Electromagnetic Noise Isolation Method and Device, Storage Medium and Electronic Device

Abstract

An embodiment of the present application provides an electromagnetic noise isolation method, device, storage medium, and electronic device. The electromagnetic noise isolation method includes: obtaining a first level signal output by an electromagnetic noise detection circuit between a first power plane and a second power plane; when the switching device is in a conducting state and the first level signal indicates that at least one of the first power plane and the second power plane generates electromagnetic noise, controlling the switching device to switch from the conducting state to the off state, and performing electromagnetic noise isolation between the first power plane and the second power plane through an electromagnetic noise isolation device. When the switching device is in the conducting state, the first power plane and the second power plane are connected through a first connection path. When the switching device is in the off state, the first connection path is in an open state. Through the embodiment of the present application, the technical problem that electromagnetic noise may cause server failures is solved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of computers, and in particular, to a method and device for electromagnetic noise isolation, a storage medium, and an electronic device. Background Art

[0002] With the development of information technology devices (including server products and computer products) towards high speed, high sensitivity, high integration, and high stability, the requirements for electromagnetic compatibility are also getting higher and higher. As a key device for big data processing in information technology devices, the server has very strict requirements for power supplies. In particular, the DC power supplies provided to each group of high-speed chips on the server motherboard have relatively high requirements for voltage stability and electromagnetic noise. With the continuous increase in the switching frequency and switching speed of DC power conversion, the problems of power supply ripple and high-frequency noise output by power supply chips are relatively prominent.

[0003] In the prior art, it is often the case that capacitors are added on the output path of the power supply, and the capacitance value is adjusted to reduce electromagnetic noise. In this way, the electromagnetic noise that can be reduced by the capacitance value is limited. Since the power of the server is relatively large, the electromagnetic noise of the server cannot be effectively reduced by capacitors. Moreover, the server has relatively high requirements for electromagnetic noise, and even a little electromagnetic noise may cause server failures.

[0004] In view of the technical problem that electromagnetic noise may cause server failures in the related art, no effective solution has been proposed yet. Summary of the Invention

[0005] The embodiments of the present application provide a method and device for electromagnetic noise isolation, a storage medium, and an electronic device, so as to at least solve the problem that electromagnetic noise may cause server failures in the related art.

[0006] According to an embodiment of the present application, an electromagnetic noise isolation method is provided, including: obtaining a first level signal output by an electromagnetic noise detection circuit between a first power plane and a second power plane, wherein there are two parallel connection paths between the first power plane and the second power plane, a switching device is included on a first connection path of the two connection paths, an electromagnetic noise isolation device is provided on a second connection path of the two connection paths, the electromagnetic noise detection circuit is used to detect whether electromagnetic noise is generated between the first power plane and the second power plane, and the first level signal is used to indicate whether at least one of the first power plane and the second power plane generates electromagnetic noise; when the switching device is in a conducting state and the first level signal indicates that at least one of the first power plane and the second power plane generates electromagnetic noise, controlling the switching device to switch from the conducting state to a disconnecting state, and performing electromagnetic noise isolation between the first power plane and the second power plane through the electromagnetic noise isolation device, wherein when the switching device is in the conducting state, the first power plane and the second power plane are connected through the first connection path, and when the switching device is in the disconnecting state, the first connection path is in a disconnected state.

[0007] In an exemplary embodiment, after controlling the switching device to switch from the conducting state to the disconnecting state, the method further includes: obtaining a second level signal output by the electromagnetic noise detection circuit, wherein the second level signal is used to indicate whether at least one of the first power plane and the second power plane generates electromagnetic noise; when the second level signal indicates that neither the first power plane nor the second power plane generates electromagnetic noise, controlling the switching device to switch from the disconnecting state to the conducting state, wherein when the switching device is in the conducting state, the first connection path is in a conducting state.

[0008] In an exemplary embodiment, after obtaining the second level signal output by the electromagnetic noise detection circuit, the method further includes: when the second level signal includes level signals output by the electromagnetic noise detection circuit detected continuously for N times and the values of the level signals detected continuously for N times are all the first value, determining that the second level signal indicates that neither the first power plane nor the second power plane generates electromagnetic noise, wherein N is a positive integer greater than or equal to 2, and the level signal with the value of the first value is the level signal output by the electromagnetic noise detection circuit when no electromagnetic noise is detected between the first power plane and the second power plane.

[0009] In an exemplary embodiment, after obtaining a first level signal output by an electromagnetic noise detection circuit between the first power plane and the second power plane, the method further includes: when the first level signal includes level signals output by the electromagnetic noise detection circuit detected continuously for M times, and the values of the level signals detected continuously for M times are all the second value, determining that the first level signal indicates that at least one of the first power plane and the second power plane generates electromagnetic noise, where M is a positive integer greater than or equal to 2, and the level signal with the value of the second value is the level signal output by the electromagnetic noise detection circuit when detecting that at least one of the first power plane and the second power plane generates electromagnetic noise; or when the first level signal is a level signal with the value of the second value, determining that the first level signal indicates that at least one of the first power plane and the second power plane generates electromagnetic noise.

[0010] In an exemplary embodiment, before obtaining a first level signal output by an electromagnetic noise detection circuit between the first power plane and the second power plane, the method further includes: when the first power plane and the second power plane are set to power planes with the same voltage, detecting whether there is a voltage difference between the first power plane and the second power plane through the electromagnetic noise detection circuit; when no voltage difference between the first power plane and the second power plane is detected, determining that neither the first power plane nor the second power plane generates the electromagnetic noise, and outputting a level signal with a value of the first value through the electromagnetic noise detection circuit; when a voltage difference between the first power plane and the second power plane is detected, determining that at least one of the first power plane and the second power plane generates the electromagnetic noise, and outputting a level signal with a value of the second value through the electromagnetic noise detection circuit, where the first value is different from the second value; where the first level signal includes the level signal with the value of the first value or the level signal with the value of the second value.

[0011] According to another embodiment of the present application, an electromagnetic noise isolation circuit is provided, including: a first power plane and a second power plane, wherein there are two parallel connection paths between the first power plane and the second power plane. A switching device is included on the first connection path among the two connection paths, and an electromagnetic noise isolation device is provided on the second connection path among the two connection paths. The electromagnetic noise isolation device is used for electromagnetic noise isolation between the first power plane and the second power plane; an electromagnetic noise detection circuit is connected to the first power plane and the second power plane, and the electromagnetic noise detection circuit is used for detecting whether electromagnetic noise is generated on the first power plane and the second power plane; a switch control circuit is connected to the switching device and is used for controlling the switching device to switch from the conducting state to the off state when the switching device is in the conducting state and the first level signal output by the electromagnetic noise detection circuit indicates that at least one of the first power plane and the second power plane generates electromagnetic noise. Wherein, when the switching device is in the conducting state, the first power plane and the second power plane are connected through the first connection path, and when the switching device is in the off state, the first connection path is in the off state, and electromagnetic noise isolation is performed between the first power plane and the second power plane through the electromagnetic noise isolation device.

[0012] In an exemplary embodiment, it further includes:

[0013] A control chip is connected to the electromagnetic noise detection circuit and the switch control circuit. The control chip is used for receiving the first level signal output by the electromagnetic noise detection circuit, and when the first level signal indicates that at least one of the first power plane and the second power plane generates electromagnetic noise, outputting a first control signal to the switch control circuit, wherein the first control signal is used for controlling the switching device to switch from the conducting state to the off state through the switch control circuit.

[0014] In an exemplary embodiment, the control chip is further used for receiving the second level signal output by the electromagnetic noise detection circuit, and when the second level signal indicates that neither the first power plane nor the second power plane generates electromagnetic noise, outputting a second control signal to the switch control circuit, wherein the second control signal is used for controlling the switching device to switch from the off state to the conducting state through the switch control circuit. Wherein, when the switching device is in the conducting state, the first connection path is in the conducting state.

[0015] In an exemplary embodiment, the control chip is further configured to determine whether the second level signal indicates that neither the first power supply plane nor the second power supply plane generates electromagnetic noise through the following steps: when the second level signal includes the level signals output by the electromagnetic noise detection circuit continuously detected by the control chip for N times, and the values of the continuously detected level signals are all the first value, it is determined that the second level signal indicates that neither the first power supply plane nor the second power supply plane generates electromagnetic noise, where N is a positive integer greater than or equal to 2, and the level signal with the value of the first value is the level signal output by the electromagnetic noise detection circuit when no electromagnetic noise is detected on the first power supply plane and the second power supply plane.

[0016] In an exemplary embodiment, when the first power supply plane and the second power supply plane are set to power supply planes with the same voltage, the electromagnetic noise detection circuit further includes: a voltage difference detection device connected to the first power supply plane and the second power supply plane, and the voltage difference detection device is configured to detect whether there is a voltage difference between the first power supply plane and the second power supply plane; a signal output circuit connected to the voltage difference detection device, and the signal output circuit is configured to output a level signal with a value of the first value when no voltage difference is detected between the first power supply plane and the second power supply plane, where the level signal with the value of the first value indicates that neither the first power supply plane nor the second power supply plane generates the electromagnetic noise; and output a level signal with a value of the second value when a voltage difference is detected between the first power supply plane and the second power supply plane, where the first value is different from the second value, and the level signal with the value of the second value indicates that at least one of the first power supply plane and the second power supply plane generates the electromagnetic noise; where the first level signal includes the level signal with the value of the first value or the level signal with the value of the second value.

[0017] In an exemplary embodiment, the electromagnetic noise isolation device includes a magnetic bead or an electromagnetic compatibility (EMC) inductor.

[0018] According to another embodiment of the present application, an electromagnetic noise isolation device is provided, including:

[0019] A first acquisition module, configured to acquire a first level signal output by an electromagnetic noise detection circuit between a first power supply plane and a second power supply plane, wherein there are two parallel connection paths between the first power supply plane and the second power supply plane, a switching device is included on a first connection path of the two connection paths, an electromagnetic noise isolation device is provided on a second connection path of the two connection paths, the electromagnetic noise detection circuit is configured to detect whether electromagnetic noise is generated between the first power supply plane and the second power supply plane, and the first level signal is used to indicate whether electromagnetic noise is generated in at least one of the first power supply plane and the second power supply plane;

[0020] A first control module, configured to, when the switching device is in a conducting state and the first level signal indicates that electromagnetic noise is generated in at least one of the first power supply plane and the second power supply plane, control the switching device to switch from the conducting state to a disconnecting state through a switch control circuit, wherein when the switching device is in the conducting state, the first power supply plane and the second power supply plane are connected through the first connection path, and when the switching device is in the disconnecting state, the first connection path is in a disconnected state, and the electromagnetic noise isolation device is configured to isolate electromagnetic noise between the first power supply plane and the second power supply plane when the first level signal indicates that electromagnetic noise is generated in at least one of the first power supply plane and the second power supply plane and the switching device is in the disconnecting state.

[0021] According to another embodiment of the present application, there is also provided a computer-readable storage medium, in which a computer program is stored, and the computer program is configured to execute the steps in any one of the above method embodiments when running.

[0022] According to another embodiment of the present application, there is also provided an electronic device, including a memory and a processor, a computer program is stored in the memory, and the processor is configured to run the computer program to execute the steps in any one of the above method embodiments.

[0023] Through the embodiments of the present application, when the level signal output by the electromagnetic noise detection circuit is used to indicate that electromagnetic noise is generated in at least one of the connected power supply planes, the electrical connection path between the power supply planes can be disconnected by controlling the switching device to switch from the conducting state to the disconnecting state, and electromagnetic noise isolation can be timely performed between the power supply planes through the electromagnetic noise isolation device, avoiding possible failures of the server caused by electromagnetic noise. Therefore, the problem that electromagnetic noise can cause server failures can be solved, and the technical effect of avoiding server failures caused by electromagnetic noise can be achieved. Description of the Drawings

[0024] Figure 1 is a schematic diagram of a network architecture of a server according to an embodiment of the present application;

[0025] Figure 2 is a schematic diagram of a power plane according to an embodiment of the present application;

[0026] Figure 3 is a flowchart of an electromagnetic noise isolation method according to an embodiment of the present application;

[0027] Figure 4 is a schematic of an electromagnetic noise isolation circuit according to an embodiment of the present application Figure 1 ;

[0028] Figure 5 is a schematic of an electromagnetic noise isolation circuit according to an embodiment of the present application Figure 2 ;

[0029] Figure 6 is a schematic of an electromagnetic noise isolation circuit according to an embodiment of the present application Figure 3 ;

[0030] Figure 7 is a schematic diagram of an electromagnetic noise detection circuit according to an embodiment of the present application;

[0031] Figure 8 is a schematic diagram of a switch control circuit according to an embodiment of the present application;

[0032] Figure 9 is a schematic diagram of a method for electromagnetic noise isolation according to an embodiment of the present application;

[0033] Figure 10 is a structural block diagram of an electromagnetic noise isolation device according to an embodiment of the present application. Detailed implementation manners

[0034] In the following, embodiments of the present application will be described in detail with reference to the accompanying drawings and in conjunction with the embodiments.

[0035] It should be noted that the terms "first", "second", etc. in the specification and claims of the embodiments of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence.

[0036] The embodiments of the present application can run on Figure 1 the network architecture shown, Figure 1 which is a schematic diagram of a network architecture of a server according to an embodiment of the present application. As Figure 1 shown, the network architecture includes: server 102, server 104, and server 106.

[0037] Taking server 102 as an example (but not limited to this), the power plane in the embodiments of the present application will be explained. Figure 2 It is a schematic diagram of a power plane according to an embodiment of the present application, as Figure 2 shown. There is a server motherboard 104 deployed on the server 102. There are multiple layers in the server motherboard 104, and one of the layers is a power layer 106. A certain range of the plane can be divided from the power layer 106 as the power plane according to the power supply requirements of each chip in the server (but not limited to this). There can be a connection relationship (but not limited to this) between power planes with the same voltage value. For example: There can be a power plane 110 and a power plane 108 deployed on the power layer 106, and the voltage values of the power plane 110 and the power plane 108 are the same, and the power plane 110 and the power plane 108 are connected.

[0038] In the embodiments of the present application, an electromagnetic noise isolation method running on each server in the above network architecture is provided. Figure 3 It is a flowchart of the electromagnetic noise isolation method according to an embodiment of the present application, as Figure 3 shown. The process includes the following steps:

[0039] Step S302: Obtain a first level signal output by an electromagnetic noise detection circuit between a first power plane and a second power plane. Among them, there are two parallel connection paths between the first power plane and the second power plane. A switching device is included on the first connection path among the two connection paths, and an electromagnetic noise isolation device is provided on the second connection path among the two connection paths. The electromagnetic noise detection circuit is used to detect whether electromagnetic noise is generated between the first power plane and the second power plane, and the first level signal is used to indicate whether at least one of the first power plane and the second power plane generates electromagnetic noise.

[0040] Step S304: When the switching device is in the conducting state and the first level signal indicates that at least one of the first power plane and the second power plane generates electromagnetic noise, control the switching device to switch from the conducting state to the off state, and perform electromagnetic noise isolation between the first power plane and the second power plane through the electromagnetic noise isolation device. Among them, when the switching device is in the conducting state, the first power plane and the second power plane are connected through the first connection path, and when the switching device is in the off state, the first connection path is in the off state.

[0041] Through the above steps, when the level signal output by the electromagnetic noise detection circuit is used to indicate that at least one of the connected power planes generates electrical measurement noise, the electrical connection path between the power planes can be disconnected by controlling the switching device to switch from the conducting state to the off state, and electromagnetic noise isolation can be timely performed between the power planes through the electromagnetic noise isolation device, avoiding possible failures of the server caused by electromagnetic noise. Therefore, the problem that electromagnetic noise can cause server failures can be solved, achieving the technical effect of avoiding server failures caused by electromagnetic noise.

[0042] Among them, the execution subject of the above steps can be a server or the like, but is not limited thereto.

[0043] The execution order of step S302 and step S304 can be interchanged, that is, step S304 can be executed first, and then S302 can be executed.

[0044] In the technical solution provided in the above step S302, there are two parallel connection paths between the first power plane and the second power plane. When neither the first power plane nor the second power plane generates electromagnetic noise, the first power plane and the second power plane can be connected through the above two parallel connection paths, but are not limited thereto.

[0045] Optionally, in this embodiment, when the change frequency of the load transient current exceeds the adjustable range of the power supply chip on the server motherboard, the voltage output of the voltage regulator source will drop, thereby generating electromagnetic noise. The electromagnetic noise can include, but is not limited to, electromagnetic noise generated by high-frequency current, electromagnetic noise generated by the power supply, etc. The electromagnetic noise may occur at the source end (i.e., the power supply output end) or may be generated at the load end (i.e., the power supply input end). It is possible to, but not limited to, detect in real time whether electromagnetic noise is generated between the connected power planes through the electromagnetic noise detection circuit and output a first level signal, improving the timeliness of detecting whether electromagnetic noise is generated between the connected power planes.

[0046] Optionally, in this embodiment, the switching device can include, but is not limited to, various types of MOS transistors (Metal-Oxide-Semiconductor Field-Effect Transistor), such as PMOS transistors (P-channel type) and NMOS (N-channel type) transistors, etc.

[0047] Optionally, in this embodiment, the electromagnetic noise isolation device can be used to, but is not limited to, suppress and absorb high-frequency noise and spike interference on signal lines or power lines, reducing the impact of electromagnetic noise on the power plane, and thereby improving the stability of server operation.

[0048] In an exemplary embodiment, determining whether electromagnetic noise is generated on a power supply plane based on a first level signal may, but is not limited to, include one of the following situations:

[0049] Situation 1: When the first level signal includes the level signals output by the electromagnetic noise detection circuit detected continuously for M times, and the values of the continuously detected M level signals are all the second value, it is determined that the first level signal indicates that at least one of the first power supply plane and the second power supply plane generates electromagnetic noise, where M is a positive integer greater than or equal to 2, and the level signal with the value of the second value is the level signal output by the electromagnetic noise detection circuit when detecting that at least one of the first power supply plane and the second power supply plane generates electromagnetic noise.

[0050] Optionally, in this embodiment, it may, but is not limited to, indicate that at least one of the first power supply plane and the second power supply plane generates electromagnetic noise when the electromagnetic noise detection circuit continuously detects that the values of the level signals are all the second value. In this way, electromagnetic noise with an extremely short duration can be filtered out, and instead, electromagnetic noise with a duration satisfying a time threshold is detected, improving the accuracy of the level signal output by the electromagnetic noise detection circuit.

[0051] Situation 2: When the first level signal is a level signal with the value of the second value, it is determined that the first level signal indicates that at least one of the first power supply plane and the second power supply plane generates electromagnetic noise.

[0052] Optionally, in this embodiment, it may, but is not limited to, indicate that at least one of the first power supply plane and the second power supply plane generates electromagnetic noise when the electromagnetic noise detection circuit detects that the values of the level signals are all the second value. In this way, continuous electromagnetic noise can be detected in a timely manner when electromagnetic noise is generated on the power supply plane, improving the timeliness of the level signal output by the electromagnetic noise detection circuit.

[0053] In an exemplary embodiment, the electromagnetic noise detection circuit can output a first-level signal in the following ways, but not limited thereto: When the first power supply plane and the second power supply plane are set as power supply planes with the same voltage, the electromagnetic noise detection circuit detects whether there is a voltage difference between the first power supply plane and the second power supply plane; when no voltage difference is detected between the first power supply plane and the second power supply plane, it is determined that neither the first power supply plane nor the second power supply plane generates the electromagnetic noise, and a level signal with a value of the first value is output through the electromagnetic noise detection circuit; when a voltage difference is detected between the first power supply plane and the second power supply plane, it is determined that at least one of the first power supply plane and the second power supply plane generates the electromagnetic noise, and a level signal with a value of the second value is output through the electromagnetic noise detection circuit, where the first value is different from the second value; where the first-level signal includes the level signal with the value of the first value or the level signal with the value of the second value.

[0054] Optionally, in this embodiment, the first power supply plane and the second power supply plane can be set as power supply planes with the same voltage, but not limited thereto. In this way, when the electromagnetic noise detection circuit detects the voltage difference between the first power supply plane and the second power supply plane, it can be avoided that the detected voltage difference is the voltage difference inherent between the power supply planes themselves, rather than the voltage difference caused by the power supply planes generating electromagnetic noise, improving the accuracy of the electromagnetic noise detection circuit in detecting the voltage difference between the power supply planes.

[0055] In the technical solution provided in step S304 above, but not limited thereto, when the switching device is in the on state and the first-level signal is a level signal with the second value, it can be indicated that the first power supply plane and the second power supply plane are connected through the first connection path and the second connection path, and at least one of the first power supply plane and the second power supply plane generates electromagnetic noise. In such a case, the first connection path between the first power supply plane and the second power supply plane can be disconnected by controlling the switching device to switch from the on state to the off state, so that the first power supply plane and the second power supply plane are only connected through the second connection path, and then electromagnetic noise isolation is performed between the first power supply plane and the second power supply plane through the electromagnetic noise isolation device. In this way, the isolation of electromagnetic noise between the connected power supply planes is achieved, greatly reducing the mutual interference of electromagnetic noise between the power supply planes.

[0056] In an exemplary embodiment, after controlling the switching device to switch from the conducting state to the off state, the first connection path can be restored in the following ways, but not limited thereto: obtaining a second level signal output by the electromagnetic noise detection circuit, where the second level signal is used to indicate whether electromagnetic noise is generated in at least one of the first power plane and the second power plane; in the case where the second level signal indicates that no electromagnetic noise is generated in both the first power plane and the second power plane, controlling the switching device to switch from the off state to the conducting state, where when the switching device is in the conducting state, the first connection path is in the conducting state.

[0057] Optionally, in this embodiment, after disconnecting the first connection path, the electromagnetic noise detection circuit can, but is not limited to, continue to detect whether electromagnetic noise is generated in the power plane and output a corresponding second level signal. The first connection path can be restored, but is not limited to, in the case where the second level signal is used to indicate that no electromagnetic noise is generated in both the first power plane and the second power plane. In this way, the connection path between the power planes can be flexibly switched according to whether electromagnetic noise is generated in the power plane, and the flexibility of switching the connection path between the power planes is improved.

[0058] Optionally, in this embodiment, in the case where the second level signal is used to indicate that electromagnetic noise is generated in at least one of the first power plane and the second power plane, the switching device can be controlled to continue to remain in the off state, and the electromagnetic noise detection circuit can, but is not limited to, continue to detect whether electromagnetic noise is generated in the power plane and output a corresponding second level signal until, in the case where the second level signal is used to indicate that no electromagnetic noise is generated in both the first power plane and the second power plane, the switching device is controlled to switch from the off state to the conducting state.

[0059] In an embodiment of the present application, an electromagnetic noise isolation circuit operating in each server of the above network architecture is provided. Figure 4 It is a schematic diagram of the electromagnetic noise isolation circuit according to the embodiment of the present application. Figure 1 , as Figure 4As shown, the above electromagnetic noise isolation circuit may but is not limited to include: a power supply plane 110 (i.e., the above-mentioned first power supply plane) and a power supply plane 108 (i.e., the above-mentioned second power supply plane). Among them, there are two parallel connection paths between the power supply plane 110 and the power supply plane 108. A switching device 204 is included on the connection path 01 (i.e., the above-mentioned first connection path) of the two connection paths, and an electromagnetic noise isolation device 202 is provided on the connection path 02 (i.e., the above-mentioned second connection path) of the two connection paths. The electromagnetic noise isolation device 202 is used for electromagnetic noise isolation between the power supply plane 110 and the power supply plane 108; an electromagnetic noise detection circuit 208, connected to the power supply plane 110 and the power supply plane 108, and the electromagnetic noise detection circuit 208 is used for detecting whether electromagnetic noise is generated on the power supply plane 110 and the power supply plane 108; a switch control circuit 206, connected to the switching device 204, and is used for controlling the switching device 204 to switch from the conducting state to the off state when the switching device 204 is in the conducting state and the first level signal output by the electromagnetic noise detection circuit 208 indicates that at least one of the power supply plane 110 and the power supply plane 108 generates electromagnetic noise. Among them, when the switching device 204 is in the conducting state, the power supply plane 110 and the power supply plane 108 are connected through the connection path 01. When the switching device is in the off state, the connection path 01 is in the off state, and electromagnetic noise isolation is performed between the power supply plane 110 and the power supply plane 108 through the electromagnetic noise isolation device.

[0060] In an exemplary embodiment, the above electromagnetic noise isolation circuit may but is not limited to further include a control chip, connected to the electromagnetic noise detection circuit and the switch control circuit. The control chip is used for receiving the first level signal output by the electromagnetic noise detection circuit, and when the first level signal indicates that at least one of the first power supply plane and the second power supply plane generates electromagnetic noise, outputting a first control signal to the switch control circuit, where the first control signal is used for controlling the switching device to switch from the conducting state to the off state through the switch control circuit.

[0061] Optionally, in this embodiment, the control chip may but is not limited to include a BMC (Baseboard Management Controller) chip, and may but is not limited to obtain the first level signal through the control chip and output a corresponding control signal. Figure 5 is a schematic diagram of the electromagnetic noise isolation circuit according to an embodiment of the present application Figure 2 , such as Figure 5As shown, the above electromagnetic noise isolation circuit may but is not limited to include: a power plane 110 (i.e., the above-mentioned first power plane) and a power plane 108 (i.e., the above-mentioned second power plane). Among them, there are two parallel connection paths between the power plane 110 and the power plane 108. A switching device 204 is included on the connection path 01 (i.e., the above-mentioned first connection path) among the two connection paths, and an electromagnetic noise isolation device 202 is provided on the connection path 02 (i.e., the above-mentioned second connection path) among the two connection paths. The electromagnetic noise isolation device 202 is used for electromagnetic noise isolation between the power plane 110 and the power plane 108; an electromagnetic noise detection circuit 208, which is connected to the power plane 110 and the power plane 108, and the electromagnetic noise detection circuit 208 is used for detecting whether electromagnetic noise is generated on the power plane 110 and the power plane 108; a switch control circuit 206, which is connected to the switching device 204, and is used for controlling the switching device 204 to switch from the conducting state to the off state when the switching device 204 is in the conducting state and the first level signal output by the electromagnetic noise detection circuit 208 indicates that at least one of the power plane 110 and the power plane 108 generates electromagnetic noise. Among them, when the switching device 204 is in the conducting state, the power plane 110 and the power plane 108 are connected through the connection path 01. When the switching device is in the off state, the connection path 01 is in the off state, and electromagnetic noise isolation is performed between the power plane 110 and the power plane 108 through the electromagnetic noise isolation device.

[0062] A control chip 210, which is connected to the electromagnetic noise detection circuit 208 and the switch control circuit 206. The control chip 210 is used for receiving the first level signal output by the electromagnetic noise detection circuit 208, and when the first level signal indicates that at least one of the power plane 110 and the power plane 108 generates electromagnetic noise, outputting a first control signal to the switch control circuit 206. Among them, the first control signal is used for controlling the switching device 204 to switch from the conducting state to the off state through the switch control circuit 206.

[0063] In an exemplary embodiment, the control chip may also but is not limited to be used for receiving the second level signal output by the electromagnetic noise detection circuit, and when the second level signal indicates that neither the first power plane nor the second power plane generates electromagnetic noise, outputting a second control signal to the switch control circuit. Among them, the second control signal is used for controlling the switching device to switch from the off state to the conducting state through the switch control circuit. Among them, when the switching device is in the conducting state, the second connection path is in the conducting state.

[0064] In an exemplary embodiment, the control chip is further configured to determine whether the second level signal indicates that neither the first power plane nor the second power plane generates electromagnetic noise through the following steps: when the second level signal includes the level signals output by the electromagnetic noise detection circuit continuously detected by the control chip for N times, and the values of the continuously detected level signals for N times are all the first value, it is determined that the second level signal indicates that neither the first power plane nor the second power plane generates electromagnetic noise, where N is a positive integer greater than or equal to 2, and the level signal with the value of the first value is the level signal output by the electromagnetic noise detection circuit when no electromagnetic noise is detected on the first power plane and the second power plane.

[0065] In an exemplary embodiment, when the first power plane and the second power plane are set to power planes with the same voltage, the electromagnetic noise detection circuit further includes: a voltage difference detection device connected to the first power plane and the second power plane, and the voltage difference detection device is configured to detect whether there is a voltage difference between the first power plane and the second power plane; a signal output circuit connected to the voltage difference detection device, and the signal output circuit is configured to output a level signal with a value of the first value when no voltage difference is detected between the first power plane and the second power plane, where the level signal with the value of the first value indicates that neither the first power plane nor the second power plane generates the electromagnetic noise; when a voltage difference is detected between the first power plane and the second power plane, a level signal with a value of the second value is output, where the first value is different from the second value, and the level signal with the value of the second value indicates that at least one of the first power plane and the second power plane generates the electromagnetic noise; where the first level signal includes the level signal with the value of the first value or the level signal with the value of the second value.

[0066] Optionally, in this embodiment, the voltage difference between the first power plane and the second power plane can be detected, but is not limited to, by a voltage difference detection device. Figure 6 It is a schematic diagram of the electromagnetic noise isolation circuit according to an embodiment of the present application. Figure 3 , such as Figure 6 shown, the above electromagnetic noise isolation circuit may include, but is not limited to: a power plane 110 (i.e., the above-mentioned first power plane), a power plane 108 (i.e., the above-mentioned second power plane), a switch control circuit 206, a control chip 210, and an electromagnetic noise detection circuit 208. The electromagnetic noise detection circuit 208 may include, but is not limited to, a signal output circuit 208-2 and a voltage difference detection device 208-1.

[0067] There are two parallel connection paths between power plane 110 and power plane 108. The connection path 01 (i.e., the first connection path mentioned above) of the two connection paths includes a switching device 204, and an electromagnetic noise isolation device 202 is provided on the connection path 02 (i.e., the second connection path mentioned above) of the two connection paths. The electromagnetic noise isolation device 202 is used to isolate electromagnetic noise between power plane 110 and power plane 108;

[0068] A switch control circuit 206, connected to the switching device 204, is used to control the switching device 204 to switch from the conducting state to the off state when the switching device 204 is in the conducting state and the first-level signal output by the electromagnetic noise detection circuit 208 indicates that at least one of the power plane 110 and the power plane 108 generates electromagnetic noise. Wherein, when the switching device 204 is in the conducting state, the power plane 110 and the power plane 108 are connected through the connection path 01. When the switching device is in the off state, the connection path 01 is in the off state, and electromagnetic noise isolation is performed between the power plane 110 and the power plane 108 through the electromagnetic noise isolation device.

[0069] A control chip 210, connected to the signal output circuit 208-2 and the switch control circuit 206, is used to receive the first-level signal output by the signal output circuit 208-2, and when the first-level signal indicates that at least one of the power plane 110 and the power plane 108 generates electromagnetic noise, output a first control signal to the switch control circuit 206, wherein the first control signal is used to control the switching device 204 to switch from the conducting state to the off state through the switch control circuit 206.

[0070] A voltage difference detection device 208-1, connected to the power plane 110 (i.e., the first power plane mentioned above) and the power plane 108 (i.e., the second power plane mentioned above), is used to detect whether there is a voltage difference between the power plane 110 and the power plane 108; A signal output circuit 208-2, connected to the voltage difference detection device 208-1, is used to output a level signal with a value of the first value when no voltage difference is detected between the power plane 110 and the power plane 108, wherein the level signal with a value of the first value indicates that neither the power plane 110 nor the power plane 108 generates electromagnetic noise; when a voltage difference is detected between the power plane 110 and the power plane 108, output a level signal with a value of the second value, wherein the first value is different from the second value, and the level signal with a value of the second value indicates that at least one of the power plane 110 and the power plane 108 generates electromagnetic noise; wherein, the first-level signal includes the level signal with a value of the first value or the level signal with a value of the second value.

[0071] In an exemplary embodiment, the electromagnetic noise isolation device includes a magnetic bead or an electromagnetic compatibility (EMC) inductor.

[0072] Optionally, in this embodiment, electromagnetic noise isolation devices such as magnetic beads or EMC (Electro Magnetic Compatibility) inductors can be used, but are not limited to, to absorb the electromagnetic noise generated by the power plane. Magnetic beads can be used, but are not limited to, suppressing high-frequency noise and spike interference on signal lines and power lines, and also have the ability to absorb electrostatic pulses. When there is a magnetic bead path between the connected power planes, the magnetic bead will isolate the electromagnetic noise between power plane A and power plane B, thereby reducing the loop path of the electromagnetic noise, and thus greatly reducing the electromagnetic radiation effect caused by high-frequency noise.

[0073] To better understand the above electromagnetic noise isolation circuit, the process of implementing electromagnetic noise isolation in the embodiments of the present application will be explained below in conjunction with optional embodiments, which can be used, but are not limited to, in the embodiments of the present application.

[0074] Figure 7 is a schematic diagram of an electromagnetic noise detection circuit according to an embodiment of the present application, as Figure 7 shown. The above electromagnetic noise detection circuit can include, but is not limited to, an inductor L1, an inductor L2, a capacitor C1, a capacitor C2, an operational amplifier 702 (i.e., the above voltage difference detection device), MOS transistors M1, MOS transistors M2, a resistor R1, a resistor R2, and a resistor R3. The signal output circuit can include, but is not limited to, MOS transistors M1, MOS transistors M2, a resistor R1, a resistor R2, and a resistor R3. MOS transistors M1 and MOS transistors M2 can be, but are not limited to, N MOS transistors.

[0075] VCC_A (i.e., the above first power plane) is connected in series with inductor L1 and capacitor C1 and then connected to the non-inverting input terminal 5 of operational amplifier 702. VCC_B (i.e., the above second power plane) is connected in series with inductor L2 and capacitor C2 and then connected to the inverting input terminal 6 of operational amplifier 702. The output terminal 7 of operational amplifier 702 is connected to the gate of MOS transistor M1. The pin 8 of operational amplifier 702 is connected to resistor R1 and then connected to VCC_5V. The pin 4 of operational amplifier 702 is grounded. The source of MOS transistor M1 is grounded. The drain of MOS transistor M1 is connected to the gate of MOS transistor M2 and then connected to resistor R3. The source of MOS transistor M2 is grounded. The drain of MOS transistor M2 is connected to resistor R2 and then connected to VCC_5V. N_out is used to represent the level signal (i.e., the above first level signal) output to the BMC chip (i.e., the above control chip).

[0076] Electromagnetic noise signal sampling can be carried out through, but not limited to, an inductance L and capacitance C series circuit. The characteristics of the inductance and capacitance series resonance circuit are as follows: in the series resonance circuit, when the signal approaches a specific frequency, the current in the circuit reaches the maximum, and this frequency is called the resonance frequency. When the input signal passes through the inductance and capacitance series circuit, according to the characteristics of the inductor and capacitor, the higher the signal frequency, the greater the impedance of the inductor, while the impedance of the capacitor is smaller. A large impedance results in a large attenuation of the signal. A signal with a relatively high frequency will be greatly attenuated when passing through the inductor, and a DC signal cannot pass through the capacitor. When the frequency of the input signal is equal to the resonance frequency of the inductance and capacitance, the impedance of the inductance and capacitance series circuit is the smallest. Therefore, the electromagnetic noise on the power plane of the server motherboard can be detected by adjusting the values of the inductance and capacitance respectively.

[0077] In the case where electromagnetic noise occurs in at least part of the power planes of VCC_A and VCC_B, there is a voltage difference between VCC_A and VCC_B. Then, there will be different voltage drops across the inductor. In such a case, there will be a voltage difference at the input terminal (at least one of the non-inverting input terminal 5 and the inverting input terminal 6) of the operational amplifier 702. The operational amplifier 702 will output an amplified voltage, which in turn drives the MOS transistor M1 to conduct, thereby pulling down the gate input voltage of the MOS transistor M2. Then, N_out for BMC is a high-level signal (i.e., the level signal of the second value mentioned above).

[0078] In the case where no electromagnetic noise occurs in both VCC_A and VCC_B, there is no voltage difference between VCC_A and VCC_B. Then, there is no voltage drop across the inductor. In such a case, there will be no voltage difference at the input terminal (non-inverting input terminal 5 and inverting input terminal 6) of the operational amplifier 702. The MOS transistor M1 remains off, and then the MOS transistor M2 conducts. Then, N_out for BMC is a low-level signal (i.e., the level signal of the first value mentioned above).

[0079] When the BMC chip obtains the level signal output by the electromagnetic noise detection circuit, it can, according to the value of the level signal, output a corresponding control signal to the switch control circuit, thereby controlling the switching device to switch to the conducting state or the off state. In the case where N_out for BMC is a high-level signal (i.e., the level signal of the second value mentioned above), the BMC chip can, but not limited to, detect the level signal output by the electromagnetic noise detection circuit again after 30 ms (or 10 ms or 40 ms, etc.). If it is still a high-level signal, the BMC chip outputs a low-level control signal (i.e., the first control signal mentioned above) to the switch control circuit. In the case where N_out for BMC is a low-level signal (i.e., the level signal of the first value mentioned above), the BMC chip outputs a high-level control signal (i.e., the second control signal mentioned above) to the switch control circuit.

[0080] Figure 8 is a schematic diagram of a switch control circuit according to an embodiment of the present application. As Figure 8 shown, VCC_A (i.e., the above-mentioned first power plane) and VCC_B (i.e., the above-mentioned second power plane) can be connected through, but are not limited to, parallel connection paths 01 and 02. Among them, connection path 01 includes MOS transistor M5 (i.e., the above-mentioned switching device), and connection path 02 includes bead 706 (i.e., the above-mentioned electromagnetic noise isolation device). The above-mentioned switch control circuit includes: operational amplifier 704, MOS transistor M6, MOS transistor M7, resistor R1, resistor R14, resistor R16, resistor R15, and VCC_5V.

[0081] The non-inverting input terminal 5' of operational amplifier 704 is connected to the output terminal BMC_GPIO (General-purpose input / output) of the BMC chip (i.e., the above-mentioned control chip). The inverting input terminal 6' of operational amplifier 704 is grounded. The pin 8' of operational amplifier 704 is connected to resistor R14 and then connected to VCC_5V. The pin 4' of operational amplifier 704 is grounded. The output terminal 7' of operational amplifier 704 is connected to the gate of MOS transistor M6. The source of MOS transistor M6 is grounded. The drain of MOS transistor M6 is connected to the gate of MOS transistor M7 and then connected to resistor R16. Resistor R14 is connected to resistor R16. The source of MOS transistor M7 is grounded. The drain of MOS transistor M7 is connected to the gate of MOS transistor M5. Resistor R15 is connected to the gate of MOS transistor M5 and is in parallel with resistor R16.

[0082] When N_out for BMC is a high-level signal (i.e., the level signal of the above-mentioned second value), the BMC chip outputs a low-level control signal (i.e., the above-mentioned first control signal) to the switch control circuit. In such a case, BMC_GPIO is a low-level signal. Then, operational amplifier 704 has no voltage output, and thus MOS transistor M6 is turned off. The gate of MOS transistor M7 is connected to VCC_5V. Then, MOS transistor M7 is turned on, and thus MOS transistor M5 is turned off, so that VCC_A and VCC_B are only connected through bead 706, realizing the isolation between the electromagnetic noises generated by the power planes and improving the stability of the server operation.

[0083] After the BMC chip disconnects the MOS transistor M5 through the switch control circuit, so that VCC_A and VCC_B are only connected through the bead 706, the BMC chip will detect the level signal of the N_out for BMC signal (i.e., the above-mentioned second level signal) every 30 ms (or 10 ms or 40 ms, etc.). If N_out for BMC is a high-level signal, the BMC_GPIO continues to maintain a low-level signal. If N_out for BMC is detected as a low-level signal twice (or three times or four times, etc.), the BMC chip outputs a high-level control signal (i.e., the above-mentioned second control signal) to the switch control circuit, and the BMC_GPIO changes from a low-level signal to a high-level signal. Then, the operational amplifier 704 has a voltage output, which drives the MOS transistor M6 to conduct. The gate of the MOS transistor M7 is grounded, so the MOS transistor M7 disconnects, and then the MOS transistor M5 conducts, enabling VCC_A and VCC_B to be connected through the MOS transistor M5 and the bead 706.

[0084] When N_out for BMC is a low-level signal (i.e., the level signal of the above-mentioned first value), the BMC chip outputs a high-level control signal (i.e., the above-mentioned second control signal) to the switch control circuit. In this case, the BMC_GPIO is a high-level signal, then the operational amplifier 704 has a voltage output, which drives the MOS transistor M6 to conduct. The gate of the MOS transistor M7 is grounded, so the MOS transistor M7 disconnects, and then the MOS transistor M5 conducts, enabling VCC_A and VCC_B to be connected through the MOS transistor M5 and the bead 706.

[0085] To better understand the implementation process of the above electromagnetic noise isolation method, Figure 9 is a schematic diagram of an electromagnetic noise isolation method according to an embodiment of the present application. As Figure 9 shown, during the normal operation of the server, the power plane 110 (i.e., the above-mentioned first power plane) and the power plane 108 (i.e., the above-mentioned second power plane) are connected through the parallel connection paths 01 and 02. A MOS transistor (i.e., the above-mentioned switching device) is provided on the connection path 01, and a bead (i.e., the above-mentioned electromagnetic noise isolation device) is provided on the connection path 02. It is possible but not limited to detecting whether at least one of the power plane 110 and the power plane 108 generates electromagnetic noise through an electromagnetic noise detection circuit. When neither the power plane 110 nor the power plane 108 generates electromagnetic noise, the signal output circuit outputs a low-level signal (i.e., the level signal with the above-mentioned second value) to the BMC chip.

[0086] When electromagnetic noise is generated in at least one of the power planes 110 and 108, the signal output circuit outputs a high-level signal (i.e., the level signal with the above-mentioned first value) to the BMC chip. Then, the BMC chip will detect the level signal output by the signal output circuit every 30 ms (or 10 ms or 40 ms, etc.). If the N_out for BMC signal is still a high-level signal, then the BMC chip will output a low-level control signal (i.e., the above-mentioned first control signal) to the switch control circuit, and the BMC_GPIO changes from a high-level signal to a low-level signal, thereby disconnecting the connection path 01 between the power planes 110 and 108, so that only the connection between the power planes 110 and 108 is through the bead.

[0087] If the N_out for BMC signal is a low-level signal, then the BMC chip will continuously detect whether there is electromagnetic noise between the power planes 110 and 108, and when electromagnetic noise is generated in at least one of the power planes 110 and 108, it will control that only the connection between the power planes 110 and 108 is through the bead.

[0088] Through the above embodiments, the power supply mode of the power plane can be autonomously switched through the bead and the MOS transistor, and the high-frequency electromagnetic noise at the output end and the high-frequency electromagnetic noise at the load end of the power plane can be respectively detected and suppressed, thereby avoiding the electromagnetic radiation effect caused by high-frequency electromagnetic noise. While improving the power supply quality of the power plane, problems such as the server not starting up and crashing caused by the high-frequency electromagnetic noise of the power supply are avoided.

[0089] Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by means of software plus a necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the embodiments of the present application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disc), including several instructions for causing a terminal device (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of the present application.

[0090] In this embodiment, an electromagnetic noise isolation device is further provided. This device is used to implement the above embodiments and preferred implementation manners, and those that have been described will not be repeated here. As used hereinafter, the term "module" can be a combination of software and / or hardware that can achieve a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementation in hardware, or a combination of software and hardware is also possible and contemplated.

[0091] Figure 10 is a structural block diagram of an electromagnetic noise isolation device according to an embodiment of the present application. As Figure 10 shown, the device includes:

[0092] A first acquisition module 1002, configured to acquire a first level signal output by an electromagnetic noise detection circuit between a first power plane and a second power plane. Among them, there are two parallel connection paths between the first power plane and the second power plane. A switching device is included on the first connection path among the two connection paths, and an electromagnetic noise isolation device is provided on the second connection path among the two connection paths. The electromagnetic noise detection circuit is used to detect whether electromagnetic noise is generated between the first power plane and the second power plane, and the first level signal is used to indicate whether electromagnetic noise is generated in at least one of the first power plane and the second power plane;

[0093] A first control module 1004, configured to, when the switching device is in a conducting state and the first level signal indicates that electromagnetic noise is generated in at least one of the first power plane and the second power plane, control the switching device to switch from the conducting state to a disconnected state through a switch control circuit. Among them, when the switching device is in the conducting state, the first power plane and the second power plane are connected through the first connection path. When the switching device is in the disconnected state, the first connection path is in a disconnected state. The electromagnetic noise isolation device is used to isolate electromagnetic noise between the first power plane and the second power plane when the first level signal indicates that electromagnetic noise is generated in at least one of the first power plane and the second power plane and the switching device is in the disconnected state.

[0094] Through the embodiments of the present application, when the level signal output by the electromagnetic noise detection circuit is used to indicate that at least one of the connected power planes generates electrical measurement noise, the electrical connection path between the power planes can be disconnected by controlling the switching device to switch from the conducting state to the off state, and electromagnetic noise isolation can be timely performed between the power planes through the electromagnetic noise isolation device, avoiding possible failures of the server caused by electromagnetic noise. Therefore, the problem that electromagnetic noise can cause server failures can be solved, and the technical effect of avoiding server failures caused by electromagnetic noise can be achieved.

[0095] Optionally, the device further includes:

[0096] A second acquisition module, configured to acquire a second level signal output by the electromagnetic noise detection circuit after controlling the switching device to switch from the conducting state to the off state, where the second level signal is used to indicate whether at least one of the first power plane and the second power plane generates electromagnetic noise;

[0097] A second control module, configured to control the switching device to switch from the off state to the conducting state when the second level signal indicates that neither the first power plane nor the second power plane generates electromagnetic noise, where when the switching device is in the conducting state, the first connection path is in the conducting state.

[0098] Optionally, the device further includes:

[0099] A first determination module, configured to, after acquiring the second level signal output by the electromagnetic noise detection circuit, determine that the second level signal indicates that neither the first power plane nor the second power plane generates electromagnetic noise when the second level signal includes the level signals output by the electromagnetic noise detection circuit detected continuously for N times and the values of the level signals detected continuously for N times are all the first value, where N is a positive integer greater than or equal to 2, and the level signal with the value of the first value is the level signal output by the electromagnetic noise detection circuit when no electromagnetic noise is detected in the first power plane and the second power plane.

[0100] Optionally, the device further includes:

[0101] A second determination module, configured to, after obtaining a first level signal output by an electromagnetic noise detection circuit between the first power supply plane and the second power supply plane, determine that the first level signal indicates that at least one of the first power supply plane and the second power supply plane generates electromagnetic noise when the first level signal includes the level signals output by the electromagnetic noise detection circuit detected continuously for M times, and the values of the level signals detected continuously for M times are all the second value, where M is a positive integer greater than or equal to 2, and the level signal with the value of the second value is the level signal output by the electromagnetic noise detection circuit when detecting that at least one of the first power supply plane and the second power supply plane generates electromagnetic noise; or

[0102] A third determination module, configured to determine that the first level signal indicates that at least one of the first power supply plane and the second power supply plane generates electromagnetic noise when the first level signal is a level signal with the value of the second value.

[0103] Optionally, the apparatus further includes:

[0104] A detection module, configured to, before obtaining the first level signal output by the electromagnetic noise detection circuit between the first power supply plane and the second power supply plane, detect whether there is a voltage difference between the first power supply plane and the second power supply plane through the electromagnetic noise detection circuit when the first power supply plane and the second power supply plane are set to power supply planes with the same voltage;

[0105] A fourth determination module, configured to determine that neither the first power supply plane nor the second power supply plane generates the electromagnetic noise and output a level signal with a value of the first value through the electromagnetic noise detection circuit when no voltage difference is detected between the first power supply plane and the second power supply plane;

[0106] A fifth determination module, configured to determine that at least one of the first power supply plane and the second power supply plane generates the electromagnetic noise and output a level signal with a value of the second value through the electromagnetic noise detection circuit when a voltage difference is detected between the first power supply plane and the second power supply plane, where the first value is different from the second value;

[0107] Wherein, the first level signal includes the level signal with the value of the first value or the level signal with the value of the second value.

[0108] It should be noted that the above-mentioned modules can be implemented by software or hardware. For the latter, it can be implemented in the following ways, but not limited to: all the above-mentioned modules are located in the same processor; or, the above-mentioned modules are respectively located in different processors in any combination form.

[0109] An embodiment of the present application further provides a computer-readable storage medium storing a computer program, wherein the computer program is configured to execute the steps in any one of the above method embodiments when running.

[0110] In an exemplary embodiment, the above computer-readable storage medium may include, but is not limited to, various media capable of storing computer programs such as USB flash drives, read-only memories (ROMs), random access memories (RAMs), mobile hard disks, magnetic disks, or optical discs.

[0111] An embodiment of the present application further provides an electronic device including a memory and a processor, where the memory stores a computer program, and the processor is configured to run the computer program to execute the steps in any one of the above method embodiments.

[0112] In an exemplary embodiment, the above electronic device may further include a transmission device and an input / output device, where the transmission device is connected to the above processor, and the input / output device is connected to the above processor.

[0113] Specific examples in this embodiment may refer to the examples described in the above embodiments and exemplary embodiments, and will not be repeated here.

[0114] Obviously, those skilled in the art should understand that the above modules or steps of the embodiments of the present application can be implemented by a general-purpose computing device. They can be concentrated on a single computing device or distributed on a network composed of multiple computing devices. They can be implemented by program codes executable by the computing device, so that they can be stored in a storage device and executed by the computing device. And in some cases, the steps shown or described can be executed in a different order from here, or they can be separately fabricated into individual integrated circuit modules, or multiple modules or steps among them can be fabricated into a single integrated circuit module to implement. In this way, the embodiments of the present application are not limited to any specific combination of hardware and software.

[0115] The above is only the preferred embodiment of the present application and is not used to limit the embodiments of the present application. For those skilled in the art, the embodiments of the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the principle of the embodiments of the present application shall be included in the protection scope of the embodiments of the present application.

Claims

1. An electromagnetic noise isolation method, characterized in that, Including: Obtain a first level signal output by an electromagnetic noise detection circuit between a first power supply plane and a second power supply plane. Among them, there are two parallel connection paths between the first power supply plane and the second power supply plane. A switching device is included on a first connection path among the two connection paths, and an electromagnetic noise isolation device is provided on a second connection path among the two connection paths. The electromagnetic noise detection circuit is used to detect whether electromagnetic noise is generated between the first power supply plane and the second power supply plane, and the first level signal is used to indicate whether electromagnetic noise is generated in at least one of the first power supply plane and the second power supply plane; When the switching device is in the conducting state and the first level signal indicates that electromagnetic noise is generated in at least one of the first power supply plane and the second power supply plane, control the switching device to switch from the conducting state to the off state, and perform electromagnetic noise isolation between the first power supply plane and the second power supply plane through the electromagnetic noise isolation device. Among them, when the switching device is in the conducting state, the first power supply plane and the second power supply plane are connected through the first connection path, and when the switching device is in the off state, the first connection path is in the off state.

2. The method according to claim 1, wherein After controlling the switching device to switch from the conducting state to the off state, the method further includes: Obtain a second level signal output by the electromagnetic noise detection circuit, where the second level signal is used to indicate whether electromagnetic noise is generated in at least one of the first power supply plane and the second power supply plane; When the second level signal indicates that neither the first power supply plane nor the second power supply plane generates electromagnetic noise, control the switching device to switch from the off state to the conducting state, where when the switching device is in the conducting state, the first connection path is in the conducting state.

3. The method according to claim 2, wherein After obtaining the second level signal output by the electromagnetic noise detection circuit, the method further includes: When the second level signal includes the level signals output by the electromagnetic noise detection circuit detected continuously for N times and the values of the level signals detected continuously for N times are all the first value, determine that the second level signal indicates that neither the first power supply plane nor the second power supply plane generates electromagnetic noise, where N is a positive integer greater than or equal to 2, and the level signal with the value of the first value is the level signal output by the electromagnetic noise detection circuit when no electromagnetic noise is detected in the first power supply plane and the second power supply plane.

4. The method according to claim 1, wherein After obtaining the first level signal output by the electromagnetic noise detection circuit between the first power supply plane and the second power supply plane, the method further includes: When the first level signal includes the level signals output by the electromagnetic noise detection circuit detected continuously for M times, and the values of the level signals detected continuously for M times are all the second value, it is determined that the first level signal indicates that at least one of the first power supply plane and the second power supply plane generates electromagnetic noise, where M is a positive integer greater than or equal to 2, and the level signal with the value of the second value is the level signal output by the electromagnetic noise detection circuit when detecting that at least one of the first power supply plane and the second power supply plane generates electromagnetic noise; or When the first level signal is a level signal with the value of the second value, it is determined that the first level signal indicates that at least one of the first power supply plane and the second power supply plane generates electromagnetic noise.

5. The method according to claim 1, wherein Before obtaining the first level signal output by the electromagnetic noise detection circuit between the first power supply plane and the second power supply plane, the method further includes:[[]] When the first power supply plane and the second power supply plane are set to power supply planes with the same voltage, detect whether there is a voltage difference between the first power supply plane and the second power supply plane through the electromagnetic noise detection circuit; When no voltage difference is detected between the first power supply plane and the second power supply plane, it is determined that neither the first power supply plane nor the second power supply plane generates the electromagnetic noise, and a level signal with a value of the first value is output through the electromagnetic noise detection circuit; When a voltage difference is detected between the first power supply plane and the second power supply plane, it is determined that at least one of the first power supply plane and the second power supply plane generates the electromagnetic noise, and a level signal with a value of the second value is output through the electromagnetic noise detection circuit, where the first value is different from the second value; Wherein, the first level signal includes the level signal with the value of the first value or the level signal with the value of the second value.

6. An electromagnetic noise isolation circuit, characterized in that, Including: A first power supply plane and a second power supply plane, wherein there are two parallel connection paths between the first power supply plane and the second power supply plane, a switching device is included on the first connection path of the two connection paths, and an electromagnetic noise isolation device is arranged on the second connection path of the two connection paths, and the electromagnetic noise isolation device is used for electromagnetic noise isolation between the first power supply plane and the second power supply plane; An electromagnetic noise detection circuit, connected to the first power supply plane and the second power supply plane, and the electromagnetic noise detection circuit is used for detecting whether the first power supply plane and the second power supply plane generate electromagnetic noise; A switch control circuit, connected to the switch device, is configured to control the switch device to switch from the conducting state to the non-conducting state when the switch device is in the conducting state and the first-level signal output by the electromagnetic noise detection circuit indicates that at least one of the first power plane and the second power plane generates electromagnetic noise. Wherein, when the switch device is in the conducting state, the first power plane and the second power plane are connected through the first connection path; when the switch device is in the non-conducting state, the first connection path is in the open state, and electromagnetic noise isolation is performed between the first power plane and the second power plane through the electromagnetic noise isolation device.

7. The circuit according to claim 6, characterized in that Further comprising: A control chip, connected to the electromagnetic noise detection circuit and the switch control circuit, is configured to receive the first-level signal output by the electromagnetic noise detection circuit, and when the first-level signal indicates that at least one of the first power plane and the second power plane generates electromagnetic noise, output a first control signal to the switch control circuit, wherein the first control signal is used to control the switch device to switch from the conducting state to the non-conducting state through the switch control circuit.

8. The circuit according to claim 7, characterized in that, The control chip is further configured to receive the second-level signal output by the electromagnetic noise detection circuit, and when the second-level signal indicates that neither the first power plane nor the second power plane generates electromagnetic noise, output a second control signal to the switch control circuit, wherein the second control signal is used to control the switch device to switch from the non-conducting state to the conducting state through the switch control circuit. Wherein, when the switch device is in the conducting state, the first connection path is in the conducting state.

9. The circuit according to claim 8, characterized in that, The control chip is further configured to determine whether the second-level signal indicates that neither the first power plane nor the second power plane generates electromagnetic noise through the following steps: When the second-level signal includes the level signals output by the electromagnetic noise detection circuit continuously detected by the control chip for N times and the values of the continuously detected level signals are all the first value, it is determined that the second-level signal indicates that neither the first power plane nor the second power plane generates electromagnetic noise, where N is a positive integer greater than or equal to 2, and the level signal with the value of the first value is the level signal output by the electromagnetic noise detection circuit when no electromagnetic noise is detected in the first power plane and the second power plane.

10. The circuit according to claim 6, characterized in that, When the first power plane and the second power plane are set to power planes with the same voltage, the electromagnetic noise detection circuit further includes: A voltage difference detection device, connected to the first power plane and the second power plane, is configured to detect whether there is a voltage difference between the first power plane and the second power plane; A signal output circuit is connected to the voltage difference detection device. The signal output circuit is configured to output a level signal with a first value when no voltage difference is detected between the first power supply plane and the second power supply plane. Here, the level signal with the first value indicates that neither the first power supply plane nor the second power supply plane generates the electromagnetic noise. When a voltage difference is detected between the first power supply plane and the second power supply plane, a level signal with a second value is output. Here, the first value is different from the second value, and the level signal with the second value indicates that at least one of the first power supply plane and the second power supply plane generates the electromagnetic noise; Wherein, the first level signal includes the level signal with the first value or the level signal with the second value.

11. The circuit according to any one of claims 6 to 10, characterized in that, The electromagnetic noise isolation device includes a magnetic bead or an electromagnetic compatibility (EMC) inductor.

12. An electromagnetic noise isolation device, characterized in that, Comprising: A first acquisition module is configured to acquire a first level signal output by an electromagnetic noise detection circuit between a first power supply plane and a second power supply plane. There are two parallel connection paths between the first power supply plane and the second power supply plane. A switching device is included on a first connection path of the two connection paths, and an electromagnetic noise isolation device is provided on a second connection path of the two connection paths. The electromagnetic noise detection circuit is configured to detect whether the first power supply plane and the second power supply plane generate electromagnetic noise, and the first level signal is used to indicate whether at least one of the first power supply plane and the second power supply plane generates electromagnetic noise; A first control module is configured to, when the switching device is in a conducting state and the first level signal indicates that at least one of the first power supply plane and the second power supply plane generates electromagnetic noise, control the switching device to switch from the conducting state to a disconnect state through a switch control circuit. Here, when the switching device is in the conducting state, the first power supply plane and the second power supply plane are connected through the first connection path. When the switching device is in the disconnect state, the first connection path is in a disconnected state. The electromagnetic noise isolation device is configured to isolate electromagnetic noise between the first power supply plane and the second power supply plane when the first level signal indicates that at least one of the first power supply plane and the second power supply plane generates electromagnetic noise and the switching device is in the disconnect state.

13. A computer-readable storage medium, characterized in that, A computer program is stored in the computer-readable storage medium, wherein when the computer program is executed by a processor, the steps of the method described in any one of claims 1 to 5 are implemented.

14. An electronic device, comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, When the processor executes the computer program, the steps of the method described in any one of claims 1 to 5 are implemented.

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