An anti-interference device and electronic device

Abstract

This disclosure provides an anti-interference device and an electronic device. The anti-interference device includes: a device housing, a printed circuit board, an anti-interference component, and a plug-and-play connector. The anti-interference component is a passive anti-interference component. The printed circuit board and the anti-interference component are disposed within the device housing. The anti-interference component is disposed on the printed circuit board. The anti-interference component is connected to the connector. The anti-interference device is connected to a target device via the connector, and the anti-interference device is used to filter the signal input to the target device. The target device is the device to be anti-interferenced. This embodiment adopts a plug-in design, is plug-and-play, and has high anti-interference capability and strong compatibility.

Description

Technical Field

[0001] This disclosure relates to the field of anti-interference technology, and in particular to an anti-interference device and electronic device. Background Technology

[0002] In wired telephone communication, electromagnetic shielding and physical layer anti-interference technology, digital signal processing (DSP) and coding technology, and fiber optic communication alternative technology are often used to improve the anti-interference capability of voice communication. However, the anti-interference technology in wired telephone communication is not ideal, or it is complicated to set up and maintain and has poor compatibility. Utility Model Content

[0003] This disclosure provides an anti-interference device and an electronic device.

[0004] In a first aspect, embodiments of this disclosure provide an anti-interference device, wherein the anti-interference device includes: a device housing, a printed circuit board, an anti-interference component, and a plug-and-play connector; the anti-interference component is a passive anti-interference component; the printed circuit board and the anti-interference component are disposed within the device housing;

[0005] The anti-interference component is disposed on the printed circuit board;

[0006] The anti-interference component is connected to the connector;

[0007] The anti-interference device is connected to the target device through the connector, and the anti-interference device is used to filter the signal input to the target device; the target device is the device to be anti-interferenced.

[0008] Secondly, embodiments of this disclosure provide an electronic device, including the aforementioned anti-interference device.

[0009] The anti-interference device of this embodiment includes: a device housing, a printed circuit board, an anti-interference component, and a plug-and-play connector; the anti-interference component is a passive anti-interference component; the printed circuit board and the anti-interference component are disposed inside the device housing; the anti-interference component is disposed on the printed circuit board; the anti-interference component is connected to the connector; the anti-interference device is connected to the target device through the connector, and the anti-interference device is used to filter the signal input to the target device; the target device is the device to be anti-interference. This embodiment adopts a plug-in design, is plug-and-play, and has efficient anti-interference capability and strong compatibility. Attached Figure Description

[0010] In the accompanying drawings of the embodiments disclosed herein:

[0011] Figure 1 This is a schematic diagram of the structure of the anti-interference device provided in the embodiments of this disclosure;

[0012] Figure 2 This is a schematic diagram of the anti-interference device structure provided in an embodiment of the present disclosure;

[0013] Figure 3 This is a schematic diagram of the PCB board structure of the anti-interference device provided in the embodiments of this disclosure;

[0014] Figure 4 A schematic diagram of a common-mode suppression element provided in an embodiment of this disclosure;

[0015] Figure 5 A schematic diagram of an anti-interference device including a transient energy suppression component provided in an embodiment of this disclosure;

[0016] Figure 6 A schematic diagram of the structure of the anti-interference device provided in the embodiments of this disclosure, including a common-mode suppression element and a TVS;

[0017] Figure 7 This is a schematic diagram illustrating the composition of an electronic device provided in an embodiment of this disclosure. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solutions of this disclosure, the communication-sensing data processing method and computer-readable storage medium provided in the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings.

[0019] The present disclosure will be described more fully below with reference to the accompanying drawings; however, the embodiments shown may be embodied in different forms, and the present disclosure should not be construed as limited to the embodiments set forth below. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will enable those skilled in the art to fully understand the scope of the disclosure.

[0020] The accompanying drawings of the embodiments disclosed herein are provided to further illustrate the embodiments of this disclosure and form part of the specification. They are used together with the detailed embodiments to explain this disclosure and do not constitute a limitation thereof. The above and other features and advantages will become more apparent to those skilled in the art from the description of the detailed embodiments with reference to the accompanying drawings.

[0021] This disclosure may be described with reference to plan and / or cross-sectional views using the ideal schematic diagrams of this disclosure. Therefore, the example illustrations may be modified according to manufacturing techniques and / or tolerances.

[0022] Where there is no conflict, the various embodiments of this disclosure and the features thereof in the embodiments may be combined with each other.

[0023] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the disclosure. The term "and / or" as used in this disclosure includes any and all combinations of one or more of the associated enumerated entries. The singular forms "a" and "the" as used in this disclosure are also intended to include the plural forms, unless the context clearly indicates otherwise. The terms "comprising," "made of," etc., as used in this disclosure specify the presence of the stated feature, integral, step, operation, element, and / or component, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof.

[0024] Unless otherwise specified, all terms used in this disclosure (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art. It will also be understood that terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and this disclosure, and will not be interpreted as having an idealized or overly formal meaning, unless expressly so defined in this disclosure.

[0025] The anti-interference device of this embodiment includes: a device housing, a printed circuit board, an anti-interference component, and a plug-and-play connector; the anti-interference component is a passive anti-interference component; the printed circuit board and the anti-interference component are disposed inside the device housing; the anti-interference component is disposed on the printed circuit board; the anti-interference component is connected to the connector; the anti-interference device is connected to the target device through the connector, and the anti-interference device is used to filter the signal input to the target device; the target device is the device to be anti-interference. This embodiment adopts a plug-in design, is plug-and-play, and has efficient anti-interference capability and strong compatibility.

[0026] The solutions disclosed herein can be applied to, but are not limited to: 1. Scenarios where voice lines and power cables are mixed in industrial sites, such as PLC (Programmable Logic Controller) control cabinets, power distribution stations, etc., and are applicable to scenarios where wired telephone lines are laid out in any complex wiring environment, including but not limited to power plants, steel plants, substations, large power-consuming factories, etc.; 2. Anti-interference upgrades for voice systems in old buildings, including the original telephone lines and lighting circuits sharing the same cable trays, which have 50Hz power frequency interference and crosstalk in the broadcast frequency band (such as 88-108MHz for FM radios), to avoid downtime losses caused by line modifications.

[0027] This disclosed embodiment supports traditional POTS (Plain Old Telephone Service) and PSTN (Public Switched Telephone Network) telephone networks (analog signal, frequency band 300Hz-3.4kHz). Compatible cable types include, but are not limited to: twisted pair (UTP / FTP), coaxial cable (RG58 / RG59), with a wire diameter of 0.4-0.8mm. When coexisting with industrial Ethernet (such as Profilnet, EtherCAT), the device's shielding effectiveness must meet the EN 55032 Class B standard to avoid secondary interference to industrial communications. An independent grounding stake (grounding resistance ≤4Ω) can be provided in the deployment area of ​​the anti-interference device to ensure the shielding effectiveness of the enclosure. Grounding is not mandatory for this anti-interference device. For example, in home use, the anti-interference device can be placed inside an information box without grounding, and the effect will not be affected (homes have lightning protection designs). Grounding is used in engineering applications to prevent high-energy EMC interference.

[0028] The embodiments of this disclosure will be described in detail below.

[0029] This disclosure provides an anti-interference device 1, such as... Figure 1 , Figure 2 As shown, it includes: a printed circuit board 11, an anti-interference component 12, a plug-and-play connector 13, and a device housing 15; the anti-interference component 12 is a passive anti-interference component; the printed circuit board 11 and the anti-interference component 12 are disposed inside the device housing 15;

[0030] The anti-interference component 12 is disposed on the printed circuit board 11;

[0031] The anti-interference component 12 is connected to the connector 13;

[0032] The anti-interference device 1 is connected to the target device 2 via the connector 13. The anti-interference device 1 is used to filter the signal input to the target device 2. The target device 2 is the device to be anti-interferenced.

[0033] In this embodiment, the anti-interference device 1 can be a small, lightweight, integrated voice communication anti-interference device. It can adopt a plug-in passive design, is plug-and-play, and has efficient electromagnetic signal anti-interference capabilities and strong compatibility. It can also suppress interference with high-frequency signals and transmit signals over long distances without causing voice transmission delays. Since there is no need to replace the original wiring, users can save a lot of equipment and construction costs. It is also easy to maintain, convenient for daily maintenance and troubleshooting, and has high cost-effectiveness.

[0034] In this embodiment of the disclosure, the device is plug-and-play, has good compatibility, and can be directly connected in series to the voice communication line without modifying the original line.

[0035] In this embodiment of the disclosure, the target device 2 may include, but is not limited to, a communication device, such as a landline telephone.

[0036] In this embodiment of the disclosure, for the extreme environment of industrial hybrid cabling, no external power supply is required, and it operates by relying on the energy of the line signal itself, which can reduce energy consumption and failure rate, and achieve a balance between miniaturization and high reliability.

[0037] In this embodiment, the printed circuit board 11 can be a customized printed circuit board, or a multilayer circuit board, such as a two-layer or four-layer board design, using a hybrid layout of microstrip lines and striplines to reduce high-frequency crosstalk. Each layer can use a different layout, with each board employing a different layout method.

[0038] In this embodiment of the disclosure, the connector 13 may include a signal input port A and a signal output port B;

[0039] The anti-interference component 12 is connected between the signal input port A and the signal output port B via traces on the printed circuit board 11.

[0040] In this embodiment of the present disclosure, the anti-interference component 12 is connected to the output device 3 of the signal to be filtered through the signal input port A of the connector 13, and the anti-interference component 12 is connected to the target device 2 receiving the signal through the signal output port B of the connector 13.

[0041] In this embodiment, the connector 13 can select the corresponding type of output port according to the different interfaces of the target device 2, and select the corresponding type of input port according to the different interfaces of the output device 3. The specific implementation of the connector 13 is not limited here.

[0042] In this embodiment of the disclosure, for example, when the application environment is to eliminate electromagnetic interference for individual fixed-line devices, an RJ11 (telephone line) interface can be selected to achieve an RJ11-RJ11 connection. When the application environment is to eliminate electromagnetic interference for voice aggregation and switching equipment, a DB50 (serial port) interface can be selected to achieve a DB50-DB50 connection.

[0043] In this embodiment of the disclosure, the connector 13 can support interface conversion to be compatible with various interference shielding scenarios and complete the conversion between various interfaces.

[0044] In this embodiment, for example, connector 13 can also support dual-mode interfaces such as RJ11 and RJ45 (Ethernet), and is compatible with traditional analog telephones. It can also be compatible with DB50 to RJ11, RJ11 to DB50, etc., which will not be listed here.

[0045] In this embodiment of the disclosure, the plug-in 13 may also be a connector with a built-in metal shield, which is grounded to the outer shell through a spring to block electromagnetic leakage at the interface.

[0046] In the embodiments disclosed herein, such as Figure 2 , Figure 3 As shown, the traces 111 on the printed circuit board 11 are differential pairs; and,

[0047] The components of the anti-interference component 12 are connected by differential lines.

[0048] In this embodiment of the disclosure, the anti-interference component 12 is connected to the signal input port A and the signal output port B via differential line pairs.

[0049] In this embodiment of the disclosure, the user telephone line uses two wires, ab and b, to transmit signals. Therefore, the anti-interference component 12 can be connected to the signal input port A and the signal output port B through a differential pair.

[0050] In this embodiment of the disclosure, differential pair traces are used, and the trace spacing and trace width can be designed according to impedance matching requirements (such as 100Ω differential impedance) to reduce common-mode noise coupling.

[0051] In this embodiment of the disclosure, the anti-interference connection routing layout optimizes the signal path to reduce crosstalk and enables precise filtering of interference noise signals (such as high-energy electromagnetic noise caused by mixed industrial power lines).

[0052] In this embodiment of the disclosure, the distance between any two differential line pairs can be greater than or equal to 5 times the line width, where the line width refers to the conductor width of the positive differential line or the negative differential line in the differential line pair (the conductor widths of the positive differential line and the negative differential line are usually the same).

[0053] In this embodiment of the disclosure, the length difference between the positive and negative difference lines in the difference line pair is less than 5 mils.

[0054] In this embodiment of the disclosure, by setting the distance and length between differential line pairs, the anti-interference effect can be further improved, and interference noise signals can be filtered more accurately.

[0055] In this embodiment of the disclosure, to ensure the reliability of the device, the anti-interference device of this embodiment can realize anti-interference (against external interference) + filtering (against noise on the signal). Specifically, the anti-interference component 12 can realize high-frequency wave and / or low-frequency filtering.

[0056] In this embodiment of the disclosure, the anti-interference component 12 may be composed of one or more EMI (Electromagnetic Interference) filter devices (or filter components), and the cutoff frequency of the EMI filter device may meet the requirements of 1MHz (megahertz)-1GHz (gigahertz).

[0057] In this embodiment of the disclosure, the anti-interference component 12 may include: a filtering component; the filtering component includes a high-frequency filtering component; the high-frequency filtering component is used to filter signals with frequencies greater than a preset frequency threshold.

[0058] In this embodiment of the disclosure, the filtering component may further include a low-frequency filtering component; the low-frequency filtering component is used to filter signals with frequencies less than or equal to a preset frequency threshold.

[0059] In this embodiment, the EMI filtering devices may include, but are not limited to, LC (inductor-capacitor) combined filtering, π-type combined filtering, common-mode rejection components, ferrite beads, electrolytic capacitors, power inductors, and RC (resistor-capacitor) combined filtering. High-frequency filtering components may include, but are not limited to, the following EMI filtering devices: LC combined filtering elements, π-type combined filtering elements, common-mode rejection components, and ferrite beads. Low-frequency filtering components may include, but are not limited to, the following EMI filtering devices: electrolytic capacitors, power inductors, and RC combined filtering.

[0060] In the embodiments disclosed herein, such as Figure 4 As shown, the anti-interference component 12 may include a high-frequency filtering component. For example, the high-frequency filtering component may include a common-mode inductor (CM Choke). The common-mode inductor is used to suppress external interference on the signal line and can suppress low-frequency noise (such as 50Hz power frequency interference). For example, the common-mode rejection ratio (CMRR) is ≥50dB@1kHz.

[0061] In this embodiment of the disclosure, for example, the common-mode inductor (CM Choke) can be connected to the output device 3 of the signal to be filtered via the signal input port A of connector 13, and the common-mode inductor (CM Choke) can be connected to the target device 2 via the signal output port B of connector 13, such as... Figure 4 As shown.

[0062] In this embodiment of the disclosure, the high-frequency filtering component may include at least one common-mode inductor or at least one magnetic isolation device (such as Analog Devices' iCoupler technology, which is a transformer-based isolation technology), which can achieve the purpose of blocking the common-mode noise conduction path of industrial power lines.

[0063] In this embodiment of the disclosure, the common-mode inductor can appear in pairs, for example, there can be two common-mode inductors. Alternatively, the common-mode inductor can appear singly, and a single common-mode inductor can act on a pair of signal lines.

[0064] In the embodiments of this disclosure, the common-mode suppression element can achieve filtering and common-mode suppression. When signal lines or power lines are used in pairs (e.g., two lines), the use of the common-mode suppression element can filter out common-mode noise, i.e., common-mode suppression.

[0065] In this embodiment of the disclosure, the common-mode suppression element can be a high-inductance anti-interference device, and the inductance of the common-mode suppression element can satisfy: inductance ≥ 1mH (millhenry).

[0066] In this embodiment of the disclosure, the distance between multiple common-mode inductors can be greater than 1 cm, thereby avoiding mutual interference between each common-mode inductor.

[0067] In this embodiment of the disclosure, the anti-interference component 12 may further include a passive LC filter network for attenuating high-frequency interference (frequency > 1 MHz, for example, a line with an insertion loss value ≥ 40 dB @ 10 MHz).

[0068] In this embodiment of the disclosure, the anti-interference component 12 can dynamically suppress noise signal transmission, ensure the integrity of voice signals, and avoid call delays; it supports wideband interference suppression (supports 1MHz to 1GHz frequency band) and long-distance signal transmission (>100 meters).

[0069] In the embodiments disclosed herein, such as Figure 5 As shown, the anti-interference device may further include: transient energy suppression component 14; the transient energy suppression component 14 is used to shield energy signal interference.

[0070] In this embodiment of the disclosure, the transient energy suppression component 14 can be disposed on the signal input port A side.

[0071] In this embodiment of the disclosure, the transient energy suppression component 14 is connected between the signal input port of the connector 13 and the filtering component; or, it is connected between the filtering component and the signal output port of the connector 13.

[0072] In this embodiment of the disclosure, the transient energy suppression component 14 also achieves anti-interference, can protect a single signal line, and can protect against high-energy interference such as surges.

[0073] In this embodiment of the disclosure, the transient energy suppression component 14 may include, but is not limited to, a TVS (transient voltage suppressor) element and / or a varistor, for transient protection.

[0074] In this embodiment of the disclosure, when the transient energy suppression component 14 includes a TVS element, it may include at least one TVS element;

[0075] In the case where at least one TVS element is multiple TVS elements, the multiple TVS elements are connected in parallel.

[0076] In this embodiment of the disclosure, the transient energy suppression component 14 can be implemented by connecting two TVS elements in parallel.

[0077] In the embodiments disclosed herein, such as Figure 6 The diagram shows the internal anti-interference devices, primarily consisting of a common-mode rejection element (CM Choke) and a TVS. The CM Choke comprises two parallel common-mode inductors, positioned between signal input port A and signal output port B. Each differential line pair uses only one common-mode inductor connected in series. To further protect against transient high-energy interference such as electrostatic discharge, two TVSs are connected in parallel on each input line to suppress such interference.

[0078] In this embodiment of the disclosure, high-frequency and low-frequency noise and interference are coupled to the signal line from the outside. Common-mode inductors, ferrite beads, TVS and other filtering methods are used to filter different types of noise. That is, the anti-interference components of the solution in this embodiment of the disclosure are used to suppress external interference signals received by the signal line, that is, to suppress external interference signals received by the signal line of the input target device.

[0079] In this embodiment of the disclosure, the anti-interference device may further include: a signal compensation module: the signal compensation module may include, but is not limited to, an impedance matching circuit (e.g., 75Ω / 100Ω switchable) to adapt to different cable characteristic impedances and reduce signal attenuation over long distances (>100m).

[0080] In this embodiment of the disclosure, the device housing 15 may include a shell and an inner liner; the inner liner is disposed inside the shell;

[0081] The housing may be made of aluminum alloy; and / or the lining may be made of conductive foam.

[0082] In this embodiment, the housing may be an aluminum alloy CNC-formed shell (CNC forming is a process of forming a workpiece using a computer numerical control machine tool), and the housing design may include, but is not limited to, a snap-fit ​​structure to support quick disassembly and maintenance. In other embodiments, the housing design may also employ a threaded connection.

[0083] In this embodiment, the liner may be made of conductive foam, with an overall shielding effectiveness of ≥60dB (frequency range 10MHz-2GHz).

[0084] In the embodiments disclosed herein, the industrial-grade shielding shell, combined with a metal plating and grounding design, can effectively block external electromagnetic interference.

[0085] In this embodiment of the disclosure, the anti-interference device can be a miniature embeddable module.

[0086] In this embodiment of the disclosure, SiP (System-in-Package) technology can be used to integrate the corresponding devices in the anti-interference device into a micro module, thereby enabling the anti-interference device to be directly embedded in or connected to the existing target device.

[0087] In this embodiment, the device combines hardware integration innovation with passive filtering technology, and the integrated design improves product compatibility, eliminates the need for line replacement and complex construction, saves equipment deployment and maintenance costs, and achieves a balance between voice communication anti-interference capability and deployment economy. It is especially suitable for industrial scenarios with complex electromagnetic environments and provides a standardized solution for low-cost anti-interference transformation of voice systems.

[0088] This disclosure embodiment includes at least the following advantages:

[0089] 1. High-efficiency electromagnetic interference resistance (core advantage)

[0090] Technical Benefits: By employing high-inductance anti-interference components (such as common-mode inductors) and customized PCB layout, precise suppression of high-frequency interference (e.g., 1MHz-1 GHz) is achieved (insertion loss ≥40dB@10MHz). Especially in industrial high-voltage mixed wiring scenarios, it can eliminate interference from high-energy electromagnetic noise (such as inverter harmonics and surge pulses) on voice signals. Directly addressing the core pain point in voice communication—noise pollution—and ensuring call clarity is the core value of this device.

[0091] 2. Plug-and-play deployment with zero line modification (cost and efficiency advantages)

[0092] Technical Benefits: Utilizing a plug-in design (e.g., RJ11 / RJ45 / DB50 interfaces), it supports cascading connection to existing voice lines without requiring cable replacement or network architecture modifications, saving over 90% of construction costs. It can be installed at any node between the voice switching equipment and user phones, enabling simultaneous noise filtering for multiple user lines. This lowered deployment threshold, making it suitable for rapid retrofitting of older facilities and industrial sites, is a key driving factor for users choosing this equipment.

[0093] 3. Passive design and low maintenance costs (long-term economic efficiency)

[0094] Technical benefits: It requires no external power supply, operates on its own signal energy, has no active components (such as integrated circuit IC chips), has an extremely low failure rate, and supports modular maintenance (such as replacing filters individually); it reduces energy consumption and operation and maintenance investment, avoids downtime losses due to equipment failure in industrial scenarios, and improves the cost-effectiveness of the entire life cycle.

[0095] 4. Small size, lightweight design, and wide compatibility (advantage for adapting to various scenarios)

[0096] Technical effect: Device volume <0.005m³ 3 Weighing less than 1kg, it is suitable for installation in confined spaces (such as power distribution cabinets and cable trays); it is compatible with various voice systems including analog telephones and VoIP (Voice over Internet Protocol). It also features anti-static and surge protection designs, allowing it to be installed in high-voltage industrial environments without being damaged by static electricity or surges. It overcomes the limitations of traditional anti-interference devices, which are bulky and restricted in their application scenarios, meeting the flexible deployment needs in complex environments.

[0097] 5. Zero-latency voice transmission (guaranteeing user experience)

[0098] Technical benefits: Employing a direct-through signal processing architecture, voice transmission latency is <0.8ms (far below the human perception threshold of 20ms), avoiding call stuttering or interruptions. In scenarios with high real-time requirements (such as industrial dispatching and emergency command), it ensures smooth calls and improves user experience.

[0099] 6. Balancing high-frequency suppression and long-distance transmission (technological breakthrough)

[0100] Technical benefits: Through impedance matching circuitry and segmented shielding design, it supports stable transmission of voice signals over a distance of 120 meters (0.5mm diameter twisted pair cable) while suppressing GHz-level high-frequency interference. This resolves the technical contradiction between "high-frequency suppression" and "long-distance transmission" in traditional solutions, expanding the device's application range.

[0101] This disclosure also provides an electronic device 4, such as... Figure 7 As shown, it includes the aforementioned anti-interference device 1.

[0102] In the embodiments disclosed herein, any of the aforementioned anti-interference devices 1 are applicable to the embodiments of the electronic device 4, and will not be described in detail here.

[0103] This disclosure has disclosed exemplary embodiments, and although specific terminology has been used, it is for general illustrative purposes only and should not be construed as limiting. In some instances, it will be apparent to those skilled in the art that features, characteristics, and / or elements described in conjunction with particular embodiments may be used alone, or in combination with features, characteristics, and / or elements described in conjunction with other embodiments, unless otherwise expressly indicated. Therefore, those skilled in the art will understand that various changes in form and detail may be made without departing from the scope of this disclosure as set forth by the appended claims.

Claims

1. An interference rejection device, wherein, The anti-interference device includes: a device housing, a printed circuit board, an anti-interference component, and a plug-and-play connector; the anti-interference component is a passive anti-interference component; the printed circuit board and the anti-interference component are disposed inside the device housing; The anti-interference component is disposed on the printed circuit board; The anti-interference component is connected to the connector; The anti-interference device is connected to the target device through the connector, and the anti-interference device is used to filter the signal input to the target device; the target device is the device to be anti-interferenced.

2. The anti-jamming device of claim 1, wherein, The connector includes a signal input port and a signal output port; The anti-interference component is connected between the signal input port and the signal output port via traces on the printed circuit board.

3. The anti-interference device according to claim 2, wherein, The traces on the printed circuit board are differential pairs; and... The components of the anti-interference component are connected by the differential lines.

4. The anti-interference device according to claim 3, wherein, The distance between any two differential pairs is greater than or equal to 5 times the line width; the line width refers to the conductor width of the positive differential line in the differential pair; and / or, The length difference between the positive and negative difference lines in the difference line pair is less than 5 mils.

5. The tamper-resistant device of claim 1, wherein, The anti-interference component includes a filtering component; the filtering component includes a high-frequency filtering component; the high-frequency filtering component is used to filter signals with frequencies greater than a preset frequency threshold.

6. The tamper-resistant device of claim 5, wherein, The filtering component includes a low-frequency filtering component; the low-frequency filtering component is used to filter signals with frequencies less than or equal to the preset frequency threshold.

7. The tamper-resistant device of claim 5, wherein, The high-frequency filtering component includes a common-mode inductor or at least a pair of ferrite beads.

8. The anti-interference device according to claim 7, wherein, The distance between any two of the plurality of common-mode inductors is greater than 1 cm; and / or, The inductance of each common-mode inductor is greater than or equal to 1 millihenry.

9. The tamper-resistant device of claim 5, wherein, The anti-interference component further includes: a transient energy suppression component; the transient energy suppression component is used to shield energy signal interference; The transient energy suppression component is connected between the signal input port of the connector and the filtering component; or, it is connected between the filtering component and the signal output port of the connector.

10. The tamper-resistant device of claim 9, wherein, The transient energy suppression component includes: at least one transient voltage suppression diode (TVS) element; In the case where at least one of the TVS elements is a plurality of TVS elements, the plurality of TVS elements are connected in parallel.

11. The tamper-resistant device of claim 1, wherein, The equipment housing includes a shell and an inner liner; the inner liner is disposed inside the shell; The housing is made of aluminum alloy; and / or the lining is made of conductive foam.

12. The tamper-resistant device of claim 1, wherein, The anti-interference device is a miniature, embeddable device; The miniature embedded device is connected to the input port of the target device via a connector.

13. An electronic device, wherein, Includes the anti-interference device as described in any one of claims 1-12.

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