Switching control system for medium-wave double-feeder double-network

Abstract

The utility model discloses a switching control system for a medium-wave double-feeder double-network. The system comprises a main control module which is used for providing control signals for a coaxial switch control module and a knife switch control module; the coaxial switch control module is used for controlling the switching of a coaxial switch connected with the coaxial switch control module according to the control signal; the knife switch control module is used for controlling the switching of a knife switch connected with the knife switch control module according to the control signal; the display and key module is used for displaying a first switch position and a second switch position; and the upper computer is used for transmitting the transmitting frequency of the medium wave transmitter on the antenna under the condition that the first switch position and the second switch position are on the same side network position. According to the embodiment of the utility model, through the control system of the main control module, the coaxial switch control module, the knife switch control module, the display and key module and the upper computer, the local and remote control switching of a main network and a standby network can be realized, the stability of the system is improved, and the safe broadcasting is ensured.

Description

Technical Field

[0001] The embodiment of the utility model relates to the technical field of broadcast communication, and in particular to a switching control system for medium wave dual-feeder dual networks. Background Art

[0002] Medium wave broadcasting is an important position for occupying aerial propaganda. It plays an important role in consolidating borders and preventing infiltration, strengthening cultural propaganda, and enriching people's cultural life. For the frequency transmission of the medium wave transmission system, backup equipment is often added to ensure safe frequency broadcasting. However, for the medium wave dual feeder and dual network scenario without adding backup equipment, there is currently no practical solution to ensure safe broadcasting and network switching functions. Therefore, there is an urgent need for a switching control system for the medium wave transmission system to solve the above technical problems. Utility Model Content

[0003] In view of this, the utility model provides a switching control system for medium wave dual-feeder dual networks, which can realize local and remote control switching of the main and standby networks, improve system stability, and ensure safe broadcasting.

[0004] According to one aspect of the utility model, an embodiment of the utility model provides a switching control system for a medium wave dual feeder dual network, the system comprising:

[0005] Main control module, coaxial switch control module, knife switch control module, display and button module and host computer;

[0006] The main control module is respectively connected to the host computer, the display and button module, the knife switch control module and the coaxial switch control module, and is used to provide control signals for the coaxial switch control module and the knife switch control module; wherein the control signal includes: receiving a first remote switching control signal of the host computer, or receiving a local switching control signal and a second remote switching control signal of the display and button module;

[0007] The coaxial switch control module is connected to the main control module and is used to control the switching of the coaxial switch connected to the coaxial switch control module according to the control signal, so that the coaxial switch switches to the first switch position to output the transmission frequency of the medium wave transmitter, and transmits the first switch position back to the main control module;

[0008] The knife switch control module is connected to the main control module and is used to control the switching of the knife switch connected to the knife switch control module according to the control signal, so that the knife switch is switched to the second switch position to output the transmission frequency of the medium wave transmitter, and the second switch position is transmitted back to the main control module, and the first switch position and the second switch position are displayed;

[0009] The display and button module is connected to the coaxial switch control module and the main control module respectively, and is used to receive the first switch position returned by the coaxial switch control module, and the second switch position returned by the knife switch control module to the main control module;

[0010] The host computer is connected to the main control module, and is used to monitor whether the first switch position and the second switch position switches are in the same side network position, and when the first switch position and the second switch position switches are in the same side network position, the transmission frequency of the medium wave transmitter is sent to the antenna.

[0011] The switching control system of the embodiment of the utility model comprises: a main control module, a coaxial switch control module, a knife switch control module, a display and button module and a host computer; wherein the main control module is used to provide control signals for the coaxial switch control module and the knife switch control module; the coaxial switch control module is used to control the switching of the coaxial switch connected to the coaxial switch control module according to the control signal, so that the coaxial switch switches to the first switch position to output the transmission frequency of the medium wave transmitter, and transmits the first switch position back to the main control module; the knife switch control module is respectively connected to the main control module and the knife switch control module, and is used to control the switching of the knife switch in the knife switch control module according to the control signal, so that the knife switch switches to the second switch position to output the transmission frequency of the medium wave transmitter, And the second switch position is transmitted back to the main control module; the display and button module is used to receive the first switch position transmitted back by the coaxial switch control module, and the second switch position transmitted back by the knife switch control module to the main control module, and display the first switch position and the second switch position; the upper computer is connected to the main control module, and is used to monitor whether the first switch position and the second switch position switches are on the same side of the network position, and when the first switch position and the second switch position switches are on the same side of the network position, the transmission frequency of the medium wave transmitter is sent to the antenna. Through the above-mentioned switching control system including the main control module, the coaxial switch control module, the knife switch control module, the display and button module and the upper computer, local and remote control switching of the main and standby networks can be realized, thereby improving system stability and ensuring safe broadcasting.

[0012] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present utility model, nor are they intended to limit the scope of the present utility model. Other features of the present utility model will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 A structural diagram of a switching control system for a medium wave dual feeder dual network provided in one embodiment of the utility model;

[0015] Figure 2 A schematic diagram of the structure of another switching control system for medium wave dual feeder dual network provided by an embodiment of the utility model;

[0016] Figure 3 A schematic structural diagram of a medium wave transmission system including a switching control system for medium wave dual feeder dual networks is provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0017] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0018] It should be noted that the terms "target", "first" and "second" in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0019] In one embodiment, Figure 1 A structural diagram of a switching control system for a medium wave dual feeder dual network provided by an embodiment of the utility model, such as Figure 1 As shown, the system includes:

[0020] Main control module 110, coaxial switch control module 120, knife switch control module 130, display and button module 140 and host computer 150;

[0021] The main control module 110 is respectively connected to the host computer 150, the display and button module 140, the knife switch control module 130 and the coaxial switch control module 120, and is used to provide control signals for the coaxial switch control module 120 and the knife switch control module 130; wherein the control signal includes: receiving a first remote switching control signal from the host computer, or receiving a local switching control signal and a second remote switching control signal from the display and button module;

[0022] The coaxial switch control modules 120 are respectively connected to the main control modules 110, and are used to control the switching of the coaxial switches connected to the coaxial switch control modules 120 according to the control signal, so that the coaxial switches are switched to the first switch position to output the transmission frequency of the medium wave transmitter, and the first switch position is transmitted back to the main control module 110;

[0023] The knife switch control modules 130 are respectively connected to the main control modules 110, and are used to control the switching of the knife switches connected to the knife switch control modules 130 according to the control signal, so that the knife switches are switched to the second switch position to output the transmission frequency of the medium wave transmitter, and the second switch position is transmitted back to the main control module 110;

[0024] The display and button module 140 is connected to the coaxial switch control module 120 and the main control module 110 respectively, and is used to receive the first switch position returned by the coaxial switch control module 120 and the second switch position returned by the knife switch control module 130 to the main control module 110, and display the first switch position and the second switch position;

[0025] The host computer 150 is connected to the main control module 110, and is used to monitor whether the first switch position and the second switch position switch are at the same side network position, and when the first switch position and the second switch position switch are at the same side network position, the transmission frequency of the medium wave transmitter is sent to the antenna.

[0026] The control signal may include: receiving a first remote switching control signal from the host computer 150, or receiving a local switching control signal and a second remote switching control signal from the display and key module 140. The first remote switching control signal in this embodiment is the switching control instruction signal sent by the host computer 150; the second remote switching control signal is the control signal generated by the user operating the display and key module 140. It can be understood that the display and key module 140 includes a display screen window and a key unit window. The display screen window is used to display the returned switching position. The key unit window may also include a local switching key subunit and a remote switching subunit. The local switching key subunit is used to receive the user's local switching operation, and the remote switching subunit is used to receive the user's remote switching operation.

[0027] In this embodiment, the first switch position can be understood as the switch position of the coaxial switch, which characterizes the switch state of the coaxial switch, which may include the switch state between the coaxial switch and the main network, and the switch state between the coaxial switch and the backup network; the switch state may include: closed, attracted and normally open states; when the switch state between the coaxial switch and the main network is closed, it indicates that the coaxial switch and the main network are connected, and the transmission frequency of the medium wave transmitter can be transmitted to the main network through the coaxial switch and the feeder; when the switch state between the coaxial switch and the backup network is closed, it indicates that the coaxial switch and the backup network are connected, and the transmission frequency of the medium wave transmitter can be transmitted to the backup network through the coaxial switch and the feeder; of course, when the medium wave transmitter is turned on, the host computer receives the power-on signal of the medium wave transmitter, and can choose to select one of the networks for the transmission frequency through the coaxial switch.

[0028] In this embodiment, the second switch position can be understood as the switch position of the knife switch, which characterizes the switch state of the knife switch, which may include the switch state between the knife switch and the main network, and the switch state between the knife switch and the backup network; similarly, the switch state at this time may also include: closed, attracted and normally open states; when the switch state between the knife switch and the main network is closed, it indicates that the knife switch and the main network are connected, and the transmission frequency of the medium wave transmitter can be transmitted to the main network through the knife switch and the feeder; when the switch state between the knife switch and the backup network is closed, it indicates that the knife switch and the backup network are connected, and the transmission frequency of the medium wave transmitter can be transmitted to the backup network through the coaxial switch and the feeder; of course, when the medium wave transmitter is turned on, the host computer receives the power-on signal of the medium wave transmitter, and can choose to select one of the networks for the transmission frequency through the knife switch.

[0029] It should be noted that when the medium wave transmitter is turned on, in order to ensure safe broadcasting, the host computer receives the medium wave transmitter power-on signal, collects the on / off status of the transmitter, and monitors the main control module 110, and provides the coaxial switch control module 120 and the knife switch control module 130 with the position of the coaxial switch and the position of the high-frequency knife corresponding to the control signal respectively. Each collected quantity is sent to the host computer 150 in real time to determine whether the first switch position and the second switch position switch are the network position on the same side, and when the first switch position and the second switch position switch are the network position on the same side, the transmission frequency of the medium wave transmitter is sent to the antenna. Of course, if the host computer 150 detects that the positions of the coaxial switch and the knife switch are inconsistent, an alarm will be triggered to make the host computer control the medium wave transmitter to be in a non-power-on state, that is, the transmitter cannot be turned on at this time.

[0030] In some embodiments, the main control module 110 is respectively connected to the host computer 150, the display and button module 140, the knife switch control module 130 and the coaxial switch control module 120, and is used to provide control signals for the coaxial switch control module 120 and the knife switch control module 130; wherein the control signal includes: receiving a first remote switching control signal from the host computer, or receiving a local switching control signal and a second remote switching control signal from the display and button module; wherein the main control module adopts a 32-bit ARM chip; the knife switch control module adopts a 32-bit ARM chip; and the coaxial switch control module adopts a 32-bit ARM chip.

[0031] In some embodiments, the coaxial switch control module 120 is respectively connected to the main control module 110, and is used to receive the control signal of the main control module 110, and control the switching of the coaxial switch connected to the coaxial switch control module 120 according to the control signal, so that the coaxial switch switches to the first switch position to output the transmission frequency of the medium wave transmitter, and transmits the first switch position back to the main control module 110; in one embodiment, the coaxial switch control module 120 is respectively connected to the main network and the backup network in the medium wave dual network through feeders, and the medium wave transmitter in the medium wave transmission system and the coaxial switch control module in the switching control system are connected through a feeder pipe, and the feeder pipe is shielded by copper wire on the outside, and the copper wire is turned into a copper pipe.

[0032] In some embodiments, they are respectively connected to the main control module 110, used to receive the control signal of the main control module 110, and control the switching of the knife switch connected to the knife switch control module 130 according to the control signal, so that the knife switch is switched to the second switch position to output the transmission frequency of the medium wave transmitter, and the second switch position is transmitted back to the main control module 110; wherein, the knife switch control module 130 is respectively connected to the main network and the backup network in the dual network.

[0033] In this embodiment, the display and button module 140 is respectively connected to the coaxial switch control module 120 and the main control module 110, and is used to receive the first switch position returned by the coaxial switch control module 120, and the second switch position returned by the knife switch control module 130 to the main control module 110, and display the first switch position and the second switch position. In addition, the displayed positions can also be color-coded so that the user can more clearly see the switch positions corresponding to the coaxial switch and the knife switch, respectively.

[0034] In this embodiment, the host computer 150 is connected to the main control module 110, and is used to monitor whether the first switch position and the second switch position switch are in the same network position, and when the first switch position and the second switch position switch are in the same network position, the transmission frequency of the medium wave transmitter is sent to the antenna. It should be noted that the coaxial switch and the knife switch in this embodiment are interlocked by software set by the host computer 150, which can be understood as that when the coaxial switch transmits the frequency to the antenna through the main network, the knife switch is also in the open state on the main network side, and when the coaxial switch transmits the frequency to the antenna through the backup network, the knife switch is also in the open state on the backup network side, so as to ensure that the coaxial switch and the knife switch are on the same side when the transmitter is turned on. When the host computer 150 monitors that the first switch position and the second switch position switch are in the same network position, the transmission frequency of the medium wave transmitter is sent to the antenna. If the host computer 150 detects that the positions of the coaxial switch and the knife switch are inconsistent, an alarm will be triggered to make the host computer control the medium wave transmitter to be in a non-starting state, that is, the transmitter cannot be turned on at this time.

[0035] The above-mentioned switching control system of the utility model provides control signals to the coaxial switch control module and the knife switch control module through the main control module; the coaxial switch control module controls the switching of the coaxial switch in the coaxial switch control module according to the control signal, so that the coaxial switch switches to the first switch position to output the transmission frequency of the medium wave transmitter, and the first switch position is transmitted back to the main control module; the knife switch control module controls the switching of the knife switch in the knife switch control module according to the control signal, so that the knife switch switches to the second switch position to output the transmission frequency of the medium wave transmitter, and the second switch position is transmitted back to the main control module; the display and key module receives the coaxial switch The host computer monitors whether the first switch position and the second switch position are switches on the same side of the network, and when the first switch position and the second switch position are switches on the same side of the network, the transmitting frequency of the medium wave transmitter is sent to the antenna. Through the switching control system including the main control module, the coaxial switch control module, the knife switch control module, the display and button module and the host computer, local and remote control switching of the main and standby networks can be realized, thereby improving system stability and ensuring safe broadcasting.

[0036] In one embodiment, a switching control system includes: an alarm module;

[0037] The alarm module is connected to the host computer 150 and is used to trigger the alarm mechanism and transmit the alarm information back to the host computer 150 when it is detected that the first switch position and the second switch position switches are not at the same side of the network position.

[0038] In this embodiment, the alarm module is connected to the host computer 150, and is used to trigger the alarm mechanism when it detects that the first switch position and the second switch position are not on the same side of the network position, and transmit the alarm information back to the host computer 150. The alarm mechanism in this embodiment may include but is not limited to alarm prompt information in the form of sound, picture, etc.

[0039] In one embodiment, a switching control system includes: a signal conversion module;

[0040] The signal conversion module is respectively connected to the main control module 110, the coaxial switch control module 120 and the display and button module 130, and is used to convert the control signal into an electrical signal form and output the electrical signal to the coaxial switch control module.

[0041] In one embodiment, the main control module 110 communicates with the host computer 150 via Ethernet; the main control module 110 communicates with the signal conversion module via RS485 protocol; the main control module 110 communicates with the knife switch control module 130 via RS485 protocol.

[0042] In this embodiment, the switching control system includes: a signal conversion module, which is connected to the main control module 110 and the coaxial switch control module 120 respectively, and is used to receive the control signal transmitted by the main control module 110, convert the control signal into an electrical signal, and output the electrical signal to the coaxial switch control module 120; it can be understood that the main control module 110 provides a control signal for the rotation of the motor in the coaxial switch connected to the coaxial switch control module 120, sends it to the signal conversion module through the RS485 protocol, and communicates with the host computer 150 through other network communication methods such as Ethernet communication to achieve remote control, and the main control module 110 also provides a control signal for the knife switch connected to the knife switch control module 130, and sends it to the knife switch control module 130 through Ethernet. In this embodiment, the signal conversion module adopts RS485 relay output to convert the control signal into an electrical signal output, control the rotation of the coaxial switch motor, and output it to the display / button module 140 at the same time.

[0043] In one embodiment, the signal conversion module is also connected to the display and key module, and is used to transmit the electrical signal to the display and key module, so that the display and key module displays the switch position corresponding to the control signal.

[0044] In one embodiment, the display and button module is also used to receive a second remote switching control signal and a local network switching mode input by a user, and send the control signals corresponding to the second remote switching control signal and the local network switching mode to the main control module; wherein the priority of the first remote switching control signal and the second remote switching control signal is: the priority of the first remote switching control signal is higher than that of the second remote switching control signal.

[0045] In this embodiment, the display and button module is also used to receive a second remote switching control signal and a local network switching mode input by the user, and send the control signals corresponding to the second remote switching control signal and the local network switching mode to the main control module. The priority of the first remote switching control signal is higher than that of the second remote switching control signal. It can be understood that the button unit in the display and button module has the function of switching between remote mode and local mode. In remote mode, the control module does not process button input (does not act) and only responds to remote control actions of the host computer.

[0046] In one embodiment, the coaxial switch control module 120 includes: a contact, an insulator, a radio frequency coaxial transmission line, a switching mechanism, and a control interface; wherein the contact is a direct contact signal in the coaxial switch; the insulator is used to isolate the contact; the radio frequency coaxial transmission line is used to connect the coaxial switch to other devices; the control interface is used to receive a control signal to drive the switching mechanism; the switching mechanism is used to control the opening and closing of the contact to achieve the position switching function of the coaxial switch; the knife switch control module includes: a motor, a limit switch, and a remote monitoring interface; wherein the limit switch is used to receive the user's manual switching action command and transmit it to the motor to control the motor rotation; the remote monitoring interface is used to receive a control signal to drive the position switching function of the knife switch.

[0047] In this embodiment, the contact is the part of the switch that directly contacts the signal, and is usually made of a material with good conductive properties, such as gold-plated copper or silver, to reduce signal loss and improve wear resistance. Insulator: used to isolate the contact to prevent signal short circuit or leakage, usually made of a material with a low dielectric constant, such as polytetrafluoroethylene (PTFE). RF coaxial transmission line: used to connect the switch to other devices (for example, it can be a main network), usually matched with the contact inside the switch and the external connector to maintain the consistency of signal transmission. Switching mechanism: can be an electromagnetic drive, pneumatic, manual or other form of driving mechanism, used to control the opening and closing of the contact to achieve the switching of the signal path. Control interface: used to receive external control signals, such as electromagnetic signals, air pressure signals or manual operations, to drive the switching mechanism. In this embodiment, the knife switch control module 130 includes: a motor, a limit switch, and a remote monitoring interface; wherein the limit switch is used to receive the user's manual switching action command and transmit it to the motor to control the rotation of the motor; the remote monitoring interface is used to receive the control signal to drive the switch switching mechanism.

[0048] In one embodiment, Figure 2 An embodiment of the present utility model provides a structural schematic diagram of another switching control system for medium wave dual feeder dual networks.

[0049] like Figure 2As shown, the switching control system for medium wave dual feeder dual network includes: a main control module 210, a coaxial switch control module 220, a knife switch control module 230, a signal conversion module 240, an alarm module 250, a display and button module 260 and a host computer 270; wherein the main control module 210 is respectively connected to the host computer 270, the signal conversion module 240, the display and button module 260 and the knife switch control module 230, and is used to provide control signals for the coaxial switch control module 220 and the knife switch control module 230, and send the control signals to the signal conversion module 240; the signal conversion module 240 is respectively connected to the main control module 210, the coaxial switch control module 220, the display and button module 260, and is used to receive the control signals transmitted by the main control module 210, convert the control signals into electrical signals, and output the electrical signals to the coaxial switch control module 220; The coaxial switch control module 220 is respectively connected to the signal conversion module 240 and the coaxial switch, and is used to control the rotation of the switching mechanism in the coaxial switch so that the coaxial switch switches to the first switch position to output the transmission frequency of the medium wave transmitter, and the first switch position is transmitted back to the main control module 210; the knife switch control module 230 is respectively connected to the main control module 210 and the knife switch, and is used to receive the control signal of the main control module 210, and control the rotation of the switching mechanism in the knife switch according to the control signal, so that the knife switch switches to the second switch position to output the transmission frequency of the medium wave transmitter, and the second switch position is transmitted back to the main control module 210; the host computer 270 is connected to the main control module 210, and is used to monitor whether the first switch position and the second switch position are switches on the same side network position, and when they are on the same side network position, the transmission frequency of the medium wave transmitter is sent to the antenna. The alarm module is connected to the host computer 270 and is used to trigger the alarm mechanism and transmit the alarm information back to the host computer 210 when it is detected that the first switch position and the second switch position switches are not on the same side of the network.

[0050] In this embodiment, the medium wave transmitter selects the main network or backup network output through the coaxial switch, and the main and backup networks select the antenna on the main network or backup network for transmission through the knife switch. The switching control system for the medium wave dual feeder dual network can respectively control the coaxial switch and the knife switch locally and remotely, and can control the motor rotation of the coaxial switch to make the transmitter select the main and backup networks, and can control the electric knife switch to select the antenna on the main network or backup network. The coaxial switch and the knife switch are interlocked by the software set by the host computer to ensure that the coaxial switch and the knife switch are on the same side when the transmitter is turned on.

[0051] In one embodiment, Figure 3A schematic diagram of the structure of a medium wave transmission system including a switching control system for medium wave dual feeder dual network provided in an embodiment of the utility model. The switching system in this embodiment is the switching control system for medium wave dual feeder dual network in the above embodiment, and the control device is the control device composed of other modules except the host computer in the above embodiment.

[0052] like Figure 3 As shown, the medium wave transmission system including the switching control system for medium wave dual feeder dual network includes: medium wave transmitter 310, switching control system 320 for medium wave dual feeder dual network, main network 330, backup network 340 and antenna 350. In this embodiment, the switching control system 320 for medium wave dual feeder dual network can respectively control the coaxial switch and the knife switch locally and remotely, control the motor rotation of the coaxial switch to make the transmitter select the main and backup networks, and control the electric knife switch to select the antenna on the main network or the backup network; the coaxial switch and the knife switch are interlocked by the upper computer software to ensure that the coaxial switch and the knife switch are on the same side when the transmitter is turned on.

[0053] In one embodiment, the present invention also provides a medium wave transmission system, including a switching control system for a medium wave dual feeder dual network as described in any one of the embodiments of the present invention.

[0054] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be performed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0055] The above specific implementations do not constitute a limitation on the protection scope of the present utility model. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A switching control system for medium wave dual feeder dual network, characterized in that: The switching control system comprises: a main control module, a coaxial switch control module, a knife switch control module, a display and button module and a host computer; The main control module is respectively connected to the host computer, the display and button module, the knife switch control module and the coaxial switch control module, and is used to provide control signals for the coaxial switch control module and the knife switch control module; wherein the control signal includes: receiving a first remote switching control signal of the host computer, or receiving a local switching control signal and a second remote switching control signal of the display and button module; The coaxial switch control module is connected to the main control module and is used to control the switching of the coaxial switch connected to the coaxial switch control module according to the control signal, so that the coaxial switch switches to the first switch position to output the transmission frequency of the medium wave transmitter, and transmits the first switch position back to the main control module; The knife switch control module is connected to the main control module and is used to control the switching of the knife switch connected to the knife switch control module according to the control signal, so that the knife switch switches to the second switch position to output the transmission frequency of the medium wave transmitter, and transmits the second switch position back to the main control module; The display and button module is connected to the coaxial switch control module and the main control module respectively, and is used to receive the first switch position sent back by the coaxial switch control module and the second switch position sent back by the knife switch control module to the main control module, and display the first switch position and the second switch position; The host computer is connected to the main control module, and is used to monitor whether the first switch position and the second switch position switches are in the same side network position, and when the first switch position and the second switch position switches are in the same side network position, the transmission frequency of the medium wave transmitter is sent to the antenna.

2. The system according to claim 1, characterized in that The switching control system further includes: an alarm module; Wherein, the alarm module is connected to the host computer, and is used to trigger the alarm mechanism and transmit the alarm information back to the host computer when it is detected that the first switch position and the second switch position switches are not on the same side of the network position.

3. The system according to claim 1, characterized in that The switching control system further includes: a signal conversion module; The signal conversion module is respectively connected to the main control module, the coaxial switch control module and the display and key module, and is used to convert the control signal into an electrical signal and output the electrical signal to the coaxial switch control module.

4. The system according to claim 1, characterized in that The display and button module is also used to receive a second remote switching control signal and a local network switching mode input by a user, and send the control signals corresponding to the second remote switching control signal and the local network switching mode to the main control module; wherein the priority of the first remote switching control signal and the second remote switching control signal is: the priority of the first remote switching control signal is higher than that of the second remote switching control signal.

5. The system according to claim 1, characterized in that The main control module adopts a 32-bit ARM chip; the knife switch control module adopts a 32-bit ARM chip; and the coaxial switch control module adopts a 32-bit ARM chip.

6. The system according to claim 1, characterized in that The coaxial switch control module is connected to the main network and the backup network through feeder lines respectively; The knife switch control module is connected to the main network and the backup network respectively; The medium wave transmitter and the coaxial switch control module are connected via a feeder.

7. The system according to claim 3, characterized in that The main control module communicates with the host computer via Ethernet; The main control module communicates with the signal conversion module via RS485 protocol; The main control module communicates with the knife switch control module via RS485 protocol.

8. The system according to claim 1, characterized in that The coaxial switch control module includes: a contact, an insulator, a radio frequency coaxial transmission line, a switching mechanism, and a control interface; wherein the contact is a direct contact signal in the coaxial switch; the insulator is used to isolate the contact; the radio frequency coaxial transmission line is used to connect the coaxial switch to other devices; the control interface is used to receive a control signal to drive the switching mechanism; the switching mechanism is used to control the opening and closing of the contact to realize the position switching function of the coaxial switch; The knife switch control module includes: a motor, a limit switch, and a remote monitoring interface; wherein the limit switch is used to receive the user's manual switching action instructions and transmit them to the motor to control the motor rotation; the remote monitoring interface is used to receive the control signal to drive the position switching function of the knife switch.

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