Network connection and disconnection and alarm device

Abstract

The utility model provides a network crossing and disconnection and alarm device which is deployed at an external network entrance side, a UDP probe transceiver module receives a UDP detection feedback signal of a UDP probe module deployed at one side of an internal private network and transmits the UDP detection feedback signal to a logic control module, and a Ping detection module group transmits a Ping detection feedback signal to the logic control module; the logic control module is connected with the upper computer, transmits a corresponding detection feedback signal to the upper computer and returns a network on-off signal and an alarm indication; the data exchange module group comprises an inlet wire switch and an outlet wire switch which are respectively connected with the logic control module to form a complete external network path, and the logic control module controls the connection contact of the logic control module and the inlet wire switch and the connection contact of the logic control module and the outlet wire switch to be opened and closed according to network on-off signals. An external network entrance is quickly cut off, network crossing influence is reduced, and internal private network security is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of network communication, and mainly relates to a network disconnection and alarm device. Background Art

[0002] In order to protect the internal secrets of the unit, many units have set up their own internal private networks, such as the public security information network, public security video network and other professional police network currently used by the public security organs. In order to ensure public safety and maintain social order, these internal private network corresponding systems have the characteristics of strong confidentiality and strict control, and are used to process sensitive information and key data. The external network environment is open. Once the internal private network and the external network are connected, they will face various security threats, such as hacker attacks, virus transmission, information leakage and other problems. Once the internal information of the unit is leaked, it may lead to serious consequences, including criminals using this information to carry out criminal activities and citizens' privacy being violated. Therefore, for units with internal private networks, it is very important to maintain the independence and security of the internal private network.

[0003] However, in daily work, due to negligence of staff, there are often incidents of mistakenly connecting the internal private network and the external network. The current network security mechanism is to scan through security equipment. After discovering the internal private network and the external network are connected, an alarm is issued to notify the responsible unit to handle it. The responsible personnel then rush to the unit to disconnect the external network and eliminate the connection point. In this process, the responsible unit cannot disconnect the external network as soon as the connection occurs. During this period, the connection time is long, and the network information security risks are great. In order to strengthen the security management of the internal private network of the unit and avoid the occurrence of "illegal external connection" and "one machine for two uses" incidents, units with internal private networks are in urgent need of a device that can quickly detect the connection and quickly and automatically disconnect the external network, providing an important "safety bottom" device for the network information security of the internal private network after the connection. Utility Model Content

[0004] In order to solve the above problems existing in the prior art, the utility model provides a network disconnection and alarm device, and the technical solution of the utility model is as follows:

[0005] A network disconnection and alarm device is deployed at the external network entrance side, including a logic control module, a UDP probe transceiver module, a Ping detection module group, a data exchange module group and an alarm module, wherein:

[0006] The UDP probe transceiver module is respectively connected to the UDP probe module and the logic control module for two-way communication, and is used to receive the UDP detection feedback signal of the UDP probe module deployed on one side of the internal private network and transmit it to the logic control module. The UDP probe transceiver module also receives the network on / off signal and alarm indication returned by the logic control module, and returns the network on / off signal and alarm indication to the UDP probe module;

[0007] The Ping detection module group is communicatively connected with the logic control module, and is used to transmit the Ping detection feedback signal to the logic control module;

[0008] The logic control module is connected to the host computer for communication, transmits the UDP detection feedback signal and the Ping detection feedback signal to the host computer, and returns the network on / off signal and the alarm indication to the logic control module;

[0009] The data exchange module group includes an incoming switch and an outgoing switch of the external network, the incoming switch and the outgoing switch are respectively connected to the logic control module to form a complete external network path, and the logic control module controls the opening and closing of the connection contacts between the logic control module and the incoming switch and the connection contacts between the logic control module and the outgoing switch according to the network on-off signal, thereby controlling the on-off of the external network;

[0010] The alarm module is used to receive the alarm indication from the logic control module and perform an alarm operation according to the alarm indication.

[0011] As a preferred embodiment of the utility model, the network disconnection and alarm device also includes a test button corresponding to the UDP probe transceiver module and the Ping detection module group, and the test button is used to activate the UDP probe transceiver module and the Ping detection module group to perform detection actions.

[0012] As a preferred embodiment of the utility model, the UDP probe transceiver module includes corresponding relays and network status indicators, the relay ports are udp NO, udp COM and udp NC, and the network status indicator includes an In input port and a 3.3V port; when the UDP probe transceiver module receives the UDP detection feedback signal of the UDP probe module, through the connection of udp NO with the input port of the logic control module, udp NO is closed, and the UDP detection feedback signal is transmitted to the version logic control module;

[0013] The UDP probe module includes corresponding relays and network status indicators. The relay ports are UDP NO, UDP COM and UDP NC. The UDP probe module is deployed on the corresponding circuit board and also includes a power supply, a buzzer and a power light. When the network on / off signal and the alarm indication are returned to the UDP probe module, the UDP NO is closed through the connection between the UDP NO and the buzzer, and the buzzer performs an alarm action according to the alarm indication.

[0014] As a preferred implementation of the utility model, the logic control module includes 12 in input ports, and the 12 in input ports are in1, in2, in3, in4, in5, in6, in7, in8, in9, in10, in11 and in12, wherein:

[0015] The probe transceiver module transmits the UDP detection feedback signal to the logic control module through the connection between udp NO and the logic control module in1;

[0016] The Ping detection module group includes 5 Ping modules, namely ping1, ping2, ping3, ping4 and ping5. The Ping module is connected to in3 through the ping1 module, the ping2 module is connected to in4, the ping3 module is connected to in5, the ping4 module is connected to in6, and the ping5 module is connected to in7, and the Ping detection feedback signal is transmitted to the logic control module.

[0017] As a preferred implementation manner of the utility model, the logic control module includes 12 out output ports, and the 12 out output ports are out1, out2, out3, out4, out5, out6, out7, out8, out9, out10, out11 and out12, each output port corresponds to a relay, and the relay includes three ports of NO, COM and NC, and the corresponding relay ports are expressed as out1 NC, out1 COM, out1NO, out2 NC, out2 COM, out2 NO, out3 NC, out3COM, out3 NO, out4 NC, out4 COM, out4 NO, out5 NC, out5 COM, out5 NO, out6 NC, out6COM, out6NO, out7 NC, out7 COM, out7 NO, out8 NC, out8 COM, out8 NO, out9 NC, out9COM, out9 NO, out10 NC, out10 COM, out10 NO, out11 NC, out11 COM, out11 NO, NO, out12 NC, out12 COM, out12 NO, where:

[0018] The connection contacts between the incoming switch and the logic control module correspond to out1 COM and out2 COM, out1NC is connected to out3 COM, out2 NC is connected to out4 COM, and the connection contacts between the outgoing switch and the logic control module correspond to out3NC and out4 NC.

[0019] As a preferred embodiment of the utility model, the alarm module includes a buzzer and an LED light, the buzzer is connected to out8 NO, and is used to receive an alarm indication and perform an alarm action; the LED light includes an LED light corresponding to the Ping module, an LED light corresponding to the UDP probe transceiver module, an LED light corresponding to the reset, and a power LED light, wherein:

[0020] The LED lights corresponding to the Ping modules include LED lights corresponding to each Ping module, namely ping1 led, ping2 led, ping3 led, ping4 led and ping5 led, which are used to display the network status of the Ping corresponding network;

[0021] The LED light corresponding to the UDP probe transceiver module is represented as UDP LED, which is used to display the network status of the UDP detection network;

[0022] The reset corresponding LED lights include Ping rest LED and udp rest LED, which are used to indicate whether the Ping module and UDP probe transceiver module are reset.

[0023] As a preferred embodiment of the utility model, both the incoming switch and the outgoing switch are provided with SFP modules, and the network data of the incoming switch and the outgoing switch are transmitted from the incoming switch to the outgoing switch through optical fiber communication via the SFP modules.

[0024] As a preferred embodiment of the utility model, the serial network disconnection and alarm device also includes a power adapter. The logic control module, UDP probe transceiver module, Ping detection module group, data exchange module group and alarm module included in the serial network disconnection and alarm device are all provided with a power interface. The power interface is correspondingly connected to the power adapter. The power adapter provides power for the entire device and displays whether power is supplied through the power LED light.

[0025] As a preferred embodiment of the utility model, the serial network disconnection and alarm device also includes a reset button, the reset button is connected to out5 NC, out5 COM is connected to in2, when the reset button is pressed, out5 NC connection is disconnected, out5 COM transmits a reset signal to the logic control module through the connection with in2, and the logic control module controls the data exchange module group and the logic control module connection to reset.

[0026] As a preferred embodiment of the utility model, the serial network disconnection and alarm device is correspondingly configured with an analog serial network detector, and the analog serial network detector includes a UDP probe module and a UDP probe transceiver module, wherein:

[0027] The UDP probe module of the simulated serial network detector is connected to the UDP probe transceiver module of the serial network disconnection and alarm device. The UDP probe transceiver module of the simulated serial network detector is connected to the UDP probe module of the serial network disconnection and alarm device corresponding to the UDP probe module deployed in the internal private network. The two ends of the simulated serial network detector are respectively connected to the external network and the internal private network, and the simulated serial network detection is performed by triggering each other through switch quantities.

[0028] Compared with the prior art, the beneficial effects of the utility model are:

[0029] The utility model is a network disconnection and alarm device, which is deployed at the entrance side of the external network, including a logic control module, a UDP probe transceiver module, a Ping detection module group, a data exchange module group and an alarm module. The Ping detection module group includes 5 Ping modules, which can synchronously detect 5 networks in an internal private network; the UDP probe transceiver module transmits the UDP detection feedback signal of the UDP probe module deployed in the internal private network to the logic control module, and the Ping detection module group transmits the Ping detection feedback signal to the logic control module. The logic control module is connected to the upper computer for communication. The UDP detection feedback signal and the Ping detection feedback signal are transmitted to the host computer and the network on / off signal and the alarm indication are returned; the data exchange module group includes an incoming switch and an outgoing switch of the external network, and the incoming switch and the outgoing switch are respectively connected to the logic control module to form a complete external network path. The logic control module controls the opening and closing of the connection contacts between the logic control module and the incoming switch and the connection contacts between the logic control module and the outgoing switch according to the network on / off signal. The above connection method can quickly cut off the external network entrance, reduce the impact after the network is connected, and ensure the security of other internal private networks such as the public security information network. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a wiring diagram of a network disconnection and alarm device according to an embodiment of the utility model;

[0031] Figure 2 This is a wiring diagram of a UDP probe module according to an embodiment of the utility model;

[0032] Figure 3 This is a wiring diagram of a simulated series network detector according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] Embodiment 1

[0035] In this embodiment, the public security organs are taken as units with internal private networks. The public security organs involve external networks and internal private networks in their daily work. In this embodiment, the internal private networks specifically include public security information networks, public security video networks, government affairs networks, smart networks, and police-specific networks. Because there are many networks involved and the operating environment is complex, in actual work, public security networks are often connected due to police officers, staff, construction and maintenance personnel accidentally plugging in the wrong network cables, which may lead to the leakage of police secrets. A network disconnection and alarm device is urgently needed to prevent network connection.

[0036] like Figure 1 As shown, Figure 1 The serial numbers with the same color and the same digital size indicate that the ports where the serial numbers are located are connected to each other. The utility model provides the following technical solutions: a serial network disconnection and alarm device, deployed at the external network incoming line end, including a logic control module, a UDP probe transceiver module, a Ping detection module group, a data exchange module group and an alarm module, wherein:

[0037] S1, logic control module;

[0038] In this embodiment, TCP-KP-I12O12 is selected as the logic control module, including 12 in input ports, 12 out output ports, GND ground connection point, VCC power connection point and AB interface (Allen-Bradley interface), specifically:

[0039] The 12 in input ports are in1, in2, in3, in4, in5, in6, in7, in8, in9, in10, in11 and in12, and the input ports are used to receive signals from external sensors or other devices for processing and control logic operations;

[0040] The 12 out output ports are out1, out2, out3, out4, out5, out6, out7, out8, out9, out10, out11 and out12, each output port corresponds to a relay, and the relay includes three ports: NO (Normally Open), COM (Common) and NC (Normally Closed). Based on the corresponding relationship, the 12 out output ports are further expressed as out1NC, out1 COM, out1NO, out2 NC, out2 COM, out2 NO, out3 NC, out3 COM, out3 NO, out4 NC, out4 COM, out4 NO, out5 NC, out5 COM, out5 NO, out6NC, out6 COM, out6 NO, out7 NC, out7 COM, out7 NO, out8 NC, out8 COM, out8 NO, out9 NC, out9 COM, out9 NO, out10 NC, out10 COM, out10 NO NO, out11 NC, out11 COM, out11NO, out12 NC, out12 COM, out12 NO, the logic control module controls the external devices connected to each relay through each output terminal;

[0041] The AB interface (Allen-Bradley interface) is used to connect the logic control module and other devices. In this embodiment, when the logic control module uses the Allen-Bradley interface to connect with other devices, the RS485 serial communication standard is used, that is, the Allen-Bradley interface is used to communicate with the device supporting the RS485 communication protocol; further, in this embodiment, the UDP detection feedback signal and the Ping detection feedback signal are transmitted to the host computer through the AB interface to perform network connection judgment and return the network on-off signal to the logic control module;

[0042] S2, UDP probe module and UDP probe module transceiver module;

[0043] In this embodiment, TCP-KP-LC1A is selected as the UDP probe module and the UDP probe transceiver module, where:

[0044] The UDP probe module is deployed on the internal private network side. Figure 2 As shown, Figure 2The serial numbers with the same color and the same numerical size indicate that the ports where the serial numbers are located are connected to each other. The UDP probe module includes a corresponding relay and a network status indicator. The relay ports are UDP NO, UDP COM and UDP NC. The UDP probe module is deployed on a corresponding circuit board and also includes a power supply, a buzzer and a power light. The UDP probe module actively and continuously sends a UDP detection feedback signal through a broadcast mechanism.

[0045] The UDP probe transceiver module is used to receive the UDP detection feedback signal, including a corresponding relay and a network status indicator, the relay port is further represented as udp NO, udp COM and udp NC, the network status indicator includes an In input port and a 3.3V port, and the input port of the probe transceiver module is further represented as udp In; when the external network and the internal private network are connected, the UDP probe transceiver module receives the UDP detection feedback signal, and through the connection of udp NO with the input port of the logic control module, udp NO is closed, and the UDP detection feedback signal is transmitted to the version logic control module;

[0046] The UDP probe transceiver module also receives the network on / off signal and alarm indication returned by the logic control module, specifically, the udp In receives the network on / off signal and alarm indication output by out8 NO through a 1kΩ resistor;

[0047] The UDP probe transceiver module returns the network on / off signal and the alarm indication to the UDP probe module. The UDP probe module is connected to the buzzer via the UDP NO. When the UDP NO is closed, the buzzer performs an alarm action according to the alarm indication.

[0048] Furthermore, the UDP probe module corresponds to a test button, represented as udp test, and the test button is connected to udp NO to activate the UDP probe transceiver module to perform a detection action;

[0049] S3, Ping detection module group;

[0050] In this embodiment, the Ping detection module group includes 5 Ping modules, including ping1, ping2, ping3, ping4 and ping5, which can test 5 networks. Preferably, the Ping modules can be increased or decreased according to the number of internal private networks, and the Ping detection module group can be set according to actual needs;

[0051] Each of the Ping modules corresponds to a relay, and the relay includes three ports: NC, COM, and NO, which are further represented as ping1 NC, ping1 COM, ping1 NO, ping2 NC, ping2 COM, ping2 NO, ping3 NC, ping3 COM, ping3 NO, ping4 NC, ping4 COM, ping4 NO, ping5 NC, ping5 COM, ping5 NO according to the corresponding relationship;

[0052] Furthermore, the Ping modules each correspond to a test button, represented as ping1 test, ping2test, ping3 test, ping4 test and ping5 test, and the test buttons are respectively connected to ping1 NO, ping2 NO, ping3NO, ping4 NO and ping5 NO. When the test button is pressed, the Ping module and the internal private network gateway are preset with fixed messages, and the Ping module continuously sends signals to the internal private network gateway to perform detection actions, and transmits the Ping detection feedback signal to the logic control module through the connection with the input port of the logic control module, wherein the ping1 module is connected to in3, the ping2 module is connected to in4, the ping3 module is connected to in5, the ping4 module is connected to in6, and the ping5 module is connected to in7;

[0053] S4, data exchange module group;

[0054] The data exchange module group includes an incoming switch and an outgoing switch, wherein the incoming switch and the outgoing switch are provided with SFP modules, and network data is transmitted from the incoming switch to the outgoing switch through optical fiber communication via the SFP modules, and finally reaches the target device;

[0055] Furthermore, the incoming switch and the outgoing switch also include an RJ45 Ethernet interface for communication between the switch and the logic control module; the logic control module controls the opening and closing of the connection contacts between the logic control module and the incoming switch and the connection contacts between the logic control module and the outgoing switch, and controls the on-off of the external network, that is, the logic control module performs on-off control of the corresponding relays of out1, out2, out3 and out4 according to the network on-off signal returned by the host computer, and completes the on-off of the network between the incoming switch and the outgoing switch;

[0056] Furthermore, the incoming switch is connected to the logic control module via RJ45-1, the contact between RJ45-1 and the logic control module corresponds to out2 COM, out2 NC is connected to out4 COM, and out2 NC is the corresponding contact between the outgoing switch and the logic control module via RJ45-1;

[0057] The incoming switch is connected to the logic control module via RJ45-2, the contact between RJ45-2 and the logic control module corresponds to out1 COM, out1 NC is connected to out3 COM, and out3 NC is the corresponding contact between the outgoing switch and the logic control module via RJ45-2;

[0058] S5, alarm module;

[0059] The alarm module includes a buzzer and an LED light, wherein the buzzer is connected to out8 NO and is used to receive an alarm indication and perform an alarm action; the LED light includes an LED light corresponding to the Ping module, an LED light corresponding to the UDP probe transceiver module, an LED light corresponding to the reset, and a power LED light, wherein:

[0060] The LED lights corresponding to the Ping modules include LED lights corresponding to each Ping module, namely ping1 led, ping2 led, ping3 led, ping4 led and ping5 led, which are used to display the network status of the Ping corresponding network;

[0061] The LED light corresponding to the UDP probe transceiver module is represented as UDP LED, which is used to display the network status of the UDP detection network;

[0062] The reset corresponding LED lights include Ping rest LED and udp rest LED, which are used to indicate whether the Ping module and UDP probe transceiver module are reset;

[0063] S6. The serial network disconnection and alarm device further comprises a power adapter. The logic control module, UDP probe transceiver module, Ping detection module group, data exchange module group and alarm module included in the serial network disconnection and alarm device are all provided with a power interface, and the power interface is correspondingly connected to the power adapter. In this embodiment, the power adapter is used to convert the 220V voltage into a 12V voltage to provide power for the entire device, and display whether power is supplied through the power LED light;

[0064] S7, the network disconnection and alarm device further comprises a reset button, which is a manual button connected to out5 NC, and out5 COM is connected to in2. When the reset button is pressed, out5 NC is disconnected, and out5 COM transmits a reset signal to the logic control module through the connection with in2, and the logic control module controls the data exchange module group to reset the connection with the logic control module;

[0065] Furthermore, in1, in3, in4, in5, in6 and in7 are input into in9 after passing through a diode. When the network on / off signals returned after the UDP detection feedback signal and the Ping detection feedback signal are transmitted to the host computer are both off, a reset is performed;

[0066] Furthermore, when the external network and the internal private network are interconnected, pressing the reset button will not perform the reset operation;

[0067] S8, the network disconnection and alarm device further includes a fan for dissipating heat from the device;

[0068] The working principle of the utility model is specifically as follows:

[0069] The network disconnection and alarm device is deployed at the external network entrance side, including a logic control module, a UDP probe transceiver module, a Ping detection module group, a data exchange module group and an alarm module;

[0070] The UDP probe module deployed on one side of the internal private network actively and continuously sends UDP detection feedback signals to the UDP probe transceiver module. When the external network and the internal private network are interconnected, the UDP probe transceiver module transmits the UDP detection feedback signal to the logic control module; the Ping detection module group detects the internal private network gateway and sends a Ping detection feedback signal to the logic control module; the logic control module communicates with the host computer, and determines whether the internal private network and the external network are interconnected according to the UDP detection feedback signal and the Ping detection feedback signal, and returns a network on-off signal and an alarm indication. The logic control module controls the opening and closing of the relay according to the network power-on signal to complete the on-off of the external network, and sends a buzzer warning through the buzzer according to the alarm indication until the alarm is automatically lifted after the interconnection is eliminated;

[0071] Embodiment 2

[0072] The serial network disconnection and alarm device should be regularly maintained to ensure that the serial network disconnection and alarm device can correctly perform the action after the serial network disconnection. Since the serial network disconnection and alarm device is installed at the external network end, and the probe is installed at the internal private network, the devices at both ends can be connected only after the network is serially connected, and the serial network disconnection and alarm device performs the disconnection action. This embodiment provides a simulated serial network detector, such as Figure 3 As shown, Figure 3The serial numbers with the same color and the same digital size indicate that the ports where the serial numbers are located are connected to each other. The simulated serial network detector is used to simulate the serial network failure situation to test the performance of the serial network disconnection and alarm device;

[0073] The analog serial network detector comprises a UDP probe module and a UDP probe transceiver module, the relay NO end of the UDP probe module of the analog serial network detector is connected to the In input port of the UDP probe transceiver module of the analog serial network detector through a 1kΩ resistor, the UDP probe module of the analog serial network detector is connected to the UDP probe transceiver module of the serial network disconnection and alarm device, the UDP probe transceiver module of the analog serial network detector is connected to the UDP probe module of the serial network disconnection and alarm device corresponding to the UDP probe module deployed in the internal private network, the analog serial network detector also comprises a test button, the test button is connected to the In port of the UDP probe module of the analog serial network detector through a 1kΩ resistor, and is also connected to the NO port of the relay of the UDP probe module of the analog serial network detector;

[0074] The two ends of the simulated serial network detector are connected to the external network and the internal private network respectively. No network signal is transmitted between the network ports. Only the switch quantities trigger each other to perform simulated serial network detection, which will not cause real serial network. Different networks can be safely inserted for simulated detection.

[0075] The analog string network detector also includes a buzzer, which is connected to the NO of the UDP probe module of the analog string network detector for string network alarm;

[0076] The analog serial network detector also includes a power module for providing power to the detector. In this embodiment, the power module includes a 9V battery, a booster, a voltmeter and a power switch button, wherein the booster is used to increase the 9V battery to 12V, and the voltmeter is used to measure the voltage value currently provided by the power module to ensure that the circuit works properly. The power switch button is used to control the switch state of the power module, so as to facilitate the start and stop of the power supply.

[0077] It is worth mentioning that Figure 1 , Figure 2 and Figure 3 The sequence numbers are not related, that is, Figure 1 and Figure 2 The ports with the same color and the same number are not connected, for example Figure 1 The green ③ corresponds to the port Figure 2 The green ③ corresponding port is not connected. Figure 1 and Figure 3 , Figure 2 and Figure 3 Same reason.

[0078] The above description is only an 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 specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A network disconnection and alarm device, deployed at the external network entrance side, characterized in that: It includes a logic control module, a UDP probe transceiver module, a Ping detection module group, a data exchange module group and an alarm module, among which: The UDP probe transceiver module is respectively connected to the UDP probe module and the logic control module for two-way communication, and is used to receive the UDP detection feedback signal of the UDP probe module deployed on one side of the internal private network and transmit it to the logic control module. The UDP probe transceiver module also receives the network on / off signal and alarm indication returned by the logic control module, and returns the network on / off signal and alarm indication to the UDP probe module; The Ping detection module group is communicatively connected with the logic control module, and is used to transmit the Ping detection feedback signal to the logic control module; The logic control module is connected to the host computer for communication, transmits the UDP detection feedback signal and the Ping detection feedback signal to the host computer, and returns the network on / off signal and the alarm indication to the logic control module; The data exchange module group includes an incoming switch and an outgoing switch of the external network, the incoming switch and the outgoing switch are respectively connected to the logic control module to form a complete external network path, and the logic control module controls the opening and closing of the connection contacts between the logic control module and the incoming switch and the connection contacts between the logic control module and the outgoing switch according to the network on-off signal, thereby controlling the on-off of the external network; The alarm module is used to receive the alarm indication from the logic control module and perform an alarm operation according to the alarm indication.

2. A network disconnection and alarm device according to claim 1, characterized in that: The network disconnection and alarm device also includes a test button corresponding to the UDP probe transceiver module and the Ping detection module group, and the test button is used to activate the UDP probe transceiver module and the Ping detection module group to perform detection actions.

3. A network disconnection and alarm device according to claim 2, characterized in that: The UDP probe transceiver module includes corresponding relays and network status indicators, the relay ports are udp NO, udp COM and udp NC, and the network status indicator includes an In input port and a 3.3V port; when the UDP probe transceiver module receives the UDP detection feedback signal of the UDP probe module, through the connection of udp NO with the input port of the logic control module, udp NO is closed, and the UDP detection feedback signal is transmitted to the version logic control module; The UDP probe module includes corresponding relays and network status indicators. The relay ports are UDP NO, UDPCOM and UDP NC. The UDP probe module is deployed on the corresponding circuit board and also includes a power supply, a buzzer and a power light. When the network on / off signal and the alarm indication are returned to the UDP probe module, the UDP NO is closed through the connection between the UDP NO and the buzzer, and the buzzer performs an alarm action according to the alarm indication.

4. A network disconnection and alarm device according to claim 3, characterized in that: The logic control module includes 12 in input ports, wherein the 12 in input ports are in1, in2, in3, in4, in5, in6, in7, in8, in9, in10, in11 and in12, wherein: The probe transceiver module transmits the UDP detection feedback signal to the logic control module through the connection between udp NO and the logic control module in1; The Ping detection module group includes 5 Ping modules, namely ping1, ping2, ping3, ping4 and ping5. The Ping module is connected to in3 through the ping1 module, the ping2 module is connected to in4, the ping3 module is connected to in5, the ping4 module is connected to in6, and the ping5 module is connected to in7, and the Ping detection feedback signal is transmitted to the logic control module.

5. A network disconnection and alarm device according to claim 4, characterized in that: The logic control module includes 12 out output ports, and the 12 out output ports are out1, out2, out3, out4, out5, out6, out7, out8, out9, out10, out11 and out12, each output port corresponds to a relay, and the relay includes three ports of NO, COM and NC, and the corresponding relay ports are expressed as out1 NC, out1 COM, out1NO, out2 NC, out2COM, out2 NO, out3NC, out3 COM, out3 NO, out4 NC, out4 COM, out4 NO, out5 NC, out5COM, out5 NO, out6 NC, out6 COM, out6 NO, out7 NC, out7 COM, out7 NO, out8NC, out8COM, out8 NO, out9 NC, out9 COM, out9 NO, out10 NC, out10 COM, out10 NO, out11 NC, out11 COM, out11 NO, out12 NC, out12 COM, out12 NO, where: The connection contacts between the incoming switch and the logic control module correspond to out1 COM and out2 COM, out1NC is connected to out3COM, out2 NC is connected to out4 COM, and the connection contacts between the outgoing switch and the logic control module correspond to out3 NC and out4 NC.

6. A network disconnection and alarm device according to claim 5, characterized in that: The alarm module includes a buzzer and an LED light. The buzzer is connected to out8 NO and is used to receive an alarm indication and perform an alarm action. The LED light includes an LED light corresponding to the Ping module, an LED light corresponding to the UDP probe transceiver module, an LED light corresponding to the reset, and a power LED light, wherein: The LED lights corresponding to the Ping modules include LED lights corresponding to each Ping module, namely ping1 led, ping2 led, ping3 led, ping4 led and ping5 led, which are used to display the network status of the Ping corresponding network; The LED light corresponding to the UDP probe transceiver module is represented as UDP LED, which is used to display the network status of the UDP detection network; The reset corresponding LED lights include Ping rest LED and udp rest LED, which are used to indicate whether the Ping module and UDP probe transceiver module are reset.

7. A network disconnection and alarm device according to claim 6, characterized in that: Both the incoming switch and the outgoing switch are provided with SFP modules, and the network data of the incoming switch and the outgoing switch are transmitted from the incoming switch to the outgoing switch through optical fiber communication via the SFP modules.

8. A network disconnection and alarm device according to claim 7, characterized in that: The serial network disconnection and alarm device also includes a power adapter. The logic control module, UDP probe transceiver module, Ping detection module group, data exchange module group and alarm module contained in the serial network disconnection and alarm device are all provided with a power interface. The power interface is correspondingly connected to the power adapter. The power adapter provides power for the entire device and displays whether it is powered by the power LED light.

9. A network disconnection and alarm device according to claim 8, characterized in that: The serial network disconnection and alarm device also includes a reset button, which is connected to out5 NC, and out5 COM is connected to in2. When the reset button is pressed, the out5 NC connection is disconnected, and out5 COM transmits a reset signal to the logic control module through the connection with in2. The logic control module controls the data exchange module group and the logic control module to reset the connection.

10. A network disconnection and alarm device according to claim 9, characterized in that: The serial network disconnection and alarm device is correspondingly configured with an analog serial network detector, and the analog serial network detector includes a UDP probe module and a UDP probe transceiver module, wherein: The UDP probe module of the simulated serial network detector is connected to the UDP probe transceiver module of the serial network disconnection and alarm device. The UDP probe transceiver module of the simulated serial network detector is connected to the UDP probe module of the serial network disconnection and alarm device corresponding to the UDP probe module deployed in the internal private network. The two ends of the simulated serial network detector are respectively connected to the external network and the internal private network, and the simulated serial network detection is performed by triggering each other through switch quantities.

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