Network port switch circuit and storage unit

Abstract

The present invention discloses a network port switch circuit and a storage unit, wherein a first isolation module is connected to a first switching module, and a control end of the first switching module is connected to a network transformer through a first resistance module to control the control end of the first switching module to switch and connect to the first end of the first switching module or the second end of the first switching module; a second isolation module is connected to a second switching module, and a control end of the second switching module is connected to a network transformer through a second resistance module to control the control end of the second switching module to switch and connect to the first end of the second switching module or the second end of the second switching module; the first end of the first switching module and the first end of the second switching module are both connected to the first network port module through the network transformer, and the second end of the second switching module and the second end of the second switching module are both connected to the second network port module; the present invention realizes: compatibility with dual network port transmission and single network port transmission, and ensures signal isolation of single network port transmission to avoid mistransmission of transmission signals.

Description

Technical Field

[0001] The present invention relates to the technical field of switching control, and in particular to a network port switch circuit and a storage unit. Background Art

[0002] Depending on the customer's needs at different times, dual-port transmission is required in a certain period of time, while dual-port transmission is required in another period of time. In dual-port data transmission, the processor sends a signal, and through the switching switch, the two switching ends of the switching switch are connected to the intranet port and the external network port respectively, so that the intranet port and the external network port can both transmit the signal; in single-port data transmission, the processor sends a signal, and the signal will only be transmitted to the intranet port, or the signal will only be transmitted to the external network port. The two switching ends of the switching switch are prone to misconnection, causing the signal that should have been transmitted to the intranet port to be transmitted to the external network port, or causing the signal to be transmitted to both the intranet port and the external network port, making it impossible to separate the signal transmission between the intranet port and the external network port. Summary of the Invention

[0003] The purpose of the present invention is to provide a network port switch circuit that is compatible with both dual network port transmission and single network port transmission, and ensures signal isolation of single network port transmission to avoid mistransmission of transmission signals.

[0004] The above-mentioned object of the present invention is achieved through the following technical solutions:

[0005] The present invention provides a network port switch circuit, which includes: a network transformer, a first network port module, a second network port module, a first resistor module, a second resistor module, a first switching module, a second switching module, a first isolation module, and a second isolation module; the first isolation module is connected to the first switching module, and the control end of the first switching module is connected to the network transformer through the first resistor module to control the control end of the first switching module to switch and connect to the first end of the first switching module or the second end of the first switching module; the second isolation module is connected to the second switching module, and the control end of the second switching module is connected to the network transformer through the second resistor module to control the control end of the second switching module to switch and connect to the first end of the second switching module or the second end of the second switching module; the first end of the first switching module and the first end of the second switching module are both connected to the first network port module through the network transformer, and the second end of the second switching module and the second end of the second switching module are both connected to the second network port module.

[0006] According to one embodiment of the present invention, the first switching module is provided with a first switching controller, the input end of the first switching controller is connected to the power supply, the output end of the first switching controller is connected to the first isolation module, the first signal end of the first switching controller is connected to the network transformer, the control end of the first switching controller is connected to the network transformer through the first resistance module, and the second signal end of the first switching controller is connected to the second network port module; through the first resistance module and the first isolation module, the control end of the second switching controller is switched and connected to the first end of the first switching controller or the second end of the first switching module; the second switching module is provided with a second switching controller, the input end of the second switching controller is connected to the power supply, the output end of the second switching controller is connected to the second isolation module, the first signal end of the second switching controller is connected to the network transformer, the control end of the second switching controller is connected to the network transformer through the second resistance module, and the second signal end of the second switching controller is connected to the second network port module; through the second resistance module and the second isolation module, the control end of the second switching controller is switched and connected to the first end of the second switching controller or the second end of the second switching module.

[0007] According to one embodiment of the present invention, the first resistance module includes a first signal resistor and a second signal resistor, the first signal end of the first switching controller is connected to the network transformer through the first signal resistor input, and the second signal end of the first switching controller is connected to the network transformer through the second signal resistor output; the second resistance module includes a third signal resistor and a fourth signal resistor, the first signal end of the second switching controller is connected to the network transformer through the third signal resistor input, and the second signal end of the second switching controller is connected to the network transformer through the fourth signal resistor output.

[0008] According to one embodiment of the present invention, the first switching module is further provided with a first diode and a first protection resistor, the first diode is connected in parallel with the first switching controller, the anode of the first diode is connected to the output end of the first switching controller, the cathode of the first diode is connected to the input end of the first switching controller to form a first common end, and the first common end is connected to the power supply through the first protection resistor; the second switching module is further provided with a second diode and a second protection resistor, the second diode is connected in parallel with the second switching controller, the anode of the second diode is connected to the output end of the second switching controller, the cathode of the second diode is connected to the input end of the second switching controller to form a second common end, and the second common end is connected to the power supply through the second protection resistor.

[0009] According to one embodiment of the present invention, two first switching controllers are provided, and the first diodes are arranged in a one-to-one correspondence with the first switching controllers; and / or two second switching controllers are provided, and the second diodes are arranged in a one-to-one correspondence with the second switching controllers.

[0010] According to one embodiment of the present invention, the first isolation module includes a first transistor, a first isolation resistor and a second isolation resistor; the collector of the first transistor is connected to the output end of the first switching controller, one end of the first isolation resistor is connected to the emitter of the first transistor to form a third common end, the other end of the first isolation resistor is connected to the base of the first transistor to form a fourth common end, and the fourth common end is connected to the processor through the second isolation resistor; the second isolation module includes a second transistor, a third isolation resistor and a fourth isolation resistor; the collector of the second transistor is connected to the output end of the second switching controller, one end of the third isolation resistor is connected to the emitter of the second transistor to form a fifth common end, the other end of the fourth isolation resistor is connected to the base of the second transistor to form a sixth common end, the sixth common end is connected to the fourth isolation resistor, and the sixth common end is connected to the processor through the fourth isolation resistor; the third common end and the fifth common end are both connected to ground.

[0011] According to one embodiment of the present invention, the first signal end of the network transformer is respectively connected to the first resistance module and the first signal end of the first switching controller, the second signal end of the network transformer is respectively connected to the second resistance module and the first signal end of the second switching controller, and the third signal end of the network transformer is connected to the first network port module; the first mutual inductance end of the network transformer is respectively connected to the first signal end of the network transformer and the second signal end of the network transformer, and the first mutual inductance end of the network transformer is grounded through a first capacitor; the second mutual inductance end of the network transformer is connected to the third signal end of the network transformer, the second mutual inductance end of the network transformer is connected to the ground end of the first network port module to form a seventh common end, the seventh common end is grounded, and a mutual inductance resistor is provided between the second mutual inductance end of the network transformer and the seventh common end; the first signal end of the second network port module is connected to the second signal end of the first switching controller, the second signal end of the second network port module is connected to the second signal end of the second switching controller, the mutual inductance end of the second network port module is respectively connected to the first signal end of the second network port module and the second signal end of the second network port module, and the mutual inductance end of the second network port module is grounded through a second capacitor.

[0012] According to an embodiment of the present invention, a third capacitor is further provided between the second mutual inductance terminal of the network transformer and the seventh common terminal.

[0013] According to one embodiment of the present invention, the first network port module is provided with a first connection indication terminal and a first activity indication terminal, the first connection indication terminal is connected to a first connection indicator light, the first activity indication terminal is connected to a first activity indicator light, a first indication resistor is provided between the first connection indication terminal and the first connection indicator light, and a second indication resistor is provided between the first activity indication terminal and the first activity indicator light; the second network port module is provided with a second connection indication terminal and a second activity indication terminal, the second connection indication terminal is connected to a second connection indicator light, the second activity indication terminal is connected to a second activity indicator light, a third indication resistor is provided between the second connection indication terminal and the second connection indicator light, and a fourth indication resistor is provided between the second activity indication terminal and the second activity indicator light.

[0014] Another technical solution adopted by the present invention is: a storage unit, including the above-mentioned network port switch circuit.

[0015] Compared with the prior art, the network port switch circuit of the present invention has the following beneficial effects:

[0016] Acquire signals output by the processor through the first isolation module and the second isolation module respectively, then use the first switching module to control the transmission direction of the signal acquired by the first isolation module, and use the second switching module to control the transmission direction of the signal acquired by the second isolation module;

[0017] Then, the first end of the first switching module is connected to the first network port module through a network transformer, and the second end of the second switching module is connected to the second network port module, so that the signal obtained by the first isolation module is transmitted to the first network port module or the second network port module, or the first network port module or the second network port module are both transmitted to the signal obtained by the first isolation module; and the first end of the second switching module is connected to the first network port module through a network transformer, and the second end of the second switching module is connected to the second network port module, so that the signal obtained by the second isolation module is transmitted to the first network port module or the second network port module, or the first network port module and the second network port module are both transmitted to the signal obtained by the first isolation module; dual-network port transmission of signals can be realized, and single-network port transmission of signals can be realized.

[0018] Then, the control end of the first switching module is connected to the network transformer through the first resistor module to control the control end of the first switching module to switch and connect to the first end of the first switching module or the second end of the first switching module, ensuring that the signal obtained by the first isolation module is only transmitted to the first network port module or the second network port module; then, the control end of the second switching module is connected to the network transformer through the second resistor module to control the control end of the second switching module to switch and connect to the first end of the second switching module or the second end of the second switching module, ensuring that the signal obtained by the second isolation module is only transmitted to the first network port module or the second network port module; at the same time, signal isolation of single network port transmission of the signals obtained by the first isolation module and the second isolation module is realized, or signal isolation of single network port transmission of the signals obtained by the first isolation module and the second isolation module is realized respectively.

[0019] In this way, the network port switch circuit is compatible with both dual-network port transmission and single-network port transmission of signals, and ensures signal isolation of the single-network port transmission of signals to avoid mistransmission of transmission signals. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be described in conjunction with the accompanying drawings to illustrate the embodiments. The drawings are provided for illustrative purposes only. Without departing from the principles of the present invention, those skilled in the art will readily be able to create other embodiments based on the steps described below.

[0021] Figure 1 This is a schematic diagram of the connection between the network transformer and the first network port module of the network port switch circuit of the present invention;

[0022] Figure 2 It is a schematic diagram of the components of the network transformer of the network port switch circuit of the present invention;

[0023] Figure 3 1 is a schematic diagram of the components of the first network port module of the network port switch circuit of the present invention;

[0024] Figure 4 Schematic diagram of the connection between the first switching module and the first isolation module of the network port switch circuit of the present invention;

[0025] Figure 5 Schematic diagram of the connection between the second switching module and the second isolation module of the network port switch circuit of the present invention;

[0026] Figure 6 This is a connection diagram of the first resistor module of the network port switch circuit of the present invention;

[0027] Figure 7 1 is a connection diagram of the second resistor module of the network port switch circuit of the present invention;

[0028] Figure 8It is a schematic diagram of the components of the second network port module of the network port switch circuit of the present invention.

[0029] Main structure and symbol description:

[0030] U1, network transformer; J1, first network port module; U2, second network port module; RL1, first switching controller; D1, first diode; R1, first protection resistor; RL3, second switching controller; D3, second diode; R34, second protection resistor; Q1, first transistor; R19, first isolation resistor; R16, second isolation resistor; Q2, second transistor; R39, third isolation resistor; R37, fourth isolation resistor; CL1, third capacitor; R9, first indicator resistor; R8, second indicator resistor; R25, third indicator resistor; R22, fourth indicator resistor; 10, first Resistor module; 11. First signal resistor; 12. Second signal resistor; 20. Second resistor module; 21. Third signal resistor; 22. Fourth signal resistor; 30. First switching module; 31. First common terminal; 40. Second switching module; 41. Second common terminal; 50. First isolation module; 51. Third common terminal; 52. Fourth common terminal; 60. Second isolation module; 61. Fifth common terminal; 62. Sixth common terminal; 70. Seventh common terminal; 71. Mutual inductance resistor; 80. First connection indication terminal; 81. First activity indication terminal; 90. Second connection indication terminal; 91. Second activity indication terminal. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. It will be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, not all structures, are shown in the drawings. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present invention.

[0032] The terms "first," "second," and the like in the present invention are used to distinguish between different objects, not to describe a specific order. Furthermore, the terms "including," "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements but may optionally include steps or elements not listed, or may optionally include other steps or elements inherent to the process, method, product, or apparatus.

[0033] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute a separate or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0034] See also Figures 1 to 8 This embodiment provides a network port switch circuit, which includes: a network transformer U1, a first network port module J1, a second network port module U2, a first resistor module 10, a second resistor module 20, a first switching module 30, a second switching module 40, a first isolation module 50, and a second isolation module 60; the first isolation module 50 is connected to the first switching module 30, and the control end of the first switching module 30 is connected to the network transformer U1 through the first resistor module 10 to control the control end of the first switching module 30 to switch between the first end of the first switching module 30 or the second end of the first switching module 30; the second isolation module 60 is connected to the second switching module 40, and the control end of the second switching module 40 is connected to the network transformer U1 through the second resistor module 20 to control the control end of the second switching module 40 to switch between the first end of the second switching module 40 or the second end of the second switching module 40; the first end of the first switching module 30 and the first end of the second switching module 40 are both connected to the first network port module J1 through the network transformer U1, and the second end of the second switching module 40 and the second end of the second switching module 40 are both connected to the second network port module U2.

[0035] In a specific implementation, the first isolation module 50 obtains the first signal output by the processor. When the control end of the first switching module 30 is only switched to connect to the first end of the first switching module 30, the first signal is transmitted to the first network port module J1 through the network transformer U1. When the control end of the first switching module 30 is only switched to connect to the second end of the first switching module 30, the first signal is transmitted to the second network port module U2. When the control end of the first switching module 30 is simultaneously switched to connect to the first end of the first switching module 30 and the second end of the first switching module 30, the first network port module J1 and the second network port module U2 are both transmitted to the first signal. The second isolation module 60 obtains the processing output. When the control end of the second switching module 40 is only switched to connect to the first end of the second switching module 40, the second signal is transmitted to the first network port module J1 through the network transformer U1; when the control end of the second switching module 40 is only switched to connect to the second end of the second switching module 40, the second signal is transmitted to the second network port module U2; when the control end of the second switching module 40 is simultaneously switched to connect to the first end of the second switching module 40 and the second end of the second switching module 40, the first network port module J1 and the second network port module U2 are both transmitted to the second signal; so that the network port switch circuit is compatible with both dual-network port transmission of signals and single-network port transmission of signals;

[0036] When the control end of the first switching module 30 is switched to connect only to the first end of the first switching module 30, the network transformer U1 is used to send a modulation signal to the first resistance module 10, so that the control end of the first switching module 30 cannot be connected to the second end of the first switching module 30. When the control end of the first switching module 30 is switched to connect only to the second end of the first switching module 30, the network transformer U1 is used to send a modulation signal to the first resistance module 10, so that the control end of the first switching module 30 cannot be connected to the first end of the first switching module 30, thereby ensuring the signal isolation of the single network port transmission of the first signal and preventing the first signal from being mistakenly transmitted to a non-designated network port.

[0037] When the control end of the second switching module 40 is switched to connect only to the first end of the second switching module 40, the network transformer U1 is used to send a modulation signal to the second resistance module 20, so that the control end of the second switching module 40 cannot be connected to the second end of the second switching module 40. When the control end of the second switching module 40 is switched to connect only to the second end of the second switching module 40, the network transformer U1 is used to send a modulation signal to the second resistance module 20, so that the control end of the second switching module 40 cannot be connected to the first end of the second switching module 40, thereby ensuring the signal isolation of the single network port transmission of the second signal and preventing the second signal from being mistakenly transmitted to a non-designated network port.

[0038] By utilizing the first isolation module 50, the second isolation module 60, the first switching module 30, the second switching module 40, the first resistance module 10, the second resistance module 20, and the network transformer U1, while realizing single-port signal transmission, dual-port signal transmission can also be realized, thereby broadening the scope of use of the network port switch circuit;

[0039] In this way, the network port switch circuit is compatible with both dual-network port transmission and single-network port transmission of signals, and ensures signal isolation of the single-network port transmission of signals to avoid mistransmission of transmission signals.

[0040] See also Figure 2 、 Figure 4 and Figure 5 According to one embodiment of the present application, the first switching module 30 is provided with a first switching controller RL1, the input end of the first switching controller RL1 is connected to the power supply, the output end of the first switching controller RL1 is connected to the first isolation module 50, the first signal end of the first switching controller RL1 is connected to the network transformer U1, the control end of the first switching controller RL1 is connected to the network transformer U1 through the first resistor module 10, and the second signal end of the first switching controller RL1 is connected to the second network port module U2; through the first resistor module 10 and the first isolation module 50, the control end of the second switching controller RL3 is switched and connected to the first end of the first switching controller RL1 or the first switching module 3 0; the second switching module 40 is provided with a second switching controller RL3, the input end of the second switching controller RL3 being connected to the power supply, the output end of the second switching controller RL3 being connected to the second isolation module 60, the first signal end of the second switching controller RL3 being connected to the network transformer U1, the control end of the second switching controller RL3 being connected to the network transformer U1 via the second resistor module 20, and the second signal end of the second switching controller RL3 being connected to the second network port module U2; through the second resistor module 20 and the second isolation module 60, the control end of the second switching controller RL3 is switched to be connected to the first end of the second switching controller RL3 or the second end of the second switching module 40. This makes the network port switching circuit compatible with both dual-network port signal transmission and single-network port signal transmission, and ensures signal isolation for single-network port signal transmission to avoid mistransmission of transmitted signals.

[0041] See also Figure 6 and Figure 7According to one embodiment of the present application, the first resistance module 10 includes a first signal resistor 11 and a second signal resistor 12, the first signal end of the first switching controller RL1 is input and connected to the network transformer U1 through the first signal resistor 11, and the second signal end of the first switching controller RL1 is output and connected to the network transformer U1 through the second signal resistor 12; the second resistance module 20 includes a third signal resistor 21 and a fourth signal resistor 22, the first signal end of the second switching controller RL3 is input and connected to the network transformer U1 through the third signal resistor 21, and the second signal end of the second switching controller RL3 is output and connected to the network transformer U1 through the fourth signal resistor 22.

[0042] The network transformer U1 is connected to the control input and output of the first switching controller RL1 through the first signal resistor 11 and the second signal resistor 12 respectively, and the network transformer U1 is connected to the control input and output of the second switching controller RL3 through the third signal resistor 21 and the fourth signal resistor 22 respectively.

[0043] See also Figure 4 and Figure 5 According to one embodiment of the present application, the first switching module 30 is further provided with a first diode D1 and a first protection resistor R1. The first diode D1 is connected in parallel with the first switching controller RL1, the anode of the first diode D1 is connected to the output end of the first switching controller RL1, and the cathode of the first diode D1 is connected to the input end of the first switching controller RL1 to form a first common end 31. The first common end 31 is connected to the power supply through the first protection resistor R1; the second switching module 40 is further provided with a second diode D3 and a second protection resistor R34. The second diode D3 is connected in parallel with the second switching controller RL3, the anode of the second diode D3 is connected to the output end of the second switching controller RL3, and the cathode of the second diode D3 is connected to the input end of the second switching controller RL3 to form a second common end 41. The second common end 41 is connected to the power supply through the second protection resistor R34.

[0044] The first diode D1 is used to protect the first switching controller RL1, and the first protection resistor R1 is used to prevent voltage from flowing back into the first switching controller RL1. The second diode D3 is used to protect the second switching controller RL3, and the second protection resistor R34 is used to prevent voltage from flowing back into the second switching controller RL3.

[0045] See also Figure 4 and Figure 5 According to one embodiment of the present application, the first switching controller RL1 has two, Figure 4RL2 and RL1 are both first switching controllers; the first diode D1 is set in one-to-one correspondence with the first switching controller RL1; and / or there are two second switching controllers RL3, and the second diode D3 is set in one-to-one correspondence with the second switching controller RL3, Figure 5 RL4 and RL5 are both second switching controllers.

[0046] A first isolation module 50 corresponds to two first switching controllers RL1, so that the first signal obtained by the first isolation module 50 to the processor is transmitted to the two first switching controllers RL1 respectively, and the transmission line of the first signal is increased. Through the two first switching controllers RL1, one of the transmission lines of the first signal can be transmitted only to the first network port module J1 or the second network port module U2, or the other transmission line of the first signal can be transmitted to the first network port module J1 or the second network port module U2 together; a second isolation module 60 corresponds to two second switching controllers RL3, so that the second signal obtained by the second isolation module 60 to the processor is transmitted to the two second switching controllers RL3 respectively.

[0047] See also Figure 4 and Figure 5 According to one embodiment of the present application, the first isolation module 50 includes a first transistor Q1, a first isolation resistor R19, and a second isolation resistor R16; the collector of the first transistor Q1 is connected to the output end of the first switching controller RL1, one end of the first isolation resistor R19 is connected to the emitter of the first transistor Q1 to form a third common end 51, and the other end of the first isolation resistor R19 is connected to the base of the first transistor Q1 to form a fourth common end 52, and the fourth common end 52 is connected to the processor through the second isolation resistor R16; the second isolation module 60 includes a second transistor transistor Q2, a third isolation resistor R39 and a fourth isolation resistor R37; the collector of the second triode Q2 is connected to the output end of the second switching controller RL3, one end of the third isolation resistor R39 is connected to the emitter of the second triode Q2 to form a fifth common terminal 61, the other end of the fourth isolation resistor R37 is connected to the base of the second triode Q2 to form a sixth common terminal 62, the sixth common terminal 62 is connected to the fourth isolation resistor R37, and the sixth common terminal 62 is connected to the processor through the fourth isolation resistor R37; the third common terminal 51 and the fifth common terminal 61 are both connected to ground.

[0048] A switching circuit is formed by using the first isolation resistor R19, the second isolation resistor R16 and the first transistor Q1, so that the first signal obtained from the processor is transmitted to the first switching controller RL1; a switching circuit is formed by using the second transistor Q2, the third isolation resistor R39 and the fourth isolation resistor R37, so that the second signal obtained from the processor is transmitted to the second switching controller RL3.

[0049] See also Figures 1 to 3 According to an embodiment of the present application, the first signal end of the network transformer U1 is respectively connected to the first signal end of the first resistance module 10 and the first signal end of the first switching controller RL1, the second signal end of the network transformer U1 is respectively connected to the first signal end of the second resistance module 20 and the second signal end of the second switching controller RL3, and the third signal end of the network transformer U1 is connected to the first network port module J1; the first mutual inductance end of the network transformer U1 is respectively connected to the first signal end of the network transformer U1 and the second signal end of the network transformer U1, and the first mutual inductance end of the network transformer U1 is grounded through the first capacitor; the second mutual inductance end of the network transformer U1 is connected to the third signal end of the network transformer U1 The signal terminal, the second mutual inductance terminal of the network transformer U1 is connected to the ground terminal of the first network port module J1 to form a seventh common terminal 70, the seventh common terminal 70 is grounded, and a mutual inductance resistor 71 is provided between the second mutual inductance terminal of the network transformer U1 and the seventh common terminal 70; the first signal terminal of the second network port module U2 is connected to the second signal terminal of the first switching controller RL1, the second signal terminal of the second network port module U2 is connected to the second signal terminal of the second switching controller RL3, the mutual inductance terminal of the second network port module U2 is respectively connected to the first signal terminal of the second network port module U2 and the second signal terminal of the second network port module U2, and the mutual inductance terminal of the second network port module U2 is grounded through the second capacitor.

[0050] The first signal end of the network transformer U1 is connected to the first resistor module 10, so that the first signal end of the network transformer U1 sends a signal to the control end of the first switching module 30 through the first resistor module 10 to control the switching connection of the control end of the first switching module 30. The second signal end of the network transformer U1 is connected to the second resistor module 20, so that the second signal end of the network transformer U1 sends a signal to the control end of the second switching module 40 through the second resistor module 20 to control the switching connection of the control end of the second switching module 40; the first signal end of the network transformer U1 and the second signal end of the network transformer U1 are grounded through the first mutual inductance end of the network transformer U1; the third signal end of the network transformer U1 is connected to the first network port module J1, and the network transformer U1 and the first network port module J1 are grounded.

[0051] See also Figure 1 and Figure 3 According to one embodiment of the present application, a third capacitor CL1 is further provided between the second mutual inductance terminal of the network transformer U1 and the seventh common terminal 70. The third capacitor CL1 is used to enhance the grounding effect of the second mutual inductance terminal of the network transformer U1.

[0052] See also Figure 1 and Figure 3According to one embodiment of the present application, the first network port module J1 is provided with a first connection indication terminal 80 and a first activity indication terminal 81, the first connection indication terminal 80 is connected to the first connection indicator light, the first activity indication terminal 81 is connected to the first activity indicator light, a first indication resistor R9 is provided between the first connection indication terminal 80 and the first connection indicator light, and a second indication resistor R8 is provided between the first activity indication terminal 81 and the first activity indicator light; the second network port module U2 is provided with a second connection indication terminal 90 and a second activity indication terminal 91, the second connection indication terminal 90 is connected to the second connection indicator light, the second activity indication terminal 91 is connected to the second activity indicator light, a third indication resistor R25 is provided between the second connection indication terminal 90 and the second connection indicator light, and a fourth indication resistor R22 is provided between the second activity indication terminal 91 and the second activity indicator light.

[0053] A first connection indicator light is connected through the first connection indication terminal 80, and a first activity indicator light is connected to the first activity indicator light, so that the first connection indicator light and the first activity indicator light prompt the connection and activity status of the first network port module J1, and the first indication resistor R9 is used to protect the line between the first connection indication terminal 80 and the first connection indicator light, and the second indication resistor R8 is used to protect the line between the first activity indication terminal 81 and the first activity indicator light; a second connection indicator light is connected through the second connection indication terminal 90, and a second activity indicator light is connected to the second activity indication terminal 91, so that the second connection indicator light and the second activity indicator light prompt the connection and activity status of the second network port module U2, and the third indication resistor R25 is used to protect the line between the second connection indication terminal 90 and the second connection indicator light, and the fourth indication resistor R22 protects the line between the second activity indication terminal 91 and the second activity indicator light.

[0054] The working principle of a network port switch circuit of the present invention is as follows: the first isolation module 50 obtains the first signal output by the processor, and when the control end of the first switching module 30 is only switched to connect the first end of the first switching module 30, the first signal is transmitted to the first network port module J1 through the network transformer U1; when the control end of the first switching module 30 is only switched to connect the second end of the first switching module 30, the first signal is transmitted to the second network port module U2; when the control end of the first switching module 30 is simultaneously switched to connect the first end of the first switching module 30 and the second end of the first switching module 30, the first network port module J1 and the second network port module U2 are both transmitted to the first signal; the second isolation module 60 obtains the second signal output by the processor, and when the second switching module The control end of the module 40 is only switched to connect to the first end of the second switching module 40, so that the second signal is transmitted to the first network port module J1 through the network transformer U1. When the control end of the second switching module 40 is only switched to connect to the second end of the second switching module 40, the second signal is transmitted to the second network port module U2. When the control end of the second switching module 40 is simultaneously switched to connect to the first end of the second switching module 40 and the second end of the second switching module 40, the first network port module J1 and the second network port module U2 are both transmitted to the second signal; so that the network port switch circuit is compatible with both dual-network port transmission of signals and single-network port transmission of signals; when the control end of the first switching module 30 is only switched to connect to the first end of the first switching module 30, the network is used to connect to the first end of the first switching module 30. The transformer U1 sends a modulation signal to the first resistance module 10, so that the control end of the first switching module 30 cannot be connected to the second end of the first switching module 30. When the control end of the first switching module 30 is only switched to connect to the second end of the first switching module 30, the network transformer U1 is used to send a modulation signal to the first resistance module 10, so that the control end of the first switching module 30 cannot be connected to the first end of the first switching module 30, ensuring the signal isolation of the single network port transmission of the first signal, and preventing the first signal from being mistakenly transmitted to a non-designated network port; when the control end of the second switching module 40 is only switched to connect to the first end of the second switching module 40, the network transformer U1 is used to send a modulation signal to the second resistance module 20, so that the control end of the second switching module 40 The second end of the second switching module 40 cannot be connected. When the control end of the second switching module 40 is only switched to connect to the second end of the second switching module 40, the network transformer U1 is used to send a modulation signal to the second resistor module 20, so that the control end of the second switching module 40 cannot be connected to the first end of the second switching module 40, ensuring the signal isolation of the single network port transmission of the second signal, and preventing the second signal from being mistakenly transmitted to a non-designated network port; using the first isolation module 50, the second isolation module 60, the first switching module 30, the second switching module 40, the first resistor module 10, the second resistor module 20 and the network transformer U1, when realizing single network port transmission of the signal, dual network port transmission of the signal can also be realized, broadening the scope of use of the network port switch circuit;In this way, the network port switch circuit is compatible with both dual-port signal transmission and single-port signal transmission, and ensures signal isolation of the single-port signal transmission to avoid mistransmission of the transmission signal.

[0055] Another technical solution adopted in the present application is: a storage unit, including the above-mentioned network port switch circuit.

[0056] The above is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, is also included in the patent protection scope of the present invention.

Claims

1. A network port switch circuit, characterized in that: include: A network transformer, a first network port module, a second network port module, a first resistor module, a second resistor module, a first switching module, a second switching module, a first isolation module, and a second isolation module; The first isolation module is connected to the first switching module, and the control end of the first switching module is connected to the network transformer through the first resistance module, so as to control the control end of the first switching module to switch between the first end of the first switching module or the second end of the first switching module; The second isolation module is connected to the second switching module, and the control end of the second switching module is connected to the network transformer through the second resistance module, so as to control the control end of the second switching module to switch between the first end of the second switching module or the second end of the second switching module; The first end of the first switching module and the first end of the second switching module are both connected to the first network port module through the network transformer, and the second end of the second switching module and the second end of the second switching module are both connected to the second network port module.

2. The network port switch circuit according to claim 1, characterized in that: The first switching module is provided with a first switching controller, wherein the input end of the first switching controller is connected to the power supply, the output end of the first switching controller is connected to the first isolation module, the first signal end of the first switching controller is connected to the network transformer, the control end of the first switching controller is connected to the network transformer via the first resistor module, and the second signal end of the first switching controller is connected to the second network port module; through the first resistor module and the first isolation module, the control end of the first switching controller is switched to be connected to the first end of the first switching controller or the second end of the first switching module; The second switching module is provided with a second switching controller, the input end of the second switching controller is connected to the power supply, the output end of the second switching controller is connected to the second isolation module, the first signal end of the second switching controller is connected to the network transformer, the control end of the second switching controller is connected to the network transformer through the second resistance module, and the second signal end of the second switching controller is connected to the second network port module; through the second resistance module and the second isolation module, the control end of the second switching controller is switched and connected to the first end of the second switching controller or the second end of the second switching module.

3. The network port switch circuit according to claim 2, characterized in that: The first resistor module includes a first signal resistor and a second signal resistor, the first signal end of the first switching controller is connected to the network transformer through the first signal resistor input, and the second signal end of the first switching controller is connected to the network transformer through the second signal resistor output; The second resistor module includes a third signal resistor and a fourth signal resistor. The first signal end of the second switching controller is connected to the network transformer through the third signal resistor input, and the second signal end of the second switching controller is connected to the network transformer through the fourth signal resistor output.

4. The network port switch circuit according to any one of claims 2 to 3, characterized in that: The first switching module is further provided with a first diode and a first protective resistor. The first diode is connected in parallel with the first switching controller. The anode of the first diode is connected to the output terminal of the first switching controller, and the cathode of the first diode is connected to the input terminal of the first switching controller to form a first common terminal. The first common terminal is connected to a power supply through the first protective resistor. The second switching module is also provided with a second diode and a second protection resistor. The second diode is connected in parallel with the second switching controller. The anode of the second diode is connected to the output end of the second switching controller, and the cathode of the second diode is connected to the input end of the second switching controller to form a second common end. The second common end is connected to the power supply through the second protection resistor.

5. The network port switch circuit according to claim 4, characterized in that: There are two first switching controllers, and the first diodes are arranged in a one-to-one correspondence with the first switching controllers; And / or two second switching controllers are provided, and the second diodes are arranged in a one-to-one correspondence with the second switching controllers.

6. The network port switch circuit according to claim 4, characterized in that: The first isolation module includes a first transistor, a first isolation resistor, and a second isolation resistor; the collector of the first transistor is connected to the output end of the first switching controller, one end of the first isolation resistor is connected to the emitter of the first transistor to form a third common end, the other end of the first isolation resistor is connected to the base of the first transistor to form a fourth common end, and the fourth common end is connected to the processor through the second isolation resistor; The second isolation module includes a second transistor, a third isolation resistor and a fourth isolation resistor; the collector of the second transistor is connected to the output end of the second switching controller, one end of the third isolation resistor is connected to the emitter of the second transistor to form a fifth common end, the other end of the fourth isolation resistor is connected to the base of the second transistor to form a sixth common end, the sixth common end is connected to the fourth isolation resistor, and the sixth common end is connected to the processor through the fourth isolation resistor; The third common terminal and the fifth common terminal are both connected to the ground.

7. The network port switch circuit according to claim 4, characterized in that: The first signal end of the network transformer is connected to the first signal end of the first resistance module and the first signal end of the first switching controller respectively, the second signal end of the network transformer is connected to the second resistance module and the first signal end of the second switching controller respectively, and the third signal end of the network transformer is connected to the first network port module; The first mutual inductance terminal of the network transformer is respectively connected to the first signal terminal of the network transformer and the second signal terminal of the network transformer, and the first mutual inductance terminal of the network transformer is grounded through a first capacitor; The second mutual inductance terminal of the network transformer is connected to the third signal terminal of the network transformer, the second mutual inductance terminal of the network transformer is connected to the ground terminal of the first network port module to form a seventh common terminal, the seventh common terminal is grounded, and a mutual inductance resistor is provided between the second mutual inductance terminal of the network transformer and the seventh common terminal; The first signal end of the second network port module is connected to the second signal end of the first switching controller, the second signal end of the second network port module is connected to the second signal end of the second switching controller, the mutual inductance end of the second network port module is respectively connected to the first signal end of the second network port module and the second signal end of the second network port module, and the mutual inductance end of the second network port module is grounded through a second capacitor.

8. The network port switch circuit according to claim 7, characterized in that: A third capacitor is further provided between the second mutual inductance terminal of the network transformer and the seventh common terminal.

9. The network port switch circuit according to any one of claims 1 to 3, characterized in that: The first network port module is provided with a first connection indication terminal and a first activity indication terminal, the first connection indication terminal is connected to a first connection indicator light, the first activity indication terminal is connected to a first activity indicator light, a first indication resistor is provided between the first connection indication terminal and the first connection indicator light, and a second indication resistor is provided between the first activity indication terminal and the first activity indicator light; The second network port module is provided with a second connection indication terminal and a second activity indication terminal, the second connection indication terminal is connected to a second connection indicator light, the second activity indication terminal is connected to a second activity indicator light, a third indication resistor is provided between the second connection indication terminal and the second connection indicator light, and a fourth indication resistor is provided between the second activity indication terminal and the second activity indicator light.

10. A storage unit, characterized in that: The network port switch circuit comprises the network port switch circuit according to any one of claims 1 to 9.

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