Intelligent helmet for operation under mine and control method

Abstract

The invention provides an intelligent helmet for underground operation. The intelligent helmet comprises a helmet body, an image source module, a control module and a waveguide lens assembly. An image source module is arranged on the front face of the helmet, and a control module is arranged on the back face of the helmet and used for modulating image light beams and switching light-emitting modes including an AR light-emitting mode and a projection light-emitting mode. The waveguide lens assembly is detachably fixed to the helmet body and used for near-eye imaging in the AR light emitting mode. According to the intelligent helmet, virtual image information can be directly projected on remote targets such as rocks and ores in a projection light-emitting mode without depending on a network, and information sharing among operators is realized. According to the intelligent helmet, the problem that the AR application cannot share the virtual guidance image in time due to network transmission blocking in the underground operation is solved. Therefore, the operation efficiency is improved, the operation safety is enhanced, and operation errors and risks caused by network transmission blocking are avoided.

Description

Technical Field

[0001] This application relates to the field of display technology, and particularly to an intelligent helmet for underground operations and a control method therefor. Background Art

[0002] In the field of underground operations, with the continuous development of intelligent technology, Augmented Reality (AR) technology has gradually been applied. Currently, many units have started to equip underground workers with devices such as AR glasses. With the functions of AR glasses, workers can view the underground operation environment and virtual guidance images in real time. These virtual guidance images can provide key information such as equipment operation tips, path navigation, and warning of dangerous areas for workers, greatly improving work efficiency and safety, and reducing the risk of operation errors caused by complex environments and insufficient information.

[0003] However, existing AR applications for underground operations have obvious defects. When workers need to exchange each other's virtual image information, it usually relies on network transmission. However, in the underground environment, the signal conditions are poor, and network transmission is extremely vulnerable to obstruction. On the one hand, the underground terrain is complex, with a large number of obstacles such as rocks and ores, which will interfere with the propagation of wireless signals, resulting in signal strength attenuation and unstable transmission. On the other hand, the underground space is relatively enclosed, with a limited signal coverage area, and signal blind spots are likely to occur.

[0004] Due to the obstruction of network transmission, workers cannot share virtual guidance images in a timely and accurate manner, which will cause serious problems in some scenarios that require collaborative operations. For example, during complex equipment maintenance or roadway tunneling operations, it is difficult for workers at different positions to share key operation guidance information in real time, which may lead to delays in the operation progress, cooperation mistakes, and even safety accidents. Summary of the Invention

[0005] The purpose of this application is to provide an intelligent helmet for underground operations and a control method therefor, which can improve the above problems.

[0006] The embodiments of this application are implemented as follows:

[0007] This application provides an intelligent helmet for underground operations, which includes: a helmet main body, an image source module, a control module, and a waveguide lens assembly;

[0008] The helmet main body includes a front side that is on the same side as the human face when worn and a back side that is disposed opposite to the front side. The image source module is disposed on the front side, and the control module is disposed on the back side;

[0009] The control module is used to modulate the light source of the image source module according to the virtual screen to be displayed. The image source module is used to scan and output the image light beam modulated by the control module and switch the light output mode according to the control instruction of the control module. The light output mode includes an AR light output mode and a projection light output mode;

[0010] The waveguide lens assembly includes a waveguide lens and a lens frame surrounding the waveguide lens. The lens frame is fixed to the helmet body in a detachable manner; when the AR light output mode is adopted by the image source module, the waveguide lens performs near-eye imaging on the image light beam generated by the AR light output mode.

[0011] It can be understood that the user can send a switching operation to the control module to select the light output mode. When in the AR light output mode, the image source module will output collimated light and introduce it into the light input area of the waveguide lens, and perform near-eye imaging through the waveguide lens, so as to facilitate the user to view the virtual guidance image; when in the projection light output mode, the user can cooperate to remove the waveguide lens assembly, and the image source module will output a projection light beam onto distant targets such as rocks and ores for direct projection imaging. Without relying on the network, virtual image information can also be shared with other users in a timely manner.

[0012] It can be understood that the present application proposes an intelligent helmet for underground operations, including: a helmet body, an image source module, a control module, and a waveguide lens assembly. The image source module is arranged on the front of the helmet, and the control module is arranged on the back, which is used to modulate the image light beam and switch the light output mode, including an AR light output mode and a projection light output mode. The waveguide lens assembly is detachably fixed to the helmet body and is used for near-eye imaging in the AR light output mode. Without relying on the network, this intelligent helmet can directly project virtual image information onto distant targets such as rocks and ores through the projection light output mode, realizing information sharing among operators. This intelligent helmet solves the problem that AR applications in underground operations cannot share virtual guidance images in a timely manner due to network transmission obstacles. This not only improves work efficiency but also enhances work safety, avoiding operation errors and risks caused by network transmission obstacles.

[0013] In an alternative embodiment of the present application, the image source module includes an image source outer frame, a fixing member, a piezoelectric actuator, an optical fiber, a first lens assembly, and a second lens assembly; the tail end of the piezoelectric actuator is fixed to the image source outer frame through the fixing member, the optical fiber is fixed to the head end of the piezoelectric actuator and extends out of the head end; at least two driving electrodes that are electrically connected to the control module and used to drive the piezoelectric actuator to vibrate are arranged on the surface of the piezoelectric actuator. When the piezoelectric actuator vibrates, it drives the scanning section of the optical fiber extending out of the head section to perform scanning swing, so as to output an image light beam; the first lens assembly is used to move to the light path of the light emitted by the optical fiber when the AR light output mode is adopted, and collimate the image light beam emitted by the optical fiber and introduce it into the light incident area of the waveguide lens; the second lens assembly is used to move to the light path of the light emitted by the optical fiber when the projection light output mode is adopted, and project the image light beam emitted by the optical fiber onto the target object.

[0014] In an alternative embodiment of the present application, the first lens assembly includes a first motor, a first lens frame, and a first lens group; the first lens frame includes a first strip portion and a first annular portion, the first lens group is embedded in the first annular portion, one end of the first strip portion is fixed with the first annular portion, and the other end of the first strip portion is rotatably arranged on the fixing member; the first motor is electrically connected to the control module and is used to drive the first strip portion to rotate relative to the fixing member along a first axis. When the first strip portion rotates to a first position, the first lens group in the first annular portion is on the light path of the light emitted by the optical fiber, and the first lens group projects the image light beam emitted by the optical fiber onto the target object; when the first strip portion rotates to a second position, the first lens group in the first annular portion leaves the light path of the light emitted by the optical fiber.

[0015] In an alternative embodiment of the present application, the second lens assembly includes a second motor, a second lens frame, and a second lens group; the second lens frame includes a second strip portion and a second annular portion, the length of the second strip portion is greater than the length of the first strip portion, the second lens group is embedded in the second annular portion, one end of the second strip portion is fixed with the second annular portion, and the other end of the second strip portion is rotatably arranged on the fixing member; the second motor is electrically connected to the control module and is used to drive the second strip portion to rotate relative to the fixing member along a second axis. When the second strip portion rotates to a third position, the second lens group in the second annular portion is on the light path of the light emitted by the optical fiber, and the second lens group collimates the image light beam emitted by the optical fiber and introduces it into the light incident area of the waveguide lens; when the second strip portion rotates to a fourth position, the second lens group in the second annular portion leaves the light path of the light emitted by the optical fiber.

[0016] It can be understood that when the image source module is in the projection light output mode, the second motor drives the second strip portion to rotate to the fourth position, so that the second lens group leaves the light output optical path of the optical fiber. At the same time, the first motor drives the first strip portion to rotate to the first position, so that the first lens group projects the image light beam emitted from the optical fiber onto the target object. When the image source module is in the AR light output mode, the first motor drives the first strip portion to rotate to the second position, so that the first lens group leaves the light output optical path of the optical fiber. At the same time, the second motor drives the second strip portion to rotate to the third position, so that the second lens group collimates the image light beam emitted from the optical fiber and guides it into the light input area of the waveguide lens, and then near-eye imaging is performed through the waveguide lens.

[0017] It can be understood that for the intelligent helmet for underground operations provided in this application, the working principle of its image source module is that the vibration of the piezoelectric actuator drives the optical fiber to scan and swing, thereby outputting an image light beam. The tail end of the piezoelectric actuator is fixed to the outer frame of the image source, and the head end extends out of the optical fiber. The driving electrode arranged on its surface drives the piezoelectric actuator to vibrate, so that the optical fiber scanning section performs scanning and swinging. In the AR light output mode, the control module issues an instruction, and the first motor drives the first strip portion to rotate, so that the first lens group moves to the light output optical path of the optical fiber, collimates the image light beam emitted from the optical fiber and guides it into the light input area of the waveguide lens, and near-eye imaging is performed through the waveguide lens, and the operator can clearly see the virtual guiding image. In the projection light output mode, the second motor drives the second strip portion to rotate, so that the second lens group leaves the light output optical path of the optical fiber. At the same time, the first motor drives the first strip portion to rotate to another position, and the first lens group directly projects the image light beam emitted from the optical fiber onto distant targets such as rocks and ores, realizing the instant sharing of virtual image information. The technical effect is that it not only improves the efficiency of underground operations, but also significantly enhances the safety of operations. The operator can realize the real-time sharing of virtual image information through the intelligent helmet without relying on the network, avoiding operation errors and safety risks caused by blocked network transmission.

[0018] In an alternative embodiment of the present application, the first axis is perpendicular to the second axis. It can be understood that the design of the first axis perpendicular to the second axis enables the first lens assembly and the second lens assembly to rotate to the specified positions independently and without interference when switching the light output mode. This ensures the accurate projection of the image light beam in both modes.

[0019] In an alternative embodiment of the present application, the waveguide lens includes the light input area and the light output area; a coupling grating is arranged on the light input area for coupling the beam collimated by the first lens assembly into the waveguide lens for total reflection transmission; a coupling-out grating is arranged on the light output area for coupling out the beam totally reflected in the waveguide lens in the direction of the human eye.

[0020] In an alternative embodiment of the present application, a first magnet is provided on the front of the helmet body, and a second magnet is provided on the spectacle frame. The second magnet has a magnetic property opposite to that of the first magnet, so that the spectacle frame is detachably fixed to the helmet body by magnetic attraction.

[0021] In an alternative embodiment of the present application, a third magnet is further provided on the front of the helmet body for attracting a searchlight embedded with a fourth magnet. The third magnet has a magnetic property opposite to that of the fourth magnet. It can be understood that when the user does not need to view the virtual guidance image, the waveguide lens assembly can be removed and the searchlight can be worn.

[0022] In an alternative embodiment of the present application, the control module includes a processor, a light source modulation circuit, a light source assembly, a scanning drive circuit, and a mode control circuit; the light source modulation circuit, the scanning drive circuit, and the mode control circuit are all electrically connected to the processor; the scanning drive circuit is used to drive the scanning parameters of the image source module under the control of the processor; the mode control circuit is used to switch the light output mode of the image source module under the control of the processor; the light source assembly includes at least one set of color laser assemblies, and each set of color laser assemblies includes at least one red laser, at least one green laser, and at least one blue laser. The light source modulation circuit is used to receive the virtual picture to be displayed transmitted by the processor and modulate the output light intensity of each laser according to the virtual picture to be displayed.

[0023] It can be understood that the processor, as the core, is electrically connected to the light source modulation circuit, the scanning drive circuit, and the mode control circuit respectively and controls them. The scanning drive circuit adjusts the scanning parameters of the image source module under the control of the processor to ensure clear and stable images. The mode control circuit is responsible for switching the light output mode of the image source module, such as the AR or projection mode. The light source modulation circuit receives the virtual picture information to be displayed transmitted by the processor and modulates the output light intensity of each laser in the color laser assembly according to the picture content, so as to generate a color image beam corresponding to the virtual picture, and finally project and display it through the image source module.

[0024] In an alternative embodiment of the present application, the light source assembly includes a first set of color laser assemblies and a second set of color laser assemblies. The light source modulation circuit modulates the output light intensity of each laser in the first set of color laser assemblies in the AR light output mode and modulates the output light intensity of each laser in the second set of color laser assemblies in the projection light output mode. The maximum output light intensity value of each laser in the second set of color laser assemblies is greater than the maximum output light intensity value of each laser in the first set of color laser assemblies.

[0025] It can be understood that in the AR light output mode, the light source modulation circuit modulates the output light intensity of the first set of color laser components, which is suitable for virtual image display in a short distance and a small range; while in the projection light output mode, the second set of color laser components is modulated, and the maximum output light intensity value of its laser is larger, which is suitable for projection display in a long distance and a large range. This not only meets the requirements of the two different light output modes of AR and projection, but also improves the flexibility and practicality of the light source component, and at the same time ensures clear and bright image display effects in different modes.

[0026] In an optional embodiment of the present application, the intelligent helmet for underground operations includes a first image source module, a second image source module, and a third motor. The first image source module and the second image source module are spaced apart and disposed on the front surface of the helmet body. The first image source module is rotatably disposed on the helmet body. The third motor is electrically connected to the control module and is used to drive the first image source module to rotate relative to the helmet body in the projection light output mode, so that the projection screen of the first image source module coincides with or is spliced with the projection screen of the second image source module.

[0027] It can be understood that in the projection light output mode, if a projection screen with higher brightness is desired, the third motor drives the first image source module to rotate so that its projection screen completely coincides with the projection screen of the second image source module; if a projection screen with a larger size is desired, the third motor drives the first image source module to rotate so that its projection screen is spliced with the projection screen of the second image source module. The beneficial effect of this design is that by the collaborative work of the two image source modules, the size of the projection screen can be enlarged or the brightness of the projection screen can be increased, thereby enhancing the projection effect. At the same time, the rotatable design of the first image source module also increases the flexibility and adaptability of the helmet, enabling good projection effects to be obtained at different angles and positions, and improving the practicality and user experience of the intelligent helmet for underground operations.

[0028] Beneficial effects:

[0029] This application proposes an intelligent helmet for underground operations, including: a helmet body, an image source module, a control module, and a waveguide lens assembly. The image source module is arranged on the front of the helmet, and the control module is arranged on the back, which is used to modulate the image light beam and switch the light output mode, including the AR light output mode and the projection light output mode. The waveguide lens assembly is detachably fixed to the helmet body and is used for near-eye imaging in the AR light output mode. Without relying on the network, this intelligent helmet can directly project virtual image information onto distant targets such as rocks and ores through the projection light output mode, realizing information sharing among operators. This intelligent helmet solves the problem that AR applications in underground operations cannot share virtual guidance images in a timely manner due to network transmission obstacles. This not only improves work efficiency but also enhances work safety, avoiding operation errors and risks caused by network transmission obstacles.

[0030] To make the above objects, features, and advantages of this application more obvious and understandable, the following specifically cited optional embodiments are provided in conjunction with the accompanying drawings and are described in detail as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] To more clearly illustrate the technical solutions of the embodiments of this application, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.

[0032] Figure 1 is a front structural schematic diagram of an intelligent helmet for underground operations provided by this application;

[0033] Figure 2 is after removing the waveguide lens assembly Figure 1 shown front structural schematic diagram of the intelligent helmet;

[0034] Figure 3 is Figure 2 the AA' cross-sectional schematic diagram of;

[0035] Figure 4 is a structural schematic diagram of the image source module provided by this application;

[0036] Figure 5 is a structural schematic diagram of the control module provided by this application;

[0037] Figure 6 is a schematic diagram of the near-eye display optical path in the AR light output mode. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present application.

[0039] As Figures 1 to 3 shown, the present application provides an intelligent helmet for underground operations, which includes: a helmet body 10, a first image source module 20, a second image source module 30, a control module 40, and a waveguide lens assembly 50.

[0040] The helmet body 10 includes a front surface 11 on the same side as the human face when worn and a back surface 12 opposite to the front surface 11. The first image source module 20 and the second image source module 30 are arranged on the front surface 11, and the control module 40 is arranged on the back surface 12 to balance the weights of the two image source modules when worn. Among them, the control module 40 can be arranged in the rear shell 13 of the back surface 12 of the helmet body 10.

[0041] The control module 40 is used to modulate the light source of the image source module according to the virtual screen to be displayed. The image source module is used to scan and output the image light beam modulated by the control module 40 and switch the light output mode according to the control instruction of the control module 40. The light output mode includes an AR light output mode and a projection light output mode.

[0042] As Figure 1 shown, the waveguide lens assembly 50 includes a waveguide lens 51 and a lens frame 52 surrounding the waveguide lens 51. The lens frame 52 is fixed to the helmet body 10 in a detachable manner; when the image source module adopts the AR light output mode, the waveguide lens 51 performs near-eye imaging on the image light beam generated by the AR light output mode.

[0043] It can be understood that the user can send a switching operation to the control module 40 to select the light output mode. When in the AR light output mode, the image source module will output collimated light and introduce it into the light input area of the waveguide lens 51 for near-eye imaging by the waveguide lens 51, so as to facilitate the user to view the virtual guidance image; when in the projection light output mode, the user can cooperate to remove the waveguide lens assembly 50, and the image source module will output a projection light beam to directly project an image on distant targets such as rocks and ores, and can also share virtual image information with other users in a timely manner without relying on the network.

[0044] It can be understood that the present application proposes an intelligent helmet for underground operations, including: a helmet body 10, an image source module, a control module 40, and a waveguide lens assembly 50. An image source module is provided on the front 11 of the helmet, and a control module 40 is provided on the back 12 for modulating an image light beam and switching the light output mode, including an AR light output mode and a projection light output mode. The waveguide lens assembly 50 is detachably fixed to the helmet body 10 for near-eye imaging in the AR light output mode. Without relying on a network, this intelligent helmet can directly project virtual image information onto distant targets such as rocks and ores through the projection light output mode, realizing information sharing among operators. This intelligent helmet solves the problem that virtual guidance images cannot be shared in a timely manner due to blocked network transmission in AR applications during underground operations. This not only improves work efficiency but also enhances work safety, avoiding operation errors and risks caused by blocked network transmission.

[0045] In an optional embodiment of the present application, the structures and specifications of the first image source module 20 and the second image source module 30 are the same. Hereinafter, taking the first image source module 20 as an example, the structure of the image source module will be introduced. As Figure 4 shown, the first image source module 20 includes an image source outer frame 21, a fixing member 22, a piezoelectric actuator 23, an optical fiber 24, a first lens assembly 25, and a second lens assembly 26; the tail end of the piezoelectric actuator 23 is fixed to the image source outer frame 21 through the fixing member 22, and the optical fiber 24 is fixed to the head end of the piezoelectric actuator 23 and extends out of the head end; at least two driving electrodes (not shown in the figure) that are electrically connected to the control module 40 and used to drive the piezoelectric actuator 23 to vibrate are provided on the surface of the piezoelectric actuator 23. When the piezoelectric actuator 23 vibrates, it drives the scanning section of the optical fiber 24 extending out of the head section to scan and swing, thereby outputting an image light beam; the first lens assembly 25 is used to move to the light output optical path of the optical fiber 24 when the AR light output mode is adopted, and collimate the image light beam emitted by the optical fiber 24 and introduce it into the light input area of the waveguide lens 51; the second lens assembly 26 is used to move to the light output optical path of the optical fiber 24 when the projection light output mode is adopted, and project the image light beam emitted by the optical fiber 24 onto the target.

[0046] Continue to refer to Figure 4, the first lens assembly 25 includes a first motor 251, a first lens frame 252, and a first lens group 253; the first lens frame 252 includes a first strip portion 2521 and a first annular portion 2522, the first lens group 253 is embedded in the first annular portion 2522, one end of the first strip portion 2521 is fixed with the first annular portion 2522, and the other end of the first strip portion 2521 is rotatably disposed on the fixing member 22; the first motor 251 is electrically connected to the control module 40 and is configured to drive the first strip portion 2521 to rotate relative to the fixing member 22 along a first axis. When the first strip portion 2521 rotates to a first position, the first lens group 253 in the first annular portion 2522 is on the light-emitting optical path of the optical fiber 24, and the first lens group 253 projects the image light beam emitted from the optical fiber 24 onto the target object; when the first strip portion 2521 rotates to a second position, the first lens group 253 in the first annular portion 2522 leaves the light-emitting optical path of the optical fiber 24.

[0047] Continue to refer to Figure 4 , the second lens assembly 26 includes a second motor 261, a second lens frame 262, and a second lens group 263; the second lens frame 262 includes a second strip portion 2621 and a second strip portion 2622, the length of the second strip portion 2621 is greater than the length of the first strip portion 2521, the second lens group 263 is embedded in the second strip portion 2622, one end of the second strip portion 2621 is fixed with the second strip portion 2622, and the other end of the second strip portion 2621 is rotatably disposed on the fixing member 22; the second motor 261 is electrically connected to the control module 40 and is configured to drive the second strip portion 2621 to rotate relative to the fixing member 22 along a second axis. When the second strip portion 2621 rotates to a third position, the second lens group 263 in the second strip portion 2622 is on the light-emitting optical path of the optical fiber 24, and the second lens group 263 collimates the image light beam emitted from the optical fiber 24 and guides it into the light-incident area of the waveguide lens 51; when the second strip portion 2621 rotates to a fourth position, the second lens group 263 in the second strip portion 2622 leaves the light-emitting optical path of the optical fiber 24.

[0048] It can be understood that when the image source module is in the projection light output mode, the second motor 261 drives the second strip portion 2621 to rotate to the fourth position, so that the second lens group 263 leaves the light output optical path of the optical fiber 24. At the same time, the first motor 251 drives the first strip portion 2521 to rotate to the first position, so that the first lens group 253 projects the image light beam emitted from the optical fiber 24 onto the target object. When the image source module is in the AR light output mode, the first motor 251 drives the first strip portion 2521 to rotate to the second position, so that the first lens group 253 leaves the light output optical path of the optical fiber 24. At the same time, the second motor 261 drives the second strip portion 2621 to rotate to the third position, so that the second lens group 263 collimates the image light beam emitted from the optical fiber 24 and guides it into the light input area of the waveguide lens 51, and then performs near-eye imaging through the waveguide lens 51.

[0049] It can be understood that for the intelligent helmet for underground operations provided in this application, the working principle of its image source module is that the vibration of the piezoelectric actuator 23 drives the optical fiber 24 to scan and swing, so as to output an image light beam. The tail end of the piezoelectric actuator 23 is fixed to the image source outer frame 21, and the head end extends out of the optical fiber 24. The driving electrode arranged on its surface drives the piezoelectric actuator 23 to vibrate, so that the scanning section of the optical fiber 24 scans and swings. In the AR light output mode, the control module 40 issues an instruction, and the first motor 251 drives the first strip portion 2521 to rotate, so that the first lens group 253 moves to the light output optical path of the optical fiber 24, collimates the image light beam emitted from the optical fiber 24 and guides it into the light input area of the waveguide lens 51, and performs near-eye imaging through the waveguide lens 51. The operator can clearly see the virtual guidance image. In the projection light output mode, the second motor 261 drives the second strip portion 2621 to rotate, so that the second lens group 263 leaves the light output optical path of the optical fiber 24. At the same time, the first motor 251 drives the first strip portion 2521 to rotate to another position, and the first lens group 253 directly projects the image light beam emitted from the optical fiber 24 onto distant targets such as rocks and ores, realizing the instant sharing of virtual image information. The technical effect is that it not only improves the efficiency of underground operations, but also significantly enhances the safety of operations. Without relying on the network, the operator can realize the real-time sharing of virtual image information through the intelligent helmet, avoiding operation errors and safety risks caused by blocked network transmission.

[0050] In an optional embodiment of the present application, the first axis is perpendicular to the second axis. It can be understood that the design of the first axis perpendicular to the second axis enables the first lens assembly 25 and the second lens assembly 26 to rotate to the specified positions independently and without interference when switching the light output mode. It ensures the accurate projection of the image light beam in both modes.

[0051] As Figure 6As shown, the waveguide lens 51 includes a light-incoupling region and a light-outcoupling region; a coupling-in grating 511 is disposed on the light-incoupling region for coupling the collimated light beam from the first lens assembly 25 into the waveguide lens 51 for total internal reflection transmission; a coupling-out grating 512 is disposed on the light-outcoupling region for coupling the light beam totally internally reflected in the waveguide lens 51 out towards the human eye direction.

[0052] The materials of the above-mentioned waveguide lens 51 mainly include optical glass, optical crystal, and optical plastic, etc. Optical glass has good light transmittance and high stability; optical crystal has better light transmittance and lower dispersion; optical plastic has the advantages of light weight and low cost. The selection of these materials depends on specific application requirements and performance requirements.

[0053] The above-mentioned coupling-in grating 511 and coupling-out grating 512 may include surface-relief gratings and refractive-index volume gratings. In terms of process, surface-relief gratings are often prepared by photoresist masks and etching processes, while refractive-index volume gratings may be prepared by methods such as holographic recording. In addition, some special processes such as nanoimprinting and electron beam lithography are also used for the preparation of gratings.

[0054] Continue to refer to Figure 2 , a first magnet 61 is disposed on the front surface 11 of the helmet main body 10, and a second magnet (not shown in the figure) is disposed on the spectacle frame 52. The second magnet has a magnetic property opposite to that of the first magnet 61, so that the spectacle frame 52 is detachably fixed to the helmet main body 10 by magnetic adsorption.

[0055] In an alternative embodiment of the present application, a third magnet 62 is further disposed on the front surface 11 of the helmet main body 10 for adsorbing a searchlight embedded with a fourth magnet (not shown in the figure). The third magnet has a magnetic property opposite to that of the fourth magnet. It can be understood that when the user does not need to view the virtual guiding image, the waveguide lens assembly 50 can be removed and the searchlight can be worn.

[0056] Refer to Figure 5 As shown, the control module 40 includes a processor 41, a light source modulation circuit 42, a light source component 43, a scanning drive circuit 44, and a mode control circuit 45; the light source modulation circuit 42, the scanning drive circuit 44, and the mode control circuit 45 are all electrically connected to the processor 41; the scanning drive circuit 44 is used to drive the scanning parameters of the image source module under the control of the processor 41. Specifically, the scanning drive circuit 44 can be electrically connected to the drive electrodes on the surface of the piezoelectric actuator 23 to control the vibration frequency and amplitude of the piezoelectric actuator 23; the mode control circuit 45 is used to switch the light output mode of the image source module under the control of the processor 41; the light source component 43 includes at least one set of color laser components, and each set of color laser components includes at least one red laser, at least one green laser, and at least one blue laser. The light source modulation circuit 42 is used to receive the virtual picture to be displayed transmitted by the processor 41 and modulate the output light intensity of each laser according to the virtual picture to be displayed.

[0057] It can be understood that the processor 41, as the core, is electrically connected to and controls the light source modulation circuit 42, the scanning drive circuit 44, and the mode control circuit 45 respectively. Under the control of the processor 41, the scanning drive circuit 44 adjusts the scanning parameters of the image source module to ensure clear and stable images. The mode control circuit 45 is responsible for switching the light output mode of the image source module, such as the AR or projection mode. The light source modulation circuit 42 receives the virtual screen information to be displayed transmitted by the processor 41, and modulates the output light intensity of each laser in the color laser component according to the screen content, so as to generate a color image beam corresponding to the virtual screen, and finally projects and displays it through the image source module.

[0058] Continuing to refer to Figure 5 , the light source component 43 includes a first set of color laser components 431 and a second set of color laser components 432. The light source modulation circuit 42 modulates the output light intensity of each laser in the first set of color laser components 431 in the AR light output mode, and modulates the output light intensity of each laser in the second set of color laser components 432 in the projection light output mode. The maximum output light intensity value of each laser in the second set of color laser components 432 is greater than the maximum output light intensity value of each laser in the first set of color laser components 431.

[0059] It can be understood that in the AR light output mode, the light source modulation circuit 42 modulates the output light intensity of the first set of color laser components 431, which is suitable for displaying virtual images at close range and in a small area; while in the projection light output mode, it modulates the second set of color laser components 432, whose maximum output light intensity value of the laser is larger, which is suitable for projection display at long range and in a large area. It not only meets the requirements of the two different light output modes of AR and projection, but also improves the flexibility and practicality of the light source component 43, and at the same time ensures clear and bright image display effects in different modes.

[0060] In an optional embodiment of the present application, the intelligent helmet for underground operation includes a first image source module 20, a second image source module 30, and a third motor 70. The first image source module 20 and the second image source module 30 are spaced apart and disposed on the front surface 11 of the helmet body 10. The first image source module 20 is rotatably disposed on the helmet body 10. The third motor 70 is electrically connected to the control module 40 and is used to drive the first image source module 20 to rotate relative to the helmet body 10 in the projection light output mode, so that the projection screen of the first image source module 20 coincides with or is spliced with the projection screen of the second image source module 30.

[0061] It can be understood that in the light projection mode, if a projection screen with higher brightness is desired, the third motor 70 drives the first image source module 20 to rotate so that its projection screen completely coincides with the projection screen of the second image source module 30; if a projection screen with a larger size is desired, the third motor 70 drives the first image source module 20 to rotate so that its projection screen is spliced with the projection screen of the second image source module 30. The beneficial effect of this design is that by the collaborative work of the two image source modules, the size of the projection screen can be enlarged or the brightness of the projection screen can be increased, thereby enhancing the projection effect. At the same time, the rotatable design of the first image source module 20 also increases the flexibility and adaptability of the helmet, enabling a good projection effect to be obtained at different angles and positions, and improving the practicality and user experience of the intelligent helmet for underground operations.

[0062] It should be understood that in the embodiments of the present invention, the so-called processor may be a central processing unit (CPU), and this processor may also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or this processor may also be any conventional processor, etc.

[0063] In the various embodiments of the present disclosure, the expressions "first", "second", "the first" or "the second" used may modify various components regardless of order and / or importance, but these expressions do not limit the corresponding components. The above expressions are only configured for the purpose of distinguishing an element from other elements. For example, the first user device and the second user device represent different user devices, although both are user devices. For example, without departing from the scope of the present disclosure, the first element may be referred to as the second element, and similarly, the second element may be referred to as the first element.

[0064] When an element (e.g., a first element) is referred to as being “(operatively or communicatively) coupled” or “(operatively or communicatively) coupled to” or “connected to” another element (e.g., a second element), it should be understood that the one element is directly connected to the other element or the one element is indirectly connected to the other element via yet another element (e.g., a third element). Conversely, it will be understood that when an element (e.g., a first element) is referred to as being “directly connected” or “directly coupled” to another element (a second element), no element (e.g., a third element) is inserted therebetween.

[0065] It should be noted that, in this document, the terms “comprise”, “include” or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or apparatus comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or apparatus. Without further limitation, an element defined by the statement “comprising a...” does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising that element. In addition, components, features, elements with the same name in different embodiments of the present application may have the same meaning or may have different meanings, and their specific meanings need to be determined according to their explanations in the specific embodiments or further in combination with the context in the specific embodiments.

[0066] The above description is only an alternative embodiment of the present application and an explanation of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above inventive concept. For example, technical solutions formed by mutually replacing the above features with (but not limited to) technical features having similar functions disclosed in the present application.

[0067] Depending on the context, the words “if”, “when” as used herein can be interpreted as “when” or “while” or “in response to determining” or “in response to detecting”. Similarly, depending on the context, the phrases “if determined” or “if detected (stated condition or event)” can be interpreted as “when determined” or “in response to determining” or “when detected (stated condition or event)” or “in response to detecting (stated condition or event)”.

[0068] The above description is only an optional embodiment of the present application and an explanation of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solutions formed by the specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above inventive concept. For example, the technical solutions formed by mutually replacing the above features with the technical features (but not limited to) having similar functions disclosed in the present application.

[0069] The above is only an optional embodiment of the present application and is not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An intelligent helmet for underground operations, characterized in that, Comprising: A helmet main body, an image source module, a control module, and a waveguide lens assembly; The helmet main body includes a front side that is on the same side as the human face when worn and a back side that is disposed opposite to the front side. The image source module is disposed on the front side, and the control module is disposed on the back side; The control module is configured to modulate the light source of the image source module according to the virtual image to be displayed. The image source module is configured to scan and output the image light beam modulated by the control module and switch the light output mode according to the control instruction of the control module. The light output mode includes an AR light output mode and a projection light output mode; The waveguide lens assembly includes a waveguide lens and a lens frame surrounding the waveguide lens. The lens frame is fixed to the helmet main body in a detachable manner; when the AR light output mode is adopted by the image source module, the waveguide lens performs near-eye imaging on the image light beam generated by the AR light output mode.

2. The intelligent helmet for underground operation according to claim 1, wherein The image source module includes an image source outer frame, a fixing member, a piezoelectric actuator, an optical fiber, a first lens assembly, and a second lens assembly; The tail end of the piezoelectric actuator is fixed to the image source outer frame through the fixing member. The optical fiber is fixed to the head end of the piezoelectric actuator and extends out of the head end; at least two driving electrodes that are electrically connected to the control module and are used to drive the piezoelectric actuator to vibrate are disposed on the surface of the piezoelectric actuator. When the piezoelectric actuator vibrates, it drives the scanning section of the optical fiber extending out of the head section to perform scanning swing, thereby outputting an image light beam; The first lens assembly is configured to move to the light output optical path of the optical fiber when the AR light output mode is adopted, and collimate the image light beam emitted by the optical fiber and introduce it into the light input area of the waveguide lens; The second lens assembly is configured to move to the light output optical path of the optical fiber when the projection light output mode is adopted, and project the image light beam emitted by the optical fiber onto a target object.

3. The intelligent helmet for underground operation according to claim 2, wherein The first lens assembly includes a first motor, a first lens frame, and a first lens group; the first lens frame includes a first strip portion and a first annular portion. The first lens group is embedded in the first annular portion. One end of the first strip portion is fixed with the first annular portion, and the other end of the first strip portion is rotatably disposed on the fixing member; The first motor is electrically connected to the control module and is used to drive the first strip portion to rotate relative to the fixing member along a first axis. When the first strip portion rotates to a first position, the first lens group in the first annular portion is on the light output optical path of the optical fiber, and the first lens group projects the image light beam emitted by the optical fiber onto a target object; when the first strip portion rotates to a second position, the first lens group in the first annular portion leaves the light output optical path of the optical fiber.

4. The intelligent helmet for underground operation according to claim 3, wherein The second lens assembly includes a second motor, a second lens frame, and a second lens group; the second lens frame includes a second strip portion and a second annular portion, the length of the second strip portion is greater than the length of the first strip portion, the second lens group is embedded in the second annular portion, one end of the second strip portion is fixed with the second annular portion, and the other end of the second strip portion is rotatably disposed on the fixing member; The second motor is electrically connected to the control module and is configured to drive the second strip portion to rotate relative to the fixing member along a second axis. When the second strip portion rotates to a third position, the second lens group in the second annular portion is on the light output path of the optical fiber, and the second lens group collimates the image light beam emitted from the optical fiber and guides it into the light input region of the waveguide lens; when the second strip portion rotates to a fourth position, the second lens group in the second annular portion leaves the light output path of the optical fiber.

5. The intelligent helmet for underground operation according to claim 4, wherein The first axis is perpendicular to the second axis.

6. The intelligent helmet for underground operation according to claim 2, wherein The waveguide lens includes a light input region and a light output region; a coupling grating is disposed on the light input region for coupling the collimated light beam of the first lens assembly into the waveguide lens for total reflection transmission; a coupling-out grating is disposed on the light output region for coupling the light beam totally reflected in the waveguide lens toward the human eye direction.

7. The intelligent helmet for underground operation according to claim 1, wherein A first magnet is disposed on the front surface of the helmet body, a second magnet is disposed on the spectacle frame, and the second magnet has a magnetic property opposite to that of the first magnet, so that the spectacle frame is detachably fixed to the helmet body by magnetic adsorption; and / or, A third magnet is further disposed on the front surface of the helmet body for adsorbing a searchlight embedded with a fourth magnet, and the third magnet has a magnetic property opposite to that of the fourth magnet.

8. The intelligent helmet for underground operation according to claim 1, wherein The control module includes a processor, a light source modulation circuit, a light source assembly, a scanning drive circuit, and a mode control circuit; the light source modulation circuit, the scanning drive circuit, and the mode control circuit are all electrically connected to the processor; The scanning drive circuit is configured to drive the scanning parameters of the image source module under the control of the processor; the mode control circuit is configured to switch the light output mode of the image source module under the control of the processor; The light source assembly includes at least one set of color laser assemblies, and each set of color laser assemblies includes at least one red laser, at least one green laser, and at least one blue laser. The light source modulation circuit is configured to receive the virtual display image transmitted by the processor and modulate the output light intensity of each laser according to the virtual display image.

9. The intelligent helmet for underground operation according to claim 8, wherein The light source assembly includes a first set of color laser components and a second set of color laser components. The light source modulation circuit modulates the output light intensity of each laser in the first set of color laser components in the AR light output mode, and modulates the output light intensity of each laser in the second set of color laser components in the projection light output mode. The maximum output light intensity value of each laser in the second set of color laser components is greater than the maximum output light intensity value of each laser in the first set of color laser components.

10. The intelligent helmet for underground operations according to claim 1, wherein the intelligent helmet for underground operations includes a first image source module, a second image source module and a third motor. The first image source module and the second image source module are arranged at intervals on the front of the helmet body. The first image source module is rotatably arranged on the helmet body. The third motor is electrically connected to the control module and is used to drive the first image source module to rotate relative to the helmet body in the projection light output mode, so that the projection screen of the first image source module coincides with or is spliced with the projection screen of the second image source module.

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