Meter-level wireless optical communication contactless operation magnetic locking alignment device and method

Abstract

The device and method for non-contact operation of meter-level wireless optical communication magnetic locking alignment belong to the field of wireless optical communication technology. In the prior art, when the distance between the two parties of wireless optical communication reaches the meter level, the alignment device cannot achieve dynamic line of sight. The present invention fixes the coaxial transceiver wireless optical communication module on the non-contact alignment starting mechanism. After the non-contact alignment starting mechanism is powered on, the operator only needs to sweep the hand to make the internal alignment main control module send instructions to the driving power supply to drive the laser diode to emit alignment indicator light; manually fine-tune the posture of the non-contact alignment starting mechanism, and the coaxial transceiver wireless optical communication module will change its posture accordingly. If the alignment auxiliary target lights up, it means that the alignment auxiliary target is accurately illuminated by the other party's alignment indicator light, which means that the coaxial transceiver wireless optical communication modules of the communicating parties are aligned; finally, rotate the magnetic adjustment knob until the magnetic force generated by the electromagnet locks the ferromagnetic spherical shaft on the ball bearing.

Description

Technical Field

[0001] The present invention discloses a meter-level wireless optical communication contactless operation magnetic locking alignment device and method, which belong to the technical field of wireless optical communication. Background Art

[0002] The information age has brought tremendous convenience and significantly shortened the distance between people. Demands for shorter transmission times and greater information throughput place extremely high demands on communication equipment. For example, VR technology, which enhances the visual experience of watching movies and playing games, requires download bandwidth measured in gigabits. To ensure a truly immersive experience, communication systems must minimize transmission latency. Clearer images and higher video frame rates require data transmission systems that are fast enough, yet imperceptible to users. One of the most promising technologies for meeting these demands is wireless optical communication.

[0003] In indoor, meter-level wireless communication environments, such as homes and offices, radio communication exhibits significant shortcomings compared to optical wireless communication technology in certain application scenarios. For example, online gaming applications place very high demands on transmission latency. Even under ideal conditions, the maximum transmission latency in the most commonly used Wi-Fi network environment can reach tens to hundreds of milliseconds. The limited number of available wireless frequency bands means that different wireless devices are crowded within a few bands, causing significant interference. In environments with a large number of users or wireless communication devices within a frequency band, transmission latency can be even longer. For gaming applications, latency exceeding 50 milliseconds can cause noticeable lag, significantly degrading the gaming experience. Furthermore, home network storage servers primarily store images and videos. With the prevalence of high-resolution images, 4K, and even 8K video, achieving fast data access and a local storage-like experience requires a high-speed, stable connection. Currently, Wi-Fi technology, with its highest maturity and transmission speed, boasts theoretical transmission rates in the gigabit range. While Wi-Fi technology can partially meet the communication speed requirements of this application, its communication speed is significantly affected by communication distance and channel environment. When the communication distance is greater than 5-10 meters, combined with a poor channel environment (e.g., multiple wireless communication devices operating simultaneously in the same communication frequency band), the communication speed may drop to megabit levels, failing to meet the requirements for high-speed data transmission.

[0004] A Chinese invention patent application, application number 201711362348.5, entitled "Centimeter-Level Short-Range Gigabit Wireless Optical Communication Device and Method," provides a technical solution that, due to the characteristics of wireless optical communication technology, enables high-speed, high-stability (no occasional interruptions), and low-latency wireless data transmission. However, the accompanying alignment solution (ZL201810338766.9, "Centimeter-Level Short-Range Wireless Optical Communication Alignment Device and Electromagnetic Alignment Method") is not suitable for meter-level wireless optical communication. When the distance between the two wireless optical communication parties exceeds centimeters and reaches meters, the alignment solution cannot achieve dynamic line of sight. Summary of the Invention

[0005] When the distance between two wireless optical communication devices reaches meters, both parties need to mount their devices on a bracket (such as a tripod) and adjust the bracket in three dimensions until they are aligned. However, even a small tightening action or even a single operation by the operator can cause the pointing direction to deviate, thus wasting all previous efforts and making alignment difficult. To easily achieve meter-level alignment of wireless optical communication devices, we have proposed a technical solution: a "non-contact magnetic locking alignment device and method for meter-level wireless optical communication."

[0006] The meter-level wireless optical communication contactless operation magnetic locking alignment device of the present invention is characterized in that the support column 1 is fixedly mounted on the base 2. Figure 1 、 Figure 2 As shown, the ball bearing 3 is fixed to the top of the support column 1, and a magnetic adjustment knob 4 is installed on the panel of the base 2; the ball bearing 3 is concave hemispherical and made of silicon nitride ceramic; the ferromagnetic spherical shaft 5 is convex hemispherical and made of ferromagnetic material, with the flat end face facing upward and the spherical surface facing downward; the curvature radius of the concave hemispherical shape is equal to that of the convex hemispherical shape, and the ferromagnetic spherical shaft 5 cooperates with the ball bearing 3 to form a movable support; the electromagnet 6 is located above the interior of the support column 1 and below the ball bearing 3, as shown in FIG. Figure 3 As shown, an electromagnet drive power supply, a magnetic locking control module, and a power supply module are also installed inside the support column 5; the magnetic adjustment knob 4, the magnetic locking control module, the electromagnet drive power supply, and the electromagnet 6 are electrically connected in sequence; the power supply module supplies power to the magnetic locking control module and the electromagnet drive power supply respectively; the non-contact alignment starting mechanism is installed in the box body 7, and the box body 7 is located on the plane end surface of the ferromagnetic spherical shaft 5, as shown in FIG. Figure 2 As shown, in the non-contact alignment activation mechanism, as Figure 4 As shown, the alignment main control module is electrically connected to the light emitting diode 8 and the photodiode 9 respectively; the alignment main control module is also electrically connected to the driving power supply and the indicator laser diode 10 in sequence; the indicator laser diode 10 is integrated with a collimating lens; the indicator laser diode 10 and the alignment auxiliary target 11 are installed on the panel of the box 7, as shown in FIG. Figure 1As shown, they are distributed left and right with the same height; the end face of the aiming auxiliary target 11 is in line with the light emitting direction of the indicator laser diode 10. The aiming auxiliary target 11 is made of colorless plastic, and the end face is regularly and densely covered with micro corner reflectors.

[0007] The present invention's non-contact magnetic locking and alignment method for meter-level wireless optical communication is characterized by:

[0008] First, install the coaxial transceiver wireless optical communication module in the box 7 and fix it on the non-contact alignment starting mechanism. The optical axis of the coaxial transceiver wireless optical communication module's optical antenna is parallel to the optical axis of the indicator laser diode. The optical antenna optical axis window 12 is located above the panel of the box 7 and centered in the left and right directions.

[0009] Secondly, the two communicating parties are 0.5 to 5.5 meters apart. The alignment master control module controls the light-emitting diode 8 to emit an alignment start light. The light reflected by any light reflector located in the light path of the light-emitting diode 8 is received by the photodiode 9, which converts it into an electrical signal and transmits it to the alignment master control module. After receiving the electrical signal, the alignment master control module controls the driving power supply to drive the indicator laser diode 10 to emit the alignment indicator light.

[0010] Third, the coaxial transceiver wireless optical communication module and the contactless alignment activation mechanism are integrated with the housing 7 and freely adjust their postures with the help of the ferromagnetic spherical shaft 5 and the ball bearing 3 until the alignment auxiliary targets 11 of the communicating parties are simultaneously illuminated by the alignment indicator light emitted by the indicator laser diode 10 of the other party;

[0011] Finally, the magnetic force adjustment knob 4 is rotated to provide a magnetic force control signal to the magnetic locking control module, which adjusts the driving current output by the electromagnet driving power supply to drive the electromagnet 6 to generate a locking magnetic force until the ferromagnetic spherical shaft 5 and the ball bearing 3 are relatively fixed.

[0012] The technical effects of the present invention are:

[0013] On the one hand, the present invention adopts wireless optical communication instead of radio communication, which meets the prerequisites of the present invention, namely, wireless data transmission with gigabit rate, high stability and low transmission delay of less than 1 millisecond.

[0014] On the other hand, compared with centimeter-level wireless optical communication, the difficulty of aligning and maintaining eye contact in meter-level wireless optical communication is significantly increased. The present invention places the meter-level wireless optical communication contactless operation magnetic locking alignment device carrying coaxial transceiver wireless optical communication modules on both sides of the communication roughly opposite to each other under naked eye observation, rotates the magnetic force adjustment knob 4, and preliminarily adjusts the magnitude of the magnetic force generated by the electromagnet 6, so that the rotational damping between the ferromagnetic spherical shaft 5 and the ball bearing 3 can take into account both stability and smoothness. In addition, the silicon nitride ceramic material of the ball bearing 3 is very smooth due to its small friction coefficient and very wear-resistant due to its high hardness. After the non-contact alignment starting mechanism is powered on, the operator only needs to use a hand sweep to make the internal alignment main control module send instructions to the drive power supply to drive the instruction laser diode 10 to emit alignment indication light. This hand sweeping method can avoid the previous any displacement that may be caused by the contact operation; manually fine-tune the posture of the contactless alignment starting mechanism, and the coaxial transceiver wireless optical communication module will change its posture accordingly. If the alignment auxiliary target 11 lights up, since the indicator laser diode 10 integrates a collimating lens, the emitted alignment indicator light is a thin beam, indicating that the alignment auxiliary target 11 is accurately illuminated by the other party's alignment indicator light, which means that the coaxial transceiver wireless optical communication modules of the communicating parties are aligned; finally, gently turn the magnetic adjustment knob 4 again until the magnetic force generated by the electromagnet 6 locks the ferromagnetic spherical shaft 5 on the ball bearing 3. This key link avoids the previous operator's last small action of locking the tripod to damage the already formed alignment state. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional schematic diagram of the external structure of the meter-level wireless optical communication contactless operation magnetic locking alignment device of the present invention.

[0016] Figure 2 This is a schematic diagram of the main structure of the meter-level wireless optical communication contactless operation magnetic locking and alignment device of the present invention, which also serves as an abstract illustration.

[0017] Figure 3 This is a schematic block diagram of the structure of the magnetic locking part in the non-contact magnetic locking alignment device for meter-level wireless optical communication.

[0018] Figure 4 This is a schematic block diagram of the structure of the non-contact alignment starting mechanism in the non-contact magnetic locking alignment device for meter-level wireless optical communication. The diagram also expresses the non-contact operation alignment to some extent. DETAILED DESCRIPTION

[0019] The contents that need to be further defined for the meter-level wireless optical communication contactless operation magnetic locking alignment device of the present invention include:

[0020] The ferromagnetic material is a carbon-containing iron-chromium-nickel alloy, has a strong magnetic moment, and can be strongly adsorbed by the electromagnet 6.

[0021] The surface roughness α of the silicon nitride ball bearing 3 is less than 0.1.

[0022] 3 to 5 magnetic columns are distributed along the circumference of the same size on the bottom surface of the box 7 and the planar end surface of the ferromagnetic spherical shaft 5. The magnetic columns are made of rubidium permanent magnets. The magnetic columns on the bottom surface of the box 7 correspond one to one with the magnetic columns on the planar end surface of the ferromagnetic spherical shaft 5, and their magnetic poles are opposite. The box 7 and the ferromagnetic spherical shaft 5 are adsorbed together, making disassembly and assembly convenient.

[0023] The electromagnet 6 is a suction cup DC electromagnet with a maximum suction force of 1 kg. The electromagnet drive power supply is a constant current drive device that can output a constant current corresponding to the set value. The magnetic force adjustment knob 4 is a high-precision potentiometer that can adjust the output magnetic force control voltage to the magnetic locking control module. The magnetic locking control module has an integrated ADC module that controls the electromagnet drive power supply to change its output current according to the magnetic force control voltage.

[0024] The colorless plastic is polytetrafluoroethylene.

[0025] The light emitting diode 8 and the photodiode 9 are located on the panel of the box 7. Figure 1 As shown, adjacent distribution.

Claims

1. A meter-level wireless optical communication contactless operation magnetic locking alignment device, characterized by: The support column (1) is fixed on the base (2), the ball bearing (3) is fixed on the top of the support column (1), and a magnetic adjustment knob (4) is installed on the panel of the base (2); the ball bearing (3) is concave hemispherical and made of silicon nitride ceramic; the ferromagnetic spherical shaft (5) is convex hemispherical and made of ferromagnetic material, with the flat end surface facing upward and the spherical surface facing downward; the curvature radius of the concave hemispherical shape is equal to that of the convex hemispherical shape, and the ferromagnetic spherical shaft (5) cooperates with the ball bearing (3) to form a movable support; the electromagnet (6) is located above the inside of the support column (1) and below the ball bearing (3), and an electromagnet drive power supply, a magnetic locking control module, and a power supply module are also installed inside the support column (1); the magnetic adjustment knob (4), the magnetic locking control module, the electromagnet drive power supply, and the electromagnet (6) are electrically connected in sequence; the power supply module is divided into The invention relates to a non-contact alignment starting mechanism, wherein the alignment main control module is electrically connected to the light emitting diode (8) and the photodiode (9) respectively; the alignment main control module is also electrically connected to the driving power supply and the indicating laser diode (10) in sequence; the indicating laser diode (10) is integrated with a collimating lens; the indicating laser diode (10) and the alignment auxiliary target (11) are installed on the panel of the box (7), distributed left and right, and with the same height; the end face of the alignment auxiliary target (11) is in the same direction as the light emitting direction of the indicating laser diode (10); the alignment auxiliary target (11) is made of colorless plastic, and micro-corner reflectors are regularly and densely distributed on the end face.

2. The meter-level wireless optical communication contactless operation magnetic locking alignment device according to claim 1 is characterized in that: The ferromagnetic material is a carbon-containing iron-chromium-nickel alloy and can be strongly adsorbed by the electromagnet (6).

3. The meter-level wireless optical communication contactless operation magnetic locking alignment device according to claim 1 is characterized in that: 3 to 5 magnetic columns are distributed along the circumference of the same size on the bottom surface of the box (7) and the plane end surface of the ferromagnetic spherical shaft (5). The magnetic columns are made of rubidium permanent magnets. The magnetic columns on the bottom surface of the box (7) correspond to the magnetic columns on the plane end surface of the ferromagnetic spherical shaft (5) one by one, and the magnetic poles are opposite, so that the box (7) and the ferromagnetic spherical shaft (5) are attracted to each other.

4. The meter-level wireless optical communication contactless operation magnetic locking alignment device according to claim 1, characterized in that: The electromagnet (6) is a suction cup type DC electromagnet with a maximum suction force of 1 kg; the electromagnet drive power supply is a constant current drive component, which can output a corresponding constant current according to a set value; the magnetic force adjustment knob (4) is a high-precision potentiometer, which can adjust the output magnetic force control voltage to the magnetic locking control module; the magnetic locking control module has an internal integrated ADC module, which controls the electromagnet drive power supply to change its output current according to the magnetic force control voltage.

5. The meter-level wireless optical communication contactless operation magnetic locking alignment device according to claim 1, characterized in that: The colorless plastic is polytetrafluoroethylene.

6. The meter-level wireless optical communication contactless operation magnetic locking alignment device according to claim 1, characterized in that: The light emitting diode (8) and the photodiode (9) are located on the panel of the box (7) and are distributed adjacent to each other.

7. A method for non-contact magnetic locking and alignment of meter-level wireless optical communication using the non-contact magnetic locking and alignment device for meter-level wireless optical communication according to claim 1, characterized in that: First, a coaxial transceiver wireless optical communication module is installed in a box (7) and fixed on the non-contact alignment starting mechanism, the optical antenna optical axis of the coaxial transceiver wireless optical communication module is parallel to the optical axis of the indicator laser diode, and the optical antenna optical axis window (12) is located above the panel of the box (7) and centered in the left and right directions; Secondly, the two communicating parties are 0.5 to 5.5 meters apart, and the alignment main control module controls the light emitting diode (8) to emit an alignment start light. The light reflected by any light reflecting object located in the light path of the light emitting diode (8) is received by the photodiode (9), which converts it into an electrical signal and transmits it to the alignment main control module. After receiving the electrical signal, the alignment main control module controls the driving power supply to drive the indicating laser diode (10) to emit the alignment indicating light. Third, the coaxial transceiver wireless optical communication module and the contactless alignment starting mechanism are freely adjusted along with the box (7) by means of the ferromagnetic spherical shaft (5) and the ball bearing (3) until the alignment auxiliary targets (11) of the communicating parties are simultaneously illuminated by the alignment indication light emitted by the indication laser diode (10) of the other party; Finally, the magnetic force adjustment knob (4) is rotated to provide a magnetic force control signal to the magnetic locking control module, and the magnetic locking control module adjusts the driving current output by the electromagnet driving power supply to drive the electromagnet (6) to generate a locking magnetic force until the ferromagnetic spherical shaft (5) and the ball bearing (3) are relatively fixed.

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