Double-feed switching system with detection and alarm function

Abstract

The present invention discloses a dual-feed switching system with a detection alarm function, including: a power divider, used to equally divide an input signal into two signal outputs; a radio frequency switching switch 1, used to switch the first radio frequency signal; a radio frequency switching switch 2, used to switch the second radio frequency signal; a through-type power detector 1, used to detect the power of the first output radio frequency signal; a through-type power detector 2, used to detect the power of the second output radio frequency signal; a main control module, used to read the power detection value and control the switching of the switching switch. The dual-feed switching system with a detection alarm function using this structure can quickly determine the working status of the two antennas, realize seamless switching of the dual-feed system, transmit the signal uninterruptedly and with high quality, and provide a strong guarantee for the safe broadcasting of radio and television.

Description

Technical Field

[0001] The invention relates to the field of antenna feed line double-feed switching, and in particular to a double-feed switching system with a detection alarm function. Background Art

[0002] Broadcasting and television antenna feed line systems generally use two transmission methods: single feed and dual feed, among which the dual feed system is more widely used. The dual feed system has high overall power, is safe and reliable, and when one antenna has a problem, the system can switch to the other antenna for signal transmission. Most of the dual feed systems currently used require manual testing and fault diagnosis before switching when the antenna condition deteriorates, and it is impossible to make a quick judgment and complete the antenna switching in a short time. In order to ensure the safe broadcasting of radio and television signals, the present invention provides a dual feed switching system with a detection alarm function, which can quickly detect and judge antenna faults and realize the switching function, and more effectively ensure the normal operation of the system. Summary of the invention

[0003] In order to solve the problem of increased off-air time during the switching process of the antenna and feed line system, the present invention provides a dual-feed switching system with a detection alarm function, which can quickly determine the working status of the two antennas, realize seamless switching of the dual-feed system, and transmit the signal uninterruptedly and with high quality, thereby providing a strong guarantee for the safe broadcasting of radio and television.

[0004] The present invention provides a dual-fed switching system with a detection alarm function, comprising: a power divider, used for equally dividing an input signal into two signal outputs; a radio frequency switching switch 1, used for switching a first radio frequency signal; a radio frequency switching switch 2, used for switching a second radio frequency signal; a through-type power detector 1, used for detecting the power of the first output radio frequency signal; a through-type power detector 2, used for detecting the power of the second output radio frequency signal; and a main control module, used for reading a power detection value and controlling the switching of the switching switch.

[0005] Based on the above technical scheme, the present invention can quickly and effectively judge the working status of two antennas, and when one of the antennas has a problem, quickly switch to the other antenna for transmission, thereby reducing the downtime. The main control module judges the performance of the antenna connected to the corresponding feeder by reading the data of the through-type power detector, and then performs corresponding switching. The two feeders can be output to the antenna separately for transmission, or they can be output to the antenna at the same time. Through the setting of the schedule of the main control module and the setting of the power threshold value of different time periods, the incident power value of the through-type power meter is compared with the reading. When the incident power value is lower than the threshold value set by the main control, an alarm message is issued. The main control module can also be connected to the main control unit of the transmission system to perform corresponding linkage control measures. When a transmitter in the transmission system fails or the power drops, an alarm message is immediately issued. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a structural diagram of the double-fed switching system with detection alarm function of the present invention.

[0007] Figure 2 It is a schematic diagram of switch switching when the dual feed tubes of the present invention output to the antenna at the same time.

[0008] Figure 3 It is a schematic diagram of switch switching when the feed tube 1 of the present invention outputs to the antenna alone.

[0009] Figure 4 It is a schematic diagram of switch switching when the feed tube 2 of the present invention outputs to the antenna alone. DETAILED DESCRIPTION

[0010] Figure 1 The present invention is a structural diagram of a dual-fed switching system with a detection alarm function, the system comprising: a power divider, used to equally divide an input signal into two output signals; a radio frequency switching switch 1, used to switch a first radio frequency signal; a radio frequency switching switch 2, used to switch a second radio frequency signal; a through-type power detector 1, used to detect the power of the first output radio frequency signal; a through-type power detector 2, used to detect the power of the second output radio frequency signal; a main control module, used to read the power detection value and control the switching of the switching switch.

[0011] The transmitter outputs the RF signal to an input port of the RF switching switch 1; the two output signals of the power divider are respectively connected to the two input ports of the RF switching switch 1 and the RF switching switch 2; the two output ports of the RF switching switch 1 are respectively connected to the through-type power detector 1 and the RF switching switch 2; the two output ports of the RF switching switch 2 are respectively connected to the power divider and the through-type power detector 2; the through-type power detector 1 is connected to the feeder 1, and the RF signal is output to the antenna for transmission through the feeder 1; the through-type power detector 2 is connected to the feeder 2, and the RF signal is output to the antenna for transmission through the feeder 2; the main control module is respectively connected to the two through-type power detectors and realizes two-way communication, and the main control module outputs two control signals to the two RF switching switches respectively.

[0012] The main control module determines the performance of the antenna connected to the corresponding feeder by reading the transmission power, standing wave ratio and other parameters detected by the pass-through power detector, and then switches accordingly. The main control module sets the schedule and power threshold values ​​for different time periods, and compares the incident power value read from the pass-through power meter. When the incident power value read is lower than the threshold value set by the main control, an alarm message is issued. The main control module can also be connected to the main control unit of the transmission system to take corresponding linkage control measures. When a transmitter in the transmission system fails or the power drops, an alarm message is issued immediately.

[0013] Figure 2 It is a schematic diagram of switch switching when the dual feed tubes of the present invention are simultaneously output to the antenna. When the dual feed tubes are simultaneously output to the antenna, the radio frequency signal of the transmitter is input to the radio frequency switching switch 1, and the radio frequency signal is output to the radio frequency switching switch 2 after the switch switching, and then output from the radio frequency switching switch 2 to the power divider; the power divider divides the input radio frequency signal into two signals, which are output to the two radio frequency switching switches respectively; the first signal is output to the through-type power detector 1 through the radio frequency switching switch 1, and then output to the antenna through the feed tube 1 for signal transmission; the second signal is output to the through-type power detector 2 through the radio frequency switching switch 2, and then output to the antenna through the feed tube 2 for signal transmission.

[0014] Figure 3 It is a schematic diagram of switch switching when the feed tube 1 of the present invention outputs to the antenna alone. When the system is in a state where the feed tube 1 outputs to the antenna alone, the RF signal of the transmitter is input to the RF switching switch 1, and is directly output to the through-type power detector 1 after switch switching, and then output to the antenna through the feed tube 1 for signal transmission; after switch switching, one output end of the power divider is connected to the RF switching switch 1 and then to the RF switching switch 2, and then to the input end of the power divider; the other output end of the power divider is connected to the RF switching switch 2, and then to the through-type power detector 2.

[0015] By switching the switch, the radio frequency signal input by the transmitter is directly output to the through-type power detector 1, and then output to the antenna through the feeder 1 for signal transmission.

[0016] Figure 4 It is a schematic diagram of switch switching when the feed tube 2 of the present invention outputs to the antenna alone. When the system is in a state where the feed tube 2 outputs to the antenna alone, the RF signal of the transmitter is input to the RF switching switch 1, output to the RF switching switch 2 after switch switching, and then output to the through-type power detector 2 after switching, and finally output to the antenna through the feed tube 2 for signal transmission; one output end of the power divider is connected to the RF switching switch 2, and is connected to the input end of the power divider after switch switching; the other output end of the power divider is connected to the RF switching switch 1, and then connected to the through-type power detector 1.

[0017] By switching the switch, the RF signal input by the transmitter is directly output to the through-type power detector 2 after passing through the RF switch 1 and the RF switch 2, and is output to the antenna through the feeder 2 for signal transmission.

[0018] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments and various changes can be made thereto within the knowledge scope of ordinary technicians in the field.

Claims

1. A double-fed switching system with detection and alarm function, characterized in that: include: The power divider is used to equally divide one input signal into two output signals; RF switch 1, used for switching the first RF signal; RF switch 2, used for switching the second RF signal; A through-type power detector 1, used for detecting the power of the first output radio frequency signal; A through-type power detector 2, used for detecting the power of the second output radio frequency signal; The main control module is used to read the power detection value and control the switching of the switch; The transmitter outputs the RF signal to an input port of the RF switch 1; the two output signals of the power divider are respectively connected to the two input ports of the RF switch 1 and the RF switch 2; the two output ports of the RF switch 1 are respectively connected to the through-type power detector 1 and the RF switch 2; the two output ports of the RF switch 2 are respectively connected to the power divider and the through-type power detector 2; the through-type power detector 1 is connected to the feed tube 1, and the RF signal is output to the antenna for transmission through the feed tube 1; the through-type power detector 2 is connected to the feed tube 2, and the RF signal is output to the antenna for transmission through the feed tube 2; the main control module is respectively connected to the two through-type power detectors and realizes two-way communication, and the main control module outputs two control signals to the two RF switches respectively; The main control module determines the performance of the antenna connected to the corresponding feeder by reading the transmission power and standing wave ratio detected by the pass-through power detector, and then performs corresponding switching. The main control module compares the incident power value read from the pass-through power detector through the schedule setting and the power threshold value setting of different time periods. When the incident power value read is lower than the threshold value set by the main control module, an alarm message is issued. The main control module is also connected to the main control unit of the transmission system to perform corresponding linkage control measures. When a transmitter in the transmission system fails or the power drops, an alarm message is immediately issued. When the dual feed tubes are output to the antenna at the same time, the RF signal of the transmitter is input to the RF switch 1, and after the switch switching, the RF signal is output to the RF switch 2, and then output from the RF switch 2 to the power divider; the power divider divides the input RF signal into two signals, which are output to the two RF switches respectively; The first signal is output to the through-type power detector 1 through the RF switch 1, and then output to the antenna through the feeder 1 for signal transmission; The second signal is output to the through-type power detector 2 through the RF switch 2, and then output to the antenna through the feeder 2 for signal transmission; When the system is in a state where the feed tube 1 outputs to the antenna alone, the RF signal of the transmitter is input to the RF switching switch 1, and is directly output to the through-type power detector 1 after the switch is switched, and then output to the antenna through the feed tube 1 for signal transmission; after the switch is switched, one output end of the power divider is connected to the RF switching switch 1, then to the RF switching switch 2, and then to the input end of the power divider; the other output end of the power divider is connected to the RF switching switch 2, and then to the through-type power detector 2; When the system is in a state where the feed tube 2 outputs to the antenna alone, the RF signal of the transmitter is input to the RF switching switch 1, output to the RF switching switch 2 after switch switching, and then output to the through-type power detector 2 after switching, and finally output to the antenna through the feed tube 2 for signal transmission; one output end of the power divider is connected to the RF switching switch 2, and after switch switching, it is connected to the input end of the power divider; the other output end of the power divider is connected to the RF switching switch 1, and then connected to the through-type power detector 1.

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