Laser sensing device and camera system

Abstract

The present invention provides a laser sensing device and a camera system, and relates to the field of camera device protection technology. By arranging a laser sensing device in a preset area, since the preset area is determined by an image acquisition device, the laser will first irradiate the preset area before irradiating the image acquisition device, so the laser irradiating the preset area can be collected by the laser collection component and the laser transmission component of the laser sensing device and transmitted to the laser sensor, and the laser sensor can detect the presence of the laser and send a signal of sensing the laser, so that the presence of the laser can be detected before the laser irradiates the image acquisition device and a signal can be sent in advance, so that the image acquisition device can make early warning preparations in advance.

Description

Technical Field

[0001] The present invention relates to the technical field of camera device protection, and in particular to a laser sensing device and a camera system. Background Art

[0002] The image acquisition device for monitoring is an important basic equipment for maintaining urban security. As an optical element, the image acquisition device converts the light image on the target surface of the image sensor from the visible light to the near-infrared spectrum into a video image signal, and then transmits the collected video image signal to the monitoring system. Both the image sensor and the optical lens are optical elements that work by being sensitive to light. Under the irradiation of high-intensity light such as laser, the relevant optical elements in the image acquisition device will be damaged to varying degrees, making the collected image blurred, thereby creating monitoring loopholes and posing a safety hazard. Summary of the invention

[0003] In view of this, an embodiment of the present invention provides a laser sensing device and a camera system to solve the technical problem of how to detect the laser before the laser irradiates the image acquisition device so as to provide an early warning.

[0004] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0005] An embodiment of the present invention provides a laser sensing device, which is used to be set in a preset area determined by an image acquisition device. The laser sensing device includes: a laser acquisition component, which is used to collect laser light entering the preset area; a laser transmission component, which is arranged adjacent to the laser acquisition component and is used to transmit the collected laser light; and a laser sensor, which is used to receive the laser light transmitted through the laser transmission component and emit a sensing signal.

[0006] Furthermore, the laser collecting component includes: a light collecting component for collecting laser light incident from different angles; and a reflective layer provided between the light collecting component and the laser transmission component for reflecting the incident laser light to the laser transmission component.

[0007] Furthermore, the light collecting member includes: a first body adjacent to the reflective layer and a plurality of first protrusions protruding from an outer surface of the body.

[0008] Furthermore, the outer surface of the first protrusion is a convex arc surface.

[0009] Furthermore, the laser collecting component includes a light collecting component for collecting lasers incident from different angles and at least partially reflecting the lasers to the outside.

[0010] Furthermore, the light collecting element comprises: a second body adjacent to the laser transmission element and a plurality of second protrusions at least partially protruding from the outer surface of the second body; wherein the plurality of second protrusions are arranged along parallel lines, and each second protrusion has a reflecting surface for reflecting the incident laser.

[0011] Furthermore, each of the second protrusions includes a first reflective surface and a first incident surface protruding from the outer surface of the second body, wherein the angle between the first reflective surface and the outer surface of the body is acute, and the angle between the first incident surface and the outer surface of the second body is acute or right.

[0012] Furthermore, each of the second protrusions includes an arcuate incident surface protruding from the outer surface of the second body and a reflective surface and a light-guiding surface located inside the second body; wherein, one end of the reflective surface is connected to the edge of the arcuate incident surface to form a reflective channel, and the reflective channel converges inward away from one end of the arcuate incident surface to form a light-through hole; one end of the light-guiding surface is connected to the light-through hole to form a light-guiding channel, and the light-guiding channel is adjacent to the laser transmission component.

[0013] Furthermore, the laser transmission component transmits the received laser to the laser sensor through multiple continuous reflections.

[0014] Furthermore, the direction of the light emitted by the laser collecting component into the laser transmitting component is toward a direction close to the laser sensor.

[0015] Furthermore, the laser sensing device also includes: a filter reflector, which is arranged between the laser transmission component and the laser sensor and is used to filter and reflect the laser entering the laser sensor.

[0016] Furthermore, the laser sensing device further comprises: a light guide block, which is arranged close to the light filtering and reflecting component and is used to guide the laser reflected from the light filtering and reflecting component.

[0017] Furthermore, the laser sensing device also includes: a base, which is used to accommodate the laser transmission component and the laser sensor and is fixedly connected to the laser collection component; wherein the light conductivity of the laser transmission component is greater than that of the laser collection component and the base.

[0018] Furthermore, the base includes a bottom wall and side walls arranged around the bottom wall, and the bottom wall and the side walls form a cavity for accommodating the laser transmission component and the laser sensor; wherein the laser sensor is arranged at a position adjacent to the bottom wall and the side walls, and the surfaces of the base adjacent to the cavity are both reflective surfaces.

[0019] Furthermore, the preset area is an area surrounding the image acquisition device.

[0020] Furthermore, a distance from an edge of the laser sensing device in a first direction to the image acquisition device is greater than a distance from an edge of the laser sensing device in a second direction to the image acquisition device.

[0021] Furthermore, the laser sensing device also includes a first mounting member, which includes: a connecting rod mechanism for adjusting the relative position of the laser acquisition member and the image acquisition device; and a mounting seat for fixedly connecting to the image acquisition device and rotatably connecting to the connecting rod mechanism.

[0022] Furthermore, the connecting rod mechanism includes a first sub-connecting rod mechanism and a second sub-connecting rod mechanism located on both sides of the image acquisition device; the first sub-connecting rod mechanism and the second sub-connecting rod mechanism have the same extension direction; the mounting seat has a fixing hole for fixed connection with the image acquisition device, and the two ends of the mounting seat located on both sides of the fixing hole are respectively connected to the first sub-connecting rod mechanism and the second sub-connecting rod mechanism.

[0023] Furthermore, the laser sensing device includes a plurality of sub-sensing devices, and the sub-sensing devices are detachable.

[0024] Furthermore, the laser sensing device also includes a second mounting component, which includes: a mounting plate for detachably connecting a plurality of the sub-sensing devices; and a connecting component for connecting the mounting plate and the image acquisition device.

[0025] Furthermore, the mounting plate includes: a base plate, used to be connected to the connecting piece; a plurality of partitions, which protrude from the outer surface of the base plate and are arranged at intervals, and a mounting area for installing the sub-sensing device is formed between adjacent partitions and the base plate; a reflective member, which is arranged at one end of the partition away from the base plate, and the surface of the reflective member adjacent to the sub-sensing device forms a reflective surface.

[0026] Furthermore, a limiting member is provided on the outer surface of the bottom plate for forming and releasing the connection between the sub-sensing device and the bottom plate.

[0027] Furthermore, the connecting member includes a plurality of connecting rods connected in sequence, and adjacent connecting rods are rotatably connected to each other.

[0028] Furthermore, the preset area is a surface area of ​​a fixing rod that fixes the image acquisition device.

[0029] Furthermore, the laser sensing device includes a plurality of sub-strip devices, and the sub-strip devices are all arranged along the height direction of the fixing rod.

[0030] Furthermore, the laser sensing device further comprises a reflective insert, and the reflective insert is arranged between adjacent sub-strip devices.

[0031] Furthermore, the laser sensing device further comprises: a mounting belt, which surrounds the surface of the fixing rod and is fixed to the fixing rod, and the side of the mounting belt away from the fixing rod is fixedly connected to the sub-strip device.

[0032] Further, the installation belt includes a belt body extending in the circumferential direction and a plurality of third protrusions protruding from the surface of the belt body and distributed at intervals in the circumferential direction.

[0033] Further, the sub-bar device comprises a first groove and a second groove extending along a length direction of the sub-bar device, and an extension length of the first groove is smaller than an extension length of the second groove.

[0034] An embodiment of the present invention further provides a camera system, comprising: an image acquisition device for acquiring images; a fixing rod for fixing the image acquisition device at a position close to the upper end of the fixing rod; and at least one laser sensing device as described above.

[0035] The laser sensing device and camera system provided in the embodiment of the present invention are arranged in a preset area determined by the image acquisition device, and the laser sensing device includes a laser collection component, a laser transmission component and a laser sensor. In the embodiment of the present invention, the laser sensing device is arranged in the preset area. Since the preset area is determined by the image acquisition device, the laser will irradiate the preset area before irradiating the image acquisition device. Therefore, the laser irradiating the preset area can be collected by the laser collection component and the laser transmission component of the laser sensing device and transmitted to the laser sensor. The laser sensor can detect the presence of the laser and send a signal of sensing the laser, so that the presence of the laser can be detected before the laser irradiates the image acquisition device and a signal can be sent in advance, so that the image acquisition device can make early warning preparations in advance. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic diagram of the structure of a first camera system at one angle provided by an embodiment of the present invention;

[0037] Figure 2 A side view of a first laser sensing device provided by an embodiment of the present invention;

[0038] Figure 3 for Figure 2 Enlarged view of part A in the middle;

[0039] Figure 4 An exploded schematic diagram of a first laser sensing device provided by an embodiment of the present invention;

[0040] Figure 5A schematic diagram of the structure of a second laser sensing device provided by an embodiment of the present invention;

[0041] Figure 6 for Figure 5 Enlarged view of middle part B;

[0042] Figure 7 A side view of a third laser sensing device provided by an embodiment of the present invention;

[0043] Figure 8 A schematic structural diagram of a third laser sensing device provided by an embodiment of the present invention;

[0044] Fig. 9 A schematic diagram of the structure of a protrusion provided by an embodiment of the present invention;

[0045] Fig.10 for Figure 8 The stereogram of the middle C part;

[0046] Fig.11 A schematic structural diagram of a fourth laser sensing device provided by an embodiment of the present invention;

[0047] Fig.12 A front view of a first laser sensing device provided by an embodiment of the present invention;

[0048] Fig.13 A structural schematic diagram of another angle of the first camera system is provided for an embodiment of the present invention;

[0049] Fig.14 A schematic structural diagram of a first linkage mechanism provided by an embodiment of the present invention at an angle;

[0050] Fig.15 A schematic structural diagram of another angle of the first connecting rod mechanism provided by an embodiment of the present invention;

[0051] Fig.16 A schematic structural diagram of a second linkage mechanism provided by an embodiment of the present invention at an angle;

[0052] Fig.17 A schematic structural diagram of another angle of the second connecting rod mechanism provided by an embodiment of the present invention;

[0053] Fig.18 A schematic diagram of the structure of a second camera system provided by an embodiment of the present invention;

[0054] Fig.19 A schematic diagram of the structure of a sub-sensing device provided in an embodiment of the present invention;

[0055] Fig. 20 A schematic structural diagram of a second mounting member provided in an embodiment of the present invention;

[0056] Fig.21 A schematic diagram of the structure of a limiter provided in an embodiment of the present invention;

[0057] Fig. 22 A schematic diagram of the structure of a spring slot provided in an embodiment of the present invention;

[0058] Fig.23 A schematic diagram of the structure of a sub-strip device provided by an embodiment of the present invention;

[0059] Fig.24 A schematic diagram of the structure of a mounting belt provided by an embodiment of the present invention;

[0060] Fig.25 A schematic diagram of the back of a sub-strip device provided by an embodiment of the present invention;

[0061] Fig.26 A schematic diagram of a control circuit provided by an embodiment of the present invention.

[0062] Description of reference numerals:

[0063] 1. Image acquisition device; 2. Area surrounding the image acquisition device; 2a. Through hole; 2b. Sub-sensing device; 3. Sub-strip device; 4. Fixing rod; 21. Laser acquisition component; 211. Light collecting component; 212. Reflection layer; 22. Laser transmission component; 23. Laser sensor; 24. Base; 24a. Bottom wall; 24b. Side wall; 25. Filtering reflector; 25a. Reflection slope; 26. Light guide block; 201. First body; 202. First protrusion; 21a. Light collecting component; 213. Second protrusion; 214. Second body; 213a. First reflection surface; 213b. First incident surface; 231. Arc incident surface; 232. Reflection surface; 233. Light guiding surface; 232a. Reflection channel; 233a. Light guiding channel; 31. Mounting belt ; 32, reflective insert; 31a, belt body; 31b, third protrusion; 33a, fixing groove; 33, fixing block; 34a, first groove; 34b, second groove; 51, connecting rod mechanism; 52, mounting seat; 500, mounting area; 511, first angle adjustment part; 512, second angle adjustment part; 513, third angle adjustment part; 514, fourth angle adjustment part; 515, fifth angle adjustment part; 521, first fixing hole; 522, second fixing hole; 531, mounting plate; 532, connecting piece; 5, first mounting piece; 516, first sub-connecting rod mechanism; 517, second sub-connecting rod mechanism; 523, fixing hole; 531a, bottom plate; 531b, partition; 531c, reflective piece; 531d, limit piece; 531e, spring slot. DETAILED DESCRIPTION

[0064] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0065] The various specific technical features described in the specific embodiments can be combined in any suitable manner without contradiction, for example, different embodiments and technical solutions can be formed by combining different specific technical features. In order to avoid unnecessary repetition, various possible combinations of the specific technical features in the present invention will not be described separately.

[0066] In the following description, the terms "first\second\..." are only used to distinguish different objects, and do not mean that the objects have the same or related points. It should be understood that the directions "above", "below", "outside" and "inside" are all directions in normal use, and the directions "left" and "right" refer to the left and right directions shown in the corresponding schematic diagrams, which may or may not be the left and right directions in normal use.

[0067] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0068] The present invention provides a laser sensing device and a camera system, and the laser sensing device can be applied to the camera system of an image acquisition device such as a surveillance camera. It should be noted that the application scenario type of the present invention does not limit the laser sensing device of the present invention.

[0069] First, the sensing principle of the laser sensing device is briefly described. By detecting the laser irradiation around the image acquisition device, the laser near the image acquisition device can be captured. Before the laser irradiates the image acquisition device, the laser is collected, transmitted and sensed to avoid high-intensity laser directly irradiating the image acquisition device, causing the image acquisition device to be damaged. It should be noted that laser refers to a beam of photons induced by stimulated radiation of atoms, in which the optical properties of the photons are highly consistent. Therefore, the laser has better monochromaticity and directionality than ordinary light sources, and has high brightness. High-intensity laser refers to a laser whose light intensity is greater than the conventional light intensity. Its corresponding energy is strong. When it is irradiated on an image acquisition device that is sensitive to light, the temperature of related components becomes high, and there is a risk of burning the components.

[0070] The specific structure of the laser sensing device according to the embodiment of the present invention is described below. Figure 1 As shown, a laser sensing device according to an embodiment of the present invention is used to be set in a preset area determined by an image acquisition device 1. It should be noted that the preset area determined refers to an area around the image acquisition device 1 and is usually passed by the laser before irradiating the image acquisition device 1, including an area around and close to the image acquisition device 1, a surface area of ​​a fixing rod on which the image acquisition device 1 is installed, etc. Optionally, the laser sensing device can be set around the image acquisition device (refer to Figure 1 2), and / or is set on the fixing rod for installing the image acquisition device (refer to Figure 1 By arranging the laser sensing device in the preset area, the laser can be sensed before the external laser directed at the image acquisition device enters the image acquisition device, so that the image acquisition device can make early warning preparations and reduce the risk of damage to the image acquisition device.

[0071] Reference Figure 2The laser sensing device in the embodiment of the present invention includes a laser collection component 21, a laser transmission component 22 and a laser sensor 23. The laser collection component 21 is used to collect laser light incident into a preset area. It should be noted that collection refers to collecting the laser light incident into the preset area so that the laser light can be easily detected. It can be understood that the collection surface of the laser collection component 21 is set at the front end of the incident surface of the image acquisition device, so the laser light is collected by the laser collection component 21 before it is incident into the image acquisition device. The laser transmission component 22 is arranged adjacent to the laser collection component 21. It should be noted that adjacent means that the relative position of the laser transmission component 22 and the laser collection component 21 can be mutually fitted and stacked, or can be close to each other with a gap in the middle. The adjacent position can enable the laser light collected on the laser collection component 21 to be transmitted to the laser transmission component 22. The laser transmission component 22 is used to transmit the collected laser light to a specified direction so that the laser light can be easily detected by the laser sensor 23. Optionally, the specified direction can be the direction toward the laser sensor 23. The laser sensor 23 is a device for detecting lasers, and its functions include but are not limited to detecting the intensity of the laser and detecting the color of the laser. The embodiment of the present invention uses the laser sensor 23 to receive the laser transmitted through the laser transmission element 22 and send out an induction signal, thereby triggering a protection device for protecting the image acquisition device.

[0072] The laser sensing device of the embodiment of the present invention is arranged in a preset area. Since the preset area is determined by the image acquisition device, the laser will first irradiate the preset area before irradiating the image acquisition device. Therefore, the laser irradiating the preset area can be collected by the laser collection component and the laser transmission component of the laser sensing device and transmitted to the laser sensor. The laser sensor can detect the presence of the laser and send a signal of sensing the laser, thereby detecting the presence of the laser before the laser irradiates the image acquisition device and sending a signal in advance, so that the image acquisition device can make early warning preparations in advance.

[0073] In some embodiments, reference Figure 3 The laser collection component includes: a light collecting component 211 and a reflective layer 212. The light collecting component 211 is used to collect lasers incident on the outer surface of the light collecting component 211 from different angles; the reflective layer 212 is arranged between the light collecting component 211 and the laser transmission component 22. The light collecting component 211, the reflective layer 212 and the laser transmission component 22 can be stacked and bonded, or the light collecting component, the reflective component and the laser transmission component can be bonded in sequence from the outside to the inside. The reflective layer 212 is used to reflect the incident laser to the laser transmission component 22. After reflection by the reflective layer, the intensity of the incident laser can also be weakened due to the dissipation of the propagation process, which is beneficial to protect the laser sensor.

[0074] In some embodiments, reference Figure 4, the light collecting member 211 includes a first body 201 adjacent to the reflective layer 212 and a plurality of first protrusions 202 protruding from the outer surface of the first body 201; the first body 201 is arranged close to the reflective layer 212, and the first protrusions 202 extend upward relative to the outer surface of the first body 201. The first protrusions 202 have surface profiles in multiple different directions relative to the first body 201. Therefore, the first protrusions 202 can receive lasers incident at more angles relative to the first body 201. Among them, the plurality of first protrusions 202 are arranged along parallel lines. It should be noted that parallel lines can be parallel straight lines or parallel curves. Arrangement along parallel lines means that the plurality of first protrusions 202 can be distributed on different straight lines or curves that are parallel to each other. By arranging the first protrusions 202 on parallel lines, the first protrusions can be arranged more closely on the outer surface of the light collecting member 211, thereby reducing the probability that the incident laser is not collected. During the propagation of light, refraction and reflection will occur at the interface between two media. Refer to Figure 3 As shown in the optical path diagram, after the laser enters the light collecting component 211, it will be refracted and reflected due to the different media between the light collecting component 211 and the air. Therefore, part of the laser will be reflected into the air (not shown in the figure), and the other part will be refracted into the light collecting component 211. The light collecting component 211 transmits the refracted part of the laser to the laser transmission component 22, and the laser transmission component 22 transmits the laser in the direction of the laser sensor 23. Under the transmission of the multi-layer medium, the light intensity of the laser will gradually weaken, and at the same time, the original laser will be dispersed into multiple beams and emitted to the laser sensor 23.

[0075] The light collecting element in the embodiment of the present invention collects the laser and transmits it to the reflective layer, which reflects the laser to the laser transmission element. The laser landing point after being transmitted through the laser transmission element can be captured by multiple laser sensors close to the landing point direction, thereby increasing the accuracy of laser capture; shortening the laser capture distance, and being able to more quickly issue an early warning of the laser landing point close to the image acquisition device.

[0076] Reference Figure 4 In some embodiments, the outer surface of the first protrusion 202 is a convex curved surface. It should be noted that the curved surface means that the surface has a smooth transition and a certain curvature, and there is no inflection point, which is conducive to collecting light incident from all directions. Setting the first protrusion 202 as a curved surface can collect lasers irradiated at different angles, and refract the laser to a direction close to the center of the arc, so that it is convenient for the reflective layer 212 to transmit the laser to the laser sensor 23. Specifically, the light collecting member 211 can be set to a transparent material with high light transmittance, combined with Figure 3As shown in the optical path diagram, when the laser is irradiated to the first protrusion 202 on the curved surface, the laser irradiated from different angles and entering the transparent first protrusion 202 will be refracted, and the light collecting member 211 will refract the laser that is at an acute angle to the surface of the first body 201, thereby changing the angle of entering the reflective layer 212, which is convenient for subsequent laser transmission. Specifically, the reflective layer 212 can also be set as a transparent material with high light transmittance, and at least one surface of the reflective layer 212 is set as a reflective surface, and the reflective surface is set in the direction of the laser sensor 23. The reflective surface is used to adjust the direction of the incident laser, and can convert the laser incident from the direction away from the laser sensor 23 into the direction toward the laser sensor 23. Specifically, the reflective layer 212 may include a reflective layer body parallel to the first body 201 of the light collecting member 211 and a plurality of reflective blocks protruding from the outer surface of the reflective layer body, and the side of the reflective block close to the laser sensor 23 is the reflective surface, and the reflective surface is set obliquely relative to the reflective layer body, and can reflect the laser transmitted by the light collecting member to the direction close to the laser sensor 23. It should be noted that approaching means that the light originally incident in the direction away from the laser sensor is reflected by the reflective surface so that the reflected light is directed toward the laser sensor 23. In the process of laser entering the laser sensing device, it undergoes multiple reflections before entering the laser sensor. Since part of the laser is dissipated in the reflection process, the intensity of the laser entering the laser sensor is reduced, which has a protective effect on the laser sensor.

[0077] In other embodiments, reference Figure 5 The laser collection component 21 includes a light collecting component 21a for collecting lasers incident from different angles and at least partially reflecting the lasers to the outside. Specifically, the light collecting component 21a is a component that integrates the laser collection and reflection functions, and does not need to be set separately from the reflection component. In the case of reflection by the light collecting component, the direction of the incident light can be changed, and the laser light that is away from the direction of the laser sensor 23 can be adjusted to enter the laser transmission component toward the direction close to the laser sensor.

[0078] Specifically, refer to Figure 5 As shown, the light collecting member 21a includes a second body 214 adjacent to the laser transmission member 22 and a plurality of second protrusions 213 at least partially protruding from the outer surface of the second body 214; wherein the plurality of second protrusions 213 are arranged along parallel lines, and each second protrusion 213 has a reflecting surface for reflecting incident laser light (see Figure 6 As shown at 213a). By adopting a composite structure of the protrusion and the body, one side of the protrusion is set as a reflective surface, which can achieve the functions of collecting and reflecting laser light, so that the laser light can be transmitted toward the direction of the laser sensor while being weakened.

[0079] In some embodiments, reference Figure 6 ( Figure 5), each second protrusion 213 includes a first reflection surface 213a and a first incident surface 213b protruding from the outer surface of the second body 214, wherein the angle between the first reflection surface 213a and the outer surface of the second body 214 is an acute angle, and the angle between the first incident surface 213b and the outer surface of the body is an acute angle or a right angle. The side of the second protrusion 213 facing the laser sensor 23 is the first reflection surface 213a, and the other side opposite to the first reflection surface 213a is the first incident surface 213b. The plurality of second protrusions 213 extend around the laser sensor 23, and the first reflection surfaces 213a of each second protrusion 213 are all uniformly facing the laser sensor 23, and each first incident surface 213b is facing the direction opposite to the first reflection surface 213a. When the laser is incident on the second protrusion 213 from the direction away from the laser sensor 23, the laser is irradiated on the first reflection surface 213a, and the first reflection surface 213a reflects the laser to the second body 214 or the first incident surface of the adjacent protrusion, thereby changing the irradiation direction of the laser. The laser irradiated on the body enters the laser transmission member 22 from the direction toward the laser sensor 23; the laser reflected on the first incident surface 213b enters the second protrusion 213, and the reflection surface inside the second protrusion 213 irradiates the laser into the laser transmission member 22 in the direction close to the laser sensor 23. Specifically, the second protrusion 213 can be made of a transparent material with high light transmittance. When the laser is irradiated on the light collecting member 21a, since the laser irradiated from a distance is intended to destroy the image acquisition device, the angle between the laser and the second body 214 is relatively large, and the relatively large angle means that the angle between the laser and the second body 214 is relatively vertical. For an incident angle that is nearly vertical, the angle of the laser after entering the second protrusion 213 is also relatively large, which is not conducive to the transmission of the laser in the laser transmission member 22, thereby affecting the sensitivity of the entire laser sensing device to capture the laser. The embodiment of the present invention adopts a structure in which the first reflection surface and the first incident surface are respectively arranged at set angles, so as to adjust the angle of the laser vertically incident on the light collecting element, so that the laser is reflected in the direction close to the laser sensor, thereby shortening the path of the laser in the laser transmission element, reducing the transmission time, and thereby improving the sensing sensitivity of the laser sensing device.

[0080] In some embodiments, reference Figure 7 and Figure 8, each second protrusion 213 may also include an arc-shaped incident surface 231 protruding from the outer surface of the second body 214, and a reflective surface 232 and a light-guiding surface 233 located inside the body; the second body 214 is used to fix the second protrusions 213 so that the second protrusions 213 are arranged at a certain interval. The arc-shaped incident surface 231 protrudes from the outer surface of the second body 214, and is used to collect lasers incident from different angles. Specifically, the arc-shaped incident surface 231 can be set to a transparent material with high light transmittance. The reflective surface 232 is used to adjust the angle of the laser entering the second protrusion 213 so that it is reflected in a direction close to the laser sensor 23. The light-guiding surface 233 transmits the adjusted laser to the laser transmission element 22. Specifically, one end of the reflective surface 232 is connected to the edge of the arc-shaped incident surface 231 to form a reflection channel (see Fig. 9 232a), the end of the reflection channel 232a away from the arc-shaped incident surface 231 is converged inward to form a light-through hole; it should be noted that the convergence means that the cross-sectional size of the end of the reflection channel 232a close to the arc-shaped incident surface 231 is larger than the cross-sectional size of the end away from the arc-shaped incident surface 231. By setting the reflection channel 232a as a converged structure, the laser can be reflected toward the laser sensor 23, and its directionality will be stronger than that of a straight-cylindrical reflection channel. One end of the light-guiding surface 233 is connected to the light-through hole to form a light-guiding channel (see Fig. 9 233a), the light guide channel 233a is adjacent to the laser transmission member 22. Optionally, the laser sensor 23 is arranged on the side of the laser transmission member 22, and the second protrusion 213 is arranged on the top of the laser transmission member 22. Therefore, the laser sensor 23 is relatively arranged at the side and lower position of the protrusion. The setting direction of the light guide channel 233a is to connect the light through hole and the direction toward the laser sensor 23. Therefore, the light guide channel 233a is arranged at a preset angle with the surface of the laser transmission member 22, and the above preset angle includes an acute angle and an obtuse angle. The structure of the integrated light collecting member is adopted, which has the functions of light collecting and reflection at the same time. Each light collecting member can be installed independently, which is conducive to individual replacement and maintenance, and reduces maintenance costs.

[0081] In some embodiments, the laser transmission element transmits the received laser light to the laser sensor after multiple continuous reflections. It should be noted that continuous reflection means that the same laser light is reflected multiple times in the medium of the laser transmission element to the direction of the laser sensor. Figure 3 , Figure 6 and Figure 7In the embodiment shown, the light transmittance inside the laser transmission component 22 is greater than the light transmittance of the medium adjacent to the laser transmission component 22, the laser transmission component 22 may be made of a transparent material, and the lower surface of the laser transmission component 22 may be a reflective surface. In other embodiments, the end surface of the laser transmission component 22 away from the laser collection component 21 may also be fitted with a base 24, the light transmittance of the laser transmission component 22 is greater than the base 24 and the laser collection component 21, and after the laser is transmitted from the laser collection component 21 to the laser transmission component 22, it can be continuously reflected relative to the upper and lower surfaces of the laser transmission component 22 until the laser is sensed by the laser sensor 23.

[0082] In some embodiments, reference Figure 3 , the direction of the light emitted by the laser collection component 21 into the laser transmission component 22 is toward the direction close to the laser sensor 23. That is to say, on the basis of the laser transmission component 22 guiding the transmitted laser to the laser sensor 23, the laser collection component 21 guides the laser toward the laser sensor 23 during the process of transmitting the laser to the laser transmission component, thereby further shortening the path of the laser to the laser sensor and improving the sensing speed of the laser sensing device. Specifically, refer to Figure 3 The laser sensing device further includes a filter reflector 25, which is disposed between the laser transmission component 22 and the laser sensor 23 and is used to filter the laser from the laser transmission component 22 to the laser sensor 23. The filter reflector 25 can be partially disposed between the laser transmission component 22 and the laser sensor 23, and the filter reflector 25 can also reflect part of the laser light incident from the laser transmission component 22 to weaken the light intensity. Specifically, the side of the filter reflector 25 close to the laser transmission component 22 can be set as a reflective slope (refer to Fig.10 The main body of the filter reflector 25 is set as a filter block of a set color. A plurality of filter blocks of different colors can be set around the laser sensor 23. Figure 6 The embodiment shown may also be provided with a filter reflector 25, the function and principle of which are the same as those of the above embodiment, and will not be described in detail. The filter reflector in the embodiment of the present invention can effectively prevent the laser from gathering and generating heat to damage the laser sensor, and the adjacent filter reflectors also have different colors. For lasers of different colors, only lasers with colors similar to those of the filter reflectors can pass through. After the laser sensor at the rear end of the colored filter reflector sends out an early warning electrical signal, the color information of the laser irradiated on the laser sensing device can be known. The image acquisition device can be further protected according to the obtained laser color and the image acquisition device can be guaranteed to capture the image.

[0083] In some embodiments, reference Figure 3The laser sensing device further includes a light guide block 26, which is disposed close to the filter reflector. It should be noted that close to means that the light guide block can be disposed in close contact with the filter reflector or can be disposed at a distance from the filter reflector. The light guide block is used to guide the laser reflected from the filter reflector and guide the filtered laser out of the laser sensing device to weaken the light intensity. Figure 6 and Figure 7 In the embodiment, a light guide block 26 may also be provided, and its function and principle are the same as those of the above embodiment, and will not be described in detail. The incident paths of lasers incident on the laser sensing device from different directions and angles are also different, but after refraction and reflection, the lasers incident on the laser sensing device will eventually be sensed by the laser sensor, and most of the incident lasers can be reflected out of the laser sensing device by one end of the light guide block, which is beneficial to reduce the intensity of the laser incident on the laser sensor and reduce the risk of damage to the laser sensor.

[0084] In some embodiments, reference Figure 3 , Figure 8 and Fig.11 The laser sensing device also includes a base 24, which is used to accommodate the laser transmission component 22 and the laser sensor 23, and is fixedly connected to the laser collection component 21; accommodating means that after the base 24 is connected to the laser collection component 21, a space for placing the laser transmission component 22 and the laser sensor 23 is formed. Among them, the light conductivity of the laser transmission component 22 is greater than that of the laser collection component 21 and the base 24. After the laser is transmitted to the laser transmission component 22, it can be continuously reflected in the laser transmission component 22 until the laser sensor 23 senses the laser.

[0085] In some embodiments, reference Fig.11 The base includes a bottom wall 24a and a side wall 24b arranged around the bottom wall 24a, and the bottom wall 24a and the side wall 24b enclose a cavity for accommodating the laser transmission component 22 and the laser sensor 23; wherein the laser sensor 23 is arranged at a position where the bottom wall 24a and the side wall 24b are adjacent, and it should be noted that adjacent refers to the position where the bottom wall 24a and the side wall 24b are connected. The bottom wall 24a can be arranged parallel to the laser transmission component 22, and the side wall 24b can be arranged perpendicular to the bottom wall 24a, and the surfaces of the base 24 adjacent to the cavity are all reflective surfaces. Specifically, the bottom wall 24a and the side wall 24b can be reflective surfaces, which are used to reflect the light irradiated to the side wall 24b or the bottom wall 24a back to the laser transmission component 22, so as to realize continuous reflection of the laser in the laser transmission component 22.

[0086] In some embodiments, the preset area is an area surrounding the image acquisition device (see Figure 1 The area indicated by the label 2). It should be noted that surrounding means being arranged around the image acquisition device 1. The laser sensing device is arranged around the image acquisition device so as to capture the laser approaching from all sides of the image acquisition device.

[0087] In some embodiments, reference Fig.12 , the distance from the edge of the laser sensing device 2 in the first direction (see the x direction in the figure) to the image acquisition device is greater than the distance from the edge of the laser sensing device in the second direction (see the y direction in the figure) to the image acquisition device. Specifically, when the laser sensing device is arranged around the image acquisition device 1, the image acquisition device 1 is arranged in the through hole in the laser sensing device (see Fig.12 2a), during the laser irradiation to the image acquisition device, the second direction can be equal to the vertical direction of the installation. Since there is no reference object above the image acquisition device, the probability of the laser landing point above the image acquisition device is small. Fig.12 In another embodiment, if a fixing rod is used to fix the laser sensing device on the top, the area of ​​the laser sensing device can be appropriately reduced in the direction along the mounting member. Specifically, if the mounting member is arranged along the y direction, since the fixing rod can be used as a reference for approaching the image acquisition device, the size in the y direction can be appropriately increased or a laser sensing device can be arranged along the surface of the fixing rod. If the fixing rod is arranged along the x direction, the area of ​​the laser sensing device in the x direction can be appropriately increased by the same token.

[0088] In some embodiments, Fig.13 As shown, the laser sensing device further includes a first mounting member 5, through which the laser sensing device and the image acquisition device are fixed. Fig.14 and 15 The first mounting member 5 includes a connecting rod mechanism 51 and a mounting seat 52: the connecting rod mechanism 51 is used to adjust the relative position between the laser acquisition member and the image acquisition device (refer to the relative position of 1 and 2 shown in 13). If a base is provided in the laser sensing device, the connecting rod mechanism is connected to the outer surface of the base away from the laser acquisition member. The mounting seat 52 is used to be fixedly connected to the image acquisition device and rotatably connected to the connecting rod mechanism 51.

[0089] In some embodiments, reference Fig.14 The link mechanism 51 includes a link mechanism 52 located in the image acquisition device 1 (refer to Fig.13The first sub-link mechanism 516 and the second sub-link mechanism 517 are respectively arranged on the two sides of the image acquisition device (the position shown in the figure); it should be noted that the two sides refer to the image acquisition device being arranged at the center of the laser sensing device, and the first sub-link mechanism and the second sub-link mechanism are respectively arranged on the two sides of the image acquisition device (the left and right sides shown in the figure), and can be symmetrically arranged relative to the image acquisition device. The first sub-link mechanism 516 and the second sub-link mechanism 517 are both connected to the outer surface of the base 24 and extend in the same direction; the mounting seat 52 has a fixing hole 523 for fixing with the image acquisition device, and the two ends of the mounting seat 52 located on both sides of the fixing hole 523 are respectively connected to the first sub-link mechanism 516 and the second sub-link mechanism 517. Specifically, the fixing hole 523 can be set as a detachable clamp, and the opposite ends of the first sub-link mechanism 516 and the second sub-link mechanism 517 form two parts of the clamp, and the two separated clamps are connected by threads. During installation, first open the clamp, and the mounting seat 52 is not connected to the connecting rod of the image acquisition device. After the clamp is wrapped on the camera mounting crossbar, place the mounting seat horizontally, and then connect the camera mounting crossbar to the mounting seat through bolts, and then rotate the connecting rod mechanism 51 and the laser sensing device to adjust the laser collection surface of the laser sensing device to be perpendicular to the camera body, so as to facilitate the collection and early warning of the laser landing point close to the camera. Specifically, the first sub-connecting rod mechanism and the second sub-connecting rod mechanism are connected through multiple rotation points, and the connecting bolts on the rotation points are connected to the connecting rod away from the nut cap through threads. The connecting hole on the side close to the nut is a through hole. When the bolts are loosened, the relative position of the connecting rod can be used to adjust the sensing device. After the angle adjustment is completed, the bolts can be locked to fix the position of the laser sensing device.

[0090] In some embodiments, the connecting rod mechanism 51 can also be configured as follows: Figure 16-17 In the structure shown, the connecting rod mechanism includes a first angle adjustment portion 511, a second angle adjustment portion 512, a third angle adjustment portion 513, a fourth angle adjustment portion 514 and a fifth angle adjustment portion 515 formed by a plurality of connecting rods rotatably connected. The first angle adjustment portion 511 is used to achieve relative rotation with the mounting seat 52; the second angle adjustment portion 512 and the third angle adjustment portion 513 can be used together to adjust the relative height and depth with the image acquisition device 1; the third angle adjustment portion 513 and the fourth angle adjustment portion 514 are used to adjust the relative lateral distance with the image acquisition device 1; the fourth angle adjustment portion 514 and the fifth angle adjustment portion 515 are used to adjust the relative longitudinal distance with the image acquisition device 1. The mounting seat 52 includes a portion for connecting with the fixing rod 4( Fig.18 The first fixing hole 521 connected to the image acquisition device 1 is shown in the figure, and the second fixing hole 522 connected to the image acquisition device 1 is shown in the figure.

[0091] In some embodiments, reference Fig.19The laser sensing device includes a plurality of sub-sensing devices 2b, and the sub-sensing devices 2b are detachable. The sub-sensing devices 2b can be set to a fan-shaped structure, and a plurality of fan-shaped sub-sensing devices 2b can be spliced ​​together to form a circle (such as Fig.18 In other embodiments, multiple sub-sensing devices 2b can also be spliced ​​into irregular shapes (see Figure 1 The splicing method in the embodiment of the present invention is not limited to the splicing shape in the above embodiment. By adopting a detachable splicing structure, it is easy to replace the damaged sub-sensing device, improve maintenance efficiency, and reduce maintenance costs.

[0092] In some embodiments, reference Fig.18 The laser sensing device also includes a second mounting member, which includes a mounting plate 531 and a connecting member 532. The mounting plate 531 is used to detachably connect multiple sub-sensing devices; the connecting member 532 connects the mounting plate 531 and the image acquisition device.

[0093] In some embodiments, reference Fig.16 , 17 , 18, 20, the mounting plate 531 includes a bottom plate 531a, a partition 531b and a reflector 531c, and the bottom plate 531a is used to connect with the connecting member 532. The partitions 531b protrude from the outer surface of the bottom plate 531a and are arranged in plurality at intervals. An installation area ( Fig. 20 The reflector 531c is arranged at one end of the partition 531b away from the bottom plate 531a, and the surface of the reflector 531c adjacent to the sub-sensing device forms a reflective surface. Specifically, the two bottom plates 531a can be concentrically arranged in a circular ring shape, and the two bottom plates 531a are connected by a plurality of partitions 531b to be divided into a plurality of fan-shaped installation areas, and the inner bottom plate 531a ( Fig. 20 The small ring in the middle forms a hole for penetrating the image acquisition device. At least two sides of the reflector 531c are reflective surfaces, and one side connected to the partition 513b protrudes from the partition 531b. Specifically, the reflector 513c can be set as a triangular reflective column.

[0094] In some embodiments, reference Fig. 20 As shown, the outer surface of the bottom plate 531a is provided with a limiter 531d, which is used to form and release the connection between the sub-sensing device and the bottom plate 531a. Specifically, the sub-sensing device is arranged within the range defined by the reflector 531c and the installation area, and abuts against the limiter 531d. The limiter 531d can be set as a limiter spring, which is close to the inner side ( Fig. 20 The side close to the inner bottom plate 513a is a vertical surface, and the side close to the outer ring ( Fig. 20The spring piece at the side of the outer bottom plate 513a in the middle) is an inclined surface, one end of the inclined surface is fixed to the outer bottom plate, and the end of the vertical surface is a free end. When installing the sub-sensing device, the sub-sensing device is inserted into the installation area A, so that the vertical surface of the limiting member 513d abuts against the spring piece slot of the sub-sensing device, thereby maintaining the relative stability of the sub-sensing device and the mounting plate 531. When the sub-sensing device needs to be removed, it only needs to apply a pulling force from the free end of the limiting spring piece to make the limiting spring piece detach from the spring piece slot 531e (refer to Fig. 22 ).

[0095] In some embodiments, the connecting member includes a plurality of connecting rods connected in sequence, and the adjacent connecting rods are rotatably connected. Fig.16 The structure shown is formed by a plurality of connecting rods rotatably connected to form a first angle adjustment portion 511, a second angle adjustment portion 512, a third angle adjustment portion 513, a fourth angle adjustment portion 514 and a fifth angle adjustment portion 515. The first angle adjustment portion 511 is used to achieve relative rotation with the mounting seat 52; the second angle adjustment portion 512 and the third angle adjustment portion 513 can be used together to adjust the relative height and depth with the image acquisition device 1; the third angle adjustment portion 513 and the fourth angle adjustment portion 514 are used to adjust the relative lateral distance with the image acquisition device 1; the fourth angle adjustment portion 514 and the fifth angle adjustment portion 515 are used to adjust the relative longitudinal distance with the image acquisition device 1. The mounting seat 52 includes a fixing rod ( Fig.18 The first fixing hole 521 connected to the image acquisition device 1 is marked with a number 4) and the second fixing hole 522 connected to the image acquisition device 1. Specifically, the structure for connecting the mounting plate and the image acquisition device can also be as follows: Fig.14 The structure shown can also realize the adjustment of the relative position and relative angle between the laser sensing device and the image acquisition device, which will not be described in detail.

[0096] In some embodiments, the image acquisition device is mostly mounted on a smooth fixed rod. If it is directly connected to the fixed rod through a mounting plate, the mounting ring is likely to loosen after long-term use, causing the laser sensor device to deviate and affect its use. Fig.18 As shown, two clamps are provided, which are fixed to the vertical rod and the horizontal rod respectively, and are fixed to the fixing rod by connecting two vertical fixing points, so that the laser sensing device will not become loose or offset due to long-term use.

[0097] In some embodiments, the preset area is the surface area of ​​the fixing rod for fixing the image acquisition device. Figure 1 By installing the laser sensing device on the surface of the fixed rod, the laser falls upward along the fixed rod ( Figure 1When the laser beam moves in the upward direction as shown in the figure, and the trajectory of the laser landing point passes through the fixed rod, the laser sensing device can detect the laser beam and send out a warning signal.

[0098] In some embodiments, reference Figure 1 and Fig.23 The laser sensing device includes a plurality of sub-strip devices 3, and the sub-strip devices 3 are arranged along the height direction of the fixed rod 4. The number of sub-strip devices 3 can be selected as the diameter of the fixed rod 4 changes, and the position of each sub-strip device 3 can be adjusted to determine the sensing and collection area. The installed sub-strip sensing device can not only collect the laser landing point close to the image acquisition device, but also reasonably arrange the number of sub-strip sensing devices to save resources.

[0099] In some embodiments, reference Figure 1 , 23 and 24, Fig.24 The schematic diagram of the connection between the mounting belt and the sub-strip device is shown (the area shown is the cross-sectional connection area), and the mounting belt 31 surrounds the surface of the fixing rod 4 ( Figure 1 4) and fixed to the fixing rod 4, and the mounting belt 31 is fixedly connected to the side of the fixing rod 4 away from the fixing rod 4. Specifically, in order to adapt to the fixing rods 4 of different diameters and cross-sectional shapes, the mounting belt 31 can be set as a spliced ​​mounting belt, and multiple mounting belts can be spliced ​​on the surface of the fixing rod to fit the shape of the surface of the fixing rod. Optionally, the cross-sectional shape of the fixing rod includes a circle, a square, a hexagon and an octagon, and the installation belt setting method in the embodiment of the present invention is not limited to the cross-sectional shape of the above-mentioned fixing rod.

[0100] In some embodiments, reference Fig.24The mounting belt 31 includes a belt body 31a extending circumferentially and a plurality of third protrusions 31b protruding from the surface of the belt body 31a and distributed at intervals in the circumferential direction. Specifically, arc-shaped third protrusions 31b are equidistantly arranged between the belt bodies 31a, and the third protrusions 31b can be adaptively deformed and extruded according to the contour of the surface of the fixing rod to fit the shape of the fixing rod. Optionally, the mounting belt 31 is set to a flexible material, and the mounting belt can be stored in a roll when placed and transported, occupying a small space. Multiple mounting belts can be connected to form a longer mounting belt by overlapping one end of the third protrusion 31b to adapt to the fixing rod whose circumference is greater than the length of a single mounting belt. Select a length corresponding to the diameter of the installation location, overlap the two third protrusions 31b, and then cut off the excess installation belt. When installing, the installation belt directly connects and matches the two overlapping circular third protrusions 31b together, that is, after overlapping, the outer circular protrusion is pressed outside the inner circular protrusion to open the outer circular protrusion, and the inner circular protrusion is pressed into the outer circular protrusion. The installation belt can form an annular belt on the surface of the installation rod, and then the fixing block 33 of the installation belt is pressed to the outside of the overlapping circular protrusions. The two fixing grooves 33a on the fixing block 33 match the shape of the circular third protrusion 31b. Finally, tighten the fixing bolts at both ends to clamp and fix the matching circular third protrusions 31b to prevent them from detaching.

[0101] In some embodiments, reference Fig.25 The sub-strip device 3 includes a first groove 34a and a second groove 34b extending along the length direction of the sub-strip device 3, and the extension length of the first groove 34a is less than the extension length of the second groove. Fig.24 The width of the second groove 34b is adapted to the third protrusion 31b of the middle mounting belt; the width of the second groove 34b is adapted to the third protrusion 31b, and the length of the groove is greater than or equal to the protrusion. In the process of installing the sub-strip device, two mounting belts are provided, and the first groove 34a and the second groove 34b are respectively adapted to the third protrusion 31b. Fig.23 The first groove 34a can be used as the main mounting matching structure, and the first groove 34a and the upper mounting belt ( Fig.23 After the upper mounting belt (as shown in the figure) is matched, the second groove 34b only needs to match the lower mounting belt in a longer slot range, without the need to accurately determine the slot position of the sub-strip device, thus saving installation time.

[0102] In some embodiments, reference Fig.24, showing that the laser sensing device further includes a reflective insert 32, which is arranged between adjacent sub-strip devices 3. After the sub-strip devices 3 are installed on the mounting belt 31, there will be a gap between two adjacent sub-strip devices 3. If the laser landing point moves from the gap to one end of the image acquisition device, the laser sensing device may not be triggered, resulting in a loophole. Therefore, the embodiment of the present invention further includes a reflective insert 32, which is directly inserted into the gap between the two adjacent sub-strip devices 3 installed. The front end of the reflective insert 32 is provided with an inclined reflective slope. After the laser is irradiated on the reflective slope, it will be reflected to the sub-strip device 3 by the reflective slope. The reflective insert 32 may include a triangular reflective surface, and the end close to the mounting belt 31 is a limiting area. The triangular reflective surface and the limiting area cooperate to limit the reflective insert 32 between the adjacent sub-strip devices 3, thereby ensuring that the reflective insert 32 is stable relative to the sub-strip device 3.

[0103] In some embodiments, reference Fig.26 The laser sensing device also includes: a timer, a counter and a control unit. The timer is used to calculate the duration of laser irradiation detected by the laser sensor; the counter is used to calculate the number of times the laser sensor detects laser irradiation; and the control unit is used to issue a warning signal according to the duration, number of times, and laser color. When collecting laser light, if an alarm signal is issued for some laser landing points that appear briefly on the laser sensing device, it is easy to cause false triggering. Unnecessary triggering will cause the relevant protection devices of the image acquisition device to be accidentally opened, affecting the acquisition quality of the image acquisition device. The laser sensing device in the embodiment of the present invention identifies the landing point of the laser, and the laser that stays briefly does not issue a warning signal. After the laser sensor receives the laser signal, the laser sensor converts the received laser into an electrical signal and transmits it to the control circuit. The control circuit identifies and determines the collected laser duration. If the laser irradiation duration exceeds the set threshold, a warning message is directly issued. If it does not exceed the set threshold, the number of times the laser landing point appears within the set time T is counted. If the number of times the laser landing point appears within a certain period of time exceeds the laser appearance set value N, a warning signal is issued to enable the relevant protection device to act to protect the image acquisition device.

[0104] In some embodiments, reference Fig.26 The laser sensing device is provided with multiple groups of laser sensors, and the color of the front-end filter reflector of each group of laser sensors is also different. When the laser is irradiated into the laser sensing device, only the laser sensor behind the filter reflector with the same color as the laser can receive the laser and transmit an electrical signal. The electrical signals emitted by the laser sensors of the same color group are marked. After the control circuit receives the electrical signal emitted by the laser sensor, the information of the laser falling on the laser sensing device and the color information of the irradiated laser can be obtained.

[0105] In some embodiments, reference Fig.26 The control circuit is used to identify the laser dwelling time and the number of times the laser dwells within a certain period of time when the laser is irradiated on the laser sensing device. When the predetermined conditions are met, a warning signal is sent to the relevant protection device to transmit the laser irradiation warning and the color information of the irradiated laser. The relevant protection device can protect the image acquisition device in advance according to the obtained information. Specifically, the control circuit includes a counter, a timer and a control unit. The counter is used to count the number of times the laser briefly stays, that is, the number of times the received laser sensor sends an electrical signal; the timer is used to set the time T for counting the number of laser stops: and the control unit is used to determine whether the laser landing point is a short-term or long-term stop. If it is a long-term stop, a warning signal is issued. If it is a short-term stop, it is determined whether to send a warning signal to the protection device according to the number of short-term stops of the laser landing point counted by the counter within the set time T; after the electrical signal of the laser sensor is transmitted to the control circuit, part of the electrical signal enters the counter to count the number of times, and the other part enters the control unit to determine whether the laser is a short-term stop or a long-term stop according to the duration of the received electrical signal. For long-term stay, the timer sets a statistical time T and sends the timing start and end information to the control unit. After receiving the electrical signal from the laser sensor, the control unit first determines the duration t of the electrical signal. If t is greater than T, the warning and laser color information are directly sent to the protection device. If t is greater than T, it determines whether the number of laser landing points counted by the counter within T, that is, the number of times the laser sensor sends electrical signals n, is greater than the preset number N. When n is greater than N, the warning and laser color information are directly sent to the protection device. If n is less than N, the control unit clears the counter after the single timing of the timer ends and assumes that the laser landing point at this time is an accidental touch. After the counter is cleared, the next statistical cycle is started to sense the laser and issue an early warning.

[0106] The specific structure of the camera system according to the embodiment of the present invention is described below. Figure 1 As shown, a camera system according to an embodiment of the present invention comprises an image acquisition device, a fixing rod and at least one laser sensing device as in the above embodiment. The image acquisition device includes but is not limited to electronic devices with photo taking and video recording functions such as cameras, webcams, scanners, and mobile phones. The fixing rod is used to fix the image acquisition device at a position close to the upper end of the fixing rod. It should be noted that the upper end refers to the relatively upward end of the fixing rod. The specific image acquisition device can be arranged at the top of the fixing rod, or at the upper part with a certain distance from the top. The laser sensing device can be arranged around the image acquisition device, or it can be arranged on a fixing rod on which the image acquisition device is fixedly mounted. Optionally, the laser sensing device can also be arranged on the surface of other reference objects other than the above-mentioned fixing rod. The application scenario of the laser sensing device in the present application does not limit the setting position of the laser sensing device.

[0107] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A laser sensing device, used to be set in a preset area determined by an image acquisition device, characterized in that: The laser sensing device comprises: A laser collection component, used for collecting laser light incident on the preset area; A laser transmission component is disposed adjacent to the laser collection component and is used to transmit the collected laser; A laser sensor, used for receiving the laser transmitted through the laser transmission element and sending out a sensing signal; The laser collection member includes a light collecting member for collecting laser light incident from different angles and at least partially reflecting the laser light to the outside; The light collecting member comprises: a second body adjacent to the laser transmission member and a plurality of second protrusions at least partially protruding from an outer surface of the second body; Each of the second protrusions includes an arc-shaped incident surface protruding from the outer surface of the second body and a reflective surface and a light-guiding surface located inside the second body; wherein one end of the reflective surface is connected to the edge of the arc-shaped incident surface to form a reflective channel, and the reflective channel is converged inward away from one end of the arc-shaped incident surface to form a light-through hole; one end of the light-guiding surface is connected to the light-through hole to form a light-guiding channel, and the light-guiding channel is adjacent to the laser transmission component.

2. The laser sensing device according to claim 1, characterized in that: The laser collection component comprises: A light collecting component, used to collect laser light incident from different angles; The reflective layer is disposed between the light collecting component and the laser transmission component and is used for reflecting the incident laser to the laser transmission component.

3. The laser sensing device according to claim 2, characterized in that: The light collecting member includes: a first body adjacent to the reflective layer and a plurality of first protrusions protruding from an outer surface of the body.

4. The laser sensing device according to claim 3, characterized in that: The outer surface of the first protrusion is a convex arc surface.

5. The laser sensing device according to claim 1, characterized in that: The plurality of second protrusions are arranged along parallel lines, and each second protrusion has a reflecting surface for reflecting the incident laser light.

6. The laser sensing device according to claim 1, characterized in that: Each of the second protrusions further includes a first reflection surface and a first incident surface protruding from the outer surface of the second body, wherein the angle between the first reflection surface and the outer surface of the body is acute, and the angle between the first incident surface and the outer surface of the second body is acute or right.

7. The laser sensing device according to claim 1, characterized in that: The laser transmission component transmits the received laser to the laser sensor through multiple continuous reflections.

8. The laser sensing device according to claim 1, characterized in that: The direction of the light emitted by the laser collecting component into the laser transmitting component is toward a direction close to the laser sensor.

9. The laser sensing device according to claim 1, characterized in that: The laser sensing device also includes: The filter reflector is arranged between the laser transmission component and the laser sensor, and is used for filtering and reflecting the laser entering the laser sensor.

10. The laser sensing device according to claim 9, characterized in that: The laser sensing device also includes: The light guide block is arranged close to the light filtering and reflecting component and is used for guiding the laser reflected from the light filtering and reflecting component.

11. The laser sensing device according to claim 7, characterized in that: The laser sensing device also includes: A base, used to accommodate the laser transmission component and the laser sensor, and fixedly connected to the laser collection component; Wherein, the light conductivity of the laser transmission component is greater than that of the laser collection component and the base.

12. The laser sensing device according to claim 11, characterized in that: The base includes a bottom wall and side walls arranged around the bottom wall, wherein the bottom wall and the side walls form a cavity for accommodating the laser transmission component and the laser sensor; wherein the laser sensor is arranged at a position adjacent to the bottom wall and the side walls, and the surfaces of the base adjacent to the cavity are both reflective surfaces.

13. The laser sensing device according to any one of claims 1 to 12, characterized in that: The preset area is an area surrounding the image acquisition device.

14. The laser sensing device according to claim 13, characterized in that: The distance from the edge of the laser sensing device in the first direction to the image acquisition device is greater than the distance from the edge of the laser sensing device in the second direction to the image acquisition device.

15. The laser sensing device according to claim 13, characterized in that: The laser sensing device further comprises a first mounting member, wherein the first mounting member comprises: A connecting rod mechanism, used for adjusting the relative position between the laser acquisition component and the image acquisition device; The mounting seat is used to be fixedly connected to the image acquisition device and rotatably connected to the connecting rod mechanism.

16. The laser sensing device according to claim 15, characterized in that: The connecting rod mechanism comprises a first sub-connecting rod mechanism and a second sub-connecting rod mechanism located on both sides of the image acquisition device; the first sub-connecting rod mechanism and the second sub-connecting rod mechanism extend in the same direction; The mounting seat has a fixing hole for fixing connection with the image acquisition device, and two ends of the mounting seat located on both sides of the fixing hole are respectively connected to the first sub-connecting rod mechanism and the second sub-connecting rod mechanism.

17. The laser sensing device according to claim 13, characterized in that: The laser sensing device comprises a plurality of sub-sensing devices, and the sub-sensing devices are detachable.

18. The laser sensing device according to claim 17, characterized in that: The laser sensing device further comprises a second mounting member, wherein the second mounting member comprises: A mounting plate, used for detachably connecting a plurality of said sub-sensing devices; A connecting piece connects the mounting plate and the image acquisition device.

19. The laser sensing device according to claim 18, characterized in that: The mounting plate comprises: A bottom plate, used for connecting with the connecting member; A plurality of partitions protruding from the outer surface of the bottom plate and arranged at intervals, wherein an installation area for installing the sub-sensing device is formed between adjacent partitions and the bottom plate; A reflective member is arranged at one end of the partition away from the bottom plate, and the surface of the reflective member adjacent to the sub-sensing device forms a reflective surface.

20. The laser sensing device according to claim 19, characterized in that: A limiting member is disposed on the outer surface of the bottom plate, which is used to form and release the connection between the sub-sensing device and the bottom plate.

21. The laser sensing device according to claim 18, characterized in that: The connecting member comprises a plurality of connecting rods connected in sequence, and adjacent connecting rods are rotatably connected to each other.

22. The laser sensing device according to any one of claims 1 to 12, characterized in that: The preset area is a surface area of ​​a fixing rod to which the image acquisition device is fixed.

23. The laser sensing device according to claim 22, characterized in that: The laser sensing device comprises a plurality of sub-strip devices, and the sub-strip devices are all arranged along the height direction of the fixing rod.

24. The laser sensing device according to claim 23, characterized in that: The laser sensing device further comprises a reflective inserting strip, wherein the reflective inserting strip is arranged between adjacent sub-strip devices.

25. The laser sensing device according to claim 23, characterized in that: The laser sensing device also includes: The mounting belt surrounds the surface of the fixing rod and is fixed to the fixing rod, and a side of the mounting belt away from the fixing rod is fixedly connected to the sub-strip device.

26. The laser sensing device according to claim 25, characterized in that: The installation belt includes a belt body extending in the circumferential direction and a plurality of third protrusions protruding from the surface of the belt body and distributed at intervals in the circumferential direction.

27. The laser sensing device according to claim 26, characterized in that: The sub-bar device includes a first groove and a second groove extending along a length direction of the sub-bar device, wherein an extension length of the first groove is smaller than an extension length of the second groove.

28. A camera system, characterized in that: include: An image acquisition device, used for acquiring images; A fixing rod, used to fix the image acquisition device at a position close to the upper end of the fixing rod; At least one laser sensing device according to any one of claims 1-27.

Images