Protection circuit of connector and electronic equipment

Abstract

The utility model relates to a protection circuit of a connector and electronic equipment. The circuit comprises a mixed insertion prevention connector socket, a multi-way switch and a processor, the anti-mixed-plugging connector socket comprises an adaptive signal pin and a basic signal pin, the adaptive signal pin is connected with the processor, the basic signal pin is connected with the input end of the multi-way switch, and the output end of the multi-way switch is used for outputting a basic signal of the anti-mixed-plugging connector socket; the processor is used for identifying whether a connector plug inserted into the mixed insertion prevention connector socket is a correctly matched connector plug or not according to the level of the adaptive signal pin; and the multi-way switch is connected with the processor and is used for outputting a basic signal of the anti-mixed-plugging connector socket under the condition that the connector plug inserted into the anti-mixed-plugging connector socket is a correctly matched connector plug. Damage caused by wrong insertion of the connector plug into the electronic equipment can be prevented, and the use safety of the equipment is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of circuit technology, and in particular to a protective circuit of a connector and an electronic device. Background Art

[0002] Connectors are important components for connecting electronic devices or circuits. Correct use can ensure stable signal transmission and reliable connection. If the connector plugs are mixed up, it may cause problems such as poor contact, signal interference, and current overload. In severe cases, it may damage the equipment or even cause safety risks such as fire. Utility Model Content

[0003] The purpose of the present disclosure is to provide a connector protection circuit and electronic device, which can automatically identify whether the connector plug inserted at the position is a correctly fitted plug when the connector plug is inserted into the electronic device, and open the signal path of the connector only after the plug is confirmed to be a correctly fitted connector plug, so as to prevent potential equipment damage and dangerous situations.

[0004] In order to achieve the above-mentioned object, according to a first aspect of an embodiment of the present disclosure, a protection circuit of a connector is provided, the circuit comprising: an anti-mixing plug-in connector socket, a multi-way switch and a processor;

[0005] The anti-mixing connector socket comprises an adapting signal pin and a basic signal pin, the adapting signal pin is connected to the processor, the basic signal pin is connected to the input end of the multi-way switch, and the output end of the multi-way switch is used to output the basic signal of the anti-mixing connector socket;

[0006] The processor is used to identify whether the connector plug inserted into the anti-mixing connector socket is a correctly adapted connector plug according to the level of the adaptation signal pin;

[0007] The multi-way switch is connected to the processor and is used to output a basic signal of the anti-mixed plug connector socket when the connector plug inserted into the anti-mixed plug connector socket is a correctly matched connector plug.

[0008] Optionally, the adaptation signal pin includes a VCC signal pin and at least one adaptation pin;

[0009] The VCC signal pin is connected to a VCC direct current voltage, and the at least one adapter pin is connected to a connector identification IO pin of the processor.

[0010] Optionally, the processor outputs an enable signal of the multi-way switch when the connector identifies that the IO pin reads a correct adaptation signal level.

[0011] Optionally, the multi-way switch comprises a single-pole double-throw switch;

[0012] The input end of the single-pole double-throw switch is connected to the basic signal pin, and the floating end of the single-pole double-throw switch is connected to the output end of the multi-way switch.

[0013] Optionally, the multi-way switch includes an enable terminal;

[0014] The enable end is connected to the switch enable pin of the processor, and is used to connect the input end of the single-pole double-throw switch with the floating end of the single-pole double-throw switch when the connector plug inserted into the anti-mixing connector socket is a correctly adapted connector plug.

[0015] Optionally, there are multiple basic signal pins and multiple single-pole double-throw switches, and the basic signal pins and the input ends of the single-pole double-throw switches correspond one to one.

[0016] Optionally, there are a plurality of the anti-mixing connector sockets and the multi-way switches, and the anti-mixing connector sockets and the multi-way switches correspond one to one.

[0017] Optionally, when the anti-mixing connector socket is inserted with different connector plugs, the level combination of the adaptation signal pins is different.

[0018] Optionally, the adapter signal pins of the plurality of anti-mixing connector sockets occupy different input and output pins of the processor, and the enable ends of the plurality of multi-way switches occupy different input and output pins of the processor.

[0019] According to a second aspect of an embodiment of the present disclosure, there is provided an electronic device, comprising the protection circuit of the connector according to any one of the first aspects.

[0020] In summary, the embodiment of the present disclosure provides a protection circuit for a connector, the circuit comprising: an anti-mixing plug connector socket, a multi-way switch and a processor; the anti-mixing plug connector socket comprises an adaptation signal pin and a basic signal pin, the adaptation signal pin is connected to the processor, the basic signal pin is connected to the input end of the multi-way switch, and the output end of the multi-way switch is used to output the basic signal of the anti-mixing plug connector socket; the processor is used to identify whether the connector plug inserted into the anti-mixing plug connector socket is a correctly adapted connector plug according to the level of the adaptation signal pin; the multi-way switch is connected to the processor, and is used to output the basic signal of the anti-mixing plug connector socket when the connector plug inserted into the anti-mixing plug connector socket is a correctly adapted connector plug. The technical solution provided by the embodiment of the present disclosure may include the following beneficial effects:

[0021] First, the embodiments of the present disclosure improve the safety of the device: prevent the damage caused by the wrong connector plug insertion, avoid circuit short circuit, equipment damage and possible dangerous situations.

[0022] Second, the disclosed embodiments improve the reliability of the device by ensuring that the signal connection path can be opened only when the correct connector plug is inserted, thereby reducing device failures caused by mixed insertion of connector plugs.

[0023] Third, the disclosed embodiment improves user-friendliness: without relying on the user's attention and operating experience, the protection circuit can automatically identify and cut off the signal path of the wrong connector plug, thereby protecting the device from potential damage.

[0024] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0026] Figure 1 The figure is a schematic diagram of a protection circuit of a connector according to an exemplary embodiment.

[0027] Figure 2 The figure is a schematic diagram of a protection circuit of a connector according to an exemplary embodiment.

[0028] Figure 3 It is a block diagram of an electronic device according to an exemplary embodiment. DETAILED DESCRIPTION

[0029] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0030] It should be understood that the term "including" and its variations used herein are open inclusions, i.e., "including but not limited to". The term "based on" means "based at least in part on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". The relevant definitions of other terms will be given in the following description.

[0031] It should be noted that the concepts of "first", "second", etc. mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units. The modifications of "one" and "multiple" mentioned in the present disclosure are illustrative and not restrictive. Those skilled in the art should understand that unless otherwise clearly indicated in the context, they should be understood as "one or more". In the description of the present disclosure, unless otherwise specified, "multiple" refers to two or more than two, and other quantifiers are similar; "at least one item", "one item or multiple items" or similar expressions refer to any combination of these items, including any combination of single items or plural items.

[0032] Although operations or steps are described in a specific order in the drawings in the embodiments of the present disclosure, it should not be understood that it is required to perform these operations or steps in the specific order shown or in a serial order, or to perform all the operations or steps shown to obtain the desired results. In the embodiments of the present disclosure, these operations or steps can be performed in series; these operations or steps can also be performed in parallel; or some of these operations or steps can be performed.

[0033] The names of the messages or information exchanged between multiple devices in the embodiments of the present disclosure are only for illustrative purposes and are not used to limit the scope of these messages or information. It is understandable that before using the technical solutions disclosed in the embodiments of the present disclosure, the type, scope of use, and usage scenarios of the personal information involved in the present disclosure should be informed to the user in an appropriate manner in accordance with relevant laws and regulations and the user's authorization should be obtained.

[0034] First, the application scenarios of the present disclosure are described. In order to prevent mixed insertion of connector plugs during product and hardware design, the currently used methods and technologies mainly include the following aspects:

[0035] 1. Physical shape design: Connectors usually adopt different physical shapes and structural designs, such as round, square, rectangular, etc., as well as specific guide protrusions and grooves, etc. The purpose of this design is to ensure that only the corresponding plug can be correctly inserted into the connector socket to prevent misoperation or mixed insertion.

[0036] 2. Polarity design: For some connectors that require polarity distinction, such as USB, HDMI, etc., specific guide lines, grooves or protrusions are designed so that the plug can only be inserted into the connector socket in the correct direction. This can prevent reverse insertion or mixed insertion.

[0037] 3. Coding and identification: Some connectors also use coding and identification to prevent mixed insertion. For example, the interface type and version number corresponding to the plug are marked on the connector socket, or different colors, shapes, textures, etc. are used for identification, so that users can accurately identify and match the correct connector plug.

[0038] In general, through various technical means such as physical shape design, polarity design, coding and identification, the problem of mixed insertion of connector plugs is effectively prevented, and the reliability and safety of the connector are improved.

[0039] However, sometimes, due to material selection and cost considerations, the same type of connector needs to be used on the same board or motherboard, or the shapes and pin layouts of different connectors may be similar. In this case, there is a risk of mixed insertion of connector plugs, which may cause equipment damage, circuit failure, or fire and other dangerous situations. The present disclosure is described below in conjunction with specific embodiments.

[0040] Figure 1 FIG. 1 is a schematic diagram of a protective circuit of a connector according to an exemplary embodiment. Figure 1 As shown, an embodiment of the present disclosure provides a protection circuit for a connector, which may include: an anti-mixing connector socket 10, a multi-way switch 20, and a processor 301;

[0041] The anti-mixing connector socket 10 includes an adaptation signal pin and a basic signal pin, the adaptation signal pin is connected to the processor 301, the basic signal pin is connected to the input end of the multi-way switch 20, and the output end of the multi-way switch 20 is used to output the basic signal of the anti-mixing connector socket 10;

[0042] The processor 301 is used to identify whether the connector plug inserted into the anti-mixing connector socket 10 is a correctly adapted connector plug according to the adaptation signal level of the adaptation signal pin;

[0043] The multi-way switch 20 is connected to the processor 301 and is used to output a basic signal of the anti-mixing connector socket 10 when the connector plug inserted into the anti-mixing connector socket 10 is a correctly matched connector plug.

[0044] In summary, the embodiment of the present disclosure provides a protection circuit for a connector, the circuit comprising: an anti-mixing plug connector socket, a multi-way switch and a processor; the anti-mixing plug connector socket comprises an adaptation signal pin and a basic signal pin, the adaptation signal pin is connected to the processor, the basic signal pin is connected to the input end of the multi-way switch, and the output end of the multi-way switch is used to output the basic signal of the anti-mixing plug connector socket; the processor is used to identify whether the connector plug inserted into the anti-mixing plug connector socket is a correctly adapted connector plug according to the level of the adaptation signal pin; the multi-way switch is connected to the processor, and is used to output the basic signal of the anti-mixing plug connector socket when the connector plug inserted into the anti-mixing plug connector socket is a correctly adapted connector plug. The technical solution provided by the embodiment of the present disclosure may include the following beneficial effects:

[0045] First, the embodiments of the present disclosure improve the safety of the device: prevent the damage caused by the wrong connector plug insertion, avoid circuit short circuit, equipment damage and possible dangerous situations.

[0046] Second, the disclosed embodiments improve the reliability of the device by ensuring that the signal connection path can be opened only when the correct connector plug is inserted, thereby reducing device failures caused by mixed insertion of connector plugs.

[0047] Third, the disclosed embodiment improves user-friendliness: without relying on the user's attention and operating experience, the protection circuit can automatically identify and cut off the signal path of the wrong connector plug, thereby protecting the device from potential damage.

[0048] In some embodiments, the adapter signal pin includes a VCC signal pin and at least one adapter pin; the VCC signal pin is connected to a VCC DC voltage, and the at least one adapter pin is connected to a connector identification IO pin of the processor 301 .

[0049] In some embodiments, the processor 301 outputs an enable signal of the multiplexer 20 when the connector identification IO pin reads a correct adaptation signal level.

[0050] In some embodiments, the multi-way switch 20 includes a single-pole double-throw switch; an input end of the single-pole double-throw switch is connected to the basic signal pin, and a floating end of the single-pole double-throw switch is connected to an output end of the multi-way switch 20 .

[0051] In some embodiments, the multi-way switch 20 includes an enable end; the enable end is connected to the switch enable pin of the processor 301, and is used to connect the input end of the single-pole double-throw switch with the floating end of the single-pole double-throw switch when the connector plug inserted into the anti-mixing connector socket 10 is a correctly adapted connector plug.

[0052] In some embodiments, there are multiple basic signal pins and single-pole double-throw switches, and the basic signal pins and the input terminals of the single-pole double-throw switches correspond one to one.

[0053] In some embodiments, there are multiple anti-mixing connector sockets 10 and multiple switches 20, and the anti-mixing connector sockets 10 and multiple switches 20 correspond one to one.

[0054] In some embodiments, when the anti-mixing connector socket 10 is inserted with different connector plugs, the level combinations of the adapted signal pins are different.

[0055] In some embodiments, the adaptation signal pins of the plurality of anti-mixing connector sockets 10 occupy different input and output pins of the processor 301 , and the enable terminals of the plurality of multi-way switches 20 occupy different input and output pins of the processor 301 .

[0056] Figure 2 FIG. 1 is a schematic diagram of a protective circuit of a connector according to an exemplary embodiment. Figure 2 As shown, the embodiment of the present disclosure provides a protection circuit for a connector having two anti-mixing connector sockets, two multi-way switches and a processor. Figure 2 , the first pin a1 of the first anti-mixing plug connector socket CN1 is connected to VCC, the first adapter pin b1 of the first anti-mixing plug connector socket CN1 is connected to the first connector identification IO pin IO1 of the MCU, the second adapter pin c1 of the first anti-mixing plug connector socket CN1 is connected to the second connector identification IO pin IO2 of the MCU, the N basic signal pins of the first anti-mixing plug connector socket CN1 are connected to the input end of the first multi-way switch K1, that is, the input end (common end) of the N single-pole double-throw switches of the first multi-way switch K1, the output ends of the N basic signals of the first anti-mixing plug connector socket CN1 are connected to the output end of the first multi-way switch K1, that is, the floating end of the N single-pole double-throw switches of the first multi-way switch K1, and the enable end EN1 of the first multi-way switch K1 is connected to the first switch enable pin IO3 of the MCU.

[0057] The first pin a2 of the second anti-mixing plug connector socket CN2 is connected to VCC, the first adapter pin b2 of the second anti-mixing plug connector socket CN2 is connected to the third connector identification IO pin IO4 of the MCU, the second adapter pin c2 of the second anti-mixing plug connector socket CN2 is connected to the fourth connector identification IO pin IO5 of the MCU, the N basic signal pins of the second anti-mixing plug connector socket CN2 are connected to the input end of the second multi-way switch K2, that is, the input end (common end) of the N single-pole double-throw switches of the second multi-way switch K2, the output ends of the N basic signals of the second anti-mixing plug connector socket CN2 are connected to the output end of the second multi-way switch K2, that is, the floating end of the N single-pole double-throw switches of the second multi-way switch K2, and the enable end EN2 of the second multi-way switch K2 is connected to the second switch enable pin IO6 of the MCU.

[0058] Exemplarily, when the level combination identified by the first connector identification IO pin IO1 and the second connector identification IO pin IO2 of the MCU is (1, 0), where 1 represents the high level VCC and 0 represents the low level 0V, it means that the first anti-mixing plug connector socket CN1 is inserted with the correct plug. At this time, the first switch enable pin IO3 of the MCU outputs a valid level signal to enable the enable end EN1 of the first multi-way switch K1, and the switches of the N single-pole double-throw switches of the first multi-way switch K1 are actuated, connecting the input end (common end) and the floating end of the N single-pole double-throw switches of the first multi-way switch K1, so that the N basic signals of the first anti-mixing plug connector socket CN1 can be output through the first multi-way switch K1. When the level combination identified by the first connector identification IO pin IO1 and the second connector identification IO pin IO2 of the MCU is other level combinations, the signal path of the first multi-way switch K1 is disconnected, and the N basic signals of the first anti-mixing plug connector socket CN1 cannot be output. In this way, the potential electrical hazards caused by the wrong insertion of the connector plug are prevented and the equipment is protected.

[0059] Similarly, when the level combination identified by the third connector identification IO pin IO4 and the fourth connector identification IO pin IO5 of the MCU is (0, 1), where 1 represents the high level VCC and 0 represents the low level 0V, it means that the second anti-mixing plug connector socket CN2 is inserted with the correct plug. At this time, the second switch enable pin IO6 of the MCU outputs a valid level signal to enable the enable end EN2 of the second multi-way switch K2, and the switches of the N single-pole double-throw switches of the second multi-way switch K2 are actuated, connecting the input end (common end) and the floating end of the N single-pole double-throw switches of the second multi-way switch K2, so that the N basic signals of the second anti-mixing plug connector socket CN2 can be output through the second multi-way switch K2. When the level combination identified by the third connector identification IO pin IO4 and the fourth connector identification IO pin IO5 of the MCU is other level combinations, the signal path of the second multi-way switch K2 is disconnected, and the N basic signals of the second anti-mixing plug connector socket CN2 cannot be output. This prevents potential electrical hazards caused by incorrect insertion of the connector plug and protects the equipment.

[0060] It can be understood that a circuit using an anti-mixing connector socket with two-way adapter signals can theoretically distinguish between four types of plugs or sockets. If more plugs or sockets need to be distinguished, it is only necessary to increase the adapter signal pins of the anti-mixing connector socket. In this way, more identification level combinations can be obtained, and more plugs or sockets can be distinguished.

[0061] In summary, the embodiment of the present disclosure provides a protection circuit for a connector, the circuit comprising: an anti-mixing plug connector socket, a multi-way switch and a processor; the anti-mixing plug connector socket comprises an adaptation signal pin and a basic signal pin, the adaptation signal pin is connected to the processor, the basic signal pin is connected to the input end of the multi-way switch, and the output end of the multi-way switch is used to output the basic signal of the anti-mixing plug connector socket; the processor is used to identify whether the connector plug inserted into the anti-mixing plug connector socket is a correctly adapted connector plug according to the level of the adaptation signal pin; the multi-way switch is connected to the processor, and is used to output the basic signal of the anti-mixing plug connector socket when the connector plug inserted into the anti-mixing plug connector socket is a correctly adapted connector plug. The technical solution provided by the embodiment of the present disclosure may include the following beneficial effects:

[0062] First, the embodiments of the present disclosure improve the safety of the device: prevent the damage caused by the wrong connector plug insertion, avoid circuit short circuit, equipment damage and possible dangerous situations.

[0063] Second, the disclosed embodiments improve the reliability of the device by ensuring that the signal connection path can be opened only when the correct connector plug is inserted, thereby reducing device failures caused by mixed insertion of connector plugs.

[0064] Third, the disclosed embodiment improves user-friendliness: without relying on the user's attention and operating experience, the protection circuit can automatically identify and cut off the signal path of the wrong connector plug, thereby protecting the device from potential damage.

[0065] Figure 3 FIG. 1 is a block diagram of an electronic device according to an exemplary embodiment. Figure 3 As shown, the electronic device 300 may include the above-mentioned connector protection circuit. The electronic device 300 may also include: a processor 301, a memory 302. The electronic device 300 may also include one or more of a multimedia component 303, an input / output (I / O) interface 304, and a communication component 305.

[0066] The processor 301 is used to control the overall operation of the electronic device 300. The memory 302 is used to store various types of data to support the operation of the electronic device 300, which may include instructions for any application or method used to operate on the electronic device 300, and application-related data, such as contact data, messages sent and received, pictures, audio, video, etc. The memory 302 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (Static Random Access Memory, referred to as SRAM), electrically erasable programmable read-only memory (Electrically Erasable Programmable Read-Only Memory, referred to as EEPROM), erasable programmable read-only memory (Erasable Programmable Read-Only Memory, referred to as EPROM), programmable read-only memory (Programmable Read-Only Memory, referred to as PROM), read-only memory (Read-Only Memory, referred to as ROM), magnetic memory, flash memory, magnetic disk or optical disk. The multimedia component 303 may include a screen and an audio component. The screen may be, for example, a touch screen, and the audio component is used to output and / or input audio signals. For example, the audio component may include a microphone for receiving external audio signals. The received audio signal may be further stored in the memory 302 or sent through the communication component 305. The audio component also includes at least one speaker for outputting audio signals. The I / O interface 304 provides an interface between the processor 301 and other interface modules, and the above-mentioned other interface modules may be keyboards, mice, buttons, etc. These buttons may be virtual buttons or physical buttons. The communication component 305 is used for wired or wireless communication between the electronic device 300 and other devices. Wireless communication, such as Wi-Fi, Bluetooth, Near Field Communication (NFC), 2G, 3G, 4G, NB-IOT, eMTC, or other 5G, etc., or a combination of one or more of them, is not limited here. Therefore, the corresponding communication component 305 may include: Wi-Fi module, Bluetooth module, NFC module, etc.

[0067] In an exemplary embodiment, the electronic device 300 can be implemented by one or more application specific integrated circuits (ASIC), digital signal processors (DSP), digital signal processing devices (DSPD), programmable logic devices (PLD), field programmable gate arrays (FPGA), controllers, microcontrollers, microprocessors or other electronic components.

[0068] In another exemplary embodiment, a computer-readable storage medium including program instructions is also provided, and the program instructions can be executed by a processor. For example, the computer-readable storage medium can be the memory 302 including the program instructions, and the program instructions can be executed by the processor 301 of the electronic device 300.

[0069] In another exemplary embodiment, a computer program product is also provided. The computer program product includes a computer program executable by a programmable device. The computer program can be executed by the programmable device.

[0070] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0071] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0072] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A protective circuit for a connector, characterized in that: The circuit comprises: an anti-mixing plug connector socket, a multi-way switch and a processor; The anti-mixing connector socket comprises an adapting signal pin and a basic signal pin, the adapting signal pin is connected to the processor, the basic signal pin is connected to the input end of the multi-way switch, and the output end of the multi-way switch is used to output the basic signal of the anti-mixing connector socket; The processor is used to identify whether the connector plug inserted into the anti-mixing connector socket is a correctly adapted connector plug according to the level of the adaptation signal pin; The multi-way switch is connected to the processor and is used to output a basic signal of the anti-mixed plug connector socket when the connector plug inserted into the anti-mixed plug connector socket is a correctly matched connector plug.

2. The protective circuit of the connector according to claim 1, characterized in that: The adaptation signal pin includes a VCC signal pin and at least one adaptation pin; The VCC signal pin is connected to a VCC direct current voltage, and the at least one adapter pin is connected to a connector identification IO pin of the processor.

3. The protective circuit of the connector according to claim 2, characterized in that: The processor outputs an enable signal of the multiplexer when the connector identification IO pin reads a correct adaptation signal level.

4. The protective circuit of the connector according to claim 1, characterized in that: The multi-way switch comprises a single-pole double-throw switch; The input end of the single-pole double-throw switch is connected to the basic signal pin, and the floating end of the single-pole double-throw switch is connected to the output end of the multi-way switch.

5. The protective circuit of the connector according to claim 4, characterized in that: The multi-way switch includes an enable terminal; The enable end is connected to the switch enable pin of the processor, and is used to connect the input end of the single-pole double-throw switch with the floating end of the single-pole double-throw switch when the connector plug inserted into the anti-mixing connector socket is a correctly adapted connector plug.

6. The protective circuit of the connector according to claim 4, characterized in that: There are a plurality of basic signal pins and a plurality of single-pole double-throw switches, and the basic signal pins and the input ends of the single-pole double-throw switches correspond one to one.

7. The protective circuit of the connector according to any one of claims 1 to 6, characterized in that: There are a plurality of the anti-mixing connector sockets and the multi-way switches, and the anti-mixing connector sockets and the multi-way switches correspond to each other one by one.

8. The protective circuit of the connector according to any one of claims 1 to 6, characterized in that: When the anti-mixing connector socket is inserted with different connector plugs, the level combination of the adaptation signal pins is different.

9. The protective circuit of the connector according to claim 7, characterized in that: The adapter signal pins of the plurality of anti-mixing connector sockets occupy different input and output pins of the processor, and the enable ends of the plurality of multi-way switches occupy different input and output pins of the processor.

10. An electronic device, characterized in that: The electronic device comprises the protective circuit of the connector according to any one of claims 1 to 9.

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