Rail transit Internet-of-Things node control system

Abstract

The invention discloses a rail transit Internet-of-Things node control system. The system comprises a signal sampling module and a comparison detection module, the signal sampling module samples output signals of the rail transit Internet-of-Things node; an output port of the signal sampling module is connected with an input port of the comparison detection module; and signals are abnormal due tonode faults of the Internet of Things. At the moment, the operational amplifier AR3 outputs a high-level signal; meanwhile, an operational amplifier AR3 and capacitors C7-C9 are used for reducing thenoise of the signal, the signal accuracy is ensured, finally, peak signals in the signals are screened by using a peak detection circuit consisting of an operational amplifier AR5, a diode D7 and a diode D8,and the peak signal is used for triggering the signal emitter E1 to work; in order to further improve the precision of the trigger signal, the silicon controlled rectifier D9 is used for detecting the potentials of the inverting input ends of the operational amplifier AR2 and the operational amplifier AR3, the trigger signal of the signal emitter E1 is finely adjusted, and the rail transitInternet-of-Things node control system terminal receives the Internet-of-Things node information in time and responds in time.

Description

technical field [0001] The invention relates to the technical field of the Internet of Things, in particular to a rail transit Internet of Things node control system. Background technique [0002] In recent years, with the rapid development of urban modernization, urban rail transit is gradually entering the era of networked operation. While greatly improving transportation capacity and travel convenience, it also brings new problems and challenges to operation scheduling. Under the conditions of networked operation and "seamless transfer", passengers' travel routes are more diverse. With the rapid development of urban modernization, rail transit is gradually entering the network era. In the rail transit system, the rail transit IoT node control system is the cornerstone of its safe and efficient operation. [0003] At present, among numerous information communication transmission technologies, Zigbee technology based on IEEE802. Low cost, compact and simple protocol suit...

AI Technical Summary

Problems solved by technology

[0003] At present, among numerous information communication transmission technologies, Zigbee technology based on IEEE802. Low cost, compact and simple protocol suite, and convenient management of sensor nodes are widely used in the industrial field. However, the signal transmission of rail transit IoT nodes will be affected by the noisy environment of rail transit, especially rail transit IoT Information interaction between nodes, once a node fails, resulting in information errors, will lead to major deviations in the results of the analysis of the entire control system, and troubleshooting a node failure will seriously delay the system startup time, and the rail traffic is noisy The sampling information of the nodes in the environment will lead to misjudgment by the system, which will bring unpredictable losses to the rail transit IoT node control system

Images