Complex environment personnel missing prevention system

Abstract

The invention discloses a complex environment personnel missing prevention system. The complex environment personnel missing prevention system comprises a hand-held device, a gateway, a central server, an RFID card belt, an RFID card belt self-service extraction device, a positioning node module and anc. The RFID card belt is a wristband device worn on a wrist and is internally provided with an RFID label, a pressure sensing module and an acousto-optic alarm module. The RFID card belt self-service extraction device comprises a certificate identification module, an issuing and recovery module, a button display module and a main control module. The positioning node module comprises an RFID reader-writer module and a ZigBee wireless communication module. The positioning node module comprises a voice module, a GSM module, an alarm lamp module and a communication module and is placed at an entrance of a safe area. By adopting the system, positioning obstacles and difficulties under a complex environment are effectively avoided, the usage is convenient and rapid, a large number of manual and material resources are saved, and the missing rate of children and old people under the complex environment is lowered.

Description

technical field [0001] The invention belongs to the field of wireless communication and positioning, in particular to a system for preventing personnel from being lost in complex environments. Background technique [0002] It is not uncommon for people to get lost in complex environments such as train stations, bus stations, and airports, especially for vulnerable groups such as the elderly and children. Although there are many positioning and tracking products on the market, such as child locators, positioning watches and anti-lost phones, most of them use GPS positioning technology, which is difficult to adapt to complex and changeable environments. Patent application 201210020918.3 proposes "a self-charging positioning and tracking mobile terminal and method" and patent application 201520088714.7 proposes "a child-prevention bracelet". Under special environments such as house cover, mountain cover and dense buildings, the accuracy and reliability of GPS positioning will ...

AI Technical Summary

Problems solved by technology

Although there are many positioning and tracking products on the market, such as child locators, positioning watches, and anti-lost phones, most of them use GPS positioning technology, which is difficult to adapt to complex and changeable environments.

Patent application 201210020918.3 proposes "a self-charging positioning and tracking mobile terminal and method" and patent application 201520088714.7 proposes "a child-prevention bracelet". In special environments such as house cover, mountain cover and dense buildings, the accuracy and reliability of GPS positioning will be affected, and even positioning difficulties will occur

In addition, most products and devices wear too many radiation sources directly on the human body, which brings huge radiation and seriously affects human health

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