Input switcher of radio and television satellite earth station modulator

Abstract

The utility model relates to the field of communication equipment, and discloses a radio and television satellite earth station modulator input switcher, which comprises a switcher body, a display screen fixedly connected to the outer surface of the front end of the switcher body, operation keys arranged on the outer surface of the right side of the display screen, and an LED indicating lamp fixedly connected to the inner surface of the front end of the switcher body. A buzzer is arranged on the outer surface of the right side of the LED indicating lamp. The radio and television satellite earth station modulator input switcher adopts a modularized structure, is simple in structure, low in manufacturing cost and high in switching speed, and can give out buzzer sound alarm in real time when input code stream and output level are lower than preset thresholds and communication among modules in equipment is abnormal. The radio and television satellite earth station modulator input switcher has the advantages of being simple in structure, supporting a universal international standard MODBUS TCP protocol and the like, and the radio and television satellite earth station modulator input switcher adopts a single-chip microcomputer, a network card and a gateway control module and is high in reliability.

Description

Technical Field

[0001] The utility model relates to the field of communication equipment, in particular to a modulator input switcher for a broadcasting and television satellite earth station. Background Art

[0002] The modulator is an important uplink broadcasting device of a radio and television satellite earth station. Its function is to modulate the input code stream signal to the set intermediate frequency. The front panel of the device is equipped with operation buttons, LCD display and LED working status indicator. It supports multiple input signal selections and can set the carrier output to be launched or closed.

[0003] Broadcasting and television satellite earth stations are generally equipped with a computer network management system (hereinafter referred to as "network management") to manage the modulator, display its important working status parameters, and switch the input signal of the modulator on the network management. This makes the switching operation of the modulator dense flow and clear flow overly dependent on the network management, and cannot be switched quickly. Due to the strict requirements of broadcast safety, a physical switcher that can conveniently, intuitively and quickly switch the dense flow and clear flow signals of the modulator is very needed. At present, no physical product with the function of switching the modulator input signal has been found, whether abroad or at home. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a broadcast television satellite earth station modulator input switcher, which has the advantages of good practicability and convenient operation to solve the above problems.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a radio and television satellite earth station modulator input switcher, including a switcher body, a display screen is fixedly connected to the front end outer surface of the switcher body, an operation button is arranged on the right outer surface of the display screen, an LED indicator light is fixedly connected to the front end inner surface of the switcher body, and a buzzer is arranged on the right outer surface of the LED indicator light.

[0008] Preferably, the switch body also includes a single-chip microcomputer, a W5500 network communication module embedded in the single-chip microcomputer, a MODBUS TCP gateway module, and a DC power supply with an output of 24V and 5V.

[0009] Preferably, the network communication module and the gateway module are not connected inside the chassis, and their network ports are respectively connected to the network switch via network cables for internal and external communications.

[0010] Preferably, a rectangular heat dissipation frame is fixedly connected to the right outer surface of the switch body, a rectangular installation frame is fixedly connected to the left inner surface of the rectangular heat dissipation frame, and a rectangular dustproof net is fixedly connected to the inner wall of the rectangular installation frame.

[0011] Preferably, the LED indicator light is used to indicate the online status of the signal input terminal and the transmitting status of the modulator, and the display screen is used to display the input code stream data and the modulator output level, completely getting rid of the dependence on the network management.

[0012] Preferably, the model of the single chip microcomputer is STC89C52, the model of the display screen is 1602LED, and the model of the DC power supply outputting 24V and 5V is GYVRMEVEPSRPDZN.

[0013] Preferably, a rectangular mounting groove matched with the rectangular heat dissipation frame is provided on the right outer surface of the switch body, and the switch body is movably connected with the rectangular heat dissipation frame through the rectangular mounting groove.

[0014] Preferably, there are two rectangular heat dissipation frames, which are distributed on the left and right sides of the switch body.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides a radio and television satellite earth station modulator input switcher, which has the following beneficial effects:

[0017] The modulator input switcher of a broadcasting and television satellite earth station adopts a modular structure, has a simple structure, a low cost, and a high switching speed. When the input code stream and the output level are lower than the preset threshold and the communication between the modules in the device is abnormal, a buzzer sound alarm can be issued in real time, and the universal international standard MODBUS TCP protocol is supported. The modulator input switcher of the broadcasting and television satellite earth station adopts a single-chip microcomputer, a network card and a gateway control module, has high reliability, supports the universal international standard MODBUS TCP protocol, and is convenient for monitoring and management on the network management system.

[0018] The modulator input switcher of the broadcasting and television satellite earth station is specially designed with a dustproof net at the heat dissipation port. This ingenious device can effectively prevent external dust from entering the interior of the device, thereby keeping the interior of the device clean and running stably. This design is particularly important in harsh external environments, such as areas with strong winds and sand. It not only extends the service life of the equipment, but also improves the reliability of the equipment, providing a strong guarantee for the stable transmission of radio and television signals. This attention to detail and technological innovation fully reflects the designer's ultimate pursuit of equipment performance and deep understanding of user needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1This is a structural schematic diagram of a radio and television satellite earth station modulator input switcher of the utility model;

[0020] Figure 2 The utility model is an electrical schematic diagram of a modulator input switcher of a broadcasting and television satellite earth station.

[0021] In the figure: 1. Switch body; 2. Buzzer; 3. Display screen; 4. Operation buttons; 5. LED indicator light. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Embodiment 1

[0024] See also Figure 1-2 , a radio and television satellite earth station modulator input switcher, including a switcher body 1, a display screen 3 is fixedly connected to the front outer surface of the switcher body 1, an operation button 4 is arranged on the right outer surface of the display screen 3, an LED indicator 5 is fixedly connected to the front inner surface of the switcher body 1, a buzzer 2 is arranged on the right outer surface of the LED indicator 5, the switcher body 1 also includes a single-chip microcomputer, a W5500 network communication module embedded in the single-chip microcomputer, a MODBUSTCP gateway module, and a DC power supply outputting 24V and 5V. The network communication module and the gateway module are not connected inside the chassis, and the network ports thereof are respectively connected to the network switch through network cables for internal and external communication;

[0025] The modulator input switcher of the broadcasting and television satellite earth station can be installed separately from the modulator of the broadcasting and television satellite earth station. The modulator is installed in the small signal equipment room, and the controller is installed in the duty monitoring room, which is convenient for remote monitoring and control. The modulator input switcher of the broadcasting and television satellite earth station can connect and control two modulators as needed to save costs. The switcher chassis is equipped with a single-chip microcomputer and a W5500 network module embedded in the single-chip microcomputer. Through C language programming and downloading the control and network communication program to the single-chip microcomputer for data acquisition, control and MODBUS TCP network communication, the three devices communicate with the network management or other devices through the network switch. Each modulator has multiple signal input ports, corresponding to different usage scenarios. Pressing the input switching button of the switch can realize quick switching of the signal input port of the selected modulator, completely getting rid of the dependence on the network management, and using LED on the switch panel to indicate the online status of the signal input terminal. The switch panel is equipped with a switching enable switch, a switching enable indicator light, and a communication status indicator light between the network module and the gateway module. The switching enable switch can lock the switching button on the panel to prevent misoperation. The communication status indicator light between the network module and the gateway module indicates the communication status between the two. Only when the communication status is normal can all functions of the controller be realized.

[0026] A rectangular heat dissipation frame is fixedly connected to the right outer surface of the switch body 1, a rectangular installation frame is fixedly connected to the left inner surface of the rectangular heat dissipation frame, a rectangular dustproof net is fixedly connected to the inner wall of the rectangular installation frame, and a rectangular installation groove adapted to the rectangular heat dissipation frame is provided on the right outer surface of the switch body 1. The switch body 1 is movably connected to the rectangular heat dissipation frame through the rectangular installation groove. There are two rectangular heat dissipation frames, which are distributed on the left and right sides of the switch body 1. The use of the rectangular dustproof net can effectively prevent dust from entering the interior of the switch body 1, thereby keeping the interior of the device clean and running stably. In harsh external environments, such as areas with strong winds and sand, this design is particularly important. It not only extends the service life of the equipment, but also improves the reliability of the equipment.

[0027] LED indicator 5 is used to indicate the online status of the signal input terminal and the transmitting status of the modulator. Display screen 3 is used to display the input code stream data and the output level of the modulator, completely getting rid of the dependence on network management. The model of the single-chip microcomputer is STC89C52, the model of display screen 3 is 1602LED, and the model of the DC power supply that outputs 24V and 5V is GYVRMEVEPSRPDZN.

[0028] Embodiment 2

[0029] See also Figure 1-2, a radio and television satellite earth station modulator input switcher, when the modulator input effective bit rate is lower than the lower limit of 5000Kbps, the corresponding code rate LED indicator 5 goes out, and the buzzer 2 sounds once. The alarm is automatically turned off after about 12 seconds. The alarm can only be sounded again after the code stream returns to normal and falls below the lower limit again. When the modulator is in the transmitting state, the transmitting LED indicator 5 is turned off. When the transmission is turned off, the LED indicator 5 goes out and the buzzer 2 sounds once; when the output level is higher than -30dBm, the level indication LED light is preset, and when it is lower than -30dBm, the LED indicator 5 goes out and the buzzer 2 alarms once. A display screen 3 is provided on the switcher panel. By circulating the page turning button, multi-page display can be performed, which can display the input effective code rate of the modulator and the output level value of the modulator, and display the IP address of the gateway module, the network communication module and the modulator. The brightness of the display screen 3 can be adjusted by the brightness adjustment knob. The brightness increases clockwise and decreases counterclockwise.

[0030] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A broadcast television satellite earth station modulator input switcher, comprising a switcher body (1), characterized in that: A display screen (3) is fixedly connected to the front outer surface of the switch body (1), and an operation button (4) is arranged on the right outer surface of the display screen (3). An LED indicator light (5) is fixedly connected to the front inner surface of the switch body (1), and a buzzer (2) is arranged on the right outer surface of the LED indicator light (5).

2. A broadcast television satellite earth station modulator input switcher according to claim 1, characterized in that: The switch body (1) also includes a single-chip microcomputer, a W5500 network communication module embedded in the single-chip microcomputer, a MODBUSTCP gateway module, and a direct current power supply with an output of 24V and 5V.

3. A broadcast television satellite earth station modulator input switcher according to claim 2, characterized in that: The network communication module and the gateway module are not connected inside the chassis, and their network ports are respectively connected to the network switch through network cables for internal and external communications.

4. A broadcast television satellite earth station modulator input switcher according to claim 2, characterized in that: A rectangular heat dissipation frame is fixedly connected to the right outer surface of the switch body (1), a rectangular installation frame is fixedly connected to the left inner surface of the rectangular heat dissipation frame, and a rectangular dustproof net is fixedly connected to the inner wall of the rectangular installation frame.

5. A broadcast television satellite earth station modulator input switcher according to claim 1, characterized in that: The LED indicator light (5) is used to indicate the online status of the signal input terminal and the transmission status of the modulator, and the display screen (3) is used to display the input code stream data and the output level of the modulator, completely getting rid of the dependence on the network management.

6. A broadcast television satellite earth station modulator input switcher according to claim 2, characterized in that: The model of the single chip microcomputer is STC89C52, the model of the display screen (3) is 1602LED, and the model of the DC power supply outputting 24V and 5V is GYVRMEVEPSRPDZN.

7. A broadcast television satellite earth station modulator input switcher according to claim 1, characterized in that: A rectangular mounting groove adapted to the rectangular heat dissipation frame is provided on the right outer surface of the switch body (1); the switch body (1) is movably connected to the rectangular heat dissipation frame via the rectangular mounting groove.

8. A broadcast television satellite earth station modulator input switcher according to claim 4, characterized in that: There are two rectangular heat dissipation frames, which are distributed on the left and right sides of the switch body (1).

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