Radio frequency power amplifier module in train intelligent monitoring network node

Abstract

The invention discloses a radio frequency power amplifier module in a train intelligent monitoring network node. The radio frequency power amplifier module in the train intelligent monitoring network node comprises a main chip, a power supply circuit, a radio frequency input circuit, a radio frequency output circuit, a driving control circuit and a pre-amplification circuit, wherein the main chip is respectively connected with the power supply circuit, the radio frequency input circuit, the radio frequency output circuit, the driving control circuit and the pre-amplification circuit. On the research background of the train wireless sensor network technology, in order to guarantee normal communication after a train enters the environment with weakened signals such as a tunnel or a mountainous area, the radio frequency power amplifier module guarantees large enough output power through amplification and guarantees normal transmitting and receiving of communication data. The radio frequency power amplifier module in the train intelligent monitoring network node guarantees that in the environment with weakened signals, a monitoring network carries out real-time and continuous monitoring on the operation state of vehicle-mounted equipment, and reduces safety risks when the train runs. The radio frequency power amplifier module in the train intelligent monitoring network node can restrain same-frequency signals of an output end, prolongs the communication distance, improves the reliability of data transmission, and well guarantees correct transmission of monitoring data.

Description

technical field [0001] The invention relates to a radio frequency power module circuit, in particular to a radio frequency power amplifier module in a train intelligent monitoring network node. Background technique [0002] At present, the known data transmission of the train monitoring node adopts two methods: wired transmission of the on-board equipment itself and wireless transmission between the train and the monitoring center. In wireless transmission, the point-to-point radio frequency mode between the train and the monitoring center is usually used to send and receive data. This mode has a simple structure and is convenient. implementation; but when the train enters tunnels, mountain shelters and other environments, due to the attenuation of the signal, the existing monitoring nodes cannot guarantee sufficient output power to ensure data transmission. At the same time, because the design and structure of its communication mode are simple, the same-frequency interferen...

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Problems solved by technology

[0002] At present, the known data transmission of train monitoring nodes adopts two methods: wired transmission of the on-board equipment itself and wireless transmission between the train and the monitoring center. In wireless transmission, the point-to-point radio frequency mode between the train and the monitoring center is usually used to send and receive data. This mode has a simple structure and is convenient. implementation; b

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