Active temporary speed-limit tag and signal processing method thereof

Abstract

The invention discloses an active temporary speed-limit tag and a signal processing method thereof, which is used for solving the technical problem of the traveling safety of a train and the low energy consumption of the active temporary speed-limit tag. The active temporary speed-limit tag comprises a microprogrammed control unit (MCU), a radio frequency transceiver, a clock module, a matching network, a microstrip antenna, a sensor awakening circuit, a sound sensor, a vibration sensor, an energy detection module, a high-energy charging battery, a battery charging circuit and a battery protective circuit. The signal processing method comprises the following five state circulating processing courses: a deactivating state, a sleeping state, a data reading state, a data transmitting state and a receiving waiting state. Moreover, the invention also provides a sleeping activating algorithm (WS) for the active temporary speed limit and a scheme for installing the active temporary speed-limit tag on a railway. Compared with the existing temporary speed limit technique of the train, the invention has the advantage that the potential safety hazards of the train such as reading mistake or reading leakage and the like caused by anthropogenic factors are solved by utilizing an automatic identification technique.

Description

technical field [0001] The present invention relates to the technical field of train temporary speed limit on railways, and more specifically relates to a radio frequency identification (RFID) electronic tag and its Low-power signal processing implementation. Background technique [0002] Radio frequency identification (RFID) technology is a technology for automatic identification through the microwave band. It has the advantages of long transmission distance and fast transmission speed. It is an ideal choice for high-speed RFID positioning and identification applications. [0003] At present, when an emergency occurs along the railway line or temporary construction requires a temporary speed limit, two methods are generally used to limit the speed: one is that the railway dispatching department sends the speed limit instruction to the traffic department, and the speed limit information is passed through the RFID identification card. Write into the train operation monitorin...

AI Technical Summary

Problems solved by technology

When a locomotive equipped with a locomotive reader passes the temporary speed limit label on the locomotive track, the locomotive reader will feed back the speed limit content of the label to the locomotive driver, thus solving the problems of manual missed recognition and false recognition through automatic recognition technology

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