A medium wave transmission system

Abstract

The utility model discloses a medium wave transmission system. The system includes a main transmitter, a first backup transmitter, a second backup transmitter, a first coaxial switch, a first controller, a second coaxial switch, a second controller, a first load, a second load, an antenna feed network and an antenna; wherein the main transmitter is connected to the first coaxial switch, the first backup transmitter and the first load are connected to the first coaxial switch; the second backup transmitter and the second load are connected to the second coaxial switch; the first coaxial switch and the second coaxial switch are connected; the second coaxial switch is connected to the antenna feed network, and the antenna feed network is connected to the antenna; the first coaxial switch is connected to the first controller, and the second coaxial switch is connected to the second controller. Through the above technical solution, in the case of failure of the main transmitter and the first backup transmitter, the second backup transmitter can be enabled to shorten the off-air time and ensure the stability of safe broadcasting.

Description

Technical Field

[0001] The embodiment of the utility model relates to the technical field of medium wave transmission, and in particular to a medium wave transmission system. Background Art

[0002] Medium Wave Broadcasting is a form of radio broadcasting using medium wave frequencies (usually between 526.5kHz and 1606.5kHz). In some areas, especially rural and remote areas, this broadcasting method has an important impact on information dissemination, cultural education, and people's cultural life because of its wide signal coverage and ability to penetrate buildings.

[0003] In the existing medium wave transmission system, there is usually a main transmitter and a backup transmitter. However, if the main transmitter and the backup transmitter fail at the same time, it will cause a long period of suspension of broadcasting, resulting in unstable safe broadcasting. Utility Model Content

[0004] The utility model provides a medium wave transmitting system to solve the problems of long-term broadcast suspension and unstable safe broadcasting caused by simultaneous failure of a main transmitter and a backup transmitter in the existing medium wave transmitting system.

[0005] According to one aspect of the utility model, a medium wave transmission system is provided, comprising a main transmitter, a first backup transmitter, a second backup transmitter, a first coaxial switch, a first controller, a second coaxial switch, a second controller, a first load, a second load, an antenna feed network and an antenna; wherein,

[0006] The main transmitter is connected to the first coaxial switch, and the first backup transmitter and the first load are connected to the first coaxial switch;

[0007] The second standby transmitter and the second load are connected to the second coaxial switch;

[0008] The first coaxial switch is connected to the second coaxial switch;

[0009] The second coaxial switch is connected to the antenna feed network, and the antenna feed network is connected to the antenna;

[0010] The first coaxial switch is connected to the first controller, and the second coaxial switch is connected to the second controller.

[0011] The medium wave transmission system provided by the embodiment of the utility model includes a main transmitter, a first backup transmitter, a second backup transmitter, a first coaxial switch, a first controller, a second coaxial switch, a second controller, a first load, a second load, an antenna network and an antenna; wherein the main transmitter is connected to the first coaxial switch, the first backup transmitter and the first load are connected to the first coaxial switch; the second backup transmitter and the second load are connected to the second coaxial switch; the first coaxial switch is connected to the second coaxial switch; the second coaxial switch is connected to the antenna network, and the antenna network is connected to the antenna; the first coaxial switch is connected to the first controller, and the second coaxial switch is connected to the second controller. Through the above technical solution, in the event of failure of the main transmitter and the first backup transmitter, the second backup transmitter can be enabled to shorten the off-air time and ensure the stability of 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 It is a structural schematic diagram of a medium wave transmission system provided in the first embodiment of the utility model;

[0015] Figure 2 It is a structural schematic diagram of a medium wave transmitting system provided in Embodiment 2 of the present utility model. DETAILED DESCRIPTION

[0016] 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.

[0017] It should be noted that the terms "first", "second", etc. 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, system, 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, systems, products or devices.

[0018] Embodiment 1

[0019] Figure 1 1 is a schematic diagram of the structure of a medium wave transmission system provided by the first embodiment of the utility model. This embodiment is applicable to the situation where a main and a backup transmitter fail in a medium wave broadcasting system. Figure 1 As shown, the system includes:

[0020] A main transmitter 101, a first backup transmitter 102, a second backup transmitter 103, a first coaxial switch 104, a first controller 105, a second coaxial switch 106, a second controller 107, a first load 108, a second load 109, an antenna network 110 and an antenna 111; wherein the main transmitter 101 is connected to the first coaxial switch 104, the first backup transmitter 102 and the first load 108 are connected to the first coaxial switch 104; the second backup transmitter 103 and the second load 109 are connected to the second coaxial switch 106; the first coaxial switch 104 and the second coaxial switch 106 are connected; the second coaxial switch 106 is connected to the antenna network 110, and the antenna network 110 is connected to the antenna 111; the first coaxial switch 104 is connected to the first controller 105, and the second coaxial switch 106 is connected to the second controller 107.

[0021] In this embodiment, the main transmitter is used to modulate the audio or video signal into a radio wave for antenna transmission. The backup transmitter exists as a backup for the main transmitter, and generally maintains the same configuration and performance parameters as the main transmitter. The backup transmitter includes a first backup transmitter and a second backup transmitter. The load can be used to convert the radio frequency energy generated by the transmitter into electromagnetic waves and radiate them. The load includes a first load and a second load. The coaxial switch is the hardware that actually performs the switching of the signal path. The coaxial switch has low insertion loss, low standing wave and good broadband performance, flexible connection and fast switching. The coaxial switch includes a first coaxial switch and a second coaxial switch. Among them, the first coaxial switch is used to realize the switching between the main transmitter and the first backup transmitter, and the second coaxial switch is used to realize the switching between the first coaxial switch and the second backup transmitter. The first controller is a device for outputting a first switching signal, and the second controller is a device for outputting a second switching signal. Among them, the first switching signal is used to instruct the first coaxial switch to switch the main transmitter to the first backup transmitter, and the second switching signal is used to instruct the second coaxial switch to switch the first coaxial switch to the second backup transmitter. The first controller and the second controller have remote control functions and also allow on-site electric switching.

[0022] The specific working process is as follows:

[0023] The reverse order of the transmitter is the main transmitter, the first backup transmitter and the second backup transmitter. Among them, the reverse order of the transmitter can be understood as the switching order of the transmitter. When the main transmitter operates normally, the signal is modulated through the main transmitter; when the main transmitter fails and the first backup transmitter is normal, the first controller outputs a first switching signal to control the first coaxial switch to switch the main transmitter to the first backup transmitter; when both the main transmitter and the first backup transmitter fail, the second controller outputs a second switching signal to control the second coaxial switch to switch the first coaxial switch to the second backup transmitter, so as to modulate the audio signal through the second backup transmitter. The first controller and the second controller can realize the output of the switching signal by manual setting, or they can realize the output of the switching signal under the control of the main controller.

[0024] Optionally, when backup switching to main is allowed and the transmitter in use is the second backup transmitter, if the second backup transmitter fails, the second backup transmitter is allowed to switch to the main transmitter.

[0025] Optionally, in order to adjust the medium wave transmission system more flexibly and implement various emergency measures more conveniently, the user is allowed to manually control the power on and off of each transmitter, switch antennas, and switch antenna feed networks.

[0026] Optionally, the main transmitter, the first backup transmitter, the second backup transmitter, the first coaxial switch, the first controller, the second coaxial switch, the second controller, the first load, the second load, the antenna feed network and the antenna may be connected via a feeder pipe.

[0027] The medium wave transmission system provided by the embodiment of the utility model includes a main transmitter, a first backup transmitter, a second backup transmitter, a first coaxial switch, a first controller, a second coaxial switch, a second controller, a first load, a second load, an antenna network and an antenna; wherein the main transmitter is connected to the first coaxial switch, the first backup transmitter and the first load are connected to the first coaxial switch; the second backup transmitter and the second load are connected to the second coaxial switch; the first coaxial switch is connected to the second coaxial switch; the second coaxial switch is connected to the antenna network, and the antenna network is connected to the antenna; the first coaxial switch is connected to the first controller, and the second coaxial switch is connected to the second controller. Through the above technical solution, in the event of failure of the main transmitter and the first backup transmitter, the second backup transmitter can be enabled to shorten the off-air time and ensure the stability of safe broadcasting.

[0028] In some embodiments, the first backup transmitter and the second backup transmitter have the same configuration.

[0029] Specifically, the first backup transmitter and the second backup transmitter have the same configuration, which means that the two backup transmitters can remain completely consistent in key technical parameters and performance indicators, such as but not limited to hardware configuration, power output and frequency range, etc., to ensure that they can replace each other when needed and switch seamlessly, thereby ensuring the continuity and stability of the broadcast without any impact on the user's receiving experience.

[0030] Embodiment 2

[0031] Figure 2 : is a schematic diagram of the structure of a medium wave transmission system provided by the second embodiment of the utility model. This embodiment is optimized and expanded on the basis of the above optional embodiments. The medium wave transmission system also includes a master controller, a switch, a first data collector, a second data collector and a third data collector. Figure 2 As shown, the system includes:

[0032] A main transmitter 201, a first backup transmitter 202, a second backup transmitter 203, a first coaxial switch 204, a first controller 205, a second coaxial switch 206, a second controller 207, a first load 208, a second load 209, an antenna feed network 210, an antenna 211, a main controller 212, a switch 213, a first data collector 214, a second data collector 215 and a third data collector 216.

[0033] Among them, the main transmitter 201 is connected to the first coaxial switch 204, the first backup transmitter 202 and the first load 208 are connected to the first coaxial switch 204; the second backup transmitter 203 and the second load 209 are connected to the second coaxial switch 206; the first coaxial switch 204 is connected to the second coaxial switch 206; the second coaxial switch 206 is connected to the antenna feed network 210, and the antenna feed network 210 is connected to the antenna 211; the first coaxial switch 204 is connected to the first controller 205, and the second coaxial switch 206 is connected to the second controller 207; the first data collector 214 is connected to the main transmitter 201 and the first controller 205; the second data collector 215 is connected to the first backup transmitter 202 and the second controller 207; the third data collector 216 is connected to the second backup transmitter 203; the switch 213 is connected to the first data collector 214, the second data collector 215 and the third data collector 216; the main controller 212 is connected to the switch 213.

[0034] In this embodiment, the master controller is used to monitor the status of the transmitter in real time, and after detecting a transmitter failure, controls the switching of the transmitter to ensure the stability and continuity of the broadcast signal transmission. The switch, as a network connection device, is responsible for transmitting data between the master controller and the data collector. The data collector is used to collect the performance parameters of the transmitter, such as signal strength and output power, and output these data to the master controller for real-time monitoring and fault diagnosis of the transmitter. The data collector includes a first data collector, a second data collector and a third data collector.

[0035] The specific working process is as follows:

[0036] The data collector collects the performance parameters of the transmitter and outputs the performance parameters to the switch. After receiving the performance parameters, the switch outputs the received performance parameters to the main controller. The main controller receives the performance parameters and determines whether the transmitter is faulty based on the performance parameters. When it is determined that the transmitter is faulty, the switch outputs the transmitter switching control signal to the switch. The switch outputs the received transmitter switching control signal to the corresponding data collector, which then outputs it to the corresponding controller so that the controller controls the corresponding coaxial switch to switch the transmitter.

[0037] Exemplarily, when the transmitter is currently in the power-on time period and the switchover is allowed, the switchover order is the main transmitter, the first backup transmitter, and the second backup transmitter. If the transmitter currently in use is the main transmitter, the first data collector will collect the performance parameters of the main transmitter and output the performance parameters to the switch; after the switch receives the performance parameters, it outputs the received performance parameters to the main controller; the main controller receives the performance parameters and determines whether the transmitter is faulty based on the performance parameters. If it is determined that the main transmitter is faulty, it outputs a switching control signal to the switch; the switch outputs the received switching control signal to the first data collector; and then the first data collector outputs it to the first controller, so that the first controller controls the coaxial switch to switch the main transmitter to the first backup transmitter. Similarly, if the transmitter currently in use is the first backup transmitter, if the first backup transmitter fails, it can be switched to the second backup transmitter in the above manner.

[0038] Optionally, if the transmitter currently in use is the second backup transmitter, and under the condition that backup switching to main is allowed, when the second backup transmitter fails, it can automatically switch to the main transmitter.

[0039] Optionally, when automatic reversing is allowed, if automatic reversing fails twice in a row, the automatic reversing process will not be started. In this case, manual clearing of the reversing fault is allowed, or the main controller automatically clears the reversing fault when it determines that the performance parameters of the transmitter are normal.

[0040] The medium wave transmission system provided by the embodiment of the utility model effectively reduces the off-broadcast time and further improves the stability of safe broadcasting.

[0041] In some embodiments, the master controller includes at least one network port, and the network port is used to receive the performance parameters of the transmitter output by the switch and output a control signal to the switch.

[0042] Specifically, at least one network port is provided on the master controller, so that one master controller can control multiple medium wave transmission systems through network connection, thereby reducing system deployment and operation and maintenance costs. The function of the network port is to receive data from the switch, which includes the performance parameters of the transmitter, such as the output power of the transmitter. At the same time, the master controller outputs a switching control signal to the switch through the network port to realize remote monitoring and control of the transmitter. This effectively improves the flexibility and scalability of the system and optimizes resource allocation.

[0043] In some embodiments, the first data collector is used to collect the main output power of the main transmitter, and output the main output power to the main controller through the switch; the second data collector is used to collect the first output power of the first backup transmitter, and output the first output power to the main controller; the third data collector is used to collect the second output power of the second backup transmitter, and output the second output power to the controller.

[0044] Specifically, the output power of the transmitter reflects the transmission capability of the transmitter and is an important performance parameter for determining whether the transmitter is faulty. In the medium wave transmission system, the main output power of the main transmitter is monitored by the first data collector, and the main output power is output to the main controller through the switch; the first output power of the first standby transmitter is collected by the second data collector, and the first output power is output to the main controller; the second output power of the second standby transmitter is collected by the third data collector, and the second output power is output to the controller. It provides comprehensive monitoring capabilities, laying the foundation for further ensuring the reliability and stability of the medium wave transmission system.

[0045] In some embodiments, the master controller is used to receive the main output power, the first output power and the second output power, wherein the output power is used to determine whether the transmitter fails, thereby ensuring the reliability and stability of the medium wave transmission system.

[0046] Specifically, the main controller may receive the main output power, the first output power, and the second output power, and determine whether the transmitter fails according to the received output power. The main controller may determine whether the transmitter fails by, after receiving the output power of the transmitter, determining whether the output power is less than a preset power threshold, and if so, determining that the transmitter fails.

[0047] Exemplarily, if the transmitter currently in use is the main transmitter, after receiving the main output power, the main controller determines whether the main output power is less than or equal to a preset power threshold, and if so, determines that the main transmitter fails.

[0048] It should be noted that this embodiment does not limit the manner in which the master controller determines a transmitter failure.

[0049] In some embodiments, the master controller is also used to output a main transmitter switching signal to the first data collector through the switch when the main transmitter fails; the first data collector is used to receive the main transmitter switching signal and output the main transmitter switching signal to the first controller; the first controller is used to receive the main transmitter switching signal and control the first coaxial switch to switch to the first backup transmitter; the master controller is also used to output a backup transmitter switching signal to the second data collector through the switch when the main transmitter and the first backup transmitter fail; the second data collector is used to receive the backup transmitter switching signal and output the backup transmitter switching signal to the second controller; the second controller is used to receive the backup transmitter switching signal and control the second coaxial switch to switch to the second backup transmitter. This ensures that in the event of one or more transmitters failing, the continuous transmission of signals and the uninterrupted broadcasting service can be guaranteed, the response speed and system stability are improved, the system recovery time is reduced, and the flexibility and reliability of the entire transmission system are enhanced.

[0050] In this embodiment, the main transmitter switching signal is used to instruct the first coaxial switch to switch the main transmitter to the first backup transmitter. The backup transmitter switching signal is used to instruct the second coaxial switch to switch the first backup transmitter to the second backup transmitter.

[0051] Specifically, in the medium wave transmission system, the main controller is not only responsible for continuously monitoring the performance parameters of the transmitter, but also, when a transmitter failure is detected, the main controller will quickly trigger the emergency plan. For example, when the main transmitter is determined to be faulty, the main transmitter switching signal is sent to the first data collector through the switch; the first data collector that receives the main transmitter switching signal immediately transmits the signal to the first controller; after receiving the signal, the first controller controls the first coaxial switch to switch the broadcast signal path from the faulty main transmitter to the first backup transmitter that is operating normally, ensuring the continuity and stability of signal transmission. If both the main transmitter and the first backup transmitter fail, the main controller sends a backup transmitter switching signal to the second data collector through the switch; after receiving the signal, the second data collector transmits it to the second controller; the second controller controls the second coaxial switch to switch the first backup transmitter to the second backup transmitter, thereby realizing further backup and switching of the transmitter.

[0052] In some embodiments, the master controller is further configured to output an on signal or an off signal to the main transmitter, the first backup transmitter, or the second backup transmitter, wherein the output of the on signal or the off signal is determined based on a preset on / off schedule, thereby effectively realizing automatic on / off of the transmitter and reducing reliance on manual monitoring.

[0053] In this embodiment, the preset power-on and power-off schedule may be a preset schedule for determining the power-on and power-off time of the transmitter. Optionally, the preset power-on and power-off schedule may be used cyclically with a weekly cycle.

[0054] Specifically, a preset power-on and power-off schedule is pre-set in the master controller. In order to ensure that the transmitter works according to the preset power-on and power-off schedule, the master controller needs to check the preset power-on and power-off schedule every minute. If the power-on time period is entered, a start signal is output to the currently used transmitter. If the power-off time period is entered, the currently used transmitter is turned off. The currently used transmitter can be understood as the transmitter through which the broadcast signal is modulated.

[0055] Exemplarily, the transmitter currently in use is the main transmitter. The main controller checks the preset power-on and power-off schedule and determines that it has entered the power-on time period, and then outputs a start signal to the main transmitter; if it is determined that it has entered the power-off time period, the main transmitter is turned off.

[0056] In some embodiments, the first data collector, the second data collector and the third data collector have the same configuration.

[0057] Specifically, in order to ensure the accuracy and consistency of data collection, the first data collector, the second data collector, and the third data collector use the same configuration to ensure that they can provide data with the same accuracy and format when monitoring transmitter performance parameters, such as signal strength and output power. This unified configuration helps to simplify the data analysis process, avoid errors introduced by equipment differences, and also facilitates maintenance and calibration. In addition, if the equipment needs to be replaced or upgraded, data collectors with the same configuration can be seamlessly replaced to ensure the continuous operation of the system and the reliability of the data.

[0058] In some embodiments, the first data collector, the second data collector, and the third data collector each include an advanced reduced instruction set machine central processing unit.

[0059] Specifically, the Advanced RISC Machine Central Processing Unit (ARM-CPU) refers to a central processing unit based on the ARM architecture. The first data collector, the second data collector, and the third data collector are all equipped with an Advanced RISC Machine Central Processing Unit (ARM-CPU), which ensures that the data collector can operate with high efficiency and low energy consumption when performing tasks such as data collection, processing, and preliminary analysis, while maintaining the compactness and high performance of the device.

[0060] Optionally, the medium wave transmission system also includes a computer, through which the computer, the main controller and each data collector are interconnected to form data. The following functions can be realized:

[0061] On-site automatic data detection: collect analog and switch quantities of each device and send them to the main controller;

[0062] The antenna feeder switching is controlled by the main controller;

[0063] Automatic data recording and printing: The data collector can record all analog quantities no more than once every 1 minute, and can record the time, machine number, and fault type of each transmitter off-air, and save it for one year. It supports report printing and output of electronic files.

[0064] Screen display function: Display the transmission equipment structure diagram, transmission equipment broadcast status, equipment fault graphic display and the numerical value of each equipment sampling point on the computer display screen.

[0065] Support parameter modification: Allow users to modify the transmitter power on / off schedule, the computer's internal electronic clock, the normal range of analog quantities collected on site, the normal state and fault state of the switch quantity through the computer.

[0066] Multiple transmitters can be managed in a network through a computer; the closed-circuit RF signal of the transmitter can be demodulated; the open-circuit signal of the transmitter can be monitored and the signal strength can be collected.

[0067] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A medium wave transmission system, characterized in that: It includes a main transmitter, a first backup transmitter, a second backup transmitter, a first coaxial switch, a first controller, a second coaxial switch, a second controller, a first load, a second load, an antenna feed network and an antenna; wherein, The main transmitter is connected to the first coaxial switch, and the first backup transmitter and the first load are connected to the first coaxial switch; The second standby transmitter and the second load are connected to the second coaxial switch; The first coaxial switch is connected to the second coaxial switch; The second coaxial switch is connected to the antenna feed network, and the antenna feed network is connected to the antenna; The first coaxial switch is connected to the first controller, and the second coaxial switch is connected to the second controller.

2. The system according to claim 1, characterized in that It also includes a master controller, a switch, a first data collector, a second data collector and a third data collector; wherein, The first data collector is connected to the main transmitter and the first controller; The second data collector is connected to the first standby transmitter and the second controller; The third data collector is connected to the second standby transmitter; The switch is connected to the first data collector, the second data collector and the third data collector; The master controller is connected to the switch.

3. The system according to claim 2, characterized in that The master controller includes at least one network port, and the network port is used to receive the performance parameters of the transmitter output by the switch and output a control signal to the switch.

4. The system according to claim 2, characterized in that The first data collector is used to collect the main output power of the main transmitter, and output the main output power to the main controller through the switch; The second data collector is used to collect the first output power of the first standby transmitter and output the first output power to the main controller; The third data collector is used for collecting the second output power of the second standby transmitter and outputting the second output power to the controller.

5. The system according to claim 4, characterized in that The master controller is used to receive the main output power, the first output power and the second output power, wherein the output power is used to determine whether a transmitter fails.

6. The system according to claim 5, characterized in that The master controller is further used to output a main transmitter switching signal to the first data collector through the switch when the main transmitter fails; the first data collector is used to receive the main transmitter switching signal and output the main transmitter switching signal to the first controller; the first controller is used to receive the main transmitter switching signal and control the first coaxial switch to switch to the first standby transmitter; The main controller is also used to output a backup transmitter switching signal to the second data collector through the switch when the main transmitter and the first backup transmitter fail; the second data collector is used to receive the backup transmitter switching signal and output the backup transmitter switching signal to the second controller; the second controller is used to receive the backup transmitter switching signal and control the second coaxial switch to switch to the second backup transmitter.

7. The system according to claim 5, characterized in that The master controller is further configured to output an on signal or an off signal to the main transmitter, the first backup transmitter or the second backup transmitter, wherein the output of the on signal or the off signal is determined based on a preset on / off schedule.

8. The system according to claim 2, characterized in that The first data collector, the second data collector and the third data collector have the same configuration.

9. The system according to claim 2, characterized in that The first data collector, the second data collector and the third data collector each include an advanced reduced instruction set machine central processing unit.

10. The system according to claim 1, characterized in that The first backup transmitter and the second backup transmitter have the same configuration.

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