A three-dimensional lidar detection device for grain quantity detection in grain depots

Abstract

This utility model discloses a three-dimensional lidar detection device for grain quantity detection in grain depots, including a lidar module, a power supply module, a control module, a data processing module, and a camera module. The lidar module includes a lidar housing assembly, a housing body, a rotating shaft, a horizontal rotating bearing, and a rotating connector. A bearing seat is provided inside the housing body. The inner ring of the rotating connector is fixedly connected to the rotating shaft, and the outer ring of the rotating connector is fixedly connected to the lidar housing assembly. The lidar housing assembly rotates to perform multi-angle scanning and measurement on the surface of the grain pile. A power supply housing is fixedly installed on the left side of the housing body, and a main control housing is fixedly installed on the right side of the housing body. The power supply housing also contains a lidar power supply, which provides a stable operating voltage for the lidar module. In summary, this utility model has the advantages of wide detection range, strong environmental adaptability, high measurement accuracy, and convenient maintenance.

Description

Technical Field

[0001] This utility model belongs to the technical field of grain testing equipment, specifically relating to a three-dimensional lidar detection device for detecting the quantity of grain in grain depots. Background Technology

[0002] With the improvement of the grain reserve system and the continuous expansion of storage scale, accurate detection of grain quantity in grain depots has become a key link in grain management and safety monitoring. Traditional grain depot inventory methods mostly rely on manual measurement, rod and ruler sampling, or simple ultrasonic ranging. These methods are not only cumbersome and labor-intensive, but also subject to factors such as irregular grain pile surfaces, temperature and humidity fluctuations, and dusty environments, resulting in poor measurement accuracy and repeatability, making it difficult to achieve efficient and continuous detection. With the rapid development of lidar technology in recent years, its application in grain storage monitoring has gradually increased, but it still cannot meet the current needs.

[0003] Most current grain depot radar detection equipment adopts a fixed-installation single-radar structure, which has a limited scanning range and makes it difficult to achieve full coverage of the grain pile surface, easily creating detection blind spots. At the same time, the radar module, control circuit and power supply system are usually housed in the same housing, resulting in significant electromagnetic interference and heat dissipation problems, which seriously affect the measurement stability and service life of the equipment. In addition, existing devices lack visual monitoring functions, making it impossible to intuitively compare and verify the radar-acquired data, and maintenance is inconvenient. The overall sealing and protection performance of the corresponding equipment is also weak, and performance degradation or failure is easily caused in the high dust and high humidity environment of grain depots. These problems make it difficult for existing technologies to meet the actual needs of modern grain depots for high-precision and intelligent quantity detection.

[0004] Therefore, there is an urgent need for a three-dimensional lidar detection device for grain quantity detection in grain depots, which can solve the problems of limited scanning angle, severe electromagnetic interference, insufficient heat dissipation and dustproof performance, and single monitoring method in existing technologies. Utility Model Content

[0005] In view of this, this utility model proposes a three-dimensional lidar detection device for grain quantity detection in grain depots. It is applied to the field of grain detection equipment technology. By introducing a rotating lidar module, a partitioned power supply and control structure, and a synchronously working visualization camera module, it solves the existing technical problems of limited scanning angle, severe electromagnetic interference, insufficient heat dissipation and dustproof performance, and single monitoring method, and realizes automated detection of grain pile quantity.

[0006] To achieve the above-mentioned technical objectives, the specific technical solution adopted by this utility model is as follows: A three-dimensional lidar detection device for grain quantity detection in grain depots includes a lidar module, a power supply module, a control module, a data processing module, and a camera module. The lidar module comprises a lidar housing assembly, a housing body, a rotating shaft, horizontal rotating bearings, and a rotating connector. Bearing seats are located inside the housing body. Both ends of the rotating shaft are mounted in corresponding bearing seats on the housing body via horizontal rotating bearings. The inner ring of the rotating connector is fixedly connected to the rotating shaft, and the outer ring is fixedly connected to the lidar housing assembly. The lidar housing assembly rotates to perform multi-angle scanning measurements on the grain pile surface. A power supply housing is fixedly installed on the left side of the housing body, and a main control housing is fixedly installed on the right side of the housing body. The power supply housing also houses the lidar power supply, which provides a stable operating voltage for the lidar module. The main control housing contains the main control board and the lidar control board. The power supply housing and the main control housing are connected and fixed to the flanges on both sides of the housing body by screws. The three together form a symmetrically arranged partitioned structure. The power supply side and the control side are independent of each other and do not interfere with each other. The camera module includes a camera housing assembly and a camera module. The camera housing assembly is installed on top of the housing body and is arranged in the same direction as the lidar housing assembly. The camera module is fixedly installed inside the camera housing assembly, and its lens direction is parallel to the optical axis direction of the lidar module, realizing the synchronization of visual monitoring and laser detection.

[0007] Furthermore, a lidar body is installed inside the lidar housing assembly, and the lidar body is fixed to a support plate. The support plate is fixed to the inner wall of the lidar housing assembly by screws.

[0008] Furthermore, the power module is mounted on a mounting base at the bottom of the power supply housing. The output end of the power module is connected to the LiDAR power supply and the main control board. A cable outlet hole is provided at the bottom of the power supply housing, and a dustproof and waterproof sealing ring is provided at the cable outlet hole to enhance the protective sealing performance of the cable connection. The power module includes a power conversion module, which converts the input power into the working voltage adapted to the LiDAR and control system.

[0009] Furthermore, the power module and the control module are respectively encapsulated in the power supply housing and the main control housing. The two are connected by signal lines and power lines, forming a left-right partitioned layout structure, thereby forming electrical circuits through physical isolation, reducing electromagnetic interference and facilitating modular maintenance.

[0010] Furthermore, the power supply casing and the main control casing are equipped with independent heat dissipation channels. The heat dissipation channel of the power supply casing is connected to the cable outlet at the bottom of the power module, and the heat dissipation channel of the main control casing is connected to the exhaust hole at the top of the casing. The heat dissipation airflow flows along the channels to form a continuous airflow channel.

[0011] Furthermore, a sealing gasket is provided at the joint between the housing body and the power supply housing and the main control housing, and a longitudinal heat dissipation groove is formed on the outer surface of the housing. The sealing gasket and the heat dissipation groove together constitute a dustproof and moisture-proof structure.

[0012] By adopting the above technical solution, this utility model can also bring the following beneficial effects: 1. This utility model discloses a three-dimensional lidar detection device for grain quantity detection in grain depots. By adopting a rotating lidar module, it realizes multi-angle scanning measurement of the grain pile surface. The lidar module consists of a lidar shell assembly, a shell body, a rotating shaft, a horizontal rotating bearing, and a rotating connecting part. It has a stable structure and smooth transmission, and can achieve all-round detection without moving the main equipment. It significantly reduces the measurement blind zone, improves the accuracy of three-dimensional modeling and quantity detection, and has the advantages of comprehensive detection and high measurement accuracy.

[0013] 2. This utility model discloses a three-dimensional lidar detection device for grain quantity detection in grain depots. It achieves electrical circuit separation by adopting a partitioned modular layout structure. The power supply shell and the main control shell are set on both sides of the main body, and the power module and the control module are independently packaged and connected by signal lines and power lines to form a symmetrical layout. This effectively reduces the risk of electromagnetic interference, enhances the operational stability between modules, and facilitates maintenance and replacement. Independent heat dissipation channels are set inside the power supply shell and the main control shell. The airflow forms a continuous heat dissipation path along the channels. Combined with the longitudinal heat dissipation grooves on the shell surface, heat can be quickly conducted and the internal temperature can be stabilized. It has the advantages of reasonable structure, excellent heat dissipation performance and high reliability.

[0014] 3. This utility model discloses a three-dimensional lidar detection device for grain quantity detection in grain depots. By setting sealing gaskets and dustproof and waterproof sealing rings on the outer surface of the shell and at the joints, the overall structure is compact and has strong sealing performance. It can operate stably for a long time in the high dust and high humidity environment of the grain depot. The camera module consists of a camera shell assembly and a camera module. The lens direction is parallel to the optical axis of the lidar module, realizing the synchronization of visual monitoring and laser detection. It can compare the radar data in real time, enhancing the intuitiveness and safety of the detection. The whole device integrates detection, heat dissipation, protection and visual monitoring, and has the advantages of strong environmental adaptability, convenient maintenance and reliable operation. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of a three-dimensional lidar detection device for detecting the quantity of grain in a grain depot, as mentioned in this utility model. Figure 2 For this embodiment Figure 1 A side sectional view; Figure 3 This is a schematic diagram showing the overall installation and testing of the grain depot in this embodiment; In the diagram: 1. LiDAR housing assembly; 2. Housing body; 3. Power supply housing; 4. Rotating shaft; 5. Camera housing assembly; 6. LiDAR body; 7. LiDAR control board; 8. LiDAR power supply; 9. Main control housing; 10. Power module; 11. Horizontal rotating bearing; 12. Rotating connector; 13. Power conversion module; 14. Camera module; 15. Main control board. Detailed Implementation

[0017] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0018] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. This utility model can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this invention, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using other structures and / or functionalities besides one or more of the aspects set forth herein.

[0020] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. The drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0021] Furthermore, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that the described aspects can be practiced without these specific details. Example 1

[0022] like Figures 1 to 3 As shown, this utility model discloses a three-dimensional lidar detection device for grain quantity detection in grain depots, including a lidar module, a power supply module 10, a control module, a data processing module, and a camera module. The overall structure is based on a shell body 2 as the main frame. Power supply shells 3 and main control shells 9 are installed on both sides of the shell body 2, and a camera shell assembly 5 is installed on the top of the shell body 2, forming a compact and clearly laid-out modular detection unit. The lidar module includes a lidar shell assembly 1, a shell body 2, a rotating shaft 4, a horizontal rotating bearing 11, and a rotating connector 12. The shell body 2 has a bearing seat inside. The two ends of the rotating shaft 4 are installed in the corresponding bearing seats through the horizontal rotating bearings 11. The inner ring of the rotating connector 12 is fixedly connected to the rotating shaft 4, and the outer ring is fixedly connected to the lidar shell assembly 1. The lidar body 6 is installed inside the lidar shell assembly 1 and fixed to a support plate. The support plate is fixed to the inner wall of the lidar shell assembly 1 by screws. The rotating connector 12 drives the lidar shell assembly 1 to rotate, realizing multi-angle scanning measurement of the grain pile surface and obtaining complete three-dimensional morphological data.

[0023] The power module 10 is mounted on the bottom mounting base of the power housing 3. Inside the power module 10 is a power conversion module 13, which converts the external input power into a working voltage suitable for the LiDAR and control system. The output of the power module 10 connects to the LiDAR power supply 8 and the main control board 15, providing stable power to the entire system. The bottom of the power housing 3 has a cable outlet hole with a dustproof and waterproof sealing ring to improve the sealing performance of the cable connection. The control module is installed inside the main control housing 9, including the main control board 15 and the LiDAR control board 7. Both are connected to the power module 10 via signal lines. The power module 10 and the control module are respectively encapsulated in the power housing 3 and the main control housing 9. The signal lines and power lines run through both sides, forming a left-right partition layout. Physical isolation achieves electrical circuit separation, reduces electromagnetic interference, and improves operational stability. The power housing 3 and the main control housing 9 have independent heat dissipation channels. The heat dissipation channel of the power housing 3 connects to the bottom outlet of the power module 10, and the heat dissipation channel of the main control housing 9 connects to the exhaust port at the top of the housing body 2. Airflow along the channels forms a continuous circulation channel, and longitudinal heat dissipation grooves assist in heat conduction, maintaining stable internal temperature.

[0024] A sealing gasket is provided at the joint between the shell body 2 and the power supply shell 3 and the main control shell 9. The shell body 2, the power supply shell 3 and the main control shell 9 are all made of aluminum alloy and have been treated with anti-corrosion spraying. The sealing gasket and the heat dissipation groove together form a dustproof and moisture-proof structure to ensure that the device can operate for a long time in a grain depot environment with high dust and high humidity. The camera module includes a camera shell assembly 5 and a camera module 14. The camera shell assembly 5 is installed on top of the shell body 2, and the camera module 14 is fixed inside the camera shell assembly 5. The lens direction is arranged parallel to the optical axis direction of the lidar module. While the lidar rotates and scans, the camera module 14 simultaneously acquires the visual image.

[0025] During operation, this utility model controls the rotating connector 12 via the main control board 15 to rotate the lidar housing assembly 1, enabling multi-angle scanning of the grain pile surface. The lidar module and camera module simultaneously collect detection data and image information. Finally, the data processing module performs three-dimensional modeling and quantity calculation on the collected data and transmits the results to the host computer terminal, achieving real-time monitoring and data comparison of grain storage. In summary, this utility model features a compact structure, reasonable layout, and independent modules. It integrates rotating lidar scanning, zoned power supply control, independent heat dissipation protection, and visual detection functions, offering advantages such as wide detection range, strong environmental adaptability, high measurement accuracy, and convenient maintenance.

[0026] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A three-dimensional laser radar detection device for detecting the quantity of grain in a grain depot, characterized in that: The system includes a lidar module, a power supply module, a control module, a data processing module, and a camera module. The lidar module comprises a lidar housing assembly, a housing body, a rotating shaft, a horizontal rotating bearing, and a rotating connector. The housing body has bearing seats inside. Both ends of the rotating shaft are mounted in corresponding bearing seats on the housing body via horizontal rotating bearings. The inner ring of the rotating connector is fixedly connected to the rotating shaft, and the outer ring is fixedly connected to the lidar housing assembly. The lidar housing assembly rotates to perform multi-angle scanning measurements on the grain pile surface. A power supply housing is fixedly installed on the left side of the housing body, and a main control housing is fixedly installed on the right side. The power supply housing also includes a lidar housing... The power supply for the LiDAR module provides a stable operating voltage. The main control housing houses the main control board and the LiDAR control board. The power supply housing and the main control housing are connected and fixed to the flanges on both sides of the housing body via screws. These three components together form a symmetrically arranged partitioned structure. The power supply side and the control side are independent and do not interfere with each other. The camera module includes a camera housing assembly and a camera module. The camera housing assembly is mounted on top of the housing body and arranged in the same direction as the LiDAR housing assembly. The camera module is fixedly installed inside the camera housing assembly, with its lens direction parallel to the optical axis of the LiDAR module, achieving synchronous visual monitoring and laser detection. ​ 2. The three-dimensional laser radar detection device for detecting the quantity of grain in a granary according to claim 1, characterized in that: The lidar housing assembly contains a lidar body, which is fixed to a support plate. The support plate is fixed to the inner wall of the lidar housing assembly by screws.

3. The three-dimensional laser radar detection device for detecting the quantity of grain in a granary according to claim 2, characterized in that: The power module is mounted on a mounting base at the bottom of the power supply housing. The output end of the power module is connected to the LiDAR power supply and the main control board. A cable outlet hole is provided at the bottom of the power supply housing, and a dustproof and waterproof sealing ring is provided at the cable outlet hole to enhance the protective sealing performance of the cable connection. The power module includes a power conversion module, which converts the input power into the working voltage adapted to the LiDAR and control system.

4. The three-dimensional laser radar detection device for detecting the quantity of grain in a granary according to claim 3, characterized in that: The power module and the control module are respectively encapsulated in the power supply housing and the main control housing. They are connected by signal lines and power lines, forming a left-right partitioned layout structure. This achieves electrical branching through physical isolation, reduces electromagnetic interference, and facilitates modular maintenance.

5. The three-dimensional laser radar detection device for detecting the quantity of grain in a granary according to claim 4, characterized in that: The power supply housing and the main control housing are equipped with independent heat dissipation channels. The heat dissipation channel of the power supply housing is connected to the outlet at the bottom of the power module, and the heat dissipation channel of the main control housing is connected to the exhaust hole at the top of the housing body. The heat dissipation airflow flows along the channel to form a continuous airflow channel.

6. The three-dimensional laser radar detection device for detecting the quantity of grain in a granary according to claim 5, characterized in that: A sealing gasket is provided at the joint between the housing body and the power supply housing and the main control housing. A longitudinal heat dissipation groove is formed on the outer surface of the housing. The sealing gasket and the heat dissipation groove together constitute a dustproof and moisture-proof structure.

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