High-precision anti-interference device

Abstract

The utility model discloses a high-precision anti-interference device, which comprises a sealing shell, an anti-interference module, a heat dissipation mechanism and an electrostatic adsorption assembly, an installation cavity is formed in the sealing shell, the tail part and the side wall of the sealing shell are respectively provided with an air inlet hole and an air outlet hole, the anti-interference module is arranged in the installation cavity, and the heat dissipation mechanism is arranged in the installation cavity. The heat dissipation mechanism comprises an air inlet fan arranged at the air inlet hole and used for driving external air to enter the installation cavity. And the electrostatic adsorption assembly is arranged on an air inlet path of the air inlet fan and is used for adsorbing dust in the air flow to prevent the dust from entering the mounting cavity. According to the technical scheme, effective heat dissipation is carried out on the interior of the device, so that the temperature in the device is kept stable, and dust and conductive dust in airflow can be effectively adsorbed in the air guiding and heat dissipation process, so that the dust and the conductive dust are prevented from entering the mounting cavity.

Description

TECHNICAL FIELD

[0001] The utility model relates to communication technical field, especially a kind of high-precision anti-interference device. BACKGROUND

[0002] High-precision anti-interference device is a kind of equipment that can still accurately receive target signal and provide high-precision output in complex interference signal environment. It is widely used in wireless communication, satellite navigation, radar detection, scientific measurement and other fields, aiming to ensure that receiving system can still work effectively under various interference environments, avoid external interference leading to signal distortion or receiving failure.

[0003] The device is integrated with a large number of high-frequency circuits and complex signal processing units inside, which will consume a lot of power and generate heat during operation. If the device overheats, it may cause the performance of electronic components to decline, leading to signal distortion, processing delay or errors, ultimately affecting the accuracy and stability of the receiving system.

[0004] Currently, most devices are equipped with cooling fans for active cooling. However, during air-guided cooling, dust and conductive dust in the air may enter the device interior with the airflow. These particulate matters can cause serious damage to the circuit, even cause short circuit or lead to high-frequency signal reflection, thereby affecting the service life and stability of the anti-interference module. UTILITY MODEL CONTENT

[0005] The main purpose of the utility model is to provide a kind of high-precision anti-interference device, aiming at avoiding damage to internal devices due to high temperature of equipment, and being able to realize efficient dust removal treatment, maintain the stability of the device.

[0006] To achieve the above purpose, the high-precision anti-interference device provided by the utility model comprises:

[0007] Sealed shell, the sealed shell forms installation cavity inside, and its tail and side wall are respectively provided with air inlet hole and air outlet hole;

[0008] Anti-interference module, the anti-interference module is arranged in the installation cavity;

[0009] Heat dissipation mechanism, heat dissipation mechanism includes air inlet fan arranged in the air inlet hole, for driving external air to enter installation cavity; and

[0010] Electrostatic adsorption assembly, the electrostatic adsorption assembly is arranged on the air inlet path of the air inlet fan, for adsorbing dust in airflow to prevent it from entering the installation cavity.

[0011] In a possible implementation, the electrostatic adsorption assembly comprises:

[0012] Positive electrostatic metal mesh;

[0013] a negative electrostatic metal mesh arranged in parallel with the positive electrostatic metal mesh, and

[0014] an electrostatic generator set arranged in the mounting cavity and electrically connected with the positive electrostatic metal mesh and the negative electrostatic metal mesh.

[0015] In a possible implementation, the electrostatic adsorption assembly further comprises a mounting frame, the mounting frame comprising a first mounting plate and a second mounting plate for fixing two ends of the positive electrostatic metal mesh and the negative electrostatic metal mesh respectively, and the mounting frame being detachably mounted into the mounting cavity.

[0016] In a possible implementation, the mounting frame has a detachable dust collection groove arranged between the positive electrostatic metal mesh and the negative electrostatic metal mesh.

[0017] In a possible implementation, the anti-interference module comprises a multi-band antenna array unit, an anti-interference filter unit and a signal demodulation unit.

[0018] The technical scheme of the utility model forms a directional air circulation channel by arranging an air inlet hole at the tail of the sealed shell and arranging an air outlet hole on the side wall. A fan is embedded in the inner side of the air inlet hole to ensure directional flow of air between the air inlet hole and the air outlet hole, so that cold air can be directly guided to the high-temperature area, while hot air is quickly discharged through the air outlet hole, thereby effectively maintaining the stability of the internal temperature of the equipment. In the air inlet path at the front end of the air inlet fan, an electrostatic adsorption assembly composed of a positive electrostatic metal mesh, a negative electrostatic metal mesh and an electrostatic generator is integrated, which can ionize dust particles in the air flow under the action of a strong electric field and effectively adsorb them to the surface of the negative electrostatic metal mesh, thereby realizing efficient dust removal function and further ensuring stable operation of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed in the embodiment or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can obtain other drawings according to the structures shown in these drawings without creating any creative labor.

[0020] Fig. 1 It is a front structure schematic view of the embodiment of the utility model;

[0021] Fig. 2 It is a back structure schematic view of the embodiment of the utility model;

[0022] Fig. 3It is an internal structure schematic view of the embodiment of the utility model.

[0023] Explanation of reference numerals:

[0024] 1, sealed shell;11, air inlet hole;12, air outlet hole;13, mounting cavity;2, anti-interference module;3, heat dissipation mechanism;31, air inlet fan;4, electrostatic adsorption assembly;41, positive electrostatic metal mesh;42, negative electrostatic metal mesh;43, static generator group;44, mounting frame;441, first mounting plate;442, second mounting plate;5, dust collecting groove.

[0025] The realization, functional features and advantages of the utility model will be further explained in combination with embodiments and with reference to the drawings. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the application more clear and understandable, the application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the application and not to limit the application.

[0027] In view of the problems in the background art, the utility model provides a kind of high-precision anti-interference device, comprising:

[0028] Sealed shell 1, the mounting cavity 13 is formed inside the sealed shell 1, and its tail and side wall are provided with air inlet hole 11 and air outlet hole 12 respectively;

[0029] Anti-interference module 2, the anti-interference module 2 is arranged in the mounting cavity 13;

[0030] Heat dissipation mechanism 3, heat dissipation mechanism 3 includes air inlet fan 31 arranged in the air inlet hole 11, for driving external air to enter mounting cavity 13;And

[0031] Electrostatic adsorption assembly 4, the electrostatic adsorption assembly 4 is arranged on the air inlet path of the air inlet fan 31, for adsorbing dust in airflow to prevent it from entering the mounting cavity 13.

[0032] Refer to Figs. 1 to 3 As shown in the figure, in the embodiment, device main body is composed of sealed shell 1, anti-interference module 2, heat dissipation mechanism 3 and electrostatic adsorption assembly 4, wherein, sealed shell 1 adopts split type metal frame and engineering plastic composite structure, its inside forms airtight mounting cavity 13, shell tail is provided with circular air inlet hole 11, side wall is arranged with strip air outlet hole 12, respectively as air inlet hole 11 and air outlet hole 12, to form directional airflow circulation channel.Anti-interference module 2 is fixed in the central region of mounting cavity 13, is composed of multilayer PCB substrate stack, ring isolation groove is arranged on the periphery of module, and the groove is filled with silica gel damping material, to attenuate the influence of mechanical vibration on circuit.

[0033] In view of the insufficient heat dissipation efficiency, the high temperature affects the performance of the elements of the internal module. The application adopts a forced air cooling structure, including an air inlet fan 31 and an air flow guide structure (not shown). The air inlet fan 31 is selected as a brushless DC fan, which is embedded in the inside of the air inlet hole 11 at the tail of the shell. The inner wall of the installation cavity 13 is provided with an array of flow guide fins, which are arranged at an inclination angle of 30° along the air flow direction, so as to guide the cold air sucked to the surface of the heat generating elements (such as power amplifiers, FPGA chips) of the anti-interference module 2, and form local turbulent flow to improve the heat exchange efficiency. An axial flow type auxiliary exhaust fan can also be installed on the inside of the exhaust hole 12 to cooperate with the air inlet fan 31 to improve the air exchange rate in the cavity.

[0034] In addition, considering that dust and conductive dust may exist in the air, these particulate matters enter the device during the air guide process, which may cause serious damage to the internal circuit, even cause short circuit or high frequency signal reflection, and further affect the service life and stability of the anti-interference module 2. The embodiment is additionally provided with an electrostatic adsorption assembly 4, which is integrated in the front air inlet path of the air inlet fan 31. By generating an electrostatic field in the air flow, dust and conductive dust in the air flow can be effectively adsorbed, so as to prevent them from entering the installation cavity 13. The electrostatic adsorption assembly 4 can interact with the dust in the air flow to capture and adsorb it to the surface of the assembly, so that the potential pollutants can be removed before the air enters the inside of the device, and the cleanliness and long-term stability of the internal module are ensured.

[0035] In a possible implementation, the electrostatic adsorption assembly 4 includes:

[0036] a positive electrostatic metal mesh 41;

[0037] a negative electrostatic metal mesh 42, which is arranged in parallel with the positive electrostatic metal mesh 41, and

[0038] a static generator group 43, which is arranged in the installation cavity 13 and is electrically connected with the positive electrostatic metal mesh 41 and the negative electrostatic metal mesh 42.

[0039] Reference Fig. 3As shown, in this embodiment, the electrostatic adsorption assembly 4 adopts a bipolar metal mesh electric field coupling design, forming a high-efficiency directional ionization-adsorption system composed of a positive electrostatic metal mesh 41, a negative electrostatic metal mesh 42, and an electrostatic generator. The positive and negative metal meshes are installed in parallel with a spacing of 8-12 mm in front of the air inlet fan 31. The positive metal mesh is woven into an 80-mesh honeycomb structure from 304 stainless steel and coated with a layer of graphene conductive layer on its surface; the negative metal mesh uses a corrugated titanium alloy plate with a titanium oxide insulating layer formed on its surface by anodic oxidation treatment. Both are connected to the positive and negative output terminals of the electrostatic generator, with adjustable working voltage ranging from 8-12 kV. When external air flows through the double metal mesh, dust particles in the airflow are ionized under the action of a strong electric field and effectively adsorbed onto the surface of the negative metal mesh, thereby achieving efficient dust removal. At the same time, the electrostatic generator is built into the shielding bin in the corner of the installation cavity 13, with its power supply circuit bypassing the magnetic ring filter, and the output terminal connected in series with a transient voltage suppression diode, greatly reducing the interference and coupling effects of high-voltage pulses on sensitive circuits, ensuring the stability and reliability of the system.

[0040] In one possible implementation, the electrostatic adsorption assembly 4 further includes a mounting frame 44 comprising a first mounting plate 441 and a second mounting plate 442 for fixing the two ends of the positive electrostatic metal mesh 41 and the negative electrostatic metal mesh 42, respectively, and the mounting frame 44 is detachably mounted into the installation cavity 13.

[0041] Referring to Fig. 3 As shown, in this embodiment, the mounting frame 44 of the electrostatic adsorption assembly 4 adopts a modular and detachable design, consisting of a first mounting plate 441 and a second mounting plate 442, both of which are injection molded from engineering plastic with a card slot matching the size of the metal mesh inside. The top end of the positive electrostatic metal mesh 41 is inserted into the dovetail slot of the first mounting plate 441, and the bottom end is locked by a spring clip; the bottom end of the negative electrostatic metal mesh 42 is inserted into the T-shaped slide rail of the second mounting plate 442, and the top end is fixed by a knob with self-locking function. The mounting frame 44 is connected to the inner wall of the sealed housing 1 on both sides through the slide rail, and the end of the slide rail is provided with a limiting buckle, which supports the hand-pressed unlocking and pulling out for disassembly along the guide rail.

[0042] In one possible implementation, the bottom of the mounting frame 44 has a detachable dust collection tank 5 between the positive electrostatic metal mesh 41 and the negative electrostatic metal mesh 42. Specifically, the bottom of the mounting frame 44 is provided with a detachable dust collection tank 5 made of aluminum alloy extrusion, which spans the ionization zone between the positive electrostatic metal mesh 41 and the negative electrostatic metal mesh 42 and is clamped to the bottom wall of the sealed housing through the slide rails on both sides. The adsorbed charged dust falls into the tank under the action of gravity to form a non-adhesive accumulation, thereby facilitating subsequent cleaning.

[0043] In a possible implementation, the anti-interference module 2 comprises a multi-band antenna array unit, an anti-interference filter unit and a signal demodulation unit. The multi-band antenna array module is used to receive multi-system multi-band satellite navigation signals, the anti-interference filter unit processes the received signals to filter out interference signals, and ensures that the system only receives effective satellite navigation signals, thereby improving the signal quality and reliability of the system. The signal demodulation unit is responsible for extracting effective information from the filtered signals, and after demodulation, navigation data that can be used for subsequent processing and positioning calculation is formed.

[0044] The same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components; in the description of the present application, it should be understood that if the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right" and the like are based on the orientations or positional relationships shown in the drawings, they are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationship in the drawings are only used for exemplary illustration, and cannot be understood as a limitation on the present patent, for those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0045] The above is only a preferred embodiment of the present application, and is not intended to limit the present application, any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A high-precision anti-interference device, characterized in that, The application relates to an anti-interference module and a sealing shell. The sealing shell is internally provided with a mounting cavity, and the tail and the side wall are respectively provided with air inlet holes and air outlet holes. The anti-interference module is arranged in the mounting cavity. The heat dissipation mechanism comprises an air inlet fan arranged in the air inlet hole and used for driving external air into the mounting cavity. The electrostatic adsorption assembly is arranged in the air inlet path of the air inlet fan and used for adsorbing dust in the air flow to prevent the dust from entering the mounting cavity.

2. The high-precision anti-interference device according to claim 1, characterized in that, The electrostatic adsorption assembly comprises a positive electrostatic metal net, a negative electrostatic metal net arranged in parallel with the positive electrostatic metal net, and an electrostatic generator group arranged in the mounting cavity and electrically connected with the positive electrostatic metal net and the negative electrostatic metal net. The electrostatic adsorption assembly further comprises a mounting frame comprising a first mounting plate and a second mounting plate used for fixing two ends of the positive electrostatic metal net and the negative electrostatic metal net respectively, and the mounting frame can be detachably mounted into the mounting cavity. The bottom of the mounting frame is provided with a detachable dust collection groove arranged between the positive electrostatic metal net and the negative electrostatic metal net. The anti-interference module comprises a multi-band antenna array unit, an anti-interference filter unit and a signal demodulation unit.

3. The high-precision anti-interference device according to claim 2, characterized in that, ​ 4. The high precision anti-interference device according to claim 3, characterized in that, ​ 5. The high-precision anti-interference device according to any one of claims 1 to 4, characterized in that, ​

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