Graded automatic broadcast control device for broadcast signals

Abstract

The invention discloses a graded automatic broadcast control device for broadcast signals. The device comprises a circuit breaker QF, a program receiving and forwarding power supply contactor, a self-service program power supply contactor, an emergency broadcast power supply contactor, a first relay, a second relay and a third relay. The circuit breaker QF is provided with a switch QF-1 and a switch QF-2 which are in the same working state. The switch QF-1 is provided with a first movable end and a first fixed end; the switch QF-2 is provided with a second movable end and a second fixed end; the receiving and transferring power supply contactor is provided with a coil KM1-1, a normally open contact KM1-2, a normally open contact KM1-3 and a normally closed contact KM1-4; the self-service program power supply contactor is provided with a coil KM2-1, a normally open contact KM2-2, a normally open contact KM2-3, a normally open contact KM2-4 and a normally closed contact KM2-5. The emergency broadcast power supply contactor is provided with a coil KM3-1, a normally open contact KM3-2, a normally closed contact KM3-3 and a normally closed contact KM3-4.

Description

technical field [0001] The invention relates to a control device for hierarchical automatic broadcasting of broadcast signals. Background technique [0002] Broadcasting refers to the information dissemination tool that transmits sound through radio waves or wires. Radio was born in the 1920s. The advantage of broadcasting is that it has a wide range of objects, rapid transmission, diverse functions, and strong appeal; and because the broadcasting system is a multi-point arrangement, the wires of the broadcasting are mostly arranged in remote areas, which are easily struck by lightning and the equipment is easily damaged; in the past, broadcasting was mostly based on information content, The importance is controlled by manual switching. When an emergency occurs, it is difficult to transmit information, and it often takes a lot of time to start broadcasting, which affects the timeliness of information transmission. In case of emergency broadcasts such as geological disasters...

AI Technical Summary

Problems solved by technology

The advantage of broadcasting is that it has a wide range of objects, rapid transmission, diverse functions, and strong appeal; and because the broadcasting system is a multi-point arrangement, the wires of the broadcasting are mostly arranged in remote areas, which are easily struck by lightning and the equipment is easily damaged; in the past, broadcasting was mostly based on information content, The importance is controlled by manual switching. When an emergency occurs, it is difficult to transmit information, and it often takes a lot of time to start broadcasting, which affects the timeliness of information transmission. In case of emergency broadcasts such as geological disasters, there may be manual Unforeseen losses due to untimely switching or delayed switching

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