Anti-interference wireless signal transmitting board

Abstract

The utility model relates to an anti-interference wireless signal transmitting board, and belongs to the technical field of wireless signal transmitting boards, the anti-interference wireless signal transmitting board comprises a mounting board, the outer side of the mounting board is fixedly connected with a protective shell, the protective shell is internally provided with a substrate assembly, the substrate assembly comprises a double-layer PCB, the upper layer of the double-layer PCB is a signal wiring layer, and the lower layer of the double-layer PCB is a grounding layer. The beneficial effects of the utility model are that when an external signal enters the substrate assembly through the signal input line, the external signal enters the signal wiring layer after the out-of-band noise is filtered by the LC filter circuit board, the common mode choke suppresses the high-frequency common mode interference of the power supply circuit, and the nanocrystalline alloy film absorbs high-frequency electromagnetic waves through magnetic loss, so that the high-frequency interference of the power supply circuit can be suppressed. And meanwhile, the grounding layer forms a Faraday cage effect to shield low-frequency interference, so that full-band interference suppression of the substrate assembly can be realized under the synergistic effect of the nanocrystalline alloy film, the common-mode choke and the grounding layer, and signal communication can be more stable.

Description

Technical Field

[0001] This application relates to the field of wireless signal transmitter technology, and more particularly to an anti-interference wireless signal transmitter. Background Technology

[0002] With the discovery of electromagnetic waves and the gradual maturation of radio technology, wireless signal transmitting devices gradually moved from the laboratory to practical applications. From the initial wireless telegraph and radio broadcasting to later mobile communication and satellite communication, wireless signal transmitting devices have played an important role in information dissemination and communication.

[0003] Currently, wireless signal transmitters are widely used in fields such as the Internet of Things, smart terminals, and industrial control. However, in environments with high electromagnetic interference, traditional transmitters are easily affected by surrounding equipment or environmental noise, leading to signal attenuation, increased bit error rate, or even communication interruption. In addition, more and more small public places are installing wireless signal transmitters. In environments with a high concentration of oil fumes in the air, the fumes can enter through the heat dissipation holes on the wireless signal transmitter and then cover its surface to form a thin film of oil stains, which will affect the transmission of signals. Utility Model Content

[0004] In view of the above-mentioned problems existing in the prior art, the main objective of this application is to provide an anti-interference wireless signal transmitting board.

[0005] The technical solution of this application is as follows: an anti-interference wireless signal transmitting board includes a mounting plate, a protective shell fixedly connected to the outer side of the mounting plate, a substrate assembly disposed inside the protective shell, the substrate assembly including a double-layer PCB board, the upper layer of the double-layer PCB board being a signal trace layer, the lower layer of the double-layer PCB board being a ground layer, an LC filter circuit board fixedly mounted on the inner wall of the protective shell, the LC filter circuit board being connected to the signal input terminal of the double-layer PCB board, a signal input line fixedly connected to the signal input terminal of the double-layer PCB board, a common-mode choke fixedly mounted at the bottom of the inner wall of the protective shell, a nanocrystalline alloy film covering the outer wall of the signal trace layer, conductive adhesive being disposed between the signal trace layer and the ground layer, and the nanocrystalline alloy film being connected to the ground layer through the conductive adhesive.

[0006] By adopting the above technical solutions, out-of-band noise can be filtered out through the LC filter circuit board, while the common-mode choke will suppress high-frequency common-mode interference of the power supply line, and the nanocrystalline alloy thin film will absorb high-frequency electromagnetic waves through magnetic loss. At the same time, the grounding layer forms a Faraday cage effect to shield low-frequency interference.

[0007] In a preferred embodiment, the protective shell is provided with a cleaning component inside. The cleaning component includes an opening on one side of the protective shell, a fixing bracket is fixedly connected to the opening, and a fan is fixedly installed inside the fixing bracket.

[0008] By adopting the above technical solution, the airflow inside the protective shell can be accelerated through the combined use of the mounting bracket and the fan, thereby improving the heat dissipation efficiency of the substrate assembly.

[0009] In a preferred embodiment, the cleaning assembly further includes a filter plate disposed at the opening, a filter screen fixedly connected inside the filter plate, and a cleaning strip fixedly connected to the output shaft of the fan passing through the filter screen.

[0010] By adopting the above technical solution, the rotation of the output shaft of the fan can drive the cleaning strip at one end to make a circular motion, thereby cleaning the oil stains with the help of the cleaning strip.

[0011] In a preferred embodiment, mounting blocks are fixedly connected to all four sides of the filter plate, and locking bolts are provided inside the mounting blocks. The mounting blocks are connected to the protective shell by locking bolts.

[0012] By adopting the above technical solution and using locking bolts, the filter plates and filter screens can be replaced and cleaned.

[0013] In a preferred embodiment, the brush of the cleaning strip is in contact with the filter screen, a power line is fixedly connected to the bottom of the protective shell, and the common mode choke is connected in series with the power line.

[0014] By adopting the above technical solution and setting up the power supply line, it is possible to supply power to the electrical equipment on the protective shell.

[0015] In a preferred embodiment, the protective housing has an access door hinged to its side wall, and the signal cabling layer uses a serpentine wiring configuration.

[0016] By adopting the above technical solution and using a serpentine routing design, signal crosstalk can be reduced.

[0017] In a preferred embodiment, mounting holes are provided around the inside of the mounting plate, and fixing screws are provided inside each mounting hole.

[0018] By adopting the above technical solution and using the fixing screws, the mounting plate can be easily installed.

[0019] Compared with the prior art, the advantages and positive effects of this application are as follows:

[0020] 1. In this application, when an external signal enters the substrate assembly through the signal input line, it will be filtered out by the LC filter circuit board to remove out-of-band noise before entering the signal trace layer. The common-mode choke will suppress high-frequency common-mode interference of the power line, and the nanocrystalline alloy thin film will absorb high-frequency electromagnetic waves through magnetic loss. At the same time, the ground layer forms a Faraday cage effect to shield low-frequency interference. Thus, under the synergistic effect of the nanocrystalline alloy thin film, the common-mode choke and the ground layer, full-band interference suppression of the substrate assembly can be achieved, thereby making signal communication more stable.

[0021] 2. In this application, by setting up a filter screen, oil stains in the fumes can be blocked, thereby reducing the amount of fumes entering the protective shell through the opening. When the output shaft of the fan rotates, it will drive the cleaning strip at one end to make a circular motion, thereby cleaning the oil stains with the help of the cleaning strip to restore the heat dissipation effect of the fan. Attached Figure Description

[0022] Figure 1 An overall perspective view of an anti-interference wireless signal transmitting board provided in this application;

[0023] Figure 2 A side view of an anti-interference wireless signal transmitter board provided in this application;

[0024] Figure 3 A schematic diagram of a cleaning component for an anti-interference wireless signal transmitter board provided in this application;

[0025] Figure 4 This application provides an anti-interference wireless signal transmitter board. Figure 2 Enlarged view of point A in the middle.

[0026] Legend: 1. Mounting plate; 2. Signal input line; 3. Power line; 4. Protective housing; 5. Inspection door; 6. Substrate assembly; 601. Double-layer PCB board; 602. Signal trace layer; 603. Grounding layer; 604. Conductive adhesive; 605. Nanocrystalline alloy film; 7. LC filter circuit board; 8. Common mode choke; 9. Filter plate; 10. Mounting bracket; 11. Fan; 12. Mounting block; 13. Locking bolt; 14. Filter screen. Detailed Implementation

[0027] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0028] Reference Figure 1-4An anti-interference wireless signal transmitting board includes a mounting plate 1, a protective shell 4 fixedly connected to the outer side of the mounting plate 1, a substrate assembly 6 disposed inside the protective shell 4, the substrate assembly 6 including a double-layer PCB board 601, the upper layer of the double-layer PCB board 601 being a signal routing layer 602, the lower layer of the double-layer PCB board 601 being a ground layer 603, an LC filter circuit board 7 fixedly mounted on the inner wall of the protective shell 4, the LC filter circuit board 7 being connected to the signal input terminal of the double-layer PCB board 601, a signal input line 2 fixedly connected to the signal input terminal of the double-layer PCB board 601, a common-mode choke 8 fixedly mounted at the bottom of the inner wall of the protective shell 4, and a nanocrystalline alloy thin film 605 covering the outer wall of the signal routing layer 602. Conductive adhesive 604 is provided between 602 and ground layer 603. Nanocrystalline alloy film 605 is connected to ground layer 603 through conductive adhesive 604. When an external signal enters the substrate assembly 6 through signal input line 2, it will be filtered out by LC filter circuit board 7 before entering signal trace layer 602. Common mode choke 8 will suppress high-frequency common mode interference of power line 3, and nanocrystalline alloy film 605 will absorb high-frequency electromagnetic waves through magnetic loss. At the same time, ground layer 603 forms Faraday cage effect to shield low-frequency interference. Thus, under the synergistic effect of nanocrystalline alloy film 605, common mode choke 8 and ground layer 603, full-band interference suppression of substrate assembly 6 can be achieved, thereby making signal communication more stable.

[0029] Specifically, the protective shell 4 has a cleaning assembly inside. This assembly includes an opening on one side of the protective shell 4, with a mounting bracket 10 fixedly connected to the opening. The mounting bracket 10, in conjunction with a fan 11, accelerates airflow within the protective shell 4, thereby improving the heat dissipation efficiency of the substrate assembly 6. The fan 11 is fixedly installed inside the mounting bracket 10. The cleaning assembly also includes a filter plate 9 located at the opening, with a filter screen 14 fixedly connected inside the filter plate 9. The filter screen 14 blocks oil stains from the fumes, thus reducing the amount of fumes passing through. An opening is made to enter the protective shell 4. When the output shaft of the fan 11 rotates, it drives the cleaning strip at one end to make a circular motion, thereby cleaning the oil stains with the help of the cleaning strip to restore the heat dissipation effect of the fan 11. The output shaft of the fan 11 passes through the filter screen 14 and is fixedly connected to the cleaning strip. Mounting blocks 12 are fixedly connected to all four sides of the filter plate 9. Locking bolts 13 are provided inside the mounting blocks 12. The setting of locking bolts 13 allows for the replacement and cleaning of the filter plate 9 and the filter screen 14. The mounting blocks 12 and the protective shell 4 are connected by locking bolts 13.

[0030] Specifically, the brush of the cleaning strip contacts the filter screen 14, and a power line 3 is fixedly connected to the bottom of the protective shell 4. The power line 3 provides power to the electrical equipment on the protective shell 4. A common mode choke 8 is connected in series with the power line 3. An inspection door 5 is hinged to the side wall of the protective shell 4. The signal routing layer 602 adopts a serpentine wiring arrangement. The serpentine wiring design can reduce signal crosstalk. Mounting holes are opened on all four sides inside the mounting plate 1. Fixing screws are set inside the mounting holes. The fixing screws facilitate the installation of the mounting plate 1.

[0031] Working principle: First, the operator can install the mounting plate 1 in the designated area using fixing screws. In daily use, the cooperation of the fixing bracket 10 and the fan 11 can accelerate the airflow inside the protective shell 4, thereby improving the heat dissipation efficiency of the base plate assembly 6. The filter screen 14 can block oil stains in the fumes, thereby reducing the amount of fumes entering the protective shell 4 through the openings. When the output shaft of the fan 11 rotates, it drives the cleaning strip at one end to move in a circular motion, thereby cleaning the oil stains and restoring the heat dissipation of the fan 11. The signal transmission is effective, and when an external signal enters the substrate assembly 6 through the signal input line 2, it will be filtered out by the LC filter circuit board 7 before entering the signal trace layer 602. The common mode choke 8 will suppress the high-frequency common mode interference of the power line 3, and the nanocrystalline alloy film 605 will absorb high-frequency electromagnetic waves through magnetic loss. At the same time, the ground layer 603 forms a Faraday cage effect to shield low-frequency interference. Thus, under the synergistic effect of the nanocrystalline alloy film 605, the common mode choke 8 and the ground layer 603, the full-band interference suppression of the substrate assembly 6 can be achieved, thereby making the signal communication more stable.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" 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 an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0033] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An anti-interference wireless signal transmitting board, comprising a mounting plate (1), characterized in that: A protective shell (4) is fixedly connected to the outside of the mounting plate (1). A substrate assembly (6) is disposed inside the protective shell (4). The substrate assembly (6) includes a double-layer PCB board (601). The upper layer of the double-layer PCB board (601) is a signal trace layer (602), and the lower layer of the double-layer PCB board (601) is a ground layer (603). An LC filter circuit board (7) is fixedly installed on the inner wall of the protective shell (4). The LC filter circuit board (7) and the double-layer PCB board (601) are connected. The signal input terminals of the double-layer PCB (601) are connected to the signal input terminals. A signal input line (2) is fixedly connected to the signal input terminal of the double-layer PCB (601). A common-mode choke (8) is fixedly installed at the bottom of the inner wall of the protective shell (4). A nanocrystalline alloy film (605) is covered on the outer wall of the signal trace layer (602). A conductive adhesive (604) is provided between the signal trace layer (602) and the ground layer (603). The nanocrystalline alloy film (605) is connected to the ground layer (603) through the conductive adhesive (604).

2. The anti-interference wireless signal transmitting board according to claim 1, characterized in that: The protective shell (4) is provided with a cleaning component inside. The cleaning component includes an opening on one side of the protective shell (4). A fixing frame (10) is fixedly connected to the opening. A fan (11) is fixedly installed inside the fixing frame (10).

3. The anti-interference wireless signal transmitting board according to claim 2, characterized in that: The cleaning assembly also includes a filter plate (9) disposed at the opening, a filter screen (14) is fixedly connected inside the filter plate (9), and the output shaft of the fan (11) passes through the filter screen (14) and is fixedly connected to a cleaning strip.

4. The anti-interference wireless signal transmitting board according to claim 3, characterized in that: The filter plate (9) is fixedly connected to the surrounding area by mounting blocks (12), and each mounting block (12) is provided with a locking bolt (13). The mounting block (12) and the protective shell (4) are connected by the locking bolt (13).

5. The anti-interference wireless signal transmitting board according to claim 3, characterized in that: The brush of the cleaning strip is in contact with the filter screen (14), and the bottom of the protective shell (4) is fixedly connected to the power line (3). The common mode choke (8) is connected in series with the power line (3).

6. The anti-interference wireless signal transmitting board according to claim 1, characterized in that: The protective shell (4) has an inspection door (5) hinged to its side wall, and the signal wiring layer (602) is configured with serpentine wiring.

7. The anti-interference wireless signal transmitting board according to claim 1, characterized in that: The mounting plate (1) has mounting holes on all four sides inside, and each mounting hole is fitted with a fixing screw.

Images