A ceiling antenna based on bidirectional gain

Abstract

The present invention relates to a ceiling antenna based on bidirectional gain, comprising a bottom plate, an omnidirectional radiating vibrator and two reflecting plates. A through hole is provided on the mounting surface of the bottom plate, the omnidirectional radiating vibrator is connected to a core wire through the through hole at the bottom, two reflecting plates are arranged on the side of the mounting surface and surround a reflecting area, the omnidirectional radiating vibrator is located in the reflecting area, and when the reflecting plates are arranged in a mirror-symmetrical manner, the center point of the omnidirectional radiating vibrator is coplanar with the symmetry plane of the reflecting plates, and is coplanar with the first plane formed by the connecting line at the minimum spacing of the reflecting plates, and the spacing between the reflecting plates is positively correlated with the distance from the first plane in the direction perpendicular to the first plane. The design effectively concentrates the signal radiation to a narrow and long space by accurately configuring the relationship between the reflecting plate and the omnidirectional radiating vibrator, thereby solving the problem of insufficient signal coverage of traditional antennas in narrow and long environments such as long corridors. Through the mirror-symmetrical arrangement and the optimized configuration of the reflecting plates, the antenna achieves bidirectional gain, ensures the uniformity of signal coverage, and improves the signal coverage effect.

Description

Technical Field

[0001] The invention relates to a ceiling-mounted antenna, in particular to a ceiling-mounted antenna based on bidirectional gain. Background Art

[0002] In modern buildings, wireless communication technology has been widely used in various scenarios, especially in indoor environments such as offices, conference rooms, corridors, etc., where providing good wireless signal coverage is crucial.

[0003] Most existing ceiling antenna systems use omnidirectional antennas, which have the advantage of providing 360-degree uniform signal coverage and are suitable for small spaces and local coverage.

[0004] However, in some special scenarios, such as long corridors, the coverage effect of omnidirectional antennas is limited. Due to the radiation characteristics of omnidirectional antennas, they cannot concentrate the signal in the direction of the corridor, resulting in the need to deploy antennas in multiple locations to ensure continuous signal coverage, which not only increases the construction cost, but also leads to signal waste in the corridor. Therefore, it is urgent to propose a ceiling antenna based on bidirectional gain to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a ceiling antenna which can guide the reflection direction of the signal to a specific direction to meet the bidirectional gain requirements in a narrow and long area by distributing two mirror-symmetrically arranged reflection plates on both sides of an omnidirectional radiating element so that the opposite sides of the two reflection plates and the mounting surface side of the base plate form a reflection area.

[0006] The technical solution adopted by the present invention to solve the above-mentioned problem is: a ceiling antenna based on bidirectional gain includes a bottom plate, an omnidirectional radiating vibrator, a short-circuit connector and two reflecting plates, wherein the bottom plate includes a mounting surface, a through hole is opened on the mounting surface side of the bottom plate, the omnidirectional radiating vibrator is arranged on the mounting surface side, and the bottom of the omnidirectional radiating vibrator passes through the through hole to be connected to the core wire, the short-circuit connector is arranged on the mounting surface side and connected to the omnidirectional radiating vibrator, the two reflecting plates are both arranged on the mounting surface side, and the opposite sides of the two reflecting plates and the mounting surface side are surrounded to form a reflection area, the omnidirectional radiating vibrator is arranged in the reflection area, wherein when the two reflecting plates are in a mirror-symmetrical state, the center point of the omnidirectional radiating vibrator is coplanar with the symmetry plane of the two reflecting plates, and the center of the omnidirectional radiating vibrator is also coplanar with a first plane formed by a line connecting the minimum spacing between the opposite sides of the two reflecting plates, and the spacing between the opposite sides of the two reflecting plates is configured to increase linearly with the distance from the first plane in a direction perpendicular to the first plane.

[0007] Preferably, the first plane is equidistant from the edge of the reflective region in two directions perpendicular to and opposite to each other.

[0008] Preferably, the reflective plate is composed of two flat plates arranged in mirror symmetry, the connecting plane of the two flat plates is coplanar with the first plane, and the connection between the two flat plates has a smooth transition.

[0009] Preferably, the opposite sides of the two reflective plates are convex surfaces, and the convex surfaces are inversely curved surfaces.

[0010] Preferably, the two reflectors are defined as a first reflector and a second reflector, respectively. A first slide groove and a second slide groove are provided on the mounting surface side of the bottom plate. The ceiling antenna further comprises: a first sliding assembly and a second sliding assembly and a driving mechanism, wherein the first sliding assembly is connected to the first reflector, and the first sliding assembly is arranged in the first slide groove, the second sliding assembly is connected to the second reflector, and the second sliding assembly is arranged in the second slide groove, the driving mechanism is connected to the bottom plate, and the driving mechanism is transmission-connected with the first reflector and the second reflector, so that the first reflector and the second reflector move along the track defined by the first slide groove and the track defined by the second slide groove, respectively, and the first reflector and the second reflector are configured to leave a gap between the first reflector and the second reflector when the two move along the track defined by the first slide groove and the track defined by the second slide groove, respectively, wherein when the driving mechanism is in a working state, the first reflector and the second reflector move along the track defined by the first slide groove and the track defined by the second slide groove, respectively, so that the positional relationship between the first reflector and the second reflector is switched between the states of mirror symmetry, mutual parallelism and adjacent edge abutment.

[0011] Preferably, the first slide groove and the second slide groove are both arc-shaped grooves, the diameter of the first slide groove is larger than the diameter of the second slide groove, the second slide groove is located on the inner side of the first slide groove, and the midpoint of the first slide groove, the center of the circle corresponding to the first slide groove, the midpoint of the second slide groove and the center of the circle corresponding to the second slide groove are collinear, and the center of the circle corresponding to the first slide groove is eccentrically arranged toward the inner side of the second slide groove, and the curvature corresponding to the first slide groove is larger than the curvature corresponding to the second slide groove.

[0012] Preferably, the driving mechanism comprises a driver, a transmission assembly, and a first transmission member and a second transmission member. The driver is arranged on the bottom plate, and the driver comprises an output shaft that rotates in a controlled manner. The transmission assembly is connected to the output shaft to move synchronously with the driver. The first transmission member and the second transmission member both move in a controlled manner, the first transmission member is in transmission connection with the first reflector, the second transmission member is in transmission connection with the second reflector, and the first transmission member and the second transmission member are both connected to the transmission assembly.

[0013] Preferably, the first transmission member and the second transmission member are both arc-shaped toothed plates, and a first arc-shaped guide groove for limiting the movement trajectory of the first transmission member and a second arc-shaped guide groove for limiting the movement trajectory of the second transmission member are constructed in the base plate, the first transmission member and the second transmission member are respectively arranged in the first arc-shaped guide groove and the second arc-shaped guide groove, so that the first transmission member and the second transmission member move along the trajectory defined by the first arc-shaped guide groove and the trajectory defined by the second arc-shaped guide groove respectively, the movement trajectory of the first transmission member is concentrically arranged with the movement trajectory of the second transmission member, the diameter of the first transmission member is larger than the diameter of the second transmission member, and the arc corresponding to the first transmission member is larger than the arc corresponding to the second transmission member, and the tooth grooves of the first transmission member are opened on the inner peripheral side, and the tooth grooves of the second transmission member are opened on the outer peripheral side, so that the tooth grooves of the first transmission member and the tooth grooves of the second transmission member are relatively arranged. The transmission assembly includes a first gear and a second gear, both of which are arranged on the output shaft, and the first gear is fixedly sleeved on the outside of the output shaft, the first gear is meshed with the tooth groove of the first transmission member, and the second gear is meshed with the second transmission member, wherein the second gear is configured to rotate around the axis of the output shaft after the second sliding assembly abuts against the inner wall of the second sliding groove.

[0014] Preferably, the ceiling antenna further comprises a torque limiter, which is arranged between the second gear and the output shaft so as to cause relative rotation between the second gear and the output shaft after the torque applied to the second gear exceeds a preset value.

[0015] Preferably, the two reflectors are respectively defined as a first reflector and a second reflector, and an embedded block is provided in the middle of the first reflector and the second reflector on the side facing the mounting surface. Embedding grooves are provided at the mounting surface of the bottom plate at positions corresponding to the two embedded blocks, and the two embedded blocks are plugged into the two embedded grooves in a one-to-one correspondence. The ceiling antenna also includes an adjustment mechanism, and the adjustment mechanism includes a first adjustment unit and a second adjustment unit. The first adjustment unit is connected to the first reflector to make the two ends of the first reflector move closer or farther away when the adjustment mechanism is running, so that the reverse bow angle of the first reflector changes. The second adjustment unit is connected to the second reflector to make the two ends of the second reflector move closer or farther away when the adjustment mechanism is running, so that the reverse bow angle of the second reflector changes.

[0016] The beneficial effects of each embodiment of the present invention are as follows:

[0017] 1. Due to the adoption of a ceiling antenna design based on bidirectional gain, especially the optimization of the configuration of the reflector and omnidirectional radiator, the signal can be effectively concentrated to the direction of narrow spaces such as corridors, thus solving the problem of insufficient signal coverage of existing omnidirectional antennas in corridor environments. This technical solution enables the antenna to achieve bidirectional gain through the mirror-symmetrical setting of the reflector and the precise positioning of the omnidirectional radiator, while ensuring signal coverage in the corridor area and avoiding unnecessary signal waste. It effectively improves the signal coverage range and uniformity, reduces the need to deploy multiple antennas, and reduces construction costs.

[0018] 2. Due to the use of the reverse-bow reflector technology, the electromagnetic wave is affected by the curvature during the reflection process, and the propagation direction of the reflected signal can be accurately guided. Especially in specific spatial structures such as narrow corridors, the reverse-bow reflector can effectively change the propagation angle of the signal, avoiding the limitation of traditional flat reflectors that only reflect the signal in the same direction. This design allows the signal to cover the target area more widely and evenly, significantly improving the signal propagation effect, thereby optimizing the performance of wireless communication in complex indoor environments.

[0019] 3. Due to the design of a reflector with adjustable back bow angle, combined with the precise control of the adjustment mechanism, the first telescopic member and the second telescopic member, the antenna can dynamically adjust the focus range and propagation mode of the signal according to the width of the narrow aisle. Specifically, when the back bow angle increases, the signal will be concentrated in the central area of ​​the aisle, which is suitable for narrow aisles, and when the back bow angle decreases, the signal will spread more widely to both sides of the aisle, which is suitable for aisles with wider widths. This technical means effectively optimizes the coverage of wireless signals in the aisle, which can not only ensure the concentration of the signal, but also adapt to the needs of aisles of different widths, and improve the flexibility and uniformity of signal coverage. By precisely adjusting the angle of the reflector, the antenna can provide the best wireless signal distribution in different spatial structures, ensuring the quality and efficiency of signal coverage. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic structural diagram of a ceiling antenna in one embodiment of the present invention is shown.

[0021] Figure 2 A top view of a first reflecting plate and a second reflecting plate in a mirror-symmetrical state is shown in one embodiment of the present invention.

[0022] Figure 3 A top view of a first reflecting plate and a second reflecting plate in a state where adjacent edges of the first reflecting plate and the second reflecting plate are in contact with each other is shown in one embodiment of the present invention.

[0023] Figure 4 A top view showing a first reflector and a second reflector in a parallel state according to an embodiment of the present invention is shown.

[0024] Figure 5 A schematic structural diagram showing a first reflective plate, a second reflective plate and a driving structure in a connected state in one embodiment of the present invention is shown.

[0025] Figure 6 A top view of a first reflector plate, a second reflector plate and a driving structure in a connected state in one embodiment of the present invention is shown.

[0026] Figure 7 A bottom view of a first reflecting plate and a second reflecting plate in a mirror-symmetrical state is shown in one embodiment of the present invention.

[0027] Figure 8 A schematic structural diagram showing a first reflecting plate and a second reflecting plate in a mirror-symmetrical state in one embodiment of the present invention is shown.

[0028] Fig. 9 A schematic structural diagram showing an adjustment structure in an embodiment of the present invention in a connected state with a first reflector plate and a second reflector plate.

[0029] Fig.10 A bottom view showing a state in which the adjustment structure, the first reflector plate and the second reflector plate are connected in one embodiment of the present invention.

[0030] Fig.11 A schematic structural diagram showing an adjustment plate and a reflection plate in a connected state in one embodiment of the present invention is shown.

[0031] Wherein: 10, bottom plate; 110, mounting surface; 111, through hole; 112, first slide groove; 113, second slide groove; 114, first arc guide groove; 115, second arc guide groove; 116, embedded groove; 117, first adjustment groove; 118, second adjustment groove; 20, omnidirectional radiation vibrator; 30, short-circuit connector; 40, reflector; 410, first reflector; 420, second reflector; 430, embedded block; 50, first sliding assembly; 60, second sliding assembly; 70, driving mechanism; 710, output shaft; 720, transmission assembly; 721, first gear; 722 , the second gear; 730, the first transmission member; 740, the second transmission member; 80, the adaptive mechanism; 810, the adjustment plate; 811, the movable groove; 820, the guide member; 830, the elastic member; 90, the adjustment mechanism; 910, the first adjustment unit; 911, the first adjustment assembly; 912, the sliding member; 920, the second adjustment unit; 921, the second adjustment assembly; 922, the second sliding member; 930, the first telescopic member; 931, the first telescopic end; 940, the second telescopic member; 941, the second telescopic end; 100, the reflection area; 1010, the exit; 1020, the opening. DETAILED DESCRIPTION

[0032] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0033] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description created by the present application, unless otherwise specified, "multiple" means two or more.

[0034] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood by specific circumstances.

[0035] See also Figure 1 In a preferred embodiment of the present application, a ceiling antenna based on bidirectional gain is proposed, which is used to enhance the signal in a specific direction in a target area, and the target area is a long and narrow area such as a corridor. Among them, the ceiling antenna is a wireless communication antenna specially designed for installation on an indoor ceiling. Its main feature is that the installation method is easy to hide and beautiful, and it can provide good signal coverage. It is suitable for indoor environments such as offices, conference rooms, shopping malls, corridors, etc. Ceiling antennas are generally used in wireless communication systems such as Wi-Fi, mobile communications, and the Internet of Things (IoT). Specifically, the ceiling antenna includes a base plate 10, an omnidirectional radiator 20, and a short-circuit connector 30, wherein the base plate 10 includes a mounting surface 110, and a through hole 111 is opened at the mounting surface 110 of the base plate 10. The omnidirectional radiator 20 is arranged on the side of the mounting surface 110, and the bottom of the omnidirectional radiator 20 passes through the through hole 111 to connect with the core wire, and the short-circuit connector 30 is arranged on the side of the mounting surface 110, and is electrically connected between the omnidirectional radiator 20 and the base plate 10 to achieve DC grounding.

[0036] in:

[0037] The bottom plate 10 is the main supporting part of the ceiling antenna and has a mounting surface 110, which is used to fix other parts of the antenna, and the mounting plane is specifically embodied as a plane. The size of the bottom plate 10 is usually designed according to the requirements of the installation environment to adapt to different ceiling structures, and the bottom plate 10 can usually be made of materials such as ABS, aluminum alloy, etc. to ensure long-term stable operation, and the bottom plate 10 can also play a role in shielding the rear (away from the mounting surface 110) signal. The through hole 111 on the mounting surface 110 is usually opened at the center of the mounting surface 110, so that the bottom of the omnidirectional radiator 20 passes through and connects with the core wire, thereby completing the electrical connection of the signal transmission.

[0038] The omnidirectional radiator 20 is the core component of the ceiling antenna, responsible for generating electromagnetic waves and transmitting wireless signals. The oscillator is arranged on the side of the mounting surface 110, and is usually made of PCB (printed circuit board) or metal material to ensure efficient electromagnetic wave emission. The structural design of this type of oscillator has omnidirectional radiation characteristics and can provide uniform signal coverage in the horizontal direction. In addition, the bottom of the oscillator is electrically connected to the core wire through the through hole 111 to ensure signal transmission and reception.

[0039] It should be noted that the reason why the omnidirectional radiating vibrator 20 is selected in this embodiment is to expand the scope of use of the ceiling antenna in this application, especially in other areas except narrow and long areas such as corridors, such as corner areas (corresponding to the adjacent edge abutment mode of the two reflectors 40 described later) and unidirectional large-scale coverage areas (corresponding to the parallel mode of the two reflectors 40 described later). In contrast to the omnidirectional radiating vibrator antenna in this embodiment is the existing indoor directional antenna, the vibrator of this directional antenna can usually only achieve strong signal gain in a specific direction, so that the signal gain and coverage range in the specific direction are further enhanced, but it has the defect of a single application scenario when in use, and it is difficult to be applied to the above-mentioned corridor corner area and the scene where a unidirectional large-scale coverage area is required.

[0040] The short-circuit connector 30 is used to realize the function of electrical grounding to ensure the electrical stability and safety of the antenna. The short-circuit connector 30 is arranged on the mounting surface 110 side of the base plate 10, and is electrically connected to the omnidirectional radiation oscillator 20 and the base plate 10 to realize grounding. This component plays a basic role in ensuring the normal operation of the device in the system.

[0041] When the ceiling antenna proposed in this embodiment is applied to a long and narrow area such as a corridor or a hallway, Figures 1 to 4As shown, in order to enhance the signal in the length direction of the narrow and long area, in the present application, the ceiling antenna also includes two reflection plates 40, and both are arranged on the side of the installation surface 110. The opposite sides of the two reflection plates 40 and the side of the installation surface 110 together form a reflection area 100, and the omnidirectional radiation vibrator 20 is arranged in the reflection area 100.

[0042] Specific:

[0043] The two reflective plates 40 and the reflective area 100 formed by them are a key component in the design of the ceiling antenna of this embodiment. Their function is to enhance the signal gain in specific directions (two opposite directions parallel to the length direction of the narrow and long area) by directing the final direction of electromagnetic wave reflection.

[0044] The shape of the reflective plate 40 can be embodied as a rectangular plate or the like in a specific manner. Taking a rectangular plate (not shown in the figure) as an example, two reflective plates 40 are parallel or at an angle to each other, and both reflective plates 40 are arranged perpendicular to the mounting surface 110. The material of the reflective plate 40 is generally selected from a material with a strong electromagnetic wave reflection effect, which can be selected according to the usage scenario, and will not be elaborated here.

[0045] The reflection area 100 is an electromagnetic wave reflection space formed by the opposite sides of the two reflection plates 40 and the mounting surface 110. The reflection area 100 usually has two outlets 1010 facing each other and an opening 1020 parallel to the mounting surface 110, wherein the outlets 1010 on the two opposite sides are formed by the adjacent edges of the two reflection plates 40. However, in some specific cases, the reflection area 100 has only one outlet 1010, and the other outlet 1010 disappears due to the adjacent edges of the two plates abutting each other (corresponding to the two reflection plates 40 being in the adjacent edge abutting state described later). Figure 3 As shown. In addition, in order to reduce the gain of electromagnetic waves in the direction of the opening 1020, the two reflectors 40 can also be installed with a baffle (not shown in the figure) parallel to the mounting surface 110 on the side away from the mounting surface 110. The baffle is made of the same material as the reflector 40 and can guide the reflection of electromagnetic waves. The two baffles always cover the opening 1020, and in order to avoid the two baffles from interfering with each other when the two reflectors 40 move, there should be a height difference between the two baffles and the mounting surface 110. It should be noted that when the ceiling antenna in this embodiment is installed in a narrow and long area such as a corridor, the bottom plate 10 will always be parallel to the ceiling to ensure that the polarization of the antenna remains in the expected direction, and the orientations of the two outlets 1010 should be parallel to the length direction of the narrow and long area (such as a long corridor, corridor, etc.), so that the electromagnetic waves emitted by the omnidirectional radiator 20 are finally guided to the two outlets 1010 facing each other, and emitted from the two outlets 1010 in opposite directions, thereby meeting the bidirectional gain requirements of the ceiling antenna in the narrow and long area.

[0046] Therefore, under the guidance of the two reflectors 40, the electromagnetic waves emitted by the omnidirectional radiator 20 will be superimposed in the direction of two or one exit 1010 to form a stronger signal in the corresponding direction. Therefore, the setting of the two reflectors 40 effectively improves the signal gain of the antenna in the corridor direction, while reducing the signal loss in unnecessary directions to meet the signal coverage requirements of the corridor scene.

[0047] Furthermore, the two reflective plates 40 are arranged to be in a mirror-symmetrical state, at which point the center point of the omnidirectional radiating vibrator 20 is coplanar with the symmetry planes of the two reflective plates 40, and the center of the omnidirectional radiating vibrator 20 is also coplanar with a first plane (not shown) formed by a line connecting the minimum spacing between opposite sides of the two reflective plates 40, the first plane is equidistant from the edge of the reflective area 100 in two directions perpendicular to and opposite to each other, and the spacing between opposite sides of the two reflective plates 40 is configured to increase linearly with the distance from the first plane in a direction perpendicular to the first plane.

[0048] in:

[0049] The setting of "the center point of the omnidirectional radiator 20 is coplanar with the symmetry planes of the two reflectors 40" makes the omnidirectional radiator 20 located in the middle of the two reflectors 40, thereby ensuring that the center of the omnidirectional radiator 20 is aligned with the symmetry planes of the two reflectors 40. The core purpose of this design is to guide the electromagnetic waves emitted by the omnidirectional radiator 20 evenly between the two reflectors 40, so that the reflectors 40 reflect the signals evenly without biasing to any side, thereby ensuring that the coverage of the signals after reflection is more uniform and symmetrical. The reflectors 40 designed in this way can more effectively maintain the uniformity of the signals while improving the directivity and intensity of signal radiation, avoiding the problem of too strong signals on one side and too weak signals on the other side. Especially when the reflectors 40 are used to enhance signals in a specific direction, the design of keeping the center of the omnidirectional radiator 20 coplanar with the symmetry planes of the two reflectors 40 helps to avoid unnecessary signal deviations.

[0050] The premise of “the center of the omnidirectional radiator 20 is also coplanar with the first plane formed by the line connecting the minimum spacing between the opposite sides of the two reflectors 40” is that “the first plane is equidistant from the edge of the reflection area 100 in two directions perpendicular to it and facing oppositely”, that is, the reflector 40 is a completely symmetrical structural design, and the symmetry plane of a single reflector 40 passes through the center of the omnidirectional radiator 20, thereby ensuring the symmetry of the reflection area 100 in the direction of the exit 1010, so that the reflection effect of the reflector 40 on the signal remains uniform, avoiding the situation of uneven signal strength in the reflection area 100, and further ensuring that the signal strength and propagation direction guided to the two opposite exits 1010 are roughly the same. Specifically, “the center of the omnidirectional radiator 20 is coplanar with the first plane” means that the center of the omnidirectional radiator 20 is exactly on the line connecting the minimum spacing between the two reflectors 40, which helps to ensure the symmetry and consistency of the effect of the reflector 40 in the propagation of signals in the reflection area 100 toward the two exits 1010.

[0051] When the electromagnetic wave signal emitted by the omnidirectional radiator 20 is within the reflection area 100, "the center of the omnidirectional radiator 20 is coplanar with the symmetry plane of a single reflector 40" means that the center of the omnidirectional radiator 20 coincides with the symmetry plane of a single reflector 40. This symmetrical design makes the signal emitted from the omnidirectional radiator 20 symmetrical when reflected. In other words, the signal will be evenly reflected to the exits 1010 on both sides of the reflection area 100 under the guidance of the reflector 40. For narrow and long areas (such as corridors), after the signal is emitted from the omnidirectional radiator 20, it will be evenly guided by the two reflectors 40 and concentrated at the two exits 1010 of the reflection area 100, thereby enhancing the signal propagation in the length direction of the corridor. Therefore, the reflector 40 of this design has more uniform signal coverage and strong directionality, ensuring the signal strength and propagation distance in the direction of the two exits 1010. The condition that "the first plane is at an equal distance from the edge of the reflection area 100 in two directions perpendicular to it and facing opposite to it" stipulates that the relative spacing between the two outlets 1010 is equal, ensuring the symmetry of the two sides of the reflection area 100 and avoiding the imbalance of the signal in the reflection area 100. Because if the boundary distances of the reflection area 100 are not equal, the signal will be reflected more strongly to one side, resulting in uneven distribution of the signal. By making the distances in the two directions equal, the signal is evenly guided to the two outlets 1010 of the reflection area 100, ensuring the consistency of the signal strength and propagation direction in the reflection area 100, thereby enhancing the signal coverage in the corridor direction. Therefore, when the electromagnetic wave signal is in the reflection area 100, the combination of the above two conditions can make the reflection of the signal in the reflection area 100 evenly and symmetrically enhanced, and the signal strength on any side is not too large or too small. This symmetry not only improves the signal strength in the reflection area 100, but also effectively reduces signal interference and unnecessary loss.

[0052] After the electromagnetic wave signal emitted by the omnidirectional radiator 20 is emitted from the reflection area 100, the above two conditions also have an important influence on the direction and intensity of signal propagation. First, the condition that "the center of the omnidirectional radiator 20 is coplanar with the symmetry plane of the reflector 40" after the signal leaves the reflection area 100, since the omnidirectional radiator 20 is located on the symmetry plane of the reflector 40, the signal emitted by the oscillator is guided by the two reflectors 40 and concentrated to the exits 1010 at both ends of the reflection area 100. At this time, the signal will be emitted evenly from the two exits 1010, avoiding the problem of the signal being biased to one side, especially in a narrow area such as a corridor, the signal needs to be evenly propagated to both ends to ensure that the signal strength is consistent in the entire corridor direction. The condition that "the first plane is at an equal distance from the edge of the reflection area 100 in two directions perpendicular to it and facing oppositely" affects the angle and intensity of the signal emitted to both sides of the corridor after leaving the reflection area 100. Since the two exits 1010 face the two ends of the reflection area 100 and have the same directionality, the signal will not be overly concentrated or dispersed, thereby ensuring the uniformity of signal coverage. In addition, due to the design and spacing control of the reflector 40, the signal will have a strong directionality when emitted from the two exits 1010, and the waste of the signal in other directions is avoided. Moreover, the balanced design of the two exits 1010 ensures that the signal propagation distance on both sides of the corridor is the same, thereby improving the signal coverage effect of the corridor.

[0053] In summary, the above two conditions make the signal help avoid signal deflection or distortion. When the signal is in the reflection area 100, the signal is evenly and symmetrically enhanced, which will not cause the signal strength on one side to be too large or too small. After the signal is emitted from the reflection area 100, when the signal is evenly emitted from the two exits 1010 to the two ends of the corridor, its strength and propagation direction will be consistent, making the signal coverage of the entire corridor more uniform, ensuring the consistency of signal strength on both sides of the corridor. Therefore, through this design, the ceiling antenna in this embodiment can effectively enhance the signal in a narrow and long area (such as a corridor), while avoiding signal waste and uneven coverage.

[0054] The purpose of setting the condition that "the spacing between the opposite sides of the two reflective plates 40 is configured to increase linearly with the distance from the first plane in a direction perpendicular to the first plane" is to ensure that as the reflective plates 40 move away from the center of the oscillator, the spacing between the opposite sides of the two reflective plates 40 gradually increases, that is, the spacing between the opposite sides of the two reflective plates 40 increases with the distance from the first plane, so that the signal emitted from the outlet 1010 covers a wider area. Specifically:

[0055] The above conditions ensure the symmetrical structure of the two reflectors 40, and the change in the spacing between them is relatively consistent with the distance on the first plane, which helps to ensure that the signal will not be deflected or distorted during the reflection process due to the uneven spacing of the reflectors 40. The reflection and propagation paths of the signals will be more symmetrical, so that when the signals are emitted from the reflection area 100, they can evenly cover both ends of the target area (such as a corridor) instead of being concentrated on one side.

[0056] The change in the spacing of the reflector 40 directly affects the reflection effect of the signal. Controlling the change in spacing can optimize the reflection of electromagnetic waves and ensure the uniformity and stability of signal coverage. This is because the reflection angle of the signal can be changed by adjusting the spacing between the reflector 40. As the spacing changes, the reflection path of the signal will also be adjusted accordingly, so that the signal can better adapt to different installation environments. For example, when the spacing between the reflector 40 increases, the reflection angle becomes larger, so that the signal covers a wider area. In addition, as the spacing changes, the reflector 40 can effectively adjust the propagation direction of the electromagnetic wave to ensure that the intensity and directionality of the signal in a specific area are more in line with the requirements. In applications in narrow and long areas (such as corridors), adjusting the spacing of the reflector 40 can ensure that the signal is more balanced in the longitudinal or lateral coverage, avoid the signal from being too concentrated in a certain direction or angle, and ensure that the signal can be stably propagated throughout the area. Furthermore, different installation environments and spatial structures (such as the shape of the ceiling, the length and width of the corridor, etc.) will affect the effect of signal propagation. The adjustment of the spacing of the reflector 40 allows the antenna to flexibly respond to these changes and optimize the effect of signal reflection. For example, a wider corridor may require a larger spacing between the reflectors 40 to ensure the lateral gain of the signal, while a narrower corridor may control the longitudinal gain of the signal by reducing the spacing.

[0057] In addition, the design can also ensure that the propagation angle of the signal remains consistent, especially in narrow areas such as corridors. When the signal is emitted from both ends of the reflection area 100, the propagation direction of the signals on both sides can be ensured to be consistent, avoiding the situation where the signal is biased to one side or uneven in strength. By optimizing the reflection path of the signal, the directionality and propagation strength of the signal are balanced, thereby ensuring full coverage and continuity of the signal in the corridor.

[0058] Furthermore, the above conditions also take into account the lateral gain of the signal (in the width direction of the corridor). In the lateral direction, the design of increasing the spacing between the reflective plates 40 adjusts the reflection angle of the signal so that the signal can also be guided to a certain extent in this direction. As the reflection angle increases, the radiation of the signal will gradually cover the area in the width direction, avoiding excessive or insufficient concentration of the signal in this direction, and ensuring signal coverage in the width direction of the corridor. Especially when the corridor is wide, this design can effectively enhance the lateral gain of the signal, avoid the signal being concentrated in the depth direction and ignoring the width direction, and ensure that the signal can cover the width area within the target range of the corridor. The specific principle is:

[0059] First, by adjusting the spacing of the reflective plates 40, especially in a positive correlation with the distance of the first plane, the angle at which the signal is reflected is actually adjusted. If the spacing between the two reflective plates 40 increases, the angle of signal reflection will also increase, which means that the propagation path of the signal will become wider and can cover a wider area. This design helps guide the signal emitted by the omnidirectional radiator 20 to a wider direction, ensuring that the signal not only covers the depth direction of the narrow and long area, but also can effectively propagate in the horizontal direction (i.e., the width direction of the corridor).

[0060] Secondly, if the spacing between the reflectors 40 is too small, the reflection angle will be relatively small, resulting in excessive concentration of the signal in the longitudinal direction (i.e., the length direction of the corridor) while ignoring the width direction. This may result in insufficient signal strength in the width direction and fail to ensure balanced signal coverage on both sides of the corridor. Therefore, by designing a positive correlation between the spacing between the reflectors 40 and the first plane distance, when the spacing between the reflectors 40 increases, the reflection angle of the signal will increase, thereby avoiding excessive or insufficient concentration of the signal in the width direction and ensuring that the signal is evenly covered on both sides of the corridor.

[0061] Moreover, in a wide corridor, the omnidirectional radiator 20 alone may not be able to effectively cover both sides of the corridor, especially when the ceiling antenna is installed in a relatively fixed position. At this time, the design of the reflector 40 plays a crucial role. Therefore, by adjusting the spacing between the reflectors 40, the signal can obtain appropriate gain in the width direction, thereby enhancing the signal's propagation capability in the width direction. This gain ensures that the signal will not be unable to cover in the width direction of the corridor due to a small reflection angle, especially when the corridor is wide, the lateral gain of the signal is particularly important.

[0062] With the design of increasing the spacing between the reflectors 40, the reflection angle of the signal increases, and the signal will gradually expand in the width direction. This expansion effect ensures the balance of signal coverage in the width direction and avoids the signal being too concentrated only in the depth direction. Especially when the width of the corridor is large, this design can effectively enhance the lateral gain, so that the signal can cover the entire width of the corridor, ensuring that the signal strength remains consistent on both sides of the corridor.

[0063] Therefore, the design of "the spacing between the opposite sides of the reflector 40 is positively correlated with the distance from the first plane" optimizes the angle of signal reflection and the propagation range by controlling the positive correlation between the spacing between the reflector 40 and the distance from the first plane. As the spacing between the reflector 40 increases, the angle of signal reflection will also increase, and the coverage of the signal will expand accordingly. In corridors or other narrow areas, this condition ensures that the coverage of the signal is not only limited to the depth direction, but can also be effectively extended to the lateral direction, avoiding signal concentration and waste. Especially in the case of a large corridor width, increasing the spacing between the reflector 40 can enhance the lateral gain and ensure uniform coverage of the signal across the entire width.

[0064] In summary, when the above four conditions work together, the reflector 40 can not only guide the signal evenly, but also adjust the reflection angle and propagation range of the signal according to the different requirements of the installation environment, especially in narrow and long areas (such as corridors, hallways, etc.), to ensure that the signal can be evenly covered in both the depth and width directions to avoid signal concentration or insufficiency. At the same time, this design can also improve the stability of the signal and the continuity of coverage, ensuring that the signal strength is consistent throughout the entire area.

[0065] It is understandable that, although the phase difference will have some influence on the signal when the electromagnetic wave is reflected between the two reflectors 40, the overall effect is to enhance the signal strength, especially under the mirror symmetry design of the reflector 40 and the interference effect of the reflected wave. Specifically:

[0066] In the directions toward the two exits 1010, respectively, due to the symmetrical design of the reflector 40, the reflected wave and the antenna transmission wave will form in-phase interference in these two directions, that is, their phase difference is close to 0 or an integer multiple of 2π, so that the amplitude of the signal will be superimposed, thereby enhancing the signal strength. This effect plays a key role in the signal gain in the direction of corridor extension, increasing the concentration of the antenna radiation signal. Among them, at certain specific angles, the phase difference between the reflected wave and the antenna transmission wave may be close to π or an odd multiple of π, which will cause anti-phase interference, thereby weakening or offsetting the signal strength. However, although this effect may occur, since the reflector 40 is mirror-symmetrical, the influence of anti-phase interference will be minimized, especially in the signal gain direction of the target. Therefore, although the phase difference between the reflected wave and the original wave may affect the signal strength, the mirror-symmetrical setting of the reflector 40 usually maximizes the in-phase interference effect, thereby enhancing the signal gain in the direction of corridor extension. Therefore, the influence of the phase difference is mainly reflected in the optimization design, and the overall effect is to enhance the signal strength in these specific directions. Moreover, since the two reflectors 40 are arranged in mirror symmetry, the phase difference between the reflected wave and the direct radiation wave of the antenna is easier to maintain in phase, thereby enhancing the overall signal strength. Therefore, in the direction of the two exits 1010 facing each other parallel to the extension direction of the corridor, the signal gain will become stronger. This design effectively improves the signal coverage efficiency of the antenna in the corridor direction through the guiding and enhancing effect of the reflector 40, while reducing the signal loss in unnecessary directions, which is suitable for the signal coverage requirements of the long corridor scene.

[0067] In order to further optimize the signal propagation effect, in some embodiments, such as Figures 1 to 6 and Fig. 9 As shown, the opposite sides of the two reflective plates 40 are both convex surfaces, and the convex surfaces are inversely curved surfaces.

[0068] Specifically, the structure of the reverse-bow reflector 40 is similar to a curved mirror, whose surface is curved and usually appears as a convex surface. Unlike the traditional flat reflector 40, it does not simply reflect the waves in the same direction. Instead, due to the influence of the surface curvature, the reflected electromagnetic waves will be guided to different angles. The design of the reverse-bow structure causes the propagation direction of the electromagnetic wave to change to a certain extent due to the curvature of the reflecting surface when the electromagnetic wave is reflected. In other words, different surface points have different reflection angles for the incident wave, so that the signal can be guided to a specified direction, especially in certain specific spatial structures (such as long and narrow corridors). This design helps the signal cover a wider area.

[0069] The reflection principle of the two conventional parallel planar reflectors 40 is relatively simple, and it reflects the incident wave according to the law of reflection, that is, the incident angle is equal to the reflection angle. The planar reflector 40 does not make any adjustment to the propagation angle of the signal, so in some cases, the signal will be diffused or distorted, especially in the application scenario where the signal needs to be directed or enhanced in a certain direction, and the propagation direction of the signal is not accurate enough.

[0070] The two symmetrically arranged raised inversely arched reflectors 40 can adjust the reflection angle by their curvature, thereby concentrating the signal or guiding the signal to the target direction. Specifically, when the electromagnetic wave hits the curved reflective surface, the curvature determines the change in the reflection angle of the signal. The curvature of the reflective surface can make the signal more accurately focused or directed, so that the reflected wave no longer presents a wide diffusion state, but is concentrated in a certain area.

[0071] Moreover, due to its curvature, the inverse-bow reflecting surface usually concentrates the reflected waves in a specific direction, thereby enhancing the directivity and directionality of the signal. For example, when the curvature of the reflecting plate 40 is properly controlled, the signal will propagate at a specific angle and a narrower range after reflection, thereby avoiding the excessive scattering that may be caused by the traditional flat reflecting plate 40. Moreover, the reflection effect of the traditional flat reflecting plate 40 often causes the signal to scatter in different directions, the coverage range of the signal may be uneven, and even cause the signal intensity to be too low in certain areas. The inverse-bow structure ensures that the reflection angle of the signal is more concentrated by controlling the curvature, reduces the excessive diffusion of the signal after reflection, and thus ensures that the signal intensity and propagation effect in the target area are more accurate.

[0072] Moreover, the curvature change of the reflector 40 can effectively control the intensity and direction of the signal reflection. In some designs, the curvature of the reflector 40 can change with different parts of the reflective surface, so that the signal can be further adjusted according to needs when it is reflected, thereby optimizing the propagation effect of the signal. For example, when it is necessary to enhance the signal in a certain direction, by increasing the curvature of the area, it can be ensured that the signal is propagated more concentratedly in that direction.

[0073] In summary, the inversely-bowed reflector 40 finely adjusts the reflection angle of the electromagnetic wave by changing its curvature, so that the signal will not be excessively diffused like the flat reflector 40 after reflection, but can be more accurately concentrated or directed, especially in a narrow and long area, which can enhance the signal's directivity and propagation effect. This design optimizes the signal propagation path, ensures more uniform and stronger signal coverage, and avoids signal distortion or diffusion that may be caused by the traditional flat reflector 40.

[0074] This embodiment optimizes the geometric shape of the reflector 40, the configuration of the reflection area 100, and the reverse-bow arc surface design, and the antenna solution significantly improves the directionality and enhancement effect of signal propagation in a narrow and long area. The convex and reverse-bow arc surface design not only improves the reflection efficiency and optimizes the signal propagation path, but also minimizes signal waste and interference, thereby making the signal more stable and uniform in a narrow and long space, and improving the quality of signal coverage. This design is particularly suitable for indoor environments that require efficient and directional enhanced signals, and has significant technical advantages.

[0075] In other embodiments, the reflective plate 40 may also be composed of two mirror-symmetrically arranged flat plates (not shown in the figure), the connecting surfaces of the two flat plates are coplanar with the first plane, and the connection between the two flat plates has a smooth transition.

[0076] Specifically, the two flat plates are respectively located on both sides of the reflection area 100, symmetrically installed to each other, and form the reflection area 100 with the omnidirectional radiation vibrator 20. The mounting surfaces 110 of the two flat plates are coplanar with the first plane, that is, the connection surface of the flat plate is consistent with the direction of the signal emitted by the omnidirectional radiation vibrator 20, so that the signal can maintain a certain directionality when passing through the reflection plate 40. In addition, the connection between the two flat plates adopts a smooth transition design to avoid sharp transition edges, which helps to reduce the reflection loss of the signal, ensure the stable reflection of the signal and reduce unnecessary signal interference caused by the edge effect. In this embodiment, the flat reflector 40 can be made of metal or conductive materials (such as aluminum alloy or copper) to enhance the reflection ability of the signal, and the size is adjusted according to actual needs to adapt to the signal coverage requirements of different spaces. The design of the flat plate is simpler than the curved reflector 40, and the difficulty of production and installation is relatively low.

[0077] During signal propagation, there are some differences between the two symmetrically formed inversely arched reflectors 40 and the reflectors 40 symmetrically formed by two flat plates, especially in terms of the depth propagation concentration of the signal.

[0078] The two anti-bow surfaces face each other, forming a "V" or "U" shaped reflection area 100. At this time, the curvature of each reflector 40 will be coordinated with the relative reflective surface, which is equivalent to reflecting and guiding the electromagnetic waves from the omnidirectional radiator 20 to a specific direction. The two symmetrical anti-bow surfaces will converge the electromagnetic waves along the depth direction of the reflection area 100 through their reflection effect, forming an effect similar to "concentrated reflection". The electromagnetic waves will not diffuse evenly like a single anti-bow reflector 40, but will be concentrated and guided to the target area. In addition, since the two reflectors 40 are mirror-symmetrical, after the reflected waves are reflected by the two plates, they will intersect in the depth direction of the symmetrical area and enhance the aggregation of the signal. This effect is similar to the light focusing effect produced by two mirror reflections. Although it cannot completely "focus" to a point like a concave mirror, it can enhance the signal in a specific direction.

[0079] The two curved surfaces are oriented relative to each other to guide the signal to a specific area. The two curved surfaces work together to keep the signal highly concentrated in the depth direction. In particular, when the angle and curvature of the reflector 40 are properly designed, the signal will not spread too much to both sides, but will form a relatively concentrated propagation path in the reflection area 100. Through this design, the directionality and concentration of the signal are enhanced, especially in the depth direction where the signal needs to be covered. This symmetrical reflection design can provide stronger signal strength and better propagation effect.

[0080] Therefore, when the two reflective plates 40 have their curved surfaces facing each other, they function to enhance the directivity and concentration of the signal, especially in the depth direction. Through the symmetrical reflection design, the signal will not diffuse excessively, but can be effectively guided to the predetermined target area, improving the propagation effect and coverage of the signal. This design combines the advantages of the curved reflective plates 40, while avoiding excessive diffusion through a symmetrical layout, and can provide more accurate signal directionality and stronger propagation effects.

[0081] For the two flat reflectors 40 arranged in mirror symmetry, the surface of the reflector 40 composed of two symmetrical flat plates is flat and has no curvature. Although the design of the flat plate can enhance the directivity of the signal through a symmetrical layout, it usually cannot form a focusing effect like the reverse-bow reflector 40. During the reflection process of the flat reflector 40, the signal mainly propagates along the normal direction of the reflector 40, the propagation angle is relatively fixed, and the concentration of the signal may be lower. Due to the linear characteristics of the structure of the flat reflector 40, the reflected wave may spread widely in the depth direction. Although the symmetrical design of the flat plate helps to reduce the scattering of the signal, the concentration of the signal is not as strong as that of the reverse-bow reflector 40. In the depth direction, the signal will expand relatively evenly, and the reflection area 100 may be larger, which is suitable for areas that require wider coverage.

[0082] Therefore, the flat reflector 40 is suitable for applications that require a wide coverage area, but has poor concentration in the depth direction. Therefore, the signal concentration in the depth direction is slightly inferior to that of the inverted arcuate reflector 40, especially in a long and narrow space, the effect of the flat reflector 40 may not be as accurate as that of the inverted arcuate reflector 40.

[0083] In summary, the inverse-bow reflector 40 has a high signal concentration in the depth direction, and can effectively concentrate the reflected waves to a specific area, and is particularly suitable for signal propagation in narrow and long areas. The flat reflector 40 has a low signal concentration in the depth propagation direction, and the signal expansion is wider, which is suitable for environments that require a wide range of signal coverage, but is not suitable for achieving high concentration in the depth direction. Therefore, if it is necessary to increase the signal concentration and reduce diffusion in the depth direction, the inverse-bow reflector 40 will be more effective. If more uniform signal coverage is required and the high concentration in the depth direction is not too concerned, the flat reflector 40 may be more suitable.

[0084] The ceiling antenna based on bidirectional gain in this application is generally suitable for walkways and corridors, but the ceiling antenna in the above embodiment is not suitable for corridor corners or areas where one-way (sector) signals need to pass through. Therefore, in order to expand the applicable scenarios of the ceiling antenna in this application, in some embodiments, such as Figures 1 to 6 As shown, the two reflectors 40 are defined as a first reflector 410 and a second reflector 420, respectively, and a first slide groove 112 and a second slide groove 113 are provided on the mounting surface 110 of the bottom plate 10. The ceiling antenna further includes a first sliding component 50, a second sliding component 60, and a driving mechanism 70. The first sliding component 50 is connected to the first reflector 410 and is disposed in the first slide groove 112. The second sliding component 60 is connected to the second reflector 420 and is disposed in the second slide groove 113. The driving mechanism 70 is connected to the bottom plate 10, and the driving mechanism 70 is in transmission connection with the first reflector 410 and the second reflector 420, so that the first reflector 410 and the second reflector 420 move along the track defined by the first slide slot 112 and the track defined by the second slide slot 113, respectively, and the first reflector 410 and the second reflector 420 are configured such that when the first reflector 410 and the second reflector 420 move along the track defined by the first slide slot 112 and the track defined by the second slide slot 113, respectively, a gap is left between the first reflector 410 and the second reflector 420. When the driving mechanism 70 is in working state, the first reflector 410 and the second reflector 420 move along the first slide slot 112 and the second slide slot 113, respectively, so that the positional relationship of the first reflector 410 and the second reflector 420 is switched between the states of mirror symmetry, mutual parallelism, and adjacent edge abutment.

[0085] Specifically, the first sliding assembly 50 and the second sliding assembly 60 are both guide wheels adapted with a rotating shaft, and the number of guide wheels of the first sliding assembly 50 and the second sliding assembly 60 is at least two, and both are respectively installed on the first reflector 410 and the second reflector 420 on the side facing the bottom plate 10 through the corresponding rotating shaft. An annular groove (not shown in the figure) is also provided on the circumference of each guide wheel to cooperate with the edge of the corresponding first slide groove 112 or the second slide groove 113 to limit the separation of the first sliding assembly 50 and the second sliding assembly 60 from the bottom plate 10, so that the first reflector 410 and the second reflector 420 can only move along the track defined by the first slide groove 112 and the track defined by the second slide groove 113, respectively.

[0086] The condition that "the first reflector 410 and the second reflector 420 are configured to leave a gap between the first reflector 410 and the second reflector 420 when the two move along the track defined by the first slide groove 112 and the track defined by the second slide groove 113 respectively" is set to prevent the first reflector 410 and the second reflector 420 from interfering with each other in motion when they move along the first slide groove 112 and the second slide groove 113 respectively. The matching relationship between the first reflector 410 and the moving track defined by the first slide groove 112, the matching relationship between the second reflector 420 and the moving track defined by the second slide groove 113, and the matching relationship between the first reflector 410 and the second reflector 420 during the movement process are all It needs to be set according to the actual size of the ceiling antenna. Specifically, the size of the first reflector 410 and the second reflector 420 should be set according to the size, model parameters and design purpose of the omnidirectional radiation vibrator 20. After the size of the first reflector 410 and the second reflector 420 is determined, the movement trajectory of the first reflector 410 and the second reflector 420 along the first slide groove 112 and the second slide groove 113 can be simulated, and the design of the first slide groove 112 and the second slide groove 113 can be adjusted according to the feedback of the first reflector 410 and the second reflector 420 in this process, so as to finally meet the purpose of no interference between the first reflector 410 and the second reflector 420 during the movement. In one embodiment, in order to further avoid the interference of the movement of the first reflector 410 and the second reflector 420, the first reflector 410 and the first sliding assembly 50 are connected by an extension plate to increase the minimum spacing between the first reflector 410 and the second reflector 420 when they are in a mirror-symmetrical state, as shown in FIG. Figures 2 to 4 shown.

[0087] Specifically, in order to design the first slide groove 112 and the second slide groove 113 to avoid the first reflector 410 and the second reflector 420 from interfering with each other during movement, the key is to ensure that the two reflectors 40 can maintain the predetermined movement path and avoid interference with each other when moving along their respective slide grooves through reasonable track design and size matching. The following are detailed design steps and considerations:

[0088] First, the design of the matching relationship between the reflector 40 and the slide groove:

[0089] The size of the chute matches the size of the reflector 40: When designing the size of the first reflector 410 and the second reflector 420, it is necessary to determine it according to the size, model parameters and expected working environment of the omnidirectional radiator 20. For example, if the size of the omnidirectional radiator 20 is large, the size of the reflector 40 also needs to be appropriately increased to ensure the best reflection and coverage effect of the signal. At this time, the width and depth of the chute should ensure that the guide wheel of the reflector 40 can be accommodated and sufficient space is provided to avoid friction and interference.

[0090] Slide track design: The design of the first slide 112 and the second slide 113 should take into account the track range of the reflector 40, that is, the starting position (the adjacent edges of the first reflector 410 and the second reflector 420 are in contact) and the ending position (the first reflector 410 and the second reflector 420 are parallel) of the reflector 40. The slide track design should enable the reflector 40 to slide freely in the slide and ensure that there is enough clearance between the reflectors 40 during the sliding process. At this time, the slide design should ensure that its inner surface is smooth and free of obstacles to avoid motion interference.

[0091] Secondly, the cooperation between the reflector 40 and the slide groove:

[0092] The shape of the chute and the range of motion of the reflector 40: The shape and path of each chute must ensure that the reflector 40 does not interfere when moving along the chute. During design, the curvature and direction of the chute should be accurately calculated to ensure that the reflector 40 can move smoothly along the required trajectory.

[0093] Ensure clearance and freedom of movement: During design, sufficient clearance should be left between the slide and the reflector 40. The size of this clearance should be large enough to accommodate the free movement of the reflector 40 to avoid jamming or friction during movement. Usually, this clearance should be set to a few millimeters to more than ten millimeters during design, depending on the weight of the reflector 40 and the design of the sliding assembly.

[0094] Matching of sliding components with the slide groove: Each sliding component should be able to slide smoothly along the slide groove track. The matching method of the sliding component and the slide groove usually uses a guide wheel or a guide rail. The number and installation position of these guide wheels should be reasonably designed according to the weight and movement trajectory of the reflector 40. The matching form of the guide wheel and the slide groove should ensure that the guide wheel can be closely in contact with the inner wall of the slide groove to prevent the reflector 40 from deflecting or moving irregularly.

[0095] Next, the key design points to avoid interference include the application of extension plates and the adjustment and optimization of the slide slots. Among them, the application of the extension plates is to ensure that the reflective plates 40 maintain sufficient clearance during movement, and the design of the extension plates is key. The extension plates connect the first reflective plates 410 and the first sliding assembly 50, so that when the reflective plates 40 enter the mirror-symmetrical state, the minimum distance between the reflective plates 40 is increased, thereby effectively preventing interference between the reflective plates 40. The extension plates can be optimized according to the size of the reflective plates 40 and the width of the slide slot design to ensure that the two reflective plates 40 do not contact each other in the symmetrical state.

[0096] Furthermore, during the design, the shape and structure of the slide groove 9 (the first slide groove 112 and the second slide groove 113) should be simulated and adjusted according to actual needs to ensure that a certain gap is always maintained between the slide groove and the reflector 40 during the entire movement process. If a problem is found in the slide groove design, such as too small a gap or too large a deviation of the trajectory of the reflector 40, the shape of the slide groove should be fine-tuned to ensure that the reflector 40 can remain stable during the sliding process.

[0097] Then, the slide is further adjusted based on the motion simulation results. The motion simulation is to ensure the accuracy of the design. It can be simulated by computer-aided design tools (SW or PR) to simulate the feedback of the reflector 40 when it moves along the slide. The simulation process can observe the changes in the trajectory of the reflector 40 during movement, the size of the gap, whether the sliding is smooth, and other details through physical simulation, so as to find potential interference problems. Then, based on the simulation results, the designer can adjust the track shape and size of the slide and the matching relationship between the reflector 40 and the slide according to the feedback until the ideal state of no interference between the reflector 40 and the slide is achieved.

[0098] Finally, during the design process, it is also necessary to consider the adaptability of the slideway at different angles and in different motion states of the reflector 40. When designing, it should be foreseen that when the reflector 40 is in different positions, the slideway may be subjected to different degrees of stress or deformation, so the design of the slideway should have a certain degree of elasticity or flexibility to ensure that the cooperation between the reflector 40 and the slideway can remain stable even under changes in the external environment or long-term use.

[0099] In summary, in order to avoid interference between the first reflector 410 and the second reflector 420 during movement, reasonable slide groove design, matching between the reflector 40 and the slide groove, application of extension plates, simulation and feedback, etc. are required during design to ensure that the two reflectors 40 can slide smoothly and maintain sufficient clearance during movement. These designs not only ensure the normal operation of the ceiling antenna, but also improve its applicability and stability in different use environments.

[0100] The content “When the driving mechanism 70 is in the working state, the first reflector 410 and the second reflector 420 move along the first slide groove 112 and the second slide groove 113 respectively, so that the positional relationship of the first reflector 410 and the second reflector 420 switches between the states of mirror symmetry, mutual parallelism and adjacent edge abutment” mainly indicates the three special relative positions of the first reflector 410 and the second reflector 420 during the movement process along the trajectory defined by the first slide groove 112 and the trajectory defined by the second slide groove 113 respectively. Specifically:

[0101] When the first reflector 410 and the second reflector 420 are in a mirror-symmetrical state, the first reflector 410 and the second reflector 420 should be located in the middle of the first slide groove 112 and the second slide groove 113, respectively. Figure 2 Specifically, in this state, the symmetrical position of the two reflectors 40 is conducive to the bidirectional reflection of the signal, which is emitted from the two exits 1010 of the reflection area 100. In addition, the mirror-symmetrical position design ensures the balance and stability of the reflector 40, which helps to improve the consistency of signal transmission.

[0102] When the first reflector 410 and the second reflector 420 are in a parallel state, the first sliding component 50 abuts against the inner wall of one end of the first slide groove 112 in the extending direction, and the second sliding component 60 abuts against the inner wall of one end of the second slide groove 113 in the extending direction, and the abutting end of the first slide groove 112 and the first sliding component 50 and the abutting end of the second slide groove 113 and the second sliding component 60 are both located on the same side of the omnidirectional radiation vibrator 20, such as Figure 3 Specifically, in this state, the first reflector 410 and the second reflector 420 are arranged in parallel, which helps to limit the signal from the omnidirectional radiator 20 to propagate within a large-angle fan-shaped range, so as to be suitable for situations where directional signal coverage is required. At this time, the signal gain range is between 180° and 120° when viewed from above.

[0103] When the first reflector 410 and the second reflector 420 are in an adjacent edge abutment state, the first sliding component 50 abuts against the inner wall of the other end of the first slide groove 112 in the extending direction, and the second sliding component 60 abuts against the inner wall of the other end of the second slide groove 113 in the extending direction, and the abutting end of the first slide groove 112 and the first sliding component 50 and the abutting end of the second slide groove 113 and the second sliding component 60 are both located on the other side of the omnidirectional radiation vibrator 20. Figure 3 Specifically, in this state, the edges of the reflector 40 are in contact, so that the signal can be transmitted in a smaller direction or the signal propagation in a certain fan-shaped direction can be strengthened. In this state, the angle and directivity of signal propagation change, which is suitable for special areas or different signal transmission requirements, such as signal transmission in the corner area of ​​the corridor.

[0104] Furthermore, in a more specific embodiment, in order to achieve the above-mentioned effect of avoiding the motion interference between the first reflector 410 and the second reflector 420, as shown in FIG. Figures 2 to 4 As shown, the first slide groove 112 and the second slide groove 113 are both arc-shaped grooves, the diameter of the first slide groove 112 is larger than the diameter of the second slide groove 113, the second slide groove 113 is located on the inner side of the first slide groove 112, and the midpoint of the first slide groove 112, the center of the circle corresponding to the first slide groove 112, the midpoint of the second slide groove 113 and the center of the circle corresponding to the second slide groove 113 are collinear, and the center of the circle corresponding to the first slide groove 112 is eccentrically arranged toward the inner side of the second slide groove 113, and the arc corresponding to the first slide groove 112 is larger than the arc corresponding to the second slide groove 113.

[0105] Specific:

[0106] The key to the design is that both the first slide groove 112 and the second slide groove 113 are arc-shaped grooves. The arc-shaped slide grooves allow the sliding assembly to move along a curved track rather than a simple straight track. The arc-shaped track design helps the reflector 40 maintain a certain curvature during movement, reducing the risk of irregular movement.

[0107] The design of "the diameter of the first slide groove 112 is larger than the diameter of the second slide groove 113" allows the second slide groove 113 to be located inside the first slide groove 112, that is, the range of the second slide groove 113 is surrounded by the first slide groove 112. This relative position setting makes the two slide grooves not interfere with each other, and at the same time provides sufficient space for the movement of the reflector 40.

[0108] The collinearity of the first slide groove 112 and the second slide groove 113, that is, "the midpoint of the first slide groove 112, the center of the first slide groove 112, the midpoint of the second slide groove 113 and the center of the second slide groove 113 are on the same straight line". This design ensures that the movement trajectories of the two slide grooves remain coordinated within a certain space, avoiding cross interference between the two reflective plates 40 when moving.

[0109] The eccentric design of "the center of the first slide groove 112 is eccentrically arranged toward the inner side of the second slide groove 113" is very critical, which makes the movement of the two reflective plates 40 produce a relative offset in the depth direction, thereby avoiding the collision between the two during the sliding process. The setting of the eccentric position effectively reduces the probability of physical interference between the two reflective plates 40, ensuring that their movements do not overlap.

[0110] The design that “the curvature corresponding to the first slide groove 112 is greater than the curvature corresponding to the second slide groove 113” ensures that the movement paths of the first reflector 410 and the second reflector 420 have different curvatures. Specifically:

[0111] The first slide groove 112 has a larger curvature. When the first reflector 410 moves along the first slide groove 112, it moves along a wider arc track. The larger curvature enables the first reflector 410 to slide in a larger range, providing more degrees of freedom.

[0112] The second slide groove 113 has a smaller curvature. The second reflector 420 slides at a relatively small curvature, which makes its range of motion more limited, and is surrounded by the first slide groove 112, thereby preventing cross interference during the motion process.

[0113] Therefore, since the two reflective plates 40 slide along tracks of different curvatures and there is a certain offset between the two, the reflective plates 40 will not overlap when moving. In this way, the first reflective plate 410 and the second reflective plate 420 avoid the risk of mutual interference. In addition, the larger diameter and larger curvature of the first slide groove 112 provide more free movement space for the reflective plates 40, avoiding friction or collision caused by the two reflective plates 40 being too close.

[0114] The above-mentioned comprehensive design precisely sets the size, curvature and eccentric position of the first slide groove 112 and the second slide groove 113, so that the reflector 40 can maintain an appropriate gap during the movement, thereby avoiding collision or interference between the two reflector plates 40. Furthermore, through different curvature designs, the first reflector plate 410 and the second reflector plate 420 move smoothly along their respective trajectories, each maintaining an independent movement space, thereby avoiding overlap on the trajectory. Furthermore, the colinear design ensures that the movement paths of the two slide grooves always maintain the same direction, further reducing the interference between the reflector plates 40.

[0115] In summary, the above design makes the movement paths of the two reflective plates 40 independent of each other through the eccentric setting, avoiding the overlapping of the paths. Specifically, the arc-shaped slide groove provides a smooth sliding trajectory, reducing unnecessary interference, and the difference in the curvature of the first slide groove 112 and the second slide groove 113 makes the two reflective plates 40 move along different curvatures, further preventing the occurrence of interference. Secondly, the colinear design ensures that the paths of the two slide grooves are coordinated, but the tracks of the two reflective plates 40 are avoided from interlacing. Therefore, the design of this structure not only ensures the free movement of the reflective plate 40, but also avoids the interference problem caused by improper tracks, spatial overlap and other factors to the greatest extent.

[0116] In one embodiment, Figures 5 and 6As shown, the driving mechanism 70 also includes a driver (not shown in the figure), a transmission assembly 720, a first transmission member 730 and a second transmission member 740. The driver is arranged on the bottom plate 10, and the driver includes an output shaft 710 that is controlled to rotate. The transmission assembly 720 is connected to the output shaft 710 to move synchronously with the driver. The first transmission member 730 and the second transmission member 740 are both controlled to move, the first transmission member 730 is in transmission connection with the first reflective plate 410, the second transmission member 740 is in rotation connection with the second reflective plate 420, and the first transmission member 730 and the second transmission member 740 are both connected to the transmission assembly 720.

[0117] Furthermore, the first transmission member 730 and the second transmission member 740 are both arc-shaped toothed plates, and the base plate 10 is configured with a first arc-shaped guide groove 114 for limiting the motion trajectory of the first transmission member 730 and a second arc-shaped guide groove 115 for limiting the motion trajectory of the second transmission member 740. The first transmission member 730 and the second transmission member 740 are respectively arranged in the first arc-shaped guide groove 114 and the second arc-shaped guide groove 115, so that the first transmission member 730 and the second transmission member 740 are respectively moved along the trajectory defined by the first arc-shaped guide groove 114 and the second arc-shaped guide groove 115. The first transmission member 730 moves along the trajectory defined by the arc guide groove 115, and the motion trajectory of the first transmission member 730 is concentric with the motion trajectory of the second transmission member 740. The diameter of the first transmission member 730 is greater than the diameter of the second transmission member 740, and the arc corresponding to the first transmission member 730 is greater than the arc corresponding to the second transmission member 740. In addition, the tooth grooves of the first transmission member 730 are arranged on the inner peripheral side, and the tooth grooves of the second transmission member 740 are arranged on the outer peripheral side, so that the tooth grooves of the first transmission member 730 and the tooth grooves of the second transmission member 740 are arranged in a relative direction. The transmission assembly 720 includes a first gear 721 and a second gear 722, both of which are arranged on the output shaft 710, and the first gear 721 is fixedly sleeved on the outside of the output shaft 710, the first gear 721 is meshed with the tooth grooves of the first transmission member 730, and the second gear 722 is meshed with the second transmission member 740. The second gear 722 is configured to rotate around the output shaft 710 after the second sliding assembly 60 abuts against the inner wall of the second sliding groove 113 .

[0118] Specifically, the driver can be embodied as a servo motor or a manually adjusted mechanical structure, etc., which is fixedly installed at the bottom of the base plate 10, and the output shaft 710 of the driver is controlled to rotate and is connected to the first gear 721 and the second gear 722 at the same time, wherein the first gear 721 is fixedly connected to the output shaft 710, so that the first gear 721 can rotate synchronously with the output shaft 710, and the second gear 722 is configured to rotate around the output shaft 710 after the second sliding assembly 60 abuts against the inner wall of the second slide groove 113, because the first transmission member 730 and the second transmission member 740 In the case of concentric arrangement, the arcs of the two are different. When the second transmission member 740 makes the second sliding assembly 60 abut against one end of the second slide slot 113, in order not to interfere with the continued rotation of the first gear 721, the second gear 722 needs to rotate relative to the output shaft 710. In a specific manner, the output shaft 710 can be connected to the second gear 722 through a torque limiter. When the torque applied to the second gear 722 does not exceed the preset value, it can rotate synchronously with the output shaft 710. When the torque applied to the second gear 722 exceeds the preset value, the second gear 722 will rotate relative to the output shaft 710. The preset value needs to be determined based on the actual force when the second gear 722 is meshed with the tooth groove of the outer side surface of the second transmission member 740 and the actual torque of the driver. It only needs to be determined that when it is less than the preset value, it will not affect the second gear 722, the tooth groove of the second transmission member 740 and the driver.

[0119] In the process that the first reflector 410 and the second reflector 420 move along the first slide groove 112 and the second slide groove 113 respectively, so that the positional relationship of the first reflector 410 and the second reflector 420 switches between the states of mirror symmetry, mutual parallelism and adjacent edge abutment, the matching changes of the first gear 721, the second gear 722, the first transmission member 730, the second transmission member 740, the first sliding assembly 50 and the second sliding assembly 60 are relatively complex, and therefore, detailed description is required, as follows:

[0120] In the present embodiment, the initial position of the ceiling antenna is that the first reflector 410 and the second reflector 420 are in a mirror-symmetrical state. To adjust the first reflector 410 and the second reflector 420 to a state where the adjacent edges are in contact, during this process, the output shaft 710 of the driver rotates to make the first gear 721 and the second gear 722 rotate synchronously, so as to synchronously make the first transmission member 730 and the second transmission member 740 move in the corresponding first arc-shaped guide groove 114 and the second arc-shaped guide groove 115, thereby driving the first reflector 410 and the second reflector 420 to move. 13 is smaller than the diameter of the first slide slot 112, therefore, the second sliding member 922 will first abut against the inner wall of one end of the second slide slot 113 in the extending direction, but at this time, the first sliding member 912 corresponding to the first reflector 410 has not yet moved to the abutting position, at this time, with the assistance of the torque limiter, the second gear 722 and the output shaft 710 are separated from the relatively fixed state, and then, the second reflector 420 drives the second reflector 420 to move under the action of the driver until the second sliding assembly 60 abuts against the end of the inner wall of the second slide slot 113 located at the same end of the first sliding assembly 50. In the above process, the moving direction of the first transmission member 730 is exactly opposite to the moving direction of the second transmission member 740.

[0121] If the first reflector 410 and the second reflector 420 are to be adjusted from a mirror-symmetrical state to a parallel state, similarly, the second sliding assembly 60 first abuts against the inner wall at the other end of the second slide groove 113 in the extension direction, and then the second gear 722 contacts the output shaft 710 in a relatively fixed state, and then the second sliding assembly 60 abuts against the inner wall at the other end of the second slide groove 113 under the action of the second transmission member 740. At this time, the first reflector 410 and the second reflector 420 are exactly in a parallel state.

[0122] The above-mentioned curvature corresponding to the first slide groove 112 is larger than the curvature corresponding to the second slide groove 113, which corresponds to the condition that the curvature corresponding to the first transmission member 730 is larger than the curvature corresponding to the second transmission member 740. In addition, because the first slide groove 112 and the second slide groove 113 are eccentrically arranged, and the motion trajectory of the first transmission member 730 is concentric with the motion trajectory of the second transmission member 740, when the first sliding assembly 50 corresponding to the first reflective plate 410 moves in the first slide groove 112 during the position switching process, the first transmission member 730 may interfere with the first reflective plate 410 in motion. In order to solve this problem, the first transmission member 730 and the first reflective plate 410, and the second transmission member 740 and the second reflective plate 420 can be connected by an adaptive mechanism 80, such as Figures 6 to 8As shown, the adaptive mechanism 80 includes an adjustment plate 810, a guide member 820 and an elastic member 830. The adjustment plate 810 is rotatably connected to the first reflective plate 410 and / or the second reflective plate 420. A movable groove 811 is provided on the adjustment plate 810. The guide member 820 is installed on the first transmission member 730 and / or the second transmission member 740. The guide member 820 is cooperatively connected with the movable groove 811, and the guide member 820 is restricted to move along the limited trajectory of the movable groove 811. The elastic member 830 is arranged in the movable groove 811, and its two ends are respectively abutted against the guide member 820 and the inner wall of the movable groove 811, so that the guide member 820 is more stable when sliding in the movable groove 811.

[0123] Specifically, the moving groove 811 is embodied as a strip groove, the guide member 820 is specifically a guide short rod, one end of the guide short rod is fixedly connected to the first transmission member 730 and / or the second transmission member 740, and the other end of the guide short rod is inserted into the moving groove 811 to achieve sliding connection with the adjustment plate 810, and the periphery of the guide short rod fits with the inner wall of the moving groove 811 to achieve full contact, so as to prevent the guide short rod from separating from the inner wall of the moving groove 811 when moving in the moving groove 811. The elastic member 830 is embodied as a columnar spring, which mainly provides rebound force for the guide short rod to make the guide short rod more stable in the moving groove 811.

[0124] It should be noted that after selecting the installation area, the ceiling antenna in this embodiment only needs to adjust the first reflector 410 and the second reflector 420 to a specific state, without repeated adjustment. The ceiling antenna in this application also includes a dust cover, which is detachably connected to the bottom plate 10, and the cover is arranged on the side of the installation surface 110, and each structure can be enclosed in the dust cover. When adjusting the movement of the first reflector 410 and the second reflector 420, it is only necessary to remove the dust cover to intuitively reflect the position of the first reflector 410 and the position of the second reflector 420. Further, when the first reflector 410 and the second reflector 420 are switched from the adjacent edge abutment state or from the parallel state to the mirror symmetric state, because in the process of adjusting the first reflector 410 and the second reflector 420 from the mirror symmetric state to the adjacent edge abutment state or the parallel state in the aforementioned step, the second gear 722 will rotate relative to the output shaft 710, which will cause the matching stroke of the second transmission member 740 and the second gear 722 to be different from the initial matching, but because the second gear 722 is connected to the output shaft 710 through the torque limiter, the second gear 722 can still rotate relative to the output shaft 710 after the torque exceeds the target value during the secondary adjustment process. Therefore, as long as the operator can intuitively (remove the dust cover) see the relative movement of the first reflector 410 and the second reflector 420, the first reflector 410 and the second reflector 420 can be switched from the adjacent edge abutment state or the parallel state to the mirror symmetric state.

[0125] In a relatively independent embodiment, this embodiment is designed based on the first embodiment and the opposite sides of the two reflective plates 40 are convex and reversely curved surfaces, in order to be suitable for narrow and long areas with a large width (such as the width direction of the corridor), such as Figures 9 to 11 As shown, the two reflectors 40 in the ceiling antenna are defined as a first reflector 410 and a second reflector 420, respectively. The first reflector 410 and the second reflector 420 are provided with an embedded block 430 in the middle of the side facing the bottom plate 10. The bottom plate 10 and the two embedded blocks 430 are provided with embedded grooves 116 at the corresponding positions, and the two embedded blocks 430 are inserted into the two embedded grooves 116 in a one-to-one correspondence. The ceiling antenna also includes an adjustment mechanism 90, which includes a first adjustment unit 910 and a second adjustment unit 920. The first adjustment unit 910 is connected to the first reflector 410 so that the two ends of the first reflector 410 are moved closer or farther away when the adjustment mechanism 90 is in operation, so that the reverse bow angle of the first reflector 410 changes. The second adjustment unit 920 is connected to the second reflector 420 so that the two ends of the second reflector 420 are moved closer or farther away when the adjustment mechanism 90 is in operation, so that the reverse bow angle of the second reflector 420 changes.

[0126] Specifically, the substrate of the reflector 40 is made of an elastic material and has good resilience. When the reverse bow angles of the two reflectors 40 increase at the same time, that is, the curvature of the two reflectors 40 increases, the curvature of the reflecting surface becomes stronger, which means that the central part of the reflector 40 is closer to other areas of the antenna, and the curvature of the reflector 40 increases. This allows the reflector 40 to concentrate more signal energy toward a specific direction, especially when the two reverse bow surfaces face each other, the signal will be more focused on the area between the reflectors 40. For antennas installed in narrow corridors, this may help to enhance the signal strength in the center of the corridor, because the reflector 40 will form a strong signal reflection area 100 on the ceiling, propagating the signal toward the center or far end of the corridor.

[0127] When the inverse bow angles of the two reflectors 40 decrease at the same time, that is, the curvature of the reflectors 40 decreases, the middle parts of the reflectors 40 gradually move away from each other, so that the reflecting surface becomes flatter. This angle change will cause the signal to spread more evenly, rather than focusing on the center of the aisle. As the curvature of the reflectors 40 decreases, the reflected signal will be more widely distributed, covering the areas on both sides of the aisle, which may provide more enhancement to the signal coverage on both sides.

[0128] Therefore, when the ceiling antenna in this embodiment is installed in a narrow corridor, the width of the corridor and the angle of the antenna reflector 40 will jointly determine the propagation direction and strength of the signal. The following is the specific impact of the change in the reverse bow angle on the corridor signal coverage:

[0129] When the reverse bow angle increases, the signal is concentrated in the central area of ​​the aisle. Since the curvature of the reflector 40 increases, the reflector 40 is more like a signal focuser, which concentrates the signal energy in the center of the aisle or slightly toward the central area of ​​the reflector 40. This will result in a stronger signal at the center, while the signals on both sides may be weaker. In this case, the signal coverage range is narrower, which is suitable for smaller narrow aisles or when the width of the aisle is small, the quality of the center signal can be ensured.

[0130] When the bow angle decreases, the signal is more widely spread to both sides of the aisle, making the reflector 40 flatter and the reflection surface almost straight, which means that the signal is spread to both sides of the aisle in a more dispersed manner. This situation is suitable for narrow aisles with a large width, because the reflection area can be increased to cover both sides of the aisle, ensuring more uniform signal coverage.

[0131] Furthermore, when the inverse bow angles of the two reflectors 40 change at the same time, if their angle changes are equal, the changes in signal coverage of the reflection area 100 will remain symmetrical. That is, the increase or decrease in the angles of the two reflectors 40 will cause the concentration or diffusion of the signal to increase or decrease, but because the adjustment is performed synchronously, the signal changes on both sides are relatively uniform, and the reflectors 40 will not cause the signal to be too concentrated or too sparse in one direction. This synchronous adjustment helps to perform precise signal coverage control in narrow and long aisles, especially when the aisle width is large, and can ensure that the reflectors 40 provide uniform signal strength coverage after adjustment.

[0132] In summary, when the reverse bow angles of the first reflector 410 and the second reflector 420, which are arranged in a mirror-symmetrical manner, are increased, the signal will be more concentrated in the center of the aisle, which is suitable for narrow aisles. On the other hand, when the reverse bow angles of both are reduced, the signal will spread to both sides of the aisle, which is suitable for aisles with a wider width. The change in the reverse bow angle directly affects the propagation mode of the signal. When the angle is increased, the signal will be concentrated, and when it is reduced, the signal will spread. Therefore, the adjustment of the reverse bow angle enables the antenna to flexibly adjust the focusing range of the signal according to the different requirements of the aisle width to provide the best wireless signal coverage.

[0133] The detailed design in this embodiment is as follows:

[0134] like Figures 9 and 10As shown, two mirror-symmetrical first adjustment slots 117 are provided at positions corresponding to the two ends of the first reflector 410 on the bottom plate 10, and two mirror-symmetrical second adjustment slots 118 are provided at positions corresponding to the two ends of the second reflector 40 on the bottom plate 10, and the two first adjustment slots 117 and the two second adjustment slots 118 are respectively distributed on both sides of the two embedded slots 116. The first adjustment unit 910 includes two first adjustment components 911 and two first sliding members 912, the two first adjustment components 911 are symmetrically arranged at the two ends of the first reflector 410 along the length direction, the two first sliding members 912 are connected to the two first adjustment components 911 in a one-to-one correspondence, and the two first sliding members 912 are also slidably matched with the two first adjustment slots 117 in a one-to-one correspondence. The second adjustment unit 920 includes two second adjustment components 921 and two second sliding members 922. The two second adjustment components 921 are symmetrically arranged at both ends of the second reflective plate 420 along the length direction. The two second sliding members 922 are connected to the two second adjustment components 921 in a one-to-one manner, and the two second sliding members 922 are also slidably connected to the two second adjustment grooves 118 in a one-to-one manner.

[0135] In this embodiment, the ceiling antenna further includes a first telescopic member 930 and a second telescopic member 940, wherein the first telescopic member 930 includes two controlled telescopic first telescopic ends 931, the two first telescopic ends 931 move in opposite directions, and the two first telescopic ends 931 are respectively connected to a first adjustment component 911 and a second adjustment component 921 located at the same end, so that when the two first telescopic ends 931 are telescoped, the first sliding member 912 and the second sliding member 922 at the same end are moved, thereby adjusting the size of the outlet 1010 at one end of the reflection area 100. The second telescopic member 940 includes two controlled telescopic second telescopic ends 941, the two second telescopic ends 941 move in opposite directions, and the two second telescopic ends 941 are respectively connected to another first adjustment component 911 and another second adjustment component 921, and when the two second telescopic ends 941 are telescoped, the first sliding member 912 and the second sliding member 922 at the other end can be moved, thereby adjusting the size of the outlet 1010 at the other end of the reflection area 100. Among them, when the ceiling antenna is in an adjustment state, the two first telescopic ends 931 and the two second telescopic ends 941 are telescoped at the same time, thereby changing the reverse bow angle of the first reflector 410 and the reverse bow angle of the second reflector 420, so as to achieve the effect of adjusting the antenna coverage range in this embodiment.

[0136] Specifically, the first telescopic member 930 and the second telescopic member 940 are double piston electric cylinders, etc., which are fixedly mounted on the side of the bottom plate 10 away from the mounting surface 110. The first adjustment assembly 911 and the second adjustment assembly 921 are both composed of an adjustment plate 810 and a connecting rod. The adjustment plate 810 is a long strip plate. Both ends of the adjustment plate 810 in the length direction are constructed with barbs. The cross section of the barbs is rectangular, and the two barbs on the adjustment plate 810 are located on the same side. The inner walls of the two barbs and the side of the adjustment plate 810 are surrounded to form an adjustment groove. The size and shape of the adjustment groove are adapted to the reflector 40. The adjustment plate 810 is sleeved on the reflector 40 through the adjustment groove. At this time, the width direction, length direction and thickness direction of the adjustment groove are consistent with the corresponding directions of the reflector 40, and the adjustment plate 810 can move relative to the reflector 40 along the length direction of the reflector 40. After the reflector 40 is fixed on the bottom plate 10 by the cooperation of the embedding block 430 and the embedding groove 116, when the adjustment plate 810 moves along the first adjustment groove 117 or the second adjustment groove 118, both ends of the reflector 40 in the length direction will be elastically deformed, thereby changing the anti-bow angle of the reflector 40. The first sliding member 912 and the second sliding member 922 are respectively fixedly installed on the side of the first reflector 410 facing the bottom plate 10 and the side of the second reflector 420 facing the bottom plate 10. The first sliding member 912 and the second sliding member 922 are embodied as pulleys or sliders. The peripheral sides of the pulleys and the peripheral sides of the sliders are provided with slots, which are matched and connected with the first adjustment groove 117 or the second adjustment groove 118, so that the first sliding member 912 and the second sliding member 922 can only move along the extension direction of the first adjustment groove 117 and the extension direction of the second adjustment groove 118 respectively. The two ends of the connecting rod are respectively hinged to one end of the sliding member 912 and the telescopic member, that is, the two ends of the connecting rod in the first adjustment component 911 are respectively hinged to the first telescopic end 931 of the first telescopic member 930 and the first sliding member 912, and the two ends of the connecting rod in the second adjustment component 921 are respectively hinged to the second telescopic end 941 of the second telescopic member 940 and the second sliding member 922, thereby avoiding motion interference between the first telescopic end 931 of the first telescopic member 930 and the second telescopic end 941 of the second telescopic member 940 during telescoping.

[0137] Furthermore, in order to prevent the adjustment plate 810 from scratching the surface of the reflective plate 40 during movement, a sliding member, such as a roller, a ball (not shown in the figure), etc., can be installed on the inner wall of one side of the adjustment groove. The sliding member is located between the adjustment groove and the reflective plate 40 to reduce the friction resistance of the adjustment plate 810 when it moves relative to the reflective plate 40.

[0138] The above contents described in this specification are merely examples of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, as long as they do not deviate from the contents of the present specification or exceed the scope defined by the claims, they shall all fall within the protection scope of the present invention.

Claims

1. A ceiling antenna based on bidirectional gain, characterized in that: include: The bottom plate comprises a mounting surface, and a through hole is formed on the mounting surface side of the bottom plate; An omnidirectional radiating vibrator is arranged on the side of the mounting surface, and the bottom of the omnidirectional radiating vibrator passes through a through hole and is connected to the core wire; A short-circuit connector, arranged on the mounting surface side and connected to the omnidirectional radiating element; Two reflective plates are both arranged on the side of the mounting surface, and the opposite sides of the two reflective plates and the side of the mounting surface together form a reflection area, and the omnidirectional radiation vibrator is arranged in the reflection area; Wherein, when the two reflectors are in a mirror-symmetrical state, the center point of the omnidirectional radiator is coplanar with the symmetry planes of the two reflectors, and the center of the omnidirectional radiator is also coplanar with a first plane formed by a line connecting the minimum spacing between the opposite sides of the two reflectors, the first plane is equidistant from the edge of the reflective area in two directions perpendicular to and facing away from the first plane, and the spacing between the opposite sides of the two reflectors is configured to increase linearly with the distance from the first plane in a direction perpendicular to the first plane; The opposite sides of the two reflecting plates are both convex surfaces, and the convex surfaces are inversely curved arc surfaces.

2. A ceiling antenna based on bidirectional gain according to claim 1, characterized in that: The two reflective plates are respectively defined as a first reflective plate and a second reflective plate; The mounting surface side of the bottom plate is provided with a first slide groove and a second slide groove; The ceiling antenna also includes: A first sliding assembly and a second sliding assembly, wherein the first sliding assembly is connected to the first reflecting plate and is disposed in the first sliding groove, and the second sliding assembly is connected to the second reflecting plate and is disposed in the second sliding groove; a driving mechanism connected to the bottom plate, the driving mechanism being transmission-connected to the first reflector and the second reflector so that the first reflector and the second reflector move along a track defined by the first slide slot and a track defined by the second slide slot, respectively, and the first reflector and the second reflector are configured such that a gap is left between the first reflector and the second reflector when the first reflector and the second reflector move along a track defined by the first slide slot and a track defined by the second slide slot, respectively; Wherein, when the driving mechanism is in a working state, the first reflective plate and the second reflective plate move along a trajectory defined by the first slide groove and a trajectory defined by the second slide groove respectively, so that the positional relationship between the first reflective plate and the second reflective plate switches between mirror-symmetrical, mutually parallel and adjacent edge abutment states.

3. A ceiling antenna based on bidirectional gain according to claim 2, characterized in that: The first slide groove and the second slide groove are both arc-shaped grooves, the diameter of the first slide groove is larger than the diameter of the second slide groove, the second slide groove is located on the inner side of the first slide groove, and the midpoint of the first slide groove, the center of the circle corresponding to the first slide groove, the midpoint of the second slide groove and the center of the circle corresponding to the second slide groove are collinear, and the center of the circle corresponding to the first slide groove is eccentrically arranged toward the inner side of the second slide groove, and the curvature corresponding to the first slide groove is larger than the curvature corresponding to the second slide groove.

4. A ceiling antenna based on bidirectional gain according to claim 3, characterized in that: The driving mechanism comprises: A driver, disposed on the bottom plate, the driver comprising an output shaft for controlled rotation; a transmission assembly connected to the output shaft to move synchronously with the driver; The first transmission member and the second transmission member both move in a controlled manner, the first transmission member is transmission-connected to the first reflector plate, the second transmission member is transmission-connected to the second reflector plate, and the first transmission member and the second transmission member are both connected to the transmission assembly.

5. The ceiling antenna based on bidirectional gain according to claim 4, characterized in that: The first transmission member and the second transmission member are both arc-shaped toothed plates, and the bottom plate is constructed with a first arc-shaped guide groove for limiting the movement trajectory of the first transmission member and a second arc-shaped guide groove for limiting the movement trajectory of the second transmission member, the first transmission member and the second transmission member are respectively arranged in the first arc-shaped guide groove and the second arc-shaped guide groove, so that the first transmission member and the second transmission member move along the trajectory defined by the first arc-shaped guide groove and the trajectory defined by the second arc-shaped guide groove, respectively, the movement trajectory of the first transmission member is concentrically arranged with the movement trajectory of the second transmission member, the diameter of the first transmission member is larger than the diameter of the second transmission member, and the arc corresponding to the first transmission member is larger than the arc corresponding to the second transmission member, and the tooth grooves of the first transmission member are arranged on the inner peripheral side, and the tooth grooves of the second transmission member are arranged on the outer peripheral side, so that the tooth grooves of the first transmission member and the tooth grooves of the second transmission member are arranged opposite to each other; The transmission assembly includes a first gear and a second gear, both of which are arranged on the output shaft, and the first gear is fixedly sleeved on the outside of the output shaft, the first gear is meshed with the tooth groove of the first transmission member, and the second gear is meshed with the second transmission member, wherein the second gear is configured to rotate around the axis of the output shaft after the second sliding assembly abuts against the inner wall of the second sliding groove.

6. A ceiling antenna based on bidirectional gain according to claim 5, characterized in that: It also includes a torque limiter, which is arranged between the second gear and the output shaft so as to cause relative rotation between the second gear and the output shaft after the torque applied to the second gear exceeds a preset value.

7. The ceiling antenna based on bidirectional gain according to claim 1, characterized in that: The two reflective plates are respectively defined as a first reflective plate and a second reflective plate, and an embedded block is provided in the middle of the first reflective plate and the second reflective plate on the side facing the installation surface; The mounting surface of the bottom plate is provided with embedding grooves at positions corresponding to the two embedding blocks, and the two embedding blocks are inserted into the two embedding grooves in a one-to-one correspondence manner; The ceiling antenna also includes: The adjustment mechanism includes a first adjustment unit and a second adjustment unit, wherein the first adjustment unit is connected to the first reflector to make the two ends of the first reflector approach or move away from each other when the adjustment mechanism is in operation, so that the reverse bow angle of the first reflector changes; and the second adjustment unit is connected to the second reflector to make the two ends of the second reflector approach or move away from each other when the adjustment mechanism is in operation, so that the reverse bow angle of the second reflector changes; Wherein, the first reflecting plate and the second reflecting plate are configured so that when the adjusting mechanism is in operation, the opposite sides of the first reflecting plate and the second reflecting plate are both the convex surfaces.

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