An electromagnetic interference resistant device using isolated ground handling

Abstract

This invention belongs to the field of electromagnetic interference (EMI) suppression technology, and proposes an EMI suppression device using isolated grounding. It includes shielded modules that act as interference sources or receivers for each other, and a shielded transmission circuit for signal transmission. The shielded modules include camera mechanisms, modules that easily generate high-frequency signals, and modules that easily generate large currents. The shielded transmission circuit includes transmission cables connecting each shielded module. This device is simple, easy to implement, and easy to operate. It mainly utilizes the conductivity of metallic materials to transmit external electromagnetic interference, which is easily received by the shielded modules and the transmission circuit cables, to the ground through a conductive layer. Simultaneously, the transmitted circuit signals are also protected, thus preventing electromagnetic interference to the shielded modules and the transmission circuit cables, allowing the equipment to maintain normal operation.

Description

Technical Field

[0001] This utility model belongs to the field of electromagnetic interference protection technology, and specifically relates to an electromagnetic interference protection device using isolation grounding treatment. Background Technology

[0002] Electromagnetic interference is a crucial issue that must be considered during the design and use of optoelectronic equipment. The operating environment of optoelectronic equipment is filled with numerous electromagnetic interference signals, such as high-frequency signals in electronic devices, sudden high currents, and the operation of push-button switches. When these signals generate electromagnetic induction and interference within the equipment, they often affect its normal operation. In mild cases, this can cause instability; in severe cases, it can lead to system crashes or malfunctions, resulting in equipment damage or endangering personal safety.

[0003] Electromagnetic interference (EMI) refers to electrical changes in optoelectronic equipment caused by environmental factors during operation. These changes are unrelated to the useful signal and are detrimental to system performance or signal transmission. These harmful electrical changes can alter the original signal data and even cause malfunctions in the entire device due to abnormal signals.

[0004] Nowadays, optoelectronic devices are becoming increasingly miniaturized and highly integrated, and the requirements for their ability to resist electromagnetic interference are becoming more and more stringent. Therefore, it is particularly important to effectively reduce electromagnetic interference. Summary of the Invention

[0005] To address the aforementioned problems, the purpose of this invention is to propose a simple and effective electromagnetic interference suppression device using isolated grounding, which can effectively reduce the electromagnetic interference that optoelectronic equipment is susceptible to during use. This method is simple and easy to implement, and can be applied to most optoelectronic devices.

[0006] Interference formation comprises three elements: the interference source, the propagation path, and the receiving medium. Different modules within the same optoelectronic device can simultaneously act as both interference sources and receiving mediums for each other, with each module potentially causing varying degrees of interference to the others. The primary propagation path for interference signals in optoelectronic devices is electromagnetic radiation. There are many anti-interference measures; this device primarily utilizes a structure incorporating isolation and grounding.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an anti-electromagnetic interference device using isolation grounding treatment, comprising shielded modules that act as interference sources or receiving carriers to each other, and a shielded transmission circuit that serves as signal transmission; the shielded modules include a camera mechanism, a module that easily generates high-frequency signals, and a module that easily generates large currents; the shielded transmission circuit includes transmission cables connecting each shielded module; the shielded modules are isolated using shielding materials; after being isolated by the shielding materials, the shielded modules are wrapped with a conductive layer, and the conductive layer is grounded through a conductive cable; the shielded transmission circuit is isolated using shielding materials; after being isolated by the shielding materials, the shielded transmission circuit is wrapped with a conductive layer, and the conductive layer is grounded through a conductive cable.

[0008] Furthermore, the shielding material is an insulating layer.

[0009] Furthermore, the conductive layer is copper foil.

[0010] This invention utilizes the conductivity of a conductive layer to transmit electromagnetic interference generated by the modules and transmission cables of the optoelectronic device, as well as external electromagnetic interference that is susceptible to it, to the earth's crust. Simultaneously, the transmitted circuit signals are also protected, thus ensuring that the modules and transmission cables are free from electromagnetic interference and that the device's operation remains unaffected. This invention leverages the conductivity of metallic materials, is simple to implement, and effectively reduces electromagnetic interference that optoelectronic devices are susceptible to during operation. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments, and its structure and advantages will become clearer.

[0013] See Figure 1 An electromagnetic interference suppression device using isolation grounding includes shielded modules 1 that act as interference sources or receivers to each other, and shielded transmission circuits 2 that transmit signals. The shielded modules 1 include a camera module, a module that easily generates high-frequency signals, and a module that easily generates large currents. The shielded transmission circuits 2 include transmission cables connecting each shielded module 1. The shielded modules 1 are isolated using shielding material 3. After being isolated by the shielding material 3, the shielded modules 1 are wrapped with a conductive layer 4, which is grounded via a conductive cable. The shielded transmission circuits 2 are also isolated using shielding material 3. After being isolated by the shielding material 3, the shielded transmission circuits 2 are wrapped with a conductive layer 4, which is grounded via a conductive cable.

[0014] Furthermore, the shielding material 3 is an insulating layer.

[0015] Furthermore, the conductive layer 4 is a copper foil.

[0016] In this invention, the various modules are connected by cables. To eliminate electromagnetic interference between modules and from the outside, shielding material 3 (insulating layer) is used to isolate each module 1 to be shielded, thus isolating electromagnetic leakage and external electromagnetic interference.

[0017] The insulation layer is then wrapped with conductive material to prevent electromagnetic leakage from remaining due to insufficient insulation. At this point, conductive cable 5 is used to ground the conductive layer 4 to conduct any remaining electromagnetic interference and eliminate any electromagnetic interference that may affect the modules.

[0018] Meanwhile, during circuit transmission, it may be subject to electromagnetic interference of varying degrees. Therefore, the cables of the transmission circuit are treated in the same way: first, shielding material 3 (insulation layer) is used for isolation, then conductive material 4 (copper foil) is used for wrapping, and then conductive cable 5 is used to ground the conductive layer 4.

[0019] In practical applications, the camera mechanism and display processing board are used as shielded modules 1. First, insulating materials are used to isolate the camera mechanism and display processing board, and the connecting cables of the camera mechanism and display are also isolated with insulating materials. Then, conductive materials (copper foil) are used to wrap the insulating materials and ground them through ordinary cables. Without this treatment, when electrostatic discharge is applied using an electrostatic gun, the normally displaying monitor will occasionally experience screen flickering or blackouts. After using this method, when electrostatic discharge is applied again, the monitor no longer exhibits these malfunctions.

[0020] This device is simple, easy to implement, and easy to operate. It mainly utilizes the conductivity of metallic materials to transmit external electromagnetic interference, which is easily received by the shielded module 1 and the cable transmitting circuit signals, to the earth's crust through the conductive layer 4. At the same time, the circuit signals transmitted by the device itself are also protected, thus preventing electromagnetic interference to the shielded module 1 and the cable transmitting circuit signals, and enabling the equipment to maintain normal operation.

[0021] Although the present invention has been described in detail above, it is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many modifications under the guidance of the present invention and without departing from its spirit, and all such modifications are within the protection scope of the present invention.

Claims

1. An electromagnetic interference resistant device using isolated ground handling, characterized by: The system includes shielded modules that act as interference sources or receivers for each other, and shielded transmission circuits that transmit signals. The shielded modules include camera mechanisms, modules that easily generate high-frequency signals, and modules that easily generate large currents. The shielded transmission circuits include transmission cables connecting each shielded module. The shielded modules are isolated using shielding materials. After being isolated by the shielding materials, each shielded module is wrapped with a conductive layer, which is grounded via a conductive cable. The shielded transmission circuits are also isolated using shielding materials. After being isolated by the shielding materials, each shielded transmission circuit is wrapped with a conductive layer, which is grounded via a conductive cable.

2. An electromagnetic interference resistant device using isolated ground handling as recited in claim 1, characterized by: The shielding material is an insulating layer.

3. An electromagnetic interference resistant device using isolated ground handling as recited in claim 1, characterized by: The conductive layer is copper foil.

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