CN111953372A - VHF transceiver switcher - Google Patents
VHF transceiver switcher Download PDFInfo
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- CN111953372A CN111953372A CN202010733865.4A CN202010733865A CN111953372A CN 111953372 A CN111953372 A CN 111953372A CN 202010733865 A CN202010733865 A CN 202010733865A CN 111953372 A CN111953372 A CN 111953372A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/401—Circuits for selecting or indicating operating mode
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/44—Transmit/receive switching
- H04B1/46—Transmit/receive switching by voice-frequency signals; by pilot signals
Abstract
The invention discloses a VHF transceiver switcher, which comprises an interface module, a switching module, a control module and a display module. The interface module is provided with 8 groups of site access interfaces, and each group of site access interfaces comprises 6 groups of transceiver audio control lines and at least one group of spare transceiver audio control lines. When the first transceiver needs to be switched to the standby transceiver, the control module determines a first transceiver audio control line corresponding to the first transceiver according to user operation, then controls the switching module to disconnect the input end of the first transceiver audio control line and connect the output end of the first transceiver audio control line with the input end of the standby transceiver audio control line; the display module is used for displaying the operation condition of the transceivers of each group of stations. The technical scheme of the invention can not only switch the standby transceiver in real time when the transceiver fails, but also does not influence normal communication.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a VHF transceiver switcher.
Background
An ultrashort wave transceiver (VHF transceiver) is a device for receiving and transmitting ultrashort wave radio frequency signals, and is an important component of an ultrashort wave communication system working in a very high frequency band (30-300 MHz). The ultrashort wave transmitter is a device for modulating the information signal to the generated carrier signal to form modulated carrier, then the modulated carrier is fed to the antenna through frequency conversion and amplification, and the modulated carrier is transmitted to the space in the form of electromagnetic wave. An ultrashort wave receiver is a device that receives modulated radio waves and converts them into the original information.
In existing communication systems, multiple transceivers (up to 6) are deployed at each site. When a transceiver at a site fails, maintenance personnel are required to bring a new transceiver to the site for replacement. The process generally needs 1-2 maintenance personnel to spend 1-2 working days to repair the fault, the repair efficiency is low, real-time switching cannot be achieved, and normal communication is not influenced.
Disclosure of Invention
Embodiments of the present invention provide a VHF transceiver switcher, which can switch a standby transceiver in real time without affecting normal communication when a transceiver fails.
The present invention provides a switching device for VHF transceiver, comprising: the device comprises an interface module, a switching module, a control module and a display module;
the interface module is provided with 8 groups of site access interfaces, and each group of site access interfaces comprises 6 groups of transceiver audio control lines and at least one group of spare transceiver audio control lines;
when the first transceiver needs to be switched to the standby transceiver, the control module determines a first transceiver audio control line corresponding to the first transceiver according to user operation, then controls the switching module to disconnect the input end of the first transceiver audio control line and connect the output end of the first transceiver audio control line with the input end of the standby transceiver audio control line; wherein the first transceiver and the standby transceiver are disposed in the same site;
the display module is used for displaying the operation condition of the transceivers of each group of stations;
the VHF transceiver switcher is particularly used for automatically switching the working channel of the transceiver with the fault to the corresponding standby transceiver when any transceiver of each site has the fault.
Further, a set of site access interfaces includes: a site input interface and a site output interface;
the site input interface comprises input ends of 6 groups of transceiver audio control lines and input ends of at least one group of spare transceiver audio control lines;
the site output interface includes outputs of 6 sets of transceiver audio control lines.
Further, the switching modules are respectively provided with 6 switching circuits;
the input end and the output end of each group of transceiver audio control circuit are connected through 1 switching circuit.
Further, the switching circuit is a single-pole double-gate switch circuit;
the single-pole double-gate switch circuit comprises a first switch end, a second switch end and a third switch end;
the input end and the output end of each group of transceiver audio control circuit are connected through 1 switching circuit, which specifically comprises: the output end and the input end of each group of transceiver audio control circuit are respectively connected with the first switch end and the second switch end of a single-pole double-gate switch circuit;
and the third switch ends of all the single-pole double-gate switch circuits are connected with the input end of the audio control circuit of the standby transceiver.
Furthermore, the switching module is also provided with an interlocking circuit;
the interlock circuit is used for locking the switching functions of other switching circuits when the first switch end of any switching circuit is connected with the third switch end.
Further, the site input interface is a male interface with the model number of DB-37;
the site output interface is a female interface with the model number of DB-37.
Further, the VHF transceiver switcher is also configured to switch on the audio control lines of the transceivers of the stations of each group when the VHF transceiver switcher is powered off.
Further, the display module includes a display panel; the display panel is provided with a key module and a plurality of indicator lamps;
the key module is used for the user to execute the user operation;
the display panel realizes the display of the operating conditions of the transceivers of each group of stations by controlling the on and off of the plurality of indicator lamps.
Further, the VHF transceiver switcher is further configured to execute the following communication device replacement method, specifically:
the VHF transceiver switcher sets a plurality of time gaps corresponding to each path of signal, and realizes one-line transmission of multi-path signals by the cross transmission of PCM equipment in time; wherein, the transceiver audio signal of each station is accessed to each interface of the PCM device;
when any transceiver of each site is in fault, the VHF transceiver switcher switches the working channel of the fault transceiver to the corresponding standby transceiver by modifying the corresponding association relationship between the time gap of the fault transceiver and the path interface.
Furthermore, the VHF transceiver switcher is also provided with a line switcher;
the user end of the line switcher is connected with the PCM equipment; the main end of the line switcher is respectively connected with the main transceiver of each station; the standby end of the line switcher is connected with the standby transceiver;
when any transceiver of each site is in fault, the line switcher switches the working channel of the fault transceiver to the corresponding standby transceiver according to the remote control instruction.
As can be seen from the above, an embodiment of the present invention provides a VHF transceiver switch, which includes an interface module, a switching module, a control module, and a display module. The interface module is provided with 8 groups of site access interfaces, and each group of site access interfaces comprises 6 groups of transceiver audio control lines and at least one group of spare transceiver audio control lines. When the first transceiver needs to be switched to the standby transceiver, the control module determines a first transceiver audio control line corresponding to the first transceiver according to user operation, then controls the switching module to disconnect the input end of the first transceiver audio control line and connect the output end of the first transceiver audio control line with the input end of the standby transceiver audio control line; the first transceiver and the standby transceiver are arranged in the same site; the display module is used for displaying the operation condition of the transceivers of each group of stations. Compared with the prior art that the maintenance and the replacement are carried out on site by manually going to the site, the invention only needs to arrange one standby transceiver in the site and connect the audio control circuit of each transceiver into the switcher of the invention, when a certain transceiver is invented to be in fault, the remote switching of the standby transceiver can be realized through the switcher, the switching on site is not needed, the real-time performance is improved, and the normal communication is not influenced.
Drawings
Fig. 1 is a schematic diagram of an embodiment of a VHF transceiver switch provided in the present invention;
fig. 2 is a schematic diagram of a rear structure of an embodiment of the VHF transceiver switch provided by the present invention;
FIG. 3 is a schematic diagram of a circuit structure of the switching circuit provided by the present invention during normal operation;
fig. 4 is a schematic circuit diagram of the switching circuit provided by the present invention when accessing a standby transceiver;
FIG. 5 is a schematic circuit diagram of an embodiment of an audio channel provided by the present invention;
fig. 6 is a schematic structural diagram of an embodiment of a display panel provided in the present invention.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of a VHF transceiver switch provided in the present invention. The VHF transceiver switch comprises: the device comprises an interface module 1, a switching module 2, a control module 3 and a display module 4. The interface module 1, the switching module 2 and the control module 3 may be, but are not limited to be, integrated on a circuit board, and a housing is disposed outside the circuit board. The display module 4 is connected with the control module 3, and the display module is arranged on the shell.
In this embodiment, the interface module 1 is provided with 8 sets of site access interfaces. The switch of the present invention can access 8 sites, typically multiple transceivers per site (up to 6), and the present invention requires a more spare transceiver per site. Each group of site access interfaces thus includes 6 groups of transceiver audio control lines and at least one group of spare transceiver audio control lines.
The working principle and the flow of the switcher are as follows:
when the first transceiver needs to be switched to the standby transceiver, the control module determines a first transceiver audio control line corresponding to the first transceiver according to user operation, then controls the switching module to disconnect the input end of the first transceiver audio control line, and connects the output end of the first transceiver audio control line with the input end of the standby transceiver audio control line.
In this embodiment, the first transceiver is a device to be switched, and the switching reason is that the first transceiver is out of order or needs to be shut down and repaired. But since the first transceiver is still operating normally before a switch or failure, i.e. the audio control line of the first transceiver to which it corresponds is still connected (the input of the audio control line is connected to the output). At this time, after the control module determines the first transceiver audio control line according to the user operation, the control switching module disconnects the input end of the first transceiver audio control line and connects the output end of the first transceiver audio control line with the input end of the standby transceiver audio control line, thereby realizing the switching of the standby transceiver. The VHF transceiver switcher is particularly used for automatically switching the working channel of the faulted transceiver to the corresponding standby transceiver when any transceiver of each site is faulted.
In the present embodiment, the user operation may be, but is not limited to, inputting a control instruction or inputting a key operation, thereby determining a line to be switched.
In this embodiment, a set of station access interfaces includes: a site input interface and a site output interface. A site input interface includes inputs for 6 sets of transceiver audio control lines, and inputs for at least one set of spare transceiver audio control lines. One site output interface includes the outputs of 6 sets of transceiver audio control lines.
As an example of this embodiment, the site input interface is a male interface with model number DB-37; the site output interface is a female interface with model number DB-37.
Referring to fig. 2 as an example of this embodiment, fig. 2 is a schematic diagram of a back structure of an embodiment of the VHF transceiver switch provided in the present invention. The site input interface is arranged on the back of the shell and can be hot plugged, and meanwhile, an RS-232 interface is also arranged for connecting a computer and controlling the switcher.
In this embodiment, since there are 6 transceivers per site, the switching module 2 is provided with 6 switching circuits, respectively. Each switching circuit corresponds to a transceiver, so the input end and the output end of the audio control circuit of each transceiver group are connected through 1 switching circuit.
In the present embodiment, the switching circuit is a single-pole double-gate switch circuit. As shown in fig. 3, each single pole double gate switch circuit includes a first switch terminal (left side), a second switch terminal (right side up), and a third switch terminal (right side down). The input end and the output end of each group of transceiver audio control circuit are connected through 1 switching circuit, which specifically comprises: the output end and the input end of each group of transceiver audio control circuit are respectively connected with the first switch end and the second switch end of a single-pole double-gate switch circuit; and the third switch ends of all the single-pole double-gate switch circuits are connected with the input end of the audio control circuit of the standby transceiver.
To better illustrate the working principle of the present invention, referring to fig. 4, fig. 4 is a schematic circuit structure diagram of the switching circuit provided by the present invention when accessing the standby transceiver. As shown in fig. 4, the transceiver numbered 1 switches from the second switch terminal to the third switch terminal of fig. 3, so that the input terminal of the audio control line of the standby transceiver is connected to the output terminal of the audio control line of the transceiver, completing the switching.
In this embodiment, the input or output of an audio control line includes 4 interfaces (2 transmitting and 2 receiving), and the 4-line audio is switched simultaneously during switching, as shown in fig. 5.
In this embodiment, the switching module is further provided with an interlock circuit for locking the switching functions of the other switching circuits when the first switch terminal of any switching circuit is connected with the third switch terminal. To avoid the standby transceiver from accessing multiple transceivers simultaneously due to malfunction or other reasons, an interlock circuit is provided to add an interlock function so that the standby transceiver can only access one transceiver. The interlock circuit is a conventional circuit, and its specific circuit structure is not described herein.
In this embodiment, when the VHF transceiver switch is powered down, the transceiver audio control lines of each group of stations remain on. Even if the switcher is powered off, all the audio channels can be communicated to work, and all the lines can keep the current state or return to the original state to work when the switcher is powered off. If so, setting the following steps: when each line is restored to the original state to work, a user can judge whether the switcher has a fault or is powered off by monitoring the fault condition of the transceiver.
In this embodiment, the display module 4 includes a display panel, and a key module is disposed on the display panel and used for a user to perform the user operation. In addition, the display panel is also provided with a plurality of indicator lamps; the display panel realizes the display of the operating conditions of the transceivers of each group of stations by controlling the on and off of a plurality of indicator lamps. As shown in fig. 6, the display panel is arranged in a matrix form, and is provided with corresponding stations and transceivers, and handrails are arranged on both sides of the panel.
In this embodiment, a user can input a switching instruction by operating the key module, for example, when switching, first select a station number (1-8), then select a device number (1-6), and then press the SET key, so as to select a transceiver of a certain station to switch to a standby transceiver in the station. If the standby transceiver needs to be restored, the original transceiver is accessed and the standby transceiver is disconnected according to the serial number of the station and the RESET key. If the operation interval of the two keys exceeds 1 minute, the operation is invalid, and the key operation needs to be performed again.
In the present embodiment, in addition to the above-described method of remotely replacing a communication apparatus, the method of remotely replacing a communication apparatus may be implemented by another two methods. The second method is that the VHF transceiver switcher sets a plurality of time gaps corresponding to each path of signal, and realizes one path to transmit multi-path signals by the PCM equipment in a time cross-transmission way; wherein, the transceiver audio signal of each station is accessed to each interface of the PCM device; when any transceiver of each site is in fault, the VHF transceiver switcher switches the working channel of the fault transceiver to the corresponding standby transceiver by modifying the corresponding association relationship between the time gap of the fault transceiver and the path interface.
The third method is that the VHF transceiver switcher is also provided with a line switcher; the user end of the line switcher is connected with the PCM equipment; the main end of the line switcher is respectively connected with the main transceiver of each station; the standby end of the line switcher is connected with the standby transceiver; when any transceiver of each site is in fault, the line switcher switches the working channel of the fault transceiver to the corresponding standby transceiver according to the remote control instruction.
The second and third methods are described in detail below, and the second method is to perform remote switching by changing the time slot through network management software, so as to implement remote replacement of the transceiver. PCM (pulse code modulation) is a process in which an analog signal is sampled, quantized, and encoded to convert a continuous analog signal into a discrete binary digital signal for transmission. E1 is the primary group rate standard for PCM, which samples at 8000 frames per second while multiplexing 32 slots, each at 64kbps bandwidth. The PCM equipment is a multiplexing equipment which compiles an analog signal into a 64kbit/s digital signal through pulse code modulation and then multiplexes 30 paths of compiled signals into 2 Mbit/s. At a sending end, time for transmitting signals is divided by using a time division multiplexing technology, so that different signals are transmitted in different time, namely, the whole transmission time is divided into 32 time intervals (called time slots), each time slot is occupied by one path of signal, wherein, the 0 th time slot and the 16 th time slot are used for transmitting a frame synchronization sequence and a control signaling, the other 30 time slots are used for transmitting service information, and one line is used for transmitting multi-path signals by cross-transmitting in time. And decomposing the signals into multiple paths of analog signals at a receiving end through PCM equipment.
In application, audio signals of transceivers of each station are accessed to interfaces of each path of PCM equipment at a far end, the signals are compiled into digital signals, the digital signals are transmitted to a local side through corresponding time slots of the interfaces of each path in sequence, and the signals of each path are restored in sequence at the local side, and vice versa. In general PCM, the interfaces of the remote PCM device and the local PCM device are in one-to-one correspondence, the time slot sequence of each interface signal in E1 is fixed, and the port from which the remote enters and the port from which the local exits, so the audio signal of the transceiver is transmitted back to the local, which is generally a fixed interface, when the remote transceiver or the corresponding channel of PCM is faulty, the device loses contact with the control center, and the service is interrupted therewith. Therefore, if the position of each interface signal in the E1 time slot can be changed, which is equivalent to changing the corresponding relationship between the far-end PCM and the central office PCM, the possibility that the central office 1 interfaces correspond to a plurality of interfaces from the far-end 1 interfaces is changed, thereby realizing the flexibility of networking. Therefore, the intelligent PCM can be replaced, a network management system is built, and through network management software, maintenance personnel can remotely change the time slot intersection between each interface board card of the remote PCM and the E1, so that the interface corresponding relation between the remote PCM and the local PCM is changed. In application, a standby transceiver is connected to a standby interface of a far-end PCM, and when any one path of input of a main transceiver has a problem, the standby interface is remotely switched to by using network management software to change a time slot mode, so that remote replacement of transceiver equipment is realized.
In this example, the third way is to implement remote switching by adding a line switch. The line switcher is a switching device for protecting a user line, provides main-standby switching of 30 audio lines, and automatically switches to a standby line after receiving a manual input switching command when the main line has a fault. The switching command is directly remotely operated by network management software through TCP/IP, and when the switching is controlled, the specific path of switching can be set by the software, and the switching can be performed for several paths at one time or completely.
In application, the interface of VHF station PCM is connected to the user end of line switcher, several main transceivers are connected to the main end of line switcher, 1 spare transceiver is connected in parallel to the spare end of line switcher. When any one main transceiver fails, the centralized monitoring system of the operation center console switches the line of the VHF station failure transceiver to the spare transceiver interface, thereby realizing the remote replacement of the equipment.
When the three methods are executed or actually applied, one or more modes can be selected for use according to the situation, and the system and the circuit structure can be adjusted correspondingly. The effects of the three methods are compared as follows:
the method 1 has the advantages that the organic integration of the system can be realized, the seamless butt joint with the original system is realized, the spare equipment can be automatically started by software when the transceiver of the remote site fails, the manual operation is not needed, the equipment is changed in a remote mode most flexibly, the expandability is strong, and the redundant channel after the expansion is convenient for the access of other services. The system has the disadvantages that enough redundancy is not considered during system construction, the channel interface of the existing switch is basically used up, the related auxiliary interface board card and the machine frame are additionally arranged besides the Modem card CNM-299V, the CMH-2551 audio/PCM conversion module and the CMH-2552PTT/PCM conversion module during expansion, all equipment needs to be ordered to the original factory, the price is high, and the installation is complex.
The method 2 has the advantages of realizing the centralized management of the PCM transmission network, having more flexible equipment replacement, simpler installation and more moderate price. The method has the disadvantages that manual intervention is needed for remotely replacing the equipment, the operation is relatively complex, and an operator on duty is required not to have half fault in the operation, otherwise, signals of the whole site are disordered, and the normal guard of the service is influenced. Meanwhile, the method can cause the communication to be interrupted temporarily in the process of installation and debugging.
The method 3 is the simplest of the three methods, the equipment is easy to install, the remote equipment change operation of the operator on duty is simple and clear, and the capital investment requirement is low. The disadvantage is that the flexibility is not as good as the former two methods, because each station has multiple transceivers, the failed transceiver is uncertain, the spare equipment has only one, the audio interface of the spare equipment needs to be connected in parallel to the spare lines of all the transceivers, the requirement on the installation technology is high, and the installation process of the method also needs to temporarily interrupt the communication service.
As can be seen from the above, an embodiment of the present invention provides a VHF transceiver switch, which includes an interface module, a switching module, a control module, and a display module. The interface module is provided with 8 groups of site access interfaces, and each group of site access interfaces comprises 6 groups of transceiver audio control lines and at least one group of spare transceiver audio control lines. When the first transceiver needs to be switched to the standby transceiver, the control module determines a first transceiver audio control line corresponding to the first transceiver according to user operation, then controls the switching module to disconnect the input end of the first transceiver audio control line and connect the output end of the first transceiver audio control line with the input end of the standby transceiver audio control line; the first transceiver and the standby transceiver are arranged in the same site; the display module is used for displaying the operation condition of the transceivers of each group of stations. Compared with the prior art that the maintenance and the replacement are carried out on site by manually going to the site, the invention only needs to arrange one standby transceiver in the site and connect the audio control circuit of each transceiver into the switcher of the invention, when a certain transceiver is invented to be in fault, the remote switching of the standby transceiver can be realized through the switcher, the switching on site is not needed, the real-time performance is improved, and the normal communication is not influenced.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
It will be understood by those skilled in the art that all or part of the processes of the above embodiments may be implemented by hardware related to instructions of a computer program, and the computer program may be stored in a computer readable storage medium, and when executed, may include the processes of the above embodiments. The storage medium may be a magnetic disk, an optical disk, a Read-only Memory (ROM), a Random Access Memory (RAM), or the like.
Claims (10)
1. A VHF transceiver switch, comprising: the device comprises an interface module, a switching module, a control module and a display module;
the interface module is provided with 8 groups of site access interfaces, and each group of site access interfaces comprises 6 groups of transceiver audio control lines and at least one group of spare transceiver audio control lines;
when the first transceiver needs to be switched to the standby transceiver, the control module determines a first transceiver audio control line corresponding to the first transceiver according to user operation, then controls the switching module to disconnect the input end of the first transceiver audio control line and connect the output end of the first transceiver audio control line with the input end of the standby transceiver audio control line; wherein the first transceiver and the standby transceiver are disposed in the same site;
the display module is used for displaying the operation condition of the transceivers of each group of stations;
the VHF transceiver switcher is particularly used for automatically switching the working channel of the transceiver with the fault to the corresponding standby transceiver when any transceiver of each site has the fault.
2. The VHF transceiver switch of claim 1, wherein the set of site access interfaces comprises: a site input interface and a site output interface;
the site input interface comprises input ends of 6 groups of transceiver audio control lines and input ends of at least one group of spare transceiver audio control lines;
the site output interface includes outputs of 6 sets of transceiver audio control lines.
3. The VHF transceiver switch according to claim 2, wherein the switching modules are respectively provided with 6 switching circuits;
the input end and the output end of each group of transceiver audio control circuit are connected through 1 switching circuit.
4. The VHF transceiver switch of claim 3, wherein the switching circuit is a single pole, double gate switching circuit;
the single-pole double-gate switch circuit comprises a first switch end, a second switch end and a third switch end;
the input end and the output end of each group of transceiver audio control circuit are connected through 1 switching circuit, which specifically comprises: the output end and the input end of each group of transceiver audio control circuit are respectively connected with the first switch end and the second switch end of a single-pole double-gate switch circuit;
and the third switch ends of all the single-pole double-gate switch circuits are connected with the input end of the audio control circuit of the standby transceiver.
5. The VHF transceiver switch of claim 4, wherein the switching module is further provided with an interlock circuit;
the interlock circuit is used for locking the switching functions of other switching circuits when the first switch end of any switching circuit is connected with the third switch end.
6. The VHF transceiver switch of any one of claims 2 to 5, wherein the site input interface is a male interface of type DB-37;
the site output interface is a female interface with the model number of DB-37.
7. The VHF transceiver switch of claim 1, wherein the VHF transceiver switch is further configured such that when the VHF transceiver switch is powered down, the transceiver audio control lines of each group of sites remain on.
8. The VHF transceiver switch of claim 1, wherein the display module includes a display panel; the display panel is provided with a key module and a plurality of indicator lamps;
the key module is used for the user to execute the user operation;
the display panel realizes the display of the operating conditions of the transceivers of each group of stations by controlling the on and off of the plurality of indicator lamps.
9. The VHF transceiver switch of claim 1, further configured to perform the following communication device replacement method, in particular:
the VHF transceiver switcher sets a plurality of time gaps corresponding to each path of signal, and realizes one-line transmission of multi-path signals by the cross transmission of PCM equipment in time; wherein, the transceiver audio signal of each station is accessed to each interface of the PCM device;
when any transceiver of each site is in fault, the VHF transceiver switcher switches the working channel of the fault transceiver to the corresponding standby transceiver by modifying the corresponding association relationship between the time gap of the fault transceiver and the path interface.
10. The VHF transceiver switch of claim 1, further provided with a line switcher;
the user end of the line switcher is connected with the PCM equipment; the main end of the line switcher is respectively connected with the main transceiver of each station; the standby end of the line switcher is connected with the standby transceiver;
when any transceiver of each site is in fault, the line switcher switches the working channel of the fault transceiver to the corresponding standby transceiver according to the remote control instruction.
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| CN202010733865.4A CN111953372A (en) | 2020-07-27 | 2020-07-27 | VHF transceiver switcher |
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| CN202010733865.4A CN111953372A (en) | 2020-07-27 | 2020-07-27 | VHF transceiver switcher |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112511970A (en) * | 2020-11-27 | 2021-03-16 | 交通运输部南海航海保障中心广州通信中心 | GMDSS central control system |
| CN112835338A (en) * | 2021-01-08 | 2021-05-25 | 杭州和利时自动化有限公司 | Channel module and control device |
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| CN112511970A (en) * | 2020-11-27 | 2021-03-16 | 交通运输部南海航海保障中心广州通信中心 | GMDSS central control system |
| CN112511970B (en) * | 2020-11-27 | 2023-08-11 | 交通运输部南海航海保障中心广州通信中心 | GMDSS central control system |
| CN112835338A (en) * | 2021-01-08 | 2021-05-25 | 杭州和利时自动化有限公司 | Channel module and control device |
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