A visible light communication test system

Abstract

The present invention discloses a visible light communication test system, including a frame, provided with a first displacement mechanism; a transmitting mechanism, including a transmitting end and a second displacement mechanism, the second displacement mechanism is connected to the first displacement mechanism, and the transmitting end is connected to the second displacement mechanism; a receiving mechanism, including a receiving end and a third displacement mechanism, the third displacement mechanism is connected to the first displacement mechanism, and the receiving end is connected to the third displacement mechanism; and a lifting mechanism is arranged on the frame. In this way, the first displacement mechanism, the second displacement mechanism, the third displacement mechanism and the lifting mechanism are used to drive the transmitting end and the receiving end to perform longitudinal, lateral and vertical displacements respectively, so as to test the farthest communication distance, the maximum lateral communication distance and the illumination range.

Description

Technical Field

[0001] The present invention relates to the technical field of communication testing, and in particular to a visible light communication testing system. Background Art

[0002] Visible light communication technology uses high-speed light and dark flashing signals emitted by fluorescent lamps or LEDs that are invisible to the naked eye to transmit information. The system made using this technology can cover the range of indoor lighting, and the computer does not need to be connected by wires, which has broad development prospects. Its communication speed can reach tens to hundreds of megabits per second, and the transmission speed may exceed optical fiber communication in the future. Using dedicated computers and mobile information terminals that can receive and send signals, high-definition images and animations can be downloaded and uploaded for a long time as long as they are in the place where indoor lights shine. Moreover, the spectrum is 10,000 times larger than the radio spectrum, which means greater bandwidth and higher speed, and network settings require almost no new infrastructure. LED lighting optical wireless communication is in the initial and exploratory stage both at home and abroad, but it has a good application prospect. It can not only be used for indoor wireless access, but also provide a new method for mobile navigation and positioning of urban vehicles. Automobile lighting lamps basically use LED lamps, which can form communication links between cars and traffic control centers, traffic lights to cars, and cars to cars.

[0003] However, there are currently very few devices specifically used to test the communication effects and communication parameters when the transmitter and the receiver are in different positions, or when the transmitter and the receiver are in motion, and it is impossible to test the optimal arrangement position of the transmitter and the receiver. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a visible light communication test system, which adjusts the distance parameter between the transmitter and the receiver through a moving mechanism to test the optimal arrangement position of the transmitter and the receiver, and can also perform communication tests on the transmitter and the receiver in motion.

[0005] A visible light communication test system according to an embodiment of the present invention includes:

[0006] A frame is provided with a first displacement mechanism;

[0007] The launching mechanism comprises a launching end and a second displacement mechanism, wherein the second displacement mechanism is connected to the first displacement mechanism, and the launching end is connected to the second displacement mechanism;

[0008] A receiving mechanism, comprising a receiving end and a third displacement mechanism, wherein the third displacement mechanism is connected to the first displacement mechanism, and the receiving end is connected to the third displacement mechanism;

[0009] A lifting mechanism is arranged on the frame;

[0010] Among them, the first displacement mechanism can drive the second displacement mechanism to displace along the X-axis direction, the third displacement mechanism can displace along the X-axis direction on the first displacement mechanism, the second displacement mechanism and the third displacement mechanism can respectively drive the transmitting end and the receiving end to displace along the Y-axis direction, and the lifting mechanism can drive the receiving mechanism to displace along the Z-axis direction.

[0011] A visible light communication test system according to an embodiment of the present invention has at least the following beneficial effects: the second displacement mechanism is driven by the first displacement mechanism to displace along the X-axis direction, the third displacement mechanism can be displaced on the first displacement mechanism along the X-axis direction, so that the transmitter and the receiver can communicate at different positions in the X-axis direction, the second displacement mechanism and the third displacement mechanism can respectively drive the transmitter and the receiver to displace along the Y-axis direction, combined with the displacement in the X-axis direction, so that the transmitter and the receiver can communicate at different positions on the horizontal plane, and the lifting mechanism can drive the receiver to displace along the Z-axis, thereby achieving the optimal layout of the transmitter and the receiver at different positions in the three-dimensional space, and at the same time, the farthest communication distance and the maximum lateral communication distance can be tested, thereby measuring the entire illumination range of the transmitter.

[0012] According to some embodiments of the present invention, the first displacement mechanism includes a belt assembly and two racks, the belt assembly includes a belt movably arranged on the frame and a first motor, the belt is provided with a limiting portion for clamping the second displacement mechanism, the two racks are both arranged on the frame and are respectively located on the outside of the belt, and the first motor is used to drive the belt to rotate.

[0013] According to some embodiments of the present invention, the second displacement mechanism includes a base, a Y-axis moving assembly and a fixed plate, the base is connected to the limiting portion of the belt, the Y-axis moving assembly is arranged on the base, the fixed plate is movably arranged on the Y-axis moving assembly, the transmitting end is connected to the fixed plate, and the Y-axis moving assembly is used to drive the fixed plate to displace along the Y-axis direction.

[0014] According to some embodiments of the present invention, the third displacement mechanism includes a gear assembly, a Y-axis moving assembly and a fixed plate, the gear assembly meshes with the rack, the Y-axis moving assembly is arranged on the gear assembly, and the fixed plate is movably arranged on the Y-axis moving assembly, the gear assembly can drive the Y-axis moving assembly and the fixed plate to displace along the rack, the Y-axis moving assembly is used to drive the fixed plate to displace along the Y-axis direction, and the receiving end is connected to the fixed plate.

[0015] According to some embodiments of the present invention, the gear assembly includes a mounting frame and a second motor and two gears respectively arranged on the mounting frame, the two gears are respectively meshed with the two racks, and the upper end of the mounting frame is connected to the Y-axis moving assembly.

[0016] According to some embodiments of the present invention, two guide wheels are further included, and the two guide wheels are respectively arranged on the mounting frame, and the frame is provided with guide grooves matching the guide wheels.

[0017] According to some embodiments of the present invention, the Y-axis moving assembly includes a base plate, a third motor, a lead screw and a slider assembly, the third motor is arranged on the base plate, the lead screw is connected to the output shaft of the third motor, the slider assembly is threadedly connected to the lead screw, a slide rail is arranged on the base plate, the lower end of the slider assembly is slidably connected to the slide rail, and the fixed plate is arranged on the slider assembly.

[0018] According to some embodiments of the present invention, a plurality of mounting through holes are provided on the fixing plate.

[0019] According to some embodiments of the present invention, the lifting mechanism includes a lifting bracket, a screw rod and a rotating handle, the lifting bracket is movably connected to the frame, the rod body of the screw rod is threadedly connected to the frame, the upper end is connected to the lifting bracket, the rotating handle is arranged on the screw rod, and the upper end of the lifting bracket is connected to the rack.

[0020] According to some embodiments of the present invention, moving wheels are arranged below the frame.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0023] Figure 1 It is a structural schematic diagram of a visible light communication test system of the present invention;

[0024] Figure 2 for Figure 1 A partially enlarged schematic diagram of a visible light communication test system is shown;

[0025] Figure 3 It is a structural schematic diagram of the receiving mechanism of the present invention.

[0026] Frame 100, guide groove 110;

[0027] The first displacement mechanism 200, the belt assembly 210, the belt 211, the limiting portion 2111, the first motor 212, and the rack 220;

[0028] Launching mechanism 300, launching end 310, second displacement mechanism 320, base 321, Y-axis moving assembly 322, bottom plate 3221, third motor 3222, lead screw 3223, slider assembly 3224, fixing plate 323, mounting through hole 3231;

[0029] Receiving mechanism 400, receiving end 410, third displacement mechanism 420, gear assembly 421, mounting frame 4211, gear 4212, guide wheel 4213, second motor 4214;

[0030] Lifting mechanism 500, lifting bracket 510, screw rod 520, rotating handle 530;

[0031] Moving wheel 600. DETAILED DESCRIPTION

[0032] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0033] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0035] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0036] Reference Figures 1 to 3According to an embodiment of the present invention, a visible light communication test system includes a rack 100, on which a first displacement mechanism 200, a transmitting mechanism 300, a receiving mechanism 400 and a lifting mechanism 500 are installed, the transmitting mechanism 300 includes a transmitting end 310 and a second displacement mechanism 320, the second displacement mechanism 320 is installed on the first displacement mechanism 200, the transmitting end 310 is installed on the second displacement mechanism 320, the receiving mechanism 400 includes a receiving end 410 and a third displacement mechanism 420, the third displacement mechanism is connected to the first displacement mechanism 200, and the receiving end is connected to the third displacement mechanism 420, wherein the first displacement mechanism 200 can drive the second displacement mechanism 320 to move along the X-axis direction, thereby driving the transmitting end 310 to move along the X-axis direction, and the third displacement mechanism 420 The first displacement mechanism 200 can be displaced along the X-axis direction by itself, thereby driving the receiving end 410 to be displaced along the X-axis direction on the first displacement mechanism 200. By moving the transmitting end 310 and the receiving end 410 to different positions in the X-axis direction, the optimal communication distance between the two can be tested. At the same time, the test can be performed during the movement of the transmitting end 310 and the receiving end 410 to test the farthest communication distance between the two. The second displacement mechanism 320 and the third displacement mechanism 420 can respectively drive the transmitting end 310 and the receiving end 410 to be displaced along the Y-axis direction, thereby testing the maximum lateral communication distance when the transmitting and receiving ends are at different distances in the Y-axis direction. Combined with the lifting mechanism 500, the receiving mechanism 400 can be driven to be displaced along the Z-axis direction, and the entire illumination range of the transmitting and receiving end can be comprehensively measured.

[0037] It should be noted that the X-axis, Y-axis, and Z-axis directions indicated in the diagram correspond to the front and back, left and right, and up and down, or the longitudinal, horizontal, and vertical directions that appear in the context, respectively.

[0038] A visible light communication test system according to an embodiment of the present invention has at least the following beneficial effects: the second displacement mechanism 320 is driven to displace along the X-axis direction by the first displacement mechanism 200, and the third displacement mechanism 420 can be displaced along the X-axis direction on the first displacement mechanism 200, so that the transmitting end 310 and the receiving end 410 can communicate at different positions in the X-axis direction, the second displacement mechanism 320 and the third displacement mechanism 420 can respectively drive the transmitting end 310 and the receiving end 410 to displace along the Y-axis direction, and combined with the displacement in the X-axis direction, the transmitting end 310 and the receiving end 410 can communicate at different positions on the horizontal plane, and the lifting mechanism 500 can drive the receiving end 410 to displace along the Z-axis, thereby realizing the optimal layout of the transmitting end 310 and the receiving end 410 at different positions in the three-dimensional space, and at the same time, the farthest communication distance and the maximum lateral communication distance can be tested, thereby measuring the entire illumination range of the transmitting end 310.

[0039] The above test is a one-to-one communication test. Since the light source is a point light source and the illuminated area is an ellipsoidal distribution in which the light signal gradually attenuates, there will be a lack of illumination during longitudinal movement during the communication process. Based on this situation, two-to-one, three-to-one or many-to-one communication can be adopted. The transmitting end 310 is set to two or more to increase the illumination range, so that the receiving end 410 has a larger movement space when moving horizontally and vertically. In this case, through the lateral and longitudinal movement of the receiving end 410, the maximum illumination communication range and the maximum lateral movement distance under the optimal layout of the transmitting end 310 can be tested.

[0040] The above test has two transceiver modes connected to the host end. Mode one is that the host is directly connected to the transmitting end 310. After the information to be sent is transmitted to the receiving end 410, the receiving end 410 transmits the signal to the host; Mode two is that the host is connected to wireless module one, and the signal is transmitted to the transmitting end 310 through wireless module one, and then the signal is transmitted to wireless module two at the receiving end 410. Wireless module two is connected to the host, and the signal can display the transmission effect in real time on the host.

[0041] According to some embodiments of the present invention, referring to Figure 1 and Figure 2 The first displacement mechanism 200 includes a belt assembly 210 and two racks 220. The belt assembly 210 includes a first motor 212 and a belt 211. The belt 211 is movably mounted on the frame 100. The first motor 212 drives the belt 211 to rotate on the frame 100, thereby driving the second displacement mechanism 320 to displace along the X-axis direction on the frame 100. A limiting portion 2111 is provided on the belt 211. The limiting portion 2111 is used to clamp the second displacement mechanism 320. The two racks 220 are mounted on the frame 100 and are respectively mounted on both sides of the belt 211 and are arranged parallel to the X-axis. The second displacement mechanism 320 can be driven smoothly by the belt 211, and is not prone to shaking and has low noise.

[0042] According to some embodiments of the present invention, referring to Figure 2 and Figure 3 The second displacement mechanism 320 includes a base 321, a Y-axis moving component 322 and a fixed plate 323. The base 321 is clamped to the limiting portion 2111 on the belt 211. The Y-axis moving component 322 is fixedly installed on the base 321. The fixed plate 323 is movable and installed on the Y-axis moving component 322. The transmitting end 310 is fixedly installed on the fixed plate 323. The Y-axis moving component 322 can drive the fixed plate 323 to move along the Y-axis direction, thereby driving the transmitting end 310 to move along the Y-axis direction, so that the transmitting end 310 can transmit signals at different positions of the Y-axis to test the optimal transmitting position.

[0043] According to some embodiments of the present invention, referring to Figure 3 The third displacement mechanism 420 includes a gear assembly 421, a Y-axis moving assembly 322 and a fixed plate 323. The gear assembly 421 is meshed with the rack 220. The Y-axis moving assembly 322 is installed on the gear assembly 421. The fixed plate 323 is movably installed on the Y-axis moving assembly 322. The gear assembly 421 can drive the Y-axis moving assembly 322 and the fixed plate 323 to displace along the X-axis direction on the rack 220. The Y-axis moving assembly 322 can drive the fixed plate 323 to displace along the Y-axis direction, thereby driving the receiving end 410 to displace along the Y-axis direction, so that the receiving end 410 can receive signals at different positions of the Y-axis, and the maximum lateral movement distance is tested after combining with the displacement of the transmitting end 310.

[0044] In the above embodiment, referring to Figure 3 The gear assembly 421 includes a mounting frame 4211, a second motor 4214 and two gears 4212. The output shaft of the second motor 4214 is connected to the two gears 4212. The two gears 4212 are respectively hinged on the mounting frame 4211. The second motor 4214 is fixedly mounted on the mounting frame 4211. The two gears 4212 are respectively engaged with two racks 220. The upper end of the mounting frame 4211 is connected to the Y-axis moving assembly 322. The lower end of the mounting frame 4211 is slidably mounted on the slide rail on the side of the frame 100. The gear 4212 cooperates with the rack 220 to make the displacement of the receiving end 410 more precise and the test result more accurate.

[0045] In the above embodiment, referring to Figure 3 , and also includes two guide wheels 4213, which are respectively hinged on the mounting frame 4211, and guide grooves 110 matching the guide wheels 4213 are correspondingly arranged on the frame 100 along the X-axis direction. The guide wheels 4213 are used to guide the displacement of the mounting frame 4211 to avoid deviation in the displacement of the mounting frame 4211.

[0046] According to some embodiments of the present invention, referring to Figure 3The Y-axis moving assembly 322 includes a base plate 3221, a third motor 3222, a lead screw 3223 and a slider assembly 3224. When the Y-axis moving assembly 322 is in the launching mechanism 300, the base plate 3221 is mounted on the base 321. When the Y-axis moving assembly 322 is in the receiving mechanism 400, the base plate 3221 is mounted on the mounting frame 4211. The third motor 3222 is fixedly mounted on the base plate 3221. The front and rear sides of the base plate 3221 are provided with slide rails. The lead screw 3223 is connected to the output shaft of the third motor 3222. The slide rails are provided on the front and rear sides of the base plate 3221. The block assembly 3224 is threadedly connected to the lead screw 3223, and the lower end of the slider assembly 3224 is slidably connected to the slide rail. The fixed plate 323 is installed on the slider assembly 3224. The lead screw 3223 is driven to rotate by the third motor 3222, driving the slider assembly 3224 to move along the lead screw 3223, thereby driving the fixed plate 323 to move along the lead screw 3223, that is, to move along the Y-axis direction. The lead screw 3223 can be used to stably drive the fixed plate 323 to ensure the stability and accuracy of the receiving and sending signal test.

[0047] According to some embodiments of the present invention, referring to Figure 2 or Figure 3 A plurality of mounting through holes 3231 are provided on the fixing plate 323, and the plurality of mounting through holes 3231 can be formed into a plurality of groups for mounting the transmitting end 310 and the receiving end 410, so as to mount a plurality of transmitting ends 310 and the receiving end 410 or to mount the transmitting end 310 and the receiving end 410 at different positions.

[0048] According to some embodiments of the present invention, referring to Figure 1 The lifting mechanism 500 includes a lifting bracket 510, a screw rod 520 and a rotating handle 530. The lifting bracket 510 is movably installed on the frame 100. The rod body of the screw rod 520 is threadedly connected to the frame 100, and its upper end is installed on the lifting bracket 510. The rotating handle 530 is installed on the screw rod 520. The upper end of the lifting bracket 510 is connected to the lower end of the rack 220. By rotating the rotating handle 530, the lifting bracket 510 can be driven to rise, thereby driving the rack 220 to rise, so that the receiving end 410 can be displaced in the Z-axis direction.

[0049] According to some embodiments of the present invention, referring to Figure 1 A plurality of moving wheels 600 are installed under the rack 100 so that the rack 100 can be displaced, which is convenient for carrying the rack 100 .

[0050] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A visible light communication test system, characterized in that: include: A frame is provided with a first displacement mechanism; The launching mechanism comprises a launching end and a second displacement mechanism, wherein the second displacement mechanism is connected to the first displacement mechanism, and the launching end is connected to the second displacement mechanism; A receiving mechanism, comprising a receiving end and a third displacement mechanism, wherein the third displacement mechanism is connected to the first displacement mechanism, and the receiving end is connected to the third displacement mechanism; A lifting mechanism is arranged on the frame; Among them, the first displacement mechanism can drive the second displacement mechanism to displace along the X-axis direction, the third displacement mechanism can displace along the X-axis direction on the first displacement mechanism, the second displacement mechanism and the third displacement mechanism can respectively drive the transmitting end and the receiving end to displace along the Y-axis direction, and the lifting mechanism can drive the receiving mechanism to displace along the Z-axis direction.

2. A visible light communication test system according to claim 1, characterized in that: The first displacement mechanism includes a belt assembly and two racks. The belt assembly includes a belt movably arranged on the frame and a first motor. The belt is provided with a limiting portion for clamping the second displacement mechanism. The two racks are both arranged on the frame and are respectively located on the outside of the belt. The first motor is used to drive the belt to rotate.

3. A visible light communication test system according to claim 2, characterized in that: The second displacement mechanism includes a base, a Y-axis moving component and a fixed plate, the base is connected to the limiting portion of the belt, the Y-axis moving component is arranged on the base, the fixed plate is movably arranged on the Y-axis moving component, the transmitting end is connected to the fixed plate, and the Y-axis moving component is used to drive the fixed plate to displace along the Y-axis direction.

4. A visible light communication test system according to claim 2, characterized in that: The third displacement mechanism includes a gear assembly, a Y-axis moving assembly and a fixed plate, the gear assembly meshes with the rack, the Y-axis moving assembly is arranged on the gear assembly, and the fixed plate is movably arranged on the Y-axis moving assembly, the gear assembly can drive the Y-axis moving assembly and the fixed plate to displace along the rack, the Y-axis moving assembly is used to drive the fixed plate to displace along the Y-axis direction, and the receiving end is connected to the fixed plate.

5. A visible light communication test system according to claim 4, characterized in that: The gear assembly includes a mounting frame, a second motor and two gears respectively arranged on the mounting frame, the two gears are respectively meshed with the two racks, and the upper end of the mounting frame is connected to the Y-axis moving assembly.

6. A visible light communication test system according to claim 5, characterized in that: It also includes two guide wheels, which are respectively arranged on the mounting frame, and the frame is provided with guide grooves matching the guide wheels.

7. A visible light communication test system according to claim 3 or 4, characterized in that: The Y-axis moving assembly includes a base plate, a third motor, a lead screw and a slider assembly, the third motor is arranged on the base plate, the lead screw is connected to the output shaft of the third motor, the slider assembly is threadedly connected to the lead screw, a slide rail is arranged on the base plate, the lower end of the slider assembly is slidably connected to the slide rail, and the fixed plate is arranged on the slider assembly.

8. A visible light communication test system according to claim 3 or 4, characterized in that: The fixing plate is provided with a plurality of mounting through holes.

9. A visible light communication test system according to claim 2, characterized in that: The lifting mechanism includes a lifting bracket, a screw rod and a rotating handle. The lifting bracket is movably connected to the frame. The rod body of the screw rod is threadedly connected to the frame and the upper end is connected to the lifting bracket. The rotating handle is arranged on the screw rod. The upper end of the lifting bracket is connected to the rack.

10. A visible light communication test system according to claim 1, characterized in that: Moving wheels are arranged below the frame.

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