Device for monitoring railway foreign body intrusion by using dynamic signal

Abstract

The invention discloses a device for monitoring railway foreign body intrusion by using a dynamic signal, and belongs to the field of disaster prevention and reduction of the foreign body intrusion in rail environment monitoring. In the method for monitoring railway foreign body intrusion, an alternating current signal is adopted, the voltage and power of an input signal and an output signal are monitored, and the signals are ensured not to lead in other signals to cause abnormal work of a power grid due to seton. The multi frequency point working mode of an audio signal ensures that a plurality of paths of power grid cable signals on the same power grid support frame work at different frequencies. If any key device in a drive loop goes wrong, a falling-object relay falls. Due to the adoption of a transformer isolation signal, DC isolation is realized between the interior and the exterior of a board, and the reliability and the safety of the circuit are improved. The AC dynamic mode foreign body sensor has higher safety and reliability than the DC mode foreign body sensor, and accords with guide safety principle of the field of railway signals.

Description

technical field [0001] The invention belongs to the field of disaster prevention and mitigation of foreign matter invasion limit for railway environment monitoring, and in particular relates to a device for monitoring foreign matter invasion limit of railways using dynamic signals. Background technique [0002] With the development of high-speed railway technology, railway disaster prevention, as a major engineering project, has become a major engineering and technical problem for every newly built high-speed railway, which affects the driving safety of high-speed trains, specifically manifested in weather factors, geological factors and man-made These factors can cause major traffic safety accidents. Especially the invasion of foreign objects caused by geological factors and human factors, such as falling rocks on steep slopes and falling foreign objects on bridges, will directly cause train derailment or even greater safety driving accidents. Therefore, the foreign matter...

AI Technical Summary

Problems solved by technology

When the foreign object grid of the DC signal is disconnected, if the grid line is connected to other DC signals, it will cause a false connection of the foreign object grid. This state is extremely dangerous. At the same time, the DC signal is not a dynamic signal and does not conform to the dynamic drive of the railway signal. and monitoring principles, affecting the safety of foreign matter grid on-off monitoring

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