Zigbee-based rail car anti-collision off-network proximity alarm system and method

Abstract

The invention discloses a Zigbee-based rail car anti-collision off-network proximity alarm system and method. The system comprises a main assembly and at least one auxiliary assembly, wherein each ofthe main assembly and the auxiliary assembly comprises a controller, an inductor and an alarm, the inductor comprises a Zigbee ad hoc network module, the transmission of a wireless signal is completedbetween the main assembly and the auxiliary assembly through the Zigbee ad hoc network module, and the auxiliary assembly only receives the wireless signal sent by the main assembly; the controller sends a control command to the inductor, and the inductor sends an omnidirectional wireless signal to the outside through the Zigbee ad hoc network module, monitors whether the wireless signal is received or not and controls the alarm to work or not. Within the effective working radius range, the system does not depend on transmission networks in any form, can sense each other, judge the distance between a target and the system itself by means of real-time detection of a receiver and a transmitter, and compare the distance with a set threshold value, therefore, judges whether to give an alarm or not, and plays a role in anti-collision early warning.

Description

technical field [0001] The invention belongs to the field of alarm monitoring, and in particular relates to a Zigbee-based anti-collision off-grid approach alarm system and method for rail cars. Background technique [0002] In recent years, with the development of cities and the increasing demand for subway travel, subway construction has developed rapidly, and its construction safety issues have gradually received attention, and requirements have been put forward for tunnel construction safety issues; Insufficient communication signals, lighting, narrow vehicle driving environment, and cross-operation of various construction units, driving safety and personal safety of operators are not guaranteed. [0003] The anti-collision approach alarm in the existing track area uses RFID ultra-high frequency wireless identification communication technology. Mobile reading electronic tags, the information is transmitted to the server by the network, and the position information of th...

AI Technical Summary

Problems solved by technology

[0004] Utilizing RFID ultra-high frequency wireless identification communication technology to realize proximity alarm requires equal distances throughout the tunnel, and generally deploys electronic tags every 25 meters. However, subway projects generally have a length of 20-30 kilometers, which is costly and expensive, and construction deployment and Maintenance requires a lot of manpower and material resources

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