Therefore, it is difficult to ensure the accuracy of search and stability of the system when the surveying and mapping device faces complex background or long-distance target. SUMMARY

[0005] The purpose of the present application is to provide a surveying and mapping device for automatically searching target, which solves the problem of missing search and inability to accurately and stably search and recognize the target when using an infrared light source for target detection due to uneven light beam energy distribution, poor vertical direction divergence control effect and low light energy matching degree at the receiving end.

[0006] To achieve the above purpose, the present application is realized by the following technical scheme: A surveying and mapping device for automatically searching target, comprising a base, characterized in that a surveying and mapping device is arranged on the top of the base, a search mechanism is arranged on the top of the surveying and mapping device, and a rotating mechanism is arranged on the top of the base. The search mechanism comprises a support block fixedly connected to the top front side of the surveying device, a semiconductor laser installed on the left side of the support block, a transmitting lens fixedly connected to the right side of the support block, a fixed plate fixedly connected to the top right side of the surveying device, a transmitting cylindrical mirror fixedly connected to the front side of the outer wall of the fixed plate, a mounting shell fixedly connected to the top rear side of the surveying device, a linear array sensor fixedly connected to the inside left end of the mounting shell, a receiving lens fixedly connected to the inside middle part of the mounting shell, and a receiving cylindrical mirror fixedly connected to the inside right end of the mounting shell.

[0007] Through the above technical scheme, the laser can be converted into a uniform fan-shaped line light source by the transmitting lens and the transmitting cylindrical mirror, the reflected light can be shaped and converged by the receiving cylindrical mirror and the receiving lens, the linear array sensor can collect high-quality light signals, and the target can be accurately searched and identified.

[0008] Preferably, the rotating mechanism comprises a mounting groove opened in the top of the base, a hollow column rotatably connected to the inside of the mounting groove, the top of the hollow column fixedly connected to the surveying device, a tooth ring fixedly connected to the inside top of the hollow column, and a gear set in the inside of the hollow column and engaged with the tooth ring.

[0009] Through the above technical scheme, the rotating mechanism can flexibly adjust and stably lock the orientation of the surveying device by the engagement of the gear and the tooth ring and the rotation of the hollow column.

[0010] Preferably, the rotating mechanism further comprises a handle fixedly connected to the bottom of the gear, a groove opened in the bottom of the base, and the bottom end of the handle penetrating through the base.

[0011] Through the above technical scheme, the gear can be pulled downward to disengage and the rotation can be adjusted conveniently.

[0012] Preferably, the rotating mechanism further comprises a first magnet piece fixedly connected to the top of the gear, and a second magnet piece fixedly connected to the inside top of the hollow column.

[0013] Through the above technical scheme, the gear can be automatically moved upward to reset and engage with the tooth ring by the attraction between the first magnet piece and the second magnet piece, and the adjustment can be automatically locked.

[0014] Preferably, the top of the base is fixedly connected with a fixed ring, and the upper side of the fixed ring is provided with angle markings.

[0015] Through the above technical scheme, the orientation adjustment of the surveying device can be provided with accurate angle reference.

[0016] Preferably, the output end of the semiconductor laser, the center of the emitting lens, and the center of the emitting cylindrical mirror are located on the same horizontal axis, and the emitting lens is located between the semiconductor laser and the emitting cylindrical mirror.

[0017] The above technical solution enables the emitted semiconductor laser beam to pass through the emitting lens and the emitting cylindrical mirror in sequence and correctly.

[0018] Preferably, the center of the receiving cylindrical mirror, the center of the receiving lens, and the center of the linear array sensor are located on the same horizontal axis, and the receiving lens is located between the receiving cylindrical mirror and the linear array sensor.

[0019] The above technical solution enables the reflected light beam to pass sequentially through the receiving cylindrical mirror and the receiving lens and then illuminate the linear array sensor.

[0020] Preferably, the gear is located below the gear ring, and the gear and the gear ring are coaxially arranged.

[0021] The above technical solution enables the gear to accurately mesh with the gear ring 43.

[0022] In summary, the present invention has at least one of the following beneficial technical effects: 1. This invention, through the combination of a transmitting lens and a transmitting cylindrical mirror, employs a combination of slow-axis collimation and fast-axis beam expansion to transform the elliptical Gaussian beam emitted by a semiconductor laser into a fan-shaped line light source with uniform energy distribution, covering a specified search angle. Simultaneously, the receiving cylindrical mirror and receiving lens shape and converge the reflected beam, enabling the linear array sensor to acquire high-quality light signals. This avoids the problems of uneven vertical divergence and low light energy utilization of infrared light sources in existing technologies, ensuring that the digital image recognition algorithm can accurately extract target features and achieving efficient and accurate automatic target search.

[0023] 2. This invention allows for rotational adjustment by pulling down the handle to unlock it. After releasing the handle, the attraction between the magnetic pieces causes the gears to automatically reset and engage, allowing for angle fixing without the need for tools. This not only provides fast adjustment but also makes the gear engagement locking method more reliable than traditional friction fixing. It effectively prevents the equipment from shifting due to external vibrations or accidental touches during the surveying process, ensuring the continuity of surveying work and the accuracy of data. Attached Figure Description

[0024] Figure 1 This is a perspective view of the present invention; Figure 2 This is a structural exploded view of the support block of the present invention; Figure 3 This is a partial structural breakdown diagram of the search mechanism of the present invention; Figure 4 It is a schematic view of the local structure of the application; Figure 5 It is a schematic view of the local structure of the rotating mechanism of the application; Figure 6 It is a schematic view of the local structure of the rotating mechanism of the application.

[0025] Wherein, 1, base; 2, search mechanism; 21, support block; 22, semiconductor laser; 23, emitting lens; 24, fixed plate; 25, emitting cylindrical mirror; 26, mounting shell; 27, linear array sensor; 28, receiving lens; 29, receiving cylindrical mirror; 3, mapping device; 4, rotating mechanism; 41, mounting groove; 42, hollow column; 43, gear ring; 44, gear; 45, handle; 46, groove; 47, magnet piece one; 48, magnet piece two; 49, fixed ring; 410, angle marking. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings Figure 1 - the drawings Figure 6 , the application is further explained in detail.

[0027] The application provides a kind of mapping device of automatic search target, including base 1, the top of base 1 is provided with mapping device 3, the top of mapping device 3 is provided with search mechanism 2, the top of base 1 is provided with rotating mechanism 4; Search mechanism 2 includes support block 21, support block 21 is fixedly connected to the top front side of mapping device 3, the left side of support block 21 is provided with semiconductor laser 22, semiconductor laser 22 can emit elliptical Gauss light beam, the right side of support block 21 is fixedly connected with emitting lens 23, and emitting lens 23 can convert elliptical Gauss light beam into parallel light beam, realizes slow axis collimation, the top right side of mapping device 3 is fixedly connected with fixed plate 24, the outer wall front side of fixed plate 24 is fixedly connected with emitting cylindrical mirror 25, and emitting cylindrical mirror 25 can one-way beam expansion and shaping to light beam, realizes fast axis expansion, the top rear side of mapping device 3 is fixedly connected with mounting shell 26, the inside left end of mounting shell 26 is fixedly connected with linear array sensor 27, and linear array sensor 27 can receive and collect optical signal and convert it into electrical signal, the inside middle part of mounting shell 26 is fixedly connected with receiving lens 28, the inside right end of mounting shell 26 is fixedly connected with receiving cylindrical mirror 29, and receiving lens 28 and receiving cylindrical mirror 29 can compress the reflected light beam; Specifically, in the automatic search operation using the surveying device, the semiconductor laser 22 emits an elliptical Gaussian beam after being powered on. The beam first enters the emission lens 23 and is refracted to become a parallel beam after being processed by the emission lens 23. Then the beam enters the emission cylindrical mirror 25 on the front side of the fixed plate 24. In the optical path design, the slow-axis collimation and fast-axis expansion are combined. The optical characteristics of the emission cylindrical mirror 25 are used to perform one-way expansion and shaping on the beam, so that the original elliptical spot is converted into a fan-shaped line light source with uniform energy distribution, thereby covering the preset search field of view. When the fan-shaped line light source scans to the cooperative target and reflects, the reflected beam returns along the optical path, successively passes through the receiving cylindrical mirror 29 and the receiving lens 28 in the mounting shell 26. The receiving cylindrical mirror 29 compresses the echo signal, and the receiving lens 28 converges the beam and forms an image on the light-sensitive surface of the linear array sensor 27. The linear array sensor 27 converts the collected optical signal into an electrical signal, which is transmitted to the digital image recognition module after being processed by the amplification circuit. The algorithm extracts the target features in the signal and confirms the target position. Finally, the recognition data is fed back to the surveying device 3, and the automatic search process is completed. The homogenization and divergence control of the beam are realized by the cylindrical mirror group, which ensures the signal-to-noise ratio and system stability of the detection.

[0028] Please refer to Figure 4 , Figure 5 and Figure 6 , the rotating mechanism 4 includes a mounting groove 41, which is provided on the top of the base 1. The inner side of the mounting groove 41 is rotatably connected with a hollow column 42. The top of the hollow column 42 is fixedly connected with the surveying device 3. The hollow column 42 rotates together with the surveying device 3. The inner top of the hollow column 42 is fixedly connected with a tooth ring 43. The inner side of the hollow column 42 is provided with a gear 44, which is engaged with the tooth ring 43. When the gear 44 is clamped into the tooth ring 43, the tooth ring 43 can be fixed. The rotating mechanism 4 further includes a handle 45, which is fixedly connected to the bottom of the gear 44. A recess 46 is provided on the bottom of the base 1. The bottom end of the handle 45 penetrates the base 1. Pulling the handle 45 downward can make the gear 44 disengage from the tooth ring 43. The rotating mechanism 4 further includes a magnet piece one 47, which is fixedly connected to the top of the gear 44. The inner top of the hollow column 42 is fixedly connected with a magnet piece two 48. Through the attraction between the magnet piece two 48 and the magnet piece one 47, the gear 44 can be clamped into the tooth ring 43 again. Specifically, when the monitoring direction of the surveying device 3 needs to be adjusted, the handle 45 is pulled down, the handle 45 drives the gear 44 to move vertically downward inside the hollow column 42, so that the gear teeth of the gear 44 are disengaged from the tooth ring 43 on the inner wall of the hollow column 42, thereby releasing the locking of the rotation angle of the hollow column 42, then the surveying device 3 is rotated, the surveying device 3 drives the hollow column 42 to rotate synchronously in the mounting groove 41 until the surveying device 3 faces the target surveying area, the handle 45 is released after the angle adjustment is completed, the magnet piece two 48 on the inner top of the hollow column 42 generates a magnetic attraction force on the magnet piece one 47 fixed on the top of the gear 44, drives the gear 44 and the handle 45 to move upward to reset, promotes the gear 44 to reinsert into the tooth ring 43 and engage, and the hollow column 42 and the surveying device 3 can be fixed at the current angle, the adjustment and locking of the direction are completed.

[0029] Please refer to Figure 1 , Figure 4 and Figure 6 , the top of the base 1 is fixedly connected with a fixing ring 49, and the upper side of the fixing ring 49 is provided with an angle scale 410. Specifically, the angle scale 410 provided on the fixing ring 49 can more accurately adjust the direction of the surveying device 3.

[0030] Working principle: in the process of using the surveying device, when the target needs to be searched automatically, the semiconductor laser 22 can emit an elliptical Gaussian light beam, the light beam can be converted into a parallel light beam through the emission lens 23, and the parallel light beam can be converted into a linear light source through the emission cylindrical mirror 25. After the elliptical Gaussian light beam emitted by the light source is collimated and expanded, a uniformly distributed fan-shaped linear light source is formed, covering a specified search angle. When the light beam hits the target, it will be reflected back. The reflected light beam successively passes through the receiving cylindrical mirror 29 and the receiving lens 28 and is irradiated onto the linear array sensor 27. The linear array sensor 27 can collect the light signal, and after photoelectric conversion and amplification, the target features are extracted by a digital image recognition algorithm, the precise identification of the cooperative target is realized, the identification result is fed back to the surveying device 3, and the effect of automatically searching the target is achieved. The combination of slow-axis collimation and fast-axis expansion realizes a linear light spot with high uniformity, and the use of the cylindrical mirror group completes the homogenization and divergence control of the light beam, ensuring the stability and reliability of the system. And when it is needed to adjust the orientation of the surveying equipment 3, pull down the handle 45, the handle 45 will drive the gear 44 to move downwards, so that the gear 44 is disengaged from the meshing with the gear ring 43, and then the gear 44 is released from the limiting locking to the gear ring 43, and then the surveying equipment 3 is rotated, the hollow column 42 is rotated with the surveying equipment 3, so that the orientation of the surveying equipment 3 can be adjusted, and different areas can be surveyed, which is convenient to use, and after the adjustment is completed, the handle 45 is released, at this time the magnet piece two 48 on the inside top of the hollow column 42 will attract the magnet piece one 47, the magnet piece one 47 will drive the gear 44 to move upwards, so that the gear 44 is re-engaged with the gear ring 43, and then the position of the hollow column 42 is fixed, so that the orientation of the surveying equipment 3 can be more conveniently and quickly adjusted, and after the adjustment is completed, it is firmly locked.

[0031] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A mapping device for automatically searching for targets, comprising a base (1), characterized in that, A surveying device (3) is provided on the top of the base (1), a search mechanism (2) is provided on the top of the surveying device (3), and a rotating mechanism (4) is provided on the top of the base (1). The search mechanism (2) includes a support block (21), which is fixedly connected to the top front side of the surveying equipment (3). A semiconductor laser (22) is installed on the left side of the support block (21), and an emitting lens (23) is fixedly connected to the right side of the support block (21). A fixing plate (24) is fixedly connected to the top right side of the surveying equipment (3). An emitting cylindrical mirror (25) is fixedly connected to the front side of the outer wall of the fixing plate (24). A mounting shell (26) is fixedly connected to the top rear side of the surveying equipment (3). A linear array sensor (27) is fixedly connected to the left end of the inner side of the mounting shell (26). A receiving lens (28) is fixedly connected to the middle part of the inner side of the mounting shell (26). A receiving cylindrical mirror (29) is fixedly connected to the right end of the inner side of the mounting shell (26).

2. The mapping device for automatically searching for targets according to claim 1, characterized in that, The rotating mechanism (4) includes a mounting groove (41) which is located on the top of the base (1). A hollow column (42) is rotatably connected to the inner side of the mounting groove (41). The top of the hollow column (42) is fixedly connected to the surveying equipment (3). A gear ring (43) is fixedly connected to the top of the inner side of the hollow column (42). A gear (44) is provided on the inner side of the hollow column (42). The gear (44) meshes with the gear ring (43).

3. The mapping device for automatically searching for targets according to claim 2, characterized in that, The rotating mechanism (4) also includes a handle (45), which is fixedly connected to the bottom of the gear (44). The bottom of the base (1) is provided with a groove (46), and the bottom end of the handle (45) passes through the base (1).

4. The mapping device for automatically searching for targets according to claim 3, characterized in that, The rotating mechanism (4) also includes a magnet plate one (47), which is fixedly connected to the top of the gear (44), and a magnet plate two (48) is fixedly connected to the top of the inner side of the hollow column (42).

5. The mapping device for automatically searching for targets according to claim 3, characterized in that, A fixing ring (49) is fixedly connected to the top of the base (1), and an angle mark (410) is provided on the upper side of the fixing ring (49).

6. The mapping device for automatically searching for targets according to claim 3, characterized in that, The output end of the semiconductor laser (22), the center of the emitting lens (23) and the center of the emitting cylindrical mirror (25) are located on the same horizontal axis, and the emitting lens (23) is located between the semiconductor laser (22) and the emitting cylindrical mirror (25).

7. The mapping device for automatically searching for targets according to claim 3, characterized in that, The center of the receiving cylindrical mirror (29), the center of the receiving lens (28), and the center of the linear array sensor (27) are located on the same horizontal axis, and the receiving lens (28) is located between the receiving cylindrical mirror (29) and the linear array sensor (27).

8. The mapping device for automatically searching for targets according to claim 3, characterized in that, The gear (44) is located below the gear ring (43), and the gear (44) and the gear ring (43) are coaxially arranged.

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